JP2005097863A - Double operation type plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structurally simple, inexpensive and lightweight double operation type plate for performing the parallel movement and hinge rotation by a single actuator. <P>SOLUTION: A plate body 10 is supported by a parallel link form support mechanism 30 connected in a parallel parallelogram shape by upper and lower horizontal links 33 and 34 so that an operation side vertical link 32 movably lifts in parallel to a fixed side vertical link 31 rotatably suspended and supported by a fixed shaft 35. The support mechanism 30 is driven in two stages by the actuator 20. In driving of the first stage, the operation side vertical link 32 is movably operated in parallel to a rising position from a lowering position to the vertical link 31, while holding the fixed side vertical link 31 in an initial position. In driving of the second stage, the fixed side vertical link 31 is rotated by a hinge around the fixed shaft 35. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a multi-operation type plate that can perform a plurality of operations including parallel movement and hinge rotation, and is preferably used for a cargo compartment door or step in a transportation vehicle such as a freight car.

  As one of the opening and closing structure of the cargo compartment door in a transporting vehicle such as a freight vehicle, one capable of parallel movement and hinge rotation is required. That is, the cargo compartment door performs an opening / closing operation by hinge rotation about the lower end portion, and also functions as an elevator by moving parallel to the vertical direction while being horizontally opened outward. In other words, the cantilever raising / lowering step doubles as a hinge around the support side to serve as a door.

  The plate such as a door or a step that performs such two operations has been provided with two actuators for translation and hinge rotation.

  However, in such a conventional two-operation type plate, since two actuators are used, an increase in size and an increase in weight are inevitable, resulting in an increase in cost.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a double-action plate that is simple, inexpensive, and lightweight with a structure that enables translation and hinge rotation with a single actuator.

  In order to achieve the above object, the double action type plate of the present invention is vertically moved so that the vertical link on the operating side moves up and down in a translational manner relative to the vertical link on the fixed side supported rotatably by a fixed shaft. A parallel link type support mechanism connected in a parallelogram shape by a horizontal link, and a plate attached to the vertical link on the operating side so that it is substantially horizontal when the fixed vertical link is held in the initial position. The main body and the support mechanism are driven in two stages, and the vertical link on the operating side is moved from the lowered position to the raised position with respect to the vertical link while the fixed-side vertical link is held at the initial position by the first stage drive. An actuator that operates in a translational manner and hinges the fixed-side vertical link around the fixed axis by a second-stage drive.

  In the double action type plate of the present invention, when the actuator drives the first stage, the operation-side vertical link moves in parallel with the fixed-side vertical link from the lowered position to the raised position. Thereby, the plate main body supported by the vertical link on the operation side performs the ascending operation. When the actuator drives the second stage, the fixed-side vertical link and the operating-side vertical link rotate by a hinge around the fixed axis. Thereby, the plate main body supported by the operation-side vertical link performs hinge rotation.

  The actuator may be a pull type or a push type. In the case of the pull type, the upper part of the support mechanism may be driven, and in the case of the push type, the lower part of the support mechanism may be driven.

  The double action type plate of the present invention is formed into a parallelogram shape by the upper and lower horizontal links so that the vertical link on the operation side moves up and down in parallel translation with respect to the vertical link on the fixed side supported rotatably by the fixed shaft. The connected parallel link type support mechanism is driven in two stages by an actuator, and the fixed-side vertical link is held at the initial position by the first-stage drive, and the operating-side vertical link is lowered with respect to the vertical link. The plate body supported by the vertical link on the operating side is moved to a single position by moving in a translational manner from the position to the ascending position and by rotating the vertical link on the fixed side around the fixed axis by driving the second stage. The actuator can be translated and hinged. Thereby, for example, it can be used for a door or a step of a cargo compartment in a transportation vehicle such as a freight vehicle, so that the structure can be simplified, and the weight can be reduced and the cost can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1A to 1C are side views showing the structure and operation of an example of a multi-operation plate of the present invention.

  The double action type plate of this embodiment is used for a step of a cargo compartment in a transportation vehicle such as a freight car. As shown in FIG. 1 (a), the multi-operation type plate includes a parallel link type support mechanism 30 that horizontally supports the plate body 10 and is driven by a linear motion type (cylinder type) actuator 20. Yes.

  The support mechanism 30 includes a vertical link 31 on the fixed side located on the actuator side (on the side opposite to the plate) and a vertical link 32 on the operation side located on the plate side (on the side opposite to the actuator) by upper and lower horizontal links 33 and 34. It is the structure connected so that rotation was possible. The vertical links 31 and 32 have the same length, and overlap at the initial position shown in FIG.

  The upper and lower horizontal links 33 and 34 are shorter than the vertical links 31 and 32 and have the same length.

  In the fixed side vertical link 31, the upper node is suspended and supported by a fixed shaft 35 so as to be freely rotatable. And this vertical link 31 is surface-supported by the support body 40 in the predetermined inclination state from the actuator side in the initial position shown to Fig.1 (a). On the other hand, the operation-side vertical link 32 is held at the lowered position at the initial position shown in FIG. 1A, and supports the plate body 10 in one piece so as to be substantially horizontal in this state.

  The actuator 20 is a pulling-type cylinder, and an end portion on the support side is rotatably connected to the fixed shaft 21, and an end portion on the operation side is connected to the upper portion of the support mechanism 30 via a lever 50.

  The lever 50 has three node portions 51, 52, and 53 located on the actuator side, the intermediate portion, and the plate side, respectively. The actuator-side node 51 is a fulcrum and is rotatably supported on the fixed shaft 35. The middle node 52 is an action point and corresponds to the plate-side node of the lateral link 33. The plate-side node 53 is a force point, and is pivotally connected to the operation-side end of the actuator 20.

  That is, the lever 50 has a configuration in which an upper side link 33 is extended to the plate side to form a force point portion 53, and the force point portion 53 is rotatably connected to an end portion on the operation side of the actuator 20. Yes. The actuator 20 drives the force point portion 53 of the lever 50 so as to advance straight in two stages.

  Next, the operation of the double action type plate of this embodiment will be described.

  In the initial position shown in FIG. 1A, the pulling actuator 20 has the rod in the advanced state. The support mechanism 30 is supported by the support 40 so that the fixed-side vertical link 31 tilts toward the actuator side at a predetermined angle. The operation-side vertical link 32 is in a lowered position, and is surface-supported so as to overlap the fixed-side vertical link 31. The plate body 10 supported by the operating side vertical link 32 is horizontally held at the lowered position. The upper and lower horizontal links 33 and 34 are substantially horizontal.

  In other words, at the initial position, the vertical links 31 and 32 are inclined toward the actuator so that the horizontal links 33 and 34 are substantially horizontal with the vertical link 32 on the operation side lowered with respect to the vertical link 31 on the fixed side. doing.

  When the actuator 20 pulls from the first position, which is the initial position, to the second position, the fulcrum 51 of the lever 50 rotates around the fixed shaft 35 as shown in FIG. The action point 52 rotates around the fulcrum 51 in the first stage. As a result, the operating-side vertical link 32 rises in parallel movement from the lowered position to the raised position with respect to the fixed-side vertical link 31. As a result, the plate body 10 is raised from the lowered position to the raised position while remaining horizontal.

  In the raised position shown in FIG. 1B, the fixed-side vertical link 31 is surface-supported by the support 40 at the same position as the initial position. Although the operation-side vertical link 32 moves to the raised position, the operation-side vertical link 32 overlaps with the fixed-side vertical link 31 and is supported by the surface.

  When the actuator 20 is pulled from the second position, which is the ascending position, to the third position, the fulcrum 51 of the lever 50 further rotates around the fixed shaft 35 as shown in FIG. Then, the action point 52 rotates around the fulcrum 51 in the second stage. This is because the vertical link 32 on the operation side cannot be translated by the vertical link 31 on the fixed side serving as a stopper. As a result, the operating side vertical link 32 rotates about 90 degrees about the fixed shaft 35. As a result, the plate body 10 rotates approximately 90 degrees from the horizontal ascending position to the vertical position.

  When the actuator 20 returns from the third position to the second position, the plate body 10 returns from the vertical posture to the horizontal posture. When the actuator 20 returns from the second position to the first position, which is the initial position, the plate body 10 is lowered to the initial position while maintaining the horizontal posture.

  As described above, in the double action type plate of the present embodiment, by causing the parallel link type support mechanism 30 to perform the parallel movement operation and the rotation operation with the fixed shaft 35 as a fulcrum, the single actuator 20 The plate body 10 can be caused to perform two operations of translation and hinge rotation. The parallel movement amount of the plate body 10 is governed by the lengths of the lateral links 33 and 34, and the parallel movement amount can be adjusted by adjusting the length.

  Further, at the first stage position, the support body 40 can receive the entire load applied to the horizontal plate body 10. In the second position, a part of the load applied to the horizontal plate body 10 is applied to the actuator 20 and the rest is received by the support 40. Therefore, the load applied to the actuator 20 is reduced, and the actuator 20 can be reduced in size and weight and simplified in structure.

  The reason why the support mechanism 30 is inclined at the initial position is to avoid interference with the actuator 20, and the support mechanism 30 is supported vertically at the initial position depending on the position and structure of the actuator 20, the shape of the lever 50, and the like. It is also possible to do.

  FIGS. 2A to 2C are side views showing the structure and operation of another example of the multi-operation plate of the present invention.

  The double action type plate of this embodiment is different from the above-mentioned double action type plate in the following three points. First, the vertical links 31 and 32 are supported substantially vertically at the initial position. Second, the actuator 20 operates the lower part of the support mechanism 30 with the lever 50. Third, the actuator 20 is a push type.

  If the 2nd and 3rd difference is explained in full detail, the lever 50 has the three node parts 51,52,53 each located in the actuator side, an intermediate | middle part, and the plate side. The actuator-side node 51 is pivotally connected to the operation-side end of the actuator 20 at a power point. The middle node 52 is a fulcrum, and corresponds to the node on the actuator side of the lower horizontal link 34. The plate-side node 53 is an action point and corresponds to the frame-side node of the horizontal link 34.

  In other words, the lever 50 has a configuration in which the lower side link 34 extends to the actuator side to form a force point portion 51, and the force point portion 51 is rotatably connected to the operation side end of the actuator 20. ing. Then, the actuator 20 drives the force point 51 of the lever 50 so as to advance straight (extrusion drive) in two stages.

  The operation of the double action type plate of this embodiment will be described. At the initial position shown in FIG. 2A, the push-type actuator 20 has the rod retracted. In the support mechanism 30, the fixed-side vertical link 31 is surface-supported by the support body 40. The operation-side vertical link 32 is in a lowered position, and is surface-supported so as to overlap the fixed-side vertical link 31. The plate body 10 supported by the operating side vertical link 32 is horizontally held at the lowered position.

  When the actuator 20 is pushed from the initial position, which is the initial position, to the second position, the action point 53 of the lever 50 is centered around the fulcrum 52 as shown in FIG. Rotate. As a result, the operating-side vertical link 32 rises in parallel movement from the lowered position to the raised position with respect to the fixed-side vertical link 31. As a result, the plate body 10 is raised from the lowered position to the raised position while remaining horizontal.

  In the raised position shown in FIG. 2B, the fixed-side vertical link 31 is surface-supported by the support 40 at the same position as the initial position. Although the operation-side vertical link 32 moves to the raised position, the operation-side vertical link 32 overlaps with the fixed-side vertical link 31 and is supported by the surface.

  When the actuator 20 is pushed from the second position, which is the ascending position, to the third position, the vertical link 32 on the operating side is substantially centered about the fixed shaft 35 as shown in FIG. Rotate 90 degrees. This is because the vertical link 32 on the operation side cannot be translated by the vertical link 31 on the fixed side serving as a stopper. As a result, the plate body 10 rotates approximately 90 degrees from the horizontal ascending position to the vertical position.

  When the actuator 20 returns from the third position to the second position, the plate body 10 returns from the vertical posture to the horizontal posture. When the actuator 20 returns from the second position to the first position, which is the initial position, the plate body 10 is lowered to the initial position while maintaining the horizontal posture.

  As described above, in the double action type plate of the present embodiment, by causing the parallel link type support mechanism 30 to perform the parallel movement operation and the rotation operation with the fixed shaft 35 as a fulcrum, the single actuator 20 The plate body 10 can be caused to perform two operations of translation and hinge rotation. The parallel movement amount of the plate body 10 is governed by the lengths of the lateral links 33 and 34, and the parallel movement amount can be adjusted by adjusting the length.

  Further, at the first stage position, the support body 40 can receive the entire load applied to the horizontal plate body 10. In the second position, a part of the load applied to the horizontal plate body 10 is applied to the actuator 20 and the rest is received by the support 40. Therefore, the load applied to the actuator 20 is reduced, and the actuator 20 can be reduced in size and weight and simplified in structure.

  FIGS. 3A and 3B are side views showing the structure and operation of still another example of the double action type plate of the present invention.

  In the double action type plate of this embodiment, the lateral links 33 and 34 constituting the support mechanism 30 are of unequal length. More specifically, the upper horizontal link 33 is longer than the lower horizontal link 34. Thus, by changing the length of a part of the links 31 to 34 constituting the support mechanism 30, the angle of the plate body 10 can be changed with the parallel movement operation of the support mechanism 30. The other structure is the same as that of the double action type plate of FIG.

It is a side view which shows a structure and operation | movement about an example of the double action | operation type | mold plate of this invention. It is a side view which shows a structure and operation | movement about the other example of the double action | operation type plate of this invention. It is a side view which shows a structure and operation | movement about the further another example of the double action | operation type plate of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plate main body 20 Actuator 30 Support mechanism 31, 32 Vertical link 33, 34 Horizontal link 35 Fixed shaft 40 Support body 50 Lever 51-53 Node

Claims (5)

  A parallel link type support mechanism in which the vertical link on the operating side is lifted in a translational manner relative to the vertical link on the fixed side rotatably supported by a fixed shaft, and is connected in a parallelogram shape by upper and lower horizontal links. And the plate body attached to the operation-side vertical link so that it is substantially horizontal when the fixed-side vertical link is held at the initial position, and the support mechanism is driven in two stages. While holding the fixed side vertical link at the initial position by driving, the vertical link on the operating side is moved in parallel from the lowered position to the raised position with respect to the vertical link, and the fixed side vertical link is driven by the second stage drive. An actuator for rotating the link around the fixed axis by an actuator.   The double action type plate according to claim 1, further comprising a support body that supports the fixed side vertical link at an initial position.   The double acting plate according to claim 1, wherein the actuator is of a pulling type and drives an upper portion of the support mechanism.   The double-action plate according to claim 1, wherein the actuator is a push type and drives a lower portion of the support mechanism.   The double action type plate according to claim 1, which is a door or a step of a cargo compartment in a transporting mobile body.

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