CN211047644U

CN211047644U - Mounting structure for frame and FPC clearance

Info

Publication number: CN211047644U
Application number: CN201922325553.5U
Authority: CN
Inventors: 汪海涛; 郭文标; 王俊杰; 许威; 赵春晓
Original assignee: Zhejiang Xinli Photoelectric Technology Co ltd
Current assignee: Zhejiang Xinli Photoelectric Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-07-17
Anticipated expiration: 2029-12-23

Abstract

The utility model provides a frame and FPC empty mounting structure that keeps away, it has solved the easy fish tail scheduling problem of display screen department of buckling FPC board, it is including installing the main part, the installation main part includes the frame, lower frame and FPC board, the lower frame is the rectangle and installs in the lower frame outside last frame laminating, the FPC board laminating is installed at the installation main part back, the long side middle part of one side of last frame and lower frame is equipped with the mechanism of buckling, the mechanism of buckling is including opening the breach of buckling at the long side middle part of lower frame, the link joint of FPC board is in the breach department of buckling, the long side middle part of last frame is equipped with outer convex part, outer convex part sets up and is greater than the breach of buckling in the breach outside of buckling and width, the long limit of outer convex part leaves 1.5mm-1.7 mm's the clearance of buckling with FPC board's. The utility model has the advantages of low failure rate, stable structure and the like.

Description

Mounting structure for frame and FPC clearance

Technical Field

The utility model belongs to the technical field of circuit board mounting structure, concretely relates to frame and empty mounting structure of FPC keep away.

Background

With the development of the electronic industry and information technology, flexible circuit boards are widely used in products such as mobile phones, digital-analog cameras, vehicle-mounted displays and the like. The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance. The high-density light-weight LED lamp has the characteristics of high wiring density, light weight, thin thickness and good bending property. By embedding the circuit design on a bendable light and thin plastic sheet, a large number of precision components are stacked and embedded in a narrow and limited space, thereby forming a bendable flexible circuit. In practical applications, an FPC is often used at a bending mechanism of a display screen.

As shown in fig. 1 to 3, in a conventional design, after extending out of a product display module, a gap L of only 0.1mm is often formed between a flexible circuit board K and a frame of the display module M, and a matching tolerance of an upper frame and a lower frame is generally about 0.05mm, so that when a product is used for a long time, an FPC is in too much contact with an upper frame N, the flexible circuit board K is slightly scratched, a product short circuit phenomenon may be caused, a risk exists, and a failure rate of the product is increased.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, frame and FPC that the fault rate is low keep away empty mounting structure.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the mounting structure comprises a mounting main body, wherein the mounting main body comprises an upper frame, a lower frame and an FPC board, the lower frame is rectangular, the upper frame is attached to the outer side of the lower frame, the FPC board is attached to the back of the mounting main body, a bending mechanism is arranged in the middle of the long side of one side of the upper frame and the lower frame, the bending mechanism comprises a bending notch formed in the middle of the long side of the lower frame, a connecting end of the FPC board is connected to the bending notch in a clamped mode, an outer convex portion is arranged in the middle of the long side of the upper frame, the outer convex portion is arranged on the outer side of the bending notch, the width of the outer convex portion is larger than the bending notch, and a bending gap of 1.5-1.7 mm is reserved between. Through the bending mechanism, a certain gap is reserved between the FPC board and the frame, so that the FPC board can be bent at will and cannot be touched, scratches of the frame and the FPC board are reduced, and the failure rate of products is reduced.

In the mounting structure of the frame and the FPC clearance, the outer convex part comprises a long plate parallel to the long side edge of the mounting main body and a side plate obliquely arranged with the long side edge, and the bending gap is arranged between the long plate and the lower frame. The long plate of the outer convex part is parallel to the long side of the mounting main body, which is beneficial to the arrangement and mounting of the FPC board.

In the mounting structure of the frame and the FPC clearance, the side of the short side of the upper frame is provided with a plurality of frame fixing ports, and the short side of the lower frame is clamped on the short side of the upper frame through the frame fixing ports. The relative position of frame and lower frame is guaranteed to the frame fixed orifices, avoids the FPC board that the dislocation leads to of each other to tear.

In the frame and FPC clearance-avoiding mounting structure, the long side and the short side of the lower frame are equal to the long side and the short side of the upper frame in width. The upper frame is arranged on the outer side of the lower frame and is equal to the lower frame in width, and the upper surface and the lower surface of the upper frame are kept flush after installation.

In the mounting structure for the frame and the FPC in clearance, one end of the FPC board, which is far away from the connecting end, extends towards the long side edge of the other side of the lower frame.

In the mounting structure for the frame and the FPC in clearance, the two sides of the FPC board are respectively provided with an extending part facing to the short side of the lower frame. The extension part increases the contact area of the FPC board and the installation main body, thereby increasing the fastening force of the FPC board and the installation main body and avoiding the FPC board from falling off.

In the frame and FPC clearance mounting structure, the light guide plate is fixed in the middle of the front face of the mounting main body, the mounting main body back is provided with a plurality of mounting seats and locking buckles which are symmetrical about the mounting main body center, and the short side edge of the mounting main body back is provided with the positioning strip.

In the frame and FPC clearance mounting structure, the mounting seat comprises two mounting sub-seats which are connected with each other, a mounting hole is formed in the center of each mounting sub-seat, and the locking buckle is parallel to the long sides of the upper frame and the lower frame. The mounting seat and the locking buckle ensure that the mounting main body can be stably mounted on corresponding equipment.

In the mounting structure for avoiding the gap between the frame and the FPC, the distance between the long side edge of the upper frame and the light guide plate is greater than the distance between the long side edge of the other side of the upper frame and the light guide plate. The width of one side of the installation main body close to the bending mechanism is larger, and the structural strength of the bending part is improved.

In the mounting structure of the frame and the FPC clearance, the binding surface of the upper frame and the lower frame is coated with heat-conducting silica gel. The heat of the display mechanism after long-time use can be dissipated through the frame.

Compared with the prior art, the utility model has the advantages of: the outer convex part is arranged in the middle of the long side of the upper frame, and the bending gap ensures that the FPC board is not in contact with the frame, so that scratches are reduced, and the failure rate of products is reduced; the extending parts are added on the two sides of the FPC board, so that the connecting strength of the FPC board and the mounting main body is improved; a plurality of mounting seats are additionally arranged on the back face of the mounting main body, and the mounting main body is convenient to fix on corresponding equipment.

Drawings

FIG. 1 is a schematic diagram of a conventional design;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 2;

fig. 4 is a schematic structural view of the back side of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

fig. 6 is a front schematic view of the present invention;

fig. 7 is a schematic structural view of the side of the present invention;

in the figure, the mounting body 1, the light guide plate 11, the mounting seat 12, the locking buckle 13, the positioning strip 14, the mounting sub-seat 15, the mounting hole 16, the upper frame 2, the frame fixing opening 21, the lower frame 3, the FPC board 4, the connecting end 41, the extending portion 42, the bending mechanism 5, the bending notch 51, the outer convex portion 6, the long board 61, the side board 62, the bending gap 7, and the heat conductive silicone 8.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 4-7, the mounting structure of the frame and the FPC clearance includes a mounting main body 1, the mounting main body 1 includes an upper frame 2, a lower frame 3 and an FPC board 4, the lower frame 3 is rectangular and the upper frame 2 is attached to the outer side of the lower frame 3, the FPC board 4 is attached to the back of the mounting main body 1, a bending mechanism 5 is disposed in the middle of the long side of one side of the upper frame 2 and the lower frame 3, the bending mechanism 5 includes a bending notch 51 formed in the middle of the long side of the lower frame 3, a connecting end 41 of the FPC board 4 is connected to the bending notch 51 in a clamping manner, an outer convex portion 6 is disposed in the middle of the long side of the upper frame 2, the outer convex portion 6 is disposed outside the bending notch 51 and has a width larger than the bending notch 51, and a bending gap 7 of 1.5mm to 1.7mm is left between the long side. During installation, the FPC board 4 is attached to the back of the installation main body 1, the connecting end 41 of the FPC board 4 penetrates through the bending notch 51 and the bending gap 7 is reserved between the connecting end and the upper frame 2, and the FPC board 4 is prevented from contacting the upper frame 2 when the installation main body 1 rotates.

Specifically, the outward protrusion 6 includes a long plate 61 parallel to the long side of the mounting body 1 and a side plate 62 disposed obliquely to the long side, and the bending gap 7 is provided between the long plate 61 and the lower frame 3. The bending gap 7 is 1.62mm, and enough space is left for bending the connecting end 41 of the FPC board 4.

Further, the side of the short side of the upper frame 2 is provided with a plurality of frame fixing ports 21, and the short side of the lower frame 3 is clamped on the short side of the upper frame 2 through the frame fixing ports 21. After the upper frame 2 and the lower frame 3 are attached to each other, a fixing pin or the like is inserted into the frame fixing opening 21, so that the relative position of the upper frame 2 and the lower frame 3 is kept unchanged.

In addition to this, the long and short sides of the lower frame 3 are equal in width to the long and short sides of the upper frame 2. After the upper frame 2 and the lower frame 3 are spliced, the upper end surface and the lower end surface of the installation main body 1 are flush with the upper end surface and the lower end surface of the upper frame 2 and the lower frame 3.

Deeply, one end of the FPC board 4 remote from the connection terminal 41 extends toward the other side long side edge of the lower frame 3. The center line of the FPC board 4 is parallel to the short side of the mounting body 1.

It is apparent that the FPC board 4 is provided at both sides thereof with extension portions 42, respectively, toward the short side of the lower frame 3. The extending portion 42 increases the area of the FPC board 4, thereby improving the adhesion force between the FPC board 4 and the mounting body 1, and preventing the FPC board 4 from being dislocated or falling off from the mounting body 1.

Visibly, a light guide plate 11 is fixed in the middle of the front surface of the installation main body 1, a plurality of installation seats 12 and locking buckles 13 which are symmetrical about the center of the installation main body 1 are arranged on the back surface of the installation main body 1, and positioning strips 14 are arranged at the edges of the short side edges of the back surface of the installation main body 1.

Meanwhile, the mounting seat 12 comprises two mounting sub-seats 15 connected with each other, a mounting hole 16 is formed in the center of each mounting sub-seat 15, and the locking buckle 13 is parallel to the long sides of the upper frame 2 and the lower frame 3. The mounting seat 12 and the locking buckle 13 are matched with each other, and when the mounting body 1 is mounted on corresponding equipment, the mounting seat 12 and the locking buckle 13 play roles in connection and positioning.

Preferably, the distance between the long side of the upper frame 2 and the light guide plate 11 is greater than the distance between the long side of the other side of the upper frame and the light guide plate 11. The width of one side of the installation main body 1 close to the bending mechanism 5 is larger, the structural strength is improved, and the connecting end 41 of the FPC board 4 is also protected.

Furthermore, the binding surfaces of the upper frame 2 and the lower frame 3 are coated with heat-conducting silica gel 8. During normal work, except that the thermovent plays the radiating effect, go up frame 2 and lower frame 3 and adopt the iron system to improve heat conduction rate for thermal giving off.

In summary, the principle of the present embodiment is: lower frame 3 and last frame 2 are installed in proper order in the outside of installation main part 1, and the link 41 of the FPC board 4 at the installation main part 1 back simultaneously passes the breach 51 of buckling of lower frame 3, leaves the clearance 7 of buckling between the outer convex part 6 of last frame 2 to guarantee that FPC board 4 does not direct contact with the frame when installation main part 1 rotates, thereby reduce FPC board 4 fish tail, improve product life.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the mounting main body 1, the light guide plate 11, the mounting seat 12, the locking buckle 13, the positioning strip 14, the mounting sub-seat 15, the mounting hole 16, the upper bezel 2, the bezel fixing opening 21, the lower bezel 3, the FPC board 4, the connecting end 41, the extending portion 42, the bending mechanism 5, the bending notch 51, the outer protrusion 6, the long board 61, the side board 62, the bending gap 7, and the heat conductive silicone rubber 8 are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A frame and FPC clearance mounting structure comprises a mounting main body (1), wherein the mounting main body (1) comprises an upper frame (2), a lower frame (3) and an FPC board (4), and is characterized in that the lower frame (3) is rectangular, the upper frame (2) is attached to the outer side of the lower frame (3), the FPC board (4) is attached to the back of the mounting main body (1), a bending mechanism (5) is arranged in the middle of the long side of one side of the upper frame (2) and the lower frame (3), the bending mechanism (5) comprises a bending notch (51) formed in the middle of the long side of the lower frame (3), a connecting end (41) of the FPC board (4) is clamped in the bending notch (51), an outer convex part (6) is arranged in the middle of the long side of the upper frame (2), the outer convex part (6) is arranged on the outer side of the bending notch (51) and is wider than the bending notch (51), and a bending gap (7) of 1.5-1.7 mm is reserved between the long edge of the outer convex part (6) and the connecting end (41) of the FPC board (4).

2. The frame and FPC clearance mounting structure of claim 1, wherein the outer convex portion (6) comprises a long plate (61) parallel to the long side of the mounting body (1) and a side plate (62) inclined from the long side, and the bending gap (7) is disposed between the long plate (61) and the lower frame (3).

3. The frame and FPC clearance mounting structure of claim 1, characterized in that, the side of the short side of the upper frame (2) is provided with a plurality of frame fixing ports (21), and the short side of the lower frame (3) is clamped on the short side of the upper frame (2) through the frame fixing ports (21).

4. A frame and FPC clearance mounting structure according to claim 3, characterized in that the long and short sides of the lower frame (3) and the long and short sides of the upper frame (2) have the same width.

5. A frame and FPC clearance mounting structure according to claim 1, 2, 3 or 4, characterized in that, one end of the FPC board (4) far away from the connecting end (41) extends towards the other long side edge of the lower frame (3).

6. A frame and FPC clearance mounting structure according to claim 5, characterized in that, extension portions (42) facing the short side of the lower frame (3) are respectively arranged on both sides of the FPC board (4).

7. The frame and FPC clearance mounting structure of claim 1, characterized in that, the middle of the front of the mounting body (1) is fixed with a light guide plate (11), the back of the mounting body (1) is provided with a plurality of mounting seats (12) and locking buckles (13) which are symmetrical about the center of the mounting body (1), and the short side edges of the back of the mounting body (1) are provided with positioning strips (14).

8. The frame and FPC clearance mounting structure of claim 7, characterized in that, the mounting base (12) includes two mounting sub-bases (15) connected with each other, a mounting hole (16) is opened in the center of the mounting sub-base (15), and the locking buckle (13) is parallel to the long sides of the upper frame (2) and the lower frame (3).

9. The frame and FPC clearance mounting structure of claim 7, wherein a distance between a long side of the upper frame (2) and the light guide plate (11) is greater than a distance between a long side of the other side of the upper frame and the light guide plate (11).

10. The mounting structure of the frame and the FPC in clearance of claim 1, characterized in that the binding surfaces of the upper frame (2) and the lower frame (3) are coated with heat-conducting silica gel (8).