Electric connector

Abstract

The utility model discloses an electric connector, and the side wall of a metal housing of the electric connector is provided with a first riveting arm, and the rear cover of the metal housing is provided with a second riveting arm. The inner side surface of the first abutting section abuts against the outer side surface of the second abutting section by riveting the first riveting arm towards the abdicating space of the insulating body, so that the back cover is prevented from rebounding and warping upwards. The second riveting arm does not exceed the outer side surface of the side wall along the left-right direction, so that the size of the electric connector in the left-right direction is prevented from being additionally increased; the inner side face of the first abutting section and the outer side face of the second abutting section do not exceed the outer wall face of the rear cover backwards, so that the width of the electric connector in the front-back direction is prevented from being increased, and the requirements of light weight, thinness and miniaturization of products are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electric connector, especially an electric connector preventing the rebound of the back cover upwards.

BACKGROUND

[0002] The prior art electric connector is installed on a circuit board and used for connecting a computer and a screen or a computer and a home theater system, and is used as a high-definition digital display interface. The electric connector comprises an insulating body, a plurality of terminals accommodated in the insulating body, and a metal shell covering the periphery of the insulating body. A back cover is assembled and fixed to the metal shell to jointly shield the insulating body and the plurality of terminals with the metal shell. In order to fix the back cover to the metal shell, a locking arm is bent and extended on the left and right sides of the back cover and located outside the side walls of the metal shell. The locking arm is provided with a locking groove. The side walls of the metal shell are provided with a buckle protrusion for buckling cooperation with the locking groove. However, on the one hand, the buckling force of the buckling cooperation between the locking groove and the buckle protrusion is small, and the risk of buckling is easy to occur when the electric connector is subjected to external impact. On the other hand, with the development of small and thin electronic products, the space inside the electronic products becomes smaller, and the requirement for the dense layout of the electric connector is higher. Therefore, the volume of the electric connector should be as small as possible. However, the locking arm of the back cover covers the outside of the side walls of the metal shell, and there is a gap between the locking arm and the side walls. Therefore, the width of the electric connector in the left-right direction is increased, and the space of the circuit board occupied by the electric connector in the left-right direction is increased, which does not meet the requirement of small size of the product.

[0003] Therefore, it is necessary to design an improved electric connector to solve the above technical problems.

UTILITARY MODEL CONTENT

[0004] In view of the problems in the background art, the purpose of the utility model is to provide an electric connector. The inner side surface of the second abutting section of the second riveting arm of the back cover is riveted and abuts with the outer side surface of the first abutting section of the first riveting arm of the side wall of the metal shell in the accommodation space of the insulating body to prevent the rebound and warping of the back cover upwards. The second riveting arm does not exceed the outer side surface of the side wall in the left-right direction to avoid the increase of the size of the electric connector in the left-right direction. The inner side surface of the first abutting section and the outer side surface of the second abutting section do not exceed the outer wall surface of the back cover in the rear direction to avoid the increase of the width of the electric connector in the front-rear direction. The electric connector meets the requirement of small size of the product.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of electric connector, to be installed in a circuit board, its characterized in that, including: an insulating body, the rear end of the insulating body is recessed with at least one space for letting one's hair, multiple terminals are housed in the insulating body, each terminal includes a contact portion and a connecting portion located at the rear side of the contact portion, the connecting portion has a extending section bent and extends along the up-down direction, a welding portion connects the end of the extending section and is electrically connected with the circuit board, a metal shell is covered in the insulating body, the metal shell has a top wall, a bottom wall opposite to the top wall and two side walls connecting the top wall and the bottom wall, the top wall, the bottom wall and the two side walls are collectively enclosed to form a receiving space for accommodating the insulating body and multiple terminals, the extending section is arranged corresponding to the rear opening of the receiving space, at least one side wall is provided with a first riveting arm, the first riveting arm has a first abutment section, a rear cover is integrally connected with the rear end of the top wall and covers the rear opening of the receiving space to shield the extending section, the rear cover extends a second riveting arm on at least one side in left-right direction, the second riveting arm does not exceed the outer side surface of the side wall along the left-right direction, the second riveting arm has a second abutment section, the second abutment section extends to the space for letting one's hair, the first riveting arm is riveted towards the space for letting one's hair to make the inner side surface of the first abutment section abut on the outer side surface of the second abutment section, in the front-rear direction, the inner side surface of the first abutment section and the outer side surface of the second abutment section do not exceed the outer wall surface of the rear cover.

[0006] Further, the second riveting arm is inclinedly arranged towards the space for letting one's hair, the first riveting arm is inclinedly arranged towards the second riveting arm, the inner side surface of the first abutment section and the outer side surface of the second abutment section are both plate surfaces, and the abutment between the first abutment section and the second abutment section is surface contact.

[0007] Further, the first abutment section is arranged at the end of one side of the first riveting arm in the left-right direction, the second abutment section is arranged at the end of one side of the second riveting arm in the left-right direction, the first abutment section is located at the rear side of the second abutment section, and the upper and lower sides of the second abutment section are respectively convexly formed into a widened portion along the up-down direction, so that the width of the second abutment section in the up-down direction is greater than the width of the first abutment section.

[0008] Further, the second riveting arm has a pre-bent section and a transition section connecting the pre-bent section and the second abutting section, the transition section extends obliquely from the pre-bent section towards the space, the width of the transition section in the up-down direction is less than the width of the second abutting section in the up-down direction, the pre-bent section is bent forward by riveting to make the second riveting arm extend, the second abutting section and the transition section correspond to the space in the front-back direction, and the pre-bent section is located on one side of the space in the left-right direction.

[0009] Further, in the left-right direction, one side of the space is provided with a support part, the first riveting arm has a bent section connected with the first abutting section, the first riveting arm is bent by riveting with the support part as the fulcrum to form the bent section, and in the front-back direction, the outer side of the bent section faces backward without exceeding the outer wall surface of the rear cover.

[0010] Further, the two side walls respectively have one first riveting arm extending oppositely, the left and right sides of the rear cover extend two second riveting arms which are located inside the two first riveting arms, the maximum distance between the two second riveting arms is less than the distance between the inner wall surfaces of the two side walls, the left and right sides of the insulating body are respectively concave to form two spaces, the two second abutting sections respectively extend to the two spaces, and the two first abutting sections respectively abut the two second abutting sections.

[0011] Further, the rear cover is arranged in a manner that the upper part is wider and the lower part is narrower, the maximum width of the rear cover in the left-right direction is less than the distance between the outer wall surfaces of the two side walls, the lower part of the rear cover which is narrower in width is located between the two spaces, the two second riveting arms are respectively formed from the left and right sides of the lower part of the rear cover which is narrower in width and do not exceed the left and right edges of the upper part of the rear cover.

[0012] Further, the grounding member fixed to the metal shell includes a flat plate part welded to the top wall and two side plate parts respectively bent from the left and right sides of the flat plate part and extending downward, the two side plate parts are respectively located outside the two side walls, the front ends of the two side plate parts respectively extend to form a resilient arm to abut a shell, the two side walls respectively have a clamping groove corresponding to the two clamping pieces, and the two clamping pieces are respectively clamped and fixed to the two clamping grooves.

[0013] Further, the top wall is provided with two locking holes and two through holes between the two locking holes in the left-right direction, one of the locking holes extends to the side wall, one side edge of each through hole extends a spring sheet, the flat plate part includes a plurality of reinforcing branches, each of the reinforcing branches is located between each locking hole and the through hole adjacent to it and between the two through holes, the reinforcing branches between the two through holes are welded and fixed to the top wall, each adjacent two reinforcing branches is connected with an arch part, each arch part arches upward to avoid the spring sheet.

[0014] Further, the electric connector is a DP connector or an HDMI connector, the insulating body has a base and a tongue plate extending forward from the base, a plurality of terminals are arranged in two rows, a shielding sheet is fixed to the tongue plate and located between the two rows of terminals, the contact parts of the two rows of terminals are exposed to the upper and lower side surfaces of the tongue plate respectively, the extension part is fixed in the base, the welding part is exposed to the insulating body, each row of terminals includes at least one pair of differential signal terminals, the width of the contact part of each differential signal terminal is greater than the width of the connecting part and the width of the welding part, each connecting part includes a horizontal section, the extension part is bent from the rear end of the horizontal section and extends downward, the distance between the two horizontal sections of a pair of differential signal terminals is less than the distance between the two contact parts.

[0015] Compared with the prior art, the utility model have following beneficial effect: the rear cover shields the extension section of each terminal in the front -back direction, shield noise signal with the top wall, the bottom wall and two side walls in multiple directions, the first abutting section is abutted to the second abutting section of the second riveting arm of the rear cover through the riveting of the first riveting arm of the side wall to the accommodation space, the locking force between them is increased through the riveting abutting mode, prevent the rear cover from rebounding and warping upward, and the first riveting arm and the second riventing arm are elastic force arm, have good elastic deformation ability, the accommodation space is recessed in the insulating body to make the second abutting section extend into, make the first abutting section abut the outside of the second abutting section, provide the accommodation for the elastic deformation of the first abutting section and the second abutting section through the accommodation space, the riveting depth of the first riveting arm and the second riveting arm is deeper, the elastic recovery force of the second riveting arm makes the abutment between the second abutting section and the first abutting section more closely, guarantee the structural stability of the electric connector, the second riveting arm is located in the inside of the first riveting arm, and the second riveting arm does not exceed the outside of the side wall along the left and right direction, avoid extra increase the width of the electric connector in the left and right direction, the inside of the first abutting section and the outside of the second abutting section do not exceed the outer wall surface of the rear cover backward, avoid extra increase the width of the electric connector in the front -back direction, satisfy the demand of product small -size light and thin. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the perspective exploded view of the electric connector of the utility model;

[0017] Figure 2 It is the perspective assembly drawing of the electric connector of the utility model;

[0018] Figure 3 It is the rear view of the electric connector of the utility model;

[0019] Figure 4 It is the Figure 3 It is the local enlarged view of A part of the utility model;

[0020] Figure 5 It is the partial bottom view of the electric connector of the utility model;

[0021] Figure 6 It is the section view of the electric connector of the utility model;

[0022] Figure 7 It is the top view of the terminal of the utility model.

[0023] Specific embodiment's drawing number explanation:

[0024] Insulating body 1 Base 11 Let space 111 Supporting part 112 Tongue plate 12 Terminal 2 Contact part 21 Connecting part 22 Horizontal section 221 Extension section 222 Welding part 23 Differential signal terminal S Metal shell 3 Top wall 31 Through hole 311 Locking hole 312 Spring 313 Bottom wall 32 Side wall 33 Clamping groove 331 First riveting arm 332 Bent section 3321 First abutting section 3322 Rear cover 34 Second riveting arm 341 Pre-bent section 3411 Transition section 3412 Second abutting section 3413 Widened part W Accommodation space 35 Grounding piece 4 Flat plate part 41 Strengthening branch 411 Arch part 412 Side plate part 42 Clamping piece 421 Elastic arm 422 Shielding piece 5 Fixing seat 6 DETAILED DESCRIPTION

[0025] For better understanding of the purpose, structure, features and effects of the present application, the present application will be further described in conjunction with the drawings and specific embodiments.

[0026] Please refer to Figure 1 and Figure 2 The electric connector of the present application is used for mounting on a circuit board, which comprises an insulating body 1, a plurality of terminals 2, a shielding sheet 5 and a metal shell 3 received in the insulating body 1, and a grounding member 4 and a fixing seat 6 fixed to the metal shell 3. In the present embodiment, the electric connector is a DP connector, and in other embodiments, the electric connector can also be provided as an HDMI connector or a connector of other specifications.

[0027] As shown in Figure 1 , Figure 5 and Figure 6 The insulating body 1 comprises a base 11 and a tongue plate 12 extending forward from the base 11. In the present embodiment, the rear end of the base 11 is concavely provided with two accommodation spaces 111 on the left and right sides thereof, and each of the accommodation spaces 111 is provided with a support portion 112 on the outer side thereof. In other embodiments, only one accommodation space 111 can be provided, which is continuously provided in the left-right direction, and the two support portions 112 are respectively located on the left and right sides of the accommodation space 111.

[0028] As shown in Figure 1 and Figure 6 to Figure 7As shown, a plurality of terminals 2 are inlaid in the insulating body 1, the terminals 2 are arranged in two rows, each terminal 2 comprises a contact part 21 extending forward and exposed to one side surface of the tongue plate 12 in the up-down direction, a connecting part 22 located at the rear side of the contact part 21, and a solder part 23 extending out of the insulating body 1 to be electrically connected with the circuit board; in this embodiment, the contact parts 21 of the two rows of terminals 2 are exposed to the upper and lower side surfaces of the tongue plate 12 respectively, and the contact parts 21 of the two rows of terminals 2 are not aligned in the up-down direction; the shielding sheet 5 is inlaid in the tongue plate 12 and located between the two rows of terminals 2 to shield the two rows of terminals 2 in the up-down direction. Each connecting part 22 comprises a horizontal section 221 connecting the rear end of the contact part 21, and an extension section 222 bent from the rear end of the horizontal section 221 and extending downward, the extension section 222 is embedded in the base 11, and the solder part 23 connects the end of the extension section 222 and extends out of the base 11 to be soldered and fixed with the circuit board. The terminal 2 comprises a plurality of pairs of differential signal terminals S, since the contact part 21 is exposed to the air medium with small dielectric constant, the capacitance of the contact part 21 is small, which leads to the impedance of the contact part 21 being too high, the width of the contact part 21 of each differential signal terminal S is greater than the width of the connecting part 22 and the solder part 23, so that the contact area of the differential signal terminal S is increased, the capacitive of the contact part 21 is increased, the impedance of the contact part 21 is reduced, and at the same time, it is also beneficial for the contact part 21 to be connected with the mating terminal of the mating connector, and beneficial for the high-frequency transmission of the electrical connector; the width of the horizontal section 221 in the left-right direction is smaller than the width of the contact part 21 in the left-right direction and extends in an elongated shape, so the inductance of the horizontal section 221 is large, which leads to the impedance of the horizontal section 221 being too high, in the left-right direction, the distance D1 between the two horizontal sections 221 of each pair of differential signal terminals S is smaller than the distance D2 between the two contact parts 21, so that the capacitive of the horizontal section 221 is large, the impedance of the horizontal section 221 is reduced, and beneficial for the high-frequency transmission of the electrical connector.

[0029] As Figure 1 to Figure 6As shown, the metal shell 3 is fixed on the circuit board, the metal shell 3 has a top wall 31, a bottom wall 32 arranged opposite to the top wall 31, and two side walls 33 connecting the top wall 31 and the bottom wall 32, the top wall 31, the bottom wall 32 and the two side walls 33 together form a receiving space 35 for accommodating the insulating body 1 and a plurality of terminals 2. The top wall 31 is provided with two through holes 311 and two locking holes 312, in the left-right direction, the two through holes 311 are located between the two locking holes 312, the rear edge of each through hole 311 extends a spring sheet 313, the spring sheet 313 extends to the receiving space 35 to elastically abut the mating connector; two locking holes 312 are respectively used to fix two locking parts (not shown) of the mating connector to limit the position of the electrical connector and the mating connector, one of the locking holes 312 extends to the corresponding side wall 33. Two side walls 33 are respectively provided with a clamping groove 331; two side walls 33 respectively extend a first riveting arm 332, each first riveting arm 332 includes a bending section 3321 and a first abutting section 3322 connected to the bending section 3321. A rear cover 34 is integrally connected to the rear end of the top wall 31, the insulating body 1 embedded with a plurality of terminals 2 is assembled into the receiving space 35 from rear to front, a plurality of extension sections 222 are arranged corresponding to the rear opening of the receiving space 35, the rear cover 34 is bent downward to cover the rear opening of the receiving space 35, the rear cover 34 shields the extension sections 222 of the plurality of terminals 2 in the front-rear direction, so that the rear cover 34 and the top wall 31, the bottom wall 32 and the two side walls 33 together shield the noise signal of the terminals 2 in multiple directions. The rear cover 34 is arranged with a wide upper part and a narrow lower part, the wider upper part of the rear cover 34 increases the shielding area, the narrower lower part of the rear cover 34 is located between the two accommodation spaces 111 to avoid the two accommodation spaces 111, and saves material, which is beneficial to save manufacturing cost. The left and right sides of the narrower lower part of the rear cover 34 respectively extend a second riveting arm 341, each second riveting arm 341 does not exceed the outer wall surface of the side wall 33 in the left-right direction, and the two second riveting arms 341 do not exceed the left and right edges of the wider upper part of the rear cover 34 in the left-right direction, the maximum width of the rear cover 34 in the left-right direction is less than the distance between the outer wall surfaces of the two side walls 33, which avoids increasing the width of the electrical connector in the left-right direction, and meets the demand of small and thin products.Each of the second riveting arms 341 includes a pre-bent section 3411, a second abutting section 3413 and a transition section 3412 connecting the pre-bent section 3411 and the second abutting section 3413. The upper and lower sides of each of the second abutting sections 3413 are respectively protruded in the up and down directions to form a widened portion W. The width of each of the transition sections 3412 is smaller than the width of the corresponding second abutting section 3413.After the rear cover 34 is bent downward, two second riveting arms 341 are pre-pressed to bend two pre-bent sections 3411. The two second riveting arms 341 are respectively arranged obliquely towards the corresponding accommodation spaces 111, which saves the size of the second riveting arms 341 in the left-right direction under the premise of ensuring the length of the force arm of the second riveting arms 341. The two pre-bent sections 3411 are respectively located on one side of the corresponding accommodation spaces 111 in the left-right direction. The two second abutting sections 3413 and the two transition sections 3412 of the two second riveting arms 341 are respectively arranged opposite to the two accommodation spaces 111 in the front-back direction. The maximum distance between the two second riveting arms 341 is less than the distance between the inner walls of the two side walls 33, so that the two second riveting arms 341 are obliquely extended to extend the two second abutting sections 3413 to the corresponding accommodation spaces 111. By pre-pressing the two second riveting arms 341, the two second riveting arms 341 are easy to bend, and the stress of the two second riveting arms 341 is reduced. After the two second riveting arms 341 are pre-pressed, the two first riveting arms 332 are respectively riveted and bent around the two support portions 112 as fulcrums to form two bent sections 3321. The two first riveting arms 332 are respectively arranged obliquely towards the corresponding second riveting arms 341. Each first abutting section 3322 is located at the end of the corresponding first riveting arm 332 on one side in the left-right direction. Each second abutting section 3413 is located at the end of the corresponding second riveting arm 341 on one side in the left-right direction, so that the first abutting section 3322 and the second abutting section 3413 elastically abut correspondingly. Each first abutting section 3322 is arranged on the back side of the corresponding second abutting section 3413. The inner side surfaces of the two first abutting sections 3322 and the outer side surfaces of the two second abutting sections 3413, which are away from the corresponding accommodation spaces 111, abut correspondingly. Since the accommodation spaces 111 accommodate the corresponding second abutting sections 3413, the first abutting sections 3322 abut the outer side surfaces of the second abutting sections 3413. The accommodation spaces 111 provide accommodation for the elastic deformation of the first abutting sections 3322 and the second abutting sections 3413, so that the riveting depth of the first riveting arms 332 and the second riveting arms 341 is deeper. The elastic restoring force of the second riveting arms 341 makes the abutment between the second abutting sections 3413 and the first abutting sections 3322 more closely, which ensures the structural stability of the electrical connector. In the front-back direction, the outer side surfaces of the two bent sections 3321 do not exceed the outer wall surface of the rear cover 34, which avoids additional increase in the size of the electrical connector in the front-back direction, and meets the demand for small, light and thin products.Further, in the embodiment, the inner side surface of each first abutting section 3322 and the outer side surface of each second abutting section 3413 are both plate surfaces, and the inner side surface of each first abutting section 3322 is parallel to the outer side surface of the corresponding second abutting section 3413, so that the abutting position of each first abutting section 3322 and the corresponding second abutting section 3413 is a surface contact, which increases the abutting area and makes the abutting more stable; in other embodiments, the first abutting section 3322 and the second abutting section 3413 can also be point contact or line contact. The provision of the widened portion W makes the width of each second abutting section 3413 in the up-down direction greater than the width of the corresponding first abutting section 3322, which ensures that the first abutting section 3322 can abut against the corresponding second abutting section 3413 even if a slight deviation occurs during riveting, and guarantees the abutting reliability.

[0030] As shown in Figure 1 to Figure 2 and Figure 6 The grounding member 4 is made of metal, and includes a flat plate portion 41 and two side plate portions 42 respectively bent from the left and right sides of the flat plate portion 41 and extending downward, and each of the side plate portions 42 has a front end extending to form an elastic arm 422. Further, each of the side plate portions 42 is provided with a clamping piece 421, and after the grounding member 4 is sleeved outside the metal shell 3, the two side plate portions 42 are located outside the two side walls 33, and the two clamping pieces 421 are clamped and fixed with the two clamping grooves 331 of the two side walls 33 respectively to position the grounding member 4; the flat plate portion 41 is arranged outside the top wall 31 and is fixed with the top wall 31 by spot welding, so that the grounding member 4 is stably and reliably fixed outside the metal shell 3; the two elastic arms 422 are used for abutting against a metal chassis to ground, release noise and reduce signal interference. The flat plate portion 41 includes a plurality of reinforcing branches 411, which are respectively located between each locking hole 312 and the through hole 311 adjacent thereto and between the two through holes 311, the reinforcing branch 411 between the two through holes 311 is fixed with the top wall 31 by spot welding to strengthen the mounting stability of the flat plate portion 41 and the metal shell 3, and an arch portion 412 is connected between each two adjacent reinforcing branches 411, each arch portion 412 arches upward to pass over the corresponding spring 313 to avoid collision with the spring 313, and the arch portion 412 connects the adjacent reinforcing branches 411 to strengthen the strength of the reinforcing branches 411.

[0031] In summary, the electric connector has the following beneficial effects:

[0032] (1) The rear cover 34 shields the extension section 222 of each terminal 2 in the front-rear direction, together with the top wall 31, the bottom wall 32, and the two side walls 33, to shield noise signals in multiple directions, without increasing the width of the electrical connector in the left-right direction; the first riveting arm 332 of the side wall 33 is riveted toward the accommodation space 111 so that the first abutting section 3322 abuts the second abutting section 3413 of the second riveting arm 341 of the rear cover 34, and the riveting abutting method increases the clamping force between the two to prevent the rear cover 34 from rebounding and warping upward, and the first riveting arm 332 and the second riveting arm 341 are elastic force arms with good elastic deformation capability; the insulating body 1 is recessed with the accommodation space 111 to extend the second abutting section 3413 into the accommodation space 111 so that the first abutting section 3322 abuts the outer side surface of the second abutting section 3413, the accommodation space 111 provides accommodation for the elastic deformation of the first abutting section 3322 and the second abutting section 3413, the riveting depth of the first riveting arm 332 and the second riveting arm 341 is deeper, the elastic recovery force of the second riveting arm 341 makes the abutment between the second abutting section 3413 and the first abutting section 3322 more closely, and the structural stability of the electrical connector is ensured; the second riveting arm 341 is located on the inner side of the first riveting arm 332 and does not exceed the outer side surface of the side wall 33 in the left-right direction, without increasing the width of the electrical connector in the left-right direction, the inner side surface of the first abutting section 3322 and the outer side surface of the second abutting section 3413 do not exceed the outer wall surface of the rear cover 34 in the rear direction, without increasing the width of the electrical connector in the front-rear direction, and the demand for small, thin, and light products is met.

[0033] (2) Two second riveting arms 341 are respectively arranged obliquely towards the corresponding displacement space 111, which saves the size of the second riveting arms 341 in the left-right direction under the premise of ensuring the length of the force arm of the second riveting arms 341, the abutment between each first abutment section 3322 and the corresponding second abutment section 3413 is surface contact, which increases the abutment area of the two and makes the abutment more stable, each first abutment section 3322 is located at the end of the corresponding first riveting arm 332 on one side in the left-right direction, and each second abutment section 3413 is located at the end of the corresponding second riveting arm 341 on one side in the left-right direction, so that the first abutment section 3322 and the second abutment section 3413 correspond elastically abut, each first abutment section 3322 is arranged at the back side of the corresponding second abutment section 3413, and each second abutment section 3413 is respectively provided with a widened portion W formed in the up-down direction on the upper and lower sides, so that the width of each second abutment section 3413 in the up-down direction is greater than that of the corresponding first abutment section 3322, which ensures that the first abutment section 3322 can abut against the corresponding second abutment section 3413 even if it is slightly offset during riveting, and guarantees the abutment reliability of the two.

[0034] (3) Each second riveting arm 341 does not exceed the outer wall surface of the side wall 33 in the left-right direction, and both second riveting arms 341 do not exceed the left and right edges of the upper part of the rear cover 34 with a wider width in the left-right direction, the maximum width of the rear cover 34 in the left-right direction is less than the distance between the outer wall surfaces of both side walls 33, which avoids additional increase in the width of the electrical connector in the left-right direction, meets the demand of small, light and thin product, and pre-presses both second riveting arms 341 to make both pre-folding sections 3411 bend, so that both second abutment sections 3413 extend to the corresponding displacement space 111, pre-pressing both second riveting arms 341 makes both second riveting arms 341 easy to bend, reduces the stress of both second riveting arms 341, and facilitates the corresponding abutment of the first riveting arm 332 and the second riveting arm 341.

[0035] (4) Both first riveting arms 332 are respectively riveted and bent at both support portions 112 to form two bent sections 3321, and the inner side surfaces of both first abutment sections 3322 correspondingly abut against the outer side surfaces of both second abutment sections 3413. In the front-back direction, the outer side surfaces of both bent sections 3321 do not exceed the outer wall surface of the rear cover 34, which avoids additional increase in the size of the electrical connector in the front-back direction, and meets the demand of small, light and thin product.

[0036] (5) The two side plate parts 42 of the grounding part 4 are respectively located outside the two side walls 33, and the two clamping pieces 421 are respectively clamped and fixed with the two clamping grooves 331 of the two side walls 33 to pre-position the grounding part 4; the flat plate part 41 is arranged outside the top wall 31 and is fixed with the top wall 31 by spot welding, so that the grounding part 4 is stably and reliably fixed outside the metal shell 3; the two elastic arms 422 are respectively used for abutting against a shell to ground, release noise, and reduce signal interference.

[0037] (6) The flat plate part 41 comprises a plurality of reinforcing branches 411, the reinforcing branches 411 between the two through holes 311 are fixed with the top wall 31 by spot welding, the mounting stability of the flat plate part 41 and the metal shell 3 is strengthened, an arch-shaped part 412 is connected between every two adjacent reinforcing branches 411, each arch-shaped part 412 arches upwards to pass above the corresponding elastic sheet 313 to avoid collision with the elastic sheet 313, and the adjacent reinforcing branches 411 are connected through the arch-shaped part 412, so that the strength of the plurality of reinforcing branches 411 is strengthened.

[0038] (7) Since the contact part 21 is exposed to the air medium with small dielectric constant, the capacitance of the contact part 21 is small, which causes the impedance of the contact part 21 to be too high, the width of the contact part 21 of each differential signal terminal S is greater than the width of the connecting part 22 and the welding part 23, so that the contact area of the differential signal terminal S is increased, the capacitive of the contact part 21 is increased, the impedance of the contact part 21 is reduced, and at the same time, it is also beneficial to the abutment of the contact part 21 with the abutment terminal of the abutment connector, and beneficial to the high-frequency transmission performance of the electric connector; the width of the horizontal section 221 in the left-right direction is smaller than the width of the contact part 21 and extends in an elongated shape, so the inductance of the horizontal section 221 is large, which causes the impedance of the horizontal section 221 to be too high, and in the left-right direction, the distance between the two horizontal sections 221 of each pair of differential signal terminals S is smaller than the distance between the two contact parts 21, so that the capacitive of the horizontal section 221 is large, the impedance of the horizontal section 221 is reduced, and the high-frequency transmission of the electric connector is facilitated.

[0039] The above detailed description is only for the preferred embodiment of the utility model, and does not limit the patent range of the utility model, so that any equivalent technical change based on the content of the present application is included in the patent range of the present application.

Claims

1. An electrical connector for mounting on a circuit board, characterized in that , comprising: an insulating body, a rear end of the insulating body is concave forwardly provided with at least one space for accommodation; a plurality of terminals, accommodated in the insulating body, each of the terminals comprises a contact part and a connecting part located at a rear side of the contact part, the connecting part has an extension section bent and extended along an up-down direction, a welding part connects a terminal end of the extension section and is electrically connected with the circuit board; a metal shell, covering the insulating body, the metal shell has a top wall, a bottom wall oppositely arranged with the top wall, and two side walls connecting the top wall and the bottom wall, the top wall, the bottom wall and the two side walls jointly enclose a receiving space for accommodating the insulating body and the plurality of terminals, the extension section is arranged corresponding to a rear opening of the receiving space, at least one of the side walls is provided with a first riveting arm, the first riveting arm has a first abutting section, a rear cover is integrally connected with a rear end of the top wall and covers the rear opening of the receiving space to shield the extension section, at least one side of the rear cover in left-right direction extends a second riveting arm, the second riveting arm does not exceed an outer side surface of the side wall in left-right direction, the second riveting arm has a second abutting section, the second abutting section extends to the space for accommodation, the first riveting arm is riveted towards the space for accommodation to make an inner side surface of the first abutting section abut an outer side surface of the second abutting section, in front-rear direction, the inner side surface of the first abutting section and the outer side surface of the second abutting section do not exceed an outer wall surface of the rear cover rearwardly.

2. The electrical connector of claim 1, wherein: The second riveting arm is arranged obliquely towards the space for accommodation, the first riveting arm is arranged obliquely towards the second riveting arm, the inner side surface of the first abutting section and the outer side surface of the second abutting section are both plate surfaces, and the abutting position of the first abutting section and the second abutting section is surface contact.

3. The electrical connector of claim 1, wherein: The first abutting section is arranged at a terminal end of one side of the first riveting arm in left-right direction, the second abutting section is arranged at a terminal end of one side of the second riveting arm in left-right direction, the first abutting section is located rearwardly of the second abutting section, and the two sides of the second abutting section in up-down direction are respectively convexly formed with a widened part to make the width of the second abutting section in up-down direction greater than the width of the first abutting section.

4. The electrical connector of claim 1, wherein: The second riveting arm has a pre-folding section and a transition section connecting the pre-folding section and the second abutting section, the transition section is obliquely extended from the pre-folding section towards the space for accommodation, the width of the transition section in up-down direction is less than the width of the second abutting section in up-down direction, the pre-folding section is riveted to make the second riveting arm bent and extended forwardly, the second abutting section and the transition section both correspond to the space for accommodation in front-rear direction, and the pre-folding section is located at one side of the space for accommodation in left-right direction.

5. The electrical connector of claim 1, wherein: In left-right direction, one side of the space for accommodation is provided with a support part, the first riveting arm has a bending section connected with the first abutting section, and the first riveting arm is riveted and bent to form the bending section with the support part as a fulcrum, in front-rear direction, an outer side surface of the bending section does not exceed an outer wall surface of the rear cover rearwardly.

6. The electrical connector of claim 1, wherein: Two first riveting arms are respectively arranged on the two side walls, two second riveting arms are arranged on the left and right sides of the back cover and located inside the two first riveting arms, the maximum distance between the two second riveting arms is smaller than the distance between the inner walls of the two side walls, two accommodation spaces are respectively arranged on the left and right sides of the insulating body, two second abutting sections are respectively arranged in the two accommodation spaces, and two first abutting sections are respectively arranged to abut against the two second abutting sections.

7. The electrical connector of claim 6, wherein: The back cover is arranged in a wide-up and narrow-down manner, the maximum width of the back cover in the left-right direction is smaller than the distance between the outer walls of the two side walls, the narrow-down lower part of the back cover is located between the two accommodation spaces, and the two second riveting arms are respectively arranged on the left and right sides of the narrow-down lower part of the back cover and do not exceed the left and right edges of the wide-up upper part of the back cover.

8. The electrical connector of claim 1, wherein: A grounding member is further arranged on the metal shell, the grounding member comprises a plate portion welded to the top wall and two side plate portions respectively bent from the left and right sides of the plate portion and extending downward, the two side plate portions are respectively located outside the two side walls, the front ends of the two side plate portions respectively extend to form elastic arms to abut against a shell, the two side plate portions are respectively provided with clamping pieces, two clamping grooves are respectively arranged in the two side walls corresponding to the two clamping pieces, and the two clamping pieces are respectively clamped and fixed to the two clamping grooves.

9. The electrical connector of claim 8, wherein: Two locking holes and two through holes located between the two locking holes in the left-right direction are arranged in the top wall, one of the locking holes extends to the side wall, one side edge of each through hole extends an elastic piece, the plate portion comprises a plurality of reinforcing branches, the reinforcing branches are respectively arranged between each locking hole and the through hole adjacent to the locking hole and between the two through holes, the reinforcing branches between the two through holes are welded to the top wall, and an arch portion is connected between each two adjacent reinforcing branches, each arch portion arches upward to pass over the corresponding elastic piece to avoid the elastic piece.

10. The electrical connector of claim 1, wherein: The electric connector is a DP connector or an HDMI connector, the insulating body has a base and a tongue plate extending forward from the base, a plurality of terminals are arranged in two rows, a shielding piece is arranged on the tongue plate and located between the two rows of terminals, the contact portions of the two rows of terminals are respectively exposed to the upper and lower side surfaces of the tongue plate, the extension portions are fixed in the base, the welding portions are exposed to the insulating body, each row of terminals comprises at least one pair of differential signal terminals, the width of the contact portion of each differential signal terminal is greater than the width of the connecting portion and the width of the welding portion, each connecting portion comprises a horizontal portion, the extension portion is bent from the rear end of the horizontal portion and extends downward, and the distance between the two horizontal portions of the pair of differential signal terminals is smaller than the distance between the two contact portions.

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