CN211789637U

CN211789637U - One-to-many FPC (flexible printed circuit) connecting structure

Info

Publication number: CN211789637U
Application number: CN202020547080.3U
Authority: CN
Inventors: 梁振华; 童雨舟; 周利; 王恒昌
Original assignee: Harbin Ship Optoelectronics Wuhan Co ltd
Current assignee: Harbin Ship Optoelectronics Wuhan Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-10-27
Anticipated expiration: 2030-04-14

Abstract

The utility model relates to a one-to-many FPC connecting structure, which comprises a fixed end and at least two access ends, wherein the fixed end and the access ends are respectively electrically connected with one FPC; the fixed end is provided with a plurality of groups of A contacts and positioning holes which correspond one to one, the A contacts are connected with the FPC, and the positioning holes penetrate through the fixed end; the access end is provided with a plurality of groups of first limiting blocks and contacts B which correspond one to one in parallel, the contacts B are connected with another FPC, the first limiting blocks are hinged with the end part of the access end, the first limiting blocks can rotate along the hinged point, and each first limiting block is fixedly provided with a contact C and a positioning head; when the positioning head is embedded into the positioning hole, the corresponding contact A, the contact B and the contact C are electrically conducted; when the positioning head is separated from the positioning hole, the electrical connection between the contacts is disconnected. The connection structure can simultaneously transfer one FPC to at least two FPCs, has simple combination, accurate alignment and reliable connection, can select pins needing to be conducted, and is convenient for subsequent detection.

Description

One-to-many FPC (flexible printed circuit) connecting structure

Technical Field

The utility model relates to a circuit switching technical field, concretely relates to FPC connection structure of one minute or more.

Background

The mode of being qualified for the next round of competitions of present liquid crystal display terminal electrical control is through FPC (Flexible Printed Circuit, namely Flexible Circuit board) adapter (as shown in fig. 1), be connected the electric part of liquid crystal module with mainboard electrical control part, can't accurate control to the location that the FPC winding displacement inserted the adapter, through traditional adapter switching, easy skew, interference killing feature is poor, and under some circumstances, need to connect a FPC to a plurality of FPCs on, just need one more to connect reliably, FPC connection structure that can divide into a plurality of.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a FPC connection structure more than one to the problem of selecting the pin when solving prior art's FPC and connecting is not convenient for.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a one-to-many FPC connecting structure is used for carrying out FPC switching and comprises a fixed end and at least two access ends, wherein the fixed end and the access ends are respectively and correspondingly electrically connected with one FPC one by one; a plurality of groups of A contacts and positioning holes which correspond one to one are fixedly arranged on the fixed end, the A contacts are connected with the FPC through conductive connecting pieces, and the positioning holes penetrate through the fixed end; the access end is provided with a plurality of groups of first limiting blocks and contacts B which correspond one to one in parallel, the contacts B are fixedly arranged on the access end and are connected with other FPCs (flexible printed circuits) through conductive connecting pieces, the first limiting blocks are hinged with the end part of the access end and can rotate along the hinged point, and each first limiting block is fixedly provided with a contact C and a positioning head; when the positioning head is embedded into the positioning hole, the corresponding contact A, the corresponding contact B and the corresponding contact C are electrically conducted; when the positioning head is separated from the positioning hole, the electrical connection between the corresponding contact A and the contact C is at least disconnected.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, a second limiting block is fixedly arranged on each of two sides of the contact A, and when the access end is connected with the fixed end, the first limiting blocks are located between the two second limiting blocks.

Furthermore, the positioning head is in an inverted cone shape, the vertex of the inverted cone shape faces the positioning hole, an annular groove is arranged between the positioning head and the first limiting block, and the groove width of the annular groove is larger than the height of the positioning hole.

Furthermore, the positioning hole is arranged in the coverage range of the conductive connecting piece connected with the contact A, and one end of the contact A, which is close to the access end, is raised.

Further, one end of the B contact close to the fixed end is protruded.

Further, the C contact protrudes out of the surface of the first limiting block, and the length of the C contact is larger than the distance from the A contact to the B contact.

The utility model has the advantages that: the FPC connecting structure of the utility model can transfer one FPC to at least two FPCs simultaneously, the combination is simple, the alignment is accurate, each group of contact points has a fixing mode, a transfer device is saved, the deviation is not easy to occur, and the anti-interference performance is high; the fixed end and the access end are in butt joint and then can be selectively connected by pressing a required contact point, so that function realization and detection are facilitated; the pin is positioned accurately, and the connection state can be checked by observing whether the positioning head is pressed in place or not.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic view of the installation effect of the present invention;

FIG. 3 is a schematic view of the structure of the present invention;

FIG. 4 is a schematic view of the installation of a single set of contacts according to the present invention;

FIG. 5 is a schematic view of the first stopper structure of the present invention;

fig. 6 is a schematic diagram of the single-group contact matching of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the fixed end, 11, A contact, 12, locating hole, 13, second stopper, 2, incoming end, 21, B contact, 22, first stopper, 2201, C contact, 2202, locating head, 23, pin joint, 3, first copper foil, 4, second copper foil.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Fig. 1 is a schematic diagram of a prior art FPC-to-FPC adapter for splicing FPC1 and FPC2 together through the adapter, typically two FPCs are spliced together one by one through an adapter. However, in practical applications, in some cases, one FPC needs to be simultaneously connected to at least two or more FPCs, the number of pins of the connected FPCs is not necessarily the same, the positioning of the FPC cable inserted into the connector by direct insertion cannot be accurately controlled, and the one-to-one insertion mode cannot meet all requirements. The adapter plate and the connector are used for switching, the whole pin connection part possibly has a phenomenon of offset due to the influence of external factors (such as touching the connector), and the anti-interference capability is poor; and once inserted, all the connection pins are switched out, which cannot satisfy the situation that only part of the pins need to be connected in some situations, such as detection.

Fig. 2 to fig. 6 show a flexible FPC connection method provided in this embodiment, a single FPC can be simultaneously connected to two or more FPCs according to the use requirements, pins to be turned on can be freely selected during connection, the operation is simple, the positioning and connection reliability of the pins are good, and various use requirements can be met.

Fig. 2 to 3 show a one-to-many FPC connection structure for performing a switching between a plurality of FPCs, particularly a switching for simultaneously tapping one FPC to a plurality of FPCs, which includes a fixed end 1 and at least two access ends 2, and in this embodiment, the example of tapping the FPC1 to the

FPCs

2 and 3 is described. The fixed end 1 and the access end 2 are respectively electrically connected with one FPC in a one-to-one correspondence manner; as shown in fig. 2 or fig. 3, the FPC1 is correspondingly connected to the fixed end 1, the

FPCs

2 and 3 are respectively and correspondingly connected to the access end 2, and the number of pins of the

FPCs

2 and 3 is not necessarily the same, and may be set according to actual requirements. In the present embodiment, the access terminal 2 will be referred to as either one of FPC2 or FPC3, and for convenience of description, the access terminal 2 of FPC2 will be referred to as an example. The fixed A contact 11 and the locating hole 12 that are equipped with the multiunit one-to-one on stiff end 1, A contact 11 is connected with FPC1 through fixed first copper foil 3 that sets up on stiff end 1, and first copper foil 3 is as FPC 1's pin, and each A contact 11 corresponds electric connection with a pin one-to-one of FPC1 respectively promptly. The positioning hole 12 is a through hole and penetrates through the fixing end 1; a plurality of groups of first limit blocks 22 and B contacts 21 which are in one-to-one correspondence are arranged on the access end 2 side by side, the B contacts 21 are fixedly installed on the access end 2, the B contacts 21 are connected with an FPC2 through second copper foils 4 which are fixedly arranged on the surface of the access end 2, the copper foils are used as pins of an FPC2, namely, each B contact 21 is electrically connected with one pin of an FPC2 in one-to-one correspondence, the first limit blocks 22 are hinged to the end portion of the access end 2, the hinge mode can adopt a pin hinge mode or other hinge modes, the first limit blocks 22 can rotate along a hinge point 23, the first limit blocks 22 do not interfere with the B contacts 21 in the rotation process, each first limit block 22 is fixedly provided with a C contact 2201 and a positioning head 2202, and the positioning head 2202 can be pressed into the positioning hole 12; when the positioning head 2202 is pressed to be embedded into the positioning hole 12, the corresponding a contact 11, the B contact 21 and the C contact 2201 are electrically conducted, so that the conduction between the FPC1 and the selected group of pins on the FPC2 is completed; when the positioning head 2202 is separated from the positioning hole 12, at least the electrical connection between the corresponding a contact 11 and the C contact 2201 is broken, i.e. the disconnection of the selected group of pins on the FPC1 and the FPC2 is completed.

As shown in fig. 2-3, the two sides of the contact a 11 are further respectively and fixedly provided with a second limiting block 13, when the access end 2 is connected with the corresponding pin on the fixed end 1, the first limiting block 22 is located between the second limiting blocks 13 and used for limiting the pin, so that the pin is prevented from being deviated after being connected, and the connection reliability is improved.

As shown in fig. 4 to 5, the positioning head 2202 is in an inverted cone shape, a vertex of the cone shape faces the positioning hole 12, an annular groove is formed between the positioning head 2202 and the first limiting block 22, the groove width of the annular groove is larger than the height of the positioning hole 12, the positioning head 2202 is clamped at the bottom of the fixing end 1 after connection is completed, and the fixing end 1 is located in the annular groove at this time. When the positioning head 2202 passes through the positioning hole 12, the first limiting block 22 drives the C contact 2201 installed on the positioning head to be respectively communicated with the a contact 11 and the B contact 21, so that the effect of mutual electrical conduction of the three contacts is achieved, and corresponding pins on the two FPCs are connected. The first limiting block 22 is preferably made of a plastic material with certain elasticity, such as a rubber material, and can be pulled out again as required after being connected each time while having insulation property so as to be reused, thereby saving resources.

As shown in fig. 3 and 4, the positioning holes 12 are disposed in the coverage area of the first copper foil 3 connected to the a contacts 11, that is, each positioning hole 12 corresponds to one a contact 11, each first stopper 22 corresponds to one positioning hole 12, that is, each group of a contacts 11, B contacts 21, and C contacts 2201 corresponds to one another, further, one pin on the FPC1 can only correspond to one pin on the FPC2, and each group of pins corresponds to one another. One end of the contact A11 close to the access end 2 is protruded, so that the contact A11 and the contact C2201 are pressed together more reliably, and poor contact between the contacts is prevented. Also, as shown in fig. 6, the end of the B-contact 21 near the fixed end 1 may be provided as a protrusion to increase the reliability of the connection between the B-contact 21 and the C-contact 2201.

As shown in fig. 5, the C contact 2201 protrudes out of the surface of the first limiting block 22, which is beneficial to tightly press-connecting the C contact 2201 with the a contact 11 and the B contact 21, and prevents poor contact between the contacts; the length of the C contact 2201 is greater than the distance from the a contact 11 to the B contact 21, so that the C contact 2201 can be conducted with the a contact 11 and the B contact 21 at the same time.

The working principle is as follows:

the utility model discloses a connection structure is the special parts, can set up FPC's input into the incoming end 2 of this embodiment, the output sets up to the stiff end 1 of this embodiment, and stiff end 1 is not necessarily the same with the pin number of incoming end 2, when carrying out the switching between FPC and other FPC occasionally, involves to switch a FPC to a plurality of FPC simultaneously on, a plurality of different pins on a stiff end 1 correspond simultaneously and connect a plurality of incoming ends 2 promptly. If when a plurality of different FPCs are switched with one FPC, the FPC1 to be connected is connected with the fixed end 1, and the FPCs 2 and the FPCs 3 or even more FPCs are respectively connected with the respective access ends 2, and then the access ends 2 are respectively butted with the fixed end 1. Specifically, the contact a 11 and the contact B21 corresponding to the pin to be connected are selected, then the positioning head 2202 of the selected contact B21 corresponding to the first limiting block 22 is pressed into the positioning hole 12 on the fixing end 1, that is, the pin to be connected on the FPC1 and the FPC2 is reliably connected, and after the connection is completed, the second limiting block 13 limits the first limiting block 22 to prevent the pin from deviating, so that the connection stability is enhanced. When it is necessary to disconnect some pins, the connection between the positioning head 2202 and the positioning hole 12 is opened, and the first stopper 22 is rotated, i.e., the connection of the corresponding pin is disconnected. The connection structure is particularly suitable for detecting the FPC connection end, pins needing to be switched on or off can be selected at will, the operation is simple and convenient, and the applicability is strong.

The FPC connecting structure of the utility model can transfer one FPC to at least two FPCs simultaneously, the combination is simple, the alignment is accurate, each group of contact points has a fixing mode, a transfer device is saved, the deviation is not easy to occur, and the anti-interference performance is high; the fixed end and the access end are in butt joint and then can be selectively connected by pressing a required contact point, so that function realization and detection are facilitated; the pin is positioned accurately, and the connection state can be checked by observing whether the positioning head is pressed in place or not.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A one-to-many FPC connecting structure is used for carrying out FPC switching, and is characterized by comprising a fixed end (1) and at least two access ends (2), wherein the fixed end (1) and the access ends (2) are respectively electrically connected with one FPC in a one-to-one correspondence manner; a plurality of groups of A contacts (11) and positioning holes (12) which correspond to each other one by one are fixedly arranged on the fixed end (1), the A contacts (11) are connected with the FPC through conductive connecting pieces, and the positioning holes (12) penetrate through the fixed end (1); a plurality of groups of first limit blocks (22) and B contacts (21) which are in one-to-one correspondence are arranged on the access end (2) side by side, the B contacts (21) are fixedly installed on the access end (2), the B contacts (21) are connected with other FPCs (flexible printed circuit) through conductive connecting pieces, the first limit blocks (22) are hinged to the end portion of the access end (2), the first limit blocks (22) can rotate along a hinge point (23), and each first limit block (22) is fixedly provided with a C contact (2201) and a positioning head (2202); when the positioning head (2202) is embedded into the positioning hole (12), the corresponding A contact (11), the corresponding B contact (21) and the corresponding C contact (2201) are electrically conducted; when the positioning head (2202) is separated from the positioning hole (12), at least the electrical connection between the corresponding A contact (11) and the C contact (2201) is disconnected.

2. The one-to-many FPC connection structure of claim 1, wherein two sides of said A contact (11) are further fixed with second stoppers (13), respectively, and when said incoming end (2) is connected with said fixed end (1), said first stopper (22) is located between said two second stoppers (13).

3. The one-to-many FPC connection structure of claim 1, wherein the positioning head (2202) has an inverted cone shape, the vertex of the inverted cone shape faces the positioning hole (12), and an annular groove is disposed between the positioning head (2202) and the first stopper (22), and the groove width of the annular groove is greater than the height of the positioning hole (12).

4. A one-to-many FPC connecting structure according to claim 1, wherein the positioning hole (12) is provided within a coverage of a conductive connecting member connected to the a contact (11), and one end of the a contact (11) near the inlet (2) is protruded.

5. A one-to-many FPC connection structure according to claim 1, wherein the B contact (21) protrudes near one end of the fixed end (1).

6. The one-to-many FPC connection structure according to claim 1, wherein the C contact (2201) protrudes from the surface of the first stopper (22), and the length of the C contact (2201) is greater than the distance from the A contact (11) to the B contact (21).