JP6348399B2 - Drain cap - Google Patents

Description

  The present invention relates to a drain cap attached to a drainage port of a building.

  In general, drainage openings (drains) are provided on the roofs of buildings such as buildings and condominiums and on the verandas of each floor so that rainwater can be drained. In this kind of drainage outlet, solid leaves such as fallen leaves, twigs, paper or vinyl that accompany rainwater, prevention of falling of the object due to the drainage outlet being exposed, maintaining aesthetics, etc. A drain cap is attached from the viewpoint.

  FIG. 8 is a side view showing an example of a conventional drain cap 101. The drain cap 101 includes a cap body 103 that closes the drain port 102 so that the water can pass therethrough. The cap body 103 has a hat shape as shown in the figure, and a plurality of openings (not shown) are formed to allow rainwater to pass therethrough. The cap body 103 has a loop spring plate 105 fixed thereto via a support bar member 104. The loop spring plate 105 has a larger diameter than the diameter of the drain port 102.

JP 2011-6934 A

  However, the conventional drain cap 101 shown in FIG. 8 needs to be inserted into the drain port 102 by bending the loop spring plate 105 smaller than the diameter of the drain port 102 in order to be attached to the drain port 102. There was room for improvement.

  Therefore, an object of the present invention is to provide a drain cap that can be easily attached to a drain outlet.

  The drain cap of the present invention includes a cap main body that allows a drain outlet to pass through, a support rod member having one end fixed to the cap main body, and the other end inserted into the drain outlet, and A movable member that is movably engaged in the longitudinal direction, and a flexible member that is fixed to the other end of the movable member and the support bar member in a bow shape so as not to protrude beyond the diameter of the drain port; The rod that moves the moving member in the longitudinal direction of the support rod member to bend the flexible member, and the rod that is bent and contacts the inner peripheral surface of the drain port And a locking mechanism for fixing.

  The flexible member is characterized by having a bending portion that is bent and deformed toward the moving member side, and a highly rigid portion that is higher in rigidity than the bending portion on the other end portion side of the support bar member.

  According to the drain cap of the present invention, it is easily attached to the drain outlet.

It is a side view which shows a mode that the drain cap of this invention was fixed to the drain outlet. (A) is sectional drawing which shows a movement recessed part material, (B) is the IIB-IIB arrow line view of FIG. 2 (A), and is a top view which shows a movement recessed part material. It is a figure which shows an example of a flexible strip | belt-shaped member. (A) is sectional drawing which shows a fixed convex member, (B) is the IVB-IVB arrow line view of FIG. 4 (A), and is a figure which shows the top view of a fixed convex member. It is a side view which shows a mode before the drain cap of this invention is fixed to a drain outlet. (A) is a side view which shows a mode that the rod was pushed down from the state of FIG. (B) is a side view which shows a mode that the rod was further pushed down from the state of FIG. 6 (A). It is a side view which shows the other Example of a drain cap. It is the side view which showed an example of the conventional drain cap.

  Hereinafter, an example of a mode for carrying out the present invention (hereinafter referred to as an example) will be described with reference to FIGS. FIG. 1 is a side view showing a state in which the drain cap 1 of the present invention is fixed to the drain port 21. FIG. 5 is a side view showing a state before the drain cap 1 of the present invention is fixed to the drain port 21.

  The drain cap 1 includes a cap body 2, a support bar member 3, a moving concave member 4 (moving member), a flexible belt-like member 5 (flexible member), a rod 6, a moving convex member 7, A push-up rod 8, a coil spring 10, and a lock mechanism 11 are provided.

  The cap body 2 has a hat shape having a mortar portion and a flange portion. When the drain cap 1 is attached to the drain port 21, the cap body 2 becomes a portion that closes the drain port 21 so as to allow water to flow. The cap body 2 has four support arm portions 2 a that support the support bar member 3.

  The support bar member 3 has a cylindrical shape as a whole. The support bar member 3 has one end 3 a fixed to the center of the top of the cap body 2 and the center fixed to the support arm 2 a of the cap body 2. When the drain cap 1 is attached to the drain port 21, the support rod member 3 is a portion where the other end 3 b side is inserted into the drain port 21.

  Further, the support rod member 3 is formed with an inverted T-shaped engagement hole 3c on the outer periphery on the one end 3a side with respect to the central portion in the longitudinal direction, and the outer periphery on the other end 3b side with respect to the central portion in the longitudinal direction. Four guide long holes 3d formed so that the longitudinal direction is along the long axis are formed at equal intervals in the circumferential direction. Inside the support bar member 3, a part of the rod 6, the moving convex member 7, the push-up rod 8, and the coil spring 10 are arranged from the one end 3 a side toward the other end 3 b side. .

  The moving recess material 4 will be described with reference to FIGS. 2 (A) and 2 (B). 2A is a cross-sectional view showing the moving recess member 4, and FIG. 2B is a sectional view taken along the arrow IIB-IIB in FIG. 2A and showing the moving recess member 4. FIG. .

  The moving recess 4 has a main body 4a in which four recesses 4c are formed at equal intervals from a cylindrical shape, and four fixed portions 4b extending in the radial direction from the main body 4a. The moving recess member 4 is engaged so as to be movable with respect to the longitudinal direction of the support bar member 3.

  The flexible strip member 5 will be described with reference to FIG. FIG. 3 is a diagram illustrating an example of the flexible belt-like member 5. The flexible belt-like member 5 is composed of, for example, a belt-like leaf spring member in which stainless steel is covered with a resin, and has flexibility.

  The flexible belt-like member 5 includes a bending portion 5a that is a portion that is bent and deformed, and a high-rigidity portion 5b that is higher in rigidity than the bending portion 5a. The high-rigidity portion 5b has higher rigidity than the bending portion 5a, for example, by overlapping stainless steel in the thickness direction. The high-rigidity portion 5b may be subjected to bead processing to increase the strength as necessary.

  As shown in FIG. 5, the flexible belt-like member 5 has a flexible portion 5 a fixed to the fixed portion 4 b of the moving recess member 4 and a high-rigidity portion 5 b fixed to the other end portion 3 b of the support rod member 3. It is fixed like a bow so that it does not protrude beyond the diameter of the mouth 21. Then, the flexible belt-like member 5 includes a bending portion 5a that bends and deforms on the moving concave member 4 side, and a high-rigidity portion 5b that is higher in rigidity than the bending portion 5a on the other end portion 3b side of the support bar member 3. Have. And the flexible strip | belt-shaped member 5 is fixed with respect to the fixing | fixed part 4b of the movement recessed part material 4, and the other end part 3b of the support bar member 3, for example so that it may protrude in the four directions of the support bar member 3. FIG.

  When the flexible belt-like member 5 is fixed in this manner, it extends from the other end portion 3b of the support bar member 3 so as to be inclined in a straight line so that the high-rigidity part 5b is separated from the support bar member 3. It extends while curving so that it becomes the bending part 5a and it approaches the support bar member 3 after it is farthest from the support bar member 3.

  In addition, the flexible belt-like member 5 bends and deforms so as to expand or contract in a direction perpendicular to the longitudinal direction of the support bar member 3 (the radial direction of the support bar member) as the moving recess member 4 moves. That is, when the moving concave member 4 moves to the other end 3 b side of the support bar member 3, it is bent and deformed so as to spread in a direction perpendicular to the longitudinal direction of the support bar member 3. Further, when the moving concave member 4 moves to the one end 3 a side of the support bar member 3, it is bent and deformed so that the direction perpendicular to the longitudinal direction of the support bar member 3 contracts.

  The rod 6 is a rod-shaped member having a grip portion 6a on one end side. The rod 6 is formed with a cylindrical engaging protrusion 6c that protrudes in a direction orthogonal to the longitudinal direction. The rod 6 is disposed inside the one end portion 3a of the support bar member 3 so that the gripping portion 6a is exposed to the outside. At this time, the engaging projection 6 c of the rod 6 is engaged with the engaging hole 3 c of the support bar member 3. Then, the rod 6 can move with respect to the longitudinal direction of the support bar member 3 and can rotate with respect to the circumferential direction by the engagement protrusion 6c moving along the engagement hole 3c. Further, the push-up rod 8 is disposed inside the support rod member 3 on the other end 3 b side via a coil spring 10.

  The moving convex member 7 will be described with reference to FIG. FIG. 4A is a cross-sectional view showing the moving convex member 7. FIG. 4B is a view taken along the arrow IVB-IVB in FIG. 4A, and is a diagram illustrating a plan view of the moving convex member 7.

  The moving convex member 7 has four plate-like convex portions 7c that protrude in the radial direction from the cylindrical main body. The moving convex member 7 has a rod insertion hole 7a into which the other end of the rod 6 is inserted at one end in the axial direction, and a push-up rod insertion hole 7b into which one end of the push-up rod 8 is inserted into the other end in the axial direction. And are formed.

  The moving convex member 7 is movably disposed inside the support bar member 3. At this time, the plate-like convex portion 7 c of the movable convex member 7 protrudes outside the support rod member 3 from the guide elongated hole 3 d. The plate-like convex portion 7 c of the movable convex member 7 protruding from the guide long hole 3 d to the outside of the support bar member 3 is engaged with the concave portion 4 c of the movable concave member 4. Further, in the movable convex member 7, the rod 6 is inserted into the rod insertion hole 7a, and the push-up rod 8 is inserted into the push-up rod insertion hole 7b.

  The lock mechanism 11 will be described with reference to FIGS. The lock mechanism 11 is a mechanism that locks the rod 6 so that the rod 6 cannot move in the longitudinal direction of the support bar member 3. The lock mechanism 11 includes an engagement protrusion 6 c of the rod 6 and a T-shaped engagement hole 3 c of the support bar member 3.

  FIG. 5 shows a state before the drain cap 1 is fixed to the drain port 21, and the rod 6 is movable in the longitudinal direction with respect to the support rod member 3. This state is called a lock release state. Then, from the state shown in FIG. 5, the rod 6 is pushed down until the engaging projection 6c comes into contact with the T-shaped engaging hole 3c, and then the rod 6 is rotated with respect to the shaft so that the engaging projection 6c is supported by the support rod member. When moved in the circumferential direction 3, the state shown in FIG. In the state of FIG. 1, the rod 6 is locked so that it cannot move in the longitudinal direction of the support bar member 3. This state is called a locked state.

  The manner in which the drain cap 1 is fixed to the drain port 21 will be described with reference to FIGS. 5, 6, and 1. FIG. 6A is a side view showing a state in which the rod 6 is pushed down from the state of FIG. FIG. 6B is a side view showing a state in which the rod 6 is further pushed down from the state of FIG.

  As shown in FIG. 5, when fixing the drain cap 1 to the drain port 21, first, the support bar member 3 is inserted into the drain port 21. At this time, the lock mechanism 11 is in an unlocked state. In the drain cap 1, when the lock mechanism 11 is in the unlocked state, the push-up rod 8 pushes the moving convex member 7 upward in the figure by the coil spring 10, and the moving convex member 7 and the moving concave member 4 are separated. In a normal state in which the moving convex member 7 and the moving concave member 4 are separated from each other, the flexible belt-like member 5 does not protrude beyond the diameter of the drain port 21.

  Next, when the rod 6 is pushed down, the moving convex member 7 is pushed down by the rod 6. Then, the moving concave member 4 is pushed down by the moving convex member 7, and the flexible belt-like member 5 is bent and deformed as the moving concave member 4 is lowered. That is, the rod 6 bends the flexible belt-like member 5 by moving the moving concave member 4 in the longitudinal direction of the support bar member 3 via the moving convex member 7.

  As shown in FIG. 6 (A), when the rod 6 is pushed down, the flexible belt-like member 5 spreads in the radial direction of the drain port 21, and first, the flexible portion 5 a of the flexible belt-like member 5 has the drain portion 21. It touches the inner peripheral surface of. At this time, the high-rigidity part 5b having higher rigidity than the bending part 5a does not bend and maintains a linear shape. Further, the contact portion of the bent portion 5 a is in surface contact with the contact portion of the inner peripheral surface of the drain port 21. Here, an angle formed by the highly rigid portion 5b of the flexible belt-like member 5 and a virtual straight line extending in a direction (horizontal direction) orthogonal to the longitudinal direction of the support bar member 3 is α.

  As shown in FIG. 6B, when the rod 6 is further pushed down, the angle formed by the high-rigidity portion 5b of the flexible belt-like member 5 and the imaginary straight line extending in the horizontal direction becomes β smaller than α, and the bending portion 5a The area in contact with the inner peripheral surface of the drain port 21 increases. At this time, the drain cap 1 generates a force that pulls downward from the flexible strip-shaped member 5 as the high-rigidity portion 5b of the flexible strip-shaped member 5 tilts.

  As shown in FIG. 1, after the rod 6 is further pushed down, the rod 6 is rotated to bring the lock mechanism 11 into the locked state. As a result, the rod 6 cannot move in the longitudinal direction of the support bar member 3, and the state of the flexible belt-like member 5 is maintained. That is, the lock mechanism 11 fixes the rod 6 in a state where the flexible belt-like member 5 is bent and brought into contact with the inner peripheral surface of the drain pipe.

  Another embodiment of the drain cap 1 will be described with reference to FIG. FIG. 7 is a side view showing another embodiment of the drain cap 1. The drain cap 1 has the same configuration as the drain cap 1 of the above-described embodiment except for the coil spring 12, the small diameter portion 3e of the support bar member 3, and the guide rod 18. The same reference numerals are given to the same components as those in the above-described embodiment, and the description that overlaps the description of the above-described embodiment is omitted.

  As illustrated, the coil spring 12 has one end fixed to the rod 6 and the other end fixed to the inner wall of the support bar member 3. When the rod 6 is pushed down by the gripping portion 6a, the coil spring 12 extends along with this, and when the rod 6 is stopped from being pushed down, the spring 6 returns the rod 6 to its original position. That is, when the rod 6 is released from the locked state, it returns to its original position by the restoring force of the coil spring 12.

  The support bar member 3 has a small-diameter portion 3e in which the inner diameter of the other end side 3b is smaller than that of the other portion. The small diameter portion 3e guides the guide rod 18.

  Further, the guide rod 18 has a distal end fitted into the rod insertion hole 7 b of the movable convex member 7, and a proximal end is disposed in the small diameter portion 3 e of the support rod member 3. As a result, the guide rod 18 moves while the proximal end side is guided by the small diameter portion 3e as the moving convex member 7 moves. The guide rod 18 also functions as a reinforcing member that increases the rigidity of the hollow support bar member 3.

  According to the drain cap 1 of the present invention, the flexible belt-like member 5 does not protrude beyond the diameter of the drain port 21 when attached to the drain port 21, and is flexible by pushing down the rod 6 after insertion. The strip-shaped member 5 fixes the drain cap 1 to the drain port 21. This makes it easier to attach to the drain port 21 as compared to the conventional drain cap 1.

  In addition, according to the drain cap 1 of the present invention, the flexible belt-like member 5 generates not only a force in the radial direction of the drain pipe but also a force to draw in the axial direction of the drain pipe. Thereby, compared with the conventional drain cap 100, it is attached with a strong fixing force.

  In addition, the drain cap of this invention is not limited only to the above-mentioned Example. For example, although the high rigidity part 5b demonstrated the aspect whose rigidity is higher than the bending part 5a in the aspect which raises rigidity rather than the bending part 5a by superimposing stainless steel in the thickness direction, it is not limited to this. For example, the rigidity may be made higher than that of the bending portion 5a by pressing so as to wave in the width direction of the high-rigidity portion 5b.

  Moreover, although the flexible strip | belt-shaped member 5 demonstrated the structure arrange | positioned around the support bar member 3, it is not limited to this. For example, one or two, three, five, six, or the like may be arranged.

  Moreover, although the flexible strip | belt-shaped member 5 demonstrated the structure by which the bending part 5a was fixed to the fixing | fixed part 4b of the movement recessed part material 4, and the highly rigid part 5b were fixed to the other end part 3b of the support bar member 3, it is limited to this. Not. The flexible belt-like member 5 may be fixed so that the high-rigidity part 5 b is fixed to the fixing part 4 b of the moving recess member 4 and the bending part 5 a is inverted to the other end part 3 b of the support bar member 3.

  Moreover, you may have as a structure all the coil springs 10, the coil springs 12, and the small diameter parts 3e combining an Example and another Example.

  The drain cap of the present invention can be variously modified without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Drain cap 2 Cap main body 3 Support bar member 3a One end part 3b Other end part 3e Small diameter part 4 Moving recessed part material (moving member)
5 Flexible strip member (flexible member)
5a Deflection part 5b High rigidity part 6 Rod 11 Lock mechanism 18 Guide rod 21 Drainage port

Claims (2)

A cap body that closes the drain opening so that water can flow through;
One end side is fixed to the cap body, and the other end side is inserted into the drain port, a support bar member,
A movable member movably engaged with the longitudinal direction of the support bar member;
A flexible member fixed to the other end of the moving member and the support bar member in a bow shape so as not to protrude beyond the diameter of the drain port;
A rod for moving the moving member in the longitudinal direction of the support bar member to bend the flexible member;
A drain cap comprising: a lock mechanism for fixing the rod in a state where the flexible member is bent and brought into contact with the inner peripheral surface of the drain port. The flexible member is
A bending portion that bends and deforms toward the moving member; and
The drain cap according to claim 1, further comprising: a high-rigidity portion having higher rigidity than the bending portion on the other end portion side of the support bar member.

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