JP2007002605A - Ditch lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ditch lid capable of preventing the generation of a crack and separation in a surrounding pavement material and surely preventing the jumping up of the ditch lid even if a vehicle or the like passes through over the ditch lid. <P>SOLUTION: A holding frame 2 has pin supporting members 6 and 8 projected inward of the frame from the side wall thereof, and pin storage sections of movable pins 10 and 12 are fixed to the pin supporting members 6 and 8 to place the whole of the movable pins 10 and 12 in the holding frame 2. While a pin storage section of an interlocking pin 30 is fixed to a position opposite to hinge pins 10 and 12 of a grating 20, an interlocking plate 36 having an insertion hole detachably inserting a pin of the interlocking pin 30 is fixed to the bottom plate 40 of the holding frame 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a groove lid having a receiving frame fixed to an upper end of an opening such as a snow drain groove, a water collecting trough, and a side groove, and a grating that is pivotably connected to the receiving frame by a hinge.

  FIG. 4 is a plan view of what is conventionally known as this type of groove lid (see Patent Document 1). A fixed pin 64 and a movable pin 66 constituting a hinge are attached to both side walls of the receiving frame 62 in which the grating 60 is fitted. The fixing pin 64 is provided with a head 64b at one end of the pin 64a, and is fixedly inserted into the side wall of the receiving frame 62 from the outside. The movable pin 66 includes a pin 66a and a pin housing portion 66b that receives the pin 66a so that it can be inserted and removed.

  As shown in FIG. 5, a spring 66c that urges the pin 66a in a direction in which the pin 66a protrudes from the pin housing 66b is mounted in the pin housing 66b. The pin housing portion 66b is fixed to the side wall of the receiving frame 62, and the pin 66a protruding from the pin housing portion 66b passes through the pin hole 68 formed in the side wall of the receiving frame 62.

  On the other hand, as shown in FIG. 4, the grating 60 is formed with hinge holes 70 and 72 through which the fixed pin 64 and the movable pin 66 pass. In order to attach the grating 60 to the receiving frame 62, first, the fixed pin 64 is inserted into the hinge hole 70 of the grating 60, and then the pin 66a of the movable pin 66 is pushed into the pin accommodating portion 66b against the action of the spring 66c. In this state, the grating 60 is mounted in the receiving frame 62. When the pin 66a of the movable pin 66 and the corresponding hinge hole 72 are opposed to each other by mounting, the pin 66a is inserted into the hinge hole 72 by the urging force of the spring 66c, and the grating 60 is pivotally connected to the receiving frame 62 so as to be opened and closed. The

6 is a cross-sectional view of the receiving frame 62 taken along line AA in FIG. The receiving frame 62 includes a side wall 74 and a bottom plate portion 76 that is folded back inward from the lower end of the side wall 74 and forms an L-shaped cross section together with the side wall 74.
Japanese Patent Laid-Open No. 10-140642 (page 3, FIG. 2, FIG. 3)

  In the conventional groove lid, since the fixing pin 64 is fixed in a state of passing through the side wall of the receiving frame 62, the head portion 64b protrudes from the outer surface of the receiving frame 62 side wall. Further, since the movable pin 66 is also attached to the side wall of the receiving frame 62 from the outside, the pin accommodating portion 66b protrudes from the outer surface of the side wall of the receiving frame 62. For this reason, when a pavement material is laid around the receiving frame 62, the pavement material on the head portion 64b of the fixed pin 64 or the pin housing portion 66b of the movable pin 66 is likely to crack or peel off. In particular, since the pin housing portion 66b protrudes larger than the head portion 64b of the fixed pin 64, the pavement material is likely to crack at the location of the pin housing portion 66b. A first object of the present invention is to provide a groove lid that is less prone to defects such as cracks and peeling on the pavement around the receiving frame.

  In addition, the groove lid may be installed at a place where a vehicle or the like passes. Generally, the grating 60 is less likely to jump up from the receiving frame 62 even when a vehicle or the like passes through the upper surface due to its own weight. However, a groove lid that can more reliably prevent the grating 60 from jumping up is desired. The second object of the present invention is to provide a groove lid that can reliably prevent the jumping of the grating.

The first invention relates to a groove lid that achieves the first object, and includes a receiving frame, a grating attached to the receiving frame, and one or a plurality of the two that are pivotally connected so that the grating can be opened and closed with respect to the receiving frame. And the hinge pin constituting the hinge is characterized in that the entire pin is disposed within the frame of the receiving frame.
The hinge pins of the present invention are provided at a plurality of locations, and some or all of them are fixed pins or movable pins.

  In a preferred invention, the hinge is composed of a pair of hinge pins, and one of them is a movable pin, so that the grating is attached to and detached from the receiving frame in the same manner as in the prior art. The fixing pin may be headed in the form of, for example, a bolt or a screw, or may be headless. When the fixing pin is fixed to the receiving frame or the grating, for example, one end or the head thereof is the receiving frame side wall or Directly attached to the corresponding part of the grating.

On the other hand, the movable pin is mounted on the pin accommodating portion fixed to the receiving frame, the pin accommodated in the pin accommodating portion, the pin accommodating portion, and the pin from the pin accommodating portion. And a spring biased in the protruding direction.
In the present invention, the whole hinge pin means, for example, the whole including the head in the case of a headed fixed pin, and the whole including the pin accommodating portion in the case of a movable pin.

  3A to 3C show a specific example in which the hinge pins are arranged in the frame of the receiving frame. FIG. 3A shows the receiving frame 50 facing a pair of pin support members 51 protruding into the frame. The pin accommodating portion 55a of the movable pin 55 is fixed to each support member 51, and the grating 52 is pivoted by the pin 55b of each movable pin 55 so that the entire movable pin 55 is disposed in the frame of the receiving frame 50. For example, FIG. 3B shows that the pin receiving portion 54a of the movable pin 54 is fixed to one of the support members 51 and 51, and the fixing pin 54 is fixed to the other, and the grating 52 is pivotally connected. FIG. 3C shows an example in which the whole 55 is disposed within the frame of the receiving frame 50, and FIG. In these illustrated examples, the pins are arranged so that the pin tips of each other face each other. However, as shown in FIG. 1, the pins may be arranged so that the pin tips of each other face opposite to each other.

  The second invention relates to a groove lid that achieves the second object, and includes a receiving frame, a grating attached to the receiving frame, and a hinge that pivots both of them so that the grating can be opened and closed with respect to the receiving frame. In the groove lid, a locking pin that can be slid is attached to a receiving frame or a grating that is separated from the hinge, and the pin tip of the pin is inserted when the grating is closed in the grating or the receiving frame. It is characterized in that a locking plate in which a hole is formed or in which an insertion hole is formed is fixed, and in a preferred invention, the locking pin is accommodated in a pin housing part fixed to the receiving frame or the grating so that it can be inserted and removed, It is urged in a direction protruding from the pin housing portion by a spring mounted on the pin housing portion.

  In the above preferred invention, the pin accommodating portion of the locking pin may be fixed to the outer surface of the side wall of the receiving frame, but in a more preferred invention, for example, a pin support member protruding into the frame is provided on the receiving frame or the grating, By attaching the pin housing portion to the pin support member, the entire locking pin including the pin housing portion is disposed within the frame of the receiving frame.

  In another preferred invention, as in the first invention, the hinge is constituted by one or a plurality of hinge pins that pivotally connect the grating and the receiving frame, and the whole hinge pins constituting the hinge are arranged in the frame of the receiving frame.

  According to the first invention, when the hinge pin is, for example, a headed fixed pin, the head is not movable from the outer surface of the receiving frame side wall when the head is a movable pin. Since the whole hinge pin constituting the hinge is arranged in the frame of the receiving frame, it is possible to prevent the pavement from being cracked or peeled off when a pavement is laid around the receiving frame.

  According to the second invention, when the grating is closed, the pin of the locking pin is inserted into the insertion hole, so that the grating is locked and prevented from opening. However, the jumping of the grating can be surely prevented. In addition, when the locking pin is urged in a direction protruding from the pin housing portion by the spring attached to the pin housing portion, the locking pin is pushed into the pin housing portion against the action of the spring, so that the grating Since the lock is released, it is possible to open and close the grating when cleaning the snow drain groove, water collecting trough, side groove and the like. Further, when the entire locking pin and hinge pin are arranged in the frame of the receiving frame, as in the first invention, when paving material is laid around the receiving frame, it is prevented that the pavement material is cracked or peeled off. Can do.

  FIG. 1 is a plan view of a groove lid according to an embodiment of the present invention. A steel grating 20 having a rectangular shape in plan view is mounted in a steel receiving frame 2 having a rectangular shape in plan view. A pair of pin support members 6 and 8 projecting inward from the frame are fixed to the central portion of the side wall 4 of the receiving frame 2. The pair of pin support members 6 and 8 are formed by forming through holes 6a and 8a in plate-like bodies, respectively, and are arranged facing each other. First and second movable pins 10 and 12 as hinge pins constituting a hinge are attached to the pair of pin support members 6 and 8, respectively.

  Like the movable pin shown in FIG. 5, the first and second movable pins 10 and 12 are each arranged in a pin, a pin accommodating portion in which the pin can be inserted and removed, and the pin accommodating portion. Springs that are biased in the direction of projecting from the pins, the pin housing portions face each other and are fixed to the pin support members 6, 8, and the respective pins are through holes 6 a, 8 a of the pin support members 6, 8, respectively. Protruding through.

  In the present embodiment, as shown in the drawing, the first and second movable pins 10 and 12 are attached to pin support members 6 and 8 protruding inward of the receiving frame 2, and the entirety including the pin accommodating portion is inward of the receiving frame 2. In.

  On the other hand, the grating 20 is formed with hinge holes 22, 24 through which the pins are detachably inserted at locations facing the first and second movable pins 10, 12. The hinge holes 22 and 24 may be formed in the bar 28 constituting the grating 20, or a hinge plate in which the hinge holes 22 and 24 are formed may be provided separately from the grating 20. When the first and second movable pins 10, 12 are inserted through the hinge holes 22, 24, the grating 20 can be opened / closed around the first and second movable pins 10, 12.

  Further, as the locking pin, the third movable pin 30 similar to the movable pin shown in FIG. 5 is separated from the first and second movable pins 10 and 12 and the grating 20 at a position facing the pins 10 and 12. It is fixed to. Specifically, a pin support member 32 protruding inward is fixed to the end plate 26 at a position facing the first and second movable pins 10 and 12, and the third movable pin 30 is fixed to the pin support member 32. The pin housing is fixed. On the other hand, a locking plate 36 having an insertion hole 34 through which the pin of the third movable pin 30 is detachably inserted is fixed to the receiving frame 2.

  2 is a perspective view of the receiving frame of the groove lid shown in FIG. The receiving frame 2 includes a side wall 2 and a bottom plate 40 that protrudes inward from the lower end of the side wall 2 and forms an L-shaped cross section together with the side wall 2, and the locking plate 36 is fixed on the bottom plate 40.

  When attaching the grating 20 to the receiving frame 2, the hinge holes 22 and 24 of the grating 20 are first and first respectively pushed in the state where the pins of the first and second movable pins 10 and 12 are pushed against the action of the spring. One side of the grating 20 is applied to the receiving frame 2 so as to face the pin ends of the second movable pins 10 and 12. As a result, the pins of the first and second movable pins 10 and 12 are inserted into the hinge holes 22 and 24, respectively, by the action of the spring.

  Next, the grating 20 is mounted on the receiving frame 2 in a state where the pin of the third movable pin 30 is pushed in against the action of the spring. When the pin of the third movable pin 30 is inserted into the locking hole 34 of the locking plate 36 by the biasing force of the spring, the grating 20 is locked to the receiving frame 2 and the grating 20 is prevented from opening. On the other hand, when opening the grating 20, the pin of the third movable pin 30 is pushed in from the distal end side, and the locking of the grating 20 to the receiving frame 2 is released.

  According to the present embodiment, the grating 20 can be locked to the receiving frame 2 so as not to move. Therefore, even when a vehicle or the like passes through the upper surface of the grating 20, the jumping and opening of the grating 20 can be reliably prevented. Can do. Further, since the grating 20 can be easily and quickly locked with respect to the receiving frame 2 by pushing the pin of the third movable pin 30, the grating 20 is opened and closed during cleaning of a snow drain groove, a water collecting trough, a side groove and the like. Can be done easily. Moreover, since the first to third movable pins 10, 12, and 30 are all arranged in the frame of the receiving frame 2, it is possible to eliminate protrusions from the outer surface of the side wall of the receiving frame 2, and paving around the receiving frame 2. When the material is spread, it is possible to prevent the pavement material from being cracked or peeled off.

  In the groove lid of the above embodiment, the third movable pin 30 is fixed to the grating 20, but in another embodiment, the third movable pin 30 is fixed to the receiving frame 50, and the pin of the movable pin 30 is inserted into the insertion hole 34 on the grating 20 side. It is inserted so that it can be engaged and disengaged.

  The present invention can be applied to groove lids that are attached to openings such as snow drain holes, water collecting basins, and side grooves.

It is a top view of the groove lid by embodiment of this invention. It is a perspective view of a receiving frame. It is a schematic plan view of the groove cover by another embodiment. It is a top view of the grating with a receiving frame by a prior art. It is sectional drawing of a movable pin. It is sectional drawing of the receiving frame in the AA line of FIG.

Explanation of symbols

2 .. Receiving frame 4 .. Side wall 6 of receiving frame, 8... Pin support member 6 a, 8 a... Through hole 10 1, first movable pin 12, 2nd movable pin 20, grating 22, 24,. Hinge hole 26, end plate 28, strip bar 30, third movable pin 32, pin support member 34, insertion hole 36, locking plate 40, bottom plate 42 of the receiving frame, anchor member 50 .. Receiving frame 51.. Pin support member 52. Grating 53. Hinge hole 54. Movable pin 55. Fixed pin 66 a Pin 66 b Pin holding portion 66 c Spring

Claims (4)

  A hinge is formed in a groove lid having a receiving frame, a grating mounted on the receiving frame, and a hinge constituted by one or a plurality of hinge pins that pivot both of them so that the grating can be opened and closed with respect to the receiving frame. The hinge pin is a groove lid characterized in that the entire pin is disposed within the frame of the receiving frame.   In a groove lid that has a receiving frame, a grating mounted on the receiving frame, and a hinge that pivots both of the gratings so that the grating can be opened and closed with respect to the receiving frame, it can be slid to the receiving frame or the grating at a location away from the hinge And a locking plate on which the pin tip of the pin is inserted is fixed to the grating or the receiving frame when the grating is in a closed state. A groove lid characterized by.   The locking pin includes a pin housing portion that is fixed to the receiving frame or the grating, a pin that is mounted so as to be able to be inserted into and removed from the pin housing portion, and a spring that is mounted on the pin housing portion and biases the pin in a direction protruding from the pin housing portion. The groove lid according to claim 2, comprising:   The groove cover according to claim 2 or 3, wherein the hinge and the locking pin are entirely disposed within the frame of the receiving frame.

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