High-speed small card edge connector and terminal structure

Abstract

The utility model discloses a high-speed small card edge connector and a terminal structure, and relates to the technical field of electric connectors, the terminal structure comprises a force arm, a base body and a welding part which are connected in sequence, one end of the force arm deviating from the base body is connected with a contact part; one side of the base body is at least connected with one fixing part, and the fixing part extends in the direction away from the base body; the base body comprises a first connecting part and a second connecting part, the first connecting part comprises a widened section and an impedance adjusting section which are connected with each other, the width of the widened section is L1, the width of the impedance adjusting section is L2, L1 is larger than L2, the widened section is provided with a material digging hole, and the welding part is connected with the second connecting part. The terminal structure provided by the technical scheme of the utility model can reduce the characteristic impedance, thereby reducing the loss and meeting the requirement of high transmission rate.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a high-speed small card edge connector and a terminal structure. Background Art

[0002] With the development of electronic science and technology today, electrical connectors have played an important role in the field of electronic technology. The rate of information transmission is getting faster and faster, so the high-frequency requirements for electrical connectors are getting higher and higher. Not only are electrical connectors required to support fast transmission rates, but they also need to improve the stability of signal transmission of electrical connectors.

[0003] Based on the requirement that the connector meets high frequency, the high-frequency characteristic impedance of the terminal in the connector has higher requirements. However, under the current high transmission rate requirements, the loss of the connector cannot meet the requirements. Therefore, it is necessary to propose a terminal structure to solve the above problem. Utility Model Content

[0004] The main purpose of the utility model is to provide a terminal structure, aiming to solve the problem that the current connector loss cannot meet the requirement of high transmission rate.

[0005] To achieve the above-mentioned purpose, the terminal structure proposed in the utility model comprises: a force arm, a base and a welding part connected in sequence, wherein:

[0006] One end of the force arm facing away from the base is connected with a contact portion;

[0007] At least one holding portion is connected to one side of the base, and the holding portion extends in a direction away from the base;

[0008] The base includes a first connecting part and a second connecting part, the first connecting part includes a widening section and an impedance adjustment section connected to each other, the width of the widening section is L1, the width of the impedance adjustment section is L2, and L1 is greater than L2, the widening section is provided with a material removal hole, and the welding part is connected to the second connecting part.

[0009] In one embodiment, the base further includes a material strip connecting portion, the material strip connecting portion and the holding portion are arranged correspondingly, and the two are respectively located on two opposite sides of the base.

[0010] In one embodiment, two holding portions are provided, one holding portion is provided close to the force arm, and the other holding portion is provided between the first connecting portion and the second connecting portion.

[0011] In one embodiment, the impedance adjustment section includes a first section and a second section, the first section and the second section are respectively connected to two opposite ends of the widened section, the width of the second connecting portion is L3, and L2 is equal to L3, and the impedance adjustment section and the second connecting portion are located on the same straight line.

[0012] In one embodiment, a process cut is provided on one side of the base body, and forms a first cut segment, a second cut segment and a third cut segment, the first cut segment and the second cut segment are respectively connected to the two ends of the first connecting part, and the third cut segment is connected to an end of the second connecting part away from the welding part.

[0013] In one embodiment, the widths of the first cut segment, the second cut segment and the third cut segment are equal.

[0014] In one embodiment, two opposite sides of the retaining portion are protruded with clamping points.

[0015] The utility model also provides a high-speed small card edge connector, comprising:

[0016] A first terminal structure;

[0017] A second terminal structure;

[0018] an insulator, wherein the insulator is provided with a plurality of first receiving grooves and a plurality of second receiving grooves, the first terminal structures correspond to the first receiving grooves one by one and are arranged in the first receiving grooves, the second terminal structures correspond to the second receiving grooves one by one and are arranged in the second receiving grooves, the insulator is provided with slots, and the first terminal structures and the second terminal structures extend into the slots respectively; and

[0019] A PCB board, wherein the first terminal structure and the second terminal structure are electrically connected to the PCB board respectively;

[0020] Wherein, the first terminal structure is the terminal structure as described above.

[0021] In one embodiment, a side wall of the slot is connected with a guiding slope.

[0022] In one embodiment, the high-speed small card edge connector further includes a shell, wherein the shell covers and is connected to an outer wall of the insulator.

[0023] The technical solution of the utility model adopts a widening section to increase the capacitance and improve the capacitive reactance by setting a widening section at the first connection part of the substrate, and a material hole is opened in the widening section to reduce the capacitance, and at the same time reduce the resonance between the signal terminals, reduce the characteristic impedance, and thus reduce the loss to meet the requirements of high transmission rate. The impedance adjustment end is used to adjust the impedance, the holding part is connected to the insulator to improve the stability, the contact part and the welding part are used to achieve electrical connection to transmit information, and the welding part also realizes the fixation of the terminal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a terminal structure embodiment provided by the utility model;

[0026] Figure 2 A schematic structural diagram of an embodiment of a high-speed small card edge connector provided by the utility model;

[0027] Figure 3 A schematic cross-sectional view of an embodiment of a high-speed small card edge connector provided by the utility model;

[0028] Figure 4 A schematic diagram of the structure of an electronic product laterally inserted into a slot of an embodiment of a high-speed small card edge connector provided by the utility model;

[0029] Figure 5 This is a structural schematic diagram of an electronic product obliquely inserted into a slot in an embodiment of a high-speed small card edge connector provided by the utility model.

[0030] Description of Figure Numbers:

[0031] 100, base; 110, first connecting portion; 111, widening section; 112, first section; 113, second section; 114, material hole; 120, second connecting portion; 130, material strip connecting portion;

[0032] 200, force arm;

[0033] 300, welding part;

[0034] 400. Contact Department;

[0035] 500, holding part;

[0036] 600, process incision; 610, first incision section; 620, second incision section; 630, third incision section;

[0037] 10. First terminal structure;

[0038] 20. Second terminal structure;

[0039] 30. insulator; 31. first receiving groove; 32. second receiving groove; 33. slot; 34. guide slope;

[0040] 40. PCB board;

[0041] 50. Shell.

[0042] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0046] In the prior art, based on the high-frequency requirements of the connector, the high-frequency characteristic impedance of the terminals in the connector has higher requirements. However, under the current high transmission rate requirements, the loss of the connector cannot meet the requirements. For example, the transmission rate of the PCIe4.0 version is required to reach 16Gbps, and the transmission rate of the PCIe 5.0 version is required to reach 32Gbps. The M.2 connector also mainly transmits PCIe signals. Under such high transmission rate requirements, the loss of the connector must be very low.

[0047] The utility model provides a terminal structure.

[0048] See also Figure 1 In one embodiment of the utility model, the terminal structure includes: a force arm 200, a base 100 and a welding portion 300 connected in sequence, wherein the end of the force arm 200 facing away from the base 100 is connected with a contact portion 400; one side of the base 100 is also connected with at least one holding portion 500, and the holding portion 500 extends in a direction away from the base 100; the base 100 includes a first connecting portion 110 and a second connecting portion 120, the first connecting portion 110 includes a widening section 111 and an impedance adjustment section connected to each other, the width of the widening section 111 is L1, the width of the impedance adjustment section is L2, and L1 is greater than L2, the widening section 111 is provided with a material digging hole 114, and the welding portion 300 is connected to the second connecting portion 120.

[0049] In the specific implementation process, the end of the force arm 200 away from the base 100 is arc-shaped, so that the force arm 200 has a certain elastic force. In this way, when the contact part 400 contacts with a product such as an electronic card, the force arm 200 can provide a certain clamping force, so that the contact part 400 and the electronic card remain in contact, thereby ensuring the stability of signal transmission. In this embodiment, the end of the contact part 400 extends obliquely and forms a guide part to guide the insertion of the electronic card.

[0050] The connection end of the retaining portion 500 is connected to the base 100, and the free end extends horizontally. Further, the retaining portion 500 has two opposite sides protruding with a clamping point, specifically, the upper and lower side walls of the retaining portion 500 are protruding with a clamping point, so that after the terminal structure is installed on the insulator 30, the clamping point abuts against the insulator 30, which can improve the stability of the terminal structure.

[0051] The width of the widening section 111 is L1, and the width of the impedance adjustment section is L2, L1 is greater than L2, that is, the width of the widening section 111 is greater than the width of the impedance adjustment section, and the increase in width can increase the capacitance and improve the capacitive reactance, and further a material hole 114 is opened in the widening section 111, and the material hole 114 is set through, and the material hole 114 is a long hole and extends vertically along the widening section 111. The setting of the material hole 114 further reduces the capacitance, and at the same time reduces the resonance between the signal terminals, reduces the characteristic impedance, thereby reducing the loss, and meets the requirements of high transmission rate.

[0052] The technical solution of the utility model increases capacitance and improves capacitive reactance by setting a widening section 111 on the first connecting portion 110 of the substrate 100, and opens a material hole 114 in the widening section 111 to reduce capacitance, thereby reducing resonance between signal terminals and characteristic impedance, thereby reducing loss. The impedance adjustment end is used to adjust impedance, the holding portion 500 is connected to the insulator 30 to improve stability, the contact portion 400 and the welding portion 300 are used to achieve electrical connection to transmit information, and the welding portion 300 also achieves the fixation of the terminal structure.

[0053] In one embodiment, the base 100 further includes a material strip connecting portion 130, which is correspondingly disposed to the retaining portion 500 and is located on opposite sides of the base 100, respectively, and the material strip connecting portion 130 protrudes from the side wall of the base 100 for easy connection.

[0054] Further, two retaining portions 500 are provided, one retaining portion 500 is arranged close to the force arm 200, and the other retaining portion 500 is arranged between the first connecting portion 110 and the second connecting portion 120. In this embodiment, the two retaining portions 500 are arranged on the base 100 at intervals, further improving the stability of the terminal structure installation. Among them, the upper retaining portion 500 is close to the force arm 200, and the lower retaining portion 500 is between the first connecting portion 110 and the second connecting portion 120. It can be understood that in another embodiment, there is only one retaining portion 500, and this retaining portion 500 is close to the retaining portion 500 of the force arm 200.

[0055] In one embodiment, the impedance adjustment section includes a first section 112 and a second section 113, the first section 112 and the second section 113 are respectively connected to opposite ends of the widening section 111, the width of the second connection portion 120 is L3, and L2 is equal to L3, and the impedance adjustment section and the second connection portion 120 are located on the same straight line. Specifically, the first section 112 is connected to one end of the widening section 111, and the second section 113 is connected to the other end of the widening section 111. The second connection portion 120 has the same width as the impedance adjustment section, and both play a role in adjusting impedance.

[0056] In one embodiment, a process cut 600 is provided on one side of the substrate 100, and a first cut segment 610, a second cut segment 620 and a third cut segment 630 are formed. The first cut segment 610 and the second cut segment 620 are respectively connected to the two ends of the first connecting portion 110, and the third cut segment 630 is connected to one end of the second connecting portion 120 away from the welding portion 300.

[0057] In the specific implementation process, there are three process cuts 600, which correspond to the first cut section 610, the second cut section 620 and the third cut section 630 respectively, and in this embodiment, there is a material strip connection portion 130 between the two cuts corresponding to the second cut section 620 and the third cut section 630. Among them, one end of the first cut section 610 is connected to the force arm 200, and the other end is connected to the first section 112 of the impedance adjustment section, and one end of the second cut section 620 is connected to the second section 113 of the impedance adjustment section, and the other end is connected to the third cut section 630, and the third cut section 630 is connected to the second connection portion 120. Further, the widths of the first cut section 610, the second cut section 620 and the third cut section 630 are equal to ensure the overall impedance.

[0058] refer to Figures 2 to 5 The utility model also proposes a high-speed small card edge connector, including: a first terminal structure 10, a second terminal structure 20, an insulator 30 and a PCB board 40, wherein the insulator 30 is provided with a plurality of first receiving grooves 31 and a plurality of second receiving grooves 32, the first terminal structure 10 corresponds to the first receiving grooves 31 one by one and is arranged in the first receiving grooves 31, the second terminal structure 20 corresponds to the second receiving grooves 32 one by one and is arranged in the second receiving grooves 32, the insulator 30 has a slot 33, the first terminal structure 10 and the second terminal structure 20 extend into the slot 33 respectively; the first terminal structure 10 and the second terminal structure 20 are electrically connected to the PCB board 40 respectively.

[0059] Among them, the first terminal structure 10 is a terminal structure as mentioned above, and the specific structure of the terminal structure refers to the above embodiment. Since this high-speed small card edge connector adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0060] In the specific implementation process, the first terminal structure 10 is fixedly connected in the first receiving groove 31, and the second terminal structure 20 is fixed in the second receiving groove 32. The slot 33 is used to plug in electronic products such as electronic cards, and the electronic products are in contact with the first terminal structure 10 and the second terminal structure 20 respectively. Specifically, the first terminal structure 10 and the second terminal structure 20 protrude from the two side walls of the slot 33 respectively, and are in contact with the two sides of the electronic product respectively, and the first terminal structure 10 and the second terminal structure 20 are respectively electrically connected to the PCB board 40 to achieve electrical connection for transmitting information.

[0061] In one embodiment, reference Figure 3 and Figure 4 As shown, the side wall of the slot 33 is connected with a guide slope 34. Specifically, the slot 33 has two opposite side walls, wherein the guide slope 34 of the upper side wall is located at one end of the upper side wall close to the outside, and the guide slope 34 of the lower side wall is located at one end of the lower side wall close to the inner wall of the slot 33, and the two guide slopes 34 are arranged in parallel, so that the electronic product can be inserted obliquely into the slot 33. And further, the first terminal structure 10 and the second terminal structure 20 are respectively provided with slopes at one end that contacts the electronic product to ensure effective contact with the electronic product. It can be understood that the side wall of the slot 33 is also connected with a guide plane, so that, with reference to Figure 5 As shown, the electronic product can be horizontally inserted into the slot 33. Thus, the electronic product can be inserted into the slot 33 in multiple directions, which improves the applicability of the high-speed small card edge connector and allows the electronic product to avoid other components.

[0062] In one embodiment, the high-speed small card edge connector also includes a shell 50, which covers the outer wall of the insulator 30 to protect the insulator 30, the first terminal structure 10 and the second terminal structure 20, and can also improve the stability of the first terminal structure 10 and the second terminal structure 20.

[0063] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A terminal structure, characterized in that: include: The lever arm, the base and the welding part are connected in sequence, wherein: One end of the force arm facing away from the base is connected with a contact portion; At least one holding portion is connected to one side of the base, and the holding portion extends in a direction away from the base; The base includes a first connecting part and a second connecting part, the first connecting part includes a widening section and an impedance adjustment section connected to each other, the width of the widening section is L1, the width of the impedance adjustment section is L2, and L1 is greater than L2, the widening section is provided with a material removal hole, and the welding part is connected to the second connecting part.

2. The terminal structure according to claim 1, characterized in that: The base also includes a material strip connecting portion, which is arranged corresponding to the holding portion, and the two are respectively located on two opposite sides of the base.

3. The terminal structure according to claim 2, characterized in that: The fixing parts are provided with two, one of which is arranged close to the force arm, and the other of which is arranged between the first connecting part and the second connecting part.

4. The terminal structure according to claim 1, characterized in that: The impedance adjustment section includes a first section and a second section, the first section and the second section are respectively connected to two opposite ends of the widened section, the width of the second connecting portion is L3, and L2 is equal to L3, and the impedance adjustment section and the second connecting portion are located on the same straight line.

5. The terminal structure according to claim 1 or 4, characterized in that: A process cut is provided on one side of the base, forming a first cut segment, a second cut segment and a third cut segment. The first cut segment and the second cut segment are respectively connected to the two ends of the first connecting part, and the third cut segment is connected to an end of the second connecting part away from the welding part.

6. The terminal structure according to claim 5, characterized in that: The first cutout segment, the second cutout segment and the third cutout segment have the same width.

7. The terminal structure according to claim 1 or 3, characterized in that: The two opposite sides of the holding portion are protruded with clamping points.

8. A high-speed small card edge connector, characterized in that: include: A first terminal structure; A second terminal structure; An insulator, wherein the insulator is provided with a plurality of first receiving grooves and a plurality of second receiving grooves, the first terminal structures correspond to the first receiving grooves one by one and are arranged in the first receiving grooves, the second terminal structures correspond to the second receiving grooves one by one and are arranged in the second receiving grooves, the insulator is provided with slots, and the first terminal structures and the second terminal structures extend into the slots respectively; as well as A PCB board, wherein the first terminal structure and the second terminal structure are electrically connected to the PCB board respectively; Wherein, the first terminal structure is the terminal structure as described in any one of claims 1-7.

9. The high speed miniature card edge connector according to claim 8, wherein: The side wall of the slot is connected with a guiding inclined surface.

10. The high speed miniature card edge connector according to claim 8, wherein: The high-speed small card edge connector further includes a shell, which covers and is connected to an outer wall of the insulator.

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