Film flushing device

Abstract

The utility model provides a film flushing device. The film flushing device comprises a shell, an upper cover and a locking assembly. The interior of the shell is hollow to form a containing cavity, and an opening communicated with the containing cavity is formed in the top of the shell. The upper cover detachably covers the top end of the accommodating cavity so as to open and close the opening; the locking assembly comprises a sliding piece and a first elastic piece, the sliding piece is movably arranged on the top face of the upper cover, one end of the first elastic piece is connected with the sliding piece, and the other end of the first elastic piece is connected with the upper cover. Wherein the sliding part is driven by external force to move towards the direction close to the first end, and the sliding part is separated from the shell, so that the upper cover can be taken down from the shell; when the external force is relieved, the first elastic piece can apply elastic force to the sliding piece so that the sliding piece can move in the direction away from the first end, the sliding piece can abut against the shell, and the upper cover can be fixed to the shell. According to the utility model, the technical problem that the operation is inconvenient when the upper cover is taken down from the shell can be solved, and the user experience is greatly improved.

Description

Technical Field

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

[0002] In recent years, with the pursuit of vintage and unique image textures by photography enthusiasts, film cameras have experienced a revival. Film photography has a unique graininess and color reproduction that is difficult to replicate with digital photography.

[0003] With the revival of film cameras, the demand for film developing devices that are convenient for home use and portability has also increased. Such film developing devices enable photography enthusiasts to develop films at home without the need for a professional darkroom and large automatic developing equipment, providing more convenience and privacy, and also increasing the fun of photography.

[0004] Among them, the film developing device includes a housing and an upper cover. An open-topped cavity is formed inside the housing, and the upper cover covers the top of the cavity to keep the cavity light-tight, facilitating the development of the film inside the cavity. When the upper cover needs to be removed, it is usually necessary to pinch the two side edges of the upper cover with the thumb and forefinger to remove the cover, which is difficult to operate and not conducive to operation. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problem of inconvenient operation when removing the upper cover from the housing.

[0006] To solve the above technical problem, the utility model provides a film developing device, including:

[0007] A housing, the interior of which is hollow to form a cavity, and the top of the housing is provided with an opening communicating with the cavity, and the cavity is used for accommodating the film to be developed;

[0008] An upper cover, detachably covering the top of the cavity to open and close the opening, the upper cover having a first end and a second end opposite to each other in the horizontal direction, the second end being arranged outside the cavity, and the first end being configured to limit movement in a direction away from the second end;

[0009] A locking assembly, including a sliding member and a first elastic member, the sliding member is movably arranged on the top surface of the upper cover and can reciprocate in the direction from the first end to the second end, one end of the first elastic member is connected to the sliding member, and the other end of the first elastic member is connected to the upper cover;

[0010] Wherein, an external force drives the sliding member to move towards the direction close to the first end, and the sliding member is disengaged from the housing, so that the upper cover can be removed from the housing; when the external force is removed, the first elastic member can apply an elastic force to the sliding member to move it in the direction away from the first end, so as to press the sliding member against the housing and fix the upper cover on the housing.

[0011] In an exemplary embodiment of the present disclosure, the sliding member includes a slider and a moving plate. The slider is movably disposed on the top surface of the second end of the upper cover, the moving plate is disposed on the bottom side of the upper cover, the moving plate moves synchronously with the slider, the slider can drive the moving plate to reciprocate in the direction from the first end to the second end, one end of the first elastic member is connected to the moving plate, and the other end of the first elastic member is connected to the bottom of the upper cover;

[0012] Wherein, an external force drives the slider to move towards the direction close to the first end, so as to drive the moving plate to move towards the direction close to the first end, and the moving plate is disengaged from the housing; when the external force is removed, the first elastic member applies an elastic force to the moving plate to move it in the direction away from the first end, so as to press the moving plate against the housing.

[0013] In an exemplary embodiment of the present disclosure, a through first moving hole is formed in the top surface of the second end of the upper cover. A connecting column is provided at the bottom of the slider. The connecting column extends from the first moving hole to the bottom side of the upper cover and is fixedly connected to the moving plate. The connecting column can reciprocate in the first moving hole in the direction from the first end to the second end.

[0014] In an exemplary embodiment of the present disclosure, a through second moving hole is formed in the moving plate or the upper cover. The moving plate and the upper cover are connected by a guiding column. The guiding column is movably disposed in the second moving hole. The guiding column can reciprocate in the second moving hole in the direction from the first end to the second end.

[0015] In an exemplary embodiment of the present disclosure, a fixing plate opposite to the moving plate is connected to the bottom of the upper cover. The fixing plate is closer to the first end relative to the moving plate. One end of the first elastic member is connected to the fixing plate, and the other end of the first elastic member is connected to the moving plate.

[0016] In an exemplary embodiment of the present disclosure, two mounting seats are provided on the moving plate at intervals. The two mounting seats are respectively located on both sides of the connecting column. The mounting seat is provided with a receiving cavity in the direction from the first end to the second end. The receiving cavity is open towards the direction of the first end;

[0017] The first elastic member is a spring. Two first elastic members are provided and respectively accommodated in two receiving cavities. One end of the first elastic member extends out of the receiving cavity and is connected to the fixing plate. When an external force drives the slider to move toward the direction close to the first end, the first elastic member is elastically compressed. When the external force is released, the first elastic member is elastically extended.

[0018] In an exemplary embodiment of the present disclosure, the top surface of the second end of the upper cover is recessed inward to form a groove, the slider is accommodated in the groove, the end surface of the second end of the upper cover is provided with a fracture connected to the groove, and the first movable hole is opened on the bottom of the groove.

[0019] In an exemplary embodiment of the present disclosure, the film developing device further includes a second elastic member, which is disposed between the bottom of the upper cover and the top of the shell. When the sliding member is pressed against the shell, the second elastic member is in a compressed state. The second elastic member can lift the upper cover outward when the sliding member is out of contact with the shell.

[0020] In an exemplary embodiment of the present disclosure, the second elastic member is a spring structure, and the film developing device further includes a snap-in seat, which is arranged at the bottom of the upper cover. One end of the spring structure is snap-in connected to the snap-in seat, and the other end of the spring structure is a movable end, which is pressed against the top of the shell when the sliding member is pressed against the shell.

[0021] In an exemplary embodiment of the present disclosure, the second elastic member is disposed between the first end and the second end, and is relatively close to the second end.

[0022] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0023] In the present application, a locking assembly is provided, which includes a first elastic member and a sliding member. The elastic force of the first elastic member is used to press the sliding member against the shell to tightly install the upper cover and the shell. When the upper cover needs to be removed, the sliding member is manually moved to overcome the elastic force of the first elastic member and separate from the shell, thereby loosening the upper cover and the shell. The upper cover can be removed from the shell with the sliding member as the fulcrum, which greatly improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of a film developing device in some embodiments.

[0025] Figure 2 Schematic diagram of the structure after the shell and the upper cover are separated in some embodiments.

[0026] Figure 3It is a schematic structural diagram of a housing in some embodiments.

[0027] Figure 4 It is a cross-sectional view of a film developing device in some embodiments.

[0028] Figure 5 It is a partial assembly schematic diagram of an upper cover and a housing in some embodiments.

[0029] Figure 6 It is an exploded view of a sliding member in some embodiments.

[0030] Figure 7 It is a schematic structure of an upper cover in some embodiments Figure 1 。

[0031] Figure 8 It is a schematic structure of an upper cover in some embodiments Figure 2 。

[0032] Figure 9 It is a partial schematic structural diagram of an upper cover in some embodiments.

[0033] Figure 10 It is a schematic structural diagram of a shrapnel in some embodiments.

[0034] The description of the reference numerals in the drawings is as follows:

[0035] Housing 1, housing body 11, film module 12, cavity 13, first cavity 131, second cavity 132, stop portion 14, recessed position 15, side wall 16, guiding surface 17, upper cover 2, first end 21, second end 22, groove 23, light-shielding fence 24, sliding member 3, slider 31, side projection 311, moving plate 32, fixing hole 321, lug 322, fixing plate 33, connecting column 34, first moving hole 35, second moving hole 36, guiding column 37, screw 38, mounting seat 39, first elastic member 4, second elastic member 5, shrapnel structure 51, first section 511, second section 512, clamping seat 52, bottom plate 521, first side plate 522, second side plate 523. Detailed Description of the Embodiments

[0036] Typical embodiments embodying 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 can have various variations in different embodiments, all of which do not depart from the scope of the present invention, and the descriptions and illustrations therein are for illustrative purposes in nature and not intended to limit the present invention.

[0037] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or positional relationship (such as up, down, left, right, front, and back, etc.) is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0039] See Figures 1 to 3 , an embodiment of the present application provides a film developing device for developing a film, which is suitable for household use and easy to carry, and includes a housing 1, an upper cover 2 and a locking assembly.

[0040] Among them, the housing 1 is the main structure of the film developing device, and the inside of the housing 1 is hollow to form a cavity 13. The cavity 13 is used to accommodate the film to be developed, and by introducing a developing solution into the cavity 13, the film can be developed.

[0041] In some embodiments, the top of the housing 1 is provided with an open mouth communicating with the cavity 13, through which the film can be put into the cavity 13 and the developing solution can be added into the cavity 13.

[0042] In some embodiments, the upper cover 2 is detachably covered on the top end of the cavity 13 to open and close the open mouth. When the upper cover 2 is covered on the open mouth, the upper cover 2 can seal the cavity 13 to cover external light and prevent external light from entering the cavity 13 to ensure that the brightness level inside the cavity 13 meets the environmental conditions for film development. It can be understood that to ensure no light leakage, the upper cover 2 should completely cover the open mouth of the cavity 13.

[0043] In some embodiments, the upper cover 2 has a first end 21 and a second end 22 that are opposite to each other in the horizontal direction. The first end 21 and the second end 22 can be respectively the two ends in the length direction of the upper cover 2 or the two ends in the width direction of the upper cover 2. In this embodiment, the cross-section of the housing 1 is rectangular, and the upper cover 2 is a rectangular plate.

[0044] In some embodiments, at least a partial area at a position near one end in the length direction of the top surface of the housing 1 forms an inclined diversion surface 17.

[0045] When adding the liquid medicine, the liquid medicine can be added onto the diversion surface 17, and the liquid medicine smoothly flows into the container under the guidance of the inclined diversion surface 17.

[0046] In some embodiments, the first end 21 of the upper cover 2 can be arranged corresponding to the diversion surface 17. There is a gap between the bottom surface of the first end 21 of the upper cover 2 and the diversion surface 17 to form a channel connecting the cavity 13 and the external environment, and the channel allows the liquid medicine to enter the cavity 13.

[0047] In some embodiments, the first end 21 of the upper cover 2 is configured to be restricted from moving in the direction away from the second end 22, so that the first end 21 and the housing 1 are relatively fixed in position. It can partially extend into the cavity and abut against the inner wall of the cavity 13 to restrict the first end of the upper cover 2 from moving in the direction away from the second end 22, and at the same time prevent external light from entering the cavity 13. It can be understood that the end of the first end 21 of the upper cover 2 is arranged outside the cavity 13, and a light-shielding fence 24 extending in the direction towards the bottom of the cavity 13 is provided at the bottom of the first end 21 of the upper cover 2. The light-shielding fence 24 abuts against the top of the inner wall of the cavity 13, so as to prevent light from entering the cavity 13 through the light-shielding fence 24 when one end of the upper cover 2 is snapped into the cavity 13. Of course, there can also be a certain gap between the light-shielding fence 24 and the inner wall of the cavity, and the first end 21 of the upper cover 2 is restricted from moving in the direction away from the second end 22 through other parts.

[0048] In some embodiments, a guide groove is provided on the side of the light-shielding fence 24 facing the diversion surface 17. The guide groove extends along the direction from the top to the bottom of the housing 1, and the guide groove communicates the diversion surface 17 and the inside of the cavity 13, so that the liquid medicine flows from the diversion surface 17 into the cavity 13 through the guide groove.

[0049] In some embodiments, the second end 22 of the upper cover 2 is arranged outside the cavity 13 to facilitate the installation of the upper cover 2.

[0050] In some embodiments, a side enclosure 16 is provided at the outer edge of the top end of the housing 1. The side enclosure 16 is arranged along the contour of the outer edge of the housing 1, and the side enclosure 16 protrudes from the top end of the housing 1, so that the end face of the top end of the housing 1 is enclosed within the side enclosure 16, and the cavity 13 is within the side enclosure 16. This setting enables the user not to worry about the liquid medicine flowing from the diversion surface 17 to the outside of the housing 1 when adding the liquid medicine, which is more convenient for the user to use. Among them, the side enclosure 16 can be integrally formed with the housing 1, which can simplify the manufacturing process, improve the airtightness, and prevent the liquid medicine from leaking between the side enclosure 16 and the outer edge of the top end of the housing 1.

[0051] In some embodiments, by providing side panels 16, the upper cover 2 can be removably mounted within the side panels 16, thereby utilizing the side panels 16 to provide a certain degree of protection for the upper cover 2. Furthermore, the dimensions between the upper cover 2 and the side panels 16 can be appropriately configured so that the upper cover 2 can be snapped into the side panels 16, facilitating installation and removal of the upper cover 2. Furthermore, because the upper cover 2 is located within the side panels 16, the area between the upper cover 2 and the top of the housing 1 is shielded by the side panels 16. External light cannot directly penetrate between the upper cover 2 and the top of the housing 1, thereby minimizing light from entering the cavity 13, allowing the cavity 13 to remain dark and improving film processing efficiency.

[0052] In some embodiments, the top end of the shell 1 can exert a supporting force on the upper cover 2. The top end face of the shell 1 is recessed toward the bottom end of the shell 1 at one end away from the cavity 13, so as to form a slot with the side panel 16. The inner sidewalls of the side panel 16 form the sidewalls of the slot. The bottom edge of the upper cover 2 is accommodated in the slot, and the upper cover 2 is supported by the bottom of the slot. The second end 22 of the upper cover 2 is accommodated in the slot in the corresponding direction. It is understandable that the bottom side edge of the first end 21 of the upper cover 2 can be clamped in the slot by setting the dimensional relationship between the bottom side edge of the first end of the upper cover 2 and the slot, thereby utilizing the friction between the two to limit the first end 21 of the upper cover 2 from moving in the direction away from the second end 22.

[0053] Continue to see Figures 4 to 7 In some embodiments, the locking assembly includes a sliding member 3 and a first elastic member 4. The sliding member 3 is movably disposed on the top surface of the upper cover 2 and is capable of reciprocating in a direction from a first end 21 to a second end 22. One end of the first elastic member 4 is connected to the sliding member 3, and the other end of the first elastic member 4 is connected to the upper cover 2. The upper cover 2 and the sliding member 3 are elastically connected, and the movement of the sliding member 3 is affected by the first elastic member 4.

[0054] In this embodiment, external force drives the sliding member 3 to move toward the first end 21, and the sliding member 3 is out of contact with the shell 1, so that the user can use the sliding member 3 as a fulcrum to lift the second end 22 of the upper cover 2 upward, thereby making it easier for the user to remove the upper cover 2.

[0055] When the external force is released, the first elastic member 4 can exert an elastic force on the sliding member 3 to move it in the direction away from the first end 21, so as to press the sliding member 3 against the shell 1. Since the first end 21 of the upper cover 2 abuts against the inner wall of the cavity 13, the upper cover 2 is fixed to the shell 1.

[0056] It is understood that the external force can be a force applied by the user to the sliding member 3. When the user needs to remove the upper cover 2, the user applies a force to the sliding member 3 to move it toward the first end 21, thereby driving the sliding member 3 to overcome the elastic force of the first elastic member 4 and move toward the first end 21, causing the sliding member 3 to break contact with the housing 1. This reduces the frictional resistance between the second end 22 of the upper cover 2 and the inner wall of the cavity 13, allowing the user to easily remove the upper cover 2 upward using the sliding member 3 as a fulcrum. To secure the upper cover 2, the user places the upper cover 2 on the housing 1 and then releases the sliding member 3. The elastic force of the first elastic member 4 causes the sliding member 3 to press against the housing 1, generating strong frictional resistance between the second end 22 and the inner wall of the cavity 13, and firmly locking the upper cover 2 into the cavity 13.

[0057] In some embodiments, the sliding member 3 may include a slider 31 and a movable plate 32. The slider 31 is movably disposed on the top surface of the second end 22 of the upper cover 2 and is used by the user to operate the sliding member 3. To facilitate user operation of the slider 31, the top portion of the slider 31 is recessed inward to form a handle groove, which provides a user's finger with a firm grip to facilitate control of the slider 31's movement.

[0058] In some embodiments, the movable plate 32 is disposed on the bottom side of the upper cover 2 and is not exposed from the housing 1. The movable plate 32 moves synchronously with the slider 31. The slider 31 can drive the movable plate 32 to move back and forth in the direction from the first end 21 to the second end 22, so that when the user operates the slider 31, the movable plate 32 moves with the slider 31.

[0059] Among them, one end of the first elastic member 4 is connected to the movable plate 32, and the other end of the first elastic member 4 is connected to the bottom of the upper cover 2, so that the first elastic member 4 is also arranged on the bottom side of the upper cover 2 and is not exposed to the shell 1. Only the slider 31 of the entire locking assembly is exposed to the shell 1, which improves the aesthetics of the film developing device and makes its structure more compact.

[0060] When removing the upper cover 2, the operator controls the slider 31 so that an external force drives the slider 31 to move toward the first end 21, thereby driving the movable plate 32 to move toward the first end 21, causing the movable plate 32 to break contact with the housing 1, and the upper cover 2 can be easily removed from the housing 1. When installing the upper cover 2, the user releases the slider 31, the external force is removed, and the first elastic member 4 applies an elastic force to the movable plate 32, causing it to move away from the first end 21, thereby pressing the movable plate 32 against the housing 1. It is understandable that when the movable plate 32 is disposed on the bottom side of the upper cover 2, it can extend into the cavity 13, thereby pressing against the top position of the inner wall of the cavity 13.

[0061] In some embodiments, stoppers 14 may be provided on both sides of one end of the cavity 13 corresponding to the second end 22 of the upper cover 2. Correspondingly, lugs 322 may be provided on opposite sides of the moving plate 32, and the two lugs 322 respectively correspond to the two stoppers 14. After the upper cover 2 is installed in place, the lugs 322 abut against the stoppers 14, so that the moving plate 32 is pressed tightly against the housing 1.

[0062] In some embodiments, a through first moving hole 35 is formed in the top surface of the second end 22 of the upper cover 2. A connecting column 34 is provided at the bottom of the slider 31. The connecting column 34 extends from the first moving hole 35 to the bottom side of the upper cover 2 and is fixedly connected to the moving plate 32. Thus, the upper cover 2 and the moving plate 32 are connected by the connecting column 34, enabling the two to move synchronously. Among them, the first moving hole 35 may be a long strip-shaped hole, and its length direction is parallel to the direction from the first end 21 to the second end 22.

[0063] In some embodiments, the connecting column 34 may be integrally formed with the bottom of the slider 31, or may be fixedly connected to the bottom of the slider 31 by means such as welding. Correspondingly, a fixing hole 321 is formed in the moving plate 32, and one end of the connecting column 34 is fixed in the fixing hole 321. The two may be in interference fit to clamp the connecting column 34 in the fixing hole 321, or they may also be fastened and connected by screwing.

[0064] In some embodiments, the fixing hole 321 may be formed at the central position of the moving plate 32, making the force on the moving plate 32 more uniform.

[0065] In some embodiments, the top surface of the second end 22 of the upper cover 2 is recessed inward to form a groove 23. The slider 31 is accommodated in the groove 23 to hide the slider 31 through the groove 23 and prevent it from protruding from the top surface of the upper cover 2. A break is provided on the end surface of the second end 22 of the upper cover 2 and communicates with the groove 23. Through the break, it is convenient for the user to apply force to the slider 31, making the operation more convenient. Among them, the break should correspond to the groove width of the groove 23.

[0066] In some embodiments, side protrusions 311 are provided on both side walls of the slider 31. The side protrusions 311 extend along the direction from the first end 21 to the second end 22, and corresponding to the side protrusions 311 on the groove side wall of the groove 23, there are sliding grooves for the side protrusions 311 to be inserted into. Thus, the slider 31 is limited by the form of the side protrusions 311 being inserted into the sliding grooves, so that it is firmly installed in the groove 23 and can move along the direction from the first end 21 to the second end 22.

[0067] In some embodiments, the first moving hole 35 is provided at the bottom of the groove 23, facilitating the movement of the slider 31 in the groove 23. It can be understood that the length of the groove 23 should be greater than the length of the slider 31 in the direction from the first end 21 to the second end 22, so that the slider 31 has space to move in the groove 23.

[0068] In some embodiments, the slider 31 and the moving plate 32 can also be magnetically connected to achieve synchronous movement of the two. For example, magnetic members are provided at the bottom of the slider 31 and the top of the moving plate 32. The two are respectively located on the top surface and the bottom surface of the upper cover 2 and are magnetically connected by the two magnetic members, so that the slider 31 can drive the moving plate 32 to move synchronously.

[0069] In some embodiments, a through second moving hole 36 is provided on the moving plate 32. The moving plate 32 and the upper cover 2 are connected by a guiding column 37. The guiding column 37 is movably arranged in the second moving hole 36. The guiding column 37 can reciprocally move in the second moving hole 36 along the direction from the first end 21 to the second end 22. Thus, with the upper cover 2 as a reference, the guiding column 37 provides a guiding effect on the movement of the moving plate 32, avoiding deviation of the reciprocating movement of the moving plate 32 and improving the position accuracy of the moving plate 32. Among them, the second moving hole 36 can be a long strip-shaped hole, and its length direction can be parallel to the length direction of the first moving hole 35.

[0070] In some embodiments, two second moving holes 36 can be arranged at intervals, respectively on both sides of the fixing hole 321. Correspondingly, two guiding columns 37 are also provided, corresponding to the second moving holes 36 respectively, thereby further improving the position accuracy of the moving plate 32.

[0071] In some embodiments, one end of the guiding column 37 can be fixed to the bottom of the upper cover 2, and the other end extends into the second moving hole 36. Further, the guiding column 37 can be a stud, which has an internal threaded hole, and a screw 38 can be arranged on the moving plate 32. The head of the screw 38 is located at the bottom side of the second moving hole 36. The main body of the screw 38 passes through the second moving hole 36 and is screwed into the internal threaded hole of the guiding column 37, and the bottom surface of the moving plate 32 is supported on the head of the screw 38, so that the screw 38 can provide support for the moving plate 32, thereby making the moving plate 32 stably installed while the guiding column 37 plays a guiding role.

[0072] In some other embodiments, the above-mentioned second moving hole 36 can be provided on the upper cover 2. One end of the guiding column 37 is fixedly connected to the moving plate 32, and the other end extends into the second moving hole 36, which can also achieve the effect of the moving plate 32 moving along the second moving hole 36. Among them, a screw 38 can be arranged on the upper cover 2. The screw 38 is screwed to the guiding column 37, and the head of the screw 38 is located outside the upper cover 2, and the upper cover 2 provides support for the moving plate 32.

[0073] In some embodiments, a fixing plate 33 opposite to the moving plate 32 is connected to the bottom of the upper cover 2. The fixing plate 33 extends towards the bottom of the accommodating cavity 13. One end of the first elastic member 4 is connected to the fixing plate 33, and the other end of the first elastic member 4 is connected to the moving plate 32, so that the moving plate 32 and the upper cover 2 are elastically connected.

[0074] In this embodiment, the fixed plate 33 is closer to the first end 21 relative to the moving plate 32, and the first elastic member 4 is a spring. When an external force drives the slider 31 to move towards the direction close to the first end 21, the first elastic member 4 is elastically compressed to store energy. When the external force is removed, the first elastic member 4 elastically elongates, and its elastic force acts on the moving plate 32, tightly pressing the moving plate 32 against the stop portion 14 to achieve the fixed installation of the upper cover 2 and the housing 1.

[0075] In other embodiments, the fixed plate 33 can also be closer to the second end 22 relative to the moving plate 32. At this time, the first elastic member 4 can be a tension spring. When an external force drives the slider 31 to move towards the direction close to the first end 21, the first elastic member 4 is stretched to store energy. When the external force is removed, the first elastic member 4 is compressed and shortened, and its elastic force acts on the moving plate 32, pulling the moving plate 32 towards the second end 22 to tightly press it against the stop portion 14.

[0076] In this embodiment, two mounting seats 39 are provided on the moving plate 32 at intervals. The two mounting seats 39 are respectively located on both sides of the connecting column 34. The mounting seat 39 is provided with a receiving cavity 13 along the direction from the first end 21 to the second end 22, and the receiving cavity 13 is open towards the first end 21. There are two first elastic members 4, which are respectively accommodated in the two receiving cavities 13. The first elastic members 4 are installed and limited by the receiving cavities 13, and one end of the first elastic member 4 extends out of the receiving cavity 13 and is connected to the fixed plate 33.

[0077] In some embodiments, the axial direction of the receiving cavity 13 can also intersect with the direction from the first end 21 to the second end 22, so that the axial direction of the first elastic member 4 intersects with the direction from the first end 21 to the second end 22. In this way, the component force of the elastic force of the first elastic member 4 in the direction from the first end 21 to the second end 22 can also press the moving plate 32 tightly against the housing 1.

[0078] Continue to refer to Figures 7 to 10 , in some embodiments, the film developing device further includes a second elastic member 5. The second elastic member 5 is arranged between the bottom of the upper cover 2 and the top of the housing 1, and both ends of the second elastic member 5 can be respectively in contact with the bottom of the upper cover 2 and the top of the housing 1. After the upper cover 2 is installed in place and the sliding member 3 is tightly pressed against the housing 1, the second elastic member � is in a compressed state to store elastic force. When the external force is removed and the sliding member 3 is separated from the housing 1, the second elastic member 5 can rely on its own elastic force to jack up the upper cover 2 outward, assisting in opening the upper cover 2, thereby improving the user experience.

[0079] In some embodiments, the second elastic member 5 is arranged between the first end 21 and the second end 22 and is relatively close to the second end 22. According to the lever principle, the jacking effect of the second elastic member 5 on the upper cover 2 is better, and it is easier for the user to remove the upper cover 2.

[0080] In some embodiments, a recess 15 is provided at the top of the housing 1. After the upper cover 2 is installed in place, a part of the second elastic member 5 is received in the recess 15 to accommodate and limit the second elastic member 5, and the elastic force accumulated by the second elastic member 5 can be reasonably set to avoid the situation that the second end 22 of the upper cover 2 and the cavity 13 cannot be tightly clamped due to excessive accumulated elastic force.

[0081] In some embodiments, there are two second elastic members 5, which are arranged at intervals along the width direction of the upper cover 2. Correspondingly, there are also two recesses 15, which are respectively located on both sides of the housing 1 in the width direction at the top, so as to make the upper cover 2 receive balanced force and avoid one side of the upper cover 2 tilting up when it is lifted.

[0082] In some embodiments, the second elastic member 5 is a shrapnel structure 51, and the film developing device further includes a clamping seat 52. The clamping seat 52 is arranged at the bottom of the upper cover 2, and one end of the shrapnel structure 51 is clamped on the clamping seat 52. One end of the shrapnel structure 51 is fixed by the clamping seat 52, so that the shrapnel structure 51 can move with the upper cover 2. Correspondingly, the other end of the shrapnel structure 51 is a movable end, and when the sliding member 3 abuts against the housing 1, it abuts against the top of the housing 1. Specifically, the movable end of the shrapnel structure 51 abuts against the recess 15.

[0083] In some embodiments, the second elastic member 5 can also be a compression spring, which can also provide elastic force to lift the upper cover 2 when the sliding member 3 is driven to move by an external force.

[0084] In some embodiments, the clamping seat 52 includes a bottom plate 521 and first side plates 522 provided at the edges of the opposite ends of the bottom plate 521. The bottom plate 521 and the two first side plates 522 enclose an open slot, and the slot opening of the open slot faces the bottom surface of the upper cover 2. The two first side plates 522 are arranged at intervals along the direction from the first end 21 to the second end 22. Among them, an opening is provided on the bottom plate 521. A second side plate 523 can also be connected between one side of the bottom plate 521 and the two first side plates 522, so that one side of the open slot is closed and the other side is open. When installing the shrapnel 51, the shrapnel structure 51 is placed into the open slot from the open side of the open slot and its position is limited by the second side plate 523 to prevent it from sliding out of the open slot.

[0085] In some embodiments, the spring structure 51 includes a first section 511 and a second section 512. The first section 511 extends from the first end 21 to the second end 22. The second section 512 is connected to one end of the first section 511 and is inclined toward the bottom of the cavity 13, allowing the second section 512 to rotate relative to the first section 511. When the spring structure 51 is installed, the first section 511 is engaged with the opening slot, and the two ends of the first section 511 respectively abut the two first side plates 522. The second section 512 extends from the opening in the bottom plate 521, and the end of the second section 512 facing away from the first section 511 serves as the movable end of the spring structure 51. After the upper cover 2 is installed, the second section 512 is pressed against the top of the housing 1 toward the first section 511, causing the second section 512 to accumulate elastic force. When the upper cover 2 is removed, the accumulated elastic force of the second section 512 acts on the top of the housing 1, lifting the upper cover 2.

[0086] In some embodiments, the shell 1 includes a shell body 11 and a film module 12. A step portion is provided on one side of the shell body 11 in the longitudinal direction, and the film module 12 is provided on the step portion and is detachably connected to the shell body 11. The cavity 13 includes a first cavity 131 provided on the shell body 11 and a second cavity 132 provided on the film module 12. The first cavity 131 is used to accommodate the medical solution, and the second cavity 132 is used to accommodate the film. The film is wound in a roll in the second cavity 132, and one end of the film is connected to the core assembly provided in the first cavity 131. The core assembly can rotate in the first cavity 131. When the film is developed, the core assembly rotates, thereby driving the film to gradually wind onto the core assembly. As the film rotates continuously, the film reacts fully with the medical solution in the first cavity 131.

[0087] In some embodiments, the first cavity 131 and the second cavity 132 together form the receiving cavity 13. When the upper cover 2 is placed on the top of the receiving cavity 13, it covers both the first cavity 131 and the second cavity 132. The stopper 14 can be disposed on the top of the second cavity 132, and the sliding member 3 can be pressed against the second cavity 132, thereby securing the upper cover 2 and the housing 1.

[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, Comprising: A housing, which is hollow inside to form a cavity. An opening communicating with the cavity is provided at the top of the housing, and the cavity is used for accommodating the film to be developed. An upper cover, detachably covering the top end of the cavity to open and close the opening. The upper cover has a first end and a second end opposite to each other in the horizontal direction. The second end is arranged outside the cavity, and the first end is configured to restrict movement in the direction away from the second end. A locking assembly, including a sliding member and a first elastic member. The sliding member is movably arranged on the top surface of the upper cover and can reciprocate in the direction from the first end to the second end. One end of the first elastic member is connected to the sliding member, and the other end of the first elastic member is connected to the upper cover. Wherein, an external force drives the sliding member to move towards the direction close to the first end, and the sliding member is separated from contact with the housing, so that the upper cover can be removed from the housing; when the external force is released, the first elastic member can apply an elastic force to the sliding member to make it move in the direction away from the first end, so as to press the sliding member against the housing and fix the upper cover on the housing.

2. The film developing device according to claim 1, characterized in that The sliding member includes a slider and a moving plate. The slider is movably arranged on the top surface of the second end of the upper cover. The moving plate is arranged on the bottom side of the upper cover. The moving plate moves synchronously with the slider. The slider can drive the moving plate to reciprocate in the direction from the first end to the second end. One end of the first elastic member is connected to the moving plate, and the other end of the first elastic member is connected to the bottom of the upper cover. Wherein, an external force drives the slider to move towards the direction close to the first end, so as to drive the moving plate to move towards the direction close to the first end, and make the moving plate separated from contact with the housing; when the external force is released, the first elastic member applies an elastic force to the moving plate to make it move in the direction away from the first end, so as to press the moving plate against the housing.

3. The film developing device according to claim 2, characterized in that A through first moving hole is provided on the top surface of the second end of the upper cover. A connecting column is provided at the bottom of the slider. The connecting column extends from the first moving hole to the bottom side of the upper cover and is fixedly connected to the moving plate. The connecting column can reciprocate in the first moving hole in the direction from the first end to the second end.

4. The film developing device according to claim 3, characterized in that A through second moving hole is provided on the moving plate or the upper cover. The moving plate and the upper cover are connected by a guiding column. The guiding column is movably arranged in the second moving hole. The guiding column can reciprocate in the second moving hole in the direction from the first end to the second end.

5. The film developing device according to claim 3, characterized in that The bottom of the upper cover is connected to a fixed plate opposite to the moving plate. The fixed plate is closer to the first end relative to the moving plate. One end of the first elastic member is connected to the fixed plate, and the other end of the first elastic member is connected to the moving plate.

6. The film developing device according to claim 5, wherein Two mounting seats are arranged on the moving plate at intervals, and the two mounting seats are respectively located on both sides of the connecting column. The mounting seat is provided with a receiving cavity along the direction from the first end to the second end, and the receiving cavity is open towards the direction of the first end; The first elastic member is a spring, and there are two first elastic members which are respectively received in the two receiving cavities. One end of the first elastic member extends out of the receiving cavity and is connected to the fixed plate. When an external force drives the slider to move towards the direction close to the first end, the first elastic member is elastically compressed, and when the external force is removed, the first elastic member elastically elongates.

7. The film developing device according to claim 3, wherein The top surface of the second end of the upper cover is recessed inward to form a groove. The slider is received in the groove. The end surface of the second end of the upper cover is provided with a break communicated with the groove, and the first moving hole is opened on the bottom of the groove.

8. The film developing apparatus according to claim 1, wherein The film developing device further includes a second elastic member, and the second elastic member is arranged between the bottom of the upper cover and the top of the housing. When the sliding member abuts against the housing, the second elastic member is in a compressed state, and the second elastic member can jack up the upper cover outward when the sliding member is separated from contact with the housing.

9. The film developing apparatus according to claim 8, characterized in that, The second elastic member is a shrapnel structure. The film developing device further includes a clamping seat, and the clamping seat is arranged on the bottom of the upper cover. One end of the shrapnel structure is clamped on the clamping seat, and the other end of the shrapnel structure is a movable end and abuts against the top of the housing when the sliding member abuts against the housing.

10. The film developing apparatus according to claim 8, wherein The second elastic member is arranged between the first end and the second end and is relatively close to the second end.

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