CN220582766U

CN220582766U - Shell and cover plate sealing structure and PTC water heater assembly

Info

Publication number: CN220582766U
Application number: CN202321819990.2U
Authority: CN
Inventors: 鞠华光; 丁志强; 万伟伟; 孙雨; 王玮
Original assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Current assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Priority date: 2023-07-12
Filing date: 2023-07-12
Publication date: 2024-03-12
Anticipated expiration: 2033-07-12

Abstract

The utility model provides a shell and cover plate sealing structure and a PTC water heater assembly, which comprises a shell and a cover plate, wherein the shell and the cover plate are oppositely arranged, an annular groove extending around the edge of the shell is formed in the end face of the shell, an annular bulge is arranged at the edge of the cover plate and is clamped in the annular groove, an annular sealing gap is formed between the outer surface of the annular bulge and the inner wall of the annular groove, and sealing glue is filled in the sealing gap. The utility model can solve the problems that the glue coating amount of the sealing silica gel of the existing shell and cover plate sealing structure is difficult to control, the sealing silica gel is easy to overflow, dirt is caused, the sealing silica gel is required to be dried by using drying equipment, the gap between the shell and the cover plate cannot be fully filled, the sealing reliability is poor, the process is complex and the cost is high.

Description

Shell and cover plate sealing structure and PTC water heater assembly

Technical Field

The utility model relates to the technical field of sealing of a shell and a cover plate, in particular to a shell and cover plate sealing structure and a PTC water heater assembly.

Background

Unlike traditional fuel oil vehicle, new energy automobile has no engine, no waste heat heats the whole vehicle, and the battery pack needs to be heated to maintain the best performance under low temperature. PTC is used as a positive temperature coefficient semiconductor material, can generate heat by itself in an electrified state, has the advantages of high heating efficiency, high power, no open flame and the like, and becomes an important part on a new energy automobile after being manufactured into a heating device.

The sealing structure of the shell and the cover plate of the traditional PTC water heater assembly is usually that sealing silica gel is directly coated on the plane of the side wall of the shell, then the cover plate is connected with the shell by using a mounting screw, the gap between the shell and the cover plate is filled by flowing after the liquid sealing silica gel is extruded, and the sealing effect is achieved after the sealing silica gel is solidified.

However, this scheme seal silica gel rubber coating volume is difficult to control, and seal silica gel easily overflows, causes the dirty, and seal silica gel fills between casing and apron, need use drying equipment to dry, can't guarantee that casing and apron clearance are fully filled up, and seal reliability is poor, and the technology is complicated, and is with high costs.

Accordingly, there is a need to provide a new housing and cover sealing structure and PTC water heater assembly that avoids the above-described technical problems.

Disclosure of Invention

The utility model aims to provide a shell and cover plate sealing structure and a PTC water heater assembly, which are used for solving the problems that the gluing amount of sealing silica gel of the existing shell and cover plate sealing structure is difficult to control, the sealing silica gel is easy to overflow and causes dirt, the sealing silica gel is required to be dried by using drying equipment, the gap between the shell and the cover plate cannot be fully filled, the sealing reliability is poor, the process is complex and the cost is high.

In order to solve the technical problems, the utility model provides a sealing structure of a shell and a cover plate, which comprises the shell and the cover plate, wherein the shell and the cover plate are oppositely arranged, an annular groove extending around the edge of the shell is formed in the end face of the shell, an annular bulge is arranged at the edge of the cover plate and is clamped in the annular groove, an annular sealing gap is formed between the outer surface of the annular bulge and the inner wall of the annular groove, and sealing glue is filled in the sealing gap.

Optionally, an interference assembly is further included that causes an inner sidewall of the annular groove to be in interference fit with the annular protrusion.

Optionally, the interference component includes a mating protrusion, where the mating protrusion is disposed on a side wall of an inner side of the annular groove and faces an inner side of the annular protrusion, or on a side of an inner side of the annular protrusion and faces a side wall of the annular groove.

Optionally, the interference assembly further includes a mating groove, and the mating groove and the mating protrusion cooperate to form a buckle.

Optionally, the height of the mating protrusion is 0.3mm.

Optionally, the width of the sealing gap is 2mm.

Optionally, the free end of the annular protrusion is spaced from the bottom of the annular groove by a distance of 0.5mm.

Optionally, the annular protrusion is a flange integrally formed with the cover plate.

The utility model also provides a PTC water heater assembly which is characterized by comprising a PTC heating bag and the sealing structure of the shell and the cover plate, wherein the PTC heating bag is arranged in a sealing cavity formed by the shell and the cover plate.

The shell and cover plate sealing structure and the PTC water heater assembly provided by the utility model have the following beneficial effects:

the annular groove extending around the edge of the annular groove is formed in the end face of the shell, the annular bulge is arranged at the edge of the cover plate and is clamped in the annular groove, an annular sealing gap is formed between the outer surface of the annular bulge and the inner wall of the annular groove, and sealing glue is filled in the sealing gap, so that the quantity of the sealing glue flowing into the annular groove is controllable, dirt is not formed due to overflow, the process of filling the glue is simple and low in cost, the glue can be uniformly filled, the sealing performance can be improved, and in addition, the sealing performance can be improved, because the annular sealing gap is formed between the outer surface of the annular bulge and the inner wall of the annular groove, after the glue is filled in the annular groove, the glue can be naturally air-dried without drying, and the process can be further simplified.

Drawings

FIG. 1 is a schematic perspective view of a sealing structure of a housing and a cover plate according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a housing and cover seal arrangement in accordance with an embodiment of the present utility model;

FIG. 3 is a top view of a housing in an embodiment of the utility model;

FIG. 4 is a cross-sectional view of the housing of FIG. 3 taken along the direction A-A;

FIG. 5 is a top view of a cover plate in an embodiment of the utility model;

FIG. 6 is a schematic perspective view of a cover plate according to an embodiment of the present utility model;

fig. 7 is an enlarged partial schematic view of fig. 5.

The attached sign indicates:

100-a housing; 200-cover plate;

500-an annular groove; 600-annular protrusions; 610-mating projections; 700-sealing glue; 800-sealing the gap.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, fig. 1 is a schematic perspective view of a sealing structure of a housing and a cover plate according to an embodiment of the present utility model, fig. 2 is a cross-sectional view of a sealing structure of a housing and a cover plate according to an embodiment of the present utility model, fig. 3 is a top view of a housing 100 according to an embodiment of the present utility model, fig. 4 is a cross-sectional view of a housing 100 according to A-A direction in fig. 3, fig. 5 is a top view of a cover plate 200 according to an embodiment of the present utility model, fig. 6 is a schematic perspective view of a cover plate 200 according to an embodiment of the present utility model, fig. 7 is a partially enlarged schematic view of fig. 5, a sealing structure of a housing and a cover plate according to an embodiment of the present utility model is provided, including a housing 100 and a cover plate 200, wherein the housing 100 and the cover plate 200 are disposed opposite to each other, an annular groove 500 extending around an edge of the housing 100 is disposed at an edge of the housing 100, the annular protrusion 600 is disposed at an edge of the cover plate, the annular protrusion 600 is engaged in the annular groove 500, and an annular sealing gap 800 is formed between an outer surface of the annular protrusion 600 and an inner wall of the annular groove 500, and the annular sealing gap 800 is filled in the sealing gap 800.

By providing the end surface of the housing 100 with the annular groove 500 extending around the edge thereof, the edge of the cover plate 200 is provided with the annular protrusion 600, the annular protrusion 600 is clamped in the annular groove 500, an annular sealing gap 800 is formed between the outer surface of the annular protrusion 600 and the inner wall of the annular groove 500, and the sealing gap 800 is filled with the sealing glue 700, so that the amount of the sealing glue 700 flowing into the annular groove 500 is controllable, dirt is not overflowed, the process of filling the glue is simple, the cost is low, the glue can be uniformly filled, and the sealing performance can be improved.

In this embodiment, the annular groove 500 is adapted to the shape of the annular protrusion 600.

Further, the annular protrusion 600 is in interference fit with the inner sidewall of the annular groove 500. In this way, the cover plate 200 may be fixed on the housing 100, so as to avoid shaking of the cover plate 200 relative to the housing 100, and influence the sealing effect of the sealing glue 700, and i may have interference fit to realize connection between the cover plate 200 and the housing 100, without using screws to connect the housing 100 and the cover plate 200, and thus, the process of connecting the cover plate 200 and the housing 100 may be simplified.

Specifically, the sealing structure of the housing and the cover plate further has an interference component that makes the inner side wall of the annular groove 500 and the annular protrusion 600 in interference fit, where the interference component includes a fitting protrusion 610, and the fitting protrusion 610 is disposed on a side wall of the inner side of the annular groove 500 and faces the inner side of the annular protrusion 600, or on a side of the inner side of the annular protrusion 600 and faces the side wall of the annular groove 500.

In this embodiment, the fitting protrusion 610 is provided on a side of the inner side of the annular protrusion 600 facing the sidewall of the annular groove 500.

The interference assembly also includes a mating groove that cooperates with the mating protrusion 610 to form a snap fit. In this way, the stability of the connection of the cover 200 to the housing 100 can be further improved.

Referring to fig. 2, the width of the sealing gap 800 is 2mm.

Referring to fig. 2, the free end of the annular protrusion 600 is spaced from the bottom of the annular groove 500 by a distance of 0.5mm, so that the sealing glue 700 is conveniently filled between the annular protrusion 600 and the inner sidewall of the annular groove 500, further improving the sealing performance.

Referring to fig. 7, the height of the fitting protrusion 610 is 0.3mm.

Referring to fig. 2, in this embodiment, the annular protrusion 600 is a flange integrally formed with the cover 200, so that the structure can be simplified and the cost can be reduced.

The process of sealing the cover 200 to the housing 100 in this embodiment is as follows:

first, the cover plate 200 is put on the housing 100, and the annular protrusion 600 is interference-fitted with the sidewall of the annular groove 500 to be fixedly coupled together.

Secondly, the shell 100 and the cover plate 200 which are well installed and fixed are horizontally placed on a gluing platform, the gluing amount is well fixed, the sealing glue 700 is evenly filled along the track of the annular groove 500 through the filling gap, the sealing glue 700 can fill the gap between the shell 100 and the cover plate 200 under the action of no external force, the sealing glue 700 is exposed outside, no drying equipment is needed, and the sealing glue 700 can be solidified after natural air drying.

Finally, the solidified sealing glue 700 connects the housing 100 and the cover plate 200 together, ensures stable installation, and simultaneously completes sealing between the housing 100 and the cover plate 200.

In this embodiment, the sealing glue 700 may be liquid silica gel.

In this embodiment, the housing 100 may be a housing of the PTC water heater assembly, and the cover 200 may be a cover of the PTC water heater assembly.

The embodiment also provides a PTC water heater assembly, which comprises a PTC heating bag and the sealing structure of the shell and the cover plate, wherein the PTC heating bag is arranged in a sealing cavity formed by the shell and the cover plate.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. The utility model provides a casing and apron seal structure, includes casing and apron, the casing with the apron sets up relatively, its characterized in that, set up on the terminal surface of casing around its border extension's annular groove, the border department of apron is provided with annular bulge, annular bulge joint in the annular groove, just form annular seal clearance between annular bulge's surface and the inner wall of annular groove, in seal clearance intussuseption packing seal glue.

2. The housing and cover seal arrangement of claim 1 further comprising an interference assembly for interference fitting an inner sidewall of said annular groove with said annular projection.

3. The housing and cover seal arrangement of claim 2 wherein the interference assembly includes a mating protrusion disposed on a side wall of the inner side of the annular groove and facing the inner side of the annular protrusion or on a side of the inner side of the annular protrusion and facing the side wall of the annular groove.

4. The housing and cover seal arrangement of claim 3 wherein said interference assembly further comprises a mating groove, said mating groove cooperating with said mating protrusion to form a snap fit.

5. A housing and cover seal arrangement as claimed in claim 3 wherein the mating projection has a height of 0.3mm.

6. The housing and cover sealing arrangement of claim 1 wherein the width of the sealing gap is 2mm.

7. The housing and cover seal arrangement of claim 1 wherein the free end of the annular projection is spaced from the bottom of the annular recess by a distance of 0.5mm.

8. The housing and cover seal arrangement of claim 1 wherein said annular projection is a flange integrally formed with said cover.

9. A PTC water heater assembly comprising a PTC heating pack and a housing and cover sealing arrangement as claimed in any one of claims 1 to 8, the PTC heating pack being disposed within a sealed cavity formed by the housing and cover.