Card edge connector

Abstract

The utility model discloses a card edge connector, which comprises a plastic main body, a conductive terminal and a pair of holding pieces, an upper row of plugging slots and a lower row of plugging slots are formed in the plastic main body; the conductive terminals comprise an upper row of terminals and a lower row of terminals, the upper row of terminals are arranged in the upper row of plugging slots, and the lower row of terminals are arranged in the lower row of plugging slots; the pair of holding pieces are respectively arranged on the left and right sides of the plastic main body; the conductive terminal comprises a fixed part which is arranged on the lower end face of the plastic main body and extends out of the front and rear surfaces of the plastic main body, and an elastic force arm which extends upwards along the fixed part and is integrally bent into an S shape. According to the card edge connector, the three-force-arm conductive terminals designed to be S-shaped are assembled on the plastic main body, the S-shaped terminal structure is good in deformation bearing and deformation recovery performance, the plastic main body is designed to be obliquely inserted, the insertion force of the sub-circuit board and the connector is reduced, the stress of the conductive terminals is uniformly released and distributed on the force arms, and the clamping edge connector is more stable. The conductive terminal can achieve the purpose of having excellent elastic performance after being plugged and unplugged for many times.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a card edge connector. Background Art

[0002] The card edge connectors currently on the market generally include an insulating body and a plurality of conductive terminals arranged inside the insulating body. The conductive terminals are single-arm terminals. After being subjected to force, the stress of such single-arm terminals will be concentrated together and cannot be effectively released. They are prone to yielding, causing the terminals to not rebound. In addition, the production dimensions of single-arm bent terminals are unstable, and the product elasticity and coplanarity are poor, which can easily lead to empty soldering or poor reassembly by consumers. Utility Model Content

[0003] Based on the above technical problems, an embodiment of the present application provides a card edge connector, which can evenly distribute the force on each force arm of the conductive terminal, ensure the resilience performance of the terminal, and extend the service life of the card edge connector.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a card edge connector, comprising: a plastic body, a conductive terminal, and a pair of retaining members; the plastic body is provided with an upper row of plug-in slots and a lower row of plug-in slots; the conductive terminals include an upper row of terminals and a lower row of terminals, the upper row of terminals are arranged in the upper row of plug-in slots, and the lower row of terminals are arranged in the lower row of plug-in slots; a pair of retaining members are respectively arranged on the left and right sides of the plastic body; the conductive terminals include a fixing portion arranged on the lower end surface of the plastic body and extending outward from the front and rear surfaces thereof, and an elastic force arm extending upward along the fixing portion and integrally bent into an S shape.

[0005] Furthermore, the upper row of terminals includes a first fixing portion arranged at the bottom end of the plastic body and extending to the rear thereof, a first connecting portion formed by bending upward from the first fixing portion, a first clamping portion protruding inwardly along the middle of the first connecting portion, a first upper force arm formed by bending inwardly along the upper end of the first connecting portion, a second upper force arm formed by bending upward and extending outwardly along the first upper force arm, and a third upper force arm formed by bending upward and extending inwardly along the second upper force arm, and the first upper force arm, the second upper force arm, and the third upper force arm are parallel to each other and form an S-shaped elastic force arm.

[0006] Furthermore, a first contact portion protruding downward is provided at the end of the third upper force arm, and a first protrusion protruding upward is provided at the upper end edge of the first clamping portion.

[0007] Furthermore, the upper row of plug-in slots includes a first accommodating slot and a second accommodating slot, the first accommodating slot is located above the second accommodating slot, the first upper force arm, the second upper force arm, and the third upper force arm are inserted in the first accommodating slot, the first clamping portion is installed in the second accommodating slot, and the first protrusion abuts against the upper end surface of the second accommodating slot.

[0008] Furthermore, the lower row of terminals includes a second fixing portion arranged at the bottom end of the plastic body and extending to the front thereof, a second connecting portion is bent upward from the second fixing portion, a second clamping portion protruding inwardly along the middle of the second connecting portion, a first lower force arm is formed by bending inwardly along the upper end of the second connecting portion, a second lower force arm is formed by bending upward and extending outwardly along the first lower force arm, and a third lower force arm is formed by bending upward and extending inwardly along the second lower force arm, and the first lower force arm, the second lower force arm, and the third lower force arm are parallel to each other and form an S-shaped elastic force arm.

[0009] Furthermore, a second contact portion tilted upward is provided at the end of the third lower force arm, and a second protrusion protruding upward is provided at the upper edge of the second engaging portion.

[0010] Furthermore, the lower row of plug-in slots includes a third accommodating slot and a fourth accommodating slot, the third accommodating slot is located above the fourth accommodating slot, the first lower force arm, the second lower force arm, and the third lower force arm are inserted into the third accommodating slot, the second clamping portion is installed in the fourth accommodating slot, and the second protrusion abuts against the upper end surface of the fourth accommodating slot.

[0011] Furthermore, the left and right ends of the plastic body are respectively provided with retaining member slots, and the pair of retaining members can be detachably inserted into the retaining member slots.

[0012] Furthermore, the retaining member slot includes a guide groove extending into the interior of the plastic body and an L-shaped card slot located on the outer end surface; each of the retaining members includes a sheet-like buckling portion and a hook portion bent into an L shape, the buckling portion extends horizontally into the interior of the guide groove, and the L-shaped hook portion is engaged with the card slot.

[0013] Furthermore, the upper edge of the holding portion is provided with a third protrusion protruding upward, and the third protrusion is engaged with the upper end surface of the guide groove.

[0014] The beneficial effect of the utility model is that the conductive terminal with three force arms designed in an S shape is assembled on the plastic body, the S-shaped terminal structure has better deformation resistance and deformation recovery performance, and the plastic body is designed with an oblique insertion to reduce the insertion force between the sub-circuit board and the connector, and the stress of the conductive terminal is evenly released and distributed on the force arm, which can achieve the purpose of multiple plugging and unplugging with excellent elastic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the card edge connector in the embodiment of the utility model;

[0016] Figure 2 This is an exploded schematic diagram of a card edge connector in an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the upper row of terminals of the card edge connector in the embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the installation of the lower row of terminals of the card edge connector in the embodiment of the utility model;

[0019] Figure 5 This is a schematic structural diagram of a plastic body of a card edge connector in an embodiment of the present utility model;

[0020] Figure 6 for Figure 5 A partial enlarged view of the structure of the middle A section;

[0021] Figure 7 This is a schematic diagram of the structure of the holding member in the embodiment of the utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the upper row of terminals in an embodiment of the utility model;

[0023] Fig. 9 This is a schematic diagram of the structure of the lower row of terminals in the embodiment of the utility model;

[0024] Fig.10 This is a schematic diagram of inserting a sub-circuit board into a card edge connector in an embodiment of the present utility model;

[0025] Reference numerals: upper row terminal 10, lower row terminal 20, plastic body 30, retaining member 40, sub-circuit board 50, first upper force arm 101, second upper force arm 102, third upper force arm 103, first contact portion 104, first engaging portion 105, first protrusion 1050, first fixing portion 106, first connecting portion 107, first lower force arm 201, second lower force arm 202, third lower force arm 203, second contact portion 2 04, second locking portion 205, second protrusion 2050, second fixing portion 206, second connecting portion 207, upper row of plug-in slots 301, first accommodating slots 3010, second accommodating slots 3011, lower row of plug-in slots 302, third accommodating slots 3020, fourth accommodating slots 3021, retaining member slots 303, guide slots 3030, card slots 3031, buckling portion 401, third protrusions 4010, hook portion 402. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0027] The embodiment of the present application provides a card edge connector to solve the problem in the prior art that the single force arm of the conductive terminal in the card edge connector is not easy to rebound after being stressed, which affects the performance. It should be noted that in the present application, the direction of the upper row of terminals relative to the lower row of terminals is up, above, upper side, upper end, top, top end or top, and the opposite direction is down, below, lower side, lower end, bottom, bottom end or bottom, the direction in which the first fixing part of the upper row of terminals extends is back, rear, rear side, and the direction in which the second fixing part of the lower row of terminals extends is front, front, front side.

[0028] like Figure 1 to Figure 2 As shown, a card edge connector comprises: a plastic body 30, in which a plurality of upper row plug-in slots 301 and a plurality of lower row plug-in slots 302 are provided; a conductive terminal is inserted in the plastic body 30, which comprises an upper row terminal 10 and a lower row terminal 20, wherein the upper row terminal 10 is arranged in the upper row plug-in slots 301, and the lower row terminal 20 is arranged in the lower row plug-in slots 302; a pair of retaining members 40 are respectively inserted in the left and right sides of the plastic body 30; the conductive terminal comprises a fixing portion arranged on the lower end surface of the plastic body and extending outward from the front and rear surfaces thereof, and an elastic force arm extending upward along the fixing portion and integrally bent into an S-shaped shape.

[0029] Specific reference Figure 3 and Figure 8 The upper row of terminals 10 includes a first fixing portion 106 extending to the rear of the plastic body 30, a first connecting portion 107 formed by bending upward from the first fixing portion 106, a first engaging portion 105 protruding inwardly along the middle of the first connecting portion 107, a first upper lever arm 101 formed by bending inwardly along the upper end of the first connecting portion 107, a second upper lever arm 102 formed by bending upward and extending outwardly along the first lever arm 101, a third upper lever arm 103 formed by bending upward and extending inwardly along the second upper lever arm 102, and a first contact portion 104 protruding downwardly is provided at the end of the third upper lever arm 103, and the first contact portion 104 is used to make electrical contact with the sub-circuit board 50. The first upper lever arm 101 is parallel to the second upper lever arm 102, the third upper lever arm 103 and the first engaging portion 105, and the three constitute an S-shaped elastic lever arm.

[0030] The upper row of plug-in slots 301 include a first accommodating slot 3010 and a second accommodating slot 3011. The first accommodating slot 3010 is located above the second accommodating slot 3011 and is separated by a partition in the plastic body 30. The first upper force arm 101, the second upper force arm 102, and the third upper force arm 103 are inserted into the first accommodating slot 3010. The first clamping portion 105 is installed in the second accommodating slot 3011. The upper end edge of the first clamping portion 105 is provided with a first protrusion 1050 protruding upward. The first protrusion 1050 abuts against the upper end surface of the second accommodating slot. The first protrusion 1050 can prevent the upper row of terminals 10 from escaping from the upper row of plug-in slots 301, thereby playing a fixing role.

[0031] Further references Figure 4 and Fig. 9 The lower row of terminals 20 includes a second fixing portion 206 extending to the front of the plastic body 30, a second connecting portion 207 is bent upward from the second fixing portion 206, a second engaging portion 205 protruding inwardly along the middle of the second connecting portion 207, a first lower force arm 201 is bent inwardly along the upper end of the second connecting portion 205, a second lower force arm 202 is bent upwardly and extended outwardly along the first lower force arm 201, a third lower force arm 203 is bent upwardly and extended inwardly along the second lower force arm 202, and a second contact portion 204 is provided at the end of the third lower force arm 203, and the second contact portion 204 is used to make electrical contact with the sub-circuit board 50. The first lower force arm 201 is parallel to the second lower force arm 202, the third lower force arm 203 and the second engaging portion 205, and the three form an S-shaped elastic force arm.

[0032] The lower row of plug-in slots 302 include a third accommodating slot 3020 and a fourth accommodating slot 3021. The third accommodating slot 3020 is located above the fourth accommodating slot 3021 and is separated by a partition in the plastic body 30. The first lower force arm 201, the second lower force arm 202, and the third lower force arm 203 are inserted into the third accommodating slot 3020. The second clamping portion 205 is installed in the fourth accommodating slot 3021. The upper edge of the second clamping portion 205 is provided with a second protrusion 205 protruding upward, and the second protrusion 205 abuts against the upper end surface of the fourth accommodating slot 3021. The second protrusion 2050 has the same function as the first protrusion, and can prevent the lower row of terminals 20 from escaping from the lower row of plug-in slots 302, thereby fixing the terminals.

[0033] From the above content, it can be seen that the present application assembles a conductive terminal with three force arms designed in an S shape on the plastic body 30. The S-shaped conductive terminal structure has better deformation and deformation recovery performance. After the terminal is subjected to force, the force can be evenly distributed on the three sections of elastic force arms, thereby maintaining the elasticity of the conductive terminal and extending the service life of the card edge connector.

[0034] Reference Figure 5 , Figure 6 , Figure 7 The left and right ends of the plastic body 30 are respectively provided with a substantially L-shaped retaining member slot 303, and a pair of retaining members 40 are detachably inserted into the retaining member slot 303. The retaining member slot 303 includes a guide slot 3030 extending into the interior of the plastic body 30 and an L-shaped clamping slot 3031 located on the outer end surface; each retaining member 40 includes a sheet-shaped buckling portion 401 and a hook portion 402 bent into an L shape, the buckling portion 401 horizontally extends into the interior of the guide slot 3030, when the buckling portion 401 extends into the interior of the guide slot 3030, the L-shaped clamping hook portion 402 is just engaged with the clamping slot 3031, and at the same time, the upper edge of the buckling portion 401 is provided with a third protrusion 4010 protruding upwards, and the third protrusion 4010 is clamped on the upper end surface of the guide slot 3030, so that the retaining member 40 is stably inserted into the interior of the retaining member slot 303.

[0035] Reference Fig.10 The card edge connector in this embodiment can be plugged into a sub-circuit board 50. When the sub-circuit board 50 is inserted into the plastic body 30, a certain range of angles are formed between the first contact portion 104 on the upper row of terminals 10 and the second contact portion 204 on the lower row of terminals 20 and the sub-circuit board 50. The 30 degrees in this embodiment is only one example. This design allows the sub-circuit board 50 to be inserted into the plastic body 30 at an angle. The sub-circuit board 50 is first inserted obliquely into the connector to reduce the stress on the conductive terminals and thus prevent damage to the terminals.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A card edge connector, characterized in that: include: A plastic body, a conductive terminal, and a pair of retaining members; the plastic body is provided with an upper row of plug-in slots and a lower row of plug-in slots; the conductive terminals include upper row terminals and lower row terminals, the upper row terminals are arranged in the upper row of plug-in slots, and the lower row terminals are arranged in the lower row of plug-in slots; a pair of retaining members are respectively arranged on the left and right sides of the plastic body; the conductive terminals include a fixing portion arranged on the lower end surface of the plastic body and extending outward from the front and rear surfaces thereof, and an elastic force arm extending upward along the fixing portion and integrally bent into an S shape.

2. The card edge connector according to claim 1, wherein: The upper row of terminals includes a first fixing portion arranged at the bottom end of the plastic body and extending to the rear thereof, a first connecting portion formed by bending upward from the first fixing portion, a first clamping portion protruding inwardly along the middle of the first connecting portion, a first upper force arm formed by bending inwardly along the upper end of the first connecting portion, a second upper force arm formed by bending upward and extending outwardly along the first upper force arm, and a third upper force arm formed by bending upward and extending inwardly along the second upper force arm, wherein the first upper force arm, the second upper force arm, and the third upper force arm are parallel to each other and form an S-shaped elastic force arm.

3. The card edge connector according to claim 2, wherein: A first contact portion protruding downward is provided at the end of the third upper force arm, and a first protrusion protruding upward is provided at the upper end edge of the first clamping portion.

4. The card edge connector according to claim 3, wherein: The upper row of plug-in slots includes a first accommodating slot and a second accommodating slot, the first accommodating slot is located above the second accommodating slot, the first upper force arm, the second upper force arm, and the third upper force arm are inserted into the first accommodating slot, the first clamping portion is installed in the second accommodating slot, and the first protrusion is against the upper end surface of the second accommodating slot.

5. The card edge connector according to claim 1, wherein: The lower row of terminals includes a second fixing portion arranged at the bottom end of the plastic body and extending to the front thereof, a second connecting portion bent upward from the second fixing portion, a second engaging portion protruding inwardly along the middle of the second connecting portion, a first lower force arm bent inwardly along the upper end of the second connecting portion, a second lower force arm bent upwardly and extended outwardly along the first lower force arm, and a third lower force arm bent upwardly and extended inwardly along the second lower force arm. The first lower force arm, the second lower force arm, and the third lower force arm are parallel to each other and form an S-shaped elastic force arm.

6. The card edge connector according to claim 5, characterized in that: An end portion of the third lower force arm is provided with a second contact portion tilted upward, and an upper edge of the second engaging portion is provided with a second protrusion protruding upward.

7. The card edge connector according to claim 6, wherein: The lower row of plug-in slots includes a third accommodating slot and a fourth accommodating slot, the third accommodating slot is located above the fourth accommodating slot, the first lower force arm, the second lower force arm, and the third lower force arm are inserted into the third accommodating slot, the second clamping portion is installed in the fourth accommodating slot, and the second protrusion abuts against the upper end surface of the fourth accommodating slot.

8. The card edge connector according to claim 1, wherein: The left and right ends of the plastic body are respectively provided with retaining member slots, and the pair of retaining members can be detachably inserted into the retaining member slots.

9. The card edge connector according to claim 8, wherein: The retaining member slot includes a guide groove extending into the interior of the plastic body and an L-shaped card slot located on the outer end surface; each of the retaining members includes a sheet-shaped buckling portion and a hook portion bent into an L shape, the buckling portion extends horizontally into the guide groove, and the hook portion is engaged with the card slot.

10. The card edge connector according to claim 9, wherein: The upper edge of the buckling portion is provided with a third protrusion protruding upward, and the third protrusion is engaged with the upper end surface of the guide groove.

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