JP2015124597A - Blocking lid of manhole cover recess, lid body, and recess blocked manhole cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blocking lid of a manhole cover recess which has a simple structure, and can block recesses of a variety of manhole covers .SOLUTION: A blocking lid 100 is provided for blocking a recess 11 recessed on an upper surface of a manhole cover 10 so as to be inserted with a tool for opening/closing the manhole cover and to be provided with an engaging shaft 12 to which the tool for opening/closing the manhole cover engages inside the recess 11. The blocking lid 100 also comprises: a lid body 110 which can block the recess 11 from the upper face side of the manhole cover 10, and is formed with a coupling part 114 connected to the engaging shaft 12 at the rear surface side; and a band body 120 which couples the coupling part 114 and the engaging shaft 12 inside the recess 11 in a state that the lid body 110 blocks the recess 11.

Description

  The present invention relates to a closing lid for closing a recess for opening and closing a manhole cover, which is provided on the upper surface of the manhole cover.

  The manhole cover is provided with a recess which is recessed on the upper surface of the manhole cover so that an opening / closing tool can be inserted, and which has an engagement shaft with which the opening / closing tool engages. And the manhole cover arrange | positioned on a road etc. may be opened without permission by malicious intent or mischief, since the engaging shaft in this recess is exposed outside. Therefore, a closing lid for closing the recess of the manhole cover is used.

  For example, Patent Document 1 covers a recessed portion (3) of a manhole cover (1) with a cover plate (4) and uses a key handle (17) to provide a tool support rod (2) in the recessed portion (3). An occlusion device is disclosed that is locked to the device. The cover plate (4) of the closing device has a leg plate portion (6) projectingly formed on the lower surface (5) of the cover plate (4) and a shaft hole formed in the thickness direction of the cover plate (4). A lock shaft (9) rotatably inserted in (8) and having a driven portion (11) formed on the head, and a lower surface of the tool receiving rod (2) screwed to the lock shaft (9) And a lock arm (12) that abuts. The closing device forms a drive part (19) fitted to the driven part (11) of the lock shaft (9) in order to fix the cover plate (4) to the tool receiving rod (2). It further includes a key handle (17). In the closing device, the cover plate (4) is put on the recessed portion (3), and the drive portion (19) of the key handle (17) is fitted to the driven portion (11) of the cover plate (4). When the key handle (17) is rotated, the lock shaft (9) rotates and the lock arm (15) comes into contact with the lower surface of the tool receiving rod (2) to complete the closing and locking of the recess (3). . Furthermore, in the closing device of Patent Document 1, the stop pin (27) accommodated in the pin receiving hole (22) formed in the cover plate (4) in parallel with the shaft hole (8) is projected in the protruding direction by the spring member (28). The stop pin (27) is engaged with the stop groove (26) to stop the rotation of the lock shaft (9). As a result, the threaded engagement between the lock shaft (11) and the lock arm (12) is naturally loosened, and the tip (16) of the lock arm (12) is detached from the tool receiving rod (2), and the cover plate (4) is removed. The detachment from the recessed portion (3) of the manhole cover (1) can be suppressed.

JP 2008-88664 A

  However, a conventional closure device (hereinafter referred to as a closure lid) as disclosed in Patent Document 1 operates from a mechanism that locks a tool receiving rod (hereinafter referred to as an engagement shaft) by operating a lock shaft and a lock arm with a key handle. Therefore, the number of constituent members is large, and it has a complicated structure including driving parts. Due to its complicated structure, when impact or vibration is applied to the closure lid covering the recessed part (hereinafter referred to as a recess) of the manhole cover over a long period of time, the component member is damaged or the component members are connected to each other. Or the closure lid can be easily removed from the manhole lid. In addition, in the closure lid | cover of patent document 1, although the looseness of the screwing of a specific structural member (a lock shaft and a lock arm) is suppressed using a spring member, it came to solve the said problem from the complicated structure. Not in. There are many types of manhole covers, and the shape dimensions of the recesses (for example, the depth of the recesses and the position of the engagement shaft) are different for each manhole cover. And since the obstruction | occlusion lid | cover of patent document 1 has a complicated shape which consists of many structural members, when installing in a different kind of manhole cover, it cannot respond flexibly. That is, since each constituent member is manufactured with a size that conforms to a predetermined standard, it may not be possible to cope with a recess having an unexpected shape size at the time of manufacture. For example, in the closure lid of Patent Document 1, when the recess is shallow, the lock shaft or the lock arm interferes with the inner wall or the bottom wall of the recess, so that the recess cannot be closed.

  The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a manhole cover recess closing lid that has a simple structure and can close a wide variety of manhole cover recesses, It is an object of the present invention to provide a lid and a recess closing manhole cover in which the recess is closed by the closing lid.

The obstruction lid of the manhole cover recess according to claim 1 is recessed on the upper surface of the manhole cover so that a tool for opening and closing the manhole cover can be inserted, and an engagement shaft with which the tool engages is provided. A closing lid for closing the place,
A lid that can close the recess from the upper surface side of the manhole cover, and a binding body that is connected to the engagement shaft is formed on the back surface side;
And a band body that binds the binding portion and the engagement shaft in the recess in a state where the lid closes the recess.

  The closure lid of the manhole cover recess according to claim 2 is the closure lid of the manhole cover recess according to claim 1, wherein the lid body has an insertion hole through which the band body can be inserted, The lid body and the engagement shaft can be bound by the band body by pulling the tip of the band body outwardly through the insertion hole and operating it.

  According to a third aspect of the present invention, there is provided a closure cover for the manhole cover recess according to the first or second aspect, wherein the cover body is formed along the longitudinal direction of the band body through the band body. It further includes a lock portion for locking the locking portion in the removal direction.

  The closing cover for the manhole cover recess according to claim 4 is the closing cover for the manhole cover recess according to claim 3, wherein the cover body and the band body are separate bodies, and the band body and the lock portion are provided. It is integrally formed as a binding band, and a holding portion for holding the binding band is provided on the back surface of the lid.

  The closure hole of the manhole cover recess according to claim 5 is the closure hole of the manhole cover recess according to any one of claims 1 to 4, wherein when the recess is closed, the bundling portion is engaged with the engagement shaft. Adjacent to each other, and is tightly bound at the band portion.

  The closure lid of the manhole cover recess according to claim 6 is the closure lid of the manhole cover recess according to any one of claims 1 to 5, wherein the lid body includes a bundling portion and an engagement shaft. An insertion hole for inserting a tool from the surface side to release the binding is provided.

  According to a seventh aspect of the present invention, there is provided the closure hole for the manhole cover recess according to the sixth aspect, wherein the insertion hole is formed at a position corresponding to the binding portion.

  The closing cover of the manhole cover recess according to claim 8 is the closing cover of the manhole cover recess according to claim 6 or 7, wherein the binding part is inserted when releasing the binding between the binding part and the engagement shaft. It is comprised so that it may be destroyed with a tool through a hole.

  The lid according to claim 9 is the lid of the closure lid according to any one of claims 1 to 8, wherein the recess can be closed from the upper surface side of the manhole lid, and the back surface side. The bundling portion is formed in the chamfered portion, and the bundling portion and the engagement shaft are bound by the band body in the recess while the recess is closed with the lid.

  The recess-closure manhole cover according to claim 10 is provided with a recess formed in the upper surface so that a tool for opening and closing the manhole cover can be inserted, and an engagement shaft for engaging the tool formed in the recess. The closure lid according to any one of claims 1 to 8, wherein the recess is closed via an engagement shaft.

  According to the closure lid of the manhole lid recess according to claim 1, the band body binds the binding portion and the engagement shaft of the lid body in the recess in a state where the lid closes the recess, whereby the band body The bundling portion and the engagement shaft can be connected via the closure, and the recess can be fixedly closed with the closing lid. That is, the closing lid is composed of a constituent member having a small number of lids and band bodies, and has a simple structure in which the lid itself is bound by a band body. In the closure lid, the simple structure and the reduction in the number of parts greatly reduce the possibility that the constituent members are damaged or the constituent members are loosened due to impact or vibration. In the closure lid of the present invention, the band body is generally flexible, and can be bent and deformed by contacting the inner wall or the bottom wall of the inner space of the recess. Therefore, the band body can be freely deformed and the binding portion of the lid body can be connected to the engagement shaft without being influenced by the size and shape of the recess. In other words, the closing lid of the present invention can correspond to a wide variety of manhole lid recess shapes.

  According to the closure lid of the manhole lid recess according to claim 2, in addition to the effect of the invention of claim 1, the closure lid can be easily and quickly operated by operating the tip of the band body through the insertion hole. It can be fixed in the recess.

  According to the closure cover of the manhole cover recess according to claim 3, in addition to the effect of the invention of claim 1 or 2, the band body is locked in the removal direction by inserting the band body into the lock portion. Thus, the binding portion and the engagement shaft can be easily bound by the band body.

  According to the closure cover of the manhole cover recess according to claim 4, in addition to the effect of the invention of claim 3, a general binding band can be used for binding the cover body to the engagement shaft. The manufacturing cost of the closure lid can be reduced. Furthermore, since the separate binding band can be held by the holding portion on the back surface of the lid, the closure lid can be carried together.

  According to the closure cover of the manhole cover recess according to claim 5, in addition to the effect of the invention of any one of claims 1 to 4, the binding portion of the lid and the engagement shaft are brought close to each other and tightly closed. By binding, it is possible to firmly close the recess without the cover body rattling against the engagement shaft.

  According to the closure lid of the manhole cover recess according to claim 6, in addition to the effect of the invention of any one of claims 1 to 5, after closing the manhole cover recess with the closure lid, the tool is inserted from the insertion hole. By inserting and operating the band body, binding of the binding portion and the engagement shaft can be released. That is, if necessary, the closing lid can be easily removed from the manhole lid recess.

  According to the closure lid of the manhole cover recess according to claim 7, in addition to the effect of the invention of claim 6, by inserting the tool into the insertion hole, the tool can be used for both the band body and the binding portion. You can apply force effectively. For example, in a state where the band body is supported by the bundling portion, the band body can be easily cut with a tool to release the bundling. Alternatively, the binding portion itself can be easily broken with a tool to release the binding. That is, if necessary, the closing lid can be easily removed from the manhole lid recess.

  According to the closure lid of the manhole cover recess according to claim 8, in addition to the effect of the invention of claim 6 or 7, when removing the closure lid from the manhole cover recess, the binding portion is formed by a tool through the insertion hole. Is destroyed. And once this obstruction lid is removed, since the evidence that the bundling portion has been destroyed remains in the obstruction lid, the fact that the obstruction lid has been removed can be confirmed afterwards instead of being unable to be reused. In other words, it is prevented that the obstruction lid is removed and some mischief or malicious work is performed in the recess, and then the obstruction lid is reattached to the recess and remains unclear.

  According to the lid of the ninth aspect, the effect of the invention of any one of the first to eighth aspects is exhibited as the lid.

  According to the recess-closure manhole cover described in claim 10, the operational effects of any one of claims 1 to 8 are exhibited as the recess-closure manhole cover.

The perspective view which shows the (a) plane side of the cover body of the obstruction | occlusion lid of one Embodiment (Example 1) of this invention, and (b) The perspective view which shows the bottom face side. (A) top view, (b) bottom view, (c) front view and (c) side view of the lid of FIG. (A) AA sectional view of Drawing 2 (a), and (b) BB sectional view of Drawing 2 (a). The (a) front view of the state which piled up the two cover bodies of FIG. 1, (b) CC sectional drawing, and (c) DD sectional drawing. The perspective view which shows the (a) plane side of the band body of the obstruction | occlusion lid of one Embodiment of this invention, (b) The perspective view which shows the bottom face side, (c) Sectional drawing along a longitudinal direction. (A) The top view of the manhole cover of one Embodiment of this invention, and (b) EE sectional drawing of a manhole cover recess. (A) The top view of the recess obstruction | occlusion manhole cover of one Embodiment of this invention, and (b) FF sectional drawing of a manhole cover recess. The schematic diagram which shows the process of obstruct | occluding a manhole cover recess with an obstruction | occlusion lid in order to construct the recess obstruction | occlusion manhole cover of FIG. The schematic diagram which shows the process of removing a closure lid | cover from the recess closure manhole cover of FIG. The perspective view which shows the (a) bottom face side of the cover body of the obstruction | occlusion lid of another embodiment (Example 2) of this invention, and (b) Side sectional drawing. The schematic diagram which shows the process of removing the obstruction | occlusion lid | cover of FIG. 10 from a manhole cover recess. (A) Side sectional view of the closure lid of another embodiment (Example 3) of the present invention, and (b) Side sectional view of the state which closed the manhole lid recess with this closure lid.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the shape of each figure referred in the following description is a conceptual diagram or a schematic diagram for explaining a suitable shape dimension, and a dimension ratio etc. do not necessarily correspond with an actual dimension ratio. That is, the present invention is not limited to the dimensional ratio in the drawings. In addition, the vertical and horizontal directions in the present invention are merely a concept indicating a relative position, and needless to say, these can be applied interchangeably.

Example 1
The closing lid 100 according to an embodiment of the present invention includes a lid body 110 (see FIGS. 1 to 4) and a band body 120 (see FIG. 5) so as to close the recess 11 of the manhole lid 10. Become. Hereafter, with reference to FIGS. 1-5, each structural member of the obstruction | occlusion lid 100 of this embodiment is demonstrated in detail.

  First, with reference to FIGS. 1-4, the cover body 110 of the obstruction | occlusion lid 100 of this embodiment is demonstrated. 1A and 1B are a perspective view of the lid 110 on a plan view side and a perspective view on a bottom view side. 2A, 2 </ b> B, 2 </ b> C, and 2 </ b> D are a plan view, a bottom view, a front view, and a side view of the lid 110. FIGS. 3A and 3B are an AA cross-sectional view and a BB cross-sectional view of the lid 110, respectively. 4A, 4B, and 4C are a front view, a CC cross-sectional view, and a DD cross-sectional view in a state where the two lid bodies 110 are arranged so as to overlap each other.

  As shown in FIGS. 1 and 2, the lid body 110 includes a plate-like portion 111 having a front surface 111 a and a back surface 111 b, a first leg portion 112 on one end side erected from the back surface 111 b of the plate-like portion 111, The second leg 113 on the other end facing the first leg 112 and a bundling part 114 coupled to the second leg 113 are provided. The lid 110 is integrally formed of synthetic resin. In the present description, the end on the first leg 112 side in the long side direction of the lid 110 is defined as one end, and the end on the second leg 113 side is defined as the other end.

  As shown in FIG. 2A, the plate-like portion 111 of the lid 110 is made of a rectangular thin plate material having a long side and a short side. The dimensions of the long side and the short side of the plate-like portion 111 are determined so that the recess 11 of the manhole cover 10 can be completely closed. Moreover, the outer peripheral part of the surface 111a of this plate-shaped part 111 inclines, and an outer peripheral part is slightly thinner than a center part. The plate-like portion 111 is formed with a rectangular slit-shaped insertion hole 115 on the first leg portion 112 side and a rectangular slit-shaped insertion hole 116 on the second leg portion 113 side. The insertion hole 115 and the insertion hole 116 are respectively arranged at the approximate center of the plate-like portion 111 in the short side direction, and the long axes thereof are aligned in parallel with the short sides. Further, as shown in FIG. 3A, the peripheral edge 115 a around the insertion hole 115 is recessed on the surface 111 a of the plate-like part 111. The insertion hole 115 is formed with a dimension that allows the band portion 121 of the band body 120 to be inserted. 3A, in the insertion hole 115, the inner wall on one end side extends perpendicularly to the plate-like portion 111, whereas the inner wall on the other end side (the inner wall) Is inclined at about 20 ° on one end side (so that the upper side of is located on the one end side rather than the lower side). In other words, from the front surface 111a to the back surface 111b of the plate-like portion 111, the inner wall on the other end side recedes to the second leg portion 113 side, and the insertion hole 115 is wide. This inclined inner wall is defined as an inclined wall 115b. On the other hand, the insertion hole 116 is sized so that a tool such as a flathead screwdriver D can be inserted, and is formed in the plate-like portion 111.

  In the lid 110, the first leg portion 112 and the second leg portion 113 protrude from the back surface 111 b of the plate-like portion 111 at a substantially right angle. And the 1st leg part 112 and the 2nd leg part 113 are arrange | positioned spaced apart in the long side direction. In the front view of FIG. 2C, the first leg 112 and the second leg 113 are arranged so as to form a mirror image relationship, and the lid 110 is formed substantially symmetrically.

  As shown in FIG. 2B, the first leg portion 112 is erected in a substantially U shape in a bottom view and extends in the long side direction, and the pair of first opposing walls 112a. It consists of the side wall 112b extended in the short side direction which connects the one end. The side wall 112b is lower than the height of the first opposing wall 112a. The first opposing wall 112a and the side wall 112b surround the insertion hole 115 from three directions, and the other end side is open. Further, in the front view shown in FIG. 2C, the vicinity of the proximal end of the other end edge of the first opposing wall 112a is curved in an arc shape to form the first curved portion 112c, and the first curved portion 112c The other end edge extends vertically downward toward the tip. And the front-end | tip of the other end edge of the 1st opposing wall 112a is chamfered, and is curving. On the other hand, one end edge of the first opposing wall 112a extends vertically downward from the base end, and then linearly inclines to the other end side. That is, the first opposing wall 112a is wide at the base end side, and has a substantially right-angled triangular shape at the front end side.

  On the other hand, as shown in FIG. 2B, the second leg portion 113 is disposed on the other end side of the first leg portion 112 and includes a pair of second opposing walls 113a extending in the longitudinal direction. An insertion hole 116 is formed between the pair of second opposing walls 113a, and one end and the other end in the longitudinal direction are opened. The insertion hole 116 is disposed in the vicinity of one end edge of the second opposing wall 113a. In the front view shown in FIG. 2 (c), the vicinity of the proximal end of the one end edge of the second opposing wall 113a is curved in an arc shape to form the second curved portion 113c, and from the second curved portion 113c toward the distal end. One end edge extends vertically downward. The tip of the other end edge of the second opposing wall 113a is chamfered and curved. On the other hand, the other end edge of the first opposing wall 113a extends vertically downward from the base end, and then linearly slopes toward one end side. That is, the second opposing wall 113a is wide at the base end side, and has a substantially right triangle shape in front view on the distal end side, like the first opposing wall 112a.

  2C, the engagement shaft 12 of the manhole cover recess 11 is provided between the first opposing wall 112a of the first leg 112 and the second opposing wall 113a of the second leg 113. An accommodating portion 117 that can be sandwiched is formed. The accommodating portion 117 has an R shape in a front view in which the first bending portion 112c and the second bending portion 113c are combined on the plate-like portion 111 side. The width of the accommodating portion 117 (the distance between the first opposing wall 112a and the second opposing wall 113a) is set larger than the diameter of the engagement shaft 12 to be attached.

  Further, as shown in FIG. 3B, the interval between the pair of second opposing walls 113 a of the second leg portion 113 is shorter than the interval between the pair of first opposing walls 112 a of the first leg portion 112. More specifically, the distance between the outer surfaces of the pair of second opposing walls 113a is approximately equal to the distance between the inner surfaces of the first opposing walls 112a. Thereby, as shown to Fig.4 (a)-(c), it is possible to make the back surface 111b of the two cover bodies 110 oppose and to overlap. In other words, the second leg 113 of the other lid 110 is arranged inside the first leg 112 of the one lid 110, and the other lid is placed outside the second leg 113 of the one lid. By disposing the first leg portion 112 of the body 110, the two lid bodies 110 are overlapped. And in this combined state, since the flat surface 111a of each lid body 110 faces up and down, a plurality of sets of combinations can be stably stacked. Thereby, for example, when the plurality of lids 110 are stored or transported together, it is advantageous for space saving. Although not shown, by selectively forming a rib protruding outward at the other end edge of the second opposing wall 113a, it is possible to prevent the overlapping lid bodies 110 from shifting in the long side direction. it can.

  Further, as shown in FIGS. 3A and 3B, the lid 110 is formed with a bundling portion 114 so as to join one end edges of the pair of second opposing walls 113 a of the second leg portion 113. . The binding portion 114 is formed at a position immediately below the insertion hole 116 at one end of the second leg portion 113. The binding portion 114 has an R-shaped outer peripheral surface 114a on the other end side. As will be described later, the band portion 121 of the band body 120 is bent and deformed and tightly wound around the R-shaped outer peripheral surface 114a. Further, the binding portion 114 is disposed with a gap 118 from the back surface 111 b of the plate-like portion 111. The gap 118 is larger than the thickness of the band portion 121 of the band body 120, but smaller than the thickness of the lock portion 122 of the band body 120. In other words, the gap portion 118 is formed with a width that allows the band portion 121 to pass therethrough but allows the lock portion 122 to be locked by the binding portion 114. That is, the gap portion 118 also functions as a holding portion that holds the band body 120 so as not to fall.

  In addition, although the cover body 110 of this embodiment was formed by integrally molding synthetic resin, the cover body of the present invention is not limited to this. For example, the lid of the present invention may be formed from other materials such as metal. Furthermore, the lid of the present invention is not limited to the shape and size of the lid 110 described above, and it is needless to say that the shape and size can be designed arbitrarily. For example, as long as the lid can close the manhole lid recess, an oval or other polygon may be used in addition to the rectangular body. Or it is also possible to change the leg member of a cover to another shape, or to abbreviate | omit.

  Next, the band body 120 of the closing lid 100 of this embodiment will be described with reference to FIG. 5A, 5B, and 5C are a perspective view of the band body 120 on a plan view side, a perspective view on a bottom view side, and a longitudinal sectional view. As shown in FIGS. 5A and 5B, the band body 120 is formed at a flexible long band portion 121 and a base end of the band portion 121, and is inserted and engaged with the band portion 121. And a rectangular lock portion 122 that stops and fixes. This band body 120 is generally called a binding band or a cable tie. As shown in FIG. 5 (c), a plurality of serrated locking protrusions (locked portions) 121 a are provided on the surface of the band portion 121 of the band body 120. Further, the lock portion 122 is provided with an insertion locking hole 122a that is opened to allow the band portion 121 to be inserted therein, and a lock claw 122b that is formed in the insertion locking hole 122a so as to be elastically deformable. And if the front-end | tip of the band body 120 is inserted in the penetration locking hole 122a of the lock part 122 located in the base end, the latching protrusion 121a and the lock nail | claw 122b of the band part 121 surface will engage. At this time, the band part 121 can advance stepwise in the insertion locking hole 122a of the locking part 122, but the locking projection 121a is locked to the locking claw 122b in the withdrawal direction opposite to the traveling direction. . That is, the band portion 121 is restrained and coupled to the lock portion 122 so as not to be removed at a predetermined position. In addition, as will be described later, the band portion 121 is coupled to the lock portion 122 to form the annular portion C with the band body 120. Note that the band body of the present invention is not limited to the binding band of the present embodiment, and other flexible elongated bodies may be adopted as long as the binding portion and the engagement shaft can be bound.

  Subsequently, the manhole cover 10 to which the closing cover 100 of the present embodiment is attached will be described with reference to FIG. FIG. 6 is a schematic view illustrating the structure of a general manhole cover 10. On the upper surface of the manhole cover 10, recesses 11 are formed in two places so that tools for opening and closing the manhole cover can be inserted. As shown in FIG. 6A, the recess 11 is a long hole having a substantially rectangular shape in plan view, and an engagement shaft 12 extending in the minor axis direction is installed in the recess 11 at the approximate center in the major axis direction. Has been. The engagement shaft 12 is configured such that a manhole cover opening / closing tool can be engaged. Further, as shown in FIG. 6B, the recess 11 is recessed from the upper surface of the manhole cover 10 with a predetermined depth. In the cross-sectional view of FIG. 6B, the engagement shaft 12 having a substantially circular cross section is disposed apart from the inner wall and the bottom wall of the recess 11. Then, a manhole cover opening / closing tool such as a bar is inserted into the recess 11, and the manhole cover 10 is lifted by opening the manhole cover 10 by hooking the tool tip onto the engagement shaft 12 and applying a force. The illustrated manhole cover 10 is merely an example of a manhole cover to which the closing cover 100 of the present embodiment is attached, and can be changed to various manhole covers having a recess and an engagement shaft.

  7A and 7B are a plan view and a cross-sectional view showing the recess closing manhole cover 10 'in a state where the recess 11 is closed by the closing lid 100 of the present embodiment. As shown in FIG. 7A, the two recesses 11 are covered with the two closing lids 100 and are completely closed. That is, the engagement shaft 12 in the recess 11 is not exposed to the outside. Then, as shown in FIG. 7B, an annular portion C is formed by the band body 120 in the recess 11 with the lid 110 closing the recess 11, and the binding portion 114 and the engagement shaft 12 are By being surrounded and bound by the annular portion C of the band body 120, the binding portion 114 is connected to the engagement shaft 12 via the band body 120. As a result, the closing lid 100 is fixed to the manhole lid 10 with the recess 11 covered.

  In more detail with reference to FIG. 7B, in the recessed blockage manhole cover 10 ′, the plate-like portion 111 of the lid body 110 is placed on the periphery of the manhole cover recess 11. Further, the engagement shaft 12 is sandwiched between the first leg portion 112 and the second leg portion 113, and the engagement shaft 12 is disposed in the accommodating portion 117. At this time, the distance between the first leg portion 112 and the second leg portion 113 is larger than the shaft diameter of the engagement shaft 12, and a slight gap is generated between them. Then, in the recess 11 on the back surface 111 b side of the plate-like part 111, the band part 121 is locked above the engagement shaft 12 in a state where the band part 121 of the band body 120 is rotated below the engagement shaft 12. Coupled to portion 122. Thereby, the band part 121 forms the closed annular part C. The bundling portion 114 and the engagement shaft 12 are surrounded by the annular portion C of the band portion 121 without loosening, and the both are tightly bound. That is, the band portion 121 passes through the gap 118 between the back surface 111 b of the lid 110 and the binding portion 114, and the R-shaped outer peripheral surface 114 a and the engagement shaft 12 of the binding portion 114 on the other end side of the engagement shaft 12. The band portion 121 is bent in close contact with the lower outer peripheral surface in an R shape, and the tip of the band portion 121 is inserted into the insertion locking hole 112a of the lock portion 122 on one end side of the engagement shaft 12 and restrained. ing. As a result, the bundling portion 114 formed integrally with the one end edge (on the engagement shaft 12 side) of the second leg portion 113 is connected to the engagement shaft 12 that is substantially adjacent (in the long side direction of the lid 110). On the other hand, the band body 120 is attracted. In particular, the binding portion 114 and the engagement shaft 12 are connected without the band portion 121 slackening, and the band portion 121 is biased so as to be close to each other in the vertical direction. The locking protrusion 121a and the lock claw 122b are engaged with each other, and the band portion 121 is locked so as not to retreat in the removal direction. That is, in the recess closing manhole cover 10 ′, a tight bundling state in which the annular portion C of the band portion 121 is narrowed is effectively maintained with a simple mechanism.

  In the recess closing manhole cover 10 ′, the end of the band body 120 is selectively cut, and the band body 120 does not extend to the surface 111 a side of the lid body 110 through the insertion hole 115. That is, the band body 120 that binds the binding portion 114 to the engagement shaft 12 on the back side of the lid 110 and the annular portion C are not exposed to the outside of the recess 11 at all. And since the closure mechanism of the recess 11 of the closure lid 100 is not visible from the outside, there is a possibility that the binding means (band body 120) is operated from the outside and the closure lid 100 is removed from the recess 11. It has been reduced. As a result, it is possible to prevent the manhole cover 10 from being opened by inserting a manhole cover opening / closing tool into the recess 11 and operating the engagement shaft 12 due to malicious or mischief.

  In the recess-closure manhole cover 10 ′ illustrated in FIG. 7B, the annular portion C of the band portion 121 is narrowed (as much as possible) until it comes into contact with the binding portion 114 and the engagement shaft 12. The portion 114 and the engagement shaft 12 are tightly bound. However, the present invention is not limited to the tight binding as in the present embodiment. That is, the “binding” of the present invention means that the band body is connected so that the binding portion and the engaging shaft are bundled together, and includes that the binding portion and the engaging shaft are loosely bound. It is out. For example, a case where a gap is generated between the engagement shaft and the binding portion as shown in FIG. 8B and there is some backlash is also included in the technical scope of the present invention.

  Further, in the present embodiment illustrated in FIG. 7B, the engagement shaft 12 is disposed at substantially the center of the first leg portion 112 and the second leg portion 113, but the engagement shaft 12 is on the bundling portion 114 side. The closing lid 100 may be fixed in the recess 11 so that the second leg 113 (bundling portion 114) and the engagement shaft 12 come into contact with each other relatively to the second leg 113. In this case as well, the band body 120 tightly binds the engagement shaft 12 and the binding portion 114, so that the lid body 110 can be fixed so as not to rattle in the recess 11. Alternatively, in addition to the configuration of FIG. 7B, a packing is disposed around the back surface 111b of the plate-like portion 111 or the first and second leg portions 112 and 113, and the closing lid 100 is displaced via the packing. You may attach to the recess 11 so that it may not exist.

  An example of the configuration using this packing will be specifically described. A rectangular frame packing (not shown) made of an elastic material (synthetic rubber or the like) is bonded along the outer peripheral edge of the back surface 111b of the plate-like portion 111. Affixed with an agent. And this packing is arrange | positioned between the back surface 111b of the plate-shaped part 111, and the peripheral upper surface of the recess 11. FIG. In the state of binding by the band body 120 in FIG. 7B, the lid body 110 (binding section 114) is strongly biased against the engagement shaft 12 by the binding force due to the tightening of the band body 120. By this binding force (or tightening force), the packing is elastically deformed and crushed between the plate-like portion back surface 111b and the peripheral upper surface of the recess 11. That is, when the band body 120 is strongly tightened, the packing closely adheres to both the lid body 110 (rear surface 111b) and the upper surface of the manhole lid 10 (periphery peripheral edge), and the frictional force therebetween increases. As a result, the closing lid 100 closes the manhole lid recess 11 more firmly and securely while being prevented from slipping or slipping against the upper surface of the manhole lid 10.

  Next, with reference to FIG. 8, the process of closing the recess 11 of the manhole cover 10 with the closing cover 100 of one embodiment will be described.

  First, as shown in FIG. 8A, the plate-like portion 111 of the lid 110 is bound to the bundling so that the lock portion 122 of the band body 120 is disposed in the vicinity of the insertion hole 115 between the pair of first legs 112. The tip of the band part 121 of the band body 120 is inserted into the gap 118 between the part 114. At this time, the gap 118 serves as a holding portion, and the band body 120 is held so as not to fall from the lid body 110. Next, the distal end of the band portion 121 is inserted between the bottom wall of the recess 11 and the engagement shaft 12 from the other end side of the engagement shaft 12 while the closure lid 100 is positioned and held above the recess 11. Then, in a state where the band portion 121 is rotated below the engagement shaft 12, the tip end is pulled up so as to bend upward on one end side of the engagement shaft 12. Then, the front end of the band part 121 is inserted into the insertion locking hole 122 a of the lock part 122 so that the band part 121 surrounds the engagement shaft 12 and the binding part 114.

  Next, the tip of the band 121 passing through the insertion locking hole 122a of the lock portion 122 is inserted into the insertion hole 115 from the back surface 111b side of the lid 110, and the tip of the band 121 is placed on the surface 111a side of the lid 110. Pull out. Then, the lid body 110 is placed on the manhole lid 10 so as to close the recess 11 with the plate-like portion 111. In the state of FIG. 8B, the binding portion 114 and the engagement shaft 12 are loosely bound by the annular portion C of the band body 120, and the band portion 121 is restrained by the lock portion 122 so that it cannot be removed. . Furthermore, the opening direction of the insertion locking hole 122a of the lock part 122 and the inclination direction of the inclined wall 115b are aligned on a substantially straight line. That is, the tip of the band part 121 extending from the lock part 122 extends substantially linearly (without being refracted) along the inclined wall 115b. Then, from the state of FIG. 8B, the tip of the band 121 is further pulled out obliquely upward (in the direction of the arrow in FIG. 8B).

  As shown in FIG. 8 (c), the band portion 121 is moved into the lock portion 122 by strongly pulling out the band portion 121 so that the binding portion 114 and the engagement shaft 12 are tightened by the annular portion C of the band portion 121 in this way. The lock portion 122 is pulled toward the engagement shaft 12. At this time, since the band portion 121 extends substantially linearly from the engagement shaft 12 to the lock portion 122, the lock portion 122 can be smoothly pulled toward the engagement shaft 12. As a result, the annular portion C of the band portion 121 is narrowed, and the binding portion 114 and the engagement shaft 12 are more tightly bound by the band portion 121. Further, the recess closing manhole cover 10 ′ shown in FIG. 7B is constructed by selectively cutting the band portion 121 extending from the insertion hole 115 on the surface 111 a side of the closing cover 100.

  Therefore, the recess closing manhole cover 10 ′ can be constructed by simply and quickly attaching the closing lid 100 of the present embodiment to the engagement shaft 12 of the manhole cover recess 11 by the above-described simple operation or process. it can. Note that the method described here is merely an example, and those skilled in the art can change the order of the steps or omit unnecessary steps depending on the situation.

  Moreover, with reference to FIG. 9, the process of removing the closure lid | cover 100 from the recess closure manhole lid | cover 10 'of one Embodiment is demonstrated.

  As shown in FIG. 9A, the tip of a tool D such as a flat-blade screwdriver is inserted into the insertion hole 116 formed in the other end of the lid 110. Then, the tip of the tool D is pressed against the band part 121 stretched on the binding part 114, and the band part 121 is cut on the binding part 114. At this time, since the binding portion 114 is disposed directly below the insertion hole 116, the band portion 121 can be sandwiched from above and below by the tool D tip and the binding portion 114, and the band portion 121 can be easily cut. As a result, as shown in FIG. 9B, the annular portion C of the band body 120 surrounding the binding portion 114 and the engagement shaft 12 is released, and the binding of the binding portion 114 and the engagement shaft 12 is released to close the band portion 120. The lid 100 can be removed from the recess closure manhole lid 10 '.

  Hereinafter, the effect of the closure lid 100 (or recess closure manhole lid 10 ') of the manhole lid recess according to an embodiment of the present invention will be described.

  In the closure lid 100 of the manhole cover recess of the present embodiment, the band body 120 forms an annular portion C in the recess 11 with the lid body 110 closing the recess 11, and the lid body 110 is formed by the annular portion C. The bundling portion 114 and the engagement shaft 12 are surrounded and bound. Thereby, the bundling portion 114 and the engagement shaft 12 can be connected via the band body 120, and the recess 11 can be fixedly closed with the closing lid 100. That is, the closure lid 100 is composed of two components, ie, the lid body 110 and the band body 120, by adopting a mechanism that binds the integrally formed lid body 110 itself with the band body 120, and is a driving component. It has a simple structure that does not have In the closure lid 100, the structure is simplified, the drive parts are eliminated, and the number of parts is reduced, so that each structural member can be damaged due to impact, vibration, or the like. The risk of loosening has been greatly reduced. Further, the closing lid 100 of the present embodiment surrounds and binds the binding portion 114 and the engagement shaft 12 of the lid 110 with a long flexible band body 120. The band body 120 is generally flexible and can be bent and deformed by contacting the inner wall or the bottom wall of the recess 11 in the inner space. Therefore, without depending on the size and shape of the recess 11, the band body 120 is rotated below the engagement shaft 12 to form the annular portion C in the recess 11, and the binding portion 114 of the lid 110 is engaged. It can be connected to the shaft 12. That is, the closure lid 100 of the present embodiment can correspond to a wide variety of manhole lid recess shapes.

  Furthermore, in the conventional closure lid, since the operation part of the lock mechanism is arranged on the upper surface of the cover member covering the recess 11 of the manhole lid 10, the closure lid is unlocked and removed due to malicious or mischief. There was a fear. On the other hand, in the closure lid 100 of this embodiment, the band body 120 surrounds and binds the binding portion 114 and the engagement shaft 12 in the recess 11 on the back side of the lid body 110. That is, by not exposing the annular portion C of the band body 120 in the recess 11 to the outside of the manhole cover 10, the band body 120 is operated from the outside of the manhole cover 10 by malicious or mischief and the closure cover 100 is recessed. The removal from the place 11 is suppressed.

(Example 2)
10A and 10B show a manhole cover recess closing cover 200 according to another embodiment of the present invention. FIG. 10A is a perspective view showing the bottom surface side of the closing lid 200, and FIG. 10B is a side sectional view of the closing lid 200.

  The closing lid 200 according to the second embodiment includes a bundling portion 214 configured to be relatively thin, but other components than the bundling portion 214 are common to the constituent elements of the closing lid 100 according to the first embodiment. The thin-walled binding portion 214 is bound to the engagement shaft 12 by the band body 220 and has a strength enough to maintain the closure lid 200 fixed to the engagement shaft 12, but is added directly. It is brittle to the extent that it can be destroyed by local blow or pressure. That is, the closing lid 200 according to the second embodiment differs from the step of removing the closing lid 100 according to the first embodiment (see FIG. 9) by breaking the thin-walled binding portion 214, thereby removing the closing lid 200 from the manhole lid recess. 11 is removed.

  With reference to FIG. 11, the process of removing the closing lid 200 from the manhole lid recess 11 will be specifically described. As shown in FIG. 11A, the tip of a tool D such as a flat-blade screwdriver is inserted into the insertion hole 216 formed on the other end side of the lid 210. Then, the tip of the tool D is pressed against the band portion 221 stretched on the binding portion 214 to destroy the thin-walled binding portion 214. At this time, a strong impact or pressing force is applied to the thin plate binding portion 214 via the band portion 221, and the binding portion 214 is destroyed without being cut (or cut), and the second leg portion 213 is broken. Fall from. As a result, as shown in FIG. 11 (b), the bundling portion 214 is removed from the inside of the annular portion C of the band body 120, the bundling portion 214 and the engagement shaft 12 are released from bundling, and the closing lid 200 is replaced with the manhole lid. It can be removed from the recess 11.

  In the second embodiment, when removing the closing lid 200 from the manhole lid recess 11, the thin bundled portion 214 is broken by the tool D through the insertion hole 216. That is, when the closure lid 200 is removed even once, evidence that the binding portion 214 is broken remains in the lid body 210, so that the fact that the lid body 210 has been removed is confirmed afterwards instead of being unable to be reused. be able to. That is, in the closure lid 200 of the second embodiment, the closure lid 200 is removed, and some mischief or malicious work is performed in the recess 11, and then the closure lid 200 is reattached to the recess 11. It is prevented that it does not remain.

(Example 3)
In the closed lid of the embodiment shown in Examples 1 and 2 of the present invention, the lid and the band are configured as separate bodies. However, the present invention is not limited to this, and the lid body and the band body may be integrally formed.

  A manhole cover recess closure lid 300 of another embodiment of the present invention is shown in FIG. FIG. 12A is a side sectional view of the closing lid 300 of the third embodiment. As shown in FIG. 12A, the closing lid 300 includes a lid body 310 and a band body 320 integrated with the lid body 310. The lid 310 includes a rectangular plate-shaped portion 311 having a front surface 311 a and a back surface 311 b, a first leg portion 312 on one end standing from the back surface 311 b of the plate-shaped portion 311, and the first leg portion 312. And a second leg portion 313 on the other end side facing each other. The first leg portion 312 and the second leg portion 313 have the same shape as the first leg portion 112 and the second leg portion 113 of the first embodiment. The plate-like portion 311 is provided with an insertion hole 315 on one end side, but no insertion hole is provided on the other end side. A lock claw 315 c is formed on the inner wall of the insertion hole 315. That is, the insertion hole 315 functions as a lock portion. On the other hand, a band body 320 is integrally formed on the back surface 311b of the lid 310, and a long band portion 321 hangs down on the back surface 311b side of the lid 310 so as to be bent. The band portion 321 is provided with a plurality of locking projections 321a that can be engaged with the lock claw 315c.

  FIG. 12B is a side sectional view of the state where the manhole cover recess 11 is closed with the closing cover 300. As shown in FIG. 12B, in the closing lid 300, the tip of the band portion 321 is inserted into the insertion hole 315 in a state where the band portion 321 of the band body 320 is rotated below the engagement shaft 12. At 320, the lid 310 and the engagement shaft 12 are tightly bound and connected. At this time, the lower surface of the engagement shaft 12 is biased upward by the band body 320, and the plate-like portion 111 (or the entire lid body 310) of the lid body 310 is coupled to the engagement shaft 12 by the band body 320. That is, the bundling portion of the closing lid 300 according to the third embodiment is interpreted as the plate-like portion 311 of the lid body 310. Then, the locking protrusion 321a of the band portion 321 is locked in the removal direction by the lock claw 315c, whereby the band portion 321 is restrained by the insertion hole 315 (lock portion). As a result, in the state in which the lid 310 closes the recess 11, the band body 320 binds and connects the plate-like portion 311 (binding portion) and the engagement shaft 12 in the recess 11.

(Modification)
Although the embodiment of the present invention has been described, the present invention is not limited to the first to third embodiments. The closing lid of the present invention may not include all the components of the above-described embodiment, and each component can be arbitrarily omitted. For example, when the insertion hole is omitted from the lid, it is possible to operate by pulling the tip of the band body from the gap between the lid and the peripheral edge of the recess. Further, if the removal of the closing lid from the manhole lid is not considered, the insertion hole may be omitted from the lid. Alternatively, either or both of the first and second legs may be omitted from the closure lid.

  The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

10 Manhole cover 10 'Recess closure Manhole cover 11 Manhole cover recess (or recess)
12 Engagement shaft 100 Closure lid 110 Cover body 111 Plate-like portion 111a Front surface 111b Back surface 112 First leg portion 113 Second leg portion 114 Bundling portion 115 Insertion hole 115a Peripheral portion 115b Inclined wall 116 Insertion hole 117 Accommodating portion 118 Clearance (holding) Part)
120 Band body 121 Band portion 121a Locking protrusion (locked portion)
122 lock part 122a insertion locking hole 122b lock claw C annular part

Claims (10)

A closure lid for closing a recess provided in the upper surface of the manhole cover so that a tool for opening and closing the manhole cover can be inserted, and the engagement shaft with which the tool engages is provided.
A lid body capable of closing the recess from the upper surface side of the manhole cover and having a binding portion connected to the engagement shaft formed on the back surface side;
A closing lid comprising: a band body for binding the binding portion and the engagement shaft in the recess in a state where the lid closes the recess.   The lid body is provided with an insertion hole through which the band body can be inserted, and the band body is operated by pulling out the tip of the band body to the outside of the recess through the insertion hole. The closure lid according to claim 1, wherein the lid and the engagement shaft can be bound by a body.   The closure according to claim 1, further comprising a lock portion that is inserted through the band body and that locks a locked portion formed along a longitudinal direction of the band body in a removal direction. lid. The lid body and the band body are separate bodies, and the band body and the lock part are integrally formed as a binding band,
The closure lid according to claim 3, wherein a holding portion for holding the binding band is provided on the back surface of the lid.   5. The structure according to claim 1, wherein when the recess is closed, the binding portion is adjacent to the engagement shaft and is tightly bound by the band portion. The closure lid according to any one of the above.   6. The lid according to claim 1, further comprising an insertion hole through which a tool is inserted from the surface side in order to release the binding between the binding portion and the engagement shaft. The closure lid according to any one of the above.   The closing lid according to claim 6, wherein the insertion hole is formed at a position corresponding to the binding portion.   8. The structure according to claim 6, wherein when the binding between the binding portion and the engagement shaft is released, the binding portion is configured to be broken with a tool through the insertion hole. Occlusion lid. It is a lid of the closure lid according to any one of claims 1 to 8,
The recess can be closed from the upper surface side of the manhole cover, and includes a binding portion formed on the back surface side,
A lid body in which the binding portion and the engagement shaft are bound by a band body in the recess in a state where the recess is closed with the lid body. A recess formed in the upper surface so that a tool for opening and closing the manhole cover can be inserted;
An engagement shaft for engaging the tool formed in the recess;
A recess closing manhole cover comprising: the closing lid according to any one of claims 1 to 8, wherein the recess is closed through the engagement shaft.

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