A seat structure of a mobile toilet

Abstract

The utility model relates to a seat body structure of mobile toilet, including support structure, support structure includes side plate structure, side plate structure includes left column, right column, upper beam, lower beam, side plate, the upper, lower, left, right edge of side plate is located in the first vertical groove of left column, the first vertical groove of right column respectively in upper horizontal groove, lower horizontal groove, the top surface and side of upper horizontal groove form the upper limiting step of the opposite side plate top at upper wedge protruding, the bottom surface and side of lower horizontal groove form the lower limiting step of the opposite side plate bottom at lower wedge protruding. The seat body structure of mobile toilet still includes cover body structure, cover body structure includes seat ring board, cover plate support part, cover plate, and the seat ring board formed by the connection of multiple seat face plates is formed with opening. The large opening in the seat ring board can be adapted to the common mobile closestool barrel in the market, and the small opening on both sides of the large opening is convenient for taking the spittoon by hand. When the cover plate is closed, dust and peculiar smell can be effectively prevented, and the household sanitary requirement is satisfied.

Description

Technical Field

[0001] This utility model relates to the field of portable toilet technology, and in particular to a seat structure for a portable toilet. Background Technology

[0002] In home care needs, portable toilets, as convenient hygiene aids, are widely used in homes, nursing homes, rehabilitation facilities, and other settings. However, the seat structure of some existing portable toilets still has many shortcomings in practical applications. For example, in the support structure, protrusions are usually set on the sides of the legs to facilitate the installation of side panels. During assembly, a large number of screws are used to fix the side panels to the legs. Because the side panels are usually thin, they are prone to breakage when assembled with screws. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a seat structure for a portable toilet.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a seat structure of a portable toilet, including a support structure, the support structure including a side plate structure, the side plate structure including a left column, a right column, an upper beam, a lower beam, and a side plate, the left column and the right column are respectively provided with a transverse upper groove located on one side and a transverse lower groove located on one side, the two ends of the upper beam are respectively provided with upper wedge-shaped protrusions that form a compression and fixation with the transverse upper grooves of the left column and the right column, and the two ends of the lower beam are respectively provided with lower wedge-shaped protrusions that form a compression and fixation with the transverse lower grooves of the left column and the right column; The transverse upper groove and transverse lower groove in the left or right column are connected by the first vertical groove. An upper transverse groove is opened between the upper wedge-shaped protrusions at both ends of the upper beam, and a lower transverse groove is opened between the lower wedge-shaped protrusions at both ends of the lower beam. The upper, lower, left, and right edges of the side plate are respectively located in the upper transverse groove, the lower transverse groove, the first vertical groove of the left column, and the first vertical groove of the right column. The top surface and side surface of the upper transverse groove form an upper limit step at the upper wedge-shaped protrusion to limit the top of the side plate; the bottom surface and side surface of the lower transverse groove form a lower limit step at the lower wedge-shaped protrusion to limit the bottom of the side plate.

[0005] Preferably, the seat structure of the portable toilet includes two side panel structures, which are divided into a front side panel structure and a rear side panel structure. The left and right columns of the front and rear side panel structures are respectively provided with a longitudinal upper groove with an opening on one side and a longitudinal lower groove with an opening on one side. The horizontal upper groove and the horizontal lower groove in the left column are located on its right side, and the vertical upper groove and the vertical lower groove in the left column are located on its rear side. The horizontal upper groove and the horizontal lower groove in the right column are located on its left side, and the vertical upper groove and the vertical lower groove in the right column are located on its rear side. The front and rear side panel structures are connected by a left and right side panel structure, wherein the left and right side panel structures respectively include a second upper beam, a second lower beam, and a second side panel. The second upper wedge-shaped protrusions at both ends of the second upper beam of the left or right side plate structure are respectively squeezed and fixed to the longitudinal upper groove of the left or right column of the front side plate structure and the longitudinal upper groove of the left or right column of the rear side plate structure. The second lower wedge-shaped protrusions at both ends of the second lower beam of the left or right side plate structure are respectively squeezed and fixed to the longitudinal lower groove of the left or right column of the front side plate structure and the longitudinal lower groove of the left or right column of the rear side plate structure.

[0006] Preferably, the longitudinal upper groove in the left or right column is connected to the transverse upper groove, and the longitudinal lower groove in the left or right column is connected to the transverse lower groove.

[0007] Preferably, the longitudinal upper groove and the longitudinal lower groove in the left or right column are connected by the second vertical groove, the second upper longitudinal groove is opened between the second upper wedge protrusions at both ends of the second upper beam, the second lower longitudinal groove is opened between the second lower wedge protrusions at both ends of the second lower beam, and the upper, lower, front and rear edges of the second side plate are respectively located in the second upper longitudinal groove, the second lower longitudinal groove, the second vertical groove of the front side plate structure, and the second vertical groove of the rear side plate structure.

[0008] Preferably, the top surface and side surface of the second upper longitudinal groove form a second upper limit step at the second upper wedge-shaped protrusion to limit the top of the second side plate; the bottom surface and side surface of the second lower longitudinal groove form a second lower limit step at the second lower wedge-shaped protrusion to limit the bottom of the second side plate.

[0009] Preferably, the seat structure of the portable toilet includes a lower longitudinal support plate, the two ends of which are respectively inserted into the support plate slots of the lower beam of the front side panel structure and the support plate slots of the lower beam of the rear side panel structure.

[0010] Preferably, the seat structure of the portable toilet further includes a cover structure, which includes a seat ring plate, a cover support part, and a cover plate. The cover support part is located above the seat ring plate, and the cover plate is located above the cover support part. The cover support part is hinged to the seat ring plate so that the cover support part can be flipped relative to one side of the seat ring plate. Preferably, the seat plate includes multiple seat panels, which are connected by mortise and tenon joints. The seat plate formed by connecting the multiple seat panels has an opening. The cover plate support includes multiple frames, which are connected by mortise and tenon joints.

[0011] Preferably, the bottom surface of the seat ring plate is in contact with the top surface of the upper beam and the second upper beam; Preferably, the upper beam is further provided with screw holes, into which screws are inserted. The screws are inserted into the screw holes and screwed into the seat ring plate to fix the upper beam to the seat ring plate.

[0012] Preferably, the opening formed by the seat plate includes a large opening for inserting a spittoon and small openings located on both sides of the large opening.

[0013] Preferably, the two small openings are located on both sides of the large opening in the horizontal direction, and the two small openings are connected to the large opening.

[0014] Preferably, the edge of the single base panel is formed with a 45-degree inclined edge portion, the edge portion is provided with three side grooves and three protrusions, the side grooves and protrusions are arranged alternately, wherein the depth of the first side groove located at the top is less than the depth of the two side grooves located below it; the protrusion length of the third protrusion located at the bottom is less than the protrusion length of the two protrusions located above it.

[0015] Preferably, the support structure and / or cover structure is a wooden structure.

[0016] The beneficial effects of this utility model are as follows: In the support structure of the seat of the portable toilet of this utility model, the upper wedge-shaped protrusion at one end of the upper beam is aligned with the horizontal upper groove of the left column, and a horizontal pushing force is applied to make the upper wedge-shaped protrusion embed into the horizontal upper groove. The self-locking characteristic of the wedge structure is used to achieve compression and fixation, forming a horizontal anti-dislodgement limit. Similarly, the lower wedge-shaped protrusion at one end of the lower beam is aligned with the horizontal lower groove of the left column, and after embedding, compression and fixation are achieved. At this time, the first vertical groove of the left column, the upper horizontal groove of the upper beam, and the lower horizontal groove of the lower beam form a continuous U-shaped channel.

[0017] In the front side panel structure, the upper edge of the side panel is embedded in the upper horizontal groove of the upper beam, and the lower edge of the side panel is embedded in the lower horizontal groove of the lower beam. At this time, the upper limit step formed by the top surface and the side surface of the upper horizontal groove provides a bidirectional "upper-side" limit to the top of the side panel, preventing the side panel from coming off upward or shifting outward; the lower limit step formed by the bottom surface and the side surface of the lower horizontal groove provides a bidirectional "lower-side" limit to the bottom of the side panel, ensuring that the side panel is limited in both the vertical and horizontal directions.

[0018] The support structure of this portable toilet allows for circumferential positioning of the side panels without the need for screws or nails during installation. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the left column of this utility model; Figure 2 This is a structural schematic diagram of the right column of this utility model; Figure 3 This is a schematic diagram of the upper beam structure of this utility model; Figure 4 This is a schematic diagram of the lower beam of this utility model; Figure 5 This is a structural schematic diagram of the second upper beam of this utility model; Figure 6 This is a schematic diagram of the structure of the second lower beam of this utility model; Figure 7 This is a schematic diagram of the installation of the front side panel structure and the left side panel structure of this utility model; Figure 8 This is a schematic diagram of the support structure of this utility model; Figure 9 This is a structural schematic diagram of the seat ring plate of this utility model; Figure 10 This is a schematic diagram of the structure of one of the base panels of this utility model; Figure 11 This is a schematic diagram of the seat structure of the portable toilet of this utility model; Figure 12 This is a schematic diagram of the installation of the seat ring plate and cover plate support part of this utility model; 1. Left column; 101. Horizontal upper groove; 102. Horizontal lower groove; 103. First vertical groove; 104. Vertical upper groove; 105. Vertical lower groove; 106. Second vertical groove; 2. Right column; 3. Upper beam; 301. Upper wedge-shaped protrusion; 302. Upper transverse groove; 303. Upper limit step; 4. Lower beam; 401. Lower wedge-shaped protrusion; 402. Lower transverse groove; 403. Lower limit step; 404. Support plate groove; 5. Side panels; 6. Second upper beam; 7. Second lower beam; 8. Second side panel; 9. Seat ring plate; 901. Convex plate; 10. Cover plate support; 11. Cover plate; 12. Lower longitudinal support plate. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] like Figures 1-12 As shown, a seat structure for a portable toilet includes a support structure, which in turn includes a side panel structure. The side panel structure comprises a left column 1, a right column 2, an upper beam 3, a lower beam 4, and a side panel 5. Figure 1 , Figure 2 As shown, the left column 1 and right column 2 are respectively provided with an upper horizontal groove 101 with an opening on one side and a lower horizontal groove 102 with an opening on one side. Figure 3 As shown, the upper beam 3 has upper wedge-shaped protrusions 301 at both ends that are respectively formed with the transverse upper grooves 101 of the left column 1 and the right column 2 to form a compression fixation. Figure 4 As shown, the lower beam 4 has lower wedge-shaped protrusions 401 at both ends that are formed by compression and fixation with the transverse lower grooves 102 of the left column 1 and the right column 2, respectively.

[0022] like Figure 1 As shown, the horizontal upper groove 101 and the horizontal lower groove 102 in the left column 1 or the right column 2 are connected by the first vertical groove 103; as Figure 3 As shown, an upper transverse groove 302 is formed between the upper wedge-shaped protrusions 301 at both ends of the upper beam 3; as Figure 4 As shown, a lower transverse groove 402 is formed between the lower wedge-shaped protrusions 401 at both ends of the lower beam 4. Figure 7 , Figure 8 As shown, the upper, lower, left, and right edges of the side plate 5 are respectively located in the upper horizontal groove 302, the lower horizontal groove 402, the first vertical groove 103 of the left column 1, and the first vertical groove 103 of the right column 2. Figure 3 As shown, the top surface and side surface of the upper transverse groove 302 form an upper limit step 303 at the upper wedge-shaped protrusion 301 to limit the top of the side plate 5; as Figure 4 As shown, the bottom and side surfaces of the lower transverse groove 402 form a lower limiting step 403 at the lower wedge-shaped protrusion 401 to limit the bottom of the side plate 5.

[0023] Specifically, in one alternative implementation, such as Figure 1 , Figure 8 As shown, a portable toilet seat structure includes two side plate structures, which are divided into a front side plate structure and a rear side plate structure. The left column 1 and right column 2 in the front side plate structure and the rear side plate structure are respectively provided with a longitudinal upper groove 104 with an opening on one side and a longitudinal lower groove 105 with an opening on one side. The transverse upper groove 101 and transverse lower groove 102 in the left column are located on its right side, and the longitudinal upper groove 104 and longitudinal lower groove 105 in the left column are located on its rear side. The horizontal upper groove 101 and the horizontal lower groove 102 in the right column are located on its left side, and the vertical upper groove 104 and the vertical lower groove 105 in the right column are located on its rear side. The front and rear side panel structures are connected by a left and right side panel structure, wherein the left and right side panel structures respectively include a second upper beam 6, a second lower beam 7, and a second side panel 8. The second upper wedge-shaped protrusions at both ends of the second upper beam 6 of the left side plate structure or the right side plate structure are respectively squeezed and fixed to the longitudinal upper groove 104 of the left column 1 or the right column 2 of the front side plate structure and the longitudinal upper groove 104 of the left column 1 or the right column 2 of the rear side plate structure. The second lower wedge-shaped protrusions at both ends of the second lower beam 7 of the left or right side plate structure are respectively pressed and fixed to the longitudinal lower groove 105 of the left column 1 or right column 2 of the front side plate structure and the longitudinal lower groove 105 of the left column 1 or right column 2 of the rear side plate structure.

[0024] Specifically, in one optional embodiment, the longitudinal upper groove 104 in the left column 1 or the right column 2 is connected to the transverse upper groove 101, and the longitudinal lower groove 105 in the left column 1 or the right column 2 is connected to the transverse lower groove 102.

[0025] Specifically, in one alternative implementation, such as Figure 1 As shown, the longitudinal upper groove 104 and the longitudinal lower groove 105 in the left column 1 or the right column 2 are connected by the second vertical groove 106; as Figure 5 As shown, a second upper longitudinal groove is formed between the second upper wedge-shaped protrusions at both ends of the second upper beam 6; as Figure 6 As shown, a second lower longitudinal groove is formed between the second lower wedge-shaped protrusions at both ends of the second lower beam 7; as Figure 7 , Figure 8 As shown, the upper, lower, front, and rear edges of the second side plate 8 are located in the second upper longitudinal groove, the second lower longitudinal groove, the second vertical groove 106 of the front side plate structure, and the second vertical groove 106 of the rear side plate structure, respectively.

[0026] Specifically, in one optional embodiment, the top surface and side surface of the second upper longitudinal groove form a second upper limit step at the second upper wedge-shaped protrusion to limit the top of the second side plate 8; the bottom surface and side surface of the second lower longitudinal groove form a second lower limit step at the second lower wedge-shaped protrusion to limit the bottom of the second side plate 8.

[0027] Support structure assembly: Install the left side panel structure: The front edge of the second side panel 8 in the left side panel structure is placed in the second vertical groove 106 of the left column 1 in the front side panel structure. The second upper wedge-shaped protrusion at one end of the second upper beam 6 in the left side panel structure is aligned with the longitudinal upper groove 104 of the left column 1 in the front side panel structure, and is inserted to achieve compression fixation. The second lower wedge-shaped protrusion at one end of the second lower beam 7 is aligned with the longitudinal lower groove 105 of the left column 1 in the front side panel structure, and is inserted to achieve compression fixation. The second vertical groove 106, the second upper longitudinal groove of the second upper beam 6, and the second lower longitudinal groove of the second lower beam 7 form a continuous U-shaped channel.

[0028] The upper edge of the second side plate 8 is embedded in the second upper longitudinal groove of the second upper beam 6, and the lower edge is embedded in the second lower longitudinal groove of the second lower beam 7. The second upper limit step and the second lower limit step respectively limit the top and bottom of the second side plate 8 in both directions.

[0029] The second upper wedge-shaped protrusion at the other end of the second upper beam 6 in the left side panel structure is aligned with the longitudinal upper groove 104 of the left column 1 in the rear side panel structure, and is inserted to achieve compression fixation; the second lower wedge-shaped protrusion at the other end of the second lower beam 7 is aligned with the longitudinal lower groove 105 of the left column 1 in the rear side panel structure, and is inserted to achieve compression fixation, with the rear edge of the second side panel 8 located within the second vertical groove 106 of the left column 1 in the rear side panel structure. The right side panel structure is assembled in the same manner.

[0030] Install front side panel structure: The left edge of the side plate 5 in the front side plate structure is placed in the first vertical groove 103 of the left column 1 in the front side plate structure.

[0031] Align the upper wedge-shaped protrusion 301 at one end of the upper beam 3 with the transverse upper groove 101 of the left column 1, and apply a horizontal thrust to make the upper wedge-shaped protrusion 301 embed into the transverse upper groove 101. Utilize the self-locking characteristic of the wedge structure to achieve compression and fixation, forming a horizontal anti-disengagement limit. Similarly, align the lower wedge-shaped protrusion 401 at one end of the lower beam 4 with the transverse lower groove 102 of the left column 1, and embed it to achieve compression and fixation. At this time, the first vertical groove 103 of the left column 1, the upper transverse groove 302 of the upper beam 3, and the lower transverse groove 402 of the lower beam 4 form a continuous U-shaped channel.

[0032] The upper edge of the side plate 5 in the front side plate structure is embedded in the upper horizontal groove 302 of the upper beam 3, and the lower edge of the side plate 5 in the front side plate structure is embedded in the lower horizontal groove 402 of the lower beam 4. At this time, the upper limit step 303 formed by the top surface and the side surface of the upper horizontal groove 302 provides "upper-side" bidirectional limitation on the top of the side plate 5, preventing the side plate 5 from coming off upward or shifting outward; the lower limit step 403 formed by the bottom surface and the side surface of the lower horizontal groove 402 provides "lower-side" bidirectional limitation on the bottom of the side plate 5, ensuring that the side plate 5 is limited in both the vertical and horizontal directions.

[0033] The upper wedge-shaped protrusion 301 and lower wedge-shaped protrusion 401 at the other end of the upper beam 3 and lower beam 4 are respectively pressed and fixed to the transverse upper groove 101 and transverse lower groove 102 of the right column 2 in the front side panel structure. At the same time, the right edge of the side panel 5 in the front side panel structure is embedded into the first vertical groove 103 of the right column 2, thus completing the frame assembly of the front side panel structure. The rear side panel structure is assembled in the same way.

[0034] Specifically, in one alternative implementation, such as Figure 8As shown, a seat structure of a portable toilet includes a lower longitudinal support plate 12, with the two ends of the lower longitudinal support plate 12 respectively inserted into the support plate slot 404 of the lower beam 4 of the front side panel structure and the support plate slot 404 of the lower beam 4 of the rear side panel structure.

[0035] Installation of lower longitudinal support plate 12: The two ends of the lower longitudinal support plate 12 are respectively inserted into the support plate slot 404 of the lower beam 4 of the front side plate structure and the support plate slot 404 of the lower beam 4 of the rear side plate structure. The lower longitudinal support plate 12 is used to support the bottom of the spittoon into which the seat plate 9 is placed.

[0036] Specifically, in one alternative implementation, such as Figures 9-12 As shown, a seat structure for a portable toilet also includes a cover structure. The cover structure includes a seat ring plate 9, a cover support part 10, and a cover plate 11. The cover support part 10 is located above the seat ring plate 9, and the cover plate 11 is located above the cover support part 10. The cover support part 10 is hinged to the seat ring plate 9 so that the cover support part 10 can be flipped relative to one side of the seat ring plate 9.

[0037] Specifically, in one alternative implementation, such as Figures 9-12 As shown, the seat plate 9 includes multiple seat panels, which are connected by mortise and tenon joints. The seat plate 9 formed by connecting the multiple seat panels has an opening. The cover plate support 10 includes multiple frames, which are connected by mortise and tenon joints.

[0038] Specifically, in one optional embodiment, the bottom surface of the seat plate 9 is in contact with the top surface of the upper beam 3 and the second upper beam 6.

[0039] Specifically, in one optional embodiment, the upper beam 3 is further provided with screw holes, into which screws are inserted. The screws are inserted into the screw holes and screwed into the seat ring plate 9 to fix the upper beam 3 to the seat ring plate 9.

[0040] Specifically, in one alternative implementation, such as Figures 9-12 As shown, the opening formed by the seat plate 9 includes a large opening for inserting a spittoon and smaller openings located on both sides of the large opening. Specifically, in an optional embodiment, the two smaller openings are located on both sides of the large opening in the horizontal direction. The two smaller openings communicate with the large opening. The edges of both the large and smaller openings are rounded.

[0041] Specifically, in one alternative implementation, such as Figure 10As shown, the edge of the single-piece base panel is formed with a 45-degree inclined edge portion. The edge portion is provided with three side grooves and three protruding plates 901. The side grooves and protruding plates 901 are arranged alternately. The depth of the first side groove located at the top is less than the depth of the two side grooves located below it. The protruding length of the third protruding plate 901 located at the bottom is less than the protruding length of the first two protruding plates 901 located above it.

[0042] Specifically, in one optional embodiment, the support structure and / or cover structure is a wooden structure.

[0043] Assembly of the cover structure: 1. Assemble the seat ring plate 9 and the cover plate support part 10: Seat plate 9 assembly: The four seat panels are assembled using mortise and tenon joints. The protruding plate 901 of one seat panel is aligned with the side groove of the adjacent seat panel, so that the protruding plate 901 is embedded in the side groove, and finally assembled into a seat plate 9 with an opening. Wood glue can also be applied to the protruding plate 901 of the seat panel to make the splicing of the two seat panels more secure.

[0044] The cover plate support part 10 is spliced ​​together: the four frame pieces are spliced ​​together by mortise and tenon structure to form a square frame. The cover plate support part 10 serves as a support for the cover plate 11, so that a cavity is formed between the cover plate 11 and the seat ring plate 9.

[0045] Hinge installation: such as Figure 12 As shown, one side hinge plate of the hinge is fixed to the hinge groove opened on the frame of the cover plate support 10 by screws, and the other side hinge plate of the hinge is fixed to the seat ring plate 9. The cover plate support 10 is flipped relative to one side of the seat ring plate 9.

[0046] 2. The cover structure and supporting structure are fixed. Positioning and Fitting: Fit the bottom surface of the assembled seat plate 9 with the top surface of the upper beam 3 and the top surface of the second upper beam 6. Use a screwdriver to insert screws into the screw holes of the upper beam 3 and screw them into the seat plate 9 vertically. The screw connection further enhances the fixing strength between the seat plate 9 and the supporting structure, preventing the seat plate 9 from shifting during use.

[0047] Installation of cover plate 11: Place cover plate 11 directly on the top surface of cover plate support part 10, or fix cover plate 11 to cover plate support part 10 with adhesive or nails.

[0048] Hygiene and compatibility: The large opening in the seat plate 9 can be used with common portable toilet bowls such as spittoons, while the smaller openings on both sides make it easy to pick up the spittoon. When the lid 11 is closed, it can effectively prevent dust and odors, meeting home hygiene needs.

[0049] The above description is only a specific embodiment of the present utility model. Various examples and illustrations do not constitute a limitation on the substantive content of the present utility model. Those skilled in the art can modify or transform the above-described specific embodiments after reading the description without departing from the essence and scope of the utility model.

Claims

1. A seat structure for a portable toilet, comprising a support structure, characterized in that: The supporting structure includes a side plate structure, which includes a left column (1), a right column (2), an upper beam (3), a lower beam (4), and a side plate (5). The left column (1) and the right column (2) are respectively provided with a transverse upper groove (101) with one side opening and a transverse lower groove (102) with one side opening. The upper beam (3) is provided with upper wedge-shaped protrusions (301) that are squeezed and fixed to the transverse upper grooves (101) of the left column (1) and the right column (2) respectively. The lower beam (4) is provided with lower wedge-shaped protrusions (401) that are squeezed and fixed to the transverse lower grooves (102) of the left column (1) and the right column (2) respectively. The transverse upper groove (101) and transverse lower groove (102) in the left column (1) or right column (2) are connected by the first vertical groove (103). An upper horizontal groove (302) is opened between the upper wedge-shaped protrusions (301) at both ends of the upper beam (3), and a lower horizontal groove (402) is opened between the lower wedge-shaped protrusions (401) at both ends of the lower beam (4). The upper, lower, left, and right edges of the side plate (5) are respectively located in the upper horizontal groove (302) and the lower horizontal groove (402). 02) In the first vertical groove (103) of the left column (1) and the first vertical groove (103) of the right column (2), the top surface and side surface of the upper horizontal groove (302) form an upper limit step (303) at the upper wedge-shaped protrusion (301) to limit the top of the side plate (5); the bottom surface and side surface of the lower horizontal groove (402) form a lower limit step (403) at the lower wedge-shaped protrusion (401) to limit the bottom of the side plate (5).

2. The seat structure of a portable toilet according to claim 1, characterized in that: It includes two side plate structures, which are divided into a front side plate structure and a rear side plate structure. The left column (1) and right column (2) in the front side plate structure and the rear side plate structure are respectively provided with a longitudinal upper groove (104) with one side opening and a longitudinal lower groove (105) with one side opening. The transverse upper groove (101) and transverse lower groove (102) in the left column are located on its right side, and the longitudinal upper groove (104) and longitudinal lower groove (105) in the left column are located on its rear side. The transverse upper groove (101) and transverse lower groove (102) in the right column are located on its left side, and the longitudinal upper groove (104) and longitudinal lower groove (105) in the right column are located on its rear side. The front and rear side panel structures are connected by a left and right side panel structure, wherein the left and right side panel structures respectively include a second upper beam (6), a second lower beam (7), and a second side panel (8). The second upper wedge-shaped protrusions at both ends of the second upper beam (6) of the left side plate structure or the right side plate structure are respectively squeezed and fixed to the longitudinal upper groove (104) of the left column (1) or the right column (2) of the front side plate structure and the longitudinal upper groove (104) of the left column (1) or the right column (2) of the rear side plate structure. The second lower wedge-shaped protrusions at both ends of the second lower beam (7) of the left side plate structure or the right side plate structure are respectively squeezed and fixed to the longitudinal lower groove (105) of the left column (1) or the right column (2) of the front side plate structure and the longitudinal lower groove (105) of the left column (1) or the right column (2) of the rear side plate structure.

3. The seat structure of a portable toilet according to claim 2, characterized in that: The longitudinal upper groove (104) in the left column (1) or the right column (2) is connected to the transverse upper groove (101), and the longitudinal lower groove (105) in the left column (1) or the right column (2) is connected to the transverse lower groove (102).

4. The seat structure of a portable toilet according to claim 2, characterized in that: The longitudinal upper groove (104) and the longitudinal lower groove (105) in the left column (1) or the right column (2) are connected by the second vertical groove (106). The second upper longitudinal groove is opened between the second upper wedge protrusions at both ends of the second upper beam (6). The second lower longitudinal groove is opened between the second lower wedge protrusions at both ends of the second lower beam (7). The upper, lower, front and rear edges of the second side plate (8) are respectively located in the second upper longitudinal groove, the second lower longitudinal groove, the second vertical groove (106) of the front side plate structure, and the second vertical groove (106) of the rear side plate structure.

5. The seat structure of a portable toilet according to claim 4, characterized in that: The top surface and side surface of the second upper longitudinal groove form a second upper limit step at the second upper wedge protrusion to limit the top of the second side plate (8); the bottom surface and side surface of the second lower longitudinal groove form a second lower limit step at the second lower wedge protrusion to limit the bottom of the second side plate (8).

6. The seat structure of a portable toilet according to claim 2, characterized in that: It includes a lower longitudinal support plate (12), the two ends of which are respectively inserted into the support plate slot (404) of the lower beam (4) of the front side plate structure and the support plate slot (404) of the lower beam (4) of the rear side plate structure.

7. The seat structure of a portable toilet according to claim 1, characterized in that: It also includes a cover structure, which includes a seat ring plate (9), a cover plate support (10), and a cover plate (11). The cover plate support (10) is located above the seat ring plate (9), and the cover plate (11) is located above the cover plate support (10). The cover plate support (10) is hinged to the seat ring plate (9) so that the cover plate support (10) can be flipped relative to one side of the seat ring plate (9).

8. The seat structure of a portable toilet according to claim 7, characterized in that: The seat plate (9) includes multiple seat panels, which are connected by mortise and tenon joints. The seat plate (9) formed by connecting multiple seat panels has an opening. The cover plate support (10) includes multiple frames, which are connected by mortise and tenon joints.

9. The seat structure of a portable toilet according to claim 7, characterized in that: The bottom surface of the seat plate (9) is in contact with the top surface of the upper beam (3) and the second upper beam (6).

10. The seat structure of a portable toilet according to claim 7, characterized in that: The upper beam (3) is also provided with screw holes, and screws are inserted into the screw holes. The screws are inserted into the screw holes and screwed into the seat plate (9) so that the upper beam (3) is fixed to the seat plate (9).

11. The seat structure of a portable toilet according to claim 7, characterized in that: The opening formed by the seat plate (9) includes a large opening for inserting a spittoon and small openings located on both sides of the large opening.

12. The seat structure of a portable toilet according to claim 7, characterized in that: The two small openings are located on either side of the large opening in the horizontal direction, and the two small openings are connected to the large opening.

13. The seat structure of a portable toilet according to claim 8, characterized in that: The edge of the single-piece base panel is formed with a 45-degree inclined edge portion. The edge portion is provided with three side grooves and three protrusions (901). The side grooves and protrusions (901) are spaced apart. The depth of the first side groove located at the top is less than the depth of the two side grooves located below it. The protrusion length of the third protrusion (901) located at the bottom is less than the protrusion length of the two protrusions (901) located above it.

14. The seat structure of a portable toilet according to claim 7, characterized in that: The supporting structure and / or cover structure are made of wood.

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