Water blocking structure and electronic device

Abstract

The present application provides a water blocking structure for an electronic device and an electronic device, which includes a water blocking sheet including a main fixing area for being fixed on a first face of a housing of the electronic device and a covering area extending beyond the housing of the electronic device from the main fixing area in a first direction, an elongated portion provided at a distal end of the covering area away from the main fixing area in the first direction, having an additional fixing area and extending beyond the covering area in a second direction opposite to the first direction in an assembled state, for being fixed on a second face of the housing opposite to the first face by the additional fixing area; and / or a slit provided at the main fixing area, extending in a third direction and partially cutting the main fixing area in the third direction, wherein the third direction is angled with respect to the first direction and the second direction.

Description

Technical Field

[0001] The present invention relates to a water-blocking structure for electronic devices and an electronic device including such a water-blocking structure. Background Technology

[0002] Existing automobiles are equipped with various electronic devices that can serve as electronic controllers for various components, such as electronic controllers for electric motors or internal combustion engines, electronic controllers for airbags, or electronic controllers for steering systems. These electronic controllers typically have a housing, a circuit board assembly housed within the housing, and an electrical connector for electrical connection to the circuit board assembly. This electrical connector, in order to connect to a mating external electrical connector, can be accessed from outside the housing or partially exposed to the outside. Therefore, it is necessary to ensure not only the waterproofness of the circuit board assembly but also the waterproofness of the electrical connector or external electrical connector to prevent functional failure.

[0003] It should be noted that the content described herein is only to provide background information in relation to this disclosure and does not necessarily belong to the prior art. Summary of the Invention

[0004] Depending on the specific aspects, the object of this invention is to improve the water resistance of electronic devices and thereby enhance their operational reliability.

[0005] Furthermore, the present invention aims to solve or alleviate other technical problems existing in the prior art.

[0006] According to a first aspect of the present invention, a water-blocking structure for an electronic device is provided, comprising a water-blocking plate including a main fixing region and a covering region, wherein the main fixing region is used for fixing to a first surface of a housing of the electronic device, and the covering region extends from the main fixing region along a first direction beyond the housing of the electronic device, wherein...

[0007] An elongated portion is provided at the far end of the covered area away from the main fixing area along a first direction. The elongated portion has an additional fixing area and extends beyond the covered area in a second direction opposite to the first direction in the assembled state, so as to be fixed to the second surface of the housing opposite to the first surface by the additional fixing area.

[0008] And / or, a seam is provided at the main fixing area, the seam extending along a third direction and partially cutting the main fixing area along the third direction, wherein the third direction is at an angle to the first direction and the second direction.

[0009] Optionally, in a water-blocking structure according to an embodiment of the present invention, the additional fixing area includes a first additional fixing area and a second additional fixing area, wherein the first additional fixing area is located at the free end of the elongated portion and is used to fix it to the housing of the electronic device, and the second additional fixing area overlaps with the covering area and is used to fix it to the covering area.

[0010] Optionally, in a water-blocking structure according to an embodiment of the present invention, a flexible transition section is provided between the far end of the covered area and the elongated portion. At the transition section, the water-blocking sheet can be folded around the folding axis so that the elongated portion extends beyond the covered area along the second direction.

[0011] Optionally, in a water-blocking structure according to an embodiment of the present invention, the water-blocking sheet is cut from a transparent sheet.

[0012] And / or, the seam is a cut portion formed by cutting, or the seam is a slot formed by blanking.

[0013] Optionally, in a water-blocking structure according to an embodiment of the present invention, the opening includes a section that gradually extends obliquely towards both ends from its central position along a second direction.

[0014] Optionally, in a water-blocking structure according to an embodiment of the present invention, the seam opening is provided with a tear-resistant section at its end, the tear-resistant section extending gradually and obliquely from the end of the seam opening along a first direction, or the tear-resistant section extending gradually and obliquely from its central position towards both ends along the first direction.

[0015] Optionally, in a water-blocking structure according to an embodiment of the present invention, the opening is semi-circular or semi-elliptical.

[0016] Optionally, in a water-blocking structure according to an embodiment of the present invention, the water-blocking sheet is glued to the housing of the electronic device, and in the main fixing area, adhesive layers are respectively provided on two parts located on both sides of the seam in the third direction.

[0017] According to a second aspect of the present invention, an electronic device is also provided, comprising:

[0018] case;

[0019] Circuit board assembly housed within the housing;

[0020] An electrical connector, which is electrically connected to the circuit board assembly; and

[0021] As described above, the water-blocking structure has a water-blocking plate fixed to the housing and covers the electrical connector by means of the covering area extending beyond the housing in the first direction, so as to prevent water from flowing to the electrical connector.

[0022] Optionally, in an electronic device according to an embodiment of the present invention, the electronic device is an electronic controller for an automotive airbag.

[0023] In the water-blocking structure for electronic devices described above, the double-sided adhesive fixation achieved through the elongated portion and the main fixing area can at least alleviate the problem of water-blocking sheet peeling off due to external forces. Even when subjected to external forces that tend to peel off the water-blocking sheet, the seam at the main fixing area ensures that a portion of the water-blocking sheet remains fixed to the electronic device's housing. Therefore, based on the improved fixation strength of this water-blocking structure, the waterproof protection of the electronic device can be improved, thereby enhancing its operational reliability. Attached Figure Description

[0024] Referring to the accompanying drawings, the above and other features of the present invention will become apparent, wherein,

[0025] Figure 1 An electronic device according to one embodiment of the present invention is shown, wherein the water-blocking structure is removed from the housing;

[0026] Figure 2 A water-blocking structure in its deployed state is shown according to an embodiment of the present invention;

[0027] Figure 3 A water-blocking structure in a folded state according to an embodiment of the present invention is shown;

[0028] Figure 4 A water-blocking structure fixed to the housing of an electronic device according to an embodiment of the present invention is shown from an oblique angle above;

[0029] Figure 5 The following is shown from the lower diagonal: Figure 4 Water-blocking structure;

[0030] Figure 6 A water-blocking structure fixed to the housing of an electronic device according to one embodiment of the present invention is shown;

[0031] Figure 7 The enlarged diagram shows the data separately based on... Figure 6 The arc-shaped opening of the water-retaining structure;

[0032] Figure 8 A water-blocking plate of a water-blocking structure according to an embodiment of the present invention is shown;

[0033] Figure 9 A water-blocking plate of a water-blocking structure according to an embodiment of the present invention is shown;

[0034] Figure 10 The enlarged diagram shows the data separately based on... Figure 9 The arc-shaped opening of the water-blocking structure. Detailed Implementation

[0035] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0036] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," "third," and similar expressions are used for descriptive and distinguishing purposes only and should not be construed as indicating or implying the relative importance of the corresponding components.

[0037] Figure 1 A perspective view of an electronic device according to one embodiment of this application is shown. The electronic device 100 may be, but is not limited to, an electronic control unit (ECU) for an automotive airbag. The electronic device 100 has a housing 110. An electrical connector 120 is mounted in the wall of the housing 110, which is used for electrical connection, on one hand, to a circuit board assembly (not shown) housed in the housing 110, and on the other hand, for electrical connection to a mating external electrical connector (not shown). The electrical connector 120 is accessible from the outside, or the electrical connector 120 is exposed outside or extends from the housing 110. This is merely an example only. Figure 1 The electrical connector 120 shown has three terminal interfaces arranged side by side. However, the type of electrical connector and the terminal interfaces it contains can be modified as needed.

[0038] Combination Figure 1 and Figure 4The housing 110 of the electronic device includes a body 111 and a base plate 112. The body 111 has a top wall 113 and a side wall 114 extending from the top wall. The lower edge of the side wall defines a housing opening, which is covered below by the base plate 112 fixed to the body 111. The base plate 112 is used for fastening at the point of use, for example, by threaded fasteners. Figure 1 In this configuration, the base plate 112 is fastened to the use position at the fastening area 115 by means of a fastener passing through a hole located therein. It should be understood by those skilled in the art that the above-described method of fastening the base plate 112 to the use position is merely exemplary and not limiting.

[0039] Considering that the electrical connector 120 or its mating external electrical connector is exposed outside the housing 120, the electronic device according to the invention further includes a water-retaining structure 200 to improve its waterproofness. Figure 1 , Figure 4 and Figure 6 The water-blocking structure 200 is fixed to the main body 111 of the electronic device's housing, specifically to its top wall 113. It should be understood by those skilled in the art that the arrangement of the water-blocking structure is merely exemplary and not limiting, and the arrangement can be adjusted according to the electronic components to be covered.

[0040] Figure 2 and Figure 3 A water-blocking sheet 210 of a water-blocking structure 200 according to one embodiment is shown separately. It may be made of a transparent sheet, such as a plastic sheet; specifically, the water-blocking sheet 210 may be cut from a plastic sheet. Here, it can be seen that the water-blocking sheet 210 includes a main fixing region 211 and a covering region 212. It should be understood by those skilled in the art that the main fixing region, and the additional fixing regions described below, refer to regions configured for fixing in a predetermined position, such as regions for fixing to the housing of an electronic device or regions for fixing to the water-blocking sheet itself. Furthermore, it should be understood by those skilled in the art that the covering region refers to regions configured for covering, such as regions for covering the electrical connector 120, external electrical connectors, or other electronic components that are accessible from the outside or exposed to the outside.

[0041] The main fixing area 211 is used for fixing to the housing 110 of the electronic device. For example, in... Figures 4 to 6 As shown, the main fixing region is fixed to the upper surface (i.e., the first surface) of the top wall 113 in the assembled state. The main fixing region 211 is glued to the top wall 113, wherein the adhesive layer that provides the fixing function is... Figure 2The adhesive layer is indicated by a slash. This adhesive layer may involve, but is not limited to, acrylic adhesives, and may be any type of adhesive provided that it meets the adhesive requirements, such as other water-soluble adhesives.

[0042] according to Figure 2 The dimension h1 of the adhesive layer along the first direction and the dimension h2 of the area without an adhesive layer along the first direction can be determined according to the required adhesive strength. Figure 2 In this case, the adhesive layer extends across the entire width of the water-retaining plate 210, perpendicular to the first direction. However, the adhesive layer may also extend across a portion of said width.

[0043] The covering area 212 is adjacent to the main fixing area 211 and extends beyond the housing 110 from the main fixing area 211 along a first direction to cover the electrical connector that can be accessed or exposed from the outside and thereby prevent water from entering it. Here, the first direction is... Figure 2 and Figure 4 The arrowhead is represented by a solid line.

[0044] exist Figure 2 It can also be seen that two elongated portions 213 are provided at the far end (lower end in the figure) of the covered area 212 away from the main fixing area 211 along the first direction. However, those skilled in the art should understand that, as needed, a single elongated portion arranged in the middle may also be provided, or more evenly arranged elongated portions may be provided. The dimension h3 of the elongated portion 213 along the first direction is larger than the dimension h2 of the covered area 212, so that the elongated portion 213, in the assembled state, can be arranged along a second direction opposite to the first direction (where it is located in the first direction). Figure 2 and Figure 4 The elongated portion 213 (indicated by the dashed arrow) extends beyond the covered area 212, thus securing it at least at its free end to the lower surface (i.e., the second surface, which is opposite to the first surface) of the top wall 113. Here, the securing effect caused by the elongated portion 213 supplements the securing effect of the main securing area 211. This double-sided securing method, i.e., simultaneously securing it to both the upper and lower surfaces of the top wall 113, increases the securing strength of the baffle 210 and thereby solves or mitigates the problem of the baffle 210 detaching from the top wall due to external forces.

[0045] exist Figure 2 In the embodiment shown, an adhesive layer serving as an additional fixing area is evenly distributed over the entire elongated portion 213, which... Figure 2 The middle part is indicated by a slash. Combined with... Figures 3 to 5With the water-blocking structure 200 installed on the housing 110, on the one hand, the elongated portion 213 is fixed to the lower surface of the top wall 113 by means of an adhesive layer at its free end (i.e., a first additional fixing area); on the other hand, the elongated portion 213 is fixed to the covering area 212 by means of an adhesive layer overlapping with the covering area 212 (i.e., a second additional fixing area). Here, by using the aforementioned second additional area to make the elongated portion 213 and the covering area 212 a single unit, the problem of the water-blocking plate 210 cracking due to external forces on the elongated portion 213 can be avoided, and the overall fixing strength between the water-blocking plate 210 and the housing 110 can also be improved.

[0046] However, the elongated portion 213 is not required to have the combination of the first additional fixing region and the second additional fixing region described above; it may only have the first additional fixing region located at the free end for fixing to the housing of the electronic device.

[0047] Instead of uniformly distributing the adhesive layer on the elongated portion, optionally, only a portion of the elongated portion 213 may be an additional fixing area with the adhesive layer. For example, the adhesive layer may occupy a portion of the dimension h3 of the elongated portion 213 along the first or second direction, or a portion of the dimension b1 of the elongated portion 213 along a direction perpendicular to the first or second direction. For example, there may be a gap between the edge of the additional fixing area and the edge of the elongated portion 213. Furthermore, it is also feasible for the adhesive layer of the additional fixing area to be provided discontinuously on the elongated portion 213, for example, provided in sections on the elongated portion 213. Here, those skilled in the art will understand that the arrangement of the adhesive layer of the elongated portion 213 used as the additional fixing area can be modified as needed.

[0048] Combination Figures 3 to 5 A flexible transition section 214 is also provided between the distal end of the covered area 212 and the elongated portion 213. Through this transition section, the water-retaining plate 210 can fold around the folding axis, thereby allowing it to... Figure 2 The unfolded state shown is the same as in Figures 3 to 5 The device switches between the folding states shown, wherein the folding axis is perpendicular to either the first or second direction. In the folded state, the elongated portion 213 extends beyond the covering area 212 along the second direction to be fixed to the second surface of the top wall 113 of the housing. This foldability of the elongated portion simplifies the installation process of the water-blocking structure. Specifically, after the water-blocking plate 210 is fixed to the upper surface of the top wall 113 by the adhesive layer of the main fixing area 211, the elongated portion only needs to be folded and fixed to the lower surface of the top wall 113 by its adhesive layer.

[0049] Instead of the aforementioned foldability, it is also feasible for the elongated portion 213 to be non-foldable. Here, the elongated portion 213 is configured to always extend beyond the covering area 212 in a second direction from the far end of the covering area 212, so that it can be fixed to the lower surface of the top wall 113 at least at the free end of the elongated portion 213, and in particular glued to the lower surface.

[0050] Here, the water-blocking plate 210 can be a single piece. The aforementioned main fixing area 211, covering area 212 and elongated portion 213 are integrally formed, especially integrally formed from transparent sheet material.

[0051] Figure 6 and Figure 7 A water-blocking plate 210 according to another embodiment is shown, which also includes a main fixing region 211 and a covering region 212, wherein the two regions are connected by... Figure 6 The main fixing area 211 is defined by the dashed lines drawn in the figure. The main fixing area 211 is fixed to the top wall 113 by an adhesive layer thereon, while the covering area 212 extends from the main fixing area 211 and protrudes beyond the housing 110 to cover externally accessible or exposed electronic components and thus provide waterproof protection. Four slits 215 are provided at the main fixing area 211, extending and arranged along a third direction indicated by the dotted-line arrows, which is perpendicular to the aforementioned first and second directions. Here, the main fixing area is partially cut along the third direction by the slits 215, such that the two parts on either side of the slit 215 (located above and below in the figure) are still partially connected. The slits 215 interrupt the transmission of external force from the distal end of the covering area 212 in a direction away from the covering area, i.e., prevent the external force from being further transmitted towards the still-fixed main fixing area 211, thereby effectively preventing the water-retaining plate 210 from being completely peeled off from the top wall 113. If adhesive layers are provided in the area above and below the seam 215 at the main fixing area 211, the part of the main fixing area that is peeled off from the shell due to external force can be glued back to the shell when the external force is removed.

[0052] Here, "partially cut" and "partially connected" mean that the water-blocking plate 210 is not separated into two completely separate parts by the seam 215.

[0053] Furthermore, this third direction is not necessarily perpendicular to the first or second direction; it can be at an angle to either direction, such as an acute angle. This third direction can be oriented according to the external force typically applied to the water-retaining plate.

[0054] For example, in order to form the two parts that are partially connected to each other, the seam 215 does not extend to the edge of the main fixing area 211, that is, there is a gap between the seam 215 and the edge of the main fixing area 211.

[0055] Exemplarily, it is also possible that, in order to form the two parts that are partially connected to each other, the seam 215 may extend to the edge of the main fixing region 211, but the seam 215 is discontinuous overall. As in Figure 8 As shown, the main fixing area 211 of the water-blocking plate has multiple slots 215, wherein the slots at the ends extend to the edge of the main fixing area 211, and the ends of two adjacent slots are not joined. Figure 6 and Figure 7 The difference is, Figure 8 The curved seam shown is not a semicircle. However, those skilled in the art should understand that the shape of the seam described above is merely exemplary and not limiting, and the curved seam can be modified as needed.

[0056] For example, it is also possible to, such as Figure 6 and Figure 9 As shown, in order to form the two parts that are partially connected to each other, the multiple seams 215 as a whole do not extend to the edge of the main fixing area 211 and the ends of two adjacent seams are not connected.

[0057] Combination Figure 6 If an external force is applied to the water-retaining plate 210 at the distal end of the covered area 212, the force tends to peel the water-retaining plate 210 from the top wall 113. The portion below the seam 215 will peel off, thus protecting the portion above the seam from the external force. In summary, even with a large external force applied to the covered area 212, the main fixing area 211 remains partially fixed to the top wall 113, and the water-retaining plate 210 will not peel off from the electronic device housing 110.

[0058] from Figure 6 It can also be seen that the four seams 215 are arranged parallel to each other and evenly in the main fixing area 211. However, those skilled in the art should understand that the number of seams is not limited; there may be only one seam, or two seams, or three seams, or even more seams. Furthermore, those skilled in the art should also understand that the arrangement of the multiple seams is not limited and can be modified according to the external forces typically applied.

[0059] from Figure 6 and Figure 7Furthermore, it can be seen that the seam opening 215 is a substantially semi-circular arc-shaped seam opening that gradually extends from the middle position towards both ends along a second direction. In other words, the arc-shaped seam opening has protrusions that project towards the covered area 212. Here, the seam opening 215 is a cut portion formed by cutting, meaning a seam opening not created by blanking and without a fixed width. However, the aforementioned semi-circular arc-shaped seam opening is not limiting; the arc-shaped seam opening can also be a truncated circle, a semi-ellipse, a truncated ellipse, or a polygon.

[0060] Of course, it is also possible for the seam 215 to be triangular or substantially triangular, which extends gradually from the middle position along the second direction to both ends.

[0061] from Figure 7 It can also be clearly seen that a semi-circular tear-resistant section 216 is provided at the end of the semi-circular seam 215. Its direction is opposite to that of the end of the arc-shaped seam and it gradually extends obliquely towards both ends from its central position along a first direction. In other words, the semi-circular tear-resistant section 216 has a protrusion facing away from the covering area 212 and a recess facing the covering area 212. In this case, when the portion below the main fixing area 211 is peeled off from the top wall 113 due to external force, the tear-resistant section 216 prevents the external force from being further transmitted upwards from the end of the seam 215 away from the covering area 212 along a second direction, thereby preventing the water-blocking plate 210 from being torn around the end of the seam 215. However, those skilled in the art should understand that the above-described semi-circular tear-resistant section is merely exemplary and not limiting.

[0062] Alternatively, the tear-resistant section 216 can be an arc-shaped section that gradually extends obliquely from the end of the seam along a first direction, specifically, in the accompanying drawings, gradually extending obliquely downwards. This tear-resistant section prevents external forces from continuing to be transmitted in a direction that tends to peel away the portion of the main fixing area 211 still fixed to the top wall 113, thereby ensuring that no tearing occurs around the end of the seam and maintaining the fixing strength of the water-retaining plate to the top wall 113.

[0063] In another embodiment, it is also possible that the tear-resistant section 216 is a straight section, for example, extending obliquely downward along a first direction toward the distal end of the covered area 212.

[0064] Figure 9 and Figure 10A water-blocking plate 210 according to another embodiment is shown, wherein four arc-shaped slots 215 are provided in the main fixing area 211, each approximately semi-circular and spaced apart from each other. These arc-shaped slots 215 are slots formed by blanking. Here, "slots formed by blanking" should be understood in contrast to the aforementioned "cut portions formed by cutting," referring to slots with a certain width. For example, considering the limitations of the blanking process, the lower limit of the width of the slots can be 1 mm, and the upper limit can be set as needed.

[0065] from Figure 9 It can also be deduced that there is a gap (h4) between the uppermost end of the seam opening 215 as a whole and the upper edge of the main fixing area 211, and a gap (h6) between the lowermost end of the seam opening 215 as a whole and the lower edge of the main fixing area 211. These two gaps h4 and h6 can be related to the overall dimension h5 of the seam opening 215 itself. For example, h4:h5:h6 can be 1:2:1. However, those skilled in the art should also understand that the values ​​of h4, h5, and h6, or their relationship, can be modified according to the required fixing strength and the external forces typically applied.

[0066] from Figure 10 It can be seen from this that, compared with Figure 7 The difference shown is that the tear-resistant section 216 at the end of the slot 215, which is implemented as a slot, is a widened hole that extends obliquely downward toward the covering area 212 in the first direction to prevent external force from being transmitted further upward to the part of the main fixing area 211 that is still fixed to the top wall 113, thereby preventing tearing around the end and ensuring the fixing strength of the water baffle 210 to the housing 110.

[0067] In an embodiment not shown, the water-retaining plate also has the aforementioned elongated portion 213 and slot 215. On the one hand, double-sided adhesive bonding is achieved through the elongated portion 213 and the main fixing region 211, thereby at least alleviating the problem of water-retaining plate peeling off due to external forces. On the other hand, the slot 215 at the main fixing region 211 ensures that even when subjected to external forces that tend to peel off the water-retaining plate 210, a portion of the water-retaining plate 210 remains fixed to the housing 110 of the electronic device 100.

[0068] It should be understood that all the above preferred embodiments are exemplary and not restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present invention should be within the legal protection scope of the present invention.

Claims

1. A water-blocking structure (200) for an electronic device (100), comprising a water-blocking plate (210), the water-blocking plate including a main fixing region (211) and a covering region (212), wherein, The main fixing region (211) is used to fix the device to a first surface of the housing (110) of the electronic device (100), and the covering region (212) extends from the main fixing region (211) along a first direction beyond the housing (110) of the electronic device, characterized in that, An elongated portion (213) is provided at the far end of the covered area (212) away from the main fixing area (211) along the first direction. The elongated portion has an additional fixing area and extends beyond the covered area (212) in the assembled state along a second direction opposite to the first direction, so as to be fixed to the second surface of the housing (110) opposite to the first surface by the additional fixing area. And / or, a seam (215) is provided at the main fixing region (211), the seam (215) extending along a third direction and partially cutting the main fixing region (211) along the third direction, wherein the third direction is at an angle to the first direction and the second direction.

2. The water-blocking structure (200) according to claim 1, characterized in that, The additional fixing area includes a first additional fixing area and a second additional fixing area, wherein the first additional fixing area is located at the free end of the elongated portion (213) and is used to fix it to the housing (110) of the electronic device, and the second additional fixing area overlaps with the covering area (212) and is used to fix it to the covering area (212).

3. The water-blocking structure (200) according to claim 1 or 2, characterized in that, A flexible transition section (214) is provided between the far end of the covered area (212) and the elongated portion (213). At the transition section, the water-blocking plate (210) can be folded around the folding axis so that the elongated portion extends beyond the covered area (212) in the second direction.

4. The water-blocking structure (200) according to claim 1, characterized in that, The water-blocking sheet (210) is cut from a transparent sheet. And / or, the seam (215) is a cut portion formed by cutting or a slot formed by blanking.

5. The water-blocking structure (200) according to claim 1 or 4, characterized in that, The seam (215) includes a section that extends gradually from its central position along a second direction towards both ends.

6. The water-blocking structure (200) according to claim 5, characterized in that, The seam (215) has a tear-resistant section (216) at its end, which extends gradually from the end of the seam along a first direction, or the tear-resistant section extends gradually from its middle position along a first direction to both ends.

7. The water-blocking structure (200) according to claim 5, characterized in that, The seam (215) is semi-circular or semi-elliptical.

8. The water-blocking structure (200) according to claim 1, characterized in that, The water-blocking plate (210) is glued to the housing (110) of the electronic device (100), wherein, in the main fixing area (211), adhesive layers are respectively provided on two parts located on both sides of the seam (215) in the third direction.

9. An electronic device (100), characterized in that, The electronic device includes: Shell (110); A circuit board assembly is provided in the housing (110); Electrical connector (120), which is electrically connected to the circuit board assembly; and According to any one of claims 1 to 8, the water-blocking structure (200) has a water-blocking plate (210) fixed to the housing (110) and covers the electrical connector (120) by means of the covering area (212) extending beyond the housing (110) in the first direction, so as to prevent water from flowing to the electrical connector.

10. The electronic device (100) according to claim 9, characterized in that, The electronic device is an electronic controller for automotive airbags.

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