Asthma inhaler with auxiliary function

Abstract

The invention discloses an asthma inhaler with an auxiliary function, and relates to the technical field of asthma inhalers, the asthma inhaler comprises a handle frame and a connecting pipe I. The middle part of the handle frame is provided with an auxiliary cylinder, the auxiliary cylinder is internally provided with a hose, one end of the hose is provided with a spray nozzle, and the outside of the spray nozzle is provided with a shield; a spraying outer frame is installed at one end of the interior of the auxiliary cylinder, and a pump body is arranged above the top of the spraying outer frame. According to the asthma inhaler with the auxiliary function, through the design of threaded connection between a lead screw and a built-in disc, the built-in disc is attached to the inner surface of a medicament bottle and continuously moves downwards when the lead screw rotates clockwise, and the inner surface of the medicament bottle can be cleaned in cooperation with the design of the built-in disc in the process that liquid medicine in the medicament bottle is pumped out and atomized through a pump body; the situation that liquid medicine is attached to the inner surface of the medicine bottle, and the using accuracy of the medicine during asthma treatment is affected is avoided, meanwhile, the liquid medicine in the medicine bottle can be mixed more evenly, and asthma atomization treatment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of asthma inhalers, in particular to an asthma inhaler with auxiliary functions. Background Art

[0002] Asthma is a lung disease characterized by reversible airway obstruction, airway inflammation and increased airway responsiveness to a variety of stimuli. When it occurs in young children, parents need to constantly persuade them to cooperate with asthma treatment. Asthma airway obstruction is caused by a combination of factors. Asthma inhalers are used to atomize the drug solution into tiny particles. The drug enters the respiratory tract and is deposited in the lungs by inhalation, thus achieving the purpose of painless, rapid and effective treatment.

[0003] For example, the utility model with application number CN202322373581.0 relates to the technical field of asthma treatment, and discloses a respiratory medicine asthma treatment device, including: an asthma inhaler body. The respiratory medicine asthma treatment device further prevents dust from entering the protective cover 2 by providing a clamping connection between ring 2 and ring 3 with an annular clamping groove between ring 1 and the protective cover. However, after the medicine bottle in the asthma inhaler is used, the inner wall of the medicine bottle will still have residual liquid medicine, which will cause waste and affect the accuracy of the medicine inhalation amount.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an asthma inhaler with auxiliary functions is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an asthma inhaler with auxiliary functions, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an asthma inhaler with auxiliary function, comprising a handle frame and a connecting tube 1, an auxiliary tube is arranged in the middle of the handle frame, and a hose is arranged inside the auxiliary tube, a spray nozzle is installed at one end of the hose, and a shield is arranged outside the spray nozzle, a spray outer frame is installed at one end inside the auxiliary tube, a pump body is arranged above the top of the spray outer frame, the connecting tube 1 is arranged at the top of the pump body, and a medicine bottle is threadedly installed on the top of the connecting tube 1, a driving component for assisting in the quantitative dosage of medicine and cleaning the residue on the inner wall of the medicine bottle is arranged inside the medicine bottle, and the driving component comprises a double-headed motor, a built-in disk and a screw, a screw is installed at the bottom output end of the double-headed motor, a built-in disk is threadedly arranged on the outer surface of the screw, the built-in disk is slidably arranged inside the medicine bottle, and a top cover is threadedly installed on the top of the medicine bottle.

[0007] Furthermore, a storage component for assisting in temperature regulation of asthma spray is arranged inside the spray outer frame, and the interior of the spray outer frame is a hollow structure.

[0008] Furthermore, the storage assembly includes a second connecting pipe, an end cap and a spray bin, and the spray bin is arranged in the middle of the spray outer frame, the middle of the spray outer frame and the spray bin are connected and a second connecting pipe is installed, and one end of the spray outer frame is threadedly provided with an end cap.

[0009] Furthermore, the inner diameter of the spray outer frame is larger than the outer diameter of the spray bin, and the spray bin remains connected to the hose.

[0010] Furthermore, a restraining belt is bonded to the outer surface of the handle frame, and a positioning hole is opened on the side of the outer surface of the handle frame close to the restraining belt.

[0011] Furthermore, a mounting hole is provided on a side of the outer surface of the shield away from the spray nozzle, and a retaining frame is mounted in the mounting hole, and the retaining frame is in a herringbone structure.

[0012] Furthermore, the outside of the medicine bottle is provided with an auxiliary component for assisting in attracting the attention of young children, and the auxiliary component includes an auxiliary plate and a built-in column, the inner surface of the auxiliary plate is snap-fitted with the built-in column, and one end of the built-in column is fixedly provided on the upper outer surface of the medicine bottle.

[0013] Furthermore, the auxiliary component also includes a string, a built-in groove, a connecting handle and a damping shaft, and two groups of auxiliary plates are provided. The outer surface of one group of auxiliary plates is equipped with a string, and the inner ring of the other group of auxiliary plates is provided with a built-in groove, and a damping shaft is rotatably arranged inside the built-in groove, and the end of the damping shaft is equipped with a connecting handle.

[0014] Furthermore, a connecting assembly for assisting in producing music is provided on the top of the double-headed motor, and the connecting assembly includes a connecting shaft, a connecting sleeve, a connecting rod and a lever. A connecting shaft is provided on the outer surface of the top of the connecting shaft, and a connecting rod is connected to the outer surface of the connecting shaft, and a lever is installed on the outer surface of one side of the connecting rod.

[0015] Furthermore, the connecting rod and the lever form an "L"-shaped structure, and the bottom of the lever is arranged on the outer surface of the string.

[0016] The present invention provides an asthma inhaler with auxiliary function, which has the following beneficial effects:

[0017] 1. The asthma inhaler with auxiliary function is designed with a threaded connection between the screw and the built-in disk, so that when the screw rotates clockwise, the built-in disk is attached to the inner surface of the medicine bottle and moves down continuously. The built-in disk can be used to clean the inner surface of the medicine bottle when the medicine liquid in the medicine bottle is drawn out and atomized by the pump body, so as to avoid the adhesion of the medicine liquid on the inner surface of the medicine bottle and affect the accuracy of the medicine use during asthma treatment. At the same time, the medicine liquid in the medicine bottle can be mixed more evenly, which is convenient for asthma atomization treatment.

[0018] 2. The asthma inhaler with auxiliary function can inject water of suitable temperature into the spray frame and the spray chamber when the temperature is low, and at the same time, the spray frame and one end of the spray chamber are threadedly closed by the design of the end cover. The above operation facilitates heating of the spray chamber, which is beneficial for the spray sprayed from the spray nozzle to have a certain temperature, reduce the temperature difference between the spray and the user's oral temperature, and reduce the discomfort caused by the spray temperature difference.

[0019] 3. The asthma inhaler with auxiliary function can continuously pluck the wound string on the outer surface of the damping shaft through the continuous rotation of the connecting rod and the lever, so that the string makes a pleasant sound to attract the attention of the child, thereby reducing the phenomenon of the child being fussy and uncooperative during the nebulization treatment of asthma. The connecting handle and the damping shaft are designed with respect to the rotation structure of the auxiliary plate, so that the string can be tightened when it becomes loose after repeated use, so as to facilitate repeated use of the medicine bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall installation structure of a southwest isometric view of an asthma inhaler with auxiliary functions according to the present invention;

[0021] Figure 2 It is a partial structural schematic diagram of an asthma inhaler with auxiliary functions according to the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure of a medicine bottle of an asthma inhaler with auxiliary functions according to the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of a storage component of an asthma inhaler with auxiliary functions according to the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of an auxiliary component of an asthma inhaler with auxiliary functions according to the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a driving assembly of an asthma inhaler with auxiliary functions according to the present invention;

[0026] Figure 7 The present invention is a schematic diagram of the structure of a connecting component of an asthma inhaler with auxiliary functions.

[0027] In the figure: 1. handle frame; 2. restraint belt; 3. shield; 4. spray nozzle; 5. baffle; 6. auxiliary tube; 7. spray frame; 8. pump body; 9. connecting pipe 1; 10. medicine bottle; 11. positioning hole; 12. mounting hole; 13. top cover; 14. storage assembly; 1401. connecting pipe 2; 1402. end cover; 1403. spray bin; 15. auxiliary assembly; 1501. auxiliary plate; 1502. built-in column; 1503. string; 1504. built-in groove; 1505. connecting handle; 1506. damping shaft; 16. driving assembly; 1601. double-headed motor; 1602. built-in disk; 1603. lead screw; 17. connecting assembly; 1701. connecting shaft; 1702. connecting sleeve; 1703. connecting rod; 1704. lever. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, the present invention provides a technical solution: an asthma inhaler with auxiliary function, including a handle frame 1, a restraining belt 2, a shield 3, a spray nozzle 4, a blocking frame 5, an auxiliary tube 6, a spray outer frame 7, a pump body 8, a connecting pipe 1 9, a medicine bottle 10, a positioning hole 11, a mounting hole 12, a top cover 13, a storage component 14, a connecting pipe 2 1401, an end cover 1402, a spray bin 1403, an auxiliary component 15, an auxiliary plate 1501, a built-in column 1502, a string 1503, a built-in groove 1504, a connecting handle 1505, a damping shaft 1506, a driving component 16, a double-headed motor 1601, a built-in disk 1602, a screw rod 1603, a connecting component 17, a connecting Axle 1701, connecting sleeve 1702, connecting rod 1703 and lever 1704, an auxiliary tube 6 is arranged in the middle of the handle frame 1, and a hose is arranged inside the auxiliary tube 6, a spray nozzle 4 is installed at one end of the hose, and a shield 3 is arranged outside the spray nozzle 4, a spray outer frame 7 is installed at one end of the inner part of the auxiliary tube 6, a pump body 8 is arranged above the top of the spray outer frame 7, a connecting pipe 9 is arranged on the top of the pump body 8, and a medicine bottle 10 is threadedly installed on the top of the connecting pipe 9, and a driving component 16 for auxiliary medicine quantitative and cleaning the residue on the inner wall of the medicine bottle is arranged inside the medicine bottle 10, and the driving component 16 includes a double-headed motor 1601, a built-in disk 1602 and a screw 1603, A screw rod 1603 is installed at the bottom output end of the double-headed motor 1601, and a built-in disk 1602 is threadedly arranged on the outer surface of the screw rod 1603. The built-in disk 1602 is slidably arranged inside the medicine bottle 10, and a top cover 13 is threadedly arranged on the top of the medicine bottle 10. Liquid medicine for asthma treatment is pre-stored inside the medicine bottle 10. The double-headed motor 1601 is electrically connected to the pump body 8, so that when the pump body 8 is activated, the user can cover the protective cover 3 and the spray nozzle 4 outside the mouth. Through the design of the pump body 8, the connecting pipe 1 9, the connecting pipe 2 1401 and the hose, it is convenient to input the medicine in the medicine bottle 10 into the spray chamber 1403 and use the spray nozzle 4 to spray the medicine in atomized form. , so as to act on the user's asthma treatment. When the medicine is atomized, the design of the double-headed motor 1601 drives the screw rod 1603 to rotate. The threaded connection design between the screw rod 1603 and the built-in disk 1602 makes it convenient for the built-in disk 1602 to fit the inner surface of the medicine bottle 10 and move down continuously when the screw rod 1603 rotates clockwise. The design of the built-in disk 1602 can be used to clean the inner surface of the medicine bottle 10 during the process of the medicine liquid in the medicine bottle 10 being extracted and atomized by the pump body 8, so as to avoid the adhesion of the medicine liquid on the inner surface of the medicine bottle 10, which affects the accuracy of the medicine use during asthma treatment. At the same time, the medicine liquid in the medicine bottle 10 can be mixed more evenly, which is convenient for asthma atomization treatment.

[0030] like Figure 1 , Figure 2 and Figure 4As shown, a storage component 14 for assisting asthma spray temperature adjustment is arranged inside the spray outer frame 7, and the interior of the spray outer frame 7 is a hollow structure, the storage component 14 includes a second connecting pipe 1401, an end cap 1402 and a spray bin 1403, and the middle part of the spray outer frame 7 is provided with the spray bin 1403, the middle part of the spray outer frame 7 and the spray bin 1403 are connected and installed with a second connecting pipe 1401, one end of the spray outer frame 7 is threadedly provided with an end cap 1402, the inner diameter of the spray outer frame 7 is larger than the outer diameter of the spray bin 1403, and the spray bin 1403 is connected to the hose. Then, the size of the spray frame 7 and the spray bin 1403 is designed so that there is a certain space between the spray frame 7 and the spray bin 1403, so that when the temperature is low, water with a suitable temperature can be injected into the spray frame 7 and the spray bin 1403. At the same time, the end cover 1402 is designed to thread the spray frame 7 and one end of the spray bin 1403. The above operation facilitates heating of the spray bin 1403, which is beneficial for the spray sprayed from the spray nozzle 4 to have a certain temperature, reduces the temperature difference between the spray temperature and the user's oral temperature, and reduces the discomfort caused by the spray temperature difference.

[0031] like Figure 1 and Figure 2 The visor 3 is provided with a plurality of holes 14 on the top of the handle 1, and the visor 3 is provided with a plurality of holes 15 on the top of the handle 1. The visor 3 is provided with a plurality of holes 16 on the top of the handle 1, and the visor 3 is provided with a plurality of holes 17 on the top of the handle 1.

[0032] like Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, the outside of the medicine bottle 10 is provided with an auxiliary component 15 for assisting in attracting the attention of the young child, and the auxiliary component 15 includes an auxiliary plate 1501 and a built-in column 1502, the inner surface of the auxiliary plate 1501 is clamped with the built-in column 1502, and one end of the built-in column 1502 is fixedly arranged on the upper outer surface of the medicine bottle 10, the auxiliary component 15 also includes a string 1503, a built-in groove 1504, a connecting handle 1505 and a damping shaft 1506, and the auxiliary plate 1501 is provided with two groups, and the outer surface of one group of auxiliary plates 1501 is provided with a string The inner ring of another set of auxiliary plates 1501 is provided with a built-in groove 1504, and the inner rotation of the built-in groove 1504 is provided with a damping shaft 1506, and the end of the damping shaft 1506 is installed with a connecting handle 1505. The top of the double-headed motor 1601 is provided with a connecting assembly 17 for assisting in making music, and the connecting assembly 17 includes a connecting shaft 1701, a connecting sleeve 1702, a connecting rod 1703 and a lever 1704. The outer surface of the top of the connecting shaft 1701 is provided with a connecting shaft 1701, and the outer surface of the connecting shaft 1701 is provided with a connecting shaft 1701. The surface is connected with a connecting rod 1703, and a lever 1704 is installed on the outer surface of one side of the connecting rod 1703. The connecting rod 1703 and the lever 1704 form an "L"-shaped structure, and the bottom of the lever 1704 is arranged on the outer surface of the string 1503. The design of the built-in column 1502 facilitates the clamping and fixing between the two sets of semicircular auxiliary plates 1501 and the medicine bottle 10. Then, when the double-headed motor 1601 is used for atomization, the connecting rod 1703 at the top of the double-headed motor 1601 and the connecting rod 1703 and the lever 1704 connected to the connecting rod 1703 are connected. 04 rotates around the medicine bottle 10, and the string 1503 wound on the outer surface of the damping shaft 1506 can be continuously plucked through the continuous rotation of the connecting rod 1703 and the lever 1704, so that the string 1503 makes a pleasant sound to attract the attention of the child, thereby reducing the phenomenon of the child being noisy and uncooperative during the nebulization treatment of asthma. The connecting handle 1505 and the damping shaft 1506 are designed with respect to the rotation structure of the auxiliary plate 1501, so that the string 1503 can be tightened when it is loosened after repeated use, so as to facilitate repeated use of the medicine bottle 10.

[0033] In summary, if Figure 1-Figure 7As shown, the asthma inhaler with auxiliary function, when in use, is designed with a rubber strap 2, so that the strap 2 is conveniently put on the user's head, and the shield 3 and the spray nozzle 4 are covered outside the mouth, and then the retaining frame 5 is placed between the handle frame 1 and the shield 3 by utilizing the design of the mounting hole 12 and the positioning hole 11, so as to support the shield 3, and the user does not need to manually support the shield 3, which is convenient for asthma atomization spray asthma treatment. In addition, when the asthma inhalation is not needed, the retaining frame 5 between the handle frame 1 and the shield 3 can be removed, and then the shield 3 and one end of the auxiliary tube 6 can be snapped and fixed, so that the external hose can be placed and stored in the auxiliary tube 6, so as to avoid the hoses of a certain length from being stacked and placed outside. The medicine bottle 10 is pre-stored with liquid medicine for asthma treatment, and the double-headed motor 1601 is electrically connected to the pump body 8, so that when the pump body 8 is activated, the user can cover the protective cover 3 and the spray nozzle 4 outside the mouth, and the design of the pump body 8, the connecting tube 1 9, the connecting tube 2 1401 and the hose facilitates the input of the medicine in the medicine bottle 10 into the spray bin 1403 and the use of the spray nozzle 4 to spray the medicine, thereby treating the user's asthma. When the medicine is atomized, the design of the double-headed motor 1601 drives the screw rod 1603 to rotate, and the threaded connection design between the screw rod 1603 and the built-in disk 1602 facilitates the built-in disk 1602 to fit the inner surface of the medicine bottle 10 and move downward continuously when the screw rod 1603 rotates clockwise, which can The inner surface of the medicine bottle 10 can be cleaned by the design of the built-in disk 1602 during the process of the medicine liquid in the medicine bottle 10 being extracted and atomized by the pump body 8, so as to avoid the adhesion of the medicine liquid on the inner surface of the medicine bottle 10 and affect the accuracy of the medicine use during asthma treatment. At the same time, the medicine liquid in the medicine bottle 10 can be mixed more evenly, which is convenient for asthma atomization treatment. Then, the size of the spray frame 7 and the spray bin 1403 is designed so that there is a certain space between the spray frame 7 and the spray bin 1403, so that when the temperature is low, water with a suitable temperature can be injected into the spray frame 7 and the spray bin 1403. At the same time, the design of the end cover 1402 is used to thread the spray frame 7 and one end of the spray bin 1403. Through the above operation, it is convenient to clean the spray bin 14 03 is heated, which is conducive to the spray sprayed from the spray nozzle 4 having a certain temperature, reducing the temperature difference between the spray and the user's oral temperature, and reducing the discomfort caused by the temperature difference of the spray. In addition, the design of the built-in column 1502 facilitates the clamping and fixing of the two groups of auxiliary plates 1501 with a semicircular structure and the medicine bottle 10. Then, when the double-headed motor 1601 is used in conjunction with atomization, the connecting rod 1703 at the top of the double-headed motor 1601 and the connecting rod 1703 and the lever 1704 connected to the connecting rod 1703 rotate around the center of the medicine bottle 10. Through the continuous rotation of the connecting rod 1703 and the lever 1704, the string 1503 wound on the outer surface of the damping shaft 1506 can be continuously plucked, so that the string 1503 makes a pleasant sound to attract the attention of young children.To reduce the phenomenon of children being restless and uncooperative during atomization treatment of asthma, the connecting handle 1505 and the damping shaft 1506 are designed to rotate the auxiliary plate 1501, so that the string 1503 can be tightened when it is loosened after repeated use, so that the medicine bottle 10 can be used repeatedly.

[0034] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An asthma inhaler with auxiliary function, comprising a handle frame (1) and a connecting tube (9), characterized in that: An auxiliary tube (6) is arranged in the middle of the handle frame (1), and a hose is arranged inside the auxiliary tube (6), a spray nozzle (4) is installed at one end of the hose, and a shield (3) is arranged outside the spray nozzle (4), a spray outer frame (7) is installed at one end inside the auxiliary tube (6), a pump body (8) is arranged above the top of the spray outer frame (7), the connecting pipe (9) is arranged at the top of the pump body (8), and a medicine bottle (10) is threadedly installed on the top of the connecting pipe (9), and the medicine bottle (10) is arranged inside A driving assembly (16) is provided to assist in the quantitative measurement of medicines and to clean the residues on the inner wall of the medicine bottle, and the driving assembly (16) comprises a double-headed motor (1601), a built-in disk (1602) and a screw (1603), the bottom output end of the double-headed motor (1601) is provided with a screw (1603), the outer surface of the screw (1603) is threadedly provided with a built-in disk (1602), the built-in disk (1602) is slidably provided inside the medicine bottle (10), and the top of the medicine bottle (10) is threadedly provided with a top cover (13).

2. An asthma inhaler with auxiliary function according to claim 1, characterized in that: A storage component (14) for assisting in temperature regulation of asthma spray is arranged inside the spray outer frame (7), and the interior of the spray outer frame (7) is a hollow structure.

3. An asthma inhaler with auxiliary function according to claim 2, characterized in that: The storage assembly (14) comprises a second connecting pipe (1401), an end cover (1402) and a spray bin (1403), and the spray bin (1403) is arranged in the middle of the spray outer frame (7), the second connecting pipe (1401) is connected and installed in the middle of the spray outer frame (7) and the spray bin (1403), and the end cover (1402) is threadedly arranged at one end of the spray outer frame (7).

4. An asthma inhaler with auxiliary function according to claim 3, characterized in that: The inner diameter of the spray outer frame (7) is larger than the outer diameter of the spray bin (1403), and the spray bin (1403) remains connected to the hose.

5. The asthma inhaler with auxiliary function according to claim 1, characterized in that: The outer surface of the handle frame (1) is bonded with a restraining belt (2), and a positioning hole (11) is provided on a side of the outer surface of the handle frame (1) close to the restraining belt (2).

6. An asthma inhaler with auxiliary function according to claim 1, characterized in that: A mounting hole (12) is provided on a side of the outer surface of the shield (3) away from the spray nozzle (4), and a retaining frame (5) is mounted in the mounting hole (12), and the retaining frame (5) is in a herringbone structure.

7. An asthma inhaler with auxiliary function according to claim 1, characterized in that: The outside of the medicine bottle (10) is provided with an auxiliary component (15) for assisting in attracting the attention of a young child, and the auxiliary component (15) comprises an auxiliary plate (1501) and a built-in column (1502), the built-in column (1502) is snap-fitted and mounted on the inner surface of the auxiliary plate (1501), and one end of the built-in column (1502) is fixedly arranged on the upper outer surface of the medicine bottle (10).

8. An asthma inhaler with auxiliary function according to claim 7, characterized in that: The auxiliary component (15) further comprises a string (1503), a built-in groove (1504), a connecting handle (1505) and a damping shaft (1506), and the auxiliary plates (1501) are provided with two groups, one group of the auxiliary plates (1501) having the string (1503) installed on the outer surface thereof, and the other group of the auxiliary plates (1501) having the built-in groove (1504) opened in an annular shape inside thereof, and the damping shaft (1506) is rotatably arranged inside the built-in groove (1504), and the end of the damping shaft (1506) is provided with a connecting handle (1505).

9. An asthma inhaler with auxiliary function according to claim 1, characterized in that: The top of the double-headed motor (1601) is provided with a connection component (17) for assisting in producing music, and the connection component (17) comprises a connection shaft (1701), a connection sleeve (1702), a connecting rod (1703) and a lever (1704), the top outer surface of the connection shaft (1701) is provided with a connection shaft (1701), and the outer surface of the connection shaft (1701) is connected to the connecting rod (1703), and the outer surface of one side of the connection rod (1703) is installed with a lever (1704).

10. An asthma inhaler with auxiliary function according to claim 9, characterized in that: The connecting rod (1703) and the lever (1704) form an "L"-shaped structure, and the bottom of the lever (1704) is arranged on the outer surface of the string (1503).

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