A housing structure and a warmer

Abstract

The utility model provides a kind of shell structure and warmer, it is related to shell manufacturing technical field.The shell structure includes two shell bodies and connecting structure of mutual sleeve connection, two shell bodies include upper shell body and lower shell body, the inner cavity of upper shell body and the inner cavity of lower shell body are interconnected, lower shell body is provided with first via, and upper shell body is provided with second via;Connecting structure is connected between two shell bodies, upper shell body has upper lifting position and lower position, connecting structure includes the connecting piece being set on a shell body, and connecting piece and corresponding shell body are set apart;At least when upper shell body is in upper lifting position, first via and second via are communicated with outside respectively.The utility model embodiment is by using split type connecting piece design, simplify the processing technology of shell body, avoid the manufacturing problem brought by complex connecting structure directly formed on shell body, reduce material loss and equipment investment cost in production process.

Description

Technical Field

[0001] This utility model belongs to the field of shell manufacturing technology, and in particular relates to a shell structure and a heater. Background Technology

[0002] In daily life, nested, relatively expandable double-shell structures are widely used. For example, some household appliances or office equipment often use this structure to allow the shell to expand or contract, in order to meet different usage needs or storage standards.

[0003] In existing technologies, such shell structures typically involve sliding or rotating connection structures on at least one shell during actual production. However, the inclusion of these connection structures significantly increases the manufacturing cost of the shell. Utility Model Content

[0004] In view of this, the present invention provides a shell structure and a heater, aiming to reduce the manufacturing difficulty and cost of nested double shell structures.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a shell structure comprising two shells nested together and a connecting structure. The two shells are an upper shell and a lower shell, with the inner cavities of the upper shell and the lower shell communicating with each other. The lower shell has a first through-hole, and the upper shell has a second through-hole. The connecting structure connects the two shells, allowing the upper and lower shells to move vertically. The upper shell has an upward position and a downward position. The connecting structure includes a connector mounted on one of the shells, the connector being separate from the corresponding shell. At least when the upper shell is in the upward position, the first through-hole and the second through-hole communicate with the outside.

[0007] In one embodiment, the connector is an injection-molded part, and the housing corresponding to the connector is a metal part.

[0008] In one embodiment, the connector includes a connecting frame connected to the lower end of the upper housing; the connecting frame is sleeved with the lower housing, and the upper housing is slidably disposed with respect to the lower housing via the connecting frame.

[0009] In one embodiment, the connecting frame is provided with a first limiting structure. When the upper housing is in the raised position, the first limiting structure cooperates with the upper end of the lower housing to restrict the upper housing from moving up and down, thereby positioning the upper housing in the raised position.

[0010] In one embodiment, the upper housing is sleeved around the periphery of the lower housing, and the connecting frame is disposed on the inner side of the lower end of the upper housing; the first limiting structure includes: a first elastic protrusion disposed on the connecting frame and extending inward to the connecting frame, the first elastic protrusion being elastically movable in the lateral direction of the connecting frame; and a first support portion disposed on the connecting frame and extending upward to the connecting frame, the first support portion being located below the first elastic protrusion; the upper end of the lower housing is provided with a first mating portion, and when the upper housing is in the raised position, the first elastic protrusion abuts against the upper side of the first mating portion, and the first support portion abuts against the lower side of the first mating portion.

[0011] In one embodiment, the first mating part has a first through hole; the first limiting structure further includes a first positioning post disposed at the upper end of the first support part and extending upward; when the upper housing is in the raised position, the first positioning post passes through the first through hole.

[0012] In one embodiment, the first mating portion includes at least one first protrusion, and the first elastic protrusion and the first support portion abut against the same first protrusion; or, the first mating portion includes multiple first protrusions, and the first elastic protrusion and the first support portion abut against multiple first protrusions.

[0013] In one embodiment, the first outward protrusion includes an outward flange formed at the upper end of the lower housing, the first elastic protrusion abuts against the upper surface of the outward flange, and the first support portion abuts against the lower surface of the outward flange.

[0014] In one embodiment, the upper housing is sleeved around the lower housing, and the connecting frame is disposed on the inner side of the lower end of the upper housing; the connecting frame is further provided with a second limiting structure, which cooperates with the lower end of the upper housing to restrict the vertical movement of the connecting frame relative to the upper housing.

[0015] In one embodiment, the second limiting structure includes: a second elastic protrusion disposed on the connecting frame and extending outward from the connecting frame; and a second support portion disposed on the connecting frame and extending outward from the connecting frame; the lower end of the upper housing is provided with a second mating portion, the second elastic protrusion abutting against the upper side of the second mating portion, and the second support portion abutting against the lower side of the second mating portion.

[0016] In one embodiment, the lower end of the upper housing is provided with: a folding body that folds inward and upward from the lower end of the upper housing; an inner flange that is located at the upper end of the folding body and folds inward; the second mating part includes the inner flange; the connecting frame is located on the inner side of the folding body; the second elastic protrusion abuts against the upper side of the inner flange; and the second support part abuts against the lower side of the inner flange.

[0017] This utility model also provides a heater, which includes: a shell structure and a heating device, wherein the heating device is disposed within the lower shell structure; the shell structure includes two shells nested together and a connecting structure; the two shells include an upper shell and a lower shell, the inner cavities of the upper shell and the lower shell are interconnected, the lower shell is provided with a first through hole, and the upper shell is provided with a second through hole; the connecting structure connects the two shells so that the upper shell and the lower shell can be moved vertically, the upper shell has an upward position and a downward position, and the connecting structure includes a connector disposed on one of the shells, the connector being separately disposed from the corresponding shell; wherein, at least when the upper shell is in the upward position, the first through hole and the second through hole are respectively connected to the outside.

[0018] In one embodiment, the upper housing is sleeved on the outside of the lower housing, and the button of the heater is located on the lower housing; when the upper housing is in the lowered position, the upper housing covers the button; when the upper housing is in the raised position, the button is exposed.

[0019] The housing structure provided in this embodiment includes two nested housings and a connecting structure. The two housings are an upper housing and a lower housing, with the inner cavities of the upper and lower housings interconnected. The lower housing has a first through-hole, and the upper housing has a second through-hole. The connecting structure connects the two housings, allowing the upper and lower housings to move vertically. The upper housing has an upward position and a downward position. The connecting structure includes a connector mounted on one housing, which is separate from the corresponding housing. At least when the upper housing is in the upward position, the first and second through-holes are connected to the outside. This embodiment simplifies the housing manufacturing process by using a separate connector design, avoiding the manufacturing difficulties caused by directly molding complex connecting structures on the housing body, and reducing material waste and equipment investment costs during production. Furthermore, the separate connector facilitates individual design optimization and replacement. When the connecting structure wears out or needs to be adapted to different housing models, only the connector needs to be adjusted or replaced, without redesigning and reproducing the entire housing, effectively improving product compatibility and iteration efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 An overall structural diagram of the shell structure provided by this utility model (upper position);

[0022] Figure 2 The overall structural diagram of the shell structure provided by this utility model (lower position);

[0023] Figure 3 An exploded view of the overall shell structure provided by this utility model;

[0024] Figure 4 A schematic diagram of the structure of the connector provided by this utility model;

[0025] Figure 5 This is an overall sectional view of the shell structure provided by this utility model;

[0026] Figure 6 for Figure 5 Enlarged view of point D in the middle;

[0027] Figure 7 for Figure 3 Exploded view;

[0028] Figure 8 Partial structural diagram of the upper shell provided by this utility model;

[0029] Figure 9 Partial structural diagram of the lower shell provided by this utility model;

[0030] Figure 10 The overall structural diagram of the heater provided by this utility model;

[0031] Figure 11 This is a cross-sectional view of the heater provided by this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Shell structure; 1 / 1A / 1B / 1C. Upper shell; 11. Second through hole; 12. Second mating part; 13. Folding body; 14. Inner flange; 15. Second through hole; 2 / 2A / 2B / 2C. Lower shell; 21. First through hole; 22. First mating part; 221. First outward protrusion; 2211. Outward flange; 23. First through hole; 3. Connecting structure; 31. Connector; 311. Connecting frame; 312. First limiting structure; 3121. First elastic protrusion; 3122. First support part; 3123. First positioning part; 313. Second limiting structure; 3131. Second elastic protrusion; 3132. Second support part; 3133. Second positioning post;

[0034] 200. Heating device;

[0035] 300, button. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] In daily life, nested, relatively expandable double-shell structures are widely used. For example, some household appliances or office equipment often use this structure to allow the shell to expand or contract, in order to meet different usage needs or storage standards.

[0040] In existing technologies, such shell structures typically involve sliding or rotating connection structures on at least one shell during actual production. However, the inclusion of these connection structures significantly increases the manufacturing cost of the shell.

[0041] In view of this, the present invention provides a shell structure, which aims to reduce the manufacturing difficulty and cost of the nested double shell structure 100.

[0042] This housing structure is applicable to various interlocking double-shell structures, such as household appliances like heaters, air purifiers, and humidifiers, as well as office equipment housings that require telescopic or opening / closing functions.

[0043] Please see Figure 1 and Figure 2 The housing structure 100 includes two nested housings, an upper housing 1 and a lower housing 2. The upper housing 1 and lower housing 2 are nested together in at least two ways: one is that the upper end of the lower housing 2 is inserted into the internal cavity of the upper housing 1 (as shown in the figure); the other is that the lower end of the upper housing 1 is inserted into the upper internal cavity of the lower housing 2 (not shown in the figure). Furthermore, the internal cavities of the upper housing 1 and lower housing 2 are interconnected, and this interconnection can be achieved in various ways. For example, the upper housing 1 and lower housing 2 form a continuous internal space after being nested together, or airflow and / or wiring can be achieved through openings or gaps in the housings. Further, to ensure that the upper housing 1 and lower housing 2 are interconnected internally and can also communicate with the outside world, the lower housing 2 is provided with a first through-hole 21, and the upper housing 1 is provided with a second through-hole 11. It can be understood that the first through-hole 21 is connected to the internal cavity of the lower housing 2 by default, and the second through-hole 11 is connected to the internal cavity of the upper housing 1 by default.

[0044] Please combine Figure 3The housing structure 100 also includes a connecting structure 3. This connecting structure 3 connects the two housings, allowing the upper housing 1 and the lower housing 2 to move vertically. The upper housing 1 has an upward position and a downward position; that is, through the connecting structure 3, the upper housing 1 can move vertically relative to the lower housing 2. Specifically, when the upper housing 1 is moved to the upward position, the relative position between the upper housing 1 and the lower housing 2 is at its highest, and the overall structure becomes larger; while when the upper housing 1 is placed in the downward position, the upper housing 1 moves downward relative to the lower housing 2, and the overall structure becomes more compact. This design, where the upper housing 1 and the lower housing 2 can slide relative to each other through the connecting structure 3 to reduce and increase volume, perfectly meets the needs of transportation and practical use. For example, when the housing structure 100 is applied to a heater, the upper housing 1 can be moved to a lower position during transportation to reduce the overall height of the heater, thereby reducing the packaging volume and transportation costs; when in use, the upper housing 1 can be raised to a preset height to increase the "chimney" effect, enabling the heating device inside the heater to achieve good air convection, thereby improving heat dissipation efficiency and heating effect.

[0045] Furthermore, the connection structure 3 includes a connector 31 disposed on one of the housings, and the connector 31 is separately disposed from the corresponding housing; that is, the connector 31 is not integrally formed with the corresponding housing, but is assembled with the housing as an independent component. For example, if the connector 31 is fixed to the upper housing 1, then the connector 31 and the upper housing 1 are separately disposed; if the connector 31 is fixed to the lower housing 2, then the connector 31 and the lower housing 2 are separately disposed.

[0046] Because the connector 31 and the corresponding shell are separate components, the complex connection structure 3 does not need to be directly machined onto the shell body during manufacturing. The independently formed connector 31 can simply be assembled with the shell. This design greatly simplifies the shell's manufacturing process, reduces the requirements for shell materials and processing equipment, and effectively controls manufacturing costs. Simultaneously, the separate connector 31 facilitates individual design optimization and replacement. When the connection structure 3 needs adjustment or is damaged, only the connector 31 needs to be replaced, eliminating the need to scrap the entire shell, further improving the product's economy and ease of maintenance. In practical applications, the connector 31 can be made of different materials and structural forms according to different connection requirements and usage scenarios to ensure the stability and smooth movement of the connection between the upper shell 1 and the lower shell 2. For example, for the shell structure 100 that requires frequent up-and-down movement, the connector 31 can be made of a material with good wear resistance and elasticity to extend its service life; for scenarios requiring high connection strength, the thickness of the connector 31 or the addition of reinforcing ribs can meet the requirements.

[0047] Specifically, at least when the upper housing 1 is in the raised position, the first through-hole 21 and the second through-hole 11 are respectively connected to the outside. This includes two scenarios: First, when the upper housing 1 is in the raised position, both the first through-hole 21 and the second through-hole 11 are connected to the outside; while when the upper housing 1 is in the lowered position, the first through-hole 21 and / or the second through-hole 11 are blocked. Second, regardless of whether the upper housing 1 is in the raised or lowered position, the first through-hole 21 and the second through-hole 11 can maintain communication with the outside. Therefore, when the housing structure 100 is in the raised position, the first through-hole 21 of the lower housing 2 can maintain air or material exchange with the external environment, and the second through-hole 11 of the upper housing 1 also has the function of communicating with the outside. This design allows an effective flow path to be formed between the interior and exterior environments of the housing, such as for heat dissipation, ventilation, or operational interaction. For example, in devices such as heaters, the communication between the first through-hole 21 and the second through-hole 11 can ensure that the heat generated by the heating device 200 can be smoothly dissipated to the external space. When the housing structure 100 is in the lowered position, the first through hole 21 and the second through hole 11 can be kept connected or partially obscured according to actual design requirements to adapt to different usage scenarios and functional requirements. For ease of understanding, please refer to the figure. The first through hole 21 is located at the top of the lower housing 2, and the second through hole 11 is located at the bottom of the upper housing 1.

[0048] In summary, the shell structure 100 provided in this embodiment includes two shells nested together and a connecting structure 3. The two shells include an upper shell 1 and a lower shell 2, with the inner cavities of the upper shell 1 and the lower shell 2 communicating with each other. The lower shell 2 is provided with a first through hole 21, and the upper shell 1 is provided with a second through hole 11. The connecting structure 3 connects the two shells, allowing the upper shell 1 and the lower shell 2 to move vertically. The upper shell 1 has an upward position and a downward position. The connecting structure 3 includes a connector 31 disposed on one shell, and the connector 31 is separately disposed from the corresponding shell. At least when the upper shell 1 is in the upward position, the first through hole 21 and the second through hole 11 are respectively connected to the outside. This embodiment simplifies the shell processing technology by adopting a separate connector 31 design, avoids the manufacturing difficulties caused by directly forming the complex connecting structure 3 on the shell body, and reduces material loss and equipment investment costs during production. Meanwhile, the split connector 31 also facilitates individual design optimization and replacement. When the connection structure 3 wears out or needs to be adapted to different models of housings, only the connector 31 needs to be adjusted or replaced accordingly, without having to redesign and manufacture the entire housing, which effectively improves product compatibility and iteration efficiency.

[0049] In some embodiments, please refer to Figure 3To facilitate the creation of complex shapes and structures on the connector 31, the connector 31 is made of injection molded material. Furthermore, to ensure the overall rigidity of the housing structure 100 and to adapt to certain high-temperature environments, the housing connected to the connector 31 is made of metal.

[0050] The specific materials used for injection molded parts and metal parts are not limited. In actual production, injection molded parts can be made of common engineering plastics such as ABS, PP, and PC. These materials have good molding performance, can meet the structural precision and surface quality requirements of connector 31, and are relatively inexpensive. Metal parts can be made of aluminum alloy, stainless steel, or cold-rolled steel sheet, depending on the strength requirements of the shell and the usage environment. Aluminum alloy is lightweight and corrosion-resistant, stainless steel has high strength and good oxidation resistance, and cold-rolled steel sheet has advantages in terms of cost and structural stability. By combining injection molded parts and metal parts, the advantages of injection molded parts in complex structure molding can be utilized, while the overall structural strength and durability of the shell can be ensured by the metal parts.

[0051] It is understood that although the material of the other housing (i.e., the housing not connected to the connector 31) is not specified in this embodiment, in actual production, the same material is usually selected to make the two housings so as to meet the same application scenarios and ensure the consistency of the overall performance and appearance of the equipment.

[0052] This utility model embodiment combines injection molded parts with metal parts, which can leverage the advantages of injection molded parts in complex structure molding, while the metal parts can ensure the overall structural strength and durability of the shell, thus achieving an optimized combination of material properties.

[0053] In some embodiments, please refer to Figure 4 To achieve stable sliding between the two housings, the connector 31 includes a connecting frame 311. Specifically, in conjunction with... Figure 3 The connecting frame 311 is connected to the lower end of the upper housing 1; and the connecting frame 311 is sleeved with the lower housing 2, and the upper housing 1 is slidably set up and down with the lower housing 2 through the connecting frame 311.

[0054] The connecting frame 311, the upper shell 1, and the lower shell 2 include at least two connection relationships: the first (as shown in the figure) is that the connecting frame 311 is fixed to the lower end of the upper shell 1, and the upper part of the lower shell 2 is inserted into the inner side of the connecting frame 311, so that the upper shell 1 can slide up and down along the outer wall of the lower shell 2 through the connecting frame 311; the second (not shown in the figure) is that the connecting frame 311 is fixed to the lower end of the upper shell 1, and the lower part of the connecting frame 311 is inserted into the inner side of the lower shell 2, so that the upper shell 1 can slide up and down along the inner wall of the lower shell 2 through the connecting frame 311.

[0055] During assembly, the connecting frame 311 can be fixedly connected to the lower end of the upper housing 1 first. The fixing method can be selected according to actual needs, such as fastening with screws, snap-fitting, welding, or gluing. After the connecting frame 311 and the upper housing 1 are assembled, the lower housing 2 is then fitted to the connecting frame 311 according to the preset fitting method. If the upper part of the lower housing 2 is inserted into the inner side of the connecting frame 311, the upper end of the lower housing 2 should be aligned with the inner opening of the connecting frame 311 and slowly inserted into the appropriate position to ensure that the outer wall of the lower housing 2 and the inner wall of the connecting frame 311 can fit tightly and slide smoothly; if the lower part of the connecting frame 311 is inserted into the inner side of the lower housing 2, the lower end of the connecting frame 311 should be aligned with the upper inner cavity opening of the lower housing 2 and inserted smoothly so that the outer wall of the connecting frame 311 fits with the inner wall of the lower housing 2.

[0056] The connecting frame 311 provides stable guidance and support for the relative sliding of the upper shell 1 and the lower shell 2, reducing problems such as offset, jamming, or shaking during the sliding process, thus ensuring the smoothness and reliability of the shell structure 100's movement. The shape and size of the connecting frame 311 can be adapted to the specific structure of the upper shell 1 and the lower shell 2. For example, if the cross-section of the upper shell 1 and the lower shell 2 is circular, the connecting frame 311 can be designed as a ring structure; if the cross-section of the shell is square or other polygonal, the connecting frame 311 can be designed as a corresponding polygonal frame. Furthermore, the inner or outer wall of the connecting frame 311 can be provided with guide ribs, slide rails, or wear-resistant coatings to further reduce sliding friction resistance, improve the smoothness of the sliding process, and extend the service life of the connecting frame 311. For example, a guide rib extending vertically is provided on the surface of the connecting frame 311 that contacts the lower housing 2, and a corresponding guide groove is provided on the lower housing 2. Through the sliding cooperation of the guide rib and the guide groove, the relative rotation of the upper housing 1 and the lower housing 2 can be precisely restricted, ensuring that the two can only slide in a straight line in a preset direction.

[0057] This embodiment of the utility model provides stable guidance and support for the relative sliding of the upper shell 1 and the lower shell 2 by setting a connecting frame 311 structure in the connector 31 and sleeve the connecting frame 311 with the lower shell 2.

[0058] In some embodiments, please refer to Figure 3 and Figure 4To adapt to certain application scenarios, such as the need to keep heaters fixed when extended to their maximum heat dissipation height, the need for stable suspension when replacing filters after the top cover of an air purifier is raised, and the need to prevent accidental slippage when office equipment is extended to its maximum storage state, the upper housing 1 needs to maintain a stable upward posture after sliding to the upper end of the lower housing 2 to avoid positional displacement due to external force or its own gravity. Therefore, a first limiting structure 312 is set on the connecting frame 311. Specifically, when the upper housing 1 is in the upward position, the first limiting structure 312 cooperates with the upper end of the lower housing 2 to restrict the vertical movement of the upper housing 1, thereby positioning the upper housing 1 in the upward position.

[0059] To achieve positioning, the first limiting structure 312 can take various forms. For example, the first limiting structure 312 can be configured as an elastic buckle. When the connecting frame 311 slides with the upper housing 1 to the upper end of the lower housing 2, the buckle, under its own elastic force, engages in a preset limiting groove or other engaging part of the lower housing 2, thereby preventing the upper housing 1 from sliding further downward. Alternatively, the first limiting structure 312 can be designed as a mating structure of a protrusion and a stepped surface. After the upper housing 1 is raised to its position, the protrusion on the connecting frame 311 abuts against the stepped surface at the upper end of the lower housing 2, forming a mechanical limit. Furthermore, the first limiting structure 312 can also employ a magnetic attraction component. Magnets and iron plates are respectively placed at corresponding positions on the connecting frame 311 and the lower housing 2. When the upper housing 1 reaches the raised position, the magnetic attraction components attract each other to achieve positioning. These different types of first limiting structures 312 can be selected according to the product's usage requirements, cost budget, and assembly process. Their core function is to ensure that the upper housing 1 can be stably held in the raised position without additional operation, providing reliable structural support for the normal operation of the equipment. In addition, to facilitate the switching of the upper housing 1 from the positioned state to the lowered position, the first limiting structure 312 can also be designed to be unlockable, such as by pressing the buckle to disengage it from the limiting groove, or by rotating the unlocking protrusion to engage with the stepped surface, thereby improving the convenience of user operation.

[0060] In this embodiment of the utility model, a first limiting structure 312 is provided on the connecting frame 311 so that it cooperates with the upper end of the lower shell 2 to achieve stable positioning of the upper shell 1 in the raised position.

[0061] In some embodiments, please refer to Figure 5 and Figure 6To achieve positioning, the first limiting structure 312 is specifically designed as an elastic buckle. Specifically, the upper housing 1 is sleeved around the lower housing 2, and the connecting frame 311 is located on the inner side of the lower end of the upper housing 1. The first limiting structure 312 includes a first elastic protrusion 3121 and a first support 3122. The first elastic protrusion 3121 is located on the connecting frame 311 and extends towards the inner side of the connecting frame 311 ("towards the inner side of the connecting frame 311" can be understood as the direction towards the internal central area of ​​the connecting frame 311). The first elastic protrusion 3121 is elastically movable laterally on the connecting frame 311. The first support 3122 is located on the connecting frame 311 and extends upwards from the connecting frame 311, with the first support 3122 located below the first elastic protrusion 3121. The upper end of the lower housing 2 is provided with a first mating part 22 (please refer to...). Figure 7 and Figure 9 When the upper housing 1 is in the raised position, the first elastic protrusion 3121 abuts against the upper side of the first mating part 22, and the first support part 3122 abuts against the lower side of the first mating part 22.

[0062] The first elastic protrusion 3121 can be a cantilever structure with a certain elastic deformation capability. One end of it is connected to the main body of the connecting frame 311, and the other end extends into the central area of ​​the connecting frame 311 to form a free end. The end of the free end can be provided with an arc-shaped or inclined guide surface so that when the connecting frame 311 and the lower housing 2 are sleeved and slid, the first elastic protrusion 3121 can smoothly contact the outer wall of the lower housing 2 and undergo elastic deformation. The first support 3122 can be designed as a rib or boss structure extending upward from the top wall of the connecting frame 311. A certain gap is formed between its top end face and the lower surface of the first elastic protrusion 3121. The size of the gap is adapted to the thickness of the first mating part 22 at the upper end of the lower housing 2, so as to ensure that when the upper housing 1 is raised to the position, the first elastic protrusion 3121 and the first support 3122 can stably clamp the first mating part 22 from the upper and lower sides respectively. The first mating part 22 can be a strip-shaped or plate-shaped protrusion provided on the outer peripheral surface of the upper end of the lower housing 2. The protrusion extends circumferentially along the lower housing 2, and its upper and lower surfaces are both flat, so as to fit tightly with the first elastic protrusion 3121 and the first support part 3122.

[0063] In actual use, when the connecting frame 311 slides upward along the outer wall of the lower housing 2 with the upper housing 1, the guide surface of the first elastic protrusion 3121 first contacts the outer wall of the lower housing 2. As the sliding continues, the outer wall of the lower housing 2 applies outward pressure to the first elastic protrusion 3121, causing the first elastic protrusion 3121 to undergo elastic deformation and contract inward toward the connecting frame 311. When the connecting frame 311 slides to the upper end of the lower housing 2 and the first elastic protrusion 3121 reaches the position of the first mating part 22, the pressure from the outer wall disappears, and it pops out toward the inside of the connecting frame 311 under the action of its own elastic restoring force. At this time, the lower surface of the first elastic protrusion 3121 abuts against the upper side of the first mating part 22, while the upper surface of the first support part 3122 abuts against the lower side of the first mating part 22. Through this clamping method, the first mating part 22 is firmly restricted between the first elastic protrusion 3121 and the first support part 3122, thereby achieving reliable positioning of the upper housing 1 in the raised position.

[0064] The specific core principle of the snap-fit ​​is as follows: the clamping space formed by the first elastic protrusion 3121 and the first support 3122 has a size that matches the thickness of the first mating part 22; when the first elastic protrusion 3121 is reset under the action of elastic restoring force, it together with the first support 3122 constitutes a bidirectional limiting of the first mating part 22.

[0065] This embodiment of the utility model provides a cantilevered first elastic protrusion 3121 and an upwardly extending first support 3122 on the connecting frame 311, which together with the first mating part 22 at the upper end of the lower housing 2 to form a bidirectional limiting structure for clamping, thereby achieving stable positioning of the upper housing 1 in the raised position and making operation convenient.

[0066] In some embodiments, please refer to Figure 5 To facilitate guidance during snap-fitting and positioning after snap-fitting, a first through hole 23 was added (please refer to...). Figure 7 and Figure 9 The first fitting part 22 has a first through hole 23; the first limiting structure 312 also includes a first positioning post 3123 located at the upper end of the first support part 3122 and extending upward; when the upper housing 1 is in the raised position, the first positioning post 3123 passes through the first through hole 23.

[0067] The specific guiding and positioning principle is as follows: As the connecting frame 311 drives the upper housing 1 to slide continuously upward along the outer wall of the lower housing 2, the first positioning post 3123 at the upper end of the first support part 3122 will first align with the first through hole 23 on the first mating part 22. Before the first elastic protrusion 3121 is fully reset and engaged, the first positioning post 3123 has already begun to insert into the first through hole 23, and its outer peripheral surface contacts the inner wall of the first through hole 23, playing a preliminary guiding role to ensure that the first elastic protrusion 3121 can accurately contact the corresponding position on the upper side of the first mating part 22. When the first elastic protrusion 3121 abuts against the upper side of the first mating part 22 under the action of elastic restoring force, the first positioning post 3123 just completely penetrates the first through hole 23, and its top end can be higher than or flush with the upper surface of the first mating part 22; at this time, the first positioning post 3123 restricts the relative swaying of the upper housing 1 and the lower housing 2 in the horizontal direction.

[0068] In this embodiment of the utility model, the first positioning post 3123 cooperates with the first through hole 23 to play a guiding role during the snap-fit, ensuring that the first elastic protrusion 3121 and the first support 3122 are accurately aligned with the first mating part 22, thus facilitating the completion of the snap-fit. After the snap-fit ​​is completed, the radial relative displacement of the upper and lower shells 2 is restricted by the cooperation of the post hole, preventing the shells from swaying horizontally due to vibration or external force interference, and making the upward posture of the upper shell 1 more stable.

[0069] In some embodiments, please refer to Figure 5 and Figure 6 To achieve a more stable engagement, the engagement positions of the first elastic protrusion 3121, the first support portion 3122, and the first mating portion 22 have been optimized. Specifically, the first mating portion 22 includes at least one first external protrusion 221, and both the first elastic protrusion 3121 and the first support portion 3122 abut against the same first external protrusion 221; or, the first mating portion 22 includes multiple first external protrusions 221, and both the first elastic protrusion 3121 and the first support portion 3122 abut against multiple first external protrusions 221.

[0070] In other words, one or more first protrusions 221 can be provided. When multiple first protrusions 221 are provided, the first elastic protrusion 3121 and the first support 3122 can work together on the same first protrusion 221 to achieve vertical clamping and positioning; or they can work separately on different first protrusions 221. For example, the first elastic protrusion 3121 abuts against the upper side of one of the first protrusions 221, and the first support 3122 abuts against the lower side of another first protrusion 221. The stability of positioning is enhanced through the coordinated cooperation of multiple first protrusions 221.

[0071] When only one first external protrusion 221 is provided, the first external protrusion 221 can be provided around the entire circumference of the lower housing 2 to form an annular protrusion structure. In this case, the first elastic protrusion 3121 and the first support 3122 can clamp it at the same circumferential position of the connecting frame 311. This design allows the positioning force to be evenly distributed throughout the entire annular area, avoiding structural deformation or positioning failure caused by localized stress concentration. When multiple first external protrusions 221 are provided (e.g....) Figure 5 As shown, these first protrusions 221 can be evenly distributed along the circumference of the lower housing 2 or non-uniformly distributed according to the force requirements, so as to ensure that the upper housing 1 can be subjected to a balanced clamping force when it is in the raised position, and avoid structural deformation or positioning failure caused by excessive force at a single point.

[0072] This embodiment of the utility model optimizes the snap-fit ​​position of the first elastic protrusion 3121, the first support 3122 and the first mating part 22, and uses one or more first external protrusions 221 to enhance the stability and reliability of the upper and lower clamping and positioning by using the same external protrusion for clamping or different external protrusions for cooperative cooperation.

[0073] In some embodiments, please refer to Figure 7 and Figure 9 To reduce the use of threaded fasteners and to give the first outward protrusion 221 a certain degree of elasticity, the first outward protrusion 221 is designed to include a structure formed directly by a flange at the upper end of the lower housing 2. Specifically, the first outward protrusion 221 includes an outward flange 2211 formed at the upper end of the lower housing 2, and a first elastic protrusion 3121 (please refer to...). Figure 6 The first support portion 3122 abuts against the upper surface of the outer flange 2211 and the lower surface of the outer flange 2211.

[0074] The outer flange 2211 can be formed directly on the upper edge of the lower housing 2 by a stamping process. The folding angle and height of the outer flange 2211 can be adapted to the position of the first elastic protrusion 3121 and the first support 3122. For example, as shown in the figure, the folding angle is 90 degrees, and the upper and lower surfaces of the outer flange 2211 can form a flat mating surface to ensure a tight fit with the first elastic protrusion 3121 and the first support 3122.

[0075] In this embodiment of the utility model, the first protrusion 221 is designed as an outward flange 2211 structure at the upper end of the lower shell 2, which not only facilitates assembly but also has elastic deformation capability, thereby enhancing the buffer performance of the snap-fit ​​structure.

[0076] In some embodiments, please refer to Figure 4 To secure the connecting frame 311 to the lower end of the upper housing 1, a second limiting structure 313 is added to the connecting frame 311. For details, please refer to... Figure 5 and Figure 6 The upper housing 1 is sleeved around the lower housing 2, and the connecting frame 311 is located on the inner side of the lower end of the upper housing 1; the second limiting structure 313 cooperates with the lower end of the upper housing 1 to restrict the connecting frame 311 from moving up and down relative to the upper housing 1.

[0077] The second limiting structure 313 is similar to the first limiting structure 312 in structure and limiting principle, and will not be described in detail here. The differences are as follows: First, the second limiting structure 313 acts between the connecting frame 311 and the upper shell 1, aiming to restrict their relative movement in the vertical direction to ensure that the connecting frame 311 and the upper shell 1 form a stable integral structure. Second, regardless of whether the upper shell 1 is in the raised or lowered position, the second limiting structure 313 will restrict the vertical movement of the connecting frame 311 relative to the upper shell 1.

[0078] In this embodiment of the utility model, a second limiting structure 313 is provided on the outside of the connecting frame 311, which cooperates with the lower end of the upper shell 1 to restrict the vertical movement of the connecting frame 311 relative to the upper shell 1, thereby achieving a stable connection.

[0079] In some embodiments, please combine Figure 5 and Figure 6 When the upper housing 1 is fitted onto the outside of the lower housing 2, to enhance the aesthetics and reduce the use of screws, the connecting frame 311 and the upper housing 1 are also connected by a snap-fit ​​method. Specifically, the second limiting structure 313 includes a second elastic protrusion 3131 and a second support portion 3132. The second elastic protrusion 3131 is provided on the connecting frame 311 and extends outward from the connecting frame 311 (the outward of the connecting frame 311 can be understood as the direction away from the internal central area of ​​the connecting frame 311); the second support portion 3132 is provided on the connecting frame 311 and extends outward from the connecting frame 311; and the lower end of the upper housing 1 is provided with a second mating portion 12, the second elastic protrusion 3131 abuts against the upper side of the second mating portion 12, and the second support portion 3132 abuts against the lower side of the second mating portion 12.

[0080] The connection structure 3 between the second elastic part, the second support part 3132 and the second limiting part is similar in principle and will not be described in detail here.

[0081] This embodiment of the invention achieves a screwless connection between the connecting frame 311 and the upper housing 1 by providing a second elastic protrusion 3131 and a second support portion 3132 on the connecting frame 311, which forms a snap-fit ​​structure with the second mating portion 12 at the lower end of the upper housing 1. This snap-fit ​​method not only simplifies the assembly process and reduces the number of parts, but also avoids the problem of exposed screws affecting the overall aesthetics of the product.

[0082] In some embodiments, please refer to Figure 5 and Figure 6To facilitate guidance during snap-fitting and positioning after snap-fitting, a second through hole 23 was added (please refer to...). Figure 7 and Figure 8 The second positioning post 3133 is provided. Specifically, the second mating part 12 is formed with a second through hole 23; the second limiting structure 313 also includes a second positioning post 3133 located at the upper end of the second support part 3132 and extending upward; when the upper housing 1 is in the raised position, the second positioning post 3133 passes through the second through hole 23.

[0083] The guiding and positioning principles of the second through hole 23 and the second positioning post 3133 are similar to those of the first through hole 23 and the first positioning post 3123 in the above embodiment, and will not be described again here.

[0084] In this embodiment of the invention, the second positioning post 3133 engages with the second through hole 23, which acts as a guide when the connecting frame 311 and the upper housing 1 are engaged. This ensures that the second elastic protrusion 3131 and the second support 3132 are accurately aligned with the second mating part 12, facilitating a smooth engagement. After engagement, the post-hole engagement further restricts the relative horizontal displacement of the two components, preventing radial swaying due to vibration or external interference, making the connection more stable and reliable, and improving the overall structural stability.

[0085] In some embodiments, please refer to Figure 7 and Figure 8 To improve the flatness of the upper shell 1, the second mating part 12 is formed by the inward flange 14 of the upper shell 1. Specifically, the lower end of the upper shell 1 is provided with a folding body 13 and an inner flange 14. The folding body 13 folds inward and upward from the lower end of the upper shell 1; the inner flange 14 is located at the upper end of the folding body 13 and folds inward (inward can be understood as towards the internal central area of ​​the connecting frame 311). The second mating part 12 includes the inner flange 14; the connecting frame 311 is located inside the folding body 13; the second elastic protrusion 3131 abuts against the upper side of the inner flange 14, and the second support part 3132 abuts against the lower side of the inner flange 14.

[0086] The folding body 13 and the inner flange 14 can be integrally formed by stamping. The height of the folding body 13 and the extension length of the inner flange 14 can be adapted to the size of the connecting frame 311 and the positions of the second elastic protrusion 3131 and the second support 3132. The height of the folding body 13 is adapted to the height of the connecting frame 311, which can provide installation space for the connecting frame 311.

[0087] This utility model embodiment designs the lower end of the upper shell 1 as a folding body 13 and an inner flange 14, so that the second mating part 12 is hidden inside the upper shell 1, and a continuous flat surface is formed on the outside of the upper shell 1, which effectively improves the flatness and aesthetics of the product.

[0088] This utility model embodiment also provides a heater.

[0089] Please see Figure 10 and Figure 11 The heater includes a heating element 200 and the aforementioned housing structure 100, with the heating element 200 housed within the lower housing structure 100. The heating element 200 can be a heating element such as a heating tube, heating wire, or graphene heating film, and is fixed to the internal cavity of the lower housing 2 by a bracket. When the upper housing 1 is in the raised position, as shown in the figure, this position facilitates the formation of a chimney effect, while maintaining a greater distance between the top of the upper housing 1 and the heating element 200, thus complying with safety regulations. When the lower housing 2 is in the lowered position, refer to... Figure 2 At this point, the structure is compact and easy to transport.

[0090] In some embodiments, please refer to Figure 10 To enhance safety, the heater cannot be activated when the upper housing 1 is not raised. Specifically, the upper housing 1 is fitted over the lower housing 2, and the heater's button 300 is located on the lower housing 2. When the upper housing 1 is in the lowered position, the upper housing 1 covers the button 300; when the upper housing 1 is in the raised position, the button 300 is exposed.

[0091] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A shell structure for use in a heater, characterized in that, include: Two shells are nested together, the two shells comprising an upper shell and a lower shell, the inner cavities of the upper shell and the lower shell communicating with each other, the lower shell having a first through hole, and the upper shell having a second through hole; and, A connecting structure is provided between the two housings so that the upper housing and the lower housing can be moved vertically. The upper housing has an upward position and a downward position. The connecting structure includes a connector disposed on one of the housings. The connector is separately disposed from the corresponding housing. Specifically, at least when the upper housing is in the raised position, the first through hole and the second through hole are respectively connected to the outside.

2. The shell structure according to claim 1, characterized in that, The connector is an injection molded part, and the housing corresponding to the connector is a metal part.

3. The shell structure according to claim 1 or 2, characterized in that, The connector includes a connecting frame, which is connected to the lower end of the upper housing; The connecting frame is sleeved with the lower housing, and the upper housing is slidably disposed above and below the lower housing via the connecting frame.

4. The shell structure according to claim 3, characterized in that, The connecting frame is provided with a first limiting structure. When the upper shell is in the raised position, the first limiting structure cooperates with the upper end of the lower shell to restrict the upper shell from moving up and down, so as to position the upper shell in the raised position.

5. The shell structure according to claim 4, characterized in that, The upper housing is sleeved around the lower housing, and the connecting frame is disposed on the inner side of the lower end of the upper housing; The first limiting structure includes: A first elastic protrusion is provided on the connecting frame and extends inward toward the connecting frame; the first elastic protrusion is elastically movable in the lateral direction of the connecting frame; and, A first support portion is provided on the connecting frame and extends upward toward the connecting frame, and the first support portion is located below the first elastic protrusion; The upper end of the lower housing is provided with a first mating part. When the upper housing is in the raised position, the first elastic protrusion abuts against the upper side of the first mating part, and the first support part abuts against the lower side of the first mating part.

6. The shell structure according to claim 5, characterized in that, The first mating part has a first through hole; the first limiting structure also includes a first positioning post located at the upper end of the first support part and extending upward; when the upper housing is in the raised position, the first positioning post passes through the first through hole.

7. The shell structure according to claim 5, characterized in that, The first mating portion includes at least one first outward protrusion, wherein both the first elastic protrusion and the first supporting portion abut against the same first outward protrusion; or, The first mating part includes a plurality of first protrusions, and the first elastic protrusion and the first supporting part abut against the plurality of first protrusions.

8. The shell structure according to claim 7, characterized in that, The first protrusion includes an outward flange formed at the upper end of the lower housing, the first elastic protrusion abuts against the upper surface of the outward flange, and the first support portion abuts against the lower surface of the outward flange.

9. The shell structure according to claim 3, characterized in that, The upper housing is sleeved around the lower housing, and the connecting frame is disposed on the inner side of the lower end of the upper housing; The connecting frame is also provided with a second limiting structure, which cooperates with the lower end of the upper shell to restrict the vertical movement of the connecting frame relative to the upper shell.

10. The shell structure according to claim 9, characterized in that, The second limiting structure includes: A second elastic protrusion is provided on the connecting frame and extends outward from the connecting frame; and, The second support portion is provided on the connecting frame and extends to the outside of the connecting frame; The lower end of the upper housing is provided with a second mating part, the second elastic protrusion abuts against the upper side of the second mating part, and the second support part abuts against the lower side of the second mating part.

11. The shell structure according to claim 10, characterized in that, The lower end of the upper housing is provided with: The folding body folds inward and upward from the lower end of the upper shell; An inner flange is provided at the upper end of the folding body and folds inward; the second mating part includes the inner flange. The connecting frame is disposed on the inner side of the folding body; the second elastic protrusion abuts against the upper side of the inner flange, and the second support abuts against the lower side of the inner flange.

12. A heater, characterized in that, include: The shell structure as described in any one of claims 1 to 11; as well as, The heating device is located inside the lower housing structure.

13. The heater as described in claim 12, characterized in that, The upper housing is fitted over the outside of the lower housing, and the button of the heater is located on the lower housing; when the upper housing is in the lowered position, the upper housing covers the button; when the upper housing is in the raised position, the button is exposed.

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