CN116646777A - Locking fixture and positioning and mounting device for flexible circuit board - Google Patents

Abstract

The present disclosure provides a locking fixture and a positioning and mounting device for a flexible printed circuit board, and relates to the field of flexible printed circuit boards. A locking fixture for mounting a flexible circuit board to a computer system, comprising: the positioning members and the pressing pieces are arranged on one surface of the system circuit board in pairs at intervals, and the top of each positioning member is provided with an inclined plane; the pressing piece comprises a pressing plane positioned on the bottom surface and elastic arms positioned on two sides, wherein each elastic arm is configured to slide downwards from the inclined surface to the side part of the positioning member along a first direction, so that the pressing piece is clamped between the two positioning members along a second direction, and a downward pressure towards the system circuit board is formed on the pressing plane. The elastic arm can be retracted and slid downwards through the inclined surface guide, and effective fixation is realized after positioning.

Description

Locking fixture and positioning and mounting device for flexible circuit board

Technical Field

The disclosure relates to the field of flexible printed circuit boards, and in particular relates to a locking fixture and a positioning and mounting device for a flexible printed circuit board.

Background

The board-to-board connector (BTB connector) has the characteristics of small size and vertical assembly, and is mainly used for signal transmission of a flexible circuit board (FPC, flexible Printed Circuit) which is mainly embodied in the aspects of miniaturization and automatic assembly of a main board aiming at the trend of notebook computer design, and is conventionally designed as a BTB FPC cable and applied to various electronic products. However, the existing BTB FPC cable lacks an appearance positioning function, and the male connectors are all located in areas of the bottom of the flexible circuit board which cannot be visually seen by naked eyes from top to bottom, so that whether the connector is assembled in place or not can be confirmed only by a blind group or an operator, the reliability is low, and risks of damage and functional failure of the connector are easily caused. In addition, because the BTB connector is small in size and weak in clamping function, the connector is easy to loosen due to the fact that the machine is moved, rocked and the like after assembly, normal use of the function cannot be guaranteed, and the BTB connector becomes a major concern after product manufacturing and selling.

Disclosure of Invention

The present disclosure provides a locking fixture and a positioning and mounting device for a flexible circuit board, so as to at least solve the above technical problems in the prior art.

According to a first aspect of the present disclosure, there is provided a locking fixture for mounting a flexible circuit board to a computer system, comprising: the positioning members and the pressing pieces are arranged on one surface of the system circuit board in pairs at intervals, and the top of each positioning member is provided with an inclined plane; the pressing piece comprises a pressing plane positioned on the bottom surface and elastic arms positioned on two sides, wherein each elastic arm is configured to slide downwards from the inclined surface to the side part of the positioning member along a first direction, so that the pressing piece is clamped between the two positioning members along a second direction, and a downward pressure towards the system circuit board is formed on the pressing plane.

In an embodiment, at least a part of the side portion of each positioning member is provided with a recessed area, and an abutment plane is formed between the recessed area and the top of the positioning member, so as to limit the pressing piece from being separated from the positioning member along the first direction.

In one embodiment, the recessed area is configured as an annular gap along the outer wall of the positioning member, an annular boss is formed between the top of the positioning member and the annular gap, and the bottom surface of the annular boss forms the abutment plane.

In an embodiment, at least part of the bottom structure of the elastic arm is provided with a guide groove along the height direction of the elastic arm, and the guide groove is used for sliding in a matched manner with the inclined plane; the elastic arm is characterized in that at least part of the structure at the top of the elastic arm is provided with a buckling groove along the height direction of the elastic arm, and the buckling groove is used for the annular boss to penetrate through at least part of the structure.

In one embodiment, a radial depth dimension of the annular gap relative to the outer edge of the abutment plane is greater than a thickness dimension of the spring arm.

In one embodiment, each elastic arm is configured to have elastic deformation relative to an outer edge of the annular boss, and the pressing member has a deformation fulcrum for elastic deformation of each elastic arm.

In an embodiment, each pressing piece further includes a blocking portion, where the blocking portion is located on a side of the elastic arm away from the deformation fulcrum, and the blocking portion is disposed obliquely toward a side close to the positioning member, so as to limit the elastic arm from being removed from the positioning member along the second direction.

In an embodiment, the pressing piece further includes a main supporting portion, the bottom of the main supporting portion is provided with the pressing plane, and the main supporting portion is integrally formed with each elastic arm at each deformation supporting point.

In one embodiment, the positioning member is configured as a positioning post.

According to a second aspect of the present disclosure, a positioning and mounting device for a flexible circuit board is provided, including the above locking fixture, and further including a flexible circuit board and a male connector disposed on a bottom surface of the flexible circuit board, wherein a top surface of the flexible circuit board is adhered to a bottom surface of a pressing plane, and the pressing plane correspondingly mounts the male connector of the flexible circuit board into a female connector of a system circuit board.

The utility model discloses a lock attaches frock and flexible circuit board location installation device adopts the bottom surface to have the structure that compresses tightly the plane both sides and has the elastic arm, the locating component that has the inclined plane through the elastic arm of both sides along the top slides downwards, and press from both sides and locate between the locating component of both sides, at this moment, it follows the elastic arm and moves to the position that is close to the system circuit board downwards to compress tightly the plane, consider the application scenario that locks attaches the frock, compress tightly the piece and can give the decurrent down force of the electronic component that lies in its below through compressing tightly the plane, and then install the electronic component location in the system circuit board preset position, the structure installation is simple and convenient as above, can also utilize the deformation characteristic of elastic arm itself to press from both sides and establish the installation, can directly correspond the preset position and compress tightly the installation, can also accelerate installation effectiveness when convenient operation, avoid appearing the reliability that the blind group leads to is low and cause the risk of connector damage and functional failure easily.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings, in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

FIG. 1 shows a schematic diagram of an installation structure of a locking tool according to an embodiment of the disclosure;

FIG. 2 illustrates an isometric structural schematic of a locating member in a lock attachment tool according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of an axial structure of a pressing member in a locking tool according to an embodiment of the disclosure;

FIG. 4 shows a schematic top view of a compression member in a lock attachment tool according to an embodiment of the present disclosure;

fig. 5 shows a schematic diagram of a mounting structure of a positioning and mounting device for a flexible circuit board according to an embodiment of the disclosure.

The reference numerals in the figures illustrate:

1-a positioning member; 2-a pressing member; 3-a flexible circuit board; 4-a system circuit board;

11-inclined plane; 12-abutment plane; 13-an annular gap; 21-a compaction plane; 22-elastic arm; 23-deformation pivot; 221-a guide groove; 222-snap grooves.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly described in conjunction with the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person skilled in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

With the widespread use of electronic devices, demands for desktop computers and notebook computers have increased year by year, and when electronic components of a circuit board are assembled, there are some cases where the electronic components are damaged.

For example, the electronic component includes a flexible circuit board (FPC, flexible Printed Circuit), and the conventional manner of mounting the flexible circuit board to the system circuit board mostly adopts a blind set, and it can be understood that the male connectors are all located in the area of the bottom of the flexible circuit board that cannot be visually seen by naked eyes from top to bottom, so that the assembly can be confirmed by only relying on the blind set and the operator to feel, and the assembly manner has low reliability and easily causes the risk of damaging the connectors and losing functions. Because of the signal transmission characteristics of the flexible circuit board and the system circuit board, signal connection is needed between the flexible circuit board and the system circuit board by means of the connector, most of the conventional application is board-to-board connectors, and because the board-to-board connectors are small in size and weak in clamping function, the connectors are easy to loosen due to the fact that the machine is moved and rocked after assembly, and normal use of functions cannot be guaranteed.

In order to alleviate the above-mentioned problem, embodiments of the present disclosure provide a locking fixture and a positioning and mounting device for a flexible circuit board, which adopt a simple structure to mount the flexible circuit board to a preset position in an alignment manner, and the specific reference scheme is as follows.

Referring to fig. 1, an embodiment of the present disclosure provides a locking fixture including a positioning member 1 and a pressing member 2. Wherein, the positioning members 1 are arranged on one surface of the system circuit board 4 at intervals in pairs, and the top of each positioning member 1 is provided with an inclined plane 11. In addition, the pressing piece 2 includes a pressing plane 21 located at the bottom surface and elastic arms 22 located at both sides, each elastic arm 22 being configured to slide down from the inclined surface 11 to the side of the positioning member 1 in the first direction so that the pressing piece 2 is sandwiched between the two positioning members 1 in the second direction, and a pressing force toward the system circuit board 4 is formed at the pressing plane 21.

The elastic arm 22 in the embodiment of the present disclosure may be understood as an elastic member having a property of being deformable and capable of being restored to an original state by an external force.

The pressing plane 21 in the embodiment of the present disclosure may be understood as a single plane structure, and may also be understood as a structure having the pressing plane 21, and the embodiment of the present disclosure will be described with reference to the specific structure of the locking tool by way of example.

For example, the contact surface 21 and the spring arm 22 can be connected directly or indirectly.

Illustratively, the compression plane 21 may be connected to the spring arm 22 by a transition structure, and with further reference to fig. 1, the transition structure may be a riser located at an edge of one side of the compression plane 21, or the riser may be a block or other structural member having connection properties.

Illustratively, the compression plane 21 and the spring arm 22 may be integrally formed.

Illustratively, the spring arm 22 may be configured as any one of a sheet-like structure or a plate-like structure or a wire-like structure or a shaft-like structure.

Illustratively, the spring arms 22 may be constructed of a metallic structure.

Illustratively, the spring arms 22 may be constructed as sheet metal structures.

Depending on the level of the board-to-board connector arrangement on the system circuit board 4, the compression plane 21 may be located at a position above the bottom surface of the spring arm 22, or the compression plane 21 may be located at a position below the bottom surface of the spring arm 22, depending on the mounting position of the board-to-board connector. The embodiment of the disclosure is illustrated with the pressing plane 21 located at a position above the bottom surface of the elastic arm 22, wherein an installation space for accommodating the male connector and the female connector is formed between the pressing plane 21 and the system circuit board 4.

The structure that the bottom surface has the elastic arm 22 that compresses tightly plane 21 both sides has is adopted, the elastic arm 22 through both sides has the locating component 1 of inclined plane 11 along the top to slide downwards, and press from both sides between locating component 1, at this moment, compress tightly plane 21 and follow elastic arm 22 and move down to the position that is close to system circuit board 4, consider the application scenario of lock attach fixture, compress tightly piece 2 and can give the electronic component decurrent downforce that is located its below through compressing tightly plane 21, and then install electronic component location in system circuit board 4 preset position, the structure simple and convenient adoption above, can also utilize the deformation characteristic of elastic arm 22 itself to press from both sides and establish the installation, can directly correspond preset position and compress tightly the installation, can also accelerate installation effectiveness when convenient operation, avoid appearing the reliability that blind group leads to low and the risk that causes connector damage and functional failure easily.

Illustratively, the inclined surface 11 at the top of the positioning member 1 may be a swivel inclined surface 11 that is offset downward from the center to the periphery, or may be a single inclined surface 11 that is offset downward from side to side. The embodiment of the present disclosure will be described with reference to the rotary inclined plane 11 as an example.

When the elastic arm 22 slides to the side of the positioning member 1, in order to avoid the shake of the elastic arm 22, the locking fixture of the embodiment of the disclosure opens a recessed area on the side of the positioning member 1, and forms the abutment plane 12 for preventing the elastic arm 22 from moving upwards. A specific scheme is described with reference to fig. 2.

In some embodiments, at least a portion of the side of each positioning member 1 is provided with a recessed area, and an abutment plane 12 is formed between the recessed area and the top of the positioning member 1, so as to limit the pressing piece 2 from falling out of the positioning member 1 along the first direction. The first direction may be a thickness direction of the system circuit board 4.

Specifically, the recessed area formed on the side portion of the positioning member 1 cuts the positioning member 1 into a head structure located above and a bottom structure located below, wherein the head structure forms a first boss structure, the bottom surface of the first boss structure is an abutting plane 12, and when the elastic arm 22 slides to the recessed area on the side portion of the positioning member 1, the abutting plane 12 is located above at least a part of the structure of the elastic arm 22, so that the pressing piece 2 can be limited to be separated from the upper portion of the positioning member 1 in the first direction. In addition, the bottom structure of the positioning member 1 forms a second boss structure, the top surface of the second boss structure is an abutment plane 12, and when the elastic arm 22 slides to the side concave area of the positioning member 1, the abutment plane 12 is located under at least part of the structure of the elastic arm 22, so that the pressing piece 2 can be restricted from falling out under the positioning member 1 in the first direction.

Illustratively, the recessed area may be configured as an annular gap 13 along the outer wall of the positioning member 1, an annular boss is formed between the top of the positioning member 1 and the annular gap 13, and the bottom surface of the annular boss forms the abutment plane 12. In this way, the positioning member 1 having the revolving structure function can be obtained, and the positioning member 1 can be easily mounted, and it is not necessary to mount only a part of the abutment plane 12 to the elastic arm 22.

In practical application, in order to improve the sliding efficiency of the pressing member 2 relative to the elastic arm 22, the embodiment of the disclosure sets the elastic arm 22 in a corresponding structure, and is specifically described with reference to fig. 3 and 4.

In some embodiments, at least part of the bottom structure of the elastic arm 22 is provided with a guiding groove 221 along the height direction thereof, and the guiding groove 221 is used for sliding in cooperation with the inclined plane 11; at least part of the top structure of the elastic arm 22 is provided with a buckling groove 222 along the height direction, and the buckling groove 222 is used for the at least part of the annular boss to penetrate through.

Illustratively, the width dimension of the guide groove 221 may be adapted to the widest radial dimension of the top of the positioning member 1.

Illustratively, the width dimension of the snap groove 222 may be adapted to the widest radial dimension of the top of the positioning member 1.

The depth dimensions of the guide groove 221 and the fastening groove 222 are not limited in the embodiments of the present disclosure, as long as the structure that is not in contact with the guide groove is not interfered with.

The shape of the guide groove 221 and the fastening groove 222 is not limited in the embodiment of the present disclosure, and may be a regular shape or an irregular shape.

Illustratively, the edges of the guiding grooves 221 and the fastening grooves 222 are smoothed to avoid scratches when sliding with the positioning member 1.

Specifically, the radial depth dimension of the annular gap 13 relative to the outer edge of the abutment surface 12 is greater than the thickness dimension of the spring arm 22. To ensure that the arm 22 can be placed in the area covered by the abutment surface 12 when the initial state is restored, to further limit the escape of the arm 22 from the positioning member 1 in the first direction.

Specifically, with further reference to fig. 3 and 4, each elastic arm 22 is configured to have elastic deformation against the outer edge of the annular boss, and the pressing member 2 has a deformation fulcrum 23 for elastic deformation of each elastic arm 22.

Such an arrangement ensures that the spring arm 22 does not break during slippage.

The structural form of the deformation supporting point 23 is not limited in the embodiment of the present disclosure, and may be one or more connection points, a connection line formed by a plurality of connection points, or a connection surface formed by a plurality of connection lines, where the connection surface may be a plane or a curved surface with smooth transition.

With further reference to fig. 3 and 4, each pressing piece 2 further includes a blocking portion, which is disposed at a side of the elastic arm 22 away from the deformation fulcrum 23, and is inclined toward a side near the positioning member 1, for limiting the elastic arm 22 from coming out of the positioning member 1 in the second direction.

The second direction of the embodiment of the present disclosure may be a length direction or a width direction of the system circuit board 4, specifically, the mounting positions of the positioning member 1 and the pressing member 2 are determined.

Illustratively, the blocking portion may be configured to deflect adjacent to the side locating element 1.

Illustratively, the blocking portion may be an integrally formed structure with the spring arm 22.

Illustratively, the blocking portion may be a structure that is mechanically coupled to the spring arm 22, where the mechanical coupling therebetween may be understood as a relatively fixed coupling.

The blocking portion may have the same structure as the elastic arm 22, and will not be described herein.

Specifically, the pressing piece 2 further includes a main supporting portion, a pressing plane 21 is disposed at the bottom of the main supporting portion, and the main supporting portion is integrally formed with each elastic arm 22 at each deformation supporting point 23. The main support part can promote the stability of whole lock attaches frock.

The main support is understood here as the aforementioned transition structure.

The structural form of the main support portion is not limited in the embodiments of the present disclosure, and may be the same as that of the elastic arm 22, and will not be described here.

By way of example, the positioning member 1 of the embodiments of the present disclosure may be configured as a positioning post.

The adoption of the rotary body structure of the column body can facilitate mechanical processing and forming.

Considering the practical application scenario of the locking fixture, the embodiment of the disclosure further provides a positioning and mounting device for a flexible circuit board 3, referring to fig. 5, a schematic diagram of a mounting structure of the positioning and mounting device for the flexible circuit board 3 is provided, and the positioning and mounting device for the flexible circuit board 3 provided in the embodiment of the disclosure includes the locking fixture as above, and further includes the flexible circuit board 3 and a male connector disposed on a bottom surface of the flexible circuit board 3, wherein a top surface of the flexible circuit board 3 is adhered to a bottom surface of a pressing plane 21, and the pressing plane 21 correspondingly mounts the male connector of the flexible circuit board 3 into the female connector of the system circuit board 4. All effects of the locking tool can be achieved.

Before the locking frock compresses tightly the process, bond public first connector in flexible circuit board 3 bottom surface preset position, corresponding, system circuit board 4 relevant position is provided with female first connector, adopts flexible circuit board 3 location installation device of this disclosed embodiment, can realize the corresponding installation of public first connector and female first connector at compressing tightly piece 2 relative positioning member 1 downwardly sliding in-process, simultaneously under compressing tightly plane 21 effect and butt plane 12 combined action, realize the decurrent continuous compressive force to public first connector, can avoid rocking of connector.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel or sequentially or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (10)

1. A lock attaches frock for install flexible circuit board to computer system, its characterized in that, lock attaches frock includes:

the positioning members are arranged on one surface of the system circuit board at intervals in pairs, and the top of each positioning member is provided with an inclined plane;

the pressing piece comprises a pressing plane positioned on the bottom surface and elastic arms positioned on two sides, wherein each elastic arm is configured to slide downwards from the inclined surface to the side part of the positioning member along a first direction, so that the pressing piece is clamped between the two positioning members along a second direction, and a downward pressure towards the system circuit board is formed on the pressing plane.

2. The attachment fixture of claim 1, wherein each of the positioning member side portions is at least partially structured with a recessed area, the recessed area and the positioning member top portion forming an abutment plane therebetween for limiting removal of the hold-down element from the positioning member in the first direction.

3. The attachment fixture of claim 2, wherein the recessed region is configured as an annular gap along the outer wall of the locating member, an annular boss is formed between the locating member top and the annular gap, and the annular boss bottom surface forms the abutment plane.

4. The locking fixture of claim 3, wherein at least part of the bottom structure of the elastic arm is provided with a guide groove along the height direction thereof, and the guide groove is used for sliding in a matched manner with the inclined plane; the elastic arm is characterized in that at least part of the structure at the top of the elastic arm is provided with a buckling groove along the height direction of the elastic arm, and the buckling groove is used for the annular boss to penetrate through at least part of the structure.

5. A locking fixture as recited in claim 3, wherein a radial depth dimension of the annular gap relative to the abutment plane outer edge is greater than the spring arm thickness dimension.

6. The attachment fixture of claim 1, wherein each of the spring arms is configured to have an elastic deformation relative to an outer edge of the annular boss, and the hold-down member has a deformation fulcrum for the elastic deformation of each of the spring arms.

7. The attachment fixture of claim 6, wherein each of the pressing members further comprises a blocking portion on a side of the spring arm away from the deformation fulcrum, the blocking portion being disposed obliquely toward a side closer to the positioning member for limiting the spring arm from being pulled out of the positioning member in the second direction.

8. The tool according to claim 6, wherein the pressing member further comprises a main supporting portion, the pressing plane is disposed at the bottom of the main supporting portion, and the main supporting portion is integrally formed with each elastic arm at each deformation supporting point.

9. The attachment tool of claim 1, wherein the locating member is configured as a locating post.

10. A positioning and mounting device for a flexible circuit board, comprising the locking tool as claimed in any one of claims 1-9, and further comprising a flexible circuit board and a male connector arranged on the bottom surface of the flexible circuit board, wherein the top surface of the flexible circuit board is adhered to the bottom surface of the pressing plane, and the pressing plane correspondingly mounts the male connector of the flexible circuit board into the female connector of the system circuit board.