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CN-122026159-A - Sealing structure of connector and connector thereof

CN122026159ACN 122026159 ACN122026159 ACN 122026159ACN-122026159-A

Abstract

The invention relates to the technical field of sealing structures, in particular to a sealing structure of a connector, which comprises at least two sealing rings arranged on a connector shell, a pressure balance cavity formed in the shell, two sealing rings respectively comprising a main sealing ring and an auxiliary sealing ring, wherein the two sealing rings are arranged at intervals along the axial direction, the pressure balance cavity is positioned between the main sealing ring and the auxiliary sealing ring, a pressure balance channel penetrates through the shell and is communicated with the pressure balance cavity, and the connector further comprises a male head and a female head and further comprises the sealing structure. The invention has the function of reliably preventing the sealing ring from failing for a long time under the severe pressure change environment by combining active pressure balance with dynamic sealing compensation.

Inventors

  • DUAN ZHONGLIN

Assignees

  • 广东创辉诚科技有限公司

Dates

Publication Date
20260512
Application Date
20260408

Claims (10)

  1. 1. The utility model provides a seal structure of connector, its characterized in that includes two at least sealing washer (1) that set up on the connector housing, still includes: a pressure balance chamber (2) formed in the housing; The two sealing rings (1) are a main sealing ring (11) (1) and an auxiliary sealing ring (12) (1) respectively, the two sealing rings (1) are arranged at intervals along the axial direction, and the pressure balance cavity (2) is positioned between the main sealing ring (11) (1) and the auxiliary sealing ring (12) (1); and a pressure balance channel (3) penetrates through the shell and is communicated with the pressure balance cavity (2).
  2. 2. The sealing structure of a connector according to claim 1, wherein a balance slider (31) is provided in the pressure balance passage (3).
  3. 3. The sealing structure of a connector according to claim 2, wherein the pressure balance channel (3) is provided with limiting blocks (32) at two ends of the balance sliding block (31).
  4. 4. A sealing arrangement of a connector according to claim 1, characterized in that each sealing ring (1) is provided with a dynamic compensation member (13), the dynamic compensation members (13) providing a continuous elastic pre-tightening force to the sealing ring (1).
  5. 5. A sealing structure of a connector according to claim 4, wherein the dynamic compensation member (13) is an elastic member which abuts against the back pressure side of the seal ring (1).
  6. 6. A connector comprising a male (4) and a female (5) and further comprising a sealing arrangement according to any one of claims 1-5.
  7. 7. A connector as claimed in claim 6, wherein said male head (4) has at one end at least one male head (4) interface for connection to a cable, each of said wire interfaces being connected to a wire post (42); One end of the female head (5) is provided with at least one female head (5) interface connected with the cable, the other end of the female head (5) is provided with a wire inserting column (52), and the wire inserting column (52) is provided with conductive grooves (521) which are in one-to-one correspondence with each female head (5) interface.
  8. 8. A connector according to claim 7, wherein the pressure equalization chamber (2) is open to the wire insertion post (52).
  9. 9. A connector according to claim 7, wherein the wire insertion post (52) is provided with a guide groove (522), and the male head (4) is provided with a guide block (43) which is engaged with the guide groove (522).
  10. 10. A connector according to claim 6, wherein each male head (4) is provided with a logo on the peripheral side of the interface, and each conductive groove (521) is provided with the logo corresponding to the male head (4) interface.

Description

Sealing structure of connector and connector thereof Technical Field The invention relates to the technical field of sealing structures, in particular to a sealing structure of a connector and the connector thereof. Background As a key node for signal and power transmission, the electric connector is increasingly widely applied to the fields of new energy automobiles, deep sea exploration, aerospace, industrial automation and the like, and the working environment is also becoming severe. These application scenarios not only require the connector to withstand extreme temperatures, vibrations and chemical corrosion, but more frequently to be exposed to severely fluctuating environmental pressures. For example, the pressure of a thermal management system of a new energy automobile can change along with working conditions, underwater equipment needs to bear water pressure changing along with depth, and aviation equipment can experience rapid air pressure lifting. Therefore, developing sealing techniques that can maintain high reliability for long periods of time under dynamic pressure has become a central challenge in the connector field, particularly when high value or safety critical systems are involved. To cope with harsh environments, a variety of sealing techniques have been developed in the industry. For occasions requiring extremely high air tightness, a sintering sealing connector adopting a 'glass+metal' sealing process is a mainstream scheme, and the sintering sealing connector realizes permanent sealing through matching sealing of glass and metal and has excellent high-temperature, high-pressure and corrosion resistance. However, this process is costly, structurally non-removable, and is mainly suited for permanent packaging scenarios that are not sensitive to volume and weight, and do not require maintenance. For more common industrial and vehicle connectors that require plugging and maintenance, elastomer-based mechanical sealing solutions are widely employed. The scheme can be subdivided into two types, namely, in the scenes of rotating shaft sealing and the like, the pressure difference at two sides of a sealing element is actively balanced by introducing a piston and a balance cavity, so that the sealing works under the condition of approaching zero pressure difference, the reliability under the high-temperature and high-pressure environment is obviously improved, and the scheme adopts a structure provided with a plurality of redundant static sealing rings, and forms a multistage sealing barrier by arranging two or more sealing rings axially or radially, so that the reliability is improved and single-point failure is prevented by utilizing physical redundancy. Although each of the mechanical sealing schemes described above has advantages, there are significant limitations in facing severe and rapid pressure changes. The piston balancing solution of CN105515256B, while effective, is complex in structure, bulky, and relies on movable piston components, and is not suitable for a universal electrical connector that is compact, space and weight sensitive, and has a variety of interface styles. While the more common multi-channel redundant static seal ring scheme relies on the pre-compression deformation of the seal ring to create contact stresses to block the leakage path. However, this solution has the fundamental disadvantage that when the ambient pressure changes rapidly, the pressure cannot be transferred and equalized in time inside the sealing system. This will result in the outermost sealing ring being subjected to extremely high ambient pressure on one side and relatively low on the other side due to the transfer hysteresis, thus creating a large transient pressure differential across it. Under the action of high pressure difference, the sealing ring material can be forced to be extruded and deformed, and even pushed out of the mounting groove, so that the structure of the sealing ring is damaged and the instant sealing is invalid. At this time, even if the inner side is provided with a redundant backup sealing ring, the whole sealing system is exposed to the risk due to the structural damage of the first defense line, and the preset redundant backup effect is greatly reduced before severe pressure impact. Disclosure of Invention In view of the shortcomings of the prior art, it is an object of the present invention to provide a sealing structure of a connector and a connector thereof, which can reliably prevent a failure of a seal ring for a long period of time under severe pressure change environments by combining active pressure balance with dynamic seal compensation. The above-mentioned application purpose of the invention is realized through the following technical scheme: The utility model provides a seal structure of connector, its characterized in that includes two at least sealing washer that set up on the connector housing, still includes: A pressure balance chamber formed within th