Window lifting device

Abstract

To provide a window lifting device capable of holding a movable window at an arbitrary place while energizing the movable window upward.SOLUTION: A movable window 4 used for a railway vehicle is provided to be raised and lowered. The movable window 4 is energized upward by an energization member 15. A spring material 30 in which an opening part 34 is formed in a moving direction of the movable window 4 is provided on a railway vehicle. A sliding wheel 35 is provided to be rotatable with respect to the movable window 4 in the opening part 34 of the spring material 30. The sliding wheel 35 is held by the spring material 30 and abutment parts 30d, 30d abutting on the spring material 30 are energized in a shaft core direction of the sliding wheel 35 so as to suppress the rotation of the sliding wheel 35.SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present invention relates to a window lifting device. [Background technology]

[0002] Windows in the side walls of passenger compartments of railway vehicles are fixed and cannot be opened or closed. However, in recent years, from the perspective of ventilation within the passenger compartment, there has been a demand for windows in the side walls of the passenger compartment that can be opened or closed.

[0003] Conventionally, a movable window is provided so as to be able to be opened and closed in the vertical direction in relation to a fixed window provided on a side wall of a passenger compartment. To enable the movable window to be closed with a light force, the movable window is biased upward by a coil spring. Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the movable window is biased upward by a coil spring, there is a problem in that when the movable window is opened, it is difficult to stop the movable window in a desired position, such as leaving it open only slightly for ventilation.

[0005] It is therefore an object of the present invention to provide a window lifting device that can stop a movable window at any desired location. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a movable window for use in a railway vehicle that can be raised and lowered, The movable window is biased upward by a biasing member; a spring material having an opening formed in a moving direction of the movable window is provided on the railway vehicle, and a sliding wheel is provided at the opening of the spring material so as to be rotatable with respect to the movable window; The sliding ring is clamped by the spring material, and the contact portion with the spring material is biased in the axial direction of the sliding ring, thereby suppressing rotation of the sliding ring.

[0007] In addition, the sliding rings of the spring material abut against each other at one abutment portion and the other abutment portion, The force that urges one of the contact portions toward the axial direction of the sliding wheel may be different from the force that urges the other of the contact portions toward the axial direction of the sliding wheel. Effect of the Invention

[0008] According to the present invention, a spring material having an opening formed in a moving direction of the movable window is provided on a railway vehicle, and a sliding wheel is provided at the opening of the spring material so as to be rotatable with respect to the movable window; The sliding ring is clamped by the spring material and the contact portion with the spring material is biased in the axial direction of the sliding ring to suppress rotation of the sliding ring. Therefore, the movable window can be held in any position even when the movable window is biased upward by the biasing member. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a view of the window lifting device according to the first embodiment of the present invention, viewed from the indoor side with the movable window closed. [Diagram 2] Cross-sectional view taken along line AA in Figure 1. [Diagram 3] 3 is a cross-sectional view of the movable window in the lowered state from the state shown in FIG. 2. [Figure 4] FIG. 13 is a diagram showing a state in which the rod of the urging member used in the embodiment of the present invention is extended. [Diagram 5] A diagram of the rod being extended or contracted from the position shown in Figure 4. [Figure 6] FIG. 11 is a diagram showing another example of the urging member used in the first embodiment of the present invention, with the rod in an extended state. [Figure 7] A diagram showing the state in which the rod has been extended or contracted from the state shown in Figure 6. [Figure 8] FIG. 2 is a side view showing the relationship between the movable window and the railcar when the movable window is closed. [Figure 9] 9 is a side view showing the relationship between the movable window and the fixed window in a state where the movable window has been lowered from the state shown in FIG. 8. [Figure 10]FIG. 4 is a side view showing the relationship between the movable window and the fixed window when the movable window is fully open. [Figure 11] 11 is a side view showing the relationship between the movable window and the fixed window in a state in which the movable window is raised from the state shown in FIG. 10 . [Figure 12] FIG. 2 is a diagram showing an example of an operation of the window lifting device according to the first embodiment of the present invention. [Figure 13] FIG. 11 is a diagram showing another example of an operation example of the window lifting device according to the first embodiment of the present invention. [Figure 14] FIG. 2 is a top view of a movable window used in the first embodiment of the present invention. [Figure 15] Front view of Figure 14. [Figure 16] FIG. 4 is a schematic diagram showing the relationship between a spring material, a sliding wheel, an urging member, and a movable window used in the first embodiment of the present invention. [Figure 17] FIG. 2 is a schematic diagram showing the mounting state of the spring material and the sliding wheel on the railway vehicle. [Figure 18] FIG. 4 is a diagram showing another example of the spring material and the sliding wheel used in the first embodiment of the present invention. [Figure 19] FIG. 4 is a view showing another example of the urging member used in the first embodiment of the present invention. [Figure 20] FIG. 4 is a view showing another example of the biasing member used in the first embodiment of the present invention. [Figure 21] 21 is a diagram showing the state in which the expandable member has been expanded or contracted from the state shown in FIG. 20. [Figure 22] FIG. 11 is a view showing a movable window held at the highest position in the window lifting device according to the second embodiment of the present invention. [Figure 23] FIG. 23 shows the state in which the movable window has been lowered from the state shown in FIG. 22. [Figure 24] FIG. 24 shows the state in which the movable window has been further lowered from the state shown in FIG. 23. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the accompanying drawings.

[0011] [Example 1] As shown in FIG. 1, the present embodiment 1 is an embodiment in which a window lifting device 1 of the present invention is applied to a side window provided in a side wall 2 of a railway vehicle.

[0012] The window lifting device 1 has a fixed window 3 and a movable window 4 that can move (lift) in the vertical direction. The movable window 4 is provided on the inside or outside of the fixed window 3, and in this embodiment, the movable window 4 is provided on the outside of the fixed window 3 as shown in Figures 2 and 3.

[0013] As shown in Figures 1 to 3, fixed window 3 is provided so as to block the entire lateral lower part of opening 5 which is provided in side wall 2 of the railway vehicle and passes through the inside and outside. Movable window 4 is provided so as to be movable in the vertical direction so that when in a closed state, fixed window 3 and movable window 4 block opening 5, and when in an open state, movable window 4 opens the upper part of opening 5.

[0014] The fixed window 3 has a transparent fixed glass 6, and is fixed to the side wall 2 of the vehicle by means of fixed side frames (not shown) provided on both sides of the fixed glass 6, a fixed upper frame 7 installed between the upper ends of the fixed side frames, and a fixed lower frame 8 installed between the lower ends of the fixed side frames.

[0015] 1 to 3, the movable window 4 has movable side frames 10, 10 on both sides, a movable upper frame 11 between the upper ends of the movable side frames 10, 10, and a movable lower frame 12 between the lower ends of the movable side frames 10, 10. A transparent movable glass 13 is fixed to the movable side frames 10, 10, the movable upper frame 11, and the movable lower frame 12.

[0016] The movable window 4 is biased in the closing direction (upward) by biasing members 15, 15 provided on both lateral sides of the movable window 4, as shown in Fig. 1. Each biasing member 15 is composed of two gas springs 16, 17, as shown in Fig. 5. In this embodiment, the movable window 4 is biased by two biasing members 15, but the number of biasing members 15 may be one, three or more, and can be set as desired.

[0017] The biasing force of the biasing member 15 can be set arbitrarily, but is set so that the biasing force of the biasing member 15 is equal to the weight of the movable window 4 when the movable window 4 is in a position approximately halfway between the closed state and the fully open state.

[0018] The gas springs 16, 17 have cylinders 16a, 17a, and rods 16b, 17b that extend and retract relative to the cylinders 16a, 17a are provided. Gas that biases the rods 16b, 17b in the direction of extension is sealed inside the cylinders 16a, 17a.

[0019] 4 and 5, one gas spring 16 is provided with the cylinder 16a on the upper side and the rod 16b on the lower side, with the axial direction of the one gas spring 16 being in the vertical direction. As shown in FIG. 1, one end (upper end) of the cylinder 16a of one gas spring 16 is attached to the upper end of the movable side frame 10 of the movable window 4.

[0020] The other gas spring 17 is provided with the cylinder 17a on the upper side and the rod 17b on the lower side, so that the axial direction of the other gas spring 17 is in the vertical direction as shown in Figures 4 and 5. The other end (lower end) of 17b of the other gas spring 17 is connected to the side wall 2 of the railway car.

[0021] The other end (lower end) of the rod 16b of the first gas spring 16 is connected to the cylinder 17a of the other gas spring 17 by a connector 19 so that the other end (lower end) of the rod 16b of the first gas spring 16 is at approximately the same position as the other end (lower end) of the cylinder 17a of the other gas spring 17, as shown in Figures 4 and 5.

[0022] In this embodiment, the other end (lower end) of the rod 16b of one gas spring 16 is positioned at approximately the same position as the other end (lower end) of the cylinder 17a of the other gas spring 17, but it may be positioned on the one end side (upper side) or the other end side (lower side) of the other end (lower end) of the rod 16b of one gas spring 16.

[0023] In addition, in this embodiment, as shown in Figures 4 and 5, one gas spring 16 is arranged with the cylinder 16a on the upper side and the rod 16b on the lower side. However, as shown in Figures 6 and 7, the cylinder 16a of one gas spring 16 may be arranged on the lower side and the rod 16b on the upper side, and the cylinder 16a of one gas spring 16 may be connected to the cylinder 17a of another gas spring 17, with the tip of the rod 16b of one gas spring 16 connected to the upper end of the movable side frame 10 of the movable window 4, and the other end (lower end), which is the tip of the rod 17b of the other gas spring 17, may be connected to the side wall 2 of the railway vehicle.

[0024] In addition, with the gas springs 16, 17 shown in Figures 4 and 5 rotated up and down, the tip of the rod 17b of the other gas spring 17 may be connected to the upper end of the movable side frame 10 of the movable window 4, and one end of the cylinder 16a of one gas spring 16 may be connected to the side wall 2 of the railway vehicle.

[0025] As shown in Figs. 4 and 5, it is preferable to position the gas springs 16, 17 with the cylinders 16a, 17a on the upper side and the rods 16b, 17b on the lower side, since this makes it difficult for the gas in the gas springs 16, 17 to leak to the outside.

[0026] In this embodiment, each biasing member 15 is composed of two gas springs 16, 17, but it may be composed of two or more gas springs, and each gas spring is connected in the same way as one gas spring 16 and another gas spring 17, and one end of the gas spring that is not connected is attached to the upper end of the movable side frame 10 of the movable window 4, and the other end of the gas spring that is not connected is attached to the side wall 2 of the railway car.

[0027] By configuring the biasing member 15 as described above, the axis of the one gas spring 16 and the axis of the other gas spring 17 are not positioned on the same line but are arranged parallel to each other, and the one gas spring 16 and the other gas spring 17 are connected in such a way that a part of the one gas spring 16 and a part of the other gas spring 17 are adjacent to each other at the center of the longitudinal direction of the biasing member 15.

[0028] The movable window 4 has a cylindrical tubular member 18 that extends across the entire horizontal direction on the indoor side of the movable upper frame 11, and both ends of the tubular member 18 are rotatably attached to the movable side frames 10, 10 and are biased to rotate upwards by a biasing member not shown.

[0029] 1 to 3, an operating handle 20 is provided on the indoor side of the cylindrical member 18, spanning from one end to the other end of the movable window 4. The cylindrical member 18 is biased in a direction to rotate upward by a biasing member, so that the operating handle 20 together with the cylindrical member 18 is also biased in a direction to rotate upward.

[0030] As shown in FIG. 1, the attachment portions of the cylindrical member 18 to the movable side frames 10, 10 on both sides are designed not to be visible from the inside of the room.

[0031] As shown in Figures 1, 12 and 13, the operating handle 20 is provided across the entire lateral length of the movable window 4 from one end to the other end, and as shown in Figures 12 and 13, passengers on board can operate the operating handle 20 from any position in the vicinity of the movable window 4.

[0032] At both ends of the tubular member 18, a hook-shaped first engagement portion 21 is formed integrally with the tubular member 18 in a location that cannot be seen from inside the room, and the tubular member 18 and the first engagement portion 21 are capable of rotating in the vertical direction.

[0033] A hook-shaped second engagement portion 22 that can be detachably engaged with the first engagement portion 21 of the cylindrical member 18 is provided on the side wall 2 of the railway vehicle. As shown in Figures 2 and 8, when the first engagement portion 21 and the second engagement portion 22 are engaged with each other, the movable window 4 can be held in a closed state.

[0034] The first engaging portion 21 and the second engaging portion 22 may have any structure other than the hook shape shown in Figs. 2 to 11, as long as they are detachable from each other.

[0035] When the operating handle 20 is pushed downward as shown in FIG. 9 in order to move the movable window 4 downward, which is the opening direction, from the closed state shown in FIG. 8, the tubular member 18 and the first engagement portion 21 rotate downward against the biasing force of a biasing member not shown, and the engagement state between the first engagement portion 21 and the second engagement portion 22 is released.

[0036] As shown in FIGS. 2, 3, and 8 to 11, the cylindrical member 18 is provided with a third engagement portion 25 made of a magnet so as to protrude in a direction perpendicular to the operating handle.

[0037] A fourth engagement portion 26 consisting of a magnet that can be detachably engaged with the third engagement portion 25 is provided on the upper surface of the fixed upper frame 7 of the fixed window 3. The third engagement portion 25 and the fourth engagement portion 26 can have any structure other than a magnet as long as they are detachable from each other.

[0038] When the operating handle 20 is rotated downward and the third engagement portion 25 of the tubular member 18 and the fourth engagement portion 26 of the fixed window 3 are engaged with each other as shown in Figure 10, the movable window 4 can be maintained in the most open state (Figure 3).

[0039] As shown in Figures 3 and 10, when the operating handle 20 is lifted in the upward direction, which is the direction in which the movable window 4 is closed, from the state in which the third engagement portion 25 and the fourth engagement portion 26 are engaged with each other, the operating handle 20 rotates upward as shown in Figure 11, the engagement state between the third engagement portion 25 and the fourth engagement portion 26 is released, and the movable window 4 can be moved upward.

[0040] The left and right movable side frames 10, 10 of the movable window 4 are respectively composed of a carbody side frame 27 and a window side frame 28. The carbody side frame 27 is attached to the side wall 2 of the railway vehicle, and the window side frame 28 is removably connected to the carbody side frame 27. The movable upper frame 11, the movable lower frame 12, and the movable glass 13 are attached to the window side frame 28. Both ends of the cylindrical member 18 are rotatably connected to the carbody side frame 27.

[0041] In this embodiment, each movable side frame 10 is composed of the vehicle body side frame 27 and the window side frame 28, but the vehicle body side frame 27 and the window side frame 28 may be formed integrally.

[0042] This allows the mutual connection between the car body side frames 27 and 27 to be released without removing the entire lifting device 1 from the side wall 2, and by removing both ends of the tubular member 18 from the car body side frame 27, the movable window 4 can be removed from the side wall 2, making it easy to perform maintenance such as inspection and repair of the lifting device 1.

[0043] 16 and 17, a spring material 30 having a W-shaped cross section and opening laterally and inwardly is provided on a side wall 2 of the railway car so as to be positioned on both sides of a movable window 4 as shown in Fig. 16. A through hole (not shown) is formed in the spring material 30 at the center in the circumferential direction, and a bolt 32 is inserted through the through hole with loose fit, and a nut 33 is screwed onto the bolt 32. The spring material 30 is attached to the side wall 2 by the bolt 32 and the nut 33.

[0044] As shown in Fig. 17, the spring material 30 is made of a metal having spring properties, has a mounting portion 30a with a through hole formed in the circumferential center, and has tapered portions 30b, 30b located on the side wall 2 side as they move outward in the circumferential direction on both sides of the mounting portion 30a, and arc-shaped urging portions 30c, 30c are formed on the circumferential outer side of each tapered portion 30b, 30b, and an arc-shaped abutting portion 30d with a smaller diameter than the urging portion 30c is formed at the tip of each urging portion 30c. An opening 34 is formed between the abutting portions 30d, 30d, opening inward in the left-right direction, and this opening 34 is formed in the up-down direction, which is the moving direction of the movable window 4, as shown in Fig. 16.

[0045] By tightening the bolt 32 or the nut 33, the distance between the contact portions 30d, 30d of the spring material 30 becomes narrower, and by loosening the bolt 32 or the nut 33, the distance between the contact portions 30d, 30d of the spring material 30 becomes wider. In an opening 34 between the contact portions 30d, 30d of the spring material 30, a sliding wheel 35 having a circular cross section is rotatably provided.

[0046] The sliding wheel 35 is composed of a pair of enlarged diameter portions 35a, 35a and a small diameter portion 35b provided between the enlarged diameter portions 35a, 35a, and at least a part of the enlarged diameter portion 35a is formed so that the diameter increases from the inside to the outside. The contact portions 30d, 30d of the spring material 30 contact the pair of enlarged diameter portions 35a, 35a. The small diameter portion 35b may not be provided.

[0047] The sliding wheel 35 is sandwiched between the contact portions 30d, 30d of the spring material 30 and is biased toward the center of the sliding wheel 35, so that the spring material 30 prevents the sliding wheel 35 from rotating.

[0048] The sliding wheel 35 is rotatably mounted on a connecting rod 37 , and the connecting rod 37 is connected to the upper end of the biasing member 15 and the upper end of the movable side frame 10 of the movable window 4 .

[0049] As the movable window 4 moves up and down, the connecting rod 37 and the sliding wheel 35 also move up and down, and the sliding wheel 35 rotates. Since the spring material 30 acts as a resistance to the rotation of the sliding wheel 35, the movable window 4 can be held at any height against the movement caused by its own weight and the biasing force of the biasing member 15, for example by opening the movable window 4 slightly for ventilation.

[0050] In addition, the radius of the arcs of the abutment portions 30d, 30d of the spring material 30 may be the same as shown in Figure 17, or, as shown in Figure 18, the radius of the arcs of the abutment portions 41, 42 of the spring material 40 may be different so that the force urging one abutment portion 41 toward the axial direction of the sliding wheel 35 and the force urging the other abutment portion 42 toward the axial direction of the sliding wheel 35 are different. For example, the resistance to rotation of the sliding wheel 35 in the downward direction is made greater than the resistance to rotation of the sliding wheel 35 in the upward direction, making it easier for the sliding wheel 35 to rotate upward than downward, thereby making it more difficult for the sliding wheel 35 to rotate downward and making it more difficult for the movable window 4 to move downward.

[0051] By configuring the biasing member 15 with two gas springs 16, 17, the movable distance of the rods 16b, 17b can be made longer than in the case of configuring with one gas spring, assuming the same vertical length of the biasing member 15, and the movement distance of the rods 16b, 17b can be made longer in a limited installation space. Also, the amount of gas sealed in the cylinders 16a, 17a can be increased, and the repulsive force of the rods 16b, 17b per unit contraction amount can be reduced, allowing the movable window 4 to be moved with a small operating force.

[0052] In the above embodiment 1, each of the biasing members 15 is composed of a plurality of gas springs 16, 17, but it may be composed of any member such as a coil spring as long as it can bias the movable window 4 in the upward direction.

[0053] 19, the urging member 39 may be configured by one gas spring 43 and a reservoir tank 44 that communicates with the inside of a cylinder 43a of the gas spring 43. The volume of gas in the urging member 39 may be increased to reduce the repulsive force per unit contraction amount of the rod 43b.

[0054] In addition, as the biasing member 45, as shown in Figures 20 and 21, a first telescopic member 47 having a smaller diameter than the main body portion 46 may be provided so as to be extendable and contractable relative to the main body portion 46, and a second telescopic member 48 having a smaller diameter than the first telescopic member 47 may be provided so as to be extendable and contractable relative to the first telescopic member 47.

[0055] A first telescopic member 47 is provided in a telescopic manner in a main body interior 46a of the main body 46, and a gas is sealed in a space surrounded by a casing 46b of the main body 46 and the first telescopic member 47, and the first telescopic member 47 is urged in an extension direction by the gas. A second telescopic member 48 is provided in a telescopic manner in a first telescopic interior 47a of the first telescopic member 47, and a gas is sealed in a space surrounded by a casing 47b of the first telescopic member 47 and the second telescopic member 48, and the second telescopic member 48 is urged in an extension direction by the gas. The main body 46, the first telescopic member 47, and the second telescopic member 48 are arranged and formed in a telescopic shape.

[0056] The number of telescopic members 47, 48 can be set as desired as long as it is two or more, and the main body 46 and the multiple telescopic members are arranged and formed in a telescopic manner, and each telescopic member is biased in the extension direction by gas sealed inside the member arranged on the outside, and the biasing member 45 is composed of a telescopic air cylinder.

[0057] By arranging and forming the main body 46, the first telescopic member 47, and the second telescopic member 48 in a telescopic manner, the repulsive force per unit amount of contraction in the telescopic members 47, 48 can be reduced, and the movable window 4 can be moved with a small operating force.

[0058] In addition, in the above-mentioned first embodiment, the fixed window 3 is provided on the lower side and the movable window 4 is provided on the upper side, but the fixed window 3 may be provided on the upper side and the movable window 4 on the lower side.

[0059] Moreover, the fixed window 3 may be configured to move vertically by providing the movable window 4 and its associated members in the same manner.

[0060] [Example 2] In this second embodiment, a window lifting device 51 of the present invention will be described based on an embodiment in which it is applied to a drop window in an entrance door 52 of a driver's cab or a conductor's room of a railway vehicle, as shown in Figs. 22 to 24.

[0061] 22 to 24, a pair of rails 53a, 53b are provided on the left and right sides of the door 52 in the up-down direction, and a movable window 54 is provided so as to be able to rise and fall along the rails 53a, 53b. In the following description, the direction perpendicular to the rising and lowering direction (YY direction) of the movable window 54 is defined as the left-right direction (XX direction).

[0062] A guide groove 56 is provided in the left-right direction (XX direction) at the lower end of the movable window 54, and a rotational movement member 57 is provided in this guide groove 56 so as to be movable in the left-right direction (XX direction).

[0063] 22 to 24, one end of a first connecting arm 60 is connected to the rotational movement member 57 so as to be rotatable in the lifting direction (YY direction) around a rotation shaft 60a. The other end of the first connecting arm 60 is connected to a main body such as a door or a car body so as to be rotatable around a rotation shaft 60b, and is rotatably connected to the door 52 in this embodiment.

[0064] One end of a second connecting arm 61 is connected to the other end side of the first connecting arm 60 so as to be rotatable in the up-down direction (YY direction) about a rotation shaft 61a located between the rotation shafts 60a, 60b. The other end of the second connecting arm 61 is connected to one end of a link member 65 so as to be rotatable in the up-down direction (YY direction) about the first rotation shaft 61b.

[0065] 22 to 24, the link member 65 is connected to a main body such as a door or a vehicle body so as to be rotatable in the lifting direction (YY direction) about a rotation shaft 65a, and in this embodiment, is rotatably connected to the door 52. That is, the link member 65 is adapted to rotate in the lifting direction (YY direction) with respect to the main body such as the door 52, about the rotation shaft 65a.

[0066] The first connecting arm 60 and the second connecting arm 61 form a connecting member 63 .

[0067] A second rotating shaft 65b is provided at the other end of the link member 65, and one end of a telescopic member 66 such as a telescopic rod is connected to the second rotating shaft 65b. The telescopic member 66 is biased in the direction of extension by a biasing member 67 made of a compression spring having a biasing force that always biases the telescopic member 66 in the direction of extension, and the other end of the telescopic member 66 and the other end of the biasing member 67 are fixed to a main body such as a door or a car body, and in this embodiment, are fixed to the door 52. By the extension and contraction of the biasing member 67, one end of the telescopic member 66 advances and retreats relative to the second rotating shaft 65b of the link member 65, and the link member 65 rotates in the lifting direction (YY direction) around the rotation shaft 65a.

[0068] In this embodiment, the extension and contraction of the biasing member 67 causes the extension and contraction of the extension member 66, and the link member 65 rotates around the rotation axis 65a. However, it is sufficient if the link member 65 can rotate in the lifting and lowering direction (YY direction) around the rotation axis 65a as the biasing member 67 extends and contracts. A non-extendable rod may be moved forward and backward by the extension and contraction of the biasing member 67, or one end of the biasing member 67 may be connected to the second rotation axis 65b.

[0069] In the link member 65, the distance between the rotation shaft 65a and the first rotation shaft 61b is set longer than the distance between the rotation shaft 65a and the second rotation shaft 65b, and each length can be set arbitrarily. In this embodiment, the link member 65 is formed in a triangular shape as shown in Figures 22 to 24, but the shape can be arbitrarily formed.

[0070] Furthermore, the angle between the line connecting the axis of the rotation shaft 65a of the link member 65 and the axis of the first rotating shaft 61b and the line connecting the axis of the rotation shaft 65a and the axis of the second rotating shaft 65b can be set arbitrarily.

[0071] The first rotating shaft 61b to which the second connecting arm 61 is connected is positioned on the opposite side of the rotating shaft 65a in the left-right direction (XX direction) from the mounting position, which is the other end of the biasing member 67 fixed to the main body portion.

[0072] In this embodiment 2 as well, although not shown in Figs. 22 to 24, spring materials 30, 40 similar to those in the above-mentioned embodiment 1 are provided so as to be positioned on both sides of the movable window 54. The spring materials 30, 40 are configured in the same manner as in the above-mentioned embodiment 1, and are attached to the entrance door 52 using the same bolts 32 or nuts 33 as in the above-mentioned embodiment 1.

[0073] The spring materials 30, 40 are provided with a sliding wheel 35 similar to that in the above-mentioned first embodiment, and the sliding wheel 35 is rotatably mounted on a connecting rod (not shown), which is connected to the upper end of the side of the movable window 54.

[0074] 22, the first rotating shaft 61b moves upward, causing the second connecting arm 61 to move upward, and the first connecting arm 60 to move upward, so that the lowering window 54 can be held at the highest position against its own weight.

[0075] 23 and 24, when the lowering window 54 is manually pushed downward against the biasing force of the biasing member 67, the rotary movement member 57 moves in the guide groove 56 to the left in Fig. 22 while pushing down one end of the first connecting arm 60, the second connecting arm 61 moves downward, and the first rotating shaft 61b moves downward to contract the expandable member 66. At this time, the frictional force between the spring members 30, 40 and the sliding wheel 35 makes it possible to hold the lowering window 54 at any position.

[0076] The force of the biasing member 67, which is composed of a compressed coil spring, tends to expand, thereby biasing the first rotating shaft 61b in an upward direction and biasing the lowering window 54 in an upward direction. Therefore, even if the biasing member 67 is damaged, for example, broken, the lowering window 54 cannot descend unless the biasing member 67 is compressed, so that the lowering window 54 can be held upward.

[0077] Although the connecting member 63 is composed of two members, the first connecting arm 60 and the second connecting arm 61, the number of members constituting the connecting member and its structure can be set arbitrarily as long as the lowering window 54 can be raised and lowered via the connecting member by rotating the link member 65.

[0078] The rest of the structure is the same as in the first embodiment, so a description thereof will be omitted.

[0079] The second embodiment also provides the same effects as the first embodiment.

[0080] [Other Examples] If the window lifting device of the present invention is installed in a railway vehicle and can be applied to windows that have movable windows that can move up and down, it can be applied to windows other than those in the above-mentioned embodiments, such as drop windows in the entrance doors of the driver's cab or conductor's room, windows in partition doors in passenger compartments, and windows in toilets and service rooms (multipurpose rooms such as washrooms and smoking rooms / nursing rooms). [Explanation of symbols]

[0081] 1,51 Window lifting device 4,54 Movable window 15, 39, 43, 67 Pressing member 30,40 Spring material 30d,41,42 Contact part 35 Sliding wheel

Claims

1. A movable window for use in a railway vehicle is provided so as to be movable up and down; The movable window is biased upward by a biasing member; a spring material having an opening formed in a moving direction of the movable window is provided on the railway vehicle, and a sliding wheel is provided at the opening of the spring material so as to be rotatable with respect to the movable window; A window lifting device characterized in that the sliding wheel is clamped by the spring material and the contact portion with the spring material is biased in the axial direction of the sliding wheel to suppress rotation of the sliding wheel.

2. The sliding rings of the spring material abut against each other at one abutment portion and the other abutment portion, 2. A window lifting device as claimed in claim 1, characterized in that the force urging one contact portion in the axial direction of the sliding wheel is different from the force urging the other contact portion in the axial direction of the sliding wheel.

Images