JP6198487B2 - Toilet seat and portable toilet equipped with the toilet seat - Google Patents

Description

  The present invention relates to a toilet seat used on a portable toilet (movable portable toilet) and a portable toilet to which the toilet seat is attached. In particular, the toilet seat has a substantially rectangular outer shape, and the toilet seat By curving both sides of the front edge of the toilet seat so that it protrudes backward from the front end of the toilet seat opening, the skin on the back side of the user's thigh is prevented from being caught, and the user's The present invention relates to a toilet seat having a higher degree of freedom of sitting position and a portable toilet to which the toilet seat is attached.

  Used for stationary toilets and portable toilets (movable simple toilets) that are used for excretion in the living room by the elderly and the disabled, so that the user can sit down when using the toilet. A toilet seat is attached. The toilet seat functions to prevent the user's thighs and buttocks from directly touching the opening edge of the toilet and to support the user's thighs and buttocks when the user sits on the toilet. In addition, there are two types of toilet seats: a U-shape with an opening edge open and an O-shape with an opening edge closed. Recently, the toilet seat is attached to the toilet by deformation. The use of O-shaped toilet seats with little breakage is the mainstream.

  By the way, since portable toilets in recent years are generally equipped with armrests and backrests, the flat part of the stool on which the toilet seat is placed is generally rectangular in shape so that it can support the armrests and backrest. It is often done. For this reason, if the outer shape of the toilet seat is made O-shaped in a portable toilet, the O-shaped toilet seat creates a gap or a step along the outer edge of the O-shaped toilet seat with the substantially square flat portion, and the gap or step Is arranged so as to cross the back side of the thigh of the seated user in an oblique direction. For this reason, in a portable toilet with an O-shaped toilet seat, if the user moves the leg after sitting on the toilet seat, the skin on the back of the thigh is placed between the toilet seat and the flat surface of the toilet body. There was a problem of being injured by being caught in the gaps and steps created.

  Therefore, in recent years, it is disclosed in Japanese Patent Application Laid-Open No. 2005-0003287 (Patent Document 1), Japanese Patent Application Laid-Open No. 2010-240165 (Patent Document 2), and Japanese Patent Application Laid-Open No. 2012-152256 (Patent Document 3). As shown in the figure, a toilet seat has been developed that has a generally rectangular outer shape so that the gap between the toilet seat and the flat surface of the toilet body does not cross the back side of the thigh of the user who is seated diagonally. Has been. That is, if the outer shape of the toilet seat is substantially rectangular, a gap or a step formed between the toilet seat and the flat surface portion of the toilet body can be formed outside the thigh of the user who is seated.

  However, the substantially square toilet seat as described above has both ends of the front edge of the toilet seat protruding forward as compared to the O-shaped toilet seat. Therefore, when the user tries to sit on the back of the toilet seat, the back side of the knee However, it hits the front edge of the toilet seat relatively on the front side, making it difficult to sit down.

  Also, in a portable toilet, the front edge of the toilet seat generally coincides with the front end of the toilet body, and armrest posts are attached near both ends of the front end of the toilet body. For this reason, when both ends of the front edge of the toilet seat are moved backward to the rear of the toilet body so that the back side of the user's knee does not hit the front edge of the toilet seat relatively on the front side, the toilet body Since both ends of the front end portion of the unit are also retracted to the rear of the toilet body, there is a problem in that there is no space for mounting the armrest support on the flat portion of the portable toilet.

  Furthermore, the portable toilet provided with an armrest and a backrest is further provided with an armrest and a support for supporting the armrest outside the seat. Since the toilet seat is pivotably attached to the toilet body, there is a design restriction that the toilet seat must be shaped so that it does not interfere with the armrests and the struts that support the armrests.

JP-A-2005-000387 JP 2010-240165 A JP 2012-152256 A

  Accordingly, the present invention provides a toilet seat that is used by being mounted on a portable toilet (movable simple toilet) having a substantially rectangular outer shape in order to prevent the skin on the back side of the user's thigh from being caught. It is an object of the present invention to provide a toilet seat that does not interfere with the armrests of the toilet body and the support that supports the armrest when the toilet seat rotates, and that allows the user to sit back deeply.

  In addition, the present invention secures a space for attaching an armrest post to a plane portion of a portable toilet, and further prevents free movement of a user's leg on which the front edge of the toilet seat and the front end of the toilet body are seated. It aims to provide a portable toilet with no toilet seat and the toilet seat attached.

  Furthermore, the present invention provides a portable toilet equipped with the toilet seat as described above, by ensuring the necessary strength and eliminating protrusions such as ribs and steps from the surface of the toilet body, thereby providing a characteristic on the toilet seat and An object of the present invention is to provide a portable toilet that can make the best use of the effect, and as a result, allows a user to stand up and sit on the portable toilet with less movement.

  As a result of intensive studies on the shape and arrangement of toilet seats attached to portable toilets equipped with armrests and backrests, the present inventors have made the basic shape of the toilet seat substantially rectangular, and the toilet seats on both sides of the front edge of the toilet seat The back of the user's thigh is prevented from being caught by curving and retracting so that it protrudes backward from the tip of the opening of the mouth, and the user sits deeply behind the toilet seat. It was possible to hang it and the present invention was completed.

  Specifically, according to the present invention, the toilet seat is used by being placed on a portable toilet, and the opening is closed and the outside of the toilet seat is positioned behind the front end of the opening. A first side edge extending substantially linearly from the first end portion to the rear portion of the toilet seat, and a first side edge opposite to the first side edge and outside the toilet seat and positioned rearward of the front end portion of the opening. A second side edge extending substantially linearly from the end of the second seat to the rear of the toilet seat, and a projecting portion located in front of the tip of the opening to the second end And has a first inflection point between the first end and the protrusion, and a second inflection point from the second end to the protrusion. There is provided a toilet seat with a leading edge including a curved portion.

  Further, according to the present invention, the toilet seat is used by being placed on a portable toilet, and is positioned behind the front end of the opening on the outside of the toilet seat and the egg-shaped opening having a closed periphery. The first side edge extending from the first end portion to the rear portion of the toilet seat, and the width of the toilet seat cross section in a cross section perpendicular to the tangent to the first side edge is continuously increased from the rear portion of the toilet seat toward the front portion. And a second side located opposite the first side edge and outside the toilet seat, behind the front end of the opening. The second side edge extending from the end of the toilet seat to the rear part of the toilet seat, the width of the toilet seat cross section in a cross section orthogonal to the tangent to the second side edge is continuously reduced from the rear part of the toilet seat toward the front part , And then a second side edge arranged to expand continuously, and the tip of the opening Extends from the first end to the second end via a protrusion located forward of the part, and has a first inflection point between the first end and the protrusion, A toilet seat is provided having a leading edge including a curved portion having a second inflection point between the second end and the protrusion.

  Here, the portable toilet in the present invention means a portable toilet as described in Patent Documents 1 to 3, which is used for excretion of elderly people and physically disabled people in a room or the like. In addition to the portable toilets that are mainly made of resin materials, the concept of portable toilets, for example, outer frames and legs other than portable toilets, armrests, backrests, etc., are made of materials such as wood, So-called furniture-like portable toilets are also included.

  In the present invention, "front part" means an area near the front of a toilet seat and a portable toilet placed on the user's ventral side when an adult user sits on the toilet seat, and "rear part" When an adult user is seated on the toilet seat, it means an area in the vicinity of the back of the toilet seat and portable toilet placed on the back side of the user. Further, the “end portion” of the side edge of the toilet seat means a corner portion where the side edge extending in the longitudinal direction of the toilet seat substantially changes its direction to the front edge extending in the width direction of the toilet seat, and the corner portion. May be a corner with an R as well as a corner.

  The toilet seat of the present invention is not a general stationary Western-style toilet, but is particularly suitable for being placed on a portable toilet.

  This is because, in the portable toilet, when both ends of the front edge of the substantially rectangular toilet seat are retracted to the rear of the toilet body, both ends of the front end of the toilet body are also retracted to the rear of the toilet body. This is because one of the purposes is to solve the problem that there is no space for mounting the armrest support in the plane portion of the portable toilet. Further, in the portable toilet in which the armrest and the support for supporting the armrest are arranged outside the toilet seat, the toilet seat may have a shape that does not interfere with the armrest or the support for supporting the armrest when the toilet seat is rotated. This is because it is one of the important issues to be solved.

  The toilet seat of the present invention is a so-called O-type toilet seat having an opening with a closed periphery. Further, the toilet seat of the present invention has first and second side edges that extend substantially linearly from the end located behind the front end of the opening to the rear of the toilet seat outside the toilet seat. As a whole, it has a substantially square shape. In the present invention, the “edge” means the contour of the toilet seat that appears in a plan view and the end surface that forms the contour. Further, “substantially straight” means a line segment connecting two separated points with a substantially shortest distance. If the distance is substantially the same as a straight line, not only a straight line with a strict meaning but also a little “ Curved lines that are bent in the shape of "" and curved lines that are slightly bent to draw large arcs are also included.

  As described above, the toilet seat according to the present invention includes the first and second side edges that extend substantially linearly from the front end of the opening to the rear of the toilet seat and are substantially parallel to each other outside the toilet seat. It has a substantially rectangular outer shape, and has an inner edge that defines an O-shaped or egg-shaped opening inside the toilet seat. For this reason, the width of the toilet seat cross section in the cross section orthogonal to the tangent of the first side edge and the width of the toilet seat cross section in the cross section orthogonal to the tangent of the second side edge are both from the rear part of the toilet seat toward the front part. It continuously shrinks and then continuously grows.

  Since the outer shape of the toilet seat according to the present invention is substantially rectangular as described above, the seat surface of the toilet seat can be made necessary and sufficient, and the armrests and the struts that support the armrests can be attached to the first and second toilet seats. Even if the toilet seat is arranged adjacent to the outside of the side edge, the toilet seat does not interfere with the armrests or the support columns that support the armrests when the toilet seat is rotated.

  If the first side edge and the second side edge of the toilet seat are arranged, for example, in a “C” shape, and the seat surface of the toilet seat is made necessary and sufficient, the portion where the width of the toilet seat is maximum is It will interfere with the armrest and the support that supports the armrest. Conversely, if the part where the width of the toilet seat is maximized is a size that does not interfere with the armrests and the struts that support the armrests, the maximum distance between the left and right armrests is determined, so the outer width of the toilet seat is relatively small, As a result, the seat surface of the toilet seat cannot be made necessary and sufficient.

  Furthermore, in the present invention, since the outer shape of the toilet seat is substantially rectangular, a gap or a step formed between the toilet seat and the flat surface portion of the toilet body can be formed outside the thigh of the user who is seated. . For this reason, in the present invention, it is possible to eliminate the crossing of the back side of the user's thigh where the gap or step formed between the toilet seat and the flat portion of the toilet body is seated in an oblique direction. It is possible to solve the problem that the skin on the back side of the person's thigh is caught in a gap or a step formed between the toilet seat and the flat surface of the toilet body.

  The toilet seat of this invention has the protrusion part located ahead from the front-end | tip part of an opening part contrary to the edge part of a side edge. The toilet seat according to the present invention has a front edge extending from the first end portion to the second end portion via the protrusion, and the front edge further includes the first end portion and the protrusion portion. A curved portion having a first inflection point in between and a second inflection point from the second end to the protruding portion is included. In the present invention, the “inflection point” is sufficient if it is a portion where the leading edge changes from a convex state toward the rear of the toilet seat to a convex state toward the front of the toilet seat, and the changing portion is a point. This includes not only a certain case but also a case where it is constituted by a straight line.

  As described above, the toilet seat of the present invention is curved and receded so that both end areas of the front edge are convex toward the rear of the toilet seat as compared with the rectangular toilet seat, so that the user sits behind the toilet seat. Even so, the front edge of the toilet seat does not impinge on the back side of the user's knee as compared to a conventional toilet seat in which both end areas of the front edge are not retracted. For this reason, the user can easily sit deeply behind the toilet seat of the present invention.

  In the toilet seat of the present invention, the central portion of the front edge protrudes relatively forward from the both end areas of the front edge. Therefore, when the user sits deeply behind the toilet seat, the protrusion of the front edge is It abuts inside the user's knees and guides the user's legs to open. This makes it possible for the user to take a posture that allows for easy excretion, and in particular, in the case of male users, the genitals can be easily directed downwards, so that the user's urination is protruding from the leading edge. It is possible to prevent scattering beyond the part.

  Further, the posture in which the user opens both legs allows the user to wipe the stool from the front by himself / herself without taking the middle / lower back posture after excretion. In addition, even if the user is an elderly person or care recipient who must be wiped by an attendant or caregiver, the attendant may wipe the user's defecation without holding the user. As a result, the burden on the attendant and the like can be greatly reduced.

  Further, in the present invention, the curved portion of the leading edge includes a first curved portion that curves convexly toward the rear of the toilet seat between the first end portion and the first inflection point, and a second end portion, A second curved portion curved convexly toward the rear of the toilet seat between the second inflection points, and convex toward the front of the toilet seat between the first and second inflection points And a third curved portion that is curved.

  As described above, when the curved portion of both end areas of the front edge is convexly curved toward the back of the toilet seat, and the curved portion of the central portion of the front edge is convexly curved toward the front of the toilet seat When the user sits deeply behind the toilet seat, the shape of both end areas of the front edge fits the back side of the user's knee, so that both legs of the user are gently and smoothly opened. . Furthermore, the shape of the above-mentioned front edge is convenient as a mark of the position where the user puts his / her leg when sitting on the toilet seat.

  In particular, if the seat surface formed along the front edge of the toilet seat is provided with a top portion that protrudes upward in the vicinity of the protrusion portion of the front edge, the protrusion portion of the front edge and the top portion of the seat surface in the vicinity of the protrusion portion are synergistic. In addition, since the user's leg opening induction effect is enhanced, both legs of the user can be opened more smoothly and reliably. For this reason, compared with the case where only the protruding part is formed on the front edge, the user can take a posture that allows for easier and more excretion, and the user's urination becomes the protruding part of the front edge. It is even more reliably prevented from flying over the distance.

  Also, the seat surface of the toilet seat of the present invention is provided with a first concave portion that is recessed downward in the vicinity of the first curved portion of the front edge, and downward in the vicinity of the second curved portion of the front edge. It is preferable to dispose a recessed second recess. That is, on both sides of the top of the seat surface formed along the front edge of the toilet seat, the first and second recesses recessed downward are the seat surface provided in the vicinity of the front edge protrusion and the protrusion. The top of the leg further improves the fit of the user's legs with open legs and prevents the user's legs from being excessively open, making it easier for the user to urinate and defecate. It will be possible to take a posture close to the ideal form.

  Further, when the portable toilet to which the toilet seat is attached includes an armrest and a support column that supports the armrest from below, it is preferable that the first end portion and the second end portion of the toilet seat are disposed in front of the armrest support column. .

  If the first and second ends of the toilet seat are placed in front of the armrest struts, the front of the toilet body will be shaped in the toilet seat after securing the space for attaching the armrest struts in the toilet body. The shape can be substantially the same as the leading edge. For this reason, the user seated on the toilet seat can move his / her legs freely, particularly toward the outside.

  The toilet seat of the present invention is a first seat surface that appears substantially linearly in a cross section perpendicular to the tangent to the first side edge, and is a first seat surface that is inclined downward toward the opening with respect to the horizontal plane. The first seating surface formed so as to continuously increase as the inclination angle moves from the rear part to the front part of the toilet seat and then continuously decreases to become substantially horizontal, and the second side edge As the second seating surface appears in a substantially straight line in a cross section orthogonal to the tangent line, and the second seating surface tilts downward toward the opening with respect to the horizontal plane, the inclination angle of the second seating surface increases from the rear part toward the front part. Preferably, the second seating surface is formed so as to increase continuously and then decrease continuously to become substantially horizontal.

  That is, the toilet seat of the present invention has a first seat surface and a second seat surface across the opening, and both the first and second seat surfaces are inclined from the rear portion to the front portion. As it heads toward, it becomes tighter continuously towards the opening, then becomes gradual and then becomes substantially horizontal near the front edge of the toilet seat. Here, the “inclination angle” of the seating surface means an angle with respect to a horizontal plane of a line segment that shows a typical gradient of the seating surface that appears substantially linearly in a cross section orthogonal to the tangent of the side edge.

  Therefore, the first and second seating surfaces guide the user's buttocks to drop into the opening of the toilet seat when the user is seated on the toilet seat. As a result, the first and second seating surfaces raise the skin of the user's buttocks relative to the seating surface and open the user's anus, so that the user can easily excrete. It should be noted that the seat surface that appears substantially linearly in the cross section of the toilet seat does not necessarily need to be composed only of a plane in which the cross section of the toilet seat appears in a straight line, as long as the above-described drop effect is obtained by the inclination of the seat surface. For example, a curved surface slightly depressed downward or a curved surface bulging upward may be included.

  In addition, the inclination angle of the first seating surface is maximized in a toilet seat cross section passing through a dimension line that is orthogonal to the tangent line of the first side edge and has the maximum width of the opening, and the inclination of the second seating surface. The angle is preferably maximized in a toilet seat cross section passing through a dimension line orthogonal to the tangent line of the second side edge and having the maximum width of the opening.

  When the inclination angle of the first seat surface and the inclination angle of the second seat surface are maximized at a position where the width of the opening of the toilet seat is maximized, when the user is seated on the toilet seat of the present invention, Since the user's anus is guided by the first and second seating surfaces near the midpoint of the dimension line where the width of the toilet seat opening is maximum, the user's bowel movement is a bucket installed below the toilet seat. It is possible to drop it into a predetermined position. For this reason, the inclination of the first and second seat surfaces described above prevents the user's defecation from scattering or adhering to the periphery of the bucket, and the user's defecation at a predetermined depth. Since it is surely buried in the water stored inside, it is possible to prevent the generation of off-flavors due to the exposure of feces.

  Normally, if the inclination angle of the first seat surface and the inclination angle of the second seat surface are the maximum near the position where the width of the opening of the toilet seat is maximum, the user's anus is placed on the toilet seat. Since it can be guided near the midpoint of the dimension line where the width of the opening is maximum, the inclination angle of the first seat surface and the inclination angle of the second seat surface are, in a strict sense, the level of the toilet seat opening. It does not have to be the maximum at the position where the width is maximum.

  Next, according to this invention, the portable toilet by this invention with which the toilet seat of this invention mentioned above was attached is provided. In this case, the portable toilet of the present invention can enjoy all the benefits provided by the toilet seat of the present invention described above.

  Furthermore, the portable toilet of the present invention is provided with a toilet main body, and the toilet main body is a box having an upper opening, and is inclined downward from the opening edge of the opening toward the rear. It is preferable to be divided into a box part having a front part and a frame part connected to the opening edge of the box part.

  As a means for improving the strength of the toilet body against deformation, a method of providing folded ribs or reinforcing ribs on the opening edge or side surface of the toilet body, or arranging a panel on each surface of the toilet body, A method of making the portion a so-called box structure is known.

  However, the folding rib on the opening edge is a protrusion that protrudes outward from the toilet body due to its structure. Therefore, if the folding rib is provided on the toilet body, the user can put the leg in the portable toilet or near the portable toilet. It becomes an obstacle to catch a leg when moving. Therefore, in the present invention, by adopting a box structure that is advantageous for eliminating projections such as folded ribs, projections that may cause a user to hook a leg or the like, particularly from the front surface of the toilet body, The step is eliminated and the front surface of the toilet body is smooth.

  In general, if the toilet body portion has a box structure, the moldability and maintainability of the toilet body portion are reduced, so in the present invention, a so-called two-piece structure is adopted, and the toilet body portion is a box portion whose upper portion is opened, The above-mentioned problem is solved by using two parts including a frame connected to the opening edge of the opening by a screw or the like. Therefore, in the present invention, both the box part and the frame part can be formed as an integrally molded product made of resin, and as a result, a low-cost and sturdy portable toilet can be provided.

  In the portable toilet of the present invention, the front part of the box part is inclined from the opening edge of the opening to the lower part of the box part and to the rear, so that the user can place his / her foot directly below the front edge of the toilet seat. Or it becomes possible to draw it to the back. For this reason, in the portable toilet of the present invention, when the user stands up from the portable toilet and / or when sitting on the portable toilet, the weight shift is mainly only in the vertical direction, Easy seating on portable toilets.

  Furthermore, the portable toilet of the present invention preferably connects the outer surface of the box portion flush with the outer surface of the frame portion.

  In the portable toilet of the present invention, the shape of the front end portion of the toilet body is substantially the same as the front edge of the toilet seat in order to freely move both legs of the user seated on the toilet seat as described above. For this reason, when the outer surface of the box portion is connected flush with the outer surface of the frame portion, the front surface has a surface shape substantially the same as the shape of the front edge of the toilet seat from the front end portion of the toilet body portion downward to the toilet body portion. The part can be formed.

  As a result, if the outer surface of the box part is flush with the outer surface of the frame part, the protrusions and steps are removed from the front part of the toilet body part, and the front part of the toilet body part can be made a smoother shape. In addition, the protrusion at the center of the front edge of the toilet seat can be continuously formed from the front edge of the toilet seat to the front of the toilet body so that the user can sit deeply behind the toilet seat. In this case, it is possible to more smoothly promote the user to open the legs of both legs.

  Since the toilet seat of the present invention has a substantially rectangular outer shape, when the toilet seat of the present invention is placed and used on a portable toilet (movable simple toilet), the armrest of the toilet body when the toilet seat is rotated And interference with the support that supports the armrest. In addition, the gap formed between the toilet seat and the flat surface of the toilet body is formed outside the thigh of the seated user, so the skin on the back side of the user's thigh is sandwiched between the gap, etc. Is also prevented.

  Since the front edge of the toilet seat of the present invention has both end areas convexly curved toward the back of the toilet seat and the protruding portion (central area) protrudes convex toward the front of the toilet seat, the user can easily You will be able to sit back deeply. Also, when the user sits deeply behind the toilet seat, the protruding part of the front edge contacts the inside of both knees of the user to open both legs of the user, so the user can easily excrete naturally Will be able to take a proper posture. In addition, the posture in which the user has opened both legs allows the user to wipe the defecation from the front without taking a middle waist posture after excretion, and the user is a care recipient etc. Even if it exists, since the attendant etc. can wipe a user's defecation without holding a user, the burden of an attendant etc. can be reduced significantly.

  The seat surface of the toilet seat of the present invention is continuously tightened toward the opening as the seat surface slopes from the rear to the front of the toilet seat, then gradually becomes gentle, and is substantially horizontal near the front edge of the toilet seat. It has the shape which becomes. For this reason, when the user is seated on the toilet seat of the present invention, the user's buttocks are guided to drop into the opening of the toilet seat, and the skin of the user's buttocks is lifted relative to the seat surface. The user's anus is opened, and the user's defecation becomes easier.

  When the toilet seat of the present invention is arranged so that the end of the front edge of the toilet seat is in front of the armrest strut, the space for attaching the armrest strut is secured, and the shape of the front end portion of the toilet body is changed to the front of the toilet seat. Since the shape can be substantially the same as the edge, the user sitting on the toilet seat can freely move his / her legs, particularly outward.

  The portable toilet of the present invention has a so-called box structure for the toilet main body after attaching the toilet seat of the present invention described above, so that the user can use his / her legs and the like from the surface of the toilet main body while ensuring the necessary strength. It is possible to eliminate protrusions and steps such as ribs or the like that may be caught, and to make the surface of the toilet body part a smooth shape. Moreover, since the toilet body part employs a so-called two-piece structure divided into a box part and a frame part, any part can be molded as an integrally molded product made of resin. A sturdy portable toilet can be provided. In addition, it cannot be overemphasized that the portable toilet of this invention can also receive all the profits brought about by the toilet seat of this invention mentioned above.

  Furthermore, the portable toilet of the present invention is configured such that the front surface of the toilet body is inclined from the opening edge of the opening downward and rearward of the box, so that the user can stand up from the portable toilet and / or the portable toilet. When seated in, the user can pull his feet down to just below the front edge of the toilet seat. As a result, when the user stands up and / or sits down, the weight of the user is mainly moved only in the vertical direction, and the user can easily stand up and sit down.

It is a schematic diagram of the portable toilet of this invention to which the toilet seat of this invention of the state with the lid | cover opened was attached. It is a schematic diagram of the portable toilet of this invention with which the toilet seat of this invention of the state with the lid | cover and toilet seat opened was attached. It is an assembly schematic diagram of the portable toilet of the present invention. It is a schematic diagram of the toilet seat of the present invention. It is a top view of the toilet seat of this invention. FIG. 6 is a cross-sectional view and a front view from the AA cross section to the DD cross section of the toilet seat shown in FIG. 5. It is an assembly schematic diagram of the toilet body part of the portable toilet of the present invention. It is a side view of the portable toilet of this invention.

  Hereinafter, a toilet seat according to an embodiment of the present invention and a portable toilet according to an embodiment of the present invention to which the toilet seat is attached will be described in detail with reference to the drawings. The present invention is not limited to the embodiments shown below, and various modifications can be made without departing from the technical idea of the present invention.

  FIG. 1 shows a schematic diagram of a portable toilet 1 to which a toilet seat 4 according to an embodiment of the present invention with the lid 5 opened is attached. FIG. 2 shows the lid 5 and the toilet seat 4. A schematic diagram of a portable toilet 1 to which a toilet seat 4 according to the present embodiment in an opened state is attached is shown. Moreover, the assembly schematic diagram of the portable toilet 1 which concerns on one Embodiment of this invention is shown by FIG. 3, The portable toilet 1 shown by FIG. 1 and 2 is also one Embodiment of this invention.

  As shown in FIG. 3, the portable toilet 1 according to the present embodiment includes a toilet body 2, a receiving portion 3 that constitutes an upper surface of the toilet body 2, a toilet seat 4, a lid 5, and the toilet body 2. The bucket 6 and the auxiliary lid 7 of the bucket 6 are detachably attached to each other. The toilet body 2 includes an armrest 20, a backrest 21 and a leg 22. Moreover, as can be understood by comparing FIGS. 1 and 2, the toilet seat 4 of the present embodiment is rotatably attached to the receiving portion 5 of the toilet body.

  FIG. 4 shows a schematic diagram of the toilet seat 4 of the present embodiment, and FIG. 5 shows a plan view of the toilet seat 4 of the present embodiment.

  As can be understood with reference to FIGS. 4 and 5, the toilet seat 4 of the present embodiment includes a first side edge 43 that extends substantially linearly from the front portion to the rear portion of the toilet seat 4, and a first side edge 43. 2, a second side edge 44 extending substantially linearly from the front part to the rear part of the toilet seat 4, and a front edge 45. The inside of the toilet seat 4 is closed by an inner edge 46. An opening 40 is provided.

  FIG. 6 is a sectional view of the toilet seat 4 shown in FIG. 5 from the AA section to the DD section orthogonal to the first side edge 43 and the second side edge 44, and the toilet seat. A front view of 4 is shown.

  The toilet seat 4 of the present embodiment has a substantially rectangular outer shape with first and second side edges 43 and 44 extending substantially linearly and arranged substantially in parallel outside the toilet seat 4. And has an inner edge 46 defining an egg-shaped opening 40 inside the toilet seat 4 (see FIG. 5). Therefore, in the toilet seat 4 of the present embodiment, as shown in FIG. 6, the width W of the toilet seat cross section in a cross section orthogonal to the tangent line of the first side edge 43 and the tangent line of the second side edge 44 The width W of the toilet seat cross section in the orthogonal cross section is continuously reduced as it goes from the rear part to the front part of the toilet seat 4 and then continuously increases, and continuously as it goes from the rear part to the front part of the toilet seat 4 And then continuously expanding.

  In the present embodiment, the “edge” means the contour of the toilet seat 4 shown in FIG. 5 and the end surface that forms the contour. The “substantially straight line” does not necessarily need to be a complete straight line like the first side edge 43 and the second side edge 44 shown in FIG. Curved lines and curved lines that are slightly bent so as to draw large arcs may be included. Further, the “front part” means an area near the front of the toilet seat 4 and the portable toilet 1 arranged on the abdomen side of the user when an adult user is seated on the toilet seat 4, and “rear part” is When the adult user sits on the toilet seat 4, it means an area in the vicinity of the back of the toilet seat 4 and the portable toilet 1 arranged on the back side of the user. Further, the width W of the toilet seat cross section is defined as a distance between the first side edge 43 and the inner edge 46 of the toilet seat 4 or a distance between the second side edge 44 and the inner edge 46 as shown in FIG. appear.

  Thus, since the toilet seat 4 of this embodiment has a substantially rectangular outer shape and the opening 40 has an oval shape, the seat surfaces 41 and 42 of the toilet seat 4 can be made necessary and sufficient in size. Further, even when the armrest 20 of the portable toilet 1 and the support column 200 that supports the armrest are arranged adjacent to the outside of the first and second side edges 43 and 44 of the toilet seat 4, the toilet seat 4 is not moved when the toilet seat 4 is rotated. It does not interfere with the armrest 20 or the support column 200 that supports the armrest (see FIGS. 1 and 2).

  If the first side edge 43 and the second side edge 44 of the toilet seat 4 are arranged, for example, in a “C” shape and the seat surfaces 41 and 42 of the toilet seat 4 are made necessary and sufficient, the toilet seat 4 The portion having the maximum width interferes with the armrest 20 and the column 200 supporting the armrest. On the other hand, if the portion where the width of the toilet seat 4 is maximized is a size that does not interfere with the armrests 20 and the struts 200 that support the armrests, the allowable maximum distance between the left and right armrests 20 is determined. As a result, the seat surfaces 41 and 42 of the toilet seat 4 cannot be secured in a necessary and sufficient size.

  Furthermore, in the toilet seat 4 of this embodiment, the clearance gap and level | step difference which were made between the side edges 43 and 44 of the toilet seat 4 and the plane part of the toilet body part 2 are formed in the outer side of the thigh part of the seated user. (See FIG. 1). For this reason, in this embodiment, it is possible to eliminate the crossing of the back side of the user's thigh where the gap or step formed between the toilet seat 4 and the flat portion of the toilet body 2 is seated in an oblique direction. The problem that the skin on the back side of the user's thigh is caught in a gap or a step formed between the toilet seat 4 and the flat surface of the toilet body 2 can be solved.

  As shown in FIG. 5, the first side edge 43 of the toilet seat 4 has a first end portion 430 positioned outside the front end portion 400 of the opening 40 on the outside of the toilet seat 4. The second side edge 44 has a second end 440 that is located outside the toilet seat 4 and behind the front end 400 of the opening 40.

  The front edge 45 also has a first end portion 430 and a second end portion 440 that are common to the first side edge 43 and the second side edge 44, and further from the front end portion 440 of the opening 40. It has the protrusion part 450 located ahead. Further, the leading edge 45 has a first inflection point 451 between the first end 430 and the protrusion 450, and the second edge 440 and the protrusion 450 have a second inflection point 451. An inflection point 452 is provided. Therefore, the front edge 45 of the toilet seat 4 extends from the first end 430 to the second end 440 via the protrusion 450 in front of the toilet seat 4.

  In the present embodiment, the “ends” of the side edges 43 and 44 of the toilet seat 4 refer to the side edges 43 and 44 extending in the longitudinal direction of the toilet seat 4 to the front edge 45 extending in the width direction of the toilet seat 4. It means a corner portion that substantially changes its direction, and the corner portion may be not only a corner portion but also a corner portion with an R. Further, the “inflection point” is sufficient if it is a portion where the front edge 45 changes from a convex state toward the rear of the toilet seat 4 to a convex state toward the front of the toilet seat 4, and the changed portion is a point. This includes not only the case but also the case where the line is constituted by a straight line.

  As described above, the toilet seat 4 of the present embodiment is curved and retracted so that both end areas of the front edge 45 are convex toward the rear of the toilet seat 4 as compared to a rectangular toilet seat (see FIG. 5). Even if a person tries to sit behind the toilet seat 4, the front edge 45 of the toilet seat 4 may hit the back side of the user's knee compared to a conventional toilet seat where both end areas of the front edge are not retracted. Absent. For this reason, the user can easily sit deeply behind the toilet seat 4 of the present embodiment.

  Moreover, since the center part of the front edge 45 protrudes relatively forward rather than the both end area of the front edge 45, when the user sits deeply behind the toilet seat 4, the toilet seat 4 of the present embodiment The protrusions 450 of the edge 45 abut on the inner sides of both knees of the user and guide the user's legs to open. For this reason, the user can take a posture that allows for easy excretion, and in particular, in the case of male users, the genitals can be easily directed downward, so that the user's urination can be It is possible to eliminate the scattering beyond the protruding portion 450.

  Further, the posture in which the user opens both legs allows the user to wipe the stool from the front by himself / herself without taking the middle / lower back posture after excretion. In addition, even if the user is an elderly person or care recipient who must be wiped by an attendant or caregiver, the attendant may wipe the user's defecation without holding the user. As a result, the burden on the attendant and the like can be greatly reduced.

  Further, in the present embodiment, the curved portion 453 of the front edge 45 is a first curved portion 454 that is curved convexly toward the rear of the toilet seat 4 between the first end portion 43 and the first inflection point 451. And a second curved portion 455 that is convexly curved toward the rear of the toilet seat 4 between the second end portion 44 and the second inflection point 452, and the first inflection point 451 and the second inflection point 452 A third curved portion 456 that is convexly curved toward the front of the toilet seat 4 between the inflection points 452 is included (see FIGS. 4 and 5).

  As described above, the curved portions 453 in the both end areas of the front edge 45 are convexly curved toward the rear of the toilet seat 4, and the curved portion 453 of the central portion of the front edge 45 is convex toward the front of the toilet seat 4. When the user sits deeply behind the toilet seat 4, the shape of both end areas of the front edge 45 fits on the back side of the user's knee, so that both legs of the user are gentle and smooth. Invite them to open their legs. Further, the shape of the front edge 45 described above is convenient as a mark for placing the user's own leg when the user sits on the toilet seat 4.

  As is understood with reference to FIG. 6 (e), the toilet seat 4 of the present embodiment is positioned above the seat surface 47 formed along the front edge 45 of the toilet seat 4 in the vicinity of the protrusion 450 of the front edge 45. It has a top 470 that protrudes toward the top.

  The projecting portion 450 of the front edge 45 and the top portion 470 of the seating surface 47 provided in the vicinity of the projecting portion 450 synergistically enhance the user's leg opening induction effect, so that both the user's legs can be opened more smoothly and reliably. You can be legged. For this reason, compared with the case where only the protrusion part 450 is formed in the front edge 45, the user can take a posture that facilitates more excretion more naturally, and the user's urination is reduced to the front edge 45. It is even more reliably prevented from scattering beyond the projecting portion 450.

  Further, the seat surface 47 of the toilet seat 4 of the present embodiment is formed with a first recess 471 that is recessed downward in the vicinity of the first curved portion 454 of the front edge 45, and the first In the vicinity of the second curved portion 455, a second concave portion 472 is formed that is recessed downward. That is, on both sides of the top portion 470 of the seat surface 47 formed along the front edge 45 of the toilet seat 4, the first and second recesses 471 and 472 that are recessed downward are the protrusion 450 and the front edge 45. The top portion 470 of the seat surface 47 provided in the vicinity of the protrusion 450 further improves the fit of the legs of the user whose legs are guided and prevents excessive spread of the legs of the user. It becomes possible for the user to take a posture closer to the ideal shape more easily for urination and defecation.

  In addition, as shown in FIG. 1, when the portable toilet 1 to which the toilet seat 4 is attached includes an armrest 20 and a support column 200 that supports the armrest from below, the toilet seat 4 of the present embodiment includes the toilet seat 4. The first end 430 and the second end 440 are attached so as to be disposed in front of the armrest strut 200.

  When the first end 430 and the second end 440 of the toilet seat 4 are arranged in front of the armrest strut 200, a space for attaching the armrest strut 200 is secured in the toilet body 2, and the front end of the toilet body The shape of 27 can be made substantially the same shape as the front edge 45 of the toilet seat 4. For this reason, the user seated on the toilet seat 4 can freely move his / her legs particularly toward the outside.

  The toilet seat 4 of the present embodiment has a first seat surface 41 and a second seat surface 42 with the opening 40 interposed therebetween (see FIGS. 4 and 5). As shown in FIG. 6, the first seating surface 41 that appears in a substantially straight line in the cross section orthogonal to the tangent to the first side edge 43 is inclined downward toward the opening 40 with respect to the horizontal plane. The inclination angle α of the first seating surface 41 is continuously increased from the rear part to the front part of the toilet seat 4 and then continuously decreased to become substantially horizontal. In addition, the second seating surface 42 that appears substantially linearly in a cross section perpendicular to the tangent to the second side edge 44 is inclined at an angle of the second seating surface 42 that tilts downward toward the opening 40 with respect to the horizontal plane. α is formed so as to continuously increase from the rear part to the front part of the toilet seat 4 and then continuously decrease to become substantially horizontal.

  That is, the inclinations of the first and second seat surfaces 41 and 42 are both continuously tightened toward the opening 40 from the rear part to the front part of the toilet seat 4, and then gradually become gentle. 4 is substantially horizontal in the vicinity of the front edge 45. Here, the “inclination angle α” of the seating surfaces 41 and 42 is a line segment indicating a typical gradient of the seating surfaces 41 and 42 that appears substantially linearly in a cross section perpendicular to the tangent to the side edges 43 and 44. It means the angle with respect to the horizontal plane (see FIG. 6).

  Therefore, the first and second seat surfaces 41 and 42 guide the user's buttocks into the opening 40 of the toilet seat 4 when the user is seated on the toilet seat 4. As a result, the first and second seating surfaces 41 and 42 lift the skin of the user's buttocks relative to the seating surfaces 41 and 42 to open the user's anus. The effect of doing. It should be noted that the seat surfaces 41 and 42 appearing substantially linearly in the cross section of the toilet seat 4 are not necessarily limited to planes in which the cross section of the toilet seat 4 appears as a straight line as long as a drop effect can be obtained by the inclination of the seat surfaces 41 and 42. It is not necessary to be configured, and as shown in FIG. 6 (d), it may include a curved surface slightly depressed downward.

  In the toilet seat 4 of the present embodiment, the inclination angle α of the first seating surface 41 is perpendicular to the tangent to the first side edge 43 and the dimension line 401 (FIG. 5) at which the width of the opening 40 is maximum. It is the largest in the cross section of the toilet seat that passes through. Further, the inclination angle α of the second seating surface 42 is maximum in the toilet seat cross section passing through a dimension line 401 (FIG. 5) orthogonal to the tangent line of the second side edge 44 and having the maximum width of the opening 40. It has become.

  When the inclination angle α of the first seat surface 41 and the inclination angle α of the second seat surface 42 are maximized at the position where the width of the opening 40 of the toilet seat 4 is maximized, the user can When seated on the toilet seat 4, the user's anus is guided by the first and second seat surfaces 41, 42 near the midpoint of the dimension line 401 where the width of the opening 40 of the toilet seat 4 is maximum, The user's stool can be dropped to a predetermined position in a bucket 6 installed below the toilet seat 4 (see FIG. 1). Therefore, the inclination of the first and second seat surfaces 41 and 42 prevents the user's defecation from scattering or adhering to the periphery of the bucket 6, and the user's defecation at a predetermined depth. Since it is surely buried in the water stored in the bucket 6, it is possible to prevent the generation of a strange odor due to the exposure of feces.

  If the inclination angle α of the first seat surface 41 and the inclination angle α of the second seat surface 42 are maximum in the vicinity of the position where the width of the opening 40 of the toilet seat 4 is maximum, the user's anus Can be guided in the vicinity of the midpoint of the dimension line 401 where the width of the opening 40 of the toilet seat 4 is maximum, so that the inclination angle α of the first seating surface 41 and the inclination angle α of the second seating surface 42 can be guided. In a strict sense, does not have to be maximized at a position where the width of the opening 40 of the toilet seat 4 is maximized.

  Next, the portable toilet 1 which concerns on one Embodiment of this invention with which the toilet seat 4 of this embodiment mentioned above was attached is demonstrated using FIG. The assembly schematic diagram of the toilet main-body part 2 of the portable toilet 1 of this embodiment is shown by FIG. FIG. 8 shows a side view of the portable toilet 1 of the present embodiment. Moreover, the portable toilet 1 of this embodiment can enjoy all the profits brought about by the toilet seat 4 of this embodiment mentioned above.

  As shown in FIG. 7, the portable toilet 1 of the present embodiment has a toilet body 2 including an armrest 20, a backrest 21, and legs 22. The toilet body 2 is divided into a box part 23 whose upper part is open and a frame part 24 connected to the opening edge 230 of the opening of the box part 23. Further, the box portion 23 has a front surface portion 231 that is inclined from the opening edge 230 of the opening downward and rearward of the box portion 23.

  The portable toilet 1 according to the present embodiment employs a so-called box structure that is advantageous for eliminating projections such as the folded ribs of the opening edge 230 in particular, so that the user can start from the front portion 231 of the toilet body 2 in particular. Protrusions and steps that may catch a leg or the like are eliminated, and the front surface portion 231 of the toilet body 2 is made smooth.

  Moreover, the portable toilet 1 of this embodiment employs a so-called two-piece structure, and the toilet body 2 is connected to a box portion 23 having an upper opening and a frame portion 24 connected to the opening edge 230 of the opening by a screw or the like. It is divided into two parts. Therefore, both the box part 23 and the frame part 24 of the portable toilet 1 of the present embodiment are formed as an integrally molded product made of resin. As a result, the portable toilet 1 of the present embodiment is manufactured at low cost and robustly. Has been.

  Furthermore, as shown in FIG. 8, the portable toilet 1 of the present embodiment has the front surface portion 231 of the box portion 23 inclined from the opening edge 230 of the opening downward and rearward of the box portion 23. Therefore, the user can draw his / her feet down to just below or behind the front edge 45 of the toilet seat 4 (see FIG. 1). For this reason, in the portable toilet 1 of the present embodiment, when the user stands up from the portable toilet 1 and / or sits on the portable toilet 1, the weight movement is mainly only in the vertical direction. It is easy to get up from 1 and sit on the portable toilet 1.

  Moreover, the portable toilet 1 of this embodiment has the outer surface of the box part 23 connected with the outer surface of the frame part 24 (refer FIG. 1, 2).

  In the portable toilet 1 of the present embodiment, the shape of the front end portion 27 of the toilet body 2 is substantially the same as the front edge 45 of the toilet seat 4 in order to make the movement of both legs of the user seated on the toilet seat 4 free. (See FIG. 1). For this reason, when the outer surface of the box part 23 is connected flush with the outer surface of the frame part 24, the shape of the front edge 45 of the toilet seat 4 is substantially the same as the shape of the front edge 45 of the toilet seat 4 downward from the front end part 27 of the toilet body part 2. The front part 231 having the same surface shape can be formed.

  As a result, the portable toilet 1 of the present embodiment can eliminate protrusions and steps from the front surface 231 of the toilet body 2 and make the front surface 231 of the toilet body 2 more smooth. Moreover, since the protrusion part 450 of the center part of the front edge 45 of the toilet seat 4 can be hung from the front edge 45 of the toilet seat 4 to the front surface part 231 of the toilet body part 2, it can be formed by the user. It is possible to more smoothly promote the user's leg opening guidance when the user sits deeply behind.

DESCRIPTION OF SYMBOLS 1 ... Portable toilet 2 ... Toilet body part 20 ... Armrest 200 ... Post 21 ... Backrest 22 ... Leg part 23 ... Box part 230 ··· Opening edge 231 · · · Front portion 24 · · · Frame portion 27 ··· Toilet body front end portion 3 · · · Receiving portion 4 · · · Toilet seat 40 · · · Opening portion 400 · · · ···· 401 ··· Dimension line of maximum opening width 41 ··· First seat surface 42 ··· Second seat surface 43 ··· First side edge 430 ··· 1st End 44 of the second side 440 second end 45 of the front edge 450 protrusion 451 first inflection point 452 first 2 inflection points 453 ... curved portion 454 ... first curved portion 455 ... second curved portion 456 ... third curved portion 46 ... inner edge 47 ... .... Seat surface along the front edge 470 ... Top 471 ... First recess 472 ... Second recess 5 ... Lid 6 ... Bucket 7 ...・ Auxiliary lid

Claims (13)

A toilet seat that is placed on a portable toilet and used.
An opening with a closed perimeter;
A first side edge extending substantially linearly from the first end located behind the front end of the opening to the rear of the toilet seat outside the toilet seat;
A second side edge extending substantially linearly from the second end located behind the front end of the opening to the rear of the toilet seat on the opposite side of the first side edge and outside the toilet seat And extending from the first end to the second end via a protrusion located forward of the tip of the opening, and the first end and the protrusion A leading edge including a curved portion having a first inflection point between the portions and having a second inflection point between the second end and the protrusion. In addition,
The seat of the said toilet seat has the top part which protruded upwards in the vicinity of the said protrusion part of the said front edge, The toilet seat characterized by the above-mentioned. A toilet seat that is placed on a portable toilet and used.
An oval opening with a closed periphery;
A first side edge extending from a first end located behind the front end of the opening to the rear of the toilet seat outside the toilet seat and orthogonal to a tangent to the first side edge A first side edge arranged such that the width of the toilet seat cross-section in the cross-section is continuously reduced from the rear to the front of the toilet seat and then continuously enlarged;
A second side edge extending from a second end located on the opposite side of the first side edge and outside the toilet seat to the rear of the front end of the opening to the rear of the toilet seat; A width of the toilet seat cross section in a cross section perpendicular to the tangent to the second side edge is continuously reduced from the rear part toward the front part of the toilet seat and is then continuously extended. Extending from the first end to the second end via a side edge, and a protrusion located forward of the tip of the opening, and the first end A leading edge including a curved portion having a first inflection point between the protrusions and having a second inflection point from the second end to the protrusion. And more
The seat of the said toilet seat has the top part which protruded upwards in the vicinity of the said protrusion part of the said front edge, The toilet seat characterized by the above-mentioned. The toilet seat
A first seating surface that appears in a substantially straight line in a cross section perpendicular to the tangent line of the first side edge, and the tilt angle of the first seating surface tilts downward toward the opening with respect to a horizontal plane. The first seating surface is formed so as to continuously increase from the rear part to the front part of the toilet seat and then continuously decrease to become substantially horizontal, and the second side edge. The second seating surface appears in a substantially straight line in a cross section perpendicular to the tangent line, and the tilt angle of the second seating surface tilted downward toward the opening with respect to the horizontal plane is the rear part of the toilet seat. from continuously increasing toward the front, and is characterized in that it comprises a subsequent continuously reduced the second seating surface formed so as to be substantially horizontally claim 1 or 2 Toilet seat as described in. The inclination angle of the first seating surface is maximized in the section of the toilet seat that passes through a dimension line that is perpendicular to a tangent line of the first side edge and has the maximum width of the opening, and the second seat surface the tilt angle of the seat surface, to claim 3, characterized in that the maximum and in the toilet seat section width of the tangent line perpendicular to and the opening of the second side edge passes the dimension line with the maximum The toilet seat described. The curved portion is
A first curved portion curved convexly toward the rear of the toilet seat between the first end portion and the first inflection point;
A second curved portion curved convexly toward the rear of the toilet seat between the second end portion and the second inflection point; and the first inflection point and the second inflection point. The toilet seat according to any one of claims 1 to 4, further comprising a third curved portion that is convexly curved toward the front of the toilet seat. The seat surface of the toilet seat has a first recess recessed downward in the vicinity of the first curved portion of the front edge, and downward in the vicinity of the second curved portion of the front edge. The toilet seat according to claim 5 , wherein the toilet seat has a second concave portion that is recessed.   The toilet seat according to claim 2, wherein the first side edge and the second side edge both extend substantially linearly. The toilet seat according to claim 1 or 7 , wherein the first side edge is disposed substantially parallel to the second side edge. Portable toilet seat is mounted according to any one of claims 1 to 8. The portable toilet is provided with a toilet body, and the toilet body is
A box having an opening at the top, the box having a front portion inclined downward and rearward from the opening edge of the opening; and the opening of the box The portable toilet according to claim 9 , wherein the portable toilet is divided into a frame portion connected to the edge. The portable toilet according to claim 10 , wherein an outer surface of the box portion is connected flush with an outer surface of the frame portion. The portable toilet according to claim 10 or 11 , wherein each of the box part and the frame part is an integrally molded product made of resin. The portable toilet is provided with an armrest and a support for supporting the armrest from below, and the first end and the second end of the toilet seat are disposed in front of the support of the armrest. portable toilet according to any one of claims 10 to 12, characterized.

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