CN217215214U - Electric connector with mixed power supply and signal - Google Patents

Abstract

The invention relates to the technical field of electronics, and provides an electric connector with a mixed power supply and a signal, which comprises an insulator, an electric component and a signal component, wherein the insulator is provided with a cavity communicated with an electric plug cavity and a terminal hole communicated with the signal plug cavity, and the terminal hole comprises an upper terminal hole and a lower terminal hole; the electric component is arranged in the insulator and comprises a contact group and a rear seat for positioning the contact group, the contact group comprises an inner contact pair and an outer contact pair, the contact parts of the inner contact pair and the outer contact pair are positioned in the electric plug cavity, and the rear seat comprises an upper clamping block matched with the upper clamping hole and a lower clamping block matched with the lower clamping hole; the signal subassembly inserts the group including connecing, inserts the group including elasticity section department in the upper terminal and the lower terminal of signal plug cavity, the upper terminal is corresponding with lower terminal and respectively includes the canned paragraph that links to each other with the elasticity section, the upper terminal passes through the canned paragraph of upper terminal and interferes with the upper terminal hole, the lower terminal passes through the lower terminal canned paragraph and interferes with the lower terminal hole to it fixes in the insulator to connect the group, has solved the technical problem of multiconductor contact through aforementioned structure, has reached the effect of easily making and lowering costs.

Description

Electric connector with mixed power supply and signal

Technical Field

The invention relates to the technical field of electronics, in particular to an electric connector with a mixed power supply and signal.

Background

The mixed power and signal electric connector in the prior art can generally realize the transmission of power and signals between the board and the board. A power supply contact assembly and a signal contact assembly are arranged in the electric connector shell which is mixed, one end of a power supply contact piece in the power supply contact assembly is in plug conduction with a contact piece matched with the outside, and the other end of the power supply contact piece is in plug conduction/welding conduction with a PCB (printed circuit board) matched with the outside; similarly, one end of the signal contact piece is in conductive contact with the adaptive contact piece, and the other end of the signal contact piece is in plug-in connection/welding conduction with the PCB through the signal pin. When the electric connector is used, the through-current capacity of the electric connector is limited because the contact points of the power supply contact pieces are fewer, and if the contact points of the power supply contact pieces are increased, the manufacturing difficulty is increased; secondly, the through-flow index of the product is increased, and the current product is difficult to meet the through-flow requirement if the structure of the current product is not optimized.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an electrical connector for mixing power and signal.

In order to achieve the purpose, the technical scheme applied by the invention is as follows:

an electrical connector for mixed power and signal loading, comprising an insulator, an electrical component and a signal component, wherein:

the front of the insulator is provided with an electrical plug cavity and a signal plug cavity, the back of the insulator is provided with a cavity communicated with the electrical plug cavity and a terminal hole communicated with the signal plug cavity, and the terminal hole comprises an upper terminal hole and a lower terminal hole;

the electric component is arranged in the insulator and comprises a contact group and a rear seat for positioning the contact group, the contact group comprises an inner contact pair and an outer contact pair, the contact parts of the inner contact pair and the outer contact pair are positioned in the electric plug cavity, and the rear seat comprises an upper clamping block matched with the upper clamping hole and a lower clamping block matched with the lower clamping hole;

the signal subassembly inserts the group including connecing, inserts the group including elasticity section department in the upper terminal and the lower terminal of signal plug cavity, the upper terminal is corresponding with lower terminal and respectively includes the canned paragraph that links to each other with the elasticity section, the upper terminal passes through the upper terminal canned paragraph and interferes with the upper terminal hole, the lower terminal passes through the lower terminal canned paragraph and interferes with the lower terminal hole to it stabilizes in the insulator to insert the group.

In the present embodiment, it is preferable that: the rear surface of the insulator extends backwards along two sides respectively and forms a cavity tail part and a hole tail part, the cavity tail part and the hole tail part are of symmetrical structures, a partition plate part is arranged between the cavity tail part and the hole tail part, a cavity rear gap is formed between the partition plate part and the cavity tail part, and a hole rear gap is formed between the partition plate part and the hole tail part.

In the present embodiment, it is preferable that: positioning columns matched with the PCB are vertically arranged on the back surfaces of the cavity tail part and the hole tail part respectively, a supporting plate is formed by extending the back surface of the hole back gap close to the front surface of the insulator, the front surface of the supporting plate is concave to the front surface of the insulator, a step-shaped surface is formed by the front surface of the supporting plate and the front surface of the insulator, and a clamping groove is formed by downward sinking the front surface of the insulator close to the front side of the supporting plate.

In the present embodiment, it is preferable that: the electrical cavity has an upper wall and an opposite lower wall, the upper wall has an upper groove, the upper groove has a top, the lower wall has a lower groove, the lower groove has a bottom; the accommodating cavity is divided into a front cavity and a rear cavity, and the height of the front cavity is not less than the height from the upper wall to the lower wall of the electrical plug cavity and not more than the height of the top of the upper groove and the bottom of the lower groove of the electrical plug cavity; the rear cavity forms a stop surface at the rear of the front cavity, the upper clamping hole is close to the stop surface and penetrates through the rear cavity, and the lower clamping hole corresponds to the upper clamping hole and penetrates through the rear cavity.

In the present embodiment, it is preferable that: the contact group comprises a plurality of inner contact pairs and outer contact pairs, the inner contact pairs comprise two inner contact pieces which are positioned on the rear seat relatively and correspond to the contact parts inwards, and the outer contact pairs comprise two outer contact pieces which are overlapped on the outer sides of the two inner contact pieces in a corresponding mode and correspond to the contact parts inwards; the rear housing includes opposing upper and lower contact slots, each upper contact slot locating an inner contact and an outer contact overlying the inner contact, the lower contact slot locating another inner contact and another outer contact overlying the other inner contact.

In the present embodiment, it is preferable that: the inner contact and the contact part of the other inner contact on the rear seat are symmetrical inwards, and the contact part of the outer contact and the contact part of the other outer contact on the rear seat are also symmetrical inwards, so that the inner contact pair is positioned between the outer contact and the other outer contact on the rear seat, wherein: the outer contact comprises an arm, and the outer contact part is close to the free end of the outer contact arm; the inner contact includes an arm, the inner contact portion being proximate a free end of the inner contact arm, the outer contact arm having a length greater than the inner contact arm so that the outer contact portion overhangs the front of the inner contact portion on the rear seat.

In the present embodiment, it is preferable that: the upper surface of the rear seat forms a step surface from front to back, the upper clamping block protrudes out of the step surface, and the lower clamping block is arranged corresponding to the upper clamping block on the lower surface of the upper surface of the rear seat.

In the present embodiment, it is preferable that: the upper terminal elastic section is provided with an upper contact part, the lower terminal elastic section is provided with a lower contact part, and the upper contact part corresponds to the lower contact part in the signal insertion cavity; the upper terminal fixing section extends backwards to form an upper terminal pin, and the lower terminal fixing section extends backwards to form a lower terminal pin; the lower terminal pin and the upper terminal pin are downward and the height of the free end surface of each terminal pin is in the same plane.

In the present embodiment, it is preferable that: the signal assembly further comprises a rear cover, the rear cover is formed by injection molding and comprises a main body part and a buckling plate part, the main body part is provided with a notch behind the adaptive hole in an encapsulation mode, the buckling plate part is flush with the upper plane of the main body part and extends forwards, a buckling block is downwards formed on the buckling plate part, buckles are respectively formed on two sides of the buckling plate part, the rear cover is buckled on the supporting plate through the buckling plate part, and the buckling block is buckled into the clamping groove.

In the present embodiment, it is preferable that: the signal plug cavity is provided with an upper wall and a lower wall, the upper wall is provided with an upper groove, and the lower wall is provided with a lower groove; the upper terminal hole is communicated with the upper groove, the top of the upper terminal hole is horizontal to the top of the upper groove, the lower terminal hole is connected with the lower groove, and the bottom of the lower terminal hole is horizontal to the bottom of the lower groove.

Compared with the prior art, the invention has the beneficial effects that:

firstly, the electric connector can effectively improve the current capacity on the premise of unchanged volume through an optimized structure, and the optimized structure comprises a contact group consisting of a plurality of outer contact elements and inner contact elements and conductive contact with the same adaptive conductive element so as to increase the contact parts on the same circuit, thereby improving the current capacity of the electric connector on the premise of meeting the temperature rise;

the electric connector/terminal comprises an inserting end part, a tail part and a connecting part/fixing part, the single separating components are combined into a whole through the rear seat and assembled in the insulator, and the connecting part/terminal is directly clamped on the rear seat so as to be convenient to assemble, so that the manufacturing cost is effectively reduced;

and compared with 4 contact points in the prior art, the number of the contact points is increased to be more than 4, so that the transmission flux is increased, and the through-current capacity is effectively improved in the same space.

Drawings

Fig. 1 is a perspective view schematically illustrating the present embodiment.

Fig. 2 is another perspective view of the present embodiment.

Fig. 3 is an exploded schematic view of the present embodiment.

Fig. 4 is a perspective view of the insulator of fig. 3 from another perspective.

Fig. 5 is another view of the electrical component of fig. 3 and an exploded view (of the electrical component) that differs from the exploded view of fig. 3.

Fig. 6 is a perspective view of the signal assembly of fig. 3 from another perspective.

Fig. 7 is a front view of the present embodiment.

Fig. 8 is a cross-sectional view a-a of fig. 7.

Fig. 9 is a cross-sectional view B-B of fig. 7.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. Moreover, in the interest of brevity and understanding, only one of the components having the same structure or function is illustrated schematically or designated in some of the drawings. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

In the embodiments shown in the drawings, the directions such as up, down, left, right, front, and rear are used to explain the structure and movement of various components of the present invention not absolutely but relatively. These illustrations are appropriate when these components are in the positions shown in the figures. If the description of the positions of these components changes, the indication of these directions changes accordingly.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

In the present embodiment, as shown in fig. 1 to 5, an electrical connector for power and signal mixed loading is provided, which includes an insulator 10, and an electrical component 20 and a signal component 30 accommodated in the insulator 10, wherein:

the insulator 10 has an electrical plug 11 for receiving an external electrical component (not shown) and a signal plug 12 for receiving an external signal component (not shown), and the signal plug 12 and the electrical plug 11 are arranged in a left-right direction on the insulator 10. In this example, the electrical cavity 11 extends backward and forms an upper groove 111 and a lower groove 112 on the upper wall and the lower wall of the electrical cavity 11, respectively, and the signal cavity 12 extends backward and forms an upper groove 121 and a lower groove 122 on the upper wall and the lower wall of the signal cavity 12, respectively; a cavity 13 communicated with the electrical plug cavity 11 and a terminal hole 14 communicated with the signal plug cavity 12 are respectively formed by extending forwards at the back of the insulator 10, the cavity 13 is divided into a front cavity (not shown) and a back cavity (not shown), the height of the front cavity is not less than the height from the upper wall to the lower wall of the plug cavity and not more than the height from the top of the upper slot 121 of the plug cavity and the bottom of the lower slot 122 of the plug cavity; the rear cavity is extended upwards to form a stop surface 131 above the rear cavity, an upper clamping hole 132 is formed in the upper wall of the rear cavity close to the stop surface 131, and a lower clamping hole 133 is formed in the lower wall of the rear cavity opposite to the upper clamping hole 132; the terminal hole 14 includes an upper terminal hole 141 and a lower terminal hole 142, the upper terminal hole 141 communicates with the upper groove 121, and the top (not labeled) of the upper terminal hole is horizontal to the top (not labeled) of the upper groove 121, the lower terminal hole 142 connects with the lower groove 142, and the bottom (not labeled) of the lower terminal hole is horizontal to the bottom (not labeled) of the lower groove 122; the rear surface of the insulator 10 extends backwards along two sides to form a cavity tail part 15 and a hole tail part 16 which are symmetrical, a partition part 17 is formed between the cavity tail part 15 and the hole tail part 16 (namely, at the junction of the cavity 13 and the terminal hole 14), a cavity rear notch 18 is formed between the partition part 17 and the cavity tail part 15, and a hole rear notch 19 is formed between the partition part 17 and the hole tail part 16. In this example, the cavity tail 1 and the hole tail 16 have back surfaces lower than the back surface of the insulator 10 and respectively stand with positioning posts 151 and 161, the positioning posts 151 and 161 are adapted to an external member (such as a PCB), a supporting plate 191 is formed in the hole rear notch 10 and extends to the back surface close to the front surface of the insulator 10, and the front surface of the supporting plate 191 is recessed into the front surface of the insulator 10, so that the front surface of the supporting plate 191 and the front surface of the insulator 10 form a stepped surface (not labeled); the front surface of the insulator 10, which is connected to the front side of the plate 191, is recessed downward to form a catching groove 192, so that a long groove wall (not labeled) at the rear side of the catching groove 192 is formed "coplanar" with the front side of the plate 191.

In the present embodiment, with continuing reference to fig. 1 to 5 and with combined reference to fig. 7 to 9, the electrical component 20 in the figures includes a contact group 21 and a rear seat 22 for aligning and positioning the contact group 21 together, the contact group 21 includes a plurality of inner contact pairs 211 and outer contact pairs 212, the inner contact pairs 211 include two inner contacts 2111 oppositely positioned on the rear seat 22, and the outer contact pairs 212 include two outer contacts 2121 respectively stacked outside the two inner contacts 2111 in a corresponding manner; the rear seat 22 is formed of an insulating material and includes a plurality of upper contact grooves 221 and lower contact grooves 222 which are opposite to each other, the upper contact groove 221 locates an inner contact 2111 and an outer contact 2121 superimposed on the outer side of the inner contact, the lower contact groove 222 locates another inner contact 2111 and another outer contact 2121 superimposed on the outer side of the inner contact, the inner contact and another inner contact are inwardly symmetrical with respect to a contact portion (not labeled) on the rear seat 22, and the outer contact and another outer contact are also inwardly symmetrical with respect to a contact portion (not labeled) on the rear seat 22, so that the inner contact pair 211 is located between the one outer contact and another outer contact on the rear seat 22, and since the length of the arm (B) of the outer contact 2121 is longer than that of the arm (B) of the inner contact 2111, the contact portion of the arm (B) of the outer contact is suspended in front of the contact portion of the inner contact arm (B) on the rear contact seat 22. In this example, the upper contact slot 221 and the lower contact slot 222 have a front slope 2211 and a back slope 2221, respectively, and the inner contact 2111 and the outer contact 2121 have a sloped section (w) that fits the upper contact slot front slope 2211 and the lower contact slot back slope 2221, respectively, and the sloped section is connected between the contact arm of the front section and the guide section (y) of the rear section. In this example, the upper surface of the rear holder 22 (i.e., the upper side surface of the wall of the upper contact groove 221) is formed with a step surface 223 from the front to the rear, an upper latch 224 that fits into the upper latch hole 132 is projected on the step surface, and a lower latch 225 that fits into the lower latch hole 133 is provided in a manner corresponding to the upper latch 224 with respect to the lower surface of the upper surface. In this embodiment, when the electrical component 20 is loaded into the cavity 13, the front surface abuts against the stop surface 131, so that the electrical component 20 cannot move forward in the cavity; then, the upper fixture block 224 interferes with the upper fixture hole 132 and the lower fixture block 225 interferes with the lower fixture hole 133, so that the front half part of the electrical component 20 is located in the cavity, and the rear half part of the electrical component is located in the cavity rear gap 18 and cannot be naturally separated, so that the electrical component 20 and the insulator 10 are combined into a whole.

In the present embodiment, referring to fig. 6, fig. 7 and fig. 9 with continued reference to fig. 1 to fig. 3 and fig. 4, the signal assembly 30 includes a plug set 31 and a rear cover 32, the plug set 31 includes an upper terminal 311 and a lower terminal 312, the upper terminal 311 and the lower terminal 312 are correspondingly disposed in the signal insertion cavity 12, so that an upper contact portion (not labeled) of the upper terminal 311 corresponds to a lower contact portion of the lower terminal 312. In this example, the upper terminal 311 is composed of a plurality of upper terminals with the same structure, and the lower terminal 312 is composed of a plurality of lower terminals with the same structure, wherein: the upper terminal comprises a fixed section 3111, an elastic section 3112 connected with the front end of the fixed section and an end pin 3113 connected with the rear end of the fixed section, and the upper contact part is positioned on the elastic section of the upper terminal; the lower terminal fixing section 3121 and the elastic section 3122 of the front end of the fixing section are symmetrical to the upper terminal fixing section 3111 and the elastic section 3112, respectively, and the lower contact portion is located at the lower terminal elastic section and symmetrical to the upper contact portion; the lower terminal pin 3123 faces the same direction and has the same height as the upper terminal pin 3113. In this embodiment, each terminal tie plate is formed by stamping, protruding stabs (not labeled) are disposed on two sides of each fixing section, the upper terminal fixing section 3111 is located in the upper terminal hole 141 and is interfered by the protruding stabs to stabilize the upper terminal and the insulator 10 into a whole, the upper terminal elastic section 3112 is located in the signal insertion cavity 12, similarly, the lower terminal fixing section 3121 is located in the lower terminal hole 142 and is interfered by the protruding stabs to stabilize the lower terminal and the insulator 10 into a whole, the lower terminal sub-elastic section 3122 is located in the signal insertion cavity 12, if an external force is applied (if an external signal element is inserted into the signal insertion cavity 12), the upper terminal sub-elastic section 3112 elastically moves between the upper groove 121 or the upper groove and the signal insertion cavity, and the opposite lower terminal sub-elastic section 3122 elastically moves between the lower groove 122 or the lower groove and the signal insertion cavity. The rear cover 32 is formed by injection molding and comprises a main body 321 which is matched with the rear notch 19 of the hole in a packaging mode and a buckling plate 322 which is flush with the upper plane of the main body and extends forwards, wherein a buckling block 323 is formed downwards on the buckling plate 322, and buckles 324 are formed on two sides of the buckling plate respectively. In this embodiment, the rear cover 32 is fastened on the supporting plate 191 through the fastening plate 322, the fastening block 323 is fastened in the fastening groove 192, and the two side fasteners 324 interfere with the corresponding structures on the inner side of the hole tail 16 and the partition 17 corresponding to the inner side of the hole tail to seal the hole rear notch 19 and cover and assist in stably fastening the tail of the plug assembly 31, thereby achieving the purpose of effectively protecting the electrical components. In this example, a bending part (f) is arranged between the lower terminal pin and the fixing section connected with the lower terminal pin, and the lower terminal pin is vertically downward through the bending part; the upper terminal pin and the fixing section connected with the upper terminal pin are also provided with a bending part (F), the lower terminal pin and the upper terminal pin are enabled to face towards the same direction through the bending part, the lower terminal pin and the free end (z) end face of the upper terminal pin are in the same plane, the rear cover is formed by injection molding and comprises a main body part and a buckle plate part, the main body part is provided with a notch 19 behind an encapsulation type adapting hole, the buckle plate part is flush with the upper plane of the main body part and extends forwards, and a buckle block 323 buckled into the clamping groove 192 is formed downwards along the front side face of the buckle plate part. The lower surface of the rear cover main body 321 is hollowed out upwards to form a terminal groove 324 with a front notch (not labeled) and a lower notch (not labeled), the upper and lower terminals comprise a fixing section rear half section, a bending section and terminal pins which are all positioned in the terminal groove 324, wherein the free end of each terminal pin extends out of the terminal groove downwards.

In the foregoing embodiments, the descriptions of the respective embodiments have their respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides an electric connector that power and signal mixed loading, includes insulator, electrical property subassembly and signal subassembly which characterized in that:

the front of the insulator is provided with an electric plug cavity and a signal plug cavity, the back of the insulator is provided with a cavity communicated with the electric plug cavity and a terminal hole communicated with the signal plug cavity, and the terminal hole comprises an upper terminal hole and a lower terminal hole;

the electric component is arranged in the insulator and comprises a contact group and a rear seat for positioning the contact group, the contact group comprises an inner contact pair and an outer contact pair, the contact parts of the inner contact pair and the outer contact pair are positioned in the electric plug cavity, and the rear seat comprises an upper clamping block matched with the upper clamping hole and a lower clamping block matched with the lower clamping hole;

the signal assembly is including connecing the group of inserting, connects the group of inserting including elastic segment position in the signal insert the chamber last terminal and lower terminal, goes up the terminal and corresponds with lower terminal and include the canned paragraph that links to each other with the elastic segment respectively, and the upper terminal passes through the canned paragraph of going up and interferes with the upper terminal hole, and the lower terminal passes through the canned paragraph of going down and interferes with lower terminal hole to connect the group of inserting to stabilize in the insulator.

2. The electrical connector of claim 1, wherein:

the rear surface of the insulator extends backwards along two sides respectively and forms a cavity tail part and a hole tail part, the cavity tail part and the hole tail part are of symmetrical structures, a partition plate part is arranged between the cavity tail part and the hole tail part, a cavity rear gap is formed between the partition plate part and the cavity tail part, and a hole rear gap is formed between the partition plate part and the hole tail part.

3. The electrical connector of claim 2, wherein:

positioning columns matched with the PCB are vertically arranged on the back surfaces of the cavity tail part and the hole tail part respectively, a supporting plate is formed by extending the back surface of the hole back gap close to the front surface of the insulator, the front surface of the supporting plate is concave to the front surface of the insulator, a step-shaped surface is formed by the front surface of the supporting plate and the front surface of the insulator, and a clamping groove is formed by downward sinking the front surface of the insulator close to the front side of the supporting plate.

4. The electrical connector of claim 3, wherein:

the electrical cavity has an upper wall and an opposite lower wall, the upper wall has an upper groove, the upper groove has a top, the lower wall has a lower groove, the lower groove has a bottom; the accommodating cavity is divided into a front cavity and a rear cavity, and the height of the front cavity is not less than the height from the upper wall to the lower wall of the electrical plug cavity and not more than the height of the top of the upper groove and the bottom of the lower groove of the electrical plug cavity; the rear cavity forms a stop surface at the rear of the front cavity, the upper clamping hole is close to the stop surface and penetrates through the rear cavity, and the lower clamping hole corresponds to the upper clamping hole and penetrates through the rear cavity.

5. The electrical connector of claim 4, wherein:

the contact group comprises a plurality of inner contact pairs and outer contact pairs, the inner contact pairs comprise two inner contact pieces which are positioned on the rear seat relatively and correspond to the contact parts inwards, and the outer contact pairs comprise two outer contact pieces which correspond to the contact parts inwards and are respectively overlapped on the outer sides of the two inner contact pieces in a corresponding mode; the rear housing includes a plurality of opposing upper and lower contact slots, each upper contact slot locating an inner contact and an outer contact overlying the inner contact, and the lower contact slot locating another inner contact and another outer contact overlying the other inner contact.

6. The electrical connector of claim 5, wherein:

the inner contact and the contact portion of the other inner contact on the rear seat are symmetrical inwards, and the contact portion of the outer contact and the contact portion of the other outer contact on the rear seat are also symmetrical inwards, so that the inner contact pair is positioned between the outer contact and the other outer contact on the rear seat, wherein: the outer contact comprises an arm, and the outer contact part is close to the free end of the outer contact arm; the inner contact includes an arm, the inner contact portion being proximate a free end of the inner contact arm, the outer contact arm having a length greater than the inner contact arm so that the outer contact portion overhangs the front of the inner contact portion on the rear seat.

7. The electrical connector of claim 6, wherein:

the upper surface of the rear seat forms a step surface from front to back, the upper clamping block protrudes out of the step surface, and the lower clamping block is arranged corresponding to the upper clamping block on the lower surface of the upper surface of the rear seat.

8. The electrical connector of claim 7, wherein:

the upper terminal elastic section is provided with an upper contact part, the lower terminal elastic section is provided with a lower contact part, and the upper contact part corresponds to the lower contact part in the signal insertion cavity; the upper terminal fixing section extends backwards to form an upper terminal pin, and the lower terminal fixing section extends backwards to form a lower terminal pin; the lower terminal pin and the upper terminal pin are downward, and the height of the free end surface of each terminal pin is in the same plane.

9. The electrical connector of claim 8, wherein:

the signal assembly further comprises a rear cover, the rear cover is formed by injection molding and comprises a main body part and a buckling plate part, the main body part is provided with a notch behind the adaptive hole in an encapsulation mode, the buckling plate part is flush with the upper plane of the main body part and extends forwards, a buckling block is downwards formed on the buckling plate part, buckles are respectively formed on two sides of the buckling plate part, the rear cover is buckled on the supporting plate through the buckling plate part, and the buckling block is buckled into the clamping groove.

10. The electrical connector of claim 9, wherein:

the signal plug cavity is provided with an upper wall and a lower wall, the upper wall is provided with an upper groove, and the lower wall is provided with a lower groove; the upper terminal hole is communicated with the upper groove, the top of the upper terminal hole is horizontal to the top of the upper groove, the lower terminal hole is connected with the lower groove, and the bottom of the lower terminal hole is horizontal to the bottom of the lower groove.

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