Raw water direct drinking life straw

Abstract

The invention relates to the technical field of water purification, in particular to a direct drinking straw which comprises a filter tube. A one-way valve is arranged at a raw water inlet of the filter pipe; an elastic valve plate of the one-way valve is assembled in a shell of the filter pipe; the service life display system comprises a power supply circuit, a counting circuit and a display; the power supply circuit comprises a piezoelectric material sheet, and the piezoelectric material sheet comprises an elastic carrier sheet and a piezoelectric material layer; the power supply circuit further comprises a rechargeable battery, the piezoelectric material layer is in conductive connection with the rechargeable battery, the rechargeable battery is connected with the counting circuit, and the displayer is connected with the counting circuit. The elastic valve plate is detachably connected with the elastic carrier plate through the limiting release mechanism; the limiting release mechanism comprises two magnetic parts; the first magnetic part is linked with the elastic valve plate, and the second magnetic part is arranged on the elastic carrier plate; one side of the elastic carrier sheet is fixed on the side wall of the raw water inlet, the other side of the elastic carrier sheet is suspended, and a second magnetic component is fixed above the suspended side.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, and in particular to a direct drinking straw. Background Art

[0002] A life straw is a straw equipped with a filter element (filter materials such as activated carbon, filter membrane, filter fiber layer, etc.), which is mainly used for drinking water in the wild. Since the water in the wild is not treated, it has certain hazards to human health. Therefore, when walking in the wild, a life straw is needed to purify the water in the wild.

[0003] The filter element of the Life Straw has a service life. When the service life of the filter element reaches its limit, if you continue to use the Life Straw to drink raw water, it is easy to drink raw water that is seriously deteriorating and affecting the life and health of the user. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems existing in the prior art, the present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The invention discloses a raw water direct drinking life straw, comprising a filter tube with a filter element arranged inside, wherein the filter tube has a raw water inlet and a clean water outlet.

[0008] A one-way valve is provided at the raw water inlet of the filter tube;

[0009] The valve plate of the one-way valve is an elastic valve plate, which is assembled in the outer shell of the filter tube, and the opening direction of the elastic valve plate is from the raw water inlet to the clean water outlet;

[0010] It also includes a life display system, which includes a power supply circuit, a counting circuit and a display;

[0011] The power supply circuit includes a piezoelectric material sheet, the piezoelectric material sheet is wrapped with a plastic waterproof layer, and the piezoelectric material sheet includes a sheet-shaped elastic carrier sheet and a piezoelectric material layer that generates electrical energy through deformation;

[0012] The power supply circuit also includes a rechargeable battery, the piezoelectric material layer of the piezoelectric material sheet is conductively connected to the rechargeable battery, the rechargeable battery is connected to the counting circuit, and the display is connected to the counting circuit;

[0013] The counting circuit and the rechargeable battery are arranged in the tube wall interlayer of the filter tube, and the display is arranged outside the filter tube;

[0014] The elastic carrier sheet is arranged at the raw water inlet of the filter tube housing and is located below the one-way valve sheet;

[0015] The elastic valve sheet is directly or indirectly disconnectably connected to the elastic carrier sheet via a limit release mechanism;

[0016] The limit release mechanism comprises two magnetic components, at least one of which is a permanent magnet; in the limit release mechanism, the two magnetic components play a connection relationship that can be disconnected and reconnected;

[0017] The first magnetic component is linked to the elastic valve sheet, and the second magnetic component is arranged on the elastic carrier sheet;

[0018] One side of the elastic carrier sheet is fixed on the side wall of the raw water inlet, and the other side is suspended in the air, which is called the suspended side. A second magnetic component is fixed above the suspended side.

[0019] The above design first sets a one-way valve. When absorbing water, the one-way valve opens and the water absorbed by the filter tube enters from the raw water inlet for filtration. When the water absorption stops, the one-way valve closes the raw water inlet to prevent the filtered water from flowing back into the raw water, prevents repeated water flow, and extends the service life of the filter element in the filter tube.

[0020] Secondly, because the elastic valve sheet does not drive the elastic carrier sheet to move to the limited position, the button drives the elastic carrier sheet to deform. After reaching the limited position, the limit release mechanism disconnects the connection and completes the release of the elastic carrier sheet. After the release, the elastic carrier sheet rebounds due to elasticity, which drives the piezoelectric material layer to produce oscillatory (vibration) deformation and generate electrical energy. It has the advantages of small size, simple structure, low cost, long power generation time, and stable current. The piezoelectric material layer of the piezoelectric material sheet is conductively connected to the rechargeable battery, which will charge the rechargeable battery. The counting circuit can count the number of charges, thereby counting the number of times the filter tube absorbs water, and thus the service life of the filter tube can be counted. The display can show the service life of the filter tube, reminding personnel to pay attention to whether the filter element of the filter tube has reached its life limit when using it, so as to avoid users using expired filter elements to drink raw water.

[0021] Finally, the limit release mechanism includes two magnetic components. Because of the attraction, the valve plate of the one-way valve is more tightly sealed. After the filter tube stops absorbing water, the filtered water is less likely to flow back, preventing repeated water flow and extending the service life of the filter element in the filter tube.

[0022] Preferably, the allowable stroke of the first magnetic component linked to the elastic valve plate is greater than the limited stroke of the second magnetic component restricted by the elastic carrier plate; since the stroke of the magnetic component linked to the elastic valve plate is greater than the limited stroke of the second magnetic component restricted by the elastic carrier plate, the two magnetic components are separated after the elastic valve plate has a certain amplitude, completing the work of the limit release mechanism.

[0023] The piezoelectric material sheet is a sheet-shaped piezoelectric material sheet; the sheet-shaped piezoelectric material sheet includes an elastic carrier sheet and a piezoelectric material layer attached to the elastic carrier sheet.

[0024] The sheet-shaped piezoelectric material sheet includes an elastic carrier sheet and a piezoelectric material layer attached to the elastic carrier sheet; the piezoelectric ceramic sheet has the characteristics of low cost, stable material supply, and easy mass production.

[0025] Furthermore, the piezoelectric material sheet is a piezoelectric ceramic sheet with at least two layers stacked up and down; the piezoelectric material sheet is generated by stacking at least two layers of piezoelectric ceramic sheets. Although it will appropriately reduce the duration of oscillatory (vibration) deformation, it can enhance the current output or voltage output in a short time, and it is more convenient for the counting circuit to count the service life of the filter element.

[0026] The elastic carrier of the piezoelectric ceramic sheet is made of an elastic steel sheet, a copper layer is arranged on the elastic steel sheet, and a piezoelectric ceramic layer is formed on the copper layer; the piezoelectric ceramic sheet no longer uses the traditional copper sheet, but an elastic steel sheet. Although the conductivity is reduced, the elasticity is obtained, which makes it easy to generate a longer-lasting vibration with a larger amplitude, and generate a more lasting and stable current output.

[0027] The piezoelectric material sheet is set to be long and strip-shaped; the oscillation output current of the long and strip-shaped piezoelectric material sheet is more persistent and stable, and it is more convenient for the counting circuit to count the number of times the filter element is used, so as to know the life of the filter element.

[0028] Preferably, the filter tube is also provided with a gauze for filtering fine sand wrapped at the raw water inlet to prevent the sand and gravel in the raw water from affecting the sealing effect of the one-way valve.

[0029] Preferably, the weight of the second magnetic component is a magnetic component with a mass greater than 2g and less than 15g. According to experiments, this weight is easy to vibrate but will not cause damage to the equipment due to excessive weight.

[0030] The second magnetic component is a soft magnetic component, and the first magnetic component is a permanent magnet.

[0031] Avoid the second magnetic component causing unnecessary magnetic field changes when oscillating, thereby hindering the oscillation action.

[0032] A preferred solution is:

[0033] The first magnetic component is fixedly connected to the button, and the second magnetic component is fixedly connected to the elastic carrier sheet, and the second magnetic component is used as a counterweight to enhance the vibration (oscillation) of the elastic carrier sheet.

[0034] A buffer layer is arranged between the two magnetic components; a buffer layer is arranged between the two magnetic components.

[0035] It is used to reduce or avoid collision damage between magnetic parts during resetting. It also has a muffler effect and reduces the noise that may be generated during operation.

[0036] More preferably, the buffer layer is a rubber sleeve which is sleeved on one of the magnetic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0038] Figure 1 A schematic diagram of the internal structure principle of a raw water direct drinking life straw according to an embodiment of the present invention;

[0039] Figure 2 A raw water direct drinking life straw according to an embodiment of the present invention Figure 1 A schematic diagram of the structure at A;

[0040] Figure 3 A schematic diagram of the overall structure of a raw water direct drinking life straw according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more understandable, the specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0044] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in less than one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0045] Example 1

[0046] Reference Figure 1-Figure 3 The raw water direct drinking life straw comprises a filter tube 1 with a filter element arranged inside, and the filter tube 1 has a raw water inlet 11 and a clean water outlet 12.

[0047] A one-way valve is provided at the raw water inlet 11 of the filter tube 1;

[0048] The valve plate of the one-way valve is an elastic valve plate 2, which is assembled in the outer shell of the filter tube 1. The opening direction of the elastic valve plate 2 is from the raw water inlet 11 to the clean water outlet 12.

[0049] It also includes a life display system, which includes a power supply circuit, a counting circuit and a display 31;

[0050] The power supply circuit includes a piezoelectric material sheet, the piezoelectric material sheet is wrapped with a plastic waterproof layer, and the piezoelectric material sheet includes a sheet-shaped elastic carrier sheet 31 and a piezoelectric material layer 32 that generates electrical energy through deformation;

[0051] The power supply circuit also includes a rechargeable battery, the piezoelectric material layer 32 of the piezoelectric material sheet is conductively connected to the rechargeable battery, the rechargeable battery is connected to the counting circuit, and the display 31 is connected to the counting circuit;

[0052] The counting circuit and the rechargeable battery are arranged in the tube wall interlayer of the filter tube 1, and the display 31 is arranged outside the filter tube 1;

[0053] The elastic carrier sheet 31 is arranged at the raw water inlet 11 of the outer shell of the filter tube 1 and is located below the one-way valve sheet;

[0054] The elastic valve sheet 2 is directly or indirectly disconnectably connected to the elastic carrier sheet 31 via a limit release mechanism;

[0055] The limit release mechanism comprises two magnetic components, at least one of which is a permanent magnet; in the limit release mechanism, the two magnetic components play a connection relationship that can be disconnected and reconnected;

[0056] The first magnetic component 41 is linked to the elastic valve sheet 2, and the second magnetic component 42 is arranged on the elastic carrier sheet 31;

[0057] One side of the elastic carrier sheet 31 is fixed on the side wall of the raw water inlet 11, and the other side is suspended in the air, which is called the suspended side. A second magnetic component 42 is fixed above the suspended side.

[0058] First, a one-way valve is set. When absorbing water, the one-way valve opens and the water absorbed by the filter tube 1 enters from the raw water inlet 11 for filtration. When absorbing water stops, the one-way valve closes the raw water inlet 11 to prevent the filtered water from flowing back into the raw water, prevent repeated water filtering, extend the service life of the filter element in the filter tube 1, and reduce the possibility of users drinking raw water.

[0059] Secondly, during the process of absorbing water, the elastic valve sheet 2 does not drive the elastic carrier sheet 31 to move to the limited position, so the key drives the elastic carrier sheet 31 to deform. After reaching the limited position, the limit release mechanism disconnects the connection relationship and completes the release of the elastic carrier sheet 31. After the elastic carrier sheet 31 is released, it rebounds due to elasticity, and then drives the piezoelectric material layer 32 to produce oscillatory (vibration) deformation, generating electrical energy, which has the advantages of small size, simple structure, low cost, long power generation time, and stable current. The piezoelectric material layer 32 of the piezoelectric material sheet is conductively connected to the rechargeable battery, which will charge the rechargeable battery. The counting circuit can count the number of charges, thereby counting the number of times the filter tube 1 absorbs water, so that the service life of the filter tube 1 can be counted, and the display 31 can display the service life of the filter tube 1, reminding the personnel to pay attention to whether the filter element of the filter tube 1 has reached the life limit when using it, so as to avoid the user from drinking raw water with an invalid filter element.

[0060] Finally, the limit release mechanism includes two magnetic components. Because of the attraction, the valve plate of the one-way valve has a stronger sealing performance. After the filter tube 1 stops absorbing water, the filtered water is less likely to flow back, preventing repeated water flow, extending the service life of the filter element in the filter tube 1, and reducing the possibility of users drinking raw water.

[0061] The allowable stroke of the first magnetic component 41 linked to the elastic valve plate 2 is greater than the limited stroke of the second magnetic component 42 restricted by the elastic carrier plate 31; since the stroke of the magnetic component linked to the elastic valve plate 2 is greater than the limited stroke of the second magnetic component 42 restricted by the elastic carrier plate 31, the two magnetic components are separated after the elastic valve plate 2 has a certain amplitude, completing the work of the limit release mechanism.

[0062] The piezoelectric material sheet is a sheet-shaped piezoelectric material sheet; the sheet-shaped piezoelectric material sheet includes an elastic carrier sheet 31 and a piezoelectric material layer 32 attached to the elastic carrier sheet 31; the piezoelectric ceramic sheet has the characteristics of low cost, stable material supply, and easy mass production.

[0063] The piezoelectric material sheet is a piezoelectric ceramic sheet with at least two layers stacked up and down. The piezoelectric material sheet is generated by stacking at least two layers of piezoelectric ceramic sheets. Although the duration of oscillatory (vibration) deformation will be appropriately reduced, the current output or voltage output in a short time can be enhanced, which makes it easier for the counting circuit to count the service life of the filter element.

[0064] The elastic carrier sheet 31 of the piezoelectric ceramic sheet is made of an elastic steel sheet, a copper layer is arranged on the elastic steel sheet, and a piezoelectric ceramic layer is formed on the copper layer; the piezoelectric ceramic sheet no longer uses the traditional copper sheet, but an elastic steel sheet. Although the conductivity is reduced, the elasticity is obtained, which makes it easy to generate a longer-lasting vibration with a larger amplitude, and generate a more lasting and stable current output.

[0065] The piezoelectric material sheet is set to be long and strip-shaped; the oscillation output current of the long and strip-shaped piezoelectric material sheet is more persistent and stable, and it is more convenient for the counting circuit to count the number of times the filter element is used, so as to know the life of the filter element.

[0066] When in use, the one-way valve opens during water absorption, and the water absorbed by the filter tube 1 enters from the raw water inlet 11 for filtration. During the process of water absorption, the elastic valve sheet 2 does not drive the elastic carrier sheet 31 to move to the limited position, so the key drives the elastic carrier sheet 31 to deform. After reaching the limited position, the limit release mechanism disconnects the connection relationship and completes the release of the elastic carrier sheet 31. After the elastic carrier sheet 31 is released, it rebounds due to elasticity, and then drives the piezoelectric material layer 32 to produce oscillating (vibrating) deformation to generate electrical energy. It has the advantages of small size, simple structure, low cost, long power generation time, and stable current. The piezoelectric material layer 32 of the piezoelectric material sheet is conductively connected to the rechargeable battery, which will charge the rechargeable battery. The counting circuit can count the number of charging times, thereby counting the number of times the filter tube 1 absorbs water, thereby being able to count the service life of the filter tube 1. The display 31 can display the service life of the filter tube 1 to remind people when using it to pay attention to whether the filter element of the filter tube 1 has reached its life limit, to avoid people using an expired filter element to drink raw water. When the raw water stops absorbing water, the one-way valve closes the raw water inlet 11 to prevent the filtered water from flowing back into the raw water.

[0067] Example 2

[0068] Reference Figure 2 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0069] The filter tube 1 is also provided with a gauze for filtering fine sand which wraps the raw water inlet 11, so as to prevent the sand and gravel in the raw water from affecting the sealing effect of the one-way valve.

[0070] The weight of the second magnetic component 42 is a magnetic component with a mass greater than 2g and less than 15g. According to experiments, this weight is easy to vibrate but will not cause the equipment to be easily damaged due to being too heavy.

[0071] The second magnetic component 42 is a soft magnetic component, and the first magnetic component 41 is a permanent magnet, so as to avoid the second magnetic component 42 causing unnecessary magnetic field changes and hindering the oscillation action when oscillating.

[0072] The first magnetic component 41 is fixedly connected to the button, and the second magnetic component 42 is fixedly connected to the elastic carrier sheet 31 . The second magnetic component 42 is used as a counterweight to enhance the vibration (oscillation) of the elastic carrier sheet 31 .

[0073] A buffer layer is arranged between the two magnetic components; a buffer layer is arranged between the two magnetic components.

[0074] It is used to reduce or avoid collision damage between magnetic parts during resetting. It also has a muffler effect and reduces the noise that may be generated during operation.

[0075] More preferably, the buffer layer is a rubber sleeve which is sleeved on one of the magnetic components.

[0076] When in use, the gauze blocks the sand and gravel to prevent the sand and gravel in the raw water from affecting the sealing effect of the one-way valve. The second magnetic component 42 is a soft magnetic component, and the first magnetic component 41 is a permanent magnet to prevent the second magnetic component 42 from causing unnecessary magnetic field changes and hindering the oscillation action when oscillating. A buffer layer is arranged between the two magnetic components to have a sound-absorbing effect and reduce the noise that may be generated during operation.

[0077] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., mounting arrangements, use of materials, color, directional changes, etc., without substantially departing from the novel angles and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0078] Furthermore, in order to provide a concise description of exemplary embodiments, all features of the actual embodiment may not be described, namely those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0079] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A raw water direct drinking life straw, comprising a filter tube with a filter element arranged inside, the filter tube having a raw water inlet and a clean water outlet, characterized in that: A one-way valve is provided at the raw water inlet of the filter tube; The valve plate of the one-way valve is an elastic valve plate, which is assembled in the outer shell of the filter tube, and the opening direction of the elastic valve plate is from the raw water inlet to the clean water outlet; It also includes a life display system, which includes a power supply circuit, a counting circuit and a display; The power supply circuit includes a piezoelectric material sheet, the piezoelectric material sheet is wrapped with a plastic waterproof layer, and the piezoelectric material sheet includes a sheet-shaped elastic carrier sheet and a piezoelectric material layer that generates electrical energy through deformation; The power supply circuit also includes a rechargeable battery, the piezoelectric material layer of the piezoelectric material sheet is conductively connected to the rechargeable battery, the rechargeable battery is connected to the counting circuit, and the display is connected to the counting circuit; The counting circuit and the rechargeable battery are arranged in the tube wall interlayer of the filter tube, and the display is arranged outside the filter tube; The elastic carrier sheet is arranged at the raw water inlet of the filter tube housing and is located below the one-way valve sheet; The elastic valve sheet is directly or indirectly disconnectably connected to the elastic carrier sheet via a limit release mechanism; The limit release mechanism comprises two magnetic components, at least one of which is a permanent magnet; in the limit release mechanism, the two magnetic components play a connection relationship that can be disconnected and reconnected; The first magnetic component is linked to the elastic valve sheet, and the second magnetic component is arranged on the elastic carrier sheet; One side of the elastic carrier sheet is fixed on the side wall of the raw water inlet, and the other side is suspended in the air, which is called the suspended side. A second magnetic component is fixed above the suspended side.

2. The raw water direct drinking life straw according to claim 1, characterized in that: The permissible stroke of the first magnetic component linked to the elastic valve sheet is greater than the limited stroke of the second magnetic component limited by the elastic carrier sheet; Since the stroke of the magnetic component linked to the elastic valve plate is greater than the limited stroke of the second magnetic component limited by the elastic carrier plate, the two magnetic components are separated after the elastic valve plate has a certain amplitude, completing the work of the limit release mechanism.

3. The raw water direct drinking life straw according to claim 1, characterized in that: The piezoelectric material sheet is a sheet-shaped piezoelectric material sheet; The sheet-shaped piezoelectric material sheet comprises an elastic carrier sheet and a piezoelectric material layer attached to the elastic carrier sheet.

4. The raw water direct drinking life straw according to claim 1, characterized in that: The piezoelectric material sheet is a piezoelectric ceramic sheet with at least two layers stacked up and down.

5. The raw water direct drinking life straw according to claim 1, characterized in that: The elastic carrier sheet of the piezoelectric ceramic sheet adopts an elastic steel sheet, a copper layer is arranged on the elastic steel sheet, and a piezoelectric ceramic layer is regenerated on the copper layer.

6. The raw water direct drinking life straw according to claim 1, characterized in that: The piezoelectric material sheet is arranged in a long strip shape.

7. The raw water direct drinking life straw according to claim 1, characterized in that: The filter tube is also provided with a gauze which wraps the filter fine sand of the raw water inlet.

8. The raw water direct drinking life straw according to any one of claims 1 to 8, characterized in that: The weight of the second magnetic component is a magnetic component with a mass greater than 2g and less than 15g.

9. The raw water direct drinking life straw according to any one of claims 1 to 8, characterized in that: The first magnetic component is fixedly connected to the button, and the second magnetic component is fixedly connected to the elastic carrier sheet, and the second magnetic component is used as a counterweight to enhance the vibration of the elastic carrier sheet; A buffer layer is arranged between the two magnetic components.

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