Acquiring device

Abstract

The invention relates to a standard holding device, which comprises a main body shell provided with a receding through hole and a suction nozzle; the cover body is rotationally connected outside the main body shell; a drug dispensing assembly located inside the body housing; the trigger gear is rotationally connected into the main body shell; one of the cover body and the trigger gear is provided with a linkage bulge, and the other one is provided with a linkage hole; the linkage protrusion penetrates through the receding through hole and is movably inserted into the linkage hole. When the cover body rotates, the cover body firstly rotates till the linkage protrusion makes contact with the hole wall of one end of the linkage hole, and then under the cooperation of the linkage protrusion and the linkage hole, the cover body drives the trigger gear to synchronously rotate to trigger medicine distribution. According to the standard containing device, the cover body of the standard containing device and the trigger gear are connected in an inserted mode through the linkage protrusion and the linkage hole to establish the linkage relation, the two operation steps of cover body opening and suction preparation can be completed through one action, operation is convenient and fast, the structure is simple, structural modification is little, the linkage relation is stable, and faults are not prone to occurring.

Description

Technical Field

[0001] The present invention relates to the technical field of powder inhalation devices, in particular to a powder inhalation device. Background Art

[0002] Pulmonary drug delivery system refers to a drug delivery system that directly enters the respiratory tract through a drug delivery device to exert local or systemic therapeutic effects. Currently, pulmonary drug delivery systems mainly include metered-dose inhalation aerosols, inhalation sprays, inhalation powder inhalers or dry powder inhalers. Among them, dry powder inhalers have no synergistic requirements, do not require propellants, deliver larger doses, are more suitable for large molecule drugs, and are widely used.

[0003] The quasi-inhaler is a commonly used dry powder inhaler. The quasi-inhaler mainly includes a bottom shell, an outer cover shell, a slide bar and a drug dispensing assembly located in the bottom shell. The bottom shell contains drug blisters. Part of the structure of the slide bar is located in the bottom shell. The toggle portion of the slide bar is located outside the bottom shell, and is used to drive the slide bar to rotate by toggling the toggle portion of the slide bar. The outer cover shell is used to cover the suction nozzle of the quasi-inhaler on the one hand to prevent the suction nozzle from being contaminated, and on the other hand to cover the slide bar to prevent the slide bar from being accidentally touched in a non-drug administration state and causing an erroneous trigger. The baffle of the slide bar is located inside the bottom shell and is used to isolate the suction nozzle and the drug bin of the bottom shell to prevent external dust from entering the drug bin and causing contamination. In addition, the empty blister is removed and the new blister is moved to the drug administration position by rotating the slide bar.

[0004] Before inhaling, the user needs to open the outer cover first, and then push the slider until a click is heard to trigger the new blister into position, so that the device is ready to administer the drug. Then, the user can hold the mouthpiece to inhale the drug. The existing device needs to open the outer cover and push the slider before each inhalation, which is cumbersome to operate. If the user forgets to push the slider and inhales directly, the baffle of the slider will isolate the medicine compartment and the mouthpiece, and the empty blister will remain in the dosing position, and the drug cannot be inhaled. The device has no feedback or prompts, causing the user to mistakenly believe that the drug has been inhaled, delaying the condition. If the slider does not slide into place, the baffle of the slider will block part of the mouthpiece's channel, and the new blister will not be fully opened, resulting in an incorrect dose of the drug, resulting in drug waste, and some drug powder will remain on the baffle of the slider, causing pollution. If the user moves the slider back and forth multiple times, the new blister will be moved to the waste medicine area before it is used and fall into the bottom shell, causing waste and pollution. In addition, the residual powder will be distributed between the gears, resulting in increased friction and rustling noises. The subsequent movement of the slider will require greater force. After the drug is inhaled, the slider is moved in the opposite direction to reset the slider to isolate the nozzle and the medicine compartment of the bottom shell again. In addition, during the process of the slider resetting and rotating, the old blister stays in place and the blister in the medicine belt does not rotate.

[0005] Some of the accumulators can open the outer cover and rotate the slide bar in one operation. For example, the accumulator provided by CN116492551A links the protective cover and the trigger member through a connecting rod mechanism, and the accumulator structure of this solution is complex. The inhaler provided by CN116672549A has an actuating member arranged on the inner wall of the shell that can move the raised portion of the main wheel during the rotation of the shell, thereby driving the main wheel to rotate. At the same time, since the main wheel is engaged with the trigger auxiliary member, the main wheel can drive the trigger auxiliary member to rotate. In this scheme, the actuating member and the raised portion are both raised structures, and when the inhaler is in an initial state, there is a distance between the actuating member and the raised structure. Only when the shell is rotated until the actuating member contacts the raised portion can the shell drive the main wheel to rotate. If the user rotates the shell with too much force, causing the actuating member to violently hit the raised portion and pass over the raised portion, the main wheel and the slide rod cannot be driven to rotate, and the user cannot inhale the medicine. The device has no feedback and prompts. If the user mistakenly believes that the medicine has been inhaled, it will delay the disease. Summary of the invention

[0006] Based on the above-mentioned defects in the prior art, the purpose of the present invention is to provide a suction container, in which the cover body and the trigger gear of the suction container are connected by a linkage protrusion and a linkage hole to establish a linkage relationship, and the two operation steps of opening the cover body and preparing for inhalation can be completed in one action. The operation is convenient, the structure is simple, the structural changes are less, the linkage relationship is stable, and it is not easy to fail.

[0007] To this end, the present invention provides the following technical solutions.

[0008] The present invention provides a calibrator, the calibrator comprising:

[0009] A main body shell, which is provided with a clearance through hole and a suction nozzle;

[0010] A cover body, which is rotatably connected to the outside of the main shell; the cover body can rotate under external force to switch between a closed position for covering the suction nozzle and an open position for exposing the suction nozzle;

[0011] a drug dispensing assembly located inside the main housing;

[0012] A trigger gear, which is rotatably connected to the main housing and rotates to trigger the drug dispensing assembly to dispense the drug;

[0013] Wherein, one of the cover body and the trigger gear is provided with a linkage protrusion, and the other is provided with a linkage hole; the linkage protrusion passes through the clearance through hole and is movably inserted into the linkage hole, and the length L1 of the linkage hole in the rotation direction of the cover body is greater than the length L2 of the linkage protrusion in the rotation direction;

[0014] When the cover body rotates, the cover body first rotates until the linkage protrusion contacts the hole wall at one end of the linkage hole, and then, with the cooperation of the linkage protrusion and the linkage hole, the cover body drives the trigger gear to rotate synchronously, so that the trigger gear triggers the drug dispensing.

[0015] Optionally, the trigger gear is provided with a linkage protrusion, and the cover body is provided with a linkage hole;

[0016] In the process of the cover body rotating from the closed position to the open position, the cover body first rotates until the hole wall of the first end of the linkage hole contacts the linkage protrusion, and then the first end pushes the linkage protrusion to drive the trigger gear to rotate synchronously to trigger the drug dispensing, so that the drug dispenser is in a drug-preparing state;

[0017] During the process of the cover body rotating from the open position to the closed position, the cover body first rotates until the hole wall of the second end of the linkage hole contacts the linkage protrusion, and then the second end pushes the linkage protrusion to drive the trigger gear to rotate synchronously, thereby driving the trigger gear to reset.

[0018] Optionally, the clearance through hole is a circular hole, the number of the linkage protrusions is at least two, at least one linkage protrusion abuts against the hole wall of the clearance through hole, and the linkage holes and the linkage protrusions are matched one by one.

[0019] Optionally, the linkage protrusions include at least two first protrusions and at least two second protrusions, all of the first protrusions are spaced apart and distributed along the rotation direction of the cover body, and all of the second protrusions are spaced apart and distributed along the rotation direction of the cover body;

[0020] The circular motion track of the second protrusion surrounds the circular motion track of the first protrusion, and the second protrusion abuts against the hole wall of the clearance through hole.

[0021] Optionally, the trigger gear is provided with a linkage hole, and the cover body is provided with a linkage protrusion;

[0022] In the process of the cover body rotating from the closed position to the open position, the cover body first rotates until the linkage protrusion contacts the hole wall of the first end of the linkage hole, and then the linkage protrusion pushes the first end to drive the trigger gear to rotate synchronously to trigger the drug dispensing, so that the drug dispenser is in a drug-preparing state;

[0023] During the process of the cover body rotating from the open position to the closed position, the cover body first rotates until the linkage protrusion contacts the hole wall of the second end of the linkage hole, and then the linkage protrusion pushes the second end to drive the trigger gear to rotate synchronously, thereby driving the trigger gear to reset.

[0024] Optionally, the clearance through hole is an arc hole.

[0025] Optionally, the linkage hole is an arc hole, and the linkage protrusion is an arc protrusion; the arc angle of the yielding through hole is α, the arc angle of the linkage protrusion is β, and the rotatable angle of the cover body is θ, α=β+θ.

[0026] Optionally, the number of the linkage protrusions is at least two, and the number of the linkage protrusions, the linkage holes and the clearance through holes is the same and they are arranged in one-to-one correspondence.

[0027] Optionally, the drug dispensing assembly includes a main wheel, and the trigger gear is engaged with the main wheel; the trigger gear triggers the drug dispensing by driving the main wheel to rotate.

[0028] Optionally, when the cover body rotates to switch between the open position and the closed position, the cover body first rotates 0.5°-20° so that the linkage protrusion contacts the hole wall at one end of the linkage hole.

[0029] Optionally, at least two linkage protrusions are spaced apart and distributed along the rotation direction of the cover body, and the linkage holes are matched with the linkage protrusions one by one;

[0030] And / or, the linkage hole is a circular arc protrusion.

[0031] Optionally, the main body shell is substantially circular, and the container further comprises a bracket, and the bracket is used to vertically store the main body shell on a placement surface.

[0032] Optionally, the main body shell is vertically supported above the bracket, and a supporting surface is provided at the bottom of the bracket, and the supporting surface is used to support on the placement surface.

[0033] Optionally, the calibrator further includes a fixed shell, which is connected to the outside of the main shell and at least partially surrounds the main shell; the bracket is connected to the fixed shell or is integrally formed with the fixed shell.

[0034] Optionally, the fixed shell is buckled with the main shell.

[0035] Optionally, the cover body is provided with a locking buckle, and the main shell is provided with a locking buckle groove;

[0036] When the cover is in the closed position, the locking buckle is buckled in the locking buckle groove.

[0037] Optionally, the main shell and the cover body cooperate with each other through limiting holes and limiting protrusions to limit the open position and the closed position of the cover body.

[0038] Optionally, the limiting hole is arranged on the main body shell and is arc-shaped, the limiting protrusion is arranged on the inner wall of the cover body, and the limiting protrusion extends into the limiting hole; the hole wall of the limiting hole is provided with a first clamping point and a second clamping point;

[0039] When the cover body rotates, the limiting protrusion moves along the limiting hole;

[0040] When the cover body is in the closed position, the first clamping point restricts the movement of the limiting protrusion to restrict the cover body from leaving the closed position;

[0041] When the cover body is in the open position, the second clamping point restricts the movement of the limiting protrusion to restrict the cover body from leaving the open position.

[0042] Optionally, when the cover body is switched between the open position and the closed position, the limiting protrusion collides with a hole wall at one end of the limiting hole and emits a collision sound to prompt that the cover body has been rotated into place.

[0043] The present invention has the following technical effects:

[0044] The present invention provides an inhaler, wherein a cover body of the inhaler and a trigger gear are plugged into each other through a linkage protrusion and a linkage hole to establish a linkage relationship, and a user can drive the trigger gear to rotate while opening the cover body, and two operation steps of opening the cover body and preparing for inhalation can be completed in one action, which is convenient to operate and avoids the user's failure to inhale medicine correctly due to misoperation or missed operation.

[0045] In addition, the structure of the inhaler of the present invention is simple, with fewer structural changes, and the corresponding changes in the processing mold and assembly production line are also less, which reduces the cost of modification. The linkage relationship between the cover body and the trigger gear is stable, and the linkage protrusion and the linkage hole will not or are not likely to be separated due to excessive force of the user turning the cover body, thereby avoiding malfunction of the inhaler and avoiding the situation where the user cannot inhale the medicine but the user mistakenly thinks that he has inhaled the medicine.

[0046] Furthermore, by limiting the length L1 of the linkage hole in the rotation direction of the cover body to be greater than the length L2 of the linkage protrusion in the rotation direction, a space is created for relative movement between the linkage protrusion and the linkage hole, thereby reducing the difficulty of assembling the linkage hole and the linkage protrusion, reducing the precision requirements for the two structures of the linkage hole and the linkage protrusion, reducing the requirements for molds and processes, and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a side view of the container when the cover is in a closed position in the first embodiment of the present invention;

[0048] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0049] Figure 3 is a side view of the container when the cover is in the open position in the first embodiment of the present invention;

[0050] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0051] Figure 5 Schematic diagram of the three-dimensional structure of the trigger gear in the first embodiment of the present invention Figure 1 ;

[0052] Figure 6 Schematic diagram of the three-dimensional structure of the trigger gear in the first embodiment of the present invention Figure 2 ;

[0053] Figure 7 Schematic diagram of the three-dimensional structure of the cover body in the first embodiment of the present invention Figure 1 ;

[0054] Figure 8 A side view of a cover body in a first embodiment of the present invention;

[0055] Fig. 9 A partial structural stereogram of the first embodiment of the present invention. Figure 1 ;

[0056] Fig.10 is a side view of the first housing in the first embodiment of the present invention;

[0057] Fig.11 is a side view of the second housing of the present invention;

[0058] Fig.12 It is a schematic diagram of the three-dimensional structure of the fixed housing of the present invention;

[0059] Fig.13 A side view of a fixed housing of the present invention;

[0060] Fig.14 A partial structural stereogram of the first embodiment of the present invention. Figure 2 ;

[0061] Fig.15 It is a schematic diagram of the three-dimensional structure of the container when the cover is in the closed position in the first embodiment of the present invention;

[0062] Fig.16 A partial structural stereogram of the second embodiment of the present invention.

[0063] Fig.17A side view of a trigger gear in a second embodiment of the present invention;

[0064] Fig.18 This is a schematic diagram of the three-dimensional structure of the cover body in the second embodiment of the present invention;

[0065] Fig.19 It is a side view of the second housing in the second embodiment of the present invention.

[0066] Description of Reference Numerals

[0067] 100. Acceptor;

[0068] 1. Main body shell; 11. Displacement through hole; 12. Suction nozzle; 13. Locking buckle groove; 14. Limiting hole; 141. First clamping point; 142. Second clamping point; 143. First limiting space; 144. Second limiting space; 15. Buckling hole; 16. First shell; 17. Second shell;

[0069] 2. Cover body; 21. Locking buckle; 22. Limiting protrusion;

[0070] 3. trigger gear; 31. main body; 311. gear tooth structure; 32. shaft hole;

[0071] 41, linkage protrusion; 411, first protrusion; 412, second protrusion;

[0072] 42. Linkage protrusion;

[0073] 51, linkage hole; 511, first end; 512, second end;

[0074] 52, linkage hole; 521, first end; 522, second end;

[0075] 61, main wheel; 62, hollow wheel; 621, bubble groove;

[0076] 7. Fixed housing; 71. Bracket; 711. First annular support column; 712. Second annular support column; 72. Snap-on protrusion. DETAILED DESCRIPTION

[0077] In order to make the technical solutions and beneficial effects of the present invention more clearly understood, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0078] In the description of the present invention, unless otherwise explicitly defined, terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “height”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0079] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two; "several" means at least one, unless otherwise clearly defined.

[0080] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0082] The "first direction a" and "second direction b" mentioned in the present invention are both Figure 1 , Figure 2 , Figure 4 and Fig.17 The markings in shall prevail.

[0083] According to the following Figures 1 to 19The calibrator of the present invention is described in detail.

[0084] In this embodiment, if Figure 1 , Figure 3 , Fig. 9 , Fig.15 and Fig.16 As shown, the accumulator 100 includes a main housing 1, a cover 2, a medicine dispensing assembly and a trigger gear 3. The main housing 1 is provided with a clearance through hole 11 and a suction nozzle 12. The main housing 1 constitutes a medicine chamber, and the medicine dispensing assembly is located inside the main housing 1. The cover 2 is rotatably connected to the outside of the main housing 1. The cover 2 can rotate under external force to switch between a closed position for covering the suction nozzle 12 and an open position for exposing the suction nozzle 12. The trigger gear 3 is located inside the main housing 1 and is rotatably connected to the main housing 1. The trigger gear 3 triggers the medicine dispensing assembly to dispense medicine by rotating.

[0085] It should be understood that the drug dispensing assembly can adopt the drug dispensing structure of any existing container, generally, such as Fig. 9 As shown, the drug dispensing assembly includes a hollow wheel 62, a blister roll, a blister substrate winding wheel and a blister cover sheet winding wheel (not shown in the figure), the blister roll has a plurality of drug blisters, the blister roll is rotatably connected to the main body shell 1, the blister substrate winding wheel is used to collect the substrate after the blister is torn, and the blister cover sheet winding wheel is used to collect the cover sheet after the blister is torn. A blister groove 621 is provided on the outer peripheral wall of the hollow wheel 62, and some blisters on the blister roll are respectively embedded in the corresponding blister grooves 621, so that when the hollow wheel 62 rotates, the blister medicinal materials of the blister roll can move forward.

[0086] like Figures 1 to 4 , Figures 16 to 18As shown, one of the cover body 2 and the trigger gear 3 is provided with a linkage protrusion, and the other is provided with a linkage hole; the linkage protrusion passes through the yielding through hole 11 and is movably inserted in the linkage hole, and the length L1 of the linkage hole in the rotation direction of the cover body 2 is greater than the length L2 of the linkage protrusion in the rotation direction, so that the linkage protrusion can move in the linkage hole, wherein the linkage hole can be a through hole or a blind hole. When the cover body 2 rotates from the closed position to the open position, the cover body 2 first rotates until the linkage protrusion contacts the hole wall at one end of the linkage hole, and then, under the cooperation of the linkage protrusion and the linkage hole, the cover body 2 drives the trigger gear 3 to rotate synchronously, and the trigger gear 3 transmits the rotation driving force to the hollow wheel 62, and triggers the drug dispensing by triggering the rotation of the hollow wheel 62, so that the accumulator 100 is in a state ready for drug administration. When the cover body 2 rotates from the open position to the closed position, the cover body 2 first rotates until the linkage protrusion contacts the hole wall at the other end of the linkage hole, and then, with the cooperation of the linkage protrusion and the linkage hole, the cover body 2 drives the trigger gear 3 to rotate synchronously. Since the trigger gear 3 rotates in the opposite direction, the hollow wheel 62 does not rotate at this time, and the cover body 2 drives the trigger gear 3 to reset, waiting for the next triggering of drug dispensing, wherein "drug dispensing" means that the new blister moves to the nozzle 12, that is, the new blister is in place, and the user can directly inhale the drug.

[0087] By adopting the above technical solution, the cover body 2 and the trigger gear 3 establish a linkage relationship by plugging the linkage protrusion and the linkage hole. In this way, the user can drive the trigger gear 3 to rotate while opening the cover body 2. One action can complete the two operation steps of opening the cover body and preparing for inhalation (new blister in place). The user can directly inhale the medicine, which is convenient to operate and avoids the user's failure to inhale the medicine correctly due to misoperation or missed operation.

[0088] In addition, compared with the solution of the prior art CN116492551A, the accumulator 100 of this solution has a simple structure, less structural changes, and less corresponding changes in the processing mold and assembly production line, thereby reducing the cost of modification. Compared with the solution of the prior art CN116672549A in which the actuator and the protrusion are both protrusion structures for linkage, the accumulator 100 of this solution links the cover body 2 with the trigger gear 3 through the linkage protrusion and the linkage hole, and the linkage relationship is more stable. The linkage protrusion and the linkage hole will not or are not likely to be separated due to the user's excessive force in turning the cover body 2, thereby avoiding the accumulator 100 from malfunctioning and avoiding the situation where the user cannot inhale the medicine and the user mistakenly thinks that the medicine has been inhaled.

[0089] In addition, by limiting the length L1 of the linkage hole in the rotation direction of the cover body 2 to be greater than the length L2 of the linkage protrusion in the rotation direction, so that there is a space for relative movement between the linkage protrusion and the linkage hole, the assembly difficulty of the linkage hole and the linkage protrusion can be reduced, the precision requirements of the two structures of the linkage hole and the linkage protrusion can be reduced, the requirements for molds and processes can be reduced, and the yield rate can be improved.

[0090] In one embodiment, if Fig. 9 As shown, the drug dispensing assembly includes a main wheel 61, and the trigger gear 3 is meshed with the main wheel 61; the trigger gear 3 drives the main wheel 61 to rotate to trigger drug dispensing. Specifically, the hollow wheel 62 is sleeved on the main wheel 61, and the main wheel 61 is meshed with the ratchet teeth of the hollow wheel 62 through the ratchet pawl. When using the calibrator 100, as shown in FIG. Figures 1 to 5 As shown in FIG. 1 , when the cover body 2 rotates from the closed position to the open position, the cover body 2 drives the trigger gear 3 to rotate along the first direction a, the main wheel 61 rotates in the opposite direction (rotates along the second direction b), the ratchet of the main wheel 61 drives the hollow wheel 62 to rotate synchronously, and the hollow wheel 62 drives the blister medicinal material to move forward until the new blister is in place. At this time, as shown in FIG. Figure 3 As shown, the cover 2 is in the open position, the container 100 is in a state of preparing for medication, and the user can inhale the medication through the mouthpiece 12. Figures 1 to 5 As shown, when the cover body 2 rotates from the open position to the closed position, the cover body 2 drives the trigger gear 3 to rotate along the second direction b, and the main wheel 61 rotates in the opposite direction (rotates along the first direction a). At this time, the ratchet of the main wheel 61 is compressed and rebounds, and the hollow wheel 62 does not rotate. The old blister still stays in place. When the next drug dispensing is triggered, the old blister is removed and the new blister is in place to complete a new preparation for drug administration.

[0091] In one embodiment, when the cover body 2 rotates to switch between the open position and the closed position, the cover body 2 first rotates 0.5°-20° so that the linkage protrusion contacts the hole wall at the corresponding end of the linkage hole, and then the cover body 2 can drive the trigger gear 3 to rotate synchronously. Specifically, the angle of the cover body 2 first rotates includes but is not limited to 0.5°, 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, 4.5°, 5°, etc. 5.5°, 6°, 6.5°, 7°, 7.5°, 8°, 8.5°, 9°, 9.5°, 10°, 10.5°, 11°, 11.5°, 12°, 12.5°, 13°, 13.5°, 14°, 14.5°, 15°, 15.5°, 16°, 17.5°, 18°, 18.5°, 19°, 19.5°, 20°. In this solution, the limited rotation angle of the cover body 2 is limited, and the rapid triggering of drug dispensing can be ensured under the premise of reducing the difficulty of assembling the linkage protrusion and the linkage hole. Preferably, when the cover body 2 is rotated 4° first, the linkage protrusion contacts the hole wall at one end corresponding to the linkage hole.

[0092] In one embodiment, if Figure 5 and Fig.18 As shown, the number of the linkage protrusions is at least two, and at least two linkage protrusions are spaced apart and distributed along the rotation direction of the cover body 2, and the linkage holes and the linkage protrusions are matched one by one to improve the stability of the linkage between the cover body 2 and the trigger gear 3.

[0093] In one embodiment, if Figure 2 , Fig.17 and Fig.18 As shown, the linkage hole is an arc hole, and the linkage protrusion is an arc protrusion, that is, the cross section of the linkage protrusion is arc-shaped. Compared with the cylindrical linkage protrusion, the linkage protrusion of this solution has a larger contact area with the linkage hole, which is conducive to stable linkage. The arc angle of the linkage hole is greater than the arc angle of the linkage protrusion, and the difference between the arc angles of the two is 0.5°-20°. In this way, the cover body 2 is first rotated by 0.5°-20° to make the linkage protrusion contact the hole wall at the corresponding end of the linkage hole, and then the cover body 2 can drive the trigger gear 3 to rotate synchronously.

[0094] In one embodiment, if Figure 1 , Fig.10 and Fig.11 As shown, the main housing 1 is roughly circular. Figure 1 and Fig.15 As shown, the organizer 100 further includes a bracket 71, which is used to store the main housing 1 vertically on a placement surface (such as a desktop). The existing organizers, because the overall device is roughly circular, can only be placed flat on the placement surface, which increases the horizontal occupied space. In addition, the square organizer and the placement surface are in point-to-surface contact or arc-to-plane contact, which makes the organizer easily rotate when touched by external forces, and the storage is not stable. This solution, such as Figure 1 and Figure 3 As shown, by setting the bracket 71, the main housing 1 is vertically stored on the placement surface. On the one hand, it can reduce the occupation of the horizontal space, and on the other hand, it is more convenient to store and store, and it will not be easily moved. Figure 1 The up-down direction in FIG. 1 is the vertical storage direction of the container 100 .

[0095] Furthermore, if Figure 1As shown, the main housing 1 is vertically supported above the bracket 71, and a support surface is provided at the bottom of the bracket 71, which is used to support the placement surface, so that the center of gravity of the main housing 1 can fall entirely or mostly on the bracket 71, which is conducive to the bracket 71 to stably support the main housing 1. Of course, the bracket 71 can also be set on one side of the main housing 1 in the left-right direction or the front-back direction. In order to ensure the stability of the center of gravity of the quasi-container 100, the gravity of the bracket 71 must be greater than or equal to the total weight of the main housing 1, the cover 2 and the components arranged inside the main housing 1, so as to ensure that the bracket 71 can stably support the main housing 1.

[0096] Furthermore, if Fig.12 and Fig.15 As shown, the bracket 71 includes a first annular support column 711 and a second annular support column 712, the first annular support column 711 is arranged around the second annular support column 712, and the first annular support column 711 and the second annular support column 712 jointly support the main shell 1, so that it is ensured that the bracket 71 can stably support the main shell 1, and at the same time, it is also conducive to the lightweight design of the quasi-conductor 100. Among them, the shapes of the first annular support column 711 and the second annular support column 712 include but are not limited to regular shapes or irregular shapes such as square, circular, and triangular. Of course, the bracket 71 can also be cylindrical, or it can be composed of multiple non-annular support columns, as long as it can stably support the main shell 1.

[0097] In one embodiment, if Figure 1 and Fig.12 As shown, the calibrator 100 further includes a fixed shell 7, which is connected to the outside of the main shell 1, and the fixed shell 7 does not rotate. The bracket 71 is connected to the fixed shell 7 or is integrally formed with the fixed shell 7. The longitudinal section of the fixed shell 7 is roughly U-shaped, and the fixed shell 7 partially surrounds the main shell 1 to improve the stability of the connection between the bracket 71 and the main shell 1.

[0098] Furthermore, the fixed housing 7 is buckled with the main housing 1, and the assembly is convenient. Fig.10 , Fig.11 and Fig.13 As shown, the inner wall of the fixed shell 7 is provided with four buckling protrusions 72, and the main shell 1 is provided with four buckling holes 15. The buckling protrusions 72 and the buckling holes 15 are arranged one by one and buckled with each other to connect the fixed shell 7 to the main shell 1, wherein the buckling holes 15 can be through holes or blind holes. Preferably, in order to facilitate the thin design of the main shell 1, the buckling holes 15 are through holes. Of course, the number of the buckling protrusions 72 is not limited to four, and can also be two, three or even more, and the buckling holes 15 and the buckling protrusions 72 are arranged one by one.

[0099] In one embodiment, if Figure 7 and Fig.14 As shown, the cover body 2 is provided with a locking buckle 21, and the main shell 1 is provided with a locking buckle groove 13. When the cover body 2 is in a closed position, the locking buckle 21 is buckled into the locking buckle groove 13 to prevent the cover body 2 from being accidentally touched and opened, thereby preventing the suction nozzle 12 and the internal space of the main shell 1 from being contaminated.

[0100] Furthermore, if Figure 1 and Fig.14 As shown, when the cover 2 is in the closed position, the locking buckle 21 abuts against the groove wall of the locking buckle groove 13 along the first direction a, and the side wall of the cover 2 abuts against the fixed shell 7 along the second direction b. In this way, the locking buckle 21 and the fixed shell 7 jointly limit the cover 2 to limit the rotation of the cover 2, so that the cover 2 can be stably in the closed position. When the force of rotating the cover 2 along the first direction a reaches a preset value, the locking buckle 21 can be disengaged from the locking buckle groove 13, so that the cover 2 can smoothly move along the first direction a to the open position.

[0101] Furthermore, if Fig.10 , Fig.11 and Fig.14 As shown, the main housing 1 includes a first housing 16 and a second housing 17, the first housing 16 and the second housing 17 are connected (for example, interlocked) to form a chamber, the trigger gear 3 and the drug dispensing assembly are both located in the chamber, and the clearance hole 11 is set on the first housing 16. Fig.14 As shown, the waist seam at the joint between the first shell 16 and the second shell 17 forms a locking buckle groove 13, eliminating the groove opening process.

[0102] In one embodiment, if Figure 7 , Fig.10 , Fig.18 and Fig.19 As shown, the main housing 1 and the cover 2 cooperate with the limiting protrusion 22 through the limiting hole 14 to limit the open position and the closed position of the cover 2, so that the cover 2 does not easily rotate when it is maintained in the open position or the closed position. The limiting hole 14 can be a through hole or a blind hole, and the limiting hole 14 is set on the first shell 16.

[0103] Furthermore, if Figure 1 , Figure 7 , Fig.10 and Fig.19As shown, the limiting hole 14 is provided on the main shell 1 and is arc-shaped, the limiting protrusion 22 is provided on the inner wall of the cover body 2, and the limiting protrusion 22 extends into the limiting hole 14. When the cover body 2 rotates, the limiting protrusion 22 can move relative to the limiting hole 14. A first clamping point 141 and a second clamping point 142 are provided on the hole wall of the limiting hole 14, and the first clamping point 141 and the second clamping point 142 are sequentially distributed along the first direction a, and a first limiting space 143 is formed between the first clamping point 141 and the hole wall at one end of the limiting hole 14, and a second limiting space 144 is formed between the second clamping point 142 and the hole wall at the other end of the limiting hole 14.

[0104] When the cover 2 is in the closed position, the limiting protrusion 22 of the cover 2 is engaged in the first limiting space 143. At this time, the first clamping point 141 limits the limiting protrusion 22 from moving along the first direction a, thereby limiting the cover 2 from leaving the closed position. When the external force applied to the cover 2 reaches a preset value, the external force can drive the cover 2 to rotate along the first direction a. During the rotation of the cover 2, the limiting protrusion 22 first passes over the first clamping point 141, and then moves relative to the limiting hole 14 until the limiting protrusion 22 moves along the first direction a and abuts against the second clamping point 142. The external force is increased to make the limiting protrusion 22 pass over the second clamping point 142. After passing over, the resistance of the second clamping point 142 to the limiting protrusion 22 disappears, and the rotation speed of the cover 2 is accelerated, and the limiting protrusion 22 is moved to the second clamping point 142. The cover 2 stops rotating and the external force applied to the cover 2 is removed. Since the second clamping point 142 limits the movement of the limiting protrusion 22 in the second direction b, the cover 2 can be limited from leaving the open position.

[0105] Similarly, when the cover body 2 is in the open position, an external force drives the cover body 2 to move along the second direction b, and the external force is increased so that the limiting protrusion 22 first passes the second card point 142, then moves to contact the first card point 141, and then passes the first card point 141. The limiting protrusion 22 hits the hole wall of the limiting hole 14 and produces a collision sound to prompt the user that the cover body 2 has reached the closed position. The limiting protrusion 22 is engaged in the first limiting space 143, and the cover body 2 stops rotating.

[0106] In one embodiment, if Figure 5 , Figure 6 , Fig. 9 , Fig.16 and Fig.17As shown, the trigger gear 3 includes a main body 31 and an axial hole 32, the axial hole 32 is used to be rotatably connected to the main housing 1, and the main body 31 is provided with a gear structure 311, and the gear structure 311 is used to mesh with the main wheel 61. The main body 31 is generally circular, and the trigger gear 3 is completely located inside the main housing 1. Compared with the slide rod in the prior art, there is no need to open a through hole on the main housing for the user to toggle the slide rod, thereby improving the internal sanitation of the main housing 1 and improving the safety of medication.

[0107] In this solution, the linkage protrusion and the linkage hole can be arranged by setting a linkage protrusion on the trigger gear 3 and setting a matching linkage hole on the cover body 2, or by setting a linkage hole on the trigger gear 3 and setting a matching linkage protrusion on the cover body 2, or by setting a first linkage protrusion and a first linkage hole on the trigger gear 3, and setting a second linkage hole and a second linkage protrusion on the cover body 2, the first linkage protrusion matches the second linkage hole, and the first linkage hole matches the second linkage protrusion. Regarding the specific arrangement schemes of the linkage protrusion and the linkage hole, this solution introduces two of them in detail, see the following first embodiment and second embodiment for details.

[0108] First embodiment

[0109] According to the following Figures 1 to 15 The first embodiment of the calibrator according to the present invention will be described in detail.

[0110] In this embodiment, if Figures 1 to 10 As shown, the trigger gear 3 is provided with a linkage protrusion 41, and the cover body 2 is provided with a linkage hole 51, and the linkage protrusion 41 passes through the clearance through hole 11 from the inside to the outside, and extends to the outside of the main housing 1 to be inserted into the linkage hole 51. The linkage hole 51 has a first end 511 and a second end 512, and the first end 511 and the second end 512 are spaced apart and distributed along the first direction a.

[0111] like Figure 1 and Figure 2 As shown, when the cover body 2 is in the closed position, the linkage protrusion 41 abuts against the second end 512 of the linkage hole 51 .

[0112] like Figures 1 to 4 As shown, during the process of the cover body 2 rotating from the closed position to the open position, the linkage hole 51 rotates along the first direction a with the cover body 2. When the cover body 2 rotates a certain angle (for example, 4°), as shown in FIG. Figure 4 As shown, the hole wall of the first end 511 of the linkage hole 51 contacts the linkage protrusion 41, and then the cover body 2 continues to rotate along the first direction a, and the first end 511 pushes the linkage protrusion 41 to rotate along the first direction a, so as to drive the trigger gear 3 to rotate synchronously to trigger the drug dispensing. When the cover body 2 rotates to the open position, the drug dispensing is completed, so that the container 100 is in a state ready for drug administration.

[0113] like Figures 1 to 4 As shown, during the process of the cover body 2 rotating from the open position to the closed position, the linkage hole 51 rotates along the second direction b with the cover body 2. When the cover body 2 rotates a certain angle (for example, 4°), as shown in FIG. Figure 2 As shown, the hole wall of the second end 512 of the linkage hole 51 contacts the linkage protrusion 41, and then the cover body 2 continues to rotate along the second direction b, so that the second end 512 pushes the linkage protrusion 41 to rotate along the second direction b, thereby driving the trigger gear 3 to rotate synchronously, and then driving the trigger gear 3 to reset.

[0114] In one embodiment, if Figure 2 As shown, the arc angle of the linkage hole 51 is 104°, and the arc angle of the linkage protrusion 41 is 100°. In this way, each time the cover body 2 rotates 4° in advance, the trigger gear 3 can be pushed to rotate synchronously.

[0115] In one embodiment, if Figure 2 and Fig.10 As shown, the clearance through hole 11 is a circular hole, the number of the linkage protrusions 41 is at least two, at least one linkage protrusion 41 abuts against the hole wall of the clearance through hole 11, and the linkage hole 51 is matched with the linkage protrusion 41. In this solution, the clearance through hole 11 abuts against at least one linkage protrusion 41, so that the main housing 1 provides support for the rotation of the trigger gear 3, which is conducive to the stable rotation of the trigger gear 3. Of course, the clearance through hole 11 is not limited to a circular hole, but can also be an arc hole. The clearance through hole 11 is matched with the linkage protrusion 41 one by one, and the arc angle of the clearance through hole 11 is greater than the arc angle of the linkage hole 51, so as to avoid the clearance through hole 11 interfering with the rotation of the linkage protrusion 41.

[0116] Furthermore, if Figure 2 and Figure 5 As shown, the linkage protrusion 41 includes two first protrusions 411 and two second protrusions 412. Figure 2 , Figure 7 and Figure 8 As shown, the number of linkage holes 51 is four, of which two linkage holes 51 are respectively matched with two first protrusions 411, and the other two linkage holes 51 are respectively matched with two second protrusions 412. All the first protrusions 411 are spaced apart and distributed along the rotation direction of the cover body 2, and all the second protrusions 412 are spaced apart and distributed along the rotation direction of the cover body 2. The circular motion trajectory of the second protrusions 412 surrounds the circular motion trajectory of the first protrusions 411, and the second protrusions 412 abut against the hole wall of the clearance through hole 11. Of course, the number of first protrusions 411 is not limited to two, and the number of second protrusions 412 is not limited to two. The number of first protrusions 411 and second protrusions 412 can also be one, three, four or even more.

[0117] Furthermore, if Figure 2 and Figure 5 As shown, the linkage protrusion 41 is a circular arc protrusion, the linkage hole 51 is a circular arc hole, the length of the second protrusion 412 in the rotation direction of the cover body 2 is greater than the length of the first protrusion 411 in the rotation direction of the cover body 2, and accordingly, the length of the linkage hole 51 matched with the second protrusion 412 in the rotation direction of the cover body 2 is greater than the length of the linkage hole 51 matched with the first protrusion 411 in the rotation direction of the cover body 2. By increasing the length of the second protrusion 412 in the rotation direction of the cover body 2, the contact area between the second protrusion 412 and the clearance through hole 11 of the main housing 1 can be increased, so as to ensure that the main housing 1 can better support the trigger gear 3.

[0118] Second embodiment

[0119] According to the following Figures 16 to 19 The second embodiment of the present invention is described in detail.

[0120] In this embodiment, if Figures 16 to 19 As shown, the trigger gear 3 is provided with a linkage hole 52, and the cover body 2 is provided with a linkage protrusion 42, and the linkage protrusion 42 passes through the clearance hole 11 from the outside to the inside, and extends into the interior of the main shell 1 to be inserted into the linkage hole 52. The linkage hole 52 has a first end 521 and a second end 522, and the first end 521 and the second end 522 are spaced apart and distributed along the second direction b.

[0121] When the cover body 2 is in the closed position, the linkage protrusion 42 abuts against the second end 522 of the linkage hole 52 .

[0122] During the process of the cover body 2 rotating from the closed position to the open position, the linkage protrusion 42 rotates along the first direction a with the cover body 2. When the cover body 2 rotates by a certain angle (for example, 4°), the linkage protrusion 42 contacts the hole wall of the first end 521 of the linkage hole 52. Then, the cover body 2 continues to rotate, and the linkage protrusion 42 pushes the first end 521 to rotate along the first direction a, thereby driving the trigger gear 3 to rotate synchronously to trigger drug dispensing. When the cover body 2 rotates to the open position, the drug dispensing is completed, so that the container 100 is in a state ready for medication.

[0123] During the process of the cover body 2 rotating from the open position to the closed position, the linkage protrusion 42 rotates along with the cover body 2 in the second direction b. When the cover body 2 rotates by a certain angle (for example, 4°), the linkage protrusion 42 contacts the hole wall of the second end 522 of the linkage hole 52. Then, the cover body 2 continues to rotate so that the linkage protrusion 42 pushes the second end 522 to rotate in the second direction b, thereby driving the trigger gear 3 to rotate synchronously, and then driving the trigger gear 3 to reset.

[0124] In one embodiment, if Fig.19As shown, the clearance through hole 11 is a circular arc hole. Of course, the clearance through hole 11 is not limited to a circular arc hole, and can also be a circular hole.

[0125] Furthermore, if Figures 17 to 19 As shown, the linkage hole 52 is a circular arc hole, and the linkage protrusion 42 is a circular arc protrusion. The circular arc angle of the yielding through hole 11 is α, the circular arc angle of the linkage protrusion 42 is β, and the rotatable angle of the cover body 2 is θ, α=β+θ.

[0126] Furthermore, if Fig.17 and Fig.18 As shown, the number of linkage protrusions 42 is two, and the two linkage protrusions 42 are rotationally symmetrically distributed about the rotation axis of the cover body 2. The number of linkage protrusions 42, linkage holes 52 and clearance through holes 11 are the same and are arranged one-to-one. The two linkage protrusions 42 are respectively inserted into the two linkage holes 52 to improve the stability of the linkage between the cover body 2 and the trigger gear 3. Of course, the number of linkage protrusions 42 can be one, three or even more, and the number of linkage holes 52 and the clearance through holes 11 match the number of linkage protrusions 42 and the positions correspond one-to-one.

[0127] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present invention.

Claims

1. A quasi-sensor, characterized in that: The calibrator comprises: A main body shell, which is provided with a clearance through hole and a suction nozzle; A cover body, which is rotatably connected to the outside of the main shell; the cover body can rotate under external force to switch between a closed position for covering the suction nozzle and an open position for exposing the suction nozzle; a drug dispensing assembly located inside the main housing; A trigger gear, which is rotatably connected to the main housing and rotates to trigger the drug dispensing assembly to dispense the drug; Wherein, one of the cover body and the trigger gear is provided with a linkage protrusion, and the other is provided with a linkage hole; the linkage protrusion passes through the clearance through hole and is movably inserted into the linkage hole, and the length L1 of the linkage hole in the rotation direction of the cover body is greater than the length L2 of the linkage protrusion in the rotation direction; When the cover body rotates, the cover body first rotates until the linkage protrusion contacts the hole wall at one end of the linkage hole, and then, with the cooperation of the linkage protrusion and the linkage hole, the cover body drives the trigger gear to rotate synchronously, so that the trigger gear triggers the drug dispensing.

2. The calibrator according to claim 1, characterized in that: The trigger gear is provided with a linkage protrusion, and the cover body is provided with a linkage hole; In the process of the cover body rotating from the closed position to the open position, the cover body first rotates until the hole wall of the first end of the linkage hole contacts the linkage protrusion, and then the first end pushes the linkage protrusion to drive the trigger gear to rotate synchronously to trigger the drug dispensing, so that the drug dispenser is in a drug-preparing state; During the process of the cover body rotating from the open position to the closed position, the cover body first rotates until the hole wall of the second end of the linkage hole contacts the linkage protrusion, and then the second end pushes the linkage protrusion to drive the trigger gear to rotate synchronously, thereby driving the trigger gear to reset.

3. The calibrator according to claim 2, characterized in that: The clearance through hole is a round hole, the number of the linkage protrusions is at least two, at least one linkage protrusion abuts against the hole wall of the clearance through hole, and the linkage holes and the linkage protrusions are arranged in a one-to-one matching manner.

4. The calibrator according to claim 3, characterized in that: The linkage protrusions include at least two first protrusions and at least two second protrusions, all of the first protrusions are spaced apart and distributed along the rotation direction of the cover body, and all of the second protrusions are spaced apart and distributed along the rotation direction of the cover body; The circular motion track of the second protrusion surrounds the circular motion track of the first protrusion, and the second protrusion abuts against the hole wall of the clearance through hole.

5. The calibrator according to claim 1, characterized in that: The trigger gear is provided with a linkage hole, and the cover body is provided with a linkage protrusion; In the process of the cover body rotating from the closed position to the open position, the cover body first rotates until the linkage protrusion contacts the hole wall of the first end of the linkage hole, and then the linkage protrusion pushes the first end to drive the trigger gear to rotate synchronously to trigger the drug dispensing, so that the drug dispenser is in a drug-preparing state; During the process of the cover body rotating from the open position to the closed position, the cover body first rotates until the linkage protrusion contacts the hole wall of the second end of the linkage hole, and then the linkage protrusion pushes the second end to drive the trigger gear to rotate synchronously, thereby driving the trigger gear to reset.

6. The calibrator according to claim 5, characterized in that: The clearance through hole is a circular arc hole.

7. The calibrator according to claim 6, characterized in that: The linkage hole is an arc hole, and the linkage protrusion is an arc protrusion; the arc angle of the yielding through hole is α, the arc angle of the linkage protrusion is β, and the rotatable angle of the cover body is θ, α=β+θ.

8. The calibrator according to claim 6, characterized in that: The number of the linkage protrusions is at least two, and the number of the linkage protrusions, the linkage holes and the clearance through holes is the same and they are arranged in one-to-one correspondence.

9. The calibrator according to any one of claims 1 to 8, characterized in that: The drug dispensing assembly includes a main wheel, and the trigger gear is engaged with the main wheel; The trigger gear drives the main wheel to rotate to trigger the drug dispensing.

10. The calibrator according to any one of claims 1 to 8, characterized in that: When the cover body rotates to switch between the open position and the closed position, the cover body rotates 0.5°-20° first so that the linkage protrusion contacts the hole wall at one end of the linkage hole.

11. The calibrator according to any one of claims 1 to 8, characterized in that: At least two linkage protrusions are spaced apart and distributed along the rotation direction of the cover body, and the linkage holes are matched with the linkage protrusions one by one; And / or, the linkage hole is an arc hole, and the linkage protrusion is an arc protrusion.

12. The calibrator according to any one of claims 1 to 8, characterized in that: The main body shell is substantially circular, and the container further comprises a bracket, which is used to vertically store the main body shell on a placement surface.

13. The calibrator according to claim 12, characterized in that: The main body shell is vertically supported above the bracket, and a supporting surface is provided at the bottom of the bracket, and the supporting surface is used to support on the placement surface.

14. The calibrator according to claim 12, characterized in that: The calibrator further includes a fixed shell, which is connected to the outside of the main shell and at least partially surrounds the main shell; the bracket is connected to the fixed shell or is integrally formed with the fixed shell.

15. The calibrator according to claim 14, characterized in that: The fixed shell is buckled with the main shell.

16. The calibrator according to any one of claims 1 to 8, characterized in that: The cover body is provided with a locking buckle, and the main shell is provided with a locking buckle groove; When the cover is in the closed position, the locking buckle is buckled in the locking buckle groove.

17. The calibrator according to any one of claims 1 to 8, characterized in that: The main body shell cooperates with the cover body through limiting holes and limiting protrusions to limit the open position and the closed position of the cover body.

18. The calibrator according to claim 17, characterized in that: The limiting hole is arranged on the main shell and is arc-shaped, the limiting protrusion is arranged on the inner wall of the cover body, and the limiting protrusion extends into the limiting hole; the hole wall of the limiting hole is provided with a first clamping point and a second clamping point; When the cover body rotates, the limiting protrusion moves along the limiting hole; When the cover body is in the closed position, the first clamping point restricts the movement of the limiting protrusion to restrict the cover body from leaving the closed position; When the cover body is in the open position, the second clamping point restricts the movement of the limiting protrusion to restrict the cover body from leaving the open position.

19. The calibrator according to claim 18, characterized in that: When the cover body switches between the open position and the closed position, the limiting protrusion collides with the hole wall at one end of the limiting hole and emits a collision sound to prompt that the cover body has been rotated into place.

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