Structure-enhanced FPC connector

Abstract

The utility model discloses a structure-enhanced FPC (Flexible Printed Circuit) connector. Two sides of the bottom surface of an insertion cavity are respectively and integrally provided with a limiting part in a protruding manner upwards; the locking terminal comprises an elastic part, a locking part is integrally and upwards arranged on the elastic part in a protruding mode, locking grooves matched with the limiting part and the locking part are formed in the two sides of the matched body in a concave mode, the limiting part and the locking part are both clamped into the locking grooves, the limiting part and the locking part are clamped into the locking grooves respectively, and therefore the limiting effect on the body is achieved. Even in a vibrating use environment, the FPC board and the connector terminals can be prevented from falling off, meanwhile, the upper cover comprises a rear seat and an extrusion part integrally extending forwards from the rear seat, and the extrusion part is inserted into the insertion cavity and promotes the connection part to be in extrusion contact with the signal terminal set, so that the signal terminal set is prevented from falling off. The holding force between the signal terminal group and the FPC board is increased through the extrusion part, so that the stability of signal transmission between the FPC connectors is ensured, and the condition of poor contact is avoided.

Description

Technical Field

[0001] The utility model relates to the technology of connector field, in particular to a structurally enhanced FPC connector. Background Art

[0002] FPC is a highly reliable and flexible printed circuit board made of polyimide or polyester film as the substrate. It has the characteristics of high wiring density, light weight, thin thickness and good bendability. It is a technology developed by the United States in the 1970s for the development of space rocket technology. It is a printed circuit made of polyester film or polyimide as the substrate with high reliability and excellent flexibility. By embedding the circuit design on the bendable thin plastic sheet, a large number of precision components are stacked in a narrow and limited space, thus forming a bendable flexible circuit. This kind of circuit can be bent and folded at will, is light in weight, small in size, has good heat dissipation, and is easy to install, breaking through the traditional interconnection technology. In the structure of the flexible circuit, the materials are insulating film, conductor and adhesive.

[0003] In the FPC connector, direct contact and conduction between the FPC board and the terminals are required. Since the FPC board itself is relatively thin, when the terminals in the connector contact, the holding force between the terminals and the FPC board is insufficient, and poor contact is prone to occur. Especially when used in harsh vibration environments, the FPC board may fall off from the terminals due to vibration, thereby affecting the use of the FPC connector. Therefore, it is necessary to further improve the existing FPC connector structure. Utility Model Content

[0004] In view of this, the utility model aims to address the deficiencies in the prior art, and its main purpose is to provide a structurally enhanced FPC connector, which can effectively solve the problems of insufficient holding force between the terminals and the FPC board in the existing FPC connector, easy poor contact, and easy falling off in vibration usage scenarios.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A structurally enhanced FPC connector comprises a rubber core, a terminal group, an FPC board and an upper cover; the rubber core has an insertion cavity with a rear end opening, and both sides of the bottom surface of the insertion cavity are integrally provided with a limit portion protruding upward; the terminal group comprises a signal terminal group and a locking terminal arranged in a transverse interval, the signal terminal group and the locking terminal are both arranged on the rubber core and located in the insertion cavity, the locking terminal comprises a first main body portion arranged on the rubber core and an elastic portion integrally extending backward from the first main body portion, a locking portion integrally protruding upward on the elastic portion, and the locking portion is located beside the limit portion; the FPC board comprises a body and a connecting portion, the connecting portion is inserted into the insertion cavity and is in contact and conduction with the signal terminal group, and locking grooves cooperating with the limit portion and the locking portion are concavely provided on both sides of the connecting portion, and the aforementioned limit portion and the locking portion are both snapped into the locking grooves; the upper cover comprises a rear seat and an extrusion portion integrally extending forward from the rear seat, the extrusion portion is inserted into the insertion cavity and causes the connecting portion to be in extrusion contact with the signal terminal group.

[0007] As a preferred embodiment, the upper side wall of the insertion cavity is provided with a plurality of positioning grooves arranged at intervals laterally, and the lower side wall of the insertion cavity is provided with a plurality of movable grooves arranged at intervals laterally, and the plurality of movable grooves correspond to the upper and lower positions of the plurality of positioning grooves; the terminal group includes a plurality of signal terminals arranged at intervals laterally, and each signal terminal includes a second main body portion and a positioning portion and an elastic contact portion extending backward integrally from the rear end of the second main body portion, each positioning portion is located in a corresponding positioning groove, and each elastic contact portion is located in a corresponding movable groove.

[0008] As a preferred solution, the rear end of the elastic contact portion is integrally provided with two protrusions which are arranged in a front-to-back space, and the two protrusions are both in contact and conduction with the connecting portion of the FPC board.

[0009] As a preferred solution, the limiting parts are two and are arranged symmetrically in the transverse direction. Correspondingly, there are two locking terminals, which are respectively arranged on the left and right sides of the signal terminal group and are located beside the corresponding limiting parts; the locking grooves are two and are arranged symmetrically in the left and right directions.

[0010] As a preferred solution, the upper and lower surfaces of the front end of the extrusion portion are respectively provided with guide surfaces.

[0011] As a preferred solution, a first splicing part is provided on the left and right sides of the rubber core, and a second splicing part cooperating with the first splicing part is integrally extended forward from the left and right sides of the rear seat, and two clamping parts are respectively mounted on the two first splicing parts and the two second splicing parts to splice and fix the corresponding first splicing parts and the second splicing parts together.

[0012] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0013] The two sides of the bottom surface of the insertion cavity are respectively provided with a limit portion protruding upwards; the locking terminal includes a first main body portion arranged on the rubber core and an elastic portion extending backwards from the first main body portion, a locking portion is integrally provided on the elastic portion to protrude upwards, and locking grooves cooperating with the limit portion and the locking portion are concavely provided on both sides of the matching body, the aforementioned limit portion and the locking portion are both inserted into the locking groove, so that the limit portion and the locking portion are respectively inserted into the locking groove, thereby limiting the body, even in a vibrating use environment, it can prevent the FPC board and the connector terminal from falling off, and the upper cover includes a rear seat and an extrusion portion extending forwards from the rear seat, the extrusion portion is inserted into the insertion cavity and causes the connecting portion to be extruded and contacted with the signal terminal group, so that the extrusion portion is used to increase the holding force between the signal terminal group and the FPC board, thereby ensuring the stability of signal transmission between the FPC connectors and avoiding poor contact.

[0014] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the decomposed state of a preferred embodiment of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of a preferred embodiment of the utility model;

[0018] Figure 4 It is a partial assembly diagram of a preferred embodiment of the utility model.

[0019] Description of the accompanying drawings:

[0020] 10. Rubber core 101, insertion cavity

[0021] 102, positioning slot 103, movable slot

[0022] 11. Limiting part 12. First splicing part

[0023] 20. Terminal group 21. Signal terminal group

[0024] 211, signal terminal 212, second main body

[0025] 213, positioning portion 214, elastic contact portion

[0026] 215. Projection 22. Locking terminal

[0027] 221, first main body portion 222, elastic portion

[0028] 223, locking portion 30, FPC board

[0029] 301, locking groove 31, body

[0030] 32. Connecting part 40. Upper cover

[0031] 41. Rear seat 42. Extrusion part

[0032] 43. Guide surface 44. Second joint portion

[0033] 50. Clamping parts. DETAILED DESCRIPTION

[0034] Please refer to Figures 1 to 4 As shown, it shows the specific structure of a preferred embodiment of the utility model, which includes a rubber core 10, a terminal group 20, an FPC board 30 and an upper cover 40.

[0035] The rubber core 10 has an insertion cavity 101 with a rear end opening, and both sides of the bottom surface of the insertion cavity 101 are integrally provided with limit parts 11 protruding upward; in this embodiment, the upper side wall of the insertion cavity 101 is provided with a plurality of positioning grooves 102 arranged at intervals in the horizontal direction, and the lower side wall of the insertion cavity 101 is provided with a plurality of movable grooves 103 arranged at intervals in the horizontal direction, and the plurality of movable grooves 103 correspond to the upper and lower positions of the plurality of positioning grooves 102; the limit parts 11 are two arranged symmetrically in the horizontal direction; and the first splicing part 12 is provided on the left and right sides of the rubber core 10.

[0036] The terminal group 20 includes a signal terminal group 21 and a locking terminal 22 arranged in a transverse interval. The signal terminal group 21 and the locking terminal 22 are both arranged on the rubber core 10 and located in the insertion cavity 101. The locking terminal 22 includes a first main body 221 arranged on the rubber core 10 and an elastic part 222 extending backward from the first main body 221. The elastic part 222 is integrally provided with a locking part 223 protruding upward, and the locking part 223 is located beside the limiting part 11. In this embodiment, the terminal group 21 includes a plurality of signal terminals 21 arranged in a transverse interval. 11, each signal terminal 211 includes a second main body 212 and a positioning portion 213 and an elastic contact portion 214 extending backward from the rear end of the second main body 212, each positioning portion 213 is located in the corresponding positioning groove 102, and each elastic contact portion 214 is located in the corresponding movable groove 103; the rear end of the elastic contact portion 214 is integrally provided with two protrusions 215 arranged front and back at intervals; the locking terminal 22 is set in two, which are respectively arranged on the left and right sides of the signal terminal group 21 and are located beside the corresponding limit portion 11.

[0037] The FPC board 30 includes a body 31 and a connecting portion 32, the connecting portion 32 is inserted into the insertion cavity 101 and is in contact with the signal terminal group 21, and locking grooves 301 are recessed on both sides of the connecting portion 32 to cooperate with the limiting portion 11 and the locking portion 223. The limiting portion 11 and the locking portion 223 are both inserted into the locking grooves 301, so that the FPC board 30 is locked in the insertion cavity 101 to prevent the FPC board from falling off from the terminal group 20, so that it can be used in a vibration environment; in this embodiment, the two protrusions 215 are in contact with the connecting portion 32 of the FPC board 30, and the setting of the two protrusions 215 can increase the contact area between the signal terminal 211 and the connecting portion 32, further ensuring the effect of signal transmission; the locking grooves 301 are two symmetrically arranged on the left and right, and the setting of the two limiting portions 11 and the two locking portions 223 can further prevent the FPC board 30 from falling off from the signal terminal group 21.

[0038] The upper cover 40 includes a rear seat 41 and an extrusion portion 42 integrally extending forward from the rear seat 41. The extrusion portion 42 is inserted into the insertion cavity 101 and causes the connection portion 32 to be extruded and contacted with the signal terminal group 21. The arrangement of the extrusion portion 42 increases the holding force between the connection portion 32 and the signal terminal group 21, thereby preventing poor contact. In this embodiment, the upper and lower surfaces of the front end of the extrusion portion 42 are respectively provided with guide surfaces 43, and the guide surfaces 43 are used to facilitate the insertion of the extrusion portion 42 into the insertion cavity. The left and right sides of the rear seat 41 integrally extend forward to form second splicing portions 44 that cooperate with the first splicing portion 12. The two clamping members 50 are respectively sleeved on the two first splicing portions 12 and the two second splicing portions 44 and splice and fix the corresponding first splicing portions 12 and the second splicing portions 44 together, thereby preventing the upper cover 40 from falling off from the rubber core 10, and further ensuring the holding force between the signal terminal group 21 and the connection portion 32.

[0039] The design focus of the utility model is that: the two sides of the bottom surface of the insertion cavity are respectively provided with a limit portion protruding upwards; the locking terminal includes a first main body portion arranged on the rubber core and an elastic portion extending backwards from the first main body portion, a locking portion is integrally provided on the elastic portion and protrudes upwards, and locking grooves cooperating with the limit portion and the locking portion are concavely provided on both sides of the matching body, the aforementioned limit portion and the locking portion are both inserted into the locking groove, so that the limit portion and the locking portion are respectively inserted into the locking groove, thereby playing a limiting role on the body, even in a vibrating use environment, it can prevent the FPC board and the connector terminal from falling off, and the upper cover includes a rear seat and an extrusion portion extending forwards from the rear seat, the extrusion portion is inserted into the insertion cavity and causes the connecting portion to be extruded and contacted with the signal terminal group, so that the extrusion portion is used to increase the holding force between the signal terminal group and the FPC board, thereby ensuring the stability of signal transmission between the FPC connectors and avoiding poor contact.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A structurally enhanced FPC connector, characterized in that: The invention comprises a rubber core, a terminal group, an FPC board and an upper cover; the rubber core has an insertion cavity with a rear end opening, and limiting parts are integrally provided on both sides of the bottom surface of the insertion cavity; the terminal group comprises a signal terminal group and a locking terminal arranged in a transverse interval, the signal terminal group and the locking terminal are both arranged on the rubber core and located in the insertion cavity, the locking terminal comprises a first main body portion arranged on the rubber core and an elastic part integrally extending backward from the first main body portion, a locking part is integrally provided on the elastic part and upwardly protrudes, and the locking part is located beside the limiting part; the FPC board comprises a body and a connecting part, the connecting part is inserted into the insertion cavity and is in contact and conduction with the signal terminal group, locking grooves are concavely provided on both sides of the connecting part and matched with the limiting part and the locking part, and the aforementioned limiting part and the locking part are both stuck in the locking grooves; the upper cover comprises a rear seat and an extrusion part integrally extending forward from the rear seat, the extrusion part is inserted into the insertion cavity and causes the connecting part to be in extrusion contact with the signal terminal group.

2. The structurally enhanced FPC connector according to claim 1, characterized in that: The upper side wall of the insertion cavity is provided with a plurality of positioning grooves arranged at intervals in transverse direction, and the lower side wall of the insertion cavity is provided with a plurality of movable grooves arranged at intervals in transverse direction, and the plurality of movable grooves correspond to the upper and lower positions of the plurality of positioning grooves; the terminal group includes a plurality of signal terminals arranged at intervals in transverse direction, and each signal terminal includes a second main body portion and a positioning portion and an elastic contact portion extending backward integrally from the rear end of the second main body portion, each positioning portion is located in a corresponding positioning groove, and each elastic contact portion is located in a corresponding movable groove.

3. The structurally enhanced FPC connector according to claim 2, characterized in that: The rear end of the elastic contact portion is integrally provided with two protrusions which are arranged in a front-to-back space and are in contact with and connected to the connection portion of the FPC board.

4. The structurally enhanced FPC connector according to claim 1, characterized in that: There are two limit parts arranged symmetrically in the transverse direction, and correspondingly, there are two locking terminals, which are respectively arranged on the left and right sides of the signal terminal group and located beside the corresponding limit parts; there are two locking grooves arranged symmetrically in the left and right directions.

5. The structurally enhanced FPC connector according to claim 1, characterized in that: The upper and lower surfaces of the front end of the extrusion portion are respectively provided with guide surfaces.

6. The structurally enhanced FPC connector according to claim 1, characterized in that: The left and right sides of the rubber core are provided with first splicing parts, and the left and right sides of the rear seat are integrally extended forward to have second splicing parts that cooperate with the first splicing parts. The two clamping parts are respectively mounted on the two first splicing parts and the two second splicing parts to splice and fix the corresponding first splicing parts and the second splicing parts together.

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