Water seepage prevention structure

Abstract

The utility model discloses a water seepage prevention structure which comprises an installation piece, an installation cavity is formed in the installation piece, filler is poured into the installation cavity, at least one protruding part and at least one groove part are arranged on the inner wall of the installation cavity, and after the filler is formed, a concave part or a convex part matched with the protruding part or the groove part is formed on the outer wall of the filler. Due to the fact that the installation part and the filler are made of different materials, a gap is formed between the inner wall of the installation cavity and the outer wall of the filler during thermal expansion and cold contraction, the protruding part is matched with the concave part and / or the groove part is matched with the protruding part, and therefore the gap is limited to communicate with the exterior of the installation part through the opening of the installation cavity. The temperature controller is simple in structure, the limiting structure is additionally arranged, a gap is formed between the filler located in the second installation cavity and the inner wall of the second installation cavity during thermal expansion and cold contraction, but due to the arrangement of the limiting structure above, the second installation cavity can be blocked, the effect of preventing water from flowing into the temperature controller is achieved, and the service life of the temperature controller is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of hot water bottle technology, specifically relating to a water-proof structure. Background Technology

[0002] An electric hot water bag is a device that heats the liquid inside the bag using an electric heating element. It is often equipped with a thermostat to detect and limit the temperature inside the bag. The thermostat is usually installed on a mounting bracket inside the bag. The installation method involves inserting the thermostat into the mounting cavity of the bracket, and then filling the bag with the filler material. Figure 1 As shown, since the mounting components and the filler are made of two different materials with different coefficients of thermal expansion and contraction, a gap is formed between the outer wall of the filler and the inner wall of the mounting cavity during pre-cooling. In traditional mounting component structures, water is easily allowed to enter. Therefore, it is very important to obtain a waterproof structure that overcomes the above defects. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides a waterproof structure, including an installation component. The installation component has an installation cavity, which is filled with a filler. The inner wall of the installation cavity has at least one protrusion and / or groove. After the filler is formed, its outer wall forms a concave portion and / or a protrusion that matches the protrusion or groove. Because the installation component and the filler are made of different materials, a gap is formed between the inner wall of the installation cavity and the outer wall of the filler during thermal expansion and contraction. The gap is prevented from communicating with the outside of the installation component through the opening of the installation cavity by the protrusion engaging with the concave portion and / or the groove engaging with the protrusion.

[0004] The inner wall of the mounting cavity is provided with a first stepped surface, and the protrusion or groove is disposed on the first stepped surface.

[0005] The protrusion and / or groove are annular.

[0006] The first stepped surface divides the mounting cavity into a first mounting cavity located on the outside and a second mounting cavity located on the inside, and the inner wall of the protrusion is an extension of the inner wall of the second mounting cavity.

[0007] At least one boss is provided on the first step surface and on the inner wall of the mounting cavity, and the upper surface of the boss forms a second step surface.

[0008] It also includes a support body, on which a mounting groove for installing an electric heating element is provided, and the mounting component is integrally die-cast with the support body.

[0009] The mounting component is an aluminum die-casting part. The filler is epoxy resin.

[0010] A thermostat is installed on the inner wall of the mounting cavity. The external temperature is transferred to the thermostat through the mounting component. The filling material is poured into the mounting cavity where the thermostat is installed.

[0011] The filling material fills the mounting cavity.

[0012] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and adds a limiting structure. When thermal expansion and contraction occur, a gap is generated between the filler in the second mounting cavity and the inner wall of the second mounting cavity. However, due to the setting of the upper limiting structure, the second mounting cavity can be sealed, thereby preventing water from seeping into the thermostat and increasing the service life of the product. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of a traditional mounting component.

[0014] Figure 2 This is a schematic cross-section of the present invention. Figure 1 ;

[0015] Figure 3 This is a schematic cross-section of the mounting component and the corresponding molded filler of this utility model. Figure 2 ;

[0016] Figure 4 This is a schematic cross-section of the mounting component and the corresponding molded filler of this utility model. Figure 3 ;

[0017] Figure 5 This is a schematic cross-section of the mounting component of this utility model. Figure 2 ;

[0018] Figure 6 This is a schematic cross-section of the mounting component of this utility model. Figure 3 ;

[0019] Figure 7 This is a three-dimensional cross-sectional view of the present invention in use;

[0020] Figure 8 This is a cross-sectional schematic diagram of another embodiment of the mounting component of this utility model.

[0021] Figure label:

[0022] 1. Mounting component; 101. Mounting cavity; 102. Protrusion; 103. Recess;

[0023] 2 filling; 201 concave part; 202 convex part;

[0024] 3. Gaps; 4. Intervals; 5. Spacing;

[0025] 601 First step surface; 602 Boss portion; 603 Second step surface;

[0026] 701 First mounting cavity; 702 Second mounting cavity;

[0027] 8. Support body; 801. Mounting slot; 802. Heating element; 803. Thermostat;

[0028] 901 snap ring groove; 902 outer wall. Detailed Implementation

[0029] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0030] Referring to the accompanying drawings, the present invention adopts the following technical solution: a waterproof structure, including an installation component 1, wherein an installation cavity 101 is provided in the installation component 1, and a filler 2 is filled in the installation cavity 101. At least one protrusion 102 and a groove 103 are provided on the inner wall of the installation cavity 101. After the filler 2 is formed, a concave portion 201 or a protrusion 202 is formed on the outer wall of the filler 2 to fit the protrusion 102 or the groove 103. Since the materials of the installation component 1 and the filler 2 are different, a gap 3 is formed between the inner wall of the installation cavity 101 and the outer wall of the filler 2 during thermal expansion and contraction. The gap 3 is prevented from communicating with the outside of the installation component 1 through the opening of the installation cavity 101 by the protrusion 102 cooperating with the concave portion 201 and / or the groove 103 cooperating with the protrusion 202.

[0031] The inner wall of the mounting cavity 101 is provided with a first stepped surface 601, and the protrusion 102 or the groove 103 is disposed on the first stepped surface 601. In this embodiment, the protrusion 102 is disposed on the first stepped surface 601, so the groove 103 is naturally formed between the outer wall of the protrusion 102 and the inner wall of the mounting cavity 101. In other embodiments, the protrusion 102 is annular and disposed on the inner wall of the second mounting cavity 702, such as... Figure 4 As shown, when the mounting part 1 with this structure is used, after shrinkage, at least the annular protrusion 102 can not only limit the filler 2 to prevent it from moving axially and falling off, but also seal the gap 3 to prevent water seepage.

[0032] In this embodiment, the protrusion 102 and the groove 103 are annular. In other embodiments, such as Figure 5As shown, the protrusion 102 is a block with a fan-shaped cross-section, and several block-shaped protrusions 102 are arranged in a ring at intervals of 4; in other embodiments, the protrusion 102 may be a simple protrusion block, which will not be listed one by one.

[0033] In this embodiment, the first stepped surface 601 divides the mounting cavity 101 into a first mounting cavity 701 located on the outside and a second mounting cavity 702 located on the inside. The inner wall of the protrusion 102 is an extension of the inner wall of the second mounting cavity 702, such as... Figure 2 , 3 As shown. In other embodiments, such as Figure 6 As shown, the protrusion 102 can be disposed in the middle of the first step surface 601, that is, at a certain distance 5 from the inner wall of the second mounting cavity 702.

[0034] In this embodiment, at least one boss 602 is provided on the first stepped surface 601 and located on the inner wall of the mounting cavity 101, and the upper surface of the boss 602 forms a second stepped surface 603, such as... Figure 3 As shown.

[0035] like Figure 7 As shown, it also includes a support body 8, which has a mounting groove 801 for mounting the heating element 802. The mounting component 1 is integrally die-cast with the support body 8. The mounting component 1 is an aluminum die-casting. The filler 2 is epoxy resin.

[0036] A thermostat 803 is installed on the inner wall of the mounting cavity 101. The external temperature is transmitted to the thermostat 803 through the mounting component 1. The filling material 2 is poured into the mounting cavity 101 where the thermostat 803 is installed.

[0037] The filler 2 fills the mounting cavity 101.

[0038] In other implementations, such as Figure 8 As shown, the outer wall of the protrusion 102 can be provided with a retaining groove 901 inward, which can prevent the gap 3 from being too large during thermal expansion and contraction, causing the filler 2 to move axially out of the mounting cavity 101. Alternatively, the outer wall 902 of the protrusion 102 can be obliquely provided to form a limiting groove, which has the same limiting effect as the retaining groove 901.

[0039] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and adds a limiting structure. When thermal expansion and contraction occur, a gap 3 is generated between the filler 2 in the second mounting cavity 702 and the inner wall of the second mounting cavity 702. However, due to the setting of the limiting structure above, the second mounting cavity 702 can be sealed, thereby preventing water from seeping into the thermostat 803 and increasing the service life of the product.

[0040] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A waterproof structure, characterized in that: The device includes a mounting component (1), which has a mounting cavity (101) and is filled with a filler (2). The inner wall of the mounting cavity (101) is provided with at least one protrusion (102) and / or a groove (103). After the filler (2) is formed, the outer wall forms a recess (201) and / or a protrusion (202) that is adapted to the protrusion (102) or the groove (103). During thermal expansion and contraction, a gap (3) is formed between the inner wall of the mounting cavity (101) and the outer wall of the filler (2). The gap (3) is restricted from communicating with the outside of the mounting component (1) through the opening of the mounting cavity (101) by the protrusion (102) cooperating with the recess (201) and / or the groove (103) cooperating with the protrusion (202).

2. The waterproof structure according to claim 1, characterized in that: The inner wall of the mounting cavity (101) is provided with a first stepped surface (601), and the protrusion (102) or the groove (103) is disposed on the first stepped surface (601).

3. The waterproof structure according to claim 1, characterized in that: The protrusion (102) and / or the groove (103) are annular.

4. The waterproof structure according to claim 2, characterized in that: The first stepped surface (601) divides the mounting cavity (101) into a first mounting cavity (701) located on the outside and a second mounting cavity (702) located on the inside, with the inner wall of the protrusion (102) being an extension of the inner wall of the second mounting cavity (702).

5. The waterproof structure according to claim 4, characterized in that: At least one boss (602) is provided on the first step surface (601) and on the inner wall of the mounting cavity (101), and the upper surface of the boss (602) forms a second step surface (603).

6. The waterproof structure according to claim 1, characterized in that: It also includes a support body (8), on which a mounting groove (801) for installing an electric heating tube (802) is provided, and the mounting part (1) is integrally die-cast with the support body (8).

7. The waterproof structure according to claim 1 or 6, characterized in that: The mounting component (1) is an aluminum die-casting.

8. The waterproof structure according to claim 1 or 6, characterized in that: The filler (2) is epoxy resin.

9. The waterproof structure according to claim 1, characterized in that: A thermostat (803) is installed on the inner wall of the mounting cavity (101). The external temperature is transmitted to the thermostat (803) through the mounting component (1). The filling material (2) is poured into the mounting cavity (101) where the thermostat (803) is installed.

10. The waterproof structure according to claim 1, characterized in that: The filler (2) fills the mounting cavity (101).

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