High-speed high-density high-precision card edge connector

Abstract

The utility model provides a high-speed high-density high-precision card edge connector, which comprises an insulating body, and a plurality of terminal grooves are respectively arranged in lengthwise side walls on two sides of a slot of the insulating body; double-layer terminals are arranged in at least one part of the terminal grooves, and single-layer terminals are arranged in the rest of the terminal grooves; the double-layer terminal comprises a lower-layer terminal and an upper-layer terminal, the upper-layer terminal is downwards inserted and fixed in the terminal groove from the top of the insulating body, and the lower-layer terminal is upwards inserted and fixed in the terminal groove from the bottom of the insulating body; the single-layer terminals are inserted and fixed in the terminal grooves upwards from the bottom of the insulation body or inserted and fixed in the terminal grooves downwards from the top of the insulation body. The holding part of the upper-layer terminal is arranged above the elastic force arm; according to the high-speed high-density high-precision card edge connector, the width of the insulating body can be effectively reduced, so that the space occupied by the insulating body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of connector, concretely relates to a high speed high density high precision card edge connector. BACKGROUND

[0002] Chinese patent CN202411745993.5 discloses a kind of high-speed communication storage electric connector, including one insulating body, multiple terminals housed in insulating body.

[0003] The top surface middle part of insulating body is longitudinally concave to form a longitudinal slot, the both sides of slot have longitudinal side wall along the length direction of slot, and longitudinal side wall on both sides of slot is provided with multiple terminal slots.Corresponding to the terminal slot of terminal slot of the top surface of longitudinal side wall, a rectangular recess with inside open is formed downwards, multiple independent fences are located below rectangular recess, and the outside of multiple independent fences is connected to the side wall of rectangular recess on the outside of insulating body.

[0004] Multiple terminals are one by one corresponding housed in corresponding terminal slot in two longitudinal side walls. Among the terminals in each longitudinal side wall, part is set as double-layer terminal, i.e. at least a part of terminal slot is provided with double-layer terminal, and the rest is single-layer terminal.Double-layer terminal includes lower layer terminal and upper layer terminal, and upper layer terminal of double-layer terminal is inserted and fixed in terminal slot from the top of insulating body downwards, lower layer terminal of double-layer terminal is inserted and fixed in terminal slot from the bottom of insulating body upwards, and single-layer terminal is inserted and fixed in terminal slot from the bottom of insulating body upwards, and each single-layer terminal is flush with lower layer terminal and forms a row.

[0005] Upper layer terminal and lower layer terminal both include fixed part fixed in corresponding terminal slot, and the middle part of fixed part is provided with a hole for saving metal material. The inside of fixed part protrudes and is clamped on the clamping point of corresponding terminal slot wall. Fixed part extends upwards and downwards to form upper arm part and lower arm part, and the lower end of lower arm part is bent to form welding part inside insulating body, the upper end of upper arm part of lower layer terminal protrudes to form contact part on the side of slot, the upper end of upper arm part of upper layer terminal extends to form upper inclined arm on the side of slot, the end of upper inclined arm is bent downwards to form lower inclined contact arm, and the end of lower inclined contact arm is contact end, and contact end extends into slot.

[0006] The high-speed communication storage electric connector increases the number of terminals on the basis of the same structure space by locally arranging double-layer terminals, thereby increasing signal transmission channels and greatly improving signal transmission speed; the upper terminals of the double-layer terminals are inserted and fixed in the terminal grooves from top to bottom, and the lower terminals are inserted and fixed in the terminal grooves from bottom to top, without the use of a plug, and without the plug assembly step, so that high-speed automatic terminal insertion production can be realized, the cost is reduced, and the yield is improved. Content of the utility model

[0007] The utility model discloses a high-speed high-density high-precision card edge connector, to solve the problem in the background art.

[0008] To achieve the above-mentioned purpose, the technical scheme used by the utility model is:

[0009] A high-speed high-density high-precision card edge connector, comprising:

[0010] An insulating body has a longitudinal insertion slot for inserting an electronic module, and a plurality of terminal grooves are arranged in the longitudinal side walls on both sides of the insertion slot; the insulating body is provided with ear hook accommodating space and pivot connection part at least one end;

[0011] At least one ear hook is pivotally connected to one end of the insulating body;

[0012] A plurality of terminals are respectively and correspondingly accommodated in the corresponding terminal grooves in the two longitudinal side walls; at least a part of the terminal grooves are provided with double-layer terminals, and the remaining terminal grooves are provided with single-layer terminals; the double-layer terminals include lower terminals and upper terminals; the upper terminals of the double-layer terminals are inserted and fixed in the terminal grooves from the top of the insulating body downward; the lower terminals of the double-layer terminals are inserted and fixed in the terminal grooves from the bottom of the insulating body upward; the single-layer terminals are inserted and fixed in the terminal grooves from the bottom of the insulating body upward or from the top of the insulating body downward;

[0013] The holding part of the upper terminal is above the elastic arm.

[0014] Further, the top surface, the slot-facing surface and the slot-avoiding surface of each of the longitudinal side walls are recessed to form a recessed structure at a position corresponding to the upper layer terminal.

[0015] Further, the top surface, the slot-facing surface and the slot-avoiding surface of each of the longitudinal side walls are recessed to form a first recess, a second recess and a third recess at a position corresponding to the upper layer terminal, the first recess, the second recess and the third recess are in communication with the terminal slot accommodating the upper layer terminal, the second recess is above the terminal slot accommodating the lower layer terminal at the slot-facing surface of the longitudinal side wall, the slot-facing side and the slot-avoiding side of the first recess are in communication with the second recess and the third recess respectively, the third recess penetrates through the bottom of the longitudinal side wall, and the first recess, the second recess and the third recess constitute the recessed structure.

[0016] Further, the slot-avoiding surface of each of the longitudinal side walls is recessed to form a fourth recess at a position close to the bottom surface of the longitudinal side wall, the fourth recess is arranged along the longitudinal direction of the longitudinal side wall, and the third recess is in communication with the fourth recess. Further, at a position where a plurality of upper layer terminals are adjacent in the recessed structure, an independent fence is formed between every two adjacent terminal slots accommodating the plurality of upper layer terminals, and the top surface, the slot-facing surface and the slot-avoiding surface of each independent fence are lower than the top surface, the slot-facing surface and the slot-avoiding surface of the longitudinal side wall.

[0017] Further, the top surface of each of the longitudinal side walls is provided with a plurality of recessed structures at intervals, and a material removal groove is arranged at a position between every two adjacent recessed structures, the material removal groove penetrates through the bottom of the longitudinal side wall.

[0018] Further, the lower layer terminal comprises a fixed part fixed in the corresponding terminal slot, the fixed part extends upward and downward to form an upper arm part and a lower arm part respectively, the lower end of the lower arm part is bent outward of the insulating body to form a welding part of the lower layer terminal, and the upper end of the upper arm part protrudes to the slot-facing side to form a contact part of the lower layer terminal.

[0019] Further, the upper layer terminal comprises an outer arm and an inner arm, the length of the outer arm is greater than the length of the inner arm, the lower end of the outer arm is bent outward of the insulating body to form a welding part of the upper layer terminal, the upper end of the outer arm and the upper end of the inner arm are connected by a transverse connecting part and constitute a holding part in the shape of an inverted U held on the insulating body, and the lower end of the inner arm is bent upward and forward to form an elastic force arm, and the upper end of the elastic force arm is bent to the slot-facing side to form a contact part of the upper layer terminal extending into the slot.

[0020] Further, when each single layer terminal is inserted and fixed in the terminal slot from the bottom of the insulating body, each single layer terminal is flush with the lower layer terminal and constitutes a row; when each single layer terminal is inserted and fixed in the terminal slot from the top of the insulating body, each single layer terminal is flush with the upper layer terminal and constitutes a row.

[0021] Further, when each single-layer terminal is flush with the lower-layer terminal, each single-layer terminal has the same structure as the lower-layer terminal, each single-layer terminal has a different structure from the upper-layer terminal, the terminal slot accommodating each single-layer terminal has the same structure as the terminal slot accommodating each lower-layer terminal, and the terminal slot accommodating each single-layer terminal has a different structure from the terminal slot accommodating each upper-layer terminal;

[0022] The terminal slot accommodating each single-layer terminal and each lower-layer terminal has a through slot penetrating through the top and bottom of the longitudinal side wall, the through slot and the terminal slot are separated by a partition wall, the upper end of the partition wall has a first relief slot for connecting the upper end of the terminal slot and the through slot, and the upper part of the terminal slot is a retaining wall;

[0023] At the position of the single-layer terminal, the upper end of the retaining wall is flush with the top of the longitudinal side wall, the upper end of the outer side wall of the through slot is flush with the top of the longitudinal side wall, and the outer side of the through slot is flush with the faraway slot surface;

[0024] At the position of the double-layer terminal, there is a second relief slot between the upper end of the retaining wall and the top of the longitudinal side wall, the contact part of the upper-layer terminal is located in the second relief slot, the inner arm and the elastic force arm are located in the through slot, there is a third relief slot between the upper end of the outer side wall of the through slot and the top of the longitudinal side wall, the transverse connecting part is located at the third relief slot, the terminal slot accommodating each upper-layer terminal is located outside the outer side wall of the through slot, the retaining part clamps the outer side wall of the through slot, the outer arm is located in the terminal slot outside the through slot, and the upper end of the terminal slot accommodating the upper-layer terminal is connected with the third relief slot, the second relief slot and the upper end of the through slot.

[0025] The beneficial effects of the present application mainly include: compared with the prior art in which the fixed part is designed below the upper inclined arm and the lower inclined arm (force arm), the retaining part of the upper-layer terminal is arranged above the elastic force arm in the present application, and the retaining part is clamped on the partition (the outer side wall of the through slot) inside the insulating body in a reverse U-shaped manner, which can effectively reduce the width of the insulating body and further reduce the space occupied by the insulating body; the top surface of each longitudinal side wall, the slot surface and the faraway slot surface are designed to have a recessed structure at the position corresponding to the upper-layer terminal, so that the terminal slot accommodating the upper-layer terminal is completely open, which not only makes it easier to insert and fix the upper-layer terminal into the terminal slot from top to bottom, but also greatly reduces the weight of the insulating body; the upper-layer terminal is composed of an outer arm, an inner arm, a transverse connecting part, an elastic force arm and a contact part, the upper end of the outer arm is connected to the inner arm through the transverse connecting part to form a reverse U-shaped retaining part, the lower end of the inner arm is bent upward to form an elastic force arm and form a U-shaped structure with the elastic force arm, the reverse U-shaped structure and the U-shaped structure can shorten the distance between the contact part of the upper-layer terminal and the outer arm, thereby reducing the space occupied by the upper-layer terminal in the terminal slot, further reducing the width of the insulating body, and further reducing the space occupied by the insulating body and the weight of the insulating body. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the three-dimensional exploded view of high speed, high density and high precision card edge connector, electronic module and circuit board of the utility model;

[0027] Figure 2 It is the three-dimensional view of high speed, high density and high precision card edge connector;

[0028] Figure 3 It is the three-dimensional view of high speed, high density and high precision card edge connector from another angle;

[0029] Figure 4 It is the three-dimensional view of insulating body;

[0030] Figure 5 It is the three-dimensional view of insulating body from another angle;

[0031] Figure 6 It is the plan view of insulating body;

[0032] Figure 7 It is the three-dimensional view of terminal in Figure 1 ;

[0033] Figure 8 It is the three-dimensional view of lower layer terminal in Figure 7 ;

[0034] Figure 9 It is the three-dimensional view of upper layer terminal in Figure 7 ;

[0035] Figure 10 It is the sectional view of terminal slot position of insulating body for accommodating single layer terminal;

[0036] Figure 11 It is the sectional view of Figure 10 combination with single layer terminal; Figure 1 The cutting position is at the edge position of terminal slot, and single layer terminal is not cut;

[0037] Figure 12 It is the sectional view of Figure 10 combination with single layer terminal; Figure 2 The cutting position is at the center position of terminal slot, and single layer terminal is cut;

[0038] Figure 13 It is the sectional view of terminal slot position of insulating body for accommodating double layer terminal;

[0039] Figure 14 It is the sectional view of Figure 13 combination with double layer terminal.

[0040] Explanation of reference numerals: insulating body 1, insertion slot 11, lengthwise side wall 12, recessed structure 12a, first recess 121, second recess 122, third recess 123, fourth recess 124, tower portion 13, terminal slot 14, fool-proof portion 15, independent partition 16, material removal slot 17, through slot 18, partition wall 19, first clearance slot 1a, retaining wall 1b, second clearance slot 1c, third clearance slot 1d, terminal 2, fixing portion 21, opening 211, clamping point 212, upper arm portion 22, lower arm portion 23, welding portion 24, contact portion 25, outer arm 26, inner arm 27, transverse connecting portion 28, elastic force arm 29, ear buckle 4, metal locking structure 5, electronic module 6, iron foot 7, circuit board 8. DETAILED DESCRIPTION

[0041] In order to better understand the purpose, structure, features and effects of the present application, the present application will be further described in conjunction with the drawings and specific embodiments.

[0042] As shown in Figures 1-14 , the high-speed high-density high-precision card edge connector comprises an insulating body 1 and a plurality of terminals 2 accommodated in the insulating body 1.

[0043] The top surface of the insulating body 1 is recessed in the lengthwise direction to form a lengthwise insertion slot 11, both ends of the insulating body 1 in the length direction are provided with a tower portion 13, both ends of the insertion slot 11 extend into the tower portion 13, and the tower portions 13 at both ends of the insulating body 1 in the length direction are different in height. The tower portion 13 with lower height in the insulating body 1 has an ear buckle accommodating space, the tower portion 13 has a pivot portion for pivoting the ear buckle and is provided with an ear buckle 4, the tower portion 13 with higher height is provided with a metal locking structure 5, the ear buckle 4 and the metal locking structure 5 constitute a single-sided ear buckle, which can save the space occupied by the opening of the ear buckle. The ear buckle 4 and the metal locking structure 5 are buckled and fixed on both sides of the electronic module 6 inserted into the insertion slot 11, so as to fix the electronic module 6. The bottom of each tower portion 13 of the insulating body 1 is fixed with an iron foot 7 for connecting with a circuit board 8, so as to fix the insulating body 1 to the circuit board 8.

[0044] The two sides of the slot 11 have longitudinal side walls 12 arranged along the length direction of the slot 11, and the longitudinal side walls 12 on both sides of the slot 11 are provided with a plurality of terminal grooves 14. The terminal grooves 14 penetrate the bottom surface of the insulating body 1, and the terminal grooves 14 also penetrate the slot face of the longitudinal side wall 12. The plurality of terminals 2 are respectively and one-to-one correspondingly accommodated in the corresponding terminal grooves 14 in the two longitudinal side walls 12. Among the terminals 2 in each of the longitudinal side walls 12, a part of the terminals 2 are locally provided as double-layer terminals, that is, at least a part of the terminal grooves 14 are provided with double-layer terminals (one or both of the longitudinal side walls 12 can be provided with double-layer terminals in one terminal groove 14, or one or both of the longitudinal side walls 12 can be provided with double-layer terminals in a plurality of spaced terminal grooves 14), and the remaining terminal grooves 14 are provided with single-layer terminals.

[0045] The slot 11 is provided with a foolproof part 15 connecting the two longitudinal side walls 12, the foolproof part 15 divides the slot 11 into a slot one and a slot two shorter than the slot one, the foolproof part 15 is close to the tower part 13 with lower height, and the foolproof part 15 is used to prevent the electronic module 6 from being inserted reversely.

[0046] The top surface, the slot face and the far-from-slot face of each longitudinal side wall 12 of the insulating body 1 are recessed structures 12a at positions corresponding to the upper-layer terminals, so that the terminal grooves 14 accommodating the upper-layer terminals are in a completely open state. There are a plurality of recessed structures 12a on each longitudinal side wall 12, and these recessed structures 12a are distributed at intervals. The top surface, the slot face and the far-from-slot face of each longitudinal side wall 12 are concave to form a first groove 121, a second groove 122 and a third groove 123 at positions corresponding to the upper-layer terminals. The second groove 122 is located above the terminal groove 14 accommodating the lower-layer terminals on the slot face of the longitudinal side wall 12. The slot side and the far-from-slot side of the first groove 121 are respectively communicated with the second groove 122 and the third groove 123. The third groove 123 penetrates the bottom of the longitudinal side wall 12 downward, and the first groove 121, the second groove 122 and the third groove 123 constitute the recessed structure 12a. The far-from-slot face of each longitudinal side wall 12 is concave to form a fourth groove 124 at a position close to the bottom surface of the longitudinal side wall 12. The fourth groove 124 is arranged along the longitudinal direction of the longitudinal side wall 12, and the third groove 123 is communicated with the fourth groove 124. The terminal grooves 14 accommodating the upper-layer terminals are communicated with the first groove 121, the second groove 122 and the third groove 123, and there are a plurality of positions of adjacent upper-layer terminals in the recessed structure 12a. Between every two adjacent terminal grooves 14 among the terminal grooves 14 accommodating the plurality of upper-layer terminals, an independent fence 16 is formed. The top surface, the slot face and the far-from-slot face of each independent fence 16 are lower than the top surface, the slot face and the far-from-slot face of the longitudinal side wall 12.

[0047] A top surface of each of the longitudinal side walls 12 is provided with a material removal groove 17 between every two adjacent recessed structures 12a, and the material removal groove 17 communicates with the fourth groove 124 through the bottom of the longitudinal side wall 12. The material removal groove 17 not only saves material, but also reduces the weight of the insulation body 1, prevents the insulation body 1 from warping, and facilitates mold forming.

[0048] The double-layer terminal includes a lower layer terminal and an upper layer terminal. The upper layer terminal of the double-layer terminal is inserted and fixed in the terminal groove 14 from the top of the insulation body 1 downward, the lower layer terminal of the double-layer terminal is inserted and fixed in the terminal groove 14 from the bottom of the insulation body 1 upward, and the single-layer terminal is inserted and fixed in the terminal groove 14 from the bottom of the insulation body 1 upward. Each single-layer terminal is flush with the lower layer terminal and forms a row. Each single-layer terminal has the same structure as the lower layer terminal, each single-layer terminal has a different structure from the upper layer terminal, the terminal groove 14 for accommodating each single-layer terminal has the same structure as the terminal groove 14 for accommodating each lower layer terminal, and the terminal groove 14 for accommodating each single-layer terminal has a different structure from the terminal groove 14 for accommodating each upper layer terminal.

[0049] The terminal groove 14 for accommodating each single-layer terminal and each lower layer terminal is provided with a through groove 18 outside the terminal groove 14, the through groove 18 and the terminal groove 14 inside the through groove 18 are separated by a partition wall 19, the upper end of the partition wall 19 is provided with a clearance groove la for connecting the upper end of the terminal groove 14 inside the through groove 18 with the through groove 18, and the upper end of the partition wall 19 is provided with a blocking wall lb above the terminal groove 14 inside the through groove 18. At the position of the single-layer terminal, the upper end of the blocking wall lb is flush with the top surface of the longitudinal side wall 12, and the upper end of the outer side wall of the through groove 18 is flush with the top surface of the longitudinal side wall 12 and the side away from the insertion groove. At the position of the double-layer terminal, there is a clearance groove 2 lc between the upper end of the blocking wall lb and the top surface of the longitudinal side wall 12, and there is a clearance groove 3 ld between the upper end of the outer side wall of the through groove 18 and the top surface of the longitudinal side wall 12. The terminal groove 14 for accommodating each upper layer terminal is located outside the outer side wall of the through groove 18, and the upper end of the terminal groove 14 for accommodating the upper layer terminal is connected with the clearance groove 3 ld, the clearance groove 2 lc and the upper end of the through groove 18.

[0050] The lower layer terminal includes a fixed part 21 fixed in the corresponding terminal groove 14, the fixed part 21 is provided with an opening 211, the inner side of the fixed part 21 is protruding to form a clamping point 212, the fixed part 21 extends upward and downward to form an upper arm part 22 and a lower arm part 23, the lower end of the lower arm part 23 is bent outward of the insulation body 1 to form a welding part 24, the welding part 24 of the single-layer terminal and the welding part 24 of the lower layer terminal are in the same direction, and the upper end of the upper arm part 22 protrudes to form a contact part 25 toward the insertion groove 11 side.

[0051] The upper terminal comprises an outer arm 26 and an inner arm 27, the length of the outer arm 26 is greater than that of the inner arm 27, the outer arm 26 is located in the terminal slot 14 outside the through slot 18, and the inner arm 27 is located in the through slot 18. The lower end of the outer arm 26 is bent outward of the insulating body 1 to form a welding portion 24, the welding portion 24 of the upper terminal and the welding portion 24 of the lower terminal are in the same direction, and the welding portion 24 of the upper terminal and the welding portion 24 of the lower terminal are flush. The upper end of the outer arm 26 and the upper end of the inner arm 27 are connected by a transverse connecting portion 28 at the accommodation slot three 1d and constitute a retaining portion of inverted U type clamping the outer side wall of the through slot 18, the opposite sides of the outer arm 26 and the inner arm 27 also respectively protrude to form clamping points 212 clamped on the outer side wall of the through slot 18, the lower end of the inner arm 27 first extends forward and then bends upward to form an elastic force arm 29 located in the through slot 18, the retaining portion of the upper terminal is above the elastic force arm 29, the inner arm 27 and the elastic force arm 29 constitute a U-shaped structure, the upper end of the elastic force arm 29 is bent toward the insertion slot 11 side to form a contact portion 25 located in the accommodation slot two 1c and extending into the insertion slot 11, the contact portion 25 of the upper terminal is higher than that of the lower terminal. The inverted U-shaped structure and the U-shaped structure can shorten the distance between the contact portion 25 of the upper terminal and the outer arm 26, thereby reducing the occupation of the space in the terminal slot 14 of the upper terminal by the upper terminal, further reducing the width of the insulating body 1, thereby reducing the occupation of the space by the insulating body 1 and reducing the weight of the insulating body 1.

[0052] The length of the terminal slot 14 accommodating each upper terminal along the width direction of the insulating body 1 on the top surface of the insulating body 1 is greater than the length of the terminal slot 14 along the width direction of the insulating body 1 on the bottom surface of the insulating body 1; the length of the terminal slot 14 accommodating each upper terminal along the width direction of the insulating body 1 on the top surface of the insulating body 1 is greater than the length of the terminal slot 14 along the width direction of the insulating body 1 on the bottom surface of the insulating body 1; the length of the terminal slot 14 accommodating each upper terminal along the width direction of the insulating body 1 on the bottom surface of the insulating body 1 is less than the length of the terminal slot 14 along the width direction of the insulating body 1 on the bottom surface of the insulating body 1.

[0053] A plurality of recessed structures 12a are arranged at intervals on the top surface of each of the longitudinal side walls 12, and between each adjacent two of the recessed structures 12a, there are a through slot 18 on the inner side of the top surface of the longitudinal side wall 12 and a material removal groove 17 on the outer side of the top surface of the longitudinal side wall 12, the material removal groove 17 is located at the position of the single-layer terminal, and at the position of the single-layer terminal, the material removal groove 17 is located on the outer side of the through slot 18. The terminal grooves 14 for accommodating the upper-layer terminals and the terminal grooves 14 for accommodating the lower-layer terminals are arranged in a row on the bottom surface of the insulating body 1, and on the bottom surface of the insulating body 1, the terminal grooves 14 for accommodating the upper-layer terminals are on the outer side, the terminal grooves 14 for accommodating the lower-layer terminals are on the inner side, and the through slot 18 is located between the terminal grooves 14 for accommodating the upper-layer terminals and the terminal grooves 14 for accommodating the lower-layer terminals on the bottom surface of the insulating body 1.

[0054] The beneficial effects of the utility model relative to the prior art mainly include: relative to the prior art in which the fixing part is designed below the upper inclined arm and the lower inclined arm (force arm), the utility model sets the fixing part of the upper-layer terminal above the elastic force arm 29 and forms the fixing part clamped on the internal partition (the outer side wall of the through slot 18 is the internal partition) of the insulating body 1 in the inverted U-shaped mode, which can effectively reduce the width of the insulating body 1 and further reduce the space occupied by the insulating body 1; the recessed structures in which the terminal grooves 14 for accommodating the upper-layer terminals are completely open are designed on the top surface of each longitudinal side wall 12, towards the insertion slot surface and away from the insertion slot surface at the positions corresponding to the upper-layer terminals, which not only makes it easier to insert and fix the upper-layer terminals in the terminal grooves 14 from top to top, but also greatly reduces the weight of the insulating body 1; the upper-layer terminal is composed of the outer arm 26 and the inner arm 27, the transverse connecting part 28, the elastic force arm 29 and the contact part 25, the upper end of the outer arm 26 is connected to the inner arm 27 through the transverse connecting part 28 and forms the inverted U-shaped fixing part, the lower end of the inner arm 27 is bent upwards to form the elastic force arm 29 and forms the U-shaped structure with the elastic force arm 29, the inverted U-shaped structure and the U-shaped structure can shorten the distance between the contact part 25 and the outer arm 26 of the upper-layer terminal, thereby reducing the space occupied by the upper-layer terminal in the terminal groove 14, further reducing the width of the insulating body 1, and further reducing the space occupied by the insulating body 1 and the weight of the insulating body 1.

[0055] In other embodiments, the two tower parts 13 of the insulating body 1 are each provided with an ear buckle 4. The two ear buckles 4 are respectively buckled and fixed on the two sides of the electronic module 6 inserted into the insertion slot 11 to fix the electronic module 6.

[0056] In other embodiments, each single-layer terminal is flush with the upper-layer terminals and forms a row. Each single-layer terminal has the same structure as the upper-layer terminals, each single-layer terminal has a different structure from the lower-layer terminals, the terminal slot 14 that accommodates each single-layer terminal has the same structure as the terminal slot 14 that accommodates each upper-layer terminal, and the terminal slot 14 that accommodates each single-layer terminal has a different structure from the terminal slot that accommodates each lower-layer terminal.

[0057] The utility model has been described above in combination with the best embodiment, but the utility model is not limited to the above disclosed embodiments, and should cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. A high-speed, high-density, high-precision card edge connector, characterized in that, The application relates to an electronic module, which comprises the following parts: an insulating body with a longitudinal slot for inserting an electronic module, a plurality of terminal grooves arranged in the longitudinal side walls on both sides of the slot, an ear buckle accommodating space and a pivot joint part for pivotally connecting an ear buckle arranged at least at one end of the insulating body; at least one ear buckle pivotally connected at one end of the insulating body; a plurality of terminals correspondingly arranged in the terminal grooves in the longitudinal side walls, at least a part of the terminal grooves are provided with double-layer terminals, and the rest of the terminal grooves are provided with single-layer terminals; the double-layer terminals comprise lower terminals and upper terminals, the upper terminals of the double-layer terminals are inserted and fixed in the terminal grooves from the top of the insulating body downwards, the lower terminals of the double-layer terminals are inserted and fixed in the terminal grooves from the bottom of the insulating body upwards, and the single-layer terminals are inserted and fixed in the terminal grooves from the bottom of the insulating body upwards or from the top of the insulating body downwards; the holding part of the upper terminal is above the elastic force arm. The top surface, the slot surface and the surface away from the slot of each longitudinal side wall are recessed at the positions corresponding to the upper terminals, and the terminal grooves for accommodating the upper terminals are in a fully open state. The top surface, the slot surface and the surface away from the slot of each longitudinal side wall are recessed at the positions corresponding to the upper terminals, and the terminal grooves for accommodating the upper terminals are in a fully open state. The top surface, the slot surface and the surface away from the slot of each longitudinal side wall are recessed at the positions corresponding to the upper terminals, and the terminal grooves for accommodating the upper terminals are in a fully open state. The surface away from the slot of each longitudinal side wall is recessed at the positions close to the bottom of the longitudinal side wall to form a fourth groove, the fourth groove is arranged along the longitudinal direction of the longitudinal side wall, and the third groove is communicated with the fourth groove.

2. The high speed, high density, and high precision card edge connector of claim 1, wherein: In the recessed structure, a plurality of upper terminals are arranged in the positions adjacent to each other, an independent fence is formed between every two adjacent terminal grooves for accommodating the plurality of upper terminals, and the top surface, the slot surface and the surface away from the slot of each independent fence are lower than the top surface, the slot surface and the surface away from the slot of the longitudinal side wall.

3. The high speed, high density, and high precision card edge connector of claim 2, wherein: The top surface of each longitudinal side wall is provided with a plurality of recessed structures at intervals, a material removing groove is arranged between every two adjacent recessed structures, and the material removing groove penetrates through the bottom of the longitudinal side wall.

4. The high speed, high density, and high precision card edge connector of claim 3, wherein: The lower terminal comprises a fixed part fixed in the corresponding terminal groove, the fixed part extends upwards and downwards to form an upper arm part and a lower arm part, the lower end of the lower arm part is bent towards the outside of the insulating body to form a welding part of the lower terminal, and the upper end of the upper arm part protrudes towards the slot side to form a contact part of the lower terminal.

5. The high speed, high density, and high precision card edge connector of claim 3, wherein: The upper terminal comprises an outer arm and an inner arm, the length of the outer arm is greater than that of the inner arm, the lower end of the outer arm is bent towards the outside of the insulating body to form a welding part of the upper terminal, the upper end of the outer arm and the upper end of the inner arm are connected through a transverse connecting part and form a holding part in the shape of an inverted U arranged on the insulating body, the lower end of the inner arm is bent towards the front and upwards to form an elastic force arm, and the upper end of the elastic force arm is bent towards the slot side to form a contact part of the upper terminal extending into the slot.

6. The high speed, high density, and high precision card edge connector according to any one of claims 2-5, wherein: ​ 7. The high speed, high density, high precision card edge connector according to any one of claims 1-5, wherein: ​ 8. The high speed, high density, and high precision card edge connector according to any one of claims 1-5, wherein: ​ 9. The high speed, high density, and high precision card edge connector of claim 8, wherein: When each single-layer terminal is inserted into the terminal slot from the bottom of the insulating body, each single-layer terminal is flush with the lower-layer terminal and forms a row; when each single-layer terminal is inserted into the terminal slot from the top of the insulating body, each single-layer terminal is flush with the upper-layer terminal and forms a row.

10. The high speed, high density, and high precision card edge connector of claim 9, wherein: When each single-layer terminal is flush with the lower-layer terminal, each single-layer terminal has the same structure as the lower-layer terminal, each single-layer terminal has a different structure from the upper-layer terminal, the terminal slot for accommodating each single-layer terminal has the same structure as the terminal slot for accommodating each lower-layer terminal, and the terminal slot for accommodating each single-layer terminal has a different structure from the terminal slot for accommodating each upper-layer terminal; Each terminal slot for accommodating each single-layer terminal and each lower-layer terminal has a through slot penetrating through the top and bottom of the longitudinal side wall, the through slot and the terminal slot are separated by a partition wall, the upper end of the partition wall has a first clearance slot for connecting the upper end of the terminal slot and the through slot, and the upper side of the terminal slot is a retaining wall; At the position of the single-layer terminal, the upper end of the retaining wall is flush with the top of the longitudinal side wall, the upper end of the outer side wall of the through slot is flush with the top of the longitudinal side wall and the surface away from the insertion slot, respectively; At the position of the double-layer terminal, there is a second clearance slot between the upper end of the retaining wall and the top of the longitudinal side wall, the contact portion of the upper-layer terminal is located in the second clearance slot, the inner arm and the elastic force arm are located in the through slot, there is a third clearance slot between the upper end of the outer side wall of the through slot and the top of the longitudinal side wall, the transverse connecting portion is located at the third clearance slot, the terminal slot for accommodating each upper-layer terminal is located outside the outer side wall of the through slot, the retaining portion clamps the outer side wall of the through slot, the outer arm is located in the terminal slot outside the through slot, and the upper end of the terminal slot for accommodating each upper-layer terminal is connected to the third clearance slot, the second clearance slot, and the upper end of the through slot.

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