JP2009078666A - Gate locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure enabling smooth locking operation and capable of grasping the state certainly being locked, and to stably keep a closed state of a side gate. <P>SOLUTION: The gate lock device comprises a gate locking body 2 rotatably equipped along an outer surface of the side gate 13 and locking to a fixing slit 15a provided on a fixed column 15, and a handle stopper 3 provided with a recessed portion 32 fitted with the gate locking body 2 and capable of regulating rotations of the gate locking body 2. To the gate locking body 2 in a closed posture locked to the fixing slit 15a, the recessed portion 32 of the handle stopper 3 is self-fitted. Thereby, the gate locking body 2 is fixed in the closed posture to keep the side gate 13 in the closed state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gate lock device that supports a loading platform gate of a transport vehicle in a closed state.

  A loading platform of a transport vehicle such as a dump truck or a truck is provided with a gate that can be freely opened and closed, such as a rear gate and a side gate, on the outer periphery thereof for loading and unloading. As an apparatus for supporting such a gate in a closed state, for example, in Patent Document 1, the rear gate is locked in a closed state by engaging with a hook attached to a side portion of the rear gate and fixed to the vehicle body side. A gate lock device is described.

  This type of gate lock device includes a base fixed to the rear gate, a cover provided on the base, and an operating lever pivotally supported by the cover or the base. In addition, the operation lever is released from engagement with the hook when the operation lever is raised, and is provided with a lock member that engages with the hook when lying down, and a tip provided on the inner surface of the cover when the operation lever falls down. A stopper that abuts is provided.

As a gate lock device for the side gate, for example, a device as described in Patent Document 2 has been proposed. The gate lock device includes a lock member that is inserted into the opening hole of the support member while sliding the operation lever in a sliding manner, and is detachably engaged with the opening hole, and a handle portion that rotates the operation lever. ing. And it is designed to position the tip of the lock member on the back of the edge of the opening hole while shifting the sliding contact part of the lock member in the anti-insertion direction. It is configured to effectively suppress wear deformation.
Japanese Utility Model Publication No. 62-132873 Japanese Utility Model Publication No. 6-69078

  In the conventional gate lock device as in the above example, an internal mechanism other than an operation lever that is directly touched and operated by a work vehicle is covered with a cover or a support member. Therefore, even if the operation lever is operated and the gate is locked in the closed state, the state in which the lock member is engaged does not appear on the outer surface, and it is not possible to grasp whether or not it is engaged securely. The operation was sensuous.

  Further, the engaged lock member may be supplementarily pressed so as not to be disengaged so that the lock member may not be disengaged due to vibrations caused by running of the vehicle or some external force. Preferably, it was required to be a device that can suitably maintain the closed state.

  Therefore, the present invention has been made in view of the above-described problems, and enables a smooth locking operation and has a structure capable of grasping that the gate has been securely locked, so that the gate can be closed. It is an object of the present invention to provide a gate lock device that can be stably maintained and can improve safety and reliability during traveling.

In order to achieve the above-described object, the present invention provides a gate that is configured to constitute an outer peripheral portion of a cargo bed and that can be freely opened and closed with a lower end shaft as a rotation center so as to intersect the lower end shaft. A gate lock device for fixing to a fixed pillar at a corner of the cargo bed, which is rotatably provided along an outer surface of the gate, and locked to a fixing slit provided in the fixed pillar; The gate lock main body is provided with a recess that fits into the gate lock main body and can regulate the rotation of the gate lock main body. The gate lock main body is fixed in the closed position by fitting the recess, and the gate is maintained in the closed state. The gate lock main body may be rotated by using the lock main body as a guide, and if the gate lock main body is fitted in the recess of the handle stopper, the gate can be reliably closed.

  According to the present invention, in the gate lock device having the above-described structure, the gate lock main body includes a bent hook portion that can enter the fixing slit and have a distal end portion locked to the fixing column, and the hook portion is used for the fixing. A lever handle that moves forward and backward with respect to the slit is formed integrally, and is pivotally supported so as to be rotatable about the bent portion of the hook portion. The lever handle of the gate lock body is Whereas the handle stopper has a guide portion formed with a passage for running the protrusion, the recess has a cross-sectional shape of the lever handle. The gate lock body is pivoted by running in the passage while the lever handle protrusion is locked to the handle stopper guide. Wherein the work range is configured as specified.

  Thereby, the rotation operation range of the gate lock body is defined, and when the lever handle is turned up and down, the handle stopper can also follow and turn naturally, so that the operation of the lever handle can be facilitated. .

  Further, the handle stopper is formed so as to be pivotably coupled to a tip portion of a bracket fixed to a support member that pivotally supports the gate lock body and to bias the lever handle in a holding direction. The recess of the handle stopper may be elastically fitted to the lever handle when the gate is closed and the gate lock body is rotated so as to be engaged with the fixing slit.

  In the gate lock device of the present invention, it is preferable that the handle stopper is formed by a linear member, and the base portion is inserted through the attachment hole at the tip end portion of the bracket and is rotatably attached. Alternatively, the handle stopper may be formed of a linear member, the base portion may be bent in an annular shape, and may be rotatably attached to the attachment hole at the tip portion of the bracket using a bolt. Further, the handle stopper may be formed of a plate-like member, and may be rotatably coupled to the distal end portion of the bracket.

  In the present invention, the configuration of the gate lock body and the handle stopper makes it possible to perform a smooth locking operation with good operability. When releasing the gate lock, the handle stopper fitted to the lever handle is used. Since it can be easily done with just one hand, it is easy to work with. Further, when the handle stopper needs to be replaced, it is possible to easily remove the base portion of the handle stopper from the mounting hole of the bracket, and it is also possible to easily replace the handle stopper with a new handle stopper.

  According to the gate lock device of the present invention configured as described above, it is possible to perform a smooth locking operation and to have a structure capable of grasping that the gate is securely locked, so that the closed state of the gate can be stably maintained. It can be maintained to improve safety and reliability when traveling.

  The best mode for carrying out a gate lock device according to the present invention will be described below with reference to the drawings.

  FIGS. 1-5 has shown an example of the gate lock apparatus of this invention, FIG. 1 is a front view of the side gate which comprises the left-right outer peripheral part of the cargo box in the vehicle using the gate lock apparatus which concerns on this invention. is there. 2 is a front view showing the gate lock device in the closed position, FIG. 3 is a front view showing the gate lock device in the open position, FIG. 4 is a perspective view of the gate lock body, and FIG. 2) a plan view and (b) a side view. FIG. 6 is an explanatory view showing the operation procedure of the gate lock device from the cross-sectional direction, FIG. 7 is (a) a plan view and (b) a side view showing another form of the handle stopper, and FIG. It is explanatory drawing which shows other forms of a stopper.

  For convenience, the directionality in the gate lock device 1 and the vehicle 10 will be described with the vertical direction in the figure as the vertical direction as shown in FIG. 1 and the horizontal direction in the figure as the front-back direction.

  The cargo box 11 is mounted on a loading platform (not shown) of the vehicle 10 with a tilting device, and is supported to be tiltable. The packing box 11 includes a floor bottom 12 on which a load is loaded, and front and rear walls and side walls that stand so that the floor bottom 12 is surrounded from the front, rear, left, and right sides.

  In such a vehicle 10, for example, the side wall is disposed in the longitudinal direction of the vehicle 10, and is supported so as to be able to open and close in the outward direction of the cargo box 11 with the lower end shaft as a rotation center. It is set to 13. In addition, the rear wall is rotatably supported via a shaft at the lower end portion, and is a tailgate 14 that can be opened rearward.

  In addition, the packing box 11 can be tilted with respect to the packing box 11 by a tilting device, and a gate (tail gate 14 or side gate 13) positioned below the tilt is accompanied by the tilting operation. By opening, the load in the packing box 11 can be easily lowered to the ground. Further, loading of the load on the packing box 11 may be performed by appropriately opening the side gate 13 or the tail gate 14 according to the load.

  Fixed pillars 15 are respectively provided at the corners of the loading platform facing the front and rear end portions of the side gate 13 of the illustrated form, and the side gate 13 is fixed to the fixed pillars 15 by the gate lock device 1. It has become so. That is, as shown in FIG. 2, the fixed column 15 provided so as to intersect the lower end axis has a vertically long surface (side surface) facing the front and rear end portions (only the front end portion is shown in the figure) of the side gate 13. A substantially rectangular fixing slit 15a is formed.

  An opening 16a is also provided in the cover 16 (support) of the gate lock device 1 provided adjacent to the fixed column 15 at a position facing the fixing slit 15a. The distal end portion (hook portion 21) of the gate lock main body 2 of the gate lock device 1 is inserted into the fixing slit 15a through the opening hole 16a to fix the side gate 13 to the fixed column 15 or to rotate it. The side gate 13 can be maintained in a closed state.

  More specifically, the illustrated gate lock device 1 includes a gate lock body 2 and a handle stopper 3.

  The gate lock body 2 includes a hook portion 21 whose tip portion protrudes and retracts in the fixing slit 15a through the opening hole 16a, and a lever handle 22 that operates the hook portion 21 so as to be detachable from the fixing slit 15a. These are integrally formed in a bowl shape.

  As illustrated in FIG. 4, the hook portion 21 has a shape bent in a substantially “<” shape, and an axial center m is provided in the bent portion. The gate lock main body 2 is pivotally supported by the cover portion 16 of the side gate 13 so as to be rotatable about the bent portion (axial center m) of the hook portion 21. The tip end portion of the hook portion 21 has an upper outer surface (21a) formed in a taper shape so that the hook portion 21 can smoothly protrude and appear with respect to the opening hole 16a and the fixing slit 15a. A step portion 24 is provided at a connection portion between the hook portion 21 and the lever handle 22.

  In the vicinity of the step portion 24 of the gate lock body 2, a protrusion 23 is provided. The protrusion 23 is disposed near the outer edge of the gate lock body 2 and protrudes in a direction intersecting a plane (rotation surface) on which the gate lock body 2 rotates. Further, the protrusion 23 is formed with a protruding length substantially equal to the thickness dimension of the gate lock body 2.

  The handle stopper 3 is coupled to such a gate lock body 2 so as to be rotatable with respect to a tip end portion of a bracket 4 fixed to a support that pivotally supports the gate lock body 2. It is comprised so that rotation can be controlled.

  As shown in FIG. 5, for example, the handle stopper 3 is formed using a single elastic wire such as a stainless steel bar. As shown in FIG. 5A, the guide portion 31 is formed by being bent into a substantially U shape in plan view, and the bent ends of the base portion 33 are formed close to each other. The inside of the guide portion 31 formed by bending into a U-shape is a passage 31a for running the protrusion 23 of the lever handle 22 of the gate lock body 2, and is approximately the same or slightly larger than the diameter of the protrusion 23. It is formed with a width. Accordingly, the handle stopper 3 can be interlocked with the operation of the gate lock main body 2, and is configured to be able to define the rotation operation range of the gate lock main body 2 by the guide portion 31.

  Further, as shown in FIG. 5B, the base 33 of the handle stopper 3 is formed by bending back both ends aligned at an acute angle. The base portion 33 is inserted and fixed in the mounting hole 41 of the bracket 4. A recess 32 is formed in the middle of the handle stopper 3. The recessed portion 32 is provided with a fitting portion 32 a that is bent in accordance with the shape such as the thickness and width of the lever handle 22, and is configured to hold the lever handle 22.

  In the illustrated embodiment, in particular, the fitting portion 32a of the recess 32 is formed to be bent so as to form an acute angle, and the outer edge of the lever handle 22 can be fitted and held by its elastic force. . For example, it is preferable that the base portion 33 of the handle stopper 3 is bent back at an angle of about 35 °, and the fitting portion 32a of the recess 32 is bent at an angle of about 85 °.

  Further, the bracket 4 is formed of a flat plate steel material, and has a substantially L shape in plan view so that the tip end faces the outside of the cover portion 16. Further, the base portion of the bracket 4 is integrally fixed to the shaft center m. The gate lock body 2 is disposed between the bracket 4 and the outer surface of the side gate 13.

  An attachment hole 41 for attaching the handle stopper 3 is provided at the distal end portion of the bracket 4, and the base portion of the handle stopper 3 is inserted into the attachment hole 41 so as to be rotatable. The attachment hole 41 is disposed so as to be exposed to the outside of the cover portion 16.

  The bracket 4 may be disposed between the gate lock body 2 and the outer surface of the side gate 13.

  Since the handle stopper 3 is attached to the bracket 4, the base portion 33 of the handle stopper 3 is bent back at an acute angle, and the concave portion 32 has a fitting portion 32 a having an angle smaller than a right angle. The handle 22 is biased in a direction (upward direction in FIG. 6). Furthermore, the handle stopper 3 has a structure in which the base portion 33 is inserted through the mounting hole 41 of the bracket 4 and coupled thereto, and is rotatable at the tip portion of the bracket 4.

  Such a handle stopper 3 is not only formed by an elastic wire, but may also be formed in a form having the same configuration as described above using an inelastic wire. Further, as shown in FIG. 7, the handle stopper 3 includes a guide portion 31 that is bent in a U-shape to form a passage 31a, and a recess portion 32 in which the fitting portion 32a forms an acute angle, and the base portion 33 is bent in an annular shape. It may be formed and have a bolt hole 33a. Thereby, the handle stopper 3 is attached to the attachment hole 41 of the bracket 4 using the bolt, and can be coupled to the bracket 4 so as to be rotatable.

  In addition, the handle stopper 3 is not only formed by bending one wire as described above, but also by punching and forming the guide portion 31 by, for example, pressing a flat steel material, The cross-sectional shape may be bent in the same manner as described above, and the concave portion 32 may be provided. In this case, as shown in FIG. 8, the base portion 33 of the handle stopper 3 and the mounting hole 41 of the bracket 4 are coupled by inserting a pin 42 at the tip of the bent base portion 33 and are pivotally supported with respect to the bracket 4. Therefore, it is sufficient that the lever handle 22 is attached so as to be rotatable, and as a whole, the lever handle 22 can be provided with an urging force.

  The gate lock device 1 configured as described above closes the side gate 13 of the cargo box 11, pushes down the lever handle 22 of the gate lock body 2 and rotates it, and the gate lock body 2 is shown in FIG. 2. Closed position. As a result, the tip end portion of the hook portion 21 enters the fixing slit 15a and engages with the fixed column 15, so that the side gate 13 and the fixed column 15 are integrally fixed and locked.

  At this time, in the handle stopper 3, when the lever handle 22 is pushed down in the rotation direction, the handle stopper 3 also rotates following the trajectory of the protrusion 23 of the lever handle 22. That is, when the gate lock body 2 shown in FIGS. 3 and 6 (a) is opened, the lever handle 22 is pushed down and turned to bring the gate lock body 2 into the closed position shown in FIG. 6 (c). The lever handle 22 rotates while pushing and expanding the handle stopper 3 to which the urging force works to the outside and elastically deforming it. Further, as shown in FIG. 6B, the protrusion 23 of the lever handle 22 moves along the guide portion 31 (the passage 31a thereof) of the handle stopper 3. When the projection 23 reaches just before the recess 32 of the handle stopper 3, as shown in FIG. 6C, the recess 32 is elastically fitted to the base of the lever handle 22, and the gate lock body 2 is closed. Become posture. When the recess 32 is fitted to the lever handle 22 in this manner, the gate lock body 2 is prevented from further upward rotation, and thus is held in the closed posture.

  As a result, while the gate lock body 2 is in the closed position, the lever handle 22 is elastically held in the recess 32 of the handle stopper 3 and is maintained. Even if this occurs, the gate lock body 2 is prevented from rattling and the side gate 13 can be stably closed.

  In addition, when the concave portion 32 of the handle stopper 3 is fitted to the lever handle 22, that is, the hook portion 21 of the gate lock body 2 enters and locks into the fixing slit 15a. When the closing operation is performed, the handle stopper 3 may be fitted to the lever handle 22 as a guide. As a result, the side gate 13 can be reliably fixed in the closed state, and workability is improved.

  Further, when opening the gate lock body 2 in the closed posture, the lever handle 22 is removed by hand, the fitting of the recess 32 is released (see FIG. 6B), and the lever handle 22 is pushed upward in the rotational direction. . Then, by a reverse operation to the above, the protrusion 23 of the lever handle 22 moves along the passage 31a of the guide portion 31 of the handle stopper 3, and as shown in FIGS. 3 and 6A, When the protruding portion 23 reaches and stops at the end, the tip of the hook portion 21 retreats from the fixing slit 15a, and the fixing state between the fixing column 15 and the side gate 13 is released. Further, since the protrusion 23 is locked at the end of the guide portion 31, the gate lock body 2 does not rotate upward any more and is stably held. Thus, when opening the gate lock body 2 in the closed position, the handle stopper 3 can be removed from the lever handle 22 by simply pressing the guide portion 31 of the handle stopper 3 with one hand, and the locked state can be easily achieved. Since it can be released, it is excellent in workability.

  Furthermore, when it is necessary to replace the handle stopper 3, it is possible to easily replace the handle stopper 3 with a new handle stopper 3 by simply removing the base 33 of the handle stopper 3 from the bracket 4. For example, in the case of the handle stopper 3 illustrated in FIG. 7, the handle stopper 3 can be removed by removing the bolts fixed to the bracket 4 and updated to a new one. Since the mounting portion (mounting hole 41) between the handle stopper 3 and the bracket 4 is exposed to the outside of the cover portion 16 of the side gate 13, there is no need to remove the cover portion 16 and the maintenance, inspection, and replacement can be easily performed. Work can be done.

  As described above, by using such a gate lock device 1, the side gate 13 can be firmly fixed, and even if the internal mechanism cannot be visually observed, the gate lock main body can be reliably used without relying on a sensual place. The two hook portions 21 can be locked and fixed to the fixing column 15, so that the closing operation is not troublesome and the reliability can be improved.

  In the above-described embodiment, the case where the packing box 11 is tiltably supported by the tilting device has been described as an example. However, the scope of application of the gate lock device 1 of the present invention is not limited to this, and the tilting device is tilted. Needless to say, even the vehicle 10 without the device can be suitably used. Moreover, in the said embodiment, although the example which applied the gate lock apparatus 1 of this invention to the side gate 13 was demonstrated, this invention is not limited to this, If it is a gate which comprises the outer peripheral part of a loading platform, it will be a tailgate. It can be applied to the above.

  The present invention can be suitably used as a gate lock device that maintains a side gate of a transport vehicle or the like in a closed state.

It is a front view of the side gate which comprises the right-and-left outer peripheral part of the packing box in the vehicle using the gate lock device concerning the present invention. It is a front view which shows the gate lock apparatus of a closed attitude | position. It is a front view which shows the gate lock apparatus of an open attitude | position. It is a perspective view which shows an example of a gate lock main body. It is an example of a handle stopper, (a) is a plan view (b) is a side view. The operation procedure of the gate lock device concerning the present invention is shown from a section direction, (a) is an explanatory view of a BB section in Drawing 3 at the time of an open posture of a gate lock body, (b) is a handle stopper from a lever handle. FIG. 3C is an explanatory diagram of a cross section AA in FIG. 2 when the gate lock body is in a closed posture. The other form of a handle stopper is shown, (a) is a top view, (b) is a side view. It is explanatory drawing which showed other forms of the handle stopper, and was seen from the cross-sectional direction similar to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gate lock apparatus 10 Vehicle 11 Cargo box 12 Floor bottom 13 Side gate (side wall)
14 Tailgate (rear wall)
15 Fixing column 15a Fixing slit 16 Cover part 16a Opening hole 2 Gate lock body 21 Hook part 22 Lever handle 23 Protrusion part 3 Handle stopper 31 Guide part 31a Passage 32 Recess 4 Bracket 41 Mounting hole

Claims (6)

A gate that configures the outer periphery of the loading platform and is fixed to a fixed column at a corner of the loading platform that is provided so as to be able to open and close with the lower end axis as a pivot. A locking device,
A gate lock body that is rotatably provided along the outer surface of the gate and is engaged with a fixing slit provided on the fixed column, and a recess that is fitted to the gate lock body are provided to rotate the gate lock body. A handle stopper capable of restricting movement,
The gate lock main body is fixed in the closed position by fitting the recessed portion of the handle stopper to the gate lock main body in the closed position locked to the fixing slit, and the gate is maintained in the closed state. Gate lock device. The gate lock main body is integrally provided with a bent hook portion that can enter from the fixing slit and the tip end portion of which can be locked to the fixing column, and a lever handle that advances and retracts the hook portion with respect to the fixing slit. And is pivotally supported so as to be rotatable about the bent part of the hook part as a fulcrum,
Whereas the lever handle of the gate lock body is provided with a protruding portion that protrudes in a direction intersecting the rotation surface of the gate lock body,
The handle stopper has a guide portion in which a passage for running the protrusion is formed, and the concave portion is bent to correspond to the cross-sectional shape of the lever handle,
2. The structure according to claim 1, wherein the rotation operation range of the gate lock body is defined by running in the passage while the protrusion of the lever handle is locked to the guide portion of the handle stopper. The gate lock device described. The handle stopper is formed so as to be rotatively coupled to the tip of the bracket fixed to the support that pivotally supports the gate lock main body and urged in the direction of holding the lever handle.
3. The recess according to claim 2, wherein the recess of the handle stopper is elastically fitted to the lever handle when the gate is closed and the gate lock body is rotated so as to be engaged with the fixing slit. Gate lock device.   4. The gate lock according to claim 2, wherein the handle stopper is formed of a linear member, and a base portion is inserted into an attachment hole at a tip end portion of the bracket to be bent and fixed. apparatus.   4. The handle stopper according to claim 2 or 3, wherein the handle stopper is formed of a linear member, the base portion is bent in an annular shape, and is rotatably attached to the mounting hole at the tip end portion of the bracket using a bolt. The gate lock device described.   4. The gate lock device according to claim 2, wherein the handle stopper is formed of a plate-like member and is rotatably coupled to the tip end portion of the bracket.

Images