FPC connector with improved structure

Abstract

The utility model discloses a FPC connector with an improved structure, which comprises a plastic body and conductive terminals, the upper side wall of the plastic body is provided with a card slot and a plurality of terminal accommodating grooves, the terminal accommodating grooves are communicated with the card slot in the front-back direction, and the holding parts of the conductive terminals are fixedly inserted in the terminal accommodating grooves. Welding feet of the conductive terminals extend out of the lower side of the plastic body and can be welded to a PCB, elastic contact parts of the conductive terminals extend into the card inserting grooves and can elastically deform in the front-back direction to tightly abut against the electronic cards inserted into the card inserting grooves, and a steel sheet is fixedly arranged on the inner side of the plastic body and comprises a card inserting groove reinforcing part which is parallel and right opposite to the bottom faces of the card inserting grooves. According to the utility model, the strength of the plastic cement body is effectively increased, the plastic cement is prevented from being broken in the use process, the connection strength of the connector and a PCB is enhanced, and stable signal transmission is ensured.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to an FPC connector with improved structure. Background Art

[0002] The plastic body of the common FPC01 series connectors is very weak at the card slot. When in use, due to repeated insertion and removal of the card, especially when the electronic card is tilted during insertion and removal, it is easy to cause the plastic body to break, resulting in damage to the connector. In addition, the conductive terminals of this type of connector are commonly installed in the plastic body from the side. After the product is soldered to the PCB board, when the product generates a large pulling force on the plastic body due to misoperation, it is easy to cause the plastic body to separate or loosen from the conductive terminals, affecting subsequent normal use. Utility Model Content

[0003] In order to overcome the above defects, the utility model provides a structurally improved FPC connector, which has high strength, high dimensional accuracy, is firmly connected to the PCB board, and can be stably positioned in the casing.

[0004] The utility model adopts the following technical scheme to solve the technical problems: an FPC connector with improved structure, comprising a plastic body and conductive terminals, wherein the up-down direction, the left-right direction and the front-back direction are three mutually perpendicular directions, a card insertion slot extending in the left-right direction and presenting an open structure and a plurality of terminal accommodating slots arranged at intervals in the left-right direction are formed on the upper side wall of the plastic body, the terminal accommodating slot is connected with the card insertion slot in the front-back direction, the conductive terminal comprises a welding foot, a retaining portion and an elastic contact portion, the retaining portion of the conductive terminal is fixedly inserted in the terminal accommodating slot, the welding foot of the conductive terminal extends out of the lower side of the plastic body and can be welded to a PCB board located at the lower side of the plastic body, the elastic contact portion of the conductive terminal extends into the card insertion slot and can be elastically deformed in the front-back direction to tightly abut against an electronic card inserted into the card insertion slot, a steel sheet is fixedly arranged on the inner side of the plastic body, and the steel sheet comprises a card insertion slot reinforcement portion which is parallel to and directly faces the bottom surface of the card insertion slot.

[0005] As a further improvement of the present invention, the steel sheet is an L-shaped structure, one side wall of which forms a card slot reinforcement portion parallel to the bottom surface of the card slot, and the other side wall extends in the up and down directions. A plurality of hollow structures are provided on at least one side wall of the steel sheet. The steel sheet is integrally formed in the plastic body by in-mold injection molding, and the hollow structure on the side wall of the steel sheet is filled with plastic material.

[0006] As a further improvement of the present invention, the steel sheet is provided with a plurality of welding sheets extending out from the lower side of the plastic body, and the welding sheets can be welded and fixed to the PCB board.

[0007] As a further improvement of the utility model, the elastic contact portion of the conductive terminal includes an elastic contact arm and a connecting arm, one end of the connecting arm is integrally formed on the retaining portion of the conductive terminal, and the other end of the connecting arm is bent into an arc to form an integral structure with the lower end of the elastic contact arm, and the connecting arm and the retaining portion of the conductive terminal together form an inverted U-shaped structure with an opening facing downward, and the elastic contact arm is bent to form a V-shaped structure, and the bent convex surface of the V-shaped structure protrudes toward the card insertion slot to form a contact point, and the terminal accommodating groove on the plastic body includes a retaining groove and a limit groove arranged at intervals along the front and rear directions. A slot, and a connecting slot connecting the holding slot and the limiting slot, the limiting slot is connected to the rear side wall and the card insertion slot, the holding portion of the conductive terminal is fixedly inserted in the holding slot, the elastic contact arm of the conductive terminal is inserted in the limiting slot, and the contact point of the elastic contact arm protrudes from the card insertion slot, one end of the connecting arm of the conductive terminal connected to the holding portion is accommodated in the connecting slot, and one end of the connecting arm of the conductive terminal connected to the elastic contact arm is accommodated in the limiting slot, and the other side wall of the steel sheet extending in the up and down direction forms a holding slot reinforcement portion parallel to and opposite to the bottom surface of the holding slot.

[0008] As a further improvement of the present invention, the retaining groove on the plastic body is a T-shaped through groove with an upper end width greater than a lower end width, and an avoidance opening is also provided on the front side wall of the retaining groove. The two opposite side walls of the retaining portion of the conductive terminal are respectively provided with raised barb structures, and the raised barb structures can be embedded in the two opposite side walls of the retaining groove. The lower end of the retaining portion of the conductive terminal is stopped on the step surface between the upper and lower ends of the retaining groove, and the welding foot of the conductive terminal is an L-shaped structure integrally formed at the lower end of the retaining portion. When the conductive terminal is inserted into the terminal accommodating groove from top to bottom, the welding foot can move downward along the avoidance opening on the front side wall of the retaining groove.

[0009] As a further improvement of the present invention, the middle portion of the upper end of the conductive terminal retaining portion is integrally formed with a connecting arm of the conductive terminal by tearing and bending.

[0010] As a further improvement of the present invention, a horizontal pressing platform is formed at the upper end of the conductive terminal holding portion.

[0011] As a further improvement of the utility model, the card insertion slot, retaining slot, connecting slot and upper opening side walls of the limit slot on the plastic body are all formed with chamfered structures, the limit slot is a vertical through structure, and an avoidance notch structure is formed on the steel sheet opposite to the limit slot.

[0012] As a further improvement of the present invention, a plurality of housing positioning grooves are further provided on the plastic body, and the housing positioning grooves can be plugged and positioned with the protruding positioning mechanisms on the housing to which the connector needs to be assembled.

[0013] As a further improvement of the present invention, a Mylar sheet is further provided, which can be attached to the upper surface of the plastic body by electrostatic adsorption and cover the openings of the card insertion slot and the terminal accommodating slot.

[0014] The beneficial effects of the utility model are as follows: the utility model embeds a steel sheet in the plastic body by in-mold injection molding, thereby effectively increasing the strength of the plastic body, so that the strength of the bottom of the card slot, which is the weakest part of the plastic body, is increased, thereby preventing the plastic from breaking during the process of inserting and removing the electronic card. At the same time, the steel sheet can increase the strength of the plastic body at the retaining groove, thereby preventing the retaining portion of the conductive terminal from cracking the plastic body after assembly. The steel sheet of the utility model is also formed with a welding sheet extending from the lower end of the plastic body, which is welded and fixed to the PCB board by the welding sheet, thereby increasing the bonding strength between the product and the PCB board after welding, thereby preventing the product from falling off the PCB board or having poor contact with the PCB board due to external force. A horizontal pressing platform is designed on the retaining part of the new conductive terminal. When the conductive terminal is assembled with the plastic body, the pressing platforms of each conductive terminal are pressed synchronously to ensure the consistency of the assembly depth of each conductive terminal, effectively ensuring the flatness of the soldering feet and contact points after the product is assembled and the connection stability with the PCB board, which is more conducive to improving the signal transmission stability in contact with the electronic card. The conductive terminal of the utility model is assembled from top to bottom, so that the plastic is clamped between the conductive terminal and the PCB board. After the product is welded on the PCB board, the connection stability between the plastic and the conductive terminal is guaranteed. The utility model also reserves a casing positioning groove on the plastic body, which effectively increases the stability of the product assembled into the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a first stereoscopic view of the utility model without the Mylar sheet attached;

[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0017] Figure 3 This is a second stereoscopic view of the present invention without the Mylar sheet attached;

[0018] Figure 4 This is a three-dimensional diagram of the utility model after the mylar sheet is attached;

[0019] Figure 5 It is a three-dimensional exploded view of the utility model;

[0020] Figure 6 This is a front view of the utility model without wheat pull film;

[0021] Figure 7 This is a front view of the utility model with Mylar sheet;

[0022] Figure 8It is a rear view of the utility model;

[0023] Fig. 9 It is a right view of the utility model;

[0024] Fig.10 It is a bottom view of the utility model;

[0025] Fig.11 It is a three-dimensional diagram of the plastic body of the utility model;

[0026] Fig.12 It is a three-dimensional diagram of the steel sheet of the utility model;

[0027] Fig.13 It is a three-dimensional diagram of the conductive terminal of the utility model;

[0028] Fig.14 This is a front view of the position of the steel sheet in the plastic body of the utility model;

[0029] Fig.15 This is a right view of the position of the steel sheet in the plastic body of the utility model;

[0030] Fig.16 This is a bottom view of the position of the steel sheet in the plastic body of the utility model;

[0031] Fig.17 This is a front view of a PCB board used in conjunction with the present utility model;

[0032] Fig.18 It is a schematic diagram of the assembly and welding direction of the conductive terminal of the utility model. DETAILED DESCRIPTION

[0033] Embodiment: A structurally improved FPC connector comprises a plastic body 1 and a conductive terminal 2, wherein the up-down direction, the left-right direction and the front-back direction are three mutually perpendicular directions, and a card insertion slot 11 with an open structure extending in the left-right direction and a plurality of terminal accommodating slots arranged at intervals in the left-right direction are formed on the upper side wall of the plastic body 1, and the terminal accommodating slot is connected with the card insertion slot 11 in the front-back direction, and the conductive terminal 2 comprises a welding foot 21, a retaining portion 22 and an elastic contact portion, and the retaining portion 22 of the conductive terminal 2 is fixedly inserted in the terminal accommodating slot, the welding foot 21 of the conductive terminal 2 extends out of the lower side of the plastic body 1 and can be welded to the PCB board 3 located on the lower side of the plastic body 1, and the elastic contact portion of the conductive terminal 2 extends into the card insertion slot 11 and can be elastically deformed in the front-back direction to tightly press against the electronic card inserted into the card insertion slot 11, and a steel sheet 4 is fixedly arranged on the inner side of the plastic body 1, and the steel sheet 4 comprises a card insertion slot reinforcement portion 41 parallel to and directly facing the bottom surface of the card insertion slot 11.

[0034] By pre-embedding a steel sheet 4 in the plastic body 1, the card slot reinforcement portion 41 of the steel sheet 4 reinforces the weaker part at the bottom of the card slot 11 on the plastic body 1, thereby increasing the strength of the product and preventing the plastic body 1 from being torn during the card insertion and removal process.

[0035] The steel sheet 4 is an L-shaped structure, one side wall of which forms a card slot reinforcement portion 41 parallel to the bottom surface of the card slot 11, and the other side wall thereof extends in the up-down direction. A plurality of hollow structures 42 are provided on at least one side wall of the steel sheet 4. The steel sheet 4 is integrally formed in the plastic body 1 by in-mold injection molding, and the hollow structures 42 on the side walls of the steel sheet 4 are filled with plastic material. The steel sheet 4 adopts a bending structure, and the hollow structures 42 are provided on the steel sheet 4, which can increase the bonding force between the steel sheet 4 and the plastic. It is best to provide the hollow structures 42 on both side walls of the L-shaped structure of the steel sheet 4, so as to further increase the bonding force between the steel sheet 4 and the plastic in all directions.

[0036] The steel sheet 4 is provided with a plurality of welding pieces 43 extending from the lower side of the plastic body 1, and the welding pieces 43 can be welded and fixed to the PCB board 3. The welding pieces 43 formed on the in-mold injection-molded steel sheet 4 can be used to weld it to the PCB board 3 at the same time, which can increase the strength of the product combined with the PCB board 3 after welding.

[0037] The elastic contact portion of the conductive terminal 2 includes an elastic contact arm 23 and a connecting arm 24, one end of the connecting arm 24 is integrally formed on the holding portion 22 of the conductive terminal 2, and the other end of the connecting arm 24 forms an integral structure with the lower end of the elastic contact arm 23 through an arc bend 25. The connecting arm 24 and the holding portion 22 of the conductive terminal 2 together form an inverted U-shaped structure with an opening facing downward, and the elastic contact arm 23 is bent to form a V-shaped structure, and the bent convex surface of the V-shaped structure protrudes toward the card insertion slot 11 to form a contact point 26. The terminal accommodating groove on the plastic body 1 includes a holding groove 12 and a limiting groove 13 arranged at intervals along the front and rear directions, and the holding groove 12 and the limiting groove 13, the limiting groove 13 is connected with the rear side wall and the card insertion slot 11, the holding portion 22 of the conductive terminal 2 is fixedly inserted in the holding groove 12, the elastic contact arm 23 of the conductive terminal 2 is inserted in the limiting groove 13, and the contact point 26 of the elastic contact arm 23 protrudes from the card insertion slot 11, the end of the connecting arm 24 of the conductive terminal 2 connected with the holding portion 22 is accommodated in the connecting groove 14, and the end of the connecting arm 24 of the conductive terminal 2 connected with the elastic contact arm 23 is accommodated in the limiting groove 13, and the other side wall of the steel sheet 4 extending in the up-down direction forms a holding groove reinforcement portion 44 parallel to the bottom surface of the holding groove 12. The holding groove reinforcement portion 44 of the in-mold injection-molded steel sheet 4 penetrates the left and right sides of the product to prevent the contact terminal from cracking the plastic body 1 after assembly.

[0038] The retaining groove 12 on the plastic body 1 is a T-shaped through groove with a width at the upper end greater than that at the lower end. An avoidance opening 121 is further provided on the front side wall of the retaining groove 12. The retaining portion 22 of the conductive terminal 2 has two opposite side walls respectively provided with raised barb structures 221, and the raised barb structures 221 can be embedded in the two opposite side walls of the retaining groove 12. The lower end of the retaining portion 22 of the conductive terminal 2 is stopped on the step surface between the upper and lower ends of the retaining groove 12. The welding foot 21 of the conductive terminal 2 is an L-shaped structure integrally formed at the lower end of the retaining portion 22. When the conductive terminal 2 is inserted into the terminal accommodating groove from top to bottom, the welding foot 21 can move downward along the avoidance opening 121 on the front side wall of the retaining groove 12.

[0039] The above structure allows the conductive terminal 2 to be assembled into the plastic body 1 from top to bottom, so that the plastic is clamped between the conductive terminal 2 and the PCB board 3. After the product is welded to the PCB board 3, it can be ensured that the plastic will not separate from the conductive terminal 2, thereby increasing the stability of the product.

[0040] The middle part of the upper end of the holding portion 22 of the conductive terminal 2 is formed integrally with the connecting arm 24 of the conductive terminal 2 by tearing and bending. The connecting arm 24 of the conductive terminal 2 is formed integrally on the holding portion 22 by tearing and bending, which can improve the strength of the conductive terminal 2 and increase the spacing between the two terminals.

[0041] A horizontal pressing platform 222 is formed on the upper end of the holding portion 22 of the conductive terminal 2. The pressing platform 222 is designed on the upper end of the holding portion 22 of the conductive terminal 2. When assembling the conductive terminals 2, the pressing platforms 222 of each conductive terminal 2 are pressed down synchronously, which can ensure the consistency of the depth of each conductive terminal 2 after assembly, thereby ensuring the flatness of the product after assembly, the stability of the connection with the PCB board 3, and the stability of the signal transmission with the electronic card.

[0042] The card insertion slot 11 , the retaining slot 12 , the connecting slot 14 and the upper opening side walls of the limiting slot 13 on the plastic body 1 are all formed with chamfered structures. The limiting slot 13 is a vertically penetrating structure. The steel sheet 4 is formed with an avoidance notch structure 45 directly opposite to the limiting slot 13 .

[0043] The plastic body 1 is also provided with a plurality of housing positioning grooves 15, which can be plugged and positioned with the raised positioning mechanism on the housing where the connector needs to be assembled. The housing positioning grooves 15 are reserved on the plastic body 1 of the product to increase the stability of the assembly into the housing.

[0044] A Mylar sheet 5 is also provided, which can be attached to the upper surface of the plastic body by electrostatic adsorption and cover the card slot 11 and the terminal receiving slot opening. The Mylar sheet 5 can protect the card slot 11 and the conductive terminal 2 of the product and play a dustproof effect. When the connector is used, the Mylar sheet 5 can be torn off. The Mylar sheet 5 can also be used for automatic patch suction.

Claims

1. A structurally improved FPC connector, comprising a plastic body (1) and a conductive terminal (2), wherein the up-down direction, the left-right direction and the front-back direction are three mutually perpendicular directions, the upper side wall of the plastic body is formed with an open card insertion slot (11) extending in the left-right direction and a plurality of terminal receiving slots arranged at intervals in the left-right direction, the terminal receiving slot being connected to the card insertion slot in the front-back direction, the conductive terminal comprising a soldering foot (21), a retaining portion (22) and an elastic contact portion, the retaining portion of the conductive terminal being fixedly inserted in the terminal receiving slot, the soldering foot of the conductive terminal extending from the lower side of the plastic body and being capable of being soldered to a PCB board (3) located on the lower side of the plastic body, the elastic contact portion of the conductive terminal extending into the card insertion slot and being capable of being elastically deformed in the front-back direction to tightly abut against an electronic card inserted into the card insertion slot, characterized in that: A steel sheet (4) is fixedly arranged inside the plastic body, and the steel sheet comprises a card slot reinforcement portion (41) which is parallel to and directly faces the bottom surface of the card slot.

2. The structurally improved FPC connector according to claim 1, characterized in that: The steel sheet is an L-shaped structure, one side wall of which forms a card slot reinforcement portion parallel to the bottom surface of the card slot, and the other side wall of which extends in the up-down direction. A plurality of hollow structures (42) are provided on at least one side wall of the steel sheet. The steel sheet is integrally formed in a plastic body by in-mold injection molding, and the hollow structures on the side wall of the steel sheet are filled with plastic material.

3. The structurally improved FPC connector according to claim 2, characterized in that: The steel sheet is provided with a plurality of welding sheets (43) extending from the lower side of the plastic body, and the welding sheets can be welded and fixed to the PCB board.

4. The structurally improved FPC connector according to claim 2, characterized in that: The elastic contact portion of the conductive terminal comprises an elastic contact arm (23) and a connecting arm (24), one end of the connecting arm is integrally formed on the holding portion of the conductive terminal, and the other end of the connecting arm is formed into an integral structure with the lower end of the elastic contact arm through an arc bend (25), the connecting arm and the holding portion of the conductive terminal together form an inverted U-shaped structure with an opening facing downward, the elastic contact arm is bent to form a V-shaped structure, the bent convex surface of the V-shaped structure protrudes toward the card insertion slot to form a contact point (26), the terminal accommodating groove on the plastic body comprises a holding groove (12) and a limiting groove (12) arranged at intervals along the front-to-back direction. 3), and a connecting groove (14) connecting the holding groove and the limiting groove, the limiting groove is connected to the rear side wall and the card insertion groove, the holding portion of the conductive terminal is fixedly inserted in the holding groove, the elastic contact arm of the conductive terminal is inserted in the limiting groove, and the contact point of the elastic contact arm protrudes from the card insertion groove, the end of the connecting arm of the conductive terminal connected to the holding portion is accommodated in the connecting groove, and the end of the connecting arm of the conductive terminal connected to the elastic contact arm is accommodated in the limiting groove, and the other side wall of the steel sheet extending in the up-down direction forms a holding groove reinforcement portion (44) parallel to and opposite to the bottom surface of the holding groove.

5. The structurally improved FPC connector according to claim 4, characterized in that: The retaining groove on the plastic body is a T-shaped through groove with a width at the upper end greater than that at the lower end. The retaining groove is also provided with an avoidance opening (121) on the front side wall. The retaining portion of the conductive terminal is provided with raised barb structures (221) on two opposite side walls. The raised barb structures can be embedded in the two opposite side walls of the retaining groove. The lower end of the retaining portion of the conductive terminal is stopped on a step surface between the upper and lower ends of the retaining groove. The welding foot of the conductive terminal is an L-shaped structure integrally formed at the lower end of the retaining portion. When the conductive terminal is inserted into the terminal accommodating groove from top to bottom, the welding foot can move downward along the avoidance opening on the front side wall of the retaining groove.

6. The structurally improved FPC connector according to claim 4, characterized in that: The middle part of the upper end of the conductive terminal holding portion is integrally formed into a connecting arm of the conductive terminal by tearing and bending.

7. The structurally improved FPC connector according to claim 6, characterized in that: A horizontal material pressing platform (222) is formed at the upper end of the conductive terminal holding portion.

8. The structurally improved FPC connector according to claim 4, characterized in that: The card insertion slot, the retaining slot, the connecting slot and the upper opening side wall of the limiting slot on the plastic body are all formed with chamfered structures. The limiting slot is a vertical through structure. The steel sheet is formed with an avoidance notch structure (45) directly opposite to the limiting slot.

9. The structurally improved FPC connector according to claim 1, characterized in that: The plastic body is also provided with a plurality of housing positioning grooves (15), and the housing positioning grooves can be plugged and positioned with the protruding positioning mechanisms on the housing to which the connector needs to be assembled.

10. The structurally improved FPC connector according to claim 1, characterized in that: A Mylar sheet (5) is also provided, which can be attached to the upper surface of the plastic body by electrostatic adsorption and covers the openings of the card insertion slot and the terminal accommodating slot.

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