Conductive terminal and electric connector

Abstract

A conductive terminal comprises a fixing portion, a cable clamping portion formed by extending backwards from the fixing portion and a contact portion formed by extending forwards from the fixing portion, the contact portion comprises a plurality of contact arms, the fixing portion comprises a circular-ring-shaped base body, and the rear end of the circular-ring-shaped base body is folded along the radial outer side to form a barb portion. The utility model further discloses an electric connector.

Description

Technical Field

[0001] The present application relates to the field of electrical connectors, and in particular to a conductive terminal and an electrical connector. Background Art

[0002] Taiwan Patent Application No. 107139527 discloses a conductive terminal and an electrical connector therefor. The conductive terminal comprises a terminal body extending along a centerline; a contact portion disposed at one end of the terminal body in the direction of extension; and a lance portion disposed at the other end of the terminal body in the direction of extension. The contact portion includes a position-limiting portion comprising an annular band extending circumferentially from the inner circumference of the housing. The outer circumference of the annular band limits the position of the contact portion, allowing insertion of a plug terminal into the annular band; and an elastic contact portion disposed between the position-limiting portion and the connecting portion.

[0003] The annular band of the terminal extends forward of the contact portion to restrain the conductive terminal, preventing longitudinal displacement when the plug terminal is removed. However, this structural design increases the overall length of the conductive terminal, thereby increasing the length of the electrical connector. Furthermore, when this circular terminal is inserted into the housing and subjected to axial rotational force, the conductive terminal lacks a design to prevent it from being fixed in the terminal slot of the housing, making it prone to rotation and damaging the connector. Utility Model Content

[0004] In view of this, it is necessary to provide a conductive terminal and an electrical connector that can prevent rotation and have a smaller size.

[0005] In order to solve the above technical problems, the present application provides a conductive terminal, including a fixing portion, a cable clamping portion extending rearward from the fixing portion, and a contact portion extending forward from the fixing portion, the contact portion including a plurality of contact arms, the fixing portion including an annular base in a circular ring shape, and the rear end of the annular base is folded radially outward to form a barb portion.

[0006] Preferably, the conductive terminal is formed by stamping a metal plate, the annular base of the fixing portion is formed by curling both sides, and the outer periphery of the annular base is stamped outward to form a convex ring.

[0007] Preferably, the convex ring is provided on the front side and the rear side of the annular base to maintain the balance of the fixing part on the front and rear sides; the contact part is formed by extending forward from the front end part of the annular base, and the cable clamping part is formed by extending backward from the rear end part of the annular base. The area of ​​the connection between the contact part and the annular base is not greater than one half of the front end surface of the annular base, and the area of ​​the connection between the cable clamping part and the annular base is not greater than one half of the rear end surface of the annular base.

[0008] Preferably, a curling seam is formed on the annular base at a side opposite to the contact portion and the cable clamping portion, and the barbs are formed by bending radially outwards from the rear end of the annular base and located on both sides of the curling seam.

[0009] Preferably, the annular base is torn on a side opposite to the curling seam and bent into the annular base to form a closing piece that closes the inner space of the annular base. The closing piece can prevent the waterproof glue from overflowing to the side of the contact portion.

[0010] Preferably, the contact portion also includes an extended base connecting the annular base and the contact arm, the extended base is partially connected to the annular base, and the two side portions of the extended base are separated from the annular base to form a disconnection gap, and the three contact arms are respectively extended forward from the bottom and two side portions of the extended base.

[0011] Preferably, the contact arm includes a contact portion formed by bending toward the center of the circle and an outward-turned portion formed by folding outward from a front end edge of the contact portion.

[0012] In order to solve the above technical problems, the present application also provides an electrical connector, including several of the aforementioned conductive terminals, an insulating body and a shell for inserting the conductive terminals, the insulating body including several terminal slots running longitudinally through, and after the conductive terminals are inserted into the terminal slots, hard interference is generated between the barbed portion of the fixing portion and the inner wall surface of the terminal slot and they are fixed.

[0013] Preferably, the terminal slot includes a accommodating section and an insertion section located at the front end of the accommodating section, the inner diameter of the insertion section is smaller than the inner diameter of the accommodating section and a step portion is formed at the junction of the two, the front end of the contact arm is bent inward to form a contact portion and is folded radially outward from the end edge of the contact portion to form an outward turning portion, and the outward turning portion is located behind the step portion and is not exposed in the vertical projection plane of the insertion section.

[0014] Preferably, the front and rear ends of the insulating body protrude outward to form a front limiting protrusion and a rear limiting protrusion respectively, the outer shell includes a cavity for accommodating the insulating body and a limited end protruding inward from the rear end of the cavity, the limited end is limited between the front limiting protrusion and the rear limiting protrusion, and the electrical connector also includes a sealing ring, which is sleeved on the outside of the insulating body and limited to the front side of the front limiting protrusion.

[0015] The conductive terminal and electrical connector of the present application are formed by folding outward the rear end of the annular base of the fixed part of the conductive terminal to form a barb portion that extends beyond the outer surface of the annular base, and preventing the conductive terminal from rotating by generating hard interference between the barb portion and the inner wall surface of the terminal groove; at the same time, the barb portion can also provide a retaining force for the conductive terminal, avoiding the position of the conductive terminal from loosening when the connector is plugged in and out, thereby eliminating the annular band portion located in front of the contact arm in the prior art, and reducing the overall length of the conductive terminal and the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A three-dimensional assembly diagram of the electrical connector of this application;

[0018] Figure 2 A three-dimensional diagram of the conductive terminal of this application;

[0019] Figure 3 A three-dimensional view of the conductive terminal of the present application from another angle;

[0020] Figure 4 For the Figure 1 A cross-sectional view taken along the dashed line AA is shown.

[0021] Description of Reference Numerals

[0022] Conductive terminal 10; fixing portion 11; annular base 111; barb 112; protruding ring 113; sealing piece 114; cable clamping portion 12; bearing portion 121; curling portion 122; tail end 123; contact portion 13; extension base 131; contact arm 132; outward-turned portion 133; disconnection gap 134; insulating body 20; plug end 21; connecting end 22; terminal slot 23; accommodating section 231; insertion section 232; step 233; front limiting protrusion 24; rear limiting protrusion 25; housing 30; cavity 31; internal thread 32; limited end 33; sealing ring 40. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions and advantages of this application more clear, the technical solutions of this application will be described clearly and completely below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0024] See also Figure 1 、 Figure 4As shown, the electrical connector of the present application includes an insulating body 20 with a terminal groove 23 formed therethrough in the front-to-back direction, a plurality of conductive terminals 10 inserted into the insulating body 20, a shell 30 sleeved on the outside of the insulating body 20, and a sealing ring 40 sleeved on the outside of the insulating body 20.

[0025] Please continue reading Figure 2 、 Figure 3 、 Figure 4 As shown, the conductive terminal 10 includes a fixing portion 11 , a contact portion 13 extending forward from the fixing portion 11 , and a cable clamping portion 12 extending rearward from the fixing portion 11 .

[0026] The fixing portion 11 is an annular cylindrical structure, comprising an annular base 111, protruding rings 113 radially outwardly protruding from the front and rear sides of the annular base 111, and a plurality of barbs 112 bent from the rear end of the annular base 111. The annular base 111 is formed by cladding a sheet of metal, and the protruding rings 113 are formed by stamping the sheet metal before curling. The annular base 111 has a curling seam (unnumbered) formed on the side opposite the contact portion 13 and the cable clamping portion 12. The barbs 112 are formed by bending radially outwardly from the rear end of the annular base 111, located on both sides of the curling seam.

[0027] The cable clamping portion 12 is connected to a portion of the annular base 111. The barb portions 112 are preferably a pair, and the pair of barb portions 112 are spaced apart at 360-degree intervals at the position where the pair of barb portions 112 are connected to the annular base 111 and the cable clamping portion 12. The pair of barb portions 112 are symmetrical structures based on the central axis of the cable clamping portion 12, and the angle between the pair of barb portions 112 is not greater than the angle between one barb portion 112 and the central axis of the cable clamping portion 12. The cable clamping portion 12 includes a bearing portion 121 extending backward from a portion of the annular base 111, a curling portion 122 extending outward from the outer edge of the bearing portion 121, and a tail end 123 extending backward from the bearing portion 121. The curling portion 122 curls inward to squeeze the core wire of the cable and conduct it.

[0028] The contact portion 13 comprises an extended base 131 extending from the front end of the annular base 111, a plurality of contact arms 132 extending forward and branching from different positions of the extended base 131, and an outward-folding portion 133 formed by folding outward from the ends of the contact arms 132. The extended base 131 is an arc-shaped portion larger than one-half of a circle, and is separated from the annular base 111 by a gap 134 on either side. There are three contact arms 132, each of which is bent toward the center of the circle to form a contact portion 135. The outward-folding portion 133 is formed by folding outward from the ends of the contact portions 135.

[0029] The annular base 111 further includes a closing piece 114 that is torn from the annular base 111 and folded inwardly into the annular base 111 . The closing piece 114 closes the longitudinal space of the annular base 111 .

[0030] Please continue reading Figure 1 、 Figure 4 As shown, the insulating body 20 includes a plug-in end 21 at the front, a connecting end 22 at the rear, and several terminal slots 23 extending longitudinally through the insulating body 20. A front stopper protrusion 24 protrudes outward from the center of the insulating body 20, and a rear stopper protrusion 25 protrudes outward from the rear end of the insulating body 20. The terminal slots 23 include a receiving section 231 extending through the connecting end 22 and an insertion section 232 located at the front edge of the plug-in end 21. The inner diameter of the insertion section 232 is smaller than that of the receiving section 231, and a step 233 is formed at the junction of the two sections.

[0031] The housing 30 includes a cavity 31 for accommodating the insulating body 20, internal threads 32 formed on the inner wall of the cavity 31, and a restricted end 33 formed at the rear end of the cavity 31. The housing 30 is mounted externally of the insulating body 20, with the restricted end 33 being positioned between the front restricting protrusion 24 and the rear restricting protrusion 25. The sealing ring 40 is mounted externally of the insulating body 20, with its rear end being positioned in front of the front restricting protrusion 24.

[0032] After the cable clamping portion 12 of the conductive terminal 10 is riveted to the cable, it is inserted into the terminal slot 23 from the rear end of the insulating body 20. The outwardly folded front end of the contact arm 132 of the contact portion 13 is located within the step 233 on the rear side of the insertion section 232 of the terminal slot 23, preventing damage to the contact arm 132 by the inserted terminal. The annular base 111 of the fixing portion 11 is tightly secured to the inner wall of the receiving section 231 of the terminal slot 23. The hard interference between the outwardly folded barb 112 and the inner wall of the receiving section 231 prevents the conductive terminal 10 from rotating within the terminal slot 23.

[0033] The conductive terminal and electrical connector of the present application are configured such that the rear end of the annular base 111 of the fixing portion 11 of the conductive terminal 10 is folded outward to form a barb portion 112 that extends beyond the outer surface of the annular base 111. The barb portion 112 is hard-interfered with the inner wall surface of the terminal slot 23 to prevent the conductive terminal 10 from rotating. At the same time, the barb portion 112 can also provide a retaining force for the conductive terminal 10 to prevent the conductive terminal 10 from becoming loose when the connector is plugged in or out, thereby eliminating the annular band portion located in front of the contact arm in the prior art and reducing the overall length of the conductive terminal 10 and the electrical connector.

[0034] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A conductive terminal comprising a fixing portion, a cable clamping portion extending rearward from the fixing portion, and a contact portion extending forward from the fixing portion, wherein the contact portion comprises a plurality of contact arms, and the fixing portion comprises an annular base in the form of a circular ring, characterized in that: The rear end of the annular base is folded outwardly in the radial direction to form a barb portion.

2. The conductive terminal according to claim 1, wherein: The conductive terminal is formed by stamping a metal plate. The annular base of the fixing portion is formed by curling both sides. The outer periphery of the annular base is stamped outward to form a convex ring.

3. The conductive terminal according to claim 2, wherein: The convex ring is provided on the front side and the rear side of the annular base to maintain the balance of the fixing part on the front and rear sides; the contact part is formed by extending forward from the front end part of the annular base, and the cable clamping part is formed by extending backward from the rear end part of the annular base. The area of ​​the connection between the contact part and the annular base is not greater than one half of the front end surface of the annular base, and the area of ​​the connection between the cable clamping part and the annular base is not greater than one half of the rear end surface of the annular base.

4. The conductive terminal according to claim 3, wherein: The annular base is formed with a curling seam on a side opposite to the contact portion and the cable clamping portion. The barbs are formed by bending radially outwards from the rear end of the annular base and located on both sides of the curling seam.

5. The conductive terminal according to claim 4, wherein: The annular base is torn at a side opposite to the curling seam and bent into the annular base to form a closing piece that closes the inner space of the annular base. The closing piece can prevent the waterproof glue from overflowing to the side of the contact portion.

6. The conductive terminal according to claim 3, wherein: The contact portion also includes an extended base connecting the annular base and the contact arm. The extended base is partially connected to the annular base, and the two side portions of the extended base are separated from the annular base to form a disconnection gap. The three contact arms are respectively extended forward from the bottom and two side portions of the extended base.

7. The conductive terminal according to claim 6, wherein: The contact arm includes a contact portion bent toward the center of a circle and an outward-turned portion folded outward from a front end edge of the contact portion.

8. An electrical connector, characterized in that: It comprises several conductive terminals as described in claim 1, an insulating body and a shell for inserting the conductive terminals, the insulating body comprising several terminal slots running longitudinally through, and after the conductive terminals are inserted into the terminal slots, hard interference is generated between the barbed portion of the fixing portion and the inner wall surface of the terminal slots and they are fixed.

9. The electrical connector according to claim 8, wherein: The terminal slot includes a accommodating section and an insertion section located at the front end of the accommodating section. The inner diameter of the insertion section is smaller than the inner diameter of the accommodating section and a step portion is formed at the junction of the two. The front end of the contact arm is bent inward to form a contact portion and is folded radially outward from the end edge of the contact portion to form an outward-turned portion. The outward-turned portion is located behind the step portion and is not exposed in the vertical projection plane of the insertion section.

10. The electrical connector according to claim 9, wherein: The front and rear ends of the insulating body protrude outward to form a front limiting protrusion and a rear limiting protrusion respectively. The shell includes a cavity for accommodating the insulating body and a limited end protruding inward from the rear end of the cavity. The limited end is limited between the front limiting protrusion and the rear limiting protrusion. The electrical connector also includes a sealing ring, which is sleeved on the outside of the insulating body and limited to the front side of the front limiting protrusion.

Images