An aperture module, lens assembly, and photographic equipment

Abstract

This invention relates to the technical field of aperture devices, specifically to an aperture module, lens assembly, and photographic equipment. The aperture module includes a fixed base and a turntable. The fixed base has an inner cavity, within which the turntable is axially rotatable. The fixed base also has a receiving groove communicating with the inner cavity, opposite to the turntable, with a gap forming between the turntable and the fixed base. A sound-absorbing component is installed within the receiving groove, at least a portion of which extends through the receiving groove into the inner cavity and through the gap to contact the turntable. The sound-absorbing component undergoes elastic deformation under the pressure of the turntable. The turntable, under external force, can rotate relative to the fixed base within the inner cavity around its central axis. Simultaneously, the turntable also rotates relative to the sound-absorbing component. The turntable is indirectly connected to the fixed base via the sound-absorbing component. The elastic deformation of the sound-absorbing component absorbs the vibration of the turntable, thereby achieving vibration reduction and noise reduction during aperture module operation, meeting the requirements of silent aperture operation in photographic equipment during video recording.

Description

Technical Field

[0001] This invention relates to the technical field of aperture devices, and more particularly to an aperture module, lens device, and photographic equipment. Background Technology

[0002] Aperture mechanisms are widely used in cameras, camcorders, microscopes, telescopes, and other equipment. They are devices used to control the amount of light passing through the lens and entering the sensory area of ​​the camera body. An aperture mechanism typically includes an aperture mount, a drive ring, and several aperture blades. The drive ring and the aperture blades are rotatably mounted within the aperture mount, forming a light-gathering aperture between the blades. The drive ring is connected to an additional drive mechanism, which rotates the drive ring within the aperture mount, and in turn, drives the aperture blades to rotate, thus expanding or contracting the light-gathering aperture. During photography or video recording, the amount of light entering the camera is changed by altering the aperture size. However, in existing aperture mechanisms, because the drive ring is in direct contact with the aperture mount, the friction between the drive ring and the aperture mount is relatively high during aperture operation. This generates significant noise when the drive ring rotates, which is recorded into the video, resulting in a poor viewing experience for the user.

[0003] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0004] In view of the problem mentioned above in the existing aperture device, where the drive ring is in direct contact with the aperture mount and generates a lot of noise when the drive ring rotates, the noise will be recorded into the video during recording, resulting in a poor viewing experience for the user. The present invention proposes an aperture module, lens device and photographic equipment.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] An aperture module includes a mounting base and a turntable. The mounting base has an inner cavity, and the turntable is rotatably disposed in the inner cavity. The mounting base also has a receiving groove communicating with the inner cavity. The receiving groove is opposite to the turntable, and a gap is formed between the turntable and the mounting base. A noise-absorbing component is installed in the receiving groove. At least a portion of the noise-absorbing component extends into the inner cavity through the receiving groove and passes through the gap to contact the turntable. The noise-absorbing component undergoes elastic deformation under the pressure of the turntable.

[0007] As described above, in an aperture module, the mounting base 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 along the axial direction of the mounting base to one side. The inner side of the side wall is also provided with an extension wall extending toward the inner cavity. The end face of the extension wall away from the base plate forms a support surface for supporting the turntable. The receiving groove is disposed between the side wall and the extension wall.

[0008] In an aperture module as described above, the receiving groove includes an upper cavity and a lower cavity that are connected to each other. The upper cavity is recessed radially outward from the inner wall surface of the side wall relative to the fixing seat. The lower cavity is recessed axially towards the base plate from the supporting surface of the extension wall relative to the fixing seat. A limiting wall opposite to the lower cavity is formed in the extension wall. The upper cavity extends towards the base plate along the height direction of the side wall and is connected to the lower cavity. The height of the lower cavity is 1 / 4 to 1 / 2 of the total height of the receiving groove. The noise-absorbing component 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 located in the lower cavity and is opposite to the limiting wall.

[0009] In one aperture module as described above, the two ends of the extension wall extend circumferentially along the side wall, and the circumference of the extension wall is 1 / 2 to 2 / 3 of the circumference of the side wall.

[0010] An aperture module as described above further includes multiple aperture blades disposed between the fixed base and the turntable, and a driving device connected to the turntable. Each aperture blade is arc-shaped, and each aperture blade has a driving end and a driven end at its two ends. The turntable has a first through hole and multiple sliding grooves adapted to the driving end. Each sliding groove is equally spaced along the circumference of the turntable and located on the periphery of the first through hole, and each sliding groove extends radially along the turntable. The base plate has a second through hole and multiple mounting holes adapted to the driven end. Each mounting hole is equally spaced along the circumference of the base plate and located on the periphery of the second through hole. The drive module is constructed by passing through the first through hole and the second through hole. The two through holes are aligned to make the turntable and the fixed base coaxially arranged. The driving end of each aperture blade is slidably connected to each of the sliding grooves, and the driven end of each aperture blade is rotatably connected to each of the mounting holes. The aperture blades are staggered around the axis of the turntable so that they form a light-transmitting hole. The light-transmitting hole can communicate with the first through hole and the second through hole. The turntable is driven to rotate by the driving device, which drives the driving end of each aperture blade to slide in the sliding groove. At the same time, the driven end of each aperture blade rotates in the mounting hole, so that each aperture blade switches between an open state and a closed state corresponding to the increase and decrease of the light-transmitting hole, respectively.

[0011] In the aperture module described above, each of the slide grooves has a first limiting end and a second limiting end at both ends, which limit the sliding distance of the driving end of the aperture blade within the slide groove.

[0012] As described above, in an aperture module, a positioning block is provided on one side of the turntable. The positioning block extends along the outer edge of the turntable toward the base plate. A limiting groove is also provided in the fixing seat on one side of the extension wall. The limiting groove communicates with the inner cavity and extends circumferentially along the side wall at both ends. The positioning block of the turntable can extend into the limiting groove. The rotation of the turntable drives the extension block to rotate synchronously in the limiting groove, and the limiting groove limits the rotation range of the turntable. The base plate is provided with a plurality of washers corresponding to each of the mounting holes, and each washer extends from the base plate toward the inner cavity.

[0013] As described above, in an aperture module, the driving device includes a motor and a transmission component that is pulsatorically connected to the motor. The outer edge of the turntable is provided with a mating part that is rotatably connected to the transmission component. The motor drives the transmission component to rotate, and the transmission component and the mating part generate transmission, thereby driving the turntable to rotate in the inner cavity.

[0014] The present invention also provides a lens device, including the aperture module as described above.

[0015] The present invention also provides a photographic device, including the lens assembly described above.

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

[0017] This application provides an aperture module that can be installed in a lens assembly, and the lens assembly can be used in photographic equipment. A turntable is axially rotatably mounted in the inner cavity of a fixed base. The turntable and the fixed base are coaxially arranged, and the outer diameter of the turntable is slightly smaller than the inner diameter of the fixed base, creating a gap between the turntable and the fixed base that communicates with the inner cavity. The fixed base has a receiving groove opposite to the turntable, and a sound-absorbing component is installed in the receiving groove. At least a portion of the sound-absorbing component extends into the inner cavity through the receiving groove. The thickness of the extended portion in the cavity is equal to the distance of the gap. The silencing component is in contact with the turntable so that it can provide support for the turntable and enhance its stability. When subjected to external force, the turntable can rotate relative to the fixed base in the inner cavity around the central axis. At the same time, the turntable also rotates relative to the silencing component. The turntable is indirectly connected to the fixed base through the silencing component. The vibration of the turntable is absorbed by the elastic deformation of the silencing component, thereby achieving the purpose of vibration reduction and noise reduction when the aperture module is in operation, and meeting the requirements of the photographic equipment for silent aperture operation during video recording.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a perspective view 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 hidden cover and turntable).

[0022] Figure 4 for Figure 3 Section A-A in Figure 1 (Hidden seat cover, turntable, aperture blades, and muffler);

[0023] Figure 5 for Figure 3 Section A-A in Figure 2 (Hidden seat cover, turntable, and aperture blades);

[0024] Figure 6 for Figure 3 Section A-A Figure 3 (Including the base cover, turntable, aperture blades, and noise reduction components);

[0025] Figure 7 for Figure 6 Enlarged view of part B in the image;

[0026] Figure 8 This is a top view of the mounting base for the aperture module of the present invention;

[0027] Figure 9 This is a top view of the mounting base, aperture blades, and turntable of the aperture module of the present invention;

[0028] Figure 10 for Figure 9 Enlarged 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 Implementation

[0032] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figure 1As shown in Figure 13, the present invention provides an aperture module 100, which can be installed in a lens assembly, and the lens assembly can be applied to photographic equipment. Specifically, the aperture module 100 includes a mounting base 110 and a turntable 120. The turntable 120 and the mounting base 110 are detachably connected in the front-rear direction. The mounting base 110 has an inner cavity 111, and the turntable 120 is axially rotatably disposed in the inner cavity 111. The mounting base 110 also has a... The inner cavity 111 is connected to a receiving groove 112, which is opposite to the turntable 120. A gap 101 is formed between the turntable 120 and the fixed base 110. A silencing component 130 is installed in the receiving groove 112. At least a portion of the silencing component 130 extends into the inner cavity 111 through the receiving groove 112 and passes through the gap 101 to contact the turntable 120. The silencing component 130 undergoes elastic deformation under the pressure of the turntable 120. Figure 6 and Figure 7 As shown, during assembly, the turntable 120 is axially rotatable within the inner cavity 111. The turntable 120 and the fixed base 110 are coaxially arranged, and the outer diameter of the turntable 120 is slightly smaller than the inner diameter of the fixed base 110, forming a gap 101 between the turntable 120 and the fixed base 110 that communicates with the inner cavity 111. The thickness of the insertion portion of the silencing member 130 within the inner cavity 111 is equal to the distance of the gap 101, and the silencing member 130 contacts the turntable 120, so that the silencing member 130 can provide support for the turntable 120, enhancing 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 relative to the fixed base 110 in the inner cavity 111, while the turntable 120 also rotates relative to the muffler 130, causing the turntable 120 to vibrate and exert a squeezing force on the muffler 130. The muffler 130 undergoes elastic deformation under the squeezing of the turntable 120. The turntable 120 is indirectly connected to the fixed base 110 through the muffler 130. The vibration of the turntable 120 is absorbed by the elastic deformation of the muffler 130, thereby achieving the purpose of vibration reduction and noise reduction when the aperture module 100 is in operation, and meeting the requirements of the photographic equipment for silent aperture operation during video recording.

[0034] In some embodiments, the sound-absorbing component 130 is made of sound-absorbing cotton with a porous structure, such as polyester sound-absorbing cotton, etc. Figure 5 As shown in Figure 7, during assembly, the sound-absorbing cotton is directly installed into the receiving groove 112, as follows: Figure 5 The sound-absorbing component 130 is in its uncompressed, natural state, and at least a portion of the sound-absorbing cotton extends into the inner cavity 111 through the receiving groove 112. After the turntable 120 is installed, the sound-absorbing cotton is compressed and shrinks by the turntable 120, that is, the sound-absorbing cotton is compressed by the turntable 120. Figure 7The sound-absorbing component 130 is in a compressed state. The sound-absorbing cotton is compressed by the turntable 120, causing elastic deformation and absorbing the vibration of the turntable 120. This achieves the purpose of vibration reduction and noise reduction for the aperture module 100. Moreover, after the sound-absorbing cotton contracts, the thickness of the portion extending into the inner cavity 111 is equal to the distance of the gap 101, so that the sound-absorbing cotton can provide corresponding support for the turntable 120, enhancing the stability of the turntable 120, while maintaining a slight gap between the turntable 120 and the fixed base 110. The gap 101 reduces the friction between the turntable 120 and the fixed base 110 during operation, thereby achieving vibration reduction and noise reduction when the aperture module 100 operates, meeting the requirement of quiet aperture operation during video recording. Because the sound-absorbing component 130 has elastic deformation characteristics, it can slowly rebound and return to its original shape after the turntable 120 releases its pressure, allowing it to be reused and reducing the manufacturing and operating costs of the aperture module 100. Furthermore, the sound-absorbing cotton has excellent sound absorption properties, further absorbing noise during aperture module 100 operation, effectively preventing the recording of aperture operation noise by the video recording equipment. In addition, since the sound-absorbing cotton is compressed by the turntable 120 during assembly, the structural strength of the sound-absorbing cotton is enhanced. This effectively prevents the sound-absorbing cotton from being detached from the receiving groove 112 due to the friction of the turntable 120 rotating, which would cause the aperture module 100 to get stuck and unable to operate. Based on this, the gap 101 between the turntable 120 and the fixed seat 110 should not 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.

[0035] In this embodiment, as Figure 6 As shown, the fixing base 110 includes a base plate 113 and a side wall 114 connected to the base plate 113. The side wall 114 extends from the outer edge of the base plate 113 along the axial direction of the fixing base 110 to one side, so that the fixing base 110 forms the inner cavity 111. The inner side of the side wall 114 is also provided with an extension wall 115 extending toward the inner cavity 111. The end face of the extension wall 115 away from the base plate 113 forms a support surface 1151 for supporting the turntable 120. When the turntable 120 is installed on the fixing base 110... In the inner cavity 111 of 10, the supporting surface 1151 is in contact with 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 silencing component 130 is in contact with the outer side wall 114 of the turntable 120, so that a rotating cavity 1111 for the turntable 120 to rotate is formed in the inner cavity 111. The receiving groove 112 is provided between the side wall 114 and the extension wall 115, so that the silencing component 130 can abut against the outer side surface of the turntable 120 after being inserted into the receiving groove 112.

[0036] Furthermore, the receiving groove 112 includes an upper cavity 1121 and a lower cavity 1122 that are connected. The upper cavity 1121 is recessed radially outward relative to the inner wall surface of the side wall 114 along the fixing seat 110. The lower cavity 1122 is recessed axially towards the base plate 113 relative to the supporting surface 1151 of the extension wall 115 along the fixing seat 110. A limiting wall 1152 opposite to the lower cavity 1122 is formed in the extension wall 115. The upper cavity 1121 extends towards the base 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 dashed line L2 in the figure represents the simulated boundary between the upper cavity 1121 and the lower cavity 1122. An L-shaped receiving groove 112 with a cross section is formed between the side wall 114 and the extension wall 115, which communicates with the rotating cavity 1111. 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 external structure of the silencing component 130 can be set as a cube that is adapted to the receiving groove 112, so that a part of the silencing component 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, such as Figure 5 and Figure 7 As shown, Figure 5 and Figure 7The dashed line L3 in the figure represents the simulated boundary 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 compressed by the turntable 120 to form an L-shaped groove 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 fully contact the muffler 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 cavity of the receiving groove 112 further fixes the second part 132 of the muffler 130, improving the stability of the muffler 130 and preventing the muffler 130 from easily coming out of the receiving groove 112 due to the rotational friction of the turntable 120. Furthermore, the second part 132 formed when the muffler 130 is compressed and contracted by the turntable 120 can also contact the bottom surface of the turntable 120 and provide support for the turntable 120. When the turntable 120 rotates relative to the fixed base 110, the first part 131 and the second part 132 of the muffler 130 undergo elastic deformation and absorb the vibration generated by the operation of the turntable 120, thereby achieving the purpose of vibration reduction and noise reduction when the aperture module 100 is in operation. In addition, since the muffler 130 has the characteristic of elastic deformation, when the turntable 120 releases its compression on the muffler 130, the muffler 130 can slowly spring back and return to its original shape, so that the muffler 130 can be reused, reducing the manufacturing and usage 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 housed within 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 to prevent the muffler 130 from being dislodged from 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 muffler 130, the first part 131 of the muffler 130 is also increased, that is, the part of the muffler 130 that contacts the outer wall of the turntable 120 is increased, so as to ensure that the size of the upper part of the muffler 130 can meet the contact conditions with the outer side of the turntable 120.

[0039] In other embodiments, the receiving groove 112 has a guide structure at its opening in the side wall 114. This guide structure is a guide ramp 1123 extending along the bottom of the receiving groove 112, causing the opening of the receiving groove 112 in the side wall 114 to gradually increase in size towards the top surface of the side wall 114, facilitating the disassembly and replacement of the muffler 130. It should be noted that the total height of the receiving groove 112 does not include the height of the guide ramp 1123, and the height of the upper cavity 1121 also does not include the height of the guide ramp 1123.

[0040] In other embodiments, the receiving groove 112 is configured as a continuous arc-shaped long groove, with both ends of the receiving groove 112 extending circumferentially along the side wall 114, and the perimeter of the receiving groove 112 is smaller than the perimeter of the extending wall 115. The silencing component 130 is configured as a long strip-shaped sheet structure, and the specific structure of the silencing component 130 is set according to the structure of the receiving groove 112. This is beneficial to further enhance the supporting force of the silencing component 130 on the turntable 120, thereby enhancing the stability of the turntable 120.

[0041] In other embodiments, such as Figure 8 As shown, the receiving groove 112 is configured as a plurality of short arc-shaped grooves, each receiving groove 112 being equally spaced along the extension wall 115. A plurality of silencing components 130 are correspondingly provided, and each is installed in a one-to-one correspondence with a receiving groove 112. While ensuring sufficient support for the turntable 120, the segmented arrangement of the silencing components 130 according to the receiving grooves 112 reduces the volume of each silencing component 130, facilitating its assembly and disassembly. The receiving groove 112 includes at least a first-end receiving groove 112 and a last-end receiving groove 112, and the maximum distance between the first-end receiving groove 112 and the last-end receiving groove 112 is less than the perimeter of the extension wall 115.

[0042] In this embodiment, as 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. Both ends of the extension wall 115 extend circumferentially along 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. Preferably, the circumference of the extension wall 115 is 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 and improve the supporting force of the extension wall 115 on the turntable 120.

[0043] In this embodiment, as Figure 2As shown, the aperture module 100 further includes multiple aperture blades 140 disposed between the fixed base 110 and the turntable 120, and a driving device 150 connected to the turntable 120. Each aperture blade 140 is arc-shaped, 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. The turntable 120 is provided with a first through hole 121 and multiple sliding grooves 122 adapted to the driving end 141. Each sliding groove 122 is equally spaced along the circumference of the turntable 120 and is located at... Around the first through hole 121, each of the sliding grooves 122 extends radially along the turntable 120, and the two ends of each sliding groove 122 form a first limiting end 1221 near the outer edge of the turntable 120 and a second limiting end 1222 near the first through hole 121; the base plate 113 is provided with 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 equally spaced along the circumference of the base plate 113 and located around the second through hole 1131; during assembly, the turntable 120 and the fixed seat 110 are coaxially assembled by aligning the first through hole 121 and the second through hole 1131, such as... Figure 6 and Figure 7 As shown, a blade receiving cavity 1112 is formed in the inner cavity 111 between the support surface 1151 of the extension wall 115 and the base plate 113. Each aperture blade 140 is disposed in the blade receiving cavity 1112. One end of each aperture blade 140 is slidably connected to the slide groove 122 in the turntable 120 through the driving end 141, and the other end of each aperture blade 140 is rotatably connected to the mounting hole 1132 in the base 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 together form a light-transmitting hole 102. The drive device 150 drives the aperture blades 102 to pass through the light-transmitting hole 102. The turntable 120 rotates, causing the driving ends 141 of each aperture blade 140 to slide within the corresponding grooves 122. That is, the driving ends 141 of each aperture blade 140 slide within the corresponding grooves 122 relative to the first limiting end 1221 and the second limiting end 1222 of the grooves 122. Simultaneously, the driven ends 142 of each aperture blade 140 rotate within the corresponding mounting holes 1132, causing each aperture blade 140 to switch between an open state (enlarging) and a closed state (shrinking) corresponding to the enlargement or reduction of the light-transmitting aperture 102, respectively. The first limiting end 1221 and the second limiting end 1222 in each groove 122 are used to limit the sliding distance of the driving ends 141 of each aperture blade 140. Figure 9 and Figure 10As shown, when each of the aperture blades 140 is in the 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-transmitting hole 102 is at its minimum diameter. When the turntable 120 rotates counterclockwise relative to the fixed base 110 via 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 within the slide groove 122. The driven end 142 of the aperture blade 140 rotates within the mounting hole 1132, causing each aperture blade 140 to rotate outwards from the first through hole 121 and the second through hole 1131, thereby gradually increasing the size of the light-transmitting hole 102. When the driven end 142 of each aperture blade 140 is at the second limiting end 1222 within the slide groove 122, the area covered by each aperture blade 140 in the first through hole 121 and the second through hole 1131 is at its minimum, that is, the diameter of the light-transmitting hole 102 reaches its maximum, and each aperture blade 140 switches to the open state. When the turntable 120 rotates clockwise relative to the fixed base 110 via the drive device 150, the drive 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, causing the coverage area of ​​each aperture blade 140 over the first through hole 121 and the second through hole 1131 to gradually increase, i.e., the light-transmitting hole 102 to gradually shrink, thereby causing each aperture blade 140 to switch to a closed state. The sliding distance of the drive end 141 of each aperture blade 140 is limited by the first limiting end 1221 and the second limiting end 1222 in each slide groove 122, thereby limiting the rotation range of each aperture blade 140 to ensure the normal use of the aperture module 100.

[0044] Furthermore, to ensure smooth rotation of each aperture blade 140, the base plate 113 of the fixing seat 110 is provided with washers 1133 corresponding to each mounting hole 1132. Each washer 1133 extends from the base 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 washer 1133. The washer 1133 reduces the contact area between each aperture blade 140 and the base plate 113, thereby reducing the rotational friction force on each aperture blade 140 and making the opening and closing of each aperture blade 140 smoother.

[0045] Furthermore, such as Figure 1 and Figure 4As shown in Figure 7, the driving device 150 includes a motor 151 and a transmission component 152 that is pulsatorically connected to the motor 151. The outer edge of the turntable 120 is provided with a mating part 124 that is rotatably connected to the transmission component 152. The motor 151 drives the transmission component 152 to rotate, and the transmission component 152 and the mating part 124 generate transmission, thereby driving the turntable 120 to rotate in the inner cavity 111. In this embodiment, the fixed base 110 has a mounting portion 117 for mounting the drive device 150 on one side. The mounting portion 117 has a mounting cavity communicating with the inner cavity 111 and an opening 1171 communicating with the mounting cavity. The motor 151 is disposed outside the fixed base 110. The motor 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 shaft. The transmission member 152 is opposite to the mating portion 124 of the turntable 120. The turntable 120 abuts against the supporting surface 1151 of the extension wall 115, and the mating portion 124 of the turntable 120 is engaged with the transmission member 152. The motor 151 drives the transmission member 152 to rotate, and a transmission is generated between the transmission member 152 and the mating portion 124, thereby driving the turntable 120 to rotate axially relative to the fixed base 110. The turntable 120 is driven by a motor 151, which, through meshing transmission, provides high transmission efficiency and allows for rapid opening and closing of the aperture. Furthermore, the motor 151 is connected to a lever 153, allowing the user to start the motor 151 by operating the lever 153.

[0046] In other embodiments, such as Figure 1 , Figure 12 and Figure 13 As shown, a positioning block 123 is also provided on one side of the turntable 120. The positioning block 123 extends along the outer edge of the turntable 120 toward the base plate 113. A limiting groove 116 is also provided in the fixed seat 110 located on one side of the extension wall 115. The limiting groove 116 communicates with the inner cavity 111 and extends circumferentially along the side wall 114 at both ends. The positioning block 123 of the turntable 120 can extend into the limiting groove 116. The rotation of the turntable 120 drives the extension block to rotate synchronously in the limiting groove 116, and the limiting groove 116 restricts the rotation range of the turntable 120. In this embodiment, the positioning block 123 in the turntable 120 is disposed near the mating part 124, one end of the limiting groove 116 is close to the mounting part 117 and the other end is away from the mounting part 117, and the two ends of the limiting groove 116 respectively form the limiting surface of the positioning block 123 through the left and right end faces 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 part 117. When the turntable 120 rotates counterclockwise relative to the fixed base 110 via the driving device 150, it drives the positioning block 123 to rotate counterclockwise within the limiting groove 116, causing the positioning block 123 to rotate along the limiting groove 116 towards the mounting base, thereby changing each of the aperture blades 140 from the closed state to the open state; Figure 13 As shown, when the turntable 120 rotates clockwise relative to the fixed base 110 via the driving device 150, it drives the positioning block 123 to rotate clockwise within the limiting groove 116, causing the positioning block 123 to rotate along the limiting groove 116 in a direction away from the mounting base, thereby changing each of the aperture blades 140 from the open state to the closed state. The limiting groove 116 restricts the rotation range of the positioning block 123, further limiting the rotation range of the turntable 120 to ensure the normal operation of the aperture module 100. Furthermore, the rotation of the turntable 120 within the limiting groove 116 via the positioning block 123 enhances the rotational 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 on the same circumference of the fixing base 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 about 1 / 3 of the circumference of the side wall 114. Correspondingly, the circumference of the extension wall 115 is preferably about 2 / 3 of the circumference of the side wall 114. Integrating the extension wall 115 and the limiting groove 116 into the fixing base 110 helps to simplify the assembly of the components in the aperture module 100, thereby improving the production efficiency of the aperture module 100.

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

[0048] In this embodiment, the aperture module 100 further includes a cover 160, which is disposed in the front side of the fixed base 110 along the front-rear direction. The cover 160 closes the inner cavity 111 of the fixed base 110. A third through hole 161 is also provided in the cover 160. During installation, the cover 160, the turntable 120 and the fixed base 110 are aligned and installed through the third through hole 161, the first through hole 121 and the second through hole 1131, respectively.

[0049] In some embodiments, the cover 160 and the fixed base 110 are detachably connected, such as by a snap-fit ​​connection, a shaft hole insertion connection, or a threaded connection. Figure 1 As shown, in this embodiment, the outer wall of the fixed base 110 is provided with a plurality of slots 118, and each slot 118 is provided with a fastener 119. The cover 160 is provided with a connector 162 corresponding to each of the fasteners 119. Each connector 162 is provided with a connection port 163 that cooperates with the fastener 119. The connection port 163 extends along the height direction of the connector 162 toward the top surface of the cover 160. Each of the fasteners 119 is fastened to the connection port 163 so that the cover 160 is installed on the fixed base 110.

[0050] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. An aperture module, characterized in that, The device includes a fixed base (110), a turntable (120), and a cover (160) disposed on one side of the fixed base (110). The fixed base (110) has an inner cavity (111), which is closed by the cover (160). The turntable (120) is axially rotatably disposed in the inner cavity (111). The fixed base (110) also has a receiving groove (112) communicating with the inner cavity (111). The receiving groove (112) is connected to the inner cavity (111). The turntables (120) are opposite each other, and a gap (101) is formed between the turntables (120) and the fixed base (110). A silencing component (130) is installed in the receiving groove (112). At least part of the silencing component (130) extends into the inner cavity (111) through the receiving groove (112) and passes through the gap (101) to contact the turntables (120). The silencing component (130) is elastically deformed by the pressure of the turntables (120).

2. An aperture module as described in claim 1, characterized in that, The fixed base (110) includes a base plate (113) and a side wall (114) connected to the base plate (113). The side wall (114) extends from the outer edge of the base plate (113) along the axial direction of the fixed base (110) to one side. The inner side of the side wall (114) is also provided with an extension wall (115) extending toward the inner cavity (111). The end face of the extension wall (115) away from the base plate (113) forms a support surface (1151) for supporting the turntable (120). The receiving groove (112) is provided between the side wall (114) and the extension wall (115).

3. An aperture module as described in claim 2, characterized in that, The receiving groove (112) includes an upper cavity (1121) and a lower cavity (1122) that are connected. The upper cavity (1121) is recessed outward 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 towards 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 towards 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 muffler (130) includes a first part (131) corresponding to the upper cavity (1121) and a second part (132) corresponding to the lower cavity (1122). The first part (131) extends into the inner cavity (111) through the upper cavity (1121). The height of the first part (131) is slightly greater than or equal to the height of the turntable (120). The second part (132) is located in the lower cavity (1122) and is opposite to the limiting wall (1152).

4. An aperture module as described in claim 2, characterized in that, The two ends of the extension wall (115) extend circumferentially along 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. An aperture module as described in claim 2, characterized in that, The aperture module (100) further includes multiple aperture blades (140) disposed between the fixed base (110) and the turntable (120), and a driving device (150) connected to the turntable (120). Each aperture blade (140) is arc-shaped, and each aperture blade (140) has a driving end (141) and a driven end (142) at both ends. The turntable (120) has a first through hole (121) and multiple grooves (122) adapted to the driving end (141). Each of the slide grooves (122) is equally spaced along the circumference of the turntable (120) and located on the periphery of the first through hole (121). Each of the slide grooves (122) extends radially along 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 base plate (113). Each of the mounting holes (1132) is equally spaced along the circumference of the base plate (113) and located on the periphery of the second through hole (1131). The turntable (120) and the fixed base (110) are aligned by 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 of the slide grooves (122). The driven end (142) of each aperture blade (140) is rotatably connected to each of the mounting holes (1132). The aperture blades (140) are staggered around the axis of the turntable (120) so that the aperture blades (140) form a light-transmitting hole (102). The light-transmitting hole (102) can communicate with the first through hole (121) and the second through hole (1131). The drive device (150) drives the turntable (120) to rotate, and drives the drive end (141) of each aperture blade (140) to slide in the slide groove (122). 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 the enlargement and shrinkage of the light-transmitting hole (102), respectively.

6. An aperture module as described in claim 5, characterized in that, Each of the slide grooves (122) has a first limiting end (1221) and a second limiting end (1222) at both ends, and the first limiting end (1221) and the second limiting end (1222) limit the sliding distance of the drive end (141) of the aperture blade (140) in the slide groove (122).

7. An aperture module as described in claim 5, characterized in that, A positioning block (123) is also provided on one side of the turntable (120). The positioning block (123) extends along the outer edge of the turntable (120) toward the base plate (113). A limiting groove (116) located on one side of the extension wall (115) is also provided in the fixed seat (110). The limiting groove (116) is connected to the inner cavity (111) and its two 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). The rotation of the turntable (120) drives the positioning block (123) to rotate synchronously in the limiting groove (116), and the limiting groove (116) limits the rotation range of the turntable (120). The base plate (113) is provided with a plurality of washers (1133) corresponding to each of the mounting holes (1132), and each of the washers (1133) extends from the base plate (113) toward the inner cavity (111).

8. An aperture module as described in claim 5, characterized in that, The driving device (150) includes a motor (151) and a transmission component (152) that is connected to the motor (151). The outer edge of the turntable (120) is provided with a mating part (124) that is rotatably connected to the transmission component (152). The motor (151) drives the transmission component (152) to rotate, and the transmission component (152) and the mating part (124) generate transmission, thereby driving the turntable (120) to rotate in the inner cavity (111).

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

10. A photographic device, characterized in that, Includes the lens device as described in claim 9.

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