JP7430903B2 - Gutter cover removal prevention device - Google Patents

Description

TECHNICAL FIELD This invention relates to a device for preventing a road groove, particularly a groove cover that closes a drainage basin, from coming off the groove.

Drainage ditches on roads such as expressways, especially drainage basins, are generally closed with ditch covers. When the grating lid is closed with a non-metallic grating lid such as FRP, there is a risk that when a vehicle passes over the grating lid, the grating lid may jump up and hit people or objects. In order to eliminate such problems caused by the grating lid coming off from the groove, devices for fixing the grating lid to the groove (road drainage outlet) have already been publicly known, as shown in Patent Document 1 and Patent Document 2. It has become.

To give an overview of the "device for preventing grating from coming off for road drains" disclosed in Patent Document 1, a pair of slips are supported so as to be slidable in a substantially horizontal direction on the bottom surface of a grating lid installed in the opening frame of a road drain. A locking slide rod, a rotating arm capable of sliding these pair of retaining slide rods in mutually opposite directions, a rotation axis provided at the rotation center of the rotation arm, and a rotation operation. It is equipped with a holding device that regulates the rotational movement of the shaft. Then, by inserting a dedicated operating rod into the hole-shaped operating rod connection part of the holding device and rotating it, the rotating operation shaft rotates in conjunction with it to operate the rotating arm, which in turn causes the slide rod to slide. , it is possible to fix the grating cover to the road drain by inserting it into a hole provided in the inner wall of the road drain.

Next, to give an overview of the "grating with flip-up prevention mechanism" disclosed in Patent Document 2, there is a disc-shaped cam provided with an arcuate or spiral guide groove on the back surface of the grating lid body, and a grating that is guided by the guide groove. The device is equipped with a flip-up prevention mechanism that has a holding pin whose tip can freely protrude outward, and by rotating the disc-shaped cam, the holding pin protrudes toward the inner wall of the groove and is held. The grating lid can be fixed to the groove by fitting the tip of the pin into the hole formed in the groove.

Japanese Patent Application Publication No. 2001-40754 JP2016-23473A

The detachment prevention device shown in Patent Document 1 includes a hole-shaped operation rod connection portion into which the tip of a dedicated operation rod is inserted, and an in/out cover that is pushed in when the operation rod is inserted into the hole-shaped operation rod connection portion. The holding device has a spring mechanism (not shown) built into the holding device to perform the operation of pushing the inlet/outlet cover in and returning it to its original position. ) is being used.

On the other hand, as mentioned above, the grating lid is used to exclusively close grooves, etc., into which road dust, rainwater, garbage, etc. are likely to be fed, and the hole-shaped operation rod connection part is opened on the top surface of the holding device. are doing. Furthermore, there is a gap between the main body of the holding device and the access lid. Therefore, in the structure of the holding device shown in Patent Document 1, dust, dirt, and rainwater can enter the holding device through the hole-shaped operation rod connection part through the gap between the inlet/outlet cover and the like, causing clogging and rust. As a result, the spring mechanism within the holding device becomes inoperable, resulting in the inconvenience that the access cover cannot be pushed in and, as a result, the rotating arm of the locking device cannot be operated. In order to prevent dust, dirt, and rainwater from entering the holding device through such a hole-shaped operation rod connection portion, Patent Document 1 discloses that a slide lid is attached to open and close the hole-shaped operation rod connection portion. There is. However, the number of parts increases due to the sliding lid, and if you forget to block the hole-shaped operation rod connection part with the slide lid, dust, dirt, and rainwater can enter the holding device through the hole-shaped operation rod connection part. It will be put away.

In this regard, the flip-up prevention mechanism shown in Patent Document 2 is such that by rotating a disc-shaped cam, a protrusion protruding downward from the middle of a rod-shaped holding pin is displaced within the guide groove of the disc-shaped cam. , in which the holding pin protrudes toward the inner wall of the groove or is retracted away from the inside of the groove, allowing the holding pin to be inserted into and taken out from the hole in the groove. Therefore, there is no need for a configuration in which the operating rod is inserted into a hole-shaped operating rod connecting portion. Moreover, in the flip-up prevention mechanism of Patent Document 2, even if the disc-shaped cam has a guide groove that opens upward, the disc-shaped cam is housed in the box. Therefore, it is understood that the flip-up prevention mechanism of Patent Document 2 is less likely to cause malfunctions due to sand and dirt entering the device than the detachment prevention device of Patent Document 1.

However, since the flip-up prevention mechanism of Patent Document 2 uses a disk-shaped cam with a relatively large surface area, the space required to install the flip-up prevention mechanism on the back surface of the grating lid also increases. Therefore, a problem arises in that many spaces between the gratings of the grating lid are blocked by the flip-up prevention mechanism. Further, the structure of the flip-up prevention mechanism of Patent Document 2 cannot be easily replaced with a holding device such as the detachment prevention device of Patent Document 1.

The present invention has a structure that takes into account the external environment in which a gutter cover that blocks a drainage basin on a road is placed, thereby increasing the reliability of the operation, and also considering the possibility of replacing the gutter cover with an existing device. The purpose is to provide a prevention device.

In order to achieve the above object, the gutter cover detachment prevention device of the present invention prevents a gutter cover for closing a groove formed by opening upward onto a road from coming off from the groove. The device includes two slip-out prevention devices that are arranged in parallel to a surface of a portion of the groove lid that faces the bottom surface of the groove portion, and that slide along a surface of the portion of the groove lid that faces the bottom surface of the groove portion. a slide control device configured to supply power to which the rotation of the operating rod is transmitted to cause the two slide members to slide in mutually opposite directions, and to regulate the slide; a connecting member that connects the slide control device; and a support member that is disposed on a surface of the groove cover that faces the bottom surface of the groove and supports the slide member; A first connection portion for connection to a control device, a second connection portion for connection to one of the two slide members, and a second connection portion for connection to the other of the two slide members. The first connection part is located between the two second connection parts, and an end of the first connection part and an end of the one second connection part, and an end of the first connecting portion and an end of the other second connecting portion are connected by connecting portions, and the slide control device includes a substrate attached to the groove lid and a lid portion on the substrate side. an outer cylinder configured to have a cylinder body with a lid, and an operation rod connection part in the form of a through hole into which the operation rod is inserted into the lid; and an operation rod connection part of the outer cylinder; It is formed into a cylindrical body having a through hole that communicates with the board and has a portion into which the operating rod can be inserted into the outer cylinder. An inner cylinder arranged to be rotatable, a cylinder main body with a bottom, and a mounting part formed to protrude outward from the bottom of the cylinder main body and have a discharge port communicating with the cylinder main body. an intermediate cylinder that is arranged between the outer cylinder and the inner cylinder and rotates in both directions together with the inner cylinder within a predetermined range around the operating rod connection part; a rod-shaped rotation regulating member disposed between the cylinder and the inner cylinder, and one longitudinal end of one of the two slide members is axially connected to a second connecting portion of the one of the connecting members. one end of the other of the two slide members in the longitudinal direction is connected to the other second connection portion of the connection member via a shaft member , and one of the intermediate cylinders of the slide control device A mounting portion is attached to the first connection portion of the connection member, and rotation of the intermediate cylinder is transmitted from the connection member to the two slide members via the shaft member, so that the two slide members The outer cylinder is slidably oscillated in opposite directions about the shaft member, and a first recessed part is formed in the cylinder body of the outer cylinder and opens toward the intermediate cylinder and extends in the axial direction. A notch is formed in the cylinder body, a second recess is formed in the inner cylinder that opens toward the intermediate cylinder and extends in the axial direction, and the rotation regulating member is connected to the first recess. By displacing between the space formed by the notch and the space formed by the second recess and the notch, rotation of the intermediate cylinder is permitted and rotation is restricted. (Claim 1). A road means, for example, a road on which a car can travel. Among the grooves, drainage basins in particular are subject to being blocked by groove covers. The groove cover is called a grating cover or a grating if it is formed by intersecting plate-shaped parts on the cover body.

According to such a device for preventing the groove cover from coming off, the groove cover is released from being held by the sliding member for preventing it from coming off within the space formed by the first recess of the outer cylinder and the notch of the intermediate cylinder. By positioning the rotation regulating member, the outer cylinder and the intermediate cylinder are fixed, and only the inner cylinder is rotatable, and from a state where the sliding movement of the slide member is restricted, only the inner cylinder can be rotated in a predetermined direction. By rotating it to the first predetermined angle (for example, a 45 degree angle) and then trying to rotate it beyond the first predetermined angle, the intermediate cylinder will also try to rotate together with the inner cylinder, so the rotation restriction The member is pushed by the inner circumferential surface and peripheral edge of the first recess of the outer cylinder, and the member is pushed out of the intermediate cylinder from within the space formed by the first recess of the outer cylinder and the notch of the intermediate cylinder. The slide member is displaced into the space formed by the notch and the second recess of the inner cylinder, and the restriction on the sliding movement of the slide member is released. Furthermore, by rotating the inner cylinder in a predetermined direction at a second predetermined angle (for example, an angle of 90 degrees) in addition to the first predetermined angle, the intermediate cylinder also rotates in the predetermined direction together with the second predetermined angle. This is done by rotating a predetermined angle and sliding a slide member connected to the intermediate cylinder via a connecting member. In order to hold the groove cover with the slide member for preventing detachment of the detachment prevention device, the procedure and operation are reversed to those described above.

By having a device for preventing the groove cover from coming off with this structure, even if dust, dirt, or rainwater enters from the connection part of the operating rod of the outer cylinder of the slide control device, the gap between the intermediate cylinder, the outer cylinder, and the inner cylinder is protected. There are no gaps between the outer cylinder and the intermediate cylinder, and dust, dirt, and rainwater are discharged from the outlet on the protruding part of the intermediate cylinder through the through hole in the inner cylinder. Since it does not enter between the cylinder and the cylinder, it does not interfere with the rotation of the intermediate cylinder or the inner cylinder.

Further, since the substrate of the slide control device may be any substrate to which the outer cylinder is fixed, the substrate can be used in common with the substrate of the conventional holding device. Furthermore, the protruding part of the intermediate cylinder of the slide control device can be made to have the same shape as the protruding part that connects with the connecting member of the conventional holding device, so that the connecting member can be shared and the connecting member can be prevented from coming off. It is also possible to standardize the slide members for use. Furthermore, the operating rod that is inserted into the operating rod connection part of the outer cylinder and the part of the through hole in the inner cylinder on the board side can also be used in common with the operating rod that is inserted into the operating rod connection part of the conventional holding device. be.

As described above, according to the present invention, even if dust, dirt, or rainwater enters from the operating rod connection part of the outer cylinder of the slide control device, there is no gap between the intermediate cylinder, the outer cylinder, and the inner cylinder. Dust, dirt, and rainwater are discharged to the outside through the through hole in the inner cylinder and from the outlet in the protruding part of the intermediate cylinder. Since there is no intrusion between the cylinders, the rotation of the intermediate cylinder and the inner cylinder is not hindered. For this reason, the gutter cover is placed in an external environment where it exclusively blocks the gutter where road dust, rainwater, garbage, etc. are likely to be fed, and the operating rod connection part of the outer cylinder opens on the top surface of the holding device. Even so, it is possible to increase the reliability of the operation of the slide control device.

Moreover, since the board of the slide control device only needs to satisfy the function of fixing the outer cylinder and attaching it to the groove cover, it can be used in common with the board of the conventional sliding holding device. Furthermore, since the protruding part of the intermediate cylinder of the slide control device can be made to have the same shape as the protruding part that connects with the connecting member of the conventional sliding holding device, it is possible to standardize the connecting member and the slide member for preventing slippage. be able to. Furthermore, the operating rod that is inserted into the operating rod connection part of the outer cylinder and the part of the through hole of the inner cylinder on the side of the outer cylinder on the board side is also the same as the operating rod that is inserted into the operating rod connection part of the conventional sliding type holding device. It is possible to convert Therefore, the slide control device can also be used as a substitute for an existing slide-type holding device.

FIG. 3 is a sectional view of a groove cover and a groove portion to which the present invention is applied. FIG. 2 is an exploded view of a slide control device that is a main part of the present invention. FIG. 3 is an explanatory diagram of an outer cylinder that is a component of the slide control device, in which (a) is a front view of the outer cylinder, (b) is a side view of the outer cylinder, (c) is a rear view of the outer cylinder, and (d) is a rear view of the outer cylinder. It is a perspective view of an outer cylinder. FIG. 4 is an explanatory diagram of an intermediate cylinder that is a component of the slide control device, in which (a) is a front view of the intermediate cylinder, (b) is a side view of the intermediate cylinder, (c) is a rear view of the intermediate cylinder, and (d) is a It is a perspective view of an intermediate cylinder. FIG. 2 is an explanatory diagram of the inner cylinder, which is a component of the slide control device, in which (a) is a front view of the inner cylinder, (b) is a side view of the inner cylinder, (c) is a rear view of the inner cylinder, and (d) is a It is a perspective view of an inner cylinder. It is an explanatory view of a state in which the groove cover is held by the detachment prevention device, (a) is a view of the groove cover held by the sliding member of the detachment prevention device viewed from the back side, and (b) is a diagram showing the groove cover being held by the detachment prevention device. (c) is a cross-sectional view of the outer cylinder, intermediate cylinder, and inner cylinder when viewed from above in a state in which the intermediate cylinder is free from rotation; It is a diagram. It is an explanatory diagram showing an intermediate state between a state in which the groove cover is held by the detachment prevention device and a state in which the groove cover is released from being held. A diagram of the groove cover in an intermediate state between the released state and the released state as seen from the back side, and (b) a cross-sectional view of the outer cylinder, intermediate cylinder, and inner cylinder in the intermediate state as seen from above. FIG. 3 is an explanatory diagram showing a state in which the groove cover is released from being held by the detachment prevention device, (a) is a view of the groove cover seen from the back side with the groove cover released from being held by the slide member, and (b) is a view showing the groove FIG. 2 is a cross-sectional view of the outer cylinder, intermediate cylinder, and inner cylinder, viewed from above, with the lid released. FIG. 2 is a developed view of a specific example of a structure for regulating the rotation angle between an inner cylinder and an intermediate cylinder of the slide control device, which is a main part of the present invention. (a) is a sectional view from above of the outer cylinder, intermediate cylinder, and inner cylinder with the groove cover held by the slide control device shown in Fig. 9, and (b) is a state in which the restriction on rotation of the intermediate cylinder is released. FIG. 3(c) is a sectional view of the outer cylinder, intermediate cylinder, and inner cylinder viewed from above, and (c) is a cross-sectional view of the outer cylinder, intermediate cylinder, and inner cylinder when the groove cover is released from being held by the slide control device. It is a diagram.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 8, a gutter cover removal prevention device is shown as an example of an embodiment of the present invention.

The gutter 100 to which the gutter cover 1 of FIG. 1 is applied is a gutter for drainage of roads such as expressways, and is also a drainage basin (also referred to as a catchment basin), but this gutter is not necessarily a gutter. It is not limited to the drainage basin area. The groove portion 100 is a groove portion that can be closed by the groove cover 1.

As described above, the groove portion 100 shown in FIG. 1 is a part of a drainage basin in a road drainage ditch, and is located at the end of a protruding part 102 (not shown) extending downward from the bottom surface 101a of the basin body 101. Drain pipe is connected. An opening frame member 200 is attached to the opening side of the groove portion 100 above the box body 101.

The opening frame member 200 includes a base portion 201 formed in an annular shape that opens in the vertical direction when attached to the cell main body 101, and an insertion portion 202 that extends in the axial direction from the base portion 201 and is inserted into the cell main body 101. , a protrusion 203 that extends inward from the insertion portion 202 and engages with a sliding member 2 for preventing the groove cover 1 from coming off, which will be described below; It has a flange portion 204 in which a mounting hole 205 communicating with the mounting hole 103 is formed. After assembling the opening frame member 200 into the groove part 100 so that the mounting hole 205 of the flange part 204 communicates with the mounting hole 103 of the box body 101, fixing tools such as bolts ( (not shown), the opening frame member 200 is fixed to the groove 100.

In this embodiment, as shown in FIGS. 1 and 6 to 8, the groove cover 1 includes a plurality of plate-like parts 1a arranged in parallel and a frame body 1b surrounding these plate-like parts 1a. At least configured. Each plate-like portion 1a has a rectangular flat cross section with a vertical width larger than a horizontal width. Although not shown, the groove lid 1 generally has a structure of a grating lid in which the plate portions are combined in a lattice shape by further having a plate portion that intersects with the plate portion 1a. In this embodiment, in order to further prevent the groove cover 1 from coming off, two plate-shaped protrusions 1c extending downward from the frame body 1b are provided along the longitudinal direction of the groove cover 1.

The groove cover removal prevention device to which the present invention is applied includes a pair of slide members 2, 2 for preventing removal, which are respectively assembled to a slide control device 6 via a connecting member 3, and each slide member 2 is attached to the groove cover. It is configured to be supported by a support member 5 so as to move along the lid 1. That is, the slide control device 6 supplies power for the slide members 2, 2 to slide in mutually opposite directions and regulates the slide, as described below.

As shown in FIGS. 1 and 6 to 8, each slide member 2 has a plate shape that extends linearly. The slide members 2, 2 are arranged so as to extend in opposite directions on the side of the plate-shaped portion 1a of the groove lid 1 and the frame 1b facing the bottom surface 101a of the groove portion 100, and One end in the longitudinal direction is connected to the connecting member 3 via a shaft member 4, and can be slidably oscillated in mutually opposite directions about the shaft member 4 as an axis.

In this embodiment, the support member 5 is composed of two substantially U-shaped frames 51, 51 having an opening through which the slide member 2 is inserted, and both ends of each frame 51 are connected to a predetermined plate of the groove cover 1. It is fixed to a fixing member 14 provided on a surface of the shaped portion 1a facing the bottom surface 101a of the groove portion 100. The width of the openings of the frames 51, 51 is larger than the width of the slide member 2 so that it can accommodate even if the slide member 2 swings from side to side with respect to the sliding direction. Further, the structure of the support member 5 is not limited to the above-described structure, and may be approximately L-shaped, for example, with only one end fixed to the fixing member 14 and the other end separated from the fixing member 14. .

The connecting member 3 includes a first plate-shaped connecting portion 31 for connecting to the slide control device 6, a second plate-shaped connecting portion 32 for connecting to the slide members 2, 2, and a first connecting portion 31 for connecting to the slide control device 6. The connecting portion 33 connects the end of the connecting portion 31 and the end of the second connecting portion 32. A through hole (not shown) into which a mounting portion 82 of the intermediate cylinder 8 of the slide control device 6 described below can be inserted (press-fitted) is formed in the first connection portion 31, and a through hole (not shown) is formed in the first connection portion 31. A through hole (not shown) through which the shaft member 4 is inserted is formed in the connecting portions 32, 32.

As shown in FIG. 2, a slide control device 6 to which the present invention is applied includes at least an outer cylinder 7, an intermediate cylinder 8, an inner cylinder 9, and a holding member 10. .

As shown in FIGS. 2 and 3, the outer cylinder 7 includes a base plate 71 attached to the groove lid 1, and a lidded cylinder main body 75 with a lid part 75a formed in the opening on the side of the base plate 71, The substrate 71 and the cylinder body 75 are integrally formed. In this embodiment, the substrate 71 has a square plate shape, and has a total of four through holes 72, one at each of the four corners, for attaching to the groove cover 1 via a fixing device such as a bolt or screw. There is. Each through hole 72 is a long hole so that the insertion position of the fixture can be adjusted.

The lid portion 75a has an operating rod connecting portion 76 formed in the center thereof in the form of a through hole into which the operating rod 11 shown as an example in FIG. 1 can be inserted. The operating rod 11 shown in FIG. 1 includes a handle portion 11a, a cylindrical column portion 11b extending from the handle portion 11a, and an insertion portion provided at the tip of the column portion 11b (the end opposite to the handle portion 11a). 11c. The insertion portion 11c is formed by a tip portion of the column portion 11b and two protrusions that protrude symmetrically toward the outside in the radial direction from the tip portion of the column portion 11b. Accordingly, the inner shape of the through-hole-shaped operation rod connecting portion 76 is configured to have a circular hole portion and a protruding hole portion extending symmetrically outward from the circular hole portion in accordance with the outer shape of the insertion portion 11c. It consists of

The cylinder main body 75 has a cylindrical shape with an inner space having an inner diameter that allows the intermediate cylinder 8 to be rotatably accommodated without wobbling, and has a semi-cylindrical shape that extends along the axial direction while opening on the inner circumferential side. A cylindrical depression 77 is formed. The inner diameter of the recessed portion 77 is slightly larger than the outer diameter of the rotation regulating member 10 so that half of the rotation regulating member 10 described below can be accommodated therein. In this embodiment, the recessed portion 77 is located at a position where a line connecting the recessed portion 77 and the center of the cylinder body 75 intersects at 90 degrees with a line connecting the two protruding portions of the operating rod connecting portion 76. , are formed on the cylinder body 75. In this embodiment, the recessed portion 77 reaches the opening end on the opposite side from the substrate 71.

As shown in FIGS. 2 and 3, the intermediate cylinder 8 includes a bottomed cylinder body 81 whose side opposite to the substrate 71 side of the outer cylinder 7 is closed by a bottom part 81a, and a cylinder body 81 with a bottom closed by a bottom part 81a. A mounting portion 82 is formed in a protruding manner.

The attachment portion 82 is for attaching the connecting member 3, and also functions like a cam of the link mechanism in order to transmit the rotation of the intermediate cylinder 8 to the slide members 2, 2. In this embodiment, the mounting portion 82 is approximately formed by a cylindrical pedestal portion protruding outward from the bottom portion 81a, and semi-cylindrical portions connected to both longitudinal sides of a rectangular parallelepiped further protruding from the pedestal. It has an oval or oval shaped raised part. That is, in this embodiment, the through hole 31a formed in the connecting portion 31 of the connecting member 3 has an inner shape that is substantially the same as the outer shape of the raised portion of the attachment portion 82. The mounting portion 82 is formed with a discharge port 82a having a circular inner shape. The discharge port 82a has both ends thereof open to the inner space side surface of the bottom portion 81a and the protrusion direction surface of the mounting portion 82, and when the outer cylinder 7, intermediate cylinder 8, and inner cylinder 9 are assembled, the discharge port 82a is opened. , communicates with the operating rod connecting portion 76 of the outer cylinder 7 and a through hole 91 of the inner cylinder 9, which will be described below.

The cylinder main body 81 has a substantially cylindrical shape with an inner space having an inner diameter that allows the inner cylinder 9 to be rotatably accommodated without rattling, and is oriented toward the bottom 81a from the open end opposite to the bottom 81a. A cutout 83 is formed that extends from the top. The circumferential width of the notch 83 is slightly larger than the diameter of the rotation regulating member 10 so that the rotation regulating member 10 described below can pass therethrough, and the radial width of the notch 83 is as follows. The radius is slightly larger than the radius of the rotation regulating member 10 described below so that the rotation regulating member 10 can fit into the spaces S1 and S2 formed by the recess 77 or the recess 92. By having such a configuration with the notch 83, the peripheral wall of the cylinder main body 81 has an arc shape when viewed from the axial direction.

As shown in FIGS. 2 and 5, the inner cylinder 9 is formed into a cylindrical body having a through hole 91 that communicates with the operating rod connecting portion 76 of the outer cylinder 7. In this embodiment, the through hole 91 has the same inner shape as the operating rod connecting portion 76 at the portion of the outer cylinder 7 on the substrate 71 side, but as shown in FIG. The portion opposite to 71 has the same inner shape as the outlet 82a of the intermediate cylinder 8. That is, the portion of the through hole 91 on the substrate 71 side of the outer cylinder 7 functions as an operating rod connection portion.

A recessed portion 92 is formed on the outer periphery of the inner cylinder 9. The recessed portion 92 has a semi-cylindrical recessed shape that is open toward the outer periphery and extends along the axial direction. The inner diameter of the recess 92 is slightly larger than the outer diameter of the rotation regulating member 10 so that half of the rotation regulating member 10 described below can be accommodated therein. In this embodiment, the recessed portion 92 is such that a line connecting the recessed portion 92 and the center of the inner cylinder 9 intersects a line connecting the two protruding portions of the through hole 91 at a small angle of 45 degrees. It is formed in the inner cylinder 9 so as to be in the same position. In this embodiment, the recessed portions 92 reach both ends of the inner cylinder 9 in the axial direction.

The rotation regulating member 10 has a cylindrical shape, as shown in FIG. Its axial dimension is slightly smaller than the axial dimension of the recesses 77 and 92 and the longitudinal dimension of the notch 83.

When the intermediate cylinder 8 and the inner cylinder 9 are viewed from above the groove cover 1, only the inner cylinder 9 moves clockwise at a predetermined angle ( In the rotation range (for example, 90 degrees) after the groove lid 1 is released from being held by the slide members 2, 2 after rotating about 45 degrees, the inner cylinder 9 and the intermediate cylinder 8 only rotate together. It looks like this. Furthermore, when the intermediate cylinder 8 and the inner cylinder 9 are viewed from above the groove cover 1, the intermediate cylinder 8 and the inner cylinder 9 move from the position where the holding by the slide members 2, 2 to the groove cover 1 is released. After being rotated counterclockwise by a predetermined angle (for example, 90 degrees), only the inner cylinder 9 can be rotated counterclockwise by a predetermined angle (for example, 45 degrees).

By having such a configuration of the device for preventing the groove cover from coming off, the groove cover 1 is held in such a manner that it does not come off from the groove part 100, but the held state is released and the groove cover 1 is removed from the groove part 100. In order to achieve the state shown in FIG. 6, the slide members 2, 2, the connecting member 3, and the slide control device 6 operate from the state shown in FIG. 6 to the state shown in FIG. 7, and then to the state shown in FIG.

First, in FIGS. 6(a) and 6(b), the groove cover 1 is held in the groove 100 by the slide members 2, 2, and the operating rod connecting portion 76 of the outer cylinder 7 of the slide control device 6 and the inner cylinder The slot cover is shown in a holding state in which the insertion portion 11c of the operating rod 11 can be inserted into the portion functioning as the operating rod connecting portion of the through hole 91.

Looking at the orientation of the recess 77 of the outer cylinder 7 and the through hole 91 of the inner cylinder 9 when the groove lid is held, the line connecting the center of the through hole 91 and the recess 77 of the outer cylinder 7 and the through hole A line connecting a pair of protruding parts in a part of 91 that functions as an operating rod connecting part (a part having the same inner shape as the operating rod connecting part 76) intersects at an angle of 90 degrees. In the state illustrated in FIGS. 6(a) and 6(b), the recessed portion 77 of the outer cylinder 7 is located on the side edge side of the through hole 91 where the protruding portion 1c of one groove cover 1 is located. The notch 83 of the intermediate cylinder 8 is also located on the same side as the recess 77 of the outer cylinder 7. As a result, as shown in FIG. 6(b), a space S1 is formed between the recess 77 of the outer cylinder 7 and the notch 83 of the intermediate cylinder 8, and the rotation regulating member 10 is disposed within this space S1. , the intermediate cylinder 8 is connected to the outer cylinder 7 which is in a fixed state and is in an immovable state (rotation is restricted). At this time, when viewed from above the groove cover 1, the recess 92 of the inner cylinder 9 is relative to the line connecting the center of the through hole 91 and the recess 77, as shown in FIG. 6(b). It is located about 45 degrees counterclockwise. In these states, as shown in FIG. 6(a), the longitudinal direction of the attachment portion 82 of the intermediate cylinder 8 is the portion of the through hole 91 that functions as the operating rod connecting portion (the inner shape of the operating rod connecting portion 76). It is oriented in a direction that intersects at an angle of 90 degrees with respect to a line connecting a pair of protruding parts (hereinafter referred to as a pair of protruding parts of the through hole 91).

Next, in order to release the holding state of the groove cover, the tip end 11c of the operating rod 11 is connected to the operating rod connecting portion 76 of the outer cylinder 7 and the portion of the through hole 91 of the inner cylinder 9 that functions as the operating rod connecting portion ( In this embodiment, the operating rod 11 is rotated clockwise by about 45 degrees when viewed from above the groove cover 1. Here, when viewed from the back side of the groove lid 1 in FIG. 6(a), the connecting member 3 and the attachment portion 82 of the intermediate cylinder 8 appear to rotate counterclockwise. In this rotation operation using the operating rod 11, the intermediate cylinder 8 does not rotate, and only the inner cylinder 9 rotates clockwise by about 45 degrees when viewed from above the groove cover 1. Therefore, as shown in FIG. 6(c), the recess 92 of the inner cylinder 9 is at the same position as the notch 83 of the intermediate cylinder 8 and the recess 77 of the outer cylinder 7, and these recesses 92 , an expanded space S1' formed by the notch 83 and the recess 77. Therefore, the rotation regulating member 10 can be displaced from the position where it contacts the inner circumferential surface of the recess 77 to the position where it contacts the inner circumferential surface of the recess 92 . Note that by rotating the inner cylinder 9 by about 45 degrees from the position shown in FIG. 6(b) to the position shown in FIG. 6(c), the pair of protruding parts of the through holes 91 of the inner cylinder 9 are As shown in (c), the line connecting the pair of protrusions intersects the line connecting the center of the through hole 91 and the recess 77 of the outer cylinder 7 at an angle of 45 degrees. On the other hand, since the intermediate cylinder 8 is not rotating, the slide members 2, 2 are also not moving from the state shown in FIG. 6(a).

Furthermore, by turning the operation rod 11 to release the holding state of the groove cover, the inner cylinder 9 is placed in the position shown in FIG. 6(c) (a position obtained by rotating the inner cylinder 9 by about 45 degrees from FIG. 6(b)) From the stage of clockwise rotation beyond , the intermediate cylinder 8 and the inner cylinder 9 begin to move together. Therefore, the rotation regulating member 10 is pushed by the clockwise side portion and the clockwise side peripheral portion of the inner circumferential surface of the recessed portion 77 of the outer cylinder 7, as shown in FIG. 6(c). As such, it is displaced within the space S1' from a position where it abuts the inner circumferential surface of the recess 77 of the outer cylinder 7 to a position where it abuts the inner circumferential surface of the recess 91 of the inner cylinder 9. As a result, the restriction on clockwise rotation of the outer cylinder 7 when viewed from above the groove cover 1 of the intermediate cylinder 8 is released.

Furthermore, by turning the operating rod 11 to release the holding state of the groove cover, when the groove cover 1 is viewed from above, it moves from the position shown in FIG. 6(c) to the position shown in FIG. 7(b). The inner cylinder 9 continues to rotate clockwise together with the intermediate cylinder 8. At this time, as shown in FIG. 7(b), the rotation regulating member 10 is in the space S2 formed by the notch 83 of the intermediate cylinder 8 and the recess 92 of the inner cylinder 9, and I am free from. Accordingly, as shown in FIG. 7(a), when the groove cover 1 is viewed from the back side, the connecting member 3 connected to the attachment portion 82 of the intermediate cylinder 8 rotates counterclockwise. Therefore, the slide members 2, 2 connected to the connecting member 3 via the shaft member 4 rotate in the direction of retracting inward from the side edge of the groove cover 1 (overlapping when viewed from the side) while rotating around the shaft member 4. direction). In addition, since the opening width of the frame 51 of each support member 5 in the surface direction of the groove cover 1 is larger than the width of the slide member 2 in the lateral direction, the slide member 2 is as shown in FIG. 7(a). As shown in the figure, even if the shaft member 4 is swung as a center, there is no problem in its movement.

Then, by continuing to rotate the operating rod 11, the inner cylinder 9 is rotated about 135 degrees from the rotation restriction position of the intermediate cylinder 8 shown in FIG. 6(b), and a line connecting the space S2 and the center of the through hole 91 As shown in FIGS. 1, 8(a), and 8(b), the groove cover 1 is released from the state of being held in the groove portion 100 by the slide members 2, 2.

That is, as shown in FIG. 8(a), the mounting portion 92 of the inner cylinder 9 is located at a position where its longitudinal direction is along the line connecting the recess 77 of the outer cylinder 7 and the through hole 91 of the inner cylinder 9. Rotate counterclockwise when viewed from the back side of the gutter cover 1 until it becomes . Along with this, the connecting member 3 also rotates counterclockwise when viewed from the back side of the groove cover 1, so the slide members 2, 2 rotate inwardly from the side edge of the groove cover 1 while rotating around the shaft member 4. Further sliding in the retracting direction, the slide members 2, 2 slide in such a manner that they are retracted from the protrusion 203 of the opening frame member 200 toward the slide control device 6 side, as shown by the solid line and the imaginary line in FIG. .

To change the state in which the groove cover 1 is released from being held in the groove part 100 by the slide members 2, 2 to the state in which the groove cover 1 is held in the groove part 100 by the slide members 2, 2, move in the opposite direction. Then, the operation rod 11 is rotated.

In addition, when the groove cover 1 is released from being held in the groove part 100 by the slide members 2, 2, the pair of protruding parts of the operating rod connecting part 76 of the outer cylinder 7 and the operating rod connecting part of the through hole 91 of the inner cylinder 9 are connected. The pair of protruding parts of the part (the same part as the inner shape of the operating rod connecting part 76) functioning as a part are in a state shifted by about 135 degrees from the state in which the inner cylinder 9 and the outer cylinder 7 communicate with each other. Therefore, the insertion part 11c of the operating rod 11 in the through hole 91 of the inner cylinder 7 cannot be removed from the operating rod connecting part 76 of the outer cylinder 7 unless the groove cover 1 is held, so it holds the groove cover 1. This eliminates the possibility of forgetting to rotate the operating rod 11 in order to rotate the operating rod 11.

According to this slide control device 6, when inserting the operating rod 11 from the operating rod connecting portion 76 of the outer cylinder 7, the operating rod There is no need to push in the insertion portion 11c of 11. Further, the operating rod connecting portion 76 of the outer cylinder 7, the through hole 91 of the inner cylinder 9, and the discharge port 82a of the intermediate cylinder 8 are in communication with each other in any state after assembly, and the operating rod connecting portion 76 in the form of a through hole Moisture such as rainwater and foreign matter such as rust and dust that have entered the drain are discharged to the outside from the discharge port 82a. For this reason, the slide control device 6 may rust due to moisture that has entered the slide control device 6, or the slide control device 6 may become clogged due to foreign matter that has entered the slide control device 6, causing the intermediate cylinder 8 and the inner cylinder 9 to stop rotating. This is also prevented.

In the groove lid detachment prevention device to which the present invention is applied, the operating rod 11, the slide member 2, the connecting member 3, and the base plate 71 of the outer cylinder 7 are used to hold the groove lid with a conventional slide member. It can also be used in common with the device/mechanism for holding the groove cover with a conventional slide member.

9 and 10, a modified example of the intermediate cylinder 8 and the inner cylinder 9 of the groove cover removal prevention device to which the present invention is applied is shown. Hereinafter, a modified example of the device for preventing the groove cover from coming off will be described with reference to FIGS. 9 and 10. However, the same reference numerals are given to the same components as the groove cover removal prevention device described so far, and the explanation thereof will be omitted.

As shown in FIG. 9, the inner tube 9 has a hole 93 extending along the axial direction of the through hole 91 at a portion that becomes the bottom 81 side of the intermediate tube 8 when assembled. At the position where the line connecting the hole 93 and the center of the through hole 91 intersects the line connecting the pair of protruding parts of the through hole 91, and as shown in FIG. When a space S1 is formed by the notch 83 of the intermediate cylinder 8, a hole 93 is formed at a position on the side of the space S1. The engagement pin 15 is fitted into the hole 93 as shown in FIG.

As shown in FIGS. 9 and 10, the intermediate tube 8 has an arc-shaped groove 84 that opens toward the inner space of the tube body 81 in the bottom portion 81a. The groove portion 84 is
The engagement pin 15 can be displaced in both circumferential directions while being engaged. This groove part 84 has one end in the circumferential direction on a line connecting the center of the outlet 82a and the notch 83, and the groove cover 3 is viewed from above with respect to the line connecting the center of the outlet 82a and the notch 83. In this case, the other end in the circumferential direction is at a position at an angle of 45 degrees in the clockwise direction.

By having such a configuration of the inner cylinder 9 and the intermediate cylinder 8 and having the engagement pin 15, the operating rod 11 can be connected to the operating rod connecting portion 76 of the outer cylinder 7 and the operating rod connecting portion of the through hole 92 of the inner cylinder 9. (the same part as the inner shape of the operating rod connection part 76) and rotate the inner cylinder 9 by about 45 degrees from the position shown in FIG. 9(a) to the position shown in FIG. 9(b). In this case, since the engagement pin 15 only displaces within the groove 84 of the intermediate cylinder 8 from one end in the circumferential direction to the other end, the intermediate cylinder 8 does not rotate together with the inner cylinder 9. When the inner cylinder 9 is rotated from FIG. 9(b) to FIG. 9(c) beyond the rotation angle of 45 degrees, the engaging pin 15 reaches the other end of the groove 84, so the intermediate The cylinder 8 can rotate together with the inner cylinder 7. Therefore, from the state where the groove cover 1 is held so as not to come off from the groove part 100, which has been explained from FIG. 6 to FIG. The following actions are performed.

1 Groove cover 1a Plate-shaped part 1b Frame part 2 Slide member 3 for preventing slippage Connecting member 5 Support member 6 Slide control device 7 Outer cylinder 71 Base plate 75 Cylinder body 75a Lid part 76 Operation rod connection part 77 Recessed part (first recess)
8 Intermediate cylinder 81 Cylinder body 81a Bottom part 82 Mounting part 83 Notch 9 Inner cylinder 91 Through hole 92 Recessed part (second recessed part)
10 Rotation regulating member 11 Operating rod 100 Groove 101a Bottom surface

Claims (1)

A gutter cover removal prevention device that prevents a gutter cover for closing a gutter formed with an upward opening on a road from coming off from the gutter,
two sliding members for preventing slippage, which are arranged in parallel to a surface of a portion of the groove cover that faces the bottom surface of the groove portion, and slide along a surface of the portion of the groove cover that faces the bottom surface of the groove portion;
a slide control device that transmits the rotation of the operating rod to supply power for the two slide members to slide in mutually opposite directions and regulate the slide;
a connecting member that connects the two slide members and the slide control device;
a support member disposed on a surface of the groove cover at a portion facing the bottom surface of the groove portion and supporting the slide member;
Equipped with
The connecting member includes a first connecting portion for connecting to the slide control device, a second connecting portion for connecting to one of the two sliding members, and connecting to the other of the two sliding members. and a second connection part for connecting the ends of the first connection part and the one of the first connection parts, and the first connection part is located between the two second connection parts, and an end of the second connecting portion, and an end of the first connecting portion and an end of the other second connecting portion are respectively connected by a connecting portion,
The slide control device includes a substrate attached to the groove cover and a covered cylindrical body with a cover formed on the substrate side, and a through-hole-like body into which the operating rod is inserted. The cylindrical body is formed into a cylindrical body having an outer cylinder in which an operating rod connecting portion is formed, and a through hole that communicates with the operating rod connecting portion of the outer cylinder and has a portion on the substrate side into which the operating rod can be inserted; an inner cylinder rotatably disposed within the outer cylinder so as to be able to rotate independently in both directions within a predetermined range around the operating rod connection part; a cylinder body with a bottom; The mounting part is formed to protrude from the cylinder body and has a discharge port that communicates with the cylinder main body, and is disposed between the outer cylinder and the inner cylinder, and is arranged around the operating rod connecting part. an intermediate cylinder that rotates in both directions together with the inner cylinder within a predetermined range; and a rod-shaped rotation regulating member disposed between the outer cylinder and the inner cylinder;
One end of one of the two slide members in the longitudinal direction is connected to the second connection portion of the one of the connection members via a shaft member , and one end of the other of the two slide members in the longitudinal direction is connected to the second connection portion of the one of the connection members. is connected to the other second connection portion of the slide control device via a shaft member , and the attachment portion of the intermediate cylinder of the slide control device is attached to the first connection portion of the connection member, so that rotation of the intermediate cylinder is transmitted from the connecting member to the two slide members via the shaft member, and the two slide members swing slidably in mutually opposite directions about the shaft member,
A first recessed portion opening toward the intermediate cylinder side and extending in the axial direction is formed in the cylinder body of the outer cylinder, a notch portion is formed in the cylinder body of the intermediate cylinder, and a notch portion is formed in the cylinder body of the intermediate cylinder, and a first recessed portion is formed in the cylinder body of the intermediate cylinder, and a first recessed portion is formed in the cylinder body of the intermediate cylinder. A second recess is formed that is open to the axial direction and extends in the axial direction, and the rotation regulating member is connected to the space formed by the first recess and the notch, and the second recess. A device for preventing detachment of a groove cover, characterized in that switching between allowing rotation of the intermediate cylinder and restricting rotation is performed by displacing it between the space formed by the notch portion.

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