Aperture device and sliding assembly thereof

Abstract

The invention 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 mechanisms, and in particular to an aperture device and a sliding component thereof. Background Art

[0002] The existing auto-focus optical mechanism mainly uses a voice coil motor to make two mutually connected lens barrels and bases move relative to each other, so that the lens moves relative to the image sensor to achieve the focusing effect. The existing sliding assembly structure between the lens barrel and the base is to set two linear tracks between the two relatively moving parts, and set a ball between the two linear tracks to facilitate the linear movement of the two parts. In addition, by setting the cross section of one of the tracks into a V shape, it can achieve limit positioning and provide the accuracy of the assembly of the parts when moving.

[0003] However, for optical mechanisms used for other functions, such as mechanisms used to open and close the aperture, since the relative rotation of two components is mainly used to pull the aperture blades to move and adjust the aperture diameter, how to achieve a sliding connection between the two relatively rotating components that pull the aperture blades to move and ensure the position accuracy of the rotation center during rotation has become an important development direction in the current optical mechanism design. Summary of the invention

[0004] The purpose of the present application is to provide an aperture device and a sliding assembly thereof, which are used to achieve a precisely positioned 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 movement rotating around an axis, the sliding assembly comprising a first assembly, a second assembly, and a plurality of balls. The first assembly has a first surface and a plurality of first accommodating grooves, the first surface is perpendicular to the axis, and the plurality of first accommodating grooves are arranged on the first surface. The second assembly has a second surface and a plurality of second accommodating grooves, the second surface is perpendicular to the axis and corresponds to the first surface, and the plurality of second accommodating grooves are arranged correspondingly 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 slides relative to the second surface in a manner rotating around the axis. The plurality of first accommodating grooves include a plurality of first limiting grooves, and the plurality of second accommodating grooves include a plurality of second limiting grooves, the plurality of first limiting grooves and the plurality of second limiting grooves are arranged correspondingly respectively, and the plurality of first limiting grooves and the plurality of second limiting grooves each have two groove walls arranged facing each other and inclined relative to the axis. At least one ball is arranged in each corresponding first limiting groove and each second limiting groove, so that the at least one ball can rollably abut against two groove walls of each first limiting groove and two groove walls of each second limiting groove.

[0006] Optionally, each first limiting groove and each second limiting groove is an arc-shaped structure, and the axis passes through the center of the arc-shaped structure.

[0007] Optionally, the lengths of each first limiting groove and each second limiting groove along the circumferential direction with the axis as the center are not equal; the depths of each first limiting groove and each second limiting groove along the axial direction are not equal.

[0008] Optionally, a ball is disposed in each first limiting groove and each second limiting groove.

[0009] Optionally, the multiple first accommodating grooves also include at least one first assembly groove, the multiple second accommodating grooves also include at least one second assembly groove, at least one first assembly groove is arranged corresponding to at least one second assembly groove, at least one first assembly groove and at least one second assembly groove have groove walls arranged opposite to each other and parallel to the axis, at least one ball is arranged in at least one first assembly groove and at least one second assembly groove that are arranged correspondingly, and the spacing between the two groove walls of at least one first assembly groove is greater than the diameter of the ball, and the spacing between the two groove walls of at least one second assembly groove is greater than the diameter of the ball.

[0010] Optionally, at least one first assembly groove and at least one second assembly groove are both arc-shaped structures, and the axis passes through the center of the arc-shaped structure. The length of the first assembly groove along the circumferential direction is smaller than the length of the first limit groove along the circumferential direction, and the length of the second assembly groove along the circumferential direction is smaller than the length of the second limit groove along the circumferential direction.

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

[0012] Optionally, the lengths of at least one first assembly groove and at least one second assembly groove along the circumferential direction with the axis as the center are not equal; the depths of at least one first assembly groove and at least one second assembly groove along the axial direction are not equal.

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

[0014] The present application provides an aperture device, which includes the aforementioned sliding assembly, a plurality of aperture blades and a driving assembly. The plurality of aperture blades are rotatably arranged on a first assembly member and a second assembly member, and the plurality of aperture blades are stacked on each other to form an aperture. The driving assembly is arranged on the first assembly member and the second assembly member, so that the first assembly member rotates relative to the second assembly member around an axis, and further the plurality of aperture blades move to change the diameter of the aperture.

[0015] Optionally, it also includes a traction structure, which includes a plurality of shaft columns and a plurality of traction pins. The first assembly also has a first top surface away from the first surface, and the second assembly also has a second top surface away from the second surface. The first top surface surrounds the second top surface and can rotate around the axis relative to the second top surface. The plurality of shaft columns are arranged on the first top surface, and the plurality of traction pins are arranged on the second top surface. Each aperture blade has an axial hole and a guide groove. The axial hole is rotatably assembled with the shaft column, and the guide groove is slidably assembled with the traction pin.

[0016] Optionally, the first assembly has an annular structure, and the first surface and the first top surface are respectively located at opposite ends of the annular structure; the second assembly has a cylindrical structure and an annular flange, the second top surface is located at the axial end of the cylindrical structure, the annular flange is located at the other axial end of the cylindrical structure away from the second top surface, and the second surface is located at the annular flange.

[0017] Optionally, the second assembly component further has a plurality of bosses, the plurality of bosses are disposed on the annular flange, the plurality of second accommodating grooves are respectively formed on the plurality of bosses, and the second surface is located on the top surfaces of the plurality of bosses.

[0018] Optionally, the first assembly component further has a plurality of protrusions, the plurality of protrusions are arranged on the first surface, and each protrusion is located between two adjacent bosses.

[0019] Optionally, the driving component includes at least one magnet arranged on the first assembly component and at least one coil arranged on the second assembly component. Current flows through the at least one coil, so that the at least one coil and the at least one magnet produce an electromagnetic effect, thereby causing the at least one magnet to move 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 limit grooves and a plurality of second limit grooves having two groove walls that are arranged opposite to each other and inclined relative to the axis, and at least one ball is arranged in each corresponding first limit groove and each second limit groove, so that when the first assembly part rotates and slides relative to the second assembly part, the rotation center of the first assembly part can be accurately maintained on the predetermined axis without deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a three-dimensional view of the aperture device according to the first embodiment of the present application.

[0023] Figure 2 The figure shows a three-dimensional view of the aperture device of the first embodiment of the present application with the protective cover removed.

[0024] Figure 3 Display as Figure 1 Exploded perspective view of the aperture device.

[0025] Figure 4 Display as Figure 1 A three-dimensional exploded view of the aperture device from another perspective.

[0026] Figure 5 Display as Figure 1 Section view along line AA.

[0027] Figure 5a Display as Figure 1 Another cross-sectional view of the aperture device.

[0028] Figure 6 Display as Figure 1 Section view along line BB.

[0029] Figure 7 Display as Figure 1 Cross-sectional view along line CC.

[0030] Component number description

[0031] 1: aperture device; 10: sliding assembly; 11: first assembly; 12: second assembly; 12a: cylindrical structure; 12b: annular flange; 12c: boss; 13: ball bearing; 20: aperture blade; 21: shaft hole; 22: guide groove; 30: driving assembly; 31: magnet; 32: coil; 40: traction structure; 41: shaft column; 42: traction pin; 111: first surface; 112: first top surface; 11 3: first receiving groove; 113a: first limiting groove; 113a1: groove wall; 113b: first assembly groove; 113b1: groove wall; 114: protrusion; 121: second surface; 122: second receiving groove; 122a: second limiting groove; 122a1: groove wall; 122b: second assembly groove; 122b1: groove wall; 123: second top surface; A: optical device; B: base; C: protective cover; L: axis. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application.

[0033] For convenience of description, spatially relative terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one component or feature shown in the drawings to other components or features. It will be understood that these spatially relative terms are intended to encompass other orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in Figure 1 is a three-dimensional diagram of the aperture device according to the first embodiment of the present application, Figure 2 is a three-dimensional diagram of the aperture device of the first embodiment of the present application with the protective cover removed, Figure 3 yes Figure 1 3D exploded view of the aperture device. Figure 4 yes Figure 1 The aperture device 1 of the embodiment is a three-dimensional exploded view from another perspective. As shown in the figure, the aperture device 1 of the 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, and the optical device A has a protective cover C, and the protective cover C covers the aperture device 1. The aperture device 1 includes 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 generate relative sliding, so that the plurality of aperture blades 20 move to change the aperture diameter. The axis L of the embodiment can coincide with the optical axis of the optical device.

[0036] The sliding assembly 10 of this embodiment includes a first assembly member 11, a second assembly member 12, and a plurality of balls 13. The second assembly member 12 is fixed to the base B of the optical device, the first assembly member 11 is rotatably coupled to the second assembly member 12, and the plurality of balls 13 are rollably disposed between the first assembly member 11 and the second assembly member 12, so that the first assembly member 11 and the second assembly member 12 can be relatively rotatably slidably assembled.

[0037] The first assembly member 11 has an annular structure, and the first assembly member 11 has a first surface 111, a first top surface 112 and a plurality of first accommodating grooves 113. The first surface 111 and the first top surface 112 are two axial end surfaces of the annular structure, respectively, and the first surface 111 and the first top surface 112 are perpendicular to the axis L. The first surface 111 is disposed at one end of the first assembly member 11 close to the second assembly member 12 and the base B of the optical device, and the first top surface 112 is disposed at one end of the first assembly member 11 away from the second assembly member 12 and the base B of the optical device. The plurality of first accommodating grooves 113 are disposed on the first surface 111. The plurality of first accommodating grooves 113 of the present embodiment are formed on the first surface 111 in a manner of being spaced at equal angular distances from each other.

[0038] The second assembly 12 has a cylindrical structure 12a and an annular flange 12b. The annular flange 12b is arranged at one end of the cylindrical structure 12a close to the base B and extends radially. The second assembly 12 also has a plurality of bosses 12c. The plurality of bosses 12c are arranged on the surface of the annular flange 12b away from the base B and adjacent to the outer peripheral surface of the cylindrical structure 12a. The second assembly 12 also has a second surface 121, a plurality of second accommodating grooves 122 and a second top surface 123. The top surfaces of the plurality of bosses 12c are the second surface 121. The plurality of second accommodating grooves 122 are respectively arranged on the top surfaces of the plurality of bosses 12c, that is, the plurality of second accommodating grooves 122 are arranged on the second surface 121. The second accommodating grooves 122 correspond to the first accommodating grooves 113 and have a symmetrical shape with the first accommodating grooves 113. The axial end surface of the cylindrical structure 12a away from the base B is the second top surface 123. The first top surface 112 surrounds the second top surface 123.

[0039] The first assembly member 11 further has a plurality of protrusions 114 disposed on the first surface 111 and located between two adjacent first receiving grooves 113 , so that when the first assembly member 11 is assembled with the second assembly member 12 , each protrusion 114 is located between two adjacent bosses 12 c.

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

[0041] Please also read Figure 5 , Figure 5a , Figure 6 and Figure 7 ,in Figure 5 for Figure 1 Section view along line AA, Figure 5a for Figure 1 Another cross-sectional view of the aperture device, Figure 6 for Figure 1Sectional view along line BB, Figure 7 for Figure 1 Cross-sectional view along line CC. As shown in the figure, the multiple first accommodating grooves 113 of the present embodiment include two first limiting grooves 113a and two first assembly grooves 113b. The multiple second accommodating grooves 122 include two second limiting grooves 122a and two second assembly grooves 122b, the two first limiting grooves 113a and the two second limiting grooves 122a are respectively arranged correspondingly, and the two first assembly grooves 113b and the two second assembly grooves 122b are respectively arranged correspondingly. The two first limiting grooves 113a and the two first assembly grooves 113b are both arc-shaped structures, and the axis L extends through the center of the arc-shaped structure. Similarly, the two second limiting grooves 122a and the two second assembly grooves 122b are also arc-shaped structures, and the axis L extends through the center of the arc-shaped structure.

[0042] The first limiting groove 113a and the second limiting groove 122a each have two groove walls that are disposed opposite to each other and inclined relative to the axis L. A ball 13 is disposed in the corresponding first limiting groove 113a and the second limiting groove 122a, so that the ball 13 can rollably abut against the two groove walls 113a1 of the first limiting groove 113a, and the ball 13 can rollably abut 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 predetermined spacing with respect to the ball 13 in the circumferential direction, so that the first limiting groove 113a and the second limiting groove 122a can produce relative movement along the circumferential direction. In this way, when the first assembling member 11 and the second assembling member 12 rotate and slide relative to each other, the center of the first assembling member 11 can be kept on the axis L or the offset is within an allowable range, thereby providing the accuracy required for the operation of the aperture mechanism.

[0043] like Figure 5a As shown, the lengths of the first limiting groove 113a and the second limiting groove 122a along the circumferential direction with the axis L as the center are not equal. In this embodiment, the length of the first limiting groove 113a along the circumferential direction is greater than the length of the second limiting groove 122a along the circumferential direction. Figure 6 As shown, the depths of the first limiting groove 113a and the second limiting groove 122a along the axis L are not equal. In this embodiment, the depth of the first limiting groove 113a is less than the depth of the second limiting groove 122a.

[0044] In this embodiment, a plurality of first limiting grooves 113a and second limiting grooves 122a are arranged corresponding to each other, so as to provide radial limiting for the sliding assembly 10 at multiple positions, thereby improving the accuracy of assembly and operation of the aperture mechanism.

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

[0046] In this way, the first assembly component 11 and the second assembly component 12 of this embodiment limit the first limiting groove 113a and the second limiting groove 122a in the radial direction through the ball 13, thereby providing the accuracy required for the operation of the aperture device. At the same time, the corresponding sliding assembly of each first assembly groove 113b and each second assembly groove 122b and the ball 13 can provide an allowable amount of assembly tolerance, which can not only maintain the accuracy relative to the center of the circle during rotation, but also avoid over-positioning and causing difficulty in assembly.

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

[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, if Figure 5a As shown, the lengths of the first assembly groove 113b and the second assembly groove 122b along the circumferential direction with the 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 depths of the first assembly groove 113b and the second assembly groove 122b along the axis L are not equal. In this embodiment, the depth of the first assembly groove 113b is less than the depth of the second assembly groove 122b.

[0050] In this embodiment, the first limiting groove 113a and one of the first assembling grooves 113b have an angular distance of 180° relative to the axis, and the second limiting groove 122a and one of the second assembling grooves 122b have an angular distance of 180° relative to the axis.

[0051] A plurality of aperture blades 20 are rotatably disposed on the first assembly member 11 and the second assembly member 12, and the plurality of aperture blades 20 are stacked on each other to form an aperture. The aperture device 1 further includes a traction structure 40, which includes a plurality of shaft columns 41 and a plurality of traction pins 42. The plurality of shaft columns 41 are disposed on the first top surface 112, and the plurality of traction pins 42 are disposed on the second top surface 123. Each aperture blade 20 has an axial hole 21 and a guide groove 22. The axial hole 21 is rotatably assembled with the shaft column 41, and the guide groove 22 is slidably assembled with the traction pin 42. When the first assembly member 11 rotates relative to the second assembly member 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 traction of the traction pin 42 in its guide groove 22, thereby enlarging or reducing the diameter of the aperture.

[0052] The driving assembly 30 includes a pair of magnets 31 disposed on the first assembly component 11 and a pair of coils 32 disposed on the second assembly component 12. Current flows through the coils 32, so that the coils 32 and the magnets 31 generate an electromagnetic effect, thereby causing the magnets 31 to move relative to the coils 32, so that the first assembly component 11 rotates relative to the second assembly component 12 around the axis L, and thereby causing the multiple aperture blades 20 to move to change the diameter of the aperture.

[0053] Although the multiple first accommodating grooves 113 in this embodiment include two first limiting grooves 113a, and the multiple second accommodating grooves 122 include two second limiting grooves 122a, the present application is not limited to this. In other embodiments, the multiple first accommodating grooves may also include three first limiting grooves or the multiple first accommodating grooves may all be first limiting grooves, and the multiple second accommodating grooves may also include three second limiting grooves or the multiple second accommodating grooves may all be second limiting grooves.

[0054] In addition, although one ball 13 is set in the corresponding first limiting groove 113a and the second limiting groove 122a in this embodiment, the present application is not limited to this. In other embodiments, multiple balls 13 can also be set 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 limit groove and a second limit groove having two groove walls that are relatively arranged and inclined relative to the axis, and a plurality of balls are arranged in the corresponding first limit groove and the second limit groove, so that when the first assembly part rotates and slides relative to the second assembly part, the rotation center of the first assembly part can be accurately maintained on the predetermined axis without deviation.

[0056] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A sliding assembly for generating a sliding motion rotating about an axis, characterized in that: include: A first assembly component has a first surface and a plurality of first containing grooves, wherein the first surface is perpendicular to the axis, and the plurality of first containing grooves are arranged on the first surface; A second assembly member having a second surface and a plurality of second accommodating grooves, wherein the second surface is perpendicular to the axis and corresponds to the first surface, and the plurality of second accommodating grooves are respectively arranged corresponding to the plurality of first accommodating grooves; A plurality of balls are disposed in the plurality of first receiving grooves and the plurality of second receiving grooves, so that the first surface slides relative to the second surface in a manner of rotating around the axis; The plurality of first accommodating grooves include a plurality of first limiting grooves, the plurality of second accommodating grooves include a plurality of second limiting grooves, the plurality of first limiting grooves and the plurality of second limiting grooves are respectively arranged correspondingly, and the plurality of first limiting grooves and the plurality of second limiting grooves each have two groove walls arranged facing each other and inclined relative to the axis; At least one ball is arranged in each of the first limiting grooves and each of the second limiting grooves, so that at least one ball can rollably abut against the two groove walls of each of the first limiting grooves and the two groove walls of each of the second limiting grooves.

2. The sliding assembly according to claim 1, characterized in that: Each of the first limiting grooves and each of the second limiting grooves is an arc-shaped structure, and the axis passes through the center of the arc-shaped structure.

3. The sliding assembly according to claim 1, characterized in that: The lengths of each of the first limiting grooves and each of the second limiting grooves along the circumferential direction with the axis as the center are not equal; the depths of each of the first limiting grooves and each of the second limiting grooves along the axial direction are not equal.

4. The sliding assembly according to claim 1, characterized in that: A ball is disposed in each of the first limiting grooves and each of the second limiting grooves.

5. The sliding assembly according to claim 1, characterized in that: The multiple first accommodating grooves also include at least one first assembly groove, and the multiple second accommodating grooves also include at least one second assembly groove. At least one first assembly groove is correspondingly arranged with at least one second assembly groove. At least one first assembly groove and at least one second assembly groove have groove walls that are arranged opposite to each other and parallel to the axis. At least one ball is arranged in the corresponding at least one first assembly groove and at least one second assembly groove, and the distance between the two groove walls of at least one first assembly groove is greater than the diameter of the ball, and the distance between the two groove walls of at least one second assembly groove is greater than the diameter of the ball.

6. The sliding assembly according to claim 5, characterized in that: At least one of the first assembly grooves and at least one of the second assembly grooves are arc-shaped structures, and the axis passes through the center of the arc-shaped structure. The length of the first assembly groove along the circumferential direction is smaller than the length of the first limit groove along the circumferential direction, and the length of the second assembly groove along the circumferential direction is smaller than the length of the second limit groove along the circumferential direction.

7. The sliding assembly according to claim 5, characterized in that: The lengths of at least one of the first assembly grooves and at least one of the second assembly grooves along the circumferential direction with the axis as the center are not equal; the depths of at least one of the first assembly grooves and at least one of the second assembly grooves along the axial direction are not equal.

8. The sliding assembly according to claim 5, characterized in that: The center of at least one of the first assembly grooves and the center of at least one of the corresponding second assembly grooves are offset in the direction along the axis.

9. The sliding assembly according to claim 5, characterized in that: At least one of the first limiting grooves and at least one of the first assembling grooves has an angular distance of 180° relative to the axis, and at least one of the second limiting grooves and at least one of the second assembling grooves has an angular distance of 180° relative to the axis.

10. An aperture device, characterized in that: include: The sliding assembly according to any one of claims 1 to 9; A plurality of aperture blades are rotatably disposed on the first assembly member and the second assembly member, and the plurality of aperture blades are stacked on each other to form an aperture; The driving assembly is disposed on the first assembling member and the second assembling member, so that the first assembling member rotates relative to the second assembling member around the axis, and further moves the plurality of aperture blades to change the diameter of the aperture.

11. The aperture device according to claim 10, characterized in that: It also includes a traction structure, which includes a plurality of shaft columns and a plurality of traction pins. The first assembly also has a first top surface away from the first surface, and the second assembly also has a second top surface away from the second surface. The first top surface surrounds the second top surface and can rotate around the axis relative to the second top surface. A plurality of shaft columns are arranged on the first top surface, and a plurality of traction pins are arranged on the second top surface. Each of the aperture blades has an shaft hole and a guide groove. The shaft hole is rotatably assembled with the shaft column, and the guide groove is slidably assembled with the traction pin.

12. The aperture device according to claim 11, characterized in that: The first assembly has an annular structure, and the first surface and the first top surface are respectively located at opposite ends of the annular structure; the second assembly has a cylindrical structure and an annular flange, the second top surface is located at an axial end of the cylindrical structure, the annular flange is located at the other axial end of the cylindrical structure away from the second top surface, and the second surface is located on the annular flange.

13. The aperture device according to claim 12, characterized in that: The second assembly component further has a plurality of bosses, the plurality of bosses are disposed on the annular flange, a plurality of the second accommodating grooves are respectively formed on the plurality of bosses, and the second surface is located on the top surfaces of the plurality of bosses.

14. The aperture device according to claim 13, characterized in that: The first assembly component also has a plurality of protrusions, which are arranged on the first surface, and each of the protrusions is located between two adjacent bosses.

15. The aperture device according to claim 10, characterized in that: The driving component includes at least one magnet arranged on the first assembly component and at least one coil arranged on the second assembly component. Current flows through at least one of the coils, so that at least one of the coils and at least one of the magnets generate an electromagnetic effect, thereby causing at least one of the magnets to move relative to at least one of the coils.

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