Circular box gear and rack slow opening constant quantity taking structure

Abstract

The utility model discloses a gear and rack slow opening constant -quantity taking structure of circular box, including circular box body, the top of circular box body is assembled with the sealing cover, the rear side wall of sealing cover is assembled with slow opening subassembly, the rear side wall center of sealing cover installs the drive board, the center of drive board is equipped with the drive mouth, slow opening subassembly includes the bearing seat of installation in drive mouth, the bearing seat is installed with the drive pivot, the bottom of drive pivot is installed with the gear, the utility model discloses a slow opening subassembly is established to the rear side wall of sealing cover, when rotating drive pivot, the carousel of drive pivot top end drives drive pivot rotation, and the gear of drive pivot bottom end rotates along with. Because the gear is engaged with the rack, and the rotation of gear drives the rack to move along the slide, and then makes the slider connected on the rack and the circular top cover connected with the slider slowly move.

Description

Technical Field

[0001] This utility model relates to the field of object retrieval structure technology, specifically a circular box gear rack slow-opening quantitative object retrieval structure. Background Technology

[0002] Existing storage containers present numerous problems in various storage and retrieval scenarios. Firstly, the traditional combination of a circular box and a sealed lid often involves a simple and crude opening method, such as the common direct-opening type. At the moment of opening, the contents may be affected by sudden pressure changes or external impacts, especially for fragile, easily scattered, or environmentally sensitive items. This method fails to meet the requirements for precise control and protection. Secondly, most containers lack effective quantitative dispensing mechanisms. People typically rely on experience to estimate the amount needed, which can easily lead to over- or under-dispensing in scenarios requiring high accuracy, such as adding food seasonings or dispensing medicine. This can result in waste, affect the effectiveness of the product, and even threaten the user's health and safety in medicine use. Furthermore, some devices with so-called quantitative functions are complex in structure and expensive, making them difficult to widely apply in ordinary daily scenarios. Therefore, developing a circular box structure that can achieve both slow-opening protection and precise quantitative dispensing, while also being simple in structure and cost-effective, is of significant practical importance. Utility Model Content

[0003] The purpose of this invention is to provide a circular box gear rack slow-opening quantitative dispensing structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a circular box gear rack slow-opening quantitative dispensing structure, comprising a circular box body, a sealing cover mounted on the top of the circular box body, and a slow-opening component mounted on the rear side wall of the sealing cover; a drive plate installed at the center of the rear side wall of the sealing cover, and a drive port opened at the center of the drive plate; the slow-opening component includes a bearing seat installed in the drive port, a drive shaft installed in the bearing seat, and a gear installed at the bottom end of the drive shaft; a slide rail is laterally opened on the rear side wall of the sealing cover, a slider is installed in the slide rail, and a circular top cover is installed inside the slider, with the outer diameter of the circular top cover slightly larger than the diameter of the circular box body; a rack is installed outside the slider, and the rack meshes with the gear.

[0005] As a preferred embodiment of the circular box gear rack slow-opening quantitative material handling structure of this utility model, the bearing seat includes a shaft cylinder a and a shaft cylinder b installed in the drive port, and the shaft cylinder a and shaft cylinder b are arranged opposite to each other. The inner walls of the shaft cylinder a and shaft cylinder b are evenly and equidistantly provided with rotating cavities along their axis. The rotating cavities are equipped with balls, and the balls are fitted in close contact with the drive shaft.

[0006] As a preferred embodiment of the circular box gear rack slow-opening quantitative material handling structure of this utility model, connecting plates are installed on both side walls of the shaft cylinder a and shaft cylinder b, and threaded holes are opened on the side walls of the connecting plates, with bolts threaded into the threaded holes. Fixing plates are installed on the rear side walls of the shaft cylinder a and shaft cylinder b.

[0007] The rigid tube b of this utility model has an external thread on its outer wall, the outer walls of the shaft cylinder a and shaft cylinder b have oil injection holes that are connected to the rotating cavity, and the side wall of the fixing plate has a fixing hole.

[0008] In a preferred embodiment of the circular box gear rack slow-opening quantitative dispensing structure of this utility model, a turntable is installed at the top of the drive shaft, and an auxiliary handle is installed at the top edge of the turntable.

[0009] As a preferred embodiment of the circular box gear rack slow-opening quantitative dispensing structure of this utility model, the front side wall of the sealing cover is provided with a dispensing port, and a sealing plate is embedded in the dispensing port.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the setting of the circular box gear rack slow-opening quantitative dispensing structure is reasonable in structural design; This invention features a slow-opening component on the rear side wall of the sealing cover. When the drive shaft is rotated, the turntable at the top of the drive shaft drives the shaft to rotate, and the gear at the bottom of the drive shaft rotates accordingly. Since the gear meshes with the rack, the rotation of the gear causes the rack to move along the slide, thereby causing the slider connected to the rack and the circular top cover connected to the slider to move slowly. This slow-opening method effectively avoids sudden changes in air pressure and external impacts during opening, protecting the items inside the circular box from damage. It is especially suitable for storing fragile, easily scattered, or environmentally sensitive items, such as precision electronic components and powdered medicines. Users can precisely control the movement distance of the rack by controlling the rotation angle of the drive shaft, thereby controlling the degree to which the circular top cover opens. Since the outer diameter of the circular top cover is slightly larger than the diameter of the circular box, the amount of item protruding from the retrieval opening is relatively fixed when the top cover is opened to a certain extent, thus achieving quantitative dispensing. In food seasoning dispensing scenarios, this function helps users accurately control the amount of seasoning added, improving cooking results; in medicine dispensing scenarios, it ensures that patients accurately take the prescribed dosage, guaranteeing medication safety. Attached Figure Description

[0011] Figure 1 This is a frontal three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the rear side of the sprayer. Figure 3This is a schematic diagram of the slow-opening structure of this utility model; Figure 4 This is a schematic diagram of the bearing housing of this utility model.

[0012] In the diagram: 1. Circular box; 2. Sealing cover; 3. Retrieval port; 4. Drive plate; 5. Slow-opening structure; 6. Slide rail; 7. Slider; 8. Rack; 9. Drive port; 10. Drive shaft; 11. Gear; 12. Turntable; 13. Auxiliary throttle; 14. Circular top cover; 15. Bearing seat; 151. Shaft a; 152. Shaft b; 153. Fixing plate; 16. Ball bearing; 17. Connecting plate; 18. Screw hole; 19. Bolt; 20. Oil injection hole; 21. Fixing hole; 22. Rotating cavity. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 This utility model provides a technical solution: In this technical solution, the circular box gear rack slow-opening quantitative dispensing structure includes a circular box body 1, a sealing cover 2 mounted on the top of the circular box body 1, and a slow-opening assembly mounted on the rear side wall of the sealing cover 2; a drive plate 4 is installed at the center of the rear side wall of the sealing cover 2, and a drive port 9 is opened at the center of the drive plate 4; the slow-opening assembly includes a bearing seat 15 installed in the drive port 9, a drive shaft 10 installed in the bearing seat 15, and a gear 11 installed at the bottom end of the drive shaft 10; a slide rail 6 is opened laterally on the rear side wall of the sealing cover 2, a slider 7 is installed in the slide rail 6, and a circular top cover 14 is installed inside the sealing cover 2, with the outer diameter of the circular top cover 14 being slightly larger than the diameter of the circular box body 1; a rack 8 is installed on the outside of the slider 7, and the rack 8 and the gear 11 mesh with each other.

[0015] The round box 1 serves as a storage container, and its material can be chosen from various options, such as plastics (e.g., polypropylene (PP), polyethylene (PE), etc., which have advantages such as low cost and corrosion resistance) and metals (e.g., stainless steel, which has high strength and good sealing performance). The specific choice depends on the characteristics of the stored items. For example, food-grade plastic can be used to store food seasonings, while stainless steel can be used to store corrosive items. Its size depends on the actual usage scenario and storage capacity requirements. Assuming it is used for storing seasonings in a home kitchen, the diameter may be between 5-20 cm, and the height between 3-15 cm.

[0016] The sealing cap 2 is tightly fitted to the top of the circular box 1, achieving a good sealing effect. The sealing cap 2 and the circular box 1 can be assembled using a threaded connection (such as common spice bottles, where opening and closing is achieved by rotating the sealing cap; this provides good sealing performance and effectively prevents items from getting damp or oxidizing) or a snap-fit ​​connection (simple operation, suitable for quick opening and closing scenarios, but the sealing effect is slightly inferior to threaded connections). The material of the sealing cap 2 should also be compatible with the circular box 1 and must possess a certain degree of sealing performance. Auxiliary sealing components such as rubber gaskets and silicone gaskets can be used to enhance the sealing performance.

[0017] The design of mounting a slow-opening component on the rear side wall of the sealing cover 2 lays the foundation for the slow-opening function of the entire device. The position of the slow-opening component has been carefully considered, as it is installed on the rear side wall of the sealing cover 2 for easy operation and does not affect the retrieval of items from the retrieval port 3 on the front side wall of the sealing cover 2.

[0018] The drive plate 4, installed at the center of the rear side wall of the sealing cover 2, serves to support and position key components of the soft-opening assembly. The drive plate 4 can be made of the same or similar material as the sealing cover 2 to ensure the compatibility and stability of the overall structure. Its shape is typically circular or square, with dimensions slightly larger than the drive opening 9 for better fixation to the sealing cover 2. For example, if the sealing cover 2 is a circle with a diameter of 10 cm, the drive plate 4 can be designed as a square with sides of 4 cm.

[0019] A drive port 9 is provided at the center of the drive plate 4. The diameter of the drive port 9 needs to be precisely designed according to the size of the drive shaft 10, and a suitable clearance should be maintained between the two. Generally, the diameter of the drive port 9 is 0.5-1 mm larger than the diameter of the drive shaft 10. This ensures that the drive shaft 10 can rotate freely within it, while preventing excessive wobbling that could affect the performance of the device. For example, if the diameter of the drive shaft 10 is 10 mm, the diameter of the drive port 9 can be designed to be 10.5 mm.

[0020] In some technical solutions, the bearing housing 15 includes a shaft cylinder a151 and a shaft cylinder b152 installed in the drive port 9, and the shaft cylinder a151 and shaft cylinder b152 are arranged opposite to each other. The inner walls of the shaft cylinder a151 and shaft cylinder b152 are evenly spaced along their axis and have rotating cavities 22. The rotating cavities 22 are equipped with balls 16, and the balls 16 are fitted to the drive shaft 10.

[0021] The bearing housing 15 is installed inside the drive port 9 and consists of shaft sleeves a151 and b152 arranged opposite each other. Shaft sleeves a151 and b152 can be made of metal materials, such as aluminum alloy (lightweight and high strength) or steel (high strength, suitable for bearing large loads). Rotating cavities 15 are evenly spaced along the axis on their inner walls. The number of rotating cavities 15 is determined according to actual needs, generally between 6 and 12. The diameter of the rotating cavity 15 needs to be determined based on the size of the ball 16, usually 0.1-0.2 mm larger than the diameter of the ball 16, to ensure that the ball 16 can roll freely within the cavity without excessive wobble. For example, if the diameter of the ball 16 is 5 mm, the diameter of the rotating cavity 15 can be designed to be 5.1 mm.

[0022] The rotating cavity 15 houses ball bearings 16, which are fitted into the drive shaft 10. This structure creates rolling friction, significantly reducing the frictional force during the rotation of the drive shaft 10. The ball bearings 16 are typically made of bearing steel, which possesses high hardness, good wear resistance, and dimensional stability. The diameter of the ball bearings 16 is generally between 3 and 8 millimeters, with the specific size determined based on the overall size and load-bearing capacity of the device. For example, for a small condiment box retrieving device, a ball bearing diameter of 5 millimeters can be used.

[0023] The drive shaft 10 is installed within the bearing housing 15, and its material can be stainless steel or 45# steel, etc. The length of the drive shaft 10 is determined based on the overall structure of the device, ensuring that its bottom end can accommodate the gear 11, and its top end extends sufficiently beyond the sealing cover 2 to accommodate the turntable 12 and auxiliary handle 13. Assuming the thickness of the entire sealing cover 2 and the soft-opening assembly is 3 cm, and the length of the drive shaft 10 extending beyond the top of the sealing cover 2 is 2 cm, then the total length of the drive shaft 10 is likely between 5 and 6 cm. The diameter of the drive shaft 10 needs to be calculated and determined based on the transmitted torque and load-bearing capacity, generally between 6 and 12 mm. For example, for devices carrying lighter items, an 8 mm diameter drive shaft 10 can be selected.

[0024] A slide 6 is laterally formed on the rear side wall of the sealing cover 2. The length and width of the slide 6 are determined according to the moving distance of the circular top cover 14 and the size of the rack 8. Assuming that the circular top cover 14 needs to move a distance of 3 cm, the length of the slide 6 should be slightly greater than 3 cm, such as 3.5 cm. The width of the slide 6 should be 0.5-1 mm larger than the width of the slider 7 to ensure that the slider 7 can slide smoothly within it. The material of the slide 6 can be the same as that of the sealing cover 2, or it can be made of wear-resistant plastic material and embedded in the sealing cover 2.

[0025] A slider 7 is installed inside the slide 6. The slider 7 can be made of plastic (such as polytetrafluoroethylene, which has an extremely low coefficient of friction, allowing the slider to slide more smoothly within the slide) or metal (such as aluminum alloy, which has high strength). The dimensions of the slider 7 must fit tightly with the slide 6, and its length and width are determined according to the dimensions of the slide 6 and the components it connects to. For example, if the width of the slide 6 is 1 cm, the width of the slider 7 can be designed to be 0.95 cm, and the length can be between 2 and 3 cm depending on the connection requirements with the circular top cover 14 and the rack 8.

[0026] The slider 7 is located inside the sealing cover 2 and has a circular top cover 14 installed. The outer diameter of the circular top cover 14 is slightly larger than the diameter of the circular box body 1, generally 1-2 cm larger is suitable. This allows for effective control of the amount of material taken out when the circular top cover 14 moves to open. The material of the circular top cover 14 is compatible with the circular box body 1 and the sealing cover 2, and its thickness is determined according to actual strength requirements, generally between 0.5-1 cm. For example, for a circular box body and sealing cover made of plastic, the thickness of the circular top cover 14 can be designed to be 0.8 cm.

[0027] A rack 8 is mounted on the outside of the slider 7, and the rack 8 meshes with the gear 11. The material of the rack 8 can be the same as or similar to that of the gear 11, such as steel (heat-treated to improve hardness and wear resistance). The length of the rack 8 is determined based on the moving distance of the circular top cover 14. Assuming that the circular top cover 14 needs to move 3 cm and the module of the gear 11 is 1, then the length of the rack 8 should be calculated based on the gear-rack transmission relationship, approximately between 30-35 mm (considering a certain margin). The width of the rack 8 is determined based on the transmitted force and structural stability, generally between 5-10 mm. For example, for devices subjected to smaller forces, a width of 6 mm can be selected for the rack 8.

[0028] In some technical solutions, connecting plates 17 are installed on both side walls of shaft cylinder a151 and shaft cylinder b152. The side walls of the connecting plates 17 are provided with screw holes 18, and bolts 19 are screwed into the screw holes 18. Fixing plates 153 are installed on the rear side walls of shaft cylinder a151 and shaft cylinder b152.

[0029] Connecting plates 17 are installed on both side walls of shaft cylinders a151 and b152. The material of the connecting plates 17 is the same as that of shaft cylinders a151 and b152. The function of the connecting plates 17 is to connect shaft cylinders a151 and b152 together, enhancing the overall stability of the bearing housing 15. The shape of the connecting plates 17 is usually rectangular, and its dimensions are determined according to the diameter of shaft cylinders a151 and b152 and the installation requirements. For example, if the diameter of shaft cylinders a151 and b152 is 1.5 cm, the length of the connecting plate 17 can be designed to be 3 cm and the width to be 1 cm.

[0030] The side wall of the connecting plate 17 has screw holes 18, the diameter and number of which are determined according to the connection requirements. Generally, the diameter of the screw holes 18 is 4-6 mm, and the number is between 2 and 4. For example, for a small bearing housing, two screw holes 18 with a diameter of 4 mm can be provided. Bolts 19 are screwed into the screw holes 18. The bolts 19 are made of metal, such as stainless steel bolts, to ensure the connection is firm and rust-proof. The length of the bolts 19 is determined according to the thickness of the connecting plate 17 and the wall thickness of the shaft sleeves a151 and b152, and must be able to be fully tightened and fixed.

[0031] A fixing plate 153 is installed on the rear side wall of shaft sleeves a151 and b152. The material of the fixing plate 153 is the same as that of shaft sleeves a151 and b152. The function of the fixing plate 153 is to fix the bearing seat 15 to the sealing cover 2. Its shape is usually circular or square, and its size is slightly larger than the outer diameter of shaft sleeves a151 and b152. For example, if the outer diameter of shaft sleeves a151 and b152 is 2 cm, the fixing plate 153 can be designed as a square with a side length of 3 cm. The side wall of the fixing plate 153 has fixing holes 31. The diameter and number of fixing holes 31 are determined according to the installation method and the material of the sealing cover 2. If screws are used to fix it to the plastic sealing cover, the diameter of the fixing holes 31 can be 3-4 mm, and the number can be between 3 and 4.

[0032] In some technical solutions, the outer walls of shaft cylinders a151 and b152 are provided with oil injection holes 20, and the oil injection holes 20 are connected to the rotating cavity 22. The side wall of the fixing plate 153 is provided with fixing holes 31.

[0033] Oil injection holes 20 are provided on the outer walls of shaft cylinders a151 and b152. The diameter of the oil injection holes 20 is generally between 1 and 2 mm, and their positions should correspond to and be connected to the rotating cavities 15. The number of oil injection holes 20 is determined according to the number and distribution of rotating cavities 15, generally one oil injection hole 20 for each rotating cavity 15. Lubricating oil (such as lithium-based grease, which has good high and low temperature performance and water resistance) can be periodically injected into the rotating cavities 15 through the oil injection holes 20, further reducing the friction between the balls 16 and the rotating cavities 15 and extending the service life of the device. When injecting oil, a special oil injection tool, such as a syringe-type oil injector, can be used to slowly inject the lubricating oil into the oil injection holes 20.

[0034] In some technical solutions, a turntable 12 is installed at the top of the drive shaft 10, and an auxiliary throttle 13 is installed at the top edge of the turntable 12.

[0035] A turntable 12 is mounted at the top of the drive shaft 10. The turntable 12 can be made of plastic (such as ABS plastic, which has good processing performance and appearance) or metal (such as aluminum alloy, which is lightweight and strong). The diameter of the turntable 12 is determined according to ergonomics and ease of operation, and is generally between 5 and 10 centimeters. For example, for a device used in a home, the diameter of the turntable 12 can be designed to be 6 centimeters, so that the user can easily hold and rotate the turntable 12.

[0036] An auxiliary handle 13 is installed at the top edge of the turntable 12. The auxiliary handle 13 is made of the same or similar material as the turntable 12, and its shape is usually cylindrical or arc-shaped to facilitate the user's application of force. The length of the auxiliary handle 13 is generally between 2 and 4 cm, and the diameter is between 1 and 1.5 cm. For example, the auxiliary handle 13 can be designed as a cylinder with a length of 3 cm and a diameter of 1.2 cm, installed at the top edge of the turntable 12, providing the user with a more convenient point of force application, so that even users with less strength can easily operate the drive shaft 10 to rotate.

[0037] In some technical solutions, the front side wall of the sealing cover 2 is provided with an opening 3 for taking out objects, and the opening 3 is fitted with a sealing plate.

[0038] The front wall of the sealing cover 2 has a retrieval opening 3. The shape of the retrieval opening 3 is usually circular or square, and its size is determined according to the size of the stored items and the retrieval needs. For example, if granular food seasonings are stored, the diameter of the retrieval opening 3 can be designed to be 2-3 cm to facilitate the removal of an appropriate amount of granules. A sealing plate is embedded inside the retrieval opening 3. The sealing plate is made of the same or similar material as the sealing cover 2, and its sealing method can be rubber gasket sealing (installing rubber gaskets at the contact edges between the sealing plate and the retrieval opening 3 to enhance the sealing effect), magnetic sealing (using magnetic materials to tightly attract the sealing plate and the retrieval opening 3 to achieve a seal), etc. When it is necessary to retrieve an item, simply open the sealing plate and retrieve it through the retrieval opening 3, which is convenient and quick. When not retrieving an item, the sealing plate effectively prevents dust, impurities, etc., from entering the circular box 1, keeping the items inside clean and hygienic.

[0039] I. Work Process 1. Initial state When the device is not in use, the circular top cover 14 completely covers the top opening of the circular box 1, achieving sealed storage of the items inside the box; the retrieval port 3 on the front side wall of the sealing cover 2 is completely blocked by the sealing plate to prevent dust and moisture from entering the box; the gear 11 in the slow-opening assembly is engaged with the rack 8, and the slider 7 stops at the initial position of the slide 6 (near the drive plate 4), and the entire device is in a stable sealed standby state.

[0040] 2. Start Preparation When you need to retrieve items from the box, first open the closed plate embedded in the retrieval port 3 on the front side wall of the sealing cover 2 (such as lifting the magnetically attached closed plate, removing the closed plate fixed by the buckle, etc.) to open the retrieval port 3 and prepare the passage for subsequent retrieval.

[0041] 3. Slow-release drive operation The operator holds the auxiliary handle 13 on the edge of the turntable 12 and applies rotational force in a preset direction (such as clockwise). Since the auxiliary handle 13 is installed on the top edge of the turntable 12, it forms a force-saving lever structure, allowing the operator to easily rotate the turntable 12; the turntable 12 is fixedly connected to the top of the drive shaft 10, thereby driving the drive shaft 10 to rotate synchronously.

[0042] 4. Gear and rack transmission and top cover movement When the drive shaft 10 rotates within the bearing housing 15 (the ball bearing 16 rolls in contact with the drive shaft 10, reducing rotational friction), the gear 11 fixed at its bottom rotates together with the drive shaft 10. Since the gear 11 meshes with the rack 8 outside the slider 7, the rotational motion of the gear 11 is converted into the linear motion of the rack 8 through the meshing of the tooth surfaces—if the gear 11 rotates clockwise, the rack 8 will move along the slide 6 away from the drive plate 4; if the gear 11 rotates counterclockwise, the rack 8 will move towards the drive plate 4 (taking clockwise rotation to open the top cover as an example).

[0043] The rack 8 is fixedly connected to the slider 7. The linear motion of the rack 8 causes the slider 7 to slide synchronously in the slide rail 6. The part of the slider 7 that extends into the sealing cover 2 is connected to the circular top cover 14. Therefore, the sliding of the slider 7 further causes the circular top cover 14 to move slowly away from the center of the box, and the opening at the top of the circular box 1 is gradually exposed.

[0044] 5. Quantitative sampling The operator adjusts the movement distance of the circular top cover 14 by controlling the rotation angle of the auxiliary handle 13: for small amounts of items, the auxiliary handle 13 is slightly rotated so that only 1 / 4 to 1 / 3 of the top opening of the circular box 1 is exposed, and the items inside can only be poured out through the small opening 3; for larger amounts of items, the rotation angle of the auxiliary handle 13 is increased so that 1 / 2 to 2 / 3 of the top opening of the box is exposed, increasing the amount of items poured out. When the required amount of items has been poured out, the auxiliary handle 13 is stopped, the circular top cover 14 stops moving, and the poured-out items can be collected directly from the retrieval 3.

[0045] 6. Reset the seal After retrieving the item, turn the auxiliary handle 13 in the opposite direction (e.g., counterclockwise) to drive the turntable 12, drive shaft 10, and gear 11 to rotate in the opposite direction. The gear 11, through meshing transmission, causes the rack 8 and slider 7 to slide in the opposite direction along the slide rail 6. The circular top cover 14 then moves back to its initial position until it completely covers the top opening of the circular box 1. Finally, reset the sealing plate of the retrieval port 3 to block the retrieval port 3, and restore the device to its initial sealed state, ready for the next use.

[0046] II. Core Working Principle 1. Principle of Mechanical Transmission: Conversion between Rotary Motion and Linear Motion The core transmission of the device relies on a gear and rack meshing mechanism: the circular motion (rotation) of gear 11 is converted into the linear motion (linear motion) of rack 8 through the meshing of its tooth surface with rack 8. This conversion process follows the principle of "gear module matching"—gear 11 and rack 8 have the same module (such as module 1 in the previous example), ensuring that for every tooth pitch rotated, rack 8 moves a distance of one tooth pitch (when the module is 1, the tooth pitch is approximately 3.14 mm), achieving precise motion transmission and laying the foundation for quantitative control.

[0047] 2. Slow-release control principle: Combination of controllable speed and smooth transmission Low-friction transmission ensures smooth operation: The drive shaft 10 and bearing housing 15 are coupled using a "ball rolling friction" structure—the balls 16 inside the rotating cavities 15 on the inner walls of shaft cylinders a151 and b152 convert the sliding friction between the drive shaft 10 and the shaft cylinder into rolling friction, significantly reducing the coefficient of friction (the rolling friction coefficient is about 1 / 10 to 1 / 50 of the sliding friction coefficient). This allows the rotational speed of the drive shaft 10 to be precisely controlled by the operator's hand force, avoiding sudden changes in rotational speed due to excessive friction. This ensures the smooth movement of the rack 8 and the circular top cover 14, achieving a "slow opening" effect.

[0048] The lever design at the operating end is designed to save effort: the auxiliary handle 13 is installed on the edge of the turntable 12, forming a lever structure with the drive shaft 10 as the fulcrum. According to the lever principle, the force applied by the operator at the end of the auxiliary handle 13 is amplified, which can easily control the rotation speed of the turntable 12 (the rotation speed is proportional to the speed of the hand force application), further avoiding the top cover from moving quickly due to excessive force, and ensuring the controllability of the slow opening process.

[0049] 3. Principle of quantitative sampling: precise correspondence between displacement and opening amount The outer diameter of the circular top cover 14 is slightly larger than the diameter of the circular box 1 (e.g., 1-2 cm larger), and the moving distance of the circular top cover 14 has a fixed proportional relationship with the rotation angle of the gear 11: for each rotation of the gear 11, all the teeth on its circumference (e.g., 20 teeth) mesh with the rack 8, and the distance that the rack 8 moves is equal to the circumference of the gear (circumference = module × number of teeth × π, when the module is 1 and the number of teeth is 20, the circumference is about 62.8 mm), which in turn drives the circular top cover 14 to move the same distance.

[0050] Since the opening area at the top of the circular box 1 is fixed, the distance the circular top cover 14 moves directly determines the exposed area of ​​the opening—the smaller the moving distance, the smaller the exposed area, and the less item is poured out; the larger the moving distance, the larger the exposed area, and the more item is poured out. By controlling the rotation angle of the auxiliary handle 13 (such as rotating 1 / 4 turn or 1 / 2 turn), the operator can precisely control the moving distance of the circular top cover 14, thereby achieving "quantitative item retrieval".

[0051] 4. Sealing principle: Synergistic effect of multiple sealing structures Top sealing of the box: The mating surface between the circular top cover 14 and the top opening of the circular box 1 can be designed as stepped or fitted with a silicone gasket. When the top cover is reset, it can achieve a tight fit with the opening of the box by its own weight or the positioning action of the slider, thus blocking the airflow between the inside and outside of the box. Retrieval port sealing: The closure plate of retrieval port 3 is sealed by a rubber gasket (the sealing is formed by the pressure of the gasket on the contact surface) or by a magnetic seal (the attraction between the permanent magnet and the metal sealing cover achieves a tight fit), preventing external impurities from entering the box. The double sealing structure ensures the airtightness and safety of the stored items.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A circular box gear and rack slow opening constant quantity taking structure, comprising a circular box body (1), characterized in that, The top of the circular box (1) is fitted with a sealing cover (2), and the rear side wall of the sealing cover (2) is fitted with a slow-opening component. A drive plate (4) is installed at the center of the rear side wall of the sealing cover (2), and a drive port (9) is opened at the center of the drive plate (4). The slow-opening assembly includes a bearing housing (15) installed in the drive port (9), a drive shaft (10) is installed in the bearing housing (15), and a gear (11) is installed at the bottom end of the drive shaft (10). The rear side wall of the sealing cover (2) is provided with a slide (6), and a slider (7) is installed in the slide (6). The slider (7) is located inside the sealing cover (2) and a circular top cover (14) is installed thereon. The outer diameter of the circular top cover (14) is slightly larger than the diameter of the circular box (1). A rack (8) is mounted on the outside of the slider (7), and the rack (8) meshes with the gear (11).

2. The circular cartridge gear and rack slow-opening dosing structure according to claim 1, characterized in that, The bearing housing (15) includes a shaft cylinder a (151) and a shaft cylinder b (152) installed in the drive port (9), and the shaft cylinder a (151) and shaft cylinder b (152) are arranged opposite to each other. The inner walls of the shaft cylinder a (151) and shaft cylinder b (152) are evenly spaced along their axis with rotating cavities (22). The rotating cavities (22) are equipped with balls (16), and the balls (16) are fitted to the drive shaft (10).

3. The circular cartridge gear and rack slow-opening dosing structure according to claim 2, characterized in that, Connecting plates (17) are installed on both sides of the shaft cylinder a (151) and shaft cylinder b (152). The side walls of the connecting plates (17) are provided with screw holes (18), and bolts (19) are screwed into the screw holes (18). Fixing plates (153) are installed on the rear side walls of the shaft cylinder a (151) and shaft cylinder b (152).

4. The circular cartridge gear and rack slow-opening dosing structure according to claim 3, characterized in that, The outer walls of the shaft cylinder a (151) and shaft cylinder b (152) are provided with oil injection holes (20), and the oil injection holes (20) are connected to the rotating cavity (22). The side wall of the fixing plate (153) is provided with fixing holes (31).

5. The circular cartridge gear and rack slow-opening dosing structure according to claim 1, characterized in that, A turntable (12) is mounted on the top of the drive shaft (10), and an auxiliary throttle (13) is mounted on the top edge of the turntable (12).

6. The circular cartridge gear and rack slow-opening dosing structure according to claim 5, characterized in that, The front side wall of the sealing cover (2) is provided with an opening (3), and a sealing plate is embedded in the opening (3).

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