A variable aperture camera driving device

Abstract

The utility model relates to the technical field of electronic devices, and in particular to a variable aperture camera drive device, including a protective shell, a base, a carrier assembly, a blade assembly and a drive assembly. The blade assembly includes a blade and a connecting member, and the connecting member is connected to the blade, a fixed carrier and a rotating carrier; the connecting member includes a connecting body, a first connecting member, a second connecting member and a third connecting member. When the rotating carrier rotates, the contact surface of the second connecting member slides in a strip groove with the first connecting member and the third connecting member as the axis point to rotate the blade. The advantage of the utility model is that the blade assembly adopts a blade single-point self-rotation structure. The blade is used as a follower. Compared with the existing structure, the contact area with the rotating carrier is large and not easy to deform, which greatly reduces the problem of the blade jamming the rotating carrier. In addition, it replaces the traditional blade rotating structure around the axis, avoiding the problem of blade deformation caused by blade jamming and lateral falling.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to a variable aperture camera driving device. Background Art

[0002] With the development of electronic technology, users of electronic devices (such as smart phones or digital cameras) now have higher and higher requirements for photo or video recording functions, and the demand for miniature camera modules is also increasing. As for the camera aperture, in places with strong light, the camera can obtain a deeper depth of field and a sharper picture by reducing the aperture, and in places with insufficient light, the amount of light entering can be increased by increasing the aperture, so that a pure picture with higher exposure and lower noise can be obtained.

[0003] In the prior art, most of them are blade slotted slides, in which the blades are attached to the rotating carrier, and the blades are driven to rotate around the stator guide column by rotating the movable guide column. This control method requires precise control of the gap between the blade hole and the guide column, and also needs to consider the relative position, curvature and force angle of the blade slide, which may cause the rotating carrier to be stuck.

[0004] Therefore, it is necessary to provide a new connection method between the blade and the carrier assembly to solve the problem of the rotating carrier being stuck when the blade rotates. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a variable aperture camera drive device, which solves the problem in the prior camera drive device that the blades and the rotating carrier are attached together, and the rotating carrier may be stuck during operation.

[0006] To achieve the above object, the utility model is implemented through the following technical solutions: a variable aperture camera driving device, comprising:

[0007] Protective case;

[0008] A base, which is engaged with the protective shell to form a receiving space;

[0009] A carrier assembly is arranged in the accommodation space, comprising a fixed carrier and a rotating carrier that cooperate with each other, and a strip groove is arranged on the rotating carrier;

[0010] The blade assembly comprises a blade and a connecting member, wherein the connecting member is connected to the blade, a fixed carrier and a rotating carrier; the connecting member comprises:

[0011] A connector, fixed on the blade;

[0012] A first connecting member connected to a connecting hole on the fixing carrier;

[0013] A second connecting member is connected to the strip groove on the rotating carrier; the outer wall surface of the second connecting member is formed with a contact surface that contacts the strip groove;

[0014] A third connecting member connected to the base;

[0015] When the rotating carrier rotates, the contact surface of the second connecting member slides in the strip groove with the first connecting member and the third connecting member as axis points to make the blades rotate.

[0016] Preferably, the connecting body is a plate body fixed on the blade; the first connecting member and the third connecting member are connected to the plate body; the plate body is provided with an extension section, and the second connecting member is provided on the extension section.

[0017] Preferably, the tail end of the blade is bent to form a bending section, and the bending section is bent downward to form a flange portion, and a positioning groove is provided on the plate body, wherein the flange portion is fixed in the positioning groove when the plate body is assembled on the blade.

[0018] Preferably, the connecting body is a strip rod, and the two ends of the strip rod are formed with a first connecting end and a second connecting end;

[0019] The first connecting end is fixed on the blade; the first connecting member is arranged on the first connecting end, and the second connecting member is arranged on the second connecting end.

[0020] Preferably, a notch is formed on the blade, and the first connecting end is fixed in the notch when connected to the blade.

[0021] Preferably, the device further comprises a shading sheet, and the shading sheet is arranged between the blades and the base.

[0022] Preferably, the device further comprises a driving assembly, the driving assembly comprises a driving magnet and a driving coil, the driving magnet and the driving coil are respectively arranged on the rotating carrier and the base;

[0023] A fixing groove is provided on the rotating carrier, and the driving magnet is arranged in the fixing groove.

[0024] Preferably, a winding carrier is provided on the base, and the driving coil is wound on the winding carrier to form an integrated structure; a magnetic isolation sheet is provided inside the winding carrier.

[0025] Preferably, a card slot is formed on the base, and card protrusions are provided at both ends of the winding carrier, and the card protrusions are assembled in the card slot.

[0026] Preferably, a guide member is provided between the base and the rotating carrier, and the guide member comprises a roller or a ball, and the number of the ball is at least one. Beneficial Effects

[0027] By using a variable aperture camera drive device provided by the utility model, the blade assembly adopts a blade single-point self-rotation structure. The blade, as a follower, has a larger contact area with the rotating carrier than the existing structure, is not easy to deform, and greatly reduces the problem of blades getting stuck in the rotating carrier. In addition, it replaces the traditional blade rotating structure around the axis, avoiding the problem of blade deformation caused by blade jamming and lateral falling.

[0028] In addition, the present application sets a winding carrier on the base, and the driving coil is wound on the winding carrier to form an integrated structure; both ends of the winding carrier are installed on the base through a slot insertion structure, so that the structure is relatively reliable, the size is stable, and the work station is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an exploded schematic diagram of the structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0031] Figure 3 This is a schematic diagram of the installation of the second implementation structure of the guide member of the utility model;

[0032] Figure 4 This is a schematic diagram of the fixed carrier structure of the utility model;

[0033] Figure 5 This is a schematic diagram of the rotating carrier structure of the utility model;

[0034] Figure 6 This is a schematic diagram of the winding carrier structure of the utility model;

[0035] Figure 7 This is a schematic diagram of the assembly structure of the blade and carrier assembly of the utility model;

[0036] Figure 8 This is a schematic structural diagram of a first embodiment of a connecting piece of the utility model;

[0037] Fig. 9 It is a structural schematic diagram of a second embodiment of the connecting piece of the present utility model.

[0038] In the figure: 1, protective shell, 2, fixed carrier, 3, blade, 31, bending section, 32, flanging portion, 4, shading sheet, 5, rotating carrier, 6, base, 7, winding carrier, 8, clamping protrusion, 9, driving coil, 10, connecting hole, 11, fixing groove, 12, strip groove, 13, connecting member, 131, first connecting end, 132, second connecting end, 133, first connecting member, 134, second connecting member, 135, extension section, 136, positioning groove, 137, notch, 138, third connecting member, 14, driving magnet, 15, guide member. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. As long as the effect of the utility model can be exerted, various changes can be made to the implementation scheme.

[0040] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0041] Reference Figure 1-9 A variable aperture imaging drive device according to this embodiment will be described.

[0042] The device comprises a protective shell 1, a base 6, a light shielding sheet 4, a blade assembly, a carrier assembly and a driving assembly.

[0043] The protective shell 1 and the base 6 are buckled together to form a receiving space, and the carrier assembly is arranged in the receiving space. The light shielding sheet 4 is arranged between the blade 3 and the base 6.

[0044] The carrier assembly includes a fixed carrier 2 and a rotating carrier 5 that cooperate with each other, and a strip groove 12 is provided on the rotating carrier 5;

[0045] The blade assembly includes a blade 3 and a connecting member 13, wherein the connecting member 13 is connected to the blade 3, the fixed carrier 2 and the rotating carrier 5;

[0046] In this embodiment, the connecting member 13 includes a connecting body, a first connecting member 133, a second connecting member 134 and a third connecting member 138. The connecting body is fixed to the blade 3; the first connecting member 133 is connected to the connecting hole 10 on the fixed carrier 2; the second connecting member 134 is connected to the strip groove 12 on the rotating carrier 5; the outer wall surface of the second connecting member 134 is formed with a contact surface that contacts the strip groove 12; the third connecting member 138 is connected to the base 6. During the implementation process, when the rotating carrier 5 rotates, the contact surface of the second connecting member 134 slides in the strip groove 12 with the first connecting member 133 and the third connecting member 138 as the axis points to rotate the blade 3.

[0047] When in use, each blade 3 rotates with the second connecting member 134 as the axis. After the driving coil 9 is energized, it generates a Lorentz force with the driving magnet 14, thereby driving the rotating carrier 5 to rotate, thereby driving the blade 3 to rotate, so as to adjust the aperture size.

[0048] The connector in the connector 13 has at least two usage forms, and the two forms of the connector are described in detail herein.

[0049] One form of the connector is as follows: the connector is a plate body fixed on the blade 3 ; the first connector 133 and the third connector 138 are connected to the plate body; an extension section 135 is provided on the plate body, and the second connector 134 is provided on the extension section 135 .

[0050] The tail end of the blade 3 is bent to form a bending section 31 , and the bending section 31 is bent downward to form a flange portion 32 . A positioning groove 136 is provided on the plate body; when the plate body is assembled on the blade 3 , the flange portion 32 is fixed in the positioning groove 136 .

[0051] The second form of the connector is: the connector is a strip rod, with a first connecting end 131 and a second connecting end 132 formed at both ends of the strip rod; the first connecting end 131 is fixed to the blade 3; the first connecting member 133 is arranged on the first connecting end 131, and the second connecting member 134 is arranged on the second connecting end 132.

[0052] A notch 137 is formed on the blade 3 , and the first connecting end 131 is fixed in the notch 137 when connected to the blade 3 .

[0053] The blade assembly adopts a single-point self-rotation structure of blade 3. As a follower, blade 3 has a larger contact area with rotating carrier 5 than the existing structure, and is not easy to deform, which greatly reduces the problem of blade 3 getting stuck in the rotating carrier. In addition, it replaces the traditional blade rotating structure around the axis, avoiding the problem of blade deformation caused by blade jamming and sideways falling.

[0054] The driving assembly in the present application includes a driving magnet 14 and a driving coil 9. The driving magnet 14 is arranged on the rotating carrier 5. The rotating carrier 5 is provided with a fixing groove 11, and the driving magnet 14 is arranged in the fixing groove 11. The driving coil 9 is arranged on the base 6; in the existing structure, most of the driving coils are hollow coils, which are easy to loosen, and an additional glue dispensing station is required to fix the coil. Therefore, in this embodiment, a winding carrier 7 is arranged on the base 6, and the driving coil 9 is wound on the winding carrier 7 to form an integrated structure; during installation, two relatively arranged card slots are opened on the base 6, and card protrusions 8 are provided at both ends of the winding carrier 7. The card protrusions 8 are assembled in the card slots to realize the assembly of the winding carrier 7. The winding carrier 7 adopts a card slot insertion structure, which makes the structure relatively reliable, the size stable, and saves workstations.

[0055] In addition, a magnetic isolation sheet is provided in the winding carrier 7. The magnetic isolation sheet is preset in the winding carrier 7 and functions to gather the magnetic flux lines and increase the electromagnetic force.

[0056] In this embodiment, a guide member 15 is provided between the base 6 and the rotating carrier 5. The guide member 1 has two forms, the first is a roller form, and the second is a ball form, and there is at least one ball. A groove is provided on the base 6, and the guide member 1 is provided in the groove. Among them, the roller is vertically provided in the groove. A plurality of balls are arranged in a row in the groove.

[0057] The device also includes a closed loop component. The closed loop component includes a sensing magnet and a sensor. The sensing magnet is arranged at the bottom of the rotating carrier 5, and the sensor is arranged on a base 6, and the sensing magnet and the sensor are arranged relative to each other. The sensor is used to sense the rotation of the sensing magnet and adjust the size of the aperture accordingly.

[0058] The device also includes an electrical connector, which is disposed in the base 6, and the drive coil 9 is electrically connected to the sensor electrical connector.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable aperture camera driving device, characterized in that: include: Protective case (1); A base (6) and the protective shell (1) are interlocked to form a receiving space; A carrier assembly is arranged in the accommodating space, comprising a fixed carrier (2) and a rotating carrier (5) that cooperate with each other, wherein the rotating carrier (5) is provided with a strip groove (12); A blade assembly comprises a blade (3) and a connecting member (13), wherein the connecting member (13) is connected to the blade (3), a fixed carrier (2) and a rotating carrier (5); the connecting member (13) comprises: A connector fixed to the blade (3); A first connecting member (133) connected to a connecting hole (10) on the fixing carrier (2); A second connecting member (134) is connected to the strip groove (12) on the rotating carrier (5); an outer wall surface of the second connecting member (134) is formed with a contact surface that contacts the strip groove (12); A third connecting member (138) connected to the base (6); When the rotating carrier (5) rotates, the contact surface of the second connecting member (134) slides in the strip groove (12) with the first connecting member (133) and the third connecting member (138) as axis points, causing the blade (3) to rotate.

2. The variable aperture camera driving device according to claim 1, characterized in that: The connecting body is a plate body fixed on the blade (3); the first connecting member (133) and the third connecting member (138) are connected to the plate body; an extension section (135) is provided on the plate body, and the second connecting member (134) is provided on the extension section (135).

3. The variable aperture camera driving device according to claim 2, characterized in that: The tail end of the blade (3) is bent to form a bent section (31), the bent section (31) is bent downward to form a flange portion (32), and a positioning groove (136) is provided on the plate body, wherein the flange portion (32) is fixed in the positioning groove (136) when the plate body is assembled on the blade (3).

4. The variable aperture camera driving device according to claim 1, characterized in that: The connecting body is a strip-shaped rod, and a first connecting end (131) and a second connecting end (132) are formed at two ends of the strip-shaped rod; The first connecting end (131) is fixed on the blade (3); the first connecting member (133) is arranged on the first connecting end (131), and the second connecting member (134) is arranged on the second connecting end (132).

5. The variable aperture camera driving device according to claim 4, characterized in that: The blade (3) is provided with a notch (137), and the first connecting end (131) is fixed in the notch (137) when connected to the blade (3).

6. The variable aperture camera driving device according to claim 1, characterized in that: The device further comprises a light shielding sheet (4), wherein the light shielding sheet (4) is arranged between the blade (3) and the base (6).

7. The variable aperture camera driving device according to claim 1, characterized in that: The device further comprises a driving assembly, the driving assembly comprising a driving magnet (14) and a driving coil (9), the driving magnet (14) and the driving coil (9) being arranged on the rotating carrier (5) and the base (6) respectively; The rotating carrier (5) is provided with a fixing groove (11), and the driving magnet (14) is arranged in the fixing groove (11).

8. The variable aperture camera driving device according to claim 7, characterized in that: A winding carrier (7) is provided on the base, and the driving coil (9) is wound on the winding carrier (7) to form an integrated structure; a magnetic isolation sheet is provided inside the winding carrier (7).

9. The variable aperture camera driving device according to claim 8, characterized in that: The base (6) is provided with a card slot, and both ends of the winding carrier (7) are provided with card protrusions (8), and the card protrusions (8) are assembled in the card slot.

10. The variable aperture camera driving device according to claim 1, characterized in that: A guide member (15) is provided between the base (6) and the rotating carrier, and the guide member (15) comprises a roller or a ball, and the number of the ball is at least one.

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