CN209896292U

CN209896292U - FPC connector

Info

Publication number: CN209896292U
Application number: CN201920729805.8U
Authority: CN
Inventors: 洪新江; 张颖
Original assignee: ZHEJIANG XINFUER ELECTRONIC Co Ltd
Current assignee: ZHEJIANG XINFUER ELECTRONIC Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-01-03
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses a FPC connector, which comprises a base body, a gland body, a conductive terminal and a positioning welding piece; the rear end of each conductive terminal is provided with a plug pin, the front end of each conductive terminal is provided with a contact elastic arm and an arc-shaped hook, the gland body is provided with a connecting shaft, all the connecting shafts are coaxially arranged, and the connecting shafts are matched with the arc-shaped hooks in a one-to-one correspondence manner; be equipped with the clearance between the lower cell wall of contact bullet arm downside and terminal slot, the contact is gone up in the direction after to in the past and is provided with first contact arch, second contact arch and support arch according to the preface, and first contact arch and second contact arch are upwards protruding, and the bellied height of first contact is higher than the bellied height of second contact, and the support arch is bellied downwards. The utility model provides a when the FPC connector used, each conductive terminal was two point contacts on the golden finger on its FPC winding displacement and the connector, had increased the electric connection reliability to the tensile strength between connector and the FPC winding displacement is strong.

Description

FPC connector

Technical Field

The utility model relates to a FPC connector belongs to electric connector structural design field.

Background

The FPC connector is used for clamping and connecting an FPC flat cable, and signal connection and transmission between the FPC flat cable and an internal pairing element of an electronic product are facilitated. The FPC connector generally adopts a front-insertion front-lifting structure and a front-insertion rear-lifting structure, and mainly includes a base body, conductive terminals fixed to the base body side by side, and a gland body that cooperates with the base body to clamp and connect the FPC. In the existing FPC connector, the gold fingers of the FPC cable are in single-point contact with all conductive terminals, so that the problem of unstable and reliable electrical performance exists.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a rational in infrastructure FPC connector, conductive terminal is two point contacts with the FPC golden finger on this connector to do benefit to the reliability that improves the electricity and connect.

Realize the utility model discloses the technical scheme of purpose is:

an FPC connector comprises a base body, a gland body, a conductive terminal and a positioning soldering lug; the number of the positioning welding sheets is two, the two positioning welding sheets are respectively fixed at two opposite ends of the base body, welding feet welded with a fixing sheet on a circuit board are arranged on the positioning welding sheets, a plurality of terminal slots are arranged between the two positioning welding sheets on the base body at intervals, and a plurality of conductive terminals are fixed in the terminal slots in a one-to-one correspondence manner;

the rear end of each conductive terminal is provided with a plug pin which extends out of the base body and extends towards the same direction with the welding pin, the front end of each conductive terminal is provided with a contact elastic arm which is contacted with a golden finger on the FPC flat cable to realize electric connection and an arc-shaped hook which is positioned above the contact elastic arm and is bent backwards, the position of the gland body corresponding to each arc-shaped hook is provided with a connecting shaft, all the connecting shafts are arranged coaxially, the connecting shafts are matched with the arc-shaped hooks in a one-to-one correspondence manner, so that the gland body can be rotatably arranged on the upper part of the base body, and the gland body is matched with the base body when in a locking position and is suitable for clamping;

the contact is bounced the arm downside with be equipped with the clearance between the lower cell wall of terminal slot, the contact is bounced upward and is provided with first contact arch, second contact arch and support arch according to the preface in the direction backward in the past on the arm, first contact arch with second contact arch is upwards protruding, and first contact arch highly is higher than the bellied height of second contact, support arch is protruding downwards, and closes on the bellied setting of second contact.

In the above technical scheme, the side end of the gland body is provided with a clamping table, the side end of the base body is provided with a clamping groove, and the clamping table is matched with the clamping groove when the gland body is in the locking position.

In the technical scheme, the upper part of the base body is provided with a positioning hook groove matched with the hook table at the side part of the FPC flat cable.

In the above technical scheme, the positioning welding piece is provided with a limiting part, a limiting shaft coaxially arranged with the connecting shaft is arranged at a position on the gland body corresponding to the limiting part, and the limiting part abuts against the limiting shaft to prevent the connecting shaft from moving out of the opening of the arc-shaped hook.

In the above technical solution, the middle side portion of the fillet is provided with an outward protruding portion.

The utility model discloses has positive effect: adopt the utility model provides a structure, this connector is when using, insert base body front end with the golden finger end of FPC winding displacement, press from both sides the FPC winding displacement through rotating gland body to closure position, because all connecting axles all have the cooperation with corresponding convex crotch on the length direction of gland body, consequently the gland body can apply relatively even pressure to FPC winding displacement golden finger portion width direction on length direction, and first contact arch on the contact bullet arm all contacts with the golden finger with the second contact arch, form the dual contact point structure, the reliability of electricity connection has been guaranteed, concrete contact state is: because support bellied supporting role, the first contact is protruding to receive to make the front end of contacting the elastic arm take place great downward deformation after the extrusion when the gland body is in the closure position, supports bellied second contact arch department and takes place less downward deformation near the second to make the height on first contact arch and the protruding top of second contact keep equal, and all contact with the golden finger.

Drawings

Fig. 1 is a schematic structural view of the FPC connector (the gland body is in the unlocked position) according to the present invention;

fig. 2 is a schematic structural diagram of the FPC connector (the gland body is in the locked position) according to the present invention;

FIG. 3 is a top view of the FPC connector shown in FIG. 2;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 6 is a schematic structural view of the base body of the present invention;

fig. 7 is a schematic structural view of the middle gland body of the present invention;

fig. 8 is a schematic structural view of the conductive terminal of the present invention;

FIG. 9 is a schematic structural view of a positioning tab of the present invention;

fig. 10 is a partial view of the FPC cable of the present invention.

The reference symbols shown in the figures are: 1-a base body; 11-terminal slot; 12-a card slot; 13-positioning hook groove; 2-a gland body; 21-a connecting shaft; 22-a clamping table; 23-a limiting shaft; 3-conductive terminal; 31-a pin; 32-contact spring arm; 321-a first contact bump; 322-second contact bump; 323-supporting protrusions; 33-arc hook; 4-positioning a soldering lug; 41-solder leg; 42-a limiting part; 43-a protrusion; 5-FPC flat cable; 51-a hook platform; 6-gap.

Detailed Description

The following description is made in conjunction with the drawings of the specification for the specific structure of the FPC connector of the present invention:

an FPC connector is shown in the figure and comprises a base body 1, a gland body 2, a conductive terminal 3 and a positioning welding piece 4; the number of the positioning soldering lugs 4 is two, the two positioning soldering lugs 4 are respectively fixed at two opposite ends of the base body 1, the positioning soldering lugs 4 are provided with soldering feet 41 welded with a fixing piece on a circuit board, a plurality of terminal slots 11 are arranged between the two positioning soldering lugs 4 on the base body 1 at intervals, and a plurality of conductive terminals 3 are fixed in the terminal slots 11 in a one-to-one correspondence manner; the rear end of each conductive terminal 3 is provided with a plug pin 31 which extends out of the base body 1 and extends towards the same direction with the welding foot 41, the front end is provided with a contact elastic arm 32 which is contacted with a golden finger on the FPC flat cable 5 to realize electric connection and an arc-shaped hook 33 which is positioned above the contact elastic arm 32 and is bent backwards, the gland body 2 is provided with a connecting shaft 21 at the position corresponding to each arc-shaped hook 33, all the connecting shafts 21 are coaxially arranged, the connecting shafts 21 are matched with the arc-shaped hooks 33 in a one-to-one correspondence manner, so that the gland body 2 can be rotatably arranged at the upper part of the base body 1, and the gland body 2 is matched with the base body 1 when in a locking position to clamp the FPC flat cable 5; a gap 6 is arranged between the lower side of the contact elastic arm 32 and the lower groove wall of the terminal insertion groove 11, a first contact protrusion 321, a second contact protrusion 322 and a support protrusion 323 are sequentially arranged on the contact elastic arm 32 from the front to the back, the first contact protrusion 321 and the second contact protrusion 322 are upward protrusions, the height of the first contact protrusion 321 is higher than that of the second contact protrusion 322, the support protrusion 323 is downward protrusions, and the support protrusion 323 is close to the second contact protrusion 322. By adopting the structure in the embodiment, when the connector is used, the golden finger end of the FPC flat cable 5 is inserted into the front end of the base body 1, the FPC flat cable 5 is clamped to the locking position by rotating the gland body 2, and because all the connecting shafts 21 are matched with the corresponding arc-shaped hooks 33 in the length direction of the gland body 2, the gland body 2 can apply relatively uniform pressure to the width direction of the golden finger part of the FPC flat cable 5 in the length direction, and the first contact protrusion 321 and the second contact protrusion 322 on the contact elastic arm 32 are in contact with the golden finger, so that a double-contact-point structure is formed, the reliability of electrical connection is ensured, and the specific contact state is as follows: due to the supporting effect of the supporting protrusion 323, when the gland body 2 is in the locking position, the first contacting protrusion 321 is pressed to make the front end of the contacting elastic arm 32 generate relatively large downward deformation, and the second contacting protrusion 322 adjacent to the second supporting protrusion 322 generates relatively small downward deformation, so that the heights of the top ends of the first contacting protrusion 321 and the second contacting protrusion 322 are equal, and the first contacting protrusion 321 and the second contacting protrusion 322 are both in contact with the golden finger.

In this embodiment, as shown in fig. 1, fig. 2, fig. 6 and fig. 7, a clamping table 22 is disposed at a side end of the gland body 2, a clamping groove 12 is disposed at a side end of the base body 1, and when the gland body 2 is located at the locking position, the clamping table 22 is matched with the clamping groove 12, so that the gland body 2 is kept at the locking position, and the gland body 2 is prevented from being easily opened, and when the gland body 2 is opened, the gland body 2 is turned upwards with force, so that the clamping table 22 is withdrawn from the clamping groove 12.

In this embodiment, the upper portion of the base body 1 is provided with a positioning hook groove 13 matched with the hook platform 51 at the side portion of the FPC flat cable 5, so that the hook platform 51 on the FPC flat cable 5 is embedded into the positioning hook groove 13 when the FPC flat cable is connected, thereby enhancing the drawing strength between the connector and the FPC flat cable 5, and avoiding the problem that the FPC flat cable falls off due to the pulling of an external force in the using process.

Referring to fig. 5 and 9, as a further improvement of this embodiment, the positioning lug 4 has a limiting portion 42, a position of the gland body 2 corresponding to the limiting portion 42 is provided with a limiting shaft 23 coaxially disposed with the connecting shaft 21, and the limiting portion 42 abuts against the limiting shaft 23 to prevent the connecting shaft 21 from moving out of the opening of the circular arc-shaped hook 33, thereby ensuring effective connection between the gland body 2 and the base body 1.

Referring to fig. 9, in the present embodiment, the solder tail 41 has an outward protrusion 43 on the middle side, and the design of the protrusion 43 enhances the board-holding force between the solder tail 41 and the connection hole of the circuit board after the solder tail 41 is inserted into the connection hole, and the protrusion 43 has a triangular shape.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. An FPC connector comprises a base body (1), a gland body (2), a conductive terminal (3) and a positioning welding piece (4); the number of the positioning soldering lugs (4) is two, the two positioning soldering lugs are respectively fixed at two opposite ends of the base body (1), soldering feet (41) welded with a fixing piece on a circuit board are arranged on the positioning soldering lugs (4), a plurality of terminal slots (11) are arranged between the two positioning soldering lugs (4) on the base body (1) at intervals, and the plurality of conductive terminals (3) are fixed in the terminal slots (11) in a one-to-one correspondence manner;

the rear end of each conductive terminal (3) is provided with a plug pin (31) which extends out of the base body (1) and extends towards the same direction with the welding pin (41), the front end of each conductive terminal is provided with a contact elastic arm (32) which is contacted with a gold finger on the FPC flat cable (5) to realize electric connection and an arc-shaped hook (33) which is positioned above the contact elastic arm (32) and is bent backwards, a connecting shaft (21) is arranged on the gland body (2) corresponding to each arc-shaped hook (33), all the connecting shafts (21) are coaxially arranged, the connecting shafts (21) are matched with the arc-shaped hooks (33) in a one-to-one correspondence manner, so that the gland body (2) can be rotatably arranged at the upper part of the base body (1), and the gland body (2) is matched with the base body (1) when being positioned at a locking position to clamp the FPC flat cable (5);

the contact spring arm is characterized in that a gap (6) is formed between the lower side of the contact spring arm (32) and the lower groove wall of the terminal insertion groove (11), a first contact protrusion (321), a second contact protrusion (322) and a supporting protrusion (323) are sequentially arranged on the contact spring arm (32) from the front to the rear, the first contact protrusion (321) and the second contact protrusion (322) are upward protrusions, the height of the first contact protrusion (321) is higher than that of the second contact protrusion (322), and the supporting protrusion (323) is downward protrusions and close to the second contact protrusion (322).

2. The FPC connector according to claim 1, wherein a clamping table (22) is arranged at a side end of the gland body (2), a clamping groove (12) is arranged at a side end of the base body (1), and the clamping table (22) is matched with the clamping groove (12) when the gland body (2) is in the locked position.

3. The FPC connector according to claim 1, wherein the base body (1) is provided at an upper portion thereof with a positioning hook groove (13) engaged with a side hook (51) of the FPC (5).

4. The FPC connector according to claim 1, 2 or 3, wherein the positioning soldering lug (4) has a limiting portion (42), a limiting shaft (23) coaxially arranged with the connecting shaft (21) is disposed at a position on the gland body (2) corresponding to the limiting portion (42), and the limiting portion (42) abuts against the limiting shaft (23) to prevent the connecting shaft (21) from moving out of the opening of the arc-shaped hook (33).

5. FPC connector according to claim 1, 2 or 3, characterized in that the solder tails (41) have lateral projections (43) directed outwards.