CN217363547U - Sealing structure and device comprising same - Google Patents

Abstract

The utility model relates to a sealing technique and seal structure field, concretely relates to seal structure and contain device of this seal structure, include: the sealing gasket and a pressing part matched with the sealing gasket for use; the pressing piece comprises a first pressing piece and a second pressing piece; the sealing gasket is arranged between the first pressing piece and the second pressing piece; the first pressing piece and the second pressing piece are respectively provided with a first groove and a bulge which can be in concave-convex fit; first recess or bellied positive pressure face is equipped with the second recess, the utility model discloses can reduce sealed pad deformation evagination or the possibility of moving outward, reduce because of sealed pad deformation evagination or the degree of the deformation that leads to the casing that moves outward, thereby make sealed pad deformation state with first pressfitting piece with the cooperation degree of second pressfitting piece is higher, changes to fill full first pressfitting piece with the clearance of second pressfitting piece can strengthen sealing performance.

Description

Sealing structure and device comprising same

Technical Field

The utility model relates to a sealing technique or seal structure field, especially a seal structure and contain this seal structure's device.

Background

More and more electronic devices require a casing to protect internal electronic components by preventing water and dust, the international universal protection grade is represented by an IP grade, and generally outdoor electronic products require protection grades of IP 65-IP 68. Protection means for these electronic products with higher requirements are generally as follows: the sealing device comprises the following components of sealing glue filling, three-proofing paint spraying, soft and hard glue double-color injection molding, welding and ultrasonic wave, but for the convenience of dismounting and mounting of the machine shell, a silicon rubber sealing gasket is usually used for filling a gap between the machine shells to realize sealing and water proofing.

Traditional seal structure sets up sealed the pad usually between two casings, close and extrude sealed the pad between two casings through the casing lid, make sealed pad deformation and compression, fill in casing lid closed face clearance, realize sealed and waterproof, but, in-process at casing lid merger extrusion seal pad, traditional seal structure's sealed pad closes the face degree of adaptability not high with the lid of casing, the sealing pad is extruded and easy evagination or side direction move outward, make the casing lid closed the face sealed pad deformation fill more one side reaction in the casing, make the casing deformation and the clearance too big, or the sealed pad fills the clearance of the casing lid closed face of less one side too big, lead to the casing lid closed face leakproofness not high, the waterproof function has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the sealing structure aims at the problems that the sealing performance is reduced and water leakage or waterproof function is reduced due to the fact that the sealing gasket is extruded to be prone to protruding outwards or moving outwards laterally due to the fact that the degree of matching between the sealing gasket and the extrusion surface of the sealing position is not enough in the existing sealing structure, and an overlarge gap exists between the cover surface of the machine shell. The sealing structure and the device comprising the sealing structure can reduce the degree of outward protrusion or lateral outward movement of the sealing gasket, the matching degree of the sealing gasket and the cover surface of the shell is higher in the extrusion process, and the sealing performance can be enhanced to enhance the waterproof effect.

In order to realize the purpose, the utility model discloses a technical scheme be: a sealing structure, comprising: the sealing gasket and the pressing piece matched with the sealing gasket are used; the pressing piece comprises a first pressing piece and a second pressing piece; the sealing gasket is arranged between the first pressing piece and the second pressing piece; the first pressing piece and the second pressing piece are respectively provided with a first groove and a bulge which can be in concave-convex fit; and a second groove is arranged on the positive pressure surface of the first groove or the bulge.

The sealing gasket is positioned between two pressing parts, the surface of the pressing part, which is vertical to the acting force of the compression sealing gasket, is a positive pressure surface, the traditional sealing structure with the sealing gasket is easy to cause the sealing gasket to protrude outwards or move outwards relative to the positive pressure surface in the process of compressing the sealing gasket by the pressing part, so that the sealing performance is reduced, the scheme is that the sealing gasket is provided with a first pressing part and a second pressing part which can be in concave-convex fit and press-fit with the sealing gasket, the sealing gasket is arranged in the first groove, the second groove is arranged on the first groove or the raised positive pressure surface, the first groove and the raised positive pressure surface are vertical to the surface for compressing the acting force of the sealing gasket, the sealing gasket is positively compressed by the first groove and the protrusion in the process of being compressed and can deform towards the second groove without protruding outwards, and the sealing gasket is laterally limited by the side surface of the first groove and the side surface of the protrusion in the process of being compressed, and the part that sealed pad deformation moved outward can be filled first recess lateral part with the clearance of protruding lateral part, the unable deformation of pad or deformation pressure are too big leads to the casing to warp, make sealed pad can fill more easily first pressfitting spare with the second pressfitting spare to reinforcing sealing performance, sealed effect is better.

As a preferable mode of the present invention, the groove depth of the second groove gradually increases from both sides to the middle. According to the preferable scheme, the groove depth of the second groove is gradually increased from two sides to the middle, so that the sealing gasket can deform along with the shape of the groove surface of the second groove in the extrusion process, the extrusion force applied to the sealing gasket is perpendicular to the groove surface of the second groove, according to stress analysis, the groove depth of the second groove is gradually increased from two sides to the middle, the resultant force extruded by the concave surface of the second groove applied to the sealing gasket tends to the middle, the reaction force applied to the second groove by the sealing gasket tends to the middle of the second groove, the deformation degree of the first pressing piece and the deformation degree of the second pressing piece due to the reaction force applied to the sealing gasket are further reduced, the gap between the pressing surfaces of the pressing sealing gasket is further reduced, the sealing effect is further enhanced, and the waterproof effect is improved.

As a preferable aspect of the present invention, the second groove is provided in the middle of the first groove or the convex positive pressure surface. This preferred scheme, through inciting somebody to action the second recess is located the intermediate position of first recess normal pressure face, perhaps will the second recess is located the intermediate position of protruding normal pressure face makes sealed the pad is followed by the extrusion in-process the second recess warp more tend to first recess or bellied intermediate position makes the holding power of second recess more tends to the intermediate position, can further reduce sealed pad takes place the degree that lateral sliding takes place because of the atress is partial to, and then has further reduced sealed pad causes the too big condition in pressfitting face clearance to appear because of sliding to further improve sealing performance.

As a preferable scheme of the present scheme, the outer edge of the sealing gasket includes a curved surface and a flat surface, and one side of the curved surface of the sealing gasket faces the second groove. According to the preferred scheme, one side of the curved surface of the sealing gasket faces the second groove, and one surface, deformed and slid into the second groove, of the sealing gasket is a curved surface, namely the curved surface protrudes into the second groove, so that the sealing gasket can be deformed into the second groove or deformed into the second groove more easily in the extrusion process, the deformation amount of the sealing gasket is larger, the outward protruding tendency of the sealing gasket is further reduced, and the sealing performance is further improved.

As the preferable scheme of the scheme, the sealing gasket is a silica gel sealing gasket. This preferred scheme is through inciting somebody to action sealed pad sets up to the sealed pad of silica gel, and the sealed pad of silica gel is sealed to be more suitable cooperation on elastic deformation performance and abrasion resistance first pressfitting piece with the extrusion formula of second pressfitting piece is sealed to be used to further promote sealing performance and increase of service life.

In a preferred embodiment of the present invention, the hardness of the press-fit member is greater than the hardness of the seal gasket. In the preferred scheme, the hardness of the pressing piece is set to be greater than that of the sealing gasket, and the two pressing pieces can be mutually meshed to enable the softer deformation degree of the sealing gasket to be greater than that of the pressing piece, so that the sealing gasket is easier to deform and is filled in gaps between the pressing pieces, and the sealing performance is further improved.

As a preferable scheme of the scheme, a guide surface is arranged on one side of the protrusion. This preferred scheme, through with two limit chamfers of protruding one side of protruding institute form the spigot surface the sealing gasket by the extruded in-process, the spigot surface of protruding one side can reduce the pressure to sealed the pad, reduces the degree that the sealing gasket was extruded and damaged, and for the deformation of sealing gasket provides the direction deformation can be more even on the protruding spigot surface deformation, avoids the sealing gasket is by the pressure damage in the time, has still further reduced because of the inhomogeneous degree that causes the evagination of sealing gasket deformation, and then has further strengthened sealing performance.

As a preferred scheme of the scheme, two edges of the inner side of the first groove, which are connected with the pressing piece, are chamfered. The middle part of a pressing surface of the concave-convex matched first groove and the protrusion is filled with the sealing gasket, the outer sides of the pressing surfaces are mutually attached to realize pressing, the inner side of the first groove connected with the pressing piece is smoother through chamfering of two edges of the inner side of the first groove connected with the pressing piece, the damage to the two edges of the inner side of the first groove in the pressing process of the first pressing piece and the second pressing piece is reduced, and the service life of the structure can be prolonged.

The utility model also provides a device containing the sealing structure, which comprises two shells; the first pressing piece and the second pressing piece are respectively arranged on the two shells; the two shells are covered and sealed through the first pressing piece and the pressing piece. First pressfitting spare with second pressfitting spare passes through the pressfitting sealed pad realization is sealed, this preferred scheme through inciting somebody to action first pressfitting spare with second pressfitting spare sets up respectively in two casings that each other covers closed, makes first pressfitting spare second pressfitting spare and sealed pad formation along the lid of casing closes and seals up to casing wholeness, and the casing that the lid closed can realize the pressfitting through the lid first pressfitting spare with the second pressfitting spare contains first pressfitting spare with can place in the device of second pressfitting spare and treat sealed article, it is more convenient to use.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. for the sealing gasket of traditional seal structure can only be in the outside protrusion of positive pressure face after receiving the extrusion, through having set up can unsmooth cooperation and pressfitting sealed first pressfitting spare and the second pressfitting spare of filling up, sealed the pad is located in the first recess, and first recess or the second recess is established to bellied positive pressure face, make sealed pad receive by extrusion in-process first recess with protruding forward extrusion can to deformation in the first recess and can not evaginate, and, the sealing gasket is also received by extrusion in-process the side of first recess with bellied side is spacing jointly, thereby can avoid sealed pad deformation evagination leads to the casing to warp, thereby makes sealed pad fill more easily full the clearance of first pressfitting spare with the second pressfitting spare, has strengthened sealing performance.

2. Preferably, the depth of the second groove is gradually increased from two sides to the middle, the second groove is arranged in the middle of the first groove or the convex positive pressure surface, so that the deformation of the sealing gasket can follow the shape deformation of the second groove, and the larger the space of the sealing gasket can be filled at the position, which is closer to the middle, of the second groove, so that the reaction force of the sealing gasket on the second groove can be more approximate to the middle of the second groove, the gap of the pressing surface of the pressing sealing gasket is further reduced, the sealing effect is further enhanced, and the waterproof effect is improved.

3. The device comprising the sealing structure enables the first pressing piece and the second pressing piece to be covered and closed by the two shells of the device in the sealing process of the matched sealing gasket, so that the device not only can improve the sealing performance, but also is convenient to use and seal objects.

Drawings

Fig. 1 is a partial schematic view of an apparatus of the present invention including a sealing structure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partial schematic view a of the unsealed state of the sealing structure of the present invention;

fig. 4 is a partial schematic view b of the sealing structure of the present invention in an unsealed state;

icon: 0-shell; 1-a sealing gasket; 2-pressing the parts; 21-a first press part; 211 — a first recess; 212-a second groove; 22-a second press part; 221-projection.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1 and fig. 2, the utility model provides a sealing structure, include: a sealing gasket 1 and a pressing part 2 matched with the sealing gasket 1; the pressing piece 2 comprises a first pressing piece 21 and a second pressing piece 22; the sealing gasket 1 is arranged between the first pressing part 21 and the second pressing part 22; the first pressing piece 21 and the second pressing piece 22 are respectively provided with a first groove 211 and a protrusion 221 which can be in concave-convex fit; the positive pressure surface of the first groove 211 or the protrusion 221 is provided with a second groove 212.

It should be noted that the first concave groove 211 and the convex protrusion 221, which are respectively disposed on the first closing member 21 and the second closing member 22 and are in concave-convex fit, are understood as follows: by arranging the first groove 211 on the first pressing member 21 and arranging the protrusion 221 on the second pressing member 22, or arranging the protrusion on the first pressing member 21 and arranging the first groove 211 on the second pressing member 22, the protrusion 211 is pressed in the first groove 211, so as to realize a concave-convex fit, which is limited to the relative position of the first groove 211 and the protrusion 221, but not limited to the specific position of the first groove 211 and the protrusion 221 on the first pressing member 21 and the second pressing member 22.

It should be noted that, the first groove 211 or the positive pressure surface of the protrusion 221 is provided with a second groove 212, and it may be preferable that, as shown in fig. 3, the second groove 212 is provided on the positive pressure surface of the protrusion 221. The "positive pressure surface" is understood to be a surface perpendicular to the force applied by the first engaging member 21 and the second engaging member 22 with respect to the non-engaging side surface of the first engaging member 21 and the second engaging member 22, and is preferably a cross section along the thickness direction of the first engaging member 21 and the second engaging member 22 as shown in fig. 3.

This embodiment seal structure, first pressfitting piece 21 with second pressfitting piece 22 mutually supports and has sealed effect, first pressfitting piece 21 with second pressfitting piece 22 can be the encapsulation and treat that the lid of the casing 0 of sealed object closes a part of face, also can be through integrated into one piece or bonding mode and the sealed casing 0 of treating sealed face is connected, the utility model discloses the preferred extrudees through improving first pressfitting piece 21 and second pressfitting piece 22 the structure of the pressfitting department of sealed pad 1 cooperates sealed pad 1 uses, realizes promoting sealing performance with sealed pad 3 can better cooperation.

It should be noted that the positions of the first closing member 1 and the second closing member 2 are not distinguished from each other in specific orientations, and are understood as corresponding positional relationships in cooperation with each other.

It should be noted that, in the present invention, the first groove 211 and the protrusion 221 can be formed on the first pressing piece 21 or the second pressing piece 22 by grooving and cutting, and the second groove 212 can be formed on the protrusion 22; in this embodiment, the second groove 212 may preferably start to have a groove depth gradually increasing from two sides to the middle, for example, a V-shaped groove is preferably formed opposite to the concave surface of the first groove 211, the "opposite" is that by providing the first closing member 21 and the second closing member 22 with the same thickness, the formed protrusion 221 can be accommodated in the first groove 211 by setting the size, so that the protrusion 221 and the first groove 211 are in concave-convex fit, and preferably, as shown in fig. 3, the V-shaped opening of the V-shaped groove faces the first groove 211, so that the V-shaped groove is opposite to the first groove 211.

It should also be noted that the gasket 1 is a gasket 1 which is conventionally used, and here, a sealing ring, which may be an O-ring or a square sealing ring, is preferably used, and the gasket 1 has elasticity and can elastically deform.

In this embodiment, the V-shaped second groove 212 is preferably disposed in the middle of the positive pressure surface of the first groove 211 or the protrusion 221, and it is understood that the V-shaped second groove 212 may be disposed in the middle of the first groove 211 or the protrusion 221. With reference to fig. 3, said intermediate position is understood as: at an intermediate position along the positive pressure surface of the first recess 211 or the protrusion 221.

In the sealing structure of this embodiment, the outer edge of the sealing gasket 1 includes a curved surface and a flat surface, and one side of the curved surface of the sealing gasket 1 faces the second groove 212. Specifically, as shown in fig. 3, one surface of the gasket 1 facing the protrusion 221 is a flat surface, and one side facing the second groove 212 is a curved surface protruding toward the second groove 212.

This embodiment is preferred, with the width of protruding 221 sets up to be equivalent with the width of first recess 211, realizes under the unsmooth complex condition, makes protruding 221 holds in first recess 211, and with there is certain clearance in the inner wall of first recess 211 sealed fill 1 by the extruded portion fill in the second recess 212, partial deformation is filled in addition the side of first recess 211 with the clearance of protruding 22 lateral surface, thereby further avoid because sealed 1 can not extrude completely appear the condition that the extrusion excessively leads to casing 0 to warp in first recess 12, thereby further reduced casing 0 lid clearance of closing the face, improved sealing performance and water-proof effects.

In this embodiment, it is also preferable that the protruding side of the protrusion 221 is provided with a guide surface. The guide surface can be formed by chamfering both edges of the protrusion 221 on the side protruding therefrom. The chamfering is implemented by chamfering two edges of the first groove 211 connected with the protrusion 221 through a conventional technical means, a guide surface is formed at the position where the chamfered first groove 211 is connected with the protrusion 221, the guide surface acts on the gasket deformed by extrusion, and the pressure of the gasket 1 under extrusion is reduced compared with that of the edge acting on the gasket, so that the damage of the protrusion and the second groove to the gasket due to extrusion is reduced, and the service life is prolonged.

Sealing structure, it is preferred as shown in fig. 3, will second recess 212 is located first recess 211 or the centre of protruding 221 positive pressure face, further can be preferred, will protruding 221 is located the middle part of second pressfitting piece 22, can also preferably set up protruding 221's size, protruding 221's width is greater than the third of second pressfitting piece 22 width. Because protruding 221 unsmooth cooperation holds the entering the in-process of first recess 211, through setting up protruding 221's width is greater than the one-third of second pressfitting 22 width, and is located the middle part of second pressfitting 22 makes the outside positive pressure face of first recess 21 recess supports the both sides lifting surface area of second pressfitting 22 is balanced and moderate, thereby reduces second pressfitting 22 with the degree of pressfitting face deviation or difficult centering in the pressfitting process of first pressfitting 21, further reduces because of the sealed possibility of 1 off normal that fills up that leads to of the pressfitting face dislocation of first pressfitting 21 and second pressfitting 22, thereby improves sealing performance.

Seal structure, preferred, the hardness of pressfitting piece 2 is greater than the hardness of sealed pad 1. It should be noted that the pressing member 2 includes the first pressing member 21 and the second pressing member 22, the first groove 211 can be provided on the first pressing member 21 and also can be provided on the second pressing member 22, and here, as shown in fig. 3, it is preferable that the first groove 211 is provided on the first pressing member 21, so that the hardness of the first pressing member 21 is set to be greater than the hardness of the sealing gasket 1, and the hardness of the second pressing member 22 is set to be greater than the hardness of the density gasket 1, that is, the hardness of the pressing member 2 is greater than the hardness of the sealing gasket.

Seal structure, preferred will first recess 211 inboard with two limit chamfers that the piece 2 meets are closed to the pressfitting. The chamfer is realized by a conventional machining chamfer mode, and in the pressing process of the first pressing part 21 and the second pressing part 22, the inner side of the first groove 211 and two edge chamfers connected with the pressing part 2 can reduce the damage to edges in the pressing process, so that the service life of the structure is prolonged.

The sealing structure of the present invention, as shown in fig. 1, is preferred that the first pressing member 21 and the second pressing member 22 are respectively disposed on two mutually covered casings 0. The first pressing piece 21 and the second pressing piece 22 are respectively arranged on two mutually covered shells 0, the pressing mode of the first pressing piece 21 and the second pressing piece 22 is realized by mutually covering two shells 0 and pressing the sealing gasket 1, and the first pressing piece 21 and the second pressing piece 22 are continuously arranged along the covering surfaces of the two mutually covered shells 0, namely the sealing gasket 1 is arranged along the covering surface of the shell, as shown in figure 1, the first pressing piece 21 and the second pressing piece 22 are arranged in one circle of the shell 0, the integral sealing of the shell 0 is realized under the condition that the opening and the covering of the two mutually covered shells 0 are not influenced, the use is convenient, and the sealing and waterproof effects are further improved.

Example 2

On the basis of embodiment 1, in this embodiment, the first pressing member 21 and the second pressing member 22 are provided with a first groove 211 and a protrusion 221 which are in concave-convex fit, the protrusion 221 may be provided on the first pressing member 21, and the first groove 211 may be provided on the second pressing member 22; it is also possible to provide the first groove 211 on the first engaging member 21 and the protrusion 221 on the second engaging member 22. As described in the above embodiment 1, the second groove 212 can be provided on the first groove 211, and in this embodiment, as shown in fig. 4, it is preferable that a protrusion 221 is provided on the second pressing member 22, and the second groove 212 is provided on the positive pressure surface of the first groove 211.

In this embodiment, the second groove 212 is disposed on the positive pressure surface of the first groove 211, and during the pressing process, the protrusion 221 can be in concave-convex fit with the first groove 211 to move into the first groove 211, the sealing gasket 1 is pressed by the protrusion 221 to be filled into the second groove 212, so that the sliding or outward movement of the sealing gasket due to too fast deformation or excessive deformation can be reduced, and the sealing effect of the sealing structure can be improved.

Example 3

The present invention provides a device comprising a sealing structure based on embodiment 1 or 2, as shown in fig. 1, the device comprising a sealing structure as described in embodiment 1 or 2, the device comprising two housings 0; the first pressing piece 21 and the second pressing piece 22 are respectively arranged on the two shells 0; the two housings 0 are sealed by the first closing part 21 and the closing part 22.

For easy identification, fig. 1 shows only a cross-sectional view of the housing 0, in the device, an object to be sealed is placed in the housing 0, two of the housings 0 are closed to enable the first pressing piece 21 and the second pressing piece 22 which are in concave-convex fit to press the sealing gasket 1, and two of the housings 0 are closed to enable the sealing gasket 1 to press and match the first pressing piece 21 and the second pressing piece 22 to realize sealing, the sealing by the closing of the housing 0 is a device frequently used in sealing, and can be opened and closed, and can be used in an object which needs temporary sealing or long-term sealing, for example, in the sealing of an electronic and electrical object which needs high sealing and water proofing, the utility model can improve the sealing performance by matching with the closing, thereby facilitating the use and the installation, and further comprises a sealing structure as described in embodiment 1 or 2, the sealing performance is improved, and the waterproof performance is enhanced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (9)

1. A sealing structure, comprising: a sealing gasket (1) and a pressing part (2) matched with the sealing gasket (1) for use; characterized in that the press (2) comprises a first press (21) and a second press (22); the sealing gasket (1) is arranged between the first pressing piece (21) and the second pressing piece (22); the first pressing piece (21) and the second pressing piece (22) are respectively provided with a first groove (211) and a protrusion (221) which can be in concave-convex fit; the positive pressure surface of the first groove (211) or the bulge (221) is provided with a second groove (212).

2. The seal structure of claim 1, characterized in that the groove depth of the second groove (212) gradually increases from both sides to the middle.

3. The sealing structure according to claim 2, wherein the second groove (212) is provided in the middle of the positive pressure surface of the first groove (211) or the projection (221).

4. The sealing structure according to claim 1, characterized in that the outer edge of the gasket (1) comprises a curved surface and a flat surface, the curved surface side of the gasket (1) being arranged towards the second groove (212).

5. The sealing structure according to claim 1, characterized in that the gasket (1) is a silicone gasket.

6. The sealing structure according to claim 1, characterized in that the hardness of the press element (2) is greater than the hardness of the sealing gasket (1).

7. The sealing structure according to claim 1, characterized in that the side of the projection (221) that projects is provided with a guide surface.

8. The sealing structure according to claim 1, characterized in that two edges inside the first groove (211) bordering on the closing part (2) are chamfered.

9. A device comprising a sealing structure, characterized in that it comprises a sealing structure according to any one of claims 1-8, said device comprising two housings (0); the first pressing piece (21) and the second pressing piece (22) are respectively arranged on the two shells (0); the two shells (0) are covered and sealed by the first pressing piece (21) and the pressing piece (22).

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