A voice coil motor for a sputum excretion machine

Abstract

This utility model discloses a voice coil motor for a sputum suction machine, specifically relating to the field of medical device technology. It includes: a support assembly and a vibration assembly; a fixed sleeve in the support assembly, one end of which is configured as a fixed end cap, with a coil fixedly installed in the middle of the inner side of the fixed end cap; the vibration assembly, located inside the fixed sleeve, is movably sleeved around the coil; a support frame in the support assembly, with a first spring and a second spring fixedly installed at both ends, the support frame being fixedly connected to the fixed end cap; both ends of the vibration assembly being fixedly connected to the first and second springs, respectively; and several permanent magnets fixedly installed inside the vibration assembly, uniformly surrounding the outer surface of the coil. This utility model utilizes the shapes of the first spring, the second spring, the first rubber pad, and the second rubber pad, as well as the elongated frustum-shaped cavity and the short frustum-shaped cavity, to improve the buffering effect, reduce energy reflection, and reduce impact; prevent damage caused by high-frequency vibration; and reduce the impact on the patient during sputum suction.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a voice coil motor for a sputum suction machine. Background Technology

[0002] It is known that for patients with lung diseases, sputum accumulation in the respiratory tract can lead to airway obstruction and impaired breathing if it cannot be expelled in time. It can also breed bacteria, causing respiratory infections and other complications. Therefore, sputum expectoration is an important part of treatment. In current technology, manual back percussion is often used, but it can only act on the superficial layer of the body, and it is difficult to control the force and frequency of percussion. It is also time-consuming and laborious. Therefore, in order to effectively expel sputum from patients with lung diseases, sputum expectoration machines have been developed.

[0003] However, in actual use, the existing sputum suction machines lack elastic connection in their eccentric wheel structure that generates vibration. If the suction force is too strong, it can easily injure the patient; if the suction force is too weak, it will not achieve the desired sputum suction effect, resulting in poor actual sputum suction results. Therefore, a voice coil motor for sputum suction machines is proposed as a further improvement to increase elastic connection, improve buffering effect, and reduce the impact force of vibration on the patient during sputum suction. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a voice coil motor for a sputum suction machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a voice coil motor for a sputum suction machine, comprising: a support assembly and a vibration assembly located inside the support assembly;

[0006] The support components include:

[0007] A fixed sleeve has a fixed end cap at one end, on which a coil is fixedly mounted in the center of its inner side. The other end of the fixed sleeve has a movable opening. A vibration assembly located inside the fixed sleeve is movably fitted around the coil. The movement trajectory of the vibration assembly passes through the movable opening along the centerline of the fixed sleeve.

[0008] A support frame, with a first spring and a second spring fixedly mounted at its two ends respectively. The end of the support frame near the second spring is fixedly connected to the inner wall of the fixed end cover. The coil is located inside the support frame and between the first spring and the second spring.

[0009] The two ends of the vibration assembly are fixedly connected to the first spring and the second spring, respectively. Several permanent magnets are fixedly installed inside the vibration assembly in a ring-shaped uniform distribution, and the several permanent magnets surround the outer surface of the coil.

[0010] Furthermore, the vibration assembly includes:

[0011] A vibrating sleeve, with its two ends fixedly mounted on a first spring and a second spring, respectively. The end of the vibrating sleeve near the first spring is configured as a vibrating end cap, and the end near the second spring is configured as a sleeve opening. A plurality of permanent magnets, evenly distributed in a ring, are fixedly mounted on the inner wall of the side portion of the vibrating sleeve. The vibrating sleeve is located inside a support frame.

[0012] A limiting cylinder, one end of which is fixedly connected to the inner center of the vibration end cover, and the other end of which is inserted into the center of the coil.

[0013] Furthermore, a fixing seat is fixedly connected to the middle of the inner side of the fixing end cover, and the end of the coil is fixedly installed on the other end face of the fixing seat. The fixing seat and the fixing end cover are provided with a through hole that extends to the coil. The coil is connected to the power supply through a wire passing through the through hole. The second spring is wrapped around the outer surface of the fixing seat, and the limiting cylinder passes through the coil and is inserted into the interior of the fixing seat.

[0014] Furthermore, a first rubber pad and a second rubber pad are fixedly installed on the middle part of the outer side of the vibration end cover and inside the fixed base, respectively, with the second rubber pad contacting the end face of the limiting cylinder.

[0015] Furthermore, the upper shell of the vibratory feeder is fixedly installed at the end of the fixed sleeve away from the fixed end cover, and the lower shell of the vibratory feeder is movably sleeved at the end of the fixed sleeve near the fixed end cover.

[0016] Furthermore, the interior of the limiting cylinder is configured as an elongated frustum-shaped cavity, and the middle of the vibrating end cover is provided with a short frustum-shaped cavity that communicates with the elongated frustum-shaped cavity. The fixed sleeve and the upper shell of the vibrating plate are connected by a sealing ring.

[0017] Furthermore, the end face of the vibrating sleeve near the sleeve opening is fixedly mounted on the second spring plate by a fixing washer.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] Compared with existing technologies, the elastic connection between the first and second spring sheets and the support assembly enhances the buffering effect, reducing the impact on the patient during sputum expectoration. The use of the first and second rubber pads reduces energy reflection. The nonlinear damping properties of rubber absorb high-frequency harmonics, preventing muscle / nerve damage caused by high-frequency vibration. This protects related components and reduces impact. A sealed environment is created using the upper shell of the vibrating disc and the fixed sleeve, increasing air resistance through the shapes of the long and short frustum-shaped cavities, thus reducing the impact of high-frequency vibration from the vibrating sleeve. Vibration is achieved through the cooperation of the support assembly and the vibrating assembly located inside the support assembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 3 This is a schematic diagram of the fixed sleeve and through hole structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the fixing base and through hole of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the limiting cylinder of this utility model.

[0025] Figure 6 This is a schematic diagram of the support frame and vibration sleeve of this utility model.

[0026] Figure 7 This is a schematic diagram of the exploded structure of this utility model.

[0027] Figure 8 This is a schematic diagram showing the shape of the first and second springs of this utility model.

[0028] The attached figures are labeled as follows:

[0029] 100. Support assembly; 110. Fixing sleeve; 111. Fixing end cap; 112. Movable opening; 113. Fixing base; 114. Through hole; 120. Support frame; 130. First spring; 140. Second spring; 150. Vibrating plate upper shell; 160. Vibrating plate bottom shell; 200. Vibration assembly; 210. Vibration sleeve; 211. Vibration end cap; 212. Sleeve opening; 220. Limiting sleeve; 300. Coil; 400. Permanent magnet; 500. First rubber gasket; 600. Second rubber gasket; 700. Fixing gasket; a. Long frustum-shaped cavity; b. Short frustum-shaped cavity; c. Sealing ring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] As attached Figure 1 and attached Figure 2 A voice coil motor for a sputum suction machine is shown, comprising: a support assembly 100 and a vibration assembly 200 located inside the support assembly 100;

[0032] Support component 100 includes:

[0033] A fixed sleeve 110 has a fixed end cap 111 at one end, on which a coil 300 is fixedly mounted. The other end of the fixed sleeve 110 has a movable opening 112. A vibration assembly 200, located inside the fixed sleeve 110, is movably sleeved around the coil 300. The movement trajectory of the vibration assembly 200 passes through the movable opening 112 along the centerline of the fixed sleeve 110.

[0034] The support frame 120 has a first spring 130 and a second spring 140 fixedly installed at its two ends respectively. The end of the support frame 120 near the second spring 140 is fixedly connected to the inner wall of the fixed end cover 111. The coil 300 is located inside the support frame 120 and between the first spring 130 and the second spring 140.

[0035] The two ends of the vibration assembly 200 are fixedly connected to the first spring 130 and the second spring 140 respectively. Several permanent magnets 400 are fixedly installed inside the vibration assembly 200 in a ring and are evenly distributed. The several permanent magnets 400 surround the outer surface of the coil 300.

[0036] In this invention, several uniformly distributed permanent magnets 400 are arranged in a ring around the outer surface of the coil 300, thus creating a uniform magnetic field inside the vibration component 200. When the coil 300 is energized, it experiences a Lorentz force within this magnetic field. Since the coil 300 is fixed to the fixed sleeve 110 and cannot move, the vibration component 200 experiences a reaction force and will move linearly along the center line of the fixed sleeve 110. Therefore, by changing the direction of the alternating current, the direction of the force on the vibration component 200 is changed, ultimately resulting in the coil 300 driving the vibration component 200 to achieve high-frequency reciprocating motion, i.e., vibration. Therefore, this invention assists patients in expectoration through regular vibration, greatly reducing the patient's discomfort during the expectoration process.

[0037] The vibration component 200 is elastically connected to the support component 100 using the first spring 130 and the second spring 140. The increased elastic connection can improve the buffering effect and reduce the impact on the patient during sputum expectoration.

[0038] Among them, such as Figure 8 As shown, the first spring 130 and the second spring 140 are both made of a combination of a ring and an arc strip. That is, the ring is located in the middle, and one end of multiple arc strips is uniformly fixed to the ring. The arc strips are swirling around the outer circumference of the ring, making full use of the elasticity of the material.

[0039] In a preferred embodiment, as shown in the appendix Figure 1-5 As shown, the vibration assembly 200 includes:

[0040] A vibrating sleeve 210 has its two ends fixedly mounted on a first spring plate 130 and a second spring plate 140, respectively. The end of the vibrating sleeve 210 near the first spring plate 130 is configured as a vibrating end cap 211, and the end near the second spring plate 140 is configured as a fitting opening 212. A plurality of uniformly distributed permanent magnets 400 in a ring are fixedly mounted on the inner wall of the side of the vibrating sleeve 210. The vibrating sleeve 210 is located inside the support frame 120.

[0041] The limiting cylinder 220 has one end fixedly connected to the middle of the inner side of the vibration end cover 211, and the other end of the limiting cylinder 220 is inserted into the middle of the coil 300.

[0042] Inside the vibrating sleeve 210, there are several permanent magnets 400 evenly distributed in a ring around the outer surface of the coil 300. When the coil 300 is energized, it will drive the vibrating sleeve 210 to reciprocate linearly along the center line of the fixed sleeve 110. The limiting sleeve 220 cooperates with the first spring 130 and the second spring 140 on the support frame 120 to prevent the permanent magnets 400 on the vibrating sleeve 210 from detaching from the coil 300.

[0043] In a preferred embodiment, as shown in the appendix Figure 2 and 4 As shown, a fixing seat 113 is fixedly connected to the middle of the inner side of the fixing end cover 111. The end of the coil 300 is fixedly installed on the other end face of the fixing seat 113. The fixing seat 113 and the fixing end cover 111 have a through hole 114 that passes through the coil 300. The coil 300 is connected to the power supply through a wire passing through the through hole 114. The second spring piece 140 is wrapped around the outer surface of the fixing seat 113. The limiting cylinder 220 passes through the coil 300 and is inserted into the interior of the fixing seat 113 so that the external power supply can easily energize the coil 300 and reduce interference to the permanent magnet 400 and the coil 300.

[0044] In a preferred embodiment, as shown in the appendix Figure 2 Appendix Figure 5 and attached Figure 6 As shown, a first rubber pad 500 and a second rubber pad 600 are fixedly installed on the middle of the outer side of the vibration end cap 211 and inside the fixed base 113, respectively. The second rubber pad 600 is in contact with the end face of the limiting cylinder 220. This is to reduce energy reflection by using the first rubber pad 500 and the second rubber pad 600; to absorb high-frequency harmonics by utilizing the nonlinear damping characteristics of rubber, preventing muscle / nerve damage caused by high-frequency vibration; and to protect related components, reduce impact, and also have a noise reduction effect.

[0045] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 7 As shown, the upper shell 150 of the vibratory plate is fixedly installed at the end of the fixed sleeve 110 away from the fixed end cover 111, and the lower shell 160 of the vibratory plate is movably sleeved at the end of the fixed sleeve 110 near the fixed end cover 111.

[0046] In a preferred embodiment, as shown in the appendix Figure 2 and attached Figure 6 As shown, the interior of the limiting cylinder 220 is configured as a long frustum-shaped cavity a, and the middle of the vibrating end cover 211 is provided with a short frustum-shaped cavity b that communicates with the long frustum-shaped cavity a. The fixing sleeve 110 and the upper shell 150 of the vibrating plate are sealed and connected by a sealing ring c.

[0047] The upper shell 150 of the vibrating plate and the fixed sleeve 110 form a closed environment. When the vibrating sleeve 210 inside the fixed sleeve 110 vibrates, the distribution of gas in the closed environment is changed, which is due to air resistance. The design of the long frustum-shaped cavity a and the short frustum-shaped cavity b will increase the air resistance, thereby reducing the impact of the high-frequency vibration of the vibrating sleeve 210. Therefore, the buffering effect can be improved and the impact force on the patient when expectorating sputum can be reduced.

[0048] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 6 and attached Figure 7 As shown, the end face of the vibrating sleeve 210 near the sleeve opening 212 is fixedly mounted on the second spring piece 140 by a fixing washer 700; so that the vibrating sleeve 210 near the sleeve opening 212 can be tightly connected to the second spring piece 140 by the fixing washer 700, avoiding interference from component size.

[0049] The working principle of this utility model is as follows: When in use, because there are several permanent magnets 400 that are evenly distributed in a ring inside the vibrating sleeve 210 and surround the outer surface of the coil 300, the coil 300 is located in a uniform magnetic field.

[0050] When the power supply provides alternating current to the coil 300 through the wire passing through the through hole 114, the coil 300 is subjected to the Lorentz force in the magnetic field. Since the coil 300 is fixed to the fixed sleeve 110 and cannot move, the vibrating sleeve 210 is subjected to the reaction force. That is, the coil 300 drives the vibrating sleeve 210 to perform linear high-frequency reciprocating motion along the center line of the fixed sleeve 110; that is, vibration is achieved.

[0051] The first spring 130 and the second spring 140 are elastically connected to the support assembly 100. The increased elasticity of the connection can improve the cushioning effect and reduce the impact on the patient during sputum expectoration.

[0052] The first rubber pad 500 and the second rubber pad 600 are used to reduce energy reflection; the nonlinear damping properties of rubber are used to absorb high-frequency harmonics to prevent muscle / nerve damage caused by high-frequency vibration; and related components are protected to reduce impact.

[0053] A sealed environment is constructed by using the upper shell 150 of the vibratory plate and the fixed sleeve 110. The air resistance is increased by the shape of the long frustum-shaped cavity a and the short frustum-shaped cavity b, which reduces the impact of the high-frequency vibration of the vibratory sleeve 210.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A voice coil motor for a sputum suction machine, characterized in that: include: Support assembly (100) and vibration assembly (200) located inside support assembly (100); The support component (100) includes: A fixed sleeve (110) is provided, one end of which is configured as a fixed end cap (111). A coil (300) is fixedly installed in the middle of the inner side of the fixed end cap (111). The other end of the fixed sleeve (110) is configured as a movable opening (112). The vibration component (200) located inside the fixed sleeve (110) is movably sleeved outside the coil (300). The movement trajectory of the vibration component (200) passes through the movable opening (112) along the center line of the fixed sleeve (110). A support frame (120) is provided, with a first spring (130) and a second spring (140) fixedly installed at both ends of the support frame (120). The end of the support frame (120) near the second spring (140) is fixedly connected to the inner wall of the fixed end cover (111). The coil (300) is located inside the support frame (120) and between the first spring (130) and the second spring (140). The two ends of the vibration component (200) are fixedly connected to the first spring (130) and the second spring (140) respectively. Several permanent magnets (400) are fixedly installed inside the vibration component (200) in a ring and evenly distributed manner. Several permanent magnets (400) surround the outer surface of the coil (300).

2. The voice coil motor for a sputum suction machine according to claim 1, characterized in that: The vibration assembly (200) includes: A vibrating sleeve (210) has its two ends fixedly mounted on a first spring plate (130) and a second spring plate (140), respectively. The end of the vibrating sleeve (210) near the first spring plate (130) is configured as a vibrating end cap (211), and the end of the vibrating sleeve (210) near the second spring plate (140) is configured as a sleeve opening (212). A plurality of permanent magnets (400) evenly distributed in a ring are fixedly mounted on the inner wall of the side of the vibrating sleeve (210). The vibrating sleeve (210) is located inside the support frame (120). A limiting cylinder (220) is provided, one end of which is fixedly connected to the inner middle of the vibration end cover (211), and the other end of which is inserted into the middle of the coil (300).

3. The voice coil motor for a sputum suction machine according to claim 2, characterized in that: A fixing seat (113) is fixedly connected to the middle of the inner side of the fixing end cap (111). The end of the coil (300) is fixedly installed on the other end face of the fixing seat (113). The fixing seat (113) and the fixing end cap (111) have a through hole (114) that extends through the coil (300). The coil (300) is connected to the power supply through a wire passing through the through hole (114). The second spring piece (140) is wrapped around the outer surface of the fixing seat (113). The limiting cylinder (220) passes through the coil (300) and is inserted into the interior of the fixing seat (113).

4. A voice coil motor for a sputum suction machine according to claim 3, characterized in that: A first rubber pad (500) and a second rubber pad (600) are fixedly installed in the middle of the outer side of the vibration end cover (211) and inside the fixed base (113), respectively. The second rubber pad (600) is in contact with the end face of the limiting cylinder (220).

5. A voice coil motor for a sputum suction machine according to claim 2, characterized in that: The upper shell (150) of the vibratory plate is fixedly installed at the end of the fixed sleeve (110) away from the fixed end cover (111), and the lower shell (160) of the vibratory plate is movably sleeved at the end of the fixed sleeve (110) near the fixed end cover (111).

6. A voice coil motor for a sputum suction machine according to claim 5, characterized in that: The interior of the limiting cylinder (220) is configured as a long frustum-shaped cavity (a), and the middle part of the vibration end cover (211) is provided with a short frustum-shaped cavity (b) that communicates with the long frustum-shaped cavity (a). The fixing sleeve (110) and the upper shell of the vibration plate (150) are connected by a sealing ring (c).

7. A voice coil motor for a sputum suction machine according to claim 2, characterized in that: The end face of the vibrating sleeve (210) near the sleeve opening (212) is fixedly mounted on the second spring plate (140) by a fixing washer (700).

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