Electrical connector and mating connector mated therewith

Abstract

An electrical connector and a mating connector mating therewith. The electrical connector includes a body and a terminal assembly. The body is provided with a terminal hole penetrating forward, and the terminal assembly is fixed in the terminal hole. The terminal assembly includes an insulating front member, a terminal member, and an insulating rear member. The terminal member is provided with a docking cavity penetrating forward and a cable cavity penetrating backward. A crown spring is received in the docking cavity. The terminal member is provided with an outer ring rib. The insulating rear member includes a rear ring portion and a plurality of cantilevers extending forward from the rear ring portion. The cantilevers abut against the outer ring rib of the terminal member from the outside to the inside. The insulating front member includes a front inner cavity, a rear inner cavity, and a stepped portion located between the two. The terminal member and the insulating rear member are assembled in the front and rear inner cavities, and the outer ring rib abuts against the stepped portion. Compared with the prior art, in the terminal assembly of the present invention, the insulating front and rear members and the terminal member press against each other, increasing the fixing force between components and the stability of the terminal assembly.

Description

Technical Field

[0001] The present invention relates to an electrical connector and a docking connector.

Background Art

[0002] Referring to CN106374282A, it discloses an electrical connector combination for a high-voltage system of a new energy vehicle. For such an electrical connector used in high voltage, there are high requirements for the assembly stability of the electrical connector itself, the locking stability, etc. Our company has continuously invested in research and development of such electrical connectors and made improvements to overcome the defects existing in the product design.

Summary of the Invention

[0003] The technical solution to be solved by the present invention is to provide an electrical connector to increase the assembly stability of the terminal assembly.

[0004] To achieve the above object, the present invention adopts the following technical solution: An electrical connector includes a body and a terminal assembly. The body is provided with a terminal hole penetrating forward, and the terminal assembly is fixed in the terminal hole. The terminal assembly includes an insulating front member, a terminal member, and an insulating rear member. The terminal member is provided with a docking cavity penetrating forward and a cable cavity penetrating backward. A crown spring is received in the docking cavity. The terminal member is provided with an outer ring rib. The insulating rear member includes a rear ring portion and a plurality of cantilevers extending forward from the rear ring portion. The cantilevers abut against the outer ring rib of the terminal member from the outside to the inside. The insulating front member includes a front inner cavity, a rear inner cavity, and a stepped portion located between the two. The terminal member and the insulating rear member are assembled in the front and rear inner cavities, and the outer ring rib abuts against the stepped portion.

[0005] To achieve the above object, the present invention adopts the following technical solution: A docking connector includes a base, a surrounding wall vertically protruding from the base, and terminals. The surrounding wall forms a docking space. The terminals include a contact portion located in the docking space and a fixing portion fixed in a substrate. The feature is that the base is provided with a tubular portion extending backward. The inner wall surface of the tubular portion is provided with fingers extending inward. The fixing portion of the terminal is provided with an annular groove. The fixing portion is received in the tubular portion and the fingers abut against the annular groove to limit the backward movement of the terminal.

[0006] Compared with the prior art, in the terminal assembly of the present invention, the insulating front and rear members and the terminal member press against each other, increasing the fixing force between the components and the stability of the terminal assembly.

Description of the Drawings

[0007] Figure 1 It is a perspective view of the electrical connector of the present invention.

[0008] Figure 2 It is Figure 1 a perspective exploded view of the electrical connector, in which the locking device is removed.

[0009] Figure 3 is Figure 2 exploded perspective view of an electrical connector, in which the body is further removed.

[0010] Figure 4 is Figure 3 exploded perspective view of the middle terminal assembly.

[0011] Figure 5 is Figure 4 perspective view of the middle insulating rear part from another angle.

[0012] Figure 6 is Figure 1 partial cross-sectional view along the dashed line A-A.

[0013] Figure 7 is the perspective view of the docking connector of the present invention.

[0014] Figure 8 is Figure 7 perspective view from another angle.

[0015] Figure 9 is Figure 7 exploded perspective view of the docking connector, in which one terminal, shielding sleeve and metal plate seat are removed.

[0016] Figure 10 is Figure 7 exploded perspective view from another angle, in which the sealing ring is removed.

[0017] Figure 11 is Figure 8 exploded perspective view of the middle terminal, shielding sleeve and metal plate seat.

[0018] Figure 12 is Figure 7 cross-sectional view along the dashed line B-B.

[0019]

Element Symbol Explanation

[0020]

[0021]

[0022] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Specific Embodiments

[0023] The present invention is an electrical connector combination. As shown in Figures 1 - 12 , the combination can be used in the high-voltage system of new energy vehicles. The combination includes an electrical connector 100 and a docking connector 200 that are docked with each other. The structure and improvement points will be introduced in detail below.

[0024] As shown Figures 1 - 3 in FIG. 1, the electrical connector 100 includes a body 10, a terminal assembly 20, and a latch device 30. The body 10 is formed by injection molding of an insulating material and is provided with a terminal hole 11 penetrating forward. The terminal assembly 20 is received and fixed in the terminal hole 11, and the rear end of the terminal assembly 20 is connected to a cable 41. The latch device 30 is pivotally mounted on both sides of the body 10 and can rotate forward and backward relative to the body 10 to achieve the latched and unlatched states. Figure 1 The state shown in FIG. 2 is the drawing when it is in the latched state. The specific working principle can refer to another patent application filed by the applicant on the same day. A shielding sleeve 42 is sleeved outside the terminal assembly 20, and the shielding sleeve 42 is electrically connected to the grounding layer in the cable 41. The cable 41 is provided with a fixing member 43 and a sealing ring 44 at the junction with the body 10.

[0025] As shown Figures 4 - 6 in FIG. 3, the terminal assembly 20 is an overall circular tubular structure, which includes an insulating front member 21, a terminal member 22, and an insulating rear member 23. The terminal member 22 is provided with a docking cavity 221 penetrating forward and a cable cavity 222 penetrating backward, and the two are separated by a partition wall 223; a crown spring 224 is received in the docking cavity 221, and the conductor core 411 of the cable 41 is inserted into the cable cavity 222. The terminal member 22 is made of a metal material and has conductivity, so that the terminal member 22 is electrically and mechanically connected to the conductor core 411 of the cable. The front end of the conductor core 411 abuts against the partition wall 223 to limit the forward movement of the conductor core. In other embodiments, through holes may also be provided in the partition wall. An outer ring rib 225 is provided on the outer peripheral surface of the terminal member 22, and the outer ring rib and the partition wall 223 are substantially located at the same vertical position.

[0026] The insulating rear member 23 includes a rear ring portion 231, a plurality of cantilever arms 232 extending forward from the rear ring portion, and a pair of buckle arms 233. The buckle arms 232 are located between adjacent cantilever arms 233, and the ends of the buckle arms have outwardly protruding buckle heads 2331. The insulating rear member 23 is sleeved outside the terminal member 22, and the cantilever arms 232 abut against the outer ring rib 225 of the terminal member 22 from the outside to the inside. The ends of the cantilever arms 232 are inclined and bent inward to ensure the reliability of the abutment. The thickness of the rear ring portion 231 is greater than that of the cantilever arms 232. The rear ring portion 231 is recessed at the corresponding buckle arms 233 so that the rear ring portion 231 and the buckle arms 232 are in a coplanar structure. The length of the buckle arms extending forward is shorter than the length of the cantilever arms.

[0027] The insulating front member 21 includes a front inner cavity 211, a rear inner cavity 212 and a stepped portion 213 located therebetween. The assembled terminal member 22 and the insulating rear member 23 are further assembled together in the front and rear inner cavities 211 and 212, and the outer ring rib 225 abuts against the stepped portion 213. The inner wall surface of the rear inner cavity 212 is provided with a plurality of spaced ribs 214 extending in the front-rear direction, and the cantilever 232 cooperates with the spaced ribs 214 to limit the rotation of the insulating rear member 23 in the rear inner cavity 212. The insulating front member is provided with a fastening hole 215, and the fastening head 2331 of the fastening arm 233 is fastened in the fastening hole 215 from the inside to the outside. The fastening hole 215 is located directly behind the corresponding spaced rib 214. The outer side surface of the rear half of the insulating rear member 23 is provided with a plurality of spaced grooves 216 extending in the front-rear direction, and the spaced grooves 216 and the spaced ribs 214 are correspondingly arranged inside and outside each other and cooperate Figure 3 , and the spaced grooves 216 of the insulating rear member are available for the elastic fingers 421 provided on the shielding sleeve 42 to abut against. The fastening hole 215 is provided at the position of the spaced groove 216.

[0028] Refer Figures 7 - 12 As shown, it shows a docking connector 200 for mating with the electrical connector 100. The docking connector 200 includes a base 51, a surrounding wall 52 vertically protruding from the base, and terminals 60. The base and the surrounding wall are formed by injection molding of insulating materials, and the surrounding wall 52 forms a docking space 521. The terminals 60 include contact portions 61 located in the docking space 521, fixing portions 62 fixed in the base 51, and tails 63 extending further backward. The base 51 has a square or rectangular structure, and is provided with two tubular portions 511 extending backward for accommodating two terminals 60. The inner wall surface of the tubular portion 511 is provided with inwardly extending fingers 512, and the fixing portion 62 of the terminal is provided with an annular groove 621. The terminal is inserted into the tubular portion 511 from the rear to the front, the contact portion 61 passes through the tubular portion 511 and enters the docking space 521, and the fixing portion 62 is accommodated in the tubular portion 511. The fingers 512 in the tubular portion abut against the annular groove 621, thereby restricting the backward movement of the terminal 60.

[0029] The docking connector 200 further includes a shielding sleeve 71, a metal plate seat 72 and a sealing ring 73. The rear end of the shielding sleeve 71 extends with a plurality of elastic arms 711, which are assembled on the outside of the tubular portion 511 from the rear to the front, so that the shielding sleeve 71 is sleeved on the contact portion 61 and the outside of the tubular portion 511 at intervals. The sealing ring 73 is placed in a ring groove provided on the rear end surface of the base 51. The base 51 is seated on the metal plate seat 72 and fixed together by bolts, nuts and other parts, and the sealing ring 73 seals the base 51 and the metal plate seat 72. The metal plate seat 72 is provided with a through hole 721 for the tubular portion 511 to pass through, so that the elastic arms 711 abut against the inner wall surface of the through hole 721 outwardly. The elastic arms 711 have a V-shaped structure. In this way, the V-shaped structure can elastically press against the inner wall surface of the through hole 721.

[0030] The electrical connector 100 of the present invention is inserted into the docking connector 200, and the locking device 30 further fixes the docking of the two.

[0031] The above are only the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the specification of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An electrical connector, comprising a body and a terminal assembly. The body is provided with a terminal hole penetrating forward, and the terminal assembly is fixed in the terminal hole. The terminal assembly includes an insulating front member, a terminal member, and an insulating rear member. The terminal member is provided with a docking cavity penetrating forward and a cable cavity penetrating backward, and a crown spring is received in the docking cavity. Characterized in that: The terminal member is provided with an outer ring rib. The insulating rear member includes a rear ring portion and a plurality of cantilevers extending forward from the rear ring portion. The cantilevers abut against the outer ring rib of the terminal member from the outside to the inside. The insulating front member includes a front inner cavity, a rear inner cavity, and a stepped portion located between the two. The terminal member and the insulating rear member are assembled in the front and rear inner cavities. The outer ring rib abuts against the stepped portion, and the insulating rear member and the rear inner cavity are fixedly connected to each other by means of a buckle.

2. The electrical connector according to claim 1, Characterized in that: The end of the cantilever is bent inwardly and abuts against the outer ring rib.

3. The electrical connector according to claim 1, Characterized in that: The insulating rear member is provided with a pair of buckle arms. The buckle arms are located between adjacent cantilevers. The end of the buckle arm has a buckle head protruding outward. The insulating front member is provided with a buckle hole, and the buckle head of the buckle arm is buckled in the buckle hole from the inside to the outside.

4. The electrical connector according to claim 3, Characterized in that: The insulating rear member is provided with four cantilevers, and the cantilevers are symmetrically distributed in a ring shape.

5. The electrical connector according to claim 1, Characterized in that: The inner wall surface of the rear inner cavity is provided with a plurality of spaced ribs extending back and forth; the cantilever cooperates with the spaced ribs to limit the rotation of the insulating rear member in the rear inner cavity.

6. The electrical connector according to claim 3, Characterized in that: The thick portion of the rear ring portion is greater than the thick portion of the cantilever, and the rear ring portion is recessed at the corresponding buckle arm so that the rear ring portion and the buckle arm are in a coplanar structure.

7. The electrical connector according to claim 3, Characterized in that: The length of the buckle arm extending forward is shorter than the length of the cantilever.

8. The electrical connector according to claim 1, Characterized in that: The insulating rear member is provided with spaced grooves extending on its outer peripheral surface; the electrical connector includes a shielding sleeve, the shielding sleeve is sleeved outside the terminal assembly, and a plurality of elastic fingers provided thereon abut against the spaced grooves of the insulating rear member.

9. A docking connector for mating with the electrical connector of claim 1. The docking connector includes a base, a surrounding wall vertically protruding from the base, and terminals. The surrounding wall forms a docking space. The terminals include a contact portion located in the docking space and a fixing portion fixed in the substrate. Characterized in that: The base is provided with a tubular portion extending backward. The inner wall surface of the tubular portion is provided with fingers extending inward. The fixing portion of the terminal is provided with a ring groove. The fixing portion is received in the tubular portion and the fingers abut against the ring groove to limit the backward movement of the terminal.

10. The docking connector according to claim 9, Characterized in that: The docking connector includes a shielding sleeve and a metal plate seat, and the base is seated on the metal plate seat; a plurality of elastic arms extend from the rear end of the shielding sleeve, and the shielding sleeve is sleeved outside the contact part and outside the tubular part at intervals; the metal plate seat is provided with a through hole for the through hole of the tubular part, and its elastic arms abut against the inner wall surface of the through hole outwardly.

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