Backrest for bathroom
The ergonomic design of the bathroom backrest with an inclined and curved support surface addresses discomfort issues, enabling relaxed bathing positions and improved comfort.
Patent Information
- Application Number
- JP2024030195
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-09-10
AI Technical Summary
Existing bathroom backrests may cause discomfort and strain when used for extended periods, making it difficult for bathers to relax.
A bathroom backrest with a support surface that is inclined obliquely rearward from the waist toward the shoulder, featuring a curved surface recessed toward the wall and a second surface protruding away from the wall, providing a larger contact area and ergonomic support.
The design allows bathers to maintain a relaxed posture with reduced abdominal pressure, enhancing comfort and ease of use during bathing.
Smart Images

Figure 2025132549000001_ABST
Abstract
Description
[Technical Field]
[0001] FIELD OF THE INVENTION Aspects of the present invention generally relate to a bathroom backrest. [Background technology]
[0002] BACKGROUND ART A bathroom backrest provided on a wall surface of a bathroom is known (Patent Document 1). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-063170 Summary of the Invention [Problem to be solved by the invention]
[0004] The bathroom backrest described in Patent Document 1 may make it difficult for a bather to relax if he or she leans on it for a long period of time, for example.
[0005] The present invention has been made based on the recognition of such problems, and aims to provide a bathroom backrest that improves the comfort of the bather. [Means for solving the problem]
[0006] The first invention is a bathroom backrest that is located above a horizontal seat member that is installed along the wall of a bathroom, and has a support surface that supports the back of a bather seated on the seat member, and the dimension of the support surface from its upper end to the wall member is smaller than the dimension from its lower end to the wall member.
[0007] This bathroom backrest has a back surface that allows the bather to take a relaxed posture when seated on the seating member. The bathroom backrest's support surface can support the bather's back, reducing strain on the joints.
[0008] The second invention is a bathroom backrest in accordance with the first invention, characterized in that the support surface has a first surface that is a curved surface that is recessed in the vertical direction toward the wall portion, and the center of the radius of curvature of the first surface is located above the upper end of the support surface.
[0009] This bathroom backrest has a support surface that traces the shape of the bather's back, which increases the contact area between the bather's back and the support surface, making it easier to support the back over a wide area.
[0010] A third invention is a backrest for a bathroom according to the second invention, characterized in that the radius of curvature of the first surface is 900 mm or more and 1300 mm or less.
[0011] This bathroom backrest increases the contact area between the bather's back and the support surface, making it easier to support the back widely.
[0012] The fourth invention is a bathroom backrest according to the first invention, characterized in that the support surface has a first surface and a second surface extending downward from the lower end of the first surface, and the angle between the horizontal line and a first line connecting the lower end of the second surface and the lower end of the first surface is larger than the angle between the horizontal line and a second line connecting the upper end of the first surface and the lower end of the first surface.
[0013] This bathroom backrest provides a sufficient area for supporting the back in a relaxed manner on the first surface. The second surface of the bathroom backrest also functions as a backrest, while supporting the lower back when the bather sits deeply on the seating member. This makes it easier to stand up and wash when bathing.
[0014] The fifth invention is a bathroom backrest in accordance with the first invention, characterized in that the support surface has a first surface and a second surface extending downward from the lower end of the first surface, and the second surface is a curved surface that protrudes in the vertical direction opposite the wall portion.
[0015] This bathroom backrest allows the second surface to rest comfortably against the back of the bather. In addition, the rounded shape of the second surface improves the design.
[0016] The sixth invention is a bathroom backrest according to the first invention, characterized in that the support surface has a first surface and a second surface extending downward from the lower end of the first surface, and the lower end of the first surface is located at a position where the length from the lower end of the support surface is between 1 / 40 and 1 / 4 of the height dimension from the lower end to the upper end of the support surface.
[0017] This bathroom backrest allows the bather to lean back in a relaxed position. In addition, the design can be improved by reducing the height of the second surface.
[0018] The seventh invention is a bathroom backrest characterized in that, in the first invention, at least one end portion located above or below the support surface is a curved surface that protrudes in the vertical direction opposite the wall portion.
[0019] This bathroom backrest allows the ends to softly contact the bather's shoulders and lower back, improving the bather's comfort. [Effects of the Invention]
[0020] According to an aspect of the present invention, a bathroom backrest that improves the comfort of the bather can be provided. [Brief explanation of the drawings]
[0021] [Figure 1] FIG. 1 is a perspective view showing a bathroom unit equipped with a bathroom backrest according to a first embodiment. [Figure 2] This is a front view of the seat member and the bathroom backrest. [Figure 3] 3 is a cross-sectional view of the seat member and the bathroom backrest in FIG. 2, seen from the direction of arrow AA. [Figure 4] FIG. 4 is an enlarged cross-sectional view of the bathroom backrest in FIG. 3. [Figure 5] 10 is an explanatory diagram illustrating the inclination angle between the first and second surfaces of a bathroom backrest. FIG. [Figure 6] FIG. 6 is a cross-sectional view similar to FIG. 5 showing a bathroom backrest according to a second embodiment. [Figure 7] FIG. 6 is a cross-sectional view similar to FIG. 5 showing a bathroom backrest according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION
[0022] Hereinafter, embodiments will be described with reference to the drawings. In the drawings, like components are designated by like reference numerals, and detailed descriptions thereof will be omitted where appropriate. FIG. 1 is a perspective view showing a bathroom unit equipped with a bathroom backrest according to the first embodiment. As shown in FIG. 1, bathroom unit 1 includes seating member 10, counter 30, bathtub 90, floor portion 95, and wall portions 96a to 96f.
[0023] A floor section 95 is installed in the space next to the bathtub 90. The surface of the floor section 95 is waterproof to prevent water from leaking outside the bathroom 100. In this specification, the term "water" includes not only cold water but also heated hot water. The bathroom unit 1 may also be a shower room that does not have a bathtub 90.
[0024] As shown by the two-dot chain line in Figure 1, bathroom 100 is surrounded by walls 96a-96f. Walls 96a-96c are installed on the rim of bathtub 90. Walls 96d-96f are installed on the peripheral edge of floor 95. A door is attached to wall 96f via a door frame (not shown).
[0025] FIG. 2 is a front view of the seat member and the bathroom backrest. 3 is a cross-sectional view of the seat member and the bathroom backrest in FIG. 2 as viewed from the direction of arrow AA. FIG. 4 is an enlarged cross-sectional view of the bathroom backrest in FIG. FIG. 5 is an explanatory diagram illustrating the inclination angle between the first surface and the second surface of the backrest for a bathroom.
[0026] As shown in Figures 1 and 2, a seating member 10 and a counter 30 are provided on the wall surface 96d. The seating member 10 is provided along the wall surface 96d of the bathroom 100. The seating member 10 is located to the side of the bathtub 90 and is formed in a horizontally elongated shape with its left-to-right dimension longer than its top-to-bottom dimension. In this specification, the terms "front," "back," "left," "right," "upper," and "lower" are used to describe the seating member 10 from the perspective of a bather sitting on the seating member 10 with their back against a bathroom backrest 40 (described below).
[0027] The seat member 10 is formed in a box shape that protrudes forward from the wall surface portion 96d. The upper surface 11 of the seat member 10 is flat, allowing a bather to sit on it. The upper surface 11 of the seat member 10 is also designed to accommodate a washbasin and detergents such as soap, body wash, and shampoo.
[0028] As shown in Figure 3, faucet main body 20 is housed inside seat member 10. Faucet main body 20 is located between the water supply source and hot water supply source and a shower (not shown) and water outlet 75 provided in bathroom 100. The pipes connecting the water supply source and hot water supply source to faucet main body 20 and the pipes connecting faucet main body 20 to the shower and water outlet 75 are disposed on the back side of wall surface portion 96d.
[0029] Faucet main body 20 has, for example, a solenoid valve, a control unit that controls the operation of the solenoid valve, a temperature adjustment unit, a flow rate adjustment unit, etc. Faucet main body 20 starts and stops the discharge of water from shower or water discharge unit 75, and adjusts the temperature and flow rate of hot and cold water, for example, in response to command signals sent from a remote control 97 provided on wall surface portion 96e.
[0030] The counter 30 is located above the seating member 10 and the bathtub 90 and is attached to the wall portions 96c, 96d, and 96e. The counter 30 has a bathroom backrest 40, a first section 60 located to the right of the bathroom backrest 40, and a second section 70 located to the left of the bathroom backrest 40. The counter 30 does not have to have either the first section 60 or the second section 70, or it may have only one of the sections. The counter 30 may also have only the bathroom backrest 40.
[0031] The bathroom backrest 40 is located above the seat member 10. The bathroom backrest 40 is formed in a horizontally elongated shape, with the left-to-right dimension being longer than the up-to-down dimension. The left-to-right dimension of the bathroom backrest 40 is formed to correspond to the left-to-right dimension of the seat member 10. The bathroom backrest 40 has a main body portion 41 that protrudes from the wall surface portion 96d, and a back support portion 42 provided at the tip side of the main body portion 41.
[0032] The main body 41 extends in the left-right direction along the wall surface 96d. The top surface 41a of the main body 41 is flat, allowing items such as detergents and sponges to be placed on it. A plurality of ribs 41b are provided inside the main body 41, spaced apart in the left-right direction. These ribs 41b serve as reinforcing members that reinforce the main body 41.
[0033] The back support portion 42 is provided at the tip side of the main body portion 41. The back support portion 42 has a foam member 43 and a sheet 44 that covers the foam member 43. The foam member 43 is supported by the ribs 41b. The foam member 43 has cushioning properties and provides comfortable support for the bather's back. The sheet 44 may be made up of a single layer or multiple layers depending on the desired surface cushioning properties and design.
[0034] The sheet 44 has, for example, waterproof and water-repellent properties and covers the outer surface of the foam 43. The sheet 44 has a support surface 45 that supports the back of the bather sitting on the seat member 10. The support surface 45 is the surface that is exposed in the bathroom 100 among the backrest portions 42. The support surface 45 is the contact surface that contacts the back of the bather sitting on the seat member 10.
[0035] As shown in FIG. 4, in the support surface 45, the dimension D1 from the upper end 45a to the wall surface portion 96d is smaller than the dimension D2 from the lower end 45b to the wall surface portion 96d (D1 < D2). That is, the support surface 45 is inclined obliquely rearward from the lower end 45b toward the upper end 45a. Thereby, the support surface 45 supports the back of the bather in a state inclined obliquely rearward from the waist toward the shoulder. Therefore, when the bather sits on the seat member 10 and leans on the bathroom backrest 40, the pressure on the abdomen is suppressed and the bather can relax.
[0036] The support surface 45 has a first surface 46 that is a curved surface recessed toward the wall surface portion 96d in the vertical direction. The first surface 46 extends downward from the upper end 45a of the support surface 45. As shown in FIG. 3, in the first surface 46, the center O1 of the radius of curvature R1 is located on the side opposite to the wall surface portion 96d from the first surface 46. Also, in the first surface 46, the center O1 of the radius of curvature R1 is located above the upper end 45a of the support surface 45. That is, in the first surface 45, the amount of movement toward the wall surface portion 96d corresponding to the unit height decreases as going from below to above.
[0037] The first surface 46 is formed corresponding to the curved surface of the back of the bather. The radius of curvature R1 of the first surface 46 is 900 mm or more and 1300 mm or less (preferably 1050 mm or more and 1150 mm or less). Thereby, since the contact area between the first surface 46 and the back of the bather becomes large, the back of the bather can be widely supported. Therefore, the bathroom backrest 40 can stably support the bather.
[0038] The support surface 45 has a second surface 47 extending downward from a lower end 46a of the first surface 46. That is, the support surface 45 has the first surface 46 and the second surface 47 located below the first surface 46. The vertical length of the second surface 47 is shorter than the vertical length of the first surface 46.
[0039] As shown in FIG. 4, the lower end 46a of the first surface 46 is located at a position from the lower end 45b of the support surface 45 such that the length from the lower end 45b to the upper end 45a of the support surface 45 is between 1 / 40 and 1 / 4 (H / 40≦lower end 46a≦H / 4). The height H is between 120 mm and 200 mm (e.g., 180 mm). The lower end 46a of the first surface 46 is the upper end of the second surface 47. In other words, the lower end 46a of the first surface 46 is the boundary between the first surface 46 and the second surface 47. Therefore, the vertical length of the second surface 47 is between 1 / 40 and 1 / 4 (H) of the vertical length H of the support surface 45. When the height H is 180 mm, the vertical length of the second surface 47 can be, for example, 30 mm. The second surface 47 supports the area around the waist of the bather.
[0040] As shown in Figure 5, the angle α between a first line BB (shown by a dashed line) connecting the lower end of the second surface 47 (the lower end 45b of the support surface 45) and the lower end 46a of the first surface 46 and a horizontal line CC is larger than the angle β between a second line DD (shown by a dashed line) connecting the upper end of the first surface 46 (the upper end 45a of the support surface 45) and the lower end 46a of the first surface 46 and the horizontal line CC (α > β).
[0041] That is, the second surface 47 has a larger inclination angle with respect to the horizontal line CC than the first surface 46. The formed angle α is between 75 degrees and 90 degrees (for example, 85 degrees). The formed angle β is between 60 degrees and 85 degrees (for example, 75 degrees). This allows the bather to sit deeply in the seating member 10. Therefore, when the bather is washing, for example, by sitting deeply in the seating member 10, the bath backrest 40 can stably support the area around the waist with the second surface 47.
[0042] The second surface 47 is a curved surface that protrudes in the vertical direction away from the wall surface portion 96d. As shown in FIG. 5, the center O2 of the radius of curvature R2 of the second surface 47 is located on the wall surface portion 96d side. The center O2 of the radius of curvature R2 of the second surface 47 is located below the lower end 45b of the support surface 45 (the lower end of the second surface 47). The radius of curvature R2 is, for example, 100 mm or more and 300 mm or less. As a result, the dimension from the lower end 46a of the first surface 46 to the wall surface portion 96d is smaller than the dimension from the lower end 45b of the support surface 45 to the wall surface portion 96d.
[0043] As a result, support surface 45 is formed in a gentle wave shape in the vertical direction by first surface 46 and second surface 47. Support surface 45 has first surface 46 and second surface 47 that are ergonomic. Therefore, bathroom backrest 40 allows the bather to lean against support surface 45 comfortably.
[0044] At least one end portion located above or below the support surface 45 is a curved surface that protrudes in the vertical direction away from the wall surface portion 96d. In this example, both the upper end portion 50 and the lower end portion 51 of the back support portion 42 are curved surfaces.
[0045] The upper end 50 located above the support surface 45 is a curved surface that protrudes in the vertical direction away from the wall surface portion 96d. That is, the upper end 50 is a curved surface that extends obliquely upward and rearward from the upper end 45a of the support surface 45.
[0046] Furthermore, the lower end 51 located below the support surface 45 is a curved surface that protrudes in the vertical direction away from the wall surface portion 96d. That is, the lower end 51 is a curved surface that extends diagonally downward and rearward from the lower end 45b of the support surface 45.
[0047] This allows the upper end 50 and the lower end 51 to make smooth contact with the bather's back. Also, by making the upper end 50 and the lower end 51 curved, the bathroom backrest 40 can give an overall soft impression. Furthermore, by processing the lower end 46a with a curved surface that protrudes on the side opposite the wall surface portion 96d, it is possible to make smooth contact with the bather's back.
[0048] The bathroom backrest 40 according to the first embodiment has a support surface 45 that allows the bather to assume a relaxed posture. Therefore, the bathroom backrest 40 can be designed to improve the comfort of the bather.
[0049] The first section 60 extends to the right from the bathroom backrest 40. The first section 60 is continuous with the bathroom backrest 40. The first section 60 may extend, for example, above the bathtub 90. As shown in FIG. 1, the top surface 61 of the first section 60 is flat and has a depth dimension greater than the top surface 41a of the bathroom backrest 40. This allows cleaning agents such as soap, body wash, and shampoo, as well as other items, to be placed on the top surface 61 of the first section 60. The bather can also place their hands on the first section 60 to move between the floor section 95 and the bathtub 90.
[0050] The second section 70 is located to the left of the bathroom backrest 40. The second section 70 is continuous with the bathroom backrest 40. As shown in FIG. 1, the second section 70 is provided, for example, on the wall surface portion 96e. That is, the second section 70 extends forward from the left end of the bathroom backrest 40. As a result, the counter 30 is formed in an L-shape when viewed from above in a plan view.
[0051] The upper surface 71 of the second section 70 is flat and has a depth dimension greater than the upper surface 41a of the bathroom backrest 40. This allows for cleaning agents such as soap, body wash, and shampoo, as well as other items, to be placed on the upper surface 71 of the second section 70. The bather can also place their hands on the second section 70 when sitting on or getting off the seating member 10.
[0052] As shown in Figure 2, a water discharge section 75 that discharges hot and cold water downward is provided on the underside of the second section 70. The bather places a washbasin on the upper surface 11 of the seat member 10 and operates the remote control 97 to cause the water discharge section 75 to discharge hot and cold water toward the washbasin.
[0053] FIG. 6 is a cross-sectional view similar to FIG. 5, showing a backrest for a bathroom according to a second embodiment. FIG. 7 is a cross-sectional view similar to FIG. 5, showing a backrest for a bathroom according to a third embodiment. In the first embodiment, the support surface 45 is described as a curved surface. However, this is not a limitation of the present invention. For example, as in the bathroom backrest 80 shown in FIG. 6, the support surface 81 may be a linear inclined surface that slopes diagonally forward from the upper end 81a to the lower end 81b. That is, the dimension D1 from the upper end 81a to the wall surface 96d of the support surface 81 is smaller than the dimension D2 from the lower end 81b to the wall surface 96d. The bathroom backrest 80 may also have a curved surface that protrudes in the vertical direction away from the wall surface 96d at at least one end located above or below the support surface 81.
[0054] 7, the support surface 81 of the second embodiment may have a first surface 84 and a second surface 85. The first surface 84 and the second surface 85 form a linearly inclined surface in the vertical direction. The angle α between the second surface 85 and the horizontal line CC is larger than the angle β between the first surface 84 and the horizontal line CC (α>β). The length of the lower end 84a of the first surface 84 from the lower end 81b of the support surface 81 is greater than or equal to 1 / 40 and less than or equal to 1 / 4 of the height dimension from the lower end 81b to the upper end 81a of the support surface 81.
[0055] Bathroom backrest 83 may have first surface 84 that is a curved surface like first surface 46 in the first embodiment, and second surface 85 that is formed in a straight line. Bathroom backrest 83 may have second surface 85 that is a curved surface like second surface 47 in the first embodiment, and first surface 84 that is formed in a straight line.
[0056] In the bathroom backrests 80 and 83 according to the second and third embodiments, the bather can relax with less pressure on the abdomen, thus improving the comfort of the bather.
[0057] Embodiments may include the following features. (Configuration 1) A horizontally long bathroom backrest located above a horizontally long seat member provided along the wall of the bathroom, a support surface for supporting the back of a bather seated on the seat member; A bathroom backrest, characterized in that the dimension of the support surface from its upper end to the wall portion is smaller than the dimension from its lower end to the wall portion. (Configuration 2) The support surface has a first surface that is a curved surface recessed toward the wall surface portion in the vertical direction, The bathroom backrest according to configuration 1, wherein the center of the radius of curvature of the first surface is located above the upper end of the support surface. (Configuration 3) The bathroom backrest according to configuration 2, wherein the radius of curvature of the first surface is 900 mm or more and 1300 mm or less. (Configuration 4) The support surface has a first surface and a second surface extending downward from a lower end of the first surface, A bathroom backrest described in any one of configurations 1 to 3, characterized in that the angle between a first line connecting the lower end of the second surface and the lower end of the first surface and the horizontal line is larger than the angle between a second line connecting the upper end of the first surface and the lower end of the first surface and the horizontal line. (Configuration 5) The support surface has a first surface and a second surface extending downward from a lower end of the first surface, The backrest for a bathroom according to any one of configurations 1 to 4, wherein the second surface is a curved surface that protrudes in the vertical direction away from the wall surface portion. (Configuration 6) The support surface has a first surface and a second surface extending downward from a lower end of the first surface, A bathroom backrest described in any one of configurations 1 to 5, characterized in that the lower end of the first surface is located at a position where the length from the lower end of the support surface is greater than 1 / 40 and less than 1 / 4 of the height dimension from the lower end to the upper end of the support surface. (Configuration 7) A bathroom backrest as described in any one of configurations 1 to 6, characterized in that at least one end located above or below the support surface is a curved surface that protrudes in the vertical direction toward the opposite side from the wall surface portion.
[0058] The above describes the embodiments of the present invention. However, the present invention is not limited to these descriptions. Design modifications made by a person skilled in the art to the above-described embodiments are also within the scope of the present invention as long as they incorporate the features of the present invention. For example, the shape, dimensions, materials, and arrangement of each element of a bathroom backrest are not limited to those illustrated and can be modified as appropriate. Furthermore, the elements of the above-described embodiments can be combined to the extent technically possible, and such combinations are also within the scope of the present invention as long as they incorporate the features of the present invention. [Explanation of symbols]
[0059] 1 bathroom unit 10 Seat member 11 Top side 20 Faucet body 30 Counters 40 Bathroom backrest 41 Main body 41a Top side 41b Rib 42 Backrest 43 Foam 44 seats 45 Support surface 45a top end 45b bottom end 46 Page 1 46a bottom end 47 Side 2 50 Upper end 51 Lower end 60 Part 1 61 Top surface 70 Part 2 71 Top surface 75 Water outlet 80 Bathroom backrest 81 Support surface 81a top end 81b bottom end 83 Bathroom backrest 84 Page 1 84a bottom end 85 2nd page 90 Bathtub 95 Floor 96a~96f Wall section 97 Remote Control 100 bathrooms R1, R2 radius of curvature O1, O2 center
Claims
1. A horizontally long bathroom backrest located above a horizontally long seat member provided along the wall of the bathroom, a support surface for supporting the back of a bather seated on the seat member; A bathroom backrest, characterized in that the dimension of the support surface from its upper end to the wall portion is smaller than the dimension from its lower end to the wall portion.
2. The support surface has a first surface that is a curved surface recessed toward the wall surface portion in the vertical direction, The backrest for a bathroom according to claim 1, wherein the center of the radius of curvature of the first surface is located above the upper end of the support surface.
3. 3. The backrest for a bathroom according to claim 2, wherein the radius of curvature of the first surface is 900 mm or more and 1300 mm or less.
4. The support surface has a first surface and a second surface extending downward from a lower end of the first surface, The backrest for a bathroom as described in claim 1, characterized in that the angle between a first line connecting the lower end of the second surface and the lower end of the first surface and the horizontal line is larger than the angle between a second line connecting the upper end of the first surface and the lower end of the first surface and the horizontal line.
5. The support surface has a first surface and a second surface extending downward from a lower end of the first surface, The backrest for a bathroom according to claim 1, wherein the second surface is a curved surface that protrudes in the vertical direction away from the wall surface portion.
6. The support surface has a first surface and a second surface extending downward from a lower end of the first surface, The bathroom backrest of claim 1, characterized in that the lower end of the first surface is located at a position where the length from the lower end of the support surface is greater than 1 / 40 and less than 1 / 4 of the height dimension from the lower end to the upper end of the support surface.
7. The bathroom backrest according to claim 1, characterized in that at least one end located above or below the support surface is a curved surface that protrudes in the vertical direction opposite the wall portion.
Citation Information
Patent Citations
Bathroom backrest
JP2013063170A