Shutter shading blade bearing structure and shutter device

Abstract

The invention relates to the technical field of camera equipment, and discloses a shutter shading blade bearing structure and a shutter device.The bearing structure comprises a bearing seat, a bearing cover plate, a pendulum shaft and a shading blade; the bearing seat is provided with a C-shaped seat which forms a sleeving groove with the central block; the central block is rotationally connected with one end of the pendulum shaft through a C-shaped cavity; and the cover body is rotationally connected with the other end of the pendulum shaft, and the cover body and the other end of the pendulum shaft are limited by a square sleeve after being spliced. Optimized structures such as shaft hole matching, upper and lower floating fulcrums, a fixed vertical plate and a floating limiting cavity can be additionally arranged. Through the splicing type rigid bearing and multi-dimensional limiting buffering design, the structural rigidity and the assembly precision are improved, it is guaranteed that the pendulum shaft is coaxial for a long time, blade jamming and light leakage are avoided, and the service life is prolonged. The shutter device is high in adaptability, and can meet the requirements of high image quality and high reliability of precise optical equipment.

Description

Technical Field

[0001] This invention relates to the field of camera equipment technology, and in particular to a shutter shutter blade receiving structure and shutter device. Background Technology

[0002] The shutter mechanism is a core functional component in optical imaging equipment (such as cameras, webcams, and precision optical instruments). It primarily achieves precise control of the amount of light transmitted through the periodic rotation of light-blocking blades, directly affecting image quality, exposure accuracy, and the operational stability of the equipment. The smooth rotation and precise positioning of the light-blocking blades depend on the reliability of the shutter shaft and its supporting structure. The rigidity and coaxiality accuracy of the shaft support structure are key factors determining the shutter mechanism's performance and lifespan.

[0003] In existing shutter mechanism designs, to facilitate the assembly and layout of the light-shielding blades, the shutter shaft support structure typically adopts an extended mounting plate design. Specifically, this design generally uses the shutter base as the basic carrier, with an independent extended mounting plate extending from the side of the base. The upper and lower support points of the shutter shaft are respectively set on this extended mounting plate, which supports the shaft, thereby enabling the rotatable assembly of the light-shielding blades.

[0004] However, the existing design has insurmountable technical defects: on the one hand, due to its own structural characteristics, the rigidity of the cantilevered pivot mounting plate is relatively insufficient, and it is prone to initial deformation under the action of assembly external force and installation stress during the processing and assembly of the shutter device; on the other hand, during the long-term use of the shutter device, the alternating load generated by the rotation of the light-shielding blades, the thermal stress caused by changes in ambient temperature, and equipment vibration will continue to act on the cantilever mounting plate, causing the mounting plate to undergo continuous bending or warping deformation.

[0005] Deformation of the mounting plate directly leads to a decrease in the coaxiality of the shutter hinge. Since the upper and lower support points of the hinge are both located on the deformed cantilever mounting plate, the misalignment of the mounting plate causes these support points to lose their straight line, resulting in a loss of coaxiality accuracy. This decrease in hinge coaxiality directly causes the light-shielding blades to become stuck and operate unevenly, producing abnormal noises and severely affecting the accuracy of light transmission control, leading to exposure deviations and light leakage. In more severe cases, it can cause interference and friction between the light-shielding blades and other internal shutter components, accelerating wear and significantly shortening the shutter's lifespan, or even causing the shutter to fail completely, thus failing to meet the high reliability and precision requirements of precision optical equipment.

[0006] It is evident that the extended cantilevered rotating shaft mounting plate support structure used in existing shutter devices suffers from defects such as easy deformation and difficulty in maintaining coaxiality over a long period, which severely restricts the working accuracy, operational stability, and service life of the shutter device and cannot meet the current demand for high image quality and high reliability in precision optical equipment. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of this invention is to provide a shutter shutter blade receiving structure and a shutter device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions. In particular, this invention can solve the technical problems of easy deformation and coaxiality inaccuracy of existing cantilever mounting plates, and ensure stable rotation of the swing shaft.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A shutter shutter blade receiving structure includes an upright receiving seat, a receiving cover plate that mates with the back of the receiving seat, a swing shaft whose two ends are rotatably connected to the receiving seat and the receiving cover plate respectively, and a shutter blade disposed on the swing shaft. The receiving seat includes an inverted bracket and a central block disposed in the middle of the inverted bracket, thereby forming a first upper fitting groove and a first lower fitting groove. The central block has a C-shaped cavity for accommodating the swing shaft and is rotatably connected to one end of the swing shaft. The receiving cover plate includes an inverted frame and a cover body disposed on the inverted frame. The cover body is rotatably connected to the other end of the swing shaft, thereby forming a second upper fitting groove corresponding to the first upper fitting groove and a second lower fitting groove corresponding to the first lower fitting groove. The cover body of the receiving cover plate and the central block of the receiving seat are spliced ​​together and then fitted with a square sleeve.

[0009] In some extended embodiments, the center block of the receiving seat is provided with at least two positioning blind holes, and the cover of the receiving cover is provided with positioning through holes corresponding to the positioning blind holes, with positioning pins inserted into the positioning through holes and positioning blind holes.

[0010] In some extended embodiments, the swing shaft includes a shaft head and end shafts disposed on both ends of the shaft head. The central block has a first shaft hole that is rotatably connected to the corresponding end shaft, and the cover has a second shaft hole that is rotatably connected to the corresponding end shaft.

[0011] In some extended embodiments, the receiving seat is provided with an upper limit block and a lower limit block for limiting the swing shaft.

[0012] In some extended embodiments, the receiving seat is provided with a mating hole at its corner, and the receiving cover is provided with a mating protrusion corresponding to the mating hole.

[0013] In some extended versions, the top and bottom of the receiving seat are provided with floating fulcrum structures.

[0014] In some extended embodiments, the receiving seat is provided with an L-shaped groove, and the floating fulcrum structure includes an L-shaped rod inserted into the L-shaped groove and a spring sleeved on the vertical body of the L-shaped rod. The L-shaped rod is fixed to the receiving seat with glue.

[0015] In some extended designs, the insertion end of the L-shaped groove has an outwardly flared structure, and the cross-section of the L-shaped rod is square.

[0016] The present invention also includes a fixed upright plate, wherein the C-shaped frame receiving the cover plate is provided with a floating limiting cavity for the fixed upright plate to be embedded.

[0017] The present invention also provides a shutter device, including the shutter light-shielding blade receiving structure described above.

[0018] The beneficial effects of this invention are as follows: The shutter shading blade receiving structure provided by this invention abandons the existing cantilever mounting plate design and adopts an integral structure in which a vertically set receiving seat and receiving cover plate are spliced ​​together. The splicing part is reinforced and constrained by a square sleeve, so that the entire support structure forms a more rigid integral load-bearing system. This structure does not require a cantilever extension design, and can effectively resist the assembly external force and installation stress during processing and assembly, avoiding initial deformation; at the same time, it can resist the long-term effects of alternating loads generated by the rotation of the shading blade, thermal stress caused by changes in ambient temperature, and equipment vibration, thus eliminating the problem of continuous bending or warping deformation of the support structure from the root.

[0019] In this design, the two ends of the balance shaft are rotatably connected to the center block of the support seat and the cover of the support plate, respectively. The support seat and the support plate are strictly restricted from separation and vertical misalignment via a square sleeve, ensuring that the two support points of the balance shaft remain on the same straight line, guaranteeing stable coaxiality accuracy. Compared to existing technologies where the coaxiality of the balance shaft is lost due to deformation of the mounting plate, this design ensures long-term stability of coaxiality, preventing it from decreasing due to extended use or external environmental influences. The stable coaxiality of the balance shaft ensures smooth rotation of the light-shielding blades, effectively avoiding problems such as rotational jamming and abnormal noise. Simultaneously, the light-shielding blades can precisely swing along a preset trajectory, preventing light transmission control deviations due to jamming or offset. This completely solves the defects of exposure deviation and light leakage in existing technologies, significantly improving the light transmission control accuracy of the shutter device and meeting the high-quality imaging requirements of precision optical equipment.

[0020] The shutter device provided by this invention has all the advantages of a shutter shutter blade receiving structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the shutter light-shielding blade receiving structure provided by the present invention, with the light-shielding blade in a covered state. Figure 2 A schematic diagram of the shutter light-blocking blade receiving structure provided by the present invention, showing the light-blocking blade in a light-blocking state; Figure 3 A schematic diagram of the structure provided by the present invention, showing the square sleeve covering the central block and the cover; Figure 4 An exploded view of the shutter shutter blade support structure; Figure 5 A cross-sectional view of the shutter light-shielding blade receiving structure provided by the present invention.

[0022] Explanation of main component symbols: 1. Receiver, 11. C-shaped seat, 12. Center block, 121. C-shaped cavity, 13. First upper sleeve groove, 14. First lower sleeve groove, 15. Positioning blind hole, 16. First shaft hole, 17. Butt hole, 18. L-shaped groove, 2. Receiver cover plate, 21. C-shaped frame, 22. Cover body, 23. Second upper sleeve groove, 24. Second lower sleeve groove, 25. Positioning through hole, 26. Positioning pin, 27. Second shaft hole, 29. Floating limiting cavity, 3. Swing shaft, 31. Shaft head, 32. End shaft, 4. Light-shielding blade, 51. Upper limit block, 52. Lower limit block, 6. Floating fulcrum structure, 61. L-shaped rod, 62. Spring, 7. Fixed upright plate, 8. Square sleeve, 9. Glue. Detailed Implementation

[0023] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] In the description of this invention, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0026] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0027] Please see Figures 1 to 5 As shown, the present invention provides a shutter light-shielding blade receiving structure, including a vertically arranged receiving seat 1, a receiving cover plate 2 that is connected to the back of the receiving seat 1, a swing shaft 3 whose two ends are respectively rotatably connected to the receiving seat 1 and the receiving cover plate 2, and a light-shielding blade 4 disposed on the swing shaft 3. The receiving seat 1 includes an inverted U-shaped seat 11 and a central block 12 disposed in the middle of the inverted U-shaped seat 11, thereby forming a first upper fitting groove 13 and a first lower fitting groove 14 in the receiving seat 1. The central block 12 has an opening for receiving... The C-shaped cavity 121 of the swing shaft 3 is rotatably connected to one end of the swing shaft 3. The receiving cover plate 2 includes an inverted frame 21 and a cover body 22 disposed on the inverted frame 21. The cover body 22 is rotatably connected to the other end of the swing shaft 3, thereby forming a second upper fitting groove 23 corresponding to the first upper fitting groove 13 and a second lower fitting groove 24 corresponding to the first lower fitting groove 14. The cover body 22 of the receiving cover plate 2 and the center block 12 of the receiving seat 1 are spliced ​​together and then covered by the square sleeve 8.

[0028] During assembly, firstly, the swing shaft 3 is pre-installed into the C-shaped cavity 121 of the receiving seat 1, so that one end of the swing shaft 3 forms a rotational engagement with the center block 12; then, the light-shielding blade 4 is fixedly assembled on the swing shaft 3, ensuring that the light-shielding blade 4 rotates synchronously with the swing shaft 3; next, the receiving cover plate 2 is precisely fitted to the back of the receiving seat 1, so that the cover body 22 of the receiving cover plate 2 forms a rotational engagement with the other end of the swing shaft 3. At this time, the first upper fitting groove 13 of the receiving seat 1 is aligned with the second upper fitting groove 23 of the receiving cover plate 2, and the first lower fitting groove 14 is aligned with the second lower fitting groove 24. At the same time, the center block 12 of the receiving seat 1 and the cover body 22 of the receiving cover plate 2 form a spliced ​​whole; finally, the square sleeve 8 is fitted onto the outside of the spliced ​​whole. Through the constraint of the square sleeve 8, the relative misalignment movement of the receiving seat 1 and the receiving cover plate 2 along the separation direction and the up and down direction is restricted, thus completing the assembly and fixing of the entire receiving structure.

[0029] When the shutter mechanism needs to adjust the amount of light transmission, the external drive mechanism drives the swing shaft 3 to rotate around its axis. The two ends of the swing shaft 3 are stably supported by the C-shaped cavity 121 of the center block 12 of the support seat 1 and the cover 22 of the support cover plate 2. During the rotation of the swing shaft 3, the light-blocking blades 4 on it swing synchronously. The opening, closing or adjustment of the light transmission channel is achieved by changing the swing angle of the light-blocking blades 4. During this process, the square sleeve 8 always constrains the splicing part of the support seat 1 and the support cover plate 2 to ensure that the two will not separate or misalign, thereby ensuring that the support points at both ends of the swing shaft 3 always remain coaxial, providing a stable guarantee for the smooth rotation of the swing shaft 3.

[0030] The shutter shading blade receiving structure provided by this invention abandons the existing cantilever mounting plate design and adopts an integral structure in which the vertically set receiving seat 1 and receiving cover plate 2 are spliced ​​together. The splicing part is reinforced and constrained by the square sleeve 8, so that the entire support structure forms a more rigid integral load-bearing system. This structure does not require a cantilever extension design, and can effectively resist the assembly external force and installation stress during processing and assembly, avoiding initial deformation. At the same time, it can resist the alternating load generated by the rotation of the shading blade 4, the thermal stress caused by the change of ambient temperature, and the long-term effects of equipment vibration, thus eliminating the problem of continuous bending or warping deformation of the support structure at its root.

[0031] In this design, the two ends of the swing shaft 3 are rotatably connected to the center block 12 of the support seat 1 and the cover body 22 of the support cover plate 2, respectively. The support seat 1 and the support cover plate 2 are strictly restricted from separation and vertical misalignment by the square sleeve 8, ensuring that the two support points of the swing shaft 3 always remain on the same straight line, guaranteeing stable coaxiality accuracy. Compared to the problem of loss of coaxiality due to deformation of the mounting plate in existing technologies, this design ensures long-term stability of coaxiality, which will not decrease due to prolonged use or external environmental influences. The stable coaxiality of the swing shaft 3 ensures the smooth rotation of the light-shielding blade 4, effectively avoiding problems such as rotational jamming and abnormal noise. Simultaneously, the light-shielding blade 4 can swing precisely along a preset trajectory, without causing deviation in light transmission control due to jamming or offset. This completely solves the defects of exposure deviation and light leakage in existing technologies, significantly improving the light transmission control accuracy of the shutter device and meeting the high-quality imaging requirements of precision optical equipment.

[0032] Specifically, the swing shaft 3 includes a shaft head 31 and end shafts 32 disposed on both ends of the shaft head 31. The center block 12 is provided with a first shaft hole 16 that is rotatably connected to the corresponding end shaft 32, and the cover 22 is provided with a second shaft hole 27 that is rotatably connected to the corresponding end shaft 32.

[0033] During assembly, the light-shielding blade 4 is first precisely fixed onto the shaft head 31 of the swing shaft 3. The bearing capacity of the shaft head 31 ensures a stable connection between the light-shielding blade 4 and the swing shaft 3, guaranteeing their synchronized movement. Then, the end shaft 32 of one end of the swing shaft 3 is aligned with the first shaft hole 16 on the center block 12 of the receiving seat 1, so that the end shaft 32 is precisely inserted into the first shaft hole 16 to form a rotational fit. Next, the receiving cover plate 2 is precisely fitted against the back of the receiving seat 1, so that the end shaft 32 of the other end of the swing shaft 3 is correspondingly inserted into the second shaft hole 27 on the cover 22, completing the fitting assembly of both ends of the swing shaft 3 with the corresponding shaft holes. Finally, the relative positions of the receiving seat 1 and the receiving cover plate 2 are constrained by the square sleeve 8 to ensure the coaxial alignment of the first shaft hole 16 and the second shaft hole 27, thus achieving the assembly and fixation of the entire improved structure.

[0034] When the shutter device adjusts the light transmission, the external drive mechanism drives the swing shaft 3 to move. The end shafts 32 at both ends of the swing shaft 3 rotate precisely and stably in the first shaft hole 16 of the center block 12 and the second shaft hole 27 of the cover 22, respectively. Since the light-blocking blades 4 are fixed on the shaft head 31 of the swing shaft 3, the rotation of the swing shaft 3 is directly transmitted to the light-blocking blades 4 through the shaft head 31, causing the light-blocking blades 4 to swing synchronously according to the preset trajectory, thereby realizing the opening and closing of the light transmission channel and the precise adjustment of the light transmission. During this process, the fit between the end shafts 32 at both ends and the corresponding shaft holes remains stable, and under the constraint of the square sleeve 8, the coaxiality of the first shaft hole 16 and the second shaft hole 27 does not shift, ensuring the smoothness and stability of the swing shaft 3 rotation process.

[0035] Furthermore, the receiving seat 1 is provided with an upper limit block 51 and a lower limit block 52 for limiting the swing shaft 3. When the receiving seat 1 is processed and formed, the upper limit block 51 and the lower limit block 52 are integrally formed or fixedly assembled in the preset position of the receiving seat 1 (corresponding to the extreme position of the swing shaft 3 rotation); after the swing shaft 3 is assembled with the shaft hole of the receiving seat 1 and the receiving cover plate 2, it is ensured by debugging that the outer periphery or the corresponding part of the shaft head 31 of the swing shaft 3 can be in close contact with the upper limit block 51 and the lower limit block 52 respectively when the swing shaft 3 is in a free rotation state, and at this time the light-shielding blade 4 is exactly at the extreme position of maximum opening and maximum closing, thus completing the assembly calibration of the limiting structure.

[0036] When the shutter mechanism adjusts the light transmission, the external drive mechanism drives the swing shaft 3 to rotate the light-blocking blades 4. When the swing shaft 3 rotates to its limit position in the direction of opening the light transmission channel, the corresponding part of the swing shaft 3 makes rigid contact with the upper limit block 51 of the support seat 1. The upper limit block 51 restricts the swing shaft 3 from continuing to rotate in this direction through mechanical blocking, thus preventing the light-blocking blades 4 from swinging excessively. When the swing shaft 3 rotates to its limit position in the direction of closing the light transmission channel, the corresponding part of the swing shaft 3 makes rigid contact with the lower limit block 52 of the support seat 1. Similarly, the lower limit block 52 restricts the swing shaft 3 from continuing to rotate in this direction, thereby strictly constraining the rotation angle of the swing shaft 3 within a preset range. During this process, the limit block only plays a role when the swing shaft 3 reaches its limit position and does not affect the smooth movement of the swing shaft 3 within the effective rotation range.

[0037] To ensure a tight connection between the receiving seat 1 and the receiving cover plate 2, the receiving seat 1 is provided with a mating hole 17 at its corner, and the receiving cover plate 2 is provided with a mating protrusion corresponding to the mating hole 17.

[0038] After the shaft shaft 3 is assembled with the bearing seat 1 and the bearing cover plate 2, ensure that the two end shafts 32 of the shaft shaft 3 are accurately embedded in the first shaft hole 16 of the center block 12 and the second shaft hole 27 of the cover plate 22 respectively; then proceed with the docking assembly of the bearing seat 1 and the bearing cover plate 2, aligning the docking protrusion on the bearing cover plate 2 with the docking hole 17 at the corner of the bearing seat 1. Through the guiding cooperation of the protrusion and the hole, the bearing cover plate 2 is quickly and accurately attached to the back of the bearing seat 1, while ensuring that the first upper fitting groove 13 and the first lower fitting groove 14 of the bearing seat 1 are accurately aligned with the second upper fitting groove 23 and the second lower fitting groove 24 of the bearing cover plate 2, and the center block 12 and the cover plate 22 are accurately spliced; finally, the square sleeve 8 is fitted onto the splicing part of the center block 12 and the cover plate 22 to further lock the relative position of the bearing seat 1 and the bearing cover plate 2. Combined with the interlocking effect of the docking hole 17 and the docking protrusion, the two are tightly fixed.

[0039] When the shutter is working, the alternating load generated by the rotation of the swing shaft 3, equipment vibration, and environmental thermal stress will act on the connection between the receiving seat 1 and the receiving cover plate 2. At this time, the fitting structure of the docking hole 17 of the receiving seat 1 and the docking protrusion of the receiving cover plate 2 will form circumferential and radial constraints, preventing relative displacement or misalignment between the two. At the same time, the docking structure and the square sleeve 8 form a double constraint, ensuring that the receiving seat 1 and the receiving cover plate 2 always maintain a tight fit, thereby ensuring the coaxiality stability of the support points at both ends of the swing shaft 3, providing a structural basis for the smooth rotation of the swing shaft 3 and the precise movement of the light-shielding blades 4.

[0040] Preferably, the top and bottom of the receiving seat 1 are provided with floating fulcrum structures 6, forming two supporting points that work together to ensure that the floating fulcrum can make small elastic displacements in a preset direction; then the swing shaft 3 is assembled with the shaft holes of the receiving seat 1 and the receiving cover plate 2, and the corresponding part of the swing shaft 3 forms a flexible support fit with the upper and lower floating fulcrum structures 6; next, the electromagnetic drive components (such as electromagnets, armatures, etc.) are installed, so that the armature is connected to the swing shaft 3 or the light-shielding blade 4 at a preset part, so that when the electromagnet is energized, it can drive the armature to rotate the swing shaft 3 through electromagnetic attraction, and when the power is off, the swing shaft 3 can be returned to the initial position by the reset component (such as spring 62); finally, the overall assembly and calibration are completed to ensure the stability of the floating fulcrum support for the swing shaft 3 and the accuracy of the electromagnetic drive stroke.

[0041] When the light transmission needs to be adjusted, the control system outputs a precise electrical signal to the electromagnetic drive component. The electromagnet is energized to generate electromagnetic attraction, which attracts the armature and drives the pendulum shaft 3 to rotate around the holes 32 at both ends, thereby causing the light-shielding blades 4 to swing synchronously. During this process, the upper and lower floating support structure 6 of the support seat 1 always maintains flexible support contact with the pendulum shaft 3. When the rotation of the pendulum shaft 3 generates alternating loads, equipment vibration, or thermal stress caused by changes in ambient temperature, the floating support can absorb these loads and stresses through its own small elastic displacement, avoiding the transmission of rigid impacts to the main body of the support seat 1. When the light-shielding blades 4 reach the preset position, the control system cuts off the electromagnetic signal, the electromagnet demagnetizes, and the reset component drives the pendulum shaft 3 and the light-shielding blades 4 back to the initial position. The floating support is reset synchronously, continuing to maintain stable support for the pendulum shaft 3. Throughout the entire operation, the floating support structure 6 always provides two stable support points for the pendulum shaft 3, and with the precise control of the electromagnetic drive, the controllable movement of the light-shielding blades 4 is achieved.

[0042] In this embodiment, the receiving seat 1 is provided with an L-shaped groove 18, and the floating fulcrum structure 6 includes an L-shaped rod 61 inserted into the L-shaped groove 18 and a spring 62 sleeved on the vertical body of the L-shaped rod 61. The L-shaped rod 61 is fixed to the receiving seat 1 by glue 9.

[0043] First, an L-shaped groove 18 is machined at a preset position on the receiving seat 1 to ensure that the groove size matches the L-shaped rod 61. Then, the horizontal section of the L-shaped rod 61 is inserted into the L-shaped groove 18, and the vertical rod of the L-shaped rod 61 is adjusted to face the support direction of the swing shaft 3. Glue 9 is used to fix the mating surfaces of the L-shaped rod 61 and the L-shaped groove 18 to ensure the structural stability of the L-shaped rod 61 after assembly and to avoid relative displacement. Next, the spring 62 is sleeved on the vertical rod of the L-shaped rod 61, so that the spring 62 is in a pre-compressed state, and the top of the spring 62 forms a flexible contact with the preset support part of the swing shaft 3, completing the assembly of a single floating fulcrum. The above steps are repeated to complete the assembly of the two floating fulcrums at the top and bottom of the receiving seat 1, ensuring that the two fulcrums are symmetrically distributed and together provide upper and lower support for the swing shaft 3.

[0044] When the electromagnetic drive rotates the pendulum shaft 3, the pendulum shaft 3 exerts periodic pressure on the spring 62. The spring 62 buffers this pressure through its elastic expansion and contraction, preventing rigid impact between the pendulum shaft 3 and the L-shaped rod 61. When the rotation of the pendulum shaft 3 generates alternating loads, equipment vibrations, or thermal stress caused by changes in ambient temperature, the spring 62 further absorbs these loads and stresses through elastic deformation. At the same time, the L-shaped rod 61 maintains overall stability under the fixation of the glue 9, achieving minor displacement compensation only through the expansion and contraction of the spring 62. This leads to adaptive adjustment of the support points of the pendulum shaft 3, ensuring the stability of the rotation trajectory of the pendulum shaft 3. When the pendulum shaft 3 returns to its original position, the elastic restoring force of the spring 62 pushes the pendulum shaft 3 back to its initial support position, and it also returns to its pre-compressed state simultaneously, continuously providing stable flexible support for the pendulum shaft 3 and ensuring the effectiveness of the support of the upper and lower floating support points throughout the entire operation.

[0045] Furthermore, the insertion end of the L-shaped groove 18 has an outward flared structure, and the cross-section of the L-shaped rod 61 is square. First, the outward flared structure of the insertion end of the L-shaped groove 18 forms a guide channel, and the horizontal section of the L-shaped rod 61 with a square cross-section is quickly inserted into the L-shaped groove 18 along the outward flared guide direction. The square cross-section and the rectangular cavity of the L-shaped groove 18 form a surface contact fit, which can directly restrict the circumferential rotation of the L-shaped rod 61 in the groove, realizing the rapid positioning of the L-shaped rod 61 without additional posture calibration. Then, glue 9 is filled into the reserved space formed by the outward flared opening of the L-shaped groove 18. The outward flared structure provides sufficient space for the glue 9, ensuring that the glue 9 can be evenly filled on the mating surface of the L-shaped rod 61 and the L-shaped groove 18 and the gap of the outward flared opening. After the glue 9 cures, the L-shaped rod 61 and the receiving seat 1 are firmly fixed. Then, the spring 62 is sleeved and the double support point assembly is completed to ensure that the overall structure is assembled in place.

[0046] When the shutter is in operation, the lateral force and alternating load generated by the rotation of the balance shaft 3 act on the L-shaped rod 61. Since the L-shaped rod 61 has a square cross-section, its surface contact with the L-shaped groove 18 can evenly distribute the force and avoid local stress concentration. At the same time, the sufficient glue 9 filled in the flared opening forms a larger bonding and fixing area, further improving the connection rigidity between the L-shaped rod 61 and the support seat 1, and preventing the L-shaped rod 61 from loosening or shifting under load. The torsional resistance of the square cross-section and the firm fixing effect of the glue 9 in the flared opening work together to ensure that the L-shaped rod 61 always maintains a stable posture, providing a reliable installation base for the spring 62, ensuring that the elastic buffer and floating support functions of the spring 62 are stably performed, and thus maintaining the accuracy of the rotation trajectory of the balance shaft 3.

[0047] Preferably, the shutter shutter blade receiving structure further includes a fixed upright plate 7, and the U-shaped frame 21 of the receiving cover plate 2 is provided with a floating limiting cavity 29 for the fixed upright plate 7 to be embedded in. When the shutter is working, the alternating load generated by the rotation of the electromagnetic drive swing shaft 3, equipment vibration, and environmental thermal stress will cause the receiving cover plate 2 to have a slight displacement tendency. At this time, the cooperation structure between the fixed upright plate 7 and the floating limiting cavity 29 plays a role: on the one hand, the cavity wall of the floating limiting cavity 29 can absorb part of the load through its own slight elastic deformation, buffer the displacement impact, and avoid stress concentration caused by rigid constraints; on the other hand, the fixed upright plate 7 limits the excessive displacement of the receiving cover plate 2 in the horizontal and vertical directions by fitting and limiting the cavity wall of the floating limiting cavity 29, preventing the receiving cover plate 2 from being misaligned with the receiving seat 1, and ensuring the stability of the connection between the two; at the same time, the reserved floating gap provides compensation space for the thermal expansion and contraction of the receiving cover plate 2, avoiding structural jamming or deformation caused by temperature changes, and ensuring the stable operation of the entire receiving structure.

[0048] This invention also provides a shutter device, including the shutter light-shielding blade receiving structure of any of the above embodiments. This shutter device, relying on the high rigidity design of the receiving structure, effectively solves the defect of easy deformation in traditional cantilever mounting plates; combined with the precise fit between the swing shaft 3 and the shaft hole, and the buffering and vibration reduction effect of the floating fulcrum, it can ensure the coaxiality of the swing shaft 3 for a long time, avoiding problems such as jamming, abnormal noise, and interference friction of the light-shielding blade 4; even under long-term high-frequency operation, vibration, or temperature fluctuation environments, it can still maintain a stable operating state, significantly reducing the overall failure risk of the shutter device due to the failure of the support structure.

[0049] The precise constraint of the pivot shaft 3 by the supporting structure and the precise adaptation of the electromagnetic drive enable precise control of the rotation angle of the light-shielding blade 4, significantly reducing the error in light transmission adjustment. At the same time, the supporting structure effectively avoids problems such as light leakage and exposure deviation caused by deformation in traditional structures, ensuring that the shutter device can achieve stable exposure control under different working conditions, providing a high-quality imaging foundation for precision optical equipment and adapting to the needs of high-quality imaging.

[0050] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A shutter shutter blade receiving structure, characterized in that: The device includes an upright receiving seat, a receiving cover plate that mates with the back of the receiving seat, a swing shaft that is rotatably connected to the receiving seat and the receiving cover plate at both ends, and light-shielding blades disposed on the swing shaft. The receiving seat includes an inverted bracket and a central block disposed in the middle of the inverted bracket, thereby forming a first upper fitting groove and a first lower fitting groove. The central block has a C-shaped cavity for accommodating the swing shaft and is rotatably connected to one end of the swing shaft. The receiving cover plate includes an inverted frame and a cover body disposed on the inverted frame. The cover body is rotatably connected to the other end of the swing shaft, thereby forming a second upper fitting groove corresponding to the first upper fitting groove and a second lower fitting groove corresponding to the first lower fitting groove. The cover body of the receiving cover plate and the central block of the receiving seat are joined together and then fitted with a square sleeve.

2. The shutter light-shielding blade receiving structure according to claim 1, characterized in that: The center block of the receiving seat has at least two positioning blind holes, and the cover of the receiving cover plate has positioning through holes corresponding to the positioning blind holes. Positioning pins are inserted into the positioning through holes and positioning blind holes.

3. The shutter light-shielding blade receiving structure according to claim 1, characterized in that: The swing shaft includes a shaft head and end shafts disposed on both ends of the shaft head. The central block has a first shaft hole that is rotatably connected to the corresponding end shaft, and the cover has a second shaft hole that is rotatably connected to the corresponding end shaft.

4. The shutter light-shielding blade receiving structure according to claim 1, characterized in that: The receiving seat is provided with an upper limit block and a lower limit block for limiting the swing shaft.

5. The shutter light-shielding blade receiving structure according to claim 1, characterized in that: The receiving seat is provided with a docking hole at the corner, and the receiving cover is provided with a docking protrusion corresponding to the docking hole.

6. The shutter light-shielding blade receiving structure according to claim 1, characterized in that, The top and bottom of the support are equipped with floating fulcrum structures.

7. The shutter light-shielding blade receiving structure according to claim 6, characterized in that: The receiving seat has an L-shaped groove, and the floating fulcrum structure includes an L-shaped rod inserted into the L-shaped groove and a spring sleeved on the vertical rod of the L-shaped rod. The L-shaped rod is fixed to the receiving seat with glue.

8. The shutter light-shielding blade receiving structure according to claim 7, characterized in that: The insertion end of the L-shaped groove has an outward flare structure, and the cross-section of the L-shaped rod is square.

9. The shutter light-shielding blade receiving structure according to claim 6, characterized in that: It also includes a fixed upright plate, and the C-shaped frame that receives the cover plate is provided with a floating limiting cavity for the fixed upright plate to be embedded in.

10. A shutter device, characterized in that: Includes the shutter shading blade receiving structure as described in any one of claims 1 to 9.

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