Aperture module, lens device and photographic equipment

Abstract

The utility model relates to the technical field of aperture devices, and relates 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 utility model relates to the technical field of aperture devices, in particular to an aperture module, a lens device and photographic equipment. Background Art

[0002] Aperture devices are widely used in cameras, video cameras, microscopes, telescopes, and other devices. They control the amount of light passing through the lens and entering the sensory surface of the camera body. Aperture devices typically consist of an aperture holder, a drive ring, and several aperture blades. The drive ring and the aperture blades are rotatably mounted within the aperture holder, forming a light aperture between the blades. The drive ring is connected to an additional drive mechanism, which drives the drive ring to rotate within the aperture holder. The drive ring also drives the aperture blades to expand or contract the light aperture, changing the aperture size during photography or video recording to adjust the amount of light entering. However, in existing aperture devices, due to the direct contact between the drive ring and the aperture holder, friction between the two is high during operation. This generates a high level of noise during rotation, which is recorded in the video, resulting in a poor viewing experience for the user.

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

[0004] The present invention addresses the problem that in the above-mentioned existing aperture device, the 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 utility model to solve its technical problems is:

[0006] An aperture module includes a fixed seat and a turntable. The fixed seat is provided with an inner cavity. The turntable is axially rotatably arranged in the inner cavity. 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. A silencer is installed in the receiving groove. At least a portion of the silencer extends into the inner cavity through the receiving groove and contacts the turntable through the gap. The silencer is elastically deformed by the squeezing of the turntable.

[0007] As described above, the aperture module comprises a base plate and a side wall connected to the base plate, wherein the side wall extends from the outer edge of the base plate toward one side along the axial direction of the fixed base, and the inner side of the side wall is further provided with an extension wall extending toward the inner cavity, and 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.

[0008] As described above, the aperture module, the accommodating groove includes an upper cavity and a lower cavity that are connected to each other, the upper cavity is recessed outward 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 includes 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.

[0009] 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.

[0010] The aperture module as described above further comprises 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 provided 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 respectively 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 through hole 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 to form a light-through hole, and the light-through hole can be connected to 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 at the same time, the driven end of each aperture blade rotates in the mounting hole, so that each aperture blade switches to an open state and a closed state corresponding to the increase and decrease of the light-through hole, respectively.

[0011] 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 first limiting end and the second limiting end limit the sliding distance of the driving end of the aperture blade in the slide groove.

[0012] As for the aperture module as described above, a positioning block is further provided on one side of the turntable, and the positioning block extends along the outer edge of the turntable toward the base plate, and a limiting groove is further provided in the fixing seat on one side of the extension wall, and the limiting groove is connected to the inner cavity and the two ends extend along the circumference 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 base plate, and each of the washers extends from the base plate toward the inner cavity.

[0013] 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 by the transmission member and the matching portion, thereby driving the turntable to rotate in the inner cavity.

[0014] The utility model also provides a lens device, comprising the aperture module as described above.

[0015] The utility model also provides a photographic device, comprising the lens device as described above.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The present application provides an aperture module, which can be installed in a lens device, and the lens device can be used in photographic equipment. The 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 provided in the fixed seat, and 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 elastic deformation of the silencer absorbs the vibration of the turntable, thereby achieving the purpose of shock absorption and noise reduction when the aperture module is actuated, meeting the requirements of the photographic equipment for silent aperture actuation when recording video.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the aperture module of the present invention;

[0020] Figure 2 This is an exploded view of the aperture module of the present invention;

[0021] Figure 3 This is a top view of the aperture module of the present invention (with the base cover and turntable hidden);

[0022] Figure 4 for Figure 3 A-A section Figure 1 (Hide the seat cover, turntable, aperture blades and silencer);

[0023] Figure 5 for Figure 3 A-A section Figure 2 (Hides the mount, dial and aperture blades);

[0024] Figure 6 for Figure 3 A-A section Figure 3 (Including seat cover, turntable, aperture blades and silencer);

[0025] Figure 7 for Figure 6 A magnified view of part B in FIG;

[0026] Figure 8 A top view of the fixing seat of the aperture module of the present invention;

[0027] Figure 9 A top view of the fixing seat, aperture blades and rotating disk of the aperture module of the present invention;

[0028] Figure 10 for Figure 9 A magnified view of part C;

[0029] Figure 11 This is a side view of the aperture module of the present invention;

[0030] Figure 12 for Figure 11 D-D section in Figure 1 ;

[0031] Figure 13 for Figure 11 D-D section in Figure 2 . DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0033] like Figure 1As shown in FIG13 , the present invention provides an aperture module 100, which can be installed in a lens device, and the lens device can be applied to a photographic device. Specifically, the aperture module 100 includes a fixing seat 110 and a turntable 120, the turntable 120 and the fixing seat 110 are detachably connected along the front-back direction, the fixing seat 110 is provided with an inner cavity 111, the turntable 120 is axially rotatably arranged in the inner cavity 111, and the fixing seat 110 is further provided with a The receiving groove 112 is connected to 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 fixing seat 110. A muffler 130 is installed in the receiving groove 112. At least a portion of the muffler 130 extends into the inner cavity 111 through the receiving groove 112 and contacts the rotating disk 120 through the gap 101. The muffler 130 is elastically deformed by the compression of the rotating disk 120. Figure 6 and Figure 7 As shown, during assembly, the turntable 120 is 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 as shown in FIG. Figure 2 The central axis L1 shown rotates relative to the fixing seat 110 in the inner cavity 111, and the turntable 120 also rotates relative to the silencer 130, causing the turntable 120 to vibrate and form an extrusion pressure 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 fixing seat 110 through the silencer 130. The elastic deformation of the silencer 130 absorbs the vibration of the turntable 120, 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 actuation when recording video.

[0034] In some embodiments, the muffler 130 is made of muffler cotton with a porous structure, such as polyester sound-absorbing cotton, etc. Figure 5 As shown in FIG7, during assembly, the silencer cotton is directly installed into the receiving groove 112, as shown in FIG7. 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 accommodating groove 112. After the turntable 120 is installed, the silencer cotton is squeezed and contracted by the turntable 120, that is, the silencer cotton is compressed by the turntable 120. Figure 7The silencer 130 in the inner cavity is in a compressed state, and the silencer 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 silencer cotton shrinks, the thickness of the portion extending into the inner cavity 111 is equal to the distance of the gap 101, so that the silencer cotton can provide corresponding support force for the turntable 120, enhance the stability of the turntable 120, and at the same time maintain a small gap between the turntable 120 and the fixing base 110. Gap 101 reduces friction between the turntable 120 and the fixed base 110 during operation, thereby achieving the purpose of reducing vibration and noise during the operation of the aperture module 100, meeting the camera's requirement for silent aperture operation during video recording. Because the silencer 130 has elastic deformation properties, when the turntable 120 releases the pressure on the silencer 130, the silencer 130 slowly rebounds and returns to its original shape, making the silencer 130 reusable, reducing the production and use costs of the aperture module 100. Furthermore, the sound-absorbing cotton has excellent sound absorption properties, further absorbing noise during the operation of the aperture module 100, effectively preventing the camera from recording the noise of the aperture operation during video recording. In addition, since the silencer cotton will be compressed by the turntable 120 during assembly, the structural strength of the silencer cotton is enhanced, which can effectively prevent the silencer 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 fixing seat 110 should not be too large, and the receiving groove 112 needs to have a certain depth to accommodate most of the silencer cotton, so that the silencer cotton is not easy to fall out of the receiving groove 112.

[0035] In this embodiment, if Figure 6 As shown, the fixing base 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 base 110 to form the inner cavity 111 in the fixing base 110. The inner side of the side wall 114 is further 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 supporting surface 1151 for supporting the turntable 120. When the turntable 120 is mounted on the fixing base 110, the turntable 120 is supported by the support surface 1151. 10, the supporting surface 1151 contacts the bottom surface of the turntable 120, the inner surface of the side wall 114 is opposite to the outer wall 114 of the turntable 120, and the muffler 130 contacts the outer wall 114 of the turntable 120, so that a rotating chamber 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 surface of the turntable 120 after being inserted into the accommodating groove 112.

[0036] Furthermore, the accommodating groove 112 includes an upper cavity 1121 and a lower cavity 1122 that 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. 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 adapted to 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.

[0037] 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 and contracted by the turntable 120 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 in the lower cavity 1122 and 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. Furthermore, when the turntable 120 compresses and contracts, the second portion 132 formed by the muffler 130 can also contact the bottom surface of the turntable 120, providing support for the turntable 120. When the turntable 120 rotates relative to the fixed base 110, the first portion 131 and second portion 132 of the muffler 130 elastically deform and absorb the vibration generated by the movement of the turntable 120, thereby achieving the purpose of reducing vibration and noise during the operation of the aperture module 100. Furthermore, due to the elastic deformation properties of the muffler 130, when the turntable 120 releases its compression, the muffler 130 slowly rebounds and returns to its original shape, making the muffler 130 reusable and reducing the production and operating costs of the aperture module 100.

[0038] 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, approximately 1 / 4 to 1 / 2 of the lower portion of the muffler 130 is accommodated in the lower cavity 1122, and approximately 1 / 2 to 3 / 4 of the upper portion of the muffler 130 can extend into the rotating cavity 1111 through the upper cavity 1121 of the receiving groove 112, thereby preventing the muffler 130 from falling out of the receiving groove 112 due to the rotational 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, if the total height of the receiving groove 112 is 1.5 mm, 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, ensuring that the size of the upper part of the silencer 130 can meet the contact conditions with the outer surface of the turntable 120.

[0039] In other embodiments, the notch of the accommodating groove 112 in the side wall 114 is provided with a guide structure, which is configured as a guide slope 1123 extending along the bottom of the accommodating groove 112. This allows the notch of the accommodating groove 112 in the side wall 114 to gradually increase in size toward the top surface of the side wall 114, thereby facilitating the removal, assembly, and replacement of the silencer 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 also does not include the height of the guide slope 1123.

[0040] In other embodiments, the accommodating groove 112 is configured as a continuous arc-shaped long groove, the two 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 extension wall 115, and the silencer 130 is configured as a long strip of sheet structure. 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.

[0041] In other embodiments, Figure 8 As shown, the receiving grooves 112 are configured as a plurality of short arc-shaped grooves, each of which is evenly spaced along the extension wall 115. A corresponding number of mufflers 130 are provided, each corresponding to each receiving groove 112. While ensuring that the mufflers 130 provide sufficient support for the turntable 120, the mufflers 130 are arranged in sections according to the receiving grooves 112, reducing the size of each muffler 130 and facilitating assembly and disassembly of the mufflers 130. The receiving grooves 112 include at least 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.

[0042] In this embodiment, if Figure 8 As shown, the extension wall 115 is a sheet-like annular structure, and the extension wall 115 is connected to the side wall 114. The two 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, and 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.

[0043] 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 turntable 120, and a driving device 150 connected to the turntable 120. Each of the aperture blades 140 is arranged in an arc shape, and along the arc length direction of the aperture blade 140, a driving end 141 and a driven end 142 are respectively provided at both ends of the aperture blade 140, and the driving end 141 and the driven end 142 extend outward from both sides of the aperture blade 140 respectively; a first through hole 121 and a plurality of slide grooves 122 adapted to the driving end 141 are penetrated in the turntable 120, and each of the slide grooves 122 is arranged at equal intervals along the circumference of the turntable 120 and is positioned On the circumferential 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 evenly spaced along the circumference of the bottom plate 113 and is located on the circumferential 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. Each of the aperture blades 140 is disposed 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 via the driving end 141. The other end of each of the aperture blades 140 is rotatably connected to the mounting hole 1132 in the bottom plate 113 via the driven end 142. The aperture blades 140 are staggered around the axial direction of the turntable 120 so that a light hole 102 is enclosed between the aperture blades 140. The aperture blades 140 are driven by the driving device 150. The turntable 120 rotates and drives the driving end 141 of each aperture blade 140 to slide in the corresponding slide groove 122, that is, the driving end 141 of each aperture blade 140 slides in the corresponding slide groove 122 relative to the first limiting end 1221 and the second limiting end 1222 of the slide groove 122. 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 an open state and a closed state corresponding to the enlargement or reduction of the light hole 102, respectively. The first limiting end 1221 and the second limiting end 1222 in each slide groove 122 are used to limit the sliding distance of the driving end 141 of each aperture blade 140. Figure 9 and Figure 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 groove 122, and the first through hole 121 and the second through hole 1131 are covered by each of the aperture blades 140. At this time, the light hole 102 is at 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 groove 122, and at the same time, each of the aperture blades 140 is in a closed state. 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 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 hole 102 reaches the maximum, and each of the aperture blades 140 is converted to an open state. When the turntable 120 rotates clockwise relative to the fixed base 110 via the driving device 150, the driving end 141 of each aperture blade 140 moves along the slide groove 122 from the second limiting end 1222 to the first limiting end 1221. Simultaneously, the driven end 142 of each aperture blade 140 rotates relative to the mounting hole 1132, gradually increasing the coverage area of the first through hole 121 and the second through hole 1131 by each aperture blade 140. In other words, the light-through hole 102 gradually shrinks, thereby switching each aperture blade 140 to a closed state. The first limiting end 1221 and the second limiting end 1222 in each slide groove 122 limit the sliding distance of the driving end 141 of each aperture blade 140, thereby limiting the rotation range of each aperture blade 140, thereby ensuring normal operation of the aperture module 100.

[0044] 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 fixing seat 110, and each gasket 1133 extends from the bottom plate 113 toward the inner cavity 111. The 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.

[0045] 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 that is transmission-connected to the motor 151. The outer edge of the turntable 120 is provided with a mating portion 124 that 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 mating 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 base 110. 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 on the outside of the fixing base 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. The turntable 120 abuts on the supporting surface 1151 of the extension wall 115, and the matching portion 124 of the turntable 120 is meshed 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 base 110. The motor 151 is driven by a meshing transmission to drive the turntable 120, which has high transmission efficiency and fast aperture opening and closing speed. In addition, the motor 151 is connected to a lever 153, which can be operated by a user to start the motor 151.

[0046] In other embodiments, Figure 1 、 Figure 12 and Figure 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 fixing seat 110 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 be extended 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 turntable 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 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 extension wall 115; Figure 12As shown, when each of the aperture blades 140 is in the closed state, the positioning block 123 is located at the end of the limiting groove 116 away from the mounting portion 117. When the turntable 120 is rotated counterclockwise relative to the fixing seat 110 by 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 switched from the closed state to the open state; Figure 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, thereby enhancing the rotation stability of the turntable 120. In this embodiment, as 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. 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. 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 conducive to simplifying the assembly of various components in the aperture module 100, so as to improve the production efficiency of the aperture module 100.

[0047] In some embodiments, the turntable 120 and the fixing base 110 are integrally formed, which is beneficial to simplifying the manufacturing process of the turntable 120 and the fixing base 110 and improving the production efficiency of the aperture module 100 .

[0048] In this embodiment, the aperture module 100 also includes a seat cover 160, which is arranged on the front side of the fixing seat 110 in the front-to-back direction, and the inner cavity 111 of the fixing seat 110 is closed by the seat cover 160. A third through hole 161 is also passed through the seat cover 160. During installation, the seat cover 160, the turntable 120 and the fixing seat 110 are respectively installed in alignment through the third through hole 161, the first through hole 121 and the second through hole 1131.

[0049] In some embodiments, the seat cover 160 and the fixing seat 110 are detachably connected, such as a snap connection, an axial hole plug connection, a 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 fastener 119 is provided in any slot 118, and the seat cover 160 is provided with a connecting member 162 corresponding to each of the fasteners 119, and any of the connecting members 162 is provided with a connecting port 163 that cooperates with the fastener 119, and the connecting port 163 extends toward the top surface of the seat cover 160 along the height direction of the connecting member 162, and is buckled into the connecting port 163 through each of the fasteners 119, so that the seat cover 160 is installed on the fixing seat 110.

[0050] The above examples are merely used to further illustrate the technical content of the present invention for easier understanding by the reader. However, they do not limit the implementation of the present invention to these examples. Any technical extension or reinvention based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by 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) communicating with the inner cavity (111), wherein 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 portion 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. The aperture module according to claim 1, wherein: The fixing seat (110) comprises a bottom plate (113) and a side wall (114) connected to the bottom plate (113), wherein 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), and an extension wall (115) extending toward the inner cavity (111) is further provided on the inner side of the side wall (114), wherein the end surface of the extension wall (115) away from the bottom plate (113) forms a supporting surface (1151) for supporting the turntable (120), and the accommodating groove (112) is provided between the side wall (114) and the extension wall (115).

3. The aperture module according to claim 2, wherein: The accommodating 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 in 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) in 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 accommodating groove (112). The silencer (130) includes a first portion (131) corresponding to the upper cavity (1121) and a second portion (132) corresponding to the lower cavity (1122), wherein the first portion (131) extends into the inner cavity (111) through the upper cavity (1121), and the height of the first portion (131) is slightly greater than or equal to the height of the turntable (120); the second portion (132) is located in the lower cavity (1122) and is opposite to the limiting wall (1152).

4. The aperture module according to claim 2, wherein: 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, wherein: 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), wherein 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), and a first through hole (121) and a plurality of sliding grooves (122) adapted to the driving end (141) are provided through the rotating disk (120). , each of the slide grooves (122) is arranged at equal intervals along the circumference of the turntable (120) and is located on the circumference of the first through hole (121), and each of the slide grooves (122) extends along the radial direction of the turntable (120); a second through hole (1131) and a plurality of mounting holes (1132) adapted to the driven end (142) are provided 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 turntable (120) and the fixed seat (110) are coaxially arranged by aligning the first through hole (121) and the second through hole (1131), the driving end (141) of each aperture blade (140) is slidingly 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, and 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), and the light hole (102) can be connected to the first through hole (121) and the second through hole (1131); The driving device (150) drives the turntable (120) to rotate, and drives the driving end (141) of each aperture blade (140) to slide in the slide 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 enlargement of the light hole (102) and a reduction of the light hole (102), respectively.

6. The aperture module according to claim 5, wherein: 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. The aperture module according to claim 5, wherein: 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 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 circumference of the side wall (114). The positioning block (123) of the turntable (120) can be extended into the limiting groove (116), and the rotation of the turntable (120) drives 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). 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, wherein: The driving device (150) includes a motor (151) and a transmission member (152) connected to the motor (151). The outer edge of the turntable (120) is provided with a matching portion (124) connected to the transmission member (152). The motor (151) drives the transmission member (152) to rotate, and the transmission member (152) and the matching portion (124) generate transmission, thereby driving the turntable (120) to rotate in the inner cavity (111).

9. A lens device, characterized in that: Comprising the aperture module (100) according to 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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