JP5588369B2 - Container tightening device - Google Patents

Description

  The present invention relates to a fastening device for fastening a container to a vehicle body side.

  In Patent Document 1, the end portion of the support frame of the container chassis is formed of a hollow square tube, and the lower shaft portion of the twist lock is pivotally attached to the inner end portion of the support frame, and a handle is attached to the shaft portion. A structure is described in which one end of the container is fixed and the handle is operated from the outside in the width direction of the container chassis through a window opened on a side surface of the support frame.

  Patent Document 1 also describes a structure in which the support frame is attached so that it can be operated in the front-rear direction from the open end face of the end corner tube of the support frame in order to prevent the strength of the support frame from being lowered due to the opening of the window.

JP-A-11-106174

  As described in Patent Document 1, in the structure in which the handle is extended in the vehicle width direction and extended from the opening end face of the end corner tube of the support frame, it is not necessary to form a window on the support frame. It is possible to prevent a decrease in the strength of the support frame.

  However, since the extending direction of the steering wheel is limited to the vehicle width direction, it may not be applicable due to restrictions on the layout of the container chassis, or it may be difficult to protect the steering wheel during traveling.

  Further, when the shaft portion of the twist lock is separated from the opening end surface of the support frame, the rotation range necessary for the handle may not be ensured only by the opening end surface. In such a case, it is necessary to secure a rotation range of the handle by forming a notch groove or the like in the support frame, resulting in a decrease in strength of the support frame.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tightening device capable of suppressing a decrease in strength of a support frame without limiting the extending direction of the handle.

  In order to achieve the above object, the present invention is a tightening device for tightening a container to a support frame of a vehicle body, and includes a twist lock and a handle.

  The twist lock includes a lock rotation shaft that is supported rotatably with respect to the support frame and extends in the vertical direction, a locking portion that is provided at an upper end of the lock rotation shaft and rotates integrally with the lock rotation shaft, and a lock rotation shaft. And an action portion that rotates integrally with the lock rotation shaft at a predetermined position apart from the lock rotation shaft. The twist lock rotates within a range including a tightening position where the locking part tightens the container and an open position where the tightening is released.

The handle includes an intermediate portion that is rotatably supported with respect to the support frame about a handle rotation axis extending in the vertical direction and spaced apart from the lock rotation shaft, an operation portion on one end side operated by an operator, and a twist And an engaging portion on the other end side that engages with the action portion of the lock. The center of the lock rotation axis is set between the handle rotation axis and the action part, and the distance from the action part engaging the engagement part to the handle rotation axis is from the action part to the center of the lock rotation axis. It is set to be longer than the distance. With the engagement portion and the action portion engaged, the engagement portion allows the action portion to slide in a direction approaching and separating from the handle rotation axis, and is centered on the handle rotation axis. The rotational movement of the action portion is restricted, and the twist lock rotates in conjunction with the rotation of the handle by the engagement between the engagement portion and the action portion.

  In the above configuration, when the operator operates the operation portion on one end side of the handle and rotates the handle by the engagement between the engagement portion on the other end side of the handle and the action portion of the twist lock, Twist lock (lock rotating shaft) rotates.

  In addition, since the distance from the action part that engages with the engagement part to the center of the handle rotation axis is set to be longer than the distance from the action part to the center of the lock rotation axis, it is linked to the rotation of the handle. When the rotation amount of the handle when the twist lock rotates and the rotation amount of the twist lock are compared, the rotation amount of the handle is smaller than the rotation amount of the twist lock. For this reason, the amount of rotation of the handle when rotating the twist lock from the open position to the fastening position can be reduced as compared with the case of directly rotating the twist lock. Therefore, for example, when an opening window through which the handle is inserted is formed on the side wall of the support frame, the formation range of the opening window can be narrowed, and a decrease in the strength of the support frame can be suppressed. Further, in the structure in which the handle is extended from the opening end surface of the support frame, even when the lock rotation shaft is separated from the opening end surface of the support frame, the twist lock is rotated between the tightening position and the opening position. The rotation range of the handle can be set within a range allowed by the opening end face, and a decrease in strength of the support frame can be suppressed.

  As the difference between the distance from the engagement portion to the handle rotation axis and the distance from the engagement portion to the center of the lock rotation shaft increases, the ratio of the rotation amount of the handle to the rotation amount of the twist lock decreases. The distance from the handle rotation axis to the engaging portion and the distance from the center of the lock rotation shaft to the action portion may be set as appropriate according to the amount of rotation allowed for the handle.

  Further, the tightening device has a maximum urging force when the twist lock is in a predetermined neutral position between the tightening position and the release position, and the twist lock between the tightening position and the neutral position is moved toward the tightening position. There may be provided urging means for urging and urging the twist lock between the open position and the neutral position toward the open position.

  In the above configuration, when the twist lock is rotated to the tightening position, the urging force of the urging means assists the rotation of the twist lock from the neutral position to the tightening position, so that the operability is improved. Further, since the urging force of the urging means becomes maximum at the neutral position, it is possible to give a sense of moderation to the operator who operates the handle. Furthermore, the twist lock can be held in the tightening position and the open position by the urging force of the urging means.

  In addition, the tightening device may include a display unit that is fixed to the twist lock and that displays that the twist lock is set to the tightening position and the open position so that the twist lock can be visually recognized from the outside.

  In the above configuration, the operator can instantly determine whether the twist lock is set to the tightening position or the open position by visually recognizing the display unit from the outside, and the tightening is released. Can be prevented in advance.

  According to the present invention, it is possible to suppress a decrease in the strength of the support frame without limiting the extending direction of the handle.

It is a side view which shows the trailer with which the fastening apparatus of 1st Embodiment is mounted | worn. It is a top view which shows the frame structure of the trailer of FIG. It is a disassembled perspective view which shows the fastening device of 1st Embodiment. It is a figure which shows the state which assembled | attached the fastening apparatus of FIG. 3 to the vehicle body side, (a) is the side view seen from the vehicle width direction outer side, (b) is a VIb-VIb arrow sectional drawing of (a). . It is the perspective view which looked at the fastening device of the state where the twist lock was set to the open position from diagonally below. It is the perspective view which looked at the tightening device of the state where the twist lock was set to the tightening position from diagonally downward. It is a top view which shows typically the relationship between the rotation range of a handle | steering wheel, and the rotation range of a twist lock. It is a figure which shows the state by which the twist lock was set to the tightening position in the tightening apparatus of 2nd Embodiment, (a) is a top view, (b) is a side view. It is a figure which shows the state in which the twist lock | rock was set to the open position in the tightening apparatus of FIG. 8, (a) is a top view, (b) is a side view.

  A first embodiment of the present invention will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Moreover, in the following description, the left-right direction means the left-right direction with the vehicle facing forward.

  As shown in FIGS. 1 and 2, the trailer 2 of the present embodiment has a box-shaped container 7 loaded on a chassis frame (vehicle body) 3 and is pulled by the tractor 1.

  The chassis frame 3 includes a pair of left and right main beams 4 extending substantially in parallel along the vehicle front-rear direction, and a plurality of linear cross frames 5 arranged at predetermined intervals in the vehicle front-rear direction and extending in the vehicle width direction. Have Each cross frame 5 is substantially orthogonal to the main frame 4, and both ends of the cross frame 5 are coupled to the main beam 4. Wheels (tires) 6 are attached to the chassis frame 3 via a suspension device (not shown).

  A king pin 17 connected to the tractor 1 is provided at the front end of the chassis frame 3. In order to arrange the king pin 17 according to the height corresponding to the connecting portion of the tractor 1, the front end portion of the main beam 4 is raised by a step 12 called a gooseneck.

  Front and rear bolsters (support frames) 10 and 11 extending in the vehicle width direction are fixed to the left and right main beams 4. The left and right ends of the bolsters 10 and 11 extend from the main beams 4 so as to protrude outward in the vehicle width direction. A driving-side tightening device 20 is mounted on one end side (left side in the present embodiment) of hollow interiors at both left and right ends of each bolster 10, 11, and a driven side tightening device is mounted on the other end side (right side in the present embodiment). A device 40 is mounted. The driving-side tightening device 20 includes a handle 31 that is operated and rotated by an operator, and a twist lock 21 that rotates in conjunction with the rotation of the handle 31. The front and rear driven side tightening devices 40 have twist locks 41 respectively connected to the front and rear drive side twist locks 21 via a connecting shaft 50 (see FIG. 3). The driven side twist locks 41 are It is driven to rotate in conjunction with the rotation of the twist lock 21 on the drive side. Corner fittings (not shown) are provided at the front lower corner and the rear lower corner of the container 7, and the fastening devices 20, 40 are located immediately below the corner fitting of the container 7 placed on the chassis frame 3. To position. The twist locks 21 and 41 of the tightening devices 20 and 40 are rotatable between a tightening position and an open position, and the lock pins (locking portions) 22 and 42 of the twist locks 21 and 41 are respectively connected to the bolsters 10 and 40. 11 protrudes upward from the upper surface of 11. When the container 7 is placed at a predetermined position of the chassis frame 3 with the twist locks 21 and 41 set to the open position, the lock pins 22 and 42 enter the holes of the corner fittings. When the handle 31 is rotated in this state and the twist locks 21 and 41 are rotated from the open position to the tightening position, the lock pins 22 and 42 are engaged with the corner fittings, and the front and rear edges of the container 7 are the chassis frame. 3 is detachably fixed (tightened).

  Next, the driving-side tightening device 20 will be described in detail with reference to FIGS. Since the front and rear drive-side tightening devices 20 have substantially the same configuration, the rear side (left rear side) will be described below, and the description of the front side (left front side) will be omitted.

  The bolster 11 is fixed to a frame material having a U-shaped cross section having a bottom plate portion 13, a front plate portion 14 and a rear plate portion 15, and an upper end edge of the front wall portion 14 and an upper end edge of the rear wall portion 15. And an upper plate 16 for closing the upper opening. An opening window 18 through which the handle 31 is inserted is formed in the front plate portion 14. The opening window 18 is set in a rectangular shape whose vehicle width direction is longer than the vertical direction. In addition, you may comprise a bolster with frame materials of other shapes, such as a square pipe material.

  The tightening device 20 includes the twist lock 21, the handle 31, a base body 60, a coil spring (biasing means) 65, and a handle support body 70.

  The base body 60 includes a reinforcing plate 61 that is fixed to the upper surface of the bolster 11 (the upper surface of the upper plate 16), and a support base 62 that is fixed to the upper surface of the reinforcing plate 61. The support base 62 has a rectangular parallelepiped shape whose longitudinal direction is longer than the vehicle width direction. A central lower portion 62a of the support base 62 partially protrudes downward and is inserted through a hole (not shown) that communicates the upper plate 16 and the reinforcing plate 61. A rotation shaft insertion hole 63 that penetrates in the vertical direction is formed in the center of the support base 62.

  The twist lock 21 integrally includes the lock pin 22 and the lock rotation shaft 23. The lock pin 22 is rotatably supported by the base body 60 by being inserted through the rotation shaft insertion hole 63. That is, the lock pin 22 is supported rotatably with respect to the bolster 11 and extends in the vertical direction. The lock pin 22 has a rectangular pyramid shape that tapers upward, and is provided at the upper end of the lock rotation shaft 23 and rotates integrally with the lock rotation shaft 23. The outer periphery of the lower portion of the lock pin 22 is formed in substantially the same shape as the outer periphery of the support base 62. Due to the rotation of the lock rotation shaft 23, the twist lock 21 rotates between the open position and the tightening position rotated approximately 90 ° from the open position. In the open position, the longitudinal direction of the lock pin 22 substantially coincides with the longitudinal direction (vehicle front-rear direction) of the support base 62 (see FIG. 5), and in the tightening position, the longitudinal direction of the lock pin 22 is the longitudinal direction of the support base 62. It is almost orthogonal. When the container 7 (see FIG. 2) is placed at a predetermined position on the chassis frame 3 (see FIG. 2) with the twist lock 21 set to the open position, the lock pin 22 and the support base 62 are attached to the corner bracket of the container 7. Enter the hole. In this state, when the twist lock 21 is rotated from the open position to the tightening position, the lock pin 22 is engaged with the corner bracket, and the container 7 is detachably tightened to the chassis frame 3. Note that the rotation range of the twist lock 21 is regulated by a rotation range regulation plate portion 73 described later.

  The rotary connecting member 24 is fixed to the lower portion of the lock rotary shaft 23 that passes through the rotary shaft insertion hole 63 and enters the inside of the bolster 11 (below the central lower portion 62 of the support base 62). The rotary connecting member 24 includes a cylindrical collar 25 in which the lock rotation shaft 23 is inserted in an inner diameter portion, upper and lower plates 26 and 27 extending rearward from the collar 25 and facing each other in the upper and lower directions, and upper and lower plates 26 and 27. It has a connecting shaft (action part) 28 that penetrates and extends in the vertical direction. The collar 25 is fixed to the lock rotation shaft 23 by fastening a nut 81 to a bolt 80 that passes through the lock rotation shaft 23 and the collar 25. Thus, the twist lock 21 has the connecting shaft 28 that rotates integrally with the lock rotation shaft 23 at a predetermined position spaced from the lock rotation shaft 23. The connecting shaft 28 may be fixed to the upper and lower plates 26 and 27 or may be rotatably supported. A left end portion 50a of the connecting shaft 50 is rotatably connected to an upper portion of the connecting shaft 28 protruding upward from the upper plate 26. The lower end of the connecting shaft 28 protruding downward from the lower plate 27 is engaged with the other end of the handle 31 as described later, and the rear end 65a of the coil spring 65 is connected to the lower end of the connecting shaft 28. Is done.

  The handle support 70 is disposed below the opening window 18 and fixed to the lower rear surface (lower inner surface) of the front plate 14 of the bolster 11, and bends backward from the front end of the fixed plate 71. A handle support plate portion 72 extending from the rear end of the handle support plate portion 72, and a spring connecting portion 74 extending rearward from the rear surface of the fixed plate portion 71.

  The handle 31 includes an operation portion 32 on one end (front end) side, an intermediate plate portion (intermediate portion) 33 extending in a substantially horizontal direction, and a slide engagement groove (engagement portion) 34 on the other end (rear end) side. Have one.

  A bolt insertion hole 75 penetrating in the vertical direction is formed in the intermediate plate portion 33 and the handle support plate portion 72, and a nut 83 is screwed into a bolt 82 that passes through the bolt insertion hole 75, whereby the intermediate plate portion 33. Is rotatably supported by the handle support plate portion 72. The bolt insertion hole 75 is set at a position spaced forward from the lock rotation shaft 23. That is, the intermediate plate portion 33 is supported by the bolster 11 so as to be rotatable about a handle rotation axis (center axis of the bolt 82) 90 that is spaced apart from the lock rotation shaft 23 and extends in the vertical direction.

  The rear end of the intermediate plate portion 33 is inserted through the opening window 18 and exposed in front of the bolster 11, and the operation portion 32 is bent upward from the rear end of the intermediate plate portion 33 and extends rearward.

  A recess 73a through which the rear side of the intermediate plate 33 of the handle 31 is inserted is formed at the center of the rotation restricting plate 73, and the intermediate plate 33 of the handle 31 is inserted through the recess 73a. When the handle 31 comes into contact with the left and right inner edges of the recess 73a, the rotation of the handle 31 is restricted within the range from the open position to the tightening position.

  As shown in FIG. 7, the slide engagement groove 34 extends forward from the rear end edge of the handle 31 toward the handle rotation axis 90, and the lower portion of the connecting shaft 28 of the twist lock 21 is formed in the slide engagement groove 34. Insert and engage. In this engaged state, the slide engagement groove 34 allows the connecting shaft 28 to slide in the direction along the slide engagement groove 34, and intersects the slide engagement groove 34 (the handle rotation axis 90 is changed). The movement of the connecting shaft in the center rotation direction) is restricted. Instead of the slide engagement groove 34, a long hole may be provided.

  The twist lock 21 rotates in conjunction with the rotation of the handle 31 by the engagement of the slide engagement groove 34 and the connecting shaft 28. When the handle 31 is in the open position, the twist lock 21 is also set in the open position, and when the handle 31 is in the tightening position, the handle 21 is also set in the tightening position.

  The center 91 of the lock rotation shaft 23 is set between the handle rotation axis 90 and the connection shaft 28, and the position of the connection shaft 28 with respect to the slide engagement groove 34 is such that the handle 31 is in the open position (the solid line in FIG. 7). ) And the tightening position (indicated by a two-dot chain line in FIG. 7), the foremost position (the position closest to the handle rotation axis 90) is reached, and the handle 31 is substantially at the center between the open position and the tightening position When in the position (neutral position), the rearmost position (the position farthest from the handle rotation axis 90) is reached. When the handle 31 is in the neutral position, the center of the connecting shaft 28, the center 91 of the lock rotating shaft 23, and the handle rotating shaft 90 are aligned in a substantially straight line.

  In this way, in a state where the slide engagement groove 34 and the connecting shaft 28 are engaged, the distance from the connecting shaft 28 to the handle rotation axis 90 (the distance R1 between the connecting shaft 28 and the center 91 at the forefront position). 7 is set to be longer than the distance R2 from the connecting shaft 28 to the center 91 of the lock rotating shaft 23 (the rotation radius of the connecting shaft 28 around the lock rotating shaft 23).

  By disposing the connecting shaft 28, the lock rotation shaft 23, and the handle rotation axis 90 as described above, the rotation amount of the handle 31 becomes smaller than the rotation amount of the twist lock 21 that rotates in conjunction therewith. In the present embodiment, the connecting shaft 28, the lock rotating shaft 23, and the handle rotating shaft center 90 are set so that the rotating range θ2 of the handle 31 is approximately 45 °, which is approximately half of the rotating range θ1 (approximately 90 °) of the twist lock 21. And are arranged. The rotation amount of the handle 31 relative to the rotation amount of the twist lock 21 increases as the difference between the distance from the connection shaft 28 to the handle rotation axis 90 and the distance from the connection shaft 28 to the center 91 of the lock rotation shaft 23 increases. Since the ratio decreases, the above arrangement may be set as appropriate according to the amount of rotation allowed for the handle 31.

  As shown in FIGS. 5 and 6, the front end 65 b of the coil spring 65 is connected to the spring connecting portion 74. The coil spring 65 extends most when the twist lock 21 is in a predetermined neutral position between the tightening position and the release position (when the handle 31 is in the neutral position in this embodiment), and the urging force is maximized. The twist lock 21 between the tightening position and the neutral position is biased toward the tightening position, and the twist lock 21 between the open position and the neutral position is biased toward the open position. Instead of the coil spring 65, for example, a plate spring that urges the rotating connecting shaft 28 forward may be disposed between the inner surface (front surface) of the rear plate portion 15 of the bolster 11 and the connecting shaft 28. .

  According to the present embodiment, the distance from the connecting shaft 28 that engages with the slide engaging groove 34 to the handle rotating shaft 90 is longer than the distance from the connecting shaft 28 to the center 91 of the lock rotating shaft 23. Since it is set, the rotation amount of the handle 31 is smaller than the rotation amount of the twist lock 21 that rotates in conjunction with this. That is, the amount of rotation of the handle 31 when the twist lock 21 is rotated from the open position to the fastening position can be reduced as compared with the case where the twist lock 21 is directly rotated. Therefore, the formation range (left and right width) of the opening window 18 provided in the front plate portion 14 of the bolster 11 can be narrowed, and a decrease in strength of the bolster 11 can be suppressed.

  Further, in the structure in which the handle extending direction is set to the vehicle width direction and the handle operating portion extends from the opening end surface of the bolster, the lock rotation shaft is separated from the opening end surface of the support frame. The rotation range of the handle for rotating the twist lock between the tightening position and the release position can be set within a range allowed by the opening end surface, and a decrease in the strength of the support frame can be suppressed.

  That is, the strength reduction of the bolster 11 can be suppressed without restricting the extending direction of the handle 31.

  Further, when the twist lock 21 is rotated to the tightening position, the urging force of the coil spring 65 assists the rotation of the twist lock 21 from the neutral position to the tightening position, so that the operability is improved. Further, since the urging force of the coil spring 65 becomes maximum at the neutral position, it is possible to give a sense of moderation to the operator who operates the handle 31. Furthermore, the twist lock 21 can be held in the tightening position and the open position by the biasing force of the coil spring 65, respectively.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, since the display plate (display unit) 95 is fixed to the twist lock 21 of the first embodiment, the same components as those in the first embodiment are denoted by the same reference numerals. The description is omitted.

  The display plate 95 integrally includes a first plate portion 96 and a second plate portion 97. The first plate portion 96 has a bolt insertion hole (not shown) through which the bolt 80 is inserted, is disposed on the outer peripheral surface of the collar 25, and is fixed to the lock rotating shaft 23 by the bolt 80 and the nut 81. The first plate portion 96 extends along the vehicle width direction with the twist lock 21 set at the tightening position (see FIG. 8), and extends along the front-rear direction with the twist lock 21 set at the open position. (See FIG. 9). The outer surface 96a of the first plate portion 96 is visible from the opening end surface of the bolster 11 toward the outside in the vehicle width direction when the twist lock 21 rotates and moves to the open position, and the twist lock 21 rotates and moves to the tightening position. This makes it impossible to visually recognize from the opening end surface of the bolster 11 facing forward. On the outer surface 96a, characters “open” indicating that the twist lock 21 is set to the open position are displayed (see FIG. 9).

  The second plate portion 97 is bent in an L shape from the outer edge (left end edge) in the vehicle width direction of the first plate portion 96 and extends rearward with the twist lock 21 set to the tightening position (see FIG. 8). ), Extending in the vehicle width direction inner side (right side) from the rear end edge of the first plate portion 96 in a state where the twist lock 21 is set to the open position (see FIG. 9). The outer surface 97a of the second plate portion 97 is visible from the opening end surface of the bolster 11 toward the outer side in the vehicle width direction when the twist lock 21 rotates to the tightening position, and the twist lock 21 rotates to the open position. This makes it impossible to see from the opening end face of the bolster 11 facing backward. On the outer surface 97a, characters “tightening” indicating that the twist lock 21 is set to the tightening position are displayed (see FIG. 8).

  According to the present embodiment, the operator visually recognizes the display on the display plate 95 from the outside through the opening end surface of the bolster 11 to determine whether the twist lock 21 is set to the tightening position or the open position. This makes it possible to determine instantaneously and to prevent the start of traveling of the tractor 1 with the tightening released.

  The above-described embodiment is an example of the present invention, and the present invention is not limited to the above-described embodiment, and is not limited to the above-described embodiment as long as it does not depart from the technical idea according to the present invention. Of course, various modifications are possible. For example, one of the front and rear driving side tightening devices 20 may be the tightening device of the present embodiment, and the other may be another type of tightening device (for example, a type that engages in the front-rear direction). Further, the driving-side tightening device 20 may be provided instead of the driven-side tightening device 40, and the connecting shaft 50 may be omitted.

  Further, an engagement hole as an action portion may be provided in the twist lock 21, and a connection shaft as an engagement portion that engages with the engagement hole may be provided in the handle 31.

  Moreover, although the said embodiment demonstrated the trailer 2 with which the box-shaped container 7 is loaded, the fastening apparatus 20 of this invention is applicable also to the vehicle body of the truck with which the container 7 is loaded.

1: Tractor 2: Trailer 3: Chassis frame 4: Main beam 5: Cross frame 7: Container 10, 11: Bolster (support frame)
18: Opening window 20: Tightening device on the driving side 21: Twist lock 22: Lock pin (locking portion)
23: Lock rotating shaft 24: Rotating connecting member 25: Collar 26: Upper plate 27: Lower plate 28: Connecting shaft (action part)
31: Handle 32: Operation part 33: Intermediate plate part (intermediate part)
34: Slide engagement groove (engagement portion)
40: Drive side tightening device 41: Twist lock 42: Lock pin 50: Connection shaft 60: Base body 61: Reinforcement plate 62: Support base 63: Rotating shaft insertion hole 65: Coil spring (biasing means)
70: Handle support 71: Fixed plate portion 72: Handle support plate portion 73: Rotation range restricting portion 73a: Recessed portion 74: Spring connecting portion 90: Center axis of the handle rotation shaft 91: Center of the lock rotation shaft 95: Display plate (display portion) )
θ1: Twist lock rotation range θ2: Handle rotation range

Claims (3)

A fastening device for fastening a container to a support frame of a container chassis,
A lock rotation shaft that is supported rotatably with respect to the support frame and extends in the vertical direction; a locking portion that is provided at an upper end of the lock rotation shaft and rotates integrally with the lock rotation shaft; and A twisting portion that rotates within a range including a tightening position for tightening the container and an open position for releasing the tightening; Lock and
An intermediate portion that is rotatably supported with respect to the support frame around a handle rotation axis that extends in the vertical direction away from the lock rotation shaft, an operation portion on one end operated by an operator, and the twist A handle having an engaging portion on the other end side that engages with the action portion of the lock,
Center of the lock rotation axis is set between the handle rotation axis and the working portion, and a distance from the working portion that engages the engaging portion to the handle rotational axis, the working portion Is set to be longer than the distance from the center of the lock rotation shaft,
In a state where the engagement portion and the action portion are engaged, the engagement portion allows the action portion to slide in a direction toward and away from the handle rotation axis, and rotates the handle. The container is characterized in that rotational movement of the action portion around an axis is restricted, and the twist lock is rotated in conjunction with rotation of the handle by engagement between the engagement portion and the action portion. Tightening device. The tightening device according to claim 1,
When the twist lock is in a predetermined neutral position between the tightening position and the release position, the urging force is maximized, and the twist lock between the tightening position and the neutral position is moved toward the tightening position. A container tightening device comprising biasing means for biasing and biasing the twist lock between the open position and the neutral position toward the open position. The tightening device according to claim 1 or 2,
A container tightening device, comprising: a display unit that is fixed to the twist lock and that displays the twist lock in the tightening position and the release position so that the twist lock is visible from the outside.

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