Aperture switching device and photographic device and electronic equipment

Abstract

The present invention provides an aperture switching device and a photographic device and electronic device thereof, wherein the aperture switching device comprises a base and a shell, wherein a first light-transmitting hole is provided on the base corresponding to the aperture, and a second light-transmitting hole is provided on the shell corresponding to the aperture, and the shell covers the base, and the base is provided with a rotating connection part and a sliding groove, and the clamping part is a driving power input terminal, which is fixed on the base; the two ends of the shape memory alloy wire are respectively connected to the clamping part; the movable protrusion is connected to the shape memory alloy wire; the elastic component is fixed at the rotating connection part and abuts against the movable protrusion; one end of the optical aperture switching unit is installed on the rotating connection part, and a switching groove is provided on the end, and the switching groove is installed on the movable protrusion. The present invention can change the size of the lens light intake aperture to adjust the amount of light entering the imaging system by adopting the drive of the shape memory metal wire.

Description

Technical Field

[0001] The present invention relates to the field of electronic equipment, and in particular to an aperture switching device and a photographing device and electronic equipment comprising the same. Background Art

[0002] As portable electronic devices such as smart phones and tablet computers become more and more popular, these electronic devices can include camera functions. For example, a voice coil motor-type mobile phone camera module aperture switch is a more common one.

[0003] However, the driving structure of the aperture switch of the voice coil motor mobile phone camera module is complex, and the product size is not easy to reduce. The aperture switch structure needs to be integrated with the camera motor structure, and cannot be an independent functional component, and it is selected for different modules to be assembled in a matching manner. The electromagnetic components in the switch are prone to electromagnetic interference with the camera voice coil motor.

[0004] In view of this, those skilled in the art are in urgent need of improving the structure of the aperture switching device in order to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the aperture switch in the prior art, such as the complex structure and difficulty in reducing the volume, and to provide an aperture switching device and its photographic device and electronic equipment.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] An aperture switching device comprises a base and a shell, wherein the base is provided with a first light-transmitting hole corresponding to the aperture, and the shell is provided with a second light-transmitting hole corresponding to the aperture, and the shell is covered on the base, wherein the base is provided with a rotating connection part and a sliding groove, and the aperture switching device further comprises:

[0008] The clamping part is a driving power input terminal, which is fixed on the base;

[0009] A shape memory alloy wire, two ends of which are electrically connected to the clamping parts respectively;

[0010] A movable protrusion, the movable protrusion is connected to the shape memory alloy wire and is slidably disposed in the sliding groove;

[0011] An elastic component, disposed between the rotating connection portion and the movable protrusion;

[0012] An optical aperture switching unit, one end of which is mounted on the rotating connection portion, and a switching groove is provided on the end, and the switching groove is mounted on the movable protrusion.

[0013] According to an embodiment of the present invention, the optical aperture switching unit includes a first movable portion and a second movable portion, and a third light-transmitting hole is formed on the first movable portion;

[0014] A fourth light-transmitting hole is formed on the second movable part;

[0015] The first movable part and the second movable part overlap, and when the first movable part and the second movable part rotate relatively, the third light-transmitting hole and the fourth light-transmitting hole adjust the size of the aperture.

[0016] According to an embodiment of the present invention, a mounting hole is respectively formed on the first movable part and the second movable part, and the first movable part is mounted on the rotating connecting part through the mounting hole.

[0017] According to one embodiment of the present invention, the switching groove includes a first switching groove and a second switching groove, the first switching groove is opened on the first movable part, the second switching groove is opened on the second movable part, and the first switching groove and the second switching groove are overlapped and installed on the movable protrusion.

[0018] According to an embodiment of the present invention, a stopper, a first limit stopper and a second limit stopper are provided on the base, and the first limit stopper, the second limit stopper and the stopper surround the sliding groove;

[0019] One end of the elastic component abuts against or is fixed to the stopper, and the other end of the elastic component abuts against or is fixed to the movable protrusion;

[0020] The first movable part and the second movable part are located between the first limit stopper and the second limit stopper and rotate.

[0021] According to an embodiment of the present invention, the elastic component includes a limiting portion and a clamping portion, the limiting portion and the clamping portion are connected via an elastic portion, the limiting portion abuts against or is fixed to the stop portion, and the clamping portion is clamped to the movable protrusion.

[0022] According to an embodiment of the present invention, the shape of the connecting portion of the limiting portion and the elastic portion is close to the letter D, and the shape of the engaging portion is close to the letter M.

[0023] According to an embodiment of the present invention, the clamping portion is a conductive terminal.

[0024] The present invention also provides a photographic device, which is characterized in that the photographic device includes the aperture switching device as described above.

[0025] The present invention also provides an electronic device, which is characterized in that the electronic device includes the camera device as described above.

[0026] The positive and progressive effects of the present invention are:

[0027] The driving unit adopted in the present invention is composed of a single shape memory alloy wire and a driving power input terminal, forming an adjustable aperture switching device that can be independently mounted on the camera module lens. Its motion conversion unit is composed of a movable protrusion and a sliding groove, and its optical aperture switching unit is composed of a plurality of shading plates, which also include a plurality of optical aperture openings of different sizes.

[0028] The movable protrusion guides the slot set in the optical aperture switching unit to switch the relative combination relationship of the light shielding sheet and change the size of the light-incoming aperture. The motion recovery device is composed of elastic elements to provide the motion mechanism and the optical aperture switching unit position reset.

[0029] The supporting base is provided with an optical opening and accommodates the above-mentioned unit. The outer cover is provided with an optical opening and is connected with the supporting base to provide sealing and protection for the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0031] Figure 1 It is an exploded view of the aperture switching device of the present invention.

[0032] Figure 2 It is a schematic diagram of the state in which the shell of the aperture switching device of the present invention is opened.

[0033] Figure 3 It is a schematic diagram of the internal structure of the aperture switching device of the present invention.

[0034] Figure 4 It is a schematic diagram of the overall structure of the internal structure of the aperture switching device of the present invention.

[0035] Figure 5 It is a schematic diagram of the structure of the elastic component in the aperture switching device of the present invention.

[0036] Figure 6 It is a structural schematic diagram of the clamping part in the aperture switching device of the present invention.

[0037] [Reference Signs]

[0038] Base 10

[0039] Housing 20

[0040] The first light transmission hole 11

[0041] The second light transmission hole 21

[0042] Rotating connection part 12

[0043] Sliding groove 13

[0044] Clamping part 30

[0045] Shape memory alloy wire 40

[0046] Active protrusion 50

[0047] Elastic member 60

[0048] Optical aperture switching unit 70

[0049] The first movable part 71

[0050] Second movable part 72

[0051] The third light transmission hole 711

[0052] Fourth light transmission hole 721

[0053] Mounting hole A

[0054] First switching slot 712

[0055] Second switching slot 722

[0056] Stopper 14

[0057] The first limit stopper 15

[0058] The second limit stopper 16

[0059] Limiting part 61

[0060] Engagement portion 62

[0061] Elastic portion 63 DETAILED DESCRIPTION

[0062] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0063] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0064] Furthermore, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the present invention specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this document.

[0065] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings connoted by each term.

[0066] Figure 1 It is an exploded view of the aperture switching device of the present invention. Figure 2 It is a schematic diagram of the state in which the shell of the aperture switching device of the present invention is opened. Figure 3 It is a schematic diagram of the internal structure of the aperture switching device of the present invention. Figure 4 It is a schematic diagram of the overall structure of the internal structure of the aperture switching device of the present invention. Figure 5 It is a schematic diagram of the structure of the elastic component in the aperture switching device of the present invention. Figure 6 It is a structural schematic diagram of the clamping part in the aperture switching device of the present invention.

[0067] like Figures 1 to 6 As shown, the present invention discloses an aperture switching device, comprising a base 10 and a housing 20, wherein a first light-transmitting hole 11 is provided on the base 10 corresponding to the aperture, and a second light-transmitting hole 21 is provided on the housing 20 corresponding to the aperture, and the housing 20 is covered on the base 10. The base 10 is provided with a rotating connection portion 12 and a sliding groove 13, and the aperture switching device further comprises: a clamping portion 30, a shape memory alloy wire 40, a movable protrusion 50, an elastic component 60 and an optical aperture switching unit 70.

[0068] The clamping part 30 (for example, two clamping parts 30 are used in this embodiment, but the number of the clamping parts 30 is not limited, and this is just an example) is mainly a driving power input terminal, which is fixed on the base 10. The clamping part 30 is preferably a conductive terminal.

[0069] The two ends of the shape memory alloy wire 40 are respectively connected to the clamping part 30. The movable protrusion 50 is connected to the shape memory alloy wire 40 and is slidably arranged in the sliding groove 13. The elastic component 60 is fixed at the rotating connection part 12 and abuts against the movable protrusion 50. One end of the optical aperture switching unit 70 is mounted on the rotating connection part 12, and a switching groove is opened on the end, and the switching groove is mounted on the movable protrusion 50.

[0070] In this way, when the current is transmitted to the shape memory alloy wire 40 through the clamping part 30, the shape memory alloy wire 40 contracts, driving the movable protrusion 50 to overcome the elastic force of the elastic component 60 and move toward the first light-transmitting hole 11 in the sliding groove 13. The movable protrusion 50 drives the switching groove to move, thereby controlling the light aperture switching unit, changing the overlapping shape, and achieving the effect of changing the aperture.

[0071] Preferably, the optical aperture switching unit 70 includes a first movable portion 71 and a second movable portion 72, and a third light-transmitting hole 711 is provided on the first movable portion 71. A fourth light-transmitting hole 721 is provided on the second movable portion 72. The first movable portion 71 and the second movable portion 72 are overlapped, and when the first movable portion 71 and the second movable portion 72 rotate relative to each other, the third light-transmitting hole 711 and the fourth light-transmitting hole 721 adjust the size of the aperture.

[0072] Further, a mounting hole A is respectively provided on the first movable part 71 and the second movable part 72, and the first movable part 71 is installed on the rotating connecting part 12 through the mounting hole A. The switching groove includes a first switching groove 712 and a second switching groove 722, and the first switching groove 713 is provided on the first movable part 71, and the second switching groove 723 is provided on the second movable part 72. The first switching groove 712 and the second switching groove 722 are overlapped and installed on the movable protrusion 50.

[0073] Furthermore, a stopper 14, a first limit stopper 15 and a second limit stopper 16 are provided on the base 10, and the first limit stopper 15, the second limit stopper 16 and the stopper 14 surround the sliding groove 13. One end of the elastic component 60 abuts against or is fixed to the stopper 14, and the other end of the elastic component 60 abuts against or is fixed to the movable protrusion 50. The first movable part 71 and the second movable part 72 are rotated between the first limit stopper 15 and the second limit stopper 16, and are used to limit the rotation angle between the first movable part 71 and the second movable part 72, and are used to adjust the size of the aperture.

[0074] Specifically, if Figure 4 As shown, in this embodiment, two clamping parts 30 are installed at two opposite corners of the base 10, the rotating connection part 12 is arranged at a top corner of the base 10, and the rotating connection part 12 is located in the middle of the clamping part 30, the sliding groove 13 is vertically arranged at an angle above the rotating connection part 12, the stopper 14 is arranged at an angle above the sliding groove 13, and the first limit stopper 15 and the second limit stopper 16 are respectively arranged on the left and right sides of the rotating connection part 12, and are located at two adjacent side edges of the base 10.

[0075] The two ends of the shape memory wire 40 are connected to the two clamping parts 30 respectively, and the shape memory wire 40 is stretched and connected to the movable protrusion 50 to form an L shape. Therefore, the shape memory wire 40 is located inside the first limit stopper 15 and the second limit stopper 16. As the shape memory wire 40 is driven to extend or shorten, the movable protrusion 50 slides in the sliding groove 13, thereby rotating the first movable part 71 and the second movable part 72.

[0076] Preferably, the elastic component 60 here includes a limiting portion 61 and a clamping portion 62, and the limiting portion 61 and the clamping portion 62 are connected by the elastic portion 63, so that the limiting portion 61 is abutted against or fixed with the stopper 14, and the clamping portion 62 is clamped with the movable protrusion 50. The shape of the limiting portion 61 and the elastic portion 63 connected is preferably close to the letter D, and the shape of the clamping portion 62 is preferably close to the letter M. The clamping portion 62 has a pushing and clamping function, and the elastic component 60 generates a thrust and a restoring force.

[0077] According to the above structural description, the aperture switching device of the present invention can be divided into a driving unit, a motion conversion unit, an optical aperture switching unit, a motion recovery device, a base and a housing. The driving unit is composed of a single shape memory alloy wire and a driving power input terminal to form an adjustable aperture switching device that can be independently mounted on the camera module lens.

[0078] The motion conversion unit is composed of a movable protrusion and a sliding groove, and the optical aperture switching unit is composed of a plurality of light shielding sheets (i.e., the first movable part, the second movable part, etc.), which contain a plurality of optical aperture openings of different sizes. The movable protrusion guides the slots set in the optical aperture switching unit to switch the relative combination relationship of the light shielding sheets and change the size of the light-inlet aperture.

[0079] The motion restoring device is composed of an elastic element, that is, an elastic component in this embodiment, which provides position restoration for the motion mechanism and the optical aperture switching unit.

[0080] The bearing base (i.e. the base in this embodiment) is provided with an optical opening and accommodates the above-mentioned unit. The outer cover (i.e. the housing in this embodiment) is provided with an optical opening and is connected with the bearing base to provide sealing and protection for the device.

[0081] When the shape memory wire 40 is energized, the movable protrusion 50 is driven to slide in the sliding groove 13, thereby driving the first movable part 71 and the second movable part 72 to rotate relative to each other, thereby adjusting the overlapping part between the third light-transmitting hole 711 and the fourth light-transmitting hole 721 to adjust the aperture size.

[0082] On the basis of the above structure, the present invention further provides a photographic device, which is equipped with the aperture switching device as described above.

[0083] Based on the above structure, the present invention also provides an electronic device, which is equipped with the above-mentioned camera device.

[0084] In summary, the aperture switching device of the present invention can be independently mounted on the camera module lens by adopting the drive of the shape memory metal wire, thereby changing the size of the lens light intake aperture to adjust the amount of light entering the imaging system.

[0085] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An aperture switching device, comprising a base and a shell, wherein the base is provided with a first light-transmitting hole corresponding to the aperture, the shell is provided with a second light-transmitting hole corresponding to the aperture, and the shell is covered on the base, characterized in that: The base is provided with a rotating connection portion and a sliding groove, and the aperture switching device further comprises: The clamping part is a driving power input terminal, which is fixed on the base; A shape memory alloy wire, two ends of which are electrically connected to the clamping parts respectively; A movable protrusion, the movable protrusion is connected to the shape memory alloy wire and is slidably disposed in the sliding groove; An elastic component, disposed between the rotating connection portion and the movable protrusion; An optical aperture switching unit, one end of which is mounted on the rotating connection portion, and a switching groove is provided on the end, and the switching groove is mounted on the movable protrusion; The optical aperture switching unit comprises at least a first movable portion and a second movable portion; The first movable part and the second movable part are mounted on the rotating connection part; The switching groove includes a first switching groove and a second switching groove, the first switching groove is opened on the first movable part, and the second switching groove is opened on the second movable part. The movable protrusion guide is arranged in the first switching groove and the second switching groove to switch the relative combination relationship of the first movable part and the second movable part to adjust the aperture size.

2. The aperture switching device according to claim 1, characterized in that: A third light-transmitting hole is provided on the first movable part; A fourth light-transmitting hole is formed on the second movable part; The first movable part and the second movable part overlap, and when the first movable part and the second movable part rotate relatively, the third light-transmitting hole and the fourth light-transmitting hole adjust the size of the aperture.

3. The aperture switching device according to claim 2, characterized in that: The first movable part and the second movable part are respectively provided with a mounting hole, and are mounted on the rotating connection part through the mounting holes.

4. The aperture switching device according to claim 2, characterized in that: The first switching groove and the second switching groove are installed on the movable protrusion in an overlapping manner.

5. The aperture switching device according to claim 2, characterized in that: The base is provided with a stopper, a first limit stopper and a second limit stopper, wherein the first limit stopper, the second limit stopper and the stopper surround the sliding groove; One end of the elastic component abuts against or is fixed to the stopper, and the other end of the elastic component abuts against or is fixed to the movable protrusion; The first movable part and the second movable part are located between the first limit stopper and the second limit stopper and rotate.

6. The aperture switching device according to claim 5, characterized in that: The elastic component includes a limiting portion and a clamping portion, the limiting portion and the clamping portion are connected via the elastic portion, the limiting portion abuts against or is fixed to the stopper portion, and the clamping portion is clamped to the movable protrusion.

7. The aperture switching device according to claim 6, characterized in that: The shape of the connecting portion of the limiting portion and the elastic portion is close to the letter D, and the shape of the engaging portion is close to the letter M.

8. The aperture switching device according to claim 1, characterized in that: The clamping portion is a conductive terminal.

9. A photographic device, characterized in that: The photographic device comprises the aperture switching device as described in any one of claims 1-8.

10. An electronic device, characterized in that: The electronic device comprises the camera device as claimed in claim 9.

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