Electric appliance shell and electric appliance

Abstract

The utility model discloses an electric appliance shell, which comprises a first shell, a second shell and a cavity formed by assembling the first shell and the second shell and used for accommodating an electric component, and an assembling gap of the first shell and the second shell is sealed by a sealing structure formed by matching the first shell and the second shell. The sealing structure comprises a first sealing rib and a first sealing groove which are arranged on the first shell, and a second sealing rib and a second sealing groove which are arranged on the second shell; the first sealing rib is matched with the second sealing groove in an inserted mode, and the first sealing groove is matched with the second sealing rib in an inserted mode; one side of the first sealing rib and one side of the second sealing rib are in interference fit to form a first side sealing part; the other side of the first sealing rib and the second sealing groove are in relative close contact through interference fit of the first sealing rib and the second sealing rib to form a second side sealing part. The other side of the second sealing rib is in relative close contact with the first sealing groove through the interference fit of the first sealing rib and the second sealing rib to form a third side sealing part; the first side sealing part is located between the second side sealing part and the third side sealing part. In addition, the utility model further discloses an electric appliance adopting the electric appliance shell.

Description

[Technical field]

[0001] The utility model relates to the technical field of electrical appliances, in particular to an electrical appliance housing and an electrical appliance. [Background technology]

[0002] With the development of technology, consumers are exposed to more and more types of electrical appliances, and their functions are becoming more and more powerful. During use, electrical appliance components are often contained in an electrical appliance housing to protect the internal electrical appliance components. The existing electrical appliance housing includes a first housing and a second housing. In order to prevent water from entering the electrical appliance housing through the assembly gap between the first housing and the second housing and damaging the electrical appliance components, the following three solutions are usually adopted:

[0003] The first solution: waterproofing is achieved by applying glue or placing sealants (such as silicone, asbestos pads) at the assembly of the first shell and the second shell. With this design, whether it is installing sealants or applying glue, there is an extra process in assembly, which not only requires additional machines or equipment to assist, but also makes assembly more time-consuming, seriously affecting the overall assembly efficiency; in addition, the sealant itself is expensive, and the sealant can easily stretch the electrical housing, resulting in a large assembly gap between the electrical housings, thereby affecting the product appearance; finally, this method has high requirements on the rigidity of the electrical housing;

[0004] The second solution is to connect the first shell and the second shell by ultrasonic welding or friction welding to achieve airtight waterproofing. However, this design makes it impossible to disassemble or rework the electrical shell after welding, making maintenance difficult. In addition, the equipment debugging is cumbersome, which increases the waterproofing cost in disguise.

[0005] The third solution: one of the first shell and the second shell is provided with a sealing groove, and the other is provided with a sealing rib, which is inserted into the sealing groove. In order to facilitate the insertion of the sealing rib into the sealing groove, there is still a small gap between the side of the sealing rib and the corresponding side wall of the sealing groove. As a result, it can only prevent splashing water, so the waterproof performance is limited.

[0006] Therefore, there is an urgent need for an electrical appliance housing and an electrical appliance that is easy to disassemble and assemble, has good waterproof performance and is low in cost to solve the above problems. [Contents of the utility model]

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an electrical appliance housing and an electrical appliance, which can achieve a higher waterproof level without using conventional sealing means such as seals, gluing, welding, etc., and has the characteristics of convenient disassembly and assembly and low cost.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] An electrical appliance housing comprises a first housing, a second housing and a cavity formed by assembling the first housing and the second housing for accommodating electrical components, wherein an assembly gap between the first housing and the second housing is sealed by a sealing structure formed by the cooperation of the first housing and the second housing, and the sealing structure comprises:

[0010] A first sealing rib and a first sealing groove provided on the first shell, and a second sealing rib and a second sealing groove provided on the second shell;

[0011] The first sealing rib is plugged into the second sealing groove, and the first sealing groove is plugged into the second sealing rib;

[0012] One side of the first sealing rib and one side of the second sealing rib are interference-fitted to form a first side sealing portion;

[0013] The other side of the first sealing rib and the second sealing groove are relatively close to each other through the interference fit of the first sealing rib and the second sealing rib to form a second side sealing portion;

[0014] The other side of the second sealing rib is relatively close to the first sealing groove through the interference fit of the first sealing rib and the second sealing rib to form a third side sealing portion;

[0015] The first side seal portion is located between the second side seal portion and the third side seal portion.

[0016] In the above-mentioned electrical appliance housing, the first side sealing portion formed by the interference fit between one side of the first sealing rib and one side of the second sealing rib is a surface contact seal or a line contact seal.

[0017] In the above-mentioned electrical appliance housing, the second side sealing portion formed by the other side of the first sealing rib being relatively close to and in contact with the second sealing groove is a surface contact seal or a line contact seal.

[0018] In the above-mentioned electrical appliance housing, the third side sealing portion formed by the other side of the second sealing rib being relatively close to and in contact with the first sealing groove is a surface contact seal or a line contact seal.

[0019] In the above-mentioned electrical appliance housing, the first sealing rib cooperates with the bottom of the second sealing groove to form a first bottom sealing portion; and / or the second sealing rib cooperates with the bottom of the first sealing groove to form a second bottom sealing portion.

[0020] In the above-mentioned electrical appliance housing, the second housing includes an outer barrier rib spaced apart on the outside of the second sealing rib, the second sealing groove is formed between the second sealing rib and the outer barrier rib, the outer side surface of the first sealing rib contacts the inner side surface of the outer barrier rib to form the second side sealing portion, the height of the second sealing rib protruding from the bottom of the second sealing groove is H1, and the height of the outer barrier rib protruding from the bottom of the second sealing groove is H2, satisfying H1>H2.

[0021] In the above-mentioned electrical appliance housing, the first housing includes an inner barrier rib spaced inside the first sealing rib, the first sealing groove is formed between the inner barrier rib and the first sealing rib, the height of the inner barrier rib protruding from the bottom of the first sealing groove is H3, and the height of the first sealing rib protruding from the bottom of the first sealing groove is H4, satisfying H3>H4.

[0022] In the above-mentioned electrical appliance housing, the second housing includes an outer barrier rib spaced apart on the outside of the second sealing rib, the second sealing groove is formed between the second sealing rib and the outer barrier rib, the first housing includes an inner barrier rib spaced apart on the inside of the first sealing rib and a notch groove spaced apart on the outside of the first sealing rib, the first sealing groove is formed between the inner barrier rib and the first sealing rib, the top surface of the outer barrier rib is parallel to the bottom surface of the notch groove, the thickness of the first housing is W,

[0023] The height of the first sealing rib protruding from the bottom of the notch groove is h1, and the height of the inner retaining rib protruding from the bottom of the notch groove is h2, which satisfies 5 / 36≤h1 / W≤ / 15 / 36, h1 / W≤h2 / W≤ / 15 / 36;

[0024] The height of the second sealing rib protruding from the bottom of the second sealing groove is H1, and the height of the outer blocking rib protruding from the bottom of the second sealing groove is H2, satisfying 5 / 36≤H2 / W≤ / 15 / 36, H2 / W≤H1 / W≤ / 15 / 36.

[0025] In the above-mentioned electrical appliance housing, a chamfer is provided between one side of the first sealing rib and the end surface of the first sealing rib.

[0026] In the above-mentioned electrical appliance housing, the inner side surface of the second sealing rib includes an avoidance section and a mating section. The avoidance section is inserted into the first sealing groove before the mating section. There is an avoidance gap between the avoidance section and the side wall corresponding to the first sealing groove. The mating section contacts the first sealing groove to form the third side sealing portion.

[0027] In the above-mentioned electrical appliance housing, the inner side surface of the second sealing rib also includes a transition section connected between the avoidance section and the mating section, the avoidance section, the transition section and the mating section are inclined toward the same side, and the inclination angle of the avoidance section is between the inclination angle of the mating section and the inclination angle of the transition section.

[0028] In the above-mentioned electrical appliance housing, the other side of the first sealing rib contacts the second sealing groove and is interference-fitted to form the second side sealing portion, and the other side of the second sealing rib contacts the first sealing groove and is interference-fitted to form the third side sealing portion.

[0029] In the above-mentioned electrical appliance housing, the two sides of the first sealing rib are inclined in opposite directions so that the distance between the two side surfaces of the first sealing rib gradually increases toward the bottom of the first sealing groove, and the two sides of the second sealing rib are inclined in opposite directions so that the distance between the two side surfaces of the second sealing rib gradually increases toward the bottom of the second sealing groove, and one side of the second sealing rib matches one side of the first sealing rib.

[0030] The utility model also provides an electrical appliance, comprising an electrical appliance housing and electrical components, wherein the electrical appliance housing comprises a cavity, the electrical components are installed in the cavity, and the electrical appliance housing adopts the electrical appliance housing described in any of the above technical solutions.

[0031] Beneficial effects of the utility model:

[0032] 1. When the first shell and the second shell in the utility model are assembled, the interference fit of the first sealing rib and the second sealing rib can make one side of the first sealing rib and one side of the second sealing rib come into close contact to form a first side sealing portion; in addition, during the interference fit of the first sealing rib and the second sealing rib, the deformation of the first sealing rib and / or the second sealing rib, or even the pulling deformation of the shell, can be used to eliminate the assembly gap between the other side of the first sealing rib and the second sealing groove, so that the other side of the first sealing rib and the second sealing groove are relatively close to each other to form the second side sealing portion, and the assembly gap between the other side of the second sealing rib and the corresponding side wall of the first sealing groove is eliminated, so that the other side of the second sealing rib and the first sealing groove are relatively close to each other to form a third side sealing portion, thereby ensuring that the other side of the first sealing rib and the corresponding side wall of the second sealing groove are relatively close to each other. The sealing performance between the side walls, and between the other side of the second sealing rib and the side wall corresponding to the first sealing groove, plus the first side sealing portion is located between the second side sealing portion and the third side sealing portion, so that at least three layers of side sealing from the inside to the outside can be achieved. The layered blocking of the multiple side sealing portions can prevent or delay the continued infiltration of water, so the waterproof performance is better and the reliability is higher. The sealing performance can be close to the waterproof level achieved by means of gluing, sealing, welding and other means, and can be used for flushing. This allows the electrical housing to achieve a higher waterproof level without using conventional sealing means such as sealing, gluing, welding, etc., saving material and assembly costs, and also enables the electrical housing to be repeatedly disassembled and assembled, with strong rework convenience and maintainability; finally, it can also ensure the aesthetics of the joint between the first shell and the second shell, and reduce the rigidity requirements for the first shell and the second shell.

[0033] 2. The first sealing rib cooperates with the bottom of the second sealing groove to form a first bottom sealing portion; and / or the second sealing rib cooperates with the bottom of the first sealing groove to form a second bottom sealing portion. With such a design, four or five layers of sealing can be achieved to further improve the waterproof level of the sealing structure.

[0034] 3. The second shell includes an outer rib arranged at intervals outside the second sealing rib, a second sealing groove is formed between the second sealing rib and the outer rib, the outer side surface of the first sealing rib contacts the inner side surface of the outer rib to form a second side sealing portion, the height of the second sealing rib protruding from the bottom of the second sealing groove is H1, and the height of the outer rib protruding from the bottom of the second sealing groove is H2, satisfying H1>H2. With such a design, when the second sealing groove is at the bottom, the second sealing rib can protrude from the outer rib, so that the water level in the second sealing groove is not higher than the outer rib, and also not higher than the second sealing rib, thereby preventing water from entering the first sealing groove; in addition, the interference fit contact area between the second sealing rib and the first sealing rib can be increased, thereby increasing the sealing reliability of the first side sealing portion; finally, when the first shell and the second shell are assembled, the second sealing rib can be inserted into the corresponding sealing groove before the first sealing rib, so as to guide the subsequent insertion of the first sealing rib, thereby facilitating the insertion and fit of the first sealing rib and the second sealing groove.

[0035] 4. The first housing includes an inner retaining rib arranged at intervals inside the first sealing rib, a first sealing groove is formed between the inner retaining rib and the first sealing rib, the height of the inner retaining rib protruding from the bottom of the first sealing groove is H3, and the height of the first sealing rib protruding from the bottom of the first sealing groove is H4, satisfying H3>H4. With such a design, when the first sealing groove is at the bottom, the inner retaining rib can protrude from the first sealing rib, so that the water level in the first sealing groove is not higher than the first sealing rib, and also not higher than the inner retaining rib, thereby preventing water from entering the electrical housing; in addition, the sealing reliability of the third side sealing part can also be increased; finally, when the first housing and the second housing are assembled, the inner retaining rib can be used to guide the second sealing rib to be smoothly inserted into the first sealing groove, so as to reduce the difficulty of aligning the first housing and the second housing, thereby reducing the difficulty of assembling the electrical housing.

[0036] 5. The second shell includes an outer rib spaced apart on the outside of the second sealing rib, a second sealing groove is formed between the second sealing rib and the outer rib, the first shell includes an inner rib spaced apart on the inside of the first sealing rib and a notch groove is formed outside the first sealing rib, a first sealing groove is formed between the inner rib and the first sealing rib, the top surface of the outer rib is parallel to the bottom surface of the notch groove, the thickness of the first shell is W,

[0037] The height of the first sealing rib protruding from the bottom of the notch groove is h1, and the height of the inner retaining rib protruding from the bottom of the notch groove is h2, satisfying 5 / 36≤h1 / W≤ / 15 / 36, h1 / W≤h2 / W≤ / 15 / 36; such a design can not only avoid the first sealing rib and the inner retaining rib protruding too low to cause poor side sealing effect, but also facilitate the processing of the first sealing rib and the inner retaining rib and ensure the size of the two, thereby ensuring the sealing effect of the sealing structure;

[0038] The height of the second sealing rib protruding from the bottom of the second sealing groove is H1, and the height of the outer retaining rib protruding from the bottom of the second sealing groove is H2, satisfying 5 / 36≤H2 / W≤ / 15 / 36, H2 / W≤H1 / W≤ / 15 / 36. Such a design can not only avoid the second sealing rib and the outer retaining rib protruding too low to cause poor side sealing effect, but also facilitate the processing of the second sealing rib and the outer retaining rib and ensure the size of the two, thereby ensuring the sealing effect of the sealing structure.

[0039] 6. A chamfer is provided between one side of the first sealing rib and the end face of the first sealing rib. With this design, even if the second sealing rib has normal production size fluctuations, the chamfer can guide the second sealing rib to be smoothly inserted into the first sealing groove, reducing the difficulty of assembling the electrical housing.

[0040] 7. The inner side of the second sealing rib includes an avoidance section and a matching section. The avoidance section is inserted into the first sealing groove before the matching section. There is an avoidance gap between the avoidance section and the side wall corresponding to the first sealing groove. The matching section contacts the first sealing groove to form a third side sealing portion. Such a design can not only further facilitate the smooth insertion of the second sealing rib into the first sealing groove through the design of the avoidance section, but also reduce the contact area between the second sealing rib and the side wall of the first sealing groove, so as to reduce the friction resistance encountered by the second sealing rib when inserted into the first sealing groove, thereby making the assembly of the electrical housing more labor-saving; finally, by designing the matching section to contact the first sealing groove to form the third side sealing portion, the sealing performance between the other side of the second sealing rib and the side wall corresponding to the first sealing groove can also be guaranteed.

[0041] 8. The inner side surface of the second sealing rib also includes a transition section connected between the avoidance section and the matching section. The avoidance section, the transition section and the matching section are inclined toward the same side, and the inclination angle of the avoidance section is between the inclination angles of the matching section and the transition section. Such a design can ensure the avoidance effect of the avoidance section and the guiding effect of the corresponding side wall of the first sealing groove on the second sealing rib, so that the second sealing rib can be inserted into the first sealing groove more smoothly.

[0042] 9. The other side of the first sealing rib contacts and interferes with the second sealing groove to form a second side sealing portion, and the other side of the second sealing rib contacts and interferes with the first sealing groove to form a third side sealing portion. Such a design can not only improve the sealing performance of the second side sealing portion and the third side sealing portion, but also improve the plug-in reliability of the first sealing rib and the second sealing groove, and the plug-in reliability of the second sealing rib and the first sealing groove through the interference fit between the first sealing rib and the second sealing groove, and the interference fit between the second sealing rib and the first sealing groove, thereby increasing the assembly reliability of the first shell and the second shell.

[0043] 10. The two sides of the first sealing rib are inclined in opposite directions so that the distance between the two sides of the first sealing rib gradually increases toward the bottom of the first sealing groove. The two sides of the second sealing rib are inclined in opposite directions so that the distance between the two sides of the second sealing rib gradually increases toward the bottom of the second sealing groove. One side of the second sealing rib matches one side of the first sealing rib. With such a design, even if there are errors in the sizes of the first sealing rib and the second sealing rib due to production, the first shell and the second shell can be smoothly assembled under the guidance of the inclined surface, thereby reducing the requirements for the size processing accuracy of both the first shell and the second shell.

Brief Description of the Drawings

[0044] The utility model is further described below in conjunction with the accompanying drawings:

[0045] Figure 1 This is a schematic diagram of the assembly structure of the electrical appliance housing in the first embodiment of the present utility model;

[0046] Figure 2 It is an assembly cross-sectional view of the electrical appliance housing in the width direction in the first embodiment of the utility model;

[0047] Figure 3 It is a cross-sectional view of the first shell in the first embodiment of the utility model;

[0048] Figure 4 for Figure 3 A is a partial enlarged schematic diagram;

[0049] Figure 5 It is a cross-sectional view of the second housing in the first embodiment of the present utility model;

[0050] Figure 6 for Figure 5 A partial enlarged schematic diagram of B in the middle;

[0051] Figure 7 This is an exploded cross-sectional view of the electrical appliance housing in the first embodiment of the present utility model;

[0052] Figure 8 for Figure 7 A partial enlargement of C in the middle Figure 1 ;

[0053] Fig. 9 for Figure 7 A partial enlargement of C in the middle Figure 2 ;

[0054] Reference numerals:

[0055] 100, first shell; 110, inner retaining rib; 111, inner side surface of inner retaining rib; 112, outer side surface of inner retaining rib; 120, notch groove; 200, second shell; 210, outer retaining rib; 211, outer side surface of outer retaining rib; 212, inner side surface of outer retaining rib; 300, cavity; 400, sealing structure; 410, first sealing rib; 411, inner side surface of first sealing rib; 412, outer side surface of first sealing rib; 413, chamfer; 420, first sealing groove; 430, second sealing rib; 431, inner side surface of second sealing rib; 4311, avoidance section; 4312, matching section; 4313, transition section; 432, outer side surface of second sealing rib; 440, second sealing groove; 500, first side sealing portion; 600, second side sealing portion; 700, third side sealing portion; 800, first bottom sealing portion; 900, second bottom sealing portion. [Specific implementation method]

[0056] The utility model provides an electrical appliance housing, comprising a first housing, a second housing and a cavity formed by assembling the first housing and the second housing for accommodating electrical components, wherein an assembly gap between the first housing and the second housing is sealed by a sealing structure formed by the cooperation of the first housing and the second housing, wherein the sealing structure comprises: a first sealing rib and a first sealing groove provided on the first housing, and a second sealing rib and a second sealing groove provided on the second housing;

[0057] The first sealing rib is plugged into the second sealing groove, and the first sealing groove is plugged into the second sealing rib;

[0058] One side of the first sealing rib and one side of the second sealing rib are interference-fitted to form a first side sealing portion;

[0059] The other side of the first sealing rib and the second sealing groove are relatively close to each other through the interference fit of the first sealing rib and the second sealing rib to form a second side sealing portion;

[0060] The other side of the second sealing rib is relatively close to the first sealing groove through the interference fit of the first sealing rib and the second sealing rib to form a third side sealing portion;

[0061] The first side seal portion is located between the second side seal portion and the third side seal portion.

[0062] When the first shell and the second shell in the utility model are assembled, the interference fit of the first sealing rib and the second sealing rib can make one side of the first sealing rib and one side of the second sealing rib come into close contact to form a first side sealing portion; in addition, in the process of interference fit of the first sealing rib and the second sealing rib, the deformation of the first sealing rib and / or the second sealing rib, or even the pulling deformation of the shell, can be used to eliminate the assembly gap between the other side of the first sealing rib and the corresponding side wall of the second sealing groove, so that the other side of the first sealing rib and the second sealing groove are relatively close to each other to form the second side sealing portion, and the assembly gap between the other side of the second sealing rib and the corresponding side wall of the first sealing groove can be eliminated, so that the other side of the second sealing rib and the first sealing groove are relatively close to each other to form the third side sealing portion, thereby ensuring that the other side of the first sealing rib is relatively close to the second sealing groove The sealing performance between the side walls, and between the other side of the second sealing rib and the side wall corresponding to the first sealing groove, plus the first side sealing part is located between the second side sealing part and the third side sealing part, so that at least three layers of side sealing from the inside to the outside can be achieved. The layered blocking of the multi-layer side sealing parts can prevent or delay the continued infiltration of water, so the waterproof performance is better and the reliability is higher, and its sealing performance can be close to the waterproof level achieved by means of gluing, sealing, welding and other means, and can be used for flushing. This makes it possible for the electrical housing to achieve a higher waterproof level without using conventional sealing means such as sealing, gluing, welding, etc., saving material and assembly costs, and also enables the electrical housing to be repeatedly disassembled and assembled, with strong rework convenience and maintainability; finally, it can also ensure the aesthetics of the joint between the first shell and the second shell, and reduce the rigidity requirements for the first shell and the second shell.

[0063] The technical scheme of the embodiment of the utility model is explained and illustrated below in conjunction with the drawings of the embodiment of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work all belong to the protection scope of the utility model. In addition, it should be understood that the following words indicating orientation or position relationship such as "up", "down", "left", "right", "longitudinal", "lateral", "inside", "outside", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0064] Embodiment 1

[0065] like Figures 1 to 9As shown, the electrical housing in this embodiment includes a first housing 100 and a second housing 200, the first housing 100 and the second housing 200 are assembled to form a cavity 300 for accommodating electrical components (not shown in the figure), and the assembly gap between the first housing 100 and the second housing 200 is sealed by a sealing structure 400 formed by the cooperation of the two, and the sealing structure 400 includes: a first sealing rib 410 and a first sealing groove 420 provided on the first housing 100, and a second sealing rib 430 and a second sealing groove 440 provided on the second housing 200, wherein the first sealing rib 410 is plugged into the second sealing groove 440, and the first sealing groove 420 is plugged into the second sealing groove 420. 0 is plugged into and matched with the second sealing rib 430, and one side of the first sealing rib 410 and one side of the second sealing rib 430 are interference fit to form a first side sealing portion 500; the other side of the first sealing rib 410 and the second sealing groove 440 are relatively close to each other through the interference fit of the first sealing rib 410 and the second sealing rib 430 to form a second side sealing portion 600; the other side of the second sealing rib 430 and the first sealing groove 420 are relatively close to each other through the interference fit of the first sealing rib 410 and the second sealing rib 430 to form a third side sealing portion 700, and the first side sealing portion 500 is located between the second side sealing portion 600 and the third side sealing portion 700.

[0066] In this embodiment, the first sealing rib 410 and the first shell 100 are integrally injection-molded plastic parts, the second sealing rib 430 and the second shell 200 are integrally injection-molded plastic parts, the first sealing rib 410 and the first sealing groove 420 are both continuously arranged along the circumference of the first shell 100, and the second sealing rib 430 and the second sealing groove 440 are continuously arranged along the circumference of the second shell 200. At this time, the wire outlet hole on the electrical shell is separately arranged on the first shell 100 or the second shell 200.

[0067] When the first shell 100 and the second shell 200 are assembled, the first sealing rib 410 and the second sealing rib 430 always maintain an interference fit, and when the first sealing rib 410 begins to be inserted into the second sealing groove 440, there is an assembly gap between the other side of the first sealing rib 410 (i.e., the side away from the second sealing rib 430) and the side wall corresponding to the second sealing groove 440, and when the second sealing rib 430 begins to be inserted into the first sealing groove 420, there is an assembly gap between the other side of the second sealing rib 430 (i.e., the side away from the first sealing rib 410) and the side wall corresponding to the first sealing groove 420. During the assembly process of the first shell 100 and the second shell 200, the existence of the assembly gap can In order to facilitate the smooth initial insertion of the first sealing rib 410 into the second sealing groove 440 and the smooth initial insertion of the second sealing rib 430 into the first sealing groove 420, through the interference fit of the first sealing rib 410 and the second sealing rib 430, one side of the first sealing rib 410 can be in close contact with one side of the second sealing rib 430 to form a first side sealing portion 500; in addition, during the interference fit of the first sealing rib 410 and the second sealing rib 430, as the insertion depth increases, the deformation of the first sealing rib 410 and / or the second sealing rib 430, or even the pulling deformation of the shell, can be used to eliminate the other side of the first sealing rib 410 and the corresponding side of the second sealing groove 440. The assembly gap between the walls is eliminated, so that the other side of the first sealing rib 410 and the second sealing groove 440 are relatively close to each other to form a second side sealing portion 600, and the assembly gap between the other side of the second sealing rib 430 and the corresponding side wall of the first sealing groove 420 is eliminated, so that the other side of the second sealing rib 430 and the first sealing groove 420 are relatively close to each other to form a third side sealing portion 700, thereby ensuring the sealing performance between the other side of the first sealing rib 410 and the corresponding side wall of the second sealing groove 440, and between the other side of the second sealing rib 430 and the corresponding side wall of the first sealing groove 420. In addition, the first side sealing portion 500 is located between the second side sealing portion 600 and the third side sealing portion 700. Therefore, at least three layers of side sealing from the inside to the outside can be achieved. The layers of blocking by the multi-layer side sealing parts can prevent or delay the continued infiltration of water, so the waterproof performance is better and the reliability is higher. Its sealing performance is close to the waterproof level achieved by means of gluing, sealing, welding and the like, and can be used for flushing. This allows the electrical housing to achieve a higher waterproof level without using conventional sealing means such as sealing, gluing, welding, etc., saving material and assembly costs, while also allowing the electrical housing to be repeatedly disassembled and assembled, with strong rework convenience and maintainability. Finally, it can also ensure the aesthetics of the joint between the first housing 100 and the second housing 200, and reduce the rigidity requirements for the first housing 100 and the second housing 200.

[0068] Specifically, the first shell 100 in this embodiment includes an inner barrier rib 110 arranged at intervals on the inner side of the first sealing rib 410 and a notch groove 120 arranged on the outer side of the first sealing rib 410, the side wall of the notch groove 120 forms the outer side surface 412 of the first sealing rib, the inner side surface 111 of the inner barrier rib forms a part of the cavity wall of the cavity 300, and the first sealing groove 420 is formed between the inner barrier rib 110 and the first sealing rib 410, that is, the inner barrier rib 110 and the first sealing rib 410 respectively form the two side walls of the first sealing groove 420; and the second shell 200 includes an outer barrier rib 210 arranged at intervals on the outer side of the second sealing rib 430, the inner side surface 431 of the second sealing rib forms a part of the cavity wall of the cavity 300, and the outer side surface 211 of the outer barrier rib forms a part of the surface of the second shell 200, and the second sealing groove 440 is formed between the second sealing rib 430 and the outer barrier rib 210, that is, the second sealing rib 430 and the outer barrier rib 210 respectively form the two side walls of the second sealing groove 440. When the first shell 100 and the second shell 200 are assembled, one side of the first sealing rib (i.e., the inner side surface 411 of the first sealing rib) and one side of the second sealing rib (i.e., the outer side surface 432 of the second sealing rib) are always in contact with each other in an interference fit manner, so that the inner side surface 411 of the first sealing rib and the outer side surface 432 of the second sealing rib are in contact with each other to form a first side sealing portion 500. After the first shell 100 and the second shell 200 are assembled, the other side of the first sealing rib (i.e., the outer side surface 412 of the first sealing rib) and the side corresponding to the second sealing groove 440 (i.e., the inner side surface 2 12) to form a second side sealing portion 600, the other side of the second sealing rib (i.e. the inner side surface 431 of the second sealing rib) contacts the corresponding side wall of the first sealing groove 420 (i.e. the outer side surface 112 of the inner barrier rib) to form a third side sealing portion 700, and the first side sealing portion 500 is located between the second side sealing portion 600 and the third side sealing portion 700 to achieve at least three layers of side sealing, and at the same time, the top surface of the outer barrier rib 210 is aligned with the bottom surface of the notch groove 120, so that the outer side surface 211 of the outer barrier rib is flush with the outer side surface of the first shell 100, thereby improving the appearance of the electrical housing.

[0069] Since there may be errors in production dimensions during the injection molding process, the thickness of the first sealing rib 410 and the second sealing rib 430 may be uncontrollable. As a result, when the thickness of the first sealing rib 410 and the second sealing rib 430 is not thick, the first sealing rib 410 and the second sealing rib 430 may both undergo a certain deformation when they are interference fit; or one of the first sealing rib 410 and the second sealing rib 430 may be too thick, causing one of them to undergo a certain deformation while the other hardly deforms.

[0070] For the situation where both the first sealing rib 410 and the second sealing rib 430 can undergo a certain deformation: during assembly, the first sealing rib 410 will undergo a certain deformation in the direction away from the second sealing rib 430 under the pressure of the outer side surface 432 of the second sealing rib, that is, it will deform in the direction of the outer barrier rib 210, so that the outer side surface 412 of the first sealing rib approaches the outer side wall of the second sealing groove 440 and contacts the outer side wall of the second sealing groove 440 (that is, the inner side surface 212 of the outer barrier rib) to form a second side sealing portion 600; at the same time, the second sealing rib 430 will also be deformed in the direction away from the first sealing rib 410 under the pressure of the inner side surface 411 of the first sealing rib, that is, it will deform in the direction of the inner barrier rib 110, so that the inner side surface 431 of the second sealing rib approaches the inner side wall of the first sealing groove 420 and contacts the inner side wall of the first sealing groove 420 (that is, the outer side surface 112 of the inner barrier rib) to form a third side sealing portion 700.

[0071] For the case where one of the first sealing rib 410 and the second sealing rib 430 can be deformed to a certain extent, while the other one hardly deforms: during assembly, assuming that the first sealing rib 410 is squeezed by the outer side surface 432 of the second sealing rib and deforms to a certain extent in a direction away from the second sealing rib 430, that is, deforms in the direction of the outer barrier rib 210, while the second sealing rib 430 hardly deforms, at this time, the deformation of the first sealing rib 410 will cause the outer side surface 412 of the first sealing rib to move toward the second sealing groove 440. The outer side wall of the first sealing groove 420 approaches and contacts the outer side wall of the second sealing groove 440 (i.e., the inner side surface 212 of the outer barrier rib) to form a second side sealing portion 600. Since the wall thickness of the first shell 100 is usually thin, the deformation of the first sealing rib 410 will pull the inner barrier rib 110 to deform toward the second sealing rib 430, thereby making the inner side wall of the first sealing groove 420 (i.e., the outer side surface 112 of the inner barrier rib) approach the second sealing rib 430 and contact the inner side surface 431 of the second sealing rib to form a third side sealing portion 700.

[0072] Similarly, assuming that the second sealing rib 430 is squeezed by the first sealing rib 410 and deforms to a certain extent in a direction away from the first sealing rib 410, that is, it deforms in the direction of the inner barrier rib 110, while the first sealing rib 410 hardly deforms, at this time, the deformation of the second sealing rib 430 will cause the inner side surface 431 of the second sealing rib to move closer to the inner wall of the first sealing groove 420 and contact the inner wall of the first sealing groove 420 (that is, the outer side surface 112 of the inner barrier rib) to form a third side sealing portion 700. Since the wall thickness of the second shell 200 is usually thinner, the deformation of the second sealing rib 430 will pull the outer barrier rib 210 to deform in the direction of the first sealing rib 410, thereby causing the outer side wall of the second sealing groove 440 (that is, the inner side surface 212 of the outer barrier rib) to move closer to the first sealing rib 410 and contact the outer side surface 412 of the first sealing rib to form a second side sealing portion 600.

[0073] It can be seen that when the first shell 100 and the second shell 200 are assembled, the deformation of the first sealing rib 410 and / or the second sealing rib 430 can achieve the close contact between the outer side surface 412 of the first sealing rib and the outer side wall of the second sealing groove 440 to form the second side sealing portion 600, and achieve the close contact between the inner side surface 431 of the second sealing rib and the inner side wall of the first sealing groove 420 to form the third side sealing portion 700.

[0074] It should be noted that, in this embodiment, the outer side surface 412 of the first sealing rib contacts and is interference-fitted with the outer side wall of the second sealing groove 440 to form the second side sealing portion 600, and the inner side surface 431 of the second sealing rib contacts and is interference-fitted with the inner side wall of the first sealing groove 420 to form the third side sealing portion 700. Such a design can not only improve the sealing performance of the second side sealing portion 600 and the third side sealing portion 700, but also improve the plug-in reliability of the first sealing rib 410 and the second sealing groove 440, and the plug-in reliability of the second sealing rib 430 and the first sealing groove 420 through the interference fit between the first sealing rib 410 and the second sealing groove 440, and the interference fit between the second sealing rib 430 and the first sealing groove 420, thereby increasing the assembly reliability of the first shell 100 and the second shell 200.

[0075] like Figure 8As shown, in order to achieve an interference fit between the outer side surface 412 of the first sealing rib and the outer side wall of the second sealing groove 440 to form the second side sealing portion 600, and an interference fit between the inner side surface 431 of the second sealing rib and the inner side wall of the first sealing groove 420 to form the third side sealing portion 700, the first sealing rib 410 and the second sealing rib 430 can both undergo a certain deformation: the interference fit amount between the inner side surface 411 of the first sealing rib and the outer side surface 432 of the second sealing rib is A, A=a2-A2; the assembly clearance between the outer side surface 412 of the first sealing rib and the outer side wall of the second sealing groove is B, B=a1-A1; the minimum assembly clearance between the inner side surface 431 of the second sealing rib and the inner side wall of the first sealing groove is C, C=a3-A3, satisfying A>B+C. For the case where one of the first sealing rib 410 and the second sealing rib 430 can undergo a certain deformation while the other hardly undergoes deformation, the interference fit between the inner side surface 411 of the first sealing rib and the outer side surface 432 of the second sealing rib is A, A=a2-A2, A is approximately 0.05mm~0.15mm, the assembly clearance between the outer side surface 412 of the first sealing rib and the outer side wall of the second sealing groove is B, B=a1-A1≤A, with an allowable deviation of +0.1mm, and the minimum assembly clearance between the inner side surface 431 of the second sealing rib and the inner side wall of the first sealing groove is C, C=a3-A3≤A, with an allowable deviation of +0.1mm.

[0076] In order to improve the sealing reliability of the first side sealing portion 500, the first side sealing portion 500 in the present embodiment is a face contact seal or a line contact seal. When the first side sealing portion 500 is a face contact seal, the inner side surface 411 of the first sealing rib matches the outer side surface 432 of the second sealing rib to achieve a circumferential face contact seal; and when the first side sealing portion 500 is a line contact seal, one of the inner side surface 411 of the first sealing rib and the outer side surface 432 of the second sealing rib includes a radially raised arc-shaped convex surface, and the arc-shaped convex surface is arranged circumferentially, thereby enabling the first side sealing portion 500 to form a circumferential line contact seal.

[0077] In order to improve the sealing reliability of the second side sealing portion 600, the second side sealing portion 600 in the present embodiment is a face contact seal or a line contact seal. When the second side sealing portion 600 is a face contact seal, the outer side surface 412 of the first sealing rib matches the inner side surface 212 of the outer barrier rib to achieve a circumferential face contact seal; and when the second side sealing portion 600 is a line contact seal, one of the outer side surface 412 of the first sealing rib and the inner side surface 212 of the outer barrier rib includes a radially raised arc-shaped convex surface, and the arc-shaped convex surface is arranged circumferentially, thereby enabling the second side sealing portion 600 to form a circumferential line contact seal.

[0078] In order to improve the sealing reliability of the third side sealing portion 700, the third side sealing portion 700 in this embodiment is a face contact seal or a line contact seal. When the third side sealing portion 700 is a face contact seal, the inner side surface 431 of the second sealing rib matches the outer side surface 112 of the inner barrier rib to achieve a circumferential face contact seal; and when the third side sealing portion 700 is a line contact seal, one of the inner side surface 431 of the second sealing rib and the outer side surface 112 of the inner barrier rib includes a radially raised arc-shaped convex surface, and the arc-shaped convex surface is arranged circumferentially, thereby enabling the third side sealing portion 700 to form a circumferential line contact seal.

[0079] In order to improve the protective effect of the second sealing rib 430, in this embodiment, the height of the second sealing rib 430 protruding from the bottom of the second sealing groove 440 is H1, and the height of the outer retaining rib 210 protruding from the bottom of the second sealing groove 440 is H2, satisfying H1>H2. With such a design, when the second sealing groove 440 is at the bottom, the second sealing rib 430 can protrude from the outer retaining rib 210, so that the water level in the second sealing groove 440 is not higher than the outer retaining rib 210, and also not higher than the second sealing rib 430, thereby preventing water from entering the first sealing groove 420; in addition, the interference fit contact area between the second sealing rib 430 and the first sealing rib 410 can also be increased, thereby increasing the sealing reliability of the first side sealing portion 500; finally, when the first shell 100 and the second shell 200 are assembled, the second sealing rib 430 can be inserted into the corresponding sealing groove before the first sealing rib 410, so as to guide the subsequent insertion of the first sealing rib 410, thereby facilitating the insertion and fitting of the first sealing rib 410 and the second sealing groove 440.

[0080] In order to improve the protective effect of the inner barrier rib 110, in this embodiment, the height of the inner barrier rib 110 protruding from the bottom of the first sealing groove 420 is H3, and the height of the first sealing rib 410 protruding from the bottom of the first sealing groove 420 is H4, satisfying H3>H4. With such a design, when the first sealing groove 420 is at the bottom, the inner barrier rib 110 can protrude from the first sealing rib 410, so that the water level in the first sealing groove 420 is not higher than the first sealing rib 410, and also not higher than the inner barrier rib 110, thereby preventing water from entering the electrical housing; in addition, the sealing reliability of the third side sealing part 700 can also be increased; finally, when the first housing 100 and the second housing 200 are assembled, the second sealing rib 430 can be smoothly inserted into the first sealing groove 420 through the inner barrier rib 110, so as to reduce the difficulty of aligning the first housing 100 and the second housing 200, thereby reducing the difficulty of assembling the electrical housing.

[0081] That is, no matter the housing of the electrical appliance is placed upright or upside down, under the blocking protection of the second sealing rib 430 and the inner barrier rib 110, the water that has penetrated and accumulated in the second sealing groove 440 and the first sealing groove 420 will not flow in naturally, and the greater the difference between H1 and H2, the better the protective effect of the second sealing rib 430, and the greater the difference between H3 and H4, the better the protective effect of the inner barrier rib 110.

[0082] Better, such as Fig. 9 As shown, in this embodiment, the thickness of the portion of the first shell 100 corresponding to the bottom surface of the notch groove 120 is W, that is, the sum of the width of the groove bottom of the notch groove 120, the width of the portion of the first sealing rib 410 corresponding to the groove bottom of the notch groove 120, the groove width of the first sealing groove 420 corresponding to the groove bottom of the notch groove 120, and the width of the portion of the inner retaining rib 110 corresponding to the groove bottom of the notch groove 120 is W, the height of the first sealing rib 410 protruding from the groove bottom of the notch groove 120 is h1, and the height of the inner retaining rib 110 protruding from the groove bottom of the notch groove 120 is h2, satisfying 5 / 36≤h1 / W≤ / 15 / 36, h1 / W<h2 / W≤ / 15 / 36; as shown This design can not only avoid the poor side sealing effect caused by the protruding height of the first sealing rib 410 and the inner barrier rib 110 being too short, but also facilitate the processing of the first sealing rib 410 and the inner barrier rib 110 and ensure the dimensions of the two, thereby ensuring the sealing effect of the sealing structure; in addition, it is also necessary to satisfy 5 / 36≤H2 / W≤ / 15 / 36, H2 / W

[0083] Secondly, in this embodiment, the inner and outer sides of the first sealing rib 410 are inclined in opposite directions so that the distance between the inner and outer sides of the first sealing rib 410 gradually increases toward the bottom of the first sealing groove 420, that is, the longitudinal section of the first sealing rib 410 is a trapezoid with a larger upper part and a smaller lower part, and the inner and outer sides of the second sealing rib 430 are inclined in opposite directions so that the distance between the inner and outer sides of the second sealing rib 430 gradually increases toward the bottom of the second sealing groove 440, that is, the longitudinal section of the second sealing rib 430 is a trapezoid with a smaller upper part and a larger lower part, the outer side surface 432 of the second sealing rib is parallel to and matches the inner side surface 411 of the first sealing rib, the inner side surface 212 of the outer retaining rib is parallel to and matches the outer side surface 412 of the first sealing rib, and the outer side surface 112 of the inner retaining rib is an inclined surface gradually inclined outward toward the bottom of the first sealing groove. With such a design, even if there are errors in the sizes of the first sealing rib 410 and the second sealing rib 430 due to production, the first shell 100 and the second shell 200 can be smoothly assembled under the guidance of the inclined surface, thereby reducing the dimensional processing accuracy requirements for both the first shell 100 and the second shell 200.​

[0084] In this embodiment, the longitudinal sections of the first sealing groove 420 and the second sealing groove 440 are trapezoidal, and the first sealing rib 410 cooperates with the groove bottom of the second sealing groove 440 to form a first bottom sealing portion 800 for surface contact sealing, that is, the gap size between the first sealing rib 410 and the groove bottom of the second sealing groove 440 is between 0 and 0.1 mm; and / or, the second sealing rib 430 cooperates with the groove bottom of the first sealing groove 420 to form a second bottom sealing portion 900 for surface contact sealing, that is, the gap size between the second sealing rib 430 and the groove bottom of the first sealing groove 420 is between 0 and 0.1 mm. With such a design, the water that may leak from the second side sealing portion 600 can be blocked by the first bottom sealing portion 800, and the water that may leak from the first side sealing portion 500 can be blocked by the second bottom sealing portion 900, thereby achieving four-layer or five-layer sealing to further improve the waterproof level of the sealing structure.

[0085] In order to facilitate the smooth insertion of the second sealing rib 430 into the first sealing groove 420, the inner side surface 431 of the second sealing rib in this embodiment includes an avoidance section 4311 and a mating section 4312. The avoidance section 4311 is farther away from the bottom of the second sealing groove than the mating section 4312, so that the avoidance section 4311 is inserted into the first sealing groove 420 before the mating section 4312. After the electrical housing is assembled, there is an avoidance gap between the avoidance section 4311 and the side wall corresponding to the first sealing groove 420 (that is, the outer side surface 112 of the inner barrier rib), and the mating section 4312 contacts the outer side surface 112 of the inner barrier rib to form a third side sealing portion 700. Such a design can not only further facilitate the smooth insertion of the second sealing rib 430 into the first sealing groove 420 through the design of the avoidance section 4311, but also reduce the contact area between the second sealing rib 430 and the side wall of the first sealing groove (i.e., the outer side surface 112 of the inner barrier rib), so as to reduce the friction resistance encountered by the second sealing rib 430 when inserted into the first sealing groove 420, thereby making the assembly of the electrical housing more labor-saving; finally, by designing the matching section 4312 to contact with the first sealing groove (i.e., the outer side surface 112 of the inner barrier rib) to form the third side sealing portion 700, the sealing performance of the third side sealing portion 700 can also be guaranteed.

[0086] In addition, the inner side surface 431 of the second sealing rib also includes a transition section 4313 connected between the avoidance section 4311 and the mating section 4312. The avoidance section 4311, the transition section 4313 and the mating section 4312 are inclined toward the same side so that the thickness of the second sealing rib 430 gradually decreases toward its end face direction. The inclination angle of the avoidance section is between the inclination angle of the mating section and the inclination angle of the transition section. Such a design can not only ensure the sealing area of ​​the second bottom sealing portion 900, and thus ensure the blocking effect of the second bottom sealing portion 900, but also ensure the avoidance effect of the avoidance section 4311 and the guiding effect of the outer side surface 112 of the inner blocking rib on the second sealing rib 430, so that the second sealing rib 430 can be inserted into the first sealing groove 420 more smoothly.

[0087] Finally, in this embodiment, a chamfer 413 is provided between the inner side surface 411 of the first sealing rib and the end surface of the first sealing rib. With such a design, even if the second sealing rib 430 has normal production size fluctuations, the chamfer 413 can be used to guide the second sealing rib 430 to be smoothly inserted into the first sealing groove 420, thereby reducing the difficulty of assembling the electrical housing.

[0088] It can be understood that in other embodiments of the present invention, the height H1 of the second sealing rib protruding from the bottom of the second sealing groove may also be equal to the height H2 of the outer blocking rib protruding from the bottom of the second sealing groove.

[0089] It can be understood that, in other embodiments of the present invention, the height H3 of the inner retaining rib protruding from the bottom of the first sealing groove may also be equal to the height H4 of the first sealing rib protruding from the bottom of the first sealing groove.

[0090] It can be understood that in other embodiments of the present invention, the cross-sectional shape of the first sealing groove and the second sealing groove can also be a V-shaped groove, and correspondingly, the longitudinal section of the first sealing rib and the second sealing rib is also a V-shaped rib. At this time, the first bottom sealing part and the second bottom sealing part are both line contact seals.

[0091] It can be understood that in other embodiments of the present invention, a part of the hole wall of the wire outlet hole is provided on the first shell, and the remaining part is provided on the second shell, and the wire outlet hole is formed after the first shell and the second shell are assembled. At this time, the assembly gap between the first shell and the second shell is the part other than the wire outlet hole, and a sealing member is separately provided at the wire outlet hole for sealing.

[0092] Embodiment 2

[0093] This embodiment provides an electrical appliance, including an electrical appliance housing and electrical components. The electrical appliance housing adopts the electrical appliance housing described in Embodiment 1, and the electrical appliance housing includes a cavity. The electrical components are installed in the cavity, wherein the electrical appliance can be a hand controller, a control box, a motor box, a battery box, etc.

[0094] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. An electrical housing, comprising a first housing, a second housing and a cavity formed by assembling the first housing and the second housing for accommodating electrical components, characterized in that: The assembly gap between the first shell and the second shell is sealed by a sealing structure formed by the cooperation of the two shells, and the sealing structure includes: A first sealing rib and a first sealing groove provided on the first shell, and a second sealing rib and a second sealing groove provided on the second shell; The first sealing rib is plugged into the second sealing groove, and the first sealing groove is plugged into the second sealing rib; One side of the first sealing rib and one side of the second sealing rib are interference fit to form a first side sealing portion; the other side of the first sealing rib and the second sealing groove are relatively close to each other through the interference fit of the first sealing rib and the second sealing rib to form a second side sealing portion; The other side of the second sealing rib is relatively close to the first sealing groove through the interference fit of the first sealing rib and the second sealing rib to form a third side sealing portion; The first side seal portion is located between the second side seal portion and the third side seal portion.

2. An electrical appliance housing as claimed in claim 1, characterized in that: The first side sealing portion formed by interference fit between one side of the first sealing rib and one side of the second sealing rib is a surface contact seal or a line contact seal.

3. An electrical appliance housing as claimed in claim 1, characterized in that: The second side sealing portion formed by the other side of the first sealing rib and the second sealing groove being relatively close to each other and in contact with each other is a surface contact seal or a line contact seal.

4. An electrical appliance housing as claimed in claim 1, characterized in that: The third side sealing portion formed by the other side of the second sealing rib being relatively close to and in contact with the first sealing groove is a surface contact seal or a line contact seal.

5. An electrical appliance housing as claimed in claim 1, characterized in that: The first sealing rib cooperates with the groove bottom of the second sealing groove to form a first bottom sealing portion; and / or the second sealing rib cooperates with the groove bottom of the first sealing groove to form a second bottom sealing portion.

6. An electrical appliance housing as claimed in claim 1, characterized in that: The second shell includes an outer barrier rib spaced apart on the outside of the second sealing rib, the second sealing groove is formed between the second sealing rib and the outer barrier rib, the outer side surface of the first sealing rib contacts the inner side surface of the outer barrier rib to form the second side sealing portion, the height of the second sealing rib protruding from the bottom of the second sealing groove is H1, the height of the outer barrier rib protruding from the bottom of the second sealing groove is H2, and H1>H2 is satisfied.

7. An electrical appliance housing as claimed in claim 1, characterized in that: The first shell includes an inner barrier rib spaced inside the first sealing rib, the first sealing groove is formed between the inner barrier rib and the first sealing rib, the height of the inner barrier rib protruding from the bottom of the first sealing groove is H3, the height of the first sealing rib protruding from the bottom of the first sealing groove is H4, and H3>H4 is satisfied.

8. An electrical appliance housing as claimed in claim 1, characterized in that: The second shell includes an outer barrier rib spaced apart on the outside of the second sealing rib, the second sealing groove is formed between the second sealing rib and the outer barrier rib, the first shell includes an inner barrier rib spaced apart on the inside of the first sealing rib and a notch groove spaced apart on the outside of the first sealing rib, the first sealing groove is formed between the inner barrier rib and the first sealing rib, the top surface of the outer barrier rib abuts against the bottom surface of the notch groove, the thickness of the first shell is W, The height of the first sealing rib protruding from the bottom of the notch groove is h1, and the height of the inner retaining rib protruding from the bottom of the notch groove is h2, which satisfies 5 / 36≤h1 / W≤ / 15 / 36, h1 / W≤h2 / W≤ / 15 / 36; The height of the second sealing rib protruding from the bottom of the second sealing groove is H1, and the height of the outer blocking rib protruding from the bottom of the second sealing groove is H2, satisfying 5 / 36≤H2 / W≤ / 15 / 36, H2 / W≤H1 / W≤ / 15 / 36.

9. An electrical appliance housing according to any one of claims 1 to 8, characterized in that: A chamfer is provided between one side of the first sealing rib and an end surface of the first sealing rib.

10. An electrical appliance housing according to any one of claims 1 to 8, characterized in that: The inner side surface of the second sealing rib includes an avoidance section and a matching section. The avoidance section is inserted into the first sealing groove before the matching section. There is an avoidance gap between the avoidance section and the side wall corresponding to the first sealing groove. The matching section contacts the first sealing groove to form the third side sealing portion.

11. An electrical appliance housing as claimed in claim 10, characterized in that: The inner side surface of the second sealing rib also includes a transition section connected between the avoidance section and the mating section, the avoidance section, the transition section and the mating section are inclined toward the same side, and the inclination angle of the avoidance section is between the inclination angles of the mating section and the transition section.

12. An electrical appliance housing according to any one of claims 1 to 8, characterized in that: The other side of the first sealing rib contacts the second sealing groove and is interference fit to form the second side sealing portion, and the other side of the second sealing rib contacts the first sealing groove and is interference fit to form the third side sealing portion.

13. An electrical appliance housing according to any one of claims 1 to 8, characterized in that: The two sides of the first sealing rib are inclined in opposite directions so that the distance between the two sides of the first sealing rib gradually increases toward the bottom of the first sealing groove. The two sides of the second sealing rib are inclined in opposite directions so that the distance between the two sides of the second sealing rib gradually increases toward the bottom of the second sealing groove. One side of the second sealing rib matches one side of the first sealing rib.

14. An electrical appliance, comprising an electrical appliance housing and electrical components, wherein the electrical appliance housing comprises a cavity, and the electrical components are installed in the cavity, characterized in that: The electrical appliance housing adopts the electrical appliance housing according to any one of claims 1 to 13.

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