Aperture device and sliding assembly thereof

Abstract

The utility model provides an aperture device and a sliding assembly thereof, the sliding assembly is used for generating sliding rotating around an axis, and the sliding assembly comprises a first connecting piece, a second connecting piece and a plurality of balls. The first connecting piece is provided with a first surface and a plurality of first containing grooves formed in the first surface. The second connecting piece is provided with a second surface, a plurality of second containing grooves and a plurality of second connecting pieces, wherein the second connecting pieces correspond to the first containing grooves respectively. The balls are arranged in the first containing grooves and the second containing grooves, so that the first surface slides relative to the second surface in the mode of rotating around the axis. The first containing grooves comprise a plurality of first limiting grooves, the second containing grooves comprise a plurality of second limiting grooves corresponding to the first limiting grooves, and the first limiting grooves and the second limiting grooves are each provided with two groove walls which are oppositely arranged and inclined relative to the axis. And at least one ball is arranged in each first limiting groove and each second limiting groove which are correspondingly arranged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical mechanism, and particularly to a diaphragm device and a sliding assembly thereof. BACKGROUND

[0002] The existing automatic focusing optical mechanism mainly utilizes a voice coil motor to make two mutually connected lens barrels and a base relatively move, so that the lens moves relative to the image sensor to achieve focusing. The existing sliding connection structure between the lens barrel and the base is to set two linear tracks between two relatively moving parts, and set a ball between the two linear tracks to facilitate linear movement of the two parts, and the cross section of one of the tracks is set in a V shape to achieve limiting and provide the accuracy of keeping the connection of the parts during movement.

[0003] However, for optical mechanisms used for other functions, such as mechanisms used for opening and closing the diaphragm, since the diameter of the diaphragm is mainly adjusted by the relative rotation of two parts to pull the diaphragm blade to move, how to achieve sliding connection between the two relatively rotating parts that pull the diaphragm blade to move and ensure the position accuracy of the rotation center during rotation is an important development direction of the current optical mechanism design. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide a diaphragm device and a sliding assembly thereof, which is used to achieve accurate positioning sliding connection between two relatively rotating parts.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides a sliding assembly for generating sliding around an axis of rotation, the sliding assembly comprising a first connecting member, a second connecting member, and a plurality of balls. The first connecting member has a first surface and a plurality of first accommodating grooves, the first surface being perpendicular to the axis of rotation, and the plurality of first accommodating grooves being arranged on the first surface. The second connecting member has a second surface and a plurality of second accommodating grooves, the second surface being perpendicular to the axis of rotation and corresponding to the first surface, and the plurality of second accommodating grooves corresponding to the plurality of first accommodating grooves respectively. The plurality of balls are arranged in the plurality of first accommodating grooves and the plurality of second accommodating grooves, so that the first surface relatively slides with respect to the second surface in a manner of rotating around the axis of rotation. The plurality of first accommodating grooves comprise a plurality of first limiting grooves, the plurality of second accommodating grooves comprise a plurality of second limiting grooves, the plurality of first limiting grooves and the plurality of second limiting grooves are arranged correspondingly, and each of the plurality of first limiting grooves and the plurality of second limiting grooves has two groove walls arranged towards each other and inclined with respect to the axis of rotation. At least one ball is arranged in each of the corresponding first limiting grooves and the corresponding second limiting grooves, so that the at least one ball is rollably abutted against the two groove walls of each of the first limiting grooves and the second limiting grooves.

[0006] Optionally, each first limiting slot and each second limiting slot is circular arc structure and the axis passes through the center of the circular arc structure.

[0007] Optionally, each first limiting slot and each second limiting slot has unequal length along the circumferential direction with the axis as the center; each first limiting slot and each second limiting slot has unequal depth along the axial direction.

[0008] Optionally, each first limiting slot and each second limiting slot is provided with a ball.

[0009] Optionally, the plurality of first accommodating slots further comprises at least one first assembly slot, the plurality of second accommodating slots further comprises at least one second assembly slot, the at least one first assembly slot and the at least one second assembly slot are correspondingly provided, the at least one first assembly slot and the at least one second assembly slot both have slot walls oppositely arranged and parallel to the axis, at least one ball is arranged in the at least one first assembly slot and the at least one second assembly slot correspondingly provided, and the distance between the two slot walls of the at least one first assembly slot is greater than the diameter of the ball, and the distance between the two slot walls of the at least one second assembly slot is greater than the diameter of the ball.

[0010] Optionally, the at least one first assembly slot and the at least one second assembly slot are both circular arc structure, and the axis passes through the center of the circular arc structure, the length of the first assembly slot along the circumferential direction is less than the length of the first limiting slot along the circumferential direction, and the length of the second assembly slot along the circumferential direction is less than the length of the second limiting slot along the circumferential direction.

[0011] Optionally, the center of the at least one first assembly slot and the center of the at least one second assembly slot are offset in the direction along the axis.

[0012] Optionally, the at least one first assembly slot and the at least one second assembly slot have unequal length along the circumferential direction with the axis as the center; the at least one first assembly slot and the at least one second assembly slot have unequal depth along the axial direction.

[0013] Optionally, the at least one first limiting slot and the at least one first assembly slot have an angular distance of 180° relative to the axis, and the at least one second limiting slot and the at least one second assembly slot have an angular distance of 180° relative to the axis.

[0014] The application provides an aperture device, which comprises the sliding assembly, a plurality of aperture blades and a driving assembly. The plurality of aperture blades are rotatably arranged between the first assembly and the second assembly, and the plurality of aperture blades are stacked to form an aperture. The driving assembly is arranged between the first assembly and the second assembly, so that the first assembly rotates relative to the second assembly around the axis, and the plurality of aperture blades are moved to change the diameter of the aperture.

[0015] Optionally, the driving structure further comprises a plurality of shaft posts and a plurality of traction pins, the first set of components further comprises a first top surface distanced from the first surface, the second set of components further comprises a second top surface distanced from the second surface, the first top surface is around the second top surface and rotatable relative to the second top surface, the plurality of shaft posts are disposed on the first top surface, the plurality of traction pins are disposed on the second top surface, each aperture blade has a shaft hole and a guide slot, the shaft hole is rotatably connected with the shaft post, and the guide slot is slidably connected with the traction pin.

[0016] Optionally, the first set of components has a ring structure, the first surface and the first top surface are respectively located at opposite ends of the ring structure; the second set of components has a cylindrical structure and a ring flange, the second top surface is located at an axial end of the cylindrical structure, the ring flange is located at another axial end of the cylindrical structure distanced from the second top surface, and the second surface is located at the ring flange.

[0017] Optionally, the second set of components further comprises a plurality of bosses, the plurality of bosses are disposed on the ring flange, a plurality of second accommodating grooves are respectively formed in the plurality of bosses, and the second surface is located at top surfaces of the plurality of bosses.

[0018] Optionally, the first set of components further comprises a plurality of bosses, the plurality of bosses are disposed on the first surface, and each boss is located between two adjacent bosses.

[0019] Optionally, the driving assembly comprises at least one magnet disposed on the first set of components and at least one coil disposed on the second set of components, current flows through the at least one coil, so that the at least one coil and the at least one magnet generate electromagnetic effect, and then the at least one magnet moves relative to the at least one coil.

[0020] As described above, the present application has the following beneficial effects:

[0021] The sliding assembly of the present application is provided with a plurality of first limiting grooves and a plurality of second limiting grooves having two groove walls oppositely arranged and inclined relative to the axis, and at least one ball is arranged in each corresponding first limiting groove and each corresponding second limiting groove, so that when the first set of components rotates and slides relative to the second set of components, the rotation center of the first set of components can be accurately kept at the predetermined axis without deviation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A perspective view of an aperture device according to a first embodiment of the present application.

[0023] Figure 2 A perspective view of an aperture device according to a first embodiment of the present application with a protective cover removed.

[0024] Figure 3 A perspective view of an aperture device according to a first embodiment of the present application. Figure 1 A perspective exploded view of an aperture device according to a first embodiment of the present application.

[0025] Figure 4 another perspective view of the aperture device shown in Figure 1

[0026] Figure 5 another perspective view of the aperture device shown in Figure 1

[0027] Figure 5a another perspective view of the aperture device shown in Figure 1

[0028] Figure 6 another perspective view of the aperture device shown in Figure 1

[0029] Figure 7 another perspective view of the aperture device shown in Figure 1

[0030] component number explanation

[0031] 1: aperture device; 10: sliding assembly; 11: first set of components; 12: second set of components; 12a: cylindrical structure; 12b: annular flange; 12c: boss; 13: ball; 20: aperture blade; 21: shaft hole; 22: guide slot; 30: driving assembly; 31: magnet; 32: coil; 40: traction structure; 41: shaft post; 42: traction pin; 111: first surface; 112: first top surface; 113: first accommodating slot; 113a: first limiting slot; 113a1: slot wall; 113b: first assembling slot; 113b1: slot wall; 114: protrusion; 121: second surface; 122: second accommodating slot; 122a: second limiting slot; 122a1: slot wall; 122b: second assembling slot; 122b1: slot wall; 123: second top surface; A: optical device; B: base; C: protective cover; L: axis. DETAILED DESCRIPTION

[0032] The forgoing detailed description of the application has been presented for the purposes of elucidation and will not limit the application as construed. It is intended to be an example of the various applications to be covered by the application. Many modifications and variations to the illustrative embodiments described herein will be apparent to those skilled in the art in view of the foregoing detailed description. Thus, it is intended that the scope of the application should not be limited by the foregoing detailed description, but should be determined only by reference to the following claims.

[0033] For the purposes of this disclosure, the terms "below," "under," "beneath," "lower," "above," "upper" and the like can be used to describe one component or feature's relationship to another component or feature as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation, for example, dependent on the particular viewpoint. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.​​​​​

[0034] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , wherein Figure 1 is a perspective view of the aperture device of the first embodiment of the present application, Figure 2 is a perspective view of the aperture device of the first embodiment of the present application removing the protective cover, Figure 3 is a perspective exploded view of the aperture device of Figure 1 , and Figure 4 is a perspective exploded view of the aperture device of Figure 1 from another angle. As shown in the figure, the aperture device 1 of the present embodiment is arranged on the base B of the optical device A, the base B is provided with an image sensor, the aperture device 1 is located in front of the light receiving side of the image sensor, the optical device A has a protective cover C covering the aperture device 1. The aperture device 1 comprises a sliding assembly 10, a plurality of aperture blades 20 and a driving assembly 30. The driving assembly 30 drives the sliding assembly 10 to rotate relative to the axis L to produce relative sliding, so as to move the plurality of aperture blades 20 to change the aperture diameter. The axis L of the present embodiment can be coincident with the optical axis of the optical device.

[0036] The sliding assembly 10 of the present embodiment comprises a first set of components 11, a second set of components 12 and a plurality of balls 13. The second set of components 12 is fixed to the base B of the optical device, the first set of components 11 is rotatably combined with the second set of components 12, and the plurality of balls 13 is rollably arranged between the first set of components 11 and the second set of components 12, so that the first set of components 11 and the second set of components 12 can be relatively rotatably slidably connected.

[0037] The first set of members 11 has a ring structure, and the first set of members 11 has a first surface 111, a first top surface 112, and a plurality of first receiving grooves 113. The first surface 111 and the first top surface 112 are two axial end surfaces of the ring structure, and the first surface 111 and the first top surface 112 are perpendicular to the axis L. The first surface 111 is arranged at one end of the first set of members 11 close to the second set of members 12 and the base B of the optical device, and the first top surface 112 is arranged at one end of the first set of members 11 away from the second set of members 12 and the base B of the optical device. The plurality of first receiving grooves 113 are arranged on the first surface 111. In this embodiment, the plurality of first receiving grooves 113 are formed on the first surface 111 at equal angular distances from each other.

[0038] The second set of members 12 has a cylindrical structure 12a and a ring-shaped flange 12b arranged at one end of the cylindrical structure 12a close to the base B and extending radially. The second set of members 12 also has a plurality of bosses 12c arranged on the surface of the ring-shaped flange 12b away from the base B and adjacent to the outer circumferential surface of the cylindrical structure 12a. The second set of members 12 also has a second surface 121, a plurality of second receiving grooves 122, and a second top surface 123. The top surface of the plurality of bosses 12c is the second surface 121, the plurality of second receiving grooves 122 are arranged on the top surface of the plurality of bosses 12c, i.e. the plurality of second receiving grooves 122 are arranged on the second surface 121, and the second receiving grooves 122 correspond to the first receiving grooves 113 and have a symmetrical shape with the first receiving grooves 113. The axial end surface of the cylindrical structure 12a away from the base B is the second top surface 123, and the first top surface 112 surrounds the second top surface 123.

[0039] The first set of members 11 also has a plurality of protrusions 114 arranged on the first surface 111 between two adjacent first receiving grooves 113, so that when the first set of members 11 is combined with the second set of members 12, each protrusion 114 is located between two adjacent bosses 12c.

[0040] The plurality of balls 13 are arranged in the plurality of first receiving grooves 113 and the plurality of second receiving grooves 122, so that the first surface 111 slides relative to the second surface in a manner of rotating around the axis L. Each first receiving groove 113 corresponds to each second receiving groove 122.

[0041] Please refer to Figure 5 , Figure 5a , Figure 6 and Figure 7 , wherein Figure 5 is Figure 1 a sectional view along the A-A line, Figure 5a is Figure 1 another sectional view of the aperture device of Figure 6 , Figure 1A cross-sectional view along the line B-B, Figure 7 As Figure 1 A cross-sectional view along the line C-C. As shown, the plurality of first accommodating grooves 113 of the present embodiment includes two first limiting grooves 113a and two first assembling grooves 113b. The plurality of second accommodating grooves 122 includes two second limiting grooves 122a and two second assembling grooves 122b, the two first limiting grooves 113a and the two second limiting grooves 122a are respectively correspondingly arranged, and the two first assembling grooves 113b and the two second assembling grooves 122b are respectively correspondingly arranged. The two first limiting grooves 113a and the two first assembling grooves 113b are both circular arc structures, and the axis L extends through the center of the circular arc structure. Similarly, the two second limiting grooves 122a and the two second assembling grooves 122b are also circular arc structures, and the axis L extends through the center of the circular arc structure.

[0042] The first limiting groove 113a and the second limiting groove 122a each have two groove walls arranged towards each other and inclined with respect to the axis L, and a ball 13 is arranged in the correspondingly arranged first limiting groove 113a and second limiting groove 122a, so that the ball 13 can be rollingly abutted against the two groove walls 113a1 of the first limiting groove 113a, and the ball 13 can be rollingly abutted against the two groove walls 122a1 of the second limiting groove 122a, so that the ball 13 is limited in the radial direction with respect to the first limiting groove 113a and the second limiting groove 122a. However, the length of the first limiting groove 113a and the second limiting groove 122a in the circumferential direction with the axis L as the center is greater than the diameter of the ball 13, that is, the first limiting groove 113a and the second limiting groove 122a have a certain interval in the circumferential direction with respect to the ball 13, so that the first limiting groove 113a and the second limiting groove 122a can move relatively in the circumferential direction. In this way, when the first assembly 11 and the second assembly 12 relatively rotate and slide, the center of the first assembly 11 can be kept on the axis L or offset within a permissible range, thereby providing the required accuracy for the operation of the aperture mechanism.

[0043] As Figure 5a shown, the length of the first limiting groove 113a and the second limiting groove 122a in the circumferential direction with the axis L as the center is not equal, and the length of the first limiting groove 113a in the circumferential direction of the present embodiment is greater than the length of the second limiting groove 122a in the circumferential direction. Figure 6 As

[0044] In this embodiment, multiple first limiting grooves 113a and second limiting grooves 122a are arranged corresponding to each other, thereby providing radial limiting for the sliding component 10 at multiple positions, which can improve the accuracy of assembly and aperture mechanism operation.

[0045] Each first assembly slot 113b has opposing slot walls 113b1 parallel to the axis L, and each second assembly slot 122b also has opposing slot walls 122b1 parallel to the axis L. In this embodiment, each first assembly slot 113b and each second assembly slot 122b is provided with a ball bearing 13, and the distance between the two slot walls 113b1 of the first assembly slot 113b is greater than the diameter of the ball bearing 13, and the distance between the two slot walls 122b1 of the second assembly slot 122b is greater than the diameter of the ball bearing 13. Thus, the sliding connection of each first assembly slot 113b and each second assembly slot 122b and the ball bearing 13 can provide an allowable amount of assembly tolerance. In addition, in this embodiment, the line connecting the center of the first assembly groove 113b and the center of the second assembly groove 122b intersects the axis L, that is, the first assembly groove 113b and the second assembly groove 122b are offset. Thus, the distance between the groove wall 113b1 of the first assembly groove 113b and the groove wall 122b1 of the opposite side of the second assembly groove 122b is slightly larger than the diameter of the ball 13, thereby providing an allowable amount for assembly tolerance.

[0046] Thus, in this embodiment, the first set of connectors 11 and the second set of connectors 12 limit the first limiting groove 113a and the second limiting groove 122a in the radial direction through the ball bearing 13, thereby providing the accuracy required for the operation of the aperture device. At the same time, the sliding connection between each first assembly groove 113b and each second assembly groove 122b and the ball bearing 13 can provide the allowable amount of assembly tolerance, which can maintain the accuracy relative to the center of the circle during rotation, and will not be over-positioned, thus making assembly difficult.

[0047] The ball bearing 13 disposed at the center of the first assembly groove 113b and in the second assembly groove 122b has the same diameter as the ball bearing 13 disposed in the first limiting groove 113a and the second limiting groove 122a.

[0048] In this embodiment, the length of the first assembly groove 113b along the circumferential direction is the same as the length of the first limiting groove 113a along the circumferential direction, and the length of the second assembly groove 122b along the circumferential direction is the same as the length of the second limiting groove 122a along the circumferential direction.

[0049] In addition, such as Figure 5a As shown, the lengths of the first assembly groove 113b and the second assembly groove 122b along the circumferential direction with axis L as the center are not equal. In this embodiment, the length of the first assembly groove 113b along the circumferential direction is greater than the length of the second assembly groove 122b along the circumferential direction.Figure 6 As shown, the depth of the first assembly groove 113b along the axis L is not equal to the depth of the second assembly groove 122b. The depth of the first assembly groove 113b of the present embodiment is smaller than the depth of the second assembly groove 122b.

[0050] The first limiting groove 113a of the present embodiment has an angular distance of 180° with respect to the axis from one of the first assembly grooves 113b, and the second limiting groove 122a has an angular distance of 180° with respect to the axis from one of the second assembly grooves 122b.

[0051] The plurality of aperture blades 20 are rotatably arranged on the first set of members 11 and the second set of members 12, and the plurality of aperture blades 20 are stacked on each other to form an aperture. The aperture device 1 further comprises a pulling structure 40, which comprises a plurality of shaft columns 41 arranged on the first top surface 112 and a plurality of pulling pins 42 arranged on the second top surface 123, and each aperture blade 20 has a shaft hole 21 rotatably connected with the shaft column 41 and a guide slot 22 slidably connected with the pulling pin 42. When the first set of members 11 rotates relative to the second set of members 12, the first top surface 112 rotates relative to the second top surface 123, so that the aperture blade 20 rotates around the shaft column 41 due to the pulling of the pulling pin 42 on the guide slot 22, thereby enlarging or reducing the diameter of the aperture.

[0052] The driving assembly 30 comprises a pair of magnets 31 arranged on the first set of members 11 and a pair of coils 32 arranged on the second set of members 12. Current flows through the coils 32, so that the coils 32 and the magnets 31 generate electromagnetic effect, thereby causing the magnets 31 to move relative to the coils 32, causing the first set of members 11 to rotate relative to the second set of members 12 around the axis L, and further causing the plurality of aperture blades 20 to move to change the diameter of the aperture.

[0053] Although the plurality of first accommodating grooves 113 of the present embodiment comprises two first limiting grooves 113a, and the plurality of second accommodating grooves 122 comprises two second limiting grooves 122a, the present application is not limited thereto, and in other embodiments, the plurality of first accommodating grooves can comprise three first limiting grooves or all the plurality of first accommodating grooves are first limiting grooves, and the plurality of second accommodating grooves can comprise three second limiting grooves or all the plurality of second accommodating grooves are second limiting grooves.

[0054] In addition, although the present embodiment is provided with one ball 13 in the corresponding first limiting groove 113a and the second limiting groove 122a, the present application is not limited thereto, and in other embodiments, a plurality of balls 13 can also be provided in the corresponding first limiting groove 113a and the second limiting groove 122a.

[0055] The sliding assembly of the present application is provided with a first limiting slot and a second limiting slot having two slot walls oppositely arranged and inclined relative to the axis, and a plurality of balls arranged in the corresponding first limiting slot and second limiting slot, so that when the first set of components rotates and slides relative to the second set of components, the rotation center of the first set of components can be accurately kept at the predetermined axis without deviation.

[0056] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present application should be covered by the claims of the present application.

Claims

1. A sliding assembly for generating a sliding rotation about an axis, characterized in that, The application relates to a rotating device, comprising: a first set of components, having a first surface perpendicular to the axis and a plurality of first accommodating grooves arranged on the first surface; a second set of components, having a second surface corresponding to the first surface and perpendicular to the axis, and a plurality of second accommodating grooves corresponding to the first accommodating grooves; a plurality of balls arranged in the first accommodating grooves and the second accommodating grooves, so that the first surface can slide relative to the second surface in a rotating manner around the axis; wherein the first accommodating grooves comprise a plurality of first limiting grooves, the second accommodating grooves comprise a plurality of second limiting grooves, the first limiting grooves and the second limiting grooves are arranged correspondingly, and each of the first limiting grooves and the second limiting grooves has two groove walls arranged towards each other and inclined relative to the axis; wherein at least one ball is arranged in each of the corresponding first limiting grooves and second limiting grooves, so that the at least one ball can rollingly abut the two groove walls of each of the first limiting grooves and the second limiting grooves.

2. The slide assembly of claim 1, wherein, Each of the first limiting grooves and the second limiting grooves is in a circular arc structure, and the axis passes through the center of the circular arc structure.

3. The slide assembly of claim 1, wherein, The length of each of the first limiting grooves and the second limiting grooves in the circumferential direction with the axis as the center is not equal; the depth of each of the first limiting grooves and the second limiting grooves in the axial direction is not equal.

4. The slide assembly of claim 1, wherein, One ball is arranged in each of the first limiting grooves and the second limiting grooves.

5. The slide assembly of claim 1, wherein, The first accommodating grooves further comprise at least one first assembly groove, the second accommodating grooves further comprise at least one second assembly groove, the at least one first assembly groove and the at least one second assembly groove are arranged correspondingly, the at least one first assembly groove and the at least one second assembly groove both have groove walls arranged towards each other and parallel to the axis, at least one ball is arranged in the at least one first assembly groove and the at least one second assembly groove arranged correspondingly, the distance between the two groove walls of the at least one first assembly groove is greater than the diameter of the ball, and the distance between the two groove walls of the at least one second assembly groove is greater than the diameter of the ball.

6. The slide assembly of claim 5, wherein, The at least one first assembly groove and the at least one second assembly groove are both in a circular arc structure, the axis passes through the center of the circular arc structure, the length of the first assembly groove in the circumferential direction is less than the length of the first limiting groove in the circumferential direction, and the length of the second assembly groove in the circumferential direction is less than the length of the second limiting groove in the circumferential direction.

7. The slide assembly of claim 5, wherein, The length of the at least one first assembly groove and the at least one second assembly groove in the circumferential direction with the axis as the center is not equal; the depth of the at least one first assembly groove and the at least one second assembly groove in the axial direction is not equal.

8. The slide assembly of claim 5, wherein, A center of at least one of the first assembly slots is offset from a center of a corresponding at least one of the second assembly slots in a direction along the axis.

9. The slide assembly of claim 5, wherein, At least one of the first limiting slots has an angular distance of 180° from at least one of the first assembly slots with respect to the axis, and at least one of the second limiting slots has an angular distance of 180° from at least one of the second assembly slots with respect to the axis.

10. An aperture device, characterized by The application further comprises a traction structure comprising a plurality of shaft posts and a plurality of traction pins, the first assembly further has a first top surface distal to the first surface, the second assembly further has a second top surface distal to the second surface, the first top surface surrounds the second top surface and is rotatable about the axis relative to the second top surface, the plurality of shaft posts are disposed on the first top surface, the plurality of traction pins are disposed on the second top surface, each of the aperture blades has a shaft hole and a guide slot, the shaft hole rotatably engages with the shaft post, and the guide slot slidably engages with the traction pin. The first assembly has a ring structure, the first surface and the first top surface are located at opposite ends of the ring structure, respectively; the second assembly has a cylindrical structure and a ring flange, the second top surface is located at an axial end of the cylindrical structure, the ring flange is located at another axial end of the cylindrical structure distal to the second top surface, and the second surface is located at the ring flange. The second assembly further has a plurality of bosses, the plurality of bosses are disposed on the ring flange, the plurality of second accommodating slots are formed in the plurality of bosses, respectively, and the second surface is located at top surfaces of the plurality of bosses. The first assembly further has a plurality of protrusions, the plurality of protrusions are disposed on the first surface, and each of the protrusions is located between two adjacent bosses.

11. The aperture device of claim 10, wherein, The drive assembly comprises at least one magnet disposed on the first assembly and at least one coil disposed on the second assembly, a current flows through the at least one coil, such that the at least one coil and the at least one magnet generate an electromagnetic effect, thereby causing the at least one magnet to move relative to the at least one coil.

12. The aperture device of claim 11, wherein, ​ 13. The aperture device of claim 12, wherein, ​ 14. The aperture device of claim 13, wherein, ​ 15. The aperture device of claim 10, wherein, ​

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