TWM623884U - Waterproof connector and signal terminal thereof - Google Patents

Abstract

The present invention relates to a waterproof connector and its signal terminal. It mainly includes one or more terminal grooves formed on a connector base for correspondingly setting more than one signal terminal; the terminal groove includes a blind hole portion and a through hole. a groove part, the signal terminal is inserted into the terminal groove from the front of the connector base, the signal terminal comprises an annular elastic contact part and a pin, the elastic contact part is suitable for the blind hole part of the terminal groove, the The pins pass through the bottom of the connector base through the slotted part; the aforementioned design can prevent moisture from infiltrating the bottom of the connector base, and the elastic contact part of the signal terminal has three contact springs arranged at equal angles, which can be matched with the corresponding The inserted male probe makes a three-point contact for good electrical contact.

Description

Waterproof connector and its signal terminal

This creation relates to a connector and its signal terminal, especially an electrical connector with waterproof effect and a signal terminal provided on it to enhance the electrical contact effect.

Electrical connectors that are generally used as charging interfaces on electric vehicles must not only meet the electrical characteristics requirements such as high power, but also have long-term outdoor exposure because they belong to on-board devices, so they also have relatively high requirements on weather resistance, such as waterproof and dustproof. , In terms of dust prevention, a dust cover is generally installed outside the charging connector to prevent the accumulation of flying dust, and the dust cover also has a basic waterproof function, but the effect is limited, and it still cannot completely block the infiltration of water. The waterproofness of the electrical connector itself is of great importance.

The existing charging connector integrates the power and signal transmission interface at the same time. Whether it is power or signal, it depends on the connection and transmission of many terminals on the connector. Generally, the way of installing signal terminals in a connector is mostly in the pre-connector. Set the terminal slot, and put the terminal into the terminal slot, but these terminal slots are in the form of through holes and penetrate the inside and outside of the connector. When the terminal is installed in the terminal slot, there is still a gap between the two. It is easy to enter the inner side of the connector through the terminal groove, and the inner side of the connector is usually the electrical space connected to the external wire. Once moisture penetrates, it may endanger the safety.

Therefore, it can be seen from the above that the waterproof measures of the existing charging connectors have not been fully extended, and further review is required to seek a feasible solution.

Therefore, the main purpose of the present invention is to provide a waterproof connector, which can effectively improve the waterproofness of the connector by improving the installation structure of the signal terminal.

The main technical means adopted to achieve the aforementioned purpose is to make the aforementioned waterproof connector include: a connector base having a connecting portion and a bottom, the connecting portion is formed with more than one terminal groove, and the terminal groove includes a blind hole part and a through-slot part, the through-slot part penetrates the bottom of the connector base; one or more signal terminals are arranged in the terminal slot of the connector base, and the signal terminal includes a ring-shaped elastic contact The elastic contact portion is located in the blind hole portion of the terminal slot, and the pin passes through the bottom of the connector base through the slot portion of the terminal slot in a matching size.

The aforementioned waterproof connector is formed with a specially designed terminal groove on the connecting part of the connector base, which provides a blind hole part to accommodate the elastic contact part of the signal terminal, and penetrates through the groove at the bottom of the connector base with a small area. Only the pin size of the signal terminal can be passed through the connector, so as to isolate the terminal groove and the bottom of the connector base to the greatest extent, so as to improve the waterproof effect.

Another object of the present invention is to provide a signal terminal, which has a special elastic contact structure and can form a good electrical contact with the correspondingly inserted male probe.

The technical means adopted to achieve the above-mentioned purpose is to make the signal terminal include: an elastic contact portion with an outer ring and an inner ring, and between the outer ring and the inner ring, three or more contact springs are arranged, and the contact springs The pieces extend toward an axial direction to form a contact point respectively; a pin is in the shape of a long and narrow piece, one end of which is connected with the inner ring of the elastic contact part.

The elastic contact portion of the signal terminal has more than three contact springs, and provides more than three contact points, so that it can form multi-point contact with the correspondingly inserted male probe to form a reliable and good electrical contact.

10: Connector base

11: Tank Chamber

12: Connection part

13: Terminal slot

131: Blind hole

132: Grooved part

14: Shallow groove

20: Signal terminal

21: Elastic contact part

211: Outer Ring

212: inner ring

213~215: Contact Reed

22: pin

220: convex part

30: Sealing layer

FIG. 1 is an exploded view of a preferred embodiment of the invention.

FIG. 2 is an exploded view of a preferred embodiment of the invention.

FIG. 3 is a three-dimensional cross-sectional view of a preferred embodiment of the invention.

FIG. 4 is a perspective view of a signal terminal according to a preferred embodiment of the invention.

5 is a front plan view of a signal terminal according to a preferred embodiment of the invention.

FIG. 6 is a plan cross-sectional view of a preferred embodiment of the invention.

FIG. 7 is a plane combined cross-sectional view of a preferred embodiment of the invention.

Please refer to FIG. 1 for a preferred embodiment of the electrical connector of the present invention, which includes a connector base 10 and one or more signal terminals 20 ; wherein the connector base 10 has a groove chamber 11 And a bottom, the groove chamber 11 is provided with a connecting part 12, in this embodiment, the connector base 10 is basically a cylindrical shape, the groove chamber 11 is also a matching cylindrical space, the connecting part 12 is coaxially formed in the groove chamber 11 , and a ring groove is formed between the connecting portion 12 and the inner wall of the groove chamber 11 .

Please refer to FIG. 2 , the connecting portion 12 of the connector base 10 is formed with one or more terminal grooves 13 for accommodating the signal terminals 20 . In this embodiment, the connecting portion 12 is formed with a plurality of terminal slots 13 . The terminal slots 13 are respectively provided with a signal terminal 20 in each of the terminal slots 13 . Please refer to FIG. 3 , the terminal slot 13 includes a circular hole-shaped blind hole portion 131 and a rectangular through-hole portion 132 , and the through-slot portion 132 is formed at a hole edge of the blind hole portion 131 . The through-slot portion 132 has a slot length, a slot width and a slot depth, the slot length is smaller than the aperture of the blind hole portion 131 , the slot width is always smaller than the slot length and is in the shape of a slot, and the slot depth is larger than the blind hole portion The depth of the hole 131 , specifically, the blind hole portion 131 does not penetrate through the bottom of the connector base 10 , and the through-groove portion 132 penetrates through the bottom of the connector base 10 .

Please refer to FIG. 4 , the signal terminal 20 includes an elastic contact portion 21 and a pin 22 . The elastic contact portion 21 has an outer ring 211 and an inner ring 212 , and a space between the outer ring 211 and the inner ring 212 is provided. There are more than three contact springs, and the contact springs extend toward an axial direction to form a contact point respectively. Please refer to FIG. 5 . In this embodiment, the elastic contact portion 21 is provided with three contact springs 213 to 215 between the outer ring 211 and the inner ring 212 , and the three contact springs 213 to 215 are equidistant from each other. They are arranged at equal angles, and are respectively extended and bent toward the axial direction to form a contact point.

Still referring to FIG. 4 , the pin 22 of the signal terminal 20 is in the shape of an elongated sheet, one end of which is connected to the inner ring 212 of the elastic contact portion 21 , and the other end extends in a length direction. The thickness of 22 matches the groove width of the through-groove portion 132, and its width is slightly smaller than the groove length of the through-groove portion 132. One end of the pin 22 close to the inner ring 212 forms a convex portion 220 on the upper and lower sides, respectively. The width of the foot 22 at the protruding portion 220 is equal to or slightly larger than the groove length of the through-groove portion 132 .

Please refer to FIG. 1 and FIG. 6 , the signal terminal 20 is inserted into the corresponding terminal slot 13 on the connecting portion 12 from the front of the connector base 10 (opposite the direction of the bottom of the connector base 10 ) , wherein the elastic contact portion 21 of the signal terminal 20 is located in the blind hole portion 131 of the terminal slot 13 , and the pin 22 penetrates out of the bottom of the connector base 10 through the slot portion 132 . The pin 22 is up and down The convex portion 220 on the side will press or sink into the two opposite groove walls of the corresponding position of the through-groove portion 132, so that the signal terminal 20 can be fixed in the terminal groove 13. The through-grooves 132 are filled in corresponding positions, thereby effectively isolating the bottom of the connector base 10 from the outside.

In order to further ensure the waterproof effect of the present invention, the connector base 10 is further provided with a sealing structure at the bottom thereof. Please refer to FIG. 7 . The sealing layer 30 is disposed on the outer side of the bottom of the connector base 10 after the signal terminal 20 is installed in the connector base 10 and its pins 22 pass through the bottom of the connector base 10, so as to completely seal the connector base 10. The possible gaps between the pins 22 and the through-grooves 132 further improve the waterproof effect. For the convenience of disposing the sealing layer 30 , the connector base 10 covers all the signal terminals 20 on the outer side of the bottom of the connector base 10 . A shallow groove 14 (please refer to FIG. 6 ) is formed in the area where the pins 22 pass through, and the sealing layer 30 is disposed in the shallow groove 14 , and the sealing layer 30 may be formed of sealing glue.

It can be seen from the above that in this invention, a special terminal slot is formed on the connecting part of the connector base, and the installation method of the signal terminal is inserted from the front, so that the elastic contact part and the pin of the signal terminal are respectively matched and accommodated in the terminal. Between the blind hole part of the slot and the through slot part, the pins pass through the bottom of the connector base through the through slot part. The above design can effectively prevent moisture from infiltrating through the terminal slot. For example, a seal is further provided at the bottom of the connector base. layer, you can completely prevent moisture from passing through the terminal groove to the bottom of the connector base.

Furthermore, the elastic contact portion of the signal terminal installed on the connector base has more than three contact springs, which can form multi-point electrical contact with the correspondingly inserted male end probes, in addition to forming a reliable and good electrical contact. In addition, it also ensures the normal transmission of the signal.

10: Connector base

11: Tank Chamber

12: Connection part

13: Terminal slot

20: Signal terminal

21: Elastic contact part

22: pin

Claims (8)

A waterproof connector, comprising: a connector base with a connecting portion and a bottom, the connecting portion is formed with more than one terminal slot, the terminal slot includes a blind hole portion and a through-slot portion, the through-slot portion The part runs through the bottom of the connector base; more than one signal terminal is set in the terminal groove of the connector base, the signal terminal includes a ring-shaped elastic contact part and a pin, the elastic contact part It is located in the blind hole part of the terminal groove, the elastic contact part has an outer ring and an inner ring, there are more than three contact springs between the outer ring and the inner ring, and the contact springs extend toward an axial direction to form a contact point respectively; the pin passes through the bottom of the connector base through the slot part of the terminal slot with matching size; connected. According to the waterproof connector of claim 1, the blind hole part of the terminal slot is in the shape of a round hole, the through slot part is in the shape of a rectangle, the through slot part is formed at a hole edge of the blind hole part, and the through slot The slot has a slot length, a slot width and a slot depth, the slot length is smaller than the aperture of the blind hole portion, the slot width is always smaller than the slot length and is in the shape of a slot, and the slot depth is greater than the hole depth of the blind hole portion. According to the waterproof connector of claim 1, the other end of the signal terminal extends in a length direction, the thickness of the pin matches the groove width of the through-groove portion, and the width is smaller than the groove length of the through-groove portion. One end of the foot close to the inner ring forms a convex portion on the upper and lower sides respectively, and the width of the pin at the convex portion is equal to or slightly larger than the groove length of the through-groove portion. The waterproof connector according to claim 1, the connector base is in a cylindrical shape and has a groove chamber, the groove chamber is a matching cylindrical space, the connecting part is coaxially formed in the groove chamber, the A ring groove is formed between the connecting part and the inner wall of the groove. The waterproof connector according to any one of claims 1 to 4, a sealing layer is provided on the outer side of the bottom of the connector base. A signal terminal, comprising: an elastic contact part with an outer ring and an inner ring, more than three contact springs are arranged between the outer ring and the inner ring, and the contact springs extend toward an axial direction to form A contact point; a pin, which is in the shape of a long and narrow sheet, one end of which is connected with the inner ring of the elastic contact part. According to the signal terminal of claim 6, the elastic contact portion is provided with three contact springs between the outer ring and the inner ring, and the three contact springs are arranged at equal distances and at equal angles, and are respectively oriented toward the axial center. Extend and bend to form a point of contact. According to the signal terminal according to claim 6 or 7, the pin is in the shape of a long and narrow sheet, one end of which is connected to the inner ring of the elastic contact portion, and a convex portion is formed on the upper and lower sides of the end respectively. The other end of the foot extends in a lengthwise direction.

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