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 pin receiving part 1b provided on a bottom edge 101 of a descending window 100; and a pressing part 1a provided to face the pin receiving part 1b. The pressing part 1a has a mounting seat 4 that can be mounted on a structure expanding vertically inside a storage wall 102. A threaded groove into which a screw-in type plunger 2 is screwed in the center is formed in the mounting seat 4. The plunger 2 is arranged so that a pin 2a side is faced towards the pin receiving part 1b side. A convex structure is formed in the mounting seat 4 towards the pin receiving part 1b side so as to form a space capable of storing a loosening prevention nut 6 that prevents loosening of the plunger 2. The pin receiving part 1b has an inclination part 1b1 inclining downward towards the pressing part 1a side, and a recess part 1b2 with which the pin 2a of the plunger 2 can engage is formed below the inclination part 1b1.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a drop window, and more particularly to a drop window fixing structure that stably fixes a drop window of a railway vehicle in a closed state. [Background technology]

[0002] A drop window is known for use as a side window for railway vehicles, with a lifting mechanism at the bottom that applies an upward biasing force. Figure 6 shows a conventional drop window 100 equipped with a balancer 103 (balancing device) as the lifting mechanism. When this drop window 100 is opened, a moderate upward biasing force is applied by the balancer 103, so the user does not need to support the entire weight of the window as with a drop window, and the window can be opened and closed safely and smoothly.

[0003] The balancer 103 described above acts as an auxiliary when the drop window 100 is in the middle of the opening / closing range, and in order to maintain the drop window 100 completely closed, another structure for fixing the closed state is required. Therefore, the drop window 100 equipped with the conventional balancer 103 is provided with a downward stop structure 120 (fixing structure) to prevent the drop window 100 in the closed state from naturally descending due to vibration of the vehicle body, etc.

[0004] 7 is a cross-sectional view of the downward stop structure 120 taken along line VII-VII in FIG. 6. A pin receiver 120b is provided at the lower end 101 of the downward window 100. A plunger 122 is provided facing the pin receiver 120b on the vehicle interior side of the downward window 100 within the housing wall 102 that houses the open (lowered) downward window 100. 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 with the lower end side of this inclined surface. When the downward window 100 is closed, the pin 122a of the plunger 122 slides against the inclined surface of the pin receiver 120b and engages with the lower end, thereby fixing the downward window 100 in the closed state.

[0005] A conventional drop window equipped with a balancer is disclosed in Patent Document 1.

[0006] Incidentally, the above-mentioned downward stop structure 120 is provided with an adjustment mechanism to absorb the effects of variations in each downward window 100. In the configuration of FIG. 7, it is possible to finely adjust the position of the plunger 122 relative to the pin receiver 120b by inserting the liner 121 between the plunger 122 and the mounting seat 123. As described above, the downward stop structure 120 of the downward window 100 is composed of the pin receiver 120b and the pressing portion 120a, and this pressing portion 120a is composed of the plunger 122, the mounting seat 123, and the liner 121. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2021-084519 Summary of the Invention [Problem to be solved by the invention]

[0008] However, it is rare that the thickness of the liner 121 is perfectly matched to the required adjustment amount, and the closest dimension is selected. This may result in subtle differences in the operational feel depending on the installation location.

[0009] In the case of the configuration shown in Fig. 7, the plunger 122 is attached from inside the vehicle. Specifically, the plunger 122 is attached to the window 100 from the fully closed state by a specified force so that the lock state is released when the window 100 is pulled down slightly from the fully closed state. The Inner 121 needs to be inserted and removed multiple times to make adjustments, which is a heavy workload.

[0010] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a drop window fixing structure that allows fine adjustments to be made individually to the drop windows and that can reduce the amount of time required for the work. [Means for solving the problem]

[0011] In order to achieve the above-mentioned object, the drop window fixing structure of the present invention is a drop window fixing structure that fixes a drop window in a closed position, and is characterized in that it comprises a screw-in type plunger installed with its pin side facing the drop window, a mounting seat into which the plunger is screwed, and a pin receiving portion provided at the lower end of the drop window and having a recess that positions the drop window in a closed state by fitting the pin into it.

[0012] In addition to the above configuration, the drop window fixing structure of the present invention is characterized in that it is provided with an anti-loosening nut that is fastened to the plunger screwed into the mounting seat from the side opposite the pin. Effect of the Invention

[0013] As described above, according to the present invention, the fitting depth of the pin of the plunger in the pin receiving portion and the magnitude of the biasing force can be finely adjusted steplessly by threading the plunger forward and backward.

[0014] Furthermore, according to the present invention, in addition to the above effects, during the adjustment stage of the drop window, an anti-loosening nut is tightened on the plunger, which has been provisionally aligned, in a direction that advances it toward the pin receiving portion, so that the anti-loosening work can be performed reliably to prevent the plunger from coming off the pin receiving portion. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a front view of a descending window equipped with the descending window fixing structure of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II in FIG. [Diagram 3] 1A and 1B show the pressing portion of the drop window fixing structure, where FIG. 1A is a perspective view of the pin side and FIG. [Figure 4] 1A and 1B show the pressing portion of the drop window fixing structure, with FIG. 1A being an exploded perspective view of the pin side and FIG. [Diagram 5]4A is a cross-sectional view showing the operation of the drop window fixing structure, in which (a) is the stage of attaching the plunger, (b) is the stage where the plunger has been temporarily fixed, and (c) is the state where it has been permanently fixed by the anti-loosening nut. [Figure 6] FIG. 1 shows a drop window equipped with a conventional balancer. [Figure 7] 7 is a cross-sectional view showing the downward stopper structure taken along line VII-VII in FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drop window fixing structure according to an embodiment of the present invention will now be described with reference to the drawings.

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

[0018] A balancer 103 for reducing the weight of the drop window 100 is provided inside the storage wall 102 in which the drop window 100 is stored when open. A drop window fixing structure 1 for fixing the drop window 100 in the closed state is provided near the balancer 103 and on the lower end side of the drop window 100.

[0019] While the width of the vehicle body is limited, the space in the housing wall 102 in the vehicle width direction is limited in order to expand the interior space of the vehicle. For this reason, the vehicle must be able to withstand a heavy load while still having a relatively compact structure. A fixing structure capable of generating sufficient force to stably support the lowered window 100 is desired.

[0020] FIG. 2 is a cross-sectional view taken along line II in FIG.

[0021] As shown in Figure 2, the drop window fixing structure 1 of the present invention is composed of a pin receiving portion 1b provided at the lower end 101 of the drop window 100, and a pressing portion 1a provided in a position capable of opposing this pin receiving portion 1b.

[0022] The pressing portion 1a has a mounting seat 4 that can be attached to a member extending in the vertical direction inside the containing wall 102. In the center of this mounting seat 4, a screw-in type plunger 2 is screwed with a pin 2a toward the pin receiving portion 1b.

[0023] On the other hand, the pin receiving portion 1b is formed with an inclined portion 1b1 that is inclined downward toward the pressing portion 1a. Also, below the inclined portion 1b1, a recess 1b2 is formed with which the pin 2a of the plunger 2 can be engaged. Fig. 2 shows a state in which the pin 2a is engaged with the recess 1b2, i.e., a state in which the descending window 100 is fixed in the closed position.

[0024] FIG. 3 shows only the pressing portion 1a of the drop window fixing structure 1, where (a) is a perspective view seen from the pin 2a side of the plunger 2, and (b) is a perspective view seen from the locking nut 6 side.

[0025] The mounting seat 4 of the pressing part 1a is formed in a rectangular plate shape with a rectangular convex structure protruding in one direction at the center and a rectangular space formed on the other side. The center of the convex structure has a cylindrical thick portion. A screw groove is formed on the inside of this cylindrical thick portion for screwing the plunger 2. In FIG. 3(a), it can be seen that the pin 2a of the plunger 2 is screwed toward the convex side of the mounting seat 4.

[0026] 3(b) shows the locking nut 6 fastened to the plunger 2. The rectangular space of the mounting seat 4 described above is large enough to accommodate the locking nut 6 and to allow the locking nut 6 to be fastened.

[0027] Fig. 4 shows an exploded state of the pressing part 1a in Fig. 3. Fig. 4(a) is an exploded perspective view seen from the convex structure side of the mounting seat 4, and (b) is an exploded perspective view seen from the rectangular concave structure side of the mounting seat 4. The plunger 2 in the configuration according to this embodiment is a set screw type screw-in type plunger 2, and can be screwed into the mounting seat 4 from either the front or back side.

[0028] Fig. 5 is a diagram for explaining a method for adjusting the pressing portion 1a. Fig. 5(a) shows the process of temporarily fixing the plunger 2 from the side opposite to the pin receiving portion 1b. Fig. 5(b) shows the temporarily fixed state in which the pin 2a is engaged with the recess 1b2 of the pin receiving portion 1b. Fig. 5(c) shows the process of permanently fixing the temporarily fixed plunger 2 of Fig. 5(b) with an anti-loosening nut 6.

[0029] In the configuration according to this embodiment, the distance to pin receiver 1b is adjusted by inserting a rotary tool into a hexagonal hole formed on the side opposite pin 2a. Since pin receiver 1b is provided beyond housing wall 102 (see FIG. 2) to which mounting seat 4 is fixed, it is not possible to perform subtle position adjustments by visually observing the pin 2a side.

[0030] However, in the configuration according to the present embodiment, a screw-in type plunger 2 is used, so it is possible to adjust the position where the appropriate pressure is applied while checking subtle changes in resistance with the sense of touch. Accurate torque control is also possible by using a torque driver, etc. In the temporarily fixed state of Fig. 5(b), pressure is applied from the plunger 2 side to the pin receiving portion 1b to the extent that the descending window 100 (see Fig. 2) does not fall. Therefore, a reaction force is generated between the thread groove of the mounting seat 4 and the plunger 2, and the temporarily fixed state is stable even if the rotating tool is removed from the plunger 2.

[0031] In FIG. 5(c), the locking nut 6 is fastened to the plunger 2 that has been provisionally fixed in a state in which the different variations in each of the descending windows 100 can be absorbed and exactly the same operational feel can be obtained.

[0032] 5, the locking operation is performed from the side opposite to the pin 2a of the plunger 2. In other words, the locking nut 6 is fastened by rotating it in the same direction as the plunger 2, so even if the plunger 2 is not fixed so as to prevent rotation, it is possible to accurately fasten the nut while maintaining the provisionally fixed state without loosening.

[0033] In addition, in the configuration according to this embodiment, the locking nut 6 is housed in a rectangular space formed in the mounting seat 4, preventing interference with other work. Thus, according to the present invention, pin receiving portion 1b can be positioned and adjusted efficiently and accurately from a position where it cannot be seen.

[0034] The configuration of the above embodiment is one example of the present invention, and the following modified examples are also included in addition to the above-mentioned configuration.

[0035] (1) In the above embodiment, a rectangular space capable of accommodating the locking nut 6 is formed in the mounting seat 4. However, such a structure having a convex shape toward the pin receiving portion 1b is not essential. The mounting seat 4 may be flat as long as it is configured to stably mount the screw-in type plunger 2.

[0036] (2) In the above embodiment, a configuration in which the locking nut 6 is used to prevent the plunger 2 from loosening from the mounting seat 4 has been described as an example. However, a configuration using such a locking nut 6 is not essential in a minimum configuration. For example, instead of using the locking nut 6, a configuration in which the plunger 2 is bonded to the mounting seat 4 may be used. [Industrial Applicability]

[0037] The structure for fixing a lowered window of the present invention is suitable for use in a vehicle, and is therefore useful not only in railroad cars but also in large vehicle bodies such as buses. [Explanation of symbols]

[0038] 1 Drop window fixing structure 1a Pressing part 1b Pin receiving part 1b1 Slope 1b2 Recess 2 Plunger 2a pin 4 Mounting base 6 Locking nut 100 Drop window 101 Bottom end 102 Containment Wall 103 Balancer 120 Downward stop structure 120a Pressing part 120b Pin receiver 121 Liner 122 Plunger 122a Pin 123 Mounting seat

Claims

1. A drop window fixing structure for fixing a drop window in a closed position, A screw-in type plunger is installed with a pin side facing the drop window; a mounting seat into which the plunger is screwed; a pin receiving portion provided at a lower end of the lowering window and having a recess formed therein for positioning the lowering window in a closed state by fitting the pin; A drop window fixing structure comprising:

2. 2. The drop window fixing structure according to claim 1, further comprising an anti-loosening nut that is fastened to the plunger screwed into the mounting seat from the side opposite the pin.

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