Mirror unit

Abstract

To provide an aesthetically pleasing mirror unit. [Solution] A mirror unit comprising a backing plate, a first adhesive portion bonded to the surface of the backing plate, and a mirror portion facing the backing plate and bonded to the first adhesive portion, wherein the mirror unit is provided between the backing plate and the mirror portion and has a fall suppression portion that supports the mirror portion when the mirror portion moves downward relative to the backing plate.

Description

Technical Field

[0001] Aspects of the present invention generally relate to a mirror unit.

Background Art

[0002] A mirror unit in which a mirror part is fixed by a frame is known (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the mirror unit according to Patent Document 1, when the mirror part is viewed from the front, a part of the mirror part is covered by the frame, so there is a risk of deterioration in design.

[0005] The present invention has been made based on the recognition of such problems, and an object thereof is to provide a mirror unit with a good appearance.

Means for Solving the Problems

[0006] A first invention is a mirror unit including a back plate part, a first adhesive part adhered to the surface of the back plate part, and a mirror part adhered to the first adhesive part facing the back plate part, wherein a drop prevention part is provided between the back plate part and the mirror part, and the drop prevention part supports the mirror part when the mirror part moves downward with respect to the back plate part.

[0007] This mirror unit prevents the mirror from falling off the backing plate thanks to a fall prevention mechanism provided between the backing plate and the mirror. Therefore, in a mirror unit where there is no retaining mechanism such as a frame to hold the backing plate and the mirror on the outer circumference of the mirror, it is possible to provide a mirror unit that prevents the mirror from falling off while maintaining an aesthetically pleasing appearance.

[0008] The second invention is a mirror unit characterized in that, in the first invention, a part of the fall suppression part is bonded to the mirror part by a second adhesive part.

[0009] With this mirror unit, the fall prevention mechanism is fixed to the mirror part by adhesive, eliminating the need for machining such as drilling holes in the mirror part to attach the fall prevention mechanism, thus preventing a decrease in the design quality of the mirror unit.

[0010] The third invention is a mirror unit in which, in the second invention, the fall suppression part has an engaging part provided on the back surface of the mirror part and an engaged part provided on the surface of the back plate part, which engages with the engaging part when the mirror part moves downward relative to the back plate part.

[0011] With this mirror unit, even if the adhesive between the mirror and the backing plate comes undone, the engaging part engages with the engaged part, thus preventing the mirror from moving downward and forward.

[0012] The fourth invention is a mirror unit in which, in the third invention, the surface of the backing plate portion has an inner portion and a frame portion that protrudes forward of the inner portion and surrounds the periphery of the inner portion, and the fall suppression portion is characterized in that when the mirror portion moves downward relative to the backing plate portion, the engaging portion engages with the engaged portion inside the frame portion.

[0013] This mirror unit allows the thickness of the engaging and engaged parts to be absorbed inside the frame, eliminating the gap between the mirror and the backing plate when the mirror unit is viewed from the side.

[0014] The fifth invention is the third invention, wherein the engaging portion has a first portion bonded to the second adhesive portion, a second portion extending from the first portion toward the backing plate portion, and a third portion extending downward from the second portion, and in a cross-sectional view, the lower end of the first portion is point A1, the upper end of the first portion is point B1, and point C1 is located on the second portion or the third portion, above point A1, with the maximum distance from point A1 and closest to the backing plate portion, and a line connecting point A1 and point B1. The mirror unit is characterized in that, when dimension h1 is the dimension of a portion, L1 is the dimension of the line segment connecting point A1 and point C1, α1 is the angle between line segments A1B1 and A1C1, t1 is the thickness dimension of the second adhesive portion, K1 is the allowable coefficient of the second adhesive portion, D1 is the dimension between the mirror portion and the back plate portion, and d1 is the dimension from the back surface of the mirror portion to the rear end of the engaging portion, then when dimension L1 ≥ dimension d1, the following formulas (1) and (2) are satisfied, and when dimension L1 < dimension d1, the following formula (3) is satisfied. d1≦D1≦L1sin(α1+β1)…(1) β1 = arcsin(K1 × t1 / h1) ... (2) D1 = d1 ... (3)

[0015] This mirror unit suppresses the movement of the engaging portion, thereby reducing the horizontal force acting on the second adhesive portion, which is one of the two forces acting on the second adhesive portion. Consequently, by suppressing the resultant force generated at the engaging portion, the likelihood of the engaging portion coming apart can be reduced.

[0016] The sixth invention is the third invention, wherein the engaged portion has a first portion bonded to the back plate portion by a third adhesive portion, a second portion extending from the first portion toward the mirror portion, and a third portion extending upward from the second portion, wherein in cross-sectional view, the lower end of the first portion is at point A2, the upper end of the first portion is at point B2, the second portion is on or the third portion is on, and the third portion is located above point A2 and has the maximum dimension from point A2 and is closest to the mirror portion The mirror unit is characterized in that, when the nearest point C2 is defined as the dimension h2 of the line segment connecting point A2 and point B2, the dimension L2 of the line segment connecting point A2 and point C2, the angle α2 between line segments A2B2 and A2C2, the thickness dimension t2 of the third adhesive portion, the tolerance coefficient K2 of the third adhesive portion, the dimension D2 between the mirror portion and the back plate portion, and the dimension d2 from the back plate portion to the front end of the engaged portion, the mirror unit satisfies the following formulas (4) and (5). d2≦D2≦L2sin(α2+β2)…(4) β2 = arcsin(K2 × t2 / h2) ... (5)

[0017] This mirror unit suppresses the movement of the engaged portion, thereby reducing the horizontal force acting on the third adhesive portion, which is one of the two forces acting on the third adhesive portion. Consequently, by suppressing the resultant force generated on the engaged portion, the likelihood of the engaged portion detaching can be reduced.

[0018] The seventh invention is a mirror unit in which, in the first invention, the fall suppression part is provided above 50% of the length of the mirror part in the height direction.

[0019] With this mirror unit, even if the mirror part detaches from the backing plate, the engagement point between the engaging part and the engaged part can be controlled from the upper side of the mirror part and the backing plate. This reduces the amount of rotational displacement when the mirror part tries to rotate forward, effectively suppressing the mirror part from tipping forward. [Effects of the Invention]

[0020] According to an aspect of the present invention, an aesthetically pleasing mirror unit is provided.

Brief Description of the Drawings

[0021] [Figure 1] It is a front view showing a cabinet provided with a mirror unit according to the first embodiment. [Figure 2] It is an exploded perspective view showing the cabinet disassembled. [Figure 3] It is a cross-sectional perspective view showing an enlarged view of part B in FIG. 2. [Figure 4] It is a cross-sectional view of the cabinet in FIG. 1 seen from the direction of arrow A-A. [Figure 5] It is a cross-sectional view showing the case where the mirror part is peeled off from the back plate part. [Figure 6] It is an explanatory view showing the dimensional relationship of the mirror part, the back plate part, the second adhesive part, and the engaging part. [Figure 7] It is an explanatory view of the case where the engaging part is peeled off from the mirror part. [Figure 8] It is an exploded perspective view showing a cabinet provided with a mirror unit according to the second embodiment. [Figure 9] It is a cross-sectional view showing an enlarged view of the fall prevention part. [Figure 10] It is an exploded perspective view showing a cabinet provided with a mirror unit according to the third embodiment. [Figure 11] It is a cross-sectional view showing an enlarged view of the fall prevention part. [Figure 12] It is a front view showing a cabinet provided with a mirror unit according to the fourth embodiment. [Figure 13] It is a cross-sectional view of the cabinet in FIG. 12 seen from the direction of arrow C-C. [Figure 14] It is a front view showing a cabinet provided with a mirror unit according to the fifth embodiment. [Figure 15] It is a cross-sectional view of the cabinet in FIG. 14 seen from the direction of arrow D-D. [Figure 16] It is an exploded perspective view showing a cabinet provided with a mirror unit according to the sixth embodiment. [Figure 17]This is a cross-sectional view showing a magnified view of the fall prevention section and the lower end of the cabinet. [Figure 18] This is an explanatory diagram showing the dimensional relationships between the mirror portion, the backing plate portion, the third adhesive portion, and the engaged portion. [Figure 19] This is an explanatory diagram showing what happens when the engaged part detaches from the backing plate. [Figure 20] This is an explanatory diagram similar to Figure 6, showing the fall suppression unit according to the seventh embodiment. [Figure 21] This is an explanatory diagram similar to Figure 7, which shows the case when the engaging part detaches from the mirror part. [Figure 22] This is an explanatory diagram similar to Figure 6, showing the fall suppression unit according to the eighth embodiment. [Figure 23] This is an explanatory diagram similar to Figure 7, which shows the case when the engaging part detaches from the mirror part. [Figure 24] This is an explanatory diagram similar to Figure 6, showing the fall suppression unit according to the ninth embodiment. [Figure 25] This is an explanatory diagram similar to Figure 7, which shows the case when the engaging part detaches from the mirror part. [Figure 26] This is an explanatory diagram similar to Figure 6, showing a fall suppression unit according to the 10th embodiment. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described below with reference to the drawings. In each drawing, similar components are denoted by the same reference numerals, and detailed descriptions are omitted as appropriate. Also, in each drawing, the scale of each component is shown differently for the sake of explanation. For example, the thickness dimension t1 of the second adhesive portion 63 and the thickness dimension t2 of the third adhesive portion 73, described later, are formed to be thinner than the thickness shown in the drawings.

[0023] Figures 1 to 7 show a first embodiment of the present invention. Figure 1 is a front view showing a cabinet equipped with a mirror unit according to the first embodiment. Figure 2 is an exploded perspective view showing the cabinet disassembled. Figure 3 is a cross-sectional perspective view showing an enlarged view of section B in Figure 2. Figure 4 is a cross-sectional view of the cabinet shown in Figure 1, taken from the direction indicated by arrow AA.

[0024] As shown in Figures 1 and 2, the cabinet 10 comprises a shelf section 20 and a mirror unit 30. The cabinet 10 is installed in a bathroom space, such as a dressing room or washroom. The cabinet 10 may also be installed in a kitchen. In this embodiment, the direction in which the user facing the cabinet 10 is positioned is described as "front," and the opposite side is described as "back." Also, "up," "down," "left," and "right" are described as directions as seen from the perspective of the user facing the cabinet 10.

[0025] The shelf section 20 is formed in a box shape with an open front. The shelf section 20 has a storage space S1 inside which items such as toiletries and hair dryers can be stored. The storage space S1 is provided with a plate section 21 on which items can be stored. As shown in Figures 2 and 4, the shelf section 20 has a plurality of hinges 23. One end of each hinge 23 is fixed to the shelf section 20, and the other end is fixed to the back plate section 40, which will be described later. The mirror unit 30 can be opened and closed relative to the shelf section 20 by the hinges 23.

[0026] The mirror unit 30 constitutes the front part of the cabinet 10. In this example, the cabinet 10 has one mirror unit 30. Note that the number of mirror units 30 provided in the cabinet 10 is not limited to one, but may be two or more. The mirror unit 30 is a hinged door that can be opened and closed relative to the shelf section 20. When closed, the mirror unit 30 covers the front of the storage space S1 of the shelf section 20, and when open, it opens the storage space S1. The mirror unit 30 is equipped with a back plate section 40, a mirror section 50, and a fall prevention section 60.

[0027] The back panel 40 is attached to the shelf 20 via hinges 23. The back panel 40 is formed to match the outer shape of the shelf 20 and covers the storage space S1 of the shelf 20. The surface 41 of the back panel 40 has an inner portion 41a and a frame portion 41b that protrudes forward of the inner portion 41a and surrounds the inner portion 41a. That is, the inner portion 41a is recessed toward the rear of the frame portion 41b. In other words, the surface 41 of the back panel 40 is formed in a stepped manner in the front-to-back direction by the inner portion 41a and the frame portion 41b. A space S2 is formed between the inner portion 41a and the mirror portion 50. The back surface 42 of the back panel 40 is a flat surface.

[0028] The frame portion 41b has an upper part 41b1 located above the inner portion 41a, a lower part 41b2 located below the inner portion 41a, a left part 41b3 located to the left of the inner portion 41a, and a right part 41b4 located to the right of the inner portion 41a. The upper part 41b1 and the lower part 41b2 extend in the left-right direction, corresponding to the width dimension (left-right dimension) of the shelf portion 20. The left part 41b3 and the right part 41b4 extend in the up-down direction, corresponding to the height dimension (up-down dimension) of the shelf portion 20.

[0029] Furthermore, the surface 41 of the back plate portion 40 has a first connecting portion 41c connecting the inner portion 41a and the upper portion 41b1, a second connecting portion 41d connecting the inner portion 41a and the lower portion 41b2, a third connecting portion 41e connecting the inner portion 41a and the left portion 41b3, and a fourth connecting portion 41f connecting the inner portion 41a and the right portion 41b4.

[0030] The third connecting portion 41e and the fourth connecting portion 41f are each provided with holes 43 drilled in the left-right direction (only the hole 43 of the third connecting portion 41e is shown in Figure 3). These holes 43 are for attaching the engaging portion 65, which will be described later. The holes 43 are located on the upper end side of the third connecting portion 41e and the fourth connecting portion 41f (above the midpoint of the height of the third connecting portion 41e and the fourth connecting portion 41f). The holes 43 are located, for example, above the surface heater 52, which will be described later.

[0031] The first adhesive portion 47 is bonded to the surface 41 of the backing plate portion 40. Specifically, the first adhesive portion 47 is bonded to the left portion 41b3 and the right portion 41b4 of the frame portion 41b so as to extend vertically. The first adhesive portion 47 is used to bond and fix the mirror portion 50 to the backing plate portion 40. The first adhesive portion 47 is, for example, a double-sided tape with cushioning properties. As a result, the first adhesive portion 47 absorbs external forces applied to the mirror portion 50. The first adhesive portion 47 may also be an adhesive or the like. The first adhesive portion 47 may also be provided on the upper portion 41b1 or lower portion 41b2 of the frame portion 41b.

[0032] Furthermore, a sealing material (not shown) may be provided between the frame portion 41b and the mirror portion 50. This sealing material is, for example, located outside the first adhesive portion 47 and provided around the entire circumference of the frame portion 41b. The sealing material prevents water, detergent, soap, and dirt from penetrating between the backing plate portion 40 and the mirror portion 50. This prevents water, detergent, soap, and dirt from adhering to the first adhesive portion 47 and reducing the adhesive strength of the first adhesive portion 47.

[0033] The mirror portion 50 is bonded to the first adhesive portion 47 facing the back plate portion 40. The mirror portion 50 is formed in the shape of a thin plate, for example, with an outer shape that is almost the same as the outer shape of the back plate portion 40. As shown in Figure 1, when the mirror unit 30 is viewed from the front, no other components other than the mirror portion 50 are visible. That is, the entire surface 50a of the mirror portion 50 is exposed in the mirror unit 30. As a result, the entire surface 50a of the mirror unit 30 is a mirror surface, resulting in a clean design. On the back surface 50b of the mirror portion 50, the engaging portion 61 of the fall prevention portion 60, which will be described later, is bonded by the second adhesive portion 63. The mirror unit 30 does not have a frame or the like that prevents the mirror portion 50 from falling off the back plate portion 40 by the fall prevention portion 60.

[0034] For example, if a mirror unit is installed around plumbing fixtures in a bathroom, changing room, washroom, kitchen, or toilet, water droplets and dirt are likely to accumulate on the mirror surface. In such cases, if the mirror unit has a frame, when wiping away water droplets and dirt from the mirror surface, water droplets and dirt may seep between the mirror and the frame, making it unsightly. Furthermore, the area between the mirror and the frame may become prone to dirt buildup, potentially compromising the cleanliness of the mirror unit.

[0035] In contrast, the mirror unit 30 does not support the mirror portion 50 with a frame or the like. The entire surface 50a of the mirror portion 50 is a flat mirror surface. Therefore, if water droplets or dirt adhere to the surface 50a of the mirror portion 50, the mirror unit 30 can easily wipe them off. As a result, the mirror unit 30 can reduce the amount of water droplets and dirt remaining on the surface 50a of the mirror portion 50, thus maintaining a good appearance and cleanliness. In addition, because the surface 50a of the mirror portion 50 is a flat surface, cleaning tools such as cloths can be easily cleaned without getting caught.

[0036] As shown in Figure 2, a surface heater 52 is provided on the back surface 50b of the mirror portion 50. The surface heater 52 is connected to a power source. The surface heater 52 warms the mirror portion 50, thereby suppressing fogging of the mirror portion 50. The surface heater 52 is provided as needed and is not required.

[0037] The fall prevention section 60 is provided between the backing plate section 40 and the mirror section 50. The fall prevention section 60 supports the mirror section 50 when the adhesive force of the first adhesive section 47 decreases and the mirror section 50 moves downward relative to the backing plate section 40. In other words, the fall prevention section 60 prevents the mirror section 50 from falling off the backing plate section 40.

[0038] As shown in Figure 1, the fall suppression part 60 is positioned above 50% of the length of the mirror part 50 in the height direction (vertical direction). In Figure 1, the center of the mirror part 50 in the height direction (50% position) is indicated by the dashed line OO. The fall suppression part 60 has an engaging part 61 provided on the back surface 50b of the mirror part 50 and an engaged part 65 provided on the surface surface 41 of the back plate part 40.

[0039] The engaging portion 61 is attached to the back surface 50b of the mirror portion 50 by the second adhesive portion 63. In other words, a part of the fall suppression portion 60 (the engaging portion 61) is bonded to the mirror portion 50 by the second adhesive portion 63. The second adhesive portion 63 is, for example, double-sided tape or adhesive. As a result, there is no need to drill holes or process the mirror portion 50 to attach the engaging portion 61, so the mirror portion 50 can be made as thin as possible. Consequently, the weight of the mirror portion 50 can be reduced.

[0040] One engaging portion 61 is provided in the center of the mirror portion 50 in the left-right direction. Multiple engaging portions 61 may be provided on the back surface 50b of the mirror portion 50. Furthermore, it is preferable that the engaging portion 61 is provided on the upper end side of the mirror portion 50. As a result, the second adhesive portion 63 is separated from the surface heater 52, thereby suppressing a decrease in adhesive strength due to the heat generated by the surface heater 52.

[0041] The engaging portion 61 has a first portion 61a bonded to the second adhesive portion 63, a second portion 61b extending from the first portion 61a toward the inner portion 41a (rear) of the backing plate portion 40, and a third portion 61c extending downward from the second portion 61b. The engaging portion 61 is formed by the first to third portions 61a to 61c to form a hook shape with an open bottom. In this example, the lower end of the third portion 61c is located below the lower end of the first portion 61a.

[0042] The engaging portion 61 is located within the space S2 between the inner portion 41a and the mirror portion 50. As a result, the engaging portion 61 is located inside the frame portion 41b, and is therefore not visible when the mirror unit 30 is viewed from the side. Consequently, the mirror unit 30 can have a clean and uncluttered design.

[0043] The engaged portion 65 is attached to the back plate portion 40. Specifically, the engaged portion 65 is attached to the holes 43 of the third connecting portion 41e and the fourth connecting portion 41f. The engaged portion 65 is located in front of the inner portion 41a and extends between the third connecting portion 41e and the fourth connecting portion 41f. That is, the engaged portion 65 is located within the space S2. The engaged portion 65 is, for example, a rod-shaped cylindrical body filled inside.

[0044] The engaged portion 65 may be, for example, a rectangular prism. Alternatively, the engaged portion 65 may be a hollow cylindrical body. Furthermore, the engaged portion 65 may be a string or wire stretched between the third connecting portion 41e and the fourth connecting portion 41f. The engaged portion 65 may have any shape or material as long as the engaging portion 61 can engage with it. Also, the engaged portion 65 is not limited to being attached to the third connecting portion 41e and the fourth connecting portion 41f; it may be attached to any position on the back plate portion 40, such as the first connecting portion 41c, as long as the engaging portion 61 can engage with it.

[0045] As shown in Figure 4, when the mirror portion 50 is attached to the back plate portion 40, the engaged portion 65 is located within the engaging portion 61. That is, the engaged portion 65 is located below the second portion 61b of the engaging portion 61 and in front of the third portion 61c. In this case, the engaging portion 61 and the engaged portion 65 are in a non-contact state. As a result, no force is applied to the engaging portion 61 from the engaged portion 65, and thus, peeling from the mirror portion 50 can be suppressed.

[0046] Figure 5 is a cross-sectional view showing the case where the mirror portion has detached from the backing plate. There are two ways in which the mirror portion 50 can detach from the backing plate portion 40: the mirror portion 50 detaches from the first adhesive portion 47, and the first adhesive portion 47 detaches from the backing plate portion 40. Figure 5 shows the case where the mirror portion 50 detaches from the first adhesive portion 47, as indicated by the arrow.

[0047] The fall prevention part 60 engages with the engaged part 65 inside the frame part 41b (space S2) when the mirror part 50 moves downward relative to the back plate part 40. In other words, when the mirror part 50 moves relative to the back plate part 40, the engaging part 61 of the fall prevention part 60 moves together with the mirror part 50 and comes into contact with the engaged part 65. As a result, the mirror part 50 is supported by the engaged part 65, and further movement is restricted. Therefore, the mirror unit 30 is prevented from the mirror part 50 falling from the back plate part 40.

[0048] The fall prevention section 60 is provided between the back plate section 40 and the mirror section 50. This allows the mirror unit 30 to have the entire surface 50a of the mirror section 50 as a mirror surface without using, for example, a frame to support the mirror section 50. Furthermore, the fall prevention section 60 is not visible from the outside. Thus, the mirror unit 30 has an excellent design.

[0049] The engaging portion 61 is bonded to the back surface 50b of the mirror portion 50 by the second adhesive portion 63. Therefore, the dimensional relationship for preventing the engaging portion 61 from peeling off from the mirror portion 50 will be explained with reference to Figures 6 and 7. Figure 6 is an explanatory diagram showing the dimensional relationships between the mirror portion, the backing plate portion, the second adhesive portion, and the engaging portion. Figure 7 is an explanatory diagram showing what happens when the engaging portion detaches from the mirror portion.

[0050] As shown in Figure 6, in a cross-sectional view, the lower end of the first portion 61a of the engaging portion 61 is denoted as point A1, and the upper end of the first portion 61a is denoted as point B1. Point C1 is located on the second portion 61b or the third portion 61c, above point A1, with the maximum distance from point A1, and closest to the back plate portion 40. Note that "above point A1" includes the same position as point A1 in the height direction.

[0051] Next, the dimension of the line segment connecting point A1 and point B1 is defined as h1. That is, dimension h1 is the height dimension of the first part 61a. Also, the dimension of the line segment connecting point A1 and point C1 is defined as L1. The angle between line segments A1B1 and A1C1 is defined as α1. The thickness dimension of the second adhesive part 63 is defined as t1. Also, the tolerance coefficient of the second adhesive part 63 is defined as K1. The tolerance coefficient K1 is a coefficient that determines the degree of peeling that is guaranteed. The tolerance coefficient K1 depends on the material and performance of the members related to the second adhesive part 63 and is determined by calculation, experimental values, or empirical values. The tolerance coefficient K1 can be, for example, 1 or 2.

[0052] The dimension D1 is the distance between the mirror portion 50 and the back plate portion 40. That is, dimension D1 is the depth dimension (front-to-back dimension) of the space S2 between the back surface 50b of the mirror portion 50 and the inner portion 41a. Also, dimension d1 is the depth dimension (front-to-back dimension) from the back surface 50b of the mirror portion 50 to the rear end of the engaging portion 61. That is, dimension d1 is the front-to-back dimension of the engaging portion 61 plus the thickness dimension t1 of the second adhesive portion 63.

[0053] In such cases, when dimension L1 ≥ dimension d1, the following equations (1) and (2) are satisfied, and when dimension L1 < dimension d1, the following equation (3) is satisfied. d1≦D1≦L1sin(α1+β1)…(1) β1 = arcsin(K1 × t1 / h1) ... (2) D1 = d1 ... (3)

[0054] In this example, dimension L1 ≥ dimension d1. Therefore, each component has dimensions that satisfy equations (1) and (2). As a result, as shown in Figure 7, when the engaging portion 61 begins to detach from the mirror portion 50, the engaging portion 61 contacts the inner portion 41a of the backing plate portion 40, and its movement is suppressed. In this state, the horizontal force acting on the second adhesive portion 63 is suppressed, out of the vertical and horizontal forces acting on it. Therefore, by suppressing the resultant force generated on the engaging portion 61, it is possible to prevent the engaging portion 61 from detaching. The case where equation (3) is satisfied when dimension L1 < dimension d1 will be explained in the tenth embodiment described later.

[0055] Next, a second embodiment of the present invention will be described with reference to Figures 8 and 9. In the second embodiment, the engaging portion and the engaged portion of the fall suppression unit are made of the same material. Figure 8 is an exploded perspective view showing a cabinet equipped with a mirror unit according to the second embodiment. Figure 9 is a cross-sectional view showing an enlarged view of the fall suppression section.

[0056] The fall prevention section 70 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 70 has an engaging section 61 and an engaged section 71. The engaging section 61 and the engaged section 71 are made of the same material.

[0057] The engaged portion 71 is attached to the inner portion 41a of the back plate portion 40 at a position corresponding to the engaged portion 61. The engaged portion 71 is attached to the inner portion 41a by the third adhesive portion 73 with the engaged portion 61 inverted vertically. The third adhesive portion 73 is, for example, double-sided tape or adhesive. The engaged portion 71 may also be attached to the inner portion 41a by screws or the like.

[0058] The engaged portion 71 has a first portion 71a bonded to the third adhesive portion 73, a second portion 71b extending from the first portion 71a toward the mirror portion 50 (forward), and a third portion 71c extending upward from the second portion 71b. The engaged portion 71 is formed in a hook shape with an open top by the first to third portions 71a to 71c. In this example, the upper end of the third portion 71c is located above the upper end of the first portion 71a.

[0059] As shown in Figure 9, when the mirror portion 50 is attached to the back plate portion 40, the third portion 71c of the engaged portion 71 is located within the engaging portion 61. That is, the third portion 71c of the engaged portion 71 is located below the second portion 61b of the engaging portion 61 and in front of the third portion 61c. In this case, the engaging portion 61 and the engaged portion 71 are in a non-contact state. As a result, the engaging portion 61 is not subjected to force from the engaged portion 71, and thus peeling from the mirror portion 50 can be suppressed.

[0060] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 61 engages with the engaged portion 71 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the fall suppression portion 70 moves together with the mirror portion 50 and comes into contact with the engaged portion 71. As a result, the mirror portion 50 is supported by the engaged portion 71, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0061] Next, a third embodiment of the present invention will be described with reference to Figures 10 and 11. In the third embodiment, two fall suppression units are provided spaced apart in the left-right direction. Figure 10 is an exploded perspective view showing a cabinet equipped with a mirror unit according to the third embodiment. Figure 11 is a cross-sectional view showing an enlarged view of the fall suppression section.

[0062] The fall prevention section 80 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 80 is provided on the left side 41b3 and the right side 41b4 of the frame section 41b of the back plate section 40, respectively. The fall prevention section 80 has an engaging section 81 that is attached to the mirror section 50 and an engaged section 83 that is attached to the back plate section 40.

[0063] The engaging portion 81 has a first portion 81a bonded to the second adhesive portion 63, a second portion 81b extending from the first portion 81a toward the inner portion 41a (rear) of the backing plate portion 40, and a third portion 81c extending downward from the second portion 81b. The engaging portion 81 is formed in a hook shape with an open bottom by the first to third portions 81a to 81c. In this example, the lower end of the third portion 81c is located above the lower end of the first portion 81a. It is preferable that the engaging portion 81 is provided on the upper end side of the mirror portion 50. As a result, the second adhesive portion 63 is separated from the surface heater 52, so that the decrease in adhesive strength due to the heat generated by the surface heater 52 can be suppressed.

[0064] The engaged portion 83 is provided on the third connecting portion 41e and the fourth connecting portion 41f of the back plate portion 40 at positions corresponding to the engaging portion 81. The engaged portion 83 has a first portion 83a attached to the third and fourth connecting portions 41e and 41f, and a second portion 83b extending from the first portion 83a in the left-right direction. That is, the engaged portion 83 is formed in an L-shape by the first portion 83a and the second portion 83b.

[0065] The second portion 83b is located in the space S2 between the inner portion 41a and the mirror portion 50. The engaged portion 83 is attached to the third and fourth connecting portions 41e and 41f by means of, for example, double-sided tape or adhesive. The engaged portion 83 may also be attached to the third and fourth connecting portions 41e and 41f by means of, for example, screws.

[0066] As shown in Figure 11, when the mirror portion 50 is attached to the back plate portion 40, the second portion 83b of the engaged portion 83 is located within the engaging portion 81. That is, the second portion 83b of the engaged portion 83 is located below the second portion 81b of the engaging portion 81 and in front of the third portion 81c. In this case, the engaging portion 81 and the engaged portion 83 are in a non-contact state. As a result, no force is applied to the engaging portion 81 from the engaged portion 83, and thus, detachment from the mirror portion 50 can be suppressed.

[0067] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 81 engages with the engaged portion 83 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the fall suppression portion 80 moves together with the mirror portion 50 and comes into contact with the engaged portion 83. As a result, the mirror portion 50 is supported by the engaged portion 83, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0068] Next, a fourth embodiment of the present invention will be described with reference to Figures 12 and 13. In the fourth embodiment, two fall suppression units are provided spaced apart in the left-right direction. Figure 12 is a front view showing a cabinet equipped with a mirror unit according to the fourth embodiment. Figure 13 is a cross-sectional view of the cabinet shown in Figure 12, viewed from the direction indicated by arrow CC.

[0069] The fall prevention section 90 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 90 is provided on the left side 41b3 and the right side 41b4 of the frame section 41b of the back plate section 40, respectively. The fall prevention section 90 may be provided as one unit in the center in the left-right direction, or as three or more units spaced apart in the left-right direction. The fall prevention section 90 has a first mounting section 91 attached to the mirror section 50, a second mounting section 93 attached to the back plate section 40, and a string-like member 95 connecting the first mounting section 91 and the second mounting section 93.

[0070] The first mounting portion 91 is attached to the back surface 50b of the mirror portion 50. As shown in Figure 13, the first mounting portion 91 is formed in an L-shape in cross-section and is bonded to the back surface 50b of the mirror portion 50 by the second adhesive portion 63. Preferably, the first mounting portion 91 is provided on the upper end side of the mirror portion 50. This keeps the second adhesive portion 63 away from the surface heater 52, thereby suppressing a decrease in adhesive strength due to the heat generated by the surface heater 52.

[0071] The second mounting portion 93 is attached to the first connecting portion 41c of the back plate portion 40. As shown in Figure 13, the second mounting portion 93 is formed in an L-shape in cross-section and is bonded to the first connecting portion 41c by the third adhesive portion 73. The second mounting portion 93 may also be attached to the back plate portion 40 by screws or the like.

[0072] The string-like member 95 is fixed at one end to the first mounting portion 91 and at the other end to the second mounting portion 93. The string-like member 95 is made of, for example, cloth, leather, synthetic fiber, or wire. As shown in Figure 13, when the mirror portion 50 is attached to the backing plate portion 40, the string-like member 95 is loose. As a result, the first mounting portion 91 is not subjected to force from the string-like member 95, thus preventing it from peeling off the mirror portion 50. The string-like member 95 may also be directly attached to the backing plate portion 40 and the mirror portion 50, rather than to the first and second mounting portions 91 and 93.

[0073] When the mirror portion 50 moves downward relative to the backing plate portion 40, the string-like member 95 is stretched inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the backing plate portion 40, the first mounting portion 91 of the fall prevention portion 90 moves together with the mirror portion 50 and pulls the string-like member 95. As a result, the mirror portion 50 is supported by the string-like member 95, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the backing plate portion 40.

[0074] Next, a fifth embodiment of the present invention will be described with reference to Figures 14 and 15. In the fifth embodiment, a cloth-like fall suppression part is provided. Figure 14 is a front view showing a cabinet equipped with a mirror unit according to the fifth embodiment. Figure 15 is a cross-sectional view of the cabinet shown in Figure 14, viewed from the direction indicated by arrow DD.

[0075] The fall prevention unit 100 is provided between the back plate 40 and the mirror 50. The fall prevention unit 100 is a cloth-like member made of, for example, cloth, leather, or synthetic fiber, with one end fixed to the back plate 40 and the other end fixed to the mirror 50. One fall prevention unit 100 is provided in the center in the left-right direction. Note that two or more fall prevention units 100 may be provided spaced apart in the left-right direction.

[0076] The fall prevention part 100 is bonded to the back surface 50b of the mirror part 50 by a second adhesive part 63. Preferably, the other end of the fall prevention part 100 is provided on the upper end side of the mirror part 50. This keeps the second adhesive part 63 away from the surface heater 52, thereby suppressing a decrease in adhesive strength due to the heat generated by the surface heater 52. On the other hand, the fall prevention part 100 is bonded to the first connection part 41c of the back plate part 40 by, for example, a third adhesive part 73. Note that the fall prevention part 100 is not limited to the first connection part 41c, but may also be bonded to the inner part 41a or the frame part 41b, etc. The fall prevention part 100 may also be fixed to the back plate part 40 by, for example, screws.

[0077] As shown in Figure 15, when the mirror portion 50 is attached to the back plate portion 40, the fall prevention portion 100 is loose. As a result, the force acting on the second adhesive portion 63 of the fall prevention portion 100 is reduced, and peeling from the mirror portion 50 is suppressed.

[0078] When the mirror portion 50 moves downward relative to the back plate portion 40, the fall-preventing portion 100 is stretched inside the frame portion 41b (space S2). As a result, the mirror portion 50 is supported by the fall-preventing portion 100, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0079] Next, a sixth embodiment of the present invention will be described with reference to Figures 16 to 19. In the sixth embodiment, a mirror portion is also provided on the back side of the mirror portion 50. Figure 16 is an exploded perspective view showing a cabinet equipped with a mirror unit according to the sixth embodiment. Figure 17 is a cross-sectional view showing a magnified view of the fall prevention section and the lower end of the cabinet. Figure 18 is an explanatory diagram showing the dimensional relationship between the mirror portion, the backing plate portion, the third adhesive portion, and the engaged portion. Figure 19 is an explanatory diagram showing what happens when the engaged portion detaches from the backing plate.

[0080] The mirror unit 30 has a mirror portion in addition to the mirror portion 50, and a portion of the back plate portion 40 is also a mirror portion. The back plate portion 40 has a mirror surface on the side opposite the inner portion 41a. In other words, both the front and back surfaces of the exposed surface of the mirror unit 30 are mirror surfaces. The user can use the mirror in both the closed and open states of the mirror unit 30.

[0081] The back plate portion 40 has a main body portion 110 having a frame portion 41b and first to fourth connecting portions 41c to 41f on its surface 41, and another mirror portion 115 having an inner portion 41a on its surface 41. As shown in Figure 17, an upper frame 120 and a lower frame 125 are provided at the upper and lower ends of the main body portion 110. The upper frame 120 and the lower frame 125 are fixed to the main body portion 110 with screws, for example.

[0082] The upper frame 120 and the lower frame 125 are formed in an L-shape, restricting the movement of the other mirror sections 115. The upper frame 120 holds the other mirror sections 115 in place from above. The lower frame 125 supports the other mirror sections 115 from below.

[0083] The upper frame 120 and the lower frame 125 are located on the back side of the mirror portion 50. That is, the upper end of the mirror portion 50 is located above the upper frame 120, and the lower end of the mirror portion 50 is located below the lower frame 125. Therefore, the upper frame 120 and the lower frame 125 are not visible when the mirror portion 50 is viewed from the front.

[0084] The fall prevention section 130 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 130 has an engaging section 131 and an engaged section 135.

[0085] The engaging portion 131 has a first portion 131a bonded to the back surface 50b of the mirror portion 50 by the second adhesive portion 63, a second portion 131b bonded to the back surface 50b of the mirror portion 50 by the second adhesive portion 63, spaced apart from the first portion 131a in the left-right direction, and a third portion 131c connecting the first portion 131a and the second portion 131b. A gap is formed between the third portion 131c and the mirror portion 50. The engaging portion 131 is formed in a U-shape by the first to third portions 131a to 131c. Preferably, the engaging portion 131 is provided on the upper end side of the mirror portion 50. As a result, the second adhesive portion 63 is separated from the surface heater 52, so that the decrease in adhesive strength due to the heat generated by the surface heater 52 can be suppressed.

[0086] The engaged portion 135 has the same shape as the engaged portion 71 of the second embodiment. The engaged portion 135 has a first portion 135a, a second portion 135b, and a third portion 135c, similar to the engaged portion 71. The first portion 135a of the engaged portion 135 is bonded to the inner portion 41a of the back plate portion 40 by the third adhesive portion 73. This eliminates the need to drill holes or process other mirror portions 115 to attach the engaged portion 135, allowing the other mirror portions 115 to be made as thin as possible. As a result, the weight of the other mirror portions 115 can be reduced. One engaged portion 135 is provided in the center of the other mirror portion 115 in the left-right direction. Note that multiple engaged portions 135 may be provided between the first portion 131a and the second portion 131b of the engaging portion 131. Also, multiple engaging portions 131 and engaged portions 135 may be provided.

[0087] As shown in Figure 17, when the mirror portion 50 is attached to the back plate portion 40, the third portion 131c of the engaging portion 131 is located within the engaged portion 135. That is, the third portion 131c of the engaging portion 131 is located above the second portion 135b of the engaged portion 135 and behind the third portion 135c. In this case, the engaging portion 131 and the engaged portion 135 are in a non-contact state. As a result, no force acts on the engaging portion 131 and the engaged portion 135, so it is possible to prevent the engaging portion 131 from peeling off the mirror portion 50 and to prevent the engaged portion 135 from peeling off the other mirror portion 115.

[0088] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 131 engages with the engaged portion 135 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the fall suppression portion 130 moves together with the mirror portion 50 and comes into contact with the engaged portion 135. As a result, the mirror portion 50 is supported by the engaged portion 135, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0089] The engaged portion 135 is bonded to the inner portion 41a by the third adhesive portion 73. Therefore, the dimensional relationship for preventing the engaged portion 135 from peeling off the inner portion 41a will be explained with reference to Figures 18 and 19.

[0090] As shown in Figure 18, in a cross-sectional view, the lower end of the first portion 135a of the engaged portion 135 is denoted as point A2, and the upper end of the first portion 135a is denoted as point B2. Point C2 is located on the second portion 135b or the third portion 135c, above point A2, with the maximum distance from point A2, and closest to the mirror portion 50. Note that "above point A2" includes the same position as point A2 in the height direction.

[0091] The dimension of the line segment connecting point A2 and point B2 is defined as h2. That is, dimension h2 is the height dimension of the first part 135a. The dimension of the line segment connecting point A2 and point C2 is defined as L2. The angle between line segments A2B2 and A2C2 is defined as α2. The thickness dimension of the third adhesive part 73 is defined as t2. The tolerance coefficient of the third adhesive part 73 is defined as K2. The tolerance coefficient K2 is a coefficient that determines the degree of peeling that is guaranteed. The tolerance coefficient K2 depends on the material and performance of the members related to the third adhesive part 73 and is determined by calculation, experimental values, or empirical values. The tolerance coefficient K2 can be, for example, 1 or 2.

[0092] The dimension D2 is the distance between the mirror portion 50 and the back plate portion 40. That is, dimension D2 is the depth dimension (front-to-back dimension) of the space S2 between the back surface 50b of the mirror portion 50 and the inner portion 41a. Also, dimension d2 is the depth dimension (front-to-back dimension) from the inner portion 41a of the back plate portion 40 to the front end of the engaged portion 135. That is, dimension d2 is the front-to-back dimension of the engaged portion 135 plus the thickness dimension t2 of the third adhesive portion 73.

[0093] In such cases, the following equations (4) and (5) are satisfied. d2≦D2≦L2sin(α2+β2)…(4) β2 = arcsin(K2 × t2 / h2) ... (5)

[0094] As a result, as shown in Figure 19, when the engaged portion 135 begins to peel away from the back plate portion 40, the engaged portion 135 comes into contact with the back surface 50b of the mirror portion 50, and its movement is suppressed. In this state, the horizontal force acting on the third adhesive portion 73 is suppressed, out of the two forces acting on it. Therefore, by suppressing the resultant force generated on the engaged portion 135, it is possible to prevent the engaged portion 135 from detaching.

[0095] Next, a seventh embodiment of the present invention will be described with reference to Figures 20 and 21. In the seventh embodiment, the second portion of the engaging portion has a curved portion. Figure 20 is an explanatory diagram similar to Figure 6, showing the fall suppression unit according to the seventh embodiment. Figure 21 is an explanatory diagram similar to Figure 7, showing the case where the engaging portion detaches from the mirror portion.

[0096] The fall prevention unit 150 is provided between the back plate 40 and the mirror 50. The fall prevention unit 150 has an engaging portion 151 and an engaged portion 65. The engaged portion 65 can have any shape or configuration as long as it can engage with the engaging portion 151 when the mirror 50 moves relative to the back plate 40.

[0097] The engaging portion 151 is provided in place of the engaging portion 61 of the first embodiment. The engaging portion 151 has a first portion 152 bonded to the second adhesive portion 63, a second portion 153 extending from the first portion 152 toward the backing plate portion 40, and a third portion 154 extending downward from the second portion 153.

[0098] The second part 153 has a horizontal part 153a that extends horizontally from the first part 152 toward the back plate part 40, and a curved part 153b that connects the horizontal part 153a and the third part 154. The curved part 153b is formed in a curved shape that protrudes outward.

[0099] As shown in Figure 20, when the mirror portion 50 is attached to the back plate portion 40, the engaged portion 65 is located within the engaging portion 151. That is, the engaged portion 65 is located below the second portion 153 of the engaging portion 151 and in front of the third portion 154. In this case, the engaging portion 151 and the engaged portion 65 are in a non-contact state. As a result, no force is applied to the engaging portion 151 from the engaged portion 65, and thus, peeling from the mirror portion 50 can be suppressed.

[0100] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 151 engages with the engaged portion 65 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the falling prevention portion 150 moves together with the mirror portion 50 and comes into contact with the engaged portion 65. As a result, the mirror portion 50 is supported by the engaged portion 65, and further movement of the mirror portion 50 is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0101] As shown in Figure 20, the engaging portion 151 is located on the second portion 153 or the third portion 154, and point C1, which is located above point A1, has the maximum dimension from point A1, and is closest to the back plate portion 40, is located on the curved portion 153b. In this case, the engaging portion 151 has a dimension L1 ≥ dimension d1. Therefore, each member is set to satisfy the above-described equations (1) and (2).

[0102] As a result, as shown in Figure 21, when the engaging portion 151 begins to detach from the mirror portion 50, the engaging portion 151 comes into contact with the inner portion 41a of the backing plate portion 40, and its movement is suppressed. In this state, the horizontal force acting on the second adhesive portion 63 is suppressed, out of the two forces acting on the second adhesive portion 63. Therefore, by suppressing the resultant force generated on the engaging portion 151, it is possible to prevent the engaging portion 151 from detaching.

[0103] Next, an eighth embodiment of the present invention will be described with reference to Figures 22 and 23. In the eighth embodiment, the second portion of the engaging part is formed in a curved shape. Figure 22 is an explanatory diagram similar to Figure 6, showing the fall suppression unit according to the eighth embodiment. Figure 23 is an explanatory diagram similar to Figure 7, showing the case where the engaging portion has detached from the mirror portion.

[0104] The fall prevention section 160 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 160 has an engaging section 161 and an engaged section 65. The engaged section 65 can have any shape or configuration as long as it can engage with the engaging section 161 when the mirror section 50 moves relative to the back plate section 40.

[0105] The engaging portion 161 is provided in place of the engaging portion 61 of the first embodiment. The engaging portion 161 has a first portion 162 bonded to the second adhesive portion 63, a second portion 163 extending from the first portion 162 toward the backing plate portion 40, and a third portion 164 extending downward from the second portion 163. As shown in Figure 22, the second portion 163 is formed in a curved shape that protrudes upward.

[0106] As shown in Figure 22, when the mirror portion 50 is attached to the back plate portion 40, the engaged portion 65 is located within the engaging portion 161. That is, the engaged portion 65 is located below the second portion 163 of the engaging portion 161 and in front of the third portion 164. In this case, the engaging portion 161 and the engaged portion 65 are in a non-contact state. As a result, no force is applied to the engaging portion 161 from the engaged portion 65, thus preventing it from peeling off the mirror portion 50.

[0107] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 161 engages with the engaged portion 65 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the falling prevention portion 160 moves together with the mirror portion 50 and comes into contact with the engaged portion 65. As a result, the mirror portion 50 is supported by the engaged portion 65, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0108] As shown in Figure 22, the engaging portion 161 is located on the second portion 163 or the third portion 164, and point C1, which is located above point A1, has the maximum dimension from point A1, and is closest to the back plate portion 40, is located on the second portion 163. In this case, the engaging portion 161 has a dimension L1 ≥ dimension d1. Therefore, each member is set to satisfy the above-described equations (1) and (2).

[0109] As a result, as shown in Figure 23, when the engaging portion 161 begins to detach from the mirror portion 50, the engaging portion 161 comes into contact with the inner portion 41a of the backing plate portion 40, and its movement is suppressed. In this state, the horizontal force acting on the second adhesive portion 63 is suppressed, out of the two forces acting on the second adhesive portion 63. Therefore, by suppressing the resultant force generated on the engaging portion 161, it is possible to prevent the engaging portion 161 from detaching.

[0110] Next, a ninth embodiment of the present invention will be described with reference to Figures 24 and 25. In the ninth embodiment, the engaging portion is formed in a crank shape. Figure 24 is an explanatory diagram similar to Figure 6, showing the fall suppression unit according to the ninth embodiment. Figure 25 is an explanatory diagram similar to Figure 7, showing the case where the engaging portion has detached from the mirror portion.

[0111] The fall prevention section 170 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 170 has an engaging section 171 and an engaged section 65. The engaged section 65 can have any shape or configuration as long as it can engage with the engaging section 171 when the mirror section 50 moves relative to the back plate section 40.

[0112] The engaging portion 171 is provided in place of the engaging portion 61 of the first embodiment. The engaging portion 171 has a first portion 172 bonded to the second adhesive portion 63, a second portion 173 extending from the first portion 172 toward the backing plate portion 40, and a third portion 174 extending downward from the second portion 173. As shown in Figure 24, the second portion 173 extends horizontally from the lower end of the first portion 172 toward the backing plate portion 40. As a result, the engaging portion 171 is formed in a crank shape by the first to third portions 172 to 174.

[0113] As shown in Figure 24, when the mirror portion 50 is attached to the back plate portion 40, the engaged portion 65 is located within the engaging portion 171. That is, the engaged portion 65 is located below the second portion 173 of the engaging portion 171 and in front of the third portion 174. In this case, the engaging portion 171 and the engaged portion 65 are in a non-contact state. As a result, no force is applied to the engaging portion 171 from the engaged portion 65, and thus, peeling from the mirror portion 50 can be suppressed.

[0114] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 171 engages with the engaged portion 65 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the falling prevention portion 170 moves together with the mirror portion 50 and comes into contact with the engaged portion 65. As a result, the mirror portion 50 is supported by the engaged portion 65, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0115] As shown in Figure 24, the engaging portion 171 is located on the second portion 173 or the third portion 174, and point C1, which is located above point A1, has the maximum dimension from point A1, and is closest to the back plate portion 40, is located on the second portion 173. In this case, the engaging portion 171 has a dimension L1 ≥ dimension d1. Therefore, each member is set to satisfy the above-described equations (1) and (2).

[0116] As a result, as shown in Figure 25, when the engaging portion 171 begins to detach from the mirror portion 50, the engaging portion 171 comes into contact with the inner portion 41a of the backing plate portion 40, and its movement is suppressed. In this state, the horizontal force acting on the second adhesive portion 63 is suppressed, out of the two forces acting on the second adhesive portion 63. Therefore, by suppressing the resultant force generated on the engaging portion 171, it is possible to prevent the engaging portion 171 from detaching.

[0117] Next, a tenth embodiment of the present invention will be described with reference to Figure 26. In the tenth embodiment, the second portion 173 of the engaging portion 171 of the ninth embodiment has a curved portion. Figure 26 is an explanatory diagram similar to Figure 6, showing a fall suppression unit according to the 10th embodiment.

[0118] The fall prevention section 180 is provided between the back plate section 40 and the mirror section 50. The fall prevention section 180 has an engaging section 181 and an engaged section 65. The engaged section 65 can have any shape or configuration as long as it can engage with the engaging section 181 when the mirror section 50 moves relative to the back plate section 40.

[0119] The engaging portion 181 is provided in place of the engaging portion 61 of the first embodiment. The engaging portion 181 has a first portion 182 bonded to the second adhesive portion 63, a second portion 183 extending from the first portion 182 toward the backing plate portion 40, and a third portion 184 extending downward from the second portion 183. As shown in Figure 26, the second portion 183 has a horizontal portion 183a extending horizontally from the lower end of the first portion 182 toward the backing plate portion 40, and a curved portion 183b connecting the horizontal portion 183a and the third portion 184. The curved portion 183b is formed in a curved shape that protrudes outward. As a result, the engaging portion 181 is formed in a crank shape by the first to third portions 182 to 184.

[0120] As shown in Figure 26, when the mirror portion 50 is attached to the back plate portion 40, the engaged portion 65 is located within the engaging portion 181. That is, the engaged portion 65 is located below the second portion 183 of the engaging portion 181 and in front of the third portion 184. In this case, the engaging portion 181 and the engaged portion 65 are in a non-contact state. As a result, no force is applied to the engaging portion 181 from the engaged portion 65, and thus, peeling from the mirror portion 50 can be suppressed.

[0121] When the mirror portion 50 moves downward relative to the back plate portion 40, the engaging portion 181 engages with the engaged portion 65 inside the frame portion 41b (space S2). In other words, when the mirror portion 50 moves relative to the back plate portion 40, the fall suppression portion 180 moves together with the mirror portion 50 and comes into contact with the engaged portion 65. As a result, the mirror portion 50 is supported by the engaged portion 65, and further movement is restricted. Therefore, the mirror portion 50 is prevented from falling from the back plate portion 40.

[0122] As shown in Figure 26, the engaging portion 181 is located on the second portion 183 or the third portion 184, and point C1, which is located above point A1, has the maximum dimension from point A1, and is closest to the back plate portion 40, is located on the curved portion 183b. In this case, the engaging portion 181 has a dimension L1 < dimension d1. Therefore, each member is set to satisfy the above-described formula (3).

[0123] As shown in Figure 26, when dimension L1 < dimension d1, the dimension D1 between the mirror portion 50 and the back plate portion 40 is made the same as the dimension d1 which is the depth dimension (front-to-back dimension) from the back surface 50b of the mirror portion 50 to the rear end of the engaging portion 181 (D1 = d1). That is, the third portion 184 of the engaging portion 181 is brought into contact with the inner portion 41a of the back plate portion 40. In other words, the engaging portion 181 is sandwiched between the back plate portion 40 and the mirror portion 50. Note that the force acting from the back plate portion 40 on the third portion 184 of the engaging portion 181 is kept as small as possible. That is, the back plate portion 40 is not actively pressing against the engaging portion 181.

[0124] By bringing the third portion 184 into contact with the inner portion 41a of the backing plate portion 40, a static frictional force is generated between the third portion 184 and the inner portion 41a. This static frictional force reduces the force that causes the engaging portion 181 to move downward. Therefore, it is possible to suppress the engaging portion 181 from peeling off from the mirror portion 50.

[0125] In the embodiments described above, the case in which the mirror unit 30 constitutes the front part of the shelf 20 was used as an example. However, the embodiments of the present invention are not limited to this, and for example, the mirror unit 30 may be directly attached to the wall of a room or the like.

[0126] The embodiment may include the following configurations.

[0127] (Composition 1) The back panel and, The first adhesive portion is bonded to the surface of the backing plate portion, The mirror portion is bonded to the first adhesive portion facing the back plate portion, In a mirror unit equipped with, A mirror unit characterized by having a fall suppression part provided between the back plate and the mirror part, which supports the mirror part when the mirror part moves downward relative to the back plate. (Configuration 2) The mirror unit according to configuration 1, characterized in that a part of the fall suppression part is bonded to the mirror part by a second adhesive part. (Composition 3) The aforementioned fall suppression unit is An engaging portion provided on the back surface of the mirror portion, A portion provided on the surface of the back plate portion, which engages with the engaging portion when the mirror portion moves downward relative to the back plate portion, A mirror unit according to configuration 1 or 2, characterized by having the following features. (Composition 4) The surface of the backing plate portion is The inner part, A frame portion that protrudes forward from the aforementioned inner portion and surrounds the periphery of the aforementioned inner portion, It has, The mirror unit according to configuration 3, characterized in that when the mirror portion moves downward relative to the back plate portion, the engaging portion engages with the engaged portion inside the frame portion. (Composition 5) The aforementioned engaging portion is The first portion bonded to the second adhesive portion, A second portion extending from the first portion toward the back plate portion, A third portion extending downward from the second portion, It has, In a cross-sectional view, The lower end of the first part is at point A1, The upper end of the first part is point B1, Point C1 is located on the second or third portion, above point A1, with the maximum distance from point A1, and closest to the back plate portion. The dimension h1 of the line segment connecting point A1 and point B1, The dimension L1 of the line segment connecting point A1 and point C1, The angle α1 formed by line segment A1B1 and line segment A1C1, The thickness dimension t1 of the second adhesive portion, The tolerance coefficient K1 of the second adhesive portion, The dimension D1 between the mirror portion and the back plate portion, The dimension d1 from the back surface of the mirror portion to the rear end of the engaging portion, In that case, When dimension L1 ≥ dimension d1, the following equations (1) and (2) are satisfied, The mirror unit according to configuration 3 or 4, characterized in that when dimension L1 < dimension d1, it satisfies the following formula (3). d1≦D1≦L1sin(α1+β1)…(1) β1 = arcsin(K1 × t1 / h1) ... (2) D1 = d1 ... (3) (Composition 6) The engaged portion is, The first portion is bonded to the backing plate portion by the third adhesive portion, A second portion extending from the first portion toward the mirror portion, A third portion extending upward from the second portion, It has, In a cross-sectional view, The lower end of the first part is at point A2, The upper end of the first part is point B2, Point C2 is located on the second or third portion, above point A2, with the maximum distance from point A2 and closest to the mirror portion. The dimension h2 of the line segment connecting point A2 and point B2, The dimension L2 of the line segment connecting point A2 and point C2, The angle α2 formed by line segment A2B2 and line segment A2C2, The thickness dimension t2 of the third adhesive part, The tolerance coefficient K2 of the third adhesive portion, The dimension D2 between the mirror portion and the back plate portion, The dimension d2 from the back plate portion to the front end of the engaged portion, In that case, A mirror unit according to any one of configurations 3 to 5, characterized in that it satisfies the following equations (4) and (5). d2≦D2≦L2sin(α2+β2)…(4) β2 = arcsin(K2 × t2 / h2) ... (5) (Composition 7) The mirror unit according to any one of configurations 1 to 6, characterized in that the fall suppression part is provided above 50% of the length of the mirror part in the height direction.

[0128] Embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. Modifications made by those skilled in the art to the above-described embodiments are also included within the scope of the present invention, as long as they retain the features of the present invention. For example, the shape, dimensions, material, and arrangement of each element of the mirror unit are not limited to those exemplified and can be modified as appropriate. Furthermore, the elements of each of the above-described embodiments can be combined to the extent technically feasible, and combinations thereof are also included within the scope of the present invention, as long as they retain the features of the present invention. [Explanation of symbols]

[0129] 10 cabinets 20 Shelf 21 Board part 23 Hinge 30 Mirror Units 40 Back panel 41 Surface 41a Inside part 41b Frame 41b1 Upper part 41b2 Lower part 41b3 Left 41b4 Right side 41c First connection 41d Second connection section 41e Third connection section 41f Fourth Connection Section 42 Back side 43 Hole 47 1st adhesive part 50 Mirror part 50a surface 50b back side 52-sided heater 60 Fall suppression part 61 Engaging part 61a Part 1 61b Part 2 61c 3rd part 63 2nd adhesive part 65 Engaged portion 70 Fall suppression part 71 Engaged portion 71a Part 1 71b Part 2 71c Part 3 73 3rd adhesive part 80 Fall suppression part 81 Engaging part 81a First part 81b Part 2 81c Part 3 83 Engaged portion 83a Part 1 83b Part 2 90 Fall suppression part 91 First mounting section 93 Second mounting section 95 String-like member 100 Fall suppression part 110 Main body 115 Other mirror parts 120 Upper Frame 125 Lower frame 130 Fall suppression part 131 Engaging part 131a Part 1 131b Part 2 131c Part 3 135 Engaged portion 135a Part 1 135b Part 2 135c Part 3 150 Fall suppression part 151 Engaging part 152 Part 1 153 Part 2 153a Horizontal part 153b Curved section 154 Part 3 160 Fall suppression part 161 Engaging part 162 Part 1 163 Part 2 164 Part 3 170 Fall suppression part 171 Engaging part 172 Part 1 173 Part 2 174 Part 3 180 Fall suppression part 181 Engaging part 182 Part 1 183 Part 2 183a Horizontal part 183b Curved section 184 Part 3 S1 Storage Space S2 space

Claims

1. A bathroom mirror unit that is installed in a cabinet of a bathroom vanity so as to be able to be opened and closed, The mirror section is operated by the user to open and close, A back plate portion is positioned opposite the back surface of the mirror portion and serves as the base material for the cabinet door, A first adhesive portion that adheres the surface of the back plate portion and the back surface of the mirror portion, A fall suppression part is provided between the back plate portion and the mirror portion, and supports the mirror portion when the mirror portion moves downward relative to the back plate portion, It has, The aforementioned fall suppression unit is An engaging portion is provided on the back surface of the mirror portion via a second adhesive portion, The engaging portion provided on the surface of the backing plate portion, It has, The aforementioned engaging portion is The first portion bonded to the second adhesive portion, A second portion extending from the first portion toward the back plate portion, A third portion extending downward from the second portion, It has, In a cross-sectional view, A bathroom mirror unit characterized in that, when the lower end of the first portion is point A1, and point C1 is located on the second portion or the third portion, above point A1, with the maximum distance from point A1 and closest to the back plate portion, when the engaging portion is displaced in a direction in which the second adhesive portion peels away from the mirror portion, point C1 contacts the surface of the back plate portion in the stage before engaging with the engaged portion, thereby suppressing the horizontal force acting on the second adhesive portion and reducing the separation of the engaging portion from the mirror portion.

2. The second part is, A horizontal portion extending horizontally from the first portion toward the back plate portion, A curved portion that connects the horizontal portion and the third portion and protrudes outward, It has, The bathroom mirror unit according to claim 1, characterized in that point C1 is located on the curved portion.

3. The bathroom mirror unit according to claim 1, characterized in that the engaging portion is formed in a crank shape having the second portion extending horizontally from the lower end of the first portion toward the back plate portion.

4. In cross-sectional view, the engaging portion is The upper end of the first part is point B1, The dimension h1 of the line segment connecting point A1 and point B1, The dimension L1 of the line segment connecting point A1 and point C1, The angle α1 formed by line segment A1B1 and line segment A1C1, The thickness dimension t1 of the second adhesive portion, The allowable coefficient K1 of the second adhesive portion, The dimension D1 between the mirror portion and the back plate portion, The dimension d1 from the back surface of the mirror portion to the rear end of the engaging portion, In that case, When dimension L1 ≥ dimension d1, the following equations (1) and (2) are satisfied, The bathroom mirror unit according to claim 1, characterized in that when dimension L1 < dimension d1, the following formula (3) is satisfied. d1≦D1≦L1sin(α1+β1)…(1) β1=arcsin(K1×t1 / h1)…(2) D1 = d1 ... (3)

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