CN113133189A - Flexible circuit board, zoom lens and electronic equipment - Google Patents
Flexible circuit board, zoom lens and electronic equipment Download PDFInfo
- Publication number
- CN113133189A CN113133189A CN202110508517.1A CN202110508517A CN113133189A CN 113133189 A CN113133189 A CN 113133189A CN 202110508517 A CN202110508517 A CN 202110508517A CN 113133189 A CN113133189 A CN 113133189A
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- China
- Prior art keywords
- circuit board
- section
- bending
- flexible circuit
- deformation
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structure Of Printed Boards (AREA)
Abstract
The invention discloses a flexible circuit board, a zoom lens and electronic equipment, which comprise a circuit board main body extending along the front-back direction, wherein the circuit board main body comprises a deformation section, a first connecting section connected with the front end of the deformation section and a second connecting section connected with the rear end of the deformation section; the deformation section is formed by bending the circuit board to form a bending section, and the tensile strength of the bending section is greater than that of the rest part of the deformation section. The middle part of the circuit board main body is set as a deformation section, the circuit board main body can have longer length expansion in the pulling process through deformation, the circuit board main body can be stretched to prevent tearing, the circuit board main body has smaller volume when not being pulled, and the middle arch of the flexible circuit board can not be caused; the deformation section is through forming the bending segment with circuit board bending type, and the tensile strength of bending segment is greater than the tensile strength of the remaining position of deformation section, can be so that flexible circuit board has anti-tear effect when being dragged in the use.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a flexible circuit board, a zoom lens, and an electronic device.
Background
The flexible printed circuit board FPC 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 flexibility, has the characteristics of high wiring density, light weight, thin thickness and good bending property, and is widely applied.
A VCM motor and a position sensor are commonly applied to an optical zoom lens of security monitoring, photography and camera shooting and various intelligent terminals (such as mobile phones, automobiles, robots and the like), and because a coil or the position sensor is installed on a zooming or focusing group, namely a moving group frame, a flexible circuit board FPC is needed, and the coil or the position sensor on the moving group is connected to an interface at the outer end of a lens through a circuit. However, due to the movement of the moving group, the existing flexible printed circuit board FPC is torn, which is not favorable for the service life of the flexible printed circuit board FPC.
Disclosure of Invention
The invention mainly aims to provide a flexible circuit board, a zoom lens and electronic equipment, and aims to solve the problem that the existing flexible circuit board is pulled and torn in the using process.
In order to achieve the above object, the present invention provides a flexible circuit board, including a circuit board main body extending along a front-back direction, wherein the circuit board main body includes a deformation section, a first connection section connected to a front end of the deformation section, and a second connection section connected to a rear end of the deformation section;
the deformation section is formed by bending a circuit board to form a bending section, and the tensile strength of the bending section is greater than that of the rest part of the deformation section.
Optionally, the bent section is arranged in a circular arc shape.
Optionally, the arc of the bend is greater than 180 °.
Optionally, the deformation section is formed by bending a circuit board for multiple times to form multiple bending sections, and the opening directions of every two adjacent bending sections are opposite.
Optionally, the thickness of the bending section is larger than that of the rest part of the deformation section.
Optionally, the tensile strength of the bending section is gradually increased from the two sides to the middle.
Optionally, the rear end of deformation section include with the third linkage segment that the bending segment is connected, the second linkage segment with the third linkage segment is the contained angle setting.
The present invention also provides a zoom lens including:
the base is convexly provided with a guide shaft;
the movable carrier is movably connected to the guide shaft along the vertical direction; and the number of the first and second groups,
the flexible circuit board is as described above, the first connecting section is connected with the mobile carrier, and the second connecting section is fixed to the outside.
Optionally, the first connecting section and the second connecting section are both in a plate shape, the first connecting section is matched with the connecting part of the movable carrier, and the second connecting section is provided with at least one positioning part to be positioned and fixed with at least one external structure.
The invention also provides electronic equipment comprising the zoom lens.
According to the technical scheme, the middle part of the circuit board main body is set as the deformation section, the circuit board main body can have longer length expansion in the pulling process through deformation, the circuit board main body can be stretched to prevent tearing, the circuit board main body has smaller volume when not being pulled, and the middle of the flexible circuit board cannot be arched; the deformation section is through bending circuit board and forming the bending section, and the tensile strength of bending section is greater than the tensile strength at the remaining position of deformation section, can be so that flexible circuit board has anti-tear effect when being dragged in the use, and then improves flexible circuit board's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a flexible circuit board according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the flexible printed circuit board of FIG. 1 after being pulled apart;
fig. 3 is a schematic perspective view of another embodiment of a flexible circuit board provided by the present invention;
FIG. 4 is a schematic diagram of the flexible printed circuit board of FIG. 3 after being pulled apart;
FIG. 5 is a schematic perspective view of a zoom lens according to an embodiment of the present invention;
FIG. 6 is a schematic view of the moving carrier of FIG. 3 after movement;
the reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
3 | Second connecting |
| 1 | |
200 | |
| 11 | |
210 | |
| 12 | Third connecting |
220 | |
| 2 | First connecting section |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The flexible printed circuit board FPC 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 flexibility, has the characteristics of high wiring density, light weight, thin thickness and good bending property, and is widely applied.
A VCM motor and a position sensor are commonly applied to an optical zoom lens of security monitoring, photography and camera shooting and various intelligent terminals (such as mobile phones, automobiles, robots and the like), and because a coil or the position sensor is installed on a zooming or focusing group, namely a moving group frame, a flexible circuit board FPC is needed, and the coil or the position sensor on the moving group is connected to an interface at the outer end of a lens through a circuit. However, due to the movement of the moving group, the existing flexible printed circuit board FPC is torn, which is not favorable for the service life of the flexible printed circuit board FPC.
In view of the above, the present invention provides a flexible circuit board, and fig. 1 to 6 are diagrams of an embodiment of the flexible circuit board according to the present invention.
Referring to fig. 1 to 4, the flexible circuit board 100 includes a circuit board main body extending in a front-to-rear direction, and the circuit board main body includes a deformation section 1, a first connection section 2 connected to a front end of the deformation section 1, and a second connection section 3 connected to a rear end of the deformation section 1; the deformation section 1 is formed by bending a circuit board to form a bending section 11, and the tensile strength of the bending section 11 is greater than that of the rest part of the deformation section 1. Here, the front-back direction is a direction in which they are arranged oppositely. The middle part of the circuit board main body is set as a deformation section 1, the circuit board main body can have longer length expansion in the pulling process through deformation, the circuit board main body can be stretched to prevent tearing, the circuit board main body has smaller volume when not being pulled, and the middle arch of the flexible circuit board 100 cannot be caused; deformation section 1 is through bending circuit board and forming bending section 11, and bending section 11's tensile strength is greater than the tensile strength at the 1 rest position of deformation section, can be so that flexible circuit board 100 has the effect of preventing tearing when being dragged in the use, and then improves flexible circuit board 100's life.
Further, the bending section 11 is disposed in an arc shape. Be circular-arc setting through setting up bending segment 11, can be so that deformation section 1 can have longer shrink space under the condition of not piling up to 11 smooth transition of bending segment of circular-arc setting makes can not damaged in circuit board bending process.
Further, the curvature of the bending section 11 is larger than 180 °. Radian through setting up bending segment 11 is greater than 180, can enlarge the bending area of 1 turn of deformation section, make the interior circle of turning round ring big with the turn circuit of 1 surplus part of deformation section of excircle than, bending segment 11 is not on a straight line with 1 surplus part of deformation section promptly, and simultaneously, the inboard tensile strength in the outside of bending segment 11 is big than, and flexible circuit board 100 receives the inboard of bending segment 11 when dragging and is dragged by priority, even drag and also can not make bending segment 11 when the limit torn. Practice proves that the anti-tearing effect of the bending section 11 with the radian larger than 180 degrees is greatly better than that of the bending section with the radian smaller than or equal to 180 degrees.
Further, the deformation section 1 is formed by bending a circuit board for multiple times to form a plurality of bending sections 11, and the opening directions of every two adjacent bending sections 11 are opposite. The deformation section 1 is formed by bending the circuit board for multiple times, so that the actual length of the flexible circuit board 100 can be increased, and the pulling force received when the flexible circuit board is stretched is small, thereby preventing tearing; set up the opening orientation of a plurality of bending segments 11 simultaneously opposite, also the deformation section 1 is that to come and go many times and buckle, when increasing the actual length of the 1 flexible circuit board 100 of deformation section like this, can not increase the length of deformation section 1, and then improves the flexible volume of deformation section 1, prevents the production of tearing.
Further, the thickness of the bending section 11 is larger than that of the rest part of the deformation section 1. By increasing the thickness of the bend section 11, the tensile strength of the bend section 11 can be increased, so that the bend section is not easily torn when pulled.
Further, the tensile strength of the bending section 11 is gradually increased from the two sides to the middle. Set up the tensile strength of buckling section 11 and be gradually big from both sides to centre, transition and connection that on the one hand can be fine with 1 remaining positions in deformation section, the sudden change appears in the tensile strength who is unlikely to in whole flexible circuit board 100, on the other hand, in-process is dragged at flexible circuit board 100, is pulled the limit to when flexible circuit board 100, and it is dragged power and also slowly passes through buckling section 11, is greater than the edge in the middle of 11 tensile strengths through buckling section, also can effectively prevent buckling section 11 by tearing.
Further, referring to fig. 1 and 3, the rear end of the deformation section 1 includes a third connecting section 12 connected to the bending section 11, and the second connecting section 3 and the third connecting section 12 are arranged at an included angle. The second connecting section 3 and the third connecting section 12 are arranged at an included angle, so that the flexible circuit board 100 in a stretching state can have different shapes, and can adapt to different installation environments. Here, the angle may be 180 °, i.e. the case where the second connecting section 3 and the third connecting section 12 are collinear; the included angle may also be 90 °, that is, in the case that the second connecting section 3 and the third connecting section 12 are perpendicular, the stretched flexible circuit board 100 can be far away from the lens when perpendicular, and light blocking can be prevented; of course, the angle can be set to be different according to different practical application situations.
Referring to fig. 5 and 6, the present invention further provides a zoom lens 200, where the zoom lens 200 includes a base, a moving carrier 220 and a flexible circuit board 100, and a guide shaft 210 is protruded on the base; the movable carrier 220 is movably connected to the guide shaft 210 in the up-down direction; and, the flexible circuit board 100 is the flexible circuit board 100 as described above, the first connection section 2 is connected with the movable carrier 220, and the second connection section 3 is fixed with the outside.
The movable carrier 220 slides up and down on the guide shaft 210, so that one end of the flexible circuit board 100 is driven to move up and down along with the movable carrier 220, the flexible circuit board 100 is stretched when the movable carrier 220 moves up or down, and the deformation section 1 of the flexible circuit board 100 effectively ensures that the flexible circuit board is not torn by pulling, so that the service life of the flexible circuit board 100 is ensured, the durability of the zoom lens 200 is ensured, the structure of the flexible circuit board 100 can also avoid the generation of noise abrasion in the movement process, and the use requirements of the optical zoom lens 200 under various environments are met
Further, the first connecting section 2 and the second connecting section 3 are both in a plate shape, the first connecting section 2 is matched with the connecting part of the movable carrier 220, and the second connecting section 3 is provided with at least one positioning part to be positioned and fixed with at least one external structure.
The first connecting section 2 and the second connecting section 3 are arranged in a plate shape, so that the contact area between the flexible circuit board 100 and the mobile carrier 220 or the outside is increased, and the flexible circuit board 100, the mobile carrier 220 and the external structure are positioned, fixed and locked; by providing at least one positioning portion on the second connection section 3, the flexible circuit board 100 is facilitated to be positioned and fixed with at least one external structure, so as to adapt to different installation environments. The positioning part and the connecting part can adopt a positioning and fixing mode of the positioning columns, can also be locked and attached through screws by arranging threaded holes, can be adhered by glue, is not limited in the position, and can be set in a fixing mode of the positioning part according to actual conditions.
The present invention also provides an electronic apparatus including the zoom lens 200 as described above. The electronic device may be a mobile phone, or other electronic devices such as an automobile or a robot. Here, the zoom lens 200 and the electronic apparatus including the flexible circuit board 100 described above are all the electronic apparatuses proposed by the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A flexible circuit board is characterized by comprising a circuit board main body extending in the front-back direction, wherein the circuit board main body comprises a deformation section, a first connecting section connected with the front end of the deformation section and a second connecting section connected with the rear end of the deformation section;
the deformation section is formed by bending a circuit board to form a bending section, and the tensile strength of the bending section is greater than that of the rest part of the deformation section.
2. The flexible circuit board of claim 1, wherein the bent section is disposed in a circular arc shape.
3. The flexible circuit board of claim 2, wherein the bend section has an arc greater than 180 °.
4. The flexible circuit board according to claim 3, wherein the deformation section is formed by bending a circuit board material for multiple times to form multiple bending sections, and the openings of every two adjacent bending sections face opposite directions.
5. The flexible circuit board of claim 1, wherein the thickness of the bending section is greater than the thickness of the remaining portion of the deformation section.
6. The flexible circuit board of claim 1, wherein the bending section has a tensile strength gradually increasing from two sides to the middle.
7. The flexible circuit board of claim 1, wherein the rear end of the deformation section comprises a third connection section connected to the bending section, and the second connection section and the third connection section are disposed at an included angle.
8. A zoom lens, comprising:
the base is convexly provided with a guide shaft;
the movable carrier is movably connected to the guide shaft along the vertical direction; and the number of the first and second groups,
the flexible circuit board according to any one of claims 1 to 7, wherein the first connection section is connected to the moving carrier, and the second connection section is fixed to the outside.
9. The zoom lens according to claim 8, wherein the first connecting section and the second connecting section are both disposed in a plate shape, the first connecting section is adapted to the connecting portion of the moving carrier, and the second connecting section is provided with at least one positioning portion for positioning and fixing with at least one external structure.
10. An electronic device characterized by comprising the zoom lens according to any one of claims 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110508517.1A CN113133189A (en) | 2021-05-10 | 2021-05-10 | Flexible circuit board, zoom lens and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110508517.1A CN113133189A (en) | 2021-05-10 | 2021-05-10 | Flexible circuit board, zoom lens and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113133189A true CN113133189A (en) | 2021-07-16 |
Family
ID=76781378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110508517.1A Pending CN113133189A (en) | 2021-05-10 | 2021-05-10 | Flexible circuit board, zoom lens and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN113133189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498235A (en) * | 2021-12-30 | 2022-05-13 | 歌尔光学科技有限公司 | Electronic product and switching control method of flexible connecting piece thereof |
-
2021
- 2021-05-10 CN CN202110508517.1A patent/CN113133189A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498235A (en) * | 2021-12-30 | 2022-05-13 | 歌尔光学科技有限公司 | Electronic product and switching control method of flexible connecting piece thereof |
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