Connecting structure of component and waterproof card seat

Abstract

The utility model discloses a connection structure of a component and a waterproof card seat. The connection structure of the component comprises a shell assembly and a grounding piece. The shell assembly is provided with an electronic element; the grounding piece penetrates through the shell assembly and is suitable for being fixedly connected with the circuit board, the grounding piece is used for fixing the shell assembly to the circuit board, and the grounding piece and the electronic element are electrically connected with the circuit board. The grounding piece penetrates through the shell assembly to fix the shell assembly on the circuit board, and the grounding piece is electrically connected with the circuit board. Compared with the prior art, the shell assembly does not need to be fixed on the circuit board through a threaded fastener, so that the circuit board can be prevented from being damaged by the threaded fastener, and the connection reliability between the shell assembly and the circuit board can be improved.

Description

Technical Field

[0001] The present application relates to the field of component connection, and in particular to a component connection structure and a waterproof card holder having the component connection structure. Background Art

[0002] In related art, a waterproof card holder includes a housing and a circuit board. The housing is mounted on the circuit board and contains electronic components electrically connected to the circuit board. When a card is inserted into the housing, the electronic components read the card data. The housing is secured to the circuit board using threaded fasteners. However, the printed circuits on the circuit board are densely packed, and threaded fasteners can easily damage the printed circuits, causing damage to the board. Furthermore, the snap-fit mechanism can easily loosen, making it difficult to securely secure the housing to the circuit board, reducing the reliability of the connection between the housing and the circuit board. Utility Model Content

[0003] In order to prevent the circuit board from being damaged by threaded fasteners and to improve the connection reliability between the housing and the circuit board, the present application provides a connection structure for components.

[0004] The present application further proposes a waterproof card holder.

[0005] The present application provides a connection structure for components using the following technical solution:

[0006] A component connection structure includes: a housing assembly, on which electronic components are installed; a grounding plate, which passes through the housing assembly and is suitable for fixed connection with a circuit board. The grounding plate is used to fix the housing assembly to the circuit board. The grounding plate and the electronic components are both electrically connected to the circuit board.

[0007] By adopting the above technical solution, the grounding plate passes through the housing assembly to secure the housing assembly to the circuit board, and the grounding plate is electrically connected to the circuit board. Compared with the prior art, there is no need to use threaded fasteners to secure the housing assembly to the circuit board, thereby preventing the threaded fasteners from damaging the circuit board, improving the connection reliability between the housing assembly and the circuit board, and reducing the number of fasteners in the component connection structure, thereby reducing the assembly cost of the component connection structure, simplifying the assembly process of the component connection structure, and improving the assembly efficiency of the component connection structure.

[0008] Preferably, the shell assembly includes an upper shell and a lower shell, the upper shell is provided with a first connecting groove, the lower shell is provided with a second connecting groove, the first connecting groove and the second connecting groove are arranged opposite to each other, the grounding plate is provided with a first pressing portion and a second pressing portion spaced apart along the height direction of the shell assembly, the grounding plate passes through the first connecting groove and the second connecting groove in sequence and is fixedly connected to the circuit board, the first pressing portion is pressed against the bottom wall of the first connecting groove, and the second pressing portion is pressed against the bottom wall of the second connecting groove.

[0009] By adopting the above technical solution, the grounding plate presses the upper shell onto the lower shell through the first pressing part, and the grounding plate presses the lower shell onto the circuit board through the second pressing part, thereby preventing the upper shell and / or lower shell from being separated from the grounding plate, and preventing the grounding plate from being unable to fix both the upper shell and the lower shell to the circuit board, thereby improving the connection reliability between the shell assembly and the circuit board.

[0010] Preferably, the circuit board is provided with a connecting hole, and the connecting hole is arranged opposite to the first connecting groove and the second connecting groove. The grounding plate is provided with a connecting portion, and the connecting portion is located at one end of the first pressing portion and the second pressing portion close to the circuit board. The connecting portion extends into the connecting hole and is fixedly connected to the connecting hole.

[0011] By adopting the above technical solution, after the grounding plate passes through the first connecting groove and the second connecting groove in sequence, the connecting portion extends into the connecting hole, and the operator welds the connecting portion into the connecting hole, thereby achieving the technical effect of fixedly connecting the grounding plate to the circuit board, and achieving the technical effect of fixing the shell assembly to the circuit board by the grounding plate.

[0012] Preferably, a first guiding structure is provided on the top wall of the first connecting groove, and the first guiding structure is in guiding cooperation with the grounding plate.

[0013] By adopting the above technical solution, when the grounding plate extends into the first connecting groove, the first guide structure guides the grounding plate, thereby reducing the difficulty of the grounding plate entering the first connecting groove, thereby improving the assembly efficiency of the connection structure of the components.

[0014] Preferably, the top wall of the second connecting groove is provided with a second guiding structure, and the second guiding structure is in guiding cooperation with the grounding plate.

[0015] By adopting the above technical solution, when the grounding plate extends into the second connecting groove, the second guide structure guides the grounding plate, thereby reducing the difficulty of the grounding plate entering the second connecting groove, thereby improving the assembly efficiency of the connection structure of the components.

[0016] Preferably, the side wall of the grounding plate is provided with a first clamping structure, the inner peripheral wall of the first connecting groove or the inner peripheral wall of the second connecting groove is provided with a second clamping structure, and the first clamping structure is clamped and matched with the second clamping structure.

[0017] By adopting the above technical solution, when the grounding plate passes through the first connecting groove and the second connecting groove in sequence and extends into the connecting hole, the first clamping structure and the second clamping structure are engaged with each other, thereby preventing the grounding plate from being separated from the shell assembly and causing the grounding plate to be unable to be welded to the connecting hole, thereby improving the assembly efficiency of the connecting structure of the components.

[0018] Preferably, there are multiple first clamping structures and multiple second clamping structures, and the multiple first clamping structures and multiple second clamping structures are arranged at intervals along the circumferential direction of the grounding plate, and the multiple first clamping structures and multiple second clamping structures are arranged in a one-to-one correspondence.

[0019] By adopting the above technical solution, when one of the multiple first clip structures and / or one of the multiple second clip structures is damaged, the remaining first clip structures in the multiple first clip structures and the remaining second clip structures in the multiple second clip structures are snap-fitted together, thereby preventing the grounding plate from detaching from the shell assembly, resulting in the grounding plate being unable to be welded to the connecting hole, and thereby improving the connection reliability between the grounding plate and the shell assembly.

[0020] Preferably, there are multiple grounding plates, and the multiple grounding plates are arranged in sequence along the circumferential direction of the shell assembly.

[0021] By adopting the above technical solution, multiple grounding plates pass through the shell assembly and are fixedly connected and electrically connected to the circuit board. Such an arrangement can improve the connection reliability between the shell assembly and the circuit board, thereby preventing the shell assembly from being separated from the circuit board.

[0022] Preferably, the grounding plate is provided with a grounding portion, and the grounding portion is electrically connected to the ground wire.

[0023] By adopting the above technical solution, the grounding part and the ground wire are electrically connected, and the static electricity and leakage current on the circuit board flow into the ground wire through the grounding plate, thereby preventing static electricity and leakage current from interfering with the normal operation of electronic components installed in the housing assembly, thereby improving the working stability of the circuit board.

[0024] The present application provides a waterproof card holder adopting the following technical solution:

[0025] A waterproof card holder includes a component connection structure, wherein the component connection structure is the above-mentioned component connection structure.

[0026] By adopting the above technical solution, the grounding plate passes through the housing assembly to secure the housing assembly to the circuit board, and the grounding plate is electrically connected to the circuit board. Compared with the prior art, there is no need to use threaded fasteners to secure the housing assembly to the circuit board, thereby preventing the threaded fasteners from damaging the circuit board, improving the connection reliability between the housing assembly and the circuit board, and reducing the number of fasteners in the component connection structure, thereby reducing the assembly cost of the component connection structure, simplifying the assembly process of the component connection structure, and improving the assembly efficiency of the component connection structure.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The grounding plate passes through the housing assembly to secure the housing assembly to the circuit board, and the grounding plate is electrically connected to the circuit board. Compared with the prior art, threaded fasteners are no longer required to secure the housing assembly to the circuit board, thereby preventing the threaded fasteners from damaging the circuit board. This improves the connection reliability between the housing assembly and the circuit board, reduces the number of fasteners in the component connection structure, and reduces the assembly cost of the component connection structure. It also simplifies the assembly process of the component connection structure and improves the assembly efficiency of the component connection structure.

[0029] 2. The grounding plate presses the upper housing onto the lower housing via the first pressing portion, and the grounding plate presses the lower housing onto the circuit board via the second pressing portion. This prevents the upper housing and / or lower housing from separating from the grounding plate, preventing the grounding plate from being unable to secure both the upper and lower housings to the circuit board, thereby improving the connection reliability between the housing assembly and the circuit board.

[0030] 3. Through the electrical connection between the grounding portion and the ground wire, static electricity and leakage current on the circuit board flow into the ground wire through the grounding plate, thereby preventing static electricity and leakage current from interfering with the normal operation of electronic components installed in the housing assembly, thereby improving the working stability of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of a waterproof card holder according to an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0033] Figure 3 is a cross-sectional view of a waterproof card holder according to an embodiment of the present application;

[0034] Figure 4 yes Figure 3 A magnified schematic diagram of point B in the middle;

[0035] Figure 5 is a schematic diagram of a partial structure of a waterproof card holder according to an embodiment of the present application;

[0036] Figure 6 yes Figure 5 Enlarged schematic diagram of point C in the middle;

[0037] Figure 7 is a cross-sectional view of the waterproof card holder according to another angle of the embodiment of the present application;

[0038] Figure 8 yes Figure 7 Enlarged schematic diagram of point D in the middle.

[0039] Description of reference numerals:

[0040] 100. Connection structure of components; 200. Waterproof card holder;

[0041] 1. Housing assembly; 11. Upper housing; 111. First connecting slot; 112. First guide structure; 12. Lower housing; 121. Second connecting slot; 122. Second guide structure; 123. Second engaging structure; 13. Card insertion slot;

[0042] 2. Grounding plate; 21. First pressing portion; 22. Second pressing portion; 23. Connecting portion; 24. First clamping structure; 25. Grounding portion;

[0043] 3. Circuit board; 31. Connection hole. DETAILED DESCRIPTION

[0044] The following is combined with Figures 1-8 This application is described in further detail.

[0045] An embodiment of the present application discloses a component connection structure 100 .

[0046] Reference Figure 1 and Figure 2 The component connection structure 100 according to the embodiment of the present application includes: a housing assembly 1 and a grounding plate 2. The housing assembly 1 is equipped with electronic components, and the grounding plate 2 passes through the housing assembly 1 and is adapted to be fixedly connected to the circuit board 3. The grounding plate 2 is used to fix the housing assembly 1 to the circuit board 3. The grounding plate 2 and the electronic components are both electrically connected to the circuit board 3.

[0047] Along the height direction of the housing assembly 1, the height direction of the housing assembly 1 can refer to Figure 2In the up and down directions, the upper end of the grounding plate 2 is grounded, and the lower end of the grounding plate 2 passes through the housing assembly 1 and is fixedly connected and electrically connected to the circuit board 3. Compared with fixing the housing assembly 1 to the circuit board 3 by threaded fasteners, such a setting can not only utilize the grounding plate 2 to realize the grounding function of the circuit board 3, but also utilize the grounding plate 2 to fix the housing assembly 1 to the circuit board 3, which can reduce the number of fasteners of the component connection structure 100, thereby reducing the assembly cost of the component connection structure 100, and can simplify the assembly process of the component connection structure 100, thereby improving the assembly efficiency of the component connection structure 100.

[0048] In some specific embodiments, the ground plate 2 may be fixed to the circuit board 3 by welding.

[0049] In some specific embodiments, the housing assembly 1 may include an upper housing 11 and a lower housing 12, the upper housing 11 and the lower housing 12 are connected and matched to define a card insertion slot 13, the card insertion slot 13 is located between the upper housing 11 and the lower housing 12, along the first direction of the housing assembly 1, the open end of the card insertion slot 13 is located at the front end of the housing assembly 1, the first direction of the housing assembly 1 may refer to Figure 1 In the front-to-back direction, the card slot 13 is suitable for inserting a card. Specifically, the card is inserted between the upper shell 11 and the lower shell 12 through the open end of the card slot 13. In some specific embodiments, the card can be a bank card or the like.

[0050] In some other specific embodiments, the housing assembly 1 may be an integrally formed housing, and a card insertion slot 13 is provided on a side wall of the integrally formed housing.

[0051] In some specific embodiments, the electronic component can be a card reading terminal group, which extends into the card insertion slot 13 and is suitable for abutting and electrically connecting with the card. The control chip on the circuit board 3 reads the card data through the card reading terminal group.

[0052] Furthermore, when the shell assembly 1 is constructed as a metal part, the grounding plate 2 is electrically connected to the shell assembly 1. The grounding plate 2 can remove the static electricity carried by the shell assembly 1, thereby preventing the card from being interfered with by static electricity and causing the control chip on the circuit board 3 to be unable to read the card data.

[0053] Thus, the grounding plate 2 passes through the housing assembly 1 to fix the housing assembly 1 to the circuit board 3, and the grounding plate 2 is electrically connected to the circuit board 3. Compared with the prior art, it is not necessary to use threaded fasteners to fix the housing assembly 1 to the circuit board 3, thereby preventing the threaded fasteners from damaging the circuit board 3, and improving the connection reliability between the housing assembly 1 and the circuit board 3. The number of fasteners in the component connection structure 100 can be reduced, thereby reducing the assembly cost of the component connection structure 100, simplifying the assembly process of the component connection structure 100, and improving the assembly efficiency of the component connection structure 100.

[0054] Reference Figure 3 and Figure 4 In some embodiments of the present application, the upper shell 11 is provided with a first connecting groove 111, and the lower shell 12 is provided with a second connecting groove 121. The first connecting groove 111 and the second connecting groove 121 are both configured as through grooves, and along the width direction of the shell assembly 1, the width dimension of the first connecting groove 111 is greater than the width dimension of the second connecting groove 121. The width direction of the shell assembly 1 can refer to the first direction of the shell assembly 1, and the first direction of the shell assembly 1 can refer to Figure 1 In the front-to-back direction, the first connecting groove 111 and the second connecting groove 121 are arranged opposite to each other.

[0055] The grounding plate 2 is provided with a first pressing portion 21 and a second pressing portion 22 spaced apart along the height direction of the shell assembly 1. Specifically, the first pressing portion 21 is located above the second pressing portion 22. Along the width direction of the grounding plate 2, the width dimension of the first pressing portion 21 is greater than the width dimension of the second pressing portion 22. The first pressing portion 21 is arranged opposite to the first connecting groove 111, and the second pressing portion 22 is arranged opposite to the second connecting groove 121. The width direction of the grounding plate 2 can refer to the first direction of the shell assembly 1.

[0056] The grounding plate 2 passes through the first connecting groove 111 and the second connecting groove 121 in sequence and is fixedly connected to the circuit board 3. Specifically, when the grounding plate 2 passes through the first connecting groove 111 and the second connecting groove 121 in sequence and is fixedly connected to the circuit board 3, the first pressing portion 21 is pressed against the bottom wall of the first connecting groove 111, and the second pressing portion 22 is pressed against the bottom wall of the second connecting groove 121. That is, the grounding plate 2 presses the upper shell 11 onto the lower shell 12 through the first pressing portion 21, and the grounding plate 2 presses the lower shell 12 onto the circuit board 3 through the second pressing portion 22, thereby preventing the upper shell 11 and / or the lower shell 12 from separating from the grounding plate 2, and preventing the grounding plate 2 from being unable to fix both the upper shell 11 and the lower shell 12 to the circuit board 3, thereby improving the connection reliability between the shell assembly 1 and the circuit board 3.

[0057] Reference Figure 2-Figure 4In some embodiments of the present application, the circuit board 3 is provided with a connecting hole 31, and the connecting hole 31 is arranged opposite to the first connecting groove 111 and the second connecting groove 121. The grounding plate 2 is provided with a connecting portion 23, and the connecting portion 23 is located at one end of the first pressing portion 21 and the second pressing portion 22 close to the circuit board 3. That is, along the height direction of the shell assembly 1, the first pressing portion 21 is located above the second pressing portion 22, and the connecting portion 23 is located below the second pressing portion 22.

[0058] In addition, the connecting portion 23 extends into the connecting hole 31 and is fixedly connected to the connecting hole 31. Specifically, after the grounding plate 2 passes through the first connecting groove 111 and the second connecting groove 121 in sequence, the connecting portion 23 extends into the connecting hole 31. The operator welds the connecting portion 23 into the connecting hole 31, thereby achieving the technical effect of fixedly connecting the grounding plate 2 to the circuit board 3, and achieving the technical effect of fixing the shell assembly 1 to the circuit board 3 by the grounding plate 2.

[0059] Reference Figure 2 、 Figure 5 and Figure 6 In some embodiments of the present application, a first guide structure 112 is provided on the top wall of the first connecting groove 111, and the first guide structure 112 cooperates with the grounding plate 2 for guidance. Specifically, when the grounding plate 2 extends into the first connecting groove 111, the first guide structure 112 guides the grounding plate 2, thereby reducing the difficulty of the grounding plate 2 entering the first connecting groove 111, thereby improving the assembly efficiency of the connection structure 100 of the components.

[0060] In some specific embodiments, the first guide structure 112 can be constructed as a guiding slope, and the first guide structure 112 is arranged around the top wall of the first connecting groove 111. In this way, when the grounding plate 2 extends into the first connecting groove 111, the first guide structure 112 can guide the grounding plate 2 from multiple directions, thereby further reducing the difficulty of the grounding plate 2 entering the first connecting groove 111, and further improving the assembly efficiency of the connection structure 100 of the components.

[0061] Reference Figure 5 and Figure 6 In some embodiments of the present application, a second guide structure 122 is provided on the top wall of the second connecting groove 121, and the second guide structure 122 cooperates with the grounding plate 2 for guidance. Specifically, when the grounding plate 2 extends into the second connecting groove 121, the second guide structure 122 guides the grounding plate 2, thereby reducing the difficulty of the grounding plate 2 entering the second connecting groove 121, thereby improving the assembly efficiency of the connection structure 100 of the components.

[0062] In some specific embodiments, the second guide structure 122 can be constructed as a guiding slope, and the second guide structure 122 is arranged around the top wall of the second connecting groove 121. In this way, when the grounding plate 2 extends into the second connecting groove 121, the second guide structure 122 can guide the grounding plate 2 from multiple directions, thereby further reducing the difficulty of the grounding plate 2 entering the second connecting groove 121, and further improving the assembly efficiency of the connection structure 100 of the components.

[0063] Reference Figure 7 and Figure 8 In some embodiments of the present application, a first snap-fitting structure 24 is provided on the side wall of the grounding plate 2, and a second snap-fitting structure 123 is provided on the inner peripheral wall of the first connecting groove 111 or the inner peripheral wall of the second connecting groove 121, and the first snap-fitting structure 24 is snap-fitted with the second snap-fitting structure 123.

[0064] In some specific embodiments, along the second direction of the housing assembly 1, the second direction of the housing assembly 1 may refer to Figure 1 In the left and right directions, the right side wall of the grounding plate 2 is provided with a first clamping structure 24, and the first connecting groove 111 is provided with a second clamping structure 123. When the grounding plate 2 passes through the first connecting groove 111 and the second connecting groove 121 in sequence and extends into the connecting hole 31, the first clamping structure 24 and the second clamping structure 123 are clamped and matched, thereby preventing the grounding plate 2 from being separated from the shell assembly 1, resulting in the grounding plate 2 being unable to be welded to the connecting hole 31, thereby improving the assembly efficiency of the component connection structure 100.

[0065] In some specific embodiments, one of the first clamping structure 24 and the second clamping structure 123 can be constructed as a clamping protrusion, and the other of the first clamping structure 24 and the second clamping structure 123 can be constructed as a clamping recess, and the clamping protrusion extends into the clamping recess and engages with the clamping recess.

[0066] In some embodiments of the present application, there are multiple first clip structures 24 and multiple second clip structures 123, and the multiple first clip structures 24 and multiple second clip structures 123 are all arranged spaced apart along the circumferential direction of the grounding plate 2, and the multiple first clip structures 24 and multiple second clip structures 123 are arranged in a one-to-one correspondence.

[0067] Multiple first clip structures 24 are clipped into engagement with corresponding second clip structures 123. When one of the multiple first clip structures 24 and / or one of the multiple second clip structures 123 is damaged, the remaining first clip structures 24 in the multiple first clip structures 24 and the remaining second clip structures 123 in the multiple second clip structures 123 are clipped into engagement with each other, thereby preventing the grounding plate 2 from being separated from the shell assembly 1, resulting in the grounding plate 2 being unable to be welded to the connecting hole 31, thereby improving the connection reliability between the grounding plate 2 and the shell assembly 1.

[0068] Reference Figure 1 and Figure 3 In some embodiments of the present application, there are multiple grounding plates 2, and the multiple grounding plates 2 are arranged in sequence along the circumferential direction of the shell assembly 1. The multiple grounding plates 2 all pass through the shell assembly 1 and are fixedly connected and electrically connected to the circuit board 3. Such an arrangement can improve the connection reliability between the shell assembly 1 and the circuit board 3, thereby avoiding the shell assembly 1 from being separated from the circuit board 3.

[0069] Furthermore, when one of the multiple grounding plates 2 is damaged, static electricity and leakage current on the circuit board 3 flow out of the circuit board 3 through the undamaged grounding plate 2, thereby improving the working reliability of the component connection structure 100.

[0070] Furthermore, there are multiple first connection grooves 111, multiple second connection grooves 121 and multiple connection holes 31, and the multiple first connection grooves 111, multiple second connection grooves 121 and multiple connection holes 31 are all spaced apart along the circumferential direction of the shell assembly 1, and the multiple first connection grooves 111, multiple second connection grooves 121, multiple connection holes 31 and multiple grounding plates 2 are arranged one by one. Such an arrangement can further improve the connection reliability between the shell assembly 1 and the circuit board 3.

[0071] Reference Figure 2 and Figure 4 In some embodiments of the present application, the grounding plate 2 is provided with a grounding portion 25, and the grounding portion 25 is electrically connected to the ground wire. Specifically, along the height direction of the shell assembly 1, the grounding portion 25 is provided at the upper end portion of the grounding plate 2, that is, the grounding portion 25 is located above the first pressing portion 21. Through the electrical connection between the grounding portion 25 and the ground wire, the static electricity and leakage current on the circuit board 3 flow into the ground wire through the grounding plate 2, thereby preventing static electricity and leakage current from interfering with the normal operation of the electronic components installed in the shell assembly 1, thereby improving the working stability of the circuit board 3.

[0072] Based on this, the present application further discloses a type of card holder. According to the embodiment of the present application, the waterproof card holder 200 includes: a component connection structure 100, and the component connection structure 100 is the component connection structure 100 described in the above embodiment.

[0073] According to the waterproof card holder 200 described in the embodiment of the present application, the waterproof card holder 200 includes a component connection structure 100, through which a grounding plate 2 passes through the housing assembly 1 to secure the housing assembly 1 to the circuit board 3, and the grounding plate 2 is electrically connected to the circuit board 3. Compared with the prior art, there is no need to use threaded fasteners to secure the housing assembly 1 to the circuit board 3, thereby preventing the threaded fasteners from damaging the circuit board 3, improving the connection reliability between the housing assembly 1 and the circuit board 3, and reducing the number of fasteners in the component connection structure 100, thereby reducing the assembly cost of the component connection structure 100, simplifying the assembly process of the component connection structure 100, and improving the assembly efficiency of the component connection structure 100.

[0074] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A connection structure of components, characterized in that: include: A housing assembly (1), wherein the housing assembly (1) is equipped with electronic components; A grounding plate (2), the grounding plate (2) passing through the housing assembly (1) and adapted to be fixedly connected to the circuit board (3), the grounding plate (2) being used to fix the housing assembly (1) to the circuit board (3), the grounding plate (2) and the electronic component being electrically connected to the circuit board (3).

2. The component connection structure according to claim 1, characterized in that: The housing assembly (1) comprises an upper housing (11) and a lower housing (12); the upper housing (11) is provided with a first connecting groove (111); the lower housing (12) is provided with a second connecting groove (121); the first connecting groove (111) and the second connecting groove (121) are arranged opposite to each other; the grounding plate (2) is provided with a first pressing portion (21) and a second pressing portion (22) spaced apart along the height direction of the housing assembly (1); the grounding plate (2) passes through the first connecting groove (111) and the second connecting groove (121) in sequence and is fixedly connected to the circuit board (3); the first pressing portion (21) is pressed against the bottom wall of the first connecting groove (111); and the second pressing portion (22) is pressed against the bottom wall of the second connecting groove (121).

3. The component connection structure according to claim 2, characterized in that: The circuit board (3) is provided with a connection hole (31), and the connection hole (31) is arranged opposite to the first connection groove (111) and the second connection groove (121). The grounding plate (2) is provided with a connection portion (23), and the connection portion (23) is located at one end of the first pressing portion (21) and the second pressing portion (22) close to the circuit board (3). The connection portion (23) extends into the connection hole (31) and is fixedly connected to the connection hole (31).

4. The component connection structure according to claim 2, characterized in that: The top wall of the first connecting groove (111) is provided with a first guiding structure (112), and the first guiding structure (112) is in guiding cooperation with the grounding plate (2).

5. The component connection structure according to claim 2, characterized in that: The top wall of the second connecting groove (121) is provided with a second guiding structure (122), and the second guiding structure (122) is in guiding cooperation with the grounding plate (2).

6. The component connection structure according to claim 2, characterized in that: A first clamping structure (24) is provided on the side wall of the grounding plate (2), a second clamping structure (123) is provided on the inner peripheral wall of the first connecting groove (111) or the inner peripheral wall of the second connecting groove (121), and the first clamping structure (24) is clamped and matched with the second clamping structure (123).

7. The component connection structure according to claim 6, characterized in that: There are a plurality of the first clamping structures (24) and the second clamping structures (123), and the plurality of the first clamping structures (24) and the plurality of the second clamping structures (123) are spaced apart along the circumferential direction of the grounding plate (2), and the plurality of the first clamping structures (24) and the plurality of the second clamping structures (123) are arranged in a one-to-one correspondence.

8. The component connection structure according to claim 1, characterized in that: There are a plurality of grounding plates (2), and the plurality of grounding plates (2) are arranged in sequence along the circumferential direction of the housing assembly (1).

9. The component connection structure according to claim 1, characterized in that: The grounding plate (2) is provided with a grounding portion (25), and the grounding portion (25) is electrically connected to a ground wire.

10. A waterproof card holder, characterized in that: include: A component connection structure (100), wherein the component connection structure (100) is a component connection structure (100) according to any one of claims 1 to 9.

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