JP2572918Y2 - Drainer mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a mounting structure for mounting a drainage device such as a tubular drainage main body for storing a drainage trap to a sink such as a sink or a sink, particularly, at a peripheral portion of a drainage mounting hole of the sink. The present invention relates to a drainage mounting structure in which a flange provided on an upper outer peripheral side of a drainage body is placed in contact with the drainage body, and the drainage is fixed from below the sink.

[0002]

2. Description of the Related Art Conventionally, as a structure for attaching a drain to a sink, a method of screwing with a nut to be screwed to the drain has been adopted. However, since the diameter of this screw portion is large, The screwing torque was large, and there was a problem in workability. Therefore, in order to improve the workability when mounting the drainage device, a method using an engagement lever has been proposed as Japanese Utility Model Laid-Open No. 2-42974.

[0003] As shown in FIG.
The tubular body (1) of the drainer inserted into the mounting hole of (S)
With the tightening ring (3) fitted onto the body (1) from below, the engaging lever (4) attached to the tightening ring (3) is used.
0) (40), the flange (2) at the upper end of the main body (1) and the tightening ring (3) are tightened in the facing direction, and the main body (1) is attached to the mounting hole of the sink (S). It is attached to the periphery.

An annular concave portion (11) having a C-shaped cross section is formed on the outer peripheral surface of the main body (1) below the flange (2), and the outer concave portion is fitted from below the main body (1). Tightening ring
When (3) is in contact with the bottom surface of the sink (S), the annular recess (11) is located on the inner peripheral side of the tightening ring (3). Slits opening downward are formed at a plurality of locations of the tightening ring (3).
A pair of mutually parallel ribs (31) and (31) is formed to project, and an engagement projection (41) press-fit into the annular recess (11) is formed between the ribs (31) and (31). The engaging lever (40) as an engaging body provided is pivotally supported so as to be vertically swingable.

As shown in FIG. 1, the engaging projection (41) has a substantially triangular shape as a whole, and is formed by a shaft passing through the upper portions of the ribs (31) and (31). The upper end of 41) is pivotally supported. The tip of the engaging projection (41) on the side of the annular recess (11) is formed in a substantially semicircular shape adapted to the shape of the lower part of the annular recess (11). Will be pressed into the lower portion of the annular concave portion (11) as described later. Further, a lever portion is integrally formed on the side of the engagement lever (40) opposite to the shaft support portion. still,
A packing (P) is interposed between the flange (2) and the sink (S).

In this device, when attaching the main body (1) to the sink (S), the lever portions of the engaging levers (40) (40) are connected to the main body (1).
(1) side, the engaging projections (4
The tip of (1) fits into the annular recess (11) such that the lower curved surface of the annular recess (11) is pressed down. As a result, the main body (1) is pressed downward, and the tightening ring (3) is pressed upward, that is, the flange (2) and the tightening ring (3) are pressed against each other. The peripheral portion of the sink (S) and the packing (P) interposed between (3) and (3) are squeezed and held.

However, when the lower end of the engaging projection (41) is pushed in a substantially horizontal direction, the lower part of the annular recess (11)
Since the curved surface is inclined downward toward the outside so as to be pushed downward, the direction of the pressing force from the annular concave portion (11) acting on the engagement projection (41) is inclined, and The component force is in the direction of pushing the engagement protrusion (41) to the outside of the main body (1), that is, the direction of unlocking the engagement lever (40). Easy to come off.

[0008]

[Technical problem] The present invention has been made in view of the above-mentioned point, and has been made in consideration of "a flange (2) extending from an upper end of a main body (1) inserted through a mounting hole at a bottom of a sink (S). A tightening ring (3) externally inserted from below the main body (1) is pressed in a facing direction by a plurality of engaging bodies interposed between the main body (1) and the tightening ring (3). Pressurization to secure the airtightness between the peripheral edge of the mounting hole of the sink (S) and the flange (2). ' Is the subject.

[0009]

[Technical Means] The technical means of the present invention taken to solve the above technical problem is as follows: "Each engaging body is rotatably supported by the outer periphery of the body of the main body (1), A cam body (4) having a cam portion (4a) partly in contact with the lower surface of the tightening ring (3), and the outer peripheral shape of the cam portion (4a) is the smallest at a distance from the shaft support portion. From the small-diameter portion (42) to the largest-diameter portion (43) where the distance is the largest, the shape changes smoothly, and the distance from the minimum-diameter portion (42) to the shaft support portion is in contact with the peripheral edge of the mounting hole. Tightening ring (3)
The distance from the lower surface of the tightening ring (3) to the shaft support is set to be smaller than the distance from the lower surface of the tightening ring (3) to the shaft support. Is set slightly larger. "

[0010]

The above technical means of the present invention operates as follows. With this device, when attaching the main body (1) to the sink (S), insert the main body (1) into the ejector mounting hole of the sink (S), and fit the fastening ring (3) to the main body (1). After mounting, the minimum diameter portion (42) of the cam portion (4a) of each cam body (4) faces the lower surface of the tightening ring (3). Then, from this state, the cam body (4) is rotated so that the maximum diameter portion (43) of the cam portion (4a) is at its uppermost position.

[0011] The cam body (4) extends from the shaft support portion to the maximum diameter portion.
The distance to (43) is set slightly larger than the distance from the lower surface of the tightening ring (3) in contact with the peripheral edge of the mounting hole to the shaft support.
First, the middle of the minimum diameter portion (42) and the maximum diameter portion (43) comes into contact with the lower surface of the tightening ring (3), and the lower surface is pressed upward. Then, when the cam body (4) is further rotated, finally,
The pressure point coincides with the maximum diameter portion (43), and in this state, the tangent to the pressure point is orthogonal to the direction of the force acting on the cam body (4), and the cam body (4) No component force acts in the turning direction of. In this state, the cam body (4) is in a locked state and maintains this state.

Further, since the distance from the shaft support to the maximum diameter portion (43) is set as described above, in this state, the main body (1) is lowered and the tightening ring (3) is raised. And the periphery of the mounting hole of the sink (S) is clamped between the flange (2) and the tightening ring (3), so that the main body (1) is mounted on the sink (S) and The connection between the flange (2) and the sink (S) is sealed.

Further, in the above state, the pressing force between the flange (2) and the sink (S) is reduced, that is,
(2) Even if external force acts in the direction away from the sink (S),
Since no force acts on the cam body (4) in the direction of its rotation,
Maintain the locked state.

[0014]

[Effect] The present invention has the following specific effects because of the above configuration. In this case, in the locked state, the flange
(2) Even if external force acts in the direction away from the sink (S),
Since no force acts on the cam body (4) in the direction of its rotation, the locked state is not released.

Further, in this case, the main body (1) is mounted on the sink (S) simply by rotating each cam body (4) in the locking direction, so that the workability at the time of this mounting is good. Further, in this device, since each cam body (4) is rotated in the tangential direction of the circumference of the main body (1), the lever portion swings in the radial direction of the main body (1) as described above. This swing space is smaller than that of the conventional example, and mounting in a narrower place is possible.

In a state in which the cam body (4) is further slightly rotated from the state where the maximum diameter part (43) is located at the dead center, the contacted part (46) provided on the cam body (4). ) Is the body (1) or tightening ring
When the lock is maintained by contacting the stopper (5) provided on the fixed part of (3), an external force acts in the direction in which the tightening ring (3) and the main body (1) rotate relative to each other. However, the lock is not easily released.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, as shown in FIGS. 2 and 3, the above-mentioned cam body (4) is a disc having an eccentric shaft. The main body (1) has a large-diameter step at the upper end of the trunk (13).
(12) and a flange (2) at the upper end of this large-diameter step (12).
A tightening ring (3), which will be described later, is just fitted onto the large-diameter step portion (12), and the trunk portion (13)
A plurality of the cam bodies (4), (4) are arranged at predetermined intervals on the upper outer peripheral surface of the cam.

The tightening ring (3) is an annular body having an upper flange (32) formed on the outer periphery of the upper end and a lower flange (33) formed on the inner periphery of the lower end. Flange (3
The distance from 3) is set to be slightly larger than the distance from the lower end of the large-diameter step portion (12) to the back surface of the drainage attachment hole of the sink (S). Therefore, the upper end surface of this upper flange (32) is
When contacting the periphery of the drainage mounting hole (S), the lower flange (3
3) and the lower end surface of the large-diameter step portion (12) face each other with a slight gap.

As shown in FIGS. 3 and 4, the cam body (4) has a disk shape as a whole, and has a lever portion (44) projecting from a part thereof. , The torso (13)
Is supported by a fulcrum shaft (19) protruding from the outer peripheral surface thereof in a retaining state. Further, the fulcrum of the fulcrum shaft (19) is eccentric from the center of the cam body (4) by a fixed amount, and a specific point in the eccentric direction of the fulcrum shaft (19) on the periphery of the cam body (4) is: The cam member (4) has a minimum diameter portion (42), and a point located on the opposite side of the minimum diameter portion (42) is a maximum diameter portion (43). Therefore, the minimum diameter portion (4) opposite to the lever portion (44)
The outer peripheral surface from 2) to the maximum diameter portion (43) becomes the cam portion (4a) of the cam body (4). And from this maximum diameter part (43)
(19) is the distance between the lower surface of the lower flange (33) of the tightening ring (3) and the fulcrum shaft (19) in contact with the lower surface of the mounting hole peripheral portion of the sink (S). It is set slightly larger.

Further, the center line of the lever portion (44) intersects at right angles with the line connecting the maximum diameter portion (43) and the fulcrum shaft (19). When the length is set to a predetermined value and the maximum diameter portion (43) of the cam portion (4a) slightly exceeds the point (dead center) at the uppermost position, the lever portion (4
The tip of 4) is in contact with the lower surface of the lower flange (33).

The lower flange (33) has a rectangular notch (34) which is opened to the inner peripheral side thereof in the circumferential direction so as to correspond to the interval between the cam bodies (4) and (4). ) (34),
In each notch (34), the minimum diameter portion (42) of the cam portion (4a) is a fulcrum shaft.
The cam body (4) is sized so that it can be inserted in the posture positioned above (19). Further, as shown in FIG. 3, the periphery of the discharge hole of the sink (S) is a step hole (S1) one step lower than the outer peripheral side thereof. The flange (2) of (1) is just fitted with the annular packing (P) interposed, and the upper surface of the sink (S) on the outer peripheral side of the step hole (S1) and that of the flange (2). They are on the same plane.

In the following, the actual operation of attaching this device to the sink (S) will be described in detail. In this one, the body
When attaching (1) to the sink (S),
After the packing (P) is placed on (S1), the body (1) is inserted into the mounting hole of the sink (S), and the flange (2) is fitted into the step hole (S1). Then, from below the main body (1), insert the tightening ring (3) so that the cam body (4) is inserted into each notch (34) of the tightening ring (3). The ring (3) is brought into contact with the lower surface of the step hole (S1), and is rotated by a predetermined angle so that the cam body (4) is positioned outside the notch (34). At this time, the minimum diameter portion (42) of the cam portion (4a) is located below the lower flange (33).

Thereafter, when the lever portion (44) is rotated so that the maximum diameter portion (43) of each cam body (4) moves upward, the distance between the cam portion (4a) and the fulcrum shaft (19) is increased. Since the predetermined dimensional relationship is set by the relationship between the tightening ring (3) and the fulcrum shaft (19),
The cam portion (4a) is in contact with the lower surface of the lower flange (33) of the tightening ring (3), and the tightening ring (3) and the flange (2) are in contact with the bottom plate of the sink (S) and the packing (P). ). afterwards,
Further, when the cam body (4) is rotated, the tip portion of the lever portion (44) comes into contact with the lower flange (33) while the maximum diameter portion (43) slightly exceeds the dead center. The further rotation of the cam body (4) is stopped, and the cam body (4) is maintained in the locked state.

The contact portion between the main body (1) and the sink (S) is sealed by a packing (P). In the locked state, when an external force acts in a direction in which the flange (2) moves away from the sink (S) or in a direction in which the main body (1) and the locking ring (3) rotate relative to each other, the cam body (4) Rotational force in the direction in which the largest diameter portion (43) of the cam portion (4a) moves away from the dead center acts, but rotation in this direction is caused by the lever portion (44) and the tightening ring (3). Since the lock state is prevented by contact, the locked state does not come off or loosen.

In this embodiment, the lower surface of the lower flange (33) serves as the aforementioned stopper (5), and the tip of the lever (44) serves as the aforementioned abutted portion (46). . In addition, as shown in FIG. 4, the lower flange (33) has, on the lower surface on both sides of each notch (34), a concave portion having an arcuate cross section and a contact portion with each of the cam bodies (4). A first receiving portion (35) and a second receiving portion (36) are provided, and each distance from the upper flange (32) of the first and second receiving portions (35) and (36) is provided. Is different. Therefore, the cam body (4) is connected to these first and second receiving portions (3).
5) The packing (P) and the sink (S) having different thicknesses can be handled depending on which of (36) is in contact with.

To achieve the same object, a plurality of fulcrum shafts (19) corresponding to each cam body (4) and having different distances from the upper end of (1) are provided. The system can be adopted.
The cam portion (4a) of the cam body (4) is a semicircular portion of a disk, which is shown in FIG.
It may be set to a range smaller than a semicircle. Further, the initial position of the cam body (4) may be such that the lever portion (44) is located below the cam body (4) as shown by the dotted line in FIG. In this case, the size of the notch (34) is
The notch (34) can be made smaller than that described above, since it is sufficient to set it slightly larger than the diameter of (4).

Further, as shown in FIG. 5 (b), the cam body (4) is provided with a cam body (4) having a cam part (4a) at the tip and a lever part (44) connected to the cam body (4). May have an L-shape as a whole. Note that the stopper (5) is
As a protruding piece provided on the body part (13) of (1), the lever part (44) may be in contact with this protruding piece. In this case, in some cases, the notch (34) is formed in the tightening ring (3).
It is necessary to provide a notch similar to that described above, and insert the protruding piece through the notch.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a partially cutout of a conventional drainage device.

FIG. 2 is a perspective view for explaining the assembly of the drainage mounting structure of the embodiment.

FIG. 3 is a sectional view of a main part of a mounting structure for a drainage device according to an embodiment.

FIG. 4 is a plan view of a cam body (4) of the drainer according to the embodiment.

FIG. 5 is a plan view of a cam body (4) having another shape according to the embodiment.

[Explanation of symbols]

 (S) ・ ・ ・ Sink (1) ・ ・ ・ Main body (2) ・ ・ ・ Flange (3) ・ ・ ・ Tightening ring (P) ・ ・ ・ Packing (4) ・ ・ ・ Cam body (43) ・ ・・ Maximum diameter part (45) ・ ・ ・ First pair diameter part

Claims (2)

(57) [Scope of request for utility model registration] 1. A flange (2) projecting from an upper end of a main body (1) inserted through a mounting hole at a bottom of a sink (S);
(1) is pressurized in the opposing approach direction by a plurality of engaging bodies interposed between the main body (1) and the tightening ring (3). In a drainage mounting structure of a type that ensures airtightness between the peripheral edge of the mounting hole of the sink (S) and the flange (2), each of the engaging bodies is rotatably supported by the outer periphery of the body of the main body (1). A cam body having a cam portion (4a) which is formed and a part of the outer periphery of which is in contact with the lower surface of the tightening ring (3)
(4), the outer peripheral shape of the cam portion (4a) is a shape that smoothly changes from the smallest diameter portion (42) having the smallest distance from the shaft support portion to the largest diameter portion (43) having the largest distance. The distance from the minimum diameter portion (42) to the shaft support is set smaller than the distance from the lower surface of the fastening ring (3) in contact with the mounting hole peripheral edge to the shaft support. And a distance from the maximum diameter portion (43) to the shaft support portion is set slightly larger than a distance from the lower surface of the tightening ring (3) in the above state to the shaft support portion. 2. A stopper (5) for preventing rotation of the cam body (4) beyond a certain angle is provided on the main body (1) or the tightening ring (3), and is provided on an outer peripheral portion of the cam body (4). This stopper
Provide a contacted part (46) that contacts with (5), and
2. A drainage mounting structure according to claim 1, wherein said (5) and said contacted portion (46) are brought into contact with each other with said maximum diameter portion (43) slightly exceeding its dead center.