JPH0142373Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention mainly relates to a guide device for a foldable inspection cover that is openable and closable in a device box such as a control device mounted on a railway vehicle.

[Technical background of the invention]

Generally, control devices installed under the floor of railway vehicles are housed in equipment boxes to protect their internal equipment, but in order to allow workers to inspect and repair internal equipment during periodic inspections, An inspection cover is provided on the front of the device box so that it can be opened and closed.

By the way, the space around the control equipment installed under the floor of a railway vehicle is narrow, and the opening space for the inspection cover is often limited. Foldable types are used that are connected through the cable.

FIGS. 1 to 5 show a conventional example of a folding inspection cover consisting of four pieces. To briefly describe its structure, four cover plates 2 close the front open surface of the equipment box 1. , 3, 4, and 5 are connected to each other by a pair of upper and lower hinges 6, 6 so that they can be folded into a bellows shape and overlapped, or conversely unfolded in parallel on the same surface. . The cover plate 5 on the right side in the figure is rotatably connected and supported by the brackets 7, 7 protruding from the right side top and bottom of the device box 1 at the upper and lower parts thereof via hinges 8, 8, and conversely on the left side in the figure. The end cover plate 2 can be attached to and removed from the left side of the device box 1 by means of a locking mechanism (not shown) which is linked to the rotation of a lock lever 9 on the front surface at its left-side intermediate portion. Note that reference numerals 10 and 10 are handle holes provided in the centers of the first and third cover plates 2 and 4 in order from the left side. Further, a guide device is provided to guide and support the opening/closing operation of the folding inspection cover. This guide device consists of upper and lower guide rails 11, 11 attached to the upper and lower ends of the front surface of the equipment box 1 from the left and right, respectively, and the left sides of the first and third cover plates 2, 4 from the left side. Hinges 12, 12 provided at the upper and lower ends, respectively, and three rollers 1 each rolling into the guide rail 11 via roller receivers 13 on each hinge 12.
4, 15, and 16.

When opening the inspection cover, rotate the lock lever 9 from the state shown in FIG.
Put your hands on the handle holes 10 and 10 and follow the arrows in Figure 2.
While pulling forward as indicated by P ₁ and P ₂ , push it to the right as indicated by arrow P ₃ . With this, each cover plate 2,
The upper and lower guide rails 11, 11 are folded mutually into a bellows shape through each hinge 6...
They are all guided to the right side so that they overlap and open.

(Problems in the background art) By the way, the conventional folding cover guide device described above has three hinges attached to the hinges 12 attached to the upper and lower parts of each of the first and third cover plates 2 and 4 from the left. In other words, as shown in FIGS. 3 to 5, a roller receiver 13 is attached to the vertical pin 12a of the hinge 12, and the hinge pin 12a is attached to the left end of the roller receiver 13. The rollers 14 are provided with their axes parallel to each other, and the roller receivers 13 are also provided with their axes parallel to each other.
A roller 16 is provided at the right end of the
A roller 15 is provided between the rollers 14 and 16 in a direction perpendicular to the axis thereof, and the rollers 14 and 1
5 and 16 are in rolling contact with the inner surface of the guide rail 11. Therefore, the number of rollers is large, making parts management and assembly troublesome, and the configuration of the roller receiver 13 becomes complicated because three rollers are installed side by side, resulting in problems that lead to high costs. Furthermore, the roller receiver 13 has a large width in the left and right directions, which obstructs the folding and opening of the inspection cover, making it impossible to fold the cover plates into a state in which they are completely overlapped, making it impossible to fully open the inspection cover.

[Purpose of the invention] This invention was devised in view of the above circumstances; it has a simple configuration, a small number of parts, is easy to manufacture and assemble, and can reduce costs, while also exhibiting functions that are almost the same as conventional ones. This eliminates vertical and front-back misalignment of the cover and provides reliable guidance for opening and closing operations.Furthermore, it does not interfere with the folding and overlapping of the cover, making it possible to maximize the degree of opening. An object of the present invention is to provide a guide device for a foldable inspection cover.

[Summary of the idea]

The guide device for the foldable inspection cover of this invention has one roller attached to each vertical pin of the hinge attached to the upper and lower parts of the inspection cover via a roller holder so that its axis is perpendicular to the central axis of the pin. A sliding fitting portion is provided on the inner surface of the upper and lower guide rails in the longitudinal direction to prevent the inspection cover from shifting in the vertical and longitudinal directions by slidingly fitting with the rollers on the upper and lower sides of the inspection cover.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 6 and 7. The overall installation arrangement of the folding inspection cover is the same as that shown in Figures 1 and 2, so it is not shown, and the same components as shown in Figures 1 to 5 are given the same reference numerals. We will try to simplify the explanation. However, Figures 6 and 7
The figure shows the upper part of the left end of the first cover plate 2 from the left side of the foldable inspection cover in Figure 1, and shows the rotatable vertical position of the hinge 12 attached to the upper corner of the cover plate 2. A roller receiver 17 is provided at the upper end of the pin 12a. This roller receiver 17 is 1
It is a U-shaped rectangular piece that can attach only one roller 18 by a shaft pin 19, and is attached directly above the hinge pin 12a, so that the center axis of the shaft pin 19 is the same as that of the one roller 18. It is supported perpendicularly on the central axis of 12a. On the other hand, the upper guide rail 20 in which the roller receivers 17 and rollers 18 are housed has a U-shaped cross section and is attached to the front surface of the device box 1 in the longitudinal direction so as to open downward. A recessed groove 21 is formed in the longitudinal direction as a roller sliding fitting part in the inner surface of the top plate part 20a, that is, in the center of the lower surface of the top plate part 20a, and the peripheral part of the roller 18 is slidably fitted into the recessed groove 21 with almost no gap. It is designed to roll in the longitudinal direction (left and right). Although not shown, a hinge, one roller, and a grooved guide rail are also provided at the lower end of the cover plate 2 in exactly the same manner as described above, although they are upside down.

Therefore, if the guide device has the above configuration,
Only one roller 18 on the upper and lower sides is provided for the upper and lower guide rails 20, but the rollers 18 on the upper and lower sides slide into the grooves 21 formed on the inner surface of the upper and lower guide rails 20, and the rollers 18 in the longitudinal direction ( Since the cover plate 2 can only roll in the left-right direction and is prevented from moving in other directions, the cover plate 2 is prevented from shifting in the vertical and front-back directions, and can be rotated in the left-right direction while rotating via the hinge 12. Since the roller receivers 17 that support each roller 18 are rectangular in shape, each cover plate can be folded and overlapped completely when opened, allowing for a wide opening. becomes.

In addition, in the above embodiment, the grooves 21 and the rollers 18 of the guide rail 20 are as shown in FIG.
The groove 21A may have a substantially V-shaped cross section, and the convex roller 18A may be slidably fitted into the groove 21A, and the same effect as described above can also be obtained.

Further, FIGS. 9 and 10 show a further different embodiment, in which a roller 22 having a V groove 22a on the outer peripheral surface like a V pulley is attached to the roller receiver 17 via a shaft pin 19. Guide rail 20
A protrusion 23 protruding in a V-shaped cross section as a roller sliding fitting part is formed in the longitudinal direction on the inner surface of the roller 22 so that the roller 22 slides into the V groove 22a and rolls on the protrusion 23. This is the configuration. Even in this case, the same effects as those of the above embodiment can be obtained. In addition, the protrusions 23 function as reinforcing ribs to increase the strength of the guide rail 20, which allows the guide rail 20 to be made thinner, thereby contributing to weight reduction.

[Effect of idea]

Since this idea was made as described above, the hinge 1
Only one roller is required per location, and the number of parts is small.
In addition, the roller receiver is small and simple in shape, making it easier to manufacture and
It is easy to assemble, reduces costs by reducing weight and saving materials, and not only does it perform the same functions as conventional models, providing reliable guidance and support for the cover, but it also allows the cover to be completely folded and superimposed. It is extremely practical as it can be opened wide.

[Brief explanation of the drawing]

Fig. 1 is an overall front view showing the guide device of a conventional foldable inspection cover, and Fig. 2 is the same as Fig. 1.
3 is an enlarged front view of a portion of FIG. 1, FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 5 is a sectional view taken along the - line in FIG. 3. Figure 6 is a diagram equivalent to Figure 3 showing an embodiment of this invention;
FIG. 7 is a cross-sectional view taken along the line - in FIG. 6, FIG. 8 is a cross-sectional view of main parts showing another embodiment of this invention, and FIG.
The figure is a view corresponding to FIG. 6 showing still another embodiment of this invention, and FIG. 10 is a sectional view taken along the line - in FIG. 9. 1... Equipment box, 2, 3, 4, 5... Cover plate,
6, 8... Hinge, 7... Bracket, 9... Lock lever, 10... Mounting hole, 11, 20...
Guide rail, 12... Hinge, 12a... Pin, 13, 17... Roller holder, 14, 15, 1
6, 18, 18A, 22...Koro, 22a...
Groove, 19... Axis pin, 20a... Top plate part, 21,
21A...Sliding fit part (concave groove), 23...Sliding fit part (projection).

Claims (1)

[Claims for Utility Model Registration] (1) In a guide device for guiding and supporting the opening/closing operation of a foldable inspection cover provided on a control device box, etc. along guide rails having a U-shaped cross section that face each other at the top and bottom, One roller is installed on each of the vertical pins of the hinges attached to the upper and lower parts of the inspection cover via roller holders so that their axes are perpendicular to the central axis of the pins, and one roller is installed above and below the other. A guide for a foldable inspection cover characterized in that a sliding fitting portion is provided in the vertical guide rail in the longitudinal direction thereof to prevent the inspection cover from shifting in the vertical and longitudinal directions by slidingly fitting with the rollers. Device. (2) The guide device for a foldable inspection cover according to claim 1, wherein the sliding fitting portion is a groove formed in the inner surface of the guide rail in the longitudinal direction thereof. (3) The roller has a groove on its outer peripheral surface, and the sliding fitting portion is a protrusion that protrudes from the inner surface of the guide rail and slides into the groove of the roller, Claim 1 of the Utility Model Registration Claim Guide device for the foldable inspection cover described.