Flexible circuit board, optical zoom lens and electronic equipment

Abstract

This invention provides a flexible circuit board, an optical zoom lens, and an electronic device. The flexible circuit board is used in the optical zoom lens, which includes a movable frame and a fixed frame. The movable frame is movably disposed relative to the fixed frame along the light transmission direction. The flexible circuit board includes a flexible circuit board body and a locking structure. The flexible circuit board body has a first terminal for connecting to the movable frame. The locking structure is connected to the first terminal, and a sensor probe is mounted on the side of the locking structure away from the flexible circuit board body, so that the sensor probe can sense and cooperate with a sensor sensing grid disposed on the fixed frame. This solution improves the flatness of the displacement sensor and has a simple structure that is easy to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of photographic imaging equipment, and in particular to a flexible circuit board, an optical zoom lens and an electronic device. Background Art

[0002] Optical zoom lenses can change their focal length within a certain range, thus obtaining different widths of field angles, different sizes of images and different ranges of scenery; without changing the shooting distance, the shooting range can be changed by changing the focal length, which is very helpful for picture composition. Since an optical zoom lens can also serve as several fixed-focus lenses, it not only reduces the amount of photographic equipment carried when traveling, but also saves time for changing lenses, and has a large application market.

[0003] Usually, an optical zoom lens includes a fixed frame and a moving frame, with lens groups respectively arranged on the fixed frame and the moving frame, and the moving frame can move relative to the fixed frame to perform optical zoom; during the zooming process, a displacement sensor is often required to sense the moving distance of the moving frame relative to the fixed frame to coordinate the zooming. At present, the optical zoom lens generally installs the displacement sensor probe on the moving frame, the sensor sensing grid on the fixed frame, and then connects the sensor probe to the interface at the outer end of the lens through a wiring structure, which makes it difficult to ensure the flatness of the displacement sensor, and it is also inconvenient to replace the sensor whose flatness does not meet the requirements. Summary of the invention

[0004] The main purpose of the present invention is to provide a flexible circuit board, an optical zoom lens and an electronic device, aiming to solve the technical problem that the flatness of the displacement sensor in the existing optical zoom lens is difficult to ensure and it is not convenient to replace the sensor whose flatness does not meet the requirements.

[0005] To achieve the above object, the present invention provides a flexible circuit board for an optical zoom lens, wherein the optical zoom lens comprises a movable frame and a fixed frame, wherein the movable frame is movably arranged relative to the fixed frame along a light transmission direction, and the flexible circuit board comprises:

[0006] A flexible circuit board body having a first terminal for connecting to the moving frame; and

[0007] The clamping structure is connected to the first terminal, and a sensor probe is installed on a side of the clamping structure away from the flexible circuit board body, so that the sensor probe can be inductively matched with a sensor induction grid arranged on the fixing frame.

[0008] Optionally, the positioning structure includes:

[0009] A buckle body connected to the first terminal, and the sensor probe is arranged on a side of the buckle body away from the flexible circuit board, and fixing parts are provided at both ends of the buckle body extending along the light transmission direction; and

[0010] The matching body is used to be arranged on the outer periphery of the movable frame, and the matching body is provided with a buckling groove along the light transmission direction, and the fixing part is buckled in the buckling groove.

[0011] Optionally, the mating body further comprises a limiting block, wherein the limiting block is arranged at an opening of the buckling groove and is used to limit the fixing portion from being separated from the buckling groove in a direction away from the mating body.

[0012] Optionally, an arc-shaped guide surface is provided at one end of the limiting block away from the buckling groove, and the arc-shaped guide surface is provided on a side of the limiting block facing the buckling groove.

[0013] Optionally, the first terminal is used to be connected to the light-emitting side or the light-incoming side of the movable frame, the flexible circuit board further includes a connecting circuit board, and the snap-fit ​​body is connected to the first terminal via the connecting circuit board.

[0014] Optionally, the locking structure further includes a metal piece, the metal piece is disposed on a side of the buckling body away from the flexible circuit board body, and the sensor probe is mounted on the metal piece.

[0015] In addition, the present invention also provides an optical zoom lens, comprising:

[0016] The fixed frame is hollow;

[0017] A movable frame is mounted in the fixed frame, a gap is provided between the movable frame and the fixed frame, and the movable frame is arranged to move relative to the fixed frame along the light transmission direction;

[0018] The flexible circuit board as described above is connected to the moving frame, wherein the sensor probe is fixed to the outer periphery of the moving frame; and

[0019] The sensor induction grid is arranged in the gap and fixed to the fixing frame. The sensor induction grid is extended along the light transmission direction so that the projection of the sensor probe and the sensor induction grid on the fixing frame overlaps.

[0020] Optionally, a snap buckle is provided on the light-emitting side or the light-incoming side of the movable frame, and the snap buckle includes a snap buckle body and a bent portion bent from one end of the snap buckle body away from the movable frame, and a snap buckle groove is formed between the bent portion and the light-emitting side or the light-incoming side of the movable frame, and one side of the first wiring terminal is fixed to the snap buckle groove.

[0021] Optionally, a positioning column is provided on the light emitting side or the light incident side of the movable frame, a positioning hole is opened on the first terminal, and the positioning column cooperates with the positioning hole to position the first terminal on the light emitting side or the light incident side of the movable frame.

[0022] In addition, the present invention also provides an electronic device, comprising the optical zoom lens as described above.

[0023] The flexible circuit board provided by the present invention is used for an optical zoom lens, the optical zoom lens includes a moving frame and a fixed frame, the moving frame is movably arranged relative to the fixed frame along the light transmission direction, the flexible circuit board includes a flexible circuit board body and a clamping structure, the flexible circuit board body has a first terminal for connecting to the moving frame; the clamping structure is connected to the first terminal, and a sensor probe is installed on the side of the clamping structure away from the flexible circuit board body, so that the sensor probe is inductively matched with the sensor sensing grid arranged on the fixed frame. In this scheme, the clamping structure is connected to the moving frame through the first terminal, and the sensor probe is installed on the side of the clamping structure away from the flexible circuit board, so that the sensor probe is arranged on the outer periphery of the moving frame to be inductively matched with the sensor sensing grid. In addition, on the one hand, the clamping structure can be fixed on the moving frame to prevent the sensor probe from moving relative to the moving frame to ensure flatness; on the other hand, since the sensor probe can directly contact the clamping structure, the flatness of the clamping structure itself can be adjusted to improve the flatness of the sensor probe. This scheme has a simple structure and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of a flexible circuit board of the present invention;

[0026] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0027] Figure 3 is a schematic structural diagram of an embodiment of the optical zoom lens of the present invention;

[0028] Figure 4 for Figure 3The enlarged schematic diagram of point B in the middle;

[0029] Figure 5 for Figure 3 A schematic diagram of the three-dimensional structure of the movable frame and the flexible circuit board;

[0030] Figure 6 for Figure 5 Enlarged schematic diagram of point C in the middle.

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 Flexible circuit board 3 Sensor probe 1 Flexible circuit board body 4 Wiring the circuit board 2 First terminal 22 Positioning hole 21 Card structure 200 Optical zoom lens 211 Snap body 210 Move Box 211a Fixed part 220 Fixed frame 211b Metal Parts 230 Sensor Induction Barrier 212 Matching body 240 Buckle 212a Limit block 250 Positioning column

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] At present, the displacement sensor probe of the optical zoom lens is generally installed on the moving frame, the sensor sensing grid is installed on the fixed frame, and the sensor probe is connected to the interface at the outer end of the lens through a wiring structure. As a result, the flatness of the displacement sensor is not easy to ensure, and it is also not convenient to replace the sensor whose flatness does not meet the requirements.

[0038] In view of this, the present invention provides a flexible circuit board, an optical zoom lens and an electronic device, aiming to solve the technical problem that the flatness of the displacement sensor in the existing optical zoom lens is not easy to ensure, and it is also inconvenient to replace the sensor whose flatness does not meet the requirements. Figures 1 to 6 , which is an embodiment of the flexible circuit board, optical zoom lens and electronic device provided by the present invention.

[0039] See also Figures 1 to 3 The flexible circuit board 100 provided by the present invention is used for an optical zoom lens 200, wherein the optical zoom lens 200 includes a moving frame 210 and a fixed frame 220, wherein the moving frame 210 is movably arranged relative to the fixed frame 220 along the light transmission direction, and the flexible circuit board 100 includes a flexible circuit board body 1 and a clamping structure 21, wherein the flexible circuit board body 1 has a first terminal 2 for connecting to the moving frame 210; the clamping structure 21 is connected to the first terminal 2, and a sensor probe 3 is installed on a side of the clamping structure 21 away from the flexible circuit board body 1, so that the sensor probe 3 is inductively matched with a sensor sensing grid 230 arranged on the fixed frame 220.

[0040] In this solution, the positioning structure 21 is connected to the moving frame 210 through the first terminal 2, and the sensor probe 3 is installed on the side of the positioning structure 21 away from the flexible circuit board 100, so that the sensor probe 3 is arranged on the outer periphery of the moving frame 210 to cooperate with the sensor sensing grid 230. In addition, on the one hand, the positioning structure 21 can be fixed on the moving frame 210 to prevent the sensor probe 3 from moving relative to the moving frame 210 to ensure the flatness; on the other hand, since the sensor probe 3 can directly contact the positioning structure 21, the flatness of the positioning structure 21 itself can be adjusted to improve the flatness of the sensor probe 3. This solution has a simple structure and is easy to assemble. It can be understood that the optical zoom lens 200 usually includes a fixed frame 220 and a moving frame 210, and lens groups are respectively provided on the fixed frame 220 and the moving frame 210. The moving frame 210 can move relative to the fixed frame 220 to perform optical zoom. In addition, the light transmission direction is the direction in which the moving frame 210 approaches the fixed frame 220. At the same time, the positioning structure 21 can be detachably fixed to the moving frame 210. When the flatness of the positioning structure 21 does not meet the requirements of the sensor probe 3, the flexible circuit board 100 and the sensor probe 3 can be directly replaced as a whole to avoid adjusting the moving frame 210 and improve replacement efficiency.

[0041] It should be noted that there is no limitation on the form of the sensor probe 3 and the sensor sensing grid 230, which can be in the form of a magnetic grating sensor probe 3 and a magnetic grating, or in the form of a grating sensor probe 3 and a grating. There is no limitation here, as long as it can be arranged in the optical zoom lens 200 to detect the moving distance of the moving frame 210 relative to the fixed frame 220.

[0042] For further information, see Figures 4 to 6 The locking structure 21 includes a buckling body 211 and a matching body 212. The buckling body 211 is connected to the first terminal 2, and the sensor probe 3 is arranged on the side of the buckling body 211 away from the flexible circuit board 100. The two ends of the buckling body 211 are provided with fixing parts 211a extending along the light transmission direction; the matching body 212 is used to be arranged on the outer periphery of the moving frame 210, and the matching body 212 is provided with a buckling groove along the light transmission direction, and the fixing part 211a is buckled in the buckling groove. The number of the buckling grooves corresponds to the number of the fixing parts 211a. In this embodiment, the fixing parts 211a and the buckling grooves are respectively provided with two. The fixing part 211a cooperates with the buckling grooves to fix the sensor probe 3 on the moving frame 210. The buckling structure is simple, and the flatness of the sensor probe 3 is ensured while saving costs.

[0043] For further information, see Figure 6 The mating body 212 further includes a limit block 212a, which is disposed at the opening of the snap-fit ​​groove to limit the fixing portion 211a from being separated from the snap-fit ​​groove in a direction away from the mating body 212. With such a configuration, after the fixing portion 211a is snap-fitted into the snap-fit ​​groove, the limit block 212a limits the fixing portion 211a from being separated from the snap-fit ​​groove to ensure the reliability of the locking structure 21. Specifically, an arc-shaped guide surface is disposed at one end of the limit block 212a away from the snap-fit ​​groove, and the arc-shaped guide surface is disposed on the side of the limit block 212a facing the snap-fit ​​groove, so that the fixing portion 211a can be installed in the snap-fit ​​groove through the arc-shaped guide surface. It can be understood that there is no limit to the number of the limit blocks 212a, and there can be one or more limit blocks at the opening of each snap-fit ​​groove. There is no limit here. In the present embodiment, there is one limit block 212a at the opening of each snap-fit ​​groove.

[0044] For further information, see Figure 5In order to save space and reduce the volume of the optical zoom lens 200, the first terminal 2 is used to connect to the light-emitting side or the light-entering side of the moving frame 210. At this time, in order to avoid the first terminal 2 from interfering with the matching body 212 and affecting the service life of the flexible circuit board 100, the flexible circuit board 100 also includes a connecting circuit board, and the buckling body 211 is connected to the first terminal 2 through the connecting circuit board. It can be understood that the sensor probe 3 is also connected to the first terminal 2 through the connecting circuit board 4. The sensor probe 3, the connecting circuit board 4 and the buckling body 211 are stacked in sequence along the direction close to the moving frame 210. In addition, in this embodiment, in order to facilitate the processing and molding of the flexible circuit board 100, the connecting circuit board 4 is integrally arranged with the flexible circuit board 100.

[0045] Furthermore, in order to improve the flatness of the sensor probe 3 by improving the flatness of the locking structure 21, the locking structure 21 further includes a metal piece 211b, which is disposed on a side of the buckling body 211 away from the flexible circuit board body 1, and the sensor probe 3 is mounted on the metal piece 211b. Thus, the high flatness of the surface of the metal piece 211b is utilized to ensure the flatness of the sensor probe 3. It is understandable that the arrangement form of the metal piece 211b is not limited, and the metal piece 211b may be independent of the buckling body 211 and disposed on a side of the buckling body 211 away from the flexible circuit board body 1, that is, the sensor probe 3, the wiring circuit board 4, the metal piece 211b and the buckling body 211 are stacked in sequence along the direction close to the moving frame 210, or other forms may be used. In this embodiment, the snap-fit ​​body 211 is made of metal, and the snap-fit ​​body 211 is the metal piece 211b, that is, the metal piece 211b is integrally provided with the snap-fit ​​body 211 to ensure the flatness of the sensor probe 3. In addition, the sensor induction grid 230 can also be fixed to the fixing frame 220 through a metal workpiece, so that the flatness of the sensor is ensured by both the sensor probe 3 and the sensor induction grid 230.

[0046] In addition, the present invention further provides an optical zoom lens 200, which includes a fixed frame 220, a moving frame 210, the flexible circuit board 100 as described above, and a sensor sensing grid 230, wherein the fixed frame 220 is hollow, the moving frame 210 is inserted into the fixed frame 220, a gap is provided between the moving frame 210 and the fixed frame 220, and the moving frame 210 is movably provided relative to the fixed frame 220 along a light transmission direction; the flexible circuit board 100 is connected to the moving frame 210, wherein the sensor probe 3 is fixed to the outer periphery of the moving frame 210; the sensor sensing grid 230 is provided in the gap and fixed to the fixed frame 220, and the sensor sensing grid 230 is extended along the light transmission direction so that the projection of the sensor probe 3 and the sensor sensing grid 230 on the fixed frame 220 overlaps. In this solution, the sensor probe 3 is arranged on the outer periphery of the moving frame 210 through the flexible circuit board 100, so as to facilitate the induction cooperation with the sensor sensing grid 230 to obtain the position information when the moving frame 210 moves. Since the clamping structure 21 is provided on the flexible circuit board 100, and the sensor probe 3 is provided on the clamping structure 21, the sensor probe 3 is prevented from moving relative to the moving frame 210 when the clamping structure 21 is fixed on the moving frame 210 to ensure the flatness; at the same time, the metal part 211b can be provided on the clamping structure 21 to improve the flatness of the clamping structure 21 itself, thereby improving the flatness of the sensor probe 3. In addition, when the flatness of the clamping structure 21 does not meet the requirements of the sensor probe 3, the flexible circuit board 100 and the sensor probe 3 can be directly replaced as a whole to avoid the adjustment of the moving frame 210 and improve the replacement efficiency. This solution has a simple structure and is easy to operate.

[0047] In order to prevent the first wiring terminal 2 from moving and affecting the locking structure 21, the first wiring terminal 2 needs to be fixed to the light-emitting side or light-entering side of the moving frame 210. Specifically, there is no restriction on the fixing method of the first wiring terminal 2 to the light-emitting side or light-entering side of the moving frame 210, as long as the two can be fixed, it can be fixed by bolts, fixed by glue, or other methods. In this embodiment, please refer to Figure 3, a buckle 240 is provided on the light-emitting side or the light-entering side of the mobile frame 210, and the buckle 240 includes a buckle 240 body and a bent portion bent from one end of the buckle 240 body away from the mobile frame 210, and a buckle groove is formed between the bent portion and the light-emitting side or the light-entering side of the mobile frame 210, and one side of the first terminal 2 is fixed to the buckle groove. The first terminal 2 is fixed to the light-entering side or the light-emitting side of the mobile frame 210 by the buckle 240, reducing the risk of the first terminal 2 moving and causing the sensor probe 3 to move. It can be understood that there is no limit to the number of the buckles 240, and there can be only one or more. In the present embodiment, there are two buckles 240. In addition, the first terminal 2 can also be fixed to the light-emitting side or the light-entering side of the mobile frame 210 by bolts.

[0048] For further information, see Figure 5 In order to facilitate fixing the first terminal 2 to the light incident side or light exit side of the moving frame 210, a positioning column 250 is provided on the light exit side or light incident side of the moving frame 210, and a positioning hole 22 is provided on the first terminal 2. The positioning column 250 cooperates with the positioning hole 22 to facilitate positioning the first terminal 2 on the light incident side or light exit side of the moving frame 210. It can be understood that the number of the positioning columns 250 is not limited, and multiple or one positioning column 250 can be provided. The positioning hole 22 is provided corresponding to the positioning column 250. In this embodiment, one positioning column 250 is provided corresponding to the positioning hole 22.

[0049] In addition, the present invention also provides an electronic device, comprising the optical zoom lens 200 as described above.

[0050] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flexible circuit board for an optical zoom lens, wherein the optical zoom lens comprises a movable frame and a fixed frame, wherein the movable frame is movably arranged relative to the fixed frame along a light transmission direction, wherein: The flexible circuit board comprises: A flexible circuit board body having a first terminal for connecting to the moving frame; and A positioning structure connected to the first terminal, and a sensor probe is installed on a side of the positioning structure away from the flexible circuit board body, and the sensor probe is fixed to the outer periphery of the movable frame so that the sensor probe is inductively matched with a sensor induction grid arranged on the fixed frame; The clamping structure comprises: A buckle body connected to the first terminal, and the sensor probe is arranged on a side of the buckle body away from the flexible circuit board, and fixing parts are provided at both ends of the buckle body extending along the light transmission direction; and A matching body, the matching body is used to be arranged on the outer periphery of the movable frame, and the matching body is provided with a buckling groove along the light transmission direction, and the fixing part is buckled in the buckling groove; The first terminal is used to be connected to the light-emitting side or the light-incoming side of the movable frame. The flexible circuit board also includes a connecting circuit board, and the buckling body is connected to the first terminal via the connecting circuit board.

2. The flexible circuit board according to claim 1, characterized in that: The mating body further comprises a limiting block, which is arranged at the opening of the buckling groove and is used to limit the fixing portion from being separated from the buckling groove in a direction away from the mating body.

3. The flexible circuit board according to claim 2, characterized in that: An arc-shaped guide surface is arranged at one end of the limiting block away from the buckling groove, and the arc-shaped guide surface is arranged at one side of the limiting block facing the buckling groove.

4. The flexible circuit board according to claim 1, characterized in that: The locking structure further comprises a metal piece, which is arranged on a side of the buckling body away from the flexible circuit board body, and the sensor probe is mounted on the metal piece.

5. An optical zoom lens, characterized in that: include: The fixed frame is hollow; A movable frame is mounted in the fixed frame, a gap is provided between the movable frame and the fixed frame, and the movable frame is arranged to move relative to the fixed frame along the light transmission direction; The flexible circuit board according to any one of claims 1 to 4, connected to the moving frame, wherein the sensor probe is fixed to the outer periphery of the moving frame; as well as, The sensor induction grid is arranged in the gap and fixed to the fixing frame. The sensor induction grid is extended along the light transmission direction so that the projection of the sensor probe and the sensor induction grid on the fixing frame overlaps.

6. The optical zoom lens according to claim 5, wherein: A snap buckle is provided on the light emitting side or the light incident side of the movable frame, and the snap buckle includes a snap buckle body and a bent portion bent from one end of the snap buckle body away from the movable frame, a snap buckle groove is formed between the bent portion and the light emitting side or the light incident side of the movable frame, and one side of the first wiring terminal is fixed to the snap buckle groove.

7. The optical zoom lens according to claim 6, wherein: A positioning column is provided on the light emitting side or the light incident side of the movable frame, a positioning hole is provided on the first terminal, and the positioning column cooperates with the positioning hole to position the first terminal on the light emitting side or the light incident side of the movable frame.

8. An electronic device, characterized in that: Comprising the optical zoom lens as claimed in any one of claims 5 to 7.

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