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 assembly part, a second assembly part and a plurality of sliding convex bodies. The first assembly has a first surface and a plurality of sliding protrusions, the first surface being perpendicular to the axis. The second assembly part is provided with a second surface and a plurality of containing grooves, the second surface is perpendicular to the axis and corresponds to the first surface, and the containing grooves are formed in the second surface. The sliding convex bodies are integrally formed with the first assembly part and protrude out of the first surface. The plurality of sliding convex bodies are respectively combined with the plurality of accommodating grooves in a sliding manner, so that the first surface relatively slides in a manner of rotating around the axis relative to the second surface; the first assembly part and the sliding convex bodies are integrally formed, so that the assembling tolerance can be reduced, tolerance accumulation is reduced, and the rotation center of the first assembly part can be accurately kept on the preset axis without deviation.

Description

TECHNICAL FIELD

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

[0002] The existing automatic focusing optical mechanism mainly utilizes a voice coil motor to make two mutually assembled lens barrels and a base relatively move, so that the lens moves relative to an image sensor to play a focusing role. The existing sliding assembly structure between the lens barrel and the base is to set two linear tracks between two relatively moving components, and set a sliding convex body between the two linear tracks, so as to facilitate linear movement of the two components, and the cross section of one of the tracks is set in a V shape, so as to realize limiting and provide the precision of keeping the components assembled during movement.

[0003] However, for optical mechanisms used for other functions, such as mechanisms used for aperture opening and closing, since the relative rotation of two components is mainly used to pull the aperture blade to move to adjust the diameter of the aperture, if the existing structure of two components forming a track and being slidably assembled by a sliding convex body is used, since the two components and the sliding convex body have tolerances caused by manufacturing processes and tolerances caused by assembly processes, the accumulated tolerances may cause the position precision of the rotation center during rotation to be unable to be ensured. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present application is to provide a sliding assembly, which is used to solve the problem that the position precision of the rotation center cannot be ensured due to accumulated tolerances in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides a sliding assembly for generating rotation around an axis, which comprises a first assembly, a second assembly and a plurality of sliding convex bodies. The first assembly has a first surface and a plurality of sliding convex bodies, and the first surface is perpendicular to the axis. The second assembly has a second surface and a plurality of accommodation grooves, the second surface is perpendicular to the axis and corresponds to the first surface, and the plurality of accommodation grooves are arranged on the second surface. The plurality of sliding convex bodies are integrally formed with the first assembly and protrude from the first surface. The plurality of sliding convex bodies are respectively slidably combined with the plurality of accommodation grooves, so that the first surface relatively slides with respect to the second surface in a manner of rotating around the axis.

[0006] Optionally, the plurality of accommodation grooves comprises at least one limiting groove, the at least one limiting groove has two groove walls which are arranged towards each other and are inclined with respect to the axis, and the sliding convex body slidably abuts against the two groove walls of the at least one limiting groove.

[0007] Optionally, the plurality of accommodation grooves comprises at least one assembly groove, the at least one assembly groove has two groove walls which are arranged towards each other and are parallel to the axis, and the distance between the two groove walls of the at least one assembly groove is greater than the size of the sliding convex body.

[0008] Optionally, the at least two sliding protrusions have an angular distance of 180° relative to the axis from each other, and the at least two accommodation grooves have an angular distance of 180° relative to the axis from each other.

[0009] Optionally, each of the accommodation grooves is a circular arc structure, and the axis passes through the center of the circular arc structure.

[0010] Optionally, each of the sliding protrusions is a partial structure of a sphere.

[0011] The present 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 on each other 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 in turn, the plurality of aperture blades move to change the diameter of the aperture.

[0012] 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 of the aperture blades 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.

[0013] Optionally, the first assembly has a ring structure, and 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.

[0014] Optionally, the second assembly further has a plurality of bosses, the plurality of bosses are arranged on the ring flange, the plurality of accommodation grooves are formed in the plurality of bosses, respectively, and the second surface is located at the top surface of the plurality of bosses.

[0015] Optionally, the first assembly further has a plurality of protrusions, the plurality of protrusions are arranged on the first surface, and each of the protrusions is located between two adjacent bosses.

[0016] Optionally, the driving assembly comprises at least one magnet arranged on the first assembly and at least one coil arranged on the second assembly, a current flows through the at least one coil, so that the at least one coil and the at least one magnet generate an electromagnetic effect, and in turn, the at least one magnet moves relative to the at least one coil.

[0017] As described above, the present application has the following beneficial effects:

[0018] The sliding assembly of the present application is integrally formed with the plurality of sliding protrusions of the first assembly, and the sliding protrusions are respectively slidably combined with the plurality of receiving grooves of the second assembly. In addition to the structure that the first assembly and the second assembly form a sliding connection, the integrally formed first assembly and the plurality of sliding protrusions can reduce assembly tolerance, thereby reducing tolerance accumulation, so that the rotation center of the first assembly can be accurately maintained on the predetermined axis without deviation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of an aperture device according to an embodiment of the present application.

[0020] Figure 2 A perspective view of an aperture device according to an embodiment of the present application with a protective cover removed.

[0021] Figure 3 A perspective exploded view of an aperture device according to an embodiment of the present application. Figure 1

[0022] Figure 4 A perspective exploded view of an aperture device according to an embodiment of the present application from another angle. Figure 1

[0023] Figure 5 A sectional view along line A-A of an aperture device according to an embodiment of the present application. Figure 1

[0024] Figure 6 A sectional view along line B-B of an aperture device according to an embodiment of the present application. Figure 1

[0025] Figure 7 A sectional view along line C-C of an aperture device according to an embodiment of the present application. Figure 1

[0026] ASSEMBLY REFERENCE

[0027] 1: aperture device; 10: sliding assembly; 11: first assembly; 12: second assembly; 12a: cylindrical structure; 12b: annular flange; 12c: boss; 13: sliding protrusion; 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; 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

[0028] ​​​​​Following, the embodiments of the present application are described through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. The present application can also be implemented or applied through other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0029] For the convenience of description, spatial relationship words such as "under", "below", "lower", "underneath", "above", "upper" and the like can be used herein to describe the relationship of one component or feature to other components or features shown in the drawings. It will be understood that these spatial relationship words are intended to include other orientations of the device in use or operation in addition to the orientations depicted in the drawings.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "fix", and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; 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 the present application can be understood according to the specific circumstances.

[0031] 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 , 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 generate 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.

[0032] The sliding assembly 10 of the present embodiment comprises a first member 11, a second member 12, and a plurality of sliding protrusions 13. The second member 12 is fixed to the base B of the optical device, the first member 11 is rotatably coupled to the second member 12, and the plurality of sliding protrusions 13 are disposed on the first member 11 and integrated with the first member 11. The plurality of sliding protrusions 13 abut against the second member 12, so that the first member 11 and the second member 12 are relatively rotatably coupled.

[0033] The first member 11 has a ring structure, and the first member 11 has a first surface 111 and a first top surface 112. 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 disposed at one end of the first member 11 close to the second member 12 and the base B of the optical device, and the first top surface 112 is disposed at one end of the first member 11 away from the second member 12 and the base B of the optical device. The plurality of sliding protrusions 13 are disposed on the first surface 111 at equal angular distances from each other.

[0034] The second member 12 has a cylindrical structure 12a and a ring-shaped flange 12b. The ring-shaped flange 12b is disposed at one end of the cylindrical structure 12a close to the base B and extends radially. The second member 12 also has a plurality of bosses 12c disposed 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 member 12 also has a second surface 121, a plurality of receiving 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 receiving grooves 122 are disposed on the top surfaces of the plurality of bosses 12c, i.e. the plurality of receiving grooves 122 are disposed on the second surface 121, and the receiving grooves 122 correspond to and accommodate the sliding protrusions 13. 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.

[0035] The first member 11 also has a plurality of protrusions 114 disposed on the first surface 111 between two adjacent sliding protrusions 13, so that when the first member 11 is coupled with the second member 12, each protrusion 114 is located between two adjacent bosses 12c.

[0036] The plurality of sliding protrusions 13 are disposed in the plurality of receiving grooves 122, so that the first surface 111 relatively slides around the axis L with respect to the second surface. In some embodiments, the sliding protrusions 13 comprise a partial structure of a sphere, for example, the sliding protrusions 13 comprise a hemisphere or a 3 / 4 sphere.

[0037] Please refer to Figure 5 ,Figure 6 and Figure 7 wherein Figure 5 is Figure 1 a sectional view along the line A-A, Figure 6 is Figure 1 a sectional view along the line B-B, Figure 7 is Figure 1 a sectional view along the line C-C. As shown, the plurality of accommodating grooves 122 of the present embodiment includes two limiting grooves 122a and two assembling grooves 122b, both of which are circular arc structures with the axis L extending through the center of the circular arc structures.

[0038] Each of the limiting grooves 122a has two groove walls facing each other and inclined with respect to the axis L, and the plurality of sliding protrusions 13 are combined in the corresponding limiting grooves 122a so that the plurality of sliding protrusions 13 can be slidably abutted against the two groove walls 122al of the limiting grooves 122a, thereby allowing the sliding protrusions 13 to be limited in the radial direction with respect to the limiting grooves 122a. However, the length of the limiting grooves 122a in the circumferential direction with the axis L as the center is greater than the length or diameter (if the sliding protrusion is a partial structure of a sphere, the diameter here corresponds to the part of the sphere) of the sliding protrusion 13 in the circumferential direction, that is, the limiting grooves 122a have a certain spacing in the circumferential direction with respect to the sliding protrusions 13, so that the sliding protrusions 13 and the limiting grooves 122a can move relatively in the circumferential direction. Thus, when the first set of components 11 and the second set of components 12 are relatively rotated and slid, the combination of the sliding protrusions 13 and the limiting grooves 122a prevents the first set of components 11 from deviating in the radial direction, so that the center of the first set of components 11 can be kept on the axis L or deviate within an allowable range, thereby providing the required accuracy for the operation of the aperture mechanism.

[0039] Each of the assembling grooves 122b has two groove walls 122bl facing each other and parallel to the axis L. In the present embodiment, one sliding protrusion 13 is arranged in each of the assembling grooves 122b, and the spacing between the two groove walls 122bl of the assembling grooves 122b is greater than the diameter of the sliding protrusion 13, so that the sliding combination of each of the assembling grooves 122b and the sliding protrusion 13 can provide an allowable amount of assembly tolerance.

[0040] Thus, in the present embodiment, the first set of components 11 and the second set of components 12 are limited in the radial direction with respect to the limiting grooves 122a by the sliding protrusions 13, thereby providing the required accuracy for the operation of the aperture device, while the sliding combination of the assembling grooves 122b and the sliding protrusions 13 can provide an allowable amount of assembly tolerance, which can not only maintain the accuracy with respect to the center during rotation, but also avoid excessive positioning that makes assembly difficult.

[0041] To make the center of the sliding protrusion 13 combined with the limiting slot 122a and the center of the sliding protrusion 13 combined with the assembling slot 122b in the same horizontal position, the boss 12c of the limiting slot 122a is set to have a lower height than the boss 12c of the assembling slot 122b.

[0042] The sliding protrusion 13 set in the assembling slot 122b has the same diameter as the first sliding protrusion 131 set in the limiting slot 122a.

[0043] The length of the assembling slot 122b in the circumferential direction of the embodiment is equal to the length of the limiting slot 122a in the circumferential direction, so that the number of the sliding protrusions 13 accommodated in the limiting slot 122a is the same as the number of the sliding protrusions 13 accommodated in the assembling slot 122b. However, the present application is not limited thereto, and in other embodiments, the length of the assembling slot 122b in the circumferential direction can be shorter than the length of the limiting slot 122a in the circumferential direction, so that multiple sliding protrusions 13 can be accommodated in one limiting slot 122a, and the multiple sliding protrusions 13 combined with one limiting slot 122a can have the same or different diameters.

[0044] The limiting slot 122a and one of the assembling slots 122b of the embodiment have an angular distance of 180° with respect to the axis.

[0045] The plurality of aperture blades 20 are rotatably set in the first set of members 11 and the second set of members 12, and the plurality of aperture blades 20 are stacked with each other to form an aperture. The aperture device 1 further comprises a pulling structure 40, the pulling structure 40 comprising a plurality of shaft columns 41 and a plurality of pulling pins 42, the plurality of shaft columns 41 being set in the first top surface 112, the plurality of pulling pins 42 being set in the second top surface 123, each aperture blade 20 having a shaft hole 21 and a guide slot 22, the shaft hole 21 being rotatably connected with the shaft column 41, the guide slot 22 being 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 guide slot 22 being pulled by the pulling pin 42, thereby enlarging or reducing the diameter of the aperture.

[0046] The driving assembly 30 comprises a pair of magnets 31 set in the first set of members 11 and a pair of coils 32 set in 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 making the magnets 31 move relative to the coils 32, so that the first set of members 11 rotates relative to the second set of members 12 around the axis L, and thereby making the plurality of aperture blades 20 move to change the diameter of the aperture.

[0047] Although the plurality of accommodating grooves 122 of the present embodiment includes two limiting grooves 122a, the present application is not limited thereto, and in other embodiments, the plurality of accommodating grooves can include one limiting groove or three limiting grooves, or all of the plurality of accommodating grooves are limiting grooves.

[0048] The sliding assembly of the present application is integrally formed with the plurality of sliding protrusions by the first assembly, and the sliding protrusions are respectively slidably combined with the plurality of accommodating grooves of the second assembly. In addition to forming the structure of the sliding assembly of the first assembly and the second assembly, the integrally formed first assembly and the plurality of sliding protrusions can reduce the assembly tolerance, thereby reducing the tolerance accumulation, so that the rotation center of the first assembly can be accurately maintained on the predetermined axis without deviation.

[0049] The above-described embodiments are merely 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-described 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: A first assembly has a first surface and a plurality of sliding protrusions, the first surface being perpendicular to the axis; The second assembly has a second surface and a plurality of receiving slots, the second surface being perpendicular to the axis and corresponding to the first surface, and the plurality of receiving slots being disposed on the second surface; Multiple sliding protrusions are integrally formed with the first assembly and protrude from the first surface; The plurality of sliding protrusions are slidably coupled to the plurality of receiving grooves, such that the first surface slides relative to the second surface in a manner that allows rotation about the axis.

2. The sliding component as described in claim 1, characterized in that, The plurality of receiving slots include at least one limiting slot, the at least one limiting slot having two slot walls that are arranged facing each other and inclined relative to the axis, and the sliding protrusion slidably abuts against the two slot walls of the at least one limiting slot.

3. The sliding component as described in claim 1 or 2, characterized in that, The plurality of receiving slots include at least one assembly slot, the at least one assembly slot having slot walls facing each other and parallel to the axis, and the distance between the two slot walls of the at least one assembly slot being greater than the size of the sliding protrusion.

4. The sliding component as described in claim 1, characterized in that, At least two of the sliding protrusions have an angular distance of 180° relative to the axis, and at least two of the receiving grooves have an angular distance of 180° relative to the axis.

5. The sliding component as described in claim 1, characterized in that, Each of the receiving slots is an arc-shaped structure and the axis passes through the center of the arc-shaped structure.

6. The sliding component as claimed in claim 1, characterized in that, Each of the sliding protrusions is a partial structure of a sphere.

7. An aperture device, characterized in that, include: The sliding component as described in any one of claims 1 to 6; Multiple aperture blades are rotatably disposed on the first assembly and the second assembly, and the multiple aperture blades are stacked on top of each other to form an aperture; A drive assembly, disposed on the first assembly and the second assembly, causes the first assembly to rotate about the axis relative to the second assembly, and thereby causes the plurality of aperture blades to move to change the diameter of the aperture.

8. The aperture device as described in claim 7, 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.

9. The aperture device as described in claim 8, characterized in that, The first assembly has an annular structure, with the first surface and the first top surface located at opposite ends of the annular structure, respectively; the second assembly 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.

10. The aperture device as claimed in claim 9, characterized in that, The second assembly also has a plurality of bosses disposed on the annular flange, a plurality of receiving grooves formed on the plurality of bosses respectively, and the second surface is located on the top surface of the plurality of bosses.

11. The aperture device as claimed in claim 10, characterized in that, The first assembly also has a plurality of protrusions disposed on the first surface, each of the protrusions being located between two adjacent protrusions.

12. The aperture device as claimed in claim 7, characterized in that, The drive assembly includes at least one magnet disposed on the first assembly and at least one coil disposed on the second assembly. Current flows through at least one of the coils, causing an electromagnetic effect between the at least one coil and at least one of the magnets, thereby causing at least one of the magnets to move relative to at least one of the coils.

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