CN215956778U

CN215956778U - Sealing structure

Info

Publication number: CN215956778U
Application number: CN202121081000.0U
Authority: CN
Inventors: 张俊
Original assignee: Shenzhen Inovance Technology Co Ltd
Current assignee: Shenzhen Inovance Technology Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-03-04
Anticipated expiration: 2031-05-19

Abstract

The utility model provides a sealing structure which comprises a first shell and a second shell, wherein a first sealing part is arranged on the surface of the first shell facing the second shell, the first sealing part comprises a first sealing surface and a second sealing surface, and a sealing groove is formed between the first sealing surface and the second sealing surface; the surface of the second shell facing the first shell is provided with a second sealing part, the second sealing part comprises a third sealing surface and a fourth sealing surface, and a first convex rib is formed between the third sealing surface and the fourth sealing surface; when the first shell and the second shell are assembled together, the first convex rib is embedded into the sealing groove, the third sealing surface is tightly attached to the first sealing surface, and the fourth sealing surface is tightly attached to the second sealing surface, so that an assembly gap between the first shell and the second shell is sealed. The utility model can form three-level protection, has simple structure and easy processing, reduces the material cost, improves the market competitiveness, reduces the types of assembling materials, simplifies the structural design and reduces the disassembly and assembly difficulty.

Description

Sealing structure

Technical Field

The embodiment of the utility model relates to the technical field of mechanical sealing, in particular to a sealing structure.

Background

Sealing is a component or measure that prevents fluid or solid particles from leaking between adjacent bonding surfaces and prevents foreign materials (e.g., dust, moisture, etc.) from entering the interior of the mechanical device.

In the existing mechanical equipment, the casing of the mechanical equipment usually includes a plurality of shells assembled together in a detachable manner, which facilitates maintenance operations on the parts inside the casing and simultaneously seals and protects the parts. Currently, to achieve the sealing effect of the protection class IPX1-IPX5, the cabinet generally needs to have a sealing member (e.g. sealing glue, sealing ring, etc.) between the shells to seal the gap between the shells.

However, the existing mechanical equipment adopts a mode of setting a sealing component to improve the protection grade, so that the material cost is increased, the types of assembling materials are increased, the structure is complicated, the disassembly and assembly difficulty is greatly increased, and the maintenance efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a sealing structure aiming at the problems that the existing mechanical equipment provided with a sealing component for improving the protection level has high material cost, multiple assembling material types, complex structure, high disassembling and assembling operation difficulty and influenced maintenance efficiency.

In order to solve the above technical problem, an embodiment of the present invention provides a sealing structure, including a first housing and a second housing that are detachably assembled together, where the first housing is provided with a first sealing portion on a surface facing the second housing, the first sealing portion includes a first sealing surface and a second sealing surface that are distributed at an interval, and a sealing groove is formed between the first sealing surface and the second sealing surface;

the second sealing part is arranged on the surface of the second shell facing the first shell and comprises a third sealing surface matched with the first sealing surface and a fourth sealing surface matched with the second sealing surface, and a first convex rib is formed between the third sealing surface and the fourth sealing surface; when the first shell and the second shell are assembled together, the first convex rib is embedded into the sealing groove, the third sealing surface is tightly attached to the first sealing surface, and the fourth sealing surface is tightly attached to the second sealing surface, so that an assembly gap between the first shell and the second shell is sealed.

Preferably, the second housing is fitted over the first housing, the first sealing surface is located outside the second sealing surface, and the first sealing surface is lower than the second sealing surface.

Preferably, when the first housing and the second housing are assembled together, gaps are respectively provided between the side wall of the first rib and the groove wall of the seal groove, and between the top surface of the first rib and the bottom wall of the seal groove.

Preferably, the first housing includes a plurality of drain holes, the sealing groove is communicated with the outside of the first housing through the drain holes, and one end of the drain hole communicated with the sealing groove is higher than one end of the drain hole communicated with the outside of the first housing.

Preferably, the distance from the first sealing surface to the bottom wall of the sealing groove is less than or equal to two thirds of the distance from the second sealing surface to the bottom wall of the sealing groove.

Preferably, the first sealing surface, the second sealing surface and the bottom wall of the sealing groove are parallel to the joint surface of the first shell and the second shell;

or the bottom wall of the sealing groove is parallel to the joint surface, the first sealing surface is inclined downwards in the direction away from the sealing groove, and the second sealing surface is inclined downwards in the direction towards the sealing groove.

Preferably, chamfers are respectively arranged between the second sealing surface and the inner wall of the sealing groove.

Preferably, the first sealing portion includes a second bead and a third bead protruding toward the second housing, the second bead is located outside the sealing groove, the third bead is located inside the sealing groove, the second bead is lower in height than the third bead, the first sealing surface is formed by a top surface of the second bead, and the second sealing surface is formed by a top surface of the third bead;

the second sealing part comprises a first groove which is formed by enclosing one side surface of the first convex rib and the third sealing surface and is matched with the second convex rib, and a second groove which is formed by enclosing the other side surface of the first convex rib and the fourth sealing surface and is matched with the third convex rib.

Preferably, first casing orientation the surface of second casing is equipped with first fixed punch combination, the second casing orientation the surface of second casing be equipped with the fixed punch combination of second of first fixed punch combination looks adaptation, just first casing and second casing are through wearing to establish the bolt locking of first fixed punch combination and second fixed punch combination is together fixed.

Preferably, the first sealing surface, the second sealing surface and the sealing groove are all annular around the periphery of the surface of the first housing, and the third sealing surface, the fourth sealing surface and the first rib are all annular around the periphery of the surface of the second housing.

The sealing structure provided by the embodiment of the utility model has the following beneficial effects: the first sealing surface and the third sealing surface are tightly attached, the second sealing surface and the fourth sealing surface are tightly attached, and the first convex rib is embedded into the sealing groove, so that three-level protection can be formed, the sealing effect with the protection grade of IPX1-IPX5 can be achieved without arranging a sealing member, the sealing structure is simple and easy to process, the material cost is effectively reduced, and the market competitiveness can be improved; because the sealing component is not required to be arranged, the types of the assembly materials are effectively reduced, the structural design is simplified, the problem of complicated structure is solved, the disassembly and assembly difficulty is reduced, the convenience of disassembly and assembly operation is greatly improved, and the maintenance efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a seal structure provided by an embodiment of the present invention;

FIG. 2 is an exploded schematic structural view of a seal provided by an embodiment of the present invention;

FIG. 3 is a schematic partial structural view of a first housing of a seal arrangement provided by an embodiment of the present invention;

fig. 4 is a partial structural schematic view of the second housing of the sealing structure provided by the embodiment of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Fig. 1 is a schematic structural diagram of a sealing structure provided in an embodiment of the present invention, where the sealing structure can be applied to the technical field of mechanical sealing, and particularly can achieve at least the protection level of IPX1-IPX5 in mechanical equipment with a high requirement on waterproof level, such as a water pump driver.

As shown in fig. 2, the sealing structure in the present embodiment includes a first housing 1 and a second housing 2, and the first housing 1 and the second housing 2 are detachably assembled together, for example, by bolting. The first casing 1 is provided with a first seal portion 11 on a surface facing the second casing 2, the first seal portion 11 includes a first seal surface 111 and a second seal surface 112 which are spaced apart from each other, and a seal groove 113 is formed between the first seal surface 111 and the second seal surface 112.

Further, the second housing 2 is provided with a second sealing portion 21 on a surface facing the first housing 1, the second sealing portion 21 includes a third sealing surface 211 and a fourth sealing surface 212, the third sealing surface 211 is adapted to the first sealing surface 111 (specifically, the third sealing surface 211 is parallel to the first sealing surface 111), and the fourth sealing surface 212 is adapted to the second sealing surface 112 (specifically, the fourth sealing surface 212 is parallel to the second sealing surface 112), so that when the first housing 1 and the second housing 2 are assembled together, the third sealing surface 211 and the first sealing surface 111 are closely attached together, and the fourth sealing surface 212 and the second sealing surface 112 are closely attached together, thereby effectively sealing an assembly gap between the first housing 1 and the second housing 2, and making it difficult for external impurities (such as moisture, dust, etc.) to permeate through the sealing structure.

In particular, the third sealing surface 211 and the fourth sealing surface 212 are equally spaced apart to ensure reliable correspondence with the first sealing surface 111 and the second sealing surface 112, and the first bead 213 is formed between the third sealing surface 211 and the fourth sealing surface 212, so that the third sealing surface 211 and the fourth sealing surface 212 can be blocked by the first bead 213 and the distance between the third sealing surface 211 and the fourth sealing surface 212 can be increased. Moreover, when the first housing 1 and the second housing 2 are assembled together, the first rib 213 is inserted into the sealing groove 113, so as to block between the first sealing surface 111 and the second sealing surface 112, thereby increasing the distance between the first sealing surface 111 and the second sealing surface 112, and forming a labyrinth-shaped passage with a broken line structure between the first sealing surface 111 and the second sealing surface 112, thereby increasing the flow resistance of external impurities (particularly, liquid), so that the external impurities penetrating through the first sealing surface 111 and the third sealing surface 211 and entering the sealing groove 113 are not easy to reach the second sealing surface 112 and the fourth sealing surface 212, thereby improving the sealing effect.

In order to further improve the sealing effect, the first sealing surface 111, the second sealing surface 112, the third sealing surface 211 and the fourth sealing surface 212 should have a smaller surface roughness (i.e. smooth surface), so that the connection between the first sealing surface 111 and the third sealing surface 211 and the connection between the second sealing surface 112 and the fourth sealing surface 212 are tighter, and the occurrence of a larger gap due to mutual abutting caused by the existence of a concave-convex structure is prevented.

In practical applications, when the first housing 1 and the second housing 2 are assembled together, the top surface of the first rib 213 embedded in the sealing groove 113 is preferably lower than the first sealing surface 111 and the second sealing surface 112, so as to ensure that the first rib 213 can be reliably blocked between the first sealing surface 111 and the second sealing surface 112, and simultaneously increase the distance between the top surface of the first rib 213 and the second sealing surface 112, so that foreign matters permeating into the sealing groove 113 are not easy to reach the second sealing surface 112. The first rib 213 is preferably inserted into the sealing groove 113 to a length greater than or equal to four fifths of the depth of the sealing groove 113.

Above-mentioned seal structure is through making first sealed face 111 and third sealed face 211 hug closely, second sealed face 112 hug closely with fourth sealed face 212 and first protruding muscle 213 imbeds seal groove 113, thereby can form tertiary protection, increase the distance between first sealed face 111 to the second sealed face 112 simultaneously, and form labyrinth-like broken line structure passageway, with increase flow resistance, need not to set up sealing member like this and also can reach the sealed effect that the protection level is IPX1-IPX5, this seal structure is simple workable, and effectively reduced the material cost, and then can promote market competition.

Because the sealing component is not required to be arranged, the types of the assembly materials are effectively reduced, the structural design is simplified, the problem of complicated structure is solved, the disassembly and assembly difficulty is reduced, the convenience of disassembly and assembly operation is greatly improved, and the maintenance efficiency is improved.

In an embodiment of the present invention, the second housing 2 is assembled above the first housing 1, the first sealing surface 111 is located outside the second sealing surface 112, and the first sealing surface 111 is lower than the second sealing surface 112, that is, the first sealing surface 111 located outside is lower than the second sealing surface 112, and there is a certain water level difference, so that if external impurities permeating into the sealing groove 113 accumulate, the external impurities will also rise to the first sealing surface 111, and then seep out from between the first sealing surface 111 and the third sealing surface 211, that is, the water level is hard to exceed the height of the first sealing surface 111, and the external impurities in the sealing groove 113 are prevented from contacting the second sealing surface 112 inside, thereby ensuring the sealing effect.

Further, the distance from the first seal surface 111 to the bottom wall of the seal groove 113 is preferably less than or equal to two thirds of the distance from the second seal surface 112 to the bottom wall of the seal groove 113, so that the water level difference between the first seal surface 111 and the second seal surface 112 is increased, and the foreign matter accumulated in the seal groove 113 is less likely to rise to the second seal surface 112 beyond the first seal surface 111.

In practical applications, the sealing strength between the second sealing surface 112 and the fourth sealing surface 212 is preferably greater than the sealing strength between the first sealing surface 111 and the third sealing surface 211, so that the level of foreign matters in the sealing groove 113 exceeds the level of the first sealing surface 111 to reach the second sealing surface 112, and the foreign matters are more likely to seep out from between the first sealing surface 111 and the third sealing surface 211. For example, the surface roughness of the second and

fourth sealing surfaces

112, 212 is made smaller than the surface roughness between the first and

third sealing surfaces

111, 211.

Particularly, when the first housing 1 and the second housing 2 are assembled together, gaps are respectively formed between two side walls of the first rib 213 and a groove wall of the sealing groove 113 and between a top surface of the first rib 213 and a bottom wall of the sealing groove 113, and the gaps form the labyrinth-shaped passage, so that the first sealing surface 111 and the third sealing surface 211 can be reliably and tightly attached, the second sealing surface 112 and the fourth sealing surface 212 can be reliably and tightly attached, the precision requirement for the matching of the first rib 213 and the sealing groove 113 can be reduced, the processing difficulty of the first rib 213 and the sealing groove 113 can be reduced, and the manufacturing cost can be reduced.

In another embodiment of the present invention, the first casing 1 includes a plurality of drainage holes, the sealing groove 113 is communicated with the outside of the first casing 1 through the drainage holes, and one end of the drainage hole communicated with the sealing groove 113 is higher than one end of the drainage hole communicated with the outside of the first casing 1, that is, the drainage hole is inclined downward toward the outside of the first casing 1, so as to effectively drain the external impurities in the sealing groove 113 and prevent the external impurities from accumulating in the sealing groove 113. In practical applications, the drainage holes are preferably formed at the bottom of the sealing groove 113, and the number of the drainage holes can be determined according to practical situations.

Specifically, the bottom walls of the first sealing surface 111, the second sealing surface 112 and the sealing groove 113 are all parallel to the joint surface of the first casing 1 and the second casing 2, so that the rationality of the structural design is ensured, the processing difficulty can be reduced, and the processing convenience of the processed first sealing surface 111, the processed second sealing surface 112, the processed third sealing surface 211 and the processed fourth sealing surface 212 is improved.

In other embodiments, the bottom wall of the sealing groove 113 is parallel to the joint surface, the first sealing surface 111 is inclined downward in a direction away from the sealing groove 113, and the second sealing surface 112 is inclined downward in a direction toward the sealing groove 113, so that not only can external impurities not easily penetrate into the sealing groove 113 from between the first sealing surface 111 and the third sealing surface 211, that is, the external impurities between the first sealing surface 111 and the third sealing surface 211 can be discharged to the outside of the first housing 1 along the first sealing surface 111 under the action of gravity, but also the external impurities in the assembly groove can not easily penetrate into the first housing 1 and the second housing 2 from between the second sealing surface 112 and the fourth sealing surface 212, that is, the external impurities between the second sealing surface 112 and the fourth sealing surface 212 can flow back to the sealing groove 113 along the second sealing surface 112 under the action of gravity.

In order to prevent foreign matter from penetrating between the second sealing surface 112 and the fourth sealing surface 212, chamfers 114 are provided between the second sealing surface 112 and the inner wall of the sealing groove 113, respectively.

Particularly, first sealed face 111 is equipped with breach groove 12 with the adjacent department of first casing 1's outer wall, and when first casing 1 and second casing 2 assembly are integrative, breach groove 12 encloses with the third sealed face 211 of second casing 2 and closes and form concave position chamber, first sealed face 111 can hide the bottom in concave position chamber like this, effectively hide first sealed face 111 in concave position intracavity promptly, and first sealed face 111 is located the top in concave position chamber, the outside impurity of first casing 1's outside is difficult to contact first sealed face 111 like this, thereby can increase the degree of difficulty that outside impurity permeates first sealed face 111, and then improve sealed effect.

In an embodiment of the present invention, the first sealing portion 11 includes a second rib 115 and a third rib 116 protruding toward the second housing 2, the second rib 115 is located outside the sealing groove 113, and the third rib 116 is located inside the sealing groove 113. In particular, the height of the second bead 115 is lower than the height of the third bead 116, and the first sealing surface 111 is formed by the top surface of the second bead 115 and the second sealing surface 112 is formed by the top surface of the third bead 116, so that the first sealing surface 111 is lower than the second sealing surface 112.

The second seal portion 21 includes a first groove adapted to the second bead 115 and a second groove adapted to the third bead 116, the first groove is formed by the first bead 115 and the third seal surface 211, and the second groove is formed by the other side surface of the first bead 115 and the fourth seal surface 212. The structure is simple and reasonable, the tight adhesion of the first sealing surface 111 and the third sealing surface 211 and the tight adhesion of the second sealing surface 112 and the fourth sealing surface 212 can be realized, the structure can be prevented from being complicated, and the rationality and the practicability of the structural design are greatly improved.

Referring to fig. 3 and 4, a first fixing hole set 13 is disposed on a surface of the first casing 1 facing the second casing 2, a second fixing hole set 22 matched with the first fixing hole set 13 is disposed on a surface of the second casing 2 facing the second casing 2, and the first casing 1 and the second casing 2 are locked and fixed together by bolts inserted through the first fixing hole set 13 and the second fixing hole set 22. Above-mentioned first casing 1 and second casing 2 adopt bolt locking, realize dismantling the connection, and the dismouting degree of difficulty is low, is favorable to improving maintenance efficiency.

In particular, the first sealing surface 111, the second sealing surface 112 and the sealing groove 113 are all in the shape of a ring surrounding the outer periphery of the surface of the first housing 1, and the third sealing surface 211, the fourth sealing surface 212 and the first rib 213 are all in the shape of a ring surrounding the outer periphery of the surface of the second housing 2, so that the interiors of the first housing 1 and the second housing 2 can be sealed, external impurities are not easy to permeate, and the sealing effect of the interiors of the first housing 1 and the second housing 2 is ensured. Of course, in practical applications, the specific arrangement of the first sealing surface 111, the second sealing surface 112, the sealing groove 113, the third sealing surface 211, the fourth sealing surface 212 and the first rib 213 may be determined according to practical situations.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A sealing structure is characterized by comprising a first shell and a second shell which are assembled together in a detachable mode, wherein the first shell is provided with a first sealing part on the surface facing the second shell, the first sealing part comprises a first sealing surface and a second sealing surface which are distributed at intervals, and a sealing groove is formed between the first sealing surface and the second sealing surface;

2. The seal structure of claim 1, wherein the second housing is fitted over the first housing, the first seal surface is located outside the second seal surface, and the first seal surface is lower than the second seal surface.

3. The seal structure of claim 1, wherein gaps are provided between the sidewall of the first bead and the groove wall of the seal groove, and between the top surface of the first bead and the bottom wall of the seal groove, respectively, when the first and second housings are assembled together.

4. The sealing structure according to claim 3, wherein the first housing includes a plurality of drainage holes, the sealing groove communicates with an outside of the first housing through the drainage holes, and an end of the drainage hole communicating with the sealing groove is higher than an end of the drainage hole communicating with the outside of the first housing.

5. The seal structure of claim 1, wherein a distance from the first sealing surface to a bottom wall of the seal groove is less than or equal to two-thirds of a distance from the second sealing surface to the bottom wall of the seal groove.

6. The seal structure of claim 1, wherein the first sealing surface, the second sealing surface, and the bottom wall of the seal groove are each parallel to a joining surface of the first and second casings;

7. The seal structure of claim 1, wherein a chamfer is provided between the second sealing surface and the inner wall of the seal groove.

8. The seal structure according to claim 1, wherein the first seal portion includes a second bead and a third bead projecting toward the second housing, the second bead is located outside the seal groove, the third bead is located inside the seal groove, the second bead is lower in height than the third bead, and the first seal surface is constituted by a top surface of the second bead, the second seal surface is constituted by a top surface of the third bead;

9. The sealing structure according to any one of claims 1 to 7, wherein a first fixing hole set is provided on a surface of the first housing facing the second housing, a second fixing hole set adapted to the first fixing hole set is provided on a surface of the second housing facing the second housing, and the first housing and the second housing are locked and fixed together by bolts inserted through the first fixing hole set and the second fixing hole set.

10. The seal structure of claim 1, wherein the first seal surface, the second seal surface, and the seal groove are each annular around an outer periphery of a surface of the first housing, and the third seal surface, the fourth seal surface, and the first bead are each annular around an outer periphery of a surface of the second housing.