Movable pathway

Abstract

To provide a movable passage capable of reducing an arrangement space of a rail while expanding / contracting the mobile passage smoothly.SOLUTION: When a movable passage 3 is expanded from a shortened position, the movable passage 3 is supported by a front block 22 and a rear block 33 at two points which are longitudinally separated from each other. Accordingly, the movable passage 3 can be prevented from being a cantilevered state so that the movable passage 3 can be smoothly expanded / contracted in the vicinity of the shortened position. Since a front rail 31 is mounted on the movable passage 3 (i.e., the front block 22 is mounted on a fixed passage 2) and the front rail 31 slides along the front block 22, the front rail 31 is not necessary to be protruded forward from the movable passage 3 in a shortened state. Therefore, an arrangement space of the front rail 31 can be reduced.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a movable passage, and more particularly to a movable passage that can reduce the arrangement space of rails while smoothly expanding and contracting the movable passage.

Background Art

[0002] A movable passage including a fixed passage fixed to a station platform and a movable passage that expands and contracts with respect to the fixed passage is known. This type of movable passage allows passengers to board and alight between the platform and the vehicle by extending the movable passage toward the boarding and alighting openings of the vehicle stopping at the platform.

[0003] For example, Patent Document 1 describes a technique in which a rail (guide rod 64) is fixed to a fixed passage (door-shaped wall material 56), and a block (guide 65) slidable on the rail is fixed to a movable passage (wall plate portion 63). According to this technique, the expansion and contraction of the movable passage can be guided by the sliding of the block with respect to the rail.

Prior Art Documents

[0006] To avoid this cantilevered state and ensure smooth extension and retraction of the movable passage, one could, for example, attach blocks to both the rear and front ends of the movable passage, thereby separating the support points of the movable passage by the blocks. However, in such a configuration, in order to slide the block attached to the front end of the movable passage forward, it is necessary to extend the rail further forward than the shortened movable passage, increasing the space required for the rail. In other words, the conventional technology described above had the problem of not being able to achieve both smooth extension and retraction of the movable passage and a reduction in the space required for the rail.

[0007] This invention was made to solve the above-mentioned problems and aims to provide a movable passage that can smoothly extend and retract while reducing the space required for rail placement. [Means for solving the problem]

[0008] To achieve this objective, the movable passage of the present invention comprises a fixed passage fixed to the station platform, a movable passage that extends and retracts relative to the fixed passage, and the movable passage Guides the expansion and contraction of It comprises rails and blocks, The sliding of the rail and the block, Between the extended position extending from the fixed passage toward the vehicle stopping at the platform and the shortened position shortening toward the fixed passage of The movable passage but stretchable vinegar It comprises a rear rail attached to the fixed passage, a rear block slidably engaged with the rear rail and attached to the rear end of the movable passage, a front block attached to the fixed passage forward of the rear rail, and a front rail slidably engaged with the front block and attached to the front end of the movable passage. The front block engages with the front end of the front rail in the shortened position, and the fixed passage includes a support member that supports the front block, and the support member can form a supported state in which it restricts the downward displacement of the front block and supports the movable passage, and an unsupported state in which it allows the upward displacement of the front block from the supported state and releases support for the movable passage. ru. [Effects of the Invention]

[0009] The movable passage described in claim 1 comprises a rear rail attached to a fixed passage and a rear block slidably engaged with the rear rail and attached to the rear end of the movable passage, so the rear end of the movable passage is slidably supported by the rear rail and the rear block. Furthermore, it comprises a front block attached to the fixed passage forward of the rear rail and a front rail slidably engaged with the front block and attached to the front end of the movable passage, so the front end of the movable passage is slidably supported by the front rail and the front block.

[0010] Since the rear block is attached to the rear end of the movable passage and the front block engages with the front end of the front rail in the shortened position, the support positions of the movable passage by the rear block and the front block in the shortened position can be separated fore and aft. This prevents the movable passage from becoming cantilevered when it extends or retracts near the shortened position, resulting in smoother extension and retraction of the movable passage.

[0011] Furthermore, since the front block is attached to the fixed passage and the front rail is attached to the movable passage, when the movable passage is extended, the front rail slides forward along the front block. Therefore, unlike configurations where, for example, the front block is attached to the movable passage (and the front rail is attached to the fixed passage), there is no need to make the front rail protrude further forward than the shortened movable passage. Thus, this has the effect of reducing the space required for the front rail. Furthermore, the support member supporting the front block can form a supported state in which the downward displacement of the front block is restricted and the movable passage is supported, and an unsupported state in which the upward displacement of the front block is permitted from the supported state and the support of the movable passage is released. As a result, if rattle occurs that causes the movable passage to be displaced up or down, the support of the movable passage by the front block can be released, which has the effect of reducing the load applied to the engagement portion of the front rail and the front block.

[0012] The movable passage described in claim 2 provides the following effects in addition to those of the movable passage described in claim 1: Since the movable passage is equipped with wheels that support it in its extended position, the movable passage can be supported by the wheels when it approaches a cantilevered state. This reduces the load applied to the engagement parts of each rail and block, resulting in smoother extension and retraction of the movable passage.

[0013] The movable passage described in claim 3 provides the following effects in addition to those of the movable passage described in claim 2: Since the support of the movable passage by the wheels begins during the displacement of the movable passage from the shortened position to the extended position, the movable passage can be extended and retracted without being supported by the wheels near the shortened position. This reduces the number of support points for the movable passage near the shortened position, resulting in smoother extension and retraction of the movable passage.

[0014]

[0015] Claim 4 According to the movable passage described, 1 In addition to the effects of the movable passage described above, the following effects are also achieved. The support member comprises an axis fixed to the fixed passage and a fixed member having an elongated hole that slides up and down along the axis. Since the front block is fixed to this fixed member, the fixed member is suspended from the axis inserted into the elongated hole (restricting the downward displacement of the front block), thereby forming a supported state in which the front block supports the movable passage. On the other hand, by displacing the fixed member upward along the axis from this supported state (allowing the upward displacement of the front block), an unsupported state is formed in which the support of the movable passage by the front block is released.

[0016] Since the shaft, which extends in the left-right direction perpendicular to the extension and retraction direction of the movable passage, is inserted into the oval-shaped slot of the fixed member, the fixed member can be rotated around the shaft when a load is applied to it in the front-to-back direction. Therefore, this has the effect of reducing the load applied to the fitting portion between the shaft and the slot of the fixed member.

[0017] Claim 5 The movable passage described herein provides the following effects in addition to those of the movable passage described in claim 1: Since the rear rail is fixed to the side wall of the fixed passage above the vertical center of the movable passage, even if the rear rail is exposed to the passenger passage (side wall) due to the extension of the movable passage, it is possible to prevent passengers from touching the rear rail. [Brief explanation of the drawing]

[0018] [Figure 1] Perspective view of a movable passage in one embodiment of the present invention. [Figure 2] Cross-sectional view of the movable passage showing the state where the movable passage is shortened to the shortened position. [Figure 3] Cross-sectional view of the movable passage showing the state where the movable passage has extended by a predetermined amount from the state of FIG. 2 (shortened position). [Figure 4] (a) is a partial enlarged cross-sectional view of the movable passage obtained by enlarging the IVa portion of FIG. 3, and (b) is a partial enlarged cross-sectional view of the movable passage showing the state where the movable passage has been lifted from the state of FIG. 4(a). [Figure 5] Cross-sectional view of the movable passage showing the state where the movable passage has extended from the state of FIG. 3 to the extended position.

Embodiments for Carrying Out the Invention

[0019] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, referring to FIG. 1, the overall configuration of the movable passage 1 will be described. FIG. 1 is a perspective view of the movable passage 1 in one embodiment of the present invention. In FIG. 1, the state where the movable passage 3 is shortened toward the fixed passage 2 side is illustrated, and a part of the movable passage 1 (for example, a ceiling connecting the upper ends of the side walls 23) is omitted and schematically illustrated.

[0020] [[ID=?]]

[0021] It seems there is an incorrect tag [[ID=?]] in the original text. Please check and correct it if possible.As shown in Figure 1, the movable passageway 1 is a movable passageway comprising a fixed passageway 2 fixed to the station platform 100 and a movable passageway 3 that extends and retracts relative to the fixed passageway 2. By extending the movable passageway 3 toward the entrance / exit of a parked train (not shown), the entrance / exit and the platform 100 are connected by the fixed passageway 2 and the movable passageway 3, enabling passengers to board and alight.

[0022] A partition wall 20 is formed in the fixed passageway 2, extending in the left-right direction (arrows LR direction), and this partition wall 20 separates the platform 100 side from the train car side. A rectangular opening 20a is formed in the partition wall 20, and the movable passageway 3 expands and contracts in the front-rear direction (arrows FB direction) within this opening 20a.

[0023] The movable passage 3 includes a rectangular cylindrical section 30 that is inserted into the opening 20a, and a front rail 31 extending in the front-rear direction is fixed to the upper end of the side surface of the cylindrical section 30. The front rail 31 is fixed to both the left and right sides of the cylindrical section 30, and protrusions 21 are provided in the fixed passage 2 to guide the sliding of this pair of left and right front rails 31.

[0024] The protruding portions 21 project forward from the front surface of the partition wall 20, and a pair of protruding portions 21 are provided on the upper part of the opening 20a, spaced at a predetermined interval on the left and right. A front block 22 is suspended from each of the left and right pairs of protruding portions 21 via a fixing member 41 (see the enlarged portion in the lower right of Figure 1), which will be described later, and the front rail 31 of the movable passage 3 engages with this front block 22.

[0025] An overhanging portion 32 protrudes from the rear end of the cylindrical portion 30 in a flange-like manner, and a side wall 23 extends from the rear surface of the partition wall 20 toward the rear to guide the sliding of this overhanging portion 32. The side walls 23 are provided in pairs on the left and right sides, flanking the opening 20a (and the overhanging portion 32), and a rear rail 24 extending in the front-rear direction is fixed to the inner surface (the wall surface facing the movable passage 3) of each of these pair of side walls 23. Rear blocks 33 (see the enlarged upper left portion of Figure 1) are fixed to the left and right end faces of the overhanging portion 32, and these rear blocks 33 engage with the rear rail 24 of the fixed passage 2.

[0026] Each of these rails 24, 31 and blocks 22, 33 (hereinafter referred to as "each rail and block") is an LM guide (registered trademark) in which the block moves linearly along the rail due to the rolling of rolling elements interposed between the rail and the block. Therefore, the extension and retraction of the movable passage 3 is guided by the sliding of each rail and block when the driving force of a driving means (such as a cylinder that extends and retracts back and forth) is applied to the movable passage 3.

[0027] Next, with reference to Figures 2-5, the detailed configuration and extension / retraction operation of the movable passage 1 will be described. First, with reference to Figures 2 and 3, the operation of the movable passage 3 extending from a shortened position toward the fixed passage 2 (hereinafter referred to as the "shortened position") will be described. Figure 2 is a cross-sectional view of the movable passage 1 showing the movable passage 3 in the shortened position, and Figure 3 is a cross-sectional view of the movable passage 1 showing the movable passage 3 extended by a predetermined amount from the state in Figure 2 (shortened position).

[0028] In Figures 2 and 3, the cross-section is shown as it is cut by a plane perpendicular to the left-right direction (arrows LR) of Figure 1, and includes the fixing member 41. The rear rail 24 and rear block 33, which are hidden by the movable passage 3, are shown with dashed lines (the same applies to Figures 4 and onward). In Figure 3, the state of the movable passage 3 during its extension before it reaches the end of its extension movement (hereinafter referred to as the "extended position").

[0029] As shown in Figure 2, the rear rail 24 and the front rail 31 are positioned vertically separated, and in the shortened position, the front end of the rear rail 24 is located further forward than the rear end of the front rail 31. That is, in the shortened position, in a side view, a portion of the front end of the rear rail 24 and a portion of the rear end of the front rail 31 are positioned vertically aligned (overlapping). This reduces the space required for the rear rail 24 and the front rail 31 in the longitudinal direction.

[0030] Furthermore, the front rail 31 extends from the front end of the movable passage 3 (cylindrical section 30) toward the rear, and in the shortened position, the front block 22 engages with the front end portion of the front rail 31. That is, in the shortened position, the front end of the movable passage 3 is supported by the front block 22.

[0031] On the other hand, the rear block 33, which engages with the rear rail 24, is attached to the rear end portion (overhang 32) of the movable passage 3. Therefore, in the shortened position, the rear end of the movable passage 3 is supported by the rear block 33.

[0032] In other words, in the shortened position, the support position of the movable passage 3 by the front block 22 is located forward of the center of the movable passage 3 in the front-rear direction, and the support position of the movable passage 3 by the rear block 33 is located rearward of the center of the movable passage 3 in the front-rear direction.

[0033] Therefore, as shown in Figure 3, when the movable passage 3 extends from the shortened position, the front block 22 and the rear block 33 can support the movable passage 3 at two points separated front to back. This prevents the movable passage 3 from becoming cantilevered, allowing for smooth extension and retraction of the movable passage 3 near the shortened position.

[0034] In particular, when extending the movable passage 3 from the shortened position, it is necessary to slide the movable passage 3 against the static frictional force of the engaging parts of each rail and block. Therefore, by supporting the movable passage 3 at two points that are as far apart as possible in the shortened position, the sliding of the movable passage 3 from the shortened position to the extended position can be made smoother.

[0035] Here, for example, if the front block 22 is attached to the movable passage 3 side while the front rail 31 is attached to the fixed passage 2 side, and the front block 22 is slid along the front rail 31, then in order to slide the front block 22 forward, the front rail 31 needs to protrude further forward than the movable passage 3 in its shortened position (the state shown in Figure 2). Therefore, the space required for the front rail 31 increases.

[0036] In contrast, in this embodiment, the front rail 31, which is attached to the movable passage 3, is slid forward relative to the front block 22, which is attached to the fixed passage 2. Therefore, unlike the configuration described above where the front block 22 is attached to the movable passage 3 (and the front rail 31 is attached to the fixed passage 2), it is not necessary to make the front rail 31 protrude forward beyond the movable passage 3 in its shortened position (the state shown in Figure 2). Thus, the space required for the front rail 31 can be reduced.

[0037] Furthermore, in the shortened position, the rear block 33 of the movable passage 3 engages with the rear end of the rear rail 24, so the rear rail 24 does not need to protrude further rearward than the movable passage 3 in the shortened position (the state shown in Figure 2). Therefore, the space required for the rear rail 24 can be reduced.

[0038] As shown in Figures 2 and 3, when the movable passage 3 extends from its shortened position, the rear block 33 fixed to the movable passage 3 slides along the rear rail 24, so the support position of the movable passage 3 by the rear block 33 remains unchanged at the rear end of the movable passage 3. On the other hand, the front rail 31 fixed to the front end of the movable passage 3 slides along the front block 22, so the support position of the movable passage 3 by the front block 22 moves towards the rear end of the movable passage 3 as the amount of extension of the movable passage 3 increases.

[0039] In other words, as the extension of the movable passage 3 increases, the support position of the movable passage 3 by the front block 22 gradually moves closer to the rear block 33, and the movable passage 3 approaches a cantilevered state. In response to this, the movable passage 1 of this embodiment is equipped with wheels 34 to support the movable passage 3 as it approaches a cantilevered state.

[0040] The wheels 34 are wheels that rotate around an axis along the left-right direction (arrows LR direction), and multiple wheels 34 (3 in this embodiment) arranged in the front-rear direction are attached to the lower end of the movable passage 3. Although not shown in the illustration, if these multiple wheels 34 are considered as one set, then a total of two sets of wheels 34 are attached to both the left and right ends of the movable passage 3.

[0041] In the shortened position, the wheels 34 are lifted off the floor 25 of the fixed passage 2 (see Figure 2), while a support base 26 for supporting the wheels 34 is provided in front of the floor 25. The support base 26 is located in front of the wheel 34 located at the foremost end of the movable passage 3 in the shortened state (state shown in Figure 2), and is positioned in front of the front end of the movable passage 3 in the shortened state. The upper surface of the support base 26 is higher than the floor 25 of the fixed passage 2. Furthermore, the upper surface of the support base 26 is a horizontal plane parallel to the plane containing the axes of each of the left and right rear rails 24 (front rail 31). Therefore, when the movable passage 3 is extended by a predetermined amount from the shortened position, the wheels 34 are configured to roll on the upper surface of the support base 26 (see Figure 3).

[0042] As a result, when the movable passage 3 extends a predetermined amount from its shortened position and approaches a cantilevered state, the movable passage 3 can be supported by the wheels 34 rolling on the support base 26. In other words, the forward tilting of the movable passage 3 due to its own weight when it approaches a cantilevered state can be suppressed, thereby reducing the load applied to the engagement parts of each rail and block. Therefore, the increase in sliding resistance (hereinafter referred to as "sliding resistance") of each rail and block can be suppressed, allowing the extension and retraction of the movable passage 3 to be smooth.

[0043] Furthermore, as described above, the upper surface of the support base 26 (the support surface that supports the wheels 34) is parallel to the planes that run along each of the left and right rear rails 24. Therefore, when the wheels 34 roll on the support base 26, the movable passage 3 can be supported to the extent that no sliding resistance is generated in the rear rails 24 and the rear block 33.

[0044] Thus, although the increase in sliding resistance of each rail and block caused by the movable passage 3 approaching a cantilevered state can be suppressed by the wheels 34, the above-mentioned sliding resistance may also increase due to looseness caused by dimensional errors in each component of the movable passage 1 or assembly errors in the movable passage 3. Furthermore, this looseness due to assembly errors may also increase the rolling resistance of the wheels 34 on the support base 26, and these increases in resistance at the support points of the movable passage 3 all hinder the smooth extension and retraction of the movable passage 3. In other words, the more support points there are in the movable passage 3, the more difficult it becomes for the movable passage 3 to extend and retract smoothly when the above-mentioned increases in resistance accumulate.

[0045] In contrast, in this embodiment, the support of the movable passage 3 by the wheels 34 begins during the displacement of the movable passage 3 from the shortened position to the extended position. This allows the movable passage 3 to be extended and retracted without being supported by the wheels 34 near the shortened position. In other words, compared to the case where the movable passage 3 is supported at three points by each rail and block and the wheels 34, the number of support points of the movable passage 3 near the shortened position can be reduced. By reducing the number of support points of the movable passage 3, the accumulation of the above-mentioned increase in resistance can be suppressed, so the extension and retraction of the movable passage 3 can be made smoother.

[0046] Furthermore, the wheel 34 begins supporting the movable passage 3 from a position behind the front block 22 and in front of the rear block 33. As a result, when the wheel 34 begins supporting the movable passage 3, the front block 22, the rear block 33, and the wheel 34 can support the movable passage 3 at three points separated in the front-rear direction. Therefore, the movable passage 3 can be smoothly extended when the wheel 34 begins supporting it.

[0047] In this embodiment, although the wheels 34 are configured to contact the upper surface of the support base 26 (zero-touch) when the movable passage 3 is extended by a predetermined amount from the shortened position, if there is looseness due to assembly errors or the like, the wheels 34 may roll over the support base 26. When the movable passage 3 is lifted upward by this wheel 34 rolling over, a load is easily generated on the engagement portion of the front block 22 and the front rail 31. This is because the wheels 34 begin supporting the movable passage 3 at a position biased towards the front block 22 (closer to the front block 22) than the rear block 33.

[0048] In contrast, in this embodiment, the front block 22 is configured to release its support of the movable passage 3 when the wheel 34 rides over it as described above. This configuration will be explained with reference to Figure 4.

[0049] Figure 4(a) is a partially enlarged cross-sectional view of the movable passage 1, showing the IVa portion of Figure 3, and Figure 4(b) is a partially enlarged cross-sectional view of the movable passage 1 showing the state in which the movable passage 3 has been raised from the state in Figure 4(a).

[0050] As shown in Figure 4(a), the movable passage 1 is provided with a support member 4 that supports the front block 22 in a suspended state. The support member 4 comprises a bracket 40 fixed to the lower surface of the protrusion 21 of the fixed passage 2, and a substantially rectangular parallelepiped fixing member 41 inserted into the cavity 40a inside the bracket 40.

[0051] An axis 40c is fixed to the inner surface 40b of the cavity 40a of the bracket 40, which faces left-right (arrows LR direction). The axis 40c is formed in a cylindrical shape extending in the left-right direction, and an elongated hole 41a for inserting this axis 40c is formed in the fixing member 41.

[0052] The elongated hole 41a of the fixing member 41 is an oval-shaped hole that extends vertically. The width dimension of the elongated hole 41a (dimension in the direction of arrow FB) is formed to be the same as or slightly larger than the outer diameter of the shaft 40c, while the longitudinal dimension of the elongated hole 41a (dimension in the direction of arrow UD) is formed to be larger than the outer diameter of the shaft 40c. Therefore, the fixing member 41 is configured to be able to displace vertically within the cavity 40a of the bracket 40 by sliding the elongated hole 41a along the shaft 40c.

[0053] Furthermore, the fixing member 41 is sandwiched between the inner surface 40b of the cavity 40a and the inner surface of the cavity 40a that faces the inner surface 40b in the left-right direction (arrows LR direction) (an inner surface not shown, located on the near side in the vertical direction of the paper in Figure 4). Therefore, the fixing member 41 cannot be displaced in the axial direction (arrows LR direction) of the shaft 40c.

[0054] Since the front block 22 is fixed to this fixing member 41, the fixing member 41 is suspended from the shaft 40c inserted into the elongated hole 41a (restricting the downward displacement of the front block 22), thereby creating a supported state in which the front block 22 supports the movable passage 3. On the other hand, when the fixing member 41 is displaced upward along the shaft 40c from that supported state (allowing the upward displacement of the front block 22), an unsupported state is created in which the support of the movable passage 3 by the front block 22 is released.

[0055] Therefore, if, for example, the wheel 34 rides up onto the upper surface of the support base 26 due to looseness such as the assembly error mentioned above, and the movable passage 3 is lifted upward, the support of the movable passage 3 by the front block 22 is released, and the movable passage 3 can be supported only by the rear block 33 and the wheel 34 (see Figure 3 for both). This reduces the load applied to the engagement portion of the front block 22 and the front rail 31 when the wheel 34 rides up onto the support base 26, allowing the movable passage 3 to extend and retract smoothly.

[0056] Furthermore, since the cylindrical shaft 40c extending in the left-right direction (horizontal direction perpendicular to the extension and retraction direction of the movable passage 3) is inserted into the oval-shaped elongated hole 41a of the fixing member 41, rotation of the fixing member 41 around the shaft 40c is permitted. In order to allow this rotation of the fixing member 41, a gap is formed between the inner surfaces 40d and 40e of the bracket 40 (both front and rear surfaces within the cavity 40a) and the fixing member 41. This allows the fixing member 41 to rotate around the shaft 40c when a load in the front-rear direction acts on the fixing member 41. Thus, the load applied to the fitting portion between the shaft 40c and the elongated hole 41a of the fixing member 41 can be reduced.

[0057] Thus, the fixing member 41 to which the front block 22 is fixed can be displaced vertically along the axis 40c and rotated around the axis 40c. Therefore, compared to, for example, the case where the front block 22 (fixing member 41) is rigidly connected to the fixed passage 2, the load applied to the mounting portion of the front block 22 (fixing member 41) can be reduced, and the extension and retraction of the movable passage 3 can be made smoother.

[0058] Next, with reference to Figure 5, the state in which the movable passage 3 is extended to its extended position will be described. Figure 5 is a cross-sectional view of the movable passage 1 showing the state in which the movable passage 3 is extended to its extended position from the state in Figure 3.

[0059] As shown in Figure 5, when the movable passage 3 is extended to its extended position, the front block 22 of the fixed passage 2 engages with the front rail 31 at approximately the center of the movable passage 3 in the front-rear direction, so the movable passage 3 becomes nearly cantilevered. However, even in the extended position, the movable passage 3 is supported by the support base 26 via the wheels 34, so the forward tilt of the movable passage 3 can be supported by the wheels 34. Therefore, the load applied to the engagement parts of each rail and block can be reduced, allowing the movable passage 3 to slide smoothly near the extended position.

[0060] In the extended position, of the multiple wheels 34 arranged front to back, the wheel 34 at the very front is displaced forward of the front block 22 and the support base 26. That is, the configuration is such that the wheel 34 at the very front protrudes forward from the support base 26, but for example, the support base 26 may be extended forward and the movable passage 3 may be supported by the wheel 34 at the very front. In this configuration, the movable passage 3 in the extended state can be supported by the wheel 34 located forward of the front block 22, so the forward tilt of the movable passage 3, which approaches a cantilevered state, can be effectively supported by the wheel 34.

[0061] Passengers board and alight between platform 100 and the train car (not shown) when the movable passageway 3 is extended to its extended position (the state shown in Figure 5), but the rear rail 24 is exposed on the side wall 23 which forms the wall surface of the passenger passageway. In contrast, in this embodiment, the rear rail 24 is positioned above the vertical center of the movable passageway 3. This prevents passengers from touching the rear rail 24 even when the rear rail 24 is exposed in the passenger passageway when the movable passageway 3 is extended.

[0062] When the movable passage 3 shortens from the extended position (the state shown in Figure 5) towards the fixed passage 2, the movement is the reverse of the extension movement of the movable passage 3 described above. Therefore, even when shortening from the extended position, the movable passage 3 is supported by the wheels 34 rolling on the support base 26, allowing the movable passage 3 to be shortened smoothly.

[0063] Furthermore, since the support of the movable passage 3 by the wheels 34 is released during the displacement of the movable passage 3 from the extended position to the shortened position, the number of support points for the movable passage 3 near the shortened position can be reduced. Therefore, the movable passage 3 can be shortened smoothly.

[0064] Although the present invention has been described above based on embodiments, it can be easily inferred that the present invention is not limited in any way to the above embodiments, and that various improvements and modifications are possible without departing from the spirit of the present invention.

[0065] In the above embodiment, a case in which an overhang 32 is formed at the rear end of the movable passage 3 (cylindrical portion 30) has been described, but the invention is not necessarily limited to this. For example, the overhang 32 may be omitted, and the rear block 33 may be fixed to the side surface of the cylindrical portion 30. In this configuration, the pair of side walls 23 should be brought closer to the movable passage 3 side until the rear rail 24 engages with the rear block 33.

[0066] In the case where the protruding portion 32 is omitted (the rear block 33 is fixed to the side surface of the cylindrical portion 30), the rear rail 24 will be arranged on the same plane as the front rail 31. Therefore, it is preferable to separate the rear rail 24 and the front rail 31 vertically, as in the above embodiment. This suppresses interference between the rear rail 24 and the front rail 31, while allowing a portion of the front end of the rear rail 24 and a portion of the rear end of the front rail 31 to be aligned vertically (overlapping) in a side view. Thus, even when the rear rail 24 and the front rail 31 are arranged on the same plane, the space required for each of the rails 24 and 31 in the front-rear direction can be reduced.

[0067] In the above embodiment, the support of the movable passage 3 by the wheels 34 is described as starting midway through the displacement of the movable passage 3 from the shortened position to the extended position, but it is not necessarily limited to this. For example, the movable passage 3 may be supported by the wheels 34 from the shortened position to the extended position (throughout the entire displacement range of the movable passage 3). In such a configuration as well, it is preferable to allow the front block 22 to be displaced upward, as in the above embodiment. This allows the support of the movable passage 3 by the front block 22 to be released if rattling occurs that causes the movable passage 3 to be displaced vertically when the wheels 34 roll, thereby reducing the load applied to the engagement portion of the front block 22 and the front rail 31.

[0068] Although it is possible to omit the wheels 34, it is preferable to provide the wheels 34 as in the above embodiment in order to effectively assist in the changes in load associated with the extension of the movable passage 3.

[0069] Furthermore, although not explained in the above embodiment, the "partial displacement" of the movable passage 3 refers to a position that is extended by at least 1 / 5 of the total length from the shortened position to the extended position, and a position that is shortened by at least 1 / 5 of the total length from the extended position, when the total length of the displacement region of the movable passage 3 is defined as the length from the shortened position to the extended position.

[0070] In the above embodiment, a case was described in which the movable passage 3, which approaches a cantilever state when extended, is supported by the wheels 34, but the invention is not necessarily limited to this. For example, a support base that can be raised and lowered (for example, one that moves up and down by a cylinder, etc.) may be provided on the lower side of the movable passage 3 in the extended position, and the support base may be raised to support the movable passage 3 when the movable passage 3 reaches the extended position.

[0071] Even in this configuration, it is preferable to allow upward displacement of the front block 22, as in the embodiment described above. This allows the support of the movable passage 3 by the front block 22 to be released when the movable passage 3 is lifted by the support base (i.e., rattling occurs that causes the movable passage 3 to be displaced vertically), thereby reducing the load applied to the engagement portion of the front block 22 and the front rail 31.

[0072] In the above embodiment, configurations in which the fixing member 41 (front block 22) is displaced vertically along the axis 40c, or configurations in which the fixing member 41 (front block 22) rotates around the axis 40c, have been described, but the invention is not necessarily limited to these. For example, the fixing member 41 may be rigidly connected to the fixing passage 2 (the front block 22 may be fixed to the fixing passage 2 in a way that prevents displacement).

[0073] Furthermore, although the above embodiment describes a case in which the fixing member 41 is displaced vertically by sliding the elongated hole 41a along the shaft 40c, the invention is not necessarily limited to this. For example, the shaft extending vertically is fixed to the lower surface of the fixing passage 2 (projection 21), while a through hole (extending vertically) into which the shaft can be inserted is formed in the fixing member 41, thereby allowing the fixing member 41 (front block 22) to be displaced only in the vertical direction along the shaft (the fixing member 41 cannot rotate). In this configuration, by providing a stopper to restrict the downward displacement of the fixing member 41 (for example, by providing a part at the lower end of the shaft into which the fixing member 41 is hooked), a supported state in which the fixing member 41 is hooked onto the stopper and supports the movable passage 3, and an unsupported state in which the fixing member 41 rises from the stopper and releases support for the movable passage 3 can be formed.

[0074] Alternatively, instead of moving the fixing member 41 up and down along the axis, the fixing member 41 (front block 22) may be moved up and down using rails and blocks such as the LM guide (registered trademark) mentioned above. Even when using such rails and blocks, the supported state and unsupported state of the movable passage 3 can be formed by providing a stopper that restricts the downward displacement of the fixing member 41 (front block 22).

[0075] In other words, the configuration is not limited to the above-described form, as long as it can form a supported state in which the downward displacement of the front block 22 is restricted and the movable passage 3 is supported, and an unsupported state in which the upward displacement of the front block 22 from the supported state is permitted and the support of the movable passage 3 is released.

[0076] In the above embodiment, the front block 22 and front rail 31 are described as a pair of front guide rails, and a pair of front guide rails are provided on both the left and right sides of the movable passage 3. However, the embodiment is not necessarily limited to this. For example, one or more pairs of front guide rails may be provided on the upper surface of the movable passage 3, or three or more pairs of front guide rails may be provided on the upper surface or both the left and right sides of the movable passage 3. Similarly, when the rear rail 24 and rear block 33 are a pair of rear guide rails, one or more pairs of rear guide rails may be provided on the upper surface of the movable passage 3, or three or more pairs of rear guide rails may be provided on the upper surface or both the left and right sides of the movable passage 3.

[0077] In the above embodiment, the case in which each rail and block is positioned above the vertical center of the movable passage 3 was described, but this is not necessarily the only case. For example, each rail and block may be positioned below the vertical center of the movable passage 3. [Explanation of symbols]

[0078] 1 Movable aisle 2 Fixed passage 22 Front block (block) 23 Side wall 24 Rear rail (rail) 3 Movable passage 31 Front rail (rail) 33 Rear block (block) 34 wheels 4. Support members 40c axis 41 Fixing member 41a long hole 100 Home

Claims

1. A movable passageway comprising a fixed passageway fixed to the station platform, a movable passageway that extends and retracts relative to the fixed passageway, and rails and blocks that guide the extension and retraction of the movable passageway, wherein the movable passageway extends and retracts between an extended position, which extends from the fixed passageway toward the vehicle stopping at the platform, and a shortened position, which shortens toward the fixed passageway, by sliding the rails and blocks, The system comprises a rear rail attached to the fixed passage, a rear block slidably engaged with the rear rail and attached to the rear end of the movable passage, a front block attached to the fixed passage forward of the rear rail, and a front rail slidably engaged with the front block and attached to the front end of the movable passage. The front block engages with the front end side of the front rail in the shortened position. The fixed passage includes a support member that supports the front block, The movable passage is characterized in that the support member can form a supported state in which the front block is restricted from being displaced downward and the movable passage is supported, and an unsupported state in which the front block is allowed to be displaced upward from the supported state and the support for the movable passage is released.

2. The movable passage according to claim 1, characterized in that it is provided with wheels that support the movable passage in the extended position.

3. The movable passage according to claim 2, characterized in that the support of the movable passage by the wheels is started during the displacement of the movable passage from the shortened position to the extended position.

4. The support member is fixed to the fixed passage and comprises a cylindrical shaft extending in a left-right direction perpendicular to the extension and retraction direction of the movable passage, and a fixed member having an oval-shaped elongated hole that slides up and down along the shaft. The movable passage according to claim 1, characterized in that the front block is fixed to the fixing member.

5. The movable passage according to claim 1, characterized in that the rear rail is fixed to the side wall of the fixed passage above the vertical center of the movable passage.

Images