Seamless seat pan structure

Abstract

The utility model discloses a seamless seat ring structure can carry out the preposition to lower cover, ensure the positioning accuracy to the high quality sealing strip of the secondary injection molding process forming is convenient, and sealing strip combines firm, and not easy to fall off. Seamless seat ring structure, including body, lower cover, inner ring sealing strip and outer ring sealing strip, body is provided with the accommodation groove, and the both sides port department of accommodation groove all is provided with the step, lower cover sets up in the accommodation groove and cooperates at the step department, to make the body and lower cover between form the recess of inside and outside two circles, the step side wall on the inside and outside of body all is provided with a plurality of first clamping parts, and the inside and outside side wall on lower cover all is provided with the second clamping part corresponding first clamping part, through a plurality of pairs of first clamping parts and the nesting cooperation of second clamping part make lower cover and the step close together, at least one side of first clamping part, at least one side of second clamping part is provided with groove structure respectively, through the secondary injection molding process in the recess of inside and outside two circles fills up injection plastic to form inner ring sealing strip and outer ring sealing strip.

Description

Technical Field

[0001] This utility model belongs to the field of toilet seat technology, and specifically refers to a seamless seat structure. Background Technology

[0002] Smart toilets typically have an internal cavity for housing electrical components such as heating devices, enabling a range of additional functions. In this case, the seat is usually a two-piece structure, consisting of the main body and the lower cover. The main body has a recessed slot; after the electrical components are installed into this slot, the lower cover is then installed around its perimeter to cover it, completing the assembly. Because the lower cover is located below the main body, meaning the assembly surface is on the lower surface where the seat contacts the ceramic body, gaps or uneven joints can easily trap dirt and grime.

[0003] In existing technologies, the seamless welding of the lower cover and the body is generally achieved through friction welding. However, friction welding is mainly suitable for shafts and symmetrical structures, and cannot meet the welding requirements of complex-shaped seat rings. At the same time, the forming process of friction welding is complex. When the shape of the connecting surface is complex, welding points and connectors need to be designed in many locations. For products of different sizes, specifications and shapes, multiple high mold costs are required, and there is also the risk of failure due to poor welding or loose connection. Utility Model Content

[0004] The main purpose of this utility model is to provide a seamless seat ring structure to solve the problems existing in the prior art. It can pre-position the lower cover to ensure accurate positioning so that a sealing strip that meets the product requirements can be formed through a secondary injection molding process. The sealing strip is firmly attached and not easy to fall off.

[0005] To achieve the above objectives, the solution of this utility model is: A seamless seat ring structure includes a body, a lower cover, an inner sealing strip, and an outer sealing strip. The body is provided with a receiving groove, and steps are provided at both ends of the receiving groove. The lower cover is disposed in the receiving groove and fits into the steps, so that the body and the lower cover form inner and outer grooves. A plurality of first snap-fit ​​portions are provided on the sidewalls of the steps on both the inner and outer sides of the body, and second snap-fit ​​portions are provided on the inner and outer sides of the lower cover corresponding to the first snap-fit ​​portions. The lower cover and the steps are tightly fitted by the nesting and engagement of a plurality of pairs of first snap-fit ​​portions and second snap-fit ​​portions. At least one side of the first snap-fit ​​portion and at least one side of the second snap-fit ​​portion are respectively provided with a groove structure. The inner and outer sealing strips are formed by filling the inner and outer grooves with injection molding material through a secondary injection molding process.

[0006] The first snap-fit ​​part is a groove structure, and the second snap-fit ​​part is a protrusion structure; the left and right width of the first snap-fit ​​part is greater than the left and right width of the second snap-fit ​​part.

[0007] Preferably, the first snap-fit ​​portion has a first limiting surface, and the second snap-fit ​​portion forms a second limiting surface corresponding to the first limiting surface; when the second snap-fit ​​portion is embedded in the first snap-fit ​​portion, the first limiting surface and the second limiting surface abut against each other to prevent the lower cover from falling out of the receiving groove.

[0008] Preferably, the second snap-fit ​​portion is further provided with a guide slope on the opposite side of the second limiting surface.

[0009] The lower cover and the step are in a state of complete circumference fit together.

[0010] Both sides of the first and second snap-fit ​​parts are provided with groove structures.

[0011] After adopting the above technical solution, the present invention has the following technical effects: This invention achieves a surface seal by embedding the lower cover within the receiving groove of the main body and using a first and second snap-fit ​​portion to tightly fit the lower cover onto the step of the receiving groove. This creates two approximately U-shaped grooves between the main body and the lower cover. An inner and outer sealing strip can be formed within these grooves using a secondary injection molding process. This mating structure allows for easy control of the material flow gap between the main body and the lower cover, simplifies the injection molding process, reduces production costs, increases efficiency, and improves the product's durability and anti-aging properties. Simultaneously, the first snap-fit ​​portion... At least one side of the second snap-fit ​​portion has reserved space for the injection of plastic. The formed inner ring sealing strip and outer ring sealing strip can be formed with concave and convex structures at the first snap-fit ​​portion, the second snap-fit ​​portion and their side positions, which can improve the bonding firmness between the sealing strip and the body / lower cover, thereby fixing the formed sealing strip and realizing secondary fixation between the body and the lower cover, preventing it from falling off due to shaking, impact and other phenomena. Compared with the traditional friction welding process, the seat ring of this utility model reduces welding points and connecting parts, reducing the risk of failure caused by poor welding or loose connection. Attached Figure Description

[0012] Figure 1 Breakdown of specific embodiments of this utility model Figure One .

[0013] Figure 2 Breakdown of specific embodiments of this utility model Figure Two .

[0014] Figure 3 This is a top view of a specific embodiment of the present utility model.

[0015] Figure 4 for Figure 3 A cross-sectional view along the EE direction.

[0016] Figure 5 for Figure 3 A cross-sectional view along the FF direction.

[0017] Figure 6 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 7 for Figure 1 Enlarged view of point B in the middle.

[0019] Figure 8 for Figure 2 Enlarged view of point C in the middle.

[0020] Figure 9 for Figure 2 Enlarged view of point D in the middle.

[0021] Figure 10 for Figure 4 Enlarged view of point G (with the sealing strip hidden).

[0022] Figure 11 for Figure 5 Enlarged view of section H (with the sealing strip hidden).

[0023] Explanation of icon numbers: 100 - Body; 101 - Receiving groove; 102 - Step; 103 - First locking part; 104 - First limiting surface; 200 - Lower cover; 201 - Second snap-fit ​​part; 202 - Second limiting surface; 203 - Guide slope; 300 - Inner ring sealing strip; 301 - Raised block 400 - Outer ring sealing strip; 401 - Raised block; 500 - Groove. Detailed Implementation

[0024] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0025] refer to Figures 1 to 11 As shown, this utility model discloses a seamless seat ring structure, including a body 100, a lower cover 200, an inner ring sealing strip 300, and an outer ring sealing strip 400; The main body 100 is provided with a receiving groove 101, which matches the shape of the seat ring to form a ring connected end to end; steps 102 are provided at both ends of the receiving groove 101. The lower cover 200 is disposed in the receiving groove 101 and fits at the step 102, so that the body 100 and the lower cover 200 form two inner and outer grooves 500; The inner and outer sides of the body 100 are provided with a number of first snap-fit ​​parts 103, and the inner and outer sides of the lower cover 200 are provided with second snap-fit ​​parts 201 corresponding to the first snap-fit ​​parts 103; the lower cover 200 and the step 102 are tightly fitted by the nesting and cooperation of a number of pairs of first snap-fit ​​parts 103 and second snap-fit ​​parts 201, thereby achieving the sealing effect during injection molding. At least one side of the first latching portion 103 and at least one side of the second latching portion 201 are respectively provided with a groove structure; The inner and outer sealing strips 300 and 400 are formed by filling the inner and outer grooves 500 with injection plastic through a secondary injection molding process.

[0026] With the above structure, this utility model achieves a surface seal by embedding the lower cover 200 within the receiving groove 101 of the body 100, and using the first snap-fit ​​part 103 and the second snap-fit ​​part 201 to tightly fit the lower cover 200 against the step 102 of the receiving groove 101. This results in two approximately U-shaped grooves 500 forming between the body 100 and the lower cover 200. An inner sealing strip 300 and an outer sealing strip 400 can be formed within the inner and outer grooves 500 respectively through a secondary injection molding process. The fitting structure makes it easy to control the material passage gap between the body 100 and the lower cover 200, simplifying the injection molding process, reducing production costs, increasing efficiency, and improving the product's durability and anti-aging properties. Simultaneously, spaces for plastic injection are reserved on at least one side of the first snap-fit ​​portion 103 and the second snap-fit ​​portion 201, allowing the inner ring sealing strip 300 and outer ring sealing strip 400 to have corresponding concave-convex structures formed at the first snap-fit ​​portion 103, the second snap-fit ​​portion 201, and their sides (see...). Figure 6 , 9 This design can improve the bonding strength between the sealing strip and the body 100 / lower cover 200, thereby fixing the formed sealing strip and achieving secondary fixing of the body 100 and the lower cover 200, preventing detachment due to shaking, impact, etc. Compared with the traditional friction welding process, the seat ring of this utility model reduces welding points and connecting parts, reducing the risk of failure caused by poor welding or loose connection.

[0027] The following are specific embodiments of the present invention.

[0028] The first engaging portion 103 is a groove structure, and the second engaging portion 201 is a protruding structure, thereby achieving a nested fit between the first engaging portion 103 and the second engaging portion 201. The left and right width of the first engaging portion 103 is greater than the left and right width of the second engaging portion 201, meaning that the groove structure of the first engaging portion 103 is connected to the groove provided on its side to form an integral unit. Directly machining the groove structure on the side of the first engaging portion 103 / second engaging portion 201 can concentrate the concave and convex structures on the side wall of the body 100 / lower cover 200, reducing the complexity of processing steps and molds, and lowering manufacturing costs. At the same time, this structural design makes the first engaging portion 103 and the second engaging portion 201 fit more tightly due to the injection of plastic, further improving the sealing effect during injection molding and ensuring a firm bond between the sealing strip and the body and lower cover.

[0029] Furthermore, the first latching portion 103 has a first limiting surface 104, and the second latching portion 201 forms a second limiting surface 202 corresponding to the first limiting surface 104. When the second latching portion 201 is embedded in the first latching portion 103, the first limiting surface 104 and the second limiting surface 202 abut against each other to prevent the lower cover 200 from falling out of the receiving groove 101. Thus, the second limiting surface 202 of the second latching portion 201 forms a hook-like structure, hooking onto the first limiting surface 104, which can prevent the second latching portion 201 from falling out of the first latching portion 103, thereby preventing the lower cover 200 from falling off due to external force.

[0030] Secondly, the second latching portion 201 is further provided with a guide slope 203 on the opposite side of the second limiting surface 202. When assembling the lower cover 200, the port of the receiving groove 101 slides along the guide slope 203 and deforms in a direction away from the second latching portion 201, so that the second latching portion 201 can slide into the first latching portion 103. In this embodiment, the second limiting surface 202 is below, the guide slope 203 is above, the receiving groove 101 is in a downward-facing state, and the lower cover 200 is installed below the body 100.

[0031] The lower cover 200 and the step 102 are in a state of full-circle fit to ensure complete sealing during the secondary injection molding process.

[0032] Both sides of the first snap-fit ​​part 103 and the second snap-fit ​​part 201 are provided with groove structures to achieve a symmetrical structural design, which makes the force more balanced and the product structural stability higher.

[0033] In this embodiment, the inner ring sealing strip 300 and the outer ring sealing strip 400 are formed as protrusions at the positions corresponding to the first snap-fit ​​portion 103 and as grooves at the positions corresponding to the second snap-fit ​​portion 201 during secondary injection molding. The side positions corresponding to the first snap-fit ​​portion 103 and the second snap-fit ​​portion 201 are also formed as protrusions. See [reference needed] Figure 6 ,9 Taking the inner ring sealing strip 300 as an example, the outer side wall of the inner ring sealing strip 300 has continuous protrusions, and its inner side wall has grooves and protrusions located on both sides of the grooves.

[0034] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A seamless seat ring structure, characterized in that: Includes the main body, lower cover, inner ring sealing strip, and outer ring sealing strip; The main body is provided with a receiving groove, and steps are provided at both ends of the receiving groove; The lower cover is disposed in the receiving groove and fits into the step, so that the body and the lower cover form two inner and outer grooves; The inner and outer sides of the main body are provided with a plurality of first snap-fit ​​parts, and the inner and outer sides of the lower cover are provided with second snap-fit ​​parts corresponding to the first snap-fit ​​parts; the lower cover and the step are tightly fitted by the nesting and cooperation of a plurality of pairs of first snap-fit ​​parts and second snap-fit ​​parts. At least one side of the first latching portion and at least one side of the second latching portion are respectively provided with a groove structure; The inner and outer sealing strips are formed by filling the inner and outer grooves with injection plastic through a secondary injection molding process.

2. The seamless seat ring structure as described in claim 1, characterized in that: The first snap-fit ​​part is a groove structure, and the second snap-fit ​​part is a protrusion structure; the left and right width of the first snap-fit ​​part is greater than the left and right width of the second snap-fit ​​part.

3. The seamless seat ring structure as described in claim 2, characterized in that: The first snap-fit ​​portion has a first limiting surface, and the second snap-fit ​​portion forms a second limiting surface corresponding to the first limiting surface; when the second snap-fit ​​portion is embedded in the first snap-fit ​​portion, the first limiting surface and the second limiting surface abut against each other to prevent the lower cover from falling out of the receiving groove.

4. The seamless seat ring structure as described in claim 3, characterized in that: The second snap-fit ​​part is also provided with a guide slope on the opposite side of the second limiting surface.

5. The seamless seat ring structure as described in claim 1, characterized in that: The lower cover and the step are in a state of complete circumference fit together.

6. The seamless seat ring structure as described in claim 1, characterized in that: Both sides of the first and second snap-fit ​​parts are provided with groove structures.

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