Connector sealing structure and connector thereof

Abstract

The embodiment of the utility model discloses a connector sealing structure and a connector thereof. The connector sealing structure comprises a base part; the radial sealing part annularly protrudes outwards from one side of the base part in the radial direction, and when the negative electrode connector and the positive electrode connector are buckled, the radial sealing part can radially seal the positive electrode connector and the negative electrode connector in a deformable mode; the axial sealing part, the radial sealing part and the axial sealing part are arranged at intervals in the axial direction of the base part, the axial sealing part extends outwards annularly in the radial direction from the other side of the base part relative to the radial sealing part, and when the negative electrode connector and the positive electrode connector are buckled, the axial sealing part axially seals the positive electrode connector and the negative electrode connector in a deformable mode. Therefore, after the positive electrode connector and the negative electrode connector are plugged and buckled, the gap position can be filled with the connector sealing structure elastically, and axial sealing and radial sealing of the connectors are achieved at the same time.

Description

Technical Field

[0001] The present application relates to the field of electrical appliances, and in particular to a connector sealing structure and a connector thereof. Background Art

[0002] In order to cope with the increasingly severe environmental pollution caused by the use of traditional fossil energy, the green renewable energy industry has developed rapidly in recent years. Solar cell power generation technology that uses the photovoltaic effect to generate electricity is an important green energy technology. At present, photovoltaic modules composed of multiple solar cells are widely used in various photovoltaic power generation systems as basic photovoltaic power generation units, or transparent film modules are used as building curtain wall materials to build energy-saving and environmentally friendly buildings. In order to improve the power generation efficiency per unit area, various new and efficient photovoltaic modules are constantly being developed and applied, such as double-sided power generation modules, photovoltaic tile modules, etc.

[0003] In actual photovoltaic power generation systems or power stations, connectors are needed to connect photovoltaic modules to form a power generation module array with a designed output power. Connectors with low contact impedance, stable connection and long-term reliability are one of the important electrical components that can ensure the efficient and safe operation of the power generation system. Sealing rings are usually used between the positive and negative connectors for waterproofing. If the seal fails, the contact terminals of the connectors will be corroded and disturbed by the external natural environment, and the conductive transmission capacity will inevitably be affected.

[0004] Application Contents

[0005] One or more embodiments of the present application provide a connector sealing structure to solve or at least partially alleviate the problem in the related art that the connector sealing structure can only achieve sealing in a single direction.

[0006] One or more embodiments of the present application provide a connector to solve or at least partially alleviate the problem in the related art that the connector is sealed in only one direction.

[0007] In a first aspect of the present application, a connector sealing structure is provided, which adopts the following technical solution: a connector sealing structure, comprising: a base; a radial sealing portion, the radial sealing portion protrudes radially outward in an annular shape from one side of the base, and when the negative connector and the positive connector are buckled together, the radial sealing portion can deformably radially seal the positive connector and the negative connector; an axial sealing portion, the radial sealing portion and the axial sealing portion are spaced apart along the axial direction of the base, the axial sealing portion extends radially outward in an annular shape from the other side of the base relative to the radial sealing portion, and when the negative connector and the positive connector are buckled together, the axial sealing portion can deformably axially seal the positive connector and the negative connector.

[0008] In one of the embodiments, the axial sealing portion is suspended relative to the end face of the positive connector, so that an escape space is formed between the axial sealing portion and the end face of the positive connector. When the negative connector and the positive connector are buckled together, the end face of the negative connector abuts against the axial sealing portion, thereby axially sealing the connector.

[0009] In one embodiment, the base is provided with a sealing rib, and the sealing rib and the radial sealing portion are respectively located on both axial sides of the axial sealing portion, and the sealing rib extends axially from the bottom surface of the axial sealing portion to the end face of the positive connector. When the sealing rib conflicts with the end face of the positive connector, the axial sealing portion is suspended relative to the end face of the positive connector.

[0010] In one embodiment, the inner wall of the base is provided with a conical surface, and the conical surface extends outward at an angle, and the axial sealing portion is located on the outer peripheral side of the conical surface. When the negative connector and the positive connector are buckled, the end face of the negative connector abuts against the axial sealing portion, so that the conical surface is squeezed to fit the outer wall of the positive connector.

[0011] In one embodiment, the radial sealing portion and the axial sealing portion are integrally formed on the base at intervals along the axial direction, the conical surface is formed on the inner side walls of the axial sealing portion and the sealing rib, and the base is a cylindrical structure that can be sleeved on the positive connector.

[0012] In one embodiment, the radial dimension of the radial sealing portion is smaller than the radial dimension of the axial sealing portion, so that the radial sealing portion is accommodated between the negative connector and the positive connector, and the end surface of the negative connector abuts against the axial sealing portion.

[0013] In one embodiment, the side of the radial sealing portion facing the inner wall of the negative pole connector is an arc surface, which is suitable for the radial sealing portion to radially deform and contact the inner wall of the negative pole connector, and the side of the axial sealing portion facing the end face of the negative pole connector is a plane, which is suitable for the axial sealing portion to axially deform and contact the end face of the negative pole connector.

[0014] In one of the embodiments, the connector sealing structure is made of elastic soft glue.

[0015] The second aspect of the present application provides a connector, which adopts the following technical solution: a connector, comprising a positive connector and a negative connector suitable for mutual plugging and snapping; a connector sealing structure as described above, wherein the connector sealing structure is sleeved on the positive connector, and when the negative connector and the positive connector are snapped together, the end face of the negative connector conflicts with the axial sealing portion of the connector sealing structure, and the inner wall of the negative connector conflicts with the radial sealing portion of the connector sealing structure, thereby axially and radially sealing the connector.

[0016] In one embodiment, the positive connector includes a first main body, and an insertion portion protruding from one end of the first main body and extending forward, the insertion portion is provided with an annular protruding positioning portion, so that the connector sealing structure is maintained at the rear end of the insertion portion, the connection between the insertion portion and the first main body is a truncated table surface, suitable for fitting with the conical surface of the connector sealing structure, the periphery of the insertion portion is provided with a latch arm protruding from the first main body, and the end of the latch arm is provided with a hook; the negative connector includes a second main body, a receiving groove and a docking portion, the receiving groove is provided in the second main body, suitable for accommodating the insertion portion, the radial sealing portion is suitable for interference fit with the receiving groove, the docking portion is located at one end of the second main body, a through hole is formed between the docking portion and the second main body, the latch arm is suitable for passing through the through hole so that the hook is engaged with the docking portion to lock the positive connector and the negative connector, and the end face of the second main body is against the axial sealing portion, wherein the interference amount of the matching clearance between the connector sealing structure and the positive connector and the negative connector is 20% to 30%.

[0017] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0018] (1) After the positive connector and the negative connector are plugged in and fastened together, the connector sealing structure is able to fill the gap position and simultaneously realize the axial sealing and radial sealing of the connector.

[0019] (2) The avoidance space can avoid the axial sealing portion that is deformed by the resistance, so that the axial sealing portion can be kept in elastic deformation, which is beneficial to improving the service life of the connector sealing structure.

[0020] (3) The end face of the negative electrode connector contacts the axial sealing portion, and the elastic force of the axial sealing portion pushes the negative electrode connector back, so that the buckling of the positive electrode connector and the negative electrode connector is more stable.

[0021] (4) The inner wall of the base is provided with a tapered surface extending outwardly at an angle. When the negative electrode connector abuts against the axial sealing portion, the tapered surface is pressed against the outer wall of the positive electrode connector to improve the reliability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a connector sealing structure according to some embodiments of the present application;

[0023] Figure 2 is a cross-sectional view of a connector sealing structure according to some embodiments of the present application;

[0024] Figure 3 is a cross-sectional view of a connector according to some embodiments of the present application;

[0025] Figure 4 yes Figure 3 A magnified view of point A;

[0026] Figure 5 is a schematic structural diagram of a positive electrode connector according to some embodiments of the present application;

[0027] Figure 6 is a schematic diagram of the structure of a negative electrode connector according to some embodiments of the present application.

[0028] In the figure: 10, connector sealing structure; 11, base; 12, radial sealing portion; 13, axial sealing portion; 14, sealing rib; 15, conical surface; 16, avoidance space; 20, connector; 21, positive connector; 211, first main body; 212, insertion portion; 213, positioning portion; 214, holding arm; 215, hook; 216, frustum; 22, negative connector; 221, second main body; 222, receiving groove; 223, docking portion; 224, through hole. DETAILED DESCRIPTION

[0029] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0031] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0032] One or more embodiments of the present application disclose a connector sealing structure 10, referring to Figures 1 to 3 The connector sealing structure 10 includes: a base 11, a radial sealing portion 12 and an axial sealing portion 13. The radial sealing portion 12 protrudes radially outward in an annular shape from one side of the base 11. When the negative connector 22 and the positive connector 21 are buckled, the radial sealing portion 12 can deformably radially seal the positive connector 21 and the negative connector 22; the axial sealing portion 13 and the radial sealing portion 12 are spaced apart in the axial direction of the base 11. The axial sealing portion 13 extends radially outward in an annular shape from the other side of the base 11 relative to the radial sealing portion 12. When the negative connector 22 and the positive connector 21 are buckled, the axial sealing portion 13 can deformably axially seal the positive connector 21 and the negative connector 22.

[0033] That is to say, when the positive connector 21 and the negative connector 22 are plugged and fastened, the positive connector 21 is inserted into the negative connector 22, the inner wall of the base 11 of the connector sealing structure 10 is adapted to fit with the outer wall of the positive connector 21, and the radial sealing portion 12 protrudes radially outward in an annular manner from one side of the base 11, and is able to abut against the inner wall of the negative connector 22, thereby filling the radial gap between the positive connector 21 and the negative connector 22 through the base 11 and the radial sealing portion 12, thereby achieving radial sealing. Further, the axial sealing portion 13 and the radial sealing portion 12 are spaced and concentrically arranged on the base 11 in the axial direction, and extend radially outward in an annular manner from the other side of the base 11, and the end face of the negative connector 22 abuts against the axial sealing portion 13, thereby filling the axial gap between the positive connector 21 and the negative connector 22 through the base 11 and the axial sealing portion 13, thereby achieving axial sealing. At the same time, the elastic force of the axial sealing portion 13 pushes the negative electrode connector 22 backward, so that the buckling of the positive electrode connector 21 and the negative electrode connector 22 is more stable.

[0034] In some embodiments, reference Figure 3 and Figure 4 The axial sealing portion 13 is suspended relative to the end surface of the positive connector 21, so that an escape space 16 is formed between the axial sealing portion 13 and the end surface of the positive connector 21. When the negative connector 22 and the positive connector 21 are buckled together, the end surface of the negative connector 22 abuts against the axial sealing portion 13, thereby axially sealing the connector 20.

[0035] It can be understood that, since the axial sealing portion 13 is suspended relative to the end face of the positive connector 21, an escape space 16 is formed between the axial sealing portion 13 and the end face of the positive connector 21. When the end face of the negative connector 22 abuts against the axial sealing portion 13, the axial sealing portion 13 deforms toward the end face of the positive connector 21, and the escape space 16 can avoid the axial sealing portion 13 that is deformed by the abutment, thereby preventing the axial sealing portion 13 from abutting against the end face of the positive connector 21. It can be understood that when the axial sealing portion 13 is clamped and squeezed between the end face of the negative connector 22 and the end face of the positive connector 21, if the squeezing force is too large, plastic deformation is easily generated, which affects the life of the connector sealing structure 10. The escape space 16 in this embodiment can prevent the axial sealing portion 13 from contacting the end face of the positive connector 21, so that the axial sealing portion 13 remains in elastic deformation, which is conducive to improving the service life of the connector sealing structure 10.

[0036] In some embodiments, reference Figures 1 to 3 The base 11 is provided with a sealing rib 14, and the sealing rib 14 and the radial sealing portion 12 are respectively located on both axial sides of the axial sealing portion 13. The sealing rib 14 extends axially from the bottom surface of the axial sealing portion 13 to the end surface of the positive connector 21. When the sealing rib 14 conflicts with the end surface of the positive connector 21, the axial sealing portion 13 is suspended relative to the end surface of the positive connector 21.

[0037] That is to say, the sealing rib 14 is annularly protruded from one side of the axial sealing portion 13 toward the end face of the positive connector 21, so as to be able to abut against the end face of the positive connector 21. When the positive connector 21 and the negative connector 22 are plugged together, the end face of the negative connector 22 abuts against the axial sealing portion 13, so that the axial sealing portion 13 is deformed toward the end face of the positive connector 21. Since the sealing rib 14 abuts against the end face of the positive connector 21, it supports the axial sealing portion 13, thereby avoiding the abutment between the axial sealing portion 13 and the positive connector 21, which is beneficial to improving the service life of the connector sealing structure 10.

[0038] In other embodiments, the axial sealing portion 13 may also be supported by a protruding structure on the positive connector 21 , so that the axial sealing portion 13 is suspended relative to the end surface of the positive connector 21 .

[0039] In some embodiments, reference Figures 2 to 4 The inner wall of the base 11 is provided with a conical surface 15, and the conical surface 15 extends outwardly at an angle. The axial sealing portion 13 is located on the outer peripheral side of the conical surface 15. When the negative connector 22 and the positive connector 21 are buckled together, the end surface of the negative connector 22 abuts against the axial sealing portion 13, and force is applied to the conical surface 15 through the axial sealing portion 13, thereby squeezing the conical surface 15 to fit the outer wall of the positive connector 21, so as to further improve the reliability of the seal.

[0040] Specifically, refer to Figures 1 to 3 The base 11 is a cylindrical structure and can be sleeved on the positive connector 21. The radial sealing portion 12 and the axial sealing portion 13 are integrally formed on the base 11 along the axial direction. The conical surface 15 is formed on the inner side wall of the axial sealing portion 13 and the sealing rib 14, so that the structure of the connector sealing structure 10 is simpler and more compact, which is convenient for production and installation.

[0041] Further, see Figures 1 to 3 , the radial dimension of the radial sealing portion 12 is smaller than the radial dimension of the axial sealing portion 13, so that the radial sealing portion 12 is accommodated between the negative connector 22 and the positive connector 21, and the end surface of the negative connector 22 is against the axial sealing portion 13. It can be understood that after the connector sealing structure 10 is installed on the positive connector 21, the radial and axial multi-directional sealing of the connector 20 can be achieved by plugging and buckling the positive connector 21 and the negative connector 22.

[0042] Further, refer to Figures 1 to 3 The side of the radial sealing portion 12 facing the inner wall of the negative connector 22 is an arc surface, which is suitable for the radial sealing portion 12 to be radially deformed and abutted against the inner wall of the negative connector 22, that is, it is convenient to install the radial sealing portion 12 into the negative connector 22, and the radial sealing portion 12 can form a surface contact with the inner wall of the negative connector 22, so as to reliably seal the connector 20 radially. The side of the axial sealing portion 13 facing the end face of the negative connector 22 is a plane, which is suitable for the axial sealing portion 13 to be axially deformed and abutted against the end face of the negative connector 22, that is, it can form a surface contact with the end face of the negative connector 22, so as to reliably seal the connector 20 axially.

[0043] In some embodiments, the material of the connector sealing structure 10 is elastic soft rubber. The elastic soft rubber specifically includes but is not limited to polyurethane, polyethylene, polytetrafluoroethylene, silicone rubber, fluororubber, fluorosilicone rubber, butyl rubber, nitrile rubber, chloroprene rubber, epichlorohydrin rubber or natural rubber, etc. The elasticity of the connector sealing structure 10 is fully utilized to achieve radial and axial multi-directional sealing of the connector 20 to ensure the sealing effect, and at the same time, the characteristics of the soft rubber are utilized to cope with different use environments.

[0044] One or more embodiments of the present application also disclose a connector 20, referring to Figures 3 to 6, including a positive connector 21 and a negative connector 22 suitable for mutual insertion and buckling, and the above-mentioned connector sealing structure 10. The connector sealing structure 10 is sleeved on the positive connector 21. When the negative connector 22 and the positive connector 21 are buckled, the inner wall of the negative connector 22 conflicts with the radial sealing part 12 of the connector sealing structure 10, and the end face of the negative connector 22 conflicts with the axial sealing part 13 of the connector sealing structure 10, so that the connector 20 is axially and radially sealed.

[0045] Specifically, refer to Figure 4 and Figure 5 The positive connector 21 includes a first main body 211, and an insertion portion 212 protruding from one end of the first main body 211 and extending forward. The insertion portion 212 is provided with a ring-shaped protruding positioning portion 213, so that the connector sealing structure 10 can be kept at the rear end of the insertion portion 212, and the connector sealing structure 10 can be prevented from axially moving along the insertion portion 212 when the positive connector 21 and the negative connector 22 are plugged in and out. Further, the connection between the insertion portion 212 and the first main body 211 is a frustum 216, which is suitable for fitting with the conical surface 15 of the connector sealing structure 10. When the negative connector 22 and the positive connector 21 are buckled, the end face of the negative connector 22 abuts against the axial sealing portion 13, and the axial sealing portion 13 can apply force to the conical surface 15, thereby squeezing the conical surface 15 to fit the outer wall of the positive connector 21, so as to improve the reliability of the seal. A buckling arm 214 is disposed on the periphery of the inserting portion 212 and protrudes from the first main body portion 211 . A hook 215 is disposed at the end of the buckling arm 214 .

[0046] Reference Figure 4 and Figure 6 The negative connector 22 includes a second main body 221, a receiving groove 222 and a docking portion 223. The receiving groove 222 is provided in the second main body 221 and is suitable for accommodating the insertion portion 212. The radial sealing portion 12 is suitable for interference fit with the receiving groove 222. The docking portion 223 is located at one end of the second main body 221. A through hole 224 is formed between the docking portion 223 and the second main body 221. The holding arm 214 is suitable for passing through the through hole 224 so that the hook 215 is engaged with the docking portion 223 to lock the positive connector 21 and the negative connector 22, and the end surface of the second main body 221 is against the axial sealing portion 13. At the same time, the elastic force of the axial sealing portion 13 pushes the negative connector 22 back, so that the hook 215 of the positive connector 21 and the docking portion 223 of the negative connector 22 are more firmly engaged.

[0047] It is worth mentioning that when the interference of the fitting clearance between the connector sealing structure 10 and the positive connector 21 and the negative connector 22 is 20% to 30%, the sealing effect is better and can prevent water pressure or air pressure of about 0.3Mpa. Specifically, the interference can be 20%, 25% or 30%.

[0048] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A connector sealing structure, characterized in that: include: base; A radial sealing portion, the radial sealing portion protrudes radially outward in an annular manner from one side of the base portion, and when the negative electrode connector and the positive electrode connector are buckled together, the radial sealing portion can deform to radially seal the positive electrode connector and the negative electrode connector; The axial sealing portion, the radial sealing portion and the axial sealing portion are spaced apart along the axial direction of the base, the axial sealing portion extends radially outward in an annular manner from the other side of the base relative to the radial sealing portion, and when the negative connector and the positive connector are buckled, the axial sealing portion can deformably axially seal the positive connector and the negative connector.

2. The connector sealing structure according to claim 1, characterized in that: The axial sealing portion is suspended relative to the end face of the positive connector, so that an escape space is formed between the axial sealing portion and the end face of the positive connector. When the negative connector and the positive connector are buckled together, the end face of the negative connector abuts against the axial sealing portion, thereby axially sealing the connector.

3. The connector sealing structure according to claim 1, characterized in that: The base is provided with a sealing rib, and the sealing rib and the radial sealing portion are respectively located on both axial sides of the axial sealing portion, and the sealing rib extends axially from the bottom surface of the axial sealing portion to the end surface of the positive connector. When the sealing rib conflicts with the end surface of the positive connector, the axial sealing portion is suspended relative to the end surface of the positive connector.

4. The connector sealing structure according to claim 3, characterized in that: The inner wall of the base is provided with a conical surface, and the conical surface extends outwardly at an angle. The axial sealing portion is located on the outer peripheral side of the conical surface. When the negative connector and the positive connector are buckled, the end face of the negative connector abuts against the axial sealing portion, so that the conical surface is squeezed to fit the outer wall of the positive connector.

5. The connector sealing structure according to claim 4, characterized in that: The radial sealing portion and the axial sealing portion are integrally formed on the base portion at intervals along the axial direction, the conical surface is formed on the inner side walls of the axial sealing portion and the sealing rib, and the base portion is a cylindrical structure and can be sleeved on the positive electrode connector.

6. The connector sealing structure according to any one of claims 1 to 3, characterized in that: The radial dimension of the radial sealing portion is smaller than the radial dimension of the axial sealing portion, so that the radial sealing portion is accommodated between the negative electrode connector and the positive electrode connector, and the end surface of the negative electrode connector abuts against the axial sealing portion.

7. The connector sealing structure according to claim 6, characterized in that: The side of the radial sealing portion facing the inner wall of the negative pole connector is an arc surface, which is suitable for the radial sealing portion to radially deform and contact the inner wall of the negative pole connector. The side of the axial sealing portion facing the end face of the negative pole connector is a plane, which is suitable for the axial sealing portion to axially deform and contact the end face of the negative pole connector.

8. The connector sealing structure according to any one of claims 1 to 3, characterized in that: The connector sealing structure is made of elastic soft glue.

9. A connector, characterized in that: include A positive connector and a negative connector adapted to be plugged and snapped into each other; The connector sealing structure as described in any one of claims 1 to 8, wherein the connector sealing structure is sleeved on the positive connector, and when the negative connector and the positive connector are buckled together, the end face of the negative connector conflicts with the axial sealing portion of the connector sealing structure, and the inner wall of the negative connector conflicts with the radial sealing portion of the connector sealing structure, thereby axially and radially sealing the connector.

10. The connector according to claim 9, characterized in that: The positive connector comprises a first main body, and an insertion portion protruding from one end of the first main body and extending forward, the insertion portion is provided with an annular protruding positioning portion, so that the connector sealing structure is retained at the rear end of the insertion portion, the connection between the insertion portion and the first main body is a frustum, suitable for fitting with the conical surface of the connector sealing structure, the periphery of the insertion portion is provided with a buckling arm protruding from the first main body, and the end of the buckling arm is provided with a hook; The negative connector includes a second main body, a receiving groove and a docking portion, wherein the receiving groove is provided in the second main body and is suitable for accommodating the insertion portion, the radial sealing portion is suitable for interference fit with the receiving groove, the docking portion is located at one end of the second main body, a through hole is formed between the docking portion and the second main body, the latching arm is suitable for passing through the through hole so that the hook is engaged with the docking portion to lock the positive connector and the negative connector, and the end face of the second main body is against the axial sealing portion, wherein the interference amount of the fitting clearance between the connector sealing structure and the positive connector and the negative connector is 20% to 30%.

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