Connector
By adopting the design of riveted connecting movable and connecting sections in the connector, the problems of low and dangerous assembly efficiency of existing connectors are solved, and higher assembly efficiency and reliability are achieved, and the service life of the connector is extended through the cushioning force of flexible conductors.
Patent Information
- Application Number
- CN202420282684.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-06
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-02-06
AI Technical Summary
Existing connectors are inefficient and dangerous during assembly, mainly because the two sections of the conductive core are connected by welding, resulting in complex assembly and error-prone.
A connector is designed, wherein both the male end connection part and the female end connection part include a body and a movable section, the movable section is arranged in the channel, and is connected to the first and second connecting sections by riveting, improving the connection reliability and assembly efficiency.
By riveting the connecting section, the assembly difficulty is reduced and the assembly efficiency and reliability of the connector are improved. At the same time, since the movable section is a flexible conductor, it can buffer external forces and extend the service life of the connector.
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Figure CN222673367U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of connectors, and in particular to a connector. Background Art
[0002] Connectors are widely used in electronic devices to achieve electrical connections between electronic devices. In order to achieve the purpose of quick disassembly and assembly, connectors generally include a male connector and a female connector, which are used in pairs. For example, in a photovoltaic system, the power of the photovoltaic cell needs to be transmitted to the inverter. The male connector can be installed at the photovoltaic cell end, and the female connector can be installed at the inverter end. After the male connector and the female connector are connected, the electrical connection between the photovoltaic cell and the inverter can be achieved.
[0003] The conductive core inside the existing connector includes at least two sections, and the two sections of the conductive core are generally connected by welding, so there are problems such as low assembly efficiency and dangerous assembly process. Utility Model Content
[0004] The present application provides a connector for solving the problems of low connector assembly efficiency and dangerous assembly process.
[0005] A connector provided in an embodiment of the present application includes: a male end connection part and a female end connection part, wherein the male end connection part and the female end connection part both include: a body and a movable section, wherein the body has a channel, wherein the movable section is arranged in the channel, and wherein the movable section is used for welding to a circuit board; the male end connection part also includes a first connection section, wherein the first connection section is riveted to the movable section of the male end connection part, and the female end connection part also includes a second connection section, wherein the second connection section is riveted to the movable section of the female end connection part, and the first connection section can be plugged into the second connection section.
[0006] In a possible design, one of the movable section and the first connecting section is provided with a rivet rod, and the other is provided with a first rivet groove, and the first rivet groove and the rivet rod are interference fit; and / or, one of the movable section and the second connecting section is provided with a rivet rod, and the other is provided with a second rivet groove, and the second rivet groove and the rivet rod are interference fit.
[0007] In a possible design, at least a portion of the movable segment is a flexible conductor, and the flexible conductor is used to buffer the force between two ends of the movable segment.
[0008] In a possible design, the flexible conductor is a braided wire, a twisted wire or a copper foil.
[0009] In a possible design, along the extension direction of the movable segment, the maximum retractable length of the flexible conductor is greater than or equal to 3.0 mm.
[0010] In a possible design, the main body includes: a shell and an end cover, one of the shell and the end cover is provided with a first clamping portion, and the other is provided with a first clamping hole, and the first clamping portion can be clamped with the first clamping hole; when the shell and the end cover are clamped, the two can slide relative to each other along the extension direction of the movable section.
[0011] In a possible design, the maximum distance that the housing and the end cover can slide relative to each other is greater than or equal to 2.0 mm.
[0012] In a possible design, the end cover is provided with a through hole connected to the channel, and the movable section can pass through the through hole and be welded to the circuit board; along an extension direction perpendicular to the movable section, the movable section can move in the through hole.
[0013] In a possible design, the maximum distance that the movable segment can move in the through hole is greater than or equal to 0.6 mm.
[0014] In a possible design, the main body further includes a fixing member, the fixing member is sleeved on the outer periphery of the shell, the shell has a shoulder, and a mounting groove for clamping the panel is provided between the fixing member and the shoulder.
[0015] In the present application, for the male end connection part, the first connection section is riveted to the movable section, which reduces the connection difficulty between the first connection section and the movable section, improves the connection reliability between the first connection section and the movable section, and thus improves the assembly efficiency of the male end connection part; similarly, for the female end connection part, the second connection section is riveted to the movable section, which reduces the connection difficulty between the second connection section and the movable section, improves the connection reliability between the second connection section and the movable section, and thus improves the assembly efficiency of the female end connection part. Since the assembly difficulty of both the male end connection part and the female end connection part is reduced, the assembly efficiency of the connector is improved. At the same time, the first connection section and the movable section are electrically connected by riveting, and the second connection section and the movable section are electrically connected by riveting.
[0016] Specifically, the main body has a channel, and the movable section, the first connecting section and the second connecting section are all arranged in the channel. The channel protects the movable section, the first connecting section and the second connecting section, so that the movable section, the first connecting section and the second connecting section are not easily damaged by external impact, thereby extending the service life of the connector. At least part of the movable section is a flexible conductor, which can buffer or weaken the external force through its own deformation, thereby ensuring the connection reliability between the movable section and the circuit board.
[0017] Furthermore, the end cover can slide relative to the shell along the extension direction of the movable section, and the movable section can slide relative to the end cover in the through hole of the end cover along the extension direction perpendicular to the movable section, thereby compensating for the installation error of the electronic device and improving the installation success rate of the connector.
[0018] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of a connector provided in this application in a specific embodiment;
[0020] Figure 2 for Figure 1 A cross-sectional view of
[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the middle male end connection portion;
[0022] Figure 4 for Figure 3 Exploded diagram of
[0023] Figure 5 for Figure 1 A schematic diagram of the structure of the middle female end connection portion;
[0024] Figure 6 for Figure 5 Exploded diagram.
[0025] Reference numerals:
[0026] 1-Ontology;
[0027] 1a-channel;
[0028] 11- housing;
[0029] 111- first clamping portion;
[0030] 112 - shoulder;
[0031] 113- second card connection hole;
[0032] 114- second clamping portion;
[0033] 12-end cover;
[0034] 121-first card connection hole;
[0035] 122- guide protrusion;
[0036] 13-fixing parts;
[0037] 14-first buffer member;
[0038] 15- second buffer member;
[0039] 2-Activity segment;
[0040] 21-Riveting rod;
[0041] 22- Flexible conductor;
[0042] 3- first connecting section;
[0043] 31-first riveting groove;
[0044] 4- second connecting section;
[0045] 41- second riveting groove;
[0046] 5- Circuit board.
[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION
[0048] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0049] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0050] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.
[0051] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0052] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.
[0053] The present application provides a connector, such as Figure 1 and Figure 2 As shown, the connector includes: a male end connection part and a female end connection part, both of which include: a body 1 and a movable section 2, the body 1 has a channel 1a, the movable section 2 is arranged in the channel 1a, and the movable section 2 is used for welding with the circuit board 5; the male end connection part also includes a first connection section 3, the first connection section 3 is riveted to the movable section 2 of the male end connection part, and the female end connection part also includes a second connection section 4, the second connection section 4 is riveted to the movable section 2 of the female end connection part, and the first connection section 3 can be plugged with the second connection section 4.
[0054] The movable section 2 is welded to the circuit board 5 of the electronic device, so that the male connection part or the female connection part can be electrically connected to the electronic device. The male connection part can be connected to the female connection part so that the channels 1a of the bodies 1 of the two are connected. At this time, the first connection section 3 and the second connection section 4 are connected, so that the male connection part and the female connection part are electrically connected, and then the electrical connection between the two electronic devices can be realized through the connector.
[0055] The specific types of electronic devices can be varied. For example, the electronic device can be an inverter, a cabinet, etc. Taking the inverter as an example, the inverter is a converter that converts direct current into constant frequency and constant voltage or frequency and voltage regulated alternating current. The inverter may include functional circuits such as filter circuits, measurement circuits, and inverter circuits, and the above functional circuits can be integrated in the circuit board. When the inverter is used in a photovoltaic system, the circuit board of the inverter can be electrically connected to the photovoltaic cell in the photovoltaic system through a connector, and the direct current in the photovoltaic cell can be processed by the filter circuit, measurement circuit, inverter circuit and other functional circuits integrated on the circuit board to convert the direct current into alternating current, so as to transmit the alternating current to the user end or integrate it into the power grid.
[0056] In this embodiment, if Figure 1 and Figure 2As shown, for the male end connection part, the first connection section 3 is riveted to the movable section 2, which reduces the connection difficulty between the first connection section 3 and the movable section 2, improves the connection reliability between the first connection section 3 and the movable section 2, and thus improves the assembly efficiency of the male end connection part; similarly, for the female end connection part, the second connection section 4 is riveted to the movable section 2, which reduces the connection difficulty between the second connection section 4 and the movable section 2, improves the connection reliability between the second connection section 4 and the movable section 2, and thus improves the assembly efficiency of the female end connection part. Since the assembly difficulty of both the male end connection part and the female end connection part is reduced, the assembly efficiency of the connector is improved. At the same time, the first connection section 3 and the movable section 2 are electrically connected by riveting, and the second connection section 4 and the movable section 2 are electrically connected by riveting.
[0057] Specifically, Figure 2 As shown, the main body 1 has a channel 1a, and the movable section 2, the first connecting section 3 and the second connecting section 4 are all arranged in the channel 1a. The channel 1a protects the movable section 2, the first connecting section 3 and the second connecting section 4, so that the movable section 2, the first connecting section 3 and the second connecting section 4 are not easily damaged by external impact, thereby extending the service life of the connector.
[0058] More specifically, Figure 4 and Figure 6 As shown, one of the movable section 2 and the first connecting section 3 is provided with a rivet rod 21, and the other is provided with a first rivet groove 31, and the first rivet groove 31 and the rivet rod 21 are interference fit; and / or, one of the movable section 2 and the second connecting section 4 is provided with a rivet rod 21, and the other is provided with a second rivet groove 41, and the second rivet groove 41 and the rivet rod 21 are interference fit.
[0059] The interference fit between the first rivet groove 31 and the rivet rod 21 ensures a reliable connection between the movable section 2 and the first connecting section 3 , and the interference fit between the second rivet groove 41 and the rivet rod 21 ensures a reliable connection between the movable section 2 and the second connecting section 4 .
[0060] Further, such as Figure 3 and Figure 4 As shown, the male end connection part has a second snap-fitting hole 113, and the female end connection part has a second snap-fitting part 114. The second snap-fitting hole 113 and the second snap-fitting part 114 can be snap-fitted with each other, thereby realizing a reliable connection between the male end connection part and the female end connection part.
[0061] In a specific embodiment, Figure 4 and Figure 6 As shown, at least a portion of the movable segment 2 is a flexible conductor 22 , and the flexible conductor 22 is used to buffer the force between the two ends of the movable segment 2 .
[0062] In this embodiment, if Figure 4 and Figure 6 As shown, when the male connecting part or the female connecting part is subjected to external force, the flexible conductor 22 can buffer or weaken the force transmitted to the connection between the movable section 2 and the circuit board 5 through its own deformation, thereby ensuring the connection reliability between the movable section 2 and the circuit board 5, and preventing the movable section 2 from detaching from the circuit board 5 or preventing failure caused by fatigue at the connection between the movable section 2 and the circuit board 5.
[0063] In addition, due to the installation errors of electronic devices, and the fixed length and poor extensibility of the connector, it is very easy for the length of the connector to not match the distance between the two electronic devices. The presence of the flexible conductor 22 can also alleviate the problem of the difficulty in installing the connector caused by the installation errors of the electronic devices to a certain extent.
[0064] Specifically, the flexible conductor 22 is a braided wire, a twisted wire or a copper foil. The braided wire, the twisted wire or the copper foil has good extensibility or ductility, and can absorb or weaken the external force through its own deformation. It is understandable that the flexible conductor 22 can also be made of other materials with good extensibility or ductility.
[0065] More specifically, the flexible conductor 22 may be flat, and the movable section 2 may be spindle-shaped as a whole.
[0066] Furthermore, along the extension direction X of the movable section 2, the maximum retractable length of the flexible conductor 22 is greater than or equal to 3.0 mm. For example, the maximum retractable length of the flexible conductor 22 may be 3.0 mm, 3.2 mm, 3.5 mm, 3.8 mm, 4.0 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5.0 mm, etc.
[0067] The maximum retractable length of the flexible conductor 22 along the extension direction X of the active section 2 should not be too small. If the maximum retractable length of the flexible conductor 22 is too small (for example, less than 3.0 mm), the ability of the flexible conductor 22 to absorb or weaken external forces will be poor, and the connector will be prone to failure. Therefore, along the extension direction X of the active section 2, the maximum retractable length of the flexible conductor 22 should be greater than or equal to 3.0 mm.
[0068] In a specific embodiment, Figure 2 and Figure 4 As shown, the main body 1 includes: a shell 11 and an end cover 12, one of the shell 11 and the end cover 12 is provided with a first clamping portion 111, and the other is provided with a first clamping hole 121, and the first clamping portion 111 can be clamped with the first clamping hole 121; when the shell 11 and the end cover 12 are clamped, the two can slide relative to each other along the extension direction X of the movable section 2.
[0069] In this embodiment, if Figure 2 and Figure 4As shown, the housing 11 is provided with a first clamping portion 111, and the end cover 12 is provided with a first clamping hole 121, and the first clamping portion 111 can be clamped with the first clamping hole 121, thereby realizing a reliable connection between the housing 11 and the end cover 12. Since the housing 11 and the end cover 12 are clamped, the two can slide relative to each other along the extension direction X of the active section 2, so that the length of the connector along the extension direction X of the active section 2 can be changed within a certain range, thereby improving the compatibility of the connector with the electronic device, and preventing the problem of the connector being unable to be installed due to the installation error of the electronic device.
[0070] In addition, the first clamping portion 111 may include a plurality of columnar protrusions, which can play a guiding and positioning role when the housing 11 is clamped with the end cover 12. The plurality of columnar protrusions may be symmetrically arranged relative to the axis of the housing 11. Accordingly, the number and position of the first clamping holes 121 are consistent with the number and position of the columnar protrusions.
[0071] Furthermore, the maximum distance that the housing 11 and the end cover 12 can slide relative to each other is greater than or equal to 2.0 mm. For example, the maximum distance may be 2.0 mm, 2.2 mm, 2.5 mm, 2.8 mm, 3.0 mm, 3.2 mm, 3.5 mm, 3.8 mm, 4.0 mm, etc.
[0072] The maximum distance that the housing 11 and the end cover 12 can slide relative to each other should not be too small. If the maximum distance is too small (for example, less than 2.0 mm), it will affect the length variation range of the connector along the extension direction X of the active section 2, reducing the adaptability of the connector. Therefore, the maximum distance that the housing 11 and the end cover 12 can slide relative to each other is greater than or equal to 2.0 mm to effectively compensate for the installation error of the electronic device, improve the adaptability of the connector to the electronic device, and prevent the problem that the connector cannot be installed.
[0073] Furthermore, the housing 11 and the end cover 12 are made of insulating material to prevent the connector from leaking electricity and protect the user.
[0074] Specifically, Figure 4 and Figure 6 As shown, the end cover 12 is provided with a guide protrusion 122 on the side facing away from the shell 11, and the guide protrusion 122 can cooperate with the guide hole on the circuit board 5, so as to guide the connection between the male end connection part or the female end connection part and the circuit board, and improve the installation accuracy of the male end connection part or the female end connection part and the circuit board.
[0075] In a specific embodiment, the end cover 12 is provided with a through hole communicating with the channel 1a, and the movable section 2 can pass through the through hole and be welded to the circuit board 5; along the extension direction perpendicular to the movable section 2, the movable section 2 can move in the through hole.
[0076] In this embodiment, if Figure 2 As shown, the size of the through hole is slightly larger than the size of the end of the movable section 2, so that the movable section 2 can move in the through hole in a direction perpendicular to its extension direction, thereby preventing the installation error between the male end connection part or the female end connection part and the electronic device from affecting the connection reliability between the movable section 2 and the circuit board 5, so that the connection between the connector and the electronic device can withstand certain vibrations and impacts.
[0077] Furthermore, the maximum distance that the movable section 2 can move in the through hole is greater than or equal to 0.6 mm. For example, the maximum distance can be 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm, etc.
[0078] The maximum distance that the movable section 2 can move in the through hole should not be too small. If the maximum distance is too small (for example, less than 0.6 mm), it cannot effectively compensate for and adapt to the installation error between the male or female connection part and the electronic device, thereby reducing the connection reliability between the movable section 2 and the circuit board 5. Therefore, the maximum distance that the movable section 2 can move in the through hole should be greater than or equal to 0.6 mm.
[0079] In a specific embodiment, Figure 3 to Figure 6 As shown, the body 1 further includes a fixing member 13, which is sleeved on the outer periphery of the shell 11. The shell 11 has a shoulder 112, and a mounting groove for clamping the panel is provided between the fixing member 13 and the shoulder 112.
[0080] In this embodiment, if Figure 3 to Figure 6 As shown, the outer periphery of the housing 11 is provided with a threaded structure, and the fixing member 13 may be a nut adapted to the threaded structure, and the fixing member 13 is threadedly connected to the housing 11. By tightening the fixing member 13, a mounting groove matched with the panel of the electronic device is formed between the end of the fixing member 13 and the shoulder 112, and the mounting groove clamps the panel of the electronic device to achieve fixing of the connector on the electronic device.
[0081] Specifically, in order to facilitate the installation of the fixing member 13 on the housing 11, the operator can tighten the fixing member 13 through the tooling. A groove or a protrusion can be provided on the outer circumference of the fixing member 13, and the tooling has a corresponding protrusion or groove. The protrusion or groove on the tooling cooperates with the groove or protrusion on the fixing member 13, and the fixing member 13 can be rotated by rotating the tooling.
[0082] More specifically, in order to improve the relative stability between the tooling and the fixing member 13, there may be multiple grooves or protrusions provided on the fixing member 13, and the multiple grooves or protrusions may be evenly distributed relative to the axis of the fixing member 13. Correspondingly, there are also multiple protrusions or grooves provided on the tooling, and the multiple protrusions or grooves are also evenly distributed.
[0083] Further, such as Figure 4 and Figure 6 As shown, the male end connection part further includes a first buffer 14, and the female end connection part further includes a second buffer 15. The first buffer 14 is located between the fixing part 13 and the shoulder 112 of the male end connection part, and the second buffer 15 is located between the fixing part 13 and the shoulder 112 of the female end connection part, so as to reduce the abnormal sound generated by the collision between the two when the connector vibrates relative to the electronic device, and prevent dust and other impurities from entering the electronic device or the connector from the connection between the connector and the electronic device. The first buffer 14 and the second buffer 15 can be made of silicone or rubber.
[0084] In summary, the present application provides a connector, which includes: a male end connection part and a female end connection part, the male end connection part has a movable section 2 and a first connection section 3, the movable section 2 and the first connection section 3 are riveted, and have the advantages of easy processing and high connection reliability. The female end connection part has a movable section 2 and a second connection section 4, the movable section 2 and the second connection section 4 are riveted, and have the advantages of easy processing and high connection reliability. The first connection section 3 and the second connection section 4 are plugged in, so that the male end connection part and the female end connection part are electrically connected, thereby realizing the electrical connection between the two electronic devices connected to the male end connection part and the female end connection part.
[0085] At least part of the movable section 2 is a flexible conductor 22 . The flexible conductor 22 can buffer or weaken the external force through its own deformation, thereby ensuring the connection reliability between the movable section 2 and the circuit board 5 .
[0086] Furthermore, the end cover 12 can slide relative to the housing 11 along the extension direction X of the movable section 2, and the movable section 2 can slide relative to the end cover 12 in the through hole of the end cover 12 along the extension direction X perpendicular to the movable section 2, thereby compensating for the installation error of the electronic device and improving the installation success rate of the connector. The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A connector, characterized in that: The connector comprises: a male end connection part and a female end connection part, the male end connection part and the female end connection part both comprising: a body (1) and a movable section (2), the body (1) having a channel (1a), the movable section (2) being arranged in the channel (1a), and the movable section (2) being used for welding with a circuit board (5); The male end connection part further comprises a first connection section (3), the first connection section (3) being riveted to the movable section (2) of the male end connection part, and the female end connection part further comprises a second connection section (4), the second connection section (4) being riveted to the movable section (2) of the female end connection part, and the first connection section (3) can be plugged into the second connection section (4).
2. The connector according to claim 1, characterized in that: One of the movable section (2) and the first connecting section (3) is provided with a rivet rod (21), and the other is provided with a first rivet groove (31), and the first rivet groove (31) and the rivet rod (21) are interference-fitted; And / or, one of the movable section (2) and the second connecting section (4) is provided with a rivet rod (21), and the other is provided with a second rivet groove (41), and the second rivet groove (41) and the rivet rod (21) are interference fit.
3. The connector according to claim 1, characterized in that: At least a portion of the movable segment (2) is a flexible conductor (22), and the flexible conductor (22) is used to buffer the force between the two ends of the movable segment (2).
4. The connector according to claim 3, characterized in that: The flexible conductor (22) is a braided wire or a twisted wire.
5. The connector according to claim 3, characterized in that: Along the extension direction (X) of the movable section (2), the maximum retractable length of the flexible conductor (22) is greater than or equal to 3.0 mm.
6. The connector according to claim 1, characterized in that: The body (1) comprises: a shell (11) and an end cover (12); one of the shell (11) and the end cover (12) is provided with a first clamping portion (111), and the other is provided with a first clamping hole (121); the first clamping portion (111) can be clamped with the first clamping hole (121); When the housing (11) and the end cover (12) are snap-fitted, the two can slide relative to each other along the extension direction (X) of the movable section (2).
7. The connector according to claim 6, characterized in that: The maximum distance that the housing (11) and the end cover (12) can slide relative to each other is greater than or equal to 2.0 mm.
8. The connector according to claim 6, characterized in that: The end cover (12) is provided with a through hole communicating with the channel (1a), and the movable section (2) can pass through the through hole and be welded to the circuit board (5); Along an extension direction perpendicular to the movable section (2), the movable section (2) is capable of moving within the through hole.
9. The connector according to claim 8, characterized in that: The maximum distance that the movable section (2) can move in the through hole is greater than or equal to 0.6 mm.
10. The connector according to any one of claims 6 to 9, characterized in that: The main body (1) further comprises a fixing member (13), wherein the fixing member (13) is sleeved on the outer periphery of the shell (11), the shell (11) has a shoulder (112), and a mounting groove for clamping a panel is provided between the fixing member (13) and the shoulder (112).