JP2008087556A - Locking device for wing door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device capable of stabilizing a locked state at a position away from a wing frame, on an edge of a wing door. <P>SOLUTION: A locked member 7 has a projecting piece 71 capable of permitting the turn in a predetermined range and advancible/retractable in the projecting direction at an edge of a wing door 13. A locking means 3 has a locking piece 52 turnable in a predetermined range while a turnable shaft of the locking piece is advancible/retractable toward the substantially vertical direction. When the locking piece is turned and erected, a space corresponding to the wall thickness of the locked member is formed between the locking piece in a vicinity of the turning shaft 47 and a surface of a cargo bed base part 15, and a part in a vicinity of a fore end of the locking piece is abutted to a vicinity of the edge of the wing door. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a locking device for a wing door, and more particularly to a locking device that can be locked and released without being manually operated.

  There are various types of box-type cargo bed structures mounted on trucks, such as a rear opening / closing type, a hood type, or a wing door type, but the wing door type cargo bed structure extends along the front-rear direction at the center of the roof. The roof frame was designed to open and close to the left and right. And the opening and closing part is the half of the roof part and one side part, and since the open state becomes a shape similar to the wing of a bird, it is called a wing type, and the opening and closing part is called a wing door is there.

  Therefore, the conventional wing door is provided with a power source (hydraulic pressure or the like) for opening and closing, and is opened and closed by operating a cylinder or the like. However, in the locking mechanism, a plurality of locking devices are manually operated after the wing door is closed. Therefore, when the operation of the locking device has not been completed or is insufficient, the wing door and the loading platform base are separated in the middle of transportation, and a gap is created between the two. . In addition, when a rollover accident occurs, it can be considered that the wing door easily opens and the luggage is scattered on the road.

Therefore, the present applicant has developed a locking device that can automatically lock the wing door (see Patent Document 1). In this technique, the locking piece constituting the locking means provided on the loading platform base is provided so as to be rotatable and movable up and down, and a rotatable locked member is attached to the edge of the wing door. It was. The locked member is urged so as to be inclined in an inward direction with respect to the surface of the wing door. When the leading end of the locked member reaches the load carrier base, the locked member is urged. The locking member was rotated against the bias, and the protruding direction of the locked member was close to the surface of the wing door, so that the inclination angle was small. By such rotation of the locked member, the protruding length from the edge of the wing door is substantially increased, and the tip of the locked member greatly enters the housing of the locking means. And it was set as the structure which promotes rotation of a locking piece.
JP 2005-60982 A

  In the above technique, the edge of the wing door moves in the closing direction, so that the front end of the locked member first reaches the load base, so that the wing door is further closed after the wing door reaches the load base. The distance between the edge and the load carrier base is shortened by the movement of the edge of the wing door, that is, the edge of the wing door approaches the load carrier base. It was the structure which moved and changed an angle. This is due to the fact that the member to be locked is scheduled to reach the base of the loading platform, not the locking piece.

  However, since a general wing door is supported by two inverted L-shaped wing frames provided at two places on the front and rear of the loading platform, this frame is arranged in the vicinity of the wing frame according to the tilt of the frame. However, in the place away from the wing frame, a bend occurs due to its own weight, and the positional relationship between the member to be locked and the locking means changes depending on the degree of the bend ( This is different from the vicinity of the frame), and it is sometimes difficult to ensure a stable locking state.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide a locking device capable of stabilizing a locking state at a position away from the wing frame among the edges of the wing door. Is to provide.

  Accordingly, the present invention provides a truck bed structure constituted by a bed base and a wing door, and a locked member protruding from an edge of the wing door and the locked member near the edge of the bed base. A locking device for a wing door comprising locking means provided in a possible manner, wherein the locked member is allowed to rotate within a predetermined range and is directed toward a protruding direction at an edge of the wing door. The locking member includes a protruding piece configured to be movable forward and backward, and the locking means has a locking piece that can rotate within a predetermined range, and the rotation axis of the locking piece is substantially vertical. When the locking piece pivots and stands up so as to be able to move forward and backward in the direction, it corresponds to the thickness of the locked member between the locking piece and the surface of the loading base in the vicinity of the rotation shaft. A gap is formed, and the vicinity of the tip of the locking piece is the above It is an gist locking device of the wing door, characterized in that the vicinity of the periphery of the viewing door is abutting against consisting locking means.

  According to the above configuration, even when the locked member does not reach the loading base, that is, when the locking member reaches the locking piece constituting the locking means, the locking piece moves downward. Since the protruding piece can be retracted, the leading end of the protruding piece can be moved to the gap between the locking piece and the base of the loading platform by the guide of the locking piece. When reaching the surface of the base, the protruding piece rotates and can enter the housing of the locking means.

  In the above invention, the protruding piece of the locked member is a protruding piece biased outward in the protruding direction from the edge of the wing door, and the locking piece of the locking means is biased upward. It can be set as the structure which was made into the latching piece.

  In the case of such a configuration, when both the projecting piece and the locking piece come into contact with each other, either of them can be retracted against the bias due to the relative positional relationship, and the projecting piece is locked. Even when an external force is applied that prevents the device from entering the inside of the housing, stoppage of the operation due to the external force can be avoided by the backward movement. When the external force disappears, it is moved forward again by the effect of the urging force. Therefore, particularly when the wing door is opened, the protruding piece and the locking piece can be restored to the original state.

  And in the said invention, the said to-be-latched member is a to-be-latched member comprised by the housing for a wing with which the front side wall surface of a wing door is mounted | worn, and the protrusion piece attached to this wing housing, An eccentric cam having a through hole is fixed to the base of the protruding piece, and a support shaft is inserted into the through hole of the eccentric cam, and the support shaft is movable along a long groove provided in the wing housing. And the spring holding shaft supported by the support shaft is loosely inserted into the regulating plate inside the wing housing while inserting the pressing plate, and the compression spring holds the spring between the pressing plate and the regulating plate. It can be set as the structure inserted by the axis | shaft.

  In such a configuration, the pressing plate comes into contact with the eccentric cam, and the pressing plate presses the eccentric cam by the compression spring. Therefore, the cam rotates until the pressing force against the eccentric cam becomes stable. Will be energized. Therefore, the cam biased by the rotation biases the rotation of the protruding piece to which the eccentric cam is fixed, and the protruding piece is biased with respect to the surface direction of the wing door by the biasing of the compression spring. It will be inclined at a predetermined angle. And this inclination becomes rotatable against the urging | biasing of the said compression spring, when the front-end | tip of the said protrusion piece reaches | attains a loading platform base. In addition, the compression spring simultaneously urges the support shaft through the pressing plate in the direction in which the protruding piece protrudes, and the support shaft can move along the long groove of the wing housing and the compression spring. It will be possible to move back against the bias of the spring.

  In addition, the present invention provides a roof frame laid horizontally in the center of the roof of the loading platform along the center line in the longitudinal direction of the truck, and a rear frame of the loading platform that supports the roof frame at the rear and constitutes a frame of the loading platform rear part. A substantially inverted L-shaped wing frame supported in the vicinity of the front and rear ends of the roof frame and contrasted on the left and right sides of the roof frame, and a roof forming portion and a side surface of the load platform that are supported by the wing frame to form a load roof portion A wing door that integrally forms a side surface forming portion that forms a wing, a cylinder device provided between the wing frame and the rear frame of the loading platform, and a part of the side surface portion from the left and right end portions of the loading platform bottom In a truck bed structure comprising a loading platform base, the locked member protruding from the edge of the wing door and the locked member are sandwiched near the edge of the loading platform base And a locking device for the wing door, the locking member being allowed to rotate in a predetermined range and extending in a direction protruding from an edge of the wing door. The locking member includes a protruding piece configured to be movable forward and backward, and the locking means has a locking piece that can rotate within a predetermined range, and the rotation axis of the locking piece is substantially vertical. When the locking piece pivots and stands up so as to be able to move forward and backward in the direction, it corresponds to the thickness of the locked member between the locking piece and the surface of the loading base in the vicinity of the rotation shaft. The gist of the present invention is also a locking device for a wing door, which constitutes a gap and is a locking means in which the vicinity of the front end of the locking piece is in contact with the vicinity of the edge of the wing door.

  According to the above configuration, since both the protruding piece and the locking piece can advance and retreat, the wing door is supported by the wing frame, and when the wing door at a position away from the wing frame is bent, the wing The locked member located in the vicinity of the frame may not reach the locking means, and the locked member where the deflection occurs may reach the locking means in advance, but in such a case, Even if the protruding piece is extremely close to the locking piece, it is possible to maintain an appropriate positional relationship by retracting either the protruding piece or the locking piece. The locking operation by is secured.

  Furthermore, the present invention provides a roof frame laid horizontally in the center of the roof of the loading platform along the center line in the front-rear direction of the truck, and a rear frame of the loading platform that supports the roof frame at the rear and constitutes a frame body at the rear of the loading platform. A substantially inverted L-shaped wing frame supported in the vicinity of the front and rear ends of the roof frame and contrasted on the left and right sides of the roof frame, and a roof forming portion and a side surface of the load platform that are supported by the wing frame to form a load roof portion A wing door that integrally forms a side surface forming portion that forms a wing, a cylinder device provided between the wing frame and the rear frame of the loading platform, and a part of the side surface portion from the left and right end portions of the loading platform bottom In the truck bed structure comprising a loading bed base, a plurality of locked members projecting from the edge of the wing door with an appropriate interval between the edges of the wing door, and the loading bed base A locking device for a wing door comprising a locking means provided so as to be able to clamp the locked member at a position facing the locked member in the vicinity of the edge of the door. The locking member includes a protruding piece that is allowed to rotate in a range and is configured to be able to advance and retreat in a direction protruding from the edge of the wing door. A pivotable locking piece, and a pivot shaft of the locking piece is provided so as to be able to advance and retract in a substantially vertical direction. A lock formed between the locking piece and the surface of the loading platform base is formed with a gap corresponding to the thickness of the locked member, and the vicinity of the end of the locking piece is in contact with the vicinity of the edge of the wing door. Each of the members to be locked reaches the locking means individually Are summarized as locking device of the wing door, characterized in that seals made by.

  According to the above configuration, in a part of the wing door that causes bending, there is no hindrance to the locking operation of the locking piece even when the locked member approaches the locking means, and the locking piece operates normally. As a result, the protruding piece enters the gap between the locking piece and the base of the loading platform, and the rotation of both the protruding piece and the locking piece is limited, and the wing door edge can be locked by the locking piece. It becomes.

  In the above invention, the protruding piece of the locked member is a protruding piece biased in a direction protruding from an edge of the wing door, and the locking piece of the locking means is biased upward. It can be set as the structure which is a locking piece.

  In the case of the above configuration, until the projecting piece and the locking piece approach and come into contact with each other, a constant posture can be maintained by urging, and the engaged member provided on a part of the wing door that has been bent is provided. Even when the stopping member abnormally approaches the locking means, one of them can move back against the bias after contact, thereby forming a state in which the locking piece can rotate. It is. When the wing door is opened, the protruding piece and the locking piece can be easily restored to the state before the locking.

  Moreover, in the said invention, the said protrusion piece and the said locking piece can be set as the structure which either or both reverse | retreats against the said urging | biasing by the relative positional relationship of both. With this configuration, not only the strength of the bias but also the relative positional relationship, for example, the positional relationship when the locked member abuts at an angle at which the locking piece cannot be retracted, depending on the state. By being able to retreat one of them, it is possible to realize a locked state with a stable locking piece.

  Furthermore, in the above invention, the locked member is a locked member composed of a wing housing attached to the front side wall surface of the wing door, and a protruding piece attached to the wing housing, An eccentric cam having a through hole is fixed to the base of the protruding piece, and a support shaft is inserted into the through hole of the eccentric cam, and the support shaft is movable along a long groove provided in the housing. And a spring holding shaft supported by the support shaft is loosely inserted into the restriction plate inside the housing while inserting the pressure plate, and a compression spring is inserted into the spring holding shaft between the pressure plate and the restriction plate. It can also be set as a structure.

  In the case of the above configuration, the member to be locked acts as a support shaft via the pressing plate while the compression spring acts on the eccentric cam to act on the protruding piece to which the eccentric cam is fixed. Can be urged in the forward direction (protruding direction). Therefore, before the locked member reaches the locking means, the protruding piece is always maintained in a constant state, and the locking piece is operated smoothly by moving backward or rotating against this bias. To do.

  In any one of the above-described inventions, the locking piece is pivotally supported by a shaft portion that is movable in a substantially vertical direction, and is a long lock that projects outward from the shaft portion. When the locking piece is provided with a main body portion and a locking action portion that continues to the locking main body portion and protrudes on the opposite side of the shaft portion, and the locking main body portion is raised. A locking piece configured to form a gap corresponding to the thickness of the locked member between the locking action portion and the loading platform base, and a tip of the locked member is the locking member When reaching the action part, the locked member lowers the locking action part to rotate the whole locking piece, and the tip of the locked member is connected to the locking action part. Entry into the gap with the base of the loading platform, the locked member is allowed to move only in the vertical direction, and the locking piece is tilted May be configured to turn in the direction is limited.

  When it is set as the said structure, when the axial part rotates, a latching main-body part will be in a standing state, and the latching piece can latch the to-be-latched member of a wing door by this standing state. At the same time, the leading end of the protruding piece enters the gap between the locking action part of the locking main body part and the loading platform base, and a considerable range of the locking action part extends to the tip part of the protruding piece. As long as the projecting piece does not slide upward, the projecting piece cannot be removed from the intrusion state of the gap, and as a result, the locking main body portion maintains the standing state. It is.

  Further, in each of the above inventions, the wing door is a wing door having a structure in which both ends in the front-rear direction are supported by a wing frame, and an intermediate portion is slightly bent downward, and the locked member is the wing door. When the edge of the wing door moves exclusively in the vertical direction according to the degree of bending just before closing the door, the tip of the locked member reaches the surface of the load carrier base and the locked member rotates. After starting movement, when reaching the locking piece and when the edge of the wing door moves exclusively in the left-right direction, the protruding piece of the locked member that has reached the locking piece is retracted, It can be set as the structure which is the to-be-latched member which can slide the front-end | tip of this protrusion piece on the surface of the said locking piece.

  In the case of the above configuration, the projecting piece first rotates, even when the wing door is bent and moved downward by the movement trajectory when the wing door is closed, first reaching the loading platform base. After the protruding direction becomes the same as the direction protruding from the wing door, the locked member further moves downward, so that the locking piece can be rotated and the locking piece It becomes possible to stand up and to lock the locked member. Further, even if the locked member descends to the locking means before reaching the base of the loading platform due to the movement trajectory of the wing door, the projecting piece that has reached the locking piece moves backward to maintain a predetermined positional relationship. By maintaining and sliding the tip of the protruding piece on the surface of the locking piece, the protruding piece can move to the vicinity of the surface of the loading base, and the locking piece can be raised.

  According to the present invention, since both the locked member and the locking piece are configured to be able to advance and retract, the edge of the wing door operates unexpectedly, and the locked member attached to the edge. Whether the first member reaches the loading platform base or the first locking piece, the engaged member moves backward or the locking piece retracts to engage the locking piece. The stop member can be allowed to enter. Thereby, the latching state in the position away from the wing frame among the edges of the wing door can be stabilized.

  Further, since the above-mentioned locked member and the locking piece that can be advanced and retracted are urged in the forward direction, in order to realize the locked state, the locked member and the locking piece may be retracted against the urging. When the stop is released, it is urged again to be restored to a predetermined position and state, and it becomes possible to repeatedly operate under the same conditions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present embodiment is an apparatus for locking a wing door in a truck bed part. First, the structure of a truck bed part will be generally described. As shown in FIG. A cargo bed front portion 11 constituted by a wall surface portion provided at the rear, a cargo bed rear portion 12 constituting a rear surface of the cargo bed, a wing door 13 constituting a roof portion and a side surface portion, a cargo bed bottom portion 14 constituting a bottom surface of the cargo bed, and A box-shaped loading platform is formed as a whole by the loading platform base 15 that is rotatably provided at both left and right ends of the loading platform bottom.

  Among the structural members of the loading platform as described above, the inning door 13 is configured by integrally configuring the loading platform side portion 13a and the roof portion 13b of the loading platform portion 1, and a roof frame 13c is formed at substantially the center of the roof portion 13b. It is horizontally mounted, divided into right and left with the roof frame 13c as a boundary, and is rotatably supported by a rotating shaft (not shown). In addition, since the wing door 1 becomes a form similar to a wing | wing (wing) like illustration, when opening by the said structure, it is called with the said name. Here, the entire wing door 13 is supported by inverted L-shaped wing frames 13d and 13e provided at both front and rear edges, and the wing frames 13d and 13e are frames of the loading platform front portion 11 and the loading platform rear portion 12, respectively. Cylinders 16 and 17 are interposed between the frames constituting the part. Therefore, by operating the cylinders 16 and 17, the wing frames 13d and 13e are rotated in the opening and closing direction around the rotation axis of the roof frame 13c, whereby the entire wing door 13 is also rotated in the opening and closing direction. It will be.

  The loading platform base 15 is provided at both left and right edges of the loading platform bottom 14 and constitutes a part of the side of the loading platform. The loading platform base 15 is configured to be rotatable with the loading platform bottom 14. It can also be. In order to lock the wing door 11 in a closed state, the wing door 11 is generally provided on the projecting member 2 projecting from the end edge 13f of the wing door 11 and the loading base 15 and is paired with the projecting member 2. Therefore, when the wing door 11 is closed, each protruding member 2 is configured to be locked by the locking member 3. Therefore, in order to lock the wing door configured as described above, in the present embodiment, the protrusion member 2 and the locking member 3 are configured as described above.

  As shown in FIG. 2, the locking member (generally referred to as locking means in the present invention) 3 of the present embodiment is constituted by a housing 4 and a locking portion main body 5. The housing 4 is composed of a base 41 for mounting on the loading platform base 15 and a peripheral portion 42 having a substantially U-shaped cross section, and the surface of the housing 4 is mounted by mounting the base 41 on the loading platform base 15. It is assimilated with the surface of the loading platform base 15 (referred to as both loading platform base), and the locking portion main body 5 is held inside the peripheral portion 42. The peripheral portion 42 includes two parallel holding portions 43 and 44. The holding portions 43 and 44 are provided with elongated holes 45 and 46 provided symmetrically. A pivot 47 that can be inserted through the holes 45 and 46 at the same time is provided. Further, the movement of the pivot 47 is limited only within the range of the long holes 45 and 46, and the long holes 45 and 46 function as guide grooves. And the guide direction by these long holes 45 and 46 is provided in the perpendicular direction. That is, the pivot 47 is configured to move linearly from the upper end to the lower end of the long holes 45 and 46. The elongated holes 45 and 46 may be configured so as to be gradually separated from the housing base 41 by being configured to be slightly inclined from the upper end toward the lower end. When the pivot 47 is lowered, the pivot 47 can be guided so as to gradually move away from the housing base 41.

  The locking portion main body 5 includes a rotating portion 51 that is rotatably held with respect to the housing 4, a flat plate-like locking piece 52 that is continuous with the rotating portion 51, and a continuous portion of the locking piece 52. And a base end portion 53. The rotating portion 51 is held by the pivot 47 inside the housing 4 and has a circular through hole. Accordingly, the locking portion main body 5 can be rotated around an axis having the pivot 47 as a rotation axis. Further, the locking piece 52 is arranged in a state of protruding outward from the housing 4, and at this time, the base end portion 53 continuous with the locking piece 52 is positioned in the vicinity of the base portion 41 of the housing 4. Will be.

  Further, an urging portion 6 is mounted between the housing 4 and the locking portion main body 5, and the locking portion main body 5 is placed in a predetermined direction with respect to the housing 4 fixed to the loading platform base 15. Energize. Specifically, the compression spring 61 urges the rotating portion 51 of the locking portion main body 5 upward via the pivot 47, and the spring regulating shaft 62 through which the compression spring 61 is inserted has the pivot 47. The pressure restricting portion 64 is configured to be fixed to the pivot insertion portion 63 that permits the insertion of the locking portion main body 5. When the locking portion main body 5 is mounted on the housing, the pivot restricting portion 67 is inserted into the pivot insertion portion 63, thereby The entirety of 64 is attached to the locking portion main body 5. The housing bottom 48 is provided with a through hole 49 so that the tip of a spring regulating shaft 62 that penetrates the compression spring 61 can be inserted into the through hole 49. Therefore, since the pivot 47 is inserted through the pivot insertion portion 63, the pressing restricting portion 64 is relatively rotatable with respect to the locking portion main body 5. Even when it rotates around the center, the state of the pressure restricting portion 64 does not fluctuate. The compression spring 61 exerts an urging force between the pivot insertion portion 63 and the housing bottom portion 68, and urges the rotating portion 51 of the locking portion main body 5 upward. On the other hand, when a downward force is applied to the locking portion main body 5, the pivot insertion portion 83 descends against the urging force of the compression spring 61 via the rotating portion 51 and the pivot 47, and the spring The distal end portion of the restriction shaft 62 protrudes outward from the through hole 49 of the housing bottom 48. When the downward force disappears, the urging force of the compression spring 61 can raise the pivot 51 through the pivot insertion part 63 and the pivot.

  Therefore, as shown in FIG. 3, the locking member 3 is in a state of being released by its own weight of the locking piece 42 when no external force acts on the base end portion 53 of the locking portion main body 5. This open state is stopped at a predetermined angle by a stopper continuous with the pivot 47 of the housing 4. Then, when an external force acts on the base end portion 53, that is, when a downward force acts on the base end portion 53, the entire locking member 3 is in an upright state. Thus, when the locking member 3 stands up, the below-described protruding member 3 can be locked.

  Next, the locked member 7 corresponding to the protruding member 3 will be described. As shown in FIGS. 4 and 5, in the locked member 7 of the present embodiment, a protruding piece 71 protruding outward is rotatably mounted on a wing housing 72 by a support shaft 73. Long holes 74 and 75 through which the support shaft 73 can be inserted are linearly provided in the wing housing 72 in the vertical direction (direction in which the wing housing protrudes on the surface of the wing door). , 75 can be moved along the elongated holes 74, 75.

  Here, the eccentric cam 8 having a through hole is fixed to the base portion 76 of the protruding piece 71, and the support shaft 73 is inserted into the through hole 81 of the eccentric cam 8 so that the mounting with the wing housing 72 is possible. Further, the support shaft 73 is also inserted through the base shaft portion 78 of the spring holding shaft 77, and the spring holding shaft 77 can be moved along with the support shaft 73. A compression spring 79 can be inserted into the spring holding shaft 77, and a pressing plate 9 is interposed between the compression spring 79 and the base shaft portion 78. The compression spring 79 is That is, a compressive force is applied to the pressing plate 9. The compression spring 79 is mounted between a restriction plate 70 provided on the inner side of the wing housing 72 and the pressing plate 9. When the compression force is applied to the compression spring 72, the restriction plate 79 is attached. The repulsive force is increased by 70 and the pressing plate 9.

  Further, as shown in FIG. 6, cam contact portions 91 that contact the surface of the eccentric cam 8 are provided at both ends of the pressing plate 9, and the cam contact portion 91 contacts the surface of the eccentric cam 8. By contacting, the camshaft is urged to rotate to a predetermined angle. Here, the end face shape of the cam contact portion 91 of the present embodiment is formed in an arc shape, and the eccentric cam 8 is in a predetermined direction when the cam contact portion 91 is in contact with the large diameter portion 82 of the eccentric cam 8. Even when the cam contact portion 91 abuts on the surface of the eccentric cam 8 other than the large-diameter portion 82, the surface of the eccentric cam 8 having the circular cross section is biased. It is the structure which can be contact | abutted and can be stabilized. In addition, as a scene where the large diameter portion 82 of the eccentric cam 8 contacts the cam contact portion 91, the longitudinal direction of the protruding piece 71 rotates, and the longitudinal direction of the wing housing 72 (projects above the surface of the wing door 13). In this scene, the cam contact portion 91 has an arcuate shape, which limits the rotation range of the projecting piece 71. Therefore, the projecting piece 71 rotates more than necessary. It is possible to avoid moving.

  Since the locked member 7 is configured as described above, the compression spring 79 is interposed between the regulating plate 10 and the pressing plate 9 provided above the housing 72 so that the pressing plate 9 faces downward. The eccentric cam 8 contacting the cam contact portion 91 of the restricting plate rotates the cam shaft in a state where the protruding piece 71 is inclined as shown in the figure. And when the external force which cancels the said inclination acts with respect to this protrusion 71, the said eccentric cam 8 will push up the press board 9 against the urging | biasing of the compression spring 79, and an external force will be lost. During the period, the inclination angle can be made gentle. When the external force is lost, the initial angle of inclination is formed again by the urging of the compression spring 79.

  Since the structure of the locking member 3 and the locked member 7 of the present embodiment is as described above, the operation mode when actually mounted on the cargo bed base 15 and the wing door 13 will be described.

  FIG. 7 is a view showing the movement of the locked member 7 and the operation mode of the locking means 3 when the wing door 13 is closed, and is gradually closed toward FIGS. 7 (a) to (c). Is progressing. As shown in this figure, when the wing door 13 approaches the loading platform base 15, the protruding piece 71 protruding from the locked member 7 attached to the edge of the wing door 15 reaches the surface of the loading platform base 15. (The load carrier base surface at this time includes the surface of the base portion 41 of the housing 4 of the locking means 3 assimilated to the load carrier base portion, and reaches the surface of the base portion 41 of the housing 4 in the drawing. ing). In this state, the protruding piece 71 is not yet locked by the locking means 4, and the protruding piece 71 of the locked means 7 is in a state of maintaining the initial inclination angle.

  From this state, as the closing of the wing door 13 proceeds (see FIG. 7B), the locked member 7 approaches the loading base 15 and lowers its height, and the locked The protruding piece 71 of the member 7 is also lowered, and the tip of the protruding piece 71 is further lowered by the rotation of the protruding piece 71. As a result, the distal end of the protruding piece 71 comes into contact with the proximal end portion 53 continuous with the locking piece 52, and the proximal end portion 53 is lowered according to the degree of lowering of the distal end of the protruding piece 71. . As the base end portion 53 continuing to the locking piece 52 is lowered, the locking piece 52 rotates about the pivot 47, and as a result, the locking piece 52 is brought into an upright state. Will be migrated.

  When the rotation of the locking piece 52 proceeds, that is, when the closing of the wing door 13 progresses and the protruding piece 71 of the locked member 7 is greatly lowered (see FIG. 7C), the locking is performed. When the piece 52 is completely upright, the locking piece 52 comes into contact with the housing 72 of the locked member 7 to complete the locking of the locked member 7. At this time, although the locking piece 52 in this embodiment is in contact with the locked member 7, it can be in a state of being in contact with and locking to the surface of the wing door 13. In any case, the wing door 13 is brought into contact with the vicinity of the edge to be locked. As for the state of the protruding piece 71, the base end 53 that is continuous with the locking piece 52 is between the surface of the housing base 41 (the surface of the loading platform base 15) when the locking piece 52 stands. The gap is just enough to allow the protruding piece 71 to enter. When the protruding piece 71 enters the gap, the locking piece 71 is fixed with a wedge, and the protruding piece 71 rises in the vertical direction. Thus, the standing state of the locking piece 52 is not canceled unless it is removed from the gap.

  Further, unlike the locus of closing the wing door 13 as described above, when the protruding piece 71 of the locked member 7 reaches the locking piece 52 first, the relationship between the locking piece 52 and the protruding piece 71. Is different from the above. That is, as shown in FIG. 8, when the edge of the wing door 13 approaches the loading platform base 15 from a low position, the protruding piece 71 of the locked member 7 is the surface of the locking piece 52 of the locking means 3. (See FIG. 8A). When the edge of the wing door 13 is further lowered from this state, the locking piece 52 is lowered against the bias of the compression spring 46, or the protruding piece 71 is resistant to the bias of the compression spring 79. As a result, the contact state is maintained. When the edge of the wing door 13 approaches the loading platform base 15, the distal end of the protruding piece 71 moves toward the surface of the loading platform base 15, and further moves to the proximal end 53 that continues to the locking piece 52. The base end portion 53 can be lowered and the locking piece 52 can be erected by urging both the above or by lowering the wing door.

  Here, as shown in FIG. 8 (b), when the closing locus of the wing door 13 is special, the protrusion is caused by the balance between the rising angle of the locking piece 52 and the inclination angle of the protruding direction of the protruding piece 71. It has been assumed that the piece 71 cannot enter the gap between the base end portion 53 continuous with the locking piece 52 and the surface of the loading platform base portion 15. Therefore, as in the present embodiment, both the locking piece 52 and the protruding piece 71 can be retracted against the bias by the spring (the locking piece 52 can be lowered and the protruding piece 71 can be raised). When one of the wing doors is strongly compressed by its own weight or the like, the angle at which the protruding portion 71 can enter the gap can be obtained. FIG. 8C shows a state in which the protruding piece 71 is retracted (raised). As shown in this figure, the edge of the wing door 13 is moved toward the loading base 15 by raising the protruding piece 71. It is possible to move in a direction approaching the door (the closed state proceeds), and by the progress of the closed state of the wing door, the inclination angle of the protruding piece 71 is reduced, so that the gap can enter the gap. It is.

  Although the present embodiment is as described above, it is possible to take various aspects without departing from the spirit of the present invention. For example, the long holes 45 and 46 of the housing 4 in the locking means 3 can be slightly inclined in addition to the vertical direction. In this case, when the pivot 47 to be inserted is lowered, the long holes 45 and 46 are formed so that the gap formed between the base end portion 53 continuous to the locking piece 52 and the housing base portion 41 gradually increases. It is preferable to adjust the direction. Similarly, the long holes 74 and 75 provided in the wing housing 72 for restricting the moving direction of the protruding piece 71 are also formed on the straight line from the edge of the wing door 15 along the protruding direction. It can be set as the structure which inclines slightly with respect to.

  Further, although the compression spring is used as the biasing means for the locking piece 52 and the protruding piece 71, it can be biased in a predetermined direction by other methods. Further, the locking piece 52 is in contact with the surface of the wing housing 72 of the locked member 7 in the upright state. It can be brought into contact with the surface.

  In addition, although the triangular insertion part 63 is provided in the both ends of the pivot insertion part 63 so that the state which inclined this latching piece 52 becomes constant (refer FIG. 2), this projection part is a pivot insertion part. By being provided in 63, the tilting direction of the locking piece 52 (the angle when tilted to the fully open state) does not change even when the pivot moves up and down, and the relative position to the protruding piece 71 does not change. The relationship is stable in terms of angle.

It is a perspective view which shows the outline of the truck provided with the wing door. It is a disassembled perspective view of a latching means. It is sectional drawing of a latching means. It is a disassembled perspective view of a to-be-latched member. It is a perspective view of a to-be-latched member. It is sectional drawing of a to-be-latched member. It is explanatory drawing which shows the operation | movement aspect of this embodiment. It is explanatory drawing which shows the operation | movement aspect of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading platform part 2 Protruding member 3 Locking member 4 Housing 5 Locking part main body 6 Energizing part 7 Locked member 8 Eccentric cam 9 Pressing plate 11 Loading bed front part 13 Loading bed rear part 13 Wing door 13a Loading bed side part 13b Roofing part 13c Roof frame 13d, 13e Wing frame 13f Wing door edge 14 Loading platform bottom 15 Loading platform base 16, 17 Cylinder 41 Housing base 42 Peripheral 43, 44 Holding section 45, 46 Long hole 47 Axis 51 Rotating section 52 Locking piece 53 Base End portion 61 Compression spring 62 Spring restriction portion 63 Pivot insertion portion 64 Press restriction portion 70 Restriction plate 71 Projection piece 72 Wing housing 73 Support shaft 74, 75 Long hole 76 Projection piece base 77 Spring holding shaft 78 Base shaft portion 79 Compression spring 81 Through hole 82 Large diameter part 91 Cam contact part

Claims (10)

In the truck bed structure composed of the bed base and the wing door,
A locking device for a wing door, comprising: a locked member protruding from an edge of the wing door; and locking means provided so as to be able to sandwich the locked member in the vicinity of the edge of the load carrier base. ,
The locked member is a locked member provided with a protruding piece that is allowed to rotate within a predetermined range and is capable of moving back and forth in the protruding direction at the edge of the wing door,
The locking means has a locking piece that can rotate within a predetermined range, and a rotation shaft of the locking piece is provided so as to be able to advance and retreat in a substantially vertical direction, and the locking piece rotates to stand up. A gap corresponding to the wall thickness of the member to be locked is formed between the locking piece and the surface of the loading base in the vicinity of the rotation shaft, and the vicinity of the tip of the locking piece is the end of the wing door. A locking device for a wing door, wherein the locking device is in contact with the vicinity of an edge. The protruding piece of the locked member is a protruding piece urged outward in the protruding direction from the edge of the wing door, and the locking piece of the locking means is locked upwardly The wing door locking device according to claim 1, wherein the locking device is a piece. The locked member is a locked member composed of a wing housing mounted on the front side wall surface of the wing door, and a protruding piece attached to the wing housing, and is provided at the base of the protruding piece. An eccentric cam having a through hole is fixed, a support shaft is inserted into the through hole of the eccentric cam, the support shaft is movable along a long groove provided in the wing housing, and A spring holding shaft supported by the support shaft is loosely inserted into the regulating plate inside the wing housing while inserting the pressing plate, and a compression spring is inserted into the spring holding shaft between the pressing plate and the regulating plate. The locking device for a wing door according to claim 1 or 2. A roof frame laid in the center of the roof of the loading platform along the center line in the longitudinal direction of the truck, a rear frame of the loading platform that supports the roof frame at the rear and forms a frame of the rear of the loading platform, and the front and rear of the roof frame A substantially inverted L-shaped wing frame supported in the vicinity of the edge and contrasted on both the left and right sides of the roof frame, a roof forming portion that is supported by the wing frame and forms a load carrier roof portion, and a side surface forming portion that forms a load carrier side surface The wing door, the cylinder device provided between the wing frame and the loading platform rear frame, and the loading platform base that forms part of the side surface from the left and right ends of the loading platform bottom. In the truck bed structure,
A locking device for a wing door comprising: a locked member protruding from an edge of the wing door; and a locking means provided so as to be able to sandwich the locked member in the vicinity of the edge of the load carrier base,
The locked member is a locked member that includes a protruding piece that is allowed to rotate within a predetermined range and that can be advanced and retracted in a direction protruding from the edge of the wing door.
The locking means has a locking piece that can rotate within a predetermined range, and a rotation shaft of the locking piece is provided so as to be able to advance and retreat in a substantially vertical direction, and the locking piece rotates to stand up. A gap corresponding to the wall thickness of the member to be locked is formed between the locking piece and the surface of the loading base in the vicinity of the rotation shaft, and the vicinity of the tip of the locking piece is the end of the wing door. A locking device for a wing door, wherein the locking device is in contact with the vicinity of an edge. A roof frame laid in the center of the roof of the loading platform along the center line in the longitudinal direction of the truck, a rear frame of the loading platform that supports the roof frame at the rear and forms a frame of the rear of the loading platform, and the front and rear of the roof frame A substantially inverted L-shaped wing frame supported in the vicinity of the edge and contrasted on both the left and right sides of the roof frame, a roof forming portion that is supported by the wing frame and forms a load carrier roof portion, and a side surface forming portion that forms a load carrier side surface The wing door, the cylinder device provided between the wing frame and the loading platform rear frame, and the loading platform base that forms part of the side surface from the left and right ends of the loading platform bottom. In the truck bed structure,
A plurality of locked members that protrude from the edge of the wing door with an appropriate interval, and the locked member at a position facing the locked member in the vicinity of the edge of the load carrier base. A wing door locking device comprising locking means provided so as to be able to sandwich the handle,
The locked member is a locked member that includes a protruding piece that is allowed to rotate within a predetermined range and that can be advanced and retracted in a direction protruding from the edge of the wing door.
The locking means has a locking piece that can rotate within a predetermined range, and a rotation shaft of the locking piece is provided so as to be able to advance and retreat in a substantially vertical direction, and the locking piece rotates to stand up. A gap corresponding to the wall thickness of the member to be locked is formed between the locking piece and the surface of the loading base in the vicinity of the rotation shaft, and the vicinity of the tip of the locking piece is the end of the wing door. It is a locking means that comes into contact with the vicinity of the edge,
A locking device for a wing door, wherein each locked member is locked individually when it reaches the locking means. The protruding piece of the locked member is a protruding piece biased in a direction protruding from the edge of the wing door, and the locking piece of the locking means is a locking piece biased upward. The wing door locking device according to claim 4 or 5. The locking device for a wing door according to claim 6, wherein one or both of the protruding piece and the locking piece are retracted against the biasing force depending on a relative positional relationship between the protruding piece and the locking piece. The locked member is a locked member composed of a wing housing mounted on the front side wall surface of the wing door, and a protruding piece attached to the wing housing, and is provided at the base of the protruding piece. An eccentric cam having a through hole is fixed, a support shaft is inserted into the through hole of the eccentric cam, the support shaft is movable along a long groove provided in the wing housing, and A spring holding shaft supported by the support shaft is loosely inserted into the regulating plate inside the wing housing while inserting the pressing plate, and a compression spring is inserted into the spring holding shaft between the pressing plate and the regulating plate. The locking device for a wing door according to any one of claims 4 to 7. The locking piece is pivotally supported by a shaft portion that is movable in a substantially vertical direction, and is provided with a long locking main body portion projecting outward from the shaft portion, and the locking main body portion. A locking action portion that protrudes to the opposite side of the shaft portion while being continuous, and when the locking piece rotates until the locking main body portion is raised, the locking action portion and the loading platform base A locking piece configured so as to form a gap corresponding to the thickness of the locked member, and when the tip of the locked member reaches the locking action portion, When the locking member lowers the locking action part, the entire locking piece is rotated, and the tip of the locked member enters the gap between the locking action part and the loading base, The locked member is allowed to move only in the vertical direction, and the locking piece is restricted from rotating in the tilting direction. Wing door locking device according to any one of claims 1 to 8. The wing door is a wing door having a structure in which both ends in the front-rear direction are supported by a wing frame, and an intermediate portion is slightly bent downward, and the locked member is configured to be bent immediately before the wing door is closed. Depending on the degree, when the edge of the wing door moves exclusively in the vertical direction, the front end of the locked member reaches the surface of the loading base and the locked member starts rotating. When reaching the locking piece and the edge of the wing door moves exclusively in the left-right direction, the protruding piece of the locked member that has reached the locking piece is retreated, and the tip of the protruding piece is 10. The locking device for a wing door according to claim 1, wherein the locking device is a locked member that can slide on the surface of the locking piece.

Images