Aperture module, lens device and photographic equipment

Abstract

The invention relates to the technical field of aperture devices, in particular to an aperture module, a lens device and photographic equipment. The aperture module comprises a fixing seat and a rotating disc, the fixing seat is provided with an inner cavity, the rotating disc is axially and rotatably arranged in the inner cavity, a containing groove communicated with the inner cavity is further formed in the fixing seat and is opposite to the rotating disc, a gap is formed between the rotating disc and the fixing seat, a silencing part is installed in the containing groove, and at least part of the silencing part extends into the inner cavity through the containing groove. And the silencing part penetrates through the gap to be in contact with the turntable, and is extruded by the turntable to generate elastic deformation. The rotary disc can rotate around the central axis in the inner cavity relative to the fixing base under the action of external force, meanwhile, the rotary disc also rotates relative to the silencing part, the rotary disc is indirectly connected with the fixing base through the silencing part, vibration of the rotary disc is absorbed through elastic deformation of the silencing part, and then the purposes of shock absorption and noise reduction are achieved when the aperture module acts. And the requirement of photographic equipment on silencing of the aperture during video recording is met.

Description

Technical Field

[0001] The present invention relates to the technical field of aperture devices, and in particular to an aperture module, a lens device and a photographic device. Background Art

[0002] The aperture device is widely used in cameras, video cameras, microscopes, telescopes and other equipment. It is a device used to control the amount of light that passes through the lens and enters the sensory surface of the body. The aperture device usually includes an aperture seat, a drive ring and a plurality of aperture blades. The drive ring and the aperture blades are rotatably arranged in the aperture seat. The aperture blades are surrounded to form a light hole. The drive ring is connected to an additional drive device. The drive ring is driven to rotate in the aperture seat by the drive device, and the aperture blades are driven to rotate by the drive ring to expand or shrink the light hole. When taking pictures or recording videos, the amount of light entering is changed by changing the aperture size of the light hole. In the existing aperture device, since the drive ring is in direct contact with the aperture seat, when the aperture device is actuated, the friction between the drive ring and the aperture seat is large, and the drive ring will generate a large noise when rotating. When recording, the noise will be recorded into the video, resulting in a poor user experience.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The present invention aims to solve the problem that in the above-mentioned existing aperture device, a drive ring is in direct contact with the aperture seat, and the drive ring generates relatively large noise when rotating. The noise is recorded into the video during video recording, resulting in a poor viewing experience for users. An aperture module, a lens device and a photographic device are proposed.

[0005] The technical solution adopted by the present invention to solve the technical problem is: An aperture module includes a fixed seat and a turntable, wherein the fixed seat is provided with an inner cavity, and the turntable is axially rotatably arranged in the inner cavity, and the fixed seat is also provided with a receiving groove connected to the inner cavity, the receiving groove is opposite to the turntable, and a gap is formed between the turntable and the fixed seat, and a silencer is installed in the receiving groove, at least a part of the silencer extends into the inner cavity through the receiving groove, and contacts the turntable through the gap, and the silencer is elastically deformed by the extrusion of the turntable.

[0006] In an aperture module as described above, the fixed seat includes a base plate and a side wall connected to the base plate, the side wall extends from the outer edge of the base plate toward one side along the axial direction of the fixed seat, the inner side of the side wall is also provided with an extension wall extending toward the inner cavity, the end surface of the extension wall away from the base plate forms a supporting surface for supporting the turntable, and the accommodating groove is provided between the side wall and the extension wall.

[0007] As described above, in an aperture module, the accommodating groove comprises an upper cavity and a lower cavity which are connected to each other, the upper cavity is recessed outwardly along the radial direction of the fixing seat relative to the inner wall surface of the side wall, the lower cavity is recessed toward the bottom plate along the axial direction of the fixing seat relative to the supporting surface of the extension wall, and a limiting wall opposite to the lower cavity is formed in the extension wall, the upper cavity extends toward the bottom plate along the height direction of the side wall and is connected with the lower cavity, and the height of the lower cavity is 1 / 4 to 1 / 2 of the total height of the accommodating groove; the silencer comprises a first part corresponding to the upper cavity and a second part corresponding to the lower cavity, the first part extends into the inner cavity through the upper cavity, and the height of the first part is slightly greater than or equal to the height of the turntable; the second part is in the lower cavity and opposite to the limiting wall.

[0008] In the aperture module as described above, both ends of the extension wall extend along the circumference of the side wall, and the circumference of the extension wall is 1 / 2 to 2 / 3 of the circumference of the side wall.

[0009] As described above, the aperture module further includes a plurality of aperture blades arranged between the fixed seat and the turntable, and a driving device connected to the turntable, each of the aperture blades is arranged in an arc shape, and a driving end and a driven end are respectively arranged at both ends of the aperture blade, a first through hole and a plurality of slide grooves adapted to the driving end are penetrated in the turntable, each of the slide grooves is arranged at equal intervals along the circumference of the turntable and is located on the circumference of the first through hole, and each of the slide grooves extends along the radial direction of the turntable; a second through hole and a plurality of mounting holes adapted to the driven end are penetrated in the bottom plate, each of the mounting holes is arranged at equal intervals along the circumference of the bottom plate and is located on the circumference of the second through hole; through the first through hole and the first The two through holes are aligned so that the turntable and the fixed seat are coaxially arranged, the driving end of each aperture blade is slidably connected to each slide groove in a one-to-one correspondence, and the driven end of each aperture blade is rotatably connected to each mounting hole in a one-to-one correspondence. The aperture blades are staggered around the axial direction of the turntable so that the aperture blades are surrounded by each other to form a light-through hole, and the light-through hole can be connected with the first through hole and the second through hole; the turntable is driven to rotate by the driving device, and the driving end of each aperture blade is driven to slide in the slide groove, and the driven end of each aperture blade is rotated in the mounting hole, so that each aperture blade switches to an open state and a closed state corresponding to the increase and reduction of the light-through hole respectively.

[0010] In the aperture module as described above, both ends of each slide groove are respectively provided with a first limiting end and a second limiting end, and the sliding distance of the driving end of the aperture blade in the slide groove is limited by the first limiting end and the second limiting end.

[0011] In an aperture module as described above, a positioning block is also provided on one side of the turntable, and the positioning block extends along the outer edge of the turntable toward the bottom plate, and a limiting groove is also provided in the fixing seat and is located on one side of the extension wall, and the limiting groove is connected to the inner cavity and both ends extend along the circumferential direction of the side wall, and the positioning block of the turntable can be extended into the limiting groove, and the rotation of the turntable drives the extension block to rotate synchronously in the limiting groove, and the rotation range of the turntable is limited by the limiting groove; a plurality of washers corresponding to each of the mounting holes are provided on the bottom plate, and each of the washers extends from the bottom plate toward the inner cavity.

[0012] In an aperture module as described above, the driving device includes a motor and a transmission member connected to the motor, and the outer edge of the turntable is provided with a matching portion connected to the transmission member for rotation. The transmission member is driven to rotate by the motor, and transmission is generated between the transmission member and the matching portion, thereby driving the turntable to rotate in the inner cavity.

[0013] The present invention also provides a lens device, comprising the aperture module as described above.

[0014] The present invention also provides a photographing device, comprising the lens device as described above.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present application provides an aperture module, which can be installed in a lens device, and the lens device can be applied to photographic equipment, a turntable can be axially rotatably installed in the inner cavity of the fixed seat, the turntable and the fixed seat are coaxially arranged, and the outer diameter of the turntable is slightly smaller than the inner diameter of the fixed seat, so that a gap connected to the inner cavity is formed between the turntable and the fixed seat, a receiving groove opposite to the turntable is arranged in the fixed seat, a silencer is installed in the receiving groove, and at least a part of the silencer extends into the inner cavity through the receiving groove, and the silencer is arranged in the inner cavity. The thickness of the extended part in the cavity is equal to the distance of the gap, and the silencer is in contact with the turntable so that the silencer can provide support for the turntable and enhance the stability of the turntable; the turntable can rotate around the central axis in the inner cavity relative to the fixed seat under external force, and the turntable also rotates relative to the silencer. The turntable is indirectly connected to the fixed seat through the silencer, and the vibration of the turntable is absorbed by the elastic deformation of the silencer, thereby achieving the purpose of shock absorption and noise reduction when the aperture module is actuated, and meeting the requirements of the photographic equipment for silent aperture action when recording.

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram of the aperture module of the present invention; Figure 2is an exploded view of the aperture module of the present invention; Figure 3 A top view of the aperture module of the present invention (with the seat cover and the turntable hidden); Figure 4 for Figure 3 A-A section Figure 1 (Hide the seat cover, turntable, aperture blades and silencer); Figure 5 for Figure 3 A-A section Figure 2 (hides the seat cover, turntable and aperture blades); Figure 6 for Figure 3 A-A section Figure 3 (including seat cover, turntable, aperture blades and silencer); Figure 7 for Figure 6 A magnified view of part B in FIG. Figure 8 A top view of a fixing seat of an aperture module of the present invention; Fig. 9 A top view of a fixing seat, aperture blades and a rotating disk of an aperture module of the present invention; Fig.10 for Fig. 9 A magnified view of part C; Fig.11 is a side view of the aperture module of the present invention; Fig.12 for Fig.11 D-D section Figure 1 ; Fig.13 for Fig.11 D-D section Figure 2 . DETAILED DESCRIPTION

[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] like Figure 1As shown in FIG. 13 , the present invention provides an aperture module 100, which can be installed in a lens device, and the lens device can be applied to photographic equipment. Specifically, the aperture module 100 includes a fixed seat 110 and a turntable 120, the turntable 120 and the fixed seat 110 are detachably connected in the front-back direction, the fixed seat 110 is provided with an inner cavity 111, the turntable 120 is axially rotatably arranged in the inner cavity 111, and the fixed seat 110 is also provided with a The inner cavity 111 is connected to a receiving groove 112, the receiving groove 112 is opposite to the rotating disk 120, and a gap 101 is formed between the rotating disk 120 and the fixing seat 110. A muffler 130 is installed in the receiving groove 112. At least part of the muffler 130 extends into the inner cavity 111 through the receiving groove 112, and passes through the gap 101 to contact the rotating disk 120. The muffler 130 is elastically deformed by the squeezing of the rotating disk 120. Figure 6 and Figure 7 As shown, during assembly, the turntable 120 can be axially rotatably installed in the inner cavity 111, the turntable 120 and the fixing seat 110 are coaxially arranged, and the outer diameter of the turntable 120 is slightly smaller than the inner diameter of the fixing seat 110, so that a gap 101 connected to the inner cavity 111 is formed between the turntable 120 and the fixing seat 110, and the thickness of the portion of the muffler 130 extending into the inner cavity 111 is equal to the distance of the gap 101, and the muffler 130 is in contact with the turntable 120, so that the muffler 130 can provide support for the turntable 120 and enhance the stability of the turntable 120; the turntable 120 can rotate around the inner cavity 111 under external force. Figure 2 The central axis L1 shown rotates in the inner cavity 111 relative to the fixed seat 110, and the turntable 120 also rotates relative to the silencer 130, so that the turntable 120 vibrates and forms an extrusion force on the silencer 130. The silencer 130 is elastically deformed by the extrusion of the turntable 120. The turntable 120 is indirectly connected to the fixed seat 110 through the silencer 130, and the vibration of the turntable 120 is absorbed by the elastic deformation of the silencer 130, thereby achieving the purpose of shock absorption and noise reduction when the aperture module 100 is actuated, and meeting the requirement of the photographic equipment for silent aperture action when recording.

[0020] In some embodiments, the sound-absorbing member 130 is made of sound-absorbing cotton with a porous structure, such as polyester sound-absorbing cotton. Figure 5 As shown in FIG. 7 , during assembly, the sound-absorbing cotton is directly installed into the receiving groove 112. Figure 5 The silencer 130 is in a natural state without being compressed, and at least part of the silencer cotton extends into the inner cavity 111 through the receiving groove 112. After the rotating disk 120 is installed, the silencer cotton is squeezed and shrunk by the rotating disk 120, that is, the silencer cotton is compressed by the rotating disk 120. Figure 7The muffler 130 in the inner cavity is in a compressed state, and the muffler cotton is squeezed by the turntable 120 to produce elastic deformation and absorb the vibration of the turntable 120, thereby achieving the purpose of vibration reduction and noise reduction of the aperture module 100. Moreover, after the muffler cotton shrinks, the thickness of the extended portion in the inner cavity 111 is equal to the distance of the gap 101, so that the muffler cotton can provide corresponding support force for the turntable 120, enhance the stability of the turntable 120, and keep a small gap between the turntable 120 and the fixing seat 110. The gap 101 reduces the friction between the rotating disk 120 and the fixing seat 110 when the rotating disk 120 is in motion, thereby achieving the purpose of reducing vibration and noise when the aperture module 100 is in motion, and meeting the requirements of the photographic equipment for the quietness of the aperture motion when recording; since the silencer 130 has the characteristics of elastic deformation, when the rotating disk 120 cancels the squeezing of the silencer 130, the silencer 130 can slowly rebound and return to its original state, so that the silencer 130 can be reused, reducing the production cost and use cost of the aperture module 100. Secondly, the silencer cotton has excellent sound absorption, and can further absorb noise when the aperture module 100 is in motion, effectively preventing the photographic equipment from recording the noise of the aperture motion when recording. In addition, since the sound-absorbing cotton will be compressed by the turntable 120 during assembly, the structural strength of the sound-absorbing cotton is enhanced, which can effectively prevent the sound-absorbing cotton from being separated from the receiving groove 112 due to the friction of the rotation of the turntable 120, causing the aperture module 100 to be stuck and unable to move. Based on this, the gap 101 between the turntable 120 and the fixed seat 110 is not easy to be too large, and the receiving groove 112 needs to have a certain depth to accommodate most of the sound-absorbing cotton, so that the sound-absorbing cotton is not easy to fall out of the receiving groove 112.

[0021] In this embodiment, if Figure 6 As shown, the fixing seat 110 includes a bottom plate 113 and a side wall 114 connected to the bottom plate 113. The side wall 114 extends from the outer edge of the bottom plate 113 toward one side along the axial direction of the fixing seat 110, so that the inner cavity 111 is formed in the fixing seat 110. The inner side of the side wall 114 is also provided with an extension wall 115 extending toward the inner cavity 111. The end surface of the extension wall 115 away from the bottom plate 113 forms a bearing surface 1151 for supporting the turntable 120. When the turntable 120 is mounted on the fixing seat 110, the side wall 114 is provided with an extension wall 115 extending toward the inner cavity 111. In the inner cavity 111 of 10, the supporting surface 1151 contacts the bottom surface of the turntable 120, the inner side surface of the side wall 114 is opposite to the outer side wall 114 of the turntable 120, and the muffler 130 contacts the outer side wall 114 of the turntable 120, so that a rotating cavity 1111 for rotating the turntable 120 is formed in the inner cavity 111, and the accommodating groove 112 is provided between the side wall 114 and the extending wall 115, so that the muffler 130 can abut against the outer side surface of the turntable 120 after being inserted into the accommodating groove 112.

[0022] Further, the accommodating groove 112 includes an upper cavity 1121 and a lower cavity 1122 which are connected to each other. The upper cavity 1121 is recessed outwardly along the radial direction of the fixing seat 110 relative to the inner wall surface of the side wall 114, and the lower cavity 1122 is recessed toward the bottom plate 113 along the axial direction of the fixing seat 110 relative to the supporting surface 1151 of the extension wall 115, and a limiting wall 1152 opposite to the lower cavity 1122 is formed in the extension wall 115, and the upper cavity 1121 extends toward the bottom plate 113 along the height direction of the side wall 114 and is connected to the lower cavity 1122; Figure 4 As shown, Figure 4 The dotted line L2 in the figure is shown as a simulated dividing line between the upper cavity 1121 and the lower cavity 1122. A receiving groove 112 with an L-shaped cross-section connected to the rotating cavity 1111 is formed between the side wall 114 and the extension wall 115. The upper cavity 1121 corresponds to the side wall 114, and the lower cavity 1122 corresponds to the extension wall 115. The intersection of the upper cavity 1121 and the lower cavity 1122 is connected. The outer structure of the silencer 130 can be set as a cube that is compatible with the receiving groove 112, so that a part of the silencer 130 can extend into the rotating cavity 1111 through the L-shaped receiving groove 112.

[0023] Accordingly, the muffler 130 includes a first portion 131 corresponding to the upper cavity 1121 and a second portion 132 corresponding to the lower cavity 1122. Figure 5 and Figure 7 As shown, Figure 5 and Figure 7The dotted line L3 in the figure is shown as a simulated dividing line between the first part 131 and the second part 132. During assembly, the first part 131 extends into the inner cavity 111 through the upper cavity 1121. The first part 131 is squeezed by the turntable 120 and shrinks to form an L-shaped groove body that matches the shape of the turntable 120. The height of the first part 131 is slightly greater than or equal to the height of the turntable 120, so that the outer wall of the turntable 120 can be completely in contact with the silencer 130, thereby improving the stability of the turntable 120; the second part 132 is located in the lower cavity 1122 and is opposite to the limiting wall 1152. The second part 132 of the silencer 130 is further fixed by the second cavity of the accommodating groove 112, thereby improving the stability of the silencer 130 and preventing the silencer 130 from easily falling out of the accommodating groove 112 due to the rotational friction of the turntable 120. In addition, the second part 132 formed when the muffler 130 is squeezed and contracted by the turntable 120 can also contact the bottom surface of the turntable 120 and generate a supporting force for the turntable 120. When the turntable 120 rotates relative to the fixed seat 110, the first part 131 and the second part 132 of the muffler 130 are elastically deformed and absorb the vibration generated by the operation of the turntable 120, so as to achieve the purpose of shock absorption and noise reduction when the aperture module 100 is operated. In addition, since the muffler 130 has the characteristic of elastic deformation, when the turntable 120 stops squeezing the muffler 130, the muffler 130 can slowly rebound and return to its original state, so that the muffler 130 can be reused, reducing the production cost and use cost of the aperture module 100.

[0024] Furthermore, the height of the lower cavity 1122 is 1 / 4 to 1 / 2 of the total height of the receiving groove 112, that is, about 1 / 4 to 1 / 2 of the lower part of the muffler 130 is received in the lower cavity 1122, and about 1 / 2 to 3 / 4 of the upper part of the muffler 130 can extend into the rotating cavity 1111 through the upper cavity 1121 of the receiving groove 112, so as to prevent the muffler 130 from being disengaged from the receiving groove 112 due to the rotating friction of the turntable 120. Preferably, the height of the lower cavity 1122 is 1 / 3 of the total height of the receiving groove 112, and the height of the upper cavity 1121 is 2 / 3 of the total height of the receiving groove 112. For example, the total height of the receiving groove 112 is 1.5 mm, and the height of the lower cavity is preferably 0.5 mm. While ensuring the stability of the silencer 130, the first part 131 of the silencer 130 is also enlarged, that is, the part of the silencer 130 that contacts the outer wall of the turntable 120 is enlarged to ensure that the size of the upper part of the silencer 130 can meet the contact conditions with the outer side of the turntable 120.

[0025] In other embodiments, the notch of the accommodating groove 112 in the side wall 114 is provided with a guide structure, and the guide structure is provided as a guide slope 1123 extending along the bottom of the accommodating groove 112, so that the notch of the accommodating groove 112 in the side wall 114 gradually increases toward the top surface of the side wall 114, so as to facilitate the disassembly, assembly and replacement of the muffler 130. It should be noted that the total height of the accommodating groove 112 does not include the height of the guide slope 1123, and the height of the upper cavity 1121 does not include the height of the guide slope 1123.

[0026] In other embodiments, the accommodating groove 112 is configured as a continuous arc-shaped long groove, both ends of the accommodating groove 112 extend along the circumference of the side wall 114, and the circumference of the accommodating groove 112 is smaller than the circumference of the extending wall 115, and the silencer 130 is configured as a long strip of sheet structure, and the specific structure of the silencer 130 is configured according to the structure of the accommodating groove 112; it is beneficial to further enhance the supporting force of the silencer 130 on the turntable 120, thereby enhancing the stability of the turntable 120.

[0027] In other embodiments, Figure 8 As shown, the receiving grooves 112 are arranged as a plurality of short arc-shaped grooves, and the receiving grooves 112 are arranged at equal intervals along the extension wall 115. The mufflers 130 are arranged in a plurality of corresponding manners, and are installed one by one with the receiving grooves 112. While ensuring that the mufflers 130 have sufficient supporting force on the turntable 120, the mufflers 130 are arranged in sections according to the receiving grooves 112, which reduces the volume of each muffler 130 and facilitates the disassembly and assembly of the mufflers 130. The receiving grooves 112 at least include a head receiving groove 112 and a tail receiving groove 112, and the maximum distance between the head receiving groove 112 and the tail receiving groove 112 is less than the circumference of the extension wall 115.

[0028] In this embodiment, if Figure 8 As shown, the extension wall 115 is a sheet-like annular structure, the extension wall 115 is connected to the side wall 114, and both ends of the extension wall 115 extend along the circumference of the side wall 114. The circumference of the extension wall 115 is 1 / 2 to 2 / 3 of the circumference of the side wall 114, wherein the circumference of the extension wall 115 is preferably 2 / 3 of the circumference of the side wall 114, so as to increase the contact area between the end face of the extension wall 115 and the bottom surface of the turntable 120, thereby improving the supporting force of the extension wall 115 on the turntable 120.

[0029] In this embodiment, if Figure 2As shown, the aperture module 100 further includes a plurality of aperture blades 140 disposed between the fixing seat 110 and the rotating disk 120, and a driving device 150 connected to the rotating disk 120, each of the aperture blades 140 is arranged in an arc shape, and along the arc length direction of the aperture blade 140, the two ends of the aperture blade 140 are respectively provided with a driving end 141 and a driven end 142, and the driving end 141 and the driven end 142 extend outward from both sides of the aperture blade 140 respectively; the rotating disk 120 is penetrated by a first through hole 121 and a plurality of slide grooves 122 adapted to the driving end 141, and each of the slide grooves 122 is arranged at equal intervals along the circumference of the rotating disk 120 and is located On the peripheral side of the first through hole 121, each of the slide grooves 122 extends radially along the turntable 120, and the two ends of the slide groove 122 form a first limiting end 1221 close to the outer edge of the turntable 120 and a second limiting end 1222 close to the first through hole 121; the bottom plate 113 is penetrated by a second through hole 1131 and a plurality of mounting holes 1132 adapted to the driven end 142, and each of the mounting holes 1132 is arranged at equal intervals along the circumference of the bottom plate 113 and is located on the peripheral side of the second through hole 1131; during assembly, the turntable 120 and the fixing seat 110 are coaxially assembled by aligning the first through hole 121 and the second through hole 1131, as shown in FIG. Figure 6 and Figure 7 As shown, a blade accommodating cavity 1112 is formed in the inner cavity 111 between the supporting surface 1151 of the extension wall 115 and the bottom plate 113, and each of the aperture blades 140 is arranged in the blade accommodating cavity 1112. One end of each of the aperture blades 140 is slidably connected to the slide groove 122 in the turntable 120 through the driving end 141, and the other end of each of the aperture blades 140 is rotatably connected to the mounting hole 1132 in the bottom plate 113 through the driven end 142. The aperture blades 140 are staggered around the axial direction of the turntable 120, so that the aperture blades 140 are enclosed to form a light hole 102, which is driven by the driving device 150. The rotating disk 120 rotates and drives the driving end 141 of each aperture blade 140 to slide in the corresponding slide slot 122, that is, the driving end 141 of each aperture blade 140 slides in the corresponding slide slot 122 relative to the first limiting end 1221 and the second limiting end 1222 of the slide slot 122, and at the same time, the driven end 142 of each aperture blade 140 rotates in the corresponding mounting hole 1132, so that each aperture blade 140 switches between the open state and the closed state corresponding to the increase or decrease of the light hole 102, respectively. The first limiting end 1221 and the second limiting end 1222 in each slide slot 122 are used to limit the sliding distance of the driving end 141 of each aperture blade 140. Fig. 9 and Fig.10As shown, when each of the aperture blades 140 is in a closed state, the driving end 141 of each of the aperture blades 140 is at the first limiting end 1221 of the slide slot 122, and the first through hole 121 and the second through hole 1131 are covered by each of the aperture blades 140, and at this time, the light hole 102 is the minimum aperture; when the turntable 120 rotates counterclockwise relative to the fixing seat 110 through the driving device 150, the driving end 141 of each of the aperture blades 140 moves from the first limiting end 1221 to the second limiting end 1222 in the slide slot 122, and at the same time, each The driven end 142 of the aperture blade 140 rotates in the mounting hole 1132, so that each of the aperture blades 140 rotates toward the outside of the first through hole 121 and the second through hole 1131, so that the light-through hole 102 gradually increases. When the driven end 142 of each of the aperture blades 140 is at the second limit end 1222 in the slide groove 122, the area of ​​the first through hole 121 and the second through hole 1131 covered by each of the aperture blades 140 is the smallest, that is, the diameter of the light-through hole 102 reaches the maximum, and each of the aperture blades 140 is switched to an open state. When the rotating disk 120 rotates clockwise relative to the fixing seat 110 through the driving device 150, the driving end 141 of each aperture blade 140 moves from the second limiting end 1222 to the first limiting end 1221 along the slide slot 122, and at the same time, the driven end 142 of each aperture blade 140 rotates relative to the mounting hole 1132, so that the coverage area of ​​each aperture blade 140 on the first through hole 121 and the second through hole 1131 gradually increases, that is, the light through hole 102 gradually shrinks, so that each aperture blade 140 is converted to a closed state. The sliding distance of the driving end 141 of each aperture blade 140 is limited by the first limiting end 1221 and the second limiting end 1222 in each slide slot 122, thereby limiting the rotation range of each aperture blade 140, so as to ensure the normal use of the aperture module 100.

[0030] Furthermore, in order to ensure that each aperture blade 140 rotates smoothly, a gasket 1133 corresponding to each mounting hole 1132 is provided on the bottom plate 113 of the fixed seat 110, and each gasket 1133 extends from the bottom plate 113 toward the inner cavity 111, and each driven end 142 of each aperture blade 140 is connected to the corresponding mounting hole 1132, and each aperture blade 140 abuts against the corresponding gasket 1133. The contact area between each aperture blade 140 and the bottom plate 113 is reduced by each gasket 1133, thereby reducing the rotational friction force on each aperture blade 140, so that each aperture blade 140 can open and close more smoothly.

[0031] Further, such as Figure 1 and Figure 4As shown in FIG. 7 , the driving device 150 includes a motor 151 and a transmission member 152 which is transmission-connected to the motor 151. The outer edge of the turntable 120 is provided with a matching portion 124 which is rotationally connected to the transmission member 152. The transmission member 152 is driven to rotate by the motor 151, and transmission is generated by the transmission member 152 and the matching portion 124, thereby driving the turntable 120 to rotate in the inner cavity 111. In this embodiment, a mounting portion 117 for mounting a driving device 150 is provided on one side of the fixing seat 110, and the mounting portion 117 is provided with a mounting cavity communicated with the inner cavity 111 and an opening 1171 communicated with the mounting cavity. The motor 151 is arranged outside the fixing seat 110, and the motor 151 shaft of the motor 151 extends into the mounting cavity from the opening 1171. The transmission member 152 is placed in the mounting cavity and fixedly connected to the motor 151 shaft. The transmission member 152 is opposite to the matching portion 124 of the turntable 120, and the turntable 120 abuts on the supporting surface 1151 of the extension wall 115, and the matching portion 124 of the turntable 120 is meshedly connected with the transmission member 152. The transmission member 152 is driven to rotate by the motor 151, and transmission is generated between the transmission member 152 and the matching portion 124, thereby driving the turntable 120 to rotate axially relative to the fixing seat 110. The motor 151 is driven to drive the turntable 120 in combination with the meshing transmission, so that the transmission efficiency is high and the aperture is opened and closed quickly. In addition, the motor 151 is connected to a lever 153, and the motor 151 can be started by operating the lever 153 by the user.

[0032] In other embodiments, Figure 1 , Fig.12 and Fig.13 As shown, a positioning block 123 is further provided on one side of the turntable 120, and the positioning block 123 extends along the outer edge of the turntable 120 toward the bottom plate 113. A limiting groove 116 is further provided in the fixed seat 110 and is located on one side of the extension wall 115. The limiting groove 116 is connected to the inner cavity 111 and both ends extend along the circumferential direction of the side wall 114. The positioning block 123 of the turntable 120 can extend into the limiting groove 116, and the rotation of the turntable 120 can drive the extension block to rotate synchronously in the limiting groove 116, and the rotation range of the turntable 120 is limited by the limiting groove 116. In this embodiment, the positioning block 123 in the rotating disk 120 is arranged close to the matching portion 124, one end of the limiting groove 116 is close to the mounting portion 117, and the other end is far away from the mounting portion 117, and the two ends of the limiting groove 116 respectively form the limiting surfaces of the positioning block 123 through the left and right end surfaces of the extending wall 115; Fig.12As shown, when each of the aperture blades 140 is in a closed state, the positioning block 123 is located at one end of the limiting groove 116 away from the mounting portion 117, and when the turntable 120 rotates counterclockwise relative to the fixing seat 110 through the driving device 150, the positioning block 123 is driven to rotate counterclockwise in the limiting groove 116, so that the positioning block 123 rotates along the limiting groove 116 toward the mounting seat, so that each of the aperture blades 140 is converted from a closed state to an open state; Fig.13 As shown, when the turntable 120 rotates clockwise relative to the fixing seat 110 through the driving device 150, the positioning block 123 is driven to rotate clockwise in the limiting groove 116, so that the positioning block 123 rotates along the limiting groove 116 in a direction away from the mounting seat, so that each aperture blade 140 is converted from an open state to a closed state; the rotation range of the positioning block 123 is limited by the limiting groove 116, and the rotation range of the turntable 120 is further limited to ensure the normal operation of the aperture module 100; secondly, the turntable 120 rotates in the limiting groove 116 through the positioning block 123, which enhances the rotation stability of the turntable 120. In this embodiment, Figure 8 As shown, the limiting groove 116 is an annular groove, and the limiting groove 116 and the extension wall 115 are located in the same circumference of the fixing seat 110, and the circumference of the limiting groove 116 is 1 / 3 to 1 / 2 of the circumference of the side wall 114. Preferably, the circumference of the limiting groove 116 is approximately 1 / 3 of the circumference of the side wall 114, and correspondingly, the circumference of the extension wall 115 is preferably approximately 2 / 3 of the circumference of the side wall 114. Integrating the extension wall 115 and the limiting groove 116 in the fixing seat 110 is beneficial to simplifying the assembly of the components in the aperture module 100, so as to improve the production efficiency of the aperture module 100.

[0033] In some embodiments, the turntable 120 is integrally formed as a whole, and the fixing seat 110 is integrally formed as a whole, which is beneficial to simplify the manufacturing process of the turntable 120 and the fixing seat 110 to improve the production efficiency of the aperture module 100 .

[0034] In this embodiment, the aperture module 100 also includes a seat cover 160, which is arranged on the front side of the fixed seat 110 along the front-to-back direction, and the inner cavity 111 of the fixed seat 110 is closed by the seat cover 160. The seat cover 160 also has a third through hole 161. During installation, the seat cover 160, the turntable 120 and the fixed seat 110 are respectively installed in alignment through the third through hole 161, the first through hole 121 and the second through hole 1131.

[0035] In some embodiments, the seat cover 160 and the fixing seat 110 are detachably connected, such as by snap connection, shaft hole plug-in, threaded connection, etc. Figure 1 As shown, in this embodiment, the outer wall of the fixing seat 110 is provided with a plurality of slots 118, and a snap-fitting piece 119 is provided in any of the slots 118. The seat cover 160 is provided with connecting pieces 162 corresponding to the snap-fitting pieces 119, and any of the connecting pieces 162 is provided with a connecting port 163 matched with the snap-fitting piece 119, and the connecting port 163 extends toward the top surface of the seat cover 160 along the height direction of the connecting piece 162, and is buckled in the connecting port 163 through each of the snap-fitting pieces 119, so that the seat cover 160 is installed on the fixing seat 110.

[0036] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An aperture module, characterized in that: The invention comprises a fixed seat (110) and a rotating disk (120), wherein the fixed seat (110) is provided with an inner cavity (111), and the rotating disk (120) is axially rotatably arranged in the inner cavity (111), and the fixed seat (110) is further provided with a receiving groove (112) which is in communication with the inner cavity (111), the receiving groove (112) is opposite to the rotating disk (120), and a gap (101) is formed between the rotating disk (120) and the fixed seat (110), and a silencer (130) is installed in the receiving groove (112), and at least a part of the silencer (130) extends into the inner cavity (111) through the receiving groove (112), and passes through the gap (101) to contact the rotating disk (120), and the silencer (130) is elastically deformed by being squeezed by the rotating disk (120).

2. An aperture module as claimed in claim 1, characterized in that: The fixing seat (110) comprises a bottom plate (113) and a side wall (114) connected to the bottom plate (113); the side wall (114) extends from the outer edge of the bottom plate (113) toward one side along the axial direction of the fixing seat (110); an extension wall (115) extending toward the inner cavity (111) is further provided on the inner side of the side wall (114); an end surface of the extension wall (115) away from the bottom plate (113) forms a supporting surface (1151) for supporting the rotating disk (120); and the accommodating groove (112) is provided between the side wall (114) and the extension wall (115).

3. An aperture module as claimed in claim 2, characterized in that: The receiving groove (112) comprises an upper cavity (1121) and a lower cavity (1122) which are connected to each other; the upper cavity (1121) is recessed outwardly along the radial direction of the fixing seat (110) relative to the inner wall surface of the side wall (114); the lower cavity (1122) is recessed toward the bottom plate (113) along the axial direction of the fixing seat (110) relative to the supporting surface (1151) of the extension wall (115); a limiting wall (1152) opposite to the lower cavity (1122) is formed in the extension wall (115); the upper cavity (1121) extends toward the bottom plate (113) along the height direction of the side wall (114) and is connected to the lower cavity (1122); the height of the lower cavity (1122) is 1 / 4 to 1 / 2 of the total height of the receiving groove (112); The silencer (130) comprises a first portion (131) corresponding to the upper cavity (1121) and a second portion (132) corresponding to the lower cavity (1122); the first portion (131) extends into the inner cavity (111) through the upper cavity (1121); a height of the first portion (131) is slightly greater than or equal to a height of the turntable (120); and the second portion (132) is located in the lower cavity (1122) and is opposite to the limiting wall (1152).

4. An aperture module as claimed in claim 2, characterized in that: Both ends of the extension wall (115) extend along the circumference of the side wall (114), and the circumference of the extension wall (115) is 1 / 2 to 2 / 3 of the circumference of the side wall (114).

5. The aperture module according to claim 2, characterized in that: The aperture module (100) further comprises a plurality of aperture blades (140) arranged between the fixing seat (110) and the rotating disk (120), and a driving device (150) connected to the rotating disk (120); each of the aperture blades (140) is arranged in an arc shape, and a driving end (141) and a driven end (142) are respectively provided at two ends of the aperture blade (140); a first through hole (121) and a plurality of sliding grooves (122) adapted to the driving ends (141) are penetrated in the rotating disk (120). , each of the slide grooves (122) is arranged at equal intervals along the circumference of the rotating disk (120) and is located on the circumference of the first through hole (121), and each of the slide grooves (122) extends in the radial direction of the rotating disk (120); a second through hole (1131) and a plurality of mounting holes (1132) adapted to the driven end (142) are penetrated in the bottom plate (113), and each of the mounting holes (1132) is arranged at equal intervals along the circumference of the bottom plate (113) and is located on the circumference of the second through hole (1131); The rotating disk (120) and the fixing seat (110) are arranged coaxially by aligning the first through hole (121) and the second through hole (1131); the driving end (141) of each aperture blade (140) is slidably connected to each slide groove (122) in a one-to-one correspondence; the driven end (142) of each aperture blade (140) is rotationally connected to each mounting hole (1132) in a one-to-one correspondence; the aperture blades (140) are staggered around the axial direction of the rotating disk (120) so that the aperture blades (140) are surrounded by each other to form a light-through hole (102); and the light-through hole (102) can be connected to the first through hole (121) and the second through hole (1131); The driving device (150) drives the rotating disk (120) to rotate, and drives the driving end (141) of each aperture blade (140) to slide in the sliding groove (122), and at the same time, the driven end (142) of each aperture blade (140) rotates in the mounting hole (1132), so that each aperture blade (140) switches between an open state and a closed state corresponding to an increase in the light hole (102) and a decrease in the light hole (102), respectively.

6. An aperture module as claimed in claim 5, characterized in that: A first limiting end (1221) and a second limiting end (1222) are respectively provided at both ends of each slide groove (122), and the sliding distance of the driving end (141) of the aperture blade (140) in the slide groove (122) is limited by the first limiting end (1221) and the second limiting end (1222).

7. An aperture module as claimed in claim 5, characterized in that: A positioning block (123) is also provided on one side of the rotating disk (120), and the positioning block (123) extends along the outer edge of the rotating disk (120) toward the bottom plate (113). A limiting groove (116) is also provided in the fixing seat (110) and is located on one side of the extension wall (115). The limiting groove (116) is communicated with the inner cavity (111) and has two ends extending along the circumferential direction of the side wall (114). The positioning block (123) of the rotating disk (120) can extend into the limiting groove (116), and the rotation of the rotating disk (120) drives the extension block to rotate synchronously in the limiting groove (116), and the rotation range of the rotating disk (120) is limited by the limiting groove (116). A plurality of washers (1133) corresponding to the mounting holes (1132) are provided on the bottom plate (113), and each of the washers (1133) extends from the bottom plate (113) toward the inner cavity (111).

8. The aperture module according to claim 5, characterized in that: The driving device (150) comprises a motor (151) and a transmission member (152) transmission-connected to the motor (151); a matching portion (124) rotationally connected to the transmission member (152) is provided on the outer edge of the turntable (120); the transmission member (152) is driven to rotate by the motor (151), and transmission is generated between the transmission member (152) and the matching portion (124), thereby driving the turntable (120) to rotate in the inner cavity (111).

9. A lens device, characterized in that: Comprising the aperture module (100) as described in any one of claims 1 to 8.

10. A photographic device, characterized in that: Comprising the lens device as claimed in claim 9.

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