Electrical connector

Abstract

The utility model discloses an electric connector, including rear insulator, contact spring piece of a plurality of being connected in rear insulator and the front insulator of longitudinal front end of rear insulator, the contact spring piece is equipped with the holding portion of holding in rear insulator and the cantilever portion of the longitudinal forward extension from holding portion, the front insulator is equipped with the hollow portion of the longitudinal extension and the lattice portion of interval arrangement with hollow portion, the cantilever portion is accommodated in hollow portion. At least one the contact spring piece is equipped with the reinforcing arm of the longitudinal forward extension from the lateral side of holding portion, the reinforcing arm is located in the lattice portion of front insulator, to this increases the strength of front insulator, so that front insulator is not easy to warp.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a contact-type electrical connector. Background Technology

[0002] With continuous technological advancements, the performance requirements for contact-type electrical connectors are constantly increasing, facing challenges such as ultra-thin design and long lifespan. Current electrical connectors typically involve a first injection molding of the rear insulator at the contact terminal's retaining portion, followed by a second injection molding of the front insulator at the front end of the rear insulator. To ensure the stability of the elastic cantilever's spring height in the final connector, the free end of the elastic cantilever is pressed downwards before the second injection molding. However, after the second injection molding, the front end of the front insulator is affected by the stress of the contact terminal's elastic cantilever. Specifically, when the elastic force of the contact terminal's elastic cantilever exceeds the plastic strength of the front insulator, it can lead to warping and deformation of the plastic.

[0003] Therefore, it is hoped that a new electrical connector can be proposed to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to provide an electrical connector that solves the problem of easy warping of the front insulator in existing products.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an electrical connector, comprising a rear insulator, a plurality of contact springs connected to the rear insulator, and a front insulator located at the longitudinal front end of the rear insulator. Each contact spring has a holding portion fixed within the rear insulator and a cantilever portion extending longitudinally forward from the holding portion. The front insulator has a hollow portion extending longitudinally and a grid portion spaced apart from the hollow portion. The cantilever portion is accommodated within the hollow portion. At least one of the contact springs has a reinforcing arm extending longitudinally forward from the lateral side of the holding portion, the reinforcing arm being located within the grid portion of the front insulator.

[0006] In a preferred embodiment, the rear insulator has a main body portion for fixing the holding portion of the contact spring and several protruding rib portions extending longitudinally forward from the main body portion, and the reinforcing arm is fixed in the corresponding protruding rib portions.

[0007] In a preferred embodiment, the front insulator has a through hole at the longitudinal front end of the hollow portion, the contact spring has a protrusion at the longitudinal front end of the cantilever portion, the protrusion extends into the through hole, and the rib extends longitudinally to the through hole.

[0008] In a preferred embodiment, the reinforcing arm of the contact spring is provided with a connecting portion extending outward from the lateral side of the retaining portion, an extension arm bending upward from the connecting portion and extending forward in the longitudinal direction, and a plurality of slots located on the extension arm, wherein the protruding rib is filled in the slots of the extension arm.

[0009] In a preferred embodiment, the rear insulator is integrally injection molded onto the retaining portion and the reinforcing arm of the contact spring, and the protruding rib and the cantilever portion of the contact spring are spaced apart laterally.

[0010] In a preferred embodiment, the front insulator is injection molded at the longitudinal front end of the main body of the rear insulator, and the front insulator is provided with a material escape groove that extends vertically through the grid portion, and the protruding rib is accommodated in the material escape groove.

[0011] In a preferred embodiment, the front insulator has a joint portion located at the longitudinal rear end of the hollow portion, the joint portion being injection molded at the longitudinal front end of the main body of the rear insulator, the main body having a limiting groove located at the longitudinal front end, and the joint portion of the front insulator having a protruding ridge accommodated within the limiting groove.

[0012] In a preferred embodiment, the joint portion is provided with several protrusions extending longitudinally backward and through holes penetrating the protrusions vertically, and the main body portion is provided with grooves corresponding to receiving the protrusions and pins protruding upward from the bottom wall of the grooves, the pins filling the through holes.

[0013] In a preferred embodiment, the main body is provided with a front positioning hole spaced laterally from the groove, the front positioning hole penetrates the main body vertically, and a portion of the upper and lower surfaces of the retaining part are exposed within the front positioning hole.

[0014] In a preferred embodiment, at least one of the contact springs is provided with two reinforcing arms that extend longitudinally forward from both sides of the retaining portion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: at least one of the contact springs is provided with a reinforcing arm extending longitudinally forward from the lateral side of the self-holding portion, the reinforcing arm being located within the grid portion of the front insulator, thereby increasing the strength of the front insulator and making the front insulator less prone to warping. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the electrical connector in a preferred embodiment of the present invention.

[0017] Figure 2 yes Figure 1The diagram shows a partially exploded view of the electrical connector.

[0018] Figure 3 yes Figure 2 The diagram shows an exploded view of the electrical connector.

[0019] Figure 4 yes Figure 3 An exploded view of the electrical connector from another angle.

[0020] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the electrical connector from another angle.

[0021] Figure 6 yes Figure 5 The diagram shows an exploded view of the electrical connector. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0023] Please see Figures 1 to 6 As shown, a preferred embodiment of the present invention discloses an electrical connector 100, which includes a rear insulator 10, a plurality of contact springs 20 connected to the rear insulator 10, and a front insulator 30 located at the longitudinal front end of the rear insulator 10. In this embodiment, the number of contact springs 20 can be set to one, two, three or more, preferably three.

[0024] Please see Figures 2 to 6 As shown, the rear insulator 10 is integrally injection molded onto the contact spring 20 and has a main body 11 and several protruding ribs 12 extending longitudinally forward from the main body 11. The protruding ribs 12 are arranged side by side in the transverse direction. The contact spring 20 has a holding part 21 fixed in the main body 11 of the rear insulator 10, a cantilever part 22 extending longitudinally forward from the holding part 21, and an outer connecting part 23 bent downward from the longitudinal middle section of the holding part 21; that is, the main body 11 of the rear insulator 10 fixes the holding part 21 of the contact spring 20, and the lower surface of the outer connecting part 23 is exposed on the bottom surface of the rear insulator 10.

[0025] At least one of the contact springs 20 is provided with a reinforcing arm 24 extending longitudinally forward from the lateral side of the holding portion 21, the reinforcing arm 24 being held within a corresponding protruding rib portion 12. Specifically, the reinforcing arm 24 of the contact spring 20 is provided with a connecting portion 241 extending outward from the lateral side of the holding portion 21, and an extension arm 242 bending upward from the connecting portion 241 and extending longitudinally forward. The connecting portion 241 is embedded within the main body portion 11, while the extension arm 242 is held within the protruding rib portion 12. The reinforcing arm 24 is also provided with several slots 243 located on the extension arm 242, the protruding rib portion 12 filling the several slots 243 of the extension arm 242 to ensure that the extension arm 242 is stably held within the protruding rib portion 12.

[0026] As can be seen from the above, the rear insulator 10 is injection molded onto the retaining portion 21 and reinforcing arm 24 of the contact spring 20 in one step, and the protruding rib portion 12 and the cantilever portion 22 of the contact spring 20 are spaced apart in the lateral direction. The front insulator 30 is injection molded onto the longitudinal front end of the main body portion 11 of the rear insulator 10 in two steps, and the front insulator 10 has a hollow portion 31 extending longitudinally and a grid portion 32 spaced apart from the hollow portion 31. The cantilever portion 22 of the contact spring 20 is accommodated in the hollow portion 31, and the protruding rib portion 12 is located at the grid portion 32. Specifically, the front insulator 30 has a material escape groove 321 that extends vertically through the grid portion 32, and the protruding rib portion 12 is accommodated in the material escape groove 321.

[0027] In this embodiment, taking three contact springs 20 as an example, there are three hollow portions 11 arranged side by side in the transverse direction, and the cantilever portion 22 of the contact spring 20 is accommodated in the corresponding hollow portion 31. Meanwhile, the two outer contact springs 20 do not have reinforcing arms, while the middle contact spring 20 has two reinforcing arms 24 extending longitudinally forward from both sides of the holding portion 21. The two reinforcing arms 24 are integrally formed within the protruding rib portion 12 of the rear insulator 10, and the protruding rib portion 12 and the reinforcing arms 24 are located within the grid portion 32 of the front insulator 30 to enhance the strength of the front insulator 30.

[0028] Specifically, the front insulator 30 has an annular portion 33 located at the longitudinal front end of the hollow portion 31. The annular portion 33 protrudes upward from its top surface and has a through hole 331 extending vertically through the annular portion 33, which connects to the corresponding hollow portion 31. The contact spring 20 has a protrusion 221 located at the longitudinal front end of the cantilever portion 22. The protrusion 221 is received within the through hole 331 and protrudes upward from the top surface of the annular portion 33. The protrusion 221 protrudes into the through hole 331 and is surrounded by the annular portion 33, thus the annular portion 33 protects the protrusion 221. Simultaneously, the rib 12 of the rear insulator 10 extends longitudinally to the through hole 331, meaning the longitudinal length of the rib 12 and the reinforcing arm 24 can approximately cover the entire area of ​​the front insulator 30, thereby increasing the overall strength of the front insulator 30.

[0029] The front insulator 30 also has a connecting portion 34 located at the longitudinal rear end of the hollow portion 31. The thickness of the connecting portion 34 is less than the thickness of other parts of the front insulator 30, and the connecting portion 34 is injection molded at the longitudinal front end of the main body portion 11 of the rear insulator 10. Specifically, the main body portion 11 has a limiting groove 14 located at the longitudinal front end, and the connecting portion 34 of the front insulator 30 has a protruding ridge 340 that is accommodated in the limiting groove 14. The protruding ridge 340 directly overflows glue to fill the limiting groove 14, playing a limiting role in the horizontal and vertical directions, so that the front and rear insulators are accurately aligned.

[0030] The joint 34 is further provided with several protrusions 341 extending longitudinally rearward and through holes 342 penetrating the protrusions 341 vertically, and a retaining part 21 for a contact spring 20 is provided between two adjacent protrusions 341. The main body 11 of the rear insulator 10 is provided with a groove 13 corresponding to receiving the protrusions 341 and a pin 131 protruding upward from the bottom wall of the groove 13. The protrusions 341 are filled in the groove 13 and the pin 131 is filled in the through hole 342. The above fit makes the front and rear insulators tightly connected.

[0031] The main body 11 of the rear insulator 10 is also provided with a front positioning hole 15 spaced laterally from the groove 13 and a rear positioning hole 16 located longitudinally behind the front positioning hole 15. The front positioning hole 15 penetrates the main body 11 of the rear insulator 10 vertically, and part of the upper and lower surfaces of the retaining part 21 are exposed in the front positioning hole 15. The rear positioning hole 16 penetrates the main body 11 of the rear insulator 10 vertically, and the upper surface of the external part 23 is exposed in the rear positioning hole 16. Further, at least part of the contact spring 20 is provided with a through hole 211 penetrating the retaining part 21. The through hole 211 is provided corresponding to the front positioning hole 15, and the diameter of the through hole 211 is smaller than the diameter of the front positioning hole 15. In order to prevent insufficient glue in injection molding, the positioning hole is added on the basis of the traditional injection molding process of clamping the contact spring 20 from the top and bottom. The workpiece inside the hole pushes the contact spring 20, which solves the problem of insufficient glue at the thinnest part and also plays a role in heat dissipation of the conductor.

[0032] In this invention, at least one of the contact springs 20 is provided with a reinforcing arm 24 extending longitudinally forward from the lateral side of the self-holding portion. The reinforcing arm 24 is located within the grid portion 32 of the front insulator 30, thereby increasing the strength of the front insulator 30 and making the front insulator 30 less prone to warping.

[0033] In summary, the above are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of the present utility model should still fall within the scope of the present utility model patent.

Claims

1. An electrical connector, comprising a rear insulator, a plurality of contact springs connected to the rear insulator, and a front insulator located at a longitudinally forward end of the rear insulator, wherein the contact springs are provided with a retaining portion fixed within the rear insulator and a cantilever portion extending longitudinally forward from the retaining portion, the front insulator is provided with a longitudinally extending hollow portion and a grid portion spaced apart from the hollow portion, and the cantilever portion is accommodated within the hollow portion; characterized in that: At least one of the contact springs is provided with a reinforcing arm extending longitudinally forward from the lateral side of the retaining portion, the reinforcing arm being located within the grid portion of the front insulator.

2. The electrical connector as described in claim 1, characterized in that: The rear insulator has a main body portion for fixing the contact spring and several protruding rib portions extending longitudinally forward from the main body portion, and the reinforcing arm is fixed in the corresponding protruding rib portion.

3. The electrical connector as described in claim 2, characterized in that: The front insulator has a through hole at the longitudinal front end of the hollow part, and the contact spring has a protrusion at the longitudinal front end of the cantilever part. The protrusion extends into the through hole, and the rib extends longitudinally to the through hole.

4. The electrical connector as described in claim 2, characterized in that: The reinforcing arm of the contact spring is provided with a connecting portion extending outward from the lateral side of the holding portion, an extension arm bending upward from the connecting portion and extending forward in the longitudinal direction, and several slots located on the extension arm, and the protruding ribs filling the slots of the extension arm.

5. The electrical connector as described in claim 2, characterized in that: The rear insulator is integrally injection molded onto the retaining portion and the reinforcing arm of the contact spring, and the protruding rib and the cantilever portion of the contact spring are spaced apart in the lateral direction.

6. The electrical connector as described in claim 5, characterized in that: The front insulator is injection molded at the longitudinal front end of the main body of the rear insulator, and the front insulator is provided with a material escape groove that runs vertically through the grid portion, and the protruding rib is accommodated in the material escape groove.

7. The electrical connector as claimed in claim 5, characterized in that: The front insulator has a joint portion located at the longitudinal rear end of the hollow portion. The joint portion is injection molded at the longitudinal front end of the main body of the rear insulator. The main body has a limiting groove located at the longitudinal front end, and the joint portion of the front insulator has a protruding ridge that is accommodated in the limiting groove.

8. The electrical connector as claimed in claim 7, characterized in that: The joint is provided with several protrusions extending longitudinally backward and through holes penetrating the protrusions vertically. The main body is provided with grooves corresponding to receiving the protrusions and pins protruding upward from the bottom wall of the grooves. The pins are filled in the through holes.

9. The electrical connector as claimed in claim 8, characterized in that: The main body is provided with a front positioning hole that is spaced laterally from the groove. The front positioning hole penetrates the main body vertically, and a portion of the upper and lower surfaces of the retaining part are exposed inside the front positioning hole.

10. The electrical connector as claimed in claim 1, characterized in that: At least one of the contact springs is provided with two reinforcing arms that extend longitudinally forward from both sides of the retaining portion.

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