Deposit machine core capable of preventing rolled and folded banknotes from remaining

Abstract

The invention provides a deposit machine core capable of preventing rolled and folded banknotes from remaining, which comprises a banknote receiving impeller, a banknote falling turning plate, a baffle plate assembly, a linkage plate and a banknote falling driving mechanism, and is characterized in that the baffle plate assembly comprises a main baffle plate and an auxiliary baffle plate, one end of the linkage plate is hinged with the main baffle plate, and a strip-shaped connecting hole at the other end of the linkage plate is connected with the banknote falling turning plate through a sliding connecting pin; and the banknote falling driving mechanism drives the banknote falling turning plate to shift and swing. When the banknote falling turning plate swings upwards, a space capable of stably collecting banknotes is formed. When the banknote falling turning plate swings downwards, the baffle assembly is driven by the linkage plate to make contact with blades of the banknote receiving impeller, and residual rolled banknotes can be fed into a banknote collecting container only by continuously rotating the banknote receiving impeller. The banknote receiving and falling mechanism is compact and ingenious in structure, the functions of banknote receiving, banknote falling and residual rolled banknote cleaning are reliably achieved through linkage combination of the banknote falling turning plate, the linkage plate and the baffle assembly, it is ensured that all counted banknotes can fall into a banknote collecting container, the reliability of the banknote depositing function of the banknote depositing device is remarkably improved, and the use experience of a user is improved.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of March 26, 2025, an application number of 202510362515.4, and a title of "Deposit Mechanism". Technical Field

[0002] The present invention relates to the technical field of deposit devices, specifically a deposit mechanism for preventing folded and curled banknotes from remaining. Background Art

[0003] A deposit device is a device used to automatically count the number of banknotes and allows for optional deposit, generally with a counterfeit banknote identification function. In the cash handling work of some enterprises, institutions, and financial institutions, deposit devices have become indispensable equipment.

[0004] In general large-scale automatic deposit machines, such as the patent document with an application publication number of CN113706796A, a temporary storage module on a deposit mechanism and the deposit mechanism are disclosed. The deposit mechanism adopts a relatively complex structure, resulting in a large space occupied by the deposit device and inconvenient for flexible configuration in cash handling.

[0005] In the patent document with a publication number of CN110533148A, a banknote dispensing assembly of a banknote counter is disclosed. This patent provides a banknote depositing function for automatically depositing the banknotes after counting into a banknote collection container, providing a depositing function while maintaining the compact structure of the banknote counter. The specific technical solution of this patent is to set a banknote dispensing port at the bottom of the banknote collection trough, and a swingable banknote dispensing flap is set at the banknote dispensing port and driven by a banknote dispensing drive mechanism. During banknote counting, the banknote dispensing flap leans against the banknote dispensing port of the banknote collection trough. When it is necessary to deposit banknotes into the banknote collection container, the banknote dispensing flap is opened, and the banknotes fall from the banknote dispensing port. In the above patent technical solution, for relatively flat banknotes, after the banknote dispensing flap is opened, they can smoothly fall from the banknote dispensing port at the bottom of the collection trough; but for banknotes that are folded or curled severely before counting, they may resume the folded and curled state as shown in the attachment Figure 1 in the banknote collection trough 91. Such folded and curled banknotes 92 may not be able to smoothly fall from the banknote dispensing port under their own weight, resulting in errors in the number of deposited banknotes. Therefore, a technical solution that can enable folded and curled banknotes to also smoothly fall into the banknote collection container needs to be proposed. Summary of the Invention

[0006] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a deposit mechanism for preventing folded and curled banknotes from remaining.

[0007] To achieve the above purpose, the technical solution adopted by the present invention to solve its technical problems is: a deposit mechanism for preventing folded and curled banknotes from remaining, including:

[0008] The bill receiving impeller is arranged at the end of the bill transmission channel of the deposit device. A bill taking opening is provided on the front side of the deposit device housing where the bill receiving impeller is located, and a downward bill dropping opening is provided directly below the front part of the bill receiving impeller in the deposit device housing;

[0009] The bill dropping flap, its upper end is pivotally connected between the left side plate and the right side plate of the deposit device housing;

[0010] The baffle assembly, which includes a main baffle and a sub-baffle. The lower end of the main baffle is pivotally connected between the left side plate and the right side plate of the deposit device housing. The lower end of the sub-baffle is rotatably connected to the upper end of the main baffle. A flat limiting structure for restricting the two to a flat state is also provided between the main baffle and the sub-baffle;

[0011] The linkage plate, one end of which has an elongated connection hole. The end of the linkage plate far from the elongated connection hole is hinged to one side of the main baffle. One side of the bill dropping flap is connected to the elongated connection hole of the linkage plate through a sliding connection pin. The sliding connection pin penetrates through the elongated connection hole and can slide along the length direction of the elongated connection hole;

[0012] The bill dropping driving mechanism is used to drive the bill dropping flap to swing and change positions between a first angular position and a second angular position;

[0013] When the bill dropping flap is in the first angular position, the lower end of the bill dropping flap abuts against the lower end of the main baffle. Driven by the linkage plate, the main baffle and the sub-baffle of the baffle assembly are located on the side close to the bill taking opening, and there is a spacing space for collecting bills between the bill receiving impeller and the baffle assembly;

[0014] When the bill dropping flap is in the second angular position, a spacing space for allowing the remaining bills to fall is formed between the bill dropping flap and the baffle assembly. Driven by the linkage plate, the bill contact surface of the baffle assembly contacts the bill receiving impeller;

[0015] During the process of the bill dropping flap swinging and changing positions from the first angular position to the second angular position, the sliding connection pin moves from one end close to the middle position of the linkage plate to the end far from the middle position of the linkage plate in the elongated connection hole. When it just starts to contact the end wall of the elongated connection hole, that is, when the bill dropping flap is just about to pull the baffle assembly through the linkage plate, the bill contact surface of the bill dropping flap is obliquely downward from top to bottom and the angle between it and the horizontal plane is 75° - 80°.

[0016] In the technical solution of the present invention, when the bill dropping flap is in the first angular position, a space capable of stably collecting bills can be formed, and according to the usage requirements, the sorted bills can be taken out from the bill taking port in this state. When it is necessary to store the sorted bills from the bill dropping port into the bill collecting container below the depositing device, during the process of the bill dropping flap being displaced from the first angular position to the second angular position driven by the bill dropping drive mechanism, the bill dropping flap opens downward, and most of the bills will fall into the bill collecting container under their own weight; in order to prevent the residue of a small number of folded bills, when the bill dropping flap swings to the second angular position, driven by the linkage plate, the baffle assembly contacts the blades of the bill receiving impeller, and only by continuing to rotate the bill receiving impeller can the residual folded bills be sent into the bill collecting container. Through the linkage combination of the bill dropping flap, the linkage plate and the baffle assembly, the present invention reliably realizes the functions of receiving bills, dropping bills, and cleaning the residual folded bills, ensures that all the sorted bills can fall into the bill collecting container, significantly improves the reliability of the bill depositing function of the depositing device, and enhances the user experience. The bill depositing mechanism core of the present invention is compact and ingenious, and can still maintain the feature of the small size of the device, which is convenient for use.

[0017] Further, when the bill dropping flap is in the first angular position, the bill contact surface of the bill dropping flap is obliquely downward from top to bottom and the angle between it and the horizontal plane is 45°, and the bill contact surface of the baffle assembly is obliquely upward from bottom to top and the angle between it and the horizontal plane is 120°.

[0018] Adopting the above preferred solution helps a large number of collected bills to be closely adjacent to each other in sequence, maintain a stable obliquely erected state, and facilitate bill taking.

[0019] Further, when the bill dropping flap is in the second angular position, the bill contact surface of the bill dropping flap is vertically downward from top to bottom, and the bill contact surface of the baffle assembly is obliquely upward from bottom to top and the angle between it and the horizontal plane is less than 90°.

[0020] Adopting the above preferred solution helps the possibly folded residual bills to smoothly fall into the bill collecting container.

[0021] Further, it further includes a shielding cover assembly, the shielding cover assembly includes an arc-shaped shielding cover, a left ear plate and a right ear plate, the left ear plate and the right ear plate are respectively fixedly connected to the left side and the right side of the arc-shaped shielding cover, and the ends of the left ear plate and the right ear plate far away from the arc-shaped shielding cover are pivotally connected to the depositing device frame; it further includes an opening and closing drive mechanism for driving the shielding cover assembly to swing, and driven by the opening and closing drive mechanism, the arc-shaped shielding cover is displaced between the state of completely shielding the bill taking port and the state of completely disengaging from the bill taking port.

[0022] Adopting the above preferred solution, the shielding cover assembly can close the bill taking port during bill counting, prevent external interference with bill counting, and improve safety at the same time.

[0023] Further, an upper baffle is provided above the banknote taking opening. An outer baffle edge that bends downward is provided at the outer end of the upper baffle close to the banknote taking opening. When the arc-shaped shielding cover completely shields the banknote taking opening, the top of the arc-shaped shielding cover is located inside the outer baffle edge.

[0024] Adopting the above preferred solution can prevent the arc-shaped shielding cover from being manually pulled open from above.

[0025] Further, a lower baffle is provided below the banknote taking opening. The lower baffle includes an inclined portion and a horizontal portion that are arranged at an angle. When the banknote dropping flap is in the receiving state at the first angle position, the back surface of the main baffle of the baffle assembly abuts against the inclined portion of the lower baffle. When the sub-baffle is folded outward to the horizontal state, the sub-baffle penetrates through the banknote taking opening, and the back surface of the sub-baffle abuts against the horizontal portion of the lower baffle.

[0026] Adopting the above preferred solution, the lower baffle plays a supporting role for the baffle assembly and can keep the baffle assembly in a stable angular state. When it is necessary to directly take banknotes from the banknote taking opening, the sub-baffle is folded outward to the horizontal state, which is convenient for taking banknotes out of the banknote taking opening.

[0027] Further, when the main baffle and the sub-baffle are in the straight state, the width of the banknote contact surface formed by the main baffle and the sub-baffle is 5-10 mm wider than the width of the largest-size banknote.

[0028] Adopting the above preferred solution can better collect and regulate the sorted banknotes and keep the banknotes neat.

[0029] Further, the width of the banknote contact surface of the main baffle is greater than 1 / 2 of the width of the largest-size banknote.

[0030] Adopting the above preferred solution ensures that the collected banknotes can still maintain a stable obliquely standing state after the sub-baffle is turned outward.

[0031] Further, a section of inwardly bent portion is further provided on the upper part of the sub-baffle. The angle formed by the inner surface of the inwardly bent portion and the banknote contact surface of the sub-baffle is less than 180°. When the banknote dropping flap is in the receiving state at the first angle position and the arc-shaped shielding cover completely shields the banknote taking opening, the minimum gap between the top end of the inwardly bent portion of the sub-baffle and the inner wall surface of the arc-shaped shielding cover is 0.1 mm - 2 mm, and the distance between the top end of the inwardly bent portion and the upper baffle is 20 mm - 30 mm.

[0032] With the above preferred solution, a small gap is maintained between the auxiliary baffle and the inner wall surface of the arc-shaped shielding cover, which can prevent the banknotes flying out during the banknote counting process from falling outside the auxiliary baffle through the gap. At the same time, when the auxiliary baffle is still turned outwards after the current banknote taking, while the arc-shaped shielding cover automatically closes, it can drive the auxiliary baffle to turn inwards. The small gap can ensure that the auxiliary baffle turns inwards to the magnetic force acting range of the magnetic component, so that the auxiliary baffle is in a straight state with the main baffle after turning inwards. A distance of 20 mm - 30 mm is set between the top of the inward bending part and the upper baffle, which can facilitate the finger of the banknote taker to reach into the inner side of the auxiliary baffle to turn the auxiliary baffle outwards.

[0033] Further, at least two downwardly hanging hanging chains are provided on the upper baffle, and the hanging chains are formed by connecting a plurality of ring bodies in series; when the banknote dropping flap is in the banknote receiving state at the first angle position and the main baffle and the auxiliary baffle are in a straight state, the hanging chains extend downwards to the inner side of the inward bending part of the auxiliary baffle and are lower than the top of the inward bending part, and the length by which the lower end of the hanging chain is lower than the top of the inward bending part is less than the horizontal distance between the hanging chain and the top of the inward bending part in the hanging state.

[0034] With the above preferred solution, the ingenious design of the hanging chain neither hinders the flipping action of the baffle assembly nor can effectively prevent the banknotes that may fly out during the banknote counting process from running from the upper gap of the auxiliary baffle to the outside of the auxiliary baffle and being unable to return to the banknote collection space. The control of the hanging length of the hanging chain and the horizontal distance between the hanging chain and the auxiliary baffle can ensure that after the baffle assembly turns inwards and then returns, the hanging chain can return to the inner side of the inward bending part.

[0035] Further, a light detection sensor for detecting whether banknotes are attached to the banknote contact surface of the main baffle is installed on the back of the inclined part of the lower baffle, and a through hole for the light path of the light detection sensor to pass through is provided on the main baffle in the front-back direction or the main baffle is made of a transparent material.

[0036] With the above preferred solution, it is possible to timely detect whether there are residual banknotes in the banknote collection space. After detecting the presence of banknotes, the banknote dropping driving mechanism can drive the banknote dropping flap and the baffle assembly to perform flipping actions repeatedly to clean the residual banknotes into the banknote collection space. If banknotes are still detected after multiple flipping and cleaning actions, an alarm prompt is issued for timely manual inspection.

[0037] Further, the flat limiting structure includes a left protruding portion protruding toward the main baffle on the left side of the lower end of the auxiliary baffle, a right protruding portion protruding toward the main baffle on the right side of the lower end of the auxiliary baffle, a left groove body at the left side of the upper end of the main baffle, and a right groove body at the right side of the upper end of the main baffle. First magnetic members are provided in both the left groove body and the right groove body, and second magnetic members are provided on the back surfaces of the left protruding portion and the right protruding portion. After the first magnetic members and the second magnetic members are attracted to each other, the main baffle and the auxiliary baffle are in a flat state.

[0038] With the above preferred solution, when taking banknotes, after the auxiliary baffle is turned outwards, the two magnetic members are out of the magnetic attraction range, and the auxiliary baffle can be freely turned outwards to the horizontal state without hindering the banknote-taking action. After the auxiliary baffle is turned inwards and enters the magnetic attraction range of the two magnetic members, the baffle and the auxiliary baffle can be smoothly in a flat state.

[0039] Further, a middle protruding portion protruding toward the main baffle is provided in the middle of the lower end of the auxiliary baffle, and the protruding amounts of the left protruding portion and the right protruding portion are both more than 10 mm more than the protruding amount of the middle protruding portion.

[0040] With the above preferred solution, when taking banknotes, after the auxiliary baffle is turned outwards, the left protruding portion and the right protruding portion can push the collected banknotes forward, so that a gap will appear between the banknotes and the middle position of the auxiliary baffle, which is convenient for the banknote-taker to insert his fingers and is more convenient for grasping the banknotes.

[0041] Further, ribs extending into the other side and grooves for accommodating the ribs extending from the other side are alternately provided at the joint position between the upper end of the main baffle and the lower end of the auxiliary baffle, and ribs extending into the other side and grooves for accommodating the ribs extending from the other side are also alternately provided at the joint position between the lower end of the banknote-dropping flap and the lower end of the main baffle.

[0042] With the above preferred solution, it can prevent banknotes from entering the joint gap between the two components and prevent banknote jamming.

[0043] Further, the banknote receiving impeller includes two impellers arranged in parallel at intervals. Below the banknote dropping flap, there is a blowing hole corresponding to each impeller. Inside the deposit device frame below the banknote receiving impeller, there is an inclined plane block. On the inclined plane of the inclined plane block, there are guide boxes that can move along the inclined plane and are respectively installed at positions directly below the two impellers. The top surface of the guide box has an arc surface matching the outer contour of the impeller. On the arc surface, there are a plurality of concave semi-ellipsoidal air collecting grooves. The bottom of each air collecting groove is collected to the air outlet pipe through an air guiding pipe. The mouth of the air outlet pipe faces the blowing hole of the banknote dropping flap. When the banknote dropping flap swings down to the second angle position, the guide box moves backward along the inclined plane block and rises, so that the blades of each impeller of the banknote receiving impeller contact the arc surface of the corresponding guide box. After the banknote dropping flap swings away from the second angle position, the guide box moves forward along the inclined plane block and descends, so that the blades of each impeller of the banknote receiving impeller are separated from the arc surface of the corresponding guide box.

[0044] With the above preferred solution, after the banknote dropping flap flips to the second angle position, while the banknote receiving impeller rotates to scrape the banknote contact surface of the baffle assembly, the blades contact the arc surface of the guide box, which will generate an air flow in the semi-ellipsoidal air collecting grooves. The air flow is led to the blowing hole of the banknote dropping flap through the air guiding pipe and the air outlet pipe, and can blow off the residual banknotes that may adhere to the surface of the banknote dropping flap, further ensuring that all banknotes can smoothly fall into the banknote collection container and ensuring the accurate number of deposited banknotes. Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0046] Figure 1 It is a schematic diagram of the residual banknotes in the banknote collection slot in the rolled-up state in the prior art.

[0047] Figure 2 It is a schematic diagram of the structure of the deposit device.

[0048] Figure 3 It is a cross-sectional view of the deposit device.

[0049] Figure 4 It is a cross-sectional view of the deposit mechanism of the banknote dropping flap in the first angle position state.

[0050] Figure 5 It is a partial schematic diagram of the deposit mechanism of the banknote dropping flap in the first angle position state.

[0051] Figure 6 It is a cross-sectional view of the banknote dropping flap of the deposit mechanism in the state of being in the third angle position.

[0052] Figure 7 It is a partial schematic diagram of the deposit machine movement with the banknote dropping flap in the third angle position.

[0053] Figure 8 It is a cross-sectional view of the banknote dropping flap of the deposit mechanism in the second angle position state.

[0054] Figure 9 It is a partial schematic diagram of a deposit machine movement with the banknote dropping flap in a second angle position.

[0055] Figure 10 It is a structural schematic diagram of a banknote receiving impeller.

[0056] Figure 11 It is a structural schematic diagram of a banknote falling flap.

[0057] Figure 12 It is a schematic diagram showing that the main baffle and the auxiliary baffle in the baffle assembly are in a straight state.

[0058] Figure 13 It is a schematic diagram showing that the auxiliary baffle in the baffle assembly is in an outward-turned state.

[0059] Figure 14 It is a structural diagram of the main baffle.

[0060] Figure 15 It is a structural schematic diagram of the auxiliary baffle.

[0061] Figure 16 It is a structural diagram of the linkage board.

[0062] Figure 17 It is a structural schematic diagram of an implementation method of a deposit device.

[0063] Figure 18 It is a partial schematic diagram of the deposit machine movement with the arc-shaped shield covering closing the banknote withdrawal port and the auxiliary baffle in a straight state.

[0064] Figure 19 It is a partial schematic diagram of the deposit machine movement with the arc-shaped shielding cover separated from the banknote withdrawal port and the auxiliary baffle in the outward-turned state.

[0065] Figure 20 It is a structural schematic diagram of a guide box arranged below a banknote receiving impeller of a deposit device.

[0066] Figure 21 It is a partial schematic diagram of a state in which the banknote falling flap is at a second angle position and the arc surface of the guide box is in contact with the blades of the banknote receiving impeller.

[0067] Figure 22It is a partial schematic diagram after the banknote dropping flap is in the third angular position and the arc surface of the diversion box is separated from the blades of the banknote receiving impeller.

[0068] The names of the corresponding components represented by the numbers and letters in the figure:

[0069] 10 - Banknote receiving impeller; 11 - Impeller disc body; 12 - Blade; 20 - Banknote dropping flap; 201 - Rib position; 202 - Groove body; 203 - Air blowing hole; 21 - Sliding connection pin; 22 - Banknote dropping drive mechanism; 221 - Driving toothed transmission wheel; 222 - Driven toothed transmission wheel; 223 - Toothed transmission belt; 224 - Detection rod; 225 - Photoelectric sensor; 30 - Baffle assembly; 31 - Main baffle; 311 - Left groove body; 312 - Right groove body; 313 - First magnetic attracting member; 314 - Rib position; 315 - Groove body; 316 - Rib position; 317 - Groove body; 32 - Sub - baffle; 321 - Left protruding part; 322 - Right protruding part; 323 - Second magnetic attracting member; 324 - Inward bending part; 325 - Rib position; 326 - Groove body; 327 - Middle protruding part; 40 - Linking plate; 41 - Long - strip connecting hole; 411 - First end; 412 - Second end; 51 - Arc - shaped shielding cover; 52 - Left ear plate; 53 - Opening and closing drive mechanism; 61 - Upper baffle; 611 - Outer retaining edge; 62 - Hanging chain; 63 - Lower baffle; 631 - Inclined part; 632 - Horizontal part; 64 - Light detection sensor; 70 - Diversion box; 71 - Air collecting groove; 72 - Air duct; 73 - Air outlet duct; 74 - Inclined plane block; 80 - Deposit device frame body; 801 - Left side plate; 802 - Right side plate; 803 - Banknote taking port; 804 - Banknote dropping port; 81 - Banknote feeding bin; 82 - Banknote transmission channel; 83 - Counterfeit banknote detection module; 84 - Genuine and counterfeit banknote channel switching mechanism; 85 - Counterfeit banknote collection bin; 91 - Banknote collection groove; 92 - Banknotes in a rolled - up state. Specific embodiments

[0070] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0071] As Figure 2 、 Figure 3As shown in the figure, the deposit device includes a bill inlet bin 81, a bill transmission channel 82, a counterfeit bill detection module 83, a genuine and counterfeit bill channel switching mechanism 84, a counterfeit bill collection bin 85, and a deposit movement for collecting genuine bills. The bills to be counted are sequentially fed into the bill transmission channel 82 from the bill inlet bin 81, and are authenticated for authenticity at the position of the counterfeit bill detection module 83. After authentication, through the commutation of the genuine and counterfeit bill channel switching mechanism 84, the counterfeit bills are fed into the counterfeit bill collection bin 85, and the genuine bills are continuously transmitted to the end of the bill transmission channel and collected by the deposit movement. In order to solve the technical problems presented in the background art, the present invention proposes a technical solution for improving the deposit movement.

[0072] As Figures 2 - 17 shown, an embodiment of the present invention is: a deposit movement, including:

[0073] A bill receiving impeller 10, which is arranged at the end of the bill transmission channel of the deposit device. There is a bill taking port 803 on the front side of the deposit device housing 80 where the bill receiving impeller 10 is located, and a downward bill dropping port 804 is provided directly below the front part of the deposit device housing 80 where the bill receiving impeller 10 is located;

[0074] A bill dropping flap 20, the upper end of which is pivotally connected between the left side plate 801 and the right side plate 802 of the deposit device housing 80;

[0075] A baffle assembly 30, which includes a main baffle 31 and a sub-baffle 32. The lower end of the main baffle 31 is pivotally connected between the left side plate 801 and the right side plate 802 of the deposit device housing 80. The lower end of the sub-baffle 32 is rotatably connected to the upper end of the main baffle 31. A straight limit structure for restricting the two to a straight state is also provided between the main baffle 31 and the sub-baffle 32. The straight state means that the bill contact surface of the sub-baffle 32 and the bill contact surface of the main baffle 31 are in the same plane state ( Figure 12 the state shown in the figure). A first magnetic attracting member 313 is also provided on the straight limit structure of the main baffle 31, and a second magnetic attracting member 323 is provided on the straight limit structure of the sub-baffle 32. A magnetic adsorption force can be generated between the first magnetic attracting member 313 and the second magnetic attracting member 323;

[0076] A linkage plate 40, one end of which has an elongated connection hole 41. The end of the linkage plate 40 away from the elongated connection hole 41 is hinged to one side of the main baffle 31. One side of the bill dropping flap 20 is connected to the elongated connection hole 41 of the linkage plate through a sliding connection pin 21. The sliding connection pin 21 passes through the elongated connection hole 41 and can slide along the length direction of the elongated connection hole;

[0077] A bill dropping driving mechanism 22, which is used to drive the bill dropping flap 20 to swing between a first angular position and a second angular position;

[0078] When the bill dropping flap 20 is in the first angular position ( Figure 4and Figure 5 In the state shown in Figure 5 , the bill dropping flap 20 and the baffle assembly 30 are combined into a bill receiving state for receiving and collecting bills. The lower end of the bill dropping flap 20 abuts against the lower end of the main baffle 31, and the sliding connection pin 21 abuts against the first end 411 of the long strip-shaped connection hole 41 near the middle position of the linkage plate. Driven by the linkage plate 40, the baffle assembly 30 is located on the side close to the bill taking port, and there is a spacing space for collecting bills between the bill receiving impeller 10 and the baffle assembly 30;

[0079] When the bill dropping flap is in the second angular position ( Figure 8 and Figure 9 In the state shown in Figure 9 ), the bill dropping flap 20 and the baffle assembly 30 are combined into a state for cleaning the remaining bills to the bill collection container below the bill dropping port. A spacing space for the remaining bills to fall is formed between the bill dropping flap 20 and the baffle assembly 30. Driven by the linkage plate 40, the bill contact surface of the baffle assembly 30 contacts the bill receiving impeller 10. After the bill receiving impeller 10 starts to rotate, the remaining bills enter the bill collection container through the bill dropping port.

[0080] As Figure 16 shown, one end of the long strip-shaped connection hole 41 near the middle position of the linkage plate is the first end 411, and the end of the long strip-shaped connection hole 41 far from the middle position of the linkage plate is the second end 412. As Figure 6 、 Figure 7 shown, during the process of the bill dropping flap 20 swinging from the first angular position to the second angular position, the sliding connection pin 21 moves from the first end 411 to the second end 412 in the long strip-shaped connection hole 41. When it just abuts against the end wall of the second end 412, taking the position where the bill dropping flap 20 is located at this time as the third angular position ( Figure 6 and Figure 7 In the state shown in Figure 7 ), the bill dropping flap 20 and the baffle assembly 30 are combined into a bill dropping state for dropping bills to the bill collection container below the bill dropping port. The lower end of the bill dropping flap 20 is separated from the lower end of the main baffle 31, and a spacing space for bills to fall is formed between the two. A spacing space for bills to fall is maintained between the baffle assembly 30 and the bill receiving impeller 10. When the bill dropping flap 20 continues to swing from the third angular position to the second angular position, the linkage plate 40 pulls the baffle assembly 30 to gradually approach the bill receiving impeller 10.

[0081] The beneficial effects of adopting the above technical solutions are as follows: Through the linkage combination of the bill dropping flap, the linkage plate and the baffle assembly, the functions of receiving bills, dropping bills, and cleaning the remaining folded bills are reliably realized, ensuring that all the counted bills can fall into the bill collection container, significantly improving the reliability of the bill storage function of the deposit device, and enhancing the user experience.

[0082] As Figure 5As shown, in some other embodiments of the present invention, when the bill dropping flap 20 is in the first angular position, the bill contact surface of the bill dropping flap 20 is arranged obliquely downward from top to bottom, and the angle α1 between it and the horizontal plane is 45°. The bill contact surface of the baffle assembly 30 is arranged obliquely upward from bottom to top, and the angle β1 between it and the horizontal plane is 120°. The beneficial effect of adopting the above technical solution is that it helps a large number of collected bills to be closely adjacent to each other in sequence, maintain a stable obliquely erected state, and facilitate bill taking.

[0083] As Figure 9 shown, in some other embodiments of the present invention, when the bill dropping flap 20 is in the second angular position, the bill contact surface of the bill dropping flap 20 is arranged vertically downward from top to bottom, the angle α2 between it and the horizontal plane is 90°, and the bill contact surface of the baffle assembly 30 is arranged obliquely upward from bottom to top, and the angle β2 between it and the horizontal plane is less than 90°. The beneficial effect of adopting the above technical solution is that it helps the possibly curled and residual bills to smoothly fall into the bill collection container.

[0084] As Figure 7 shown, in some other embodiments of the present invention, when the bill dropping flap 20 is in the third angular position, the bill contact surface of the bill dropping flap 20 is arranged obliquely downward from top to bottom, and the angle α3 between it and the horizontal plane is 75° - 80°, and the bill contact surface of the baffle assembly 30 is arranged obliquely upward from bottom to top, and the angle β3 between it and the horizontal plane is 120°. The beneficial effect of adopting the above technical solution is that after the bill dropping flap is opened, the previous spacing is maintained between the baffle assembly and the bill receiving impeller, ensuring that the regularly collected bills can quickly and smoothly fall into the bill collection container.

[0085] In some other embodiments of the present invention, the bill dropping flap 20 is fixedly connected to its pivot shaft, and the pivot shaft is installed on the side plate of the deposit device housing through a bearing. The specific structural form of the bill dropping drive mechanism is not limited, and it can be selected from the drive mechanisms that can achieve swinging in the prior art. For example, the bill dropping drive mechanism can directly adopt a reduction motor and be directly connected to the pivot shaft of the bill dropping flap through a coupling. As Figure 17As shown, in order to facilitate the spatial layout of the banknote dropping drive mechanism on the frame of the deposit device, the banknote dropping drive mechanism can also adopt the structural form of a motor, a speed reduction transmission mechanism, and a toothed transmission belt. Specifically, the speed reduction transmission mechanism adopts a worm and worm gear speed reduction transmission mechanism. The output shaft of the motor is in transmission connection with the input end of the worm and worm gear speed reduction transmission mechanism. A driving toothed transmission wheel 221 is installed on the output shaft of the worm and worm gear speed reduction transmission mechanism. A driven toothed transmission wheel 222 is installed at the pivot end of the banknote dropping flap. A toothed transmission belt 223 is wound between the driving toothed transmission wheel 221 and the driven toothed transmission wheel 222. In order to achieve precise control of the swing angle of the banknote dropping flap, a detection rod 224 for blocking the optical path of the sensor is installed at the pivot end of the banknote dropping flap. Photoelectric sensors 225 are respectively arranged on the frame of the deposit device at the swing angle boundary positions of the detection rod 224. When the detection rod 224 blocks the optical path of the photoelectric sensor 225, it indicates that the banknote dropping flap has reached the set swing angle position.

[0086] As Figure 17 shown, in some other embodiments of the present invention, it further includes a shielding cover assembly. The shielding cover assembly includes an arc-shaped shielding cover 51, a left ear plate 52, and a right ear plate. The left ear plate 52 and the right ear plate are respectively fixedly connected to the left side and the right side of the arc-shaped shielding cover 51. The ends of the left ear plate 52 and the right ear plate away from the arc-shaped shielding cover are pivotally connected to the frame of the deposit device. It further includes an opening and closing drive mechanism 53 for driving the shielding cover assembly to swing. Driven by the opening and closing drive mechanism 53, the arc-shaped shielding cover 51 is switched between the state of completely shielding the banknote taking opening and the state of completely disengaging from the banknote taking opening. The beneficial effect of adopting the above technical solution is that the shielding cover assembly can close the banknote taking opening during banknote counting, prevent interference from the outside to banknote counting, and improve safety at the same time.

[0087] In some other embodiments of the present invention, the specific structural form of the opening and closing drive mechanism for driving the shielding cover assembly to swing is not limited, and it can be selected from the drive mechanisms that can achieve swinging in the prior art. For example, a reduction motor can be directly used to drive the pivot shaft fixedly connected to the left ear plate and the right ear plate to achieve the swing of the shielding cover assembly, or a reduction motor can be used in cooperation with a transmission mechanism to drive the pivot shaft to rotate to achieve the swing of the shielding cover assembly. The specific structural form will not be elaborated here.

[0088] As Figure 18 、 Figure 19 shown, in some other embodiments of the present invention, an upper baffle 61 is provided above the banknote taking opening 803. The outer end of the upper baffle 61 close to the banknote taking opening is provided with a downwardly bent outer edge 611. When the arc-shaped shielding cover 51 completely shields the banknote taking opening 803, the top of the arc-shaped shielding cover 51 is located inside the outer edge 611. The beneficial effect of adopting the above technical solution is that it can prevent the arc-shaped shielding cover from being manually pulled open from above.

[0089] As Figure 18 、Figure 19 As shown, in some other embodiments of the present invention, a lower baffle 63 is provided below the banknote taking port 803. The lower baffle 63 includes an inclined portion 631 and a horizontal portion 632 which are arranged at an angle. When the dropping banknote flap 20 is in the banknote receiving state at the first angle position, the back surface of the main baffle 31 of the baffle assembly abuts against the inclined portion 631 of the lower baffle. When the auxiliary baffle 32 is folded outwards to the horizontal state, the auxiliary baffle 32 penetrates through the banknote taking port 803, and the back surface of the auxiliary baffle 32 abuts against the horizontal portion 632 of the lower baffle. The beneficial effect of adopting the above technical solution is that the lower baffle plays a supporting role for the baffle assembly, and can keep the baffle assembly in a stable angular state. When it is necessary to directly take banknotes from the banknote taking port, the auxiliary baffle is folded outwards to the horizontal state, which is convenient for taking out banknotes from the banknote taking port.

[0090] As Figure 12 shown, in some other embodiments of the present invention, when the main baffle 31 and the auxiliary baffle 32 are in the straight state, the width b1 of the banknote contact surface formed by the main baffle 31 and the auxiliary baffle 32 is 5-10 mm wider than the width of the largest-size banknote. The beneficial effect of adopting the above technical solution is that it can better collect and regulate the counted banknotes and keep the banknotes neat.

[0091] As Figure 14 shown, in some other embodiments of the present invention, the width b2 of the banknote contact surface of the main baffle 31 is slightly larger than 1 / 2 of the width of the largest-size banknote. The beneficial effect of adopting the above technical solution is that it ensures that the collected banknotes can still maintain a stable obliquely standing state after the auxiliary baffle is turned outwards.

[0092] As Figure 14 、 Figure 15 shown, in some other embodiments of the present invention, the straight limit structure includes a left protruding portion 321 protruding towards the side of the main baffle at the left lower end of the auxiliary baffle 32, a right protruding portion 322 protruding towards the side of the main baffle at the right lower end of the auxiliary baffle 32, a left groove body 311 at the left upper end of the main baffle 31, and a right groove body 312 at the right upper end of the main baffle 31. First magnetic components 313 are arranged in both the left groove body 311 and the right groove body 312, and second magnetic components 323 are arranged on the back surfaces of the left protruding portion 321 and the right protruding portion 322. After the first magnetic component 313 and the second magnetic component 323 are attracted to each other, the main baffle 31 and the auxiliary baffle 32 are in the straight state. The specific matching form of the first magnetic component 313 and the second magnetic component 323 is not limited. Two magnets with opposite polarities can be used, or one can use a magnet and the other can use an iron sheet attracted to the magnet.

[0093] As Figure 15As shown, in some other embodiments of the present invention, a middle protruding portion 327 protruding towards the main baffle side is provided in the middle of the lower end of the auxiliary baffle 32. The length b3 by which the protruding amounts of the left protruding portion 321 and the right protruding portion 322 are more than the protruding amount of the middle protruding portion 327 is 10 mm or more. The beneficial effect of adopting the above technical solution is that when taking banknotes, after the auxiliary baffle is turned outwards, the left protruding portion and the right protruding portion can push the collected banknotes forward, so that a gap will appear between the banknotes and the middle position of the auxiliary baffle, facilitating the taker's fingers to reach into the gap and making it more convenient to grab the banknotes.

[0094] As Figure 18 shown, in some other embodiments of the present invention, an inwardly bent portion 324 is further provided on the upper part of the auxiliary baffle 32. The angle formed by the inner surface of the inwardly bent portion 324 and the banknote contact surface of the auxiliary baffle 32 is less than 180°; when the dropping flap 20 is in the banknote receiving state at the first angle position and the arc-shaped shielding cover 51 completely shields the banknote taking opening, the minimum gap b4 between the top end of the inwardly bent portion 324 of the auxiliary baffle and the inner wall surface of the arc-shaped shielding cover 51 is 0.1 mm - 2 mm, and the minimum distance b5 between the top end of the inwardly bent portion 324 and the upper baffle 61 is 20 mm - 30 mm. The beneficial effect of adopting the above technical solution is that keeping a small gap b4 between the auxiliary baffle and the inner wall surface of the arc-shaped shielding cover can prevent the banknotes flying out during the banknote counting process from falling outside the auxiliary baffle through the gap. At the same time, when the auxiliary baffle is still turned outwards after the previous banknote taking, when the arc-shaped shielding cover automatically closes, it can drive the auxiliary baffle to turn inwards. The small gap can ensure that the auxiliary baffle turns inwards to the magnetic force acting range of the magnetic attracting member, so that the auxiliary baffle is in a flat state with the main baffle after turning inwards. Setting a distance b5 of 20 mm - 30 mm between the top end of the inwardly bent portion and the upper baffle can facilitate the taker's fingers to reach into the inner side of the auxiliary baffle to turn the auxiliary baffle outwards.

[0095] As Figure 18 shown, in some other embodiments of the present invention, at least two downwardly hanging hanging chains 62 are further provided on the upper baffle 61. The hanging chains 62 are formed by connecting a plurality of ring bodies in series; when the dropping flap 20 is in the banknote receiving state at the first angle position and the main baffle 31 and the auxiliary baffle 32 are in a flat state, the hanging chains 62 extend downwards to the inner side of the inwardly bent portion 324 of the auxiliary baffle and are lower than the top of the inwardly bent portion. The length b6 by which the lower end of the hanging chain 62 is lower than the top of the inwardly bent portion 324 is less than the horizontal distance b7 between the hanging chain 62 and the top of the inwardly bent portion 324 in the hanging state. The beneficial effect of adopting the above technical solution is that the ingenious design of the hanging chain neither hinders the flipping movement of the baffle assembly nor can effectively prevent the banknotes that may fly out during the banknote counting process from running outside the auxiliary baffle through the upper gap of the auxiliary baffle and being unable to return to the banknote collection space. Controlling the hanging length of the hanging chain and the horizontal distance between the hanging chain and the auxiliary baffle can ensure that after the baffle assembly turns inwards and then returns, the hanging chain can return to the inner side of the inwardly bent portion.

[0096] As Figure 18 shown, in some other embodiments of the present invention, a light detection sensor 64 for detecting whether banknotes are attached to the banknote contact surface of the main baffle 31 is installed on the back of the inclined portion 631 of the lower baffle 63. A through hole for the optical path of the light detection sensor 64 to pass through is provided in the main baffle 31 in a front-rear through manner, or the main baffle 31 is made of a transparent material. The beneficial effect of adopting the above technical solution is that it can timely detect whether there are residual banknotes in the banknote collection space. After detecting the presence of banknotes, the banknote dropping drive mechanism can drive the banknote dropping flap and the baffle assembly to perform flipping actions repeatedly to clean the residual banknotes into the banknote collection space. If banknotes are still detected after multiple flipping and cleaning actions, an alarm prompt is issued for timely manual inspection.

[0097] As Figure 11 , Figure 12 , Figure 14 shown, in some other embodiments of the present invention, a plurality of rib positions 316 extending into the lower groove body 326 of the sub-baffle and a plurality of groove bodies 317 for accommodating the lower rib positions 325 of the sub-baffle are provided at intervals at the upper end of the main baffle 31. A plurality of rib positions 201 extending into the lower groove body 315 of the main baffle and a plurality of groove bodies 202 for accommodating the lower rib positions 314 of the main baffle are provided at intervals at the lower end of the banknote dropping flap 20. The beneficial effect of adopting the above technical solution is that it can prevent banknotes from entering the intersection gap between the two components and prevent banknote jamming.

[0098] In some other embodiments of the present invention, as Figure 10 shown, the banknote receiving impeller 10 includes two impellers arranged in parallel at intervals. The impeller includes an impeller disk body 11 and a plurality of blades 12 extending outwardly and curving from the impeller disk body. As Figure 11 shown, a blowing hole 203 is provided below the banknote dropping flap 20 corresponding to each impeller. As Figure 20 shown, an inclined surface block 74 is provided in the deposit device housing below the banknote receiving impeller 10. Guide boxes 70 that can move along the inclined surface are respectively installed at positions directly below the two impellers on the inclined surface of the inclined surface block 74. The top surface of the guide box 70 has an arc surface matching the outer contour of the impeller. A plurality of concave semi-ellipsoidal air collecting grooves 71 are provided on the arc surface. The bottom of each air collecting groove 71 is collected to the air outlet pipe 73 through the air guiding pipe 72. The mouth of the air outlet pipe 73 faces the blowing hole 203 of the banknote dropping flap 20; when the banknote dropping flap 20 swings down to the second angle position, the guide box 70 moves backward and rises along the inclined surface block, so that the blades of each impeller of the banknote receiving impeller 10 contact the arc surface of the corresponding guide box ( Figure 21 the state shown in); after the banknote dropping flap 20 swings away from the second angle position, the guide box 70 moves forward and descends along the inclined surface block 74, so that the blades of each impeller of the banknote receiving impeller 10 are separated from the arc surface of the corresponding guide box ( Figure 22In the state shown. The beneficial effects of adopting the above technical solution are as follows: after the banknote dropping flap flips to the second angular position, while the banknote receiving impeller rotates to scrape the banknote contact surface of the baffle assembly, when the blade contacts the arc surface of the air guide box, it will generate an air flow in the semi-ellipsoidal air collecting groove. The air flow is led to the air blowing holes of the banknote dropping flap through the air guiding pipe and the air outlet pipe and blown out, which can blow off the residual banknotes that may adhere to the surface of the banknote dropping flap, further ensuring that all banknotes can smoothly fall into the banknote collecting container and ensuring the accurate number of stored banknotes.

[0099] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and their purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A deposit mechanism for preventing the residue of folded banknotes, characterized in that, include: A banknote receiving impeller is arranged at the end of the banknote transmission channel of the deposit device, a banknote taking port is arranged on the front side of the deposit device frame located at the banknote receiving impeller, and a downward banknote dropping port is arranged on the deposit device frame just below the front part of the banknote receiving impeller; A banknote dropping flap, the upper end of which is pivotally connected between the left side plate and the right side plate of the deposit device frame; A baffle assembly, comprising a main baffle and a sub-baffle, wherein the lower end of the main baffle is pivotally connected between the left and right plates of the deposit device frame, the lower end of the sub-baffle is rotatably connected to the upper end of the main baffle, and a straight limit structure for limiting the main baffle and the sub-baffle to be in a straight state is also provided between the main baffle and the sub-baffle; A linkage plate, one end of which has a long strip connecting hole, an end of the linkage plate away from the long strip connecting hole is hinged to one side of the main baffle, one side of the banknote falling flip plate is connected to the long strip connecting hole of the linkage plate via a sliding connecting pin, and the sliding connecting pin passes through the long strip connecting hole and can slide along the length direction of the long strip connecting hole; A banknote dropping driving mechanism, which is used to drive the banknote dropping flap to swing between a first angle position and a second angle position; When the banknote-dropping flap is at the first angle position, the lower end of the banknote-dropping flap abuts against the lower end of the main baffle, and driven by the linkage plate, the main baffle and the auxiliary baffle of the baffle assembly are located close to the banknote-taking port, and a spacing space for collecting banknotes is provided between the banknote-receiving impeller and the baffle assembly; When the banknote dropping flap is at the second angle position, a spacing space for residual banknotes to fall is formed between the banknote dropping flap and the baffle assembly, and driven by the linkage plate, the banknote contact surface of the baffle assembly contacts the banknote receiving impeller; During the swinging process of the banknote falling flip plate from the first angle position to the second angle position, the sliding connecting pin moves in the elongated connecting hole from the end close to the middle position of the linkage plate to the end away from the middle position of the linkage plate. When it first contacts the end wall of the elongated connecting hole, the banknote contact surface of the banknote falling flip plate is arranged obliquely downward from top to bottom and its angle with the horizontal plane is 75°-80°.

2. The deposit mechanism for preventing the residue of folded banknotes according to claim 1, characterized in that When the banknote falling flap is in the first angle position, the banknote contact surface of the banknote falling flap is arranged obliquely downward from top to bottom and its angle with the horizontal plane is 45°, and the banknote contact surface of the baffle assembly is arranged obliquely upward from bottom to top and its angle with the horizontal plane is 120°.

3. The deposit module for preventing residual folded banknotes according to claim 2, characterized in that, When the banknote falling flap is at the second angle position, the banknote contact surface of the banknote falling flap is arranged vertically downward from top to bottom, and the banknote contact surface of the baffle assembly is arranged obliquely upward from bottom to top and its angle with the horizontal plane is less than 90°.

4. The deposit mechanism for preventing the residue of folded banknotes according to claim 1, wherein, It further includes a shielding cover assembly, the shielding cover assembly includes an arc-shaped shielding cover, a left ear plate and a right ear plate. The left ear plate and the right ear plate are respectively fixedly connected to the left side and the right side of the arc-shaped shielding cover, and the ends of the left ear plate and the right ear plate away from the arc-shaped shielding cover are pivotally connected to the deposit device housing; it further includes an opening and closing drive mechanism for driving the shielding cover assembly to swing. Driven by the opening and closing drive mechanism, the arc-shaped shielding cover is switched between a state of completely shielding the banknote-taking opening and a state of completely disengaging from the banknote-taking opening.

5. The deposit module for preventing residue of folded banknotes according to claim 4, characterized in that, An upper baffle is provided above the banknote-taking opening. The outer end of the upper baffle close to the banknote-taking opening is provided with an outwardly bent outer edge. When the arc-shaped shielding cover completely shields the banknote-taking opening, the top of the arc-shaped shielding cover is located inside the outer edge; at least two downwardly hanging hanging chains are further provided on the upper baffle, and the hanging chains are formed by connecting a plurality of ring bodies. A lower baffle is provided below the banknote-taking opening. The lower baffle includes an inclined portion and a horizontal portion arranged at an angle. When the banknote-dropping flap is in the banknote-receiving state at the first angular position, the back surface of the main baffle of the baffle assembly abuts against the inclined portion of the lower baffle. When the auxiliary baffle is turned outward to the horizontal state, the auxiliary baffle penetrates through the banknote-taking opening, and the back surface of the auxiliary baffle abuts against the horizontal portion of the lower baffle.

6. The deposit mechanism for preventing the residue of folded banknotes according to claim 5, wherein, An inwardly bent portion is further provided at the upper part of the auxiliary baffle. The angle formed by the inner surface of the inwardly bent portion and the banknote contact surface of the auxiliary baffle is less than 180°; when the banknote-dropping flap is in the banknote-receiving state at the first angular position and the arc-shaped shielding cover completely shields the banknote-taking opening, the minimum gap between the top end of the inwardly bent portion of the auxiliary baffle and the inner wall surface of the arc-shaped shielding cover is 0.1 mm - 2 mm, and the distance between the top end of the inwardly bent portion and the upper baffle is 20 mm - 30 mm.

7. The deposit mechanism for preventing the residue of folded banknotes according to claim 6, characterized in that, When the banknote-dropping flap is in the banknote-receiving state at the first angular position and the main baffle and the auxiliary baffle are in a straight state, the hanging chain extends downward to the inside of the inwardly bent portion of the auxiliary baffle, and the lower end of the hanging chain is lower than the top of the inwardly bent portion and higher than the bottom of the inwardly bent portion.

8. The deposit mechanism for preventing residual folded banknotes according to claim 5, characterized in that, A light detection sensor for detecting whether banknotes are attached to the banknote contact surface of the main baffle is installed on the back surface of the inclined portion of the lower baffle. A through hole for the light path of the light detection sensor to pass through is provided on the main baffle in a front-back through manner, or the main baffle is made of a transparent material.

9. The deposit mechanism for preventing the residue of folded banknotes according to claim 1, wherein When the main baffle and the auxiliary baffle are in a straight state, the width of the banknote contact surface formed by the main baffle and the auxiliary baffle is 5 - 10 mm wider than the width of the largest-size banknote; the width of the banknote contact surface of the main baffle is greater than 1 / 2 of the width of the largest-size banknote.

10. The deposit module for preventing the residue of folded banknotes according to claim 1, characterized in that, The note-receiving impeller includes two impellers arranged in parallel at intervals. Below the note-dropping flap, there is a blow hole corresponding to each impeller. In the deposit device frame below the note-receiving impeller, there is an inclined plane block. On the inclined plane of the inclined plane block, there are diversion boxes that can move along the inclined plane respectively installed at positions directly below the two impellers. The top surface of the diversion box has an arc surface matching the outer contour of the impeller. There are a plurality of concave semi-ellipsoidal air-collecting grooves on the arc surface. The bottom of each air-collecting groove is collected to an air outlet pipe through a duct. The mouth of the air outlet pipe faces the blow hole of the note-dropping flap.

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