Shutter assembly and slit-type large-format scanning camera

Abstract

The utility model relates to the technical field of optical devices, in particular to a shutter assembly and a slit type large-format scanning camera, the shutter assembly comprises a film box, a slit scanning mechanism and a linear driving mechanism, and a photosensitive component is arranged in the film box; the gap scanning mechanism comprises a bearing part and a rigid insertion sheet; the bearing part is in guide fit with the film box; the rigid insertion sheet is inserted into the film box, two ends of the rigid insertion sheet are fixed on the bearing component, and a gap is formed in the rigid insertion sheet; the linear driving mechanism comprises a supporting part, a driving part and a transmission part, and the driving part is arranged on the supporting part; the transmission part is arranged on the supporting part and is in transmission fit with the driving part, and the transmission part is connected with the bearing part. According to the utility model, the driving part and the transmission part in the linear driving mechanism are matched to realize the rapid and slow linear motion of the bearing part, so as to drive the rigid insertion sheet to stably scan the photosensitive part and ensure that the light is irradiated on the photosensitive part in an accurate slit form, and the high-quality and high-resolution imaging effect can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of optical device technology, and in particular to a shutter assembly and a slit-type large format scanning camera. Background Technology

[0002] A slit shutter primarily refers to a focal plane shutter in mechanical shutters. It consists of a front curtain and a rear curtain, typically made of metal or other durable materials. The front and rear curtains move sequentially during exposure, controlling the entry and cut-off of light. The slit shutter includes a drive mechanism and a transmission device. The drive mechanism transmits power to the shutter curtain via the transmission device, driving the shutter curtain's movement.

[0003] In related technologies, the drive components and transmission devices used in slit shutters have poor stability and complex structure. For fast-moving scenes, they cannot clearly freeze the moment, resulting in poor image resolution and quality. Utility Model Content

[0004] This utility model provides a shutter assembly and a slit-type large format scanning camera to solve the above-mentioned technical defects in the prior art. By cooperating with the driving component and transmission component in the linear drive mechanism, the fast and slow linear motion of the bearing component is realized, so as to drive the rigid insert to stably scan the photosensitive component, ensuring that the light shines on the photosensitive component in an accurate slit form, and thus obtains high-quality, high-resolution imaging effect.

[0005] The first aspect of this utility model provides a shutter assembly, comprising:

[0006] A film canister, inside which are photosensitive components;

[0007] The slit scanning mechanism includes:

[0008] The supporting component engages with the guide of the film cassette.

[0009] A rigid insert is inserted into the film cassette, with its two ends fixed to the supporting component, and the rigid insert has a gap.

[0010] Linear drive mechanism, including:

[0011] Support components;

[0012] A driving component is provided on the supporting component;

[0013] A transmission component is disposed on the support component and is in transmission cooperation with the drive component. The transmission component is connected to the bearing component and is used to drive the bearing component to move in a straight line, thereby causing the rigid insert to move in position to scan the photosensitive component in a slit form.

[0014] According to the shutter assembly provided by this utility model, the rigid insert includes a first insert portion and a second insert portion arranged symmetrically;

[0015] The gap is located between the first insert portion and the second insert portion;

[0016] The supporting components are respectively clamped in the first insert portion and the second insert portion.

[0017] According to the shutter assembly provided by this utility model, the supporting component includes:

[0018] The supporting body is guided and matched with the film cassette and connected to the transmission component;

[0019] Two clamping mechanisms are symmetrically arranged near both ends of the supporting body. One clamping mechanism is used to clamp the first insert portion, and the other clamping mechanism is used to clamp the second insert portion.

[0020] According to the shutter assembly provided by this utility model, each of the clamping mechanisms includes:

[0021] The support component is snapped into the bearing body and fixedly connected to the bearing body;

[0022] A clamping member, hinged to the support member, and adapted to cooperate with the support member to clamp a corresponding rigid insert portion;

[0023] A locking component is hinged to and cooperates with the support to lock the clamping member.

[0024] According to the shutter assembly provided by this utility model, the locking component includes:

[0025] The connecting body has one end hinged to the support member;

[0026] A locking body is hinged to the other end of the connecting body, the hinge center of the locking body is eccentrically located relative to the center of the locking body, and the locking body is adapted to rotate to lock the support member.

[0027] According to the shutter assembly provided by this utility model, the support member includes:

[0028] The first support part is fitted onto the bearing body and is fixedly connected to the bearing body;

[0029] The second support portion is arranged perpendicularly to the first support portion and forms an arc transition section at the connection with the first support portion;

[0030] Both the clamping member and the locking member are connected to the second support portion.

[0031] According to the shutter assembly provided by this utility model, the transmission component includes:

[0032] A ball screw is rotatably mounted on the support member, and the ball screw is in transmission engagement with the output shaft of the drive member;

[0033] Two guide members are disposed opposite to each other on both sides of the support member. The two guide members are located on both sides of the ball screw and are arranged parallel to the ball screw.

[0034] At least two sliders are respectively embedded between two oppositely arranged guide members, each slider is driven by the ball screw and slides with the guide member;

[0035] The supporting component is fixedly connected to each of the sliders.

[0036] According to the shutter assembly provided by this utility model, the transmission component further includes:

[0037] A height compensation component is fixedly connected to each of the sliders;

[0038] The supporting component is mounted on the height compensation component and is fixedly connected to the slider through the height compensation component.

[0039] According to the shutter assembly provided by this utility model, the transmission component further includes:

[0040] The detection assembly includes a detection element and a trigger element. The trigger element is disposed on the slider, and the detection element is disposed on the guide and located on the movement path of the trigger element.

[0041] A second aspect of this utility model provides a slit-type large-format scanning camera, comprising:

[0042] Fuselage structure;

[0043] The lens module is located in the body structure;

[0044] And the shutter assembly described in any of the above, wherein the shutter assembly is disposed in the body structure and located in front of the lens module.

[0045] The shutter assembly provided by this utility model achieves fast and slow linear motion of the bearing component through the cooperation of the driving component and the transmission component in the linear drive mechanism, so as to drive the rigid insert to stably scan the photosensitive component, ensuring that the light shines on the photosensitive component in an accurate slit form, and thus obtains high-quality, high-resolution imaging effect.

[0046] Because the linear drive mechanism uses a servo motor and a ball screw structure, the precise control characteristics of the servo motor and the stable transmission performance of the ball screw ensure that the shutter assembly can work accurately according to the preset parameters during each shot, improving shooting stability and making the quality of the captured photos more stable and reliable.

[0047] Furthermore, the film cassette, slit scanning mechanism, and linear drive mechanism achieve an efficient layout within a limited space. This allows the imaging device (camera) to maintain a small size while possessing high-performance shutter functionality, facilitating miniaturization and portability, making it convenient for users to carry and use. The rigid insert in the slit scanning mechanism is clamped onto the supporting component using a thin metal sheet, occupying less space compared to traditional shutter structures, further optimizing the space utilization of the shutter assembly.

[0048] Furthermore, the slit-type large-format scanning camera provided by this utility model, because it includes the aforementioned shutter assembly, possesses all the advantages of the aforementioned shutter assembly. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the shutter assembly provided in an embodiment of the present invention.

[0051] Figure 2 This is a schematic diagram of the film cartridge side of the shutter assembly provided in this embodiment of the utility model.

[0052] Figure 3 This is a schematic diagram of the other side of the film cartridge in the shutter assembly provided in this embodiment of the utility model.

[0053] Figure 4 This is a schematic diagram of the linear drive mechanism in the shutter assembly provided in this embodiment of the utility model.

[0054] Figure 5 This is a partial structural schematic diagram of the slit scanning mechanism in the shutter assembly provided in this embodiment of the utility model.

[0055] Figure 6 yes Figure 5The front view of the clamping mechanism in the slit scanning mechanism shown.

[0056] Figure 7 yes Figure 5 This is one of the schematic diagrams showing the usage state of the clamping mechanism in the slit scanning mechanism.

[0057] Figure 8 yes Figure 5 The second schematic diagram shows the usage state of the clamping mechanism in the slit scanning mechanism.

[0058] Figure 9 yes Figure 5 The diagram shown is the third one illustrating the usage state of the clamping mechanism in the slit scanning mechanism.

[0059] Figure 10 yes Figure 5 The front view of the supporting body in the slit scanning mechanism shown.

[0060] Figure 11 This is a schematic diagram of the height compensation component in the shutter assembly provided in this embodiment of the utility model.

[0061] Figure 12 This is a schematic diagram of the film cartridge in the shutter assembly provided in this embodiment of the utility model.

[0062] Figure 13 This is a partial structural diagram of the film cartridge in the shutter assembly provided in this embodiment of the utility model.

[0063] Figure 14 This is a partial structural diagram of the film cartridge in the shutter assembly provided in this embodiment of the utility model.

[0064] Figure 15 This is a schematic diagram of the film cartridge sealing in the shutter assembly provided in this embodiment of the utility model.

[0065] Figure 16 This is a stress test model diagram of the linear drive mechanism in the shutter assembly provided in this utility model embodiment (the color spectrum represents the corresponding stress value, and the value below the color spectrum is the maximum yield value).

[0066] Figure 17 This is a test model diagram of the tensile and compressive stress of the linear drive mechanism in the shutter assembly provided in this embodiment of the utility model (the light-colored area is under tension, and the dark-colored area is under compression).

[0067] Figure 18 This is a strength verification model diagram (relative displacement value) of the linear drive mechanism in the shutter assembly provided in this embodiment of the utility model.

[0068] Figure 19This is a strength verification model diagram of the linear drive mechanism in the shutter assembly provided in this utility model embodiment (relative displacement value under 0.57kg load).

[0069] Figure 20 This is a stress test model diagram of the rigid insert in the shutter assembly provided in this utility model embodiment (the color spectrum represents the corresponding stress value).

[0070] Figure 21 This is a test model diagram of the tensile and compressive stress of the rigid insert in the shutter assembly provided in this utility model embodiment (the top and bottom are the tensile areas, and the middle is the compressive area).

[0071] Figure 22 This is a strength verification model diagram (relative displacement value) of the rigid insert in the shutter assembly provided in this embodiment of the utility model.

[0072] Figure 23 This is a stress test model diagram of the support component in the shutter assembly provided in this embodiment of the utility model.

[0073] Figure 24 This is a displacement test diagram of the support member in the shutter assembly provided in this embodiment of the utility model.

[0074] Figure label:

[0075] 10. Film cassette; 11. Photosensitive element; 12. Sealing plate; 121. Slide rail;

[0076] 20. Gap scanning mechanism; 21. Bearing component; 211. Bearing body; 2111. Slot; 212. Clamping mechanism; 2121. Support member; 2121-1. First support part; 2121-2. Second support part; 2122. Clamping member; 2123. Connecting body; 2124. Locking body; 2125. Buffer pad; 22. Rigid insert; 221. Gap; 222. First insert part; 223. Second insert part;

[0077] 30. Linear drive mechanism; 31. Support component; 32. Drive component; 33. Transmission component; 331. Ball screw; 332. Guide component; 333. Slider; 334. Height compensation component; 34. Detection assembly; 341. Detection element; 342. Trigger element. Detailed Implementation

[0078] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0079] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0080] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Figure 1 This is a schematic diagram of the shutter assembly provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the film cartridge side of the shutter assembly provided in this embodiment of the utility model. Figure 3 This is a schematic diagram of the other side of the film cartridge in the shutter assembly provided in this embodiment of the utility model. Figure 4This is a schematic diagram of the linear drive mechanism in the shutter assembly provided in this embodiment of the utility model.

[0083] See Figures 1 to 4 This utility model provides a shutter assembly, which includes a film cassette 10, a slit scanning mechanism 20, and a linear drive mechanism 30.

[0084] The film cartridge 10, serving as the basic frame of the entire shutter assembly, can be made of high-strength, lightweight aluminum alloy. Inside the film cartridge 10 is a photosensitive element 11, which can be an image sensor or film, preferably a silver halide film.

[0085] The slit scanning mechanism 20 includes a support component 21 and a rigid insert 22. The support component 21 can be made of aluminum alloy. The support component 21 is guided and engaged with the film cassette 10. That is, the film cassette 10 can be provided with a special guide rail and slot for guiding and engaging with the slit scanning mechanism 20.

[0086] The rigid insert 22 is movably inserted into the film cassette 10, with both ends clamped to the supporting component 21. A slit 221 is formed near the center of the rigid insert 22. When forming the slit 221 on the rigid insert 22, the width and length of the slit 221 need to be processed according to the size of the photosensitive component 11 and the scanning requirements. For example, the width of the slit 221 can be between 0.1 and 1 mm, and high-precision laser cutting or electrical discharge machining technology is used to ensure the accuracy of the slit 221.

[0087] The rigid insert 22 is made of a thin metal sheet, such as spring steel or stainless steel. Since the light-shielding plate of the film cartridge 10 is a 0.76mm thick plastic sheet, its strength meets the requirements under small size (166mm × 106mm). However, the rigid insert 22 provided by this invention has dimensions of 450mm × 106mm × 0.7mm, a slit scanning stroke of 190mm, and a slit of 102mm × 0.5mm in the width direction. This further weakens the rigidity of the rigid insert 22; therefore, flexible materials such as plastic cannot be used for the rigid insert 22.

[0088] It should be noted that a black light-absorbing coating, such as a carbon black coating, can be applied to the surface of the rigid insert 22 to improve its light absorption capacity and reduce the interference of reflected light on the photosensitive component 11.

[0089] The linear drive mechanism 30 includes a support component 31, a drive component 32, and a transmission component 33. The support component 31 can be a frame structure made of high-strength metal materials, such as steel or titanium alloy. The frame design must ensure sufficient rigidity to withstand the working pressure of the drive component 32 and the transmission component 33. The drive component 32 is mounted on the support component 31 and can be a servo motor. The movement of a servo motor is more precise than that of a stepper motor. The servo motor uses an encoder to ensure accuracy. Even a common model servo motor can achieve a pulse equivalent (similar to step angle) of 0.045°, that is, 8000 steps for one revolution at a constant speed, which can meet the shooting requirements of the slit-type large-format scanning camera provided by this utility model.

[0090] For higher precision, a 17-bit encoder with a pulse equivalent of 0.0027466° (meaning 131072 steps per revolution at a constant speed) can be selected, resulting in more detailed images.

[0091] The transmission component 33 is located on the support component 31 and can be a high-precision ball screw structure. The ball screw structure consists of a ball screw 331 and a slider 333. The ball screw 331 is connected to the output shaft of the drive component 32, and the slider 333 is connected to the bearing component 21. The transmission component 33 is in transmission cooperation with the drive component 32 and is connected to the bearing component 21 to drive the bearing component 21 to move linearly, thereby moving the rigid insert 22 to scan the photosensitive component 11 in a slit-like manner.

[0092] When the shutter assembly is activated, the drive member 32 of the linear drive mechanism 30 is in the initial position. At this time, the support member 21 is in the initial position, and the gap 221 of the rigid insert 22 and the photosensitive member 11 are in the initial relative position, which may be because the gap 221 is not within the effective scanning area of ​​the photosensitive member 11.

[0093] The control system sends a command to the drive member 32 of the linear drive mechanism 30, and the drive member 32 starts to work, driving the carrier member 21 to start moving in a straight line through the transmission member 33. The movement of the carrier member 21 drives the rigid insert 22 to move towards the photosensitive member 11 until the gap 221 approaches the edge of the effective scanning area of ​​the photosensitive member 11.

[0094] As the drive unit 32 continues to operate, the carrier component 21 drives the rigid insert 22 to continue moving at a stable speed. The slit 221 on the rigid insert 22 gradually sweeps across the effective area of ​​the photosensitive component 11 in a slit-like manner. During this process, the photosensitive component 11 begins to receive light signals passing through the slit 221. The linear drive mechanism 30 precisely controls the movement of the carrier component 21 according to preset scanning speed and scanning range parameters. For example, if a full scan of the photosensitive component 11 is required, the drive unit 32 will continue to operate until the slit 221 of the rigid insert 22 completely leaves the effective area of ​​the photosensitive component 11.

[0095] Once the slit 221 of the rigid insert 22 is completely away from the effective area of ​​the photosensitive element 11, the drive element 32 of the linear drive mechanism 30 stops working. The support element 21 stops moving, the shutter assembly completes one scan cycle, and waits for the next scan command or enters the power-off state.

[0096] It is understood that the shutter assembly provided in this embodiment of the present invention achieves rapid linear motion of the bearing component 21 through the cooperation of the driving component 32 and the transmission component 33 in the linear drive mechanism 30, so as to drive the rigid insert 22 to stably scan the photosensitive component 11, ensuring that the light shines on the photosensitive component 11 in an accurate slit form, thereby obtaining a high-quality, high-resolution imaging effect.

[0097] Because the linear drive mechanism 30 adopts a servo motor and ball screw 331 structure, the precise control characteristics of the servo motor and the stable transmission performance of the ball screw 331 ensure that the shutter assembly can work accurately according to the preset parameters during each shot, improving the shooting stability and making the quality of the captured photos more stable and reliable.

[0098] Furthermore, the film cartridge 10, slit scanning mechanism 20, and linear drive mechanism 30 achieve an efficient layout within a limited space. This allows the imaging device (camera) to maintain a small size while possessing high-performance shutter functionality, which is beneficial for the miniaturization and portability of the camera, making it convenient for users to carry and use. The rigid insert 22 in the slit scanning mechanism 20 is clamped onto the support component 21 using a thin metal sheet, which occupies less space compared to traditional shutter structures, further optimizing the space utilization of the shutter assembly.

[0099] Continue reading Figure 2In some embodiments of this invention, since the film cassette 10 is not symmetrically placed when inserted into the back panel, the slit scanning stroke is designed to be symmetrical to the center of the back panel exposure area for ease of control, requiring the rigid insert 22 to extend by the same distance at both ends. Therefore, the rigid insert 22 includes a symmetrically arranged first insert portion 222 and a second insert portion 223. This symmetrical structure allows the rigid insert 22 to distribute stress more evenly when subjected to force.

[0100] The supporting components 21 are respectively clamped in the first insert portion 222 and the second insert portion 223. The first insert portion 222 and the second insert portion 223 must leave a portion covered by the clamping mechanism. The whole structure forms a mutually supportive system. During the operation of the shutter assembly, if it is subjected to external vibration or impact, the symmetrical structure can prevent the insert from twisting or deforming, improve the overall rigidity of the rigid insert 22, thereby ensuring the shape and position accuracy of the gap 221 and ensuring the accuracy of the scanning process.

[0101] Compared to the single-sided clamping method of the rigid insert 22, the double-sided clamping connection method of the rigid insert 22 makes the rigid insert 22 more stable during operation. When the bearing component 21 moves linearly, it can drive the rigid insert 22 to move more stably, reducing the risk of loosening or detachment of the connection and improving the reliability of the shutter assembly during long-term operation.

[0102] The slit 221, located between the first insert portion 222 and the second insert portion 223, helps optimize the distribution of light as it passes through the slit 221 onto the photosensitive element 11. Due to the symmetrical structure, light can be more evenly distributed on the photosensitive element 11 as it passes through the slit 221, reducing imaging errors caused by uneven light distribution. For example, during scanning, it avoids image shadows or uneven brightness caused by uneven light distribution on one side, thus improving image quality.

[0103] Figure 5 This is a partial structural schematic diagram of the slit scanning mechanism in the shutter assembly provided in this embodiment of the utility model.

[0104] See Figure 5 In some embodiments of this utility model, the supporting component 21 includes a supporting body 211 and two clamping mechanisms 212. The supporting body 211 may be a rectangular metal structure, such as aluminum alloy, to reduce weight while ensuring strength.

[0105] The supporting body 211 can be guided and engaged with the film cassette 10 through a combination of a sliding groove and a slider. A connecting hole or connecting groove is provided at the center of the top of the supporting body 211 for secure connection with the transmission component 33. This connection method can be a bolt connection or an embedded connection of a slot and a protrusion, ensuring that no loosening occurs during transmission.

[0106] Two clamping mechanisms 212 are symmetrically arranged near both ends of the supporting body 211. One clamping mechanism 212 is used to clamp the first insert portion 222, and the other clamping mechanism 212 is used to clamp the second insert portion 223. Since the rigid insert 22 is weakened after the gap 221 is opened, the rigid insert 22 must not be subjected to a pushing force when the linear drive mechanism 30 drives it to move; otherwise, the connection between the upper and lower parts of the gap 221, being the weakest point, will deform first. Therefore, the two clamping mechanisms 212 are set to ensure that the rigid insert 22 is subjected to a tensile force during linear movement.

[0107] When the shutter assembly is not in operation, the two clamping mechanisms 212 clamp the first insert portion 222 and the second insert portion 223, and the supporting body 211 is located at the initial position of the film cassette 10. At this time, the gap 221 of the rigid insert 22 is in an initial relative position with the photosensitive element 11, for example, the gap 221 is not within the effective scanning area of ​​the photosensitive element 11 at all.

[0108] When the shutter assembly starts working, the drive component 32 of the linear drive mechanism 30 begins to operate, transmitting power to the carrier body 211 via the transmission component 33. Driven by the transmission component 33, the carrier body 211 begins to move linearly along the guide structure of the film cartridge 10.

[0109] Since the two clamping mechanisms 212 firmly clamp the first insert portion 222 and the second insert portion 223, when the carrier body 211 moves, the clamping mechanisms 212 drive the first insert portion 222 and the second insert portion 223 to move synchronously. As the carrier body 211 moves, the gap 221 of the rigid insert 22 gradually approaches the effective scanning area of ​​the photosensitive element 11.

[0110] As the supporting body 211 continues to move, the slit 221 of the rigid insert 22 sweeps across the effective area of ​​the photosensitive element 11 in a slit-like manner. During this process, the photosensitive element 11 receives the light signal passing through the slit 221, and the clamping mechanism 212 maintains stable clamping of the rigid insert 22 throughout the scanning process, ensuring the positional accuracy of the slit 221.

[0111] Once the scan is complete, the drive component 32 of the linear drive mechanism 30 stops working, and the supporting body 211 stops moving. At this time, the gap 221 of the rigid insert 22 completely leaves the effective area of ​​the photosensitive component 11, and the two clamping mechanisms 212 remain in a clamping state on the rigid insert 22, waiting for the next scan operation or a shutdown command.

[0112] This configuration, with the guiding fit between the supporting body 211 and the film box 10, and the two symmetrically positioned clamping mechanisms 212 at both ends, makes the entire supporting component 21 more stable during movement. Whether stationary or in high-speed linear motion, it effectively resists external interference such as vibration and impact, ensuring the positional accuracy of the rigid insert 22, thereby improving the overall stability of the shutter assembly.

[0113] Figure 6 yes Figure 5 The front view of the clamping mechanism in the slit scanning mechanism shown. Figure 7 yes Figure 5 This is one of the schematic diagrams showing the usage state of the clamping mechanism in the slit scanning mechanism. Figure 8 yes Figure 5 The second schematic diagram shows the usage state of the clamping mechanism in the slit scanning mechanism. Figure 9 yes Figure 5 The diagram shown is the third one illustrating the usage state of the clamping mechanism in the slit scanning mechanism.

[0114] See Figures 6 to 9 In some embodiments of this utility model, each clamping mechanism 212 includes a support member 2121 and a clamping member 2122. The support member 2121 can be designed as an "L"-shaped metal structure, for example, made of stainless steel. The support member 2121 has two support arms, one of which is engaged with the bearing body 211.

[0115] A locating pin hole is provided on the mating surface that engages with the bearing body 211. Precise positioning is achieved by the locating pin engaging with the corresponding pin hole on the bearing body 211. Bolts are then used to fix the support member 2121 to the bearing body 211. A hinge hole is provided on the other support arm of the support member 2121 for hinge connection with the clamping member 2122 and the locking member.

[0116] The clamping member 2122 is designed as an approximately arc-shaped metal plate made of hard aluminum alloy. The arc-shaped inner surface matches the outer contour of the rigid insert 22. The clamping member 2122 is hinged to the support member 2121 and is adapted to cooperate with the support member 2121 to clamp the corresponding rigid insert 22.

[0117] The locking component is hinged to and cooperates with the support member 2121 to lock the clamping member 2122. This design, where the locking component and support member 2121 work together to lock the clamping member 2122, ensures that the clamping member 2122 stably holds the rigid insert 22 during shutter assembly operation. Even under high-speed movement or external vibrations and impacts, the rigid insert 22 will not shift, ensuring the normal operation of the shutter assembly and improving scanning accuracy.

[0118] It should be noted that at least one of the clamping member 2122 and the support member 2121 has a buffer pad 2125 on the side facing the rigid insert 22. The buffer pad 2125 is a rubber pad. In addition, the position of the clamping member 2122 can be easily adjusted according to actual needs, which facilitates the accurate placement or removal of the rigid insert 22 in the clamping mechanism 212, thereby improving the efficiency of assembly and maintenance.

[0119] Furthermore, the locking component includes a connecting body 2123 and a locking body 2124. The connecting body 2123 is designed as a slender rod-like structure and is made of high-strength stainless steel. One end of it is provided with a circular hinge hole, and the area around the hinge hole is locally thickened to enhance the strength of this part and prevent deformation or damage during frequent rotation. The other end of the connecting body 2123 is provided with a connecting groove for hinged connection with the locking body 2124.

[0120] The locking body 2124 is a block structure and can be made of engineering plastics (such as polycarbonate) to reduce weight and cost. An eccentric hinge hole is provided at the center of the locking body 2124. The eccentricity of the hinge hole is set so that sufficient displacement can be generated when the locking body 2124 rotates to achieve an effective locking function.

[0121] Continue reading Figure 7 and Figure 8 When the shutter assembly is not in operation or when it is necessary to install or remove the rigid insert 22, the locking body 2124 is in the unlocked state. At this time, the locking body 2124 is away from the support member 2121, and the hinge axis between the connecting body 2123 and the locking body 2124 is in a free state, without any locking force applied.

[0122] Continue reading Figure 9 When it is necessary to lock the clamping member 2122, an external torque is applied to the locking body 2124, causing it to rotate about the hinge center with the connecting body 2123. Since the hinge center of the locking body 2124 is eccentrically positioned relative to its center, the locking body 2124 will generate an eccentric displacement during rotation. At this time, a stable locking structure is formed between the locking body 2124 and the support member 2121, thereby locking the clamping member 2122 in the position of clamping the rigid insert 22.

[0123] When it is necessary to remove the rigid insert 22 or perform maintenance on the shutter assembly, a reverse external torque is applied to the locking body 2124, and the locking body 2124 returns to its initial unlocked state. At this time, the clamping member 2122 can be operated, such as releasing the clamping of the rigid insert 22.

[0124] In this embodiment of the invention, the hinge center of the locking body 2124 is offset, allowing for a large displacement with a small rotation angle, thereby quickly achieving locking and unlocking functions. This design improves the assembly and maintenance efficiency of the shutter assembly and reduces operation time.

[0125] In essence, to ensure rapid clamping of the rigid insert 22, each clamping mechanism 212 is designed as an upper and lower clamping plate, which is convenient to operate. Besides this, the clamping mechanism 212 can also adopt other structures, such as a spring self-locking clamp or a magnetic clamping mechanism. The spring self-locking clamp automatically locks the rigid insert 22 using spring preload, and can be manually unlocked; the magnetic clamping mechanism can use an electromagnetic chuck, which generates a strong magnetic field after being energized to attract ferromagnetic clamps to hold the rigid insert 22.

[0126] Continue reading Figures 7 to 9 In some embodiments of this utility model, the support member 2121 includes a first support portion 2121-1 and a second support portion 2121-2. The first support portion 2121-1 can be designed as a flat, elongated structure, made of high-strength aluminum alloy. The shape of the portion of the first support portion 2121-1 that is engaged with the bearing body 211 matches the slot 2111 of the bearing body 211. Multiple bolt holes are provided on the connection surface between the first support portion 2121-1 and the bearing body 211, and high-strength bolts are used to fix the first support portion 2121-1 to the bearing body 211.

[0127] The second support portion 2121-2 is arranged perpendicularly to the first support portion 2121-1 to form an "L" shape, and forms an arc transition section at the connection with the first support portion 2121-1; wherein, the clamping member 2122 and the locking member are both connected to the second support portion 2121-2.

[0128] In this embodiment, the first support part 2121-1 is fixedly connected to the bearing body 211, and the second support part 2121-2 is perpendicularly arranged to the first support part 2121-1 with an arc transition section at the connection point. This makes the overall structure of the support member 2121 more stable and can effectively resist various forces generated during the operation of the shutter assembly, such as vibration and impact, ensuring stable clamping and accurate scanning of the rigid insert 22.

[0129] The second support portion 2121-2 serves as the connection structure between the clamping member 2122 and the locking member, effectively transmitting force to the first support portion 2121-1, which then transmits it to the supporting body 211. This rational force transmission path ensures that the force is evenly distributed during clamping, locking, and scanning processes, reducing the possibility of local stress concentration and improving the overall reliability of the shutter assembly.

[0130] Continue reading Figure 4 In some embodiments of this utility model, the transmission component 33 includes a ball screw 331, two guide members 332 and at least two sliders 333.

[0131] The ball screw 331 is rotatably mounted on the support member 31. The ball screw 331 is driven by the output shaft of the drive member 32. The drive connection between the ball screw 331 and the output shaft of the drive member 32 is achieved by a coupling or a key.

[0132] Two guide members 332 are disposed opposite to each other on both sides of the support member 31. The two guide members 332 are located on both sides of the ball screw 331. The guide members 332 are arranged parallel to the ball screw 331. The guide members 332 are designed as linear guides, and the length of the guides is determined according to the travel requirements of the shutter assembly.

[0133] At least two sliders 333 are respectively embedded between two guide members 332 arranged opposite to each other. Each slider 333 is driven by a ball screw 331 and slides with the guide member 332. The bearing member 21 is fixedly connected to each slider 333.

[0134] The combination of the ball screw 331 and the linear guide rail enables the transmission component 33 to achieve high transmission accuracy. The precise pitch of the ball screw 331 and the accurate cooperation between the slider 333 and the ball screw 331 and the guide 332 can precisely control the movement distance and speed of the bearing component 21. During the scanning process of the shutter assembly, the position of the photosensitive component 11 can be accurately controlled through the gap 221 of the rigid insert 22, improving the scanning resolution and image quality.

[0135] The guide component 332 (linear guide rail) provides stable guidance for the slider 333, ensuring the linearity of the slider 333 during movement. Even under high-speed movement or the presence of certain external disturbances, the slider 333 will not deviate or wobble. This stable motion performance is transmitted to the bearing component 21 and the rigid insert 22, ensuring the stability of the scanning process and reducing imaging errors caused by motion instability.

[0136] The effective transmission between the ball screw 331 and the output shaft of the drive component 32, as well as the reasonable cooperation between the slider 333, the ball screw 331, and the guide component 332, enables the power generated by the drive component 32 to be efficiently transmitted to the bearing component 21. Throughout the transmission process, energy loss is minimal, allowing for stable movement of the bearing component 21 with relatively low power input, thus improving the working efficiency of the shutter assembly.

[0137] Figure 10 yes Figure 5 The front view of the supporting body in the slit scanning mechanism shown. Figure 11 This is a schematic diagram of the height compensation component in the shutter assembly provided in this embodiment of the utility model.

[0138] Continue reading Figure 5 And see also Figure 10 and Figure 11 In some embodiments of this utility model, the transmission component 33 further includes a height compensation component 334, which is fixedly connected to each slider 333; wherein, the bearing component 21 is engaged with the height compensation component 334 and is fixedly connected to the slider 333 through the height compensation component 334.

[0139] In the transmission component 33, the height of the slider 333 directly affects the space occupied by the entire transmission structure. When the height compensation component 334 is fixedly connected to the slider 333, and the bearing component 21 is mounted on the height compensation component 334, the installation height of the bearing component 21 relative to the slider 333 can be adjusted without changing the structural height of the slider 333 itself. This allows for the selection of a relatively low-height slider 333 when designing the overall structure. For example, if the bearing component 21 is directly mounted on the slider 333, a higher slider 333 might be required to meet the spatial relationship with other components. However, by using the height compensation component 334, the height requirement for the slider 333 can be reduced, thus making the entire transmission component 33 more compact in the vertical direction.

[0140] Lowering the height of slider 333 indirectly lowers the center of gravity of the supporting component 21 and the entire transmission component 33. With a lower slider 333, the center of gravity of the entire structure is closer to the bottom of the supporting component 31. During shutter assembly operation, especially at high speeds or under external disturbances (such as vibration), a lower center of gravity helps improve the stability of the entire structure. For example, vertical swaying is more easily suppressed due to a lower center of gravity, reducing structural instability that could occur due to a high center of gravity, thereby improving the operational reliability of the shutter assembly.

[0141] Continue reading Figure 4In some embodiments of this utility model, the transmission component 33 further includes a detection component 34, which includes a detection element 341 and a trigger element 342. The trigger element 342 is disposed on the slider 333, and the detection element 341 is disposed on the guide 332 and located on the movement path of the trigger element 342.

[0142] The detection element 341 can be a photoelectric sensor, such as a reflective photoelectric sensor. The trigger element 342 is designed as a thin metal sheet with good strength and wear resistance. The trigger element 342 is fixedly connected to the slider 333 by welding or mechanical clamping to ensure that the trigger element 342 will not loosen during the movement of the slider 333.

[0143] When the shutter assembly is not in operation, slider 333 is in its initial position, and trigger element 342 is also in its initial position. At this time, detection element 341 is in standby mode, and its light-emitting diode continuously emits light, but the photodetector does not receive a signal reflected or blocked by trigger element 342 (depending on the type of photodetector).

[0144] When the shutter assembly starts operating, slider 333 moves along guide 332 under the drive of ball screw 331. As slider 333 moves, trigger element 342 also moves. When trigger element 342 enters the detection area of ​​detection element 341 (if it is a reflective photoelectric sensor, trigger element 342 enters the area where reflected light can be detected; if it is a light-blocking photoelectric sensor, trigger element 342 begins to block light), the photoelectric receiver of detection element 341 receives the changed signal.

[0145] If the control system determines that the slider 333 has reached a specific position, for example, when the slider 333 reaches the end of its stroke, the control system can stop the operation of the drive component 32 based on the signal transmitted from the detection element 341, thereby preventing the slider 333 from continuing to move beyond the normal range. Alternatively, in some operations requiring precise control, such as when the shutter assembly is performing a scanning operation, the starting and ending points of the scanning of the rigid insert 22 on the support component 21 can be precisely controlled based on the detected position of the slider 333.

[0146] The detection component 34 can accurately monitor the position of the slider 333. Since the detection element 341 is located on the movement path of the trigger element 342, the position information of the slider 333 can be acquired in real time during the movement of the slider 333. This accurate position monitoring is very important for the normal operation of the shutter assembly. For example, during the scanning process of controlling the rigid insert 22, it can ensure the accuracy of the start and end positions of the scan, thereby improving the quality and accuracy of the scanned image.

[0147] By detecting the position of slider 333, when slider 333 reaches its travel limit, the control system can promptly receive the signal from detection element 341 and stop the operation of drive component 32. This effectively prevents slider 333 from continuing to move beyond its normal working range, avoids collisions between slider 333 and guide component 332 or other components, protects the various components of transmission component 33, and extends the service life of the equipment.

[0148] Figure 12 This is a schematic diagram of the film cartridge in the shutter assembly provided in this embodiment of the utility model. Figure 13 This is a partial structural diagram of the film cartridge in the shutter assembly provided in this embodiment of the utility model. Figure 14 This is a partial structural diagram of the film cartridge in the shutter assembly provided in this embodiment of the utility model. Figure 15 This is a schematic diagram of the film cartridge sealing in the shutter assembly provided in this embodiment of the utility model.

[0149] See Figures 12 to 15 In some embodiments of this utility model, the film box 10 includes a main body and a sealing plate 12. The sealing plate 12 is provided with a sliding groove 121 for the rigid insert 22 to be inserted. Both sides of the sliding groove 121 are treated with black velvet cloth to block light and prevent light leakage.

[0150] Because the length of the light-shielding insert in the prior art is limited and it will not penetrate the overall structure of the film cassette 10, one end of the film cassette 10 is closed. However, the rigid insert 22 provided in this embodiment penetrates the overall structure of the film cassette 10. The sealing plate 12 itself is small in size, and it is difficult to cut a notch on the sealing plate 12. Therefore, this invention sets one end as a fixed sealing plate 12, and it is no longer used as a hinge.

[0151] In addition, in order to accommodate the movement of the rigid insert 22, the back of the camera needs to have a clearance notch to prevent part of the rigid insert 22 from being blocked by the back of the camera after the film cassette 10 is inserted into the camera.

[0152] Figure 16 This is a stress test model diagram of the linear drive mechanism in the shutter assembly provided in this utility model embodiment (the color spectrum represents the corresponding stress value, and the value below the color spectrum is the maximum yield value).

[0153] Depend on Figure 16 It can be seen that the rigidity of the linear drive mechanism in the shutter assembly is sufficient to meet the requirements of camera support and precise movement.

[0154] Figure 17 This is a test model diagram of the tensile and compressive stress of the linear drive mechanism in the shutter assembly provided in this embodiment of the utility model (the light-colored area is under tension, and the dark-colored area is under compression).

[0155] Depend on Figure 17 It can be seen that the linear drive mechanism in the shutter assembly can effectively control the peak value of tensile / compressive stress and ensure uniform distribution of stress, effectively reduce stress concentration points, and has a reasonable structural design.

[0156] See Figure 16 and Figure 17 Under a 20kg load, the linear drive mechanism exhibits good overall mechanical characteristics, with a deformation of 0.015mm at the maximum displacement and a relative displacement of approximately 0.007mm in the main moving areas, which meets the design requirements.

[0157] Figure 18 This is a strength verification model diagram (relative displacement value) of the linear drive mechanism in the shutter assembly provided in this embodiment of the utility model.

[0158] Depend on Figure 18 It can be seen that the linear drive mechanism in the shutter assembly ensures that the overall deformation is small under the maximum lens load required during installation and shooting, and will not affect the final image.

[0159] Figure 19 This is a strength verification model diagram of the linear drive mechanism in the shutter assembly provided in this utility model embodiment (relative displacement value under 0.57kg load).

[0160] Depend on Figure 19 It can be seen that the actual load of the linear drive mechanism is only 0.57 kg, the maximum displacement is only 0.0004 mm, and the relative displacement of the main moving area is 0.00027 mm, which has no impact on shooting. That is, the linear drive mechanism in the shutter assembly ensures that the overall deformation under the general lens load required during installation and shooting is small and will not affect the final image.

[0161] Figure 20 This is a stress test model diagram of the rigid insert in the shutter assembly provided in this utility model embodiment (the color spectrum represents the corresponding stress value).

[0162] Depend on Figure 20 It can be seen that the structure and strength of the rigid insert in the shutter assembly are sufficient to meet the reasonable resistance during operation.

[0163] Figure 21 This is a test model diagram of the tensile and compressive stress of the rigid insert in the shutter assembly provided in this utility model embodiment (the top and bottom are the tensile areas, and the middle is the compressive area).

[0164] Depend on Figure 21 It can be seen that the rigid insert in the shutter assembly can ensure the safety of the load during operation.

[0165] Figure 22This is a strength verification model diagram (relative displacement value) of the rigid insert in the shutter assembly provided in this embodiment of the utility model.

[0166] Depend on Figure 22 It can be seen that the deformation of the stress concentration area at the edge of the rigid insert in the shutter assembly is within a safe range and does not affect the final imaging effect.

[0167] See Figures 20 to 22 In this embodiment of the invention, 6061 aluminum alloy is selected to make the rigid insert 22, and the rigid insert 22 is checked under a tensile force of 1kg. It can be seen that the performance of using 6061 aluminum alloy as the rigid insert 22 is good. Under the preset tensile force of 1kg, the maximum deformation of the middle gap is only about 0.0017mm, and this degree of deformation has almost no impact on the image quality.

[0168] Figure 23 This is a stress test model diagram of the support component in the shutter assembly provided in this embodiment of the utility model. Figure 24 This is a displacement test diagram of the support member in the shutter assembly provided in this embodiment of the utility model.

[0169] See Figure 23 and Figure 24 Since the support member 2121 is subjected to lateral force when pulling the rigid insert 22, a lateral force of 1 kg is applied to a single support member 2121 for verification. It can be seen that the stress and displacement levels of the support member 2121 meet the requirements.

[0170] The shutter assembly provided in this embodiment is designed in detail according to actual dimensions. First, a solid model is created, and then boundary conditions and loads are determined based on actual stress. Performance analysis shows that the shutter assembly's structure is reasonable and can meet the needs of camera support and precise movement. The shutter assembly has a precise, stable, uniform, and continuous linear motion function. The rigid insert 22 slides smoothly during operation, provides good light blocking, and the gap does not change significantly under the combined action of friction and traction.

[0171] This utility model embodiment also provides a slit-type large format scanning camera, which includes a body structure, a lens module and a shutter assembly of any of the above. The lens module is disposed in the body structure, and the shutter assembly is disposed in the body structure and located in front of the lens module.

[0172] The camera body is constructed from magnesium-aluminum alloy, providing ample strength and stability. The internal structure contains multiple compartments for mounting and securing the lens module, shutter assembly, and other electronic components.

[0173] The camera body features multiple interfaces, including a lens mount, data transfer interfaces (such as USB and HDMI), and a power interface. The lens module is mounted on the camera body via the lens mount, while the shutter assembly is installed inside the camera body, located in front of the lens module. The shutter assembly is secured to the camera body with bolts at specific mounting points. When installing the shutter assembly, it is essential to ensure that the plane of the shutter assembly is perpendicular to the optical axis of the lens module to guarantee optimal optical performance.

[0174] When the slit-type large format scanning camera is powered on, the power system within the camera body supplies power to the lens module, shutter assembly, and other electronic components. The microcontroller on the circuit board begins initialization, performing a self-test on the lens module and shutter assembly. During the self-test, the lens module checks whether its optical components are functioning correctly, such as whether the focusing function is normal and whether the aperture can be adjusted normally; the shutter assembly checks whether its opening and closing function is normal, and whether the detection component 34 detects whether the initial position of the slider 333 is correct, etc.

[0175] The photographer sends shooting commands to the control system within the camera body by operating buttons on the camera body or using a wireless remote control. Upon receiving the commands, the control system first sends focus and aperture adjustment commands to the lens module. The lens module adjusts the lens's focal length and aperture according to the commands to suit the shooting scene. Simultaneously, the control system sends a preparation command to the shutter assembly. The transmission component 33 in the shutter assembly moves the slider 333 to its initial position (if necessary), and the detection component 34 confirms that the positions of all components are normal.

[0176] When shooting conditions are met, the control system sends a shutter opening / closing command to the shutter assembly. The transmission component 33 in the shutter assembly drives the slider 333 to move according to the command, thereby moving the rigid insert 22 to scan the photosensitive element 11 in a slit-like manner. This coordinated operation improves the working efficiency of the slit-type large-format scanning camera, allowing photographers to capture the desired moment more quickly.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A shutter assembly, characterized in that, include: A film canister, inside which are photosensitive components; The slit scanning mechanism includes: The supporting component is guided and fitted with the film cassette. A rigid insert is inserted into the film cassette, with its two ends fixed to the supporting component, and the rigid insert has a gap. Linear drive mechanism, including: Support components; A driving component is provided on the supporting component; A transmission component is disposed on the support component and is in transmission cooperation with the drive component. The transmission component is connected to the bearing component and is used to drive the bearing component to move in a straight line, thereby causing the rigid insert to move in position to scan the photosensitive component in a slit form.

2. The shutter assembly according to claim 1, characterized in that, The rigid insert includes a first insert portion and a second insert portion arranged symmetrically; The gap is located between the first insert portion and the second insert portion; The supporting components are respectively clamped in the first insert portion and the second insert portion.

3. The shutter assembly according to claim 2, characterized in that, The load-bearing component includes: The supporting body is guided and matched with the film cassette and connected to the transmission component; Two clamping mechanisms are symmetrically arranged near both ends of the supporting body. One clamping mechanism is used to clamp the first insert portion, and the other clamping mechanism is used to clamp the second insert portion.

4. The shutter assembly according to claim 3, characterized in that, Each of the clamping mechanisms includes: The support component is snapped into the bearing body and fixedly connected to the bearing body; A clamping member, hinged to the support member, and adapted to cooperate with the support member to clamp a corresponding rigid insert portion; A locking component is hinged to and cooperates with the support to lock the clamping member.

5. The shutter assembly according to claim 4, characterized in that, The locking component includes: The connecting body has one end hinged to the support member; A locking body is hinged to the other end of the connecting body, the hinge center of the locking body is eccentrically located relative to the center of the locking body, and the locking body is adapted to rotate to lock the support member.

6. The shutter assembly according to claim 4, characterized in that, The support member includes: The first support part is fitted onto the bearing body and is fixedly connected to the bearing body; The second support portion is arranged perpendicularly to the first support portion and forms an arc transition section at the connection with the first support portion; Both the clamping member and the locking member are connected to the second support portion.

7. The shutter assembly according to any one of claims 1 to 6, characterized in that, The transmission component includes: A ball screw is rotatably mounted on the support member, and the ball screw is in transmission engagement with the output shaft of the drive member; Two guide members are disposed opposite to each other on both sides of the support member. The two guide members are located on both sides of the ball screw and are arranged parallel to the ball screw. At least two sliders are respectively embedded between two oppositely arranged guide members, each slider is driven by the ball screw and slides with the guide member; The supporting component is fixedly connected to each of the sliders.

8. The shutter assembly according to claim 7, characterized in that, The transmission component also includes: A height compensation component is fixedly connected to each of the sliders; The supporting component is mounted on the height compensation component and is fixedly connected to the slider through the height compensation component.

9. The shutter assembly according to claim 7, characterized in that, The transmission component also includes: The detection assembly includes a detection element and a trigger element. The trigger element is disposed on the slider, and the detection element is disposed on the guide and located on the movement path of the trigger element.

10. A slit-type large-format scanning camera, characterized in that, include: Fuselage structure; The lens module is located in the body structure; And the shutter assembly according to any one of claims 1 to 9, wherein the shutter assembly is disposed in the body structure and located in front of the lens module.

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