electrical connectors

Abstract

The present invention provides an electrical connector comprising an insulating body, at least one set of conductive terminals retained within the insulating body, and a shielding housing. The insulating body comprises a base and a tongue protruding from the front of the base. Each conductive terminal comprises a contact portion protruding from the tongue, a fixed portion retained within the insulating body, and a tail portion at its rear end for electrical connection to an external circuit board. The shielding housing comprises a forwardly open receiving space within which the tongue protrudes. The electrical connector further comprises a reinforcement member secured to the rear of the shielding housing. The electrical connector of the present invention exhibits excellent resistance to push-on forces.

Description

Technical Field

[0001] The present invention relates to an electric connector, in particular to an electric connector with good pushing and pressing resistance. Background Art

[0002] The Universal Serial Bus (USB) interface, as a standard input / output interface, has been widely used in the design of many electronic devices. When a USB device is not removed after use on an electronic product, if the electronic product is stored or moved, it is easy for the USB device to be subjected to multi-directional impact forces, thereby causing damage to the USB device. A traditional USB electrical connector includes an insulating body, a plurality of conductive terminals fixed in the insulating body, and a shielding shell shielding the insulating body. However, when a traditional USB electrical connector is subjected to multi-directional impact forces, the shielding shell is prone to deformation or disintegration. Under the action of a large external force, the shielding shell is also prone to deformation together with the insulating body, resulting in failure of the connection between the conductive terminals and the circuit board.

[0003] In view of this, it is necessary to improve the existing electrical connector to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide an electrical connector with better push-pressure resistance.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides an electrical connector, which includes an insulating body, at least one group of conductive terminals fixed on the insulating body and a shielding shell, the insulating body has a base and a tongue plate protruding from the front side of the base, each of the conductive terminals has a contact portion protruding from the surface of the tongue plate, a fixed portion fixed in the insulating body and a tail portion located at its rear end for electrical connection to an external circuit board, the shielding shell has a receiving space open to the front, the tongue plate protrudes from the receiving space, and the electrical connector also includes a reinforcement fixed to the rear of the shielding shell.

[0006] As a further improvement of the present invention, the electrical connector also has a fixed shell fixed to one side of the shielding shell, the fixed shell has at least a pair of wings for being installed on an external circuit board, the fixed shell includes a main body and an extension portion extending backward from the main body as a whole, the main body and the shielding shell are fixed and cover the upper side of the tongue plate, and the extension portion covers the upper side of the base.

[0007] As a further improvement of the present invention, the shielding shell has a top wall, a bottom wall and a pair of side walls connecting the top wall and the bottom wall. The insulating body also has a pair of clamping grooves, and the rear end of the bottom wall is formed with a first stop portion that is bent and extends into the corresponding clamping groove.

[0008] As a further improvement of the present invention, the extension portion has a pair of buckling portions located at its bottom for grabbing the base portion, the top wall is provided with a pair of elastic arms, and the main body is provided with corresponding grooves for avoiding the elastic arms.

[0009] As a further improvement of the present invention, the reinforcement has a rear cover plate covering the rear side of the shielding shell and a pair of side cover plates relatively arranged on both sides of the rear cover plate. The pair of side cover plates are respectively fixedly connected to the shielding shell, and the push-pressure resistance of the electrical connector is not less than 40 kilograms.

[0010] As a further improvement of the present invention, the rear cover plate has a matching portion located in the middle portion thereof in the transverse direction and fixed to the insulating body.

[0011] As a further improvement of the present invention, the reinforcement has at least one pair of wings located on both sides thereof in the transverse direction, so as to be combined with the wings of the fixed shell to jointly install the electrical connector on the circuit board, and to ensure that the electrical connector has a push-pressure resistance of not less than 40 kilograms.

[0012] As a further improvement of the present invention, the shielding shell further has a second stopping portion protruding backward to limit the reinforcement.

[0013] As a further improvement of the present invention, the reinforcement includes a lower cover plate, a pair of side cover plates located on both sides of the lower cover plate in the transverse direction, and a rear cover plate located on the rear side of the lower cover plate. The rear cover plate is integrally connected to the lower cover plate and the side cover plates to cover the four sides of the shielding shell. The pair of wings of the reinforcement are formed by bending and extending from the side cover plates on the corresponding sides.

[0014] As a further improvement of the present invention, the conductive terminals include a group of first conductive terminals and a group of second conductive terminals, each first conductive terminal having a first contact portion protruding from the tongue plate and being curved, and each second conductive terminal having a second contact portion protruding from the tongue plate and being straight, in the front-to-back direction, the second contact portion is located in front of the first contact portion, the tail portion extends backward from the top of the fixed portion and is exposed to the outside of the base, and the tail portion is curved to elastically contact the circuit board in a solder-free manner.

[0015] The electrical connector of the present invention enhances the structural strength of the shielding shell by means of the reinforcing piece fixed to the rear portion of the shielding shell, thereby improving the pushing and pressing resistance of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional assembly diagram of the first embodiment of the electrical connector of the present invention.

[0017] Figure 2 yes Figure 1 Another view of the electrical connector shown.

[0018] Figure 3 yes Figure 1 An exploded perspective view of the electrical connector shown.

[0019] Figure 4 yes Figure 3 Another view of the electrical connector shown.

[0020] Figure 5 yes Figure 3 A perspective exploded view of the conductive terminals and the insulating body in the electrical connector is shown.

[0021] Figure 6 yes Figure 1 A side view of the electrical connector is shown.

[0022] Figure 7 yes Figure 1 A cross-sectional view of the electrical connector shown.

[0023] Figure 8 It is a three-dimensional assembly diagram of the second embodiment of the electrical connector of the present invention.

[0024] Figure 9 yes Figure 8 A partially exploded view of the electrical connector shown.

[0025] Figure 10 2 is a three-dimensional assembly diagram of a third embodiment of the electrical connector of the present invention.

[0026] Figure 11 yes Figure 10 Another view of the electrical connector shown.

[0027] Figure 12 yes Figure 11 A perspective view of the reinforcement member of the electrical connector shown. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Please refer to Figures 1 to 7 The first embodiment of the electrical connector 100 of the present invention is shown. The electrical connector 100 is used to be installed on an external circuit board (not shown), and includes an insulating body 1 , at least one set of conductive terminals 2 fixed to the insulating body 1 , and a shielding shell 3 .

[0030] Please refer to Figures 1 to 6As shown, the insulating body 1 has a base 11 and a tongue plate 12 protruding from the front side of the base 11. In this embodiment, the tongue plate 12 is integrally extended forward from the front end surface of the base 11, and in the height direction, the upper and lower surfaces of the tongue plate 12 are both located between the upper and lower surfaces of the base 11.

[0031] The base 11 comprises a base portion 112 and a mounting portion 113 extending rearward from the base portion 112. The mounting portion 113 comprises a support plate 1131 extending in a transverse direction and a pair of extension arms 1132 disposed at both ends of the support plate 1131 in the transverse direction. The support plate 1131 and the base portion 112 are spaced apart in the front-to-back direction to form a notch 1133 therebetween. Figure 7 As shown, the bottom surface of the mounting portion 113 is located above the bottom surface of the tongue plate 12. Furthermore, in a preferred embodiment of the present invention, the bottom surface of the mounting portion 113 is located above the top surface of the tongue plate 12 to reduce the space occupied by the external circuit board and save installation space.

[0032] The support plate 1131 is provided with a plurality of receiving slots 1134 arranged side by side in a transverse direction. Each receiving slot 1134 is upwardly open and separated by two adjacent partitions 1135. In this embodiment, the partitions 1135 extend rearward beyond the rear end of the support plate 1131 and terminate at the plane of the rear end of the extension arm 1132.

[0033] In addition, the base 11 also has a pair of positioning protrusions 114 located on either side of the base 112 in the transverse direction. The positioning protrusions 114 protrude outward in the transverse direction from the two side surfaces of the base 112. Furthermore, in this embodiment, the base 11 also has a pair of slots 115 located on either side of the base 112 in the transverse direction. The slots 115 are located at the intersection of the extension arm 1132 and the base 112 on the corresponding side and are recessed from top to bottom.

[0034] The base portion 112 has a plurality of fixing grooves 1121 arranged in the transverse direction, a limiting wall 1123 located at the front side of the fixing groove 1121, and a limiting groove 1124 located at the rear side of the fixing groove 1121. The fixing groove 1121 extends in the height direction and is open upward and forward. The limiting wall 1123 partially blocks the fixing groove 1121 at the front side, and the limiting wall 1123 is intermittently arranged to form an opening 1125 connected to the corresponding fixing groove 112. The limiting groove 1124 is recessed on the upper side of the base portion 112 and is arranged one-to-one with the fixing groove 1121. In this embodiment, the number of the fixing grooves 1121 is four. The limiting groove 1124 is arranged one-to-one with the receiving groove 1134 and is aligned along the front-to-back direction.

[0035] Please refer to Figures 1 to 7 As shown, each of the conductive terminals 2 has a contact portion 21 protruding from the surface of the tongue plate 12 , a fixing portion 22 retained in the insulating body 1 , and a tail portion 23 at its rear end for electrically connecting to an external circuit board.

[0036] In the present invention, the tail portion 23 extends horizontally backward from the fixing portion 22 and is exposed outside the base portion 11 , and the tail portion 23 is curved to elastically contact the circuit board in a solder-free manner.

[0037] Specifically, in this embodiment, the conductive terminals 2 include a set of first conductive terminals 2a and a set of second conductive terminals 2b. Each first conductive terminal 2a has a curved first contact portion 21a protruding from the tongue plate 12, and each second conductive terminal 2b has a straight second contact portion 21b protruding from the tongue plate 12. In the front-to-back direction, the second contact portion 21b is located in front of the first contact portion 21a. In this way, high-speed signal transmission is achieved through the second set of conductive terminals 2b. Furthermore, there are four first conductive terminals 2a and five second conductive terminals 2b.

[0038] Furthermore, each tail portion 23 has a downwardly arched abutment portion 231 for elastically contacting the circuit board. In the front-to-back direction, the abutment portion 231a of the first conductive terminal 2a is located behind the abutment portion 231b of the second conductive terminal 2b. In the free state (with the abutment portions 231 not abutting the circuit board), the abutment portion 231a of the first conductive terminal 2a is located below the abutment portion 231b of the second conductive terminal 2b in the height direction.

[0039] Each of the conductive terminals 2 further includes a connecting portion 24 connecting the top of the fixing portion 22 to the tail portion 23 . The connecting portion 24 of the first conductive terminal 2 a extends in the front-to-back direction and is confined within the corresponding limiting groove 1124 and receiving groove 1134 of the insulating body 1 .

[0040] The fixing portion 22 of each conductive terminal 2 in the first conductive terminals 2a extends in the vertical direction, and the fixing portion 22 of each conductive terminal 2 in the second conductive terminals 2b is L-shaped, and each of the second conductive terminals 2b also has a connecting portion 25 located between its second contact portion 21b and its fixing portion 22, and the width of the connecting portion 25 in the lateral direction is smaller than the width of its fixing portion 22.

[0041] In this embodiment, the first conductive terminals 2a are assembled from top to bottom within the insulating body 1 and secured in corresponding fixing slots 1121 of the insulating body 1 via their fixing portions 22. The second conductive terminals 2b are embedded within the insulating body 1, and the tongue plate 12 of the insulating body 1 is provided with a plurality of through-holes 121 extending vertically therethrough. These through-holes 121 correspond to the respective conductive terminals 2 in the second conductive terminals 2b, partially exposing the conductive terminals 2. Furthermore, in this embodiment, a row of these through-holes 121 is provided near the front end of the tongue plate 12, with the second contact portions 21b of the second conductive terminals 2b correspondingly exposed at these through-holes 121.

[0042] Please refer to Figures 1 to 4 Combined with Figure 6 、 Figure 7 As shown, the shielding shell 3 has a receiving space 30 that is open forward, and the tongue plate 12 protrudes into the receiving space 30. Specifically, the shielding shell 3 has a top wall 31, a bottom wall 32, and a pair of side walls 34 connecting the top wall 31 and the bottom wall 32. The top wall 31, the bottom wall 32, and the pair of side walls 33 are connected to form the receiving space 30.

[0043] The insulating body 1 further has a pair of retaining grooves 1126 , which are recessed at the bottom of the base portion 112 . A first stopper 321 is formed at the rear end of the bottom wall 32 and is bent and extended into the corresponding retaining grooves.

[0044] The top wall 31 extends rearward so that its rear end abuts the front end of the base portion 112. The tail portion 23 of the conductive terminal 2 protrudes behind the rear end of the bottom wall 32. In this embodiment, the bottom wall 32 further has a second stop portion 322 that extends rearward beyond the rear end of the base portion 112.

[0045] Furthermore, each side wall 34 has a positioning groove 341 formed by recessing forward from its rear end surface and a first engaging portion 342 located in front of the positioning groove 341. The pair of positioning protrusions 114 of the base 11 are inserted forward into the corresponding positioning groove 341. In this embodiment, the first engaging portion 342 is a protruding structure protruding from the outside of the corresponding side wall 34. In other embodiments, the first engaging portion 342 can also be a recessed structure recessed from the outside of the corresponding side wall 34.

[0046] Also, please refer to Figures 1 to 7 As shown, the electrical connector 100 also has a fixed shell 4 fixed to one side of the shielding shell 3 and a reinforcement 5 fixed to the rear of the shielding shell 3. The fixed shell 4 has at least a pair of wings 101 for installation on an external circuit board, and each of the wings 101 is provided with a mounting hole for installation on an external circuit board.

[0047] The fixed housing 4 includes a main body 41 and an extension 42 integrally extending rearward from the main body 41. The main body 41 is fixed to the shielding housing 3 and covers the upper side of the tongue plate 12. In a preferred embodiment of the present invention, the main body 41 is welded to the shielding housing 3. Furthermore, the main body 41 is provided with a corresponding clearance slot 411 for accommodating the elastic arm 301. The extension 42 covers the upper side of the base 11 and has a pair of latching portions 421 at its bottom for latching onto the base 11. In this embodiment, the extension 42 also has a pair of tabs 422 that bend downwardly and extend to insert into corresponding slots 115. The tabs 422 are located on either side of the extension 42 in the transverse direction and are located in front of the latching portions 421 in the front-to-back direction.

[0048] The tail portion 23 is located within the shielding range of the fixed shell 4 in the front-to-back direction. Specifically, the tail portion 23 is exposed to the rear side of the shielding shell 3 and is downwardly exposed within the shielding range below the extension portion 42 of the fixed shell 4. That is, when viewed from above the electrical connector 100, the tail portion 23 is not exposed outward, so that the fixed shell 4 can well shield the conductive terminal 2, absorb external electromagnetic waves, and suppress its own electromagnetic waves, thereby achieving the function of preventing electromagnetic interference.

[0049] like Figures 2 to 4 Combined with Figure 6 and Figure 7As shown, in this embodiment, the reinforcement 5 has a rear cover plate 51 covering the rear side of the shielding shell and a pair of side cover plates 52 relatively arranged on both sides of the rear cover plate 51, and the pair of side cover plates 52 are respectively fixedly connected to the shielding shell 3, and when the electrical connector 100 is subjected to a pushing force in the docking direction, the pushing resistance of the electrical connector 100 when subjected to an external pushing force is enhanced to not less than 40 kilograms, that is, when the pushing force applied by the outside is less than or equal to 40 kilograms, it will not affect the electrical connector 100.

[0050] Furthermore, the rear cover plate 51 has a mating portion 511 located in the middle portion thereof in the transverse direction and fixed to the insulating body 1, and the mating portion 511 extends in the same direction as the side cover plate 52. Specifically, the mating portion 511 is a sheet-like structure formed by bending forward and extending from the plate body 510 of the rear cover plate 51. In the embodiment shown in the present invention, the mating slot 1127 can be a multi-directional open structure that is open downward and backward; in other embodiments, the mating slot 1127 can also be a unidirectional open structure that is only open backward. In this case, the mating portion 511 is inserted forward and confined in the mating slot 1127. Figure 7 As shown, the second stop portion 322 protrudes backward and has its rear end face located behind the front surface of the rear cover plate 51. In a preferred embodiment, the second stop portion 322 is located directly below the rear cover plate 51 to limit the rear cover plate 51 at the lower side.

[0051] When the electrical connector 100 is subjected to an external pushing force, the shielding shell 3 is the first to bear the pushing force. With the support of the reinforcement 5, the shielding shell 3 can maintain its normal shape and avoid deformation and disintegration. When the pushing force gradually increases, the shielding shell 3 gradually begins to generate a twisting and rotating deformation force, thereby driving the reinforcement 5 to begin to have a twisting and rotating deformation force. Since the second stop portion 322 is located directly below the rear cover plate 51, the second stop portion 322 can provide a stopping and limiting effect on the reinforcement 5 at this time. Therefore, the second stop portion 322 provides an anti-deformation force to the reinforcement 5, thereby enhancing the ability to resist the pushing force.

[0052] Each of the side cover plates 52 has a second engagement portion 521 that engages with the corresponding first engagement portion 342 of the shielding shell 3. In this embodiment, the reinforcement member 5 is mounted to the rear side of the shielding shell 3 from the rear to the front, and the engagement portion 511 is inserted forward into the engagement slot 1127. The side cover plates 52 are engaged with the shielding shell 3 through the engagement of the second engagement portion 521 with the first engagement portion 342. Simultaneously, the side cover plates 52 are further engaged with the side walls 34 of the shielding shell 3 by welding. Of course, in other embodiments of the present invention, the side cover plates 52 may be secured to the shielding shell 3 solely through either the second engagement portion 521 or welding.

[0053] In the present invention, the shielding shell 3 is not provided with fixing feet for engaging and fixing with the external circuit board, but is fixedly installed on the circuit board through the wings 101 of the fixed shell 4 (or the fixed shell 4 and the reinforcement 5), thereby increasing the bonding force between the electrical connector 100 and the circuit board.

[0054] In addition, if Figure 2 、 Figure 4 and Figure 7 As shown, in the present invention, an insulating member 6 is provided inside the extension portion 42 of the fixed housing 4, and the insulating member 6 completely covers the tail portion 23 from above. In this embodiment, the insulating member 6 is sheet-shaped and is attached to the inner side of the extension portion 42 of the fixed housing 4.

[0055] like Figures 8 and 9 FIG. 2 shows a second embodiment of an electrical connector 100 ′ according to the present invention. The basic components and structure of the electrical connector 100 ′ are the same as those of the electrical connector 100 in the first embodiment, including an insulating body 1 ′, at least one set of conductive terminals 2 ′, a shielding housing 3 ′, a fixed housing 4 ′, and a reinforcement member 5 ′ covering the insulating body 1 ′. Other identical structures are not described in detail here, and only the differences are described below.

[0056] In this embodiment, the basic structure of the reinforcement member 5' is the same as that of the reinforcement member 5 in the first embodiment. The difference is that the reinforcement member 5' also has at least one pair of wings 101' located on either side of it in the transverse direction. These wings 101' are used to combine with the corresponding wings 101' of the fixed housing 4' to mount the electrical connector 100' on the external circuit board, ensuring that the electrical connector 100' can withstand a force of no less than 40 kg in the mating direction. In addition, each side wall 34' of the shielding housing 3' is bent to form a second stop 343' that abuts against the insulating body 1'.

[0057] like Figures 10 to 12FIG. 1 is a third embodiment of an electrical connector 100 ″ according to the present invention. The basic composition and structure of the electrical connector 100 ″ are the same as those of the electrical connector 100 ″ according to the first embodiment, and include an insulating body 1 ″, at least one set of conductive terminals 2 ″, a shielding housing 3 ″ shielding the insulating body 1 ″, a fixed housing 4 ″, and a reinforcement member 5 ″. Other identical structures are not described in detail here, and only the differences are described below.

[0058] In this embodiment, similar to the second embodiment, the reinforcement member 5" also has a pair of wings 101" located on both sides thereof in the transverse direction, which are combined with the wings 101" of the fixed housing 4" to jointly install the electrical connector 100" on the external circuit board, and ensure that the electrical connector 100" can withstand a force of not less than 40 kilograms in the mating direction.

[0059] In addition, the fixed shell 4" covers one side of the shielding shell 3" in the height direction, and the reinforcement 5" covers the other side of the shielding shell 3" in the height direction. Specifically, the reinforcement 5" is formed by metal powder injection molding, and includes a lower cover plate 53", a pair of side cover plates 52" located on both sides of the lower cover plate in the transverse direction, and a rear cover plate 51" located on the rear side of the lower cover plate 53". The rear cover plate 51" is integrally connected to the lower cover plate 53" and the side cover plates 52" to cover the four sides of the shielding shell 3". The pair of wings 101" of the reinforcement 5" are formed by bending and extending from the side cover plates 52" on the corresponding sides.

[0060] Meanwhile, in this embodiment, the base 11 ″ of the insulating body 1 ″ has a protrusion 116 ″ protruding downward, and the lower cover plate 53 ″ is provided with a positioning hole 531 ″ for accommodating and limiting the protrusion 116 ″.

[0061] The electrical connector 100, 100', 100" of the present invention enhances the structural strength of the shielding shell by means of reinforcement members 5, 5', 5" fixed to the rear of the shielding shell 3, 3', 3", thereby improving the push-pressure resistance of the electrical connector 100, 100', 100"; and is installed on an external circuit board by means of a fixed shell 4, 4', 4" fixed to one side of the shielding shell 3, 3', 3", so that the installation is more secure.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An electrical connector comprising an insulating body, at least one set of conductive terminals retained by the insulating body, and a shielding housing, the insulating body having a base and a tongue protruding from a front side of the base, each conductive terminal having a contact portion protruding from a surface of the tongue, a fixing portion retained within the insulating body, and a tail portion at a rear end thereof for electrical connection to an external circuit board, the shielding housing having a forwardly open receiving space, the tongue protruding from the receiving space, and characterized in that: The electrical connector also includes a reinforcement fixed to the rear of the shielding shell, the reinforcement having a rear cover plate covering the rear side of the shielding shell and a pair of side cover plates oppositely arranged on both sides of the rear cover plate, the pair of side cover plates being respectively welded to the shielding shell, and the rear cover plate having a mating portion located in the middle portion thereof in the transverse direction and fixed to the insulating body.

2. The electrical connector according to claim 1, wherein: The electrical connector also has a fixed shell fixed to one side of the shielding shell, the fixed shell has at least a pair of wings for being installed on an external circuit board, the fixed shell includes a main body and an extension portion extending backward from the main body as a whole, the main body and the shielding shell are fixed and cover the upper side of the tongue plate, and the extension portion covers the upper side of the base.

3. The electrical connector according to claim 2, wherein: The shielding shell has a top wall, a bottom wall and a pair of side walls connecting the top wall and the bottom wall. The insulating body also has a pair of clamping grooves. The rear end of the bottom wall is formed with a first stop portion that is bent and extends into the corresponding clamping groove.

4. The electrical connector according to claim 3, wherein: The extension portion has a pair of buckling portions located at the bottom thereof for grabbing the base portion, the top wall is provided with a pair of elastic arms, and the main body portion is correspondingly provided with a paving groove for avoiding the elastic arms.

5. The electrical connector according to claim 1, wherein: The electrical connector has a push-pressure resistance of not less than 40 kg.

6. The electrical connector according to claim 2, wherein: The reinforcement has at least one pair of wings on both sides thereof in the transverse direction, which are combined with the wings of the fixed housing to jointly mount the electrical connector on the circuit board, and ensure that the electrical connector has a push-pressure resistance of not less than 40 kg.

7. The electrical connector according to claim 5 or 6, wherein: The shielding shell further has a second stopper protruding backwards to limit the reinforcement.

8. The electrical connector according to claim 6, wherein: The reinforcement includes a lower cover plate, a pair of side cover plates located on both sides of the lower cover plate in the transverse direction, and a rear cover plate located on the rear side of the lower cover plate. The rear cover plate is integrally connected to the lower cover plate and the side cover plates to cover the four sides of the shielding shell. The pair of wings of the reinforcement are formed by bending and extending from the side cover plates on the corresponding sides.

9. The electrical connector according to any one of claims 1 to 6, wherein: The conductive terminals include a group of first conductive terminals and a group of second conductive terminals. Each first conductive terminal has a first contact portion protruding from the tongue plate and having a curved shape. Each second conductive terminal has a second contact portion protruding from the tongue plate and having a straight shape. In the front-to-back direction, the second contact portion is located in front of the first contact portion. The tail portion extends rearward from the top of the fixing portion and is exposed outside the base portion. The tail portion is curved to elastically contact the circuit board in a solder-free manner.

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