Apron for bathtub
The bathtub apron with protruding ribs and a wider water-stopping member addresses the need for effective waterproofing by sealing at multiple points, preventing water seepage between the apron and bathtub.
Patent Information
- Application Number
- JP2024139916
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2026-03-06
AI Technical Summary
Existing bathtub aprons require different molds for different shaped bathtubs and lack effective waterproofing at the joint between the bathtub and the apron.
A bathtub apron with protruding ribs on its inner surface, featuring a water-stopping member attached to the ribs at the cut ends, which is wider than the rib tip and positioned by upper and lower protrusions, providing multiple points of contact for effective sealing.
The design effectively prevents water seepage by sealing at multiple points, ensuring robust and efficient waterproofing between the bathtub apron and the bathtub.
Smart Images

Figure 2026036993000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a bathtub apron that is attached to the outside of a bathtub. [Background technology]
[0002] Traditionally, bathtub aprons have been made for different shaped bathtubs, requiring different molds for each. Therefore, Patent Document 1 below describes a method in which a pre-formed long bathtub apron is cut to fit the shape of the bathtub and used (hereinafter, the technology described in Patent Document 1 will be referred to as the "Publication 1 Invention"). According to the Publicly Known Document 1 Invention, multiple ribs are formed on the back of the bathtub apron, and by cutting the apron along the ribs to fit the shape of the bathtub, the cut ends are reinforced by the ribs. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 4-22889 Summary of the Invention [Problem to be solved by the invention]
[0004] However, since the bathtub apron is attached to the outside of the bathtub later, the joint between the bathtub and the bathtub apron requires waterproofing.
[0005] The present invention has been proposed in view of the above circumstances, and aims to provide a bathtub apron that enables effective waterproofing. [Means for solving the problem]
[0006] In order to achieve the above-mentioned object, the bathtub apron of the present invention is a bathtub apron that is attached and detached to the outside of the bathtub, and is characterized in that a plurality of ribs that protrude toward the bathtub are formed on the inner surface facing the bathtub, and a water-stopping member is attached to the ribs at the ends cut according to the shape of the bathtub, and the water-stopping member is attached between the tip of the rib and an attachment member located outside the bathtub.
[0007] The bathtub apron of the present invention is characterized in that the width of the mounting surface portion of the water-stopping member, which is the side that is pressed against the mounting member, is wider than the width of the tip of the rib.
[0008] The bathtub apron of the present invention is a bathtub apron that is attached and detached to the outside of a bathtub, A plurality of ribs protruding toward the bathtub are formed on the inner surface facing the bathtub, and a water-stopping member is attached to the ribs at the end cut according to the shape of the bathtub. The water-stopping member is attached between the tip of the rib and the bathtub.
[0009] The bathtub apron according to the present invention is characterized in that the water-stopping member has an inner surface pressing surface portion that is pressed against the inner surface portion.
[0010] The bathtub apron according to the present invention is characterized in that the water-stopping member is positioned by contacting the side surface of the rib.
[0011] The bathtub apron of the present invention is characterized in that the water-stopping member is engaged with an upper water-stopping protrusion protruding from the upper end of the rib toward the bathtub and a lower water-stopping protrusion protruding from the lower end of the rib toward the bathtub.
[0012] The bathtub apron according to the present invention is characterized in that the pressing surface portion on the attachment member side has a plurality of gaskets adjacent to each other in the width direction. [Effects of the Invention]
[0013] The bathtub apron of the present invention is designed to be attached to the outside of a bathtub. Its inner surface, the side facing the bathtub, has multiple ribs that protrude toward the bathtub. The ribs are cut to fit the shape of the bathtub, and a water-stopping member is attached to the end of the ribs. The water-stopping member is attached between the tip of the rib and the attachment member located on the outside of the bathtub. If the water-stopping member can seal water from the tip of the rib at the end of the cut bathtub apron to the attachment member, water can be prevented from seeping inside the bathtub apron. This allows for effective water-stopping.
[0014] In the bathtub apron of the present invention, the width of the surface of the water-stopping member that is pressed against the workpiece is wider than the width of the tip of the rib. Generally, to prevent sink marks during molding, the width of the rib is not wide, and the tip is even narrower. The water-stopping member has a wide surface that is pressed against the workpiece at the tip, allowing for a wide surface area to come into contact with the workpiece. This allows for effective water-stopping.
[0015] The bathtub apron of the present invention is designed to be attached and detached to the outside of the bathtub. Its inner surface, the side facing the bathtub, has multiple ribs that protrude toward the bathtub. The ribs at the ends are cut to fit the shape of the bathtub, and water-stopping members are attached to the ends of the ribs, which are then attached between the bathtub and the bathtub. If the water-stopping members can seal water from the ends of the ribs at the cut ends of the bathtub apron to the outer surface of the bathtub, water can be prevented from seeping inside the bathtub apron. This allows for effective water-stopping.
[0016] In the bathtub apron of the present invention, the water-stopping member has an inner surface pressing surface that presses against the inner surface. In addition to sealing off water between the tip of the rib and the attachment or the bathtub, it also seals off water between the inner surface and the attachment, making for an effective water-stopping treatment.
[0017] In the bathtub apron according to the present invention, the water-stopping member is positioned by contacting the side surface of the rib, which makes it easy to attach the water-stopping member.
[0018] In the bathtub apron of the present invention, the water-stopping member is fitted to an upper water-stopping protrusion that protrudes from the upper end of the rib toward the bathtub and a lower water-stopping protrusion that protrudes from the lower end of the rib toward the bathtub. By fitting the water-stopping member to the upper and lower water-stopping protrusions, the positioning of the water-stopping member is ensured and the structure is robust.
[0019] The bathtub apron of the present invention has a surface portion on the mounting member side that has multiple gaskets adjacent to each other in the width direction, which creates a multiple water-stopping structure in the width direction, enabling effective water-stopping treatment. [Brief explanation of the drawings]
[0020] [Figure 1] FIG. 1 is a perspective view of a bathtub apron and a bathtub according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of the bathtub apron according to the embodiment of the present invention, seen from the inner surface side. [Figure 3] FIG. 3 is a first perspective view of a water-stopping member for a bathtub apron according to an embodiment of the present invention. [Figure 4] FIG. 4 is a second perspective view of the water-stopping member of the bathtub apron according to the embodiment of the present invention. [Figure 5] FIG. 5 is a front view of a water-stopping member for a bathtub apron according to an embodiment of the present invention. [Figure 6] FIG. 6 is a top view of a water-stopping member of a bathtub apron according to an embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 3, showing the water-stopping member of the bathtub apron according to the embodiment of the present invention. [Figure 8] FIG. 8 is an enlarged cross-sectional view of the main part of the bathtub apron according to the embodiment of the present invention, taken along the line VIII-VIII in FIG. 2 and below. [Figure 9]FIG. 9 is an enlarged cross-sectional view of a main part of the bathtub apron according to the embodiment of the present invention with a water-stopping member attached, in the same configuration as FIG. [Figure 10] FIG. 10 is a side view of a bathtub apron according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0021] The bathtub apron according to the present invention will be described below with reference to the drawings. Figure 1 shows a bathtub apron 8 according to this embodiment removed from a bathtub 2. In the following, the direction in which the bathtub apron 8 is attached to the bathtub 2 will be referred to as the back, the opposite direction will be referred to as the front, the width direction of the bathtub apron 8 will be referred to as the right side or left side, and the height direction of the bathtub apron 8 will be referred to as the up or down.
[0022] As shown in Figure 1, in bathroom 1, bathtub 2 and washing area 5 are adjacent to each other, and bathtub 2 and washing area 5 are connected via a mounting member 7. Specifically, a flange portion 4 is formed on the upper edge of bathtub main body 3, and a raised portion 6 is formed at the boundary between bathtub 2 and washing area 5, and mounting members 7 are attached to the corners of flange portion 4 and raised portion 6 on the outside of bathtub main body 3. Mounting member 7 is a roughly rectangular plate.
[0023] Bathtub apron 8, which is formed to fit the entire length of bathtub 2, is roughly rectangular and elongated from side to side, and is attached and detached to the outside of bathtub 2. Specifically, the upper end of bathtub apron 8 is attached to the lower part of flange portion 4, and the lower end of bathtub apron 8 is attached to rising portion 6 via hook 10 (see Figure 2). Both left and right ends of bathtub apron 8 are pressed against attachment member 7 via water-stopping member 17 (see Figure 2).
[0024] Here, the bathtub apron 8 will be described in detail with reference to the drawings. Figure 2 shows the inner surface 11, which is the back side of the bathtub apron 8 and faces the bathtub 2, and Figures 3 to 7 show the water-stopping member 17.
[0025] As shown in Figure 2, the bathtub apron 8 has an apron body 9 and a water-stopping member 17 that can be attached to and detached from the apron body 9. A plurality of ribs 12 are formed on the inner surface 11 of the apron body 9. The ribs 12 are formed on the left and right ends of the apron body 9, and protrude rearward from the inner surface 11 toward the bathtub 2. The ribs 12 are thin plate-shaped and extend in the height direction of the apron body 9. The ribs 12 are aligned in the left-right direction of the apron body 9.
[0026] The upper end of the rib 12 is formed with an upper water-stopping protrusion 15 that protrudes rearward from the inner surface 11 toward the bathtub 2, and the lower end of the rib 12 is formed with a lower water-stopping protrusion 16 that protrudes rearward from the inner surface 11 toward the bathtub 2. The upper water-stopping protrusion 15 and the lower water-stopping protrusion 16 protrude further than the tip 13 (see Figures 8 and 9) that is the protruding end of the rib 12. Therefore, grooves 14 (see Figures 8 and 9) are formed between the ribs 12 and between the upper water-stopping protrusion 15 and the lower water-stopping protrusion 16.
[0027] The apron body 9 is cut to fit the shape of the bathtub 2, and the left and right lengths are adjusted. Specifically, the apron body 9 is cut in the height direction along any of the ribs 12. For example, when cutting a portion of the left side of the apron body 9 in FIG. 2, the apron body 9 is cut along the right face of one of the ribs 12 (hereinafter referred to as the "cutting reference rib"), and the groove 14 and the rib 12 adjacent to the cutting reference rib are exposed at the cut edge of the end of the apron body 9. A water-stopping member 17 is attached to the exposed rib 12. The water-stopping member 17 fits into the upper water-stopping protrusion 15 and the lower water-stopping protrusion 16 at the groove 14, and is sandwiched between the upper water-stopping protrusion 15 and the lower water-stopping protrusion 16.
[0028] Here, the waterproof member 17 will be described with reference to the drawings.
[0029] 3 to 6, the water-stopping member 17 is a member that is elongated in the height direction. The water-stopping member 17 has a receiving member-side pressing surface portion 18, a first protruding portion 21 extending forward from the receiving member-side pressing surface portion 18, a tip-side pressing surface portion 19 extending leftward from the tip of the first protruding portion 21, a second protruding portion 22 extending forward from the tip of the tip-side pressing surface portion 19, and an inner surface-side pressing surface portion 20 extending leftward from the tip of the second protruding portion 22. A tip-side upper end surface 23 extending rearward is connected to the upper end of the tip-side pressing surface portion 19, and a tip-side lower end surface portion 24 extending rearward is connected to the lower end of the tip-side pressing surface portion 19. An inner surface upper end surface 25 extending rearward is connected to the upper end of the inner surface pressing surface 20, and an inner surface lower end surface 26 extending rearward is connected to the lower end of the inner surface pressing surface 20. The tip end upper end surface 23 and the inner surface upper end surface 25 are flush with each other and are connected to the upper end of the workpiece pressing surface 18. The tip end lower end surface 24 and the inner surface lower end surface 26 are flush with each other and are connected to the lower end of the workpiece pressing surface 18. The widths of the workpiece pressing surface 18, the tip end pressing surface 19, and the inner surface pressing surface 20 are wider in this order: workpiece pressing surface 18, inner surface pressing surface 20, and tip end pressing surface 19.
[0030] The mounting member side pressing surface portion 18 is a flat, thin plate. The tip side pressing surface portion 19 is a flat, thin plate, and a tip side packing 28 is attached from the front surface to the tip side upper end surface portion 23 and the tip side lower end surface portion 24. The inner surface side pressing surface portion 20 is a flat, thin plate, and an inner surface side packing 29 is attached from the front surface to the inner surface side upper end surface portion 25 and the inner surface side lower end surface portion 26.
[0031] Bathtub apron 8 is constructed as described above. Next, the procedure for attaching water-stopping member 17 to apron body 9 will be explained with reference to the drawings, along with the effects of bathtub apron 8. Figures 8 and 9 show partial cross sections of bathtub apron 8, and Figure 10 shows the left side of bathtub apron 8.
[0032] 8 and 9, the water-stopping member 17 is attached to the rib 12 at the end of the cut apron body 9. Specifically, the side of the second protruding portion 22 of the water-stopping member 17 is abutted against the side of the rib 12, thereby positioning the water-stopping member 17, and the tip-side pressing surface 19 of the water-stopping member 17 is abutted against the tip 13 of the rib 12 via the tip-side gasket 28. This makes it easy to attach the water-stopping member 17. The inner surface-side pressing surface 20 of the water-stopping member 17 is inserted into the groove 14 of the rib 12 and abuts against the inner surface 11 of the apron body 9 via the inner surface-side gasket 29. 10, in the groove 14, the tip-side upper end surface 23 and the inner surface-side upper end surface 25 of the water-stopping member 17 abut against the upper water-stopping protrusion 15 via the tip-side packing 28 and the inner surface-side packing 29, and the tip-side lower end surface 24 and the inner surface-side lower end surface 26 abut against the lower water-stopping protrusion 16 via the tip-side packing 28 and the inner surface-side packing 29. In this way, the water-stopping member 17 is fitted to the upper water-stopping protrusion 15 and the lower water-stopping protrusion 16, thereby not only positioning the water-stopping member 17 but also making the structure more robust.
[0033] After the water-stopping member 17 is attached to the apron body 9 (or before the water-stopping member 17 is attached to the apron body 9), the first and second gaskets 27a and 27b are attached to the support surface 18, and the lower water-stopping protrusion gasket 30 is attached to the rear surface of the lower water-stopping protrusion 16. The first and second gaskets 27a and 27b are adjacent in the width direction and are attached to the entire support surface 18 from the top to the bottom. In this state, the bathtub apron 8 is attached to the outside of the bathtub 2 via the support 7 (see Figure 1). Specifically, the upper water-stopping protrusion 15 of the bathtub apron 8 is fitted to the inside of the flange 4 from below, the hook 10 of the bathtub apron 8 is hooked onto the rising portion 6, and the lower water-stopping protrusion 16 is placed against the rising portion 6. The water-stopping member 17 is attached to the workpiece 7 via the workpiece-side pressing surface 18 via the workpiece-side gasket 27. Therefore, the water-stopping member 17 is attached by being sandwiched between the tip 13 of the rib 12 and the workpiece 7.
[0034] If the water-stopping member 17 can seal water from the tip 13 of the rib 12 to the workpiece 7, it is possible to prevent water from seeping inside the bathtub apron 8. This allows for effective water-stopping. Furthermore, because the width of the workpiece-side pressing surface 18 of the water-stopping member 17 is wider than the width of the tip 13 of the rib 12, the water-stopping member 17 comes into contact with the workpiece 7 over a wider surface. This allows for even more effective water-stopping. The workpiece-side pressing surface 18 has the workpiece-side first gasket 27a and the workpiece-side first gasket 27b adjacent in the width direction, which provides a multiple water-stopping structure in the width direction, allowing for even more effective water-stopping.
[0035] In addition to sealing off water between the tip 13 of the rib 12 and the workpiece 7, the watertight member 17 can also seal off water between the inner surface 11 of the apron body 9 and the workpiece 7. That is, the watertight member 17 can seal off water at three points: between the tip 13 and the tip-side pressing surface 19, between the inner surface 11 and the inner surface-side pressing surface 20, and between the workpiece 7 and the workpiece-side pressing surface 18, thereby enabling effective watertight treatment.
[0036] In another embodiment of the present invention, the width of the mounting surface on the workpiece side is the same as or narrower than the width of the tip of the rib. In another embodiment, the inner surface side pressing surface portion is not provided. In another embodiment, the waterstop member is positioned so that it does not come into contact with the side surfaces of the rib. Another embodiment does not have the upper water blocking protrusion and the lower water blocking protrusion. In another embodiment, the attachment member is attached to the flange portion outside the flange portion of the bathtub. In another embodiment, the attachment member is attached to the outer surface of the bathtub body. In another embodiment, the first gasket on the attachment member side and the second gasket on the attachment member side are integral with each other. In another embodiment, the first gasket on the attachment member side, the second gasket on the attachment member side, and the gasket on the lower water-stop protrusion side are integral with each other. In another embodiment, the second gasket on the attachment member side and the gasket on the lower water-stopping protrusion side are integral with each other. In another embodiment, the number of packings on the mounting member side is arbitrary. Another embodiment does not have a mounting member, so in this embodiment, the bathtub apron is attached directly to the outer surface of the bathtub, and the water-stopping member is attached between the tip of the rib and the bathtub.
[0037] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design modifications can be made to the present invention without departing from the scope of the claims. [Explanation of symbols]
[0038] 1 bathroom 2 bathtubs 3 Bathtub body 4 Flange 5 Washing area 6. Rising section 7 Mounting material 8 Bathtub Aprons 9 Apron body 10 Hooks 11 Inner surface 12 Ribs 13 Tip 14 Groove 15 Upper water stop projection 16 Lower water stop projection 17 Water-stopping material 18 Pressing surface on the mounted workpiece side 19 Tip side pressing surface 20 Inner surface pressing surface 21 First protrusion 22 Second protrusion 23 Upper end surface of tip side 24 Lower end surface on tip side 25 Upper end surface of inner surface 26 Inner side lower end surface 27a First packing on the mounting member side 27b Second packing on the mounting member side 28 Tip side packing 29 Inner surface packing 30 Lower water stop protrusion side packing
Claims
1. A bathtub apron that is attached and detached to the outside of a bathtub, A plurality of ribs protruding toward the bathtub are formed on the inner surface facing the bathtub, and a water-stopping member is attached to the ribs at the end cut according to the shape of the bathtub. The water-stopping member is attached between the tip of the rib and a support member located outside the bathtub. A bathtub apron characterized by:
2. The width of the mounting-receiving-member-side pressing surface portion of the waterproofing member, which is the side pressed against the mounting-receiving member, is wider than the width of the tip of the rib.
2. The bathtub apron according to claim 1.
3. A bathtub apron that is attached and detached to the outside of a bathtub, A plurality of ribs protruding toward the bathtub are formed on the inner surface facing the bathtub, and a water-stopping member is attached to the ribs at the end cut according to the shape of the bathtub. The water-stopping member is attached between the tip of the rib and the bathtub. A bathtub apron characterized by:
4. The water-stopping member is An inner surface side pressing surface portion that is pressed against the inner surface portion, 4. The bathtub apron according to claim 1, wherein the bathtub apron is made of a material that is not resistant to water.
5. The water-stopping member is positioned by contacting a side surface of the rib. A bathtub apron according to any one of claims 1 to 3.
6. The water-stopping member is The rib is fitted with an upper water-stopping protrusion protruding from the upper end thereof toward the bathtub, and a lower water-stopping protrusion protruding from the lower end thereof toward the bathtub.
6. The bathtub apron according to claim 5.
7. The mounting surface portion of the mounting member has a plurality of packings adjacent to each other in the width direction.
3. The bathtub apron according to claim 1 or 2.
Citation Information
Patent Citations
JP1992022889U