JP5281880B2 - Opening and closing device for packing box lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing device for a lid body of a packing box, which is relatively inexpensive, is freely designed with the operational quantity of an operating handle for opening/closing the lid body, and reliably prevents the operating handle from being moved in the opening/closing direction by the force such as its own weight of the lid body. <P>SOLUTION: The opening/closing device for the lid body of the packing box has a locking mechanism 24 changing the locked state in which the lid body for opening/closing an upper opening part of the packing box 14 is moved in the opening/closing direction by operating the operating handle 13 attached to an operation inputting unit 12, and the movement of the lid body is locked, and the unlocked state in which the lid body is moved in the opening/closing direction. When the operating handle 13 is attached to the operation inputting unit 12, the unlocked state is provided, in which an engagement member 53 is disengaged from an engagement groove 56 to operate the operating handle 13. When the operating handle 13 is detached from the operation inputting unit 12, the locked state is provided, in which the engagement member 53 is engaged with the engagement groove 56, and the movement of the lid body in the opening/closing direction is locked. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an opening / closing device for a cargo box lid that can move a lid for opening and closing an opening formed in a cargo box that can be loaded on a vehicle, for example, in the opening and closing direction.

  As an example of the above conventional opening / closing device for a cargo box lid, a pair of lids for opening / closing an upper opening formed in a cargo box that can be loaded on a vehicle can be moved in the opening / closing direction. There is a box lid opening and closing device (see, for example, Patent Document 1).

  When the pair of lids are opened and closed by using the opening / closing device for the cargo box lid, the operator can rotate the operation handle provided on the outer surface of the side wall of the cargo box. .

  Although not shown in this conventional opening / closing device for a cargo box lid, for example, a self-lock can be adopted so that the lid does not move in the opening / closing direction due to its own weight.

  In this self-locking, the operator can move the pair of lids in the opening and closing direction by operating the operation handle. However, the lids can be opened and closed depending on the weight of the pair of lids or the external force applied to the lids. For example, it can be realized by using a worm gear mechanism in which a worm and a worm wheel are combined.

The worm is provided with a drive shaft, and an operation handle is attached to the drive shaft. The worm wheel is provided with a driven shaft, and the driven shaft is connected to the pair of lids.
JP 2004-59121 A

  However, in the case where the worm gear mechanism is provided in the conventional opening / closing device for the cargo box lid body, the worm gear mechanism is relatively expensive, so that the cost of the entire apparatus increases.

  If the worm gear mechanism is used to reliably prevent the lid body from moving in the opening / closing direction due to the force of the pair of lid bodies due to its own weight or the like, the reduction ratio of the worm gear mechanism needs to be relatively large. That is, it is necessary to make the torsion angle of the worm smaller than the repose angle (friction angle).

  However, if the reduction ratio is increased, the amount of operation by which the operator rotates the operation handle when the lid is moved in the opening / closing direction increases, and workability decreases.

  The present invention has been made to solve the above-described problems, is relatively inexpensive, and can freely select the operation amount of the operation handle for opening and closing the lid and the force for operation. It is an object of the present invention to provide an opening / closing device for a cargo box lid that can be designed and can be reliably prevented from moving in the opening / closing direction by a force due to its own weight or the like.

The tension measuring device according to the present invention moves the lid for opening and closing the opening formed in the cargo box in the opening and closing direction by operating an operation handle that is detachably attached to the operation input unit. In the opening / closing device for the packing box lid that can be moved, the latching state in which the lid moves in the opening / closing direction and the non-locking state in which the lid can be moved in the opening / closing direction. When the operating handle is mounted on the operation input unit, the locking mechanism is in the non-locked state, and the operation handle can be operated. When the cover is removed, the locking mechanism is in the locked state, and the movement of the lid body in the opening / closing direction can be locked. Input shaft with input section An engaged portion having an engagement groove fixedly provided on the input shaft, and a retracted position provided on the fixed side portion and disengaged from the engagement groove when the operation handle is attached to the operation input portion. And an engagement member that moves to an engagement position that engages with the engagement groove when the operation handle is removed from the operation input portion, and the engaged portion includes a plurality of the engagement portions on an outer peripheral portion. Engagement grooves are provided, and the engagement grooves are formed so that inner surfaces facing each other are substantially parallel and extend toward the center of the input shaft. The engaging side edge and the notch portion are provided movably on the fixed side portion so as to move in a substantially linear direction substantially parallel to the input shaft, and the operation handle is connected to the operation input portion. The notch portion accommodates the outer peripheral portion of the engaged portion. When the operation handle is removed from the operation input portion, the engagement edge portion is a plate-like member that moves to an engagement position that engages with the engagement groove. Biasing means for urging the edge portion in a direction to engage the engagement groove is provided .

  According to the opening / closing device for the cargo box lid according to the present invention, when the operation handle is attached to the operation input unit, the locking mechanism is brought into the non-locking state and the operation handle can be operated. Therefore, the lid can be moved in the opening / closing direction by operating the operation handle. Then, when the operation handle is removed from the operation input unit, the locking mechanism is locked and the movement of the lid in the opening / closing direction can be locked. This is convenient because the lid can be forcibly fixed and held, for example, at an open position, a closed position, or an open position with a predetermined opening degree as necessary.

When the operation handle is attached to the operation input portion, the engaging member moves to the retracted position removed from the engaging groove, and is brought into the unlocked state. Therefore, when the operation handle is operated, the operation amount is transmitted to the lid through the input shaft, and the lid can be moved in the opening / closing direction. Then, when the operation handle is removed from the operation input unit, the engagement member moves to the engagement position where the engagement member engages with the engagement groove and enters the locked state. In this locked state, when a force that moves in the opening and closing direction due to its own weight or the like is applied to the lid, the force is engaged with the input shaft, the engaged portion, the engaging groove, and the engaging groove. Although transmitted to the engaging member, since the engaging member is provided on the fixed side portion, the movement of the lid in the opening / closing direction can be reliably locked.

Further, when the operation handle is attached to the operation input portion, the notch portion moves to a retracted position that accommodates the outer peripheral portion of the engaged portion, and at this time, the locking edge portion is disengaged from the engaging groove. The operator can operate the operation handle to move the lid to the open position with a desired opening degree. Next, when the lid is locked at the open position, the operation handle may be detached from the operation input unit at the open position. At this time, the engaging member moves in a substantially linear direction by the urging force of the urging means, and the engaging edge portion formed on the engaging member is provided on the outer periphery of the engaged portion. Of the engaging grooves, the engaging edge can be engaged with an engaging groove located in front of the moving direction. In this way, the lid can be locked at a desired opening position or closing position.

  Each engaging groove is formed such that inner surfaces facing each other are substantially parallel and extend toward the center of the input shaft, and the engaging member can engage with the engaging groove at its engaging edge. Since it is a plate-like member, as described above, the locked state can be reliably maintained. Furthermore, when the engaging edge is engaged with the engaging groove, an external force is applied to the lid, and the inner surface of the engaging groove exerts a force that presses the upper or lower surface of the engaging edge. Even if the inner surface of the mating groove generates a force that pushes the engaging edge outward in a direction perpendicular to the input shaft, the engaging edge is only in a direction substantially parallel to the input shaft. Since it cannot move, an engagement edge part can make it difficult to remove | deviate from an engagement groove | channel.

  In the opening / closing apparatus for the cargo box lid according to the present invention, when the operation handle is attached to the operation input unit, a retraction operation unit provided in the operation handle is provided in the retraction operation provided in the engagement member. It can be set as the structure which presses a to-be-operated part and moves the said engaging member to the said retracted position against the biasing force of the said biasing means.

  In this way, when the operation handle is attached to the operation input section, the retraction operation section of the operation handle presses the retraction operation section of the engagement member, and the engagement member is applied to the urging force of the urging means. It can be moved against the retracted position. When the engagement member moves to the retracted position, the engagement edge portion is disengaged from the engagement groove, and can be brought into an unlocked state. When the operating handle is moved away from the operation input portion, the retracting operation portion of the operating handle is pulled away from the retracted operated portion of the engaging member, so that the engaging member is biased by the biasing means. The engagement edge can automatically move to the engagement position where it engages with the engagement groove. Thus, the locked state is obtained.

  And the opening / closing apparatus of the cargo box cover body concerning this invention shall be equipped with the damper part which generate | occur | produces resistance with respect to the movement of the opening / closing direction of the said cover body.

  When the damper portion is provided in this manner, for example, when the lid body moves in the opening direction or the closing direction by the force or external force due to its own weight, a resistance force (braking force) is generated to reduce the moving speed. be able to.

  According to the opening / closing device for the cargo box lid according to the present invention, without using the worm gear mechanism, it is possible to lock the lid moving in the opening / closing direction and to move the lid in the opening / closing direction. Since the structure is provided with a locking mechanism that can be switched to a non-locking state that can be performed, the cost of the opening / closing device for the cargo box lid can be made relatively low.

  And since the configuration itself that switches between the locked state and the non-locked state with respect to the lid by the locking mechanism does not affect the operation amount of the operation handle for opening and closing the lid, in order to open and close the lid The amount of operation of the operating handle and the operating force can be freely selected and designed so as to have an appropriate magnitude, and in the opening and closing direction due to its own weight, external force applied to the lid, etc. The movement can be surely prevented.

In addition, since the urging means for urging the engaging member in the direction in which the engaging member is engaged with the engaging groove is provided, when the operator removes the operation handle from the operation input unit, the locking mechanism is automatically opened. Therefore, the operation to bring the locking mechanism into the locked state is unnecessary, and the workability is good. Furthermore, when the operator attaches the operation handle to the operation input unit, the locking mechanism is automatically unlocked with respect to the lid, so that an operation for bringing the locking mechanism into the unlocked state is unnecessary. Good workability.

Hereinafter, a reference technical example of the opening / closing device for a cargo box lid according to the present invention will be described with reference to FIGS. As shown in FIGS. 7 and 8, the opening / closing device 11 for the cargo box lid is configured so that the operator rotates the operation handle 13 that is detachably attached to the operation input unit 12. A pair of lids 15 and 15 for opening and closing the upper opening 14a formed in the box 14 can be moved in the opening and closing direction. FIG. 7 shows a closed state, and FIG. 8 shows an opened state.

  The packing box 14 can be loaded with, for example, waste or earth and sand, and can be used by being loaded on a vehicle or can be used after being dropped from the vehicle. As shown in FIGS. 5 to 7, the packing box 14 is a substantially rectangular box, and a rectangular upper opening 14 a is formed in the upper part, and a rectangular rear opening 14 b is also formed in the rear part. ing. The upper opening 14 a is opened and closed by a pair of lids 15 and 15, and the rear opening 14 b is opened and closed by a rear door 16.

Further, as shown in FIGS. 5 to 7, the substantially rectangular parallelepiped packing box 14 is formed by a front wall portion 17, left and right side wall portions 18 and 18, front and rear upper wall portions 19 and 19, and a bottom wall portion 20. Has been. In each of the four corners, columns 21, 21, 21, and 21 are provided, and a space that can store wastes and the like is formed inside. And what opens and closes the pair of lids 15 and 15 for opening and closing the upper opening 14a of the packing box 14 is the packing box lid opening and closing device 11 according to this reference technical example .

As shown in FIG. 7, an opening / closing device 11 for a cargo box lid according to this reference technical example includes an opening / closing mechanism 22 for opening / closing a pair of lids 15, 15, and an operation force transmission coupled to the opening / closing mechanism 22. A mechanism 23, a locking mechanism 24 provided in the operation force transmission mechanism 23, and an operation handle 13 for applying an operation force to the operation force transmission mechanism 23 are provided.

  As shown in the plan view of FIG. 5, the opening / closing mechanism 22 includes a left front opening / closing mechanism 26 and a left rear opening / closing mechanism 27 for opening / closing the left lid 15 (the upper lid 15 shown in FIG. 5). A right front opening / closing mechanism 28 and a right rear opening / closing mechanism 29 for opening and closing the lid 15 (the lower lid 15 shown in FIG. 5) are provided. Since the left front opening / closing mechanism 26, the left rear opening / closing mechanism 27, the right front opening / closing mechanism 28, and the right rear opening / closing mechanism 29 are equivalent to each other, the same parts are denoted by the same reference numerals, and the left front part The opening / closing mechanism 26 will be described, and the description of the other opening / closing mechanisms 27, 28, 29 will be omitted.

  As shown in FIG. 7, the left front opening / closing mechanism 26 has a support shaft 30 provided at the distal end portion of the left lid 15, and the distal end portion of the arm 31 is rotatable on the support shaft 30. The base end portion of the arm 31 is supported by a bearing 33 through a swing shaft 32 so as to be swingable. The bearing 33 is attached to the upper wall portion 19. Further, the left lid 15 is supported by a guide roller 34 provided on the upper portion of the side wall 18 of the packing box 14 so as to be movable in the opening and closing direction.

  According to the left front opening / closing mechanism 26 configured as described above, the left lid 15 is in the closed position while the arm 31 is in the right swing position shown in FIG. Then, when the arm 31 is swung counterclockwise around the swing shaft 32 and moved to the left swing position, the left lid 15 is moved to the left on the guide roller 34 as shown in FIG. It moves to a direction, and finally it will be in the open state which is substantially parallel to the side wall part 18 at intervals. Conversely, when the arm 31 in the left-side swing position shown in FIG. 8 is swung to the right-side swing position shown in FIG. 7, the left-side cover 15 in the open position can be moved to the close position. it can.

  However, as shown in FIG. 9, the left front opening / closing mechanism 26 (left rear opening / closing mechanism 27) and the right front opening / closing so that the left lid 15 and the right lid 15 can be moved in the opening / closing direction in synchronization. The swing shafts 32 and 32 of the mechanism 28 (the right rear opening / closing mechanism 29) are connected to each other via the first sprocket 35, the annular first chain 36, and the first sprocket 35. The first sprockets 35 and 35 are fixedly attached to the swing shafts 32 and 32, respectively, and the first chain 36 is hung on the two first sprockets 35 and 35 in an 8-shape.

  Further, as shown in FIG. 5, each of the rocking shafts 32 and 32 can be moved so that the right front opening / closing mechanism 28 and the right rear opening / closing mechanism 29 can move in the opening / closing direction in synchronization with each other. Are connected to each other via the third sprocket 37, the annular second chain 38, the second sprocket 39, the connecting shaft 40, the second sprocket 39, the second chain 38, and the third sprocket 37. The connecting shaft 40 is swingably supported by bearings 41 and 41, and second sprockets 39 and 39 are fixedly provided at respective end portions of the connecting shaft 40. Further, a third sprocket 37 is fixedly provided on each swing shaft 32, and a second chain 38 is hung on each of the two pairs of the second sprocket 39 and the third sprocket 37.

  Further, as shown in FIG. 7, in the closed state, the front end portions of the left and right lid bodies 15 and 15 are sealed so that the front end portions of the pair of lid bodies 15 and 15 do not directly contact each other. A member 42 is provided. In this closed state, the seal member 42 provided at the tip of each of the left and right lids 15 and 15 and the tip of each of the right and left lids 15 and 15 are in contact with each other. Thus, the pair of lid bodies 15 can be locked so as not to move further in the closing direction from the closed position.

  Then, as shown in FIG. 8, cushion rubber 43 is provided on the outer surface of each side wall portion 18 so that each of the pair of lid bodies 15, 15 does not directly contact the side wall portions 18, 18 in the opened state. It is. In this open state, the outer surfaces of the pair of lids 15 and 15 are in contact with the cushion rubber 43, whereby the pair of lids 15 and 15 are further moved in the opening direction from the open position. Can be locked.

  Further, as shown in FIG. 8, a damper portion 45 is connected to the swing shaft 32 via a link 44. The damper portion 45 can generate a braking force and reduce its moving speed when the pair of lid bodies 15 and 15 move in the opening direction or the closing direction by the force or external force due to their own weight. Is. The damper portion 45 is formed by using, for example, an air cylinder device, the tip portion of the piston rod 45a is slidably connected to the tip portion of the link 44, and the base end portion of the cylinder portion 45b is connected to the upper wall portion 19. It is swingably connected. Further, the base end portion of the link 44 is coupled to the swing shaft 32.

  Next, the operating force transmission mechanism 23 will be described with reference to FIGS. 7, 3, and 4. As shown in FIG. 7, the operating force transmission mechanism 23 is for transmitting the operating force to the opening / closing mechanism 22 when the operator rotates the operation handle 13. An operation input unit 12, an input shaft 46, a fourth sprocket 47, a third chain 48, and a fifth sprocket 49 that are detachably mounted are provided.

  As shown in the enlarged side view of FIG. 3, the operation input unit 12 has a substantially quadrangular prism shape formed at the tip of the input shaft 46. And this attachment hole 13a is formed in the substantially square hole so that the attachment hole 13a formed in the front-end | tip part of the operation handle 13 with respect to this operation input part 12 can be engage | inserted. The operation input unit 12 is exposed to the outside through an insertion hole formed in the front wall portion 17 so that the operator can fit the mounting hole 13a of the operation handle 13 from the outside of the front wall portion 17. Are arranged to be.

  As shown in FIG. 3, the input shaft 46 is rotatably supported by two bearings 50, 50, and a fourth sprocket 47 is fixedly provided on the input shaft 46. As shown in FIG. 7, a fifth sprocket 49 is fixedly provided on the swing shaft 32, and an annular third chain 48 is hung on the fifth sprocket 49 and the fourth sprocket 47. Note that the two bearings 50 and 50 that rotatably support the input shaft 46 are fixed to the mounting base 51 with bolts (not shown).

  According to the operating force transmission mechanism 23 shown in FIG. 7, when an operator mounts the mounting hole 13 a formed at the distal end portion of the operation handle 13 on the operation input unit 12 and rotates the operation handle 13. The rotation is transmitted to the swing shaft 32 provided in the right front opening / closing mechanism 28 via the operation input unit 12, the input shaft 46, the fourth sprocket 47, the third chain 48, and the fifth sprocket 49. The pair of lids 15 and 15 can be moved in the opening / closing direction by rotating the swing shaft 32. That is, when the operation handle 13 shown in FIG. 7 is rotated clockwise, the pair of lids 15 and 15 can be moved in the opening direction. Then, when the operation handle 13 is rotated counterclockwise, the pair of lids 15 and 15 can be moved in the closing direction.

  Next, the locking mechanism 24 will be described with reference to FIGS. As shown in FIG. 1, when the operating handle 13 is removed from the operation input unit 12, the locking mechanism 24 is in a locked state and moves the pair of lid bodies 15, 15 in the opening / closing direction. As shown in FIG. 3, when the operation handle 13 is attached to the operation input unit 12, the locking mechanism 24 is brought into an unlocked state, and the operation handle 13 can be operated. The lids 15 and 15 can be moved in the opening / closing direction.

  As shown in FIG. 1, the locking mechanism 24 includes an engaged portion 52 and an engaging member 53, and is provided on the mounting base 51. The mounting base 51 is provided on the side plate 55 via the leg portion 54, and the side plate 55 is provided on the inner surface of the front wall portion 17.

  As shown in FIGS. 1 and 2, the engaged portion 52 is a disk-like member, and an input shaft 46 is fixedly provided at the center thereof. For example, a total of twelve engagement grooves 56 are formed on the outer peripheral portion of the engaged portion 52 at regular intervals along the outer peripheral portion. Each of the engagement grooves 56 is a U-shaped groove, and is formed so that inner surfaces facing each other are substantially parallel and extend toward the center of the input shaft 46.

  As shown in FIGS. 1 and 2, the engaging member 53 is an elongated, substantially rectangular plate-like member, and a base end portion is provided on the bracket 58 so as to be swingable via a pivot 57. The swinging direction of the engaging member 53 is in a plane parallel to the vertical plane. The bracket 58 is coupled to the mounting base 51.

  As shown in FIGS. 3 and 4, the engagement member 53 can swing and move to a retracted position separated from the engagement groove 56 when the operation handle 13 is attached to the operation input unit 12. Then, as shown in FIGS. 1 and 2, when the operation handle 13 is removed from the operation input portion 12, one edge portion of the engagement member 53 is disposed at a position facing the edge portion. It can be swung to an engagement position where it engages with the groove 56. Therefore, one edge portion of the engaging member 53 is formed in a shape and size that can engage with the U-shaped engaging groove 56.

  Further, as shown in FIGS. 1 and 2, an urging means 59 is attached to the engaging member 53. The urging means 59 is, for example, a tension coil spring, and urges the engaging member 53 in a direction to engage the engaging groove 56. The biasing means 59 has one end connected to the base end of the engaging member 53 and the other end connected to the retaining bracket 60. The retaining bracket 60 is coupled to a fixing plate 61 provided on the mounting base 51.

  In addition, 62 and 62 shown in FIG. 1 are tension bolts. The two tension bolts 62 and 62 are for applying tension to the third chain 48, and each head is engaged with the fixing plate 61. And the front-end | tip part of each of the two tension bolts 62 and 62 is fastened and connected to the retaining plate 63 with nuts 64 and 64. The retaining plate 63 is coupled to the front wall portion 17 and the side plate 55. Moreover, the mounting base 51 is attached to the leg part 54 with a volt | bolt (not shown) so that movement to the direction which applies tension is possible.

  Further, as shown in FIG. 1, a protrusion 65 is formed at the proximal end portion of the engaging member 53. The protrusion 65 protrudes in the direction toward the operation input unit 12. As shown in FIG. 3, when the projection 65 is attached to the operation input portion 12 in the attachment hole 13a of the operation handle 13, a short cylindrical retraction operation portion in which the attachment hole 13a is formed. 66 so as to be pressed by 66.

  According to the operation handle 13 in which the retracting operation portion 66 is formed in this way, as shown in FIG. 3, when the operation input portion 12 is mounted in the mounting hole 13 a of the operation handle 13, the operation handle 13 is provided. The retracting operation portion 66 is pressed against the protrusion 65 provided on the engaging member 53 to swing the engaging member 53 against the urging force of the urging means 59 to move from the engaging position to the retracting position. Can be moved to. Thus, it can be set as a non-locking state. In this non-locking state, the operation handle 13 can be rotated, and the pair of lids 15 and 15 can be opened and closed by rotating the operation handle 13.

  Next, as shown in FIG. 1, when the operation handle 13 is moved in a direction in which the operation input unit 12 is extracted from the mounting hole 13 a of the operation handle 13, the retraction operation unit 66 provided on the operation handle 13 is moved. Since the engagement member 53 is separated from the protrusion 65 provided on the engagement member 53, the engagement member 53 is urged by the urging means 59 and automatically swings to the engagement position where the engagement member 56 is engaged. Can do. Thus, the locked state is obtained. In this locked state, the operation input unit 12 cannot be rotated, and the lid bodies 15 and 15 are locked so as not to move in the opening and closing direction even when an external force is applied to the pair of lid bodies 15 and 15. Can do.

  Next, the operation of the opening / closing device 11 for the cargo box lid configured as described above will be described. Now, as shown in FIG. 7, the pair of lids 15, 15 are in a closed state, and as shown in FIG. 1, the operation input unit 12 is not attached to the operation handle 13. As a result, the pair of lid bodies 15 and 15 are not moved in the closing direction due to their own weight or external force due to the weights of the lid bodies 15 and 15 and the external force, since the respective edge portions of the lid bodies 15 and 15 are abutted with each other via the seal member 42. ing.

  As shown in FIGS. 1 and 2, since the engaging member 53 of the locking mechanism 24 is engaged with the engaging groove 56, the pair of lids 15 and 15 are in the closing direction and the opening direction. The locked state is locked so as not to move in either direction. Thereby, it is possible to double lock the movement of the pair of lids 15 and 15 in the closing direction.

  Next, when moving the pair of lids 15 and 15 to the open position, first, the operation handle 13 is attached to the operation input unit 12 as shown in FIGS. As a result, the engaging member 53 swings in a direction to disengage from the engaging groove 56 and moves to the retracted position to be in an unlocked state.

  When the operator rotates the operation handle 13 shown in FIG. 7 in the unlocked state in the clockwise direction, the rotation is applied to the pair of lids 15 and 15 via the operation force transmission mechanism 23 and the opening / closing mechanism 22. As shown in FIG. 8, the pair of lid bodies 15, 15 can be moved in the opening direction to be in the open state. When the operation handle 13 is removed from the operation input unit 12 in this open state, the operation state becomes a locked state as shown in FIG. 1, and the pair of lids 15 and 15 are placed in either the closing direction or the opening direction. It can be locked so as not to move.

  Next, when the pair of lids 15 and 15 are to be opened with a desired opening degree, first, the operation handle 13 is attached to the operation input unit 12 as shown in FIGS. As a result, the opening / closing device 11 is brought into an unlocked state. Then, in this unlocked state, for example, the operator rotates the operation handle 13 shown in FIG. 7 in the clockwise direction to move the pair of lids 15 and 15 to the open position with a desired opening degree. When the operating handle 13 is removed from the operation input unit 12 in the open state with the desired opening degree, the pair of lid bodies 15 in the open state with the desired opening degree are brought into a locked state as shown in FIG. 15 can be locked so as not to move in either the closing direction or the opening direction.

  As described above, according to the opening / closing device 11 for the cargo box lid shown in FIG. 1, the latching state (FIG. 1) latches the lids 15, 15 moving in the opening / closing direction without using the worm gear mechanism. Reference) and a non-locking state (see FIG. 3) in which the lids 15 and 15 can be moved in the opening and closing direction. The cost of the switchgear 11 can be made relatively low.

  And the structure itself which switches to the latching state with respect to the cover bodies 15 and 15 by the latching mechanism 24 and a non-locking state does not affect the operation amount of the operation handle 13 for opening and closing the lid bodies 15 and 15. Therefore, it is possible to freely select and design the operation amount of the operation handle 13 for opening and closing the lid bodies 15 and 15 so that the operation force has an appropriate magnitude. Thus, the movement in the opening / closing direction due to the weight of 15 or the external force applied to the lids 15 and 15 can be reliably prevented.

  Further, according to the opening / closing device 11 for the cargo box lid, as shown in FIGS. 1 and 3, as shown in FIG. 1 and FIG. Therefore, when the operator removes the operation handle 13 from the operation input unit 12, the engagement member 53 is automatically engaged with the engagement groove 56 by the urging force of the urging means 59, and the lid members 15, 15 are engaged. On the other hand, it is in a locked state (see FIG. 1), and an operation for engaging the engaging member 53 with the engaging groove 56 is unnecessary, and workability is good. Further, when the operator attaches the operation handle 13 to the operation input unit 12, the retracting operation unit 66 presses and moves the projection 65, so that the engagement member 53 is automatically pulled away from the engagement groove 56, and the lid Since the bodies 15 and 15 are not locked (see FIG. 3), an operation of pulling the engaging member 53 away from the engaging groove 56 is unnecessary, and the workability is good.

  Further, for example, during the movement of the pair of lid bodies 15 and 15 in the opening direction or the closing direction, an external force that moves the lid bodies 15 and 15 in the opening direction or the closing direction or a force due to its own weight is applied. When working, the damper portion 45 can generate a braking force that suppresses the movement of the pair of lids 15 and 15 in the direction in which the external force or the like is applied. As a result, it is possible to prevent the operation handle 13 from rotating at a high speed in the direction in which the external force is applied. In this state, when the operation handle 13 is removed from the operation input unit 12, the engagement member 53 is automatically urged by the urging means 59 to swing and engage with the engagement groove 56. It becomes. In this locked state, the pair of lid bodies 15 can be reliably locked.

  That is, for example, when the operation handle 13 is operated to move the lids 15 and 15 to the opening position of a desired opening degree and try to lock the opening body to the opening position, the state shown in FIGS. As described above, when the operation handle 13 is removed from the operation input unit 12 at the open position, the engaging member 53 is urged by the urging means 59 toward the engaged portion 52, and the engaged portion 52. Of the plurality of engaging grooves 56 provided on the outer periphery of the engaging groove 53 can be engaged with the engaging groove 56 positioned on the side toward which the engaging member 53 faces. In this way, the lid bodies 15 can be locked at a substantially desired opening position.

  As shown in FIG. 2, each engaging groove 56 is formed so that inner surfaces facing each other are substantially parallel and extend toward the center of the input shaft 46. 56, the engagement member 53 engages with the engagement groove 56, so that the force is applied to the lids 15 and 15 in either the opening direction or the closing direction. Even if applied, the force does not act in the direction of removing the engaging member 53 from the engaging groove 56, and the locked state can be reliably maintained.

  Further, in the locked state shown in FIG. 1, when a force that moves in the opening / closing direction due to its own weight or the like is applied to the lids 15 and 15, the force is applied to the fifth sprocket 49, the third chain 48, and the fourth sprocket. 47, the input shaft 46, the engaged portion 52, the engaging groove 56, and the engaging member 53 that engages with the engaging groove 56. The engaging member 53 is provided on the mounting base 51 on the fixed side. Therefore, the movement of the lids 15 and 15 in the opening / closing direction can be reliably locked.

Next, an embodiment of the opening / closing device for a cargo box lid according to the present invention will be described with reference to FIGS. The difference between the opening / closing device of the packing box lid of this embodiment and the opening / closing device 11 of the packing box lid of the reference technical example is that the locking mechanism 71 of the embodiment shown in FIGS. Is different from the locking mechanism 24 of the reference technical example shown in FIG.

That is, in the locking mechanism 24 of the reference technical example shown in FIG. 3, the engagement member 53 swings around the pivot 57 by attaching / detaching the operation handle 13 to / from the operation input unit 12. Configuration in which the edge portion of 53 can be switched between a retracted position (non-locking state) in which the edge portion is not engaged with the engaging groove 56 and an engaging position (locking state) to be engaged (oscillation movement type) ).

On the other hand, in the locking mechanism 71 of the embodiment shown in FIGS. 14A and 14B, the engagement member 72 is linearly reciprocated by attaching and detaching the operation handle 13 to the operation input unit 12. The engagement position 72a of the engagement member 72 can be switched between a retracted position (unlocked state) where the engagement edge portion 72a is not engaged with the engagement groove 56 and an engaged position (locked state) where the engagement member 72 is engaged. It is a configuration (linear movement format).

Other than this, the configuration is the same as that of the reference technical example and operates in the same manner. Therefore, the equivalent parts are denoted by the same reference numerals, and detailed description thereof is omitted. 10 to 12 show the locking mechanism 71 in the non-locking state, where FIG. 10A is a plan view, FIG. 10B is a right side view, FIG. 11A is a left side view, FIG. (B) is a front view, FIG. 12 (a) is a left side perspective view, and FIG. 12 (b) is a right side perspective view.

As shown in FIGS. 10A and 10B, the locking mechanism 71 of this embodiment includes an engaged portion 52 and an engaging member 72, which are provided on the mounting base 51. Yes. The mounting base 51 is provided on the side plate 55 via the leg portion 54, similarly to the locking mechanism 24 of the reference technical example shown in FIG. 1, and the side plate 55 is provided on the inner surface of the front wall portion 17. .

The engaged portion 52 is equivalent to that of the reference technical example shown in FIG. 1 and is a disk-like member, and the input shaft 46 is fixedly provided at the center thereof. The input shaft 46 is provided on the mounting base 51 so as to be rotatable via bearings 50 and 50. Further, for example, a total of twelve engagement grooves 56 are formed on the outer peripheral portion of the engaged portion 52 (see FIG. 11B).

  The engaging member 72 is disposed on the left side surface of the mounting base 51 as shown in FIG. The engaging member 72 is an elongated, substantially rectangular plate-like member, and an engaging edge portion 72 a and a notch portion 72 b are formed on the edge portion facing the mounting base 51. The engagement member 72 is provided on the brackets (73, 73) and (73, 73) so that the engagement edge portion 72a and the notch portion 72b are movable in a linear direction substantially parallel to the input shaft 46. .

  Further, as shown in FIG. 12A, the supporting structure for supporting the engaging member 72 so as to be movable in the linear direction is a long hole 74 extending in the linear direction at both ends of the engaging member 72. , 74 are formed, the guide pins 75, 75 are inserted into the respective elongated holes 74, 74, and the respective guide pins 75, 75 are provided in the respective brackets (73, 73), (73, 73). It is what. The brackets (73, 73) and (73, 73) are fixed to the mounting base 51.

  As shown in FIGS. 13A and 14B, when the operating handle 13 is attached to the operation input unit 12, the engaging member 72 moves to the back side in the linear direction, and the engaging edge 72a. Can move to a retracted position (unlocked state) that is disengaged from the engaging groove 56. At this time, the notch 72b is in a state of accommodating the outer peripheral portion where the engaging groove 56 of the engaged portion 52 is formed.

  Then, as shown in FIGS. 12A and 14A, when the operation handle 13 is removed from the operation input unit 12, the engagement member 72 moves to the front side in the linear direction, and the engagement edge 72a. Can move to the engaging position (locked state) where the engaging groove 56 engages. Therefore, the engaging edge 72 a of the engaging member 72 is formed in a shape and size that can engage with the U-shaped engaging groove 56. At this time, the notch 72 b has moved to a position away from the outer periphery of the engaged portion 52.

  Further, as shown in FIG. 12A, an urging means 59 is attached to the engaging member 72. This urging means 59 is, for example, a tension coil spring, and urges the engaging edge 72a of the engaging member 72 in a direction in which the engaging edge 72a is engaged with the engaging groove 56 (front side on the operation handle 13 side). Is. The biasing means 59 has one end connected to the tip of the engaging member 72 and the other end connected to the brackets 73 and 73 on the near side on the operation input unit 12 side. As shown in FIG. 12A, when the engaging member 72 is urged by the urging means 59 and is in the engaged position, the guide pins 75, 75 are brought into contact with the inner edges of the long holes 74, 74. The engagement member 72 is stopped at the engagement position.

In addition, 62 and 62 shown in FIG.10 (b) are tension bolts. These two tension bolts 62 and 62 are equivalent to those of the reference technical example shown in FIG. 1 and are for applying tension to the third chain 48, and each head is fixed. The plate 61 is engaged. And the front-end | tip part of each of the two tension bolts 62 and 62 is fastened and connected to the retaining plate 63 with nuts 64 and 64, as shown in FIG.

  Furthermore, a plan view of FIG. 14A showing a state in which the operation handle 13 is not attached to the operation input unit 12, and a state of FIG. 14B showing a state in which the operation handle 13 is attached to the operation input unit 12. As shown in the plan view, a substantially cylindrical retreat operation part 77 is provided at the base end part of the engagement member 72 via an attachment member 76.

  The retracted operated portion 77 accommodates the operation input unit 12 inside, and is provided coaxially with the operation input unit 12 in a state of being spaced from the operation input unit 12. Then, as shown in FIG. 14B, the retracted operated portion 77 is a short cylinder in which the mounting hole 13a is formed when the mounting hole 13a of the operation handle 13 is mounted on the operation input unit 12. It is formed so as to be pushed by the shape retracting operation section 66.

  Next, when the opening / closing device for the cargo box lid configured as described above is used, for example, the pair of lids 15 and 15 in a closed state are opened and closed and moved to a desired opening position. The procedure and operation will be described.

  First, as shown in FIGS. 13A, 13 </ b> B, and 14 </ b> B, the mounting hole 13 a of the operation handle 13 is mounted on the operation input unit 12. Then, the retracting operation part 66 provided on the operation handle 13 presses the retracted operated part 77 provided on the engaging member 72, and the engaging member 72 is resisted against the urging force of the urging means 59. It can be moved from the engagement position to the retracted position by moving toward the far side in the linear direction. In this way, the notched portion 72b formed in the engaging member 72 can be brought into the non-locking state in which the outer peripheral portion of the engaged portion 52 is accommodated. In this non-locking state, the operator can turn the operation handle 13, and by turning the operation handle 13, the pair of lid bodies 15, 15 can be opened and closed. Therefore, the lid bodies 15 can be moved to a desired opening position.

  Next, as shown in FIGS. 12A, 12 </ b> B, and 14 </ b> A, the operator moves the operation handle 13 in the direction in which the operation input unit 12 is extracted from the mounting hole 13 a of the operation handle 13. Then, the retracting operation portion 66 provided on the operation handle 13 is pulled away from the retracted operation portion 77 provided on the engaging member 72, so that the engaging member 72 is biased by the biasing means 59. By automatically moving toward the front side in the linear direction, the retracted position can be changed to the engaged position. In this way, the engagement edge portion 72 a formed on the engagement member 72 is engaged with the engagement groove 56. In this locked state, the operator cannot rotate the operation handle 13 (operation input unit 12), and the lids 15 and 15 are opened and closed even when an external force is applied to the pair of lids 15 and 15. It can be locked so as not to move. Therefore, the lid bodies 15 can be fixed at a desired opening position.

As shown in FIGS. 12A, 12B, etc., the engaging grooves 56 formed in the engaged portion 52 have inner surfaces facing each other substantially parallel, and the center of the input shaft 46. Since the engaging member 72 is a plate-like member having a constant thickness with which the engaging edge portion 72a can engage with the engaging groove 56, the engaging member 72 is surely secured in the same manner as in the reference technique example. The locked state can be maintained.

  Further, in the state where the engagement edge portion 72a shown in FIG. 12A is engaged with the engagement groove 56, an external force is applied to the lid body 15, and the inner surface of the engagement groove 56 is the upper surface of the engagement edge portion 72a. Even when a force that presses the lower surface is applied, the inner surface of the engagement groove 56 may generate a force that pushes the engagement edge 72a outward in a direction orthogonal to the input shaft 46. Since the engaging edge 72 a can move only in a direction substantially parallel to the input shaft 46, it is possible to prevent the engaging edge 72 a from coming off the engaging groove 56.

In the embodiment , as shown in FIGS. 14A and 14B, the engaging member 72 moves in a substantially linear direction in which the engaging edge portion 72 a is substantially parallel to the input shaft 46, thereby Since the portion 72a has a linear movement type structure that switches between the engagement position shown in FIG. 14 (a) and the retracted position shown in FIG. 14 (b), as shown in the reference technical example shown in FIG. Compared with the swing movement type that swings and switches 53, the movement space (linear movement distance d) of the engagement member 72 required for switching the engagement member 72 can be reduced. The locking mechanism 71 can be made small.

  And since the movement space of the engagement member 72 can be made small, possibility that the thing which obstructs the switching movement of the engagement member 72 will intervene in the movement space can be made low, and the reliability of operation can be improved. . In addition, since the moving distance d for switching the engaging member 72 can be shortened compared to the swing movement type, the stability and certainty of the switching operation can be improved.

  Further, as shown in FIG. 12 (a), the engaging member 72 is supported at both ends thereof in a substantially linear direction by guide pins 75, 75 and brackets (73, 73), (73, 73). If the both ends of the engaging member 72 are supported in this way, the rigidity of the mounting structure of the engaging member 72 can be increased relatively easily and inexpensively.

However, the opening / closing device 11 of the cargo box lid according to the above-mentioned reference technical example and the embodiment is applied to the pair of lids 15 and 15 for opening and closing the upper opening 14a of the cargo box 14, but instead of this. It can be applied to other lids of the packing box 14, for example, the rear door 16 for opening and closing the rear opening 14b.

And in the opening and closing device 11 for the cargo box lid according to the above-mentioned reference technical example and the embodiment , it is applied to the lids 15 and 15 provided in the cargo box 14 loaded on the vehicle. The present invention can be applied to a lid provided on a packing box that is not loaded on the container.

As shown in FIG. 10 (a), the engagement member 72 of the engagement mechanism 71 provided in the opening / closing device for the cargo box lid according to the above embodiment is an elongated substantially rectangular plate-like member, and one straight line thereof. In this example, the substantially central portion is an engagement edge portion 72a and a rectangular cutout portion 72b is formed on the left side thereof. The joint member is an elongated, substantially rectangular plate-like member, and is provided with a rectangular convex portion at one of the straight edges and at the substantially central portion thereof as an engaging edge, and the space on the left side is cut. It may be used as a notch.

  As described above, the opening / closing device for the cargo box lid according to the present invention is relatively inexpensive, and the operation amount of the operation handle for opening and closing the lid and the force for operation can be freely selected. It can be designed and has an excellent effect of reliably preventing the lid body from moving in the opening and closing direction due to the force of its own weight, etc., and can be applied to such a cargo box lid opening and closing device. Is suitable.

It is an enlarged side view which shows the latching state of the latching mechanism with which the opening / closing apparatus of the cargo box cover body which concerns on the reference technical example of this invention is provided. It is an enlarged front view which shows the latching state of the locking mechanism which concerns on the same reference technical example . It is an enlarged side view which shows the non-locking state of the locking mechanism which concerns on the same reference technical example . It is an enlarged front view which shows the non-locking state of the locking mechanism based on the reference technical example . It is a top view which shows the packing box in which the opening / closing apparatus of the packing box cover which concerns on the same reference technical example is provided. It is a side view which shows the packing box provided with the opening / closing apparatus of the packing box cover body which concerns on the same reference technical example . It is a front view which shows the closed state of the packing box in which the opening / closing apparatus of the packing box cover which concerns on the same reference technical example is provided. It is a front view which shows the open state of the packing box in which the opening / closing apparatus of the packing box cover which concerns on the same reference technical example is provided. It is a front view which shows the opening / closing apparatus of the packing box cover which concerns on the same reference technical example . It is a figure which shows the latching state of the latching mechanism with which the opening / closing apparatus of the cargo box cover body which concerns on one Embodiment of this invention is equipped, (a) is a top view, (b) is a right view. Is a view showing a locked state of the locking mechanism switchgear packing box lid according to the embodiment comprises, (a) shows the left side view, (b) is a front view. Is a view showing a locked state of the locking mechanism switchgear packing box lid according to the embodiment I comprises, (a) show the left side perspective view, (b) is a right side perspective view. It is a figure which shows the non-locking state of the locking mechanism with which the opening / closing apparatus of the cargo box cover body which concerns on the same embodiment is equipped, (a) is a left side perspective view, (b) is a right side perspective view. It is a figure which shows the latching mechanism with which the opening / closing apparatus of the cargo box cover body which concerns on the same embodiment is provided, (a) is a top view which shows a latching state, (b) is a top view which shows a non-locking state.

DESCRIPTION OF SYMBOLS 11 Opening and closing apparatus of a cargo box cover 12 Operation input part 13 Operation handle 13a Mounting hole 14 Cargo box 14a Upper side opening part 14b Rear part opening part 15 Lid body 16 Rear part door 17 Front wall part 18 Side wall part 19 Upper wall part 20 Bottom wall part 21 Post 22 Opening / closing mechanism 23 Operating force transmission mechanism 24 Locking mechanism 26 Left front opening / closing mechanism 27 Left rear opening / closing mechanism 28 Right front opening / closing mechanism 29 Right rear opening / closing mechanism 30 Support shaft 31 Arm 32 Swing shaft 33, 41, 50 Bearing 34 Guide roller 35 First sprocket 36 First chain 37 Third sprocket 38 Second chain 39 Second sprocket 40 Connecting shaft 42 Seal member 43 Cushion member 44 Link 45 Damper 45a Piston rod 45b Cylinder 46 Input shaft 47 Fourth sprocket 48 3rd chain 49 5th sprocket 5 Mounting base 52 Engagement part 53 Engagement member 54 Leg part 55 Side plate 56 Engagement groove 57 Pivot 58 Bracket 59 Energizing means 60 Retaining bracket 61 Fixing plate 62 Tension bolt 63 Retaining plate 64 Nut 65 Protrusion 66 Retraction operation part 71 Locking mechanism 72 Engaging member 72a Engaging edge 72b Notch 73 Bracket 74 Long hole 75 Guide pin 76 Mounting member 77 Retreated

Claims (3)

By operating an operation handle that is detachably attached to the operation input unit, a lid for opening and closing the opening formed in the packing box can be moved in the opening and closing direction. In switchgear,
A locking mechanism that switches between a locking state in which the lid body moves in the opening and closing direction and a non-locking state in which the lid body can be moved in the opening and closing direction;
When the operation handle is attached to the operation input unit, the locking mechanism is in the non-locking state and the operation handle can be operated.
When the operation handle is removed from the operation input unit, the locking mechanism is in the locked state, and the movement of the lid in the opening / closing direction can be locked.
The locking mechanism is rotatably provided on a fixed side portion and has an input shaft having the operation input portion,
An engaged portion fixed to the input shaft and having an engaging groove;
When the operation handle is mounted on the operation input unit, the fixed movement is moved to the retracted position removed from the engagement groove, and when the operation handle is removed from the operation input unit, the engagement groove An engagement member that moves to an engagement position to be engaged,
The engaged portion is provided with a plurality of engaging grooves on an outer peripheral portion, and the engaging grooves are formed so that inner surfaces facing each other are substantially parallel and extend toward the center of the input shaft. ,
The engaging member has an engaging edge and a notch, and is freely movable to the fixed side so that the engaging edge and the notch are moved in a substantially linear direction substantially parallel to the input shaft. When the operation handle is attached to the operation input portion, the notch portion moves to a retracted position that accommodates the outer peripheral portion of the engaged portion, and when the operation handle is removed from the operation input portion, The engagement edge is a plate-like member that moves to an engagement position that engages with the engagement groove;
An opening / closing device for a cargo box lid , comprising urging means for urging the engagement edge of the engagement member in a direction to engage the engagement groove . When the operation handle is attached to the operation input portion, the retraction operation portion provided on the operation handle presses the retraction operation portion provided on the engagement member, and the engagement member is moved. 2. The opening / closing device for a cargo box lid according to claim 1 , wherein the opening / closing device is moved to the retracted position against an urging force of the urging means. The opening / closing device for a cargo box lid according to claim 1, further comprising a damper portion that generates resistance against movement of the lid in the opening / closing direction.

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