An electronic device

CN224670065UActive Publication Date: 2026-08-21JIAXING DERUCCI SMART HOME CO LTD
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Patent Information

Application Number
CN202521763047.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-19
Publication Date
2026-08-21
Estimated Expiration
2035-08-19

AI Technical Summary

Technical Problem

[0005]本实用新型的目的在于提供一种电子设备,以解决现有技术中存在的电子设备的壳体结构刚性连接导致交互性差、适应性差的技术问题

Benefits of technology

[0021]The electronic device proposed in this invention features a floating snap-fit ​​structure between the first and second housings. Combined with opposing elastic and support components, when the user applies an operational force to the second housing, the second housing shifts towards the first housing, compressing the elastic component. This allows the elastic component to absorb impact energy and create a buffer stroke, thereby reducing the impact force transmitted to the internal electronic components and effectively preventing damage from external impacts. Simultaneously, after the initial force is removed, the compressed elastic component automatically releases its elastic potential energy, pushing the support component and the second housing back to their initial positions. This not only achieves automatic reset but also provides the user with a smooth tactile feedback, improving the smoothness and controllability of the interactive operation. This structure allows the housing to generate flexible displacement within a controlled range, ensuring the overall stability of the housing assembly and giving the electronic device a flexible response capability that adapts to different operating forces and frequencies. This overcomes the defects of rigid housing structures, such as stiff interaction, difficult reset, and component fragility.

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Abstract

The utility model discloses an electronic equipment belongs to electronic equipment technical field, including first casing and second casing, and first casing is equipped with elastic part, and second casing is equipped with support piece, and first casing and second casing float buckling installation, and elastic part and support piece are opposite and set up, when the first action of applying to second casing, second casing moves to first casing, and support piece compresses elastic part, when the first action of removing at least part to second casing, elastic part pushes support piece and moves away from first casing, and second casing moves away from first casing. The electronic equipment makes the casing produce flexible displacement in the controlled range, guarantees the overall stability of casing assembly, and also gives the flexible response ability of electronic equipment adapting to different operation strength and frequency, thereby overcome the defect that the rigid casing structure leads to the interaction stiff, reset difficult and element easy to damage.
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Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to an electronic device. Background Technology

[0002] In the field of electronic equipment manufacturing, especially for smart home devices such as interactive control panels and smart switches, the casing is typically composed of two shells, one above the other, which house electronic components such as circuit boards. These devices often require user interaction through pressing, touching, or other operations, so the casing structure must balance installation stability and operational responsiveness.

[0003] The common method for assembling housing structures involves creating holes on the edges of two housings and directly locking them together with screws or bolts, thus forming a rigid whole with no relative space between them. Electronic components are typically fixed inside one of the housings, while the inner surface of the other housing maintains a fixed distance from the electronic components.

[0004] However, the rigid connection of the shell structure prevents relative displacement between the two shells. When the user applies interactive operations such as pressing or tapping, the external force is directly transmitted to the electronic components, which can easily damage them. At the same time, the operation process lacks buffered feedback, resulting in a stiff feel and the inability to achieve automatic reset, making it difficult to meet the diverse touch operation needs of smart devices. Utility Model Content

[0005] The purpose of this invention is to provide an electronic device that solves the technical problems of poor interactivity and poor adaptability caused by the rigid connection of the shell structure of existing electronic devices.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] An electronic device, comprising:

[0008] The first housing is equipped with an elastic element;

[0009] The second housing is provided with a support member; the first housing and the second housing are floatingly fastened together, and the elastic member is disposed opposite to the support member;

[0010] When a first force is applied to the second housing, the second housing moves toward the first housing, and the support compresses the elastic member; when at least part of the first force is removed from the second housing, the elastic member pushes the support member away from the first housing, and the second housing moves away from the first housing.

[0011] Preferably, the second housing has a receiving cavity, the support member is disposed on the surface of the receiving cavity, and the first housing is at least partially disposed within the receiving cavity.

[0012] Preferably, the first housing has a raised edge that extends toward the accommodating cavity.

[0013] Preferably, the surface of the receiving cavity is provided with a locking block, and the surface of the protruding edge is provided with a locking groove, and the locking block is engaged with the locking groove.

[0014] Preferably, the surface of the card block forms a guide surface.

[0015] Preferably, the first housing has a groove extending toward the cavity, and the surface of the cavity has a limiting ring extending toward the first housing. When the first housing and the second housing move relative to each other, the limiting ring at least partially abuts against the groove.

[0016] Preferably, the surface of the accommodating cavity is provided with a positioning post extending toward the first housing, and the first housing is provided with a positioning hole. When the first housing and the second housing move relative to each other, the positioning post is at least partially inserted into the positioning hole.

[0017] Preferably, the elastic element includes an elastic arm that extends outward from the surface of the first housing and at least partially extends beyond the surface of the first housing.

[0018] Preferably, the elastic element further includes a connecting arm that connects the elastic arm and the surface of the first housing.

[0019] Preferably, the first housing is provided with a receiving portion, which at least partially accommodates the elastic member when the support member compresses the elastic member.

[0020] The beneficial effects of this utility model are:

[0021] The electronic device proposed in this invention features a floating snap-fit ​​structure between the first and second housings. Combined with opposing elastic and support components, when the user applies an operational force to the second housing, the second housing shifts towards the first housing, compressing the elastic component. This allows the elastic component to absorb impact energy and create a buffer stroke, thereby reducing the impact force transmitted to the internal electronic components and effectively preventing damage from external impacts. Simultaneously, after the initial force is removed, the compressed elastic component automatically releases its elastic potential energy, pushing the support component and the second housing back to their initial positions. This not only achieves automatic reset but also provides the user with a smooth tactile feedback, improving the smoothness and controllability of the interactive operation. This structure allows the housing to generate flexible displacement within a controlled range, ensuring the overall stability of the housing assembly and giving the electronic device a flexible response capability that adapts to different operating forces and frequencies. This overcomes the defects of rigid housing structures, such as stiff interaction, difficult reset, and component fragility. Attached Figure Description

[0022] Figure 1 This is an exploded structural diagram of the electronic device provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the electronic device provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the second housing provided in an embodiment of the present invention;

[0025] Figure 4 This is a bottom view of the second housing provided in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the first housing provided in an embodiment of the present utility model;

[0027] Figure 6 This is a top view of the first housing provided in an embodiment of the present utility model.

[0028] In the picture:

[0029] 1. First housing; 11. Elastic element; 111. Elastic arm; 112. Connecting arm; 12. Protruding edge; 13. Slot; 14. Slot edge; 15. Positioning hole; 16. Receiving part;

[0030] 2. Second housing; 21. Support member; 22. Accommodating cavity; 23. Locking block; 231. Guide surface; 24. Positioning post; 25. Limiting ring. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] See Figures 1 to 6 The electronic device provided in this embodiment of the present invention includes a first housing 1 and a second housing 2. The first housing 1 is provided with an elastic element 11; the second housing 2 is provided with a support element 21; the first housing 1 and the second housing 2 are floatingly fastened together, with the elastic element 11 and the support element 21 disposed opposite to each other; when a first force is applied to the second housing 2, the second housing 2 moves toward the first housing 1, and the support element 21 compresses the elastic element 11; when at least part of the first force is removed from the second housing 2, the elastic element 11 pushes the support element 21 away from the first housing 1, and the second housing 2 moves away from the first housing 1.

[0036] The electronic device proposed in this utility model adopts a floating fastening installation structure for the first housing 1 and the second housing 2, in conjunction with the oppositely arranged elastic element 11 and support element 21. When the user applies a first force to the second housing 2, the second housing 2 can displace towards the first housing 1 and compress the elastic element 11, allowing the elastic element 11 to absorb impact energy and form a buffer stroke, thereby reducing the impact force transmitted to the internal electronic components and effectively preventing damage to the electronic components due to external impact. At the same time, after the first force is removed, the compressed elastic element 11 can automatically release its elastic potential energy, pushing the support element 21 and the second housing 2 back to their initial positions. This not only realizes the automatic reset function of operation, but also provides the user with a soft tactile feedback feel, improving the smoothness and controllability of interactive operation. This structure allows the housing to generate flexible displacement within a controlled range, ensuring the overall stability of the housing assembly and giving the electronic device a flexible response capability to adapt to different operating forces and frequencies, thereby overcoming the defects of rigid housing structures such as stiff interaction, difficult reset, and easy component damage.

[0037] It is worth noting that, in the following text, the electronic device is placed on a horizontal plane as an example. The first housing 1 is located at the lower part of the electronic device, while the second housing 2 is located at the upper part of the electronic device. For the convenience of describing in conjunction with the accompanying drawings, the directions in the following text are described in accordance with the directions shown in the accompanying drawings, but are not limited by them.

[0038] The specific structure and working principle of this electronic device will be described in detail below.

[0039] The first housing 1 and the second housing 2 are interlocked and connected, thereby achieving the effect of accommodating electronic components and other parts within the cavity formed by the first housing 1 and the second housing 2.

[0040] Optionally, the first housing 1 can be fastened to and cover the second housing 2, or the second housing 2 can be fastened to and cover the first housing 1. Under different application scenarios or design requirements, the fastening method of the first housing 1 and the second housing 2 can be adaptively selected according to the actual situation to optimize the product's appearance, layout, and internal space utilization.

[0041] In this embodiment, the second housing 2 has a receiving cavity 22, and the support member 21 is disposed on the surface of the receiving cavity 22. The first housing 1 is at least partially disposed within the receiving cavity 22. By fastening and wrapping the second housing 2 around the outside of the first housing 1, the second housing 2 directly faces the user's operating direction during use. The top surface and side walls fully covered by the second housing 2 make the pressing operation area more ergonomic and improve touch convenience. In addition, since the top surface of the second housing 2 maintains a continuous and seamless flat appearance, it not only enhances the visual integrity of the electronic device and avoids the sense of fragmentation caused by assembly gaps on the operating surface, but also achieves a buffer function while taking into account aesthetics and practical protection. This keeps the connection seam between the first housing 1 and the second housing 2 away from the user's operating area, making it difficult for dust, water, and other impurities to fall directly into it, effectively reducing the possibility of impurities entering the interior of the electronic device.

[0042] Furthermore, the first housing 1 is provided with a protruding edge 12, which extends toward the receiving cavity 22. In this embodiment, firstly, the protruding edge 12 extends outward perpendicular to the plane of the first housing 1 and into the receiving cavity 22. The outer wall of the protruding edge 12 fits against the inner wall of the receiving cavity 22, ensuring that the second housing 2 maintains a vertical displacement trajectory during pressing, effectively eliminating housing tilting or jamming caused by uneven force. Secondly, the protruding edge 12 also increases the contact area between the first housing 1 and the second housing 2, making the connection between the two more stable and enhancing the reliability of their floating fastening installation, making it less likely for the electronic device to separate due to shaking or collision during daily use. In addition, the continuous structure extending circumferentially by the protruding edge 12 forms a tortuous dustproof channel at the floating gap, improving the sealing of the connection gap between the first housing 1 and the second housing 2 through physical blocking, reducing the possibility of external dust seeping into the receiving cavity 22 along the displacement gap.

[0043] It is understandable that the top of the protruding edge 12 and the top wall of the accommodating cavity 22 form a clearance fit in the initial position, which not only provides a buffer stroke for the compression of the elastic element 11, but also forms a rigid limit at the maximum pressing position to prevent the elastic element 11 from being permanently deformed or broken due to excessive pressing.

[0044] Furthermore, the surface of the receiving cavity 22 is provided with a locking block 23, and the surface of the protruding edge 12 is provided with a locking groove 13, with the locking block 23 engaging with the locking groove 13. Through the cooperation between the locking block 23 and the locking groove 13, a positioning mechanism is formed during the floating fastening installation process, so that when the protruding edge 12 is inserted into the receiving cavity 22, a clear assembly feedback is generated through the locking action, thereby improving production assembly efficiency and yield.

[0045] It is understood that the locking block 23 can move along the movement direction of the second housing 2 within the slot 13 and is limited by the inner wall at the end of the slot 13. Thus, when the electronic device is in operation, the locking action of the locking block 23 and the slot 13 limits the floating stroke of the second housing 2 within the preset range of the slot 13, effectively preventing the second housing 2 from accidentally dislodging under vibration or tilting conditions. At the same time, it maintains the parallel guiding relationship between the protrusion 12 and the inner wall of the accommodating cavity 22, ensuring that the second housing 2 always moves smoothly in a direction perpendicular to the first housing 1 during the pressing operation.

[0046] In some embodiments, the surface of the accommodating cavity 22 may be provided with a slot 13, and the surface of the protruding edge 12 may be provided with a corresponding locking block 23. The locking block 23 engages with the slot 13 to achieve a floating limiting function. However, it should be noted that when the wall thickness of the second housing 2 is relatively thin, if the slot 13 is only opened on the inner wall of the accommodating cavity 22 without penetrating the second housing 2, its structural strength may not be able to meet the locking and fitting requirements. On the other hand, if a slotting method is adopted that penetrates the side wall of the accommodating cavity 22, although the locking block 23 can be inserted, it will cause the locking block 23 to be exposed on the surface of the electronic device, which will not only destroy the overall integrity and aesthetics of the housing, but may also form a dust accumulation area. Therefore, the specific setting position of the slot 13 and the locking block 23 needs to be adaptively adjusted according to the actual wall thickness of the second housing 2, taking into account the appearance integrity while ensuring structural strength and assembly reliability. The relevant implementation methods can be flexibly selected according to specific product requirements and are not limited here.

[0047] Preferably, a guide surface 231 is formed on the surface of the locking block 23. During installation, the guide surface 231 can guide the locking groove 13 on the protruding edge 12 to accurately align with the locking block 23, making the locking operation smoother, eliminating the need for repeated adjustments, and improving assembly efficiency. Moreover, the guide surface 231 can reduce the possible jamming or misalignment when the locking block 23 contacts the locking groove 13, ensuring that the locking block 23 can smoothly engage with the locking groove 13, enhancing the tightness and accuracy of the connection between the first housing 1 and the second housing 2.

[0048] The guide surface 231 can be a guide slope, a guide arc surface, or a guide curved surface, etc. Its specific form is not limited here. It only needs to be able to guide the card block 23 to achieve the card engagement with the card slot 13 during the assembly process of the first housing 1 and the second housing 2.

[0049] After the first housing 1 and the second housing 2 are installed in a floating fastening manner, when a first force is applied to the second housing 2 during use, the second housing 2 can move toward the first housing 1.

[0050] To improve the stability of the relative movement between the second housing 2 and the first housing 1, the first housing 1 is provided with a groove 14 extending toward the accommodating cavity 22, and a limiting ring 25 extending toward the first housing 1 is provided on the surface of the accommodating cavity 22. When the first housing 1 and the second housing 2 move relative to each other, the limiting ring 25 at least partially abuts against the groove 14. In this embodiment, the groove 14 extends outward perpendicular to the plane of the first housing 1 and extends into the accommodating cavity 22. When the second housing 2 is compressed and displaced relative to the first housing 1, the inner wall of the limiting ring 25 and the outer wall of the groove 14 maintain continuous sliding contact, guiding the second housing 2 to move smoothly in a direction perpendicular to the first housing 1 through radial constraint, thereby avoiding radial displacement and deflection of the second housing 2 and improving the stability of the second housing 2 during movement. At the same time, the groove 14 can form an accommodating space, which plays a limiting and fixing role for electronic components and other parts installed in the first housing 1, making the position of the electronic components in the first housing 1 more stable and preventing the electronic components from shifting due to vibration and shaking during equipment use.

[0051] Furthermore, the surface of the accommodating cavity 22 is provided with a positioning post 24 extending toward the first housing 1. The first housing 1 is provided with a positioning hole 15. When the first housing 1 and the second housing 2 move relative to each other, the positioning post 24 is at least partially inserted into the positioning hole 15. During the assembly process of the electronic device, the cooperation between the positioning post 24 and the positioning hole 15 plays a precise positioning role, enabling the first housing 1 and the second housing 2 to be assembled quickly and accurately, improving assembly efficiency and reducing assembly difficulty and the probability of errors. Moreover, the insertion of the positioning post 24 into the positioning hole 15 enhances the stability of the connection between the first housing 1 and the second housing 2. In daily use of the device, it can better resist external impacts and vibrations, reduce the relative displacement of the housings caused by shaking, and ensure the stability of the electronic device structure. In addition, when the second housing 2 is subjected to pressure and movement, the positioning post 24 always maintains a sliding fit within the positioning hole 15, thereby guiding the second housing 2 to move in the vertical direction and effectively suppressing the tendency of the second housing 2 to tilt or twist.

[0052] When the first force is applied to the second housing 2, the second housing 2 moves toward the first housing 1 and compresses the elastic member 11 through the support member 21, so that the elastic member 11 undergoes elastic deformation, in preparation for the subsequent reset of the second housing 2 driven by the elastic member 11.

[0053] In this embodiment, the support member 21 adopts a ring-shaped design that protrudes towards the elastic member 11, ensuring that each elastic member 11 can obtain uniform and directional compressive force transmission.

[0054] It should be noted that in other embodiments, the support member 21 can be adapted to an arc-shaped segment structure, a dispersed block structure, a columnar boss or an irregular geometric shape, etc. Its specific shape is not limited here, as long as it can maintain effective contact with the corresponding elastic member 11 and achieve a controllable squeezing effect during the displacement of the second shell 2.

[0055] When a first force is applied to the second housing 2, the support member 21 compresses the elastic member 11; when at least part of the first force is removed from the second housing 2, the elastic member 11 pushes the support member 21 away from the first housing 1, and the second housing 2 moves away from the first housing 1.

[0056] Specifically, the elastic element 11 includes an elastic arm 111, which extends outward from the surface of the first housing 1 and at least partially extends beyond the surface of the first housing 1. When the support member 21 applies pressure to the elastic element 11, because the elastic element 11 extends beyond the surface of the first housing 1, the additional extension allows the elastic element 11 to have a larger elastic deformation space, thereby generating a larger elastic deformation. According to the principle of elastic potential energy, the greater the elastic deformation amplitude, the stronger the accumulated elastic potential energy. After the force on the second housing 2 is removed, the strong elastic potential energy can more effectively restore the second housing 2 to its original position, thereby effectively avoiding the situation where the second housing 2 cannot be completely reset due to insufficient elastic potential energy. This ensures that the electronic device can always accurately return to the initial state after user operation, guaranteeing the stability and reliability of the device's operation response and improving the user experience.

[0057] More specifically, the elastic element 11 also includes a connecting arm 112, which connects the elastic arm 111 and the surface of the first housing 1. The connecting arm 112 strengthens the connection between the elastic arm 111 and the first housing 1, making the elastic element 11 more firmly integrated with the first housing 1. During long-term bearing of the pressure from the support member 21 and repeated elastic deformation, the elastic arm 111 is less likely to detach from the first housing 1, ensuring the stability and reliability of the electronic device structure. Furthermore, the connecting arm 112 can reasonably distribute the stress borne by the elastic arm 111 during deformation, avoiding local stress concentration and helping to maintain the elastic deformation capacity of the elastic arm 111, extending the service life of the elastic element 11. In addition, the connecting arm 112 also facilitates the installation and manufacturing of the elastic element 11. During production, the elastic element 11 can be more easily fixed to the first housing 1 through the connecting arm 112, optimizing the production process and improving production efficiency.

[0058] More specifically, the shape and number of the elastic arm 111 and the connecting arm 112 can be selectively set according to actual needs. In this embodiment, the two ends of the elastic arm 111 are connected to the surface of the first housing 1 through the corresponding connecting arms 112.

[0059] Furthermore, the first housing 1 is provided with a receiving portion 16. When the support member 21 compresses the elastic member 11, the receiving portion 16 at least partially accommodates the elastic member 11. When the support member 21 compresses the elastic member 11, the receiving portion 16 can accommodate the bending deformation portion of the elastic member 11, avoiding interference and collision between the elastic member 11 and surrounding electronic components or housing structure, ensuring the free deformation capability of the elastic member 11 under large compression, and allowing it to fully accumulate the elastic potential energy required for reset.

[0060] In this embodiment, four elastic elements 11 are provided, and the four elastic elements 11 are arranged in a ring-shaped configuration along the circumference of the first housing 1. In other embodiments, the number and position of the elastic elements 11 can be adapted to actual needs, which will not be elaborated here.

[0061] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electronic device, characterized in that, include: The first housing (1) is provided with an elastic element (11); The second housing (2) is provided with a support member (21); the first housing (1) and the second housing (2) are floatingly fastened together, and the elastic member (11) is arranged opposite to the support member (21); When a first force is applied to the second housing (2), the second housing (2) moves toward the first housing (1), and the support member (21) compresses the elastic member (11); when at least part of the first force is removed from the second housing (2), the elastic member (11) pushes the support member (21) away from the first housing (1), and the second housing (2) moves away from the first housing (1).

2. The electronic device according to claim 1, characterized in that, The second housing (2) is provided with a receiving cavity (22), the support member (21) is disposed on the surface of the receiving cavity (22), and the first housing (1) is at least partially disposed in the receiving cavity (22).

3. The electronic device according to claim 2, characterized in that, The first housing (1) is provided with a protruding edge (12) that extends toward the accommodating cavity (22).

4. The electronic device according to claim 3, characterized in that, The surface of the receiving cavity (22) is provided with a locking block (23), and the surface of the protruding edge (12) is provided with a locking groove (13). The locking block (23) is engaged with the locking groove (13).

5. The electronic device according to claim 4, characterized in that, The surface of the card block (23) forms a guide surface (231).

6. The electronic device according to claim 2, characterized in that, The first housing (1) is provided with a groove (14) extending toward the cavity (22), and the surface of the cavity (22) is provided with a limiting ring (25) extending toward the first housing (1). When the first housing (1) and the second housing (2) move relative to each other, the limiting ring (25) at least partially abuts against the groove (14).

7. The electronic device according to claim 2, characterized in that, The surface of the accommodating cavity (22) is provided with a positioning post (24) extending toward the first housing (1), and the first housing (1) is provided with a positioning hole (15). When the first housing (1) and the second housing (2) move relative to each other, the positioning post (24) is at least partially inserted into the positioning hole (15).

8. The electronic device according to claim 1, characterized in that, The elastic element (11) includes an elastic arm (111) that extends outward from the surface of the first housing (1) and at least partially extends beyond the surface of the first housing (1).

9. The electronic device according to claim 8, characterized in that, The elastic element (11) further includes a connecting arm (112) that connects the elastic arm (111) and the surface of the first housing (1).

10. The electronic device according to claim 1, characterized in that, The first housing (1) is provided with a receiving portion (16), which at least partially accommodates the elastic member (11) when the support member (21) compresses the elastic member (11).