A locking member and a plug connector

Abstract

The embodiment of the present application provides a locking component and a plug connector. The locking component comprises a base plate and a pair of side plates protruding from the base plate; each side plate is provided with a clamping spring, and the clamping spring has a first end that can move relative to the side plate; the clamping spring has a first elastic force that limits the first end to move from the inside of the accommodating space to the direction close to the side plate along the width direction of the base plate; when the locking component is sleeved on the shell along the length direction of the base plate, and the clamping spring provides the first elastic force, the first end abuts against the shell to limit the movement of the shell in the width direction of the base plate. The locking component can avoid the existence of the movable space of the locking component in the width direction of the base plate after being preassembled on the shell through the structural design of the clamping spring, so that the locking component will not be deviated in position when the plug connector is subjected to external force or is in a complex vibration environment, and the connection stability of the plug connector is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a locking component and a plug connector. Background Technology

[0002] Plug connectors have cables for achieving electrical connections and signal transmission, and a stable connection of plug connectors can improve the reliability of the connection between the cable and the socket connector.

[0003] As an important component of plug connectors, locking components play a crucial role in ensuring stable connection of the plug connectors and preventing accidental loosening of the plug connectors.

[0004] However, existing locking components still have some shortcomings in their structural design: after the locking component is pre-installed on the housing of the plug connector, there is room for movement in the X direction. This room for movement may cause the locking component to shift unnecessarily when the plug connector is subjected to external forces or is in a complex vibration environment, thereby affecting the connection stability of the plug connector, increasing the risk of the plug connector coming loose, and thus posing a potential threat to the reliability of the cable in signal transmission and electrical connection. Utility Model Content

[0005] The locking component and plug connector provided by this utility model are intended to solve at least some of the defects of existing locking components.

[0006] In a first aspect, the present invention provides a locking component. The locking component is applied to a plug connector having a housing, and the locking component includes:

[0007] A substrate and a pair of side plates, each of the side plates protruding from the substrate and located on opposite sides of the substrate in its width direction;

[0008] The substrate and the pair of side plates enclose a receiving space, and the housing is detachably installed inside the receiving space;

[0009] Each of the side plates is provided with a clamping spring, and the clamping spring has a first end that is movable relative to the side plate;

[0010] The clamping spring has a first elastic force that restricts the first end from moving along the width direction of the substrate from inside the receiving space toward the side plate;

[0011] When the locking component is sleeved on the housing along the length direction of the substrate, and the clamping spring provides the first elastic force, the first end abuts against the housing to restrict the movement of the housing in the width direction of the substrate.

[0012] In some embodiments, each of the side panels is provided with a piercing structure, and the piercing structure has a protrusion extending from the side panel into the receiving space;

[0013] The puncture structure has a second elastic force that restricts the protrusion from moving along the width direction of the substrate from inside the receiving space toward the side plate;

[0014] When the locking member is fitted onto the housing along the length of the substrate, and the puncturing structure provides the second elastic force, the protrusion abuts against the housing to restrict the movement of the housing in the width and length directions of the substrate.

[0015] In some embodiments, the clamping spring and the piercing structure are arranged along the length direction of the substrate;

[0016] The puncturing structure has a predetermined first distance between itself and the substrate on the side of the substrate that is close to the substrate in the thickness direction.

[0017] In some embodiments, when the locking member is sleeved on the housing along the length of the substrate, and the clamping spring provides the first elastic force and the piercing structure provides the second elastic force, the housing is fixed inside the receiving space.

[0018] In some embodiments, when the housing overcomes the first elastic force and the second elastic force, the housing disengages from the containment space.

[0019] In some embodiments, each of the pair of side plates is formed by bending at least a portion of the substrate and is integral with the substrate.

[0020] In some embodiments, the clamping spring is formed by stamping at least a portion of the side plate and is integral with the side plate.

[0021] In some embodiments, the puncture structure is formed by stamping at least a portion of the side plate and is an integral structure with the side plate.

[0022] Secondly, this utility model provides a plug connector. The plug connector includes:

[0023] Plug body, cable, and housing;

[0024] The plug body is fixedly installed inside the housing, and one end of the cable is connected to the plug body;

[0025] The housing is detachably connected to the aforementioned locking component.

[0026] In some embodiments, the housing includes:

[0027] The base and a pair of side ears, wherein the pair of side ears are formed by bending at least a portion of the base, and the pair of side ears and the base are an integral structure;

[0028] The side ear has a preset first height in the thickness direction of the substrate, and the first height is not greater than the first distance between the piercing structure of the locking member and the substrate on the side of the substrate close to the substrate in the thickness direction of the locking member.

[0029] At least one beneficial effect of the locking component and plug connector provided by this utility model embodiment is: a novel locking component is proposed. By incorporating a clamping spring sheet structure design, when the locking component is sleeved on the housing of the plug connector along the length direction of the substrate, and the clamping spring sheet provides a first elastic force, the first end of the clamping spring sheet can hold the housing, thereby restricting the movement of the housing in the width direction of the substrate. This avoids the locking component having any movement space in the width direction of the substrate after it is pre-installed on the housing, thus ensuring that the locking component will not shift its position when the plug connector is subjected to external force or is in a complex vibration environment, thereby improving the connection stability of the plug connector and reducing the risk of the plug connector becoming loose. Attached Figure Description

[0030] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are designated as the same elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0031] Figure 1 A schematic diagram of the locking component provided in an embodiment of this utility model;

[0032] Figure 2 A cross-sectional schematic diagram of the locking component provided in an embodiment of this utility model;

[0033] Figure 3 A schematic diagram of the structure of the plug connector provided in an embodiment of this utility model;

[0034] Figure 4 A schematic diagram of the structure of the locking component pre-installed on the housing of the plug connector according to an embodiment of the present utility model;

[0035] Figure 5 A cross-sectional view of the locking component pre-installed on the housing of the plug connector according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of a traditional locking component;

[0037] Figure 7 This is a schematic diagram of the structure of a traditional plug connector;

[0038] Figure 8 A schematic diagram of a structure for pre-installing a conventional locking component onto a conventional housing of a conventional plug connector.

[0039] Figure label:

[0040] 100. Locking component; 1001. Accommodating space; 1. Base plate; 2. Side plate; 201. Clamping spring; 202. Puncture structure; 203. Notch; 2011. First end; 2012. Bending portion; 2013. Elastic arm; 2021. Protrusion; 2022. First gap;

[0041] 200. Plug connector; 2001. Housing; 2002. Plug body; 2003. Cable; 2004. Base; 2005. Side ear; 2006. First height; 2007. Second height; 2008. Third height;

[0042] 300. Traditional locking component; 3001. Anti-reverse latch; 3002. Bending structure; 3003. Clamping arm; 3004. Protrusion;

[0043] 400, Conventional plug connector; 4001, Conventional side lug; 4002, Conventional housing; 4003, Locking size; 4004, Height size. Detailed Implementation

[0044] The present invention will now be described in detail with reference to specific embodiments. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0045] It should be noted that, unless otherwise explicitly specified and limited, the terms “X direction”, “Y direction”, “Z direction”, “length direction”, “width direction”, “thickness direction”, “internal”, etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "installation," "fitting," "connection," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection or a detachable 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. "Fixing" can be bolt fixing, snap-fit ​​fixing, or glue fixing. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature. "A plurality" or "several" means two or more. In addition, "and / or" includes any and all combinations of one or more of the related listed items. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] In this embodiment, the specific implementation of the "locking component and plug connector" is not limited. Those skilled in the art can selectively use any suitable implementation method according to actual needs.

[0048] Figure 1 This is a schematic diagram of the locking component provided in an embodiment of the present utility model. Figure 2 This is a cross-sectional schematic diagram of the locking component provided in an embodiment of the present utility model. Figure 3 This is a schematic diagram of the structure of the plug connector provided in an embodiment of the present utility model. Figure 4 A schematic diagram of the structure of the locking component pre-installed on the housing of the plug connector according to an embodiment of the present invention. Figure 5 A cross-sectional view of the locking component pre-installed on the housing of the plug connector according to an embodiment of the present invention. Figure 6 This is a schematic diagram of a traditional locking component. Figure 7 This is a schematic diagram of the structure of a traditional plug connector. Figure 8 A schematic diagram of a structure for pre-installing a conventional locking component onto a conventional housing of a conventional plug connector.

[0049] In the following description, such as Figures 1-8 As shown, the following situation exists: the width direction of the substrate 1 is set as the X direction, the axial direction of the cable 2003 or the length direction of the substrate 1 is set as the Y direction, and the thickness direction of the substrate 1, the thickness direction of the base 2004 or the thickness direction of the conventional housing 4002 is set as the Z direction; wherein, the X direction, the Y direction and the Z direction are orthogonal to each other.

[0050] It should be noted that the plug connector 200 is an electrical connector that electrically connects the signal transmission medium, such as the cable 2003, to the circuitry of the substrate, for example, an RF cable plug (Radio Frequency-Cable Plug). The so-called signal transmission medium refers to the medium used to transmit signals from various electronic devices such as mobile phones, for example, an RF cable.

[0051] It is understood that the plug connector 200 engages with the socket connector (not shown) mounted on the substrate as the target connector, thereby electrically connecting the cable 2003 to the circuit of the substrate.

[0052] In one embodiment, please refer to Figures 1-5 The locking component 100 is applied to the plug connector 200 having a housing 2001.

[0053] Specifically, the aforementioned locking component 100 includes: a base plate 1 and a pair of side plates 2.

[0054] Among them, a pair of side plates 2 protrude from the substrate 1 along the Z direction, and the pair of side plates 2 are respectively located on opposite sides of the substrate 1 in its width direction (or in the X direction).

[0055] In addition, the substrate 1 and a pair of side plates 2 enclose a receiving space 1001, and the housing 2001 is detachably installed inside the receiving space 1001.

[0056] In addition, each side plate 2 is provided with a clamping spring 201, and the clamping spring 201 has a first end 2011 that can move relative to the side plate 2.

[0057] In this embodiment, the clamping spring 201 comprises a first end 2011 (which can also be understood as a contact portion abutting against the housing), a bent portion 2012, and an elastic arm 2013; wherein, each side plate 2 has a notch 203 on the side away from the substrate 1 in the Z direction, and the clamping spring 201 is disposed in the notch 203; in addition, one end of the bent portion 2012 is connected to the side plate 2, and the other end of the bent portion 2012 is connected to the elastic arm 2013; furthermore, the elastic arm 2013... One end of 13 away from the bend 2012 is connected to the first end 2011 (or contact portion); and the bend 2012 is arc-shaped, the elastic arm 2013 is straight flat, and the first end 2011 (or contact portion) is a combination of arc-shaped bend and straight flat; the above structural design enables the clamping spring 201 to have good elastic deformation capability to provide the holding force or locking force required for clamping the housing 2001, thereby increasing the connection stability between the locking member 100 and the plug connector 200.

[0058] Specifically, the clamping spring 201 has a first elastic force that restricts the first end 2011 from moving in the direction of width (or X direction) of the substrate 1 from inside the receiving space 1001 toward the side plate 2.

[0059] It is understood that when the locking member 100 is sleeved on the housing 2001 along the length direction (or along the Y direction) of the substrate 1, and the clamping spring 201 provides the first elastic force, the first end 2011 abuts against the housing 2001 to restrict the movement of the housing 2001 in the width direction (or in the X direction) of the substrate 1.

[0060] In other words, when the locking component 100 is pre-installed on the housing 2001, the clamping spring 201 can hold the housing 2001 in place. At this time, there is no space between the first end 2011 and the housing 2001, which can effectively prevent the locking component 100 from moving or sliding in the X direction.

[0061] In some embodiments, such as Figures 1-5 As shown, each side plate 2 is provided with a piercing structure 202, and the piercing structure 202 has a protrusion 2021 protruding from the side plate 2 into the receiving space 1001.

[0062] It should be noted that when the locking component 100 is pre-installed on the housing 2001, in the Z direction, the side where the base plate 1 is located is defined as the upper part, and the side where the notch 203 is located is defined as the lower part. Therefore, in this embodiment, the clamping spring 201 and the piercing structure 202 are both located below the side ear 2005, so that the clamping spring 201 and the piercing structure 202 can completely abut against the base 2004, thereby improving the holding reliability of the clamping spring 201 and the piercing structure 202.

[0063] In this embodiment, the puncture structure 202 has a second elastic force that restricts the protrusion 2021 from moving from inside the receiving space 1001 toward the side plate 2 along the width direction (or along the X direction) of the substrate 1.

[0064] To further explain, when the locking member 100 is fitted onto the housing 2001 along the length direction (or along the Y direction) of the substrate 1, and the piercing structure 202 provides a second elastic force, the protrusion 2021 abuts against the housing 2001 to restrict the movement of the housing 2001 in the width direction (or in the X direction) and the length direction (or in the Y direction) of the substrate 1.

[0065] In other words, the puncture structure 202 serves to prevent the locking component 100 from wobbling and falling off in the Y direction.

[0066] Specifically, the piercing structure 202 forms a positioning cavity with the substrate 1 on the side approaching the substrate 1 in the Z direction. During the pre-installation of the locking component 100 into the housing 2001, the side ear 2005 on the housing 2001 can enter the positioning cavity to guide the locking component 100 to move in the Y direction to a preset locking position.

[0067] In this embodiment, when the protrusion 2021 abuts against the housing 2001, the protrusion 2021 provides a receiving space 1001 that, together with the clamping spring, restricts the housing 2001 from disengaging from the locking member 100.

[0068] Since the puncture structure 202 has elastic deformation capability and good durability, the locking component 100 is easy to disassemble after the housing 2001 and the locking component 100 are interlocked and locked, which is beneficial to the multiple plugging and unplugging requirements of the plug connector 200.

[0069] It should be noted that, in combination Figures 1-8It is understood that the conventional locking component 300 is provided with an anti-reverse latch 3001, a bending structure 3002, and a pair of clamping arms 3003, each clamping arm 3003 having a protrusion 3004. The conventional side ear 4001 of the conventional plug connector 400 can cooperate with the bending structure 3002 to guide the conventional locking component 300 to be pre-installed onto the conventional housing 4002 of the conventional plug connector 400. Furthermore, when the conventional locking component 300 is pre-installed onto the conventional housing 4002 of the conventional plug connector 400, the protrusions 3004 on the pair of clamping arms 3003 can abut against the conventional housing 4002 to hold it in place. However, there is a space of movement between the anti-reverse latch 3001 and the conventional housing 4002, which allows the conventional locking component 300 to slide after being pre-installed onto the conventional housing 4002 of the conventional plug connector 400.

[0070] Furthermore, the clamping arm 3003 of the conventional locking component 300 is a planar structure after the material is stamped and cut, and its elastic deformation capability is relatively weak. Compared with the piercing structure 202 of the locking component 100, the clamping arm 3003 has a larger locking force or holding force. Therefore, when the protrusion 3004 and the conventional housing 4002 are interlocked and locked, the conventional locking component 300 is not easy to disassemble, which is not conducive to the multiple insertion and removal requirements of the conventional plug connector 400.

[0071] In some embodiments, according to Figure 1 , Figure 2 and Figure 4 It can be seen that the clamping spring 201 and the piercing structure 202 are arranged along the length direction of the substrate 1.

[0072] It is understood that the puncture structure 202 has a preset first gap 2022 between itself and the substrate 1 on the side of the substrate 1 that is close to the substrate 1 in the thickness direction.

[0073] In some embodiments, by Figures 1-5 It can be seen that when the locking component 100 is sleeved on the housing 2001 along the length direction of the substrate 1, and the clamping spring 201 provides the first elastic force and the piercing structure 202 provides the second elastic force, the housing 2001 is fixed inside the receiving space 1001.

[0074] In some embodiments, refer to Figures 1-5 It can be seen that when the shell 2001 overcomes the first elastic force and the second elastic force, the shell 2001 separates from the interior of the receiving space 1001.

[0075] In some embodiments, please refer to Figure 1 and Figure 2 Each pair of side plates 2 is formed by bending at least a portion of the substrate 1 and is an integral structure with the substrate 1.

[0076] In some embodiments, such as Figure 1 and Figure 2 As shown, the clamping spring 201 is formed by stamping at least a portion of the side plate 2, and is an integral structure with the side plate 2.

[0077] In some embodiments, combined with Figure 1 and Figure 2 It can be seen that the puncture structure 202 is formed by stamping at least a portion of the side plate 2, and is an integral structure with the side plate 2.

[0078] Please refer to Figures 1-5 The plug connector 200 includes: a plug body 2002, a cable 2003, and a housing 2001.

[0079] The plug body 2002 is fixedly installed inside the housing 2001, and one end of the cable 2003 is connected to the plug body 2002.

[0080] In addition, the housing 2001 is detachably connected to the aforementioned locking component 100.

[0081] In some embodiments, by Figures 3-5 It is known that the shell 2001 includes: a base 2004 and a pair of side ears 2005.

[0082] Specifically, a pair of lateral ears 2005 are formed by bending at least a portion of the base 2004, and the pair of lateral ears 2005 and the base 2004 are an integral structure.

[0083] It is understood that the side ear 2005 has a preset first height 2006 in the thickness direction of the base 2004, and the first height 2006 is not greater than the first distance 2022 between the piercing structure 202 of the locking member 100 and the base plate 1 on the side of the base plate 1 close to the base plate 1 in the thickness direction of the base plate 1.

[0084] It should be noted that the base 2004 has a first end and a second end opposite to each other in the Z direction, and the side ear 2005 is formed by bending at least a portion of the base 2004; in other words, one side of the side ear 2005 is connected to the first end of the base 2004, and the other side of the side ear 2005 extends in the Z direction toward the second end of the base 2004; in addition, the side of the side ear 2005 away from the first end of the base 2004 in the Z direction has a predetermined second height with the second end of the base 2004, and there is a predetermined third height between the first end of the base 2004 and the second end of the base 2004; furthermore, the sum of the first height 2006 and the second height 2007 is equal to the third height 2008.

[0085] In this embodiment of the application, the first height 2006 can be 0.45mm, the second height 2007 can be 0.60mm, and the third height 2008 can be 1.05mm.

[0086] Please see Figures 1-8 In the conventional locking component 300, the conventional housing 4002 has a preset height dimension 4004 in the Z direction, and also has a preset locking space (the locking space can be understood as the locking dimension 4003 formed between the lower end of the conventional side ear 4001 and the lower end of the conventional housing); wherein, the aforementioned height dimension is 2.05mm, and the aforementioned locking space (or locking dimension 4003) is 1.45mm.

[0087] The conventional plug connector 400 with a height of 2.05mm is equipped with a conventional locking component 300, which can meet the locking requirements of the conventional plug connector 400 with a height of 2.05mm to a certain extent, and provides a guarantee for the stable connection of the conventional plug connector 400.

[0088] However, as electronic devices continue to develop towards miniaturization and thinner designs, more stringent requirements have been placed on the height of plug connectors, leading to the emergence of plug connectors with lower heights, such as 1.05mm.

[0089] However, the conventional locking component 300 on the existing conventional plug connector 400 with a height of 2.05mm is not suitable for this type of shorter plug connector, which to some extent limits the application of shorter plug connectors in thinner and lighter electronic devices.

[0090] More importantly, once the plug connector and locking mechanism are locked together, removing the locking mechanism becomes extremely difficult. In practical applications of electronic equipment, plug connectors often require multiple insertion and removal operations, such as during equipment debugging, maintenance, or upgrades. The difficulty in removing the existing locking mechanism severely hinders the need for repeated insertion and removal of the plug connector, not only increasing operational difficulty and reducing work efficiency, but also potentially damaging the plug connector due to forced removal, shortening its lifespan, and increasing operating costs.

[0091] In summary, the conventional locking component 300 on the conventional plug connector 400 with a height of 2.05mm has shortcomings in terms of applicable height, structural stability, and operability, making it difficult to meet the needs of miniaturization and thinning of electronic devices as well as the repeated plugging and unplugging of plug connectors in practical applications.

[0092] It should be noted that the housing 2001 of the plug connector 200 can be made of metal materials such as iron so that the plug connector 200 has a grounding function.

[0093] In summary, the locking component and plug connector provided by this utility model embodiment feature a locking component with an added clamping spring. When the locking component is fitted onto the housing of the plug connector along the length of the substrate, and the clamping spring provides a first elastic force, the first end of the clamping spring holds the housing in place, restricting movement of the housing in the width direction of the substrate. This prevents the locking component from having any movement space in the width direction of the substrate after it is pre-installed on the housing. Consequently, the locking component will not shift its position when the plug connector is subjected to external forces or is in a complex vibration environment, thus improving the connection stability of the plug connector and reducing the risk of the plug connector becoming loose. Therefore, the locking component provided by this utility model embodiment has a certain novelty compared to traditional locking components.

[0094] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and all of these fall within the protection scope of the present invention.

Claims

1. A locking component used in a plug connector having a housing, characterized in that, include: A substrate and a pair of side plates, each of the side plates protruding from the substrate and located on opposite sides of the substrate in its width direction; The substrate and the pair of side plates enclose a receiving space, and the housing is detachably installed inside the receiving space; Each of the side plates is provided with a clamping spring, and the clamping spring has a first end that is movable relative to the side plate; The clamping spring has a first elastic force that restricts the first end from moving along the width direction of the substrate from inside the receiving space toward the side plate; When the locking component is sleeved on the housing along the length direction of the substrate, and the clamping spring provides the first elastic force, the first end abuts against the housing to restrict the movement of the housing in the width direction of the substrate.

2. The locking component according to claim 1, characterized in that, Each of the side plates is provided with a piercing structure, and the piercing structure has a protrusion that extends from the side plate into the receiving space; The puncture structure has a second elastic force that restricts the protrusion from moving along the width direction of the substrate from inside the receiving space toward the side plate; When the locking member is fitted onto the housing along the length of the substrate, and the puncturing structure provides the second elastic force, the protrusion abuts against the housing to restrict the movement of the housing in the width and length directions of the substrate.

3. The locking component according to claim 2, characterized in that, The clamping spring and the piercing structure are arranged along the length direction of the substrate; The puncturing structure has a predetermined first distance between itself and the substrate on the side of the substrate that is close to the substrate in the thickness direction.

4. The locking component according to claim 2, characterized in that, When the locking component is sleeved on the housing along the length of the substrate, and the clamping spring provides the first elastic force and the piercing structure provides the second elastic force, the housing is fixed inside the receiving space.

5. The locking component according to claim 2, characterized in that, When the housing overcomes the first elastic force and the second elastic force, the housing detaches from the containment space.

6. The locking component according to claim 1, characterized in that, Each pair of side plates is formed by bending at least a portion of the substrate and is an integral structure with the substrate.

7. The locking component according to claim 1, characterized in that, The clamping spring is formed by stamping at least a portion of the side plate and is an integral structure with the side plate.

8. The locking component according to claim 2, characterized in that, The puncture structure is formed by stamping at least a portion of the side plate and is an integral structure with the side plate.

9. A plug connector, characterized in that, include: Plug body, cable, and housing; The plug body is fixedly installed inside the housing, and one end of the cable is connected to the plug body; The housing is detachably connected to the locking component as described in any one of claims 1-8.

10. The plug connector according to claim 9, characterized in that, The housing includes: The base and a pair of side ears, wherein the pair of side ears are formed by bending at least a portion of the base, and the pair of side ears and the base are an integral structure; The side ear has a preset first height in the thickness direction of the substrate, and the first height is not greater than the first distance between the piercing structure of the locking member and the substrate on the side of the substrate close to the substrate in the thickness direction of the locking member.

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