Sealed structure

Abstract

The present invention provides a sealing structure, which includes: a main body component, which has a first surface and a second surface located on the opposite side of the first surface in the thickness direction; a first groove, which is arranged on the first surface; a second groove, which has the same shape and size as the first groove and is arranged on the second surface; a sealing member, which is arranged in the groove, and the sealing structure is characterized in that the groove includes a large-size portion, a small-size portion, and a connecting portion connecting the large-size portion and the small-size portion, and in the thickness direction, the first groove and the second groove partially overlap.

Description

Technical Field

[0001] The invention relates to a sealing structure, in particular to a double-sided sealing structure of a sheet-like workpiece. Background Art

[0002] In the prior art, the double-sided sealing structure for sealing on both sides of a sheet-like workpiece mainly includes the following two designs. Figure 1 In the sealing structure 300 shown, the two grooves located on the two surfaces of the sheet workpiece are located at the same position in the thickness direction of the workpiece, that is, the two grooves completely overlap in the thickness direction of the workpiece. Such a design has the following problems: the distance between the bottoms of the two grooves is small, the thickness of the workpiece at the grooves is too thin, resulting in poor overall strength of the sheet workpiece. Figure 2 In the sealing structure 400 shown, the two grooves located on the two surfaces of the sheet workpiece do not overlap in the thickness direction of the workpiece. Although such a design has little effect on the overall strength of the sheet workpiece, due to the different sizes of the sealing rings set in the grooves, the design has the following problems: different molds need to be used to manufacture sealing rings of different sizes, resulting in a complicated production process of the sealing structure, reduced production efficiency, and increased production costs.

[0003] In addition, in the above-mentioned prior art, the seal is easily dropped or turned over from the groove due to its own weight or pressure during installation, which leads to product sealing failure. In order to prevent the seal from dropping from the groove, a seal with an anti-drop structure can also be used, but such a seal is not only complex in structure, but also increases the difficulty of processing and installation. Summary of the invention (Problems to be solved by the invention)

[0004] In view of the above problems existing in the prior art, the present invention provides a sealing structure that can be manufactured through a simple production process and with high production efficiency, and the strength of the sealing structure is improved. (Solutions used to solve problems)

[0005] The present invention can be implemented through the following embodiments.

[0006] [1] A sealing structure, comprising: a main body component having a first surface and a second surface located on the opposite side of the first surface in the thickness direction; a first groove, which is arranged on the first surface; a second groove, which is the same groove as the first groove, that is, has the same shape and size as the first groove and is arranged on the second surface; a sealing member, which is respectively arranged in the first groove and the second groove, wherein the sealing structure is characterized in that the first groove and the second groove respectively include a large-size portion, a small-size portion, and a connecting portion connecting the large-size portion and the small-size portion, and in the thickness direction of the main body component, the first groove and the second groove partially overlap. [2] In the above sealing structure, in the thickness direction of the main body component, the center of the first groove and the center of the second groove can coincide with each other, and the partially overlapping portion is less than or equal to one quarter of the total length of the first groove or the second groove. [3] In the above sealing structure, the connection portion may include an inwardly curved portion on the large-size portion side and an outwardly curved portion on the small-size portion side. [4] In the above sealing structure, the inward curved portion and the outward curved portion may be formed into smooth curves, respectively. [5] In the above sealing structure, the connecting portion may further include an extending portion connecting the inward curved portion and the outward curved portion. [6] In the above sealing structure, the first groove and the second groove may respectively include at least two connecting parts, and the sealing member is a sealing ring. [7] In the above sealing structure, the first groove has two connecting parts, and the line connecting the centers (or midpoints) of the two connecting parts passes through the center of the first groove. [8] In the above sealing structure, the first groove has two connecting parts, and the line connecting the centers (or midpoints) of the two connecting parts does not pass through the center of the first groove. [9] In the above-mentioned sealing structure, the center of one of the two connecting parts of the first groove coincides with the center of one of the two connecting parts of the second groove in the thickness direction, and the center of the other of the two connecting parts of the first groove coincides with the center of the other of the two connecting parts of the second groove in the thickness direction, and the large-sized portion of the first groove and the small-sized portion of the second groove are located on one side of a plane extending along the thickness direction and passing through the centers of the two connecting parts of the first groove and the centers of the two connecting parts of the second groove and do not coincide with each other, and the small-sized portion of the first groove and the large-sized portion of the second groove are located on the other side of the plane and do not coincide with each other.

[10] In the above-mentioned sealing structure, in the thickness direction, the first groove and the second groove partially overlap twice to form a first overlapping part and a second overlapping part, and on the first surface, a line connecting the center of the first overlapping part of the first groove and the center of the second overlapping part passes through the center of the first groove, and on the second surface, a line connecting the center of the first overlapping part of the second groove and the center of the second overlapping part passes through the center of the second groove.

[11] In the above sealing structure, the main body component may have a reinforcing material or a reinforcing component at a portion where the first groove and the second groove overlap in the thickness direction to enhance the strength of this portion.

[0007] In the present invention, the main body part only needs to have a first surface and a second surface that are opposite to each other in the thickness direction, and there is no particular limitation on its shape. For example, it can be a sheet-like part or a thin sheet-like workpiece. The constituent material of the main body part is not particularly limited, for example, it can be composed of one or more materials such as plastic, resin, ceramic, metal, etc. At least one of the first surface and the second surface extends in a manner perpendicular to the thickness direction. The first surface and the second surface can be a plane or a non-plane.

[0008] In the present invention, the first groove and the second groove are the same grooves, and are sometimes collectively referred to as "grooves" when not distinguished. The cross-sectional shape of the groove in the thickness direction is not particularly limited as long as it can accommodate a sealing member such as a sealing ring and ensure a sealing effect. For example, the groove may be a U-shape including two side walls and a bottom.

[0009] In the present invention, when the groove is observed from the thickness direction of the main body part (i.e., the direction perpendicular to the surface), its shape is not particularly limited as long as it includes a large-size portion, a small-size portion, and a connecting portion, and can be appropriately selected according to the use environment of the sealing structure. Examples include closed grooves and non-closed grooves whose large and small-size portions are regular shapes or irregular shapes such as polygons, arcs, semicircles, etc. with the same shape but different sizes; examples also include closed grooves and non-closed grooves whose large and small-size portions are different shapes, such as grooves including a polygonal large-size portion and a semicircular small-size portion.

[0010] The groove may have one or more large-size parts and one or more small-size parts. It should be noted that the above-mentioned "size" refers to the average distance (size) between the points on the large-size parts and the small-size parts and the center (midpoint) of the groove. In the adjacent large-size parts and small-size parts connected by the connecting part, the average distance between each point in the large-size part and the center of the groove is greater than the average distance between each point in the small-size part and the center of the groove. The "average distance" mentioned here refers to the average value of the distance between each point and the center of the groove. Similarly, without distinguishing, the large-size and small-size parts and the connecting part of the first groove and the large-size and small-size parts and the connecting part of the second groove are sometimes collectively referred to as "large-size part", "small-size part" and "connecting part" respectively.

[0011] In the sealing structure of the present invention, the first groove and the second groove partially overlap in the thickness direction, in other words, the first groove and the second groove partially do not overlap in the thickness direction. This partial (non-)overlapping includes at least the following situations: the first groove and the second groove overlap only in the connection part in the thickness direction, that is, in the plan view of the sealing structure, the first groove and the second groove intersect only in the connection part, and the first groove and the second groove are completely staggered (non-overlapping) in the parts other than the connection part; only the small size part of the first groove overlaps with the small size part of the second groove; only the large size part of the first groove overlaps with the large size part of the second groove.

[0012] In the sealing structure of the present invention, the length of the partially overlapping portion of the first groove and the second groove in the thickness direction is less than or equal to one quarter of the total length of the groove. When more than two partially overlapping portions are included, the "length of the partially overlapping portion" is the total length of all overlapping portions. The length of the partially overlapping portion is preferably less than or equal to one sixth of the total length of the groove, and more preferably less than or equal to one eighth of the total length of the groove.

[0013] In the sealing structure of the present invention, the center of the first groove and the center of the second groove may or may not coincide with each other in the thickness direction of the main body part, and this can be selected as needed. In addition, the center of the first groove, the center of the second groove and the center of the main body part may or may not coincide with each other, and this can be selected according to the use environment of the sealing structure.

[0014] The material of the seal is not particularly limited, and it can be made of one or more materials such as rubber, resin, and silicone. The cross-sectional shape of the seal can be circular, square, polygonal, two-grid, D-shaped, X-shaped, or three-grid.

[0015] The above-mentioned "inward curvature" refers to curvature toward the center of the groove, and "outward curvature" refers to curvature toward the side opposite to the center of the groove. From the perspective of enhancing the sealing effect, the curved portion is preferably a smooth curved portion.

[0016] In the sealing structure of the present invention, the groove may include at least two connecting parts, and the connecting part may also include an extension part located between the inward curved part and the outward curved part, and the extension part may be a part extending along a straight line. On the surface of the main part, the two connecting parts may be in a mirror relationship, for example, mirror symmetry relative to a plane passing through the center of the groove and the midpoint of the line connecting the two connecting parts and perpendicular to the surface. The line connecting the centers (midpoints) of two of the at least two connecting parts may pass through the center of the groove or may not pass through the center of the groove.

[0017] The reinforcing material or reinforcing member used in the present invention is not particularly limited as long as it can enhance the strength of the main body member, and may be, for example, a metal reinforcing material or member, a rubber reinforcing material or member, or the like. (Effects of the Invention)

[0018] According to the present invention, since the grooves arranged on the first surface and the grooves arranged on the second surface have the same shape and size, that is, the two are the same grooves, the same seal can be used in the first groove and the second groove for sealing, thereby reducing the manufacturing molds of the seals, simplifying the manufacturing process of the sealing structure, thereby improving the efficiency of the manufacturing process and reducing the manufacturing cost.

[0019] According to the present invention, since the groove includes a connecting portion with a curved portion, the friction between the curved portion and the groove sidewall of the seal is increased, thereby reliably preventing the seal from falling off or turning over in the groove, thereby improving the sealing effect.

[0020] According to the present invention, since the first groove and the second groove do not completely overlap in the thickness direction, that is, only the first groove or the second groove exists at least partially in the thickness direction of the main part, the strength of the main part is improved compared with the situation in the prior art where the grooves completely overlap in the thickness direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram showing a sealing structure in the prior art. Figure 2 A schematic diagram showing another sealing structure in the prior art. Figure 3 A schematic diagram showing an embodiment of a sealing structure according to the present invention. Figure 4 Schematic representation Figure 3 An enlarged view of an overlapped portion of the seal structure is shown. Figure 5 Schematic representation Figure 3 A cross-sectional view of the sealing structure taken from AA to GG is shown. Figure 6 A schematic diagram showing another embodiment of the sealing structure of the present invention. Figure 7 Schematic representation Figure 6 A cross-sectional view of another sealing structure taken along line A'-A' to D'-D' is shown. Figure 8 A schematic diagram showing another embodiment of the sealing structure of the present invention. Description of Reference Numerals

[0022] 10, 10', 100, 300, 400 sealing structure; 11 main body; 102, 202 small size part; 103, 103', 203, 203' connecting part; 104, 204 large size part; T thickness direction; S10, S300, S400 first surface; S20, S300', S400' second surface; G groove; G10, G100, G300, G400 first groove; G20, G200, G300', G400' second groove; 12 sealing member (sealing ring); O overlapping part in thickness direction. DETAILED DESCRIPTION

[0023] In the following description, the side close to the center of the groove is called "inner side", the side away from the center of the groove is called "outer side", and the direction perpendicular to the groove surface is set as "thickness direction".

[0024] exist Figure 3In the sealing structure 10 shown, the circular hollow sheet-like workpiece as the main part 11 has a first surface S10 and a second surface S20 in the thickness direction, that is, in the direction perpendicular to the paper surface. The first surface S10 and the second surface S20 are opposite to each other in the thickness direction and extend perpendicular to the thickness direction. The first groove G10 is formed on the first surface S10, and the second groove G20 is formed on the second surface S20. The first groove G10 and the second groove G20 are the same grooves, having a U-shape including two side walls and a bottom, and the same size. The sealing ring 12 as a sealing member is respectively arranged in the groove. The first groove G10 is a closed annular groove, including a semicircular small-sized portion 102, a semicircular large-sized portion 104, and a connecting portion 103, 103' connecting the small-sized portion 102 and the large-sized portion 104. The radius of the large-sized portion 104 is greater than the radius of the small-sized portion 102. The second groove G20 includes a semicircular small-size portion 202, a semicircular large-size portion 204, and connecting portions 203, 203' connecting the small-size portion 202 and the large-size portion 204. In the sealing structure 10, the center of the first groove G10 and the center of the second groove G20 coincide in the thickness direction, and the first groove G10 and the second groove G20 are in a mirror-inverted relationship in the thickness direction. In addition, on the first surface, the line connecting the centers of the two connecting portions of the first groove G10 passes through the center of the first groove G10, that is, the first groove G10 is formed as follows: when the first groove G10 is divided into two parts by a plane parallel to the thickness direction and passing through the center of the first groove G10 and bisecting the semicircular circumference of the large-size portion 104 and the small-size portion 102, the two parts are in a mirror-symmetric relationship with respect to the plane. On the second surface, the two parts obtained by dividing the second groove G20 by the plane are also in a mirror-symmetric relationship with respect to the plane.

[0025] Next, based on Figures 3 to 5 The positional relationship between the first groove G10 and the second groove G20 in the thickness direction is further described.

[0026] like Figure 3 As shown in FIG. 1 , in the thickness direction, the first groove G10 and the second groove G20 only overlap at two connecting portions, and the first groove G10 and the second groove G20 outside the overlapping portion do not overlap in the thickness direction. Since the overlap of the two connecting portions is the same, Figure 4 Only an enlarged view of the overlapped portion of the connection portion 103 and the connection portion 203 is shown. Figure 4 As shown, the connection portion 103 includes an inward curved portion 103-1 and an outward curved portion 103-2, and the connection portion 203 includes an inward curved portion 203-1 and an outward curved portion 203-2. The connection portion 103 and the connection portion 203 intersect in the thickness direction to form an overlapping portion O.

[0027] Depend on Figure 5 It is known that in Figure 3 In the cross-sectional view at AA, the small-sized portion 102 of the first groove G10 is closer to the center of the groove than the large-sized portion 204 of the second groove G20, that is, located on the inner side; Figure 3 In the cross-sectional view at BB, the outer side wall of the first groove G10 overlaps with the inner side wall of the second groove G20 in the thickness direction T; Figure 3 In the cross-sectional view at CC, the inner sidewall of the second trench G20 is located between the two sidewalls of the first trench G10; Figure 3 In the cross-sectional view at DD, the two side walls of the first trench G10 overlap with the two side walls of the second trench G20, that is, the first trench G10 overlaps with the second trench G20 in the thickness direction; Figure 3 In the cross-sectional view at EE of FIG. 1 , the outer sidewall of the second trench G20 is located between the two sidewalls of the first trench G10; Figure 3 In the cross-sectional view at FF, the inner sidewall of the first groove G10 overlaps with the outer sidewall of the second groove G20 in the thickness direction; Figure 3 In the cross-sectional view at GG of FIG. 1 , the small-sized portion 202 of the second groove G20 is closer to the center of the groove than the large-sized portion 104 of the first groove G10 , that is, is located on the inner side.

[0028] In the sealing structure 10, since the first groove G10 and the second groove G20 are exactly the same, the sealing effect can be achieved by using only one sealing ring 12, thereby simplifying the manufacturing process of the sealing structure, improving the efficiency of the manufacturing process and reducing the production cost. Moreover, in the sealing structure 10, due to the formation of a smooth connection portion, the friction between the sealing ring at the connection portion and the side wall of the groove is increased, thereby reliably preventing the sealing ring from falling off or flipping from the groove, thereby improving the sealing effect. In addition, since the first groove G10 and the second groove G20 overlap only at the center of the connection portion, that is, the thickness of the main part 11 is thinner only at the center of the connection portion, and the thickness of other parts except the center of the connection portion is thicker, thereby improving the overall strength of the main part 11.

[0029] The following use Figure 6 , Figure 7 Another embodiment of the sealing structure of the present invention will be described.

[0030] exist Figure 6In the sealing structure 100 shown, except that the shapes of the main component and the groove are different from those of the sealing structure 10, the other structures are the same as those of the sealing structure 10. In the sealing structure 100, when the grooves are observed from above the surface of the main component (i.e., from the thickness direction), the first groove G100 and the second groove G200 are polygonal. Specifically, the groove includes a rectangular large-sized portion opening toward one side of the center of the groove, a rectangular small-sized portion opening toward one side of the center of the groove, and two connecting portions connecting the large-sized portion and the small-sized portion. The first groove G100 and the second groove G200 intersect at the smooth curved portions of the two connecting portions, respectively, to form an overlapping portion in the thickness direction. The first groove G100 and the second groove G200 outside the overlapping portion do not overlap.

[0031] like Figure 7 It can be seen from the cross-sectional view that in the A'-A' cross-sectional view, the small-sized portion of the first groove G100 is located on the inner side of the large-sized portion of the second groove G200, and the first groove G100 and the second groove G200 do not overlap in the thickness direction; in the B'-B' cross-sectional view, the outer side wall of the first groove G100 and the inner side wall of the second groove G200 overlap; in the C'-C' cross-sectional view, the two side walls of the first groove G100 overlap with the two side walls of the second groove G200 respectively; in the D'-D' cross-sectional view, the inner side wall of the first groove G100 overlaps with the outer side wall of the second groove G200 in the thickness direction.

[0032] In the sealing structure 100, since the first groove G100 and the second groove G200 are exactly the same, the sealing effect can be achieved by using only one sealing ring, thereby simplifying the manufacturing process of the sealing structure, improving the efficiency of the manufacturing process, and reducing the production cost. Moreover, in the sealing structure 100, due to the formation of a smooth connection portion, the friction force of the sealing ring between the connection portion and the groove side wall is increased, thereby reliably preventing the sealing ring from falling off or turning over from the groove, thereby improving the sealing effect. In addition, since the first groove G100 and the second groove G200 overlap only at the center of the connection portion, that is, the thickness of the main body component is thinner only at the center of the connection portion, and the thickness of other parts except the center of the connection portion is thicker, thereby improving the overall strength of the main body component.

[0033] The following use Figure 8 Other modified examples of the sealing structure of the present invention will be described.

[0034] exist Figure 8In the sealing structure 10' shown, except that the shape of the groove in the plan view and the overlapping part of the two grooves in the thickness direction are different from the sealing structure 10, the other structures are the same as the sealing structure 10. In the sealing structure 10', the groove includes an arc-shaped large-size portion, an arc-shaped small-size portion and a smooth connecting portion. In the sealing structure 10', the large-size portion of the first groove G10' overlaps with the large-size portion of the second groove G20' in the thickness direction at two locations to form two overlapping areas, and the total circumference of the overlapping area is less than one-fourth of the total circumference of the groove. In addition, in the sealing structure 10', in the thickness direction, the first groove G10' and the second groove G20' do not overlap in the small-size portion.

[0035] In the sealing structure 10', since the first groove G10' and the second groove G20' are exactly the same, the sealing effect can be achieved by using only one sealing ring, thereby simplifying the manufacturing process of the sealing structure, improving the efficiency of the manufacturing process, and reducing the production cost. Moreover, in the sealing structure 10', since a smooth connection portion is formed, the friction between the sealing ring and the groove side wall is increased, thereby reliably preventing the sealing ring from falling off or turning over in the groove, thereby improving the sealing effect. In addition, since the first groove G10' and the second groove G20' only partially overlap in the large-size portion, the overall strength of the main body component is improved compared with existing products.

[0036] In the plan view of the above-mentioned sealing structure 10', the center line of the two connecting parts of the first groove does not pass through the center of the first groove, that is, the angle formed by the two ends of the large-size part of the groove and the center of the groove is different from the angle formed by the two ends of the small-size part and the center of the groove. In the sealing structure 10', the arc angle of the large-size part is greater than the arc angle of the small-size part, but it can be the opposite, that is, the arc angle of the small-size part is greater than the arc angle of the large-size part. The size of the overlapping area can be determined according to the strength requirements of the main body component, and then the angle formed by the two ends of the large and small-size parts and the center of the groove can be determined. In addition, instead of the arc-shaped groove in the sealing structure 10', a polygonal groove can also be used.

[0037] It should be noted that in the above-mentioned embodiment, the large and small size portions have the same shape, that is, they are both round or square. However, according to the requirements of the use environment of the sealing structure, the large and small size portions may have different shapes, for example, a combination of an arc-shaped large size portion and a square small size portion, or a combination of a square large size portion and an arc-shaped small size portion, etc. Industrial Applicability

[0038] As described above, the present invention can provide a sealing structure which is manufactured by a simple production process and high production efficiency and has improved strength. The sealing structure can be arranged between the electrode plate and the diaphragm in the electrolytic cell, for example, to achieve a good sealing effect.

Claims

1. A sealing structure, comprising: a main body member having a first surface and a second surface located on the opposite side of the first surface in a thickness direction; a first groove disposed on the first surface; a second groove having the same shape and size as the first groove and disposed on the second surface; sealing members, which are respectively disposed in the first groove and the second groove, The sealing structure is characterized in that: The first groove and the second groove respectively include a large-size portion, a small-size portion, and a connecting portion connecting the large-size portion and the small-size portion. In the thickness direction of the main body component, the first groove and the second groove partially overlap.

2. The sealing structure according to claim 1, wherein: In the thickness direction of the main body component, the center of the first groove coincides with the center of the second groove, and the partially overlapping portion is less than or equal to one quarter of the total length of the first groove or the second groove.

3. The sealing structure according to claim 1 or 2, wherein: The connecting portion includes an inwardly curved portion on a side of the large-size portion and an outwardly curved portion on a side of the small-size portion.

4. The sealing structure according to claim 3, wherein: The inwardly curved portion and the outwardly curved portion are respectively smooth curves.

5. The sealing structure according to claim 3 or 4, wherein: The connecting portion further includes an extending portion connecting the inward bending portion and the outward bending portion.

6. The sealing structure according to any one of claims 1 to 5, wherein: The groove includes at least two connecting parts, and the sealing member is a sealing ring.

7. The sealing structure according to claim 6, wherein: The first groove has two connecting portions, and a center line connecting the two connecting portions passes through the center of the first groove.

8. The sealing structure according to claim 6, wherein: The first groove has two connecting portions, and a center line connecting the two connecting portions does not pass through the center of the first groove.

9. The sealing structure according to any one of claims 6 to 8, wherein: In the thickness direction, the center of one of the two connecting parts of the first groove coincides with the center of one of the two connecting parts of the second groove, the center of the other of the two connecting parts of the first groove coincides with the center of the other of the two connecting parts of the second groove, and the large-sized part of the first groove and the small-sized part of the second groove are located on one side of a plane extending along the thickness direction and passing through the centers of the two connecting parts of the first groove and the centers of the two connecting parts of the second groove, and the small-sized part of the first groove and the large-sized part of the second groove are located on the other side of the plane.

10. The sealing structure according to claim 8, wherein: In the thickness direction, the first groove and the second groove partially overlap twice to form a first overlapping portion and a second overlapping portion, and, on the first surface, a line connecting the center of the first overlapping portion and the center of the second overlapping portion of the first groove passes through the center of the first groove, and on the second surface, a line connecting the center of the first overlapping portion and the center of the second overlapping portion of the second groove passes through the center of the second groove.

11. The sealing structure according to any one of claims 1 to 10, wherein: The body member has a reinforcing material or a reinforcing member at a position where the first groove and the second groove overlap in the thickness direction.

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