Grounding spring and terminal

Abstract

The present application provides a grounding spring clip and terminal. The grounding spring clip includes a fixed portion and an elastic arm, the fixed portion has an electrical connection portion and a through structure that penetrates itself in the thickness direction, the electrical connection portion is used to electrically connect to the circuit board, the through structure is used for fasteners to pass through, the first end of the elastic arm is connected to the fixed portion, the second end of the elastic arm is provided with a first convex portion, the first convex portion is used to contact with the frame; the first convex portion has at least one contact structure, the contact structure is a structure in the first convex portion that contacts with the frame, and the contact structure is a line structure or a point structure. The grounding spring clip and terminal provided in the present application can reduce the occupation of the circuit board layout area by the grounding spring clip.

Description

Technical Field

[0001] The present application relates to the field of terminals, and in particular to a grounding spring and a terminal. Background Art

[0002] The circuit board is an important component of the terminal. It provides circuit connection and power distribution functions, so that the various electronic components in the terminal can work together. In order to ensure that the circuit board works well in the terminal application, the circuit board often needs to be electrically connected to the frame (usually a metal frame) in the terminal to achieve grounding, thereby playing a role in anti-static, anti-interference, and improving stability. However, the grounding spring used for circuit board grounding currently has at least the following problems: the welding area of ​​the grounding spring will occupy the layout area of ​​the circuit board. Utility Model Content

[0003] The present application provides a grounding spring and a terminal, which improves the problem that the welding area of ​​the existing grounding spring occupies the layout area of ​​the circuit board.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] In the first aspect, a grounding spring is provided, the grounding spring comprises a fixing part and an elastic arm, the fixing part has an electrical connection part and a through structure penetrating the fixing part in the thickness direction, the electrical connection part is used to be electrically connected to the circuit board, the through structure is used to allow a fastener to pass through, the first end of the elastic arm is connected to the fixing part, the second end of the elastic arm is provided with a first convex part, the first convex part is used to contact the frame. In this way, the grounding spring does not need to be connected to the circuit board by welding, but can be fixed relative to the circuit board by means of the fastener originally used to lock the circuit board and the frame. The above method is adopted to move the installation position of the grounding spring to the position of the circuit board originally used to install the fastener, that is, the original welding area of ​​the grounding spring and the screw locking area of ​​the circuit board are placed in the same area, which reduces the occupation of the grounding spring on the circuit board layout area, and facilitates the miniaturization design of the circuit board and the terminal. It can be understood that the above-mentioned same area refers to an area in which adjacent or partially overlapping welding areas and screw locking areas can be covered.

[0006] In some embodiments, the first convex portion has at least one contact structure, and the contact structure is a structure corresponding to the portion of the first convex portion that contacts the frame, and the contact structure is a line structure or a point structure. Compared with the surface contact between the first convex portion and the frame, the line contact or point contact between the first convex portion and the frame can make the contact area between the first convex portion and the frame smaller, making the frame less prone to wear, so that there is no need to set an additional copper sheet on the frame for contacting the first convex portion, which can reduce the number of components in the terminal and reduce the manufacturing cost of the terminal to a certain extent.

[0007] In some embodiments, the outer contour of the cross section of the first convex portion is a curve, so that the first convex portion can achieve point contact or line contact with the frame, and the surface of the first convex portion is smooth and the friction with the frame is small, so that the frame is not easily worn.

[0008] In some embodiments, the electrical connection part is a sheet body for contacting with the circuit board surface, so that the contact area between the electrical connection part and the circuit board can be large, and the connection between the grounding spring sheet and the circuit board can be stable.

[0009] In some embodiments, the fixing portion is a sheet-shaped structure; and / or the elastic arm is a sheet-shaped structure. With this structure, the grounding elastic sheet has a simple structure and is easy to process.

[0010] In some embodiments, the fixing portion and the elastic arm are both sheet-shaped structures, and the two are arranged at an angle. With this structure, the grounding elastic sheet has a simple structure and is easy to process.

[0011] In some embodiments, the elastic arm includes a first arm body and a second arm body, the first arm body is connected to the fixing portion, the second arm body is connected to the first arm body, and the two are arranged at an angle, and the first convex portion is arranged on the second arm body. This solution can be applied to the case where the contact portion between the frame and the first convex portion is an inclined surface.

[0012] In some embodiments, the fixing part further includes a main body, the main body is used to overlap with the protrusion of the fixing fastener on the frame, the electrical connection part is a pin, which is located on the side of the main body facing the circuit board and connected to the main body, and the through structure is formed on the main body. The structure provided by this embodiment can make the grounding spring sheet suitable for the case where the protrusion is provided on the frame, and make the electrical connection structure between the grounding spring sheet and the circuit board stable. The electrical connection part is a pin, which can save space and make the grounding spring sheet occupy a smaller layout area.

[0013] In some embodiments, one side of the main body has an opening, and the opening is connected to the through structure. Compared with the main body adopting an annular structure, the scheme provided by this embodiment can make the main body require less material when manufacturing, thereby reducing the manufacturing cost to a certain extent.

[0014] In some embodiments, a limiting structure is provided on the main body, and the limiting structure is used to limit the relative position between the main body and the protrusion. The setting of the limiting structure can realize the limitation of the relative position between the main body and the protrusion, so as to facilitate the welding of the electrical connection part and the circuit board and the installation of the fastener, which can improve the assembly efficiency of the terminal to a certain extent and shorten the production cycle of the terminal.

[0015] In some embodiments, the main body includes a first part and a second part, the first part is used to be placed on the top surface of the boss, the second part is located on a side of the first part close to the circuit board and connected to the first part, the second part is arranged to semi-surround the boss, and the second part faces the boss to form a receiving groove for receiving at least part of the boss, the receiving groove is a limiting structure, and the elastic arm is connected to the second part. The main body adopts the solution provided by this embodiment, which can make the main body structure simple and easy to process.

[0016] In some embodiments, the main body also includes an extension portion connected to the second portion, the extension portion is located on a side of the second portion away from the receiving groove, and the electrical connection portion is connected to the second portion through the extension portion. The solution provided by this embodiment can be used to space the electrical connection portion and the boss, so that a certain distance can be left between the grounding point on the circuit board and the side wall of the mounting hole on the circuit board, which can reduce the risk of wear of the grounding point to a certain extent and ensure the stability of the circuit board function to a certain extent.

[0017] In some embodiments, the first part is provided with a second protrusion for electrically connecting to the protrusion. This can, on the one hand, reduce the contact area between the main body and the protrusion, which can reduce the risk of wear between the first part and the protrusion to a certain extent and improve the stability of the frame structure; on the other hand, it can increase the number of contact areas between the grounding spring and the frame, and improve the connection stability between the two.

[0018] In some embodiments, there are multiple second protrusions, and the multiple second protrusions are arranged at intervals. This allows multiple contact areas between the first part and the frame, further increasing the number of contact areas between the grounding spring and the frame, and improving the connection stability between the two.

[0019] In some embodiments, there are multiple pins, and the multiple pins are arranged at intervals, so that the grounding spring and the circuit board can be connected stably.

[0020] In some embodiments, the elastic arm is a stamping part. With this structure, the elastic arm has a simple structure, and the preparation method of the first convex part is simple and easy to operate.

[0021] In some embodiments, the fixing portion is integrally formed, which can make the fixing portion structure stable and easy to prepare.

[0022] In some embodiments, the fixing portion and the elastic arm are integrally formed. With this structure, the connection structure between the parts of the grounding elastic sheet can be stable and easy to manufacture.

[0023] In a second aspect, a terminal is provided, comprising a frame, a circuit board, and a grounding spring provided by any of the above embodiments, wherein the circuit board is arranged on the frame, the fixing portion is arranged on a side of the circuit board away from the frame, the fixing portion is connected to the frame or the circuit board through a fastener, and the first protrusion is in electrical contact with the frame. The terminal can reduce the occupation of the circuit board layout area by the grounding spring, making the terminal structure compact and facilitating the miniaturization design of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the use status of the grounding spring in the related art;

[0025] Figure 2 A schematic diagram of a main view of a terminal provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present application after removing a screen component;

[0027] Figure 4 for Figure 3 Schematic diagram of the local structure at A in the middle;

[0028] Figure 5 for Figure 4 A schematic diagram of the main structure of the middle grounding spring;

[0029] Figure 6 for Figure 4 A schematic diagram of the side structure of the grounding spring;

[0030] Figure 7 A schematic diagram of a partial structure of a terminal provided in another embodiment of the present application;

[0031] Figure 8 for Figure 7 A schematic diagram of the structure of the grounding spring;

[0032] Fig. 9 for Figure 7 A schematic diagram of the side structure of the grounding spring;

[0033] Fig.10 A schematic diagram of a partial structure of a terminal provided in another embodiment of the present application;

[0034] Fig.11 for Fig.10 A schematic diagram of a partial cross-sectional structure of the terminal shown;

[0035] Fig.12 for Fig.10 Schematic diagram of the structure of the grounding spring.

[0036] Description of reference numerals:

[0037] 10', frame; 20', circuit board; 30', grounding spring 50; 40', copper sheet;

[0038] 10. frame; 11. boss; 12. inclined plane; 20. battery; 30. circuit board; 40. screen assembly; 50. grounding spring; 51. fixing part; 52. spring arm; 60. fastener;

[0039] 511, electrical connection part; 512, through structure; 514, main body; 515, limit structure; 521, first end of elastic arm; 522, second end of elastic arm; 523, first convex part; 524, contact structure; 525, first arm body; 526, second arm body;

[0040] 5141. First part; 5142. Second part; 5143. Extension part; 5144. Second convex part. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0042] In the description of the present application, it should be understood that the terms "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. For example, the first limiting portion and the second limiting portion are only used to distinguish different limiting portions, and do not limit their order. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit them to be different.

[0044] It should be noted that, in this application, the words "in one embodiment" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described in this application as "in one embodiment" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the words "in one embodiment" or "for example" is intended to present the relevant concepts in a specific way.

[0045] In this application, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0047] With the development of society, smart watches, mobile phones, laptops and other terminals are increasingly used in various aspects of modern life, work communication, etc., and are gradually becoming one of the necessities of modern people's lives.

[0048] The circuit board is an important part of the terminal. It provides circuit connection and power distribution functions, so that the various electronic components in the terminal can work together. In order to ensure that the circuit board works well in the terminal application, the circuit board often needs to be electrically connected to the frame (usually a metal frame) in the terminal to achieve grounding, thereby playing a role in anti-static, anti-interference, and improving stability.

[0049] Currently, if Figure 1 As shown, the grounding scheme of the circuit board 20' and the frame 10' in the terminal is usually achieved by welding at least one grounding spring 30' on the circuit board 20', welding a copper sheet 40' on the frame 10', and elastically contacting the grounding spring 30' with the copper sheet 40' to achieve electrical connection between the circuit board 20' and the frame 10', thereby achieving the grounding function. Among them, the copper sheet 40' is usually connected to the frame 10' by spot welding. However, the above-mentioned grounding scheme has at least the following problems: 1. The welding area of ​​the grounding spring 30' will occupy the layout area of ​​the circuit board 20' separately; 2. The structure of the grounding spring 30' is complex, and the single-body production cost is high; 3. It is necessary to add a copper sheet 40' to the frame 10', resulting in increased costs; 4. This contact spring 30' can only be in plane contact.

[0050] In order to improve or at least partially improve the above-mentioned problem, an embodiment of the present application provides a grounding spring, which includes a fixing portion and an elastic arm, and the fixing portion has a through structure that penetrates itself in the thickness direction, so that the grounding spring does not need to be connected to the circuit board by welding, but can be fixed relative to the circuit board by means of the fasteners originally used to lock the circuit board and the frame. The above-mentioned method allows the installation position of the grounding spring to be moved to the position of the circuit board originally used to install the fastener, that is, the original welding area of ​​the grounding spring and the screw locking area of ​​the circuit board are placed in the same area, reducing the occupation of the grounding spring on the circuit board layout area, and facilitating the miniaturization design of the circuit board and the terminal.

[0051] The grounding spring sheet disclosed in the embodiment of the present application can be used in a terminal and a product that needs to use the grounding spring sheet. The terminal can be, but is not limited to, a mobile phone, a tablet, a laptop computer, a wearable device, and the like.

[0052] For ease of explanation and understanding, the following description takes a mobile phone as an example of an electronic device.

[0053] like Figure 2 and Figure 3 As shown, a mobile phone generally includes a frame 10, and a battery 20, a circuit board 30, a screen assembly 40, etc., which are arranged on the frame 10. Among them, the frame 10 is generally a metal frame, and one or more frames can be provided. When there are multiple frames 10, the above-mentioned battery 20, circuit board 30, screen assembly 40, etc. can be arranged on one frame 10, and can also be arranged on different frames 10. When there are multiple frames 10, two adjacent frames 10 can be rotatably connected to the same shaft cover through a rotating shaft structure. The ends of two adjacent frames 10 close to the rotating shaft structure can rotate around the rotating shaft structure, so that the ends of the two frames 10 away from the rotating shaft structure can be relatively close to or relatively away from each other, so that the mobile phone can present different states such as folding or unfolding accordingly.

[0054] The screen assembly 40 generally covers one side of the frame 10, and can be a flexible screen or a hard screen, depending on the use requirements. For example, when the mobile phone includes multiple frames 10, which can be in different states such as folded or unfolded, the screen assembly 40 can be a flexible screen, so that when the state of the support device composed of multiple frames 10 changes, the shape of the screen assembly 40 can also be folded or unfolded accordingly as the position between adjacent frames 10 changes; when the mobile phone includes only one frame 10, the screen assembly 40 can be a hard screen.

[0055] The number of batteries 20 can be determined according to the use requirements, such as setting one or more batteries 20 on each frame 10, or setting batteries 20 on only part of the frame 10, and not setting batteries on other parts of the frame 10. The battery 20 and the screen assembly 40 are generally electrically connected to the circuit board 30 to ensure the normal operation of the electronic device.

[0056] One or more circuit boards 30 may be provided. Generally, the circuit boards 30 are fixed to the frame 10 by fasteners 60, and electronic components and grounding springs 50 may be provided on each circuit board 30, and the type and quantity of the electronic components may be determined according to the use requirements of the electronic equipment. One or more grounding springs 50 may be provided on each circuit board 30. Some circuit boards 30 may not be provided with grounding springs 50, which may be determined according to design requirements. For example, some circuit boards 30 may be provided with multiple loops, and the multiple loops may be grounded respectively through multiple grounding springs 50; some loops may be grounded through grounding springs 50, and some loops may not be grounded; or multiple loops may not be grounded. It may be determined according to design requirements and use requirements.

[0057] Please refer to Figure 4 As shown, the embodiment of the present application provides a grounding spring 50. The grounding spring 50 is used to electrically connect the circuit board 30 and the frame 10. Figure 5 and Figure 6 As shown, the grounding spring 50 includes a fixing portion 51 and an elastic arm 52. The fixing portion 51 has an electrical connection portion 511 and a through structure 512 that penetrates the fixing portion 51 along the thickness direction. The electrical connection portion 511 is a portion of the fixing portion 51 that is used to electrically connect to the circuit board 30. It can be a plate-shaped structure, a sheet body, etc. that contacts the surface of the circuit board 30, or a pin (also called a pin foot) that is welded to the circuit board 30. The specific structure can be determined according to the use requirements. The through structure 512 is a structure in the fixing portion 51 for fasteners 60 such as bolts and screws to pass through. It can be a through hole with a side wall that forms a closed pattern, or a hole or notch with a side wall that does not form a closed pattern (i.e., has an open structure). The through hole with a side wall that forms a closed pattern can be made in the middle or other non-edge areas of the fixing portion 51 by stamping, cutting, etc. after the fixing portion 51 is formed, or it can be made directly when preparing the fixing portion 51 by an integrated molding process. One side of the hole or notch structure that is not enclosed in a closed shape on the side wall is open and communicated with the external space. This structure can also be made on the fixing part 51 by stamping, cutting and other processes after the fixing part 51 is formed, or it can be made directly when preparing the fixing part 51 by an integrated molding process. It can also be made into a long strip structure first, and then the fixing part 51 with the above structure is made by bending and other processes. It can be understood that the structure and size of the through structure 512 can be designed and adjusted according to the model and size of the fastener 60.

[0058] The first end 521 of the elastic arm 52 is connected to the fixing portion 51, and the second end 522 of the elastic arm 52 is used to elastically contact the frame 10. The second end 522 of the elastic arm 52 is provided with a first convex portion 523, and the elastic arm 52 contacts the frame 10 through the first convex portion 523. The first convex portion 523 can contact the frame 10 in a surface, point or line manner, which can be determined according to the use requirements.

[0059] The elastic arm 52 is generally a long strip, but can also be a strip column, or other shapes. The size, shape, structure, etc. of the elastic arm 52 can be designed and adjusted according to the actual elastic force requirements. The above-mentioned size includes the length, width, thickness, etc. of the elastic arm 52.

[0060] For ease of understanding, Figure 4 The embodiment shown here illustrates the installation principle of the grounding spring 50 provided in the embodiment of the present application installed on the mobile phone:

[0061] The circuit board 30 is generally connected to the frame 10 through a fastener 60, so the circuit board 30 is generally provided with a mounting hole for the fastener 60 to pass through. When designing the circuit board 30, the ground connection point on the circuit board 30 can be arranged around the above-mentioned mounting hole. The above-mentioned ground connection point refers to the electrical connection point where the circuit board 30 contacts the electrical connection portion 511 on the grounding spring 50.

[0062] When assembling a mobile phone, the circuit board 30 can be placed on the frame 10 first, and then the fixing part 51 of the grounding spring sheet 50 can be placed on the circuit board 30, so that the through structure 512 on the fixing part 51 is aligned with the mounting hole on the circuit board 30 and connected to form a combination hole, and then the fastener 60 (such as a screw) is installed into the combination hole and tightened to achieve the locking of the grounding spring sheet 50, the circuit board 30 and the frame 10, and the first protrusion 523 on the elastic arm 52 is over-pressurized with the frame 10 to achieve a stable electrical connection.

[0063] It should be noted that during the above operation, if the frame 10 is connected to the shell of the mobile phone, if a paint layer is also formed on the frame 10 when the shell is painted, and the contact portion between the elastic arm 52 and the frame 10 is located on the paint layer, before installing the grounding spring piece 50, the paint layer there should be removed by laser engraving or other processes, so that after the grounding spring piece 50 is installed, the first protrusion 523 on the elastic arm 52 can directly contact the metal part of the frame 10 to ensure the grounding effect.

[0064] The grounding spring 50 provided in the embodiment of the present application includes a fixing portion 51 and an elastic arm 52. The fixing portion 51 has a through structure 512 that penetrates the fixing portion 51 along the thickness direction, so that the grounding spring 50 does not need to be connected to the circuit board 30 by welding, but can be fixed relative to the circuit board 30 by means of the fastener 60 originally used to lock the circuit board 30 and the frame 10. The above method allows the installation position of the grounding spring 50 to be moved to the position of the circuit board 30 originally used to install the fastener 60, that is, the original welding area of ​​the grounding spring 50 and the screw locking area of ​​the circuit board 30 are placed in the same area, reducing the occupation of the layout area of ​​the circuit board 30 by the grounding spring 50, and facilitating the miniaturization design of the circuit board 30 and the terminal. It can be understood that the above-mentioned same area refers to an area in which adjacent or partially overlapping welding areas and screw locking areas can be covered.

[0065] It should also be noted that the grounding spring 50 provided in the embodiment of the present application can not only be used in the grounding solution of terminal products, but can also be applied to similar scenarios in various engineering fields, and has more application scenarios.

[0066] In the related art, the first protrusion 523 is generally in surface contact with the frame 10. However, if the first protrusion 523 is in direct contact with the frame 10, the frame 10 is prone to wear and tear during long-term use, which affects its structural stability and service life. Figure 6 As shown, in some embodiments, the first convex portion 523 is in line contact or point contact with the frame 10. Line contact means that the contact area between the first convex portion 523 and the frame 10 is a line or approximately a line. The above-mentioned contact area may have one or more, and when there are multiple contact areas, the multiple contact areas are generally arranged at intervals. The above-mentioned approximately a line means that the contact area between the first convex portion 523 and the frame 10 is long and has a certain width, but the width is much smaller than its length. The above-mentioned width is much smaller than its length means that the above-mentioned width is less than 1 / 3 of the length.

[0067] Point contact means that the first protrusion 523 has at least one contact point with the frame 10. The contact point can be a point or an area smaller than a preset range. The preset range can be determined according to the use requirements. As shown by simulation, when the area of ​​the contact point is greater than 1mm 2 When the first protrusion 523 is in friction contact with the frame 10 for a preset time, the frame 10 will be worn, and the area of ​​the contact point is less than or equal to 1mm 2 When the first protrusion 523 is in friction contact with the frame 10 for a preset time, the frame 10 will not be worn. The area of ​​the contact point can be set to be less than or equal to 1 mm. 2 And any value greater than 0. The above preset time period may be the service life of the mobile phone.

[0068] The solution provided in this embodiment can be understood as that the first convex portion 523 has at least one contact structure 524. The contact structure 524 is a structure corresponding to the portion of the first convex portion 523 that contacts the frame 10. The contact structure 524 is a line structure or a point structure. When the contact structure 524 is a line structure, the first convex portion 523 is in line contact with the frame 10, and when the contact structure 524 is a point structure, the first convex portion 523 is in point contact with the frame 10.

[0069] Compared with the surface contact between the first protrusion 523 and the frame 10, the line contact or point contact between the first protrusion 523 and the frame 10 can make the contact area between the first protrusion 523 and the frame 10 smaller, making the frame 10 less prone to wear, so that there is no need to set an additional copper sheet on the frame 10 for contacting the first protrusion 523, which can reduce the number of components in the terminal and reduce the production cost of the terminal to a certain extent.

[0070] The first convex portion 523 may be in various shapes. In some embodiments, the outer contour of the cross section of the first convex portion 523 is a curve, such as the outer surface of the first convex portion 523 is in the shape of a spherical cap, a hemisphere, a hemi-ellipsoid, a triangular prism, etc. In this way, point contact or line contact between the first convex portion 523 and the frame 10 can be achieved, and the surface of the first convex portion 523 is smooth and the friction between the first convex portion 523 and the frame 10 is small, so that the frame 10 is not easily worn.

[0071] The first protrusion 523 can be a separately provided body, which is installed on the elastic arm 52 by welding, plugging, etc., or formed on the elastic arm 52 by an integrated molding process, which can be determined according to the use requirements. When the first protrusion 523 is formed on the elastic arm 52 by an integrated molding process, the connection structure with the elastic arm 52 is stable and easy to prepare.

[0072] In some embodiments, the elastic arm 52 is a stamping part, and the first protrusion 523 is formed on the elastic arm 52 by stamping. With this structure, the elastic arm 52 has a simple structure, and the preparation method of the first protrusion 523 is simple and easy to operate.

[0073] In some embodiments, the elastic arm 52 is a sheet body, which is easy to prepare and rebound.

[0074] Since the frame 10 has a variety of configurations, the area where the fastener 60 is disposed also has a variety of configurations. Figure 4 and Figure 5As shown, in some embodiments, the area on the frame 10 for installing the fastener 60 is not higher than the contact surface between the circuit board 30 and the grounding spring 50. In this case, the electrical connection part 511 can be a sheet body for surface contact with the circuit board 30. In this way, the contact area between the electrical connection part 511 and the circuit board 30 can be large, so that the connection between the grounding spring 50 and the circuit board 30 is stable. With this solution, the fixing part 51 can be a sheet-shaped structure such as an annular sheet body, a C-shaped sheet body, etc., which can be determined according to the needs of use. When the fixing part 51 is an annular sheet body, the through hole in the middle is the above-mentioned through structure 512, and the part of the fixing part 51 other than the through hole is the electrical connection part 511. With this structure, the structure of the fixing part 51 is simple and easy to process.

[0075] On the basis of the above-mentioned embodiments, in order to make the structure of the grounding spring sheet 50 simple and easy to process, the elastic arm 52 can also adopt a sheet-shaped structure. At the same time, since the frame 10 has a variety of settings, the elastic arm 52 can also have a variety of settings. For example, in some embodiments, the part of the frame 10 that contacts the first protrusion 523 is a plane. In this case, the elastic arm 52 can be a sheet-shaped structure that is tilted and tilted toward the side where the frame 10 is located relative to the fixed portion 51. That is, in this embodiment, the fixed portion 51 and the elastic arm 52 are both sheet-shaped structures, and the two are arranged at an angle. The angle mentioned here is a non-zero angle, and the size of the angle can be determined according to the size and installation conditions of the frame 10, the circuit board 30, and the grounding spring sheet 50, as long as the first protrusion 523 can be stably electrically connected to the frame 10 after installation. With this structure, the grounding spring sheet 50 has a simple structure and is easy to process.

[0076] In other embodiments, Figures 7 to 9 As shown, the portion of the frame 10 that contacts the first protrusion 523 on the elastic arm 52 is the inclined surface 12. In order to meet this use environment, the elastic arm 52 may include a first arm 525 and a second arm 526. The first arm 525 is connected to the fixing portion 51, and the second arm 526 is connected to the first arm 525, and the two are arranged at an angle, and the first protrusion 523 is arranged on the second arm 526. It can be understood that the angle between the second arm 526 and the first arm 525 can be determined according to the inclination angle of the inclined surface 12 on the frame 10 and the contact between the first protrusion 523 and the inclined surface 12. If the inclination angle of the inclined surface 12 is 40°, the inclination direction of the second arm 526 can also be 40°±processing error. However, if the inclination angle of the second arm 526 is 30°, the first protrusion 523 can also be in stable contact with the inclined surface 12, and the inclination angle of the second arm 526 can also be 30°.

[0077] The above are two possible embodiments of the grounding spring 50 when the area on the frame 10 for mounting the fastener 60 is not higher than the contact surface between the circuit board 30 and the grounding spring 50. In other embodiments, the grounding spring 50 may also be arranged in other ways.

[0078] In other embodiments, such as Fig.10 and Fig.11 As shown, the area on the frame 10 for mounting the fastener 60 may also be higher than the contact surface between the circuit board 30 and the grounding spring 50, that is, the area on the frame 10 where the fastener 60 is arranged is provided with a convex column 11 protruding from other areas of the frame 10, and the top surface of the convex column 11 is higher than the contact surface between the circuit board 30 and the grounding spring 50. In this case, Fig.11 and Fig.12 As shown, the fixing portion 51 may include a main body 514, an electrical connection portion 511 and a through structure 512. The main body 514 may be placed on the top surface of the above-mentioned boss 11, and the through structure 512 is formed on the main body 514. The electrical connection portion 511 may be a pin, connected to the side of the main body 514 facing the circuit board 30, and connected to the circuit board 30 by welding. The elastic arm 52 is connected to the main body 514. By adopting the structure provided in this embodiment, the grounding spring 50 can be applied to the case where the boss 11 is provided on the frame 10, and the electrical connection structure between the grounding spring 50 and the circuit board 30 is stable. The electrical connection portion 511 is a pin, which can save space and make the grounding spring 50 occupy a smaller layout area. By adopting the structure provided in this embodiment, the shape, size, etc. of the elastic arm 52 can also be adjusted according to the position of the boss 11 and the position of the grounding point on the circuit board 30 to meet the needs of electrical connection and grounding in different scenarios, so that the grounding method provided by this application has more application scenarios.

[0079] On the basis of the above-mentioned embodiments, in order to reduce the material required for the grounding spring 50, in some embodiments, one side of the main body 514 has an opening, and the opening is connected to the through structure 512, that is, the main body 514 is a semi-enclosed structure with an opening on the side. For example, the main body 514 can be a structure formed by removing 1 / 4 of the ring part, or a C-shaped part, or other structures, as long as it can be placed on the above-mentioned convex column 11 and does not affect the welding of the electrical connection part 511 and the circuit board 30. The solution provided by this embodiment can reduce the material required for the production of the main body 514 compared to the ring structure of the main body 514, thereby reducing the production cost to a certain extent.

[0080] In order to prevent the relative position of the main body 514 to the boss 11 and the circuit board 30 from changing significantly after the main body 514 is placed on the top surface of the boss 11, so as to facilitate the welding of the electrical connection part 511 and the circuit board 30, in some embodiments, a limiting structure 515 is provided on the main body 514, and the relative position of the main body 514 and the boss 11 can be limited by the limiting structure 515. For example, the limiting structure 515 can be a plug-in structure that plugs with the boss 11, or a surrounding structure that surrounds the boss 11, as long as the relative position of the boss 11 and the main body 514 can be limited. The above limitation can be that after the main body 514 is placed on the boss 11, the relative position of the two will not change through the limiting structure 515, or the relative position of the two can change, but the change does not affect the installation of the fastener 60 and the welding of the electrical connection part 511 and the circuit board 30. It can be seen that the setting of the limiting structure 515 can limit the relative position of the main body 514 and the boss 11, so as to facilitate the welding of the electrical connection part 511 and the circuit board 30 and the installation of the fastener 60. This can improve the assembly efficiency of the terminal to a certain extent and shorten the production cycle of the terminal.

[0081] In some embodiments, the main body 514 includes a first part 5141 and a second part 5142. The first part 5141 is used to be placed on the top surface of the boss 11. The second part 5142 is located on the side of the first part 5141 close to the circuit board 30 and is connected to the first part 5141. The second part 5142 is arranged to semi-surround the above-mentioned boss 11. The second part 5142 is surrounded by a receiving groove for accommodating at least part of the boss 11 on one side facing the boss 11, and the receiving groove is the above-mentioned limiting structure 515. The elastic arm 52 is connected to the second part 5142. The main body 514 adopts the solution provided in this embodiment, which can make the main body 514 simple in structure and easy to process.

[0082] In some embodiments, the main body 514 further includes an extension portion 5143 connected to the second portion 5142, the extension portion 5143 is located on the side of the second portion 5142 away from the receiving groove, and the electrical connection portion 511 is connected to the second portion 5142 through the extension portion 5143. The solution provided in this embodiment can be used to space the electrical connection portion 511 and the boss 11, so that a certain distance can be left between the grounding point on the circuit board 30 and the side wall of the mounting hole on the circuit board 30, which can reduce the risk of wear of the grounding point to a certain extent, and ensure the functional stability of the circuit board 30 to a certain extent.

[0083] The extension portion 5143 may be a plate, a column, a sheet, etc. It may extend in a straight line direction perpendicular to the axis of the boss 11 or at other angles, or in a curved line direction, depending on the specific usage requirements.

[0084] On the basis of the above embodiments, in order to ensure a stable connection between the grounding spring 50 and the circuit board 30, in some embodiments, a plurality of pins are provided, and the plurality of pins are arranged at intervals. In this case, a plurality of extension parts 5143 are also provided, and are arranged corresponding to the plurality of pins. The plurality of pins are connected to the main body 514 through the extension parts 5143, respectively.

[0085] Since the above embodiment is applicable to the case where the protrusion 11 protrudes from the circuit board 30, in this case, the above main body 514 can directly contact the protrusion 11, and the protrusion 11 is generally integrally formed on the frame 10 and is also a metal part. In order to stabilize the grounding, a second protrusion 5144 electrically connected to the protrusion 11 can be provided on the main body 514. Specifically, the second protrusion 5144 can be provided on the first part 5141 of the main body 514, so that on the one hand, the contact area between the main body 514 and the protrusion 11 can be smaller, which can reduce the risk of wear between the first part 5141 and the protrusion 11 to a certain extent, and improve the stability of the frame 10 structure; on the other hand, the number of contact areas between the grounding spring 50 and the frame 10 can be increased, and the connection stability between the two can be improved.

[0086] The second protrusion 5144 may be provided with one or more. When multiple second protrusions 5144 are provided, the multiple second protrusions 5144 may be provided at intervals. In this way, multiple contact areas can be provided between the first portion 5141 and the frame 10, further increasing the number of contact areas between the grounding spring 50 and the frame 10, and improving the connection stability between the two.

[0087] In some embodiments, the fixing portion 51 is integrally formed, that is, the fixing portion 51 can be made by an integral forming process such as casting, stamping, etc. With this structure, the fixing portion 51 can be structurally stable and easy to manufacture.

[0088] The elastic arm 52 and the fixing part 51 can be two independently arranged parts, connected by welding, plugging, etc., or can be integrally formed. When the two are integrally formed, the grounding spring sheet 50 can be made by an integral forming process such as casting or stamping. With this structure, the connection structure between the various parts of the grounding spring sheet 50 can be stable and easy to prepare.

[0089] Another embodiment of the present application also provides a terminal, which includes a frame, a circuit board, and a grounding spring provided by any of the above embodiments. The circuit board is arranged on the frame, the fixing portion is arranged on the side of the circuit board away from the frame, the fixing portion is connected to the frame or the circuit board through a fastener, and the first protrusion is in electrical contact with the frame. By using the terminal provided by the embodiment of the present application, the occupation of the circuit board layout area by the grounding spring can be reduced, so that the terminal structure is compact and the miniaturization design of the terminal is convenient.

[0090] Finally, it should be noted that the above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A grounding spring, characterized in that: It includes a fixing part and an elastic arm, the fixing part has an electrical connection part and a through structure penetrating itself along the thickness direction, the electrical connection part is used to be electrically connected to the circuit board, the through structure is used for a fastener to pass through, the first end of the elastic arm is connected to the fixing part, the second end of the elastic arm is provided with a first protrusion, and the first protrusion is used to contact the frame.

2. The grounding spring according to claim 1, characterized in that: The first convex portion has at least one contact structure, and the contact structure is a structure corresponding to a portion of the first convex portion that contacts the frame body, and the contact structure is a line structure or a point structure.

3. The grounding spring according to claim 1 or 2, characterized in that: The outer contour of the cross section of the first convex portion is a curve.

4. The grounding spring according to any one of claims 1 to 3, characterized in that: The electrical connection portion is a sheet body used for contacting the surface of the circuit board.

5. The grounding spring according to any one of claims 1 to 4, characterized in that: The fixing portion is a sheet-shaped structure; And / or, the elastic arm is a sheet-shaped structure.

6. The grounding spring according to any one of claims 1 to 5, characterized in that: The fixing portion and the elastic arm are both sheet-shaped structures, and the two are arranged at an angle.

7. The grounding spring according to any one of claims 1 to 4, characterized in that: The elastic arm includes a first arm body and a second arm body, the first arm body is connected to the fixing portion, the second arm body is connected to the first arm body, and the two are arranged at an angle, and the first protrusion is arranged on the second arm body.

8. The grounding spring according to any one of claims 1 to 3, characterized in that: The fixing part also includes a main body, which is used to overlap with a boss on the frame that fixes the fastener. The electrical connection part is a pin, which is located on the side of the main body facing the circuit board and connected to the main body. The through structure is formed on the main body.

9. The grounding spring according to claim 8, characterized in that: One side of the main body is provided with an opening, and the opening is communicated with the through structure.

10. The grounding spring according to claim 8 or 9, characterized in that: The main body is provided with a limiting structure, and the limiting structure is used to limit the relative position between the main body and the boss.

11. The grounding spring sheet according to claim 10, characterized in that: The main body includes a first part and a second part, the first part is used to be placed on the top surface of the boss, the second part is located on a side of the first part close to the circuit board and is connected to the first part, the second part is arranged to semi-surround the boss, and the second part faces the boss to form a receiving groove for accommodating at least part of the boss, the receiving groove is the limiting structure, and the elastic arm is connected to the second part.

12. The grounding spring according to claim 11, characterized in that: The main body also includes an extension portion connected to the second portion, the extension portion is located on a side of the second portion away from the receiving groove, and the electrical connection portion is connected to the second portion through the extension portion.

13. The grounding spring sheet according to claim 11 or 12, characterized in that: The first portion is provided with a second protrusion for electrically connecting to the protrusion.

14. The grounding spring according to claim 13, characterized in that: There are a plurality of the second protrusions, and the plurality of the second protrusions are arranged at intervals.

15. The grounding spring according to any one of claims 8 to 14, characterized in that: There are a plurality of pins, and the plurality of pins are arranged at intervals.

16. The grounding spring according to any one of claims 1 to 15, characterized in that: The elastic arm is a stamping part.

17. The grounding spring according to any one of claims 1 to 16, characterized in that: The fixing portion is integrally formed.

18. The grounding spring according to any one of claims 1 to 17, characterized in that: The fixing portion and the elastic arm are integrally formed.

19. A terminal, characterized in that: It comprises a frame, a circuit board and the grounding spring sheet according to any one of claims 1 to 18, wherein the circuit board is arranged on the frame, the fixing portion is arranged on a side of the circuit board away from the frame, the fixing portion is connected to the frame or the circuit board through a fastener, and the first protrusion is in electrical contact with the frame.

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