CN115441245A - Breakdown-preventing and waterproof connector - Google Patents

Breakdown-preventing and waterproof connector Download PDF

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Publication number
CN115441245A
CN115441245A CN202110616578.XA CN202110616578A CN115441245A CN 115441245 A CN115441245 A CN 115441245A CN 202110616578 A CN202110616578 A CN 202110616578A CN 115441245 A CN115441245 A CN 115441245A
Authority
CN
China
Prior art keywords
connector
positive
negative
contact pin
waterproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110616578.XA
Other languages
Chinese (zh)
Inventor
彭祁军
朱于静
郑朋朋
李艳群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Zhengtai Xinhui Photovoltaic Co ltd
Original Assignee
Zhejiang Xinhui Photovoltaic Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Xinhui Photovoltaic Technology Co ltd filed Critical Zhejiang Xinhui Photovoltaic Technology Co ltd
Priority to CN202110616578.XA priority Critical patent/CN115441245A/en
Publication of CN115441245A publication Critical patent/CN115441245A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure

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  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The invention discloses a breakdown-preventing and waterproof connector, and belongs to the technical field of photovoltaic system connectors. According to the invention, through the design of the contact pin and the joint structure, air gaps with certain widths are respectively formed between the positive contact pin and the positive joint and between the negative contact pin and the negative joint, so that air isolation is formed, and the effects of isolation protection and breakdown prevention are achieved. Meanwhile, the anode connector and the cathode connector are respectively processed into an inner layer and an outer layer, the inner layer is matched with the contact pin, the outer layer is contacted with air, an air gap with a certain width is formed between the inner layer and the outer layer, so that the metal piece in the inner layer and the plastic piece in the outer layer form air isolation, and the effect of isolation protection and breakdown prevention is achieved. The structure can also avoid that water is greatly infiltrated into the position where the connector is contacted with the metal piece due to the water absorption of the plastic part material outside the connector. Meanwhile, the plug is arranged between the waterproof ring and the cable, and when the nut is screwed down, the plug is extruded by the waterproof ring and then fastens the cable to play a role in waterproof wire fixation.

Description

Breakdown-preventing and waterproof connector
Technical Field
The invention belongs to the technical field of photovoltaic system connectors, and particularly relates to a connector with breakdown prevention and waterproof functions.
Background
The connector is a connecting device which plays a role in transmitting current and protecting safety in a photovoltaic system. The breakdown resistance and the waterproof performance are one of the keys in the design of the connector structure. The existing connector shell is generally made of nylon plastic materials, has the advantages of weather resistance, acid and alkali resistance and the like, but has the defects of easy water absorption and reduced insulating property after water absorption. And no gap exists between the outer plastic part joint and the inner metal part pin of the existing connector. When the connector is in a wet environment or immersed in water, the external plastic part material absorbs water, so that a large amount of water can penetrate into the position where the connector is in contact with the metal part, and the electric breakdown fault is caused. On the other hand, the pin section of the connector is the place with the highest risk of high-voltage breakdown, and no obvious gap exists between the existing connector pin and the connector, so that the relevant position becomes a breakdown weak point.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the breakdown-proof and waterproof connector which is novel in structural design, easy to manufacture, and capable of improving the electrical safety level and reliability.
The technical scheme of the invention is as follows:
a breakdown-preventing and waterproof connector comprises a positive electrode connector, a positive electrode contact pin, a negative electrode connector and a negative electrode contact pin; the positive contact pin is embedded in the positive connector, and the negative contact pin is embedded in the negative connector;
a first air gap is formed between the positive contact pin and the positive connector;
the positive electrode joint comprises a positive electrode joint inner layer and a positive electrode joint outer layer, the positive electrode joint inner layer is matched with the positive electrode contact pin, the positive electrode joint outer layer is contacted with air, and a second air gap is formed between the positive electrode joint inner layer and the positive electrode joint outer layer;
a third air gap is formed between the negative contact pin and the negative joint;
the negative electrode joint comprises a negative electrode joint inner layer and a negative electrode joint outer layer, the negative electrode joint inner layer is matched with the negative electrode contact pin, the negative electrode joint outer layer is in contact with air, and a fourth air gap is formed between the negative electrode joint inner layer and the negative electrode joint outer layer.
Further, the connectors are divided into a positive connector and a negative connector; when the positive connector and the negative connector are oppositely inserted, the end part of the positive connector is inserted into the negative connector, and meanwhile, the positive pin in the positive connector is inserted into the negative pin in the negative connector.
Furthermore, retaining rings are respectively arranged between the positive contact pin and the positive connector and between the negative contact pin and the negative connector, and the retaining rings are assembled with the positive contact pin and the negative contact pin or integrally formed; the elastic part of the retaining ring is in contact with the inner parts of the anode joint and the cathode joint to form an inverted buckle; the positive contact pin and the negative contact pin are metal pieces.
Further, the positive contact pin is riveted with a positive cable; and the negative contact pin is riveted with the negative cable.
Furthermore, waterproof rings are nested on the positive cable and the positive joint, and the positive joint is connected with the nut through threads; the negative pole cable and the negative pole connector are nested with a waterproof ring, and the negative pole connector is connected with the nut through threads.
Furthermore, plugs are respectively arranged between the positive cable and the waterproof ring and between the negative cable and the waterproof ring.
Furthermore, positive pole connects, negative pole connects, the nut is the plastic part, the stopper is the stereoplasm spare.
Further, the waterproof ring is made of a silica gel piece.
Furthermore, an O-shaped ring is sleeved at one end of the anode connector, which is inserted into the cathode connector, and the O-shaped ring is a silica gel piece.
The beneficial technical effects of the invention are as follows:
according to the technical scheme, the positive contact pin and the positive connector and the negative contact pin and the negative connector respectively form air gaps with certain widths through the structural design of the contact pins and the connectors, so that air isolation is formed, and the effects of isolation protection and breakdown prevention are achieved. Meanwhile, the joint is processed into an inner layer and an outer layer, the inner layer is matched with the contact pin, the outer layer is contacted with air, an air gap with a certain width is formed between the inner layer and the outer layer, so that the metal piece contact pin and the retaining ring in the inner layer are isolated from the joint of the plastic piece in the outer layer by air, and the effects of isolation, protection and breakdown prevention are achieved. Meanwhile, the structure can also avoid that a large amount of water permeates into the connector to the contact position of the connector and the metal piece due to the fact that the plastic part material outside the connector absorbs water. Simultaneously, set up the stopper between waterproof circle and cable, when the nut was screwed up, the stopper was fastened the cable and is played waterproof solidus effect after receiving the extrusion of waterproof circle.
Advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a diagram illustrating a positive-negative electrode connector.
Fig. 2 is a finished view of the positive electrode connector.
Fig. 3 is a finished view of the negative connector.
Fig. 4 is an exploded view of the finished positive connector.
Fig. 5 is an exploded view of the negative connector product.
Fig. 6 is a cross-sectional view of the positive connector.
Fig. 7 is a cross-sectional view of the negative connector.
Fig. 8 is a structure view of a waterproof fixing wire.
In the figure: 101-positive electrode joint, 102-positive electrode pin, 103-retaining ring, 104-waterproof ring, 105-plug, 106-nut, 107-positive electrode cable, 108-O-ring, 109-first air gap, 110-second air gap, 201-negative electrode joint, 202-negative electrode pin, 203-retaining ring, 204-waterproof ring, 205-plug, 206-nut, 207-negative electrode cable, 209-third air gap, 210-fourth air gap.
Advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
Referring to fig. 1 to 3, the connector is divided into a positive connector and a negative connector. Referring to fig. 4, at the positive connector, the positive pin 102 is assembled with the retaining ring 103, or the positive pin 102 and the retaining ring 103 are integrally formed by punching and then embedded in the positive connector 101; the retaining ring 103 may be first installed in the positive terminal 101 and then inserted into the positive terminal 102. The positive pin 102 is a metal piece and the retaining ring 103 may be a non-conductive member. The retaining ring 103 is used for contacting the elastic part of the retaining ring 103 with the inside of the positive electrode connector 101 to form an inverted buckle, so that the positive electrode pin 102 is positioned. The positive pin 102 has a conductive function, and one end of the positive pin is responsible for being inserted into a pin of the other polarity, and the other end of the positive pin is responsible for being connected with a cable. The O-ring 108 is fitted over the opposite insertion end of the positive electrode tab 101, and the O-ring 108 serves to seal the positive electrode tab 101 and the negative electrode tab 201 when they are inserted into each other. The positive cable 107 is riveted to the cable insertion end of the positive pin 102. The waterproof ring 104 is nested on the positive cable 107 and the positive connector 101. The nut 106 is screwed to the positive connector 101. The plug 105 is arranged between the waterproof ring 104 and the positive cable 107, and the plug 105 is used for fastening the positive cable 107 after being extruded by the waterproof ring 104 when the nut 106 is screwed, so as to achieve a wire fixing effect. The positive electrode connector 101 and the nut 106 are plastic parts; the waterproof ring 104 and the O-shaped ring 108 are made of silica gel; the plug 105 is a rigid piece, such as a plastic or metal piece. Referring to fig. 5, at the negative connector, the assembly is substantially the same as that of the positive connector except that one O-ring is omitted, and thus, the description thereof is omitted. As can be seen from fig. 1 to 5, when the positive connector and the negative connector are inserted into each other, the end of the positive tab 101 is inserted into the negative tab 201, and the positive pin 102 of the positive tab 101 is inserted into the negative pin 202 of the negative tab 201.
Referring to fig. 6, the positive pin segment is the place with the greatest risk of high voltage breakdown, and the invention is provided with a breakdown prevention structure: the diameter of the positive pin 102 is locally reduced, and the gap between the positive pin 102 and the positive connector 101 is increased, so that a first air gap 109 is formed between the positive pin 102 and the positive connector 101, and the effects of isolation protection and breakdown prevention are achieved. The insertion end of the positive cable is also the place with the greatest risk of high-voltage breakdown, and the invention is provided with a breakdown prevention structure: the positive connector 101 is processed into an inner layer and an outer layer, the inner layer is matched with the positive pin 102, the outer layer is contacted with air, a second air gap 110 is formed between the inner layer and the outer layer, the positive pin 102 and the retaining ring 103 of the metal part in the inner layer are isolated from the positive connector 101 of the plastic part in the outer layer, and the effects of isolation protection and breakdown prevention are achieved. Meanwhile, the structure can also avoid that a large amount of water permeates into the connector to the contact position of the connector and the metal piece due to the fact that the plastic part material outside the connector absorbs water.
Referring to fig. 7, the negative electrode pin is the place where the high voltage breakdown risk is the greatest for the pin, and the invention sets the breakdown prevention structure here: the inner wall of the negative electrode connector 201 is thinned, the gap between the negative electrode connector 201 and the negative electrode pin 202 is increased, the negative electrode pin 202 is only partially connected with the plastic part of the negative electrode connector 201, and a third air gap 209 is formed in most of the area between the negative electrode pin 202 and the negative electrode connector 201, so that the effects of isolation protection and breakdown prevention are achieved. The inserting end of the cathode cable is also the place with the largest risk of high-voltage breakdown, and the invention is provided with a breakdown prevention structure: the negative electrode connector 201 is processed into an inner layer and an outer layer, the inner layer is matched with the negative electrode contact pin 202, the outer layer is contacted with air, a fourth air gap 210 is formed between the inner layer and the outer layer, so that the negative electrode contact pin 202 and the retaining ring 203 of the metal piece in the inner layer are isolated from the negative electrode connector 201 of the plastic piece in the outer layer, and the effects of isolation protection and breakdown prevention are achieved. Meanwhile, the structure can also avoid that a large amount of water permeates into the connector to the contact position of the connector and the metal piece due to the fact that the plastic part material outside the connector absorbs water.
Referring to fig. 8 in combination with fig. 6 and 7, the present invention provides a waterproof wire-fixing structure in both the positive connector and the negative connector. Referring to fig. 8, taking the positive connector as an example, a plug 105 is disposed between the waterproof ring 104 and the positive cable 107, and when the nut 106 is tightened, the plug 105 is pressed by the waterproof ring 104 and then fastens the positive cable 107, thereby playing a role of waterproof wire fixation. Similarly, a plug 205 is provided in the negative electrode connector to perform the same function.
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 person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. A breakdown-preventing and waterproof connector comprises a positive electrode connector, a positive electrode contact pin, a negative electrode connector and a negative electrode contact pin; the positive contact pin is embedded in the positive connector, and the negative contact pin is embedded in the negative connector; the method is characterized in that:
a first air gap is formed between the positive contact pin and the positive connector;
the positive electrode connector comprises a positive electrode connector inner layer and a positive electrode connector outer layer, the positive electrode connector inner layer is matched with the positive electrode contact pin, the positive electrode connector outer layer is in contact with air, and a second air gap is formed between the positive electrode connector inner layer and the positive electrode connector outer layer;
a third air gap is formed between the negative contact pin and the negative joint;
the negative electrode joint comprises a negative electrode joint inner layer and a negative electrode joint outer layer, the negative electrode joint inner layer is matched with the negative electrode contact pin, the negative electrode joint outer layer is in contact with air, and a fourth air gap is formed between the negative electrode joint inner layer and the negative electrode joint outer layer.
2. A break-through and waterproof connector as claimed in claim 1, wherein: the connector is divided into a positive connector and a negative connector; when the positive connector and the negative connector are oppositely inserted, the end part of the positive connector is inserted into the negative connector, and meanwhile, the positive contact pin in the positive connector is inserted into the negative contact pin in the negative connector.
3. A break-through and waterproof connector as claimed in claim 1, wherein: stopping rings are respectively arranged between the positive contact pin and the positive connector and between the negative contact pin and the negative connector, and the stopping rings are assembled with the positive contact pin and the negative contact pin or integrally formed; the elastic part of the retaining ring is contacted with the inner parts of the anode connector and the cathode connector to form an inverted buckle; the positive contact pin and the negative contact pin are metal pieces.
4. A break-through and waterproof connector as claimed in claim 1, wherein: the positive contact pin is riveted with the positive cable; and the negative contact pin is riveted with the negative cable.
5. The penetration-resistant and waterproof connector of claim 4, wherein: the positive cable and the positive joint are nested with a waterproof ring, and the positive joint is connected with the nut through threads; the negative pole cable and the negative pole connector are nested with a waterproof ring, and the negative pole connector is connected with the nut through threads.
6. A break-through and waterproof connector as claimed in claim 5, wherein: and plugs are respectively arranged between the positive cable and the waterproof ring and between the negative cable and the waterproof ring.
7. A penetration-resistant and waterproof connector as set forth in claim 6, wherein: the positive electrode connector, the negative electrode connector and the nut are plastic parts, and the plug is a hard part.
8. A penetration-resistant and waterproof connector as set forth in claim 6, wherein: the waterproof ring is made of a silica gel piece.
9. A break-through and waterproof connector as claimed in claim 2, wherein: the anode connector is sleeved with an O-shaped ring at one end which is oppositely inserted with the cathode connector, and the O-shaped ring is a silica gel piece.
CN202110616578.XA 2021-06-03 2021-06-03 Breakdown-preventing and waterproof connector Pending CN115441245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110616578.XA CN115441245A (en) 2021-06-03 2021-06-03 Breakdown-preventing and waterproof connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110616578.XA CN115441245A (en) 2021-06-03 2021-06-03 Breakdown-preventing and waterproof connector

Publications (1)

Publication Number Publication Date
CN115441245A true CN115441245A (en) 2022-12-06

Family

ID=84271870

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110616578.XA Pending CN115441245A (en) 2021-06-03 2021-06-03 Breakdown-preventing and waterproof connector

Country Status (1)

Country Link
CN (1) CN115441245A (en)

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PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20230720

Address after: No. 2, Xiabao Road, Yueqing Bay Port District, Yueqing, Wenzhou City, Zhejiang Province 325600

Applicant after: Zhejiang Zhengtai Xinhui Photovoltaic Co.,Ltd.

Address before: 325600 No. 192 Lane 22, Weisan Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province

Applicant before: ZHEJIANG XINHUI PHOTOVOLTAIC TECHNOLOGY CO.,LTD.

TA01 Transfer of patent application right