Aperture device and sliding assembly thereof

Abstract

The utility model provides an aperture device and a sliding assembly thereof. The sliding assembly includes a first assembly, a second assembly, and a plurality of balls. The first connecting piece is provided with a first surface and a plurality of first containing grooves, the first surface is perpendicular to the axis, and the first containing grooves are formed in the first surface. The second connecting piece is provided with a second surface and a plurality of second containing grooves, the second surface is perpendicular to the axis and corresponds to the first surface, and the second containing grooves 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 at least one first limiting groove, the second containing grooves comprise at least one second limiting groove, the first limiting grooves and the second limiting grooves are correspondingly arranged, and each of the first limiting grooves and the second limiting grooves is provided with two groove walls which are oppositely arranged and inclined relative to the axis.

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 relative rotation of two parts is mainly used to pull the diaphragm blade to move to adjust the diameter of the diaphragm, 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 for achieving 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, which comprises 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 is perpendicular to the axis, and the plurality of first accommodating grooves are arranged on the first surface. The second connecting member 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 correspond 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. The plurality of first accommodating grooves comprises at least one first limiting groove, the plurality of second accommodating grooves comprises at least one second limiting groove, the at least one first limiting groove and the at least one second limiting groove are correspondingly arranged, and the at least one first limiting groove and the at least one second limiting groove each have two groove walls arranged towards each other and inclined with respect to the axis. The plurality of balls are arranged in the correspondingly arranged at least one first limiting groove and the at least one second limiting groove, so that the plurality of balls can rollingly abut against the two groove walls of the at least one first limiting groove and the two groove walls of the at least one second limiting groove.

[0006] Optionally, the at least one first limiting groove and the at least one second limiting groove are circular arc structures, and the axis passes through the center of the circular arc structures.

[0007] Optionally, the at least one first limiting groove and the at least one second limiting groove have different lengths along a circumferential direction with the axis as the center; and the at least one first limiting groove and the at least one second limiting groove have different depths along the axis.

[0008] Optionally, the plurality of balls arranged in each first limiting groove and corresponding each second limiting groove have the same or different diameters.

[0009] Optionally, the plurality of balls arranged in each first limiting groove and corresponding each second limiting groove include two first balls and one second ball, the two first balls have a first diameter, the second ball has a second diameter, the second diameter is smaller than the first diameter, and the second ball is located between the two first balls.

[0010] Optionally, the plurality of first accommodating grooves further include at least one first assembly groove, the plurality of second accommodating grooves further include 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 oppositely 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, and 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.

[0011] Optionally, the at least one first assembly groove and the at least one second assembly groove are circular arc structures, and the axis passes through the center of the circular arc structures, the length of the at least one first assembly groove along a circumferential direction with the axis as the center is smaller than the length of the at least one first limiting groove along the circumferential direction, and the length of the at least one second assembly groove along the circumferential direction is smaller than the length of the at least one second limiting groove along the circumferential direction with the axis as the center.

[0012] Optionally, the at least one first assembly groove and the at least one second assembly groove have different lengths along a circumferential direction with the axis as the center; and the at least one first assembly groove and the at least one second assembly groove have different depths along the axis.

[0013] Optionally, the center of the at least one first assembly groove is offset from the center of the corresponding at least one second assembly groove in the direction along the axis.

[0014] Optionally, the at least one first limiting groove and the at least one first assembly groove have an angular distance of 180° with respect to the axis, and the at least one second limiting groove and the at least one second assembly groove have an angular distance of 180° with respect to the axis.

[0015] 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 on the first assembly and the second assembly, and the plurality of aperture blades are stacked to form an aperture. The driving assembly is arranged on 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.

[0016] Optionally, the aperture device further comprises a traction structure, the traction structure comprises a plurality of shaft columns and a plurality of traction pins, the first assembly further has a first top surface away from the first surface, the second assembly further has a second top surface away from the second surface, the first top surface surrounds the second top surface and is rotatable relative to the second top surface around the axis, the plurality of shaft columns are arranged on the first top surface, the plurality of traction pins are arranged on the second top surface, each aperture blade has a shaft hole and a guide groove, the shaft hole is rotatably connected with the shaft column, and the guide groove is slidably connected with the traction pin.

[0017] Optionally, 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 away from the second top surface, and the second surface is located at the ring flange.

[0018] Optionally, the second assembly further has a plurality of bosses, the plurality of bosses are arranged on the ring flange, a plurality of second accommodating grooves are formed in the plurality of bosses respectively, and the second surface is located at top surfaces of the plurality of bosses.

[0019] Optionally, the first assembly further has a plurality of bosses, the plurality of bosses are arranged on the first surface, and each boss is located between two adjacent bosses.

[0020] Optionally, the driving assembly comprises at least one magnet arranged on the first assembly and at least one coil arranged on the second assembly, 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 the at least one magnet moves relative to the at least one coil.

[0021] As described above, the application has the following beneficial effects:

[0022] The sliding assembly of the application is provided with the first limiting groove and the second limiting groove which have the two groove walls arranged oppositely and inclined relative to the axis, and a plurality of balls are arranged in the first limiting groove and the second limiting groove arranged correspondingly, so that when the first assembly rotates and slides relative to the second assembly, the rotation center of the first assembly can be accurately kept at the predetermined axis without deviation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1A perspective view of an aperture device according to a first embodiment of the application.

[0024] Figure 2 A perspective view of the aperture device according to the first embodiment of the application with a protective cover removed.

[0025] Figure 3 A perspective view of Figure 1 the aperture device according to the first embodiment of the application.

[0026] Figure 4 A perspective view of Figure 1 the aperture device according to the first embodiment of the application from another perspective.

[0027] Figure 5 A perspective view of Figure 1 the aperture device according to the first embodiment of the application along the line A-A.

[0028] Figure 5a A perspective view of Figure 1 the aperture device according to the first embodiment of the application from another perspective.

[0029] Figure 6 A perspective view of Figure 1 the aperture device according to the first embodiment of the application along the line B-B.

[0030] Figure 7 A perspective view of Figure 1 the aperture device according to the first embodiment of the application along the line C-C.

[0031] Figure 8 A perspective view of an aperture device according to a second embodiment of the application.

[0032] Figure 9 A perspective view of the aperture device according to the second embodiment of the application with a protective cover removed.

[0033] Figure 10 A perspective view of Figure 8 the aperture device according to the second embodiment of the application.

[0034] Figure 11 A perspective view of Figure 8 the aperture device according to the second embodiment of the application from another perspective.

[0035] Figure 12 A perspective view of Figure 8 the aperture device according to the second embodiment of the application along the line D-D.

[0036] Figure 12a A perspective view of Figure 8 the aperture device according to the second embodiment of the application from another perspective.

[0037] Figure 13 A perspective view of Figure 8 the aperture device according to the second embodiment of the application along the line E-E.

[0038] Figure 14 A perspective view of Figure 8A cross-sectional view along the line F-F.

[0039] Explanation of component numbers

[0040] 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 column; 42: traction pin; 111: first surface; 112: first top surface; 113: first accommodating slot; 113a: first limiting slot; 113a1: slot wall; 113b: first assembly slot; 113b1: slot wall; 114: protrusion; 121: second surface; 122: second accommodating slot; 122a: second limiting slot; 122a1: slot wall; 122b: second assembly slot; 122b1: slot wall; 123: second top surface; 131: first ball; 132: second ball; A: optical device; B: base; C: protective cover; L: axis. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will now be described in detail with specific reference being made to the figures. It is to be understood that other embodiments of the present application can be used without departing from the spirit of the present application. The following detailed description is not to be taken in a limiting sense and is made with the understanding that modifications and variations of the principles described herein can be used.

[0042] For the sake of convenience, the terms "below," "lower," "bottom," "bottom portion," "upper," "top," and "top portion" can be used herein with reference to the drawings to describe the spatial relationships between various components or features. It will be understood that these spatial relationships are merely examples and are not meant to limit the scope of the application.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted in a broad sense, for example, can be fixed connection, can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be direct connection, or can be indirect connection through an intermediate medium; can be internal connection of two components, or can be interaction relationship between two components, unless otherwise explicitly specified and limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4wherein 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 a protective cover, Figure 3 is Figure 1 a perspective exploded view of the aperture device of the first embodiment of the present application, Figure 4 is Figure 1 a perspective exploded view of the aperture device of the first embodiment of the present application from another angle. As shown in the figure, the aperture device 1 of the present embodiment is disposed on a base B of an optical device A, the base B is provided with an image sensor, the aperture device 1 is located in front of the image sensor on the light receiving side, the optical device A is provided with a protective cover C, and the protective cover C covers 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 an axis L to generate relative sliding, thereby moving the plurality of aperture blades 20 to change the aperture diameter. The axis L of the present embodiment can coincide with the optical axis of the optical device.

[0045] 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 connected to the second set of components 12, and the plurality of balls 13 is rollably disposed 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.

[0046] The first set of components 11 has a ring structure, and the first set of components 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 ring 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 set of components 11 close to the second set of components 12 and the base B of the optical device, and the first top surface 112 is disposed at one end of the first set of components 11 away from the second set of components 12 and the base B of the optical device. The plurality of first accommodating grooves 113 are disposed on the first surface 111, and the plurality of first accommodating grooves 113 of the present embodiment are formed on the first surface 111 at equal angular distances from each other.

[0047] The second set of members 12 has a cylindrical structure 12a and a ring-shaped flange 12b, which is disposed at one end of the cylindrical structure 12a close to the base B and extends radially. The second set of members 12 also has a plurality of bosses 12c, which are disposed on the surface of the ring-shaped flange 12b away from the base B and abut 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, and the top surface of the plurality of bosses 12c is the second surface 121, the plurality of second receiving grooves 122 are respectively disposed on the top surface of the plurality of bosses 12c, i.e. the plurality of second receiving grooves 122 are disposed on the second surface 121, and the second receiving grooves 122 correspond to the first receiving grooves 113 and have a shape symmetrical to 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.

[0048] The first set of members 11 also has a plurality of protrusions 114, which are disposed 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.

[0049] The plurality of balls 13 are disposed 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 and each second receiving groove 122.

[0050] 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, Figure 6 is Figure 1 a sectional view along the B-B line, Figure 7 is Figure 1A cross-sectional view along the line C-C. As shown, the plurality of first accommodating grooves 113 of the present embodiment includes one first limiting groove 113a and three first assembly grooves 113b. The plurality of second accommodating grooves 122 includes one second limiting groove 122a and three second assembly grooves 122b. The first limiting groove 113a and the second limiting groove 122a are correspondingly arranged, and the three first assembly grooves 113b and the three second assembly grooves 122b are correspondingly arranged. The first limiting groove 113a and the three first assembly grooves 113b are all circular arc structures, and the axis L extends through the center of the circular arc structure. Similarly, the second limiting groove 122a and the three second assembly grooves 122b are also circular arc structures, and the axis L extends through the center of the circular arc structure.

[0051] The first limiting groove 113a and the second limiting groove 122a each have two groove walls that are arranged towards each other and inclined with respect to the axis L. The plurality of balls 13 is arranged in the correspondingly arranged first limiting groove 113a and the second limiting groove 122a, so that the plurality of balls 13 can be rollingly abutted against the two groove walls 113a1 of the first limiting groove 113a, and the plurality of balls 13 can be rollingly abutted against the two groove walls 122a1 of the second limiting groove 122a, so that the balls 13 are radially limited in 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 all the balls 13 in each first limiting groove 113a and the corresponding each second limiting groove 122a, that is, the first limiting groove 113a and the second limiting groove 122a have a certain spacing in the circumferential direction for the balls 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 device.

[0052] As shown in Figure 5a , 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. 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 shown in Figure 6 , the depth of the first limiting groove 113a and the second limiting groove 122a in the direction of the axis L is not equal. The depth of the first limiting groove 113a of the present embodiment is less than the depth of the second limiting groove 122a.

[0053] The plurality of balls 13 disposed in the first limiting groove 113a and the second limiting groove 122a includes two first balls 131 having a first diameter and one second ball 132 having a second diameter smaller than the first diameter, and the second ball 132 is disposed between the two first balls 131.

[0054] Each first assembly groove 113b has two groove walls 113b1 disposed oppositely and parallel to the axis L, and each second assembly groove 122b has two groove walls 122b1 disposed oppositely and parallel to the axis L. In the present embodiment, one ball 13 is disposed in each of the corresponding first assembly groove 113b and the second assembly groove 122b, and the distance between the two groove walls 113b1 of the first assembly groove 113b is greater than the diameter of the ball 13, and the distance 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 and each second assembly groove 122b and the ball 13 can provide an allowance for assembly tolerance. In addition, the line connecting the center of each corresponding first assembly groove 113b and the center of each second assembly groove 122b intersects the axis L, i.e. 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 greater than the diameter of the ball 13, thereby providing an allowance for assembly tolerance.

[0055] Thus, the first assembly member 11 and the second assembly member 12 of the present embodiment are limited in the radial direction by the balls 13 for the first limiting groove 113a and the second limiting groove 122a, thereby providing the required precision for the operation of the aperture device, while the sliding assembly of each corresponding first assembly groove 113b and each second assembly groove 122b and the ball 13 can provide an allowance for assembly tolerance, which can maintain the precision relative to the center of rotation, and also does not cause excessive positioning and difficulty in assembly.

[0056] The ball 13 disposed in the center of the first assembly groove 113b and the second assembly groove 122b has the same diameter as the first ball 131 disposed in the first limiting groove 113a and the second limiting groove 122a, i.e. the first diameter.

[0057] The length of the first assembly groove 113b in the circumferential direction is less than the length of the first limiting groove 113a in the circumferential direction, and the length of the second assembly groove 122b in the circumferential direction is less than the length of at least one second limiting groove 122a in the circumferential direction, so that the number of balls 13 accommodated in the corresponding first limiting groove 113a and the second limiting groove 122a is greater than the number of balls 13 accommodated in the corresponding first assembly groove 113b and the second assembly groove 122b.

[0058] In addition, as shown in Figure 5a , the length of the first assembly groove 113b along the circumferential direction is not equal to the length of the second assembly groove 122b along the circumferential direction with the axis L as the center. 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 in the present embodiment. As shown in Figure 6 , the depth of the first assembly groove 113b along the axis L direction is not equal to the depth of the second assembly groove 122b along the axis L direction. The depth of the first assembly groove 113b is less than the depth of the second assembly groove 122b in the present embodiment.

[0059] The first limiting groove 113a in 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.

[0060] The plurality of aperture blades 20 are rotatably arranged on the first set of components 11 and the second set of components 12, and the plurality of aperture blades 20 are stacked with each other to form an aperture. The aperture device 1 further comprises a traction structure 40, the traction structure 40 comprising a plurality of shaft columns 41 arranged on the first top surface 112 and a plurality of traction pins 42 arranged on the second top surface 123, each aperture blade 20 having a shaft hole 21 rotatably coupled with the shaft column 41 and a guide slot 22 slidably coupled with the traction pin 42. When the first set of components 11 rotates relative to the second set of components 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 to the guide slot 22, thereby enlarging or reducing the diameter of the aperture.

[0061] The driving assembly 30 comprises a pair of magnets 31 arranged on the first set of components 11 and a pair of coils 32 arranged on the second set of components 12. Current flows through the coil 32, so that the coil 32 and the magnet 31 generate electromagnetic effect, thereby causing the magnet 31 to move relative to the coil 32, so that the first set of components 11 rotates relative to the second set of components 12 around the axis L, and thereby causing the plurality of aperture blades 20 to move to change the diameter of the aperture.

[0062] Although the plurality of first accommodating grooves 113 in the present embodiment comprises one first limiting groove 113a, and the plurality of second accommodating grooves 122 comprises one second limiting groove 122a, the present application is not limited thereto, in other embodiments, the plurality of first accommodating grooves can also comprise two first limiting grooves, three first limiting grooves, or all the plurality of first accommodating grooves are first limiting grooves, and the plurality of second accommodating grooves can also comprise two second limiting grooves, three second limiting grooves, or all the plurality of second accommodating grooves are second limiting grooves.

[0063] Please refer to Figure 8 , Figure 9 ,Figure 10 、 Figure 11 、 Figure 12 、 Figure 12a 、 Figure 13 and Figure 14 which represents the aperture device of the second embodiment of the present application. The present embodiment has some same structure as the first embodiment, thus the same components are denoted by the same symbols and the description thereof is omitted. The difference between the present embodiment and the first embodiment is that the plurality of balls 13 arranged in the first limiting slot 113a and the second limiting slot 122a have the same diameter, and the ball 13 arranged in the center of the first assembling slot 113b and the second assembling slot 122b has the same diameter as the first ball 131 arranged in the first limiting slot 113a and the second limiting slot 122a. In some embodiments, two balls 13 are arranged in the first limiting slot 113a and the second limiting slot 122a, and the two balls 13 have the same diameter.

[0064] Although the plurality of first accommodating slots 113 of the present embodiment includes one first limiting slot 113a, and the plurality of second accommodating slots 122 includes one second limiting slot 122a, the present application is not limited thereto, and in other embodiments, the plurality of first accommodating slots can also be two first limiting slots, three first limiting slots, or all the plurality of first accommodating slots are first limiting slots, and the plurality of second accommodating slots can also be two second limiting slots, three second limiting slots, or all the plurality of second accommodating slots are second limiting slots.

[0065] The sliding assembly of the present application is arranged with the first limiting slot and the second limiting slot having two slot walls arranged oppositely 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 maintained on the predetermined axis without deviation.

[0066] 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 in the present application should be covered by the claims of the present application.

Claims

1. A sliding assembly for generating sliding about an axis, characterized in that, include: The first set of connectors has a first surface and a plurality of first receiving grooves, the first surface being perpendicular to the axis, and the plurality of first receiving grooves being disposed on the first surface; The second set of connectors has a second surface and a plurality of second receiving grooves. The second surface is perpendicular to the axis and corresponds to the first surface. The plurality of second receiving grooves are respectively provided corresponding to the plurality of first receiving grooves. Multiple balls are disposed in multiple first receiving slots and multiple second receiving slots, such that the first surface slides relative to the second surface in a manner that allows rotation about the axis. The plurality of first receiving slots include at least one first limiting slot, the plurality of second receiving slots include at least one second limiting slot, at least one first limiting slot and at least one second limiting slot are correspondingly arranged, and at least one first limiting slot and at least one second limiting slot each have two slot walls that are arranged facing each other and inclined relative to the axis. The plurality of balls are disposed in at least one first limiting groove and at least one second limiting groove respectively, such that the plurality of balls can roll against the two groove walls of at least one first limiting groove and the two groove walls of at least one second limiting groove.

2. The sliding component as described in claim 1, characterized in that, At least one of the first limiting grooves and at least one of the second limiting grooves are arc-shaped structures, and the axis passes through the center of the arc-shaped structure.

3. The sliding component as described in claim 1, characterized in that, The lengths of at least one first limiting groove and at least one second limiting groove along the circumferential direction with the axis as the center are not equal; the depths of at least one first limiting groove and at least one second limiting groove along the axis are not equal.

4. The sliding component as described in claim 2, characterized in that, Each of the first limiting grooves and the corresponding plurality of balls disposed in each of the second limiting grooves have the same or different diameters.

5. The sliding component as described in claim 4, characterized in that, Each of the first limiting grooves and the corresponding second limiting grooves contains a plurality of balls, including two first balls and one second ball. The two first balls have a first diameter, and the second ball has a second diameter, which is smaller than the first diameter. The second ball is located between the two first balls.

6. The sliding component as claimed in claim 1, characterized in that, The plurality of first receiving slots further include at least one first assembly slot, and the plurality of second receiving slots further include at least one second assembly slot. At least one first assembly slot and at least one second assembly slot are correspondingly arranged. At least one first assembly slot and at least one second assembly slot have groove walls that face each other and are parallel to the axis. At least one ball is disposed in the corresponding at least one first assembly slot and at least one second assembly slot. The distance between the two groove walls of at least one first assembly slot is greater than the diameter of the ball, and the distance between the two groove walls of at least one second assembly slot is greater than the diameter of the ball.

7. The sliding component as claimed in claim 6, characterized in that, At least one of the first assembly slots and at least one of the second assembly slots are arc-shaped structures, and the axis passes through the center of the arc-shaped structure. The length of at least one of the first assembly slots along the circumferential direction with the axis as the center is less than the length of at least one of the first limiting slots along the circumferential direction, and the length of at least one of the second assembly slots along the circumferential direction is less than the length of at least one of the second limiting slots along the circumferential direction.

8. The sliding component as claimed in claim 6, characterized in that, At least one of the first assembly slots and at least one of the second assembly slots have unequal lengths along the circumferential direction with the axis as the center; at least one of the first assembly slots and at least one of the second assembly slots have unequal depths along the axis.

9. The sliding component as claimed in claim 6, characterized in that, The center of at least one of the first assembly slots is offset from the center of at least one of the corresponding second assembly slots in the direction along the axis.

10. The sliding component as claimed in claim 6, characterized in that, At least one of the first limiting grooves and at least one of the first assembly grooves have 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 assembly grooves have an angular distance of 180° relative to the axis.

11. An aperture device, characterized in that, include: The sliding component as described in any one of claims 1 to 10; Multiple aperture blades are rotatably disposed on the first set of connectors and the second set of connectors, and the multiple aperture blades are stacked on top of each other to form an aperture; A drive assembly, disposed on the first and second sets of connectors, causes the first set of connectors to rotate about the axis relative to the second set of connectors, thereby causing the plurality of aperture blades to move to change the diameter of the aperture.

12. The aperture device as claimed in claim 11, characterized in that, It also includes a traction structure, which includes multiple shafts and multiple 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 is rotatable relative to the second top surface about the axis. The multiple shafts are disposed on the first top surface, and the multiple traction pins are disposed on the second top surface. Each aperture blade has a shaft hole and a guide groove. The shaft hole is rotatably connected to the shaft, and the guide groove is slidably connected to the traction pin.

13. The aperture device as claimed in claim 12, characterized in that, The first connector has an annular structure, with the first surface and the first top surface located at opposite ends of the annular structure, respectively; the second connector has a cylindrical structure and an annular flange, with the second top surface located at the axial end of the cylindrical structure, the annular flange located at the other axial end of the cylindrical structure away from the second top surface, and the second surface located at the annular flange.

14. The aperture device as claimed in claim 13, characterized in that, The second connector also has a plurality of bosses disposed on the annular flange, a plurality of second receiving grooves formed on the plurality of bosses, and the second surface located on the top surface of the plurality of bosses.

15. The aperture device as claimed in claim 14, characterized in that, The first connector also has a plurality of protrusions disposed on the first surface, each of the protrusions being located between two adjacent protrusions.

16. The aperture device as claimed in claim 11, characterized in that, The driving assembly includes at least one magnet disposed on the first connector and at least one coil disposed on the second connector. Current flows through at least one coil, causing at least one coil to generate an electromagnetic effect with at least one magnet, thereby causing at least one magnet to move relative to at least one coil.

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