JPH09140607A - Drain stopper for bath tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unnecessitate the use of a ring-shaped fitting, to reduce the cost and to facilitate the change of a ball chain or a drain stopper. SOLUTION: A fitting for attaching a drain stopper is formed with a recessed groove la that is U-shaped in plane view, with a flanged U-shaped handle 2 installed for hooking a ball chain inside the U-shaped recessed groove. In addition, the fitting for attaching a drain stopper is provided with a vertical hole opened for putting the ball chain through and also horizontally with a groove into which a ball chain engaging plate is insertable, a plate provided with an engaging groove into which the small diameter part of the ball chain can be inserted; then, the ball chain is engaged integrally with the fitting for attaching a drain stopper by means of the ball chain engaging plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain plug for a bathtub, and a structure of a ball chain for suspending the drain chain and a drain plug fitting for suspending and locking the upper end of the ball chain.

[0002]

2. Description of the Related Art Conventionally, many conventional techniques have been known for a structure in which a drain plug for a bathtub is suspended by a ball chain, and the upper end of the ball chain is locked to a drain plug fitting. For example, Japanese Utility Model Publication No. 4-86486, Japanese Utility Model Publication No. 5-8038.
No. 5, gazette No. 7-17870, gazette 7-1
4990, Japanese Utility Model Laid-Open No. 7-1882, and Japanese Unexamined Patent Publication No.
The technology is disclosed in Japanese Patent Laid-Open No. 54767/1994, Japanese Utility Model Publication No. 6-13669, and Japanese Patent Laid-Open No. 6-2350.

[0003]

DISCLOSURE OF THE INVENTION The present invention is to improve the mounting portion of a conventional bathtub drain plug so that the circumferential portions used for a key chain or the like for locking the upper end of the ball chain overlap. This eliminates the need to use a ring-shaped metal fitting, further reduces the number of parts in this portion, reduces the cost, and facilitates replacement of the ball chain and drain plug.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. According to the first aspect of the present invention, a U-shaped concave groove portion in a plan view is formed in the drain plug fitting, and a U-shaped ball chain hooking rod with an ear portion is fitted in the U-shaped concave groove portion. A ball chain is locked on a ball chain hooking rod. In Claim 2, a ball chain passing hole is formed in the drain plug mounting tool in the vertical direction, and a locking groove that can be inserted into the small diameter portion of the ball chain is opened in the horizontal direction of the drain plug mounting tool. A groove into which a stop plate can be inserted is provided, and a ball chain is integrally locked by a drain plug mounting tool and a ball chain locking plate.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. FIG. 1 is a perspective view showing a configuration in which a U-shaped ball chain hooking rod 2 with ears is used to attach a ball chain connecting metal fitting to a drain plug fitting, and FIG. 2 is a drainage of the embodiment of FIG. FIG. 3 is a front perspective view of the decorative cover 8 covering the plug fitting 1, FIG. 3 is a rear perspective view of the decorative cover 8, and FIG. 4 is a side view of the embodiment of FIG. 4, FIG. 6 is a front view of the embodiment of FIG. 4, and FIG. 7 is a perspective view of a portion of the drain plug fitting 11 of the embodiment of FIG. FIG. 8 is a plan view of the ball chain locking plate 3 inserted into the ball chain, FIG. 9 is a view showing the relationship between the ball chain locking plate 3 and the ball chain, and FIG. 10 is another drain plug. 1 is a perspective view showing an embodiment constituted by a fitting 21 and a ball chain locking plate 23, FIG. 11 is a perspective view showing an embodiment constituted by another drain plug fitting 24 and a ball chain locking plate 23, FIG. Is a drawing showing a relation of ball chain retaining plate 23 and the ball chain.

A first embodiment will be described with reference to FIGS. 1, 2 and 3. The drain plug fixture 1 is formed by machining a round bar. That is, the drain plug fitting 1 is configured such that the fixing male screw portion 1b is inserted into the hole formed in the side wall of the bathtub of the unit bath, and the nut is screwed and fixed from the back surface of the bathtub.
A recessed groove portion 1a for fitting the U-shaped ball chain hooking rod 2 with an ear portion is opened from the upper side on the front side of the drain plug attachment 1. A U-shape with an ear portion formed by a spring rod is formed in the inner surface of the groove 1a by inserting a fitting hole into which the ear portion of the U-shaped ball chain hooking rod 2 with an ear portion can be fitted in the horizontal direction. The ball chain hooking rod 2 is once narrowed and is inserted between the concave groove portions 1a, and the ear portion is inserted and engaged with the fitting hole.

The U-shaped ball chain hooking rod 2 with the ears,
The locking metal fitting on the upper end of the ball chain is engaged. U with the ears
The stopper projection 9 is inserted into the concave groove portion 1a from above so that the V-shaped ball chain hooking rod 2 does not come off from the concave groove portion 1a. The stopper projections 9 are disposed inside the back surface of the decorative cover 8 shown in FIGS. 2 and 3, and the locking pieces 7 for stopping the decorative cover 8 are provided on the left and right sides of the stopper projections 9 of the decorative cover 8. 7 is projected. The locking piece 7
7 has a locking hook 7a at the lower end, and the locking piece 7 is inserted into the groove 1a shown in FIG. 1 so that the lower end of the locking hook 7a is recessed. The lower end of the groove portion 1a is engaged with the groove portion 1a so that it can be prevented from coming off.

As described above, since the locking pieces 7, 7 and the stopper projection 9 are arranged on the back side of the decorative cover 8, the decorative cover 8 is fitted into the recessed groove portion 1a of the drain plug fitting 1 from above. By mounting, the stopper protrusion 9 has U
By pressing the upper portion of the character-shaped ball chain hooking rod 2, the movement of the U-shaped ball chain hooking rod 2 with ears is restricted, and the ball chain hooking rod 2 does not come off. Of.

Next, the second device for fixing the ball chain of the drain plug for the bathtub
An example of the above will be described with reference to FIGS. In this embodiment, the drain plug fitting 11 is provided with a fixed male screw portion 11b, the fixed male screw portion 11b is projected to the back side of a bathtub such as a unit bath, and the drain plug fitting 11 is fixed with a nut. Up to this point, it is the same as in the first embodiment.
However, on the front side of the drain plug fitting 11, the locking groove 11a of the ball chain locking plate 3 and the locking plate mounting surface 1 on which the ball chain locking plate 3 is mounted.
1c is configured.

A ball chain insertion hole 1 is formed in the locking plate mounting surface 11c.
1d is provided in the vertical direction. The ball chain insertion hole 11d
Has a hole diameter through which both the ball portion 12 and the connecting rod portion 13 of the ball chain can pass. Therefore, the ball chain cannot be locked to the drain plug mounting tool 11 only by fitting the ball chain into the ball chain insertion hole 11d, so the ball chain locking plate 3 is inserted in the horizontal direction. Thus, the ball chain is prevented from falling out of the ball chain insertion hole 11d.

That is, as shown in FIG. 9, a ball chain locking groove 3a is opened in the ball chain locking plate 3, and the ball chain locking groove 3 is formed.
The width a of a is larger than the diameter b of the connecting rod portion 13 of the ball chain and smaller than the diameter A of the ball portion 12 of the ball chain. With this configuration, by inserting the ball chain locking plate 3 into the connecting rod portion 13 from the side surface of the ball chain,
Since the ball portion 12 cannot pass through the ball chain locking groove 3a,
It prevents the ball chain from falling out.

Further, the ball chain locking plate 3 has an engaging projection 3c at the tip thereof for engaging with the locking groove 11a, and the locking groove 11a.
A flange fitting hole 3b that can be fitted into the flange on the front side of the portion is opened. The engaging projection 3c and the flange fitting hole 3b can engage the ball chain locking plate 3 with the locking groove 11a, so that the ball chain locking plate 3 is held on the locking plate mounting surface 11c. Is held on the upper surface of the drain plug mounting tool 11 with the ball chain locked. Then, with the ball chain locked to the drain plug fitting 11 by the ball chain locking plate 3, the decorative cover is covered,
Of course, the design performance is improved.

Next, a third embodiment will be described with reference to FIGS. In this embodiment, the drain plug fitting 21
Further, a horizontal insertion groove 21a into which the ball chain locking plate 23 can be inserted in the horizontal direction is opened. Further, a fixed male screw portion 21b for inserting a nut into the back side of the bathtub is provided, which is the same as the first and second embodiments. On the front side, the horizontal insertion groove 2a is formed at the open portion of the horizontal insertion groove 21a.
A ball chain insertion hole 21d is formed in a direction orthogonal to 1a. The diameter of the ball chain insertion hole 21d is configured to be larger than the diameter A of the ball portion 12 as in the second embodiment.

A ball chain is inserted into the ball chain insertion hole 21d, and a ball chain locking plate 23 is inserted and locked from the side surface of the horizontal insertion groove 21a. The shape of the ball chain locking plate 23 is shown in FIG.
2, a ball chain locking groove 23a is also opened in the ball chain locking plate 23, and the ball chain locking groove 23a is opened.
The width a of a is smaller than the diameter A of the ball portion 12 of the bead chain and larger than the diameter b of the connecting rod portion 13 of the bead chain. With this structure, the ball chain locking plate 23 is inserted into the ball chain locking groove 23a from the side surface to lock the ball chain connecting rod portion 13 to prevent the ball chain from falling.

Next, referring to FIG. 11, a fourth embodiment will be described. In this embodiment, the drain plug attachment 24 has an upper surface serving as a mounting surface 24a for the rectangular parallelepiped ball chain locking plate 23. A ball chain insertion hole 24d into which a ball chain is fitted is vertically opened in the drain plug attachment 24, and a fixed male screw portion 24b for fixing to the bathtub is provided in the drain plug attachment 24. ing. The ball chain locking plate 23 in this embodiment has the same structure as that shown in FIG. 12 of the third embodiment.

[0016]

As described above, the present invention has the following advantages. According to the structure of claim 1, for locking the upper end of the ball chain as in the conventional case,
It is no longer necessary to use a ring-shaped metal fitting having overlapping circumferential portions used for a key holder or the like, and it is not necessary to open the circumferential overlapping portion of the ring-shaped metallic fitting. In addition, the conventional attachment part of the bathtub drain plug can be improved, the number of parts in the portion can be reduced, the cost can be reduced, and the ball chain and the drain plug can be easily replaced.

According to the present invention, the ball chain is inserted into the ball chain insertion hole vertically formed in the drain plug fitting,
By inserting the ball chain locking plate horizontally, the ball chain can be locked, so it is possible to easily replace or install the ball chain by simply inserting and removing the ball chain locking plate. It was.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration in which a U-shaped ball chain hooking rod 2 with ears is used to attach a ball chain connecting metal fitting to a drain plug fitting.

FIG. 2 is a front perspective view of a decorative cover 8 covering the drain plug attachment 1 of the embodiment of FIG.

FIG. 3 is a rear perspective view of the decorative cover 8 of the same manner.

FIG. 4 is a perspective view of an embodiment in which a ball chain is locked to a drain plug fitting 11 by a ball chain locking plate 3.

5 is a side view of the embodiment of FIG.

FIG. 6 is a front view of the embodiment of FIG.

7 is a perspective view of a portion of the drain plug attachment 11 of the embodiment of FIG.

FIG. 8 is a plan view showing a state where the ball chain locking plate 3 is inserted into the ball chain.

FIG. 9 is a drawing showing the relationship between the ball chain locking plate 3 and the ball chain.

FIG. 10 is a perspective view showing an embodiment constituted by another drain plug attachment 21 and a ball chain locking plate 23.

FIG. 11 is a perspective view showing an embodiment constituted by another drain plug attachment 24 and a ball chain locking plate 23.

FIG. 12 is a view showing a relationship between a ball chain locking plate 23 and a ball chain.

[Explanation of symbols]

 1.11.21.224 Drain plug attachment 2 Ball chain hooking rod 3.23 Ball chain locking plate 9 Stopper protrusion 12 Ball 13 Connection rod

Claims (2)

[Claims] 1. A U-shaped concave groove portion in a plan view is formed in a drain plug fitting, and a U-shaped ball chain hooking rod with an ear portion is fitted in the U-shaped concave groove portion, and the ball is attached. A drain plug for a bathtub, characterized in that a chain chain is locked on a chain hook. 2. A ball chain lock in which a vertical ball chain passage hole is opened in the drain plug fitting, and a locking groove which can be inserted into a small diameter portion of the ball chain is opened in the horizontal direction of the drain plug fitting. A bath drain plug, wherein a groove into which a plate can be inserted is provided, and the ball chain is integrally locked with a drain plug mounting tool and a ball chain locking plate.