A connecting structure of a water cup assembly and a bowl of a dishwasher

Abstract

The application relates to the technical field of dishwashers, in particular to a connecting structure of an inner container and a water cup assembly of a dishwasher, which comprises: an inner container, the bottom of the inner container is provided with a first connecting part; a water cup assembly, which comprises a water cup body and a second connecting part connected with the first connecting part; wherein the first connecting part is provided with a first stepped surface, the first stepped surface comprises a first connecting surface and a second connecting surface located on a lower surface, the first connecting surface and the second connecting surface are arranged along a radial direction, and a third connecting surface extending along an axial direction is arranged between the first connecting surface and the second connecting surface; the second connecting part is provided with a second stepped surface matched with the first stepped surface, the second stepped surface comprises a first contact surface and a second contact surface located on an upper surface, and the first contact surface and the second contact surface are arranged along the radial direction.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to a connection structure between the inner liner of a dishwasher and a water cup assembly. Background Technology

[0002] Dishwashers, considered a "miracle appliance" in modern kitchens, offer numerous advantages such as high efficiency, time-saving, and excellent cleaning results. A water cup assembly is installed at the bottom of the dishwasher's inner tub, playing a crucial role in water collection, drainage, and water circulation. During operation, the water sprayed from the inner tub collects in the water cup assembly. After use, the water in the water cup assembly drains through the drain pipe at its bottom, thus discharging the wastewater. Additionally, a drain pump is installed in the drain pipe to provide power for the drainage process, ensuring a relatively smooth discharge of wastewater.

[0003] To improve the tightness of the connection, a sealing ring is often set at the connection between the water cup assembly and the inner liner. In the existing technology, when the water cup assembly is connected to the inner liner, the sealing ring may be squeezed and deformed when the nuts are tightened, which will cause the sealing ring to fail to fit tightly with the surface of the inner liner and the water cup assembly, thus causing water leakage. Utility Model Content

[0004] In view of the shortcomings or problems existing in the prior art, this disclosure provides a connection structure between the inner tank and the water cup assembly of a dishwasher, which can effectively prevent water leakage at the connection between the inner tank and the water cup assembly.

[0005] The technical solution adopted by this disclosure to solve the above-mentioned technical problem is: a connection structure between the inner tub and the water cup assembly of a dishwasher, comprising:

[0006] The inner liner has a first connecting part at its bottom;

[0007] A water cup assembly includes a water cup body and a second connecting part connected to a first connecting part;

[0008] in,

[0009] The first connecting part is provided with a first stepped surface, the first stepped surface includes a first connecting surface and a second connecting surface located on the lower surface, the first connecting surface and the second connecting surface are arranged radially, and a third connecting surface extending axially is provided between the first connecting surface and the second connecting surface.

[0010] The second connecting part is provided with a second step surface that mates with the first step surface. The second step surface includes a first contact surface and a second contact surface located on the upper surface. The first contact surface and the second contact surface are arranged radially. A third contact surface extending axially is provided between the first contact surface and the second contact surface. A fourth contact surface extending axially from the second contact surface is provided.

[0011] The first connecting surface is at least partially attached to the first contact surface, the third connecting surface is disposed opposite to the fourth contact surface, and a receiving space for installing a sealing ring is provided between the third connecting surface and the fourth contact surface.

[0012] In a preferred embodiment, the projection area of ​​the second connecting surface on the horizontal plane completely covers the projection area of ​​the fourth contact surface on the horizontal plane.

[0013] In a preferred embodiment, the free end of the fourth contact surface extends radially outward to form a first mating surface, and the projection area of ​​the second connecting surface on the horizontal plane completely covers the projection area of ​​the first mating surface on the horizontal plane.

[0014] In a preferred embodiment, a positioning protrusion is provided on the side of the first contact surface away from the second contact surface, and the first connecting surface is located between the positioning protrusion and the third contact surface.

[0015] In a preferred embodiment, a smooth transition structure is provided at the connection between the first contact surface and the third contact surface; a smooth transition structure is provided at the connection between the first connecting surface and the third connecting surface.

[0016] In a preferred embodiment, a smooth transition structure is provided at the connection between the second contact surface and the fourth contact surface; a smooth transition structure is provided at the connection between the second connecting surface and the third connecting surface.

[0017] In a preferred embodiment, the smooth transition structure is a chamfer or a rounded corner.

[0018] In a preferred embodiment, the angle between the second contact surface and the third contact surface is a right angle or an obtuse angle, and the extension direction of the third contact surface is parallel to the central axis of the water cup body.

[0019] In a preferred embodiment, both the first contact surface and the second contact surface are inclined surfaces; both the first connecting surface and the second connecting surface are inclined surfaces.

[0020] In a preferred embodiment, the accommodating space is an annular groove.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: the mutual cooperation between the first step surface and the second step surface provides guidance for the installation of the water cup assembly and the inner liner, enabling rapid positioning and assembly; a receiving space is formed between the third connecting surface and the fourth contact surface, which is used to install the sealing ring. This arrangement prevents the sealing ring from shifting or deforming during installation, thereby achieving a better sealing effect; the fit between the first contact surface and the first connecting surface serves both a positioning function and a certain sealing function, while the sealing ring located in the receiving space further seals the area. The double sealing provides a better sealing effect and effectively prevents water leakage at the connection between the inner liner and the water cup assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection structure between the inner tub and the water cup assembly of a dishwasher according to this application;

[0023] Figure 2 This is a schematic diagram of the water cup assembly of this application;

[0024] Figure 3 This is a schematic diagram of the structure of the bottom of the inner liner of this application;

[0025] Figure 4 For this application Figure 3 A magnified view of a section at point A in the middle;

[0026] Figure 5 This is one of the cross-sectional views of the connection structure between the inner tub and the water cup assembly of a dishwasher according to this application;

[0027] Figure 6 For this application Figure 5 A magnified view of a section at point B in the middle;

[0028] Figure 7 This is a second cross-sectional view of the connection structure between the inner tub and the water cup assembly of a dishwasher according to this application.

[0029] In the diagram: 1. Inner liner; 2. Water cup assembly; 3. Water cup body; 4. First connecting part; 5. Second connecting part; 6. Through hole; 7. First contact surface; 8. Second contact surface; 9. Third contact surface; 10. Fourth contact surface; 11. First connecting surface; 12. Second connecting surface; 13. Third connecting surface; 14. First mating surface; 15. Positioning protrusion; 16. Accommodating space; 17. Sealing ring. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0031] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0032] Please refer to Figures 1-7 As shown, this application discloses a connection structure between the inner tub and the water cup assembly of a dishwasher, including an inner tub 1 and a water cup assembly 2. The bottom of the inner tub 1 is provided with a first connecting part 4 and a through hole 6 for drainage. Water in the inner tub 1 enters the water cup assembly 2 through the through hole 6. The first connecting part 4 is arranged around the through hole 6. The water cup assembly 2 includes a water cup body 3 and a second connecting part 5 connected to the first connecting part 4. The second connecting part 5 is located at the opening of the water cup body 3. The water cup body 3 and the second connecting part 5 are integrally formed. The second connecting part 5 is generally a flared structure. The first connecting part 4 is provided with a first stepped surface that extends circumferentially around the axial direction. The first stepped surface includes a first connecting surface 11 and a second connecting surface 12 located on the lower surface. The first connecting surface 11 and the second connecting surface 12 extend along the axial direction. The first connecting surface 11 and the second connecting surface 12 are arranged radially, and a third connecting surface 13 extending axially is provided between them. The second connecting part 5 is provided with a second step surface that mates with the first step surface. The second step surface includes a first contact surface 7 and a second contact surface 8 located on the upper surface. The first contact surface 7 and the second contact surface 8 are arranged radially, and a third contact surface 9 extending axially is provided between the first contact surface 7 and the second contact surface 8. A fourth contact surface 10 extends axially from the second contact surface 8. The first connecting surface 11 is at least partially attached to the first contact surface 7. The third connecting surface 13 and the fourth contact surface 10 are arranged opposite to each other, and a receiving space 16 for installing the sealing ring 17 is provided between the third connecting surface 13 and the fourth contact surface 10. Specifically, the receiving space 16 is an annular groove. The interaction between the first and second stepped surfaces provides guidance for the installation of the water cup assembly 2 and the inner liner 1, enabling rapid positioning and assembly. This application features dual sealing, including radial and axial sealing. The radial fit between the first connecting surface 11 and the first contact surface 7 achieves radial sealing, while the sealing ring 17, installed in the receiving space 16, provides axial sealing. This dual sealing provides a reliable and durable sealing effect, effectively preventing water leakage at the connection between the inner liner 1 and the water cup assembly 2. Furthermore, the fit between the first contact surface 7 and the first connecting surface 11 not only serves a positioning function but also a sealing function.

[0033] The projection area of ​​the second connecting surface 12 on the horizontal plane completely covers the projection area of ​​the fourth contact surface 10 on the horizontal plane. A first mating surface 14 extends radially outward from the free end of the fourth contact surface 10, and the projection area of ​​the second connecting surface 12 on the horizontal plane completely covers the projection area of ​​the first mating surface 14 on the horizontal plane. This arrangement ensures that the receiving space 16 is completely located below the second connecting surface 12, and that the sealing ring 17 located in the receiving space 16 is completely located below the second connecting surface 12. The second connecting surface 12 provides a certain degree of limitation and protection for the sealing ring 17, making the sealing ring 17 more securely located in the receiving space 16.

[0034] like Figure 2 As shown, specifically, a positioning protrusion 15 is provided on the side of the first contact surface 7 away from the second contact surface 8, and the first connecting surface 11 is located between the positioning protrusion 15 and the third contact surface 9. Specifically, the positioning protrusion 15 is a series of arc-shaped protrusions arranged continuously along the circumference or several arc-shaped protrusions spaced apart. The positioning protrusion 15 serves a positioning function; when installing the water cup assembly 2, the outer side of the positioning protrusion 15 mates with the end face of the first connecting surface 11, achieving rapid positioning and installation. Preferably, the positioning protrusion 15 is a series of arc-shaped protrusions spaced apart along the circumference, with notches between adjacent arc-shaped protrusions. These notches form a flow channel, allowing water in the inner liner 1 to enter the water cup body 3 more smoothly through the flow channel.

[0035] Please continue reading. Figure 2 , Figure 4 and Figure 6 As shown, it should be noted that a smooth transition structure is provided at the connection between the first contact surface 7 and the third contact surface 9; a smooth transition structure is provided at the connection between the first connecting surface 11 and the third connecting surface 13; a smooth transition structure is provided at the connection between the second contact surface 8 and the fourth contact surface 10; and a smooth transition structure is provided at the connection between the second connecting surface 12 and the third connecting surface 13. The smooth transition structure effectively reduces stress at these connections, better absorbs and disperses stress, thereby improving the stability of the connection structure. The smooth transition structure reduces dead angles and gaps at the connections, making them easier to clean. Furthermore, the smooth transition structure makes the alignment and installation of the connecting components easier. Specifically, the smooth transition structure is a chamfer or rounded corner.

[0036] Preferably, the angle between the second contact surface 8 and the third contact surface 9 is a right angle or an obtuse angle, and no chamfering is performed at this point. Furthermore, the extension direction of the third contact surface 9 is parallel to the central axis of the water cup body 3. If water seeps out from the contact point between the first contact surface 7 and the first connecting surface 11, it must cross the third contact surface 9 to continue flowing outwards. Since the angle between the second contact surface 8 and the third contact surface 9 is a right angle or an obtuse angle, it acts as a physical barrier. Compared to a smooth transition structure, water is less likely to cross the third contact surface 9 and flow into the receiving space 16.

[0037] Preferably, both the first connecting surface 11 and the second connecting surface 12 are inclined surfaces. The inclined surfaces of the first connecting surface 11 and the second connecting surface 12 serve as guides, allowing water at the bottom of the inner liner 1 to flow smoothly towards the water cup assembly 2. Both the first contact surface 7 and the second contact surface 8 are inclined surfaces. The inclined surface of the first contact surface 7 allows it to better fit with the first connecting surface 11, and the inclined surface of the second contact surface 8 allows the sealing ring 17 to fit against the third connecting surface 13 (i.e., the inner side of the accommodating space 16), thereby achieving a better sealing effect.

[0038] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A connection structure between the inner tub and the water cup assembly of a dishwasher, characterized in that, include: The inner liner (1) has a first connecting part (4) at its bottom. The water cup assembly (2) includes a water cup body (3) and a second connecting part (5) connected to the first connecting part (4); in, The first connecting part (4) is provided with a first stepped surface, the first stepped surface includes a first connecting surface (11) and a second connecting surface (12) located on the lower surface, the first connecting surface (11) and the second connecting surface (12) are arranged radially, and a third connecting surface (13) extending axially is provided between the first connecting surface (11) and the second connecting surface (12). The second connecting part (5) is provided with a second step surface that cooperates with the first step surface. The second step surface includes a first contact surface (7) and a second contact surface (8) located on the upper surface. The first contact surface (7) and the second contact surface (8) are arranged radially. A third contact surface (9) extending axially is provided between the first contact surface (7) and the second contact surface (8). A fourth contact surface (10) extends axially from the second contact surface (8). The first connecting surface (11) is at least partially attached to the first contact surface (7), the third connecting surface (13) is disposed opposite to the fourth contact surface (10), and a receiving space (16) for installing the sealing ring (17) is provided between the third connecting surface (13) and the fourth contact surface (10).

2. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, The projection area of ​​the second connecting surface (12) on the horizontal plane completely covers the projection area of ​​the fourth contact surface (10) on the horizontal plane.

3. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 2, characterized in that, The free end of the fourth contact surface (10) extends radially outward to form a first joint surface (14), and the projection area of ​​the second connecting surface (12) on the horizontal plane completely covers the projection area of ​​the first joint surface (14) on the horizontal plane.

4. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, A positioning protrusion (15) is provided on the side of the first contact surface (7) away from the second contact surface (8), and the first connecting surface (11) is located between the positioning protrusion (15) and the third contact surface (9).

5. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, A smooth transition structure is provided at the connection between the first contact surface (7) and the third contact surface (9); a smooth transition structure is provided at the connection between the first connecting surface (11) and the third connecting surface (13).

6. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, A smooth transition structure is provided at the connection between the second contact surface (8) and the fourth contact surface (10); a smooth transition structure is provided at the connection between the second connecting surface (12) and the third connecting surface (13).

7. The connection structure between the inner liner and the water cup assembly of the dishwasher according to claim 5 or 6, characterized in that, The smooth transition structure is a chamfer or rounded corner.

8. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, The angle between the second contact surface (8) and the third contact surface (9) is a right angle or an obtuse angle, and the extension direction of the third contact surface (9) is parallel to the central axis of the water cup body (3).

9. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, The first contact surface (7) and the second contact surface (8) are both inclined surfaces; the first connecting surface (11) and the second connecting surface (12) are both inclined surfaces.

10. The connection structure between the inner tub and the water cup assembly of the dishwasher according to claim 1, characterized in that, The accommodating space (16) is an annular groove.

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