A sealing device for a circuit board and a household appliance

Abstract

The present invention discloses a sealing device for a circuit board and a household appliance. The sealing device includes a box body having a receiving cavity for placing a circuit board; a box cover mounted on the box body and cooperating with the box body to enclose the circuit board in the receiving cavity, and a wire passing hole is provided in the box body and / or the box cover; a wire harness seal is mounted in the wire passing hole, and a wire groove extending axially along the wire passing hole and recessed from the outer periphery of the wire harness seal to the inside is provided on the wire harness seal for placing and guiding a wire harness. By providing a wire groove on the wire harness seal, the wire harness can be installed in the wire groove, and then the wire harness seal is installed in the wire passing hole in the box body and / or the box cover. It can not only use the wire harness seal to pass the wire harness and connect it to the circuit board in the sealing device, with a simple structure and convenient assembly, but also improve the sealing performance of the wire passing hole, prevent dust from entering the sealing device, and reduce the short circuit of the circuit board caused by dust.

Description

Technical Field

[0001] The present invention belongs to the field of circuit board sealing, and specifically relates to a sealing device for a circuit board and a household appliance. Background Art

[0002] The main control board is generally exposed to the air, or the main control board is treated with potting glue, but the plug-in terminals of the main control board also need to be exposed outside, and it is impossible to avoid the entry of dust, water or detergent solutions, etc., so the main control board needs to be protected.

[0003] In the prior art, a main control board box is provided, and the main control board is arranged in the main control board box. Due to the limitations of the production environment and cost in household appliance manufacturing, it is impossible to perform the entire installation process in a dust-free workshop. In this way, the dust-proof work of the electronic control board becomes very important. Since some main control board boxes need to consider the wire outlet holes for power lines, the existence of the wire outlet holes poses higher requirements for dust prevention. Due to the problem of poor sealing performance, dust easily enters the main control board box through the wire passing holes, resulting in the problem of short circuit of the main control board.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a sealing device for a circuit board. By arranging a wire harness sealing member in the wire passing hole, it can guide the wire harness to pass through the sealing device and be connected to the circuit board, and can also seal the wire passing hole to prevent external dust from entering the sealing device through the wire passing hole, avoiding the short circuit of the circuit board.

[0006] Another object of the present invention is to provide a household appliance with a circuit board having good sealing performance, reducing the failures of the household appliance circuit board.

[0007] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: to provide a sealing device for a circuit board, including,

[0008] A box body having a receiving cavity for placing a circuit board;

[0009] A box cover is installed on the box body, and cooperates with the box body to enclose the circuit board in the receiving cavity. A wire passing hole is provided on the box body and / or the box cover;

[0010] A wire harness sealing member is installed in the wire passing hole. The wire harness sealing member is provided with a wire groove extending along the axial direction of the wire passing hole and recessed from the outer periphery of the wire harness sealing member to the inside for placing and guiding the wire harness.

[0011] In the present invention, a wire groove is provided on the wire harness seal, and the wire harness can be installed in the wire groove, and then the wire harness seal is installed in the wire passing hole in the box body and / or the box cover. The wire harness can be passed through the wire harness seal to be connected to the circuit board in the sealing device. The structure is simple and the assembly is convenient. Moreover, the sealing performance of the wire passing hole can be improved to prevent dust from entering the sealing device and reduce the short circuit of the circuit board caused by dust.

[0012] Further, the wire groove is provided through both axial ends of the wire harness seal.

[0013] Further, the wire groove includes

[0014] a receiving hole, which is axially extended and arranged in the middle part of the wire harness seal;

[0015] a notch, which is axially extended and arranged on the side wall of the wire harness seal and communicates with the receiving hole;

[0016] Preferably, the receiving hole is cylindrical, and the width of the notch is smaller than the diameter of the receiving hole.

[0017] Further, the wire harness seal further includes a limiting portion for restricting the axial movement of the wire harness seal in the wire passing hole.

[0018] Further, the limiting portions are respectively arranged at both axial ends of the wire harness seal. The limiting portion at one end of the wire harness seal is located inside the sealing device, and the limiting portion at the other end is located outside the sealing device.

[0019] Further, the wire harness seal includes a wire passing shaft which is passed through the wire passing hole, and the wire groove is arranged on the wire passing shaft;

[0020] The limiting portion includes a limiting boss which protrudes from the outer peripheral walls at both ends of the wire passing shaft, and the wire groove axially penetrates through the limiting boss;

[0021] Preferably, the limiting boss is an annular limiting boss.

[0022] In the present invention, by setting the limiting portion as a limiting boss, which respectively protrudes from the outer peripheral walls at both axial ends of the wire passing shaft, one end is located inside the sealing device and the other end is located outside the sealing device, the gap between the wire passing hole and the wire harness seal can be blocked, and the sealing performance of the wire passing hole can be further improved.

[0023] Further, the wire passing hole is formed at the joint of the box body and the box cover, and the wire harness seal is rotatably installed in the wire passing hole;

[0024] Preferably, the box body and the box cover respectively have peripheral side walls extending towards opposite sides, and a first notch is provided at one end of the peripheral side wall of the box cover facing the box body;

[0025] The box cover is buckled on the peripheral side wall of the box body, and the first notch and the peripheral side wall of the box body form the wire threading hole;

[0026] Preferably, a second notch is provided at one end of the peripheral side wall of the box body facing the box cover, and the first notch and the second notch cooperate to form the wire threading hole.

[0027] The wire harness seal is rotatably installed in the wire threading hole. After installation, the wire harness seal can be rotated so that the notch is located above the accommodation hole, keeping the wire harness in the accommodation hole, preventing the wire harness from moving out of the notch, being damaged by friction with the wire threading hole, or getting stuck in the notch.

[0028] Further, a convex platform is provided on the outer peripheral edge outside the first notch, and one end of the wire harness seal located outside the sealing device abuts against the convex platform.

[0029] Further, an annular groove is provided on the end face of one end of the peripheral side wall of the box body facing the box cover;

[0030] One end of the peripheral side wall of the box cover opposite to the box body is installed in the annular groove of the box body;

[0031] The convex platform abuts against the end face of the box body on the outer periphery of the annular groove.

[0032] The present invention also provides a household appliance having the sealing device for the circuit board as described in any one of the above.

[0033] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

[0034] (1) By providing a wire groove on the wire harness seal, the wire harness can be installed in the wire groove, and then the wire harness seal is installed in the wire threading hole on the box body and / or the box cover. It can not only use the wire harness seal to thread the wire harness and connect it to the circuit board in the sealing device, with a simple structure and convenient assembly, but also improve the sealing performance of the wire threading hole, prevent dust from entering the sealing device, and reduce the short circuit of the circuit board caused by dust.

[0035] (2) The wire harness seal is rotatably installed in the wire threading hole. After installation, the wire harness seal can be rotated so that the notch is located above the accommodation hole, keeping the wire harness in the accommodation hole, preventing the wire harness from moving out of the notch, being damaged by friction with the wire threading hole, or getting stuck in the notch.

[0036] (3) By setting the limiting part as a limiting boss, which protrudes from the outer peripheral walls at both ends of the wire threading shaft in the axial direction respectively, one end is located inside the sealing device and the other end is located outside the sealing device, the gap between the wire threading hole and the wire harness seal can be blocked, further improving the sealing performance of the wire threading hole.

[0037] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0038] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0039] Figure 1 is a schematic diagram of a sealing device for a circuit board according to the present invention;

[0040] Figure 2 is the present invention Figure 1 an enlarged schematic diagram of part A in;

[0041] Figure 3 is an exploded structural schematic diagram of a sealing device according to the present invention;

[0042] Figure 4 is a schematic diagram of a wire harness seal according to the present invention;

[0043] Figure 5 is a schematic diagram of the box cover in the present invention;

[0044] Figure 6 is another exploded structural schematic diagram of a sealing device according to the present invention.

[0045] In the figures: 1, box body; 11, annular groove; 12, second notch; 13, mounting post; 2, box cover; 21, first notch; 22, boss; 23, mounting ear; 24, reinforcing rib; 3, wire threading hole; 4, wire harness seal; 41, wire groove; 411, receiving hole; 412, notch; 42, limiting part; 421, limiting boss; 43, wire threading shaft; 5, circuit board; 6, mounting seat; 7, sealing ring; 8, glass plate.

[0046] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0047] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] As Figures 1 to 6 shown, the sealing device of the circuit board 5 according to the present invention includes a box body 1, a box cover 2 and a wire harness seal 4.

[0051] The box body 1 has a receiving cavity for placing the circuit board 5. The box cover 2 is mounted on the box body 1 and cooperates with the box body 1 to enclose the circuit board 5 in the receiving cavity. A wire passing hole 3 is provided on the box body 1 and / or the box cover 2. The wire harness seal 4 is mounted in the wire passing hole 3. The wire harness seal 4 is provided with a wire groove 41 extending along the axial direction of the wire passing hole 3 and recessed from the outer periphery to the inside of the wire harness seal 4 for placing and guiding a wire harness (not shown in the figure).

[0052] By providing the wire groove 41 on the wire harness seal 4 in the present invention, the wire harness can be installed in the wire groove 41, and then the wire harness seal 4 can be installed in the wire passing hole 3 on the box body 1 and / or the box cover 2. It can not only use the wire harness seal 4 to pass the wire harness and connect it to the circuit board 5 in the sealing device, with a simple structure and convenient assembly, but also improve the sealing performance of the wire passing hole 3, prevent dust from entering the sealing device, and reduce the short circuit of the circuit board 5 caused by dust.

[0053] The wire passing hole 3 can be provided on the box body 1 or the box cover 2. The wire harness seal 4 is an elastic wire harness seal. The wire harness is installed in the wire groove 41 of the wire harness seal 4, and then the wire harness seal 4 is squeezed and inserted into the wire passing hole 3 on the box body 1 or the box cover 2.

[0054] The wire threading hole 3 can also be formed at the installation and mating position of the box body 1 and the box cover 2.

[0055] Such as Figures 2 to 3 As shown, the wire groove 41 is provided through both axial ends of the wire harness seal 4. In the present invention, the wire groove 41 is provided through both axial ends of the wire harness seal 4, which can facilitate the installation of the wire harness and improve the assembly efficiency.

[0056] Such as Figure 4 As shown, the wire groove 41 includes a receiving hole 411 and a notch 412. The receiving hole 411 is axially extended and provided in the middle part of the wire harness seal 4 for receiving the wire harness. The notch 412 is communicated with the receiving hole 411, and the notch 412 is axially extended and provided on the side wall of the wire harness seal 4.

[0057] Preferably, the wire harness seal 4 is an elastic member.

[0058] During installation, the wire harness enters the internal receiving hole 411 through the notch 412 on the side wall of the wire harness seal 4. The wire harness is threaded through the receiving hole 411.

[0059] Preferably, the receiving hole 411 is cylindrical, and the width of the notch 412 is smaller than the diameter of the receiving hole 411.

[0060] Furthermore, the wire harness seal 4 further includes a limiting portion 42 for restricting the axial movement of the wire harness seal 4 in the wire threading hole 3. By providing the limiting portion 42 in the present invention, the wire harness seal 4 can be prevented from disengaging from the wire threading hole 3 of the sealing device.

[0061] As an implementation scheme, the limiting portions 42 are respectively provided at both axial ends of the wire harness seal 4. One limiting portion 42 at one end of the wire harness seal 4 is located inside the sealing device, and the other limiting portion 42 at the other end is located outside the sealing device.

[0062] In this implementation scheme, by respectively providing the limiting portions 42 at both axial ends of the wire harness seal 4, it is convenient for installation, can play a positioning role during the installation of the wire harness seal 4, and can facilitate the assembly of the wire harness seal 4.

[0063] As another implementation scheme, the limiting portion 42 protrudes and is provided on the middle part of the wire harness seal 4 in the axial direction, and abuts against the inner peripheral wall of the wire threading hole 3. Preferably, a clamping structure matching the limiting portion 42 is provided on the inner peripheral wall of the wire threading hole 3. The limiting portion 42 extends along the circumferential part of the wire harness seal 4, and the limiting portion 42 is an arc-shaped protruding structure.

[0064] As a more preferred embodiment, the wire harness seal 4 includes a wire threading shaft 43 inserted into the wire threading hole 3, and the wire groove 41 is provided on the wire threading shaft 43. The limiting portions 42 are respectively formed by flanging outward from both axial ends of the wire threading shaft 43.

[0065] Preferably, the receiving hole 411 is coaxially arranged with the wire threading shaft 43 and is provided on the axis of the wire threading shaft 43.

[0066] The limiting portion 42 includes a limiting boss 421 protruding from the outer peripheral walls at both axial ends of the wire threading shaft 43 respectively, and the wire groove 41 axially penetrates through the limiting boss 421. Specifically, the notch 412 axially penetrates through the limiting bosses 421 at both ends of the wire harness seal 4.

[0067] Preferably, the outer diameter of the limiting boss 421 is larger than the aperture of the wire threading hole 3.

[0068] In the present invention, by setting the limiting portion 42 as the limiting boss 421, which protrudes from the outer peripheral walls at both axial ends of the wire threading shaft 43 respectively, one end is located inside the sealing device and the other end is located outside the sealing device, the gap between the wire threading hole 3 and the wire harness seal 4 can be blocked, and the sealing performance of the wire threading hole 3 can be further improved.

[0069] Preferably, the wire groove 41 is axially extended and provided on the outer peripheral wall of the wire threading shaft 43. The limiting boss 421 is an annular limiting boss 421.

[0070] As Figure 3 、 Figure 5 and Figure 6 shown, a wire threading hole 3 is formed at the mating portion of the box body 1 and the box cover 2, and the wire harness seal 4 is rotatably installed in the wire threading hole 3.

[0071] In the present invention, by rotatably installing the wire harness seal 4 in the wire threading hole 3 and installing the wire harness connecting the circuit board 5 in the wire groove 41 of the wire harness seal 4, when the wire harness seal 4 is assembled in the wire threading hole 3 of the sealing device, the wire harness seal 4 can be rotated to make the opening of the wire groove 41 face upward, and the wire harness is away from the connection portion of the box body 1 and the box cover 2. On the one hand, it can prevent the wire harness from moving out of the wire groove 41 and rubbing against the connection portion of the box body 1 and the box cover 2. On the other hand, it can also reduce the maximum gap in the wire threading hole 3 and improve the sealing performance of the wire threading hole 3, thereby improving the sealing performance of the sealing device.

[0072] The wire harness seal 4 is rotatably installed in the wire threading hole 3. After installation, the wire harness seal 4 can be rotated to make the notch 412 located above the receiving hole 411, so that the wire harness is held in the receiving hole 411, preventing the wire harness from moving out of the notch 412, rubbing against the wire threading hole 3 and causing damage, or getting stuck in the notch 412.

[0073] The box body 1 and the box cover 2 respectively have peripheral side walls extending to opposite sides, and a first notch 21 is provided on one end of the peripheral side wall of the box cover 2 facing the box body 1. The box cover 2 is buckled on the peripheral side wall of the box body 1, and the first notch 21 and the peripheral side wall of the box body 1 form the threading hole 3.

[0074] The first notch 21 is arranged on the box cover 2, so that the wire harness seal 4 can be conveniently installed on the box cover 2, and then the box cover 2 is installed on the box body 1, and the wire harness seal 4 is installed in the threading hole 3 of the sealing device.

[0075] Preferably, the box cover 2 is buckled in the end surface of the peripheral side wall of the box body 1 , and the first notch 21 and the second notch 12 form the threading hole 3 .

[0076] The first notch 21 is recessed from the peripheral side wall of the box cover 2 toward the end surface of one end of the box body 1 toward the other end, and the first notch 21 is in a "凵" shape or a "U" shape.

[0077] A preferred solution is that a second notch 12 is provided on one end of the peripheral side wall of the box body 1 facing the box cover 2, and the first notch 21 cooperates with the second notch 12 to form the threading hole 3. The second notch 12 is arc-shaped. The threading hole 3 is a round hole.

[0078] Preferably, the length of the first notch 21 in the height direction of the peripheral side wall is greater than the length of the second notch 12 in the height direction of the peripheral side wall.

[0079] like Figures 2 to 3 As shown, a boss 22 is provided on the outer peripheral edge of the outer side of the first notch 21 , and one end of the wiring harness seal 4 located outside the sealing device abuts against the boss 22 .

[0080] An annular groove 11 is provided on the end surface of the peripheral side wall of the box body 1 facing the end of the box cover 2. The end of the peripheral side wall of the box cover 2 opposite to the box body 1 is installed in the annular groove 11 of the box body 1. The boss 22 abuts against the end surface of the box body 1 at the periphery of the annular groove 11.

[0081] A preferred solution is that the boss 22 is arranged on the outer peripheral edge of the first notch 21 outside the annular groove 11 and is an arc-shaped boss 22 .

[0082] The limiting portion 42 of the wire harness seal 4 located outside the sealing device abuts against the boss 22 .

[0083] like Figure 5 As shown, a reinforcing rib 24 is provided inside the box cover 2 , extending from the first notch 21 along the peripheral side wall of the box cover 2 .

[0084] The limiting part 42 at one end of the wire harness seal 4 abuts against the reinforcing rib 24. The reinforcing rib 24 extends from the outer peripheral edge of the first notch 21 located outside the annular groove 11 and abuts against the end face of the box body 1 on the outer periphery of the annular groove 11.

[0085] The limiting bosses 421 at both ends of the wire harness seal 4 are in interference connection with the boss 22 of the box cover 2 and the reinforcing rib 24 respectively in the axial direction, which plays a role in fixing the wire harness seal 4 and further seals the wire passing hole 3.

[0086] Preferably, the reinforcing rib 24 extends from the first notch 21 along the extending direction of the side wall of the box cover 2 to the top wall of the box cover 2, so as to strengthen the strength of the box cover 2 at the position of the first notch 21.

[0087] As Figure 1 and Figure 6 shown, the sealing device further includes a sealing ring 7, which is installed in the annular groove 11 of the box body 1 and is located between the box cover 2 and the box body 1, so as to improve the sealing performance of the assembly of the box cover 2 and the box body 1.

[0088] The sealing device further includes a mounting seat 6 and a circuit board 5. The mounting seat 6 is arranged in the box body 1, and the circuit board 5 is mounted on the mounting seat 6. Preferably, the mounting seat 6 is a mounting box body 1.

[0089] The box body 1 is provided with a mounting post 13 extending towards the box cover 2. The outer peripheral side wall of the box cover 2 is provided with a mounting ear 23, and the mounting ear 23 is provided with a mounting hole. The mounting post 13 of the box body 1 is inserted into the mounting ear 23 of the box cover 2.

[0090] The sealing device further includes a glass plate 8, and the bottom wall of the box body 1 is mounted on the glass plate 8. Preferably, the box body 1 is bonded to the glass plate 8. The circuit board 5 is the main control computer board of a household appliance.

[0091] The present invention also provides a household appliance having the sealing device of any one of the above-mentioned circuit boards 5.

[0092] The household appliances of the present invention include but are not limited to washing machines, dryers, dishwashers, water heaters, refrigerators, televisions, air conditioners, water purifiers, and microwave ovens. The household appliances of the present invention are provided with the above-mentioned sealing device, which can improve the sealing performance of the sealing device of the circuit board 5, reduce the short circuit of the circuit board 5 caused by dust, and reduce the maintenance rate of the household appliance.

[0093] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above to form equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can also be further combined or replaced. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A sealing device for a circuit board, characterized in that: including, a box body having a receiving cavity for placing a circuit board; a box cover mounted on the box body and cooperating with the box body to enclose the circuit board in the receiving cavity, and a wire passing hole is provided on the box body and / or the box cover; a wire harness seal installed in the wire passing hole, and a wire groove extending axially along the wire passing hole and recessed from the outer periphery of the wire harness seal to the inside is provided on the wire harness seal for placing and guiding the wire harness; the wire harness seal includes: a limiting portion for restricting the axial movement of the wire harness seal in the wire passing hole; a wire passing shaft is inserted into the wire passing hole, and the wire groove is provided on the wire passing shaft; a limiting boss protrudes from the outer peripheral walls at both ends of the wire passing shaft, and the wire groove axially penetrates the limiting boss; the wire passing hole is formed at the mating portion of the box body and the box cover, and the wire harness seal is rotatably installed in the wire passing hole; a first notch is provided at one end of the peripheral side wall of the box cover facing the box body, a boss is provided on the outer peripheral edge outside the first notch, and a reinforcing rib is provided inside the box cover and extends along the peripheral side wall of the box cover from the first notch; the limiting bosses at both ends of the wire harness seal are in interference connection with the boss and the reinforcing rib of the box cover axially respectively.

2. The sealing device for a circuit board according to claim 1, wherein: the wire groove penetrates through both axial ends of the wire harness seal.

3. The sealing device for a circuit board according to claim 2, characterized in that: the wire groove includes, a receiving hole extending axially in the middle portion of the wire harness seal; a notch extending axially on the side wall of the wire harness seal and communicating with the receiving hole.

4. The sealing device for a circuit board according to claim 3, characterized in that: the receiving hole is cylindrical, and the width of the notch is smaller than the diameter of the receiving hole.

5. The sealing device for a circuit board according to claim 4, characterized in that: the limiting portions are respectively provided at both axial ends of the wire harness seal, one limiting portion at one end of the wire harness seal is located inside the sealing device, and the other limiting portion at the other end is located outside the sealing device.

6. A sealing device for a circuit board according to claim 5, wherein: the limiting boss is an annular limiting boss.

7. A sealing device for a circuit board according to any one of claims 1-6, wherein: the box body and the box cover respectively have peripheral side walls extending towards the opposite sides, the box cover is buckled on the peripheral side wall of the box body, and the first notch and the peripheral side wall of the box body form the wire passing hole.

8. A sealing device for a circuit board according to claim 7, wherein: a second notch is provided at one end of the peripheral side wall of the box body facing the box cover, and the first notch and the second notch cooperate to form the wire passing hole.

9. The sealing device for a circuit board according to claim 1, characterized in that: an annular groove is provided on the end surface of one end of the peripheral side wall of the box body facing the box cover; one end of the peripheral side wall of the box cover opposite to the box body is installed in the annular groove of the box body; the boss abuts against the end surface of the box body outside the annular groove.

10. A household appliance, characterized in that: having the sealing device for a circuit board according to any one of claims 1-9.

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