Drop window fixing structure

Abstract

To provide a descending window fixing structure capable of individually adjusting a descending window, and shortening work time.SOLUTION: A descending window fixing structure 1 comprises: a receiving part 1b provided on a bottom end 101 of a descending window 100; and a pressing part 1a that energizes the receiving part 1b in a horizontal direction and comes into slide contact with the same. The pressing part 1a includes a vertically movable slider 4 on the inside surrounded with a mounting plate 18 and a frame body 2. A biasing spring 6 biases the slider 4 downward. A swing arm 8 is pivoted on the slider 4 to be swingable towards the receiving part 1b side. A roller 10a is provided on a swing end 10 of the swing arm 8, capable of rolling along the receiving part 1b. A horizontal guide part 2a that guides a rotation shaft 12 of the roller 10a in the horizontal direction is provided in the frame body 2.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a downward window, and more particularly to a downward window fixing structure for stably fixing the downward window of a railway vehicle in a closed state.

Background Art

[0002] In the side window of a railway vehicle, a downward window provided with a lifting mechanism for applying upward biasing force on the lower end side is known. FIG. 11 shows a conventional downward window 100 provided with a balancer 103 (balancing device) as a lifting mechanism. When this downward window 100 is opened, an appropriate upward biasing force acts by the balancer 103, so that it is not necessary for the user to support the entire weight of the window like a drop window, and the opening and closing operation can be performed safely and smoothly.

[0003] Note that the above-described balancer 103 works auxiliary when the downward window 100 is at the intermediate position in the opening and closing range. In order to maintain the completely closed state, another configuration for fixing the closed state is required. Therefore, the conventional downward window 100 provided with the balancer 103 is provided with a downward stop structure 120 (fixing structure) to prevent the downward window 100 in the closed state from naturally descending due to vibrations of the vehicle body or the like.

[0004] FIG. 12 is a cross-sectional view of the downward stop structure 120 taken along the line XII-XII of FIG. 11. A pin receiver 120b is provided at the lower end 101 of the downward window 100. Inside the housing wall 102 that houses the opened (lowered) downward window 100, a plunger 122 is provided on the vehicle interior side of the downward window 100 so as to face the pin receiver 120b. An inclined surface is formed on the plunger 122 side of the pin receiver 120b, and the pin 122a of the plunger 122 is formed to engage at the lower end side of this inclined surface. When closing the downward window 100, the pin 122a of the plunger 122 is in sliding contact with the inclined surface of the pin receiver 120b and engages at the lower end, whereby the downward window 100 can be fixed in the closed state.

[0005] By the way, the above-described downward stop structure 120 is provided with an adjustment mechanism to absorb the influence of variations for each lowering window 100. In the configuration of FIG. 12, by inserting a liner 121 between the plunger 122 and the mounting seat 123, it is possible to finely adjust the position of the plunger 122 with respect to the pin receiver 120b. As described above, the downward stop structure 120 of the lowering window 100 is composed of a pin receiver 120b and a pressing portion 120a, and this pressing portion 120a is composed of a plunger 122, a mounting seat 123, and a liner 121.

[0006] A lowering window equipped with a conventional balancer is disclosed in Patent Document 1.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] However, it is rare for the thickness of the liner 121 to exactly match the required adjustment amount, and the one with the closest dimension is selected. For this reason, there may be a slight difference in the operating feeling depending on the installation location.

[0009] Also, in the case of the configuration as shown in FIG. 12, the work of attaching the plunger 122 is performed from the inside of the vehicle. Specifically, when the lowering window 100 is pulled down a little from the fully closed state, while sensuously confirming the resistance during pulling down so that the locked state is released with a specified force, it is necessary to repeatedly insert and remove a plurality of liners 121 with different thicknesses for adjustment, and the work burden is large. Therefore, an object of the present invention is to provide a lowering window fixing structure that can be individually finely adjusted for the lowering window and can shorten the working time.

[0010] ​

Means for Solving the Problem

[0011] In order to achieve the above object, the downward window fixing structure of the present invention is a downward window fixing structure for fixing a downward window in a closed position, and within a housing wall of the downward window, a slider provided to be vertically movable at a distance in the out-of-plane direction of the downward window, and An adjustment screw that is provided integrally with a base that is screwed to a mounting plate within the housing wall and that relatively moves with respect to the mounting plate by the screw advancement and retraction of the adjustment screw, and one end of which is fixed to the base and the other end of which is a biasing force for biasing the slider downward spring and a swing arm pivotally supported by the slider so as to swing toward the downward window side, a horizontal guide portion for guiding the swing end of the swing arm to move horizontally toward the downward window as the slider descends, and a receiving portion provided at the lower end of the downward window and formed with a recess for positioning the downward window in a closed state by fitting of the swing end.

[0012] Further, the downward window fixing structure of the present invention, in addition to the above configuration, includes a frame that holds the slider vertically movably and in which the horizontal guide portion is formed, a roller that constitutes the swing end of the swing arm and is pivotally supported parallel to the axial direction of the swing, and a rotating shaft that pivotally supports the roller and at least one of the edges of which is guided horizontally by the horizontal guide portion.

Advantages of the Invention

[0013] As described above, according to the present invention, a biasing force acting in the vertical direction can be converted into an indirect biasing force acting in the horizontal direction via a swing mechanism. Thereby, within the housing wall, a biasing means can be provided using a relatively spacious vertical space, so that in addition to improving the design freedom of the biasing mechanism, it becomes possible to suppress the dimension in the thickness direction of the housing wall of the downward window.

[0014] Further, according to the present invention, the sliding friction of the swing end with respect to the receiving portion is reduced by the roller, so that it becomes possible to smoothly position the downward window.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

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Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Mode for Carrying Out the Invention

[0016] Hereinafter, the lowering window fixing structure according to an embodiment of the present invention will be described with reference to the drawings.

[0017] FIG. 1 is a front view of the lowering window 100 provided with the lowering window fixing structure 1 of the present invention.

[0018] A balancer 103 for reducing the weight of the lowering window 100 is provided in the accommodation wall 102 that accommodates the lowering window 100 when it is open. Near this balancer 103 and on the lower end side of the lowering window 100, a lowering window fixing structure 1 for fixing the lowering window 100 in the closed state is provided.

[0019] While there is a limit to the width of the vehicle body, in order to expand the interior space, the space in the vehicle width direction within the storage wall 102 is limited. For this reason, a fixing structure that can generate sufficient force to stably support the heavy drop window 100 while having a relatively compact structure is desired.

[0020] FIG. 2 is a perspective view of the pressing portion 1a constituting the drop window fixing structure 1 of FIG. 1. Here, for convenience of explanation, a part of the frame body 2 is broken to show the configuration of the biasing spring 6.

[0021] A frame body 2 formed by bending a metal plate is welded to a mounting plate 18 attached to a vertically extending portion within the storage wall 102 (see FIG. 1). A slider 4 is provided at the center of this frame body 2 so as to be slidable in the vertical direction. This slider 4 is biased downward by two biasing springs 6 provided above. A swing arm 8 is pivotally supported on the slider 4 so as to be swingable. The swing end 10 of the swing arm 8 according to the present embodiment is constituted by a roller 10a and a rotating shaft 12.

[0022] Since the movement of the slider 4 and the swing arm 8 is restricted by the frame body 2, they do not perform a free arc movement. The frame body 2 is formed with a horizontal guide portion 2a that guides the edge portions 12a on both sides of the rotating shaft 12 of the roller 10a in the horizontal direction, and a slider restricting portion 2b that restricts the downward movement of the slider 4 by a notch.

[0023] With such a configuration, when no external force acts on the roller 10a, the swing shaft 9 that pivotally supports the swing arm 8 on the slider 4 is pressed against the slider restricting portion 2b. On the other hand, when an external force that pushes the roller 10a toward the mounting plate 18 side is received, the swing arm 8 moves so that the extending direction approaches the vertical direction, and the rotating shaft 12 slides horizontally along the horizontal guide portion 2a. As a result, the swing shaft 9 floats from the slider restricting portion 2b and the biasing spring 6 contracts.

[0024] FIG. 3 is a cross-sectional view taken along the line I-I of FIG. 1.

[0025] The downward window fixing structure 1 is composed of a pressing portion 1a shown in FIG. 2 and a receiving portion 1b provided at the lower end 101 of the downward window 100. The swing arm 8 of the pressing portion 1a is configured to be swingable toward the receiving portion 1b side. The receiving portion 1b is formed with an inclined portion 1b1 inclined downward toward the pressing portion 1a side, and below this inclined portion 1b1, a concave portion 1b2 engageable with the roller 10a is formed. FIG. 3 shows a state where the roller 10a is engaged with the concave portion 1b2, that is, a state where the downward window 100 is fixed in the closed position.

[0026] As described with reference to FIG. 2, the downward biasing force of the biasing spring 6 is transmitted as a force that pushes the roller 10a horizontally through the slider 4 and the swing arm 8. When the downward window 100 is slightly opened from the closed state, when the roller 10a rides up from the engaged concave portion 1b2 to the inclined portion 1b1, it is pushed back horizontally, and the slider 4 is lifted against the biasing force of the biasing spring 6. The magnitude of the biasing force of this biasing spring 6 can be finely adjusted by an adjustment screw 16, which will be described later with reference to FIG. 4. Therefore, even if there are variations in the installation state of the downward window 100, it can be adjusted so that it can be operated with the same operating feeling.

[0027] FIG. 4 shows a central longitudinal section on the pressing portion 1a side of the downward window fixing structure 1 in FIG. 2.

[0028] A base 3 with a U-shaped cross-section is provided so as to contact the mounting plate 18. An urging spring 6 and a slider 4 are provided with respect to the base 3. An adjustment screw 16 is integrally provided below the base 3. When the adjustment screw 16 is operated so as to move downward relative to the mounting plate 18, the urging spring 6 contracts by the same length as the moving amount of the adjustment screw 16. At this time, in the assembled state as shown in FIG. 4, the swing shaft 9 that pivotally supports the swing arm 8 so as to be swingable with respect to the slider 4 abuts against the slider restricting portion 2b, so that the swing arm 8 does not move. However, since the force pressing the slider 4 and the swing shaft 9 against the slider restricting portion 2b is increasing, the urging force against the force pressing the roller 10a toward the mounting plate 18 side increases. Thus, by operating the adjustment screw 16, it is possible to adjust the pressing force against the receiving portion 1b side.

[0029] In the configuration according to the present embodiment, as can be seen in FIG. 4, since the urging spring 6 is arranged so as to be able to expand and contract in the vertical direction, sufficient urging can be generated even in a vehicle where the space in the vehicle width direction is limited, and the degree of design freedom is also improved.

[0030] FIG. 5 is a diagram for explaining the operation during the operation of the lower window fixing structure, (a) is a cross-sectional view taken along the line I-I of FIG. 1, and (b) is an enlarged view of a portion A. FIG. 5(a) shows a state in which the roller 10a is rolling on the inclined portion 1b1 of the receiving portion 1b and relatively moving to the lower concave portion 1b2 immediately before the lower window 100 reaches the closed position. Therefore, at this time, the roller 10a is receiving a force that rubs it up by the inclined portion 1b1. The action of the force at this time is shown in FIG. 5(b).

[0031] Figure 5(b) shows the vertical resistance force F received from the inclined portion 1b1 of the receiving portion 1b, and the component forces F1 and F2 of the vertical resistance force F. The component force F1 is the horizontal component along the horizontal guide portion 2a. As can be seen from Figure 5(b), a component force F2 acting in a direction away from the horizontal guide portion 2a upward is generated with respect to the roller 10a that receives an external force from the receiving portion 1b. Thereby, the force by which the biasing spring 6 presses the rotating shaft 12 against the horizontal guide portion 2a is relaxed. That is, by reducing the friction between the rotating shaft 12 and the horizontal guide portion 2a, it becomes possible to reduce the wear of the sliding contact region.

[0032] Further, if the rotating shaft 12 is configured to be rotatable with respect to the swing arm 8, a force that causes the rotating shaft 12 to roll on the horizontal guide portion 2a is generated when a force that rubs the roller 10a upward acts on the receiving portion 1b. Thereby, the friction between the rotating shaft 12 and the horizontal guide portion 2a can be further reduced, and the durability of the descending window fixing structure 1 can be improved.

[0033] On the other hand, in the case of the movement of lowering the descending window 100, since a force that causes the receiving portion 1b to rub the roller 10a downward acts, in the sliding contact region of the inclined portion 1b1, the rotating shaft 12 horizontally moves on the horizontal guide portion 2a so as to roll in the direction opposite to the above.

[0034] Thus, in the inclined portion 1b1, it is possible to reduce the friction between the rotating shaft 12 and the horizontal guide portion 2a whether the descending window 100 is opened or closed.

[0035] <Modification Example 1> Figure 6 is a perspective view showing Modification Example 1 of the pressing portion 1a in Figure 2. Here, for the sake of convenience of explanation, illustration of the common part is omitted so as to easily understand the difference from the pressing portion 1a.

[0036] In the pressing part 50A which is Modification Example 1, the configuration of the slider 54A provided so as to be slidable up and down with respect to the base 52A is different from that of the pressing part 1a. The slider 54A is divided into two parts so as to correspond to the two biasing springs 56A respectively. And a roller 55A is provided between these two sliders 54A. Since this roller 55A is configured to be rotatable with respect to the base 52A, the friction associated with the vertical movement of the slider 54A is reduced, and a smooth operating feeling can be obtained.

[0037] Here, a configuration in which two biasing springs 56A are provided is shown as an example, but the biasing spring 56A may be constituted by a single one or three or more. In this case, the roller 55A provided so as to be rotatable relative to the slider 54A is not limited to a configuration with one in the center. Therefore, a configuration provided in contact with one side surface of the slider 54A may be used, or a configuration in which a plurality of rollers are provided may be used.

[0038] <Modification Example 2> FIG. 7 is a perspective view showing Modification Example 2 of the pressing part 1a in FIG. 2. Also in this case, as in the case of Modification Example 1, for convenience of explanation, illustration of common parts is omitted.

[0039] In the pressing part 50B which is Modification Example 2, a swing arm 58B is connected to the slider 54B via a hinge 55B. Even with such a simple configuration, the biasing in the vertical direction by the biasing spring 56B can be converted into the biasing in the horizontal direction of the swing end of the swing arm 58B.

[0040] Here, a configuration in which the hinge 55B is provided on the surface of the slider 54B on the receiving part 1b side (see FIG. 3) is shown as an example. However, as long as the swing arm 58B can swing, for example, it may be provided on the center line in the vehicle width direction of the slider 54B.

[0041] <Modification Example 3> FIG. 8 is a perspective view showing Modification Example 3 of the pressing part 1a in FIG. 2. Also in this case, as in the case of Modification Example 1, for convenience of explanation, illustration of common parts is omitted.

[0042] In the pressing part 50C which is Modification Example 3, the structure of the swinging end of the swinging arm 58C is different from that of the pressing part 1a in FIG. 2. In the pressing part 50C, a swinging end 60C having a shape combining a prism part and a hemispherical part is adopted. If the hemispherical part of the swinging end 60C is configured to be able to stably contact the receiving part 1b (see FIG. 3), the friction coefficient can be kept small and a smooth operating feeling can be obtained. For example, if a guide structure that contacts horizontally is provided on the frame body side of the outer surface of the swinging end 60C, the posture of the swinging end 60C will be stabilized.

[0043] Also, if the friction coefficient is the same, the larger the area between the prism part of the swinging end 60C and the above-mentioned horizontally contacting guide structure, the more the pressure is dispersed, so it is possible to move more smoothly.

[0044] <Modification Example 4> FIG. 9 is a perspective view showing Modification Example 4 of the pressing part 1a in FIG. 2. Here too, as in the case of Modification Example 1, for the sake of convenience of explanation, the illustration of the common part is omitted.

[0045] In the pressing part 50D which is Modification Example 4, in a configuration where a biasing spring 56D that biases downward with respect to the slider 54D is provided on the lower side of the slider 54D, it is different from the pressing part 1a in FIG. 2. Even with such a configuration, it is possible to cause a downward biasing force on the slider 54D in the same manner as the pressing part 1a in FIG. 2. Also, fine adjustment can be similarly performed using the adjustment screw 66D.

[0046] Here, a configuration in which the biasing spring 56D is provided along the vertical direction is shown as an example. However, if it is possible to bias the slider 54D downward, it is not necessary to arrange it in parallel with the vertical direction (the sliding direction). For example, it is also possible to arrange two biasing springs 56D in a U shape. Also, a configuration in which it is used in combination with the biasing spring 6 as shown in FIG. 2 is acceptable.

[0047] <Modification Example 5> FIG. 10 is a perspective view showing Modification Example 5 of the pressing portion 1a in FIG. 2. Here too, for the sake of convenience of explanation, illustration of common parts is omitted as in the case of Modification Example 1.

[0048] In the pressing portion 50E which is Modification Example 5, in a configuration where a horizontal base 55E is added at a position where the roller 60E can roll, it is different from the pressing portion 1a in FIG. 2. In addition to the horizontal guide structure between the horizontal guide portion 52Ea formed on the frame body 52E and the rotation shaft 62E, since the roller 60E can be guided in the horizontal direction also on the side of the horizontal base 55E, the load on the rotation shaft 62E can be reduced and wear can be suppressed.

[0049] Here, a configuration in which the horizontal base 55E that guides the roller 60E in the horizontal direction has a width approximately the same as that of the roller 60E is shown as an example. However, as long as the roller 60E can stably roll in the horizontal direction, it is not limited to a configuration having a horizontal plane with the same width as the roller 60E. For example, a linear member that can be in contact with a part of the roller 60E and can guide it in the horizontal direction may be used. Also, although the roller 60E and the rotation shaft 62E that constitute the swing end are shown as an example of a configuration including the horizontal guide portion 52Ea and the horizontal base 55E which are two horizontal guide structures, a configuration having only the horizontal base 55E may be used.

[0050] The configurations of the above embodiments are examples of the present invention, and in addition to the modification examples described above, the following modification examples are also included.

[0051] (1) In the above embodiment, a configuration using a coil spring as biasing means for biasing the slider 4 downward is shown as an example. However, as long as a configuration can obtain a sufficient force to stably maintain the lowering window 100, biasing means other than the coil spring may be used. For example, a configuration using the elastic repulsive force of a leaf spring or the repulsive force of magnetic force may also be used.

[0052] (2) In the above-described embodiment, the configuration in which the horizontal guide portion 2a is formed by a notch in the frame body 2 is taken as an example. However, as long as it is a configuration for guiding the roller 10a and the rotating shaft 12 in the horizontal direction, a long hole extending in the horizontal direction formed through the frame body 2 may be used. Further, instead of the horizontal guide portion 2a formed by a notch, a groove extending in the horizontal direction for guiding the edge of the rotating shaft 12 may be formed inside the frame body 2 by cutting or the like.

[0053] (3) In the above-described embodiment, the configuration in which the receiving portion 1b of the lowering window fixing structure 1 is formed with an inclined portion 1b1 that inclines downward toward the pressing portion 1a side is shown as an example. However, as long as at least a concave portion 1b2 with which the roller 10a can engage is formed on the receiving portion 1b side, the inclined portion 1b1 does not have to be formed.

[0054] (4) In the above-described embodiment, an example in which both edge portions 12a on both sides of the rotating shaft 12 of the roller 10a are configured to rest on the horizontal guide portion 2a is shown. However, as long as it is possible to operate stably without causing distortion, a configuration in which only one of them rests on the horizontal guide portion 2a may be used.

[0055] (5) In the above-described embodiment, a cylindrical roller 10a is adopted as the configuration of the swing end 10 and the shown configuration is taken as an example. However, as long as it has a rotationally symmetric shape that can roll smoothly with respect to the receiving portion 1b, it does not have to be a cylindrical shape. For example, a spherical shape or a roller having different diameters in the axial direction may be used.

Industrial Applicability

[0056] The lowering window fixing structure of the present invention is suitable for use in vehicles. Therefore, it is useful not only for railway vehicles but also for large vehicles such as buses.

Explanation of Reference Numerals

[0057] 1 Lowering window fixing structure 1a Pressing portion 1b Receiving portion 1b1 Inclined portion 1b2 Concave portion 2 Frame body 2a Horizontal guide portion 2b Slider regulating portion 3 Base 4 Slider 6 Biasing spring (biasing means) 8 Rocking arm 9 Rocking shaft 10 Rocking end 10a Roller 12 Rotating shaft 12a Edge 16 Adjusting screw 18 Mounting plate 50A Pressing portion 52A Base 54A Slider 55A Roller 56A Biasing spring 50B Pressing portion 54B Slider 55B Hinge 56B Biasing spring 58B Rocking arm 50C Pressing portion 54C Slider 58C Rocking arm 60C Rocking end 50D Pressing portion 54D Slider 56D Biasing spring (biasing means) 66D Adjusting screw 68D Mounting plate 50E Pressing portion 52E Frame body 52Ea Horizontal guide portion 55E Horizontal platform 58E Rocking arm 60E Roller 62E Rotating shaft 66E Adjusting screw 100 Lowering window 101 Lower end 102 Receiving wall 103 Balancer

Claims

1. A drop window fixing structure for fixing a drop window in a closed position, A slider that is provided within the receiving wall of the descending window and is movable up and down at a distance in an outward direction of the descending window; a base that is integral with an adjustment screw that is screwed into a mounting plate within the storage wall and moves relatively to the mounting plate as the adjustment screw advances and retreats; a biasing spring having one end fixed to the base and the other end biasing the slider downward; A swing arm pivotally supported by the slider so as to swing toward the lowering window side; a horizontal guide portion that guides the swing end of the swing arm to move horizontally toward the lowering window in response to the descent of the slider; a receiving portion provided at a lower end of the descending window and having a recess formed therein for positioning the descending window in a closed state by fitting the swing end; A drop window fixing structure comprising:

2. a frame that holds the slider so as to be vertically movable and in which the horizontal guide portion is formed; A roller that constitutes the swing end of the swing arm and is journaled in parallel with the swing axis direction; a rotation shaft that supports the roller and has at least one end guided in the horizontal direction by the horizontal guide portion; The drop window fixing structure according to claim 1, further comprising:

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