Film flushing device

Abstract

The utility model relates to a film flushing device, which belongs to the technical field of photography and video recording and comprises a shell, a winding mechanism arranged in the shell, a knob mechanism for driving the winding mechanism to rotate and a driving mechanism for driving the knob mechanism to rotate. The driving mechanism comprises a driving part, a first transmission gear and an outer bearing; the driving piece is in transmission connection with the first transmission gear; the first transmission gear is in transmission connection with a knob of the knob mechanism; the outer bearing is arranged in a mounting hole of the shell, and the first transmission gear penetrates through one side in the outer bearing and is in transmission connection with the knob, so that the driving piece can drive the knob to rotate through the first transmission gear, and then the winding mechanism on the transmission shaft is driven to rotate. And the first transmission gear is rotationally connected with the mounting hole in the shell through the outer bearing, so that the shaking of the first transmission gear is limited, the phenomenon of film damage or non-uniform washing caused by unstable rotation is reduced, and the film washing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photography and videography, in particular to a film developing device. Background Art

[0002] Film cameras have experienced a resurgence in recent years as photography enthusiasts pursue a retro and unique image quality. Film photography has a unique grain and color reproduction that is difficult to replicate with digital photography.

[0003] With the resurgence of film cameras, the demand for portable film developing devices has also increased. These devices allow photography enthusiasts to develop their own films at home, eliminating the need for a professional darkroom and bulky automatic developing equipment. This provides greater convenience and privacy, while also increasing the fun of photography.

[0004] Traditional processing equipment requires a transmission mechanism to drive the core wheels at both ends of the film core shaft during the processing process to ensure uniform immersion and processing of the film in the processing solution. However, the transmission shaft of the transmission mechanism in existing equipment directly drives the core shaft, which is prone to unstable rotation. Especially during automatic rotation, friction between the transmission gear and the housing, as well as eccentricity, can cause the core wheels on the core shaft to deflect, thereby affecting smooth film winding and processing. Utility Model Content

[0005] The utility model aims to solve the technical problem that the transmission device of the existing film developing device is not stable enough when driving the film core wheel to rotate, thereby affecting the developing effect of the film.

[0006] In order to solve the above technical problems, the present application provides a film developing device, comprising: a housing, a accommodating chamber being provided therein for accommodating developing liquid; a mounting hole being provided on the housing and communicating with the accommodating chamber; a winding mechanism being rotatably provided in the accommodating chamber for winding the developed film; a knob mechanism comprising a transmission shaft and a knob, the knob being fixed at one end of the transmission shaft, and an end of the transmission shaft away from the knob being detachably connected to the winding mechanism; an end of the transmission shaft being fixed to the winding mechanism so that rotating the knob can drive the winding mechanism to rotate; a driving mechanism comprising an outer bearing arranged in the mounting hole, a first transmission gear arranged inside the outer bearing, and a driving member arranged inside the housing and transmission-connected to the first transmission gear; the first transmission gear being coaxially arranged with the transmission shaft and rotationally connected to the housing via the outer bearing; the first transmission gear being transmission-connected to the knob mechanism so that the driving member can drive the first transmission gear to rotate, thereby driving the knob mechanism to rotate.

[0007] In some examples of the present application, the first transmission gear includes a tooth body and a fixing ring connected to one side surface of the tooth body, and the fixing ring is arranged toward the knob; a through hole for the transmission shaft to pass through is provided in the tooth body, the fixing ring is sleeved in the outer bearing, and the end of the fixing ring away from the tooth body is transmission-connected to the knob mechanism.

[0008] In some examples of the present application, a slot is provided on the edge of one end of the fixing ring away from the tooth body, and a boss corresponding to the slot is provided on the knob; the boss is snapped into the slot, so that the first transmission gear is transmission-connected to the knob mechanism.

[0009] In some examples of the present application, the driving mechanism includes a second transmission gear rotatably provided on the housing and a third transmission gear fixed on the driving member, and the outer periphery of the second transmission gear is engaged with the first transmission gear and the third transmission gear; the driving member drives the third transmission gear to rotate, and the second transmission gear follows the third transmission gear to drive the first transmission gear to rotate.

[0010] In some examples of the present application, the shell includes a base and a top cover; the base includes an outer shell and an inner tank arranged in the outer shell, and the inner tank and the outer shell are spaced apart from each other; the top opening of the inner tank is hollow inside to form the accommodating chamber, and the top of the base is provided with an opening that connects the accommodating chamber with the external environment; the top cover is detachably connected to the opening of the base for opening and closing the opening; the shell also includes a gear carrier plate, which is located in the space between the outer shell and the inner tank and is fixed to the inner wall of the outer shell; the outer bearing is fixed in the gear carrier plate; and the second transmission gear is rotatably connected to the gear carrier plate.

[0011] In some examples of the present application, the film developing device also includes an inner bearing, which is located in the gap between the inner tank and the outer shell; the outer wall of the inner tank is recessed with a mounting position, the inner bearing is fixed in the mounting position and is arranged coaxially with the mounting hole; the transmission shaft can pass through the inner bearing and be connected to the winding mechanism.

[0012] In some examples of the present application, the film developing device also includes a waterproof ring, which is arranged in the installation position of the inner tank. The waterproof ring is located between the inner bearing and the outer wall of the inner tank, and is coaxially arranged with the inner bearing to prevent the liquid medicine in the inner tank from flowing out.

[0013] In some examples of the present application, the film developing device also includes a ring; the ring is fixed in the installation position of the inner tank and abuts against the outer wall of the inner tank; a through hole is provided in the ring, and the inner bearing and the waterproof ring are fixed in the through hole of the ring.

[0014] In some examples of the present application, the winding mechanism includes a core shaft and core wheels arranged at both ends of the core shaft; a connecting hole is provided at one end of the core shaft, the connecting hole faces the mounting hole on the shell and is coaxial with the mounting hole; the transmission shaft can move along the axis of the mounting hole to be inserted into the connecting hole, so that the transmission shaft can drive the core shaft to rotate.

[0015] In some examples of the present application, a card plate is provided in the accommodation chamber of the shell; the card plate extends in the vertical direction and is spaced apart from the inner wall of the accommodation chamber; a limiting groove with an open top is provided on the card plate; the core shaft is rotatably accommodated in the limiting groove, and the core wheel is accommodated between the card plate and the inner wall of the accommodation chamber.

[0016] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0017] The present application provides a film developing device, which includes a housing, a winding mechanism disposed within the housing, a knob mechanism that drives the winding mechanism to rotate, and a driving mechanism that drives the knob mechanism to rotate. The present application provides an external bearing sleeved on the first transmission gear of the driving mechanism, and the first transmission gear forms a rotational connection with the mounting hole on the housing via the external bearing to limit the shaking of the first transmission gear. This arrangement enables the first transmission gear to effectively disperse the pressure radially when transmitting to the knob, and will not cause shaking due to factors such as the torque transmitted by the driving member and gravity. This effectively ensures the stable rotation of the first transmission gear, reduces the friction between the first rotating tooth and the housing during rotation, makes the transmission shaft more stable during movement, reduces film damage or uneven washing caused by unstable rotation, and improves the film washing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a film developing device.

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the film developing device.

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the film developing device when the knob mechanism is moved out.

[0021] Figure 4 for Figure 1Schematic diagram of the structure of the base of the film developing device.

[0022] Figure 5 for Figure 4 A structural diagram of the base of the film developing device from another angle.

[0023] Figure 6 for Figure 4 Schematic diagram of the front view of the base of the film developing device.

[0024] Figure 7 for Figure 1 Schematic diagram of the transmission part of the film developing device.

[0025] Figure 8 for Figure 7 Schematic diagram of the connection structure between the knob mechanism and part of the drive mechanism of the film mechanism.

[0026] Figure 9 for Figure 7 Schematic diagram of the exploded transmission part of the film developing device.

[0027] The following are the descriptions of the reference numerals:

[0028] 100. Film developing device; 10. Shell; 11. Base; 110. Mounting hole; 111. Outer shell; 112. Inner tank; 1121. Accommodating chamber; 113. Clamping plate; 1131. Limiting groove; 114. Gear carrier plate; 1141. Positioning column; 1142. Positioning screw; 115. Socket; 12. Top cover; 13. Film compartment; 20. Winding mechanism; 21. Film core shaft; 22. Film core wheel; 30. Knob mechanism; 31. Knob; 311. Boss; 32. Transmission shaft; 40. Driving mechanism; 41. First transmission gear; 411. Gear body; 412. Fixing ring; 4121. Clamping groove; 42. Second transmission gear; 43. Third transmission gear; 44. Driving member; 45. Outer bearing; 50. Ring; 51. Inner bearing; 52. Waterproof ring. DETAILED DESCRIPTION

[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0030] In the description of this application, it should be understood that, in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions will also change accordingly.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0032] See also Figures 1 to 9 This embodiment provides a film developing device 100, which includes a housing 10, a winding mechanism 20 disposed in the housing 10, a knob mechanism 30 driving the winding mechanism 20 to rotate, and a driving mechanism 40 driving the knob mechanism 30 to rotate.

[0033] Among them, the knob mechanism 30 can manually drive the winding mechanism 20 to rotate, and the driving mechanism 40 can drive the knob mechanism 30 to rotate automatically and then drive the winding mechanism 20 to rotate, so that the film rotates in the chemical solution and is wound on the winding mechanism 20 to realize the film washing.

[0034] See also Figure 1 and Figure 2 In some embodiments, a receiving chamber 1121 is provided inside the housing 10 , and the receiving chamber 1121 is used to receive the developing solution and the developed film.

[0035] In some embodiments, the housing 10 may include a base 11 and a top cover 12. A receiving chamber 1121 is disposed within the base 11, and an opening is formed at the top of the base 11. The opening connects the receiving chamber 1121 to the external environment, allowing the film to be taken out from the top opening of the base 11 after development.

[0036] The top cover 12 is removably connected to the top of the base 11 to open and close the opening at the top of the base 11. When the top cover 12 is attached to the top surface of the base 11, it seals the top opening of the base 11, preventing external light from entering and ensuring that the brightness within the accommodating chamber 1121 meets the required environment for film development. When the top cover 12 is removed from the base 11, the opening of the base 11 allows the accommodating chamber 1121 to communicate with the outside world. At this point, the user can remove the film or the film wound on the winding mechanism 20 from the opening of the base 11.

[0037] It is conceivable that the base 11 and the top cover 12 may be connected by a rotational connection or the like, as long as the opening on the accommodation chamber 1121 of the base 11 can be opened or closed.

[0038] See also Figure 2 and Figure 3 In some embodiments, the base 11 may include an outer shell 111 and an inner tank 112. The inner tank 112 is detachably disposed within the outer shell 111 and is a canister structure with an open top and a hollow interior. The hollow interior of the inner tank 112 forms a receiving chamber 1121. The inner tank 112 and the outer shell 111 are spaced apart to form a separation space, which can accommodate a portion of the drive mechanism 40.

[0039] In some other embodiments, the inner tank 112 and the outer shell 111 may also be an integral structure, as long as the base 11 has a receiving chamber 1121 for receiving the medical solution and the film and is capable of fixing the driving mechanism 40 .

[0040] See also Figure 1 In some embodiments, the housing 10 further includes a film compartment 13. The film compartment 13 is detachably connected to the base 11 and is used to accommodate film to be developed. During the development process, the film to be developed is accommodated in the film compartment 13 and connected to a winding mechanism 20 within the base 11. The winding mechanism 20 is capable of rotating and winding the film, transferring the film in the film compartment 13 and winding it onto the winding mechanism 20. During this process, the film is fully contacted with the developing solution to complete the film development process.

[0041] See also Figure 2 and Figure 3 In some embodiments, the winding mechanism 20 is rotatably disposed in the accommodating chamber 1121 to wind the developed film.

[0042] In actual use, one end of the film to be developed can be connected to the winding mechanism 20. As the winding mechanism 20 rotates, the film can be dragged and wound. During the process of the winding mechanism 20 winding the film, the film can fully contact the developing solution in the accommodating chamber 1121, thereby realizing the film washing.

[0043] See also Figure 2 、 Figure 3 and Figure 7In some embodiments, the winding mechanism 20 may include a film core shaft 21 and film core wheels 22 disposed at both ends of the film core shaft 21. The film core shaft 21 is rotatably connected within the accommodating chamber 1121 of the housing 10, and the film core wheels 22 are fixed to both ends of the film core shaft 21. When the film core shaft 21 rotates, it drives the film core wheels 22 at both ends to rotate, thereby winding the film between the two film core wheels 22.

[0044] In some embodiments, annular spiral grooves are provided on the opposite surfaces of the two core wheels 22 , and a notch is provided on the sidewall of each spiral groove to connect two adjacent spiral grooves.

[0045] When developing film, one end of the film is first passed through the notch in the outermost spiral groove of the core wheel 22 and into the innermost spiral groove, where it is secured to the sidewalls of the innermost spiral grooves of the two core wheels 22. As the core shaft 21 rotates the core wheels 22, the film is wound along a spiral line within the spiral grooves of the two opposing core wheels 22, achieving separate winding of the film. This prevents overlapping films from contacting and causing adhesion, thereby improving film imaging yield.

[0046] In some embodiments, the core shaft 21 is a hollow shaft with a hollow structure inside, so that the overall winding mechanism 20 is light in weight and the winding mechanism 20 is easy to take and place.

[0047] See also Figure 4 and Figure 5 In some embodiments, a retaining plate 113 is disposed within the housing chamber 1121 of the housing 10. The retaining plate 113 extends vertically and is spaced apart from the inner wall of the housing chamber 1121. An open-topped retaining groove 1131 is disposed above the retaining plate 113. The core shaft 21 is rotatably received within the retaining groove 1131, and the core wheel 22 is received between the retaining plate 113 and the inner wall of the housing chamber 1121.

[0048] Specifically, two clamping plates 113 are provided, and the two clamping plates 113 are arranged opposite each other. A semicircular retaining groove 1131 is provided on the top of each clamping plate 113. The top of the retaining groove 1131 is open, allowing the tablet core shaft 21 to be directly placed in the retaining groove 1131 of the clamping plate 113, thereby forming a rotational connection with the clamping plate 113. Furthermore, there is a gap between the clamping plate 113 and the sidewall of the accommodating chamber 1121. When the tablet core shaft 21 is placed in the retaining groove 1131 of the clamping plate 113, the tablet core wheels 22 at both ends of the tablet core shaft 21 are precisely located between the clamping plate 113 and the inner sidewall of the accommodating chamber 1121.

[0049] When the film is developed, the user can directly open the top cover 12, then take out the winding mechanism 20 and the film thereon from the accommodating chamber 1121, and place a new winding mechanism 20 into the accommodating chamber 1121, making the entire film retrieval process simpler and more convenient.

[0050] See also Figure 4 and Figure 6 In some embodiments, the housing 10 is provided with a mounting hole 110 that connects the accommodating chamber 1121 . The mounting hole 110 is used for inserting the knob mechanism 30 to drive the winding mechanism 20 to rotate.

[0051] Specifically, the outer shell 111 and the inner tank 112 of the base 11 are provided with a coaxial mounting hole 110, and the axis of the mounting hole 110 is colinear with the axis of the core shaft 21, so that the knob mechanism 30 can pass through the mounting hole 110 on the base 11 and penetrate into the winding mechanism 20, and drive the winding mechanism 20 to rotate.

[0052] See also Figure 2 and Figure 3 In some embodiments, the knob mechanism 30 includes a transmission shaft 32 and a knob 31. The knob 31 is fixed to one end of the transmission shaft 32. The end of the transmission shaft 32, away from the knob 31, is detachably connected to the winding mechanism 20. The transmission shaft 32 is movable along the axis of the mounting hole 110 to be inserted into the winding mechanism 20. The user can manually rotate the knob 31 to rotate the winding mechanism 20, thereby winding the film onto the winding mechanism 20.

[0053] In some embodiments, a connection hole is provided at one end of the core shaft 21, which is disposed toward and coaxial with the mounting hole 110 on the housing 10. The transmission shaft 32 can be inserted into the connection hole of the core shaft 21 along the mounting hole 110 on the housing 10, so that the transmission shaft 32 can drive the core wheels 22 at both ends of the core shaft 21 to rotate, thereby winding the film.

[0054] It should be understood that when the winding mechanism 20 and the film thereon need to be removed, the transmission shaft 32 on the knob mechanism 30 must first be removed from the connecting hole of the film core shaft 21 to release the fixation between the winding mechanism 20 and the base 11 before the winding mechanism 20 and the film thereon can be removed.

[0055] See also Figure 8 and Figure 9In some embodiments, the end of the transmission shaft 32 away from the knob 31 is a rectangular rod; the connection hole on the end surface of the film core shaft 21 is also a rectangular slot. Once the transmission shaft 32 is inserted into the film core shaft 21 through the mounting hole 110, it can transmit torque to drive the film core shaft 21 and the film wheels 22 at both ends of the film core shaft 21 to rotate. To disengage the transmission shaft 32 from the film core shaft, simply grasp the knob 31 and move it outward to disengage the transmission shaft 32 from the film core shaft, allowing the winding mechanism 20 and the film thereon to be removed from the top opening of the base 11.

[0056] It is conceivable that the connecting hole of the core shaft 21 and the end cross-section of the transmission shaft 32 can also be a triangular, regular hexagonal, elliptical or other special-shaped structures, as long as the transmission shaft 32 can transmit torque after docking with the core shaft 21.

[0057] See also Figure 2 In some embodiments, the transmission shaft 32 and the knob 31 can be fixed by bolts. Of course, the knob 31 and the transmission shaft 32 are also set as an integrated structure, as long as the knob 31 can drive the transmission shaft 32 to move and rotate.

[0058] See also Figure 2 and Figure 3 When the transmission shaft 32 is inserted into the film core shaft 21 along the mounting hole 110, the knob 31 protrudes from the outside of the shell 10, allowing the user to manually turn the knob 31, thereby driving the transmission shaft 32 on the knob 31, the film core shaft 21 connected to the transmission shaft 32, and the film core wheels 22 at both ends of the film core shaft 21 to rotate, so as to wind the film.

[0059] See also Figure 2 and Figure 3 In some embodiments, the knob 31 can also be connected to the driving mechanism 40 in a transmission manner, so that the driving mechanism 40 automatically controls the rotation of the transmission shaft 32 on the knob 31.

[0060] See also Figure 2 、 Figure 3 and Figure 9 In some embodiments, the driving mechanism 40 includes a driving member 44 , a first transmission gear 41 and an outer bearing 45 .

[0061] The driving member 44 is disposed within the housing 10 and is in driving connection with the first transmission gear 41. The first transmission gear 41 is coaxially disposed with the transmission shaft 32. An external bearing 45 is disposed within the mounting hole 110 of the housing 10. The first transmission gear 41 is disposed within the external bearing 45, enabling the first transmission gear 41 to rotate relative to the housing 10. The first transmission gear 41 extends through one side of the external bearing 45 and is removably connected to the knob 31, allowing the driving member 44 to drive the knob 31 to rotate via the first transmission gear 41.

[0062] The first transmission gear 41 is driven by a driving member 44 disposed in the housing 10, and the first transmission gear 41 is connected to the knob 31 outside the housing 10, so that the driving member 44 can drive the knob 31 to rotate automatically, thereby driving the winding mechanism 20 to rotate automatically, thereby realizing automatic film washing, thereby effectively improving the degree of automation of the device.

[0063] The first transmission gear 41 of the drive mechanism 40 is fitted with an external bearing 45, which forms a rotational connection with the mounting hole 110 in the housing 10 via the external bearing 45, thereby limiting the wobble of the first transmission gear 41. This effectively disperses the pressure radially when the first transmission gear 41 transmits power to the knob 31, preventing wobble caused by factors such as the torque transmitted by the driver 44 and gravity. This effectively ensures the stable rotation of the first transmission gear 41, reduces friction between the first rotating gear and the housing 10, and ensures smoother operation of the flushing device.

[0064] See also Figure 2 and Figure 9 In some embodiments, the housing 10 further includes a gear carrier plate 114. The gear carrier plate 114 is disposed within the space between the outer shell 111 and the inner tank 112 and is secured to the inner wall of the outer shell 111. A through hole is defined in the gear carrier plate 114, which corresponds to the through holes in the outer shell 111 and the inner tank 112 to form the mounting hole 110 of the housing 10. The outer bearing 45 is secured within the through hole of the gear carrier plate 114, thereby securing the outer bearing 45 to the housing 10.

[0065] The outer bearing 45 is accommodated by the gear carrier plate 114, which can effectively reduce the thickness of the housing 111 and enhance the structural strength of the outer bearing 45 at the mounting location of the housing 10. Of course, in other embodiments, the gear carrier plate 114 may not be provided, and the outer bearing 45 may be directly fixed in the mounting hole 110 of the housing 10.

[0066] See also Figure 9 In some embodiments, the first transmission gear 41 may include a tooth body 411 and a fixing ring 412. The fixing ring 412 is protruding from the end surface of the tooth body 411 facing the knob 31 and is detachably connected to the knob 31. The outer bearing 45 is sleeved on the fixing ring 412 to limit the shaking of the first transmission gear 41.

[0067] The tooth body 411 is a standard gear with a through hole at its center for the transmission shaft 32 to pass through. The tooth body 411 can be connected to the driving member 44 to drive the first transmission gear 41 to rotate around its own axis.

[0068] The fixing ring 412 is an annular ring protruding from the end face of the gear body 411. The diameter of the fixing ring 412 matches the inner ring diameter of the outer bearing 45, so that the fixing ring 412 can be inserted into the outer bearing 45 and have an interference fit with the outer bearing 45, so that the first transmission gear 41 can rotate stably around its own axis.

[0069] See also Figure 8 and Figure 9 In some embodiments, a slot 4121 is defined on the periphery of the fixing ring 412, and a boss 311 is defined on the periphery of the knob 31, corresponding to the slot 4121. When the transmission shaft 32 is connected to the winding mechanism 20, the boss 311 on the knob 31 engages with the slot 4121 on the fixing ring 412, allowing the first transmission gear 41 to drive the knob 31 to rotate.

[0070] Specifically, the outer side of the retaining ring 412, facing the knob 31, is provided with a plurality of mutually spaced slots 4121. Correspondingly, the inner outer ring of the knob 31 is provided with a plurality of mutually spaced bosses 311. When the knob mechanism 30 is connected to the winding mechanism 20, the knob 31 is partially inserted into the outer bearing 45, and the bosses 311 on the knob 31 engage with the slots 4121 on the retaining ring 412 of the first gear, enabling torque transmission between the knob 31 and the first transmission gear 41.

[0071] At this point, the mating portion of the knob 31 and the first transmission gear 41 is located within the outer bearing 45. When the first transmission gear 41 drives the knob 31 to rotate, the knob 31 does not deflect. The engagement of the retaining groove 4121 and the boss 311 allows for quick mating of the knob 31 and the first transmission gear 41. Furthermore, when the transmission shaft 32 is disengaged from the core shaft 21, the knob 31 can also be quickly disengaged from the first transmission gear 41.

[0072] See also Figure 2 and Figure 3 In some embodiments, the driving member 44 is a servo motor, which can be disposed in the top cover 12. When the top cover 12 closes the base 11, the driving member 44 can be in transmission connection with the first transmission gear 41 to drive the first transmission gear 41 to rotate, thereby causing the first transmission gear 41 to drive the knob 31 to rotate.

[0073] Of course, in some other embodiments, the driving member 44 may also be disposed in the base 11 and directly drive the first transmission gear 41 to rotate.

[0074] See also Figure 2 and Figure 3In some embodiments, the drive mechanism 40 includes a second transmission gear 42 and a third transmission gear 43. The second transmission gear 42 is rotatably connected to the gear carrier plate 114 and meshes with the first transmission gear 41. The third transmission gear 43 is fixedly connected to the driving member 44 and meshes with the second transmission gear 42. The first transmission gear 41, the second transmission gear 42, and the third transmission gear 43 are all located in the same vertical plane; the driving member 44 can sequentially drive the third transmission gear 43, the second transmission gear 42, and the first transmission gear 41 to rotate.

[0075] Specifically, such as Figure 9 As shown, the first transmission gear 41 and the second transmission gear 42 are both located in the interval space between the outer shell 111 and the inner tank 112 of the base 11, wherein the first transmission gear 41 is rotationally connected to the gear carrier through the outer bearing 45, and the second transmission gear 42 is rotationally connected to the positioning column 1141 on the gear carrier plate 114 through the positioning screw 1142, so that the first transmission gear 41 and the second transmission gear 42 are rotationally connected to the gear carrier plate 114.

[0076] like Figure 3 and Figure 4 As shown, the third transmission gear 43 is fixed to the driving member 44 of the top cover 12, and the third transmission gear 43 protrudes from the bottom surface of the top cover 12. The base 11 is also provided with a socket 115 for inserting the third transmission gear 43. When the top cover 12 is installed on the top of the base 11 and the opening of the base 11 is closed, the protruding portion of the third transmission gear 43 is inserted into the socket 115 of the base 11 and meshes with the second transmission gear 42 inside the base 11. This allows the driving member 44 to sequentially drive the third transmission gear 43, the second transmission gear 42, and the first transmission gear 41 to rotate.

[0077] When the top cover 12 closes the base 11, the transmission link is connected; after the top cover 12 is opened, the transmission link is immediately cut off, which can prevent the technical problem of excessive damage to the film caused by the winding mechanism 20 still winding the film after the top cover 12 is opened.

[0078] Moreover, under this transmission structure, the outer bearing 45 mounted on the first transmission gear 41 can radially disperse the weight or torque transmitted downward by the third transmission gear 43 and the second transmission gear 42 to the housing 10, so that the first transmission gear 41 will not be offset and will not affect the transmission of the knob mechanism 30.

[0079] It is contemplated that in other embodiments, one gear or more than two gears may be provided between the driving member 44 and the first transmission gear 41 for transmission. The driving member 44 may also drive the first transmission gear 41 to rotate via a sprocket, pulley, or multi-link mechanism, as long as the torque of the driving member 44 can be stably transmitted to the first transmission gear 41.

[0080] See also Figure 2 and Figure 9 In some embodiments, the film developing device 100 further includes an inner bearing 51. The inner bearing 51 is located between the outer wall of the inner tank 112 and the first transmission gear 41 and is coaxially arranged with the mounting hole 110. A mounting recess is formed in the outer wall of the inner tank 112, and the inner bearing 51 is secured within the recess. The transmission shaft 32 can be inserted into the inner bearing 51 as it moves along the axis of the mounting hole 110.

[0081] Specifically, the inner bearing 51 is fixed to the outer wall of the inner can 112, and the diameter of the middle section of the transmission shaft 32 is loosely matched with the diameter of the inner ring hole of the inner bearing 51. When the transmission shaft 32 is inserted into the tablet core shaft 21, the middle section of the transmission shaft 32 is precisely located within the inner bearing 51, effectively improving the stability of the transmission shaft 32 during rotation, allowing the transmission shaft 32 to drive the tablet core shaft 21 to rotate more smoothly.

[0082] See also Figure 2 and Figure 9 In some embodiments, the film developing device 100 further includes a waterproof ring 52. The waterproof ring 52 is disposed in the mounting position of the inner tank 112 and is located between the inner bearing 51 and the outer wall of the inner tank 112 to prevent the liquid in the inner tank 112 from flowing out.

[0083] Specifically, the waterproof ring 52 is made of rubber or silicone, and is located between the mounting hole 110 of the inner tank 112 and the inner bearing 51. When the transmission shaft 32 passes through the inner bearing 51 and the waterproof ring 52 and is connected to the core shaft 21, the waterproof ring 52 can just seal the gap between the through hole on the inner tank 112 and the transmission shaft 32 to prevent the medicine in the inner tank 112 from overflowing from there.

[0084] See also Figure 2 and Figure 9 In some embodiments, the film developing device 100 further includes a collar 50. The collar 50 is fixed within the mounting position of the inner tank 112 and abuts against the outer wall of the inner tank 112. The collar 50 has a through hole formed therein, and an inner bearing 51 and a waterproof ring 52 are fixed within the through hole of the collar 50.

[0085] Specifically, the collar 50 is a metal ring secured within a recessed mounting recess on the outer wall of the inner tank 112. One end of the collar 50 abuts the outer wall of the inner tank 112, while the other end maintains a small gap with the first transmission gear 41. The collar 50 has stepped through-holes for mounting an inner bearing 51 and a waterproof ring 52 of varying inner diameters. The collar 50 secures the inner bearing 51 and waterproof ring 52, effectively enhancing the structural strength of the structure and preventing damage to the inner tank 112.

[0086] Of course, in some other embodiments, the inner bearing 51 and the waterproof ring 52 may also be directly fixed to the mounting hole 110 on the outer wall of the inner tank 112 .

[0087] In summary, this embodiment provides a film developing device 100, which includes a housing 10, a winding mechanism 20 disposed within the housing 10, a knob mechanism 30 that drives the winding mechanism 20 for rotation, and a drive mechanism 40 that drives the knob mechanism 30 for rotation. A first transmission gear 41 of the drive mechanism 40 is sleeved with an external bearing 45. The first transmission gear 41 is rotationally connected to a mounting hole 110 in the housing 10 via the external bearing 45 to limit the wobble of the first transmission gear 41. This allows the first transmission gear 41 to effectively disperse pressure radially when transmitting to the knob 31, preventing wobble caused by factors such as torque transmitted by the driver 44 and gravity. This effectively ensures stable rotation of the first transmission gear 41, reduces friction between the first rotating gear and the housing 10 during rotation, and makes the transmission shaft 32 more stable during movement. This reduces film damage or uneven development caused by unstable rotation, thereby improving film development quality.

[0088] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A film developing device, characterized in that: include: The housing has a receiving chamber inside for receiving the flushing liquid; the housing is provided with a mounting hole communicating with the receiving chamber; a winding mechanism rotatably disposed in the accommodating chamber and used for winding the developed film; The knob mechanism includes a transmission shaft and a knob, wherein the knob is fixed to one end of the transmission shaft, and the end of the transmission shaft away from the knob is detachably connected to the winding mechanism; the end of the transmission shaft is fixed to the winding mechanism, so that rotating the knob can drive the winding mechanism to rotate; The driving mechanism includes an outer bearing arranged in the mounting hole, a first transmission gear arranged inside the outer bearing, and a driving member arranged inside the housing and transmission-connected to the first transmission gear; the first transmission gear is coaxially arranged with the transmission shaft and rotationally connected to the housing through the outer bearing; the first transmission gear is transmission-connected to the knob mechanism, so that the driving member can drive the first transmission gear to rotate, thereby driving the knob mechanism to rotate.

2. The film developing device according to claim 1, characterized in that: The first transmission gear includes a tooth body and a fixing ring connected to one side surface of the tooth body, and the fixing ring is arranged toward the knob; a through hole for the transmission shaft to pass through is provided in the tooth body, and the fixing ring is sleeved in the outer bearing, and the end of the fixing ring away from the tooth body is transmission-connected to the knob mechanism.

3. The film developing device according to claim 2, characterized in that: A slot is provided on the edge of one end of the fixing ring away from the tooth body, and a boss corresponding to the slot is provided on the knob; the boss is snapped into the slot, so that the first transmission gear is connected to the knob mechanism in transmission.

4. The film developing device according to claim 1, wherein: The driving mechanism includes a second transmission gear rotatably arranged on the housing and a third transmission gear fixed on the driving member, and the outer periphery of the second transmission gear is engaged with the first transmission gear and the third transmission gear; the driving member drives the third transmission gear to rotate, and the second transmission gear follows the third transmission gear to drive the first transmission gear to rotate.

5. The film developing device according to claim 4, characterized in that: The housing includes a base and a top cover; the base includes an outer shell and an inner tank disposed within the outer shell, the inner tank and the outer shell being spaced apart from each other; the inner tank is open at the top and hollow inside to form the accommodating chamber, and the top of the base is provided with an opening connecting the accommodating chamber with the external environment; the top cover is detachably connected to the opening of the base for opening and closing the opening; The housing further comprises a gear carrier plate, which is located in the space between the outer shell and the inner tank and is fixed to the inner wall of the outer shell; the outer bearing is fixed in the gear carrier plate; and the second transmission gear is rotatably connected to the gear carrier plate.

6. The film developing device according to claim 5, characterized in that: The film developing device also includes an inner bearing, which is located in the gap between the inner tank and the outer shell; the outer wall of the inner tank is recessed with a mounting position, the inner bearing is fixed in the mounting position and is arranged coaxially with the mounting hole; the transmission shaft can pass through the inner bearing and be connected to the winding mechanism.

7. The film developing device according to claim 6, characterized in that: The film developing device also includes a waterproof ring, which is arranged in the installation position of the inner tank. The waterproof ring is located between the inner bearing and the outer side wall of the inner tank, and is coaxially arranged with the inner bearing to prevent the liquid medicine in the inner tank from flowing out.

8. The film developing device according to claim 7, characterized in that: The film developing device also includes a collar; the collar is fixed in the mounting position of the inner tank and abuts against the outer wall of the inner tank; a through hole is provided in the collar, and the inner bearing and the waterproof ring are fixed in the through hole of the collar.

9. The film developing device according to claim 1, wherein: The winding mechanism includes a core shaft and core wheels arranged at both ends of the core shaft; a connecting hole is provided at one end of the core shaft, the connecting hole faces the mounting hole on the shell and is coaxial with the mounting hole; the transmission shaft can move along the axis of the mounting hole to be inserted into the connecting hole, so that the transmission shaft can drive the core shaft to rotate.

10. The film developing device according to claim 9, characterized in that: A card plate is provided in the accommodation chamber of the shell; the card plate extends in the vertical direction and is spaced apart from the inner wall of the accommodation chamber; a limiting groove with an open top is provided on the card plate; the core shaft is rotatably accommodated in the limiting groove, and the core wheel is accommodated between the card plate and the inner wall of the accommodation chamber.

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