CN111356285A

CN111356285A - Flexible circuit board and terminal

Info

Publication number: CN111356285A
Application number: CN202010320568.7A
Authority: CN
Inventors: 孙志永
Original assignee: Jiangsu Ha Ha She Information Technology Co Ltd
Current assignee: Jiangsu Ha Ha She Information Technology Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-06-30

Abstract

The invention belongs to the technical field of electronic equipment, and particularly relates to a flexible circuit board and a terminal, wherein the flexible circuit board comprises a body; the body comprises a bearing area and a deformation area; a reinforcing plate is arranged at the back of the bearing area, and a buffer structure is arranged at the outer edge where the reinforcing plate is connected with the deformation area; the terminal is suitable for the flexible circuit board and comprises a module shell, wherein the module shell comprises an elastic pressing plate, and the two symmetrical pressing plates are connected through a connecting plate; according to the invention, the buffer structure is arranged at the end part of the reinforcing plate, so that the cracking and the damage of the flexible circuit board body at the edge of the reinforcing plate caused by stress concentration are reduced, the working quality of the flexible circuit board is greatly improved, and the service life of the flexible circuit board is greatly prolonged; simultaneously, the deformation area two sides are fixed in the mounting area through the arranged module shell in a pressing mode, so that the assembling difficulty of the terminal is reduced, and the stability of the flexible circuit board terminal in working can be effectively improved.

Description

Flexible circuit board and terminal

Technical Field

The invention belongs to the technical field of electronic equipment, and particularly relates to a flexible circuit board and a terminal.

Background

The circuit board is an important component of the terminal equipment, and the integrated arrangement of various components is realized through the circuit board so as to meet the design requirements of small and exquisite and light terminal equipment; flexible Printed Circuit (FPC) is more and more widely used in the field of electrical connection because it can be bent. In practical application, some areas of the FPC need to be reinforced, so that the areas have certain strength and can bear components. For example, the region of the FPC having the connector needs to be provided with a stiffener to carry the connector; for another example, the circuit board of the camera module needs to carry components such as a photosensitive chip and a lens, and the circuit board usually includes an FPC and a stiffener disposed on the back of the FPC.

When the flexible circuit board is used in cooperation with the reinforcing plate, the hardness of the reinforcing plate is usually much higher than that of the flexible circuit board, and when the flexible circuit board at the edge of the reinforcing plate is subsequently bent, the flexible circuit board in the area is easy to break due to stress concentration, so that the electric connection performance and the normal use of the flexible circuit board are influenced.

Some technical solutions related to a flexible circuit board have appeared in the prior art, such as a chinese patent, patent No. 2018110008101, which discloses a flexible circuit board, including: the flexible circuit board comprises a flexible circuit board body, a bearing area and a bending area, wherein the bearing area and the bending area are connected; the reinforcing plate is arranged on the back surface of the flexible circuit board body and is positioned in the bearing area; the stress buffer piece is arranged on the back of the flexible circuit board body and is adjacent to the edge, close to the bending area, of the reinforcing plate so as to buffer stress concentration generated when the edge, close to the reinforcing plate, of the bending area is bent. In above-mentioned flexible circuit board, the stress concentration that produces when stress buffering spare can effectively cushion buckles, also effectively reduces when buckling, the stress of the flexible circuit board body department of the edge of stiffening plate to effectively avoid the flexible circuit board body of the edge of stiffening plate to break.

However, the scheme still has the problems of infirm fixation of the buffer piece and the reinforcing plate and poor buffer effect; in view of the above, the invention provides a flexible circuit board and a terminal, by arranging the buffer structure at the end part of the reinforcing plate, the stress generated by the bent body at the end part of the reinforcing plate is effectively buffered, and the cracking and damage of the flexible circuit board body at the edge of the reinforcing plate due to stress concentration are reduced, so that the working quality and the service life of the flexible circuit board are greatly improved; simultaneously, the deformation area two sides are fixed in the mounting area through the arranged module shell in a pressing mode, so that the assembling difficulty of the terminal is reduced, and the stability of the flexible circuit board terminal in working can be effectively improved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the flexible circuit board and the terminal, the end part of the reinforcing plate is provided with the buffer structure, so that the stress generated by the bent body at the end part of the reinforcing plate is effectively buffered, the breakage and the damage of the flexible circuit board body at the edge of the reinforcing plate caused by stress concentration are reduced, and the working quality and the service life of the flexible circuit board are greatly improved; simultaneously, the deformation area two sides are fixed in the mounting area through the arranged module shell in a pressing mode, so that the assembling difficulty of the terminal is reduced, and the stability of the flexible circuit board terminal in working can be effectively improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a flexible circuit board, which comprises a body; the body comprises a bearing area positioned in the middle and deformation areas positioned at two ends of the bearing area, wherein the end part of the deformation area at one side of the bearing area is connected with a golden finger, and the end part of the deformation area at the other side of the bearing area is connected with a connecting piece; the back of the bearing area is provided with a reinforcing plate made of stainless steel, the outer edge of the joint of the reinforcing plate and the deformation area is provided with a buffer structure, the buffer structure comprises an elastic buffer block made of rubber materials, the side of the buffer block close to the reinforcing plate is provided with a slot, the end part of the reinforcing plate is inserted into the slot and is tightly matched with the slot, the side of the slot corresponding to the width direction of the reinforcing plate is provided with a communicated first locking groove, the side of the reinforcing plate corresponding to the first locking groove is provided with a through second locking groove, the side of the buffer block attached to the body is provided with a buffer groove with a circular cross section, an elastic buffer column matched with the buffer groove is arranged in the buffer groove, one side of the buffer column close to the first locking groove is provided with a locking strip, and the locking strip can be inserted into the first locking groove, the buffer column is provided with an elastic fixing strip on the side corresponding to the extension direction of the deformation zone, the side corresponding to the inner end of the end part of the fixing strip is connected with a group of fixing needles which are uniformly distributed, the radius of each fixing needle is gradually reduced from inside to outside, the side corresponding to the buffer block and the locking strip and the fixing needles are respectively provided with a first fixing groove and a second fixing groove which are matched with the buffer block and the locking strip, and the fixing needles can be respectively inserted into the first fixing groove and the second fixing groove and are tightly matched with the fixing grooves; when the flexible circuit board is used in cooperation with the reinforcing plate, the hardness of the reinforcing plate is usually far greater than that of the flexible circuit board, and when the flexible circuit board at the edge of the reinforcing plate is subsequently bent, the flexible circuit board in the area is easy to break due to stress concentration, so that the electric connection performance and the normal use of the flexible circuit board are influenced; in the production process of the flexible circuit board, firstly, inserting the slot on the buffer block into the end part of the reinforcing plate and enabling the buffer block to be installed at the outer edge of the reinforcing plate, wherein the first locking groove can be aligned and communicated with the second locking groove, then, inserting the locking strip on the buffer column into the two communicated locking grooves and enabling the second fixing groove at the end part of the locking strip to be aligned and communicated with the first fixing groove, and meanwhile, the locking strip positioned in the two fixing grooves can stably fix the buffer block at the end part of the reinforcing plate and meanwhile, the buffer column can be positioned in the buffer groove; then, stretching the end part of the fixing strip at one side of the buffer column, and inserting the fixing needles at the end part into the first fixing groove and the second fixing groove, wherein the fixing needles can stably fix the buffer column at the end part of the locking strip on the buffer block; set up this moment and can carry out gentle transition with the body direct contact laminating of one side at the elastic buffer post of stiffening plate tip, also can make the produced stress of body when buckling of this region department simultaneously can the dispersion on the buffer post of arcwall face to effectual produced stress of body to the stiffening plate tip is buckled buffers, reduces the flexible circuit board body of stiffening plate edge and because of stress concentration the fracture and the damage that produce, thereby flexible circuit board's operating mass with life has been improved greatly.

Preferably, the side surfaces of the fixing strips corresponding to the outer sides of the fixing needles are provided with annular bonding rings, the side walls of the buffer blocks corresponding to the bonding rings are provided with bonding grooves matched with the bonding rings, and bonding agents are arranged in the bonding grooves; during operation, because foretell fixed needle breaks away from fixed slot and No. two fixed slot insides easily under the interference of external force, at this moment through setting up adhesive ring and the bonding groove of mutually supporting, between fixed needle and two fixed slot are installed, at first at the inside adhesive that fills of bonding groove, at fixed needle and two fixed slot complex in-process afterwards, the adhesive ring of fixed needle one side can be extruded and is advanced bonding inslot portion and extrude its inside adhesive and distribute in the regional department that fixed strip and buffer block laminated each other, thereby make by the inside remaining adhesive of extruded adhesive and bonding groove can fix the fixed strip bonding on the buffer block, reduce fixed strip and buffer block cooperation failure under the interference of external force, the effectual stability of improving flexible circuit board at the during operation.

Preferably, the positioning plates are arranged on the side surfaces of the buffer blocks corresponding to the two ends of the buffer slot, and the distance between the two positioning plates is the same as the length of the buffer column; the buffer column and the buffer groove are arranged in an interference manner; the during operation, because foretell fixed needle need carry out prepositioning with the in-process that two fixed slots mutually supported, thereby the installation degree of difficulty of buffer block and stiffening plate has been increased, this moment through all being provided with the locating plate on the buffer block side that corresponds at the buffer slot both ends, when making the locating plate of buffer block both ends and both sides contact respectively and align, fixed needle on the fixed strip can align with two fixed slots this moment, thereby make things convenient for the direct mount of fixed needle and two fixed slots, simultaneously through with buffer column and buffer slot interference installation, make the buffer column can be more stable firm fix inside the buffer slot, thereby further increased the stability of flexible circuit board at the during operation.

Preferably, an inclined transition strip is arranged on the outer edge of the side face of one end, far away from the fixing strip, of the buffer block, and the bottom face of the transition strip is in contact fit with the side face of the reinforcing plate; the during operation, because there is the edges and corners near the buffer block of buffer column, and there is the difference in height between the buffer block side of this edges and corners and the stiffening plate side, thereby make the body that this region corresponds produce stress concentration's problem easily when passing through, this moment through the transition strip that sets up the slope, make the transition strip can carry out mild transition with the region between buffer block side and the stiffening plate side, the side of stiffening plate can support and effect the bottom surface of transition strip simultaneously, thereby make the work that the transition strip can be more stable, thereby further reduce the damage that the flexible circuit board body produced because of stress concentration.

Preferably, two groups of cutting grooves are symmetrically arranged on the side wall of the deformation area, and the cutting grooves are shaped like a semicircle and are uniformly distributed along the extension direction of the side wall of the deformation area; during operation, in order to improve the bending performance of the deformation area, the semicircular cutting grooves are formed in the side face of the deformation area, so that the tension applied to the side face of the deformation area during bending deformation can be effectively reduced, the flexible circuit board is more prone to side face bending deformation, the bending performance of the flexible circuit board is optimized, and the working quality of the flexible circuit board is further improved.

A flexible circuit board terminal is suitable for the flexible circuit board and comprises a module shell, wherein the module shell comprises elastic pressing plates which are symmetrically distributed at the outer edge of the side wall of a deformation area, the shapes of the pressing plates are the same as the outer edge of the side wall of the deformation area, the two symmetrical pressing plates are connected through a connecting plate, and the top end of the middle part of the connecting plate is provided with a connecting rod; during operation, for the stability when reducing the installation zone of flexible circuit board and installation, can carry out the clamp plate of adaptability pressfitting to the deformation zone through setting up on the module casing this moment for the deformation zone both sides closely laminate under the effect of clamp plate and fix in installation zone department, not only reduced the dimensional requirement to the installation zone space and the equipment degree of difficulty at terminal, can also make the flexible circuit board after the installation carry out stable fixed and work, thereby improved the stability of flexible circuit board terminal at the during operation greatly.

Preferably, the connecting rod comprises a fixed rod and an adjusting rod, the bottom end of the fixed rod is fixedly connected with the connecting plate, a chute is arranged at the top end of the fixed rod, the adjusting rod is positioned in the chute and can freely slide in the chute, and a spring is connected between the bottom end of the adjusting rod and the bottom surface of the chute; during operation, when the installation region that corresponds as the deformation zone appears the arch of unevenness, highly fixed clamp plate produced great pressure to the deformation zone easily and made it destroy this moment, through setting the connecting rod to the form that can adjust according to the installation region this moment, the deformation zone that falls on the protruding department of installation region this moment can exert pressure to the dead lever on clamp plate top, make dead lever atress and regulation pole take place relative motion and compress the inside spring of spout, thereby make the clamp plate reduce the deformation zone damage that leads to because of too big extrusion force between the two when can carry out the pressfitting to the deformation zone smoothly, thereby further improved the stability of flexible circuit board terminal at the during operation.

The invention has the technical effects and advantages that:

1. according to the flexible circuit board and the terminal provided by the invention, the buffer structure is arranged at the end part of the reinforcing plate, so that the stress generated by the bent body at the end part of the reinforcing plate is effectively buffered, and the breakage and damage of the flexible circuit board body at the edge of the reinforcing plate caused by stress concentration are reduced, thereby greatly improving the working quality and prolonging the service life of the flexible circuit board.

2. According to the flexible circuit board and the terminal provided by the invention, the pressing plate capable of adaptively pressing the deformation area is arranged on the module shell, so that two sides of the deformation area are tightly attached and fixed at the mounting area under the action of the pressing plate, the size requirement on the mounting area space and the assembly difficulty of the terminal are reduced, the mounted flexible circuit board can be stably fixed and operated, and the stability of the flexible circuit board terminal in working is greatly improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

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

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C in FIG. 3;

in the figure: the structure comprises a body 1, a bearing area 11, a deformation area 12, a golden finger 13, a connecting piece 14, a reinforcing plate 15, a buffer structure 2, a buffer block 21, a slot 22, a first locking groove 23, a second locking groove 24, a buffer groove 25, a positioning plate 26, a transition strip 27, a cutting groove 28, a buffer column 3, a locking strip 31, a fixing strip 32, a fixing needle 33, a first fixing groove 34, a second fixing groove 35, an adhesive ring 36, an adhesive groove 37, a module shell 4, a pressing plate 41, a connecting plate 42, a connecting rod 43, a fixing rod 44, an adjusting rod 45, a sliding groove 46 and a spring 47.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, a flexible circuit board according to the present invention includes a body 1; the body 1 comprises a bearing area 11 positioned in the middle and deformation areas 12 positioned at two ends of the bearing area 11, wherein the end part of the deformation area 12 at one side of the bearing area 11 is connected with a golden finger 13, and the end part of the deformation area 12 at the other side of the bearing area 11 is connected with a connecting piece 14; the back of the bearing area 11 is provided with a reinforcing plate 15 made of stainless steel, the outer edge of the joint of the reinforcing plate 15 and the deformation area 12 is provided with a buffer structure 2, the buffer structure 2 comprises an elastic buffer block 21 made of rubber materials, the side of the buffer block 21 close to the reinforcing plate 15 is provided with a slot 22, the end part of the reinforcing plate 15 is inserted into the slot 22 and is tightly matched with the slot 22, the slot 22 is provided with a communicated first locking groove 23 along the side corresponding to the width direction of the reinforcing plate 15, the side of the reinforcing plate 15 corresponding to the first locking groove 23 is provided with a through second locking groove 24, the side of the buffer block 21 attached to the body 1 is provided with a buffer groove 25 with a circular cross section, the inside of the buffer groove 25 is provided with a matched elastic buffer column 3, one side of the buffer column 3 close to the first locking groove 23 is provided with a locking strip 31, the locking strip 31 can be inserted into the first locking groove 23 in a penetrating manner, the side face of the buffer column 3 corresponding to the extension direction of the deformation region 12 is provided with an elastic fixing strip 32, the side face corresponding to the inner end of the end part of the fixing strip 32 is connected with a group of fixing needles 33 which are uniformly distributed, the radius of the fixing needles 33 is gradually reduced from inside to outside, the side faces corresponding to the buffer block 21, the locking strip 31 and the fixing needles 33 are respectively provided with a first fixing groove 34 and a second fixing groove 35 which are matched with the fixing needles, and the fixing needles 33 can be respectively inserted into the first fixing groove 34 and the second fixing groove 35 and are tightly matched with the fixing grooves; when the flexible circuit board is used in cooperation with the reinforcing plate 15, the hardness of the reinforcing plate 15 is usually much higher than that of the flexible circuit board, and when the flexible circuit board at the edge of the reinforcing plate 15 is subsequently bent, the flexible circuit board in the area is easy to break due to stress concentration, so that the electric connection performance and normal use of the flexible circuit board are influenced; in the production process of the flexible circuit board, firstly, the slot 22 on the buffer block 21 is inserted into the end part of the reinforcing plate 15, and the buffer block 21 is installed at the outer edge of the reinforcing plate 15, at the moment, the first locking groove 23 can be aligned and communicated with the second locking groove 24, then, the locking strip 31 on the buffer column 3 is inserted into the two communicated locking grooves, the second fixing groove 35 at the end part of the locking strip is aligned and communicated with the first fixing groove 34, at the moment, the locking strip 31 in the two fixing grooves can stably fix the buffer block 21 at the end part of the reinforcing plate 15, and meanwhile, the buffer column 3 can be positioned in the buffer groove 25; then, the end part of the fixing strip 32 at one side of the buffer column 3 is stretched, and the fixing needle 33 at the end part is inserted into the first fixing groove 34 and the second fixing groove 35, so that the buffer column 3 at the end part of the locking strip 31 can be stably fixed on the buffer block 21 by the fixing needle 33; set up this moment and can carry out gentle transition with the 1 direct contact laminating of body of one side and make at the elastic buffer post 3 of 15 tip of stiffening plate, also can make the produced stress of body 1 when buckling of this region department can the dispersion effect on the buffer post 3 of arcwall face simultaneously, thereby effectual 1 produced stress of body of buckling 15 tip of stiffening plate cushions, reduce the fracture and the damage that flexible circuit board body 1 at 15 edges of stiffening plate produced because of stress concentration, thereby the operating quality and the life of flexible circuit board have been improved greatly.

As an embodiment of the present invention, the side surfaces of the fixing strips 32 corresponding to the outer sides of the fixing pins 33 are respectively provided with an annular adhesive ring 36, the side walls of the buffer blocks 21 corresponding to the adhesive rings 36 are respectively provided with an adhesive groove 37 matched with the adhesive rings, and an adhesive is arranged inside the adhesive groove 37; during operation, the fixing pin 33 is easily separated from the inside of the first fixing groove 34 and the second fixing groove 35 under the interference of external force, at this time, by arranging the bonding ring 36 and the bonding groove 37 which are matched with each other, when the fixing pin 33 and the two fixing grooves are installed, firstly, the bonding agent is filled in the bonding groove 37, and then in the matching process of the fixing pin 33 and the two fixing grooves, the bonding ring 36 on one side of the fixing pin 33 can be extruded into the bonding groove 37 and extrude the bonding agent in the fixing pin 33 out and distribute the bonding agent in the fixing bar 32 and the buffer block 21 at the mutually-jointed area, so that the fixing bar 32 can be bonded and fixed on the buffer block 21 by the extruded bonding agent and the bonding agent remained in the bonding groove 37, the matching failure of the fixing bar 32 and the buffer block 21 under the interference of external force is reduced, and the stability of the flexible circuit board during operation is.

As an embodiment of the present invention, positioning plates 26 are disposed on the lateral surfaces of the buffer block 21 corresponding to the two ends of the buffer slot 25, and the distance between the two positioning plates 26 is the same as the length of the buffer column 3; the buffer column 3 and the buffer groove 25 are arranged in an interference manner; the during operation, because foretell fixed needle 33 need carry out prepositioning with the in-process of two fixed slots mutually supporting, thereby the installation degree of difficulty of buffer block 21 with stiffening plate 15 has been increased, this moment through all being provided with locating plate 26 on the buffer block 21 side that corresponds at buffer slot 25 both ends, make buffer block 21 both ends and the locating plate 26 of both sides contact respectively when aliging, fixed needle 33 on the fixed strip 32 can align with two fixed slots this moment, thereby make things convenient for the direct mount of fixed needle 33 and two fixed slots, simultaneously through with buffer column 3 and buffer slot 25 interference mounting, make buffer column 3 can be more stable firm fix inside buffer slot 25, thereby further increased the stability of flexible circuit board at the during operation.

As an embodiment of the invention, an inclined transition strip 27 is arranged on the outer edge of the side surface of one end of the buffer block 21 away from the fixing strip 32, and the bottom surface of the transition strip 27 is in contact fit with the side surface of the reinforcing plate 15; the during operation, because there is the edges and corners buffer block 21 near buffer column 3, and there is the difference in height between buffer block 21 side and the stiffening plate 15 side of this edges and corners, thereby make body 1 that this region corresponds produce stress concentration's problem easily when passing through, this moment through setting up the transition strip 27 of slope, make transition strip 27 can carry out mild transition with the region between buffer block 21 side and the stiffening plate 15 side, the side of stiffening plate 15 can support and the effect transition strip 27's bottom surface simultaneously, thereby make transition strip 27 can more stable work, thereby further reduce the damage that flexible circuit board body 1 produced because of stress concentration.

As an embodiment of the present invention, two sets of cutting grooves 28 are symmetrically disposed on the side wall of the deformation zone 12, and the cutting grooves 28 are shaped like a semicircle and are uniformly distributed along the extension direction of the side wall of the deformation zone 12; in operation, in order to improve the bending performance of the deformation area 12, the semicircular cutting groove 28 is formed in the side surface of the deformation area 12, so that the tension applied to the side surface of the deformation area 12 during bending deformation can be effectively reduced, the flexible circuit board is more prone to side surface bending deformation, the bending performance of the flexible circuit board is optimized, and the working quality of the flexible circuit board is further improved.

A flexible circuit board terminal is suitable for the flexible circuit board, and comprises a module shell 4, wherein the module shell 4 comprises elastic pressing plates 41 which are symmetrically distributed at the outer edge of the side wall of a deformation area 12, the shapes of the pressing plates 41 are the same as the outer edge of the side wall of the deformation area 12, the two symmetrical pressing plates 41 are connected through a connecting plate 42, and the top end of the middle part of the connecting plate 42 is provided with a connecting rod 43; the during operation, stability when in order to reduce the installation zone of flexible circuit board and installation, can carry out the clamp plate 41 of adaptability pressfitting to deformation zone 12 through setting up on module casing 4 this moment, make deformation zone 12 both sides closely laminate under the effect of clamp plate 41 and fix in installation zone department, not only reduced the size requirement to the installation zone space and the equipment degree of difficulty at terminal, can also make the flexible circuit board after the installation carry out stable fixed and work, thereby improved the stability of flexible circuit board terminal at the during operation greatly.

As an embodiment of the present invention, the connecting rod 43 includes a fixed rod 44 and an adjusting rod 45, the bottom end of the fixed rod 44 is fixedly connected to the connecting plate 42, the top end of the fixed rod 44 is provided with a sliding slot 46, the adjusting rod 45 is located inside the sliding slot 46 and can freely slide inside the sliding slot 46, and a spring 47 is connected between the bottom end of the adjusting rod 45 and the bottom surface of the sliding slot 46; during operation, when the mounting area that deformation zone 12 corresponds appears uneven protruding, highly fixed clamp plate 41 produces great pressure to deformation zone 12 easily and makes it destroy this moment, set up the form that can adjust according to the mounting area through setting connecting rod 43 this moment, the deformation zone 12 that falls in the mounting area bellying this moment can exert pressure to the dead lever 44 at clamp plate 41 top for dead lever 44 atress and regulation pole 45 take place relative motion and compress the inside spring 47 of spout 46, thereby make clamp plate 41 can reduce deformation zone 12 damage because of too big extrusion force and lead to between the two when carrying out the pressfitting to deformation zone 12 smoothly, thereby further improved the stability of flexible circuit board terminal at the during operation.

During operation, firstly inserting the slot 22 on the buffer block 21 into the end part of the reinforcing plate 15 and installing the buffer block 21 at the outer edge of the reinforcing plate 15, at the moment, the first locking groove 23 can be aligned and communicated with the second locking groove 24, then inserting the locking strip 31 on the buffer column 3 into the two communicated locking grooves and enabling the second fixing groove 35 at the end part to be aligned and communicated with the first fixing groove 34, at the moment, the locking strip 31 in the two fixing grooves can stably fix the buffer block 21 at the end part of the reinforcing plate 15, and meanwhile, the buffer column 3 can be located in the buffer groove 25; then, the end part of the fixing strip 32 at one side of the buffer column 3 is stretched, and the fixing needle 33 at the end part is inserted into the first fixing groove 34 and the second fixing groove 35, so that the buffer column 3 at the end part of the locking strip 31 can be stably fixed on the buffer block 21 by the fixing needle 33; set up this moment and can carry out gentle transition with the 1 direct contact laminating of body of one side and make at the elastic buffer post 3 of 15 tip of stiffening plate, also can make the produced stress of body 1 when buckling of this region department can the dispersion effect on the buffer post 3 of arcwall face simultaneously, thereby effectual 1 produced stress of body of buckling 15 tip of stiffening plate cushions, reduce the fracture and the damage that flexible circuit board body 1 at 15 edges of stiffening plate produced because of stress concentration, thereby the operating quality and the life of flexible circuit board have been improved greatly.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A flexible circuit board comprising a body (1); the method is characterized in that: the body (1) comprises a bearing area (11) positioned in the middle and deformation areas (12) positioned at two ends of the bearing area (11), wherein the end part of the deformation area (12) at one side of the bearing area (11) is connected with a golden finger (13), and the end part of the deformation area (12) at the other side of the bearing area (11) is connected with a connecting piece (14); the back of the bearing area (11) is provided with a reinforcing plate (15) made of stainless steel, the outer edge of the reinforcing plate (15) jointed with the deformation area (12) is provided with a buffer structure (2), the buffer structure (2) comprises an elastic buffer block (21) made of rubber materials, the side of the buffer block (21) close to the reinforcing plate (15) is provided with a slot (22), the end part of the reinforcing plate (15) is inserted into the slot (22) and is tightly matched with the slot, the slot (22) is provided with a communicated first locking groove (23) along the side corresponding to the width direction of the reinforcing plate (15), the side corresponding to the first locking groove (23) of the reinforcing plate (15) is provided with a through second locking groove (24), the side of the buffer block (21) jointed with the body (1) is provided with a buffer groove (25) with a circular cross section, the interior of the buffer groove (25) is provided with an elastic buffer column (3) matched with the buffer groove, one side of the buffer column (3) close to the first locking groove (23) is provided with a locking strip (31), the locking strip (31) can be inserted into the first locking groove (23), the side face of the buffer column (3) corresponding to the extension direction of the deformation region (12) is provided with an elastic fixing strip (32), a group of evenly distributed fixing needles (33) are connected on the side surface corresponding to the inner end of the end part of the fixing strip (32), the radius of the fixing needle (33) is gradually reduced from inside to outside, a first fixing groove (34) and a second fixing groove (35) which are matched with the buffer block (21) and the locking strip (31) are respectively arranged on the side surfaces corresponding to the fixing needle (33), the fixing needle (33) can be respectively inserted into the first fixing groove (34) and the second fixing groove (35) and is tightly matched with the first fixing groove and the second fixing groove.

2. A flexible circuit board according to claim 1, wherein: all be provided with annular adhesive ring (36) on the fixed strip (32) side that fixed needle (33) outside corresponds, all be provided with on the buffer block (21) lateral wall that adhesive ring (36) correspond with it bonding groove (37), bonding groove (37) inside is equipped with the adhesive.

3. A flexible circuit board according to claim 1, wherein: positioning plates (26) are arranged on the side surfaces of the buffer blocks (21) corresponding to the two ends of the buffer groove (25), and the distance between the two positioning plates (26) is the same as the length of the buffer column (3); the buffer column (3) and the buffer groove (25) are arranged in an interference mode.

4. A flexible circuit board according to claim 2, wherein: an inclined transition strip (27) is arranged on the outer edge of the side face of one end, far away from the fixing strip (32), of the buffer block (21), and the bottom face of the transition strip (27) is in contact fit with the side face of the reinforcing plate (15).

5. A flexible circuit board according to claim 1, wherein: two groups of cutting grooves (28) are symmetrically arranged on the side wall of the deformation area (12), and the cutting grooves (28) are semicircular and are uniformly distributed along the extension direction of the side wall of the deformation area (12).

6. A flexible circuit board terminal adapted for use with the flexible circuit board of any one of claims 1-5, wherein: the terminal includes module casing (4), module casing (4) are including elastic pressing plate (41) of symmetric distribution at deformation zone (12) lateral wall outer fringe, the shape of pressing plate (41) is the same with deformation zone (12) lateral wall outer fringe shape, and links to each other through connecting plate (42) between two symmetrical pressing plates (41), connecting plate (42) middle part top is equipped with connecting rod (43).

7. A flexible circuit board terminal according to claim 6, characterized in that: the connecting rod (43) comprises a fixing rod (44) and an adjusting rod (45), the bottom end of the fixing rod (44) is fixedly connected with the connecting plate (42), a sliding groove (46) is formed in the top end of the fixing rod (44), the adjusting rod (45) is located in the sliding groove (46) and can freely slide in the sliding groove (46), and a spring (47) is connected between the bottom end of the adjusting rod (45) and the bottom surface of the sliding groove (46).