Shell part, shell assembly, household appliance and injection mold
By setting the inlet point in the remote end of the buffer structure of the tower fan shell, the problem of breakpoints and shrinkage marks at the input of the injection molding process is solved, and the high -quality appearance and accurate assembly of the shell parts are realized.
Patent Information
- Application Number
- CN202411763621.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-01-28
AI Technical Summary
During the injection molding process of tower fan, there are breakpoints and shrinkage marks at the glue inlet point of the front shell, which affects the appearance quality and assembly effect of the shell.
Design a shell part, which includes the shell structure and the buffer structure, the buffer structure and the shell structure are integrated into injection molding, and the glue point is set at the remote end of the buffer structure to prevent the hot -melt plastic directly impact the outer surface of the shell.
Through this design, inter -molecular chain stress caused by cooling shrinkage is eliminated, and the surface of the shell part is avoided with shrinking marks and bright spots, which improves the appearance quality and assembly accuracy.
Smart Images
Figure CN119373739A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of mold technology, and in particular to a housing component, a housing assembly, a household appliance and an injection mold. Background Art
[0002] As a common household appliance, tower fans are favored by consumers for their unique appearance design and good air supply effect. The shell of a traditional tower fan is formed by splicing a front shell and a rear shell together, and a stopper limit structure is provided on the rear shell to prevent the front shell and the rear shell from being misaligned or broken during assembly.
[0003] In order to meet the demand of lightweight tower fans, the front shell and the rear shell are mostly injection molded parts, which are molded by injection molds. However, after the front shell is molded and cooled, there is a breakpoint at the glue feeding point of the front shell, which will affect the coordination effect of the stop limit structure on the front shell and the rear shell. For this reason, the glue feeding point of the front shell is mostly set on the inner side.
[0004] During the injection molding process of the front shell, when the injection material is rapidly cooled to below the solidification temperature, the cooling shrinkage will cause the stress between the molecular chains to be unable to be completely released, thus forming shrinkage marks and bright spots at the injection point. Since the injection point of the front shell is on the inner side, the shrinkage marks and bright spots formed at the injection point will affect the appearance quality of the outer surface of the front shell. Summary of the invention
[0005] Based on this, it is necessary to provide a shell part, shell assembly, household appliance and injection mold to address the problem that shrinkage marks and bright spots formed at the glue injection point will affect the appearance quality of the outer surface of the front shell.
[0006] A housing member, comprising:
[0007] The shell structure has an opening communicating with the interior thereof;
[0008] A buffer structure, one end of which is disposed on the inner wall of the shell structure, and the other end of which is opposite to the buffer structure extends in a direction away from the shell structure;
[0009] The buffer structure and the shell structure are integrally formed by injection molding, and one end of the buffer structure away from the shell structure has a glue feeding point.
[0010] In one of the embodiments, the buffer structure is located at an edge of the opening of the shell structure.
[0011] In one embodiment, the shell structure has an end surface for being spliced with a matching shell, and a chamfer is provided between the end surface and the buffer structure.
[0012] In one embodiment, the shell structure is semi-cylindrical, one end of the buffer structure is arranged on the inner wall of the shell structure, and the other end opposite to the buffer structure extends toward the axis of the shell structure.
[0013] In one embodiment, the buffer structure includes a plurality of buffer structures, and all of the buffer structures are arranged at intervals along the circumference of the shell structure;
[0014] And / or, all the buffer structures are arranged at intervals along the axial direction of the shell structure.
[0015] A shell assembly comprises the shell member as described in any one of the above items.
[0016] In one embodiment, the housing assembly further includes a mating housing, which can be spliced with the housing structure and closes the opening of the housing structure.
[0017] In one embodiment, the mating shell includes a stepped portion, the stepped portion is protrudingly disposed on an end surface of the mating shell for splicing with the shell structure, and when the mating shell is spliced with the shell structure, the stepped portion extends into the opening.
[0018] In one embodiment, the step portions include a plurality of step portions, all of which are arranged at intervals along the extension direction of the mating shell, and an avoidance gap is formed between two adjacent step portions. When the mating shell is spliced with the shell structure, the buffer structure is located in the avoidance gap.
[0019] In one embodiment, the shell structure is used for the end surface of the shell to be spliced with the mating shell, and there is a chamfer between the end surface and the buffer structure;
[0020] The mating shell comprises a blocking portion, which is protrudingly arranged on the end surface of the mating shell for splicing with the shell structure and is located in the avoidance notch, and the blocking portion abuts against the chamfer.
[0021] A household appliance comprises a housing assembly as described in any one of the above items.
[0022] An injection mold, used for injection molding the housing member as described above, the injection mold comprising:
[0023] The main body space is used for the main structure of the injection-molded shell member;
[0024] A buffer space, connected to the main body space and used for injection molding the buffer structure;
[0025] The glue inlet is connected to an end of the buffer space away from the main body space.
[0026] The above-mentioned shell part, by setting a glue feeding point at the end of the buffer structure away from the shell part, during the injection molding process of the shell part, the plastic in the hot melt state will not directly impact the outer surface of the shell part, thereby eliminating the stress between the molecular chains due to cooling and shrinkage, and avoiding the appearance defects of shrinkage marks and bright spots on the outer surface of the shell part. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic structural diagram of the shell of the existing shell assembly.
[0028] Figure 2 for Figure 1 Schematic diagram of the cross section of the middle shell.
[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0030] Figure 4 for Figure 1 Schematic diagram of the structure of the front shell of the middle shell during injection molding.
[0031] Figure 5 for Figure 4 A schematic cross-sectional view of the front shell of the middle shell during injection molding.
[0032] Figure 6 for Figure 5 Enlarged view of point B in the middle.
[0033] Figure 7 It is a schematic diagram of the assembly of the front shell of the housing with the rear shell after the bottom gluing is adopted.
[0034] Figure 8 This is a schematic diagram of the structure of the shell member and the mating shell in some embodiments of the present application.
[0035] Fig. 9 for Figure 8 Schematic cross-section of the middle shell.
[0036] Fig.10 for Fig. 9 Enlarged view of point C in the middle.
[0037] Fig.11 for Figure 8 Schematic diagram of the structure of the middle shell during injection molding.
[0038] Fig.12 for Fig.11 Enlarged view of point D in the middle.
[0039] Fig.13 for Figure 8 Schematic diagram of the cross section of the housing during injection molding.
[0040] Fig.14 for Fig.13 Enlarged view of point E in the middle.
[0041] Fig.15 for Figure 8 A schematic diagram of the structure of the middle shell member and the matching shell from another perspective.
[0042] Fig.16 for Fig.15 Enlarged view of point F in the middle.
[0043] Description of reference numerals:
[0044] Front shell 100; rear shell 110; break point 120;
[0045] Shell structure 10; opening 11;
[0046] Buffer structure 20; glue feeding point 21; chamfer 22;
[0047] Matching housing 30; stepped portion 31; avoidance notch 32; blocking portion 33;
[0048] Glue inlet 40; inclined top 41; hot runner 42; first cold runner 43; first cold gate 44; second cold runner 45. DETAILED DESCRIPTION
[0049] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0050] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0051] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0052] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0053] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0054] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0055] Before introducing the embodiments of the present application, see Figure 1 , Figure 1 The schematic diagram of the decomposition of the shell of a traditional household appliance is shown. The traditional household appliance includes a front shell 100 and a rear shell 110. The front shell 100 and the rear shell 110 are spliced together to form a cylindrical shell, and the interior of the shell is used to store parts in the household appliance or form various air ducts.
[0056] The front shell 100 and the rear shell 110 are both injection molded. In the process of injection molding of the front shell 100, refer to Figure 4 , Figure 5 and Figure 6 If the glue point 21 is set at the contact area between the front shell 100 and the rear shell 110, that is, the glue point 21 is set on the bottom of the front shell 100, because the front shell 100 needs to be cut at the glue point 21 after injection molding to separate it from the injection mold, there will be a breakpoint 120 at the glue point 21. Figure 7 As shown, the breakpoint 120 may cause the bottom end surface of the front shell 100 to be uneven, thereby making it impossible for the front shell 100 to be assembled with the rear shell 110 normally.
[0057] If the glue point 21 of the front shell 100 is set on the outer surface of the front shell 100, the outer surface of the shell will be uneven, affecting the user experience. Figure 6 However, in this injection molding solution, when the material is rapidly cooled to below the solidification temperature during the injection molding process, the cooling shrinkage will cause the stress between the molecular chains to be unable to be completely released, thereby forming shrinkage marks and bright spots at the injection port 40. The shrinkage marks and bright spots affect the appearance quality of the outer side of the front shell 100, thereby affecting the user experience.
[0058] For this purpose, see Figure 8 , Fig. 9 and Fig.10 , a household appliance provided in one embodiment of the present application includes a shell assembly, the shell assembly includes a shell member and a matching shell 30, and the shell assembly formed after the shell member and the matching shell 30 are spliced together can serve as the shell of the household appliance. And after the shell member and the matching shell 30 are spliced together, the shell member and the matching shell 30 can form an installation space for accommodating other components of the household appliance, and the other components can be circuit boards. When the household appliance is an appliance that can output airflow, such as a fan or a tower fan, after the shell member and the matching shell 30 are spliced together, the installation space formed by the shell member and the accessory shell can also be used for gas circulation.
[0059] The installation space may be formed entirely in the shell member, or the shell member and the mating shell 30 may form the installation space together. Specifically, the shell member has an installation subspace inside, and the shell member also forms an opening 11 connected to the installation space. After the mating shell 30 and the shell member are spliced together, the mating body closes the opening 11 on the shell member, so that the mating body and the shell member are spliced together to form the installation space.
[0060] Among them, if the shell part is directly injection molded in the same way as the above-mentioned front shell 100, shrinkage marks and bright spots will be formed on the outer surface of the shell part due to injection molding. For this reason, the shell part includes a shell structure 10 and a buffer structure 20. The interior of the shell structure 10 is formed with the above-mentioned installation sub-space, and the installation sub-spaces are interconnected. The matching shell 30 can be spliced with the shell structure 10 and close the opening 11 on the shell structure 10.
[0061] One end of the buffer structure 20 is disposed on the inner wall of the shell structure 10, that is, one end of the buffer structure 20 is disposed on the inner wall of the installation subspace, and the other end extends in a direction away from the shell structure 10. In addition, the buffer structure 20 and the shell structure 10 are integrally formed by injection molding, and the end of the buffer structure 20 away from the shell structure 10 has a glue feeding point 21.
[0062] The glue point 21 refers to the part of the shell part connected to the plastic in the cold runner of the injection mold after the shell part is formed in the injection mold. During the injection molding process of the shell part, the plastic in the cold runner is kept flowing by the injection pressure and its own heat. When the shell part is cooled, the plastic in the cold runner is cooled together, and the plastic in the cold runner and the shell part form a whole. Finally, after the injection mold is opened, the plastic in the cold runner is separated from the injection mold together with the shell part, and then the plastic in the cold runner and the shell part are separated from each other by cutting or other methods, and finally the desired shell part is obtained.
[0063] By setting a glue feeding point 21 at the end of the buffer structure 20 away from the shell part, during the injection molding process of the shell part, the hot-melt plastic will not directly impact the outer surface of the shell part, thereby eliminating the stress between the molecular chains due to cooling and shrinkage, and avoiding the appearance defects of shrinkage marks and bright spots on the outer surface of the shell part.
[0064] In some embodiments of the present application, the buffer structure 20 is located at the edge of the shell structure 10 at the opening 11. Since the melted plastic starts to be glued from the glue feeding point 21 on the buffer structure 20 of the shell during injection molding of the shell part, the buffer structure 20 is set at the edge of the opening 11, so that the shell part will be formed from the edge of the shell structure 10, so that the glue feeding path of the melted plastic is close to an L shape.
[0065] If the buffer structure 20 is disposed at the injection point 21, the flow path of the melted plastic in the injection mold will be close to a T-shape. Compared with the T-shape injection path, the L-shape injection path can not only reduce the complexity of the injection mold, but also make the melted plastic flow more smoothly in the mold, thereby improving the injection efficiency and quality.
[0066] It should be noted that, in actual use, the shell member can be in different shapes according to the needs of the household appliance. The shell member can be hemispherical, semi-cylindrical as in the following embodiment, cubic, or other irregular shapes. The edge of the opening 11 of the shell member refers to the part of the inner wall of the shell member close to the opening 11. Taking the shell member as a hemispherical shape as an example, the edge of the hemispherical shape close to the opening 11 refers to a circle of the inner wall of the hemisphere close to the opening 11.
[0067] In some embodiments of the present application, the shell structure 10 is semi-cylindrical, one end of the buffer structure 20 is disposed on the inner wall of the shell structure 10, and the other end extends toward the axis of the shell structure 10. In other words, the length direction of the buffer structure 20 is perpendicular to the inner wall of the shell structure 10, so that the flow path of the melted plastic in the injection mold is closer to an L-shape, thereby making the melted plastic flow more smoothly in the mold, thereby improving the injection efficiency and quality.
[0068] In some embodiments, the buffer structure 20 includes a plurality of buffer structures, and each buffer structure 20 has a glue feeding point 21, so glue can be fed from multiple glue feeding points 21 at the same time, thereby improving the efficiency and quality of injection molding. Specifically, all buffer structures 20 are arranged at intervals along the circumference of the shell structure 10, or all buffer structures 20 are arranged at intervals along the axial direction of the shell, or multiple buffer structures 20 are arranged at intervals along the circumference of the shell structure 10, and multiple buffer structures 20 are arranged at intervals along the axial direction of the shell structure 10.
[0069] Specifically, in one embodiment, a plurality of buffer structures 20 form a plurality of groups, each group of buffer structures 20 includes two buffer structures 20, and the two buffer structures 20 are respectively arranged at both ends of the shell structure 10 in the circumferential direction, that is, the two buffer structures 20 in each group are located at the edge of the opening 11 of the half cylinder. In addition, the plurality of buffer structures 20 are arranged at intervals along the axial direction of the shell structure 10, so that glue is simultaneously fed through the plurality of glue inlets 40 on the plurality of buffer structures 20, thereby improving the production efficiency of the shell parts.
[0070] In some embodiments of the present application, the mating shell 30 is also semi-cylindrical, so that the mating shell 30 and the shell member can form a complete cylindrical structure after being spliced together. In other embodiments, the mating shell 30 can also be a plate-like structure, as long as the mating shell 30 can close the opening 11 of the shell member.
[0071] The mating shell 30 includes a stepped portion 31, which is protrudingly arranged on the end surface of the mating shell 30 for splicing with the shell structure 10, and when the mating shell 30 is spliced with the shell structure 10, the stepped portion 31 extends into the inlet opening 11. In this way, the splicing of the mating shell 30 and the shell structure 10 is limited by the protruding stepped portion 31, and when the inner wall of the shell structure 10 abuts against the stepped portion 31, it means that the shell structure 10 and the mating shell 30 are aligned with each other, so that the shell structure 10 and the mating shell 30 are fixed to each other.
[0072] For further information, see Fig.15 and Fig.16 The mating shell 30 is provided with stepped portions 31 on both end surfaces for splicing with the shell member. When the mating shell 30 and the shell structure 10 are spliced with each other, the inner wall of the shell structure 10 is respectively connected to one side of each stepped portion 31 facing the other stepped portion 31, so that the position of the shell member is limited by the two stepped portions 31, thereby improving the assembly efficiency of the shell member and the mating shell 30.
[0073] Specifically, in some examples, in order to avoid mutual interference between the buffer structure 20 and the step portion 31 provided on the shell structure 10, the step structure includes multiple step structures, and all the step structures are arranged at intervals along the extension direction of the matching shell 30, and the extension direction of the matching shell 30 is the axis direction of the half cylinder. Among them, an avoidance gap 32 is formed between two adjacent step portions 31. When the matching shell 30 and the shell structure 10 are spliced with each other, the buffer structure 20 is located in the avoidance gap 32, thereby avoiding interference between the buffer structure 20 and the step portion 31.
[0074] In actual use, if the shell member and the mating shell 30 are not tightly matched, the end face of the mating shell 30 and the end face of the shell structure 10 cannot be tightly fitted together, and there will be gaps in some places. If the gap is close to the step portion 31, the step portion 31 can play a certain shielding role on the gap, preventing external dust or water vapor from entering the shell structure 10 or the mating shell 30. If the gap is located at the avoidance notch 32, the step portion 31 cannot prevent external dust or water vapor from entering the shell structure 10 or the mating shell 30 through the gap.
[0075] To this end, the housing structure 10 has an end face for splicing with the mating housing 30, and a chamfer 22 is provided between the end face and the buffer structure 20. The mating housing 30 includes a blocking portion 33, which is protrudingly arranged on the end face of the mating housing 30 for splicing with the housing structure 10 and is located in the avoidance notch 32, and the blocking portion 33 abuts against the chamfer 22. In this way, even if the gap formed between the end face of the mating housing 30 and the end face of the housing structure 10 is close to the avoidance notch 32, the blocking portion 33 will block the gap to prevent external dust or water vapor from entering the housing structure 10 or the mating housing 30 through the gap.
[0076] Furthermore, based on the above-mentioned housing, the present application embodiment also provides an injection mold, see Fig.11 , Fig.12 , Fig.13 and Fig.14 , used for injection molding of a shell member as in any of the above embodiments, the injection mold comprises a main body space, a buffer space and a glue inlet 40. The main body space is used for injection molding of the main structure of the shell member, and the buffer space is connected to the main body space and is used to mold the buffer structure 20. The glue inlet 40 is connected to an end of the buffer space away from the main body space, and the melted plastic enters the buffer space and the main body space from the glue inlet 40, and after the shell member is injection molded, the glue inlet 40 is directly opposite to the glue inlet point 21 of the buffer structure 20.
[0077] Specifically, the injection mold includes a fixed mold, a movable mold and a slanted top 41, and the movable mold can be controlled to approach or move away from the fixed mold. The slanted top 41 is movably installed on the movable mold, and the movement direction of the slanted top 41 relative to the movable mold intersects with the movement direction of the movable mold relative to the fixed mold. The fixed mold, the movable mold and the slanted top 41 can be spliced together to form a main space and a buffer space, and the slanted top 41 is provided with a glue inlet 40.
[0078] After the shell is formed in the injection mold, the movable mold drives the inclined top 41 to separate from the fixed mold, so that the top of the shell is separated from the fixed mold. Then, the inclined top 41 moves relative to the movable mold, so that the inclined top 41 is separated from the buffer structure 20 and the inner wall of the shell, so that the shell falls off from the movable mold.
[0079] The mold body also includes a hot runner 42, a first cold runner 43, a first cold gate, and a second cold runner. The hot runner 42 is connected to the first cold runner 43, the first cold runner 43 is connected to the first cold gate 44, the first cold gate 44 is connected to the second cold runner 45, and the second cold runner 45 is connected to the glue inlet 40. The molten plastic enters the glue inlet 40 through the first cold runner 43, the first cold gate 44, and the second cold runner 45, and finally fills the main space and the buffer space to complete the injection molding of the shell. Among them, the extension directions of the first cold runner 43 and the second cold runner 45 are arranged to intersect, so that the flow rate of the molten plastic can be buffered in the process of entering the second cold runner 45 from the first cold runner 43, so that the molten plastic can be evenly distributed in the main space and the buffer space, thereby improving the quality of injection molding.
[0080] The above-mentioned housing member has at least the following advantages:
[0081] By setting a glue feeding point 21 at one end of the buffer structure 20 away from the shell part, during the injection molding process of the shell part, the hot-melt plastic will not directly impact the outer surface of the shell part, thereby eliminating the stress between the molecular chains due to cooling and shrinkage, and avoiding shrinkage marks and bright spots on the outer surface of the shell part. Appearance defects.
[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0083] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A housing member, characterized in that: The housing member comprises: The housing structure (10) has an opening (11) communicating with the interior of the housing; A buffer structure (20), one end of which is arranged on the inner wall of the shell structure (10), and the other end of which is opposite to the other end and extends in a direction away from the shell structure (10); The buffer structure (20) and the shell structure (10) are integrally formed by injection molding, and one end of the buffer structure (20) away from the shell structure (10) has a glue feeding point (21).
2. The housing member according to claim 1, characterized in that: The buffer structure (20) is located at the edge of the opening (11) of the shell structure (10).
3. The housing member according to claim 2, characterized in that: The housing structure (10) has an end face for being spliced with a matching housing (30), and a chamfer (22) is provided between the end face and the buffer structure (20).
4. The housing member according to claim 1, characterized in that: The shell structure (10) is semi-cylindrical, one end of the buffer structure (20) is arranged on the inner wall of the shell structure (10), and the other opposite end extends towards the axis of the shell structure (10).
5. The housing member according to claim 4, characterized in that: The buffer structure (20) comprises a plurality of buffer structures, and all of the buffer structures (20) are arranged at intervals along the circumference of the shell structure (10); And / or, all of the buffer structures (20) are arranged at intervals along the axial direction of the shell structure (10).
6. A housing assembly, characterized in that: It comprises a housing member as described in any one of claims 1 to 5.
7. The housing assembly according to claim 6, characterized in that: The housing assembly further comprises a mating housing (30), wherein the mating housing (30) can be spliced with the housing structure (10), and the mating housing (30) closes the opening (11) of the housing structure (10).
8. The housing member according to claim 7, characterized in that: The mating shell (30) comprises a stepped portion (31), wherein the stepped portion (31) is protrudingly arranged on an end surface of the mating shell (30) for being spliced with the shell structure (10), and when the mating shell (30) is spliced with the shell structure (10), the stepped portion (31) extends into the opening (11).
9. The housing assembly according to claim 8, characterized in that: The step portions (31) include a plurality of step portions (31), all of which are arranged at intervals along the extension direction of the mating shell (30), and an avoidance gap (32) is formed between two adjacent step portions (31); when the mating shell (30) and the shell structure (10) are spliced together, the buffer structure (20) is located in the avoidance gap (32).
10. The housing assembly according to claim 9, characterized in that: The housing structure (10) has an end face for being spliced with a matching housing (30), and a chamfer (22) is provided between the end face and the buffer structure (20); The mating shell (30) comprises a blocking portion (33), the blocking portion (33) being protrudingly arranged on the end surface of the mating shell (30) for splicing with the shell structure (10) and being located in the avoidance notch (32), the blocking portion (33) being against the chamfer (22).
11. A household appliance, characterized in that: Comprising a housing assembly as described in any one of claims 6-10.
12. An injection mold for injection molding a housing member as claimed in any one of claims 1 to 5, characterized in that: The injection mold comprises: The main body space is used for the main structure of the injection-molded shell member; A buffer space, connected to the main body space and used for injection molding the buffer structure (20); The glue inlet (40) is connected to an end of the buffer space away from the main body space.