Multi-cylinder pulse water supply structure of electric oral irrigator and working method of multi-cylinder pulse water supply structure

Abstract

The invention relates to a multi-cylinder pulse water supply structure of an electric oral irrigator and a working method of the multi-cylinder pulse water supply structure, and the pulse water supply structure comprises a body, a water inlet channel and a water outlet channel which are arranged on the body, and a multi-tympanic-membrane water supply pump which is arranged on the body and used for pumping water through the water inlet channel and providing pulse type water supply for the water outlet channel, the multi-tympanic-membrane water feeding pump is internally provided with at least two groups of tympanic-membrane assemblies for achieving water pumping and water pumping, and the tympanic-membrane assemblies are asymmetrically arranged in the circumferential direction in the body so that the water outlet channel can provide pulse type water outlet. According to the multi-cylinder pulse water supply structure of the electric oral irrigator, at least two groups of tympanic membrane assemblies are arranged in the multi-tympanic membrane water supply pump, and the tympanic membrane assemblies are asymmetrically arranged in the circumferential direction in the body, so that supplied water with strong pulse feeling is output in the water outlet channel, and the multi-cylinder pulse water supply structure of the electric oral irrigator is beneficial to simplifying the mechanism and reducing the cost; noise generated by mechanism action is reduced, pulse type water supply is achieved, and the pulse water outlet effect of the oral irrigator is achieved.

Description

Technical field:

[0001] The invention relates to a water flosser product, in particular to a multi-cylinder pulse water supply structure of an electric water flosser and a working method thereof. Background technology:

[0002] The applicant has successively applied for a number of electric water flosser structures in the field of electric water flossers, such as the invention titled: Oral Cleaning Appliance, published in December 2023, with the publication number CN221998066U, comprising a body and a shell having a water inlet and outlet working chamber on the body, the shell being provided with a water inlet end and a water outlet end connected to the water inlet and outlet working chamber and having a one-way valve, the water inlet and outlet working chamber being provided with an elastic sheet body capable of elastic deformation, a crank-connecting rod mechanism driven to reciprocate by a motor being provided in the body, the connecting rod free end of the crank-connecting rod mechanism being connected to the elastic The sheet body is connected to drive the elastic sheet body to reciprocately compress the water inlet and outlet working chamber; when the elastic sheet body is in an undeformed state, the connecting rod is at the lower dead point position; when the connecting rod is at the upper dead point position, the elastic sheet body is at the maximum deformation amount, and the compression amount of the water outlet working chamber is the largest; although the oral cleaning device is beneficial to improving the working efficiency of the motor; but because the driving mechanism is driven by the gear plate to drive the crank connecting rod mechanism, the noise generated by the driving mechanism is relatively large, the efficiency of the pump is still low, and the cost is high, which is not conducive to user use, and the mechanism is conducive to achieving pulsed water discharge.

[0003] In addition, in order to overcome the problems of high noise and low pump efficiency, a diaphragm pump can be considered. However, the existing diaphragm pump outputs a fluid with a gentle water pressure, which cannot meet the pulse water discharge effect of the oral irrigator. Summary of the invention:

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multi-cylinder pulse water supply structure of an electric water flosser and a working method thereof. The multi-cylinder pulse water supply structure of an electric water flosser is reasonably designed, which is conducive to simplifying the structure, reducing costs and outputting pulse water while reducing noise.

[0005] The technical solution adopted by the present invention is as follows: a multi-cylinder pulse water supply structure of an electric water flosser, characterized in that it includes a main body, a water inlet channel and a water outlet channel arranged on the main body, and a multi-suction and discharge mechanism water supply pump arranged on the main body for pumping water through the water inlet channel and providing pulse water supply to the water outlet channel, the multi-suction and discharge mechanism water supply pump has at least two groups of suction and discharge components for pumping water, and each suction and discharge component is asymmetrically arranged in the circumferential direction of the main body to enable the water outlet channel to provide pulse water outlet.

[0006] Furthermore, the main body further comprises a motor support, a tympanic membrane support, a valve body, an upper cover and water inlet and outlet joints which are connected in sequence, a motor being fixedly mounted on the rear end of the motor support, a driving shaft of the motor passing through the motor support and being fixedly connected to a rotating shaft connecting block, a swing block being mounted in the tympanic membrane support body, a swing shaft being connected between the rotating shaft connecting block and the swing block, a tympanic membrane disk being mounted on the tympanic membrane support, the tympanic membrane disk having at least two concave tympanic membranes asymmetrically arranged on the circumference of the driving shaft and a tympanic membrane rod fixedly connected to the outer bottom surface of the concave tympanic membrane, a limiting hole being provided on the swing block for limiting the telescopic movement of the guiding tympanic membrane rod, two one-way valves facing the concave tympanic membrane being mounted on the valve body, water inlet and outlet joints and the upper cover being provided with water inlet channels and water outlet channels isolated from each other, a water through valve cavity being provided on the valve body which is connected with the water inlet channel and the water outlet channel, the two one-way valves intermittently connect or disconnect the water through valve cavity, and the concave tympanic membrane and the tympanic membrane rod constitute the suction and discharge assembly.

[0007] Furthermore, the first end of the above-mentioned rotating shaft connecting block has a special-shaped hole that can be socketed with the free end of the motor drive shaft and realize synchronous rotation of the rotating shaft connecting block. The second end of the rotating shaft connecting block has a first slot hole that is eccentrically and obliquely arranged relative to the motor drive shaft. The first end of the swing shaft is inserted in the first slot hole with a gap fit, and the second end of the swing shaft is inserted in the second slot hole of the swing block with an oblique and gap fit, thereby driving the swing block to swing when the motor drive shaft rotates.

[0008] Furthermore, the concave eardrum on the eardrum disc is coaxial with the axis of the eardrum rod, and the axis of the concave eardrum and the eardrum rod is parallel to the axis of the motor drive shaft.

[0009] Furthermore, the axis lines of the concave eardrum and eardrum rod on the eardrum disc are unevenly distributed in the circumferential direction.

[0010] Furthermore, the lower surface of the valve body is provided with a first sink groove cavity which is opposite to the two concave tympanic membranes and matched with each other, the upper surface of the valve body is provided with a second sink groove cavity which is opposite to the first sink groove cavity, the bottom of the first sink groove cavity is provided with a mounting hole of a one-way valve which passes through the second sink groove cavity and a first water passing hole located around the mounting hole of the one-way valve, the one-way valve includes a valve membrane which is provided in the first sink groove cavity and can cover the first water passing hole, a valve stem fixedly connected to the valve membrane and a convex portion provided on the valve stem and located in the second sink groove cavity, the valve stem is installed in the mounting hole of the one-way valve and the axial movement of the valve stem is limited by the convex portion.

[0011] Furthermore, a third trough cavity is provided on the upper surface of the valve body, and second water holes penetrating to the lower surface of the valve body are respectively provided on both sides of the bottom of the third trough cavity, and the two second water holes are respectively connected to the two first trough cavities, and a water flow membrane capable of covering the two second water flow holes is installed in the third trough cavity.

[0012] Furthermore, a sealing plate is installed between the upper cover and the upper surface of the valve body, a sealing plate center through hole is provided in the center of the sealing plate, and a sealing plate side through hole is provided on the sealing plate beside the sealing plate center through hole, the end of the water outlet channel is connected to the third trough cavity, and the end of the water inlet channel is connected to the second trough cavity.

[0013] Furthermore, the coaxial sleeve on the upper cover is provided with an inner tube and an outer tube spaced apart from each other, the inner tube on the center portion of the inlet and outlet water joint penetrates into the inner tube of the upper cover to form a water outlet channel, and the annular cavity formed between the inner tube and the outer tube is connected to the outlet end of the water inlet pipe on the inlet and outlet water joint to form a water inlet channel.

[0014] The specific working method of the multi-cylinder pulse water supply structure of the electric water flosser of the present invention is that the rotation of the motor drives the driving shaft of the motor to rotate, and then drives the rotating shaft connecting block to rotate. The rotation of the rotating shaft connecting block drives the swing shaft to drive the swing block to swing. The swinging of the swing block drives the extension and retraction of two tympanic membrane rods asymmetrically arranged on the circumference of the driving shaft, so that the concave tympanic membrane produces compression and extension movements, thereby realizing the intermittent connection or disconnection of the water valve cavity by the one-way valve, so that water enters from the water inlet channel and then enters the water valve cavity, and then the water is output from the water outlet channel by the extension movement of the concave tympanic membrane.

[0015] The multi-cylinder pulse water supply structure of the electric water flosser of the present invention arranges at least two groups of suction and discharge components in the water supply pump of the multi-suction and discharge mechanism, and each suction and discharge component is asymmetrically arranged in the circumferential direction of the body, so as to output water with a strong pulse sense in the water outlet channel. The present invention is conducive to simplifying the mechanism and reducing costs, while reducing the noise generated by the action of the mechanism and realizing pulse water supply, thereby meeting the pulse water outlet effect of the water flosser. Description of the drawings:

[0016] Figure 1 is a stereogram of the present invention;

[0017] Figure 2 is a cross-sectional view of the present invention through the axis of the water inlet pipe and the drive shaft;

[0018] Figure 3 is a cross-sectional view of the present invention through a concave eardrum and the axis of the drive shaft;

[0019] Figure 4 is a cross-sectional view of the tympanic membrane disc mounted on the tympanic membrane support;

[0020] Figure 5 It is an exploded view of the present invention from one perspective;

[0021] Figure 6 , 7 yes Figure 5 A partial view of

[0022] Figure 8 is an exploded view of the present invention from another perspective;

[0023] Fig. 9 yes Figure 8 A partial view of

[0024] Fig.10 It is a schematic diagram of the connection structure of the swing block, the swing shaft and the rotating shaft connecting block;

[0025] Fig.11 It is a water flow curve diagram of a number of concave tympanic membranes evenly distributed in the circumferential direction of the drive shaft;

[0026] Fig.12 It is a curve diagram of the superposition of water flow of several concave eardrums evenly distributed in the circumferential direction of the drive shaft;

[0027] Fig.13 It is a curve diagram of a pulse water flow achieved by electronic switching;

[0028] Fig.14 It is a water flow curve diagram of the present application in which an asymmetric concave eardrum is arranged in the circumferential direction of the drive shaft;

[0029] Fig.15 It is a curve diagram after superposition of water flow rate when an asymmetric concave eardrum is arranged in the circumferential direction of the driving shaft in the present application;

[0030] Fig.16 , Fig.17 Schematic diagrams of two other embodiments of the arrangement of the suction and exhaust components in the circumferential direction. Specific implementation method:

[0031] The method of the present invention is further described in detail below in conjunction with the embodiments. It should be particularly noted that the protection scope of the present invention should include but is not limited to the technical content disclosed in the embodiments.

[0032] The multi-cylinder pulse water supply structure of the electric water flosser of the present invention comprises a body 01, a water inlet channel 15 and a water outlet channel 16 arranged on the body 01, and a multi-suction and discharge mechanism water supply pump 02 (or can be called a multi-drum membrane component water supply pump or a multi-telescopic chamber component water supply pump, that is, realizing multiple cavity water pumping) arranged on the body for pumping water through the water inlet channel and providing pulsed water supply to the water outlet channel. The multi-suction and discharge mechanism water supply pump has at least two groups of suction and discharge components 03 (or can be called a tympanic membrane component or a telescopic chamber component, that is, realizing water pumping and discharge), and each suction and discharge component is asymmetrically arranged in the circumferential direction of the body ( or uneven distribution) so that the outlet channel provides pulsed water outlet; each suction and discharge component is asymmetrically arranged in the circumferential direction of the body so that the outlet channel provides pulsed water outlet means that in the circumferential direction of the body, the center angles of two adjacent suction and discharge components are different. For example, if the body has only two groups of suction and discharge components, then the center angles of the two groups of suction and discharge components are not 180 degrees, but can be 120 degrees or 150 degrees, etc.; if the body has three groups of suction and discharge components, then the adjacent center angles of the first, second and third groups of suction and discharge components cannot be 120 degrees, 120 degrees and 120 degrees, but can be 90 degrees, 50 degrees and 220 degrees, etc. (such as Fig.16 , 17 shown).

[0033] Since at least two groups of suction and discharge components are arranged in the water supply pump with a multi-suction and discharge mechanism, and each suction and discharge component is asymmetrically arranged in the circumferential direction of the body, water supply with a strong pulse sense is output in the water outlet channel, which is conducive to realizing pulsed water supply. At the same time, the present invention simplifies the body structure, reduces the cost, and reduces the noise generated by the action of the mechanism, and meets the effect of pulse water outlet of the water flosser.

[0034] The main body of the present invention also includes a motor bracket 1, a tympanic membrane bracket 2, a valve body 3, an upper cover 4 and an inlet and outlet water joint 5 which are connected in sequence. A motor 6 is fixedly installed at the rear end of the motor bracket 1, and the driving shaft 7 of the motor passes through the motor bracket 1 and is connected to the rotating shaft connecting block 8.

[0035] The first end of the rotating shaft connecting block 8 has a special-shaped hole 18 that can be sleeved with the free end of the motor drive shaft and realize the synchronous rotation of the rotating shaft connecting block (the special-shaped hole 18 can be a polygonal hole or a round hole with a keyway. When the drive shaft 7 is inserted into the special-shaped hole 18, the rotating shaft connecting block 8 can be driven to rotate synchronously when the motor rotates). The second end of the rotating shaft connecting block has a first slotted hole 19 that is eccentric and inclined relative to the motor drive shaft. A swing shaft 10 is connected between the rotating shaft connecting block 8 and the swing block 9. The first end of the swing shaft 10 is gap-fitted. The first end of the swing shaft 10 is inserted into the first slot 19 with a clearance fit (i.e., the first end of the swing shaft 10 is loosely fitted with the first slot 19, and the swing shaft 10 can be freely extended and retracted in the first slot 19), and the second end of the swing shaft is inserted into the second slot 37 of the swing block 9 with an inclination and a clearance fit (i.e., the second end of the swing shaft 10 is loosely fitted with the second slot 37, and the swing shaft 10 can be freely extended and retracted in the second slot 37), and the swing block 9 is installed in the tympanic membrane support body 2. When driven by the motor, the motor drive shaft rotates, driving the swing block to swing.

[0036] The tympanic membrane support 2 is provided with a tympanic membrane plate 11, which has two concave tympanic membranes 12 which are asymmetrically arranged (or unevenly distributed) on the circumference of the driving shaft (the asymmetry on the circumference of the driving shaft means that the two concave tympanic membranes are not evenly distributed in the circumferential direction of the driving shaft 7, but are asymmetrically and unevenly distributed) and a tympanic membrane rod 13 fixedly connected to the outer bottom surface of the concave tympanic membrane (the concave tympanic membrane 12 and the tympanic membrane rod 13 constitute the suction and discharge assembly 03), and the concave tympanic membrane 12 on the tympanic membrane plate 11 and the axis of the tympanic membrane rod 13 are fixedly connected to the outer bottom surface of the concave tympanic membrane. The two concave eardrums 12 and the eardrum rod 13 on the eardrum disk 11 are coaxial, and the axis lines of the concave eardrums 12 and the eardrum rod 13 are parallel to the axis line of the motor drive shaft; the axis lines of the two concave eardrums 12 and the eardrum rod 13 on the eardrum disk 11 are offset by 90-150 degrees in the circumferential direction, and the axis lines of the two limiting holes on the swing block are also offset by 90-150 degrees in the circumferential direction; preferably, the axis lines of the two concave eardrums and the eardrum rod on the eardrum disk are offset by 120 degrees in the circumferential direction, and the axis lines of the two limiting holes on the swing block are also offset by 120 degrees in the circumferential direction (such as Figure 4 shown).

[0037] Of course, the axis lines of the two concave eardrums and eardrum rods on the eardrum plate may be displaced by 90 degrees, 100 degrees, 130 degrees or 150 degrees in the circumferential direction, and the axis lines of the two limiting holes on the swing block may also be displaced by 90 degrees, 100 degrees, 130 degrees or 150 degrees in the circumferential direction, or three concave eardrums may be evenly arranged within a circumferential dislocation range of 150 degrees (i.e., two adjacent concave eardrums are displaced by 75 degrees, such as Fig.16 As shown), the remaining 210 degrees in the circumferential direction are not provided with a concave eardrum and eardrum rod; or as Fig.17 As shown, the three concave eardrums are displaced circumferentially by 50, 90, and 220 degrees.

[0038] The swing block 9 is provided with a limiting hole for limiting the telescopic movement of the guiding tympanic membrane rod. Two one-way valves 14 facing the concave tympanic membrane are installed on the valve body 3. Specifically, the lower surface of the valve body is provided with a first sinking groove cavity 20 facing the two concave tympanic membranes and matching each other, and the upper surface of the valve body is provided with a second sinking groove cavity 21 facing the first sinking groove cavity. The bottom of the first sinking groove cavity is provided with a mounting hole 22 of the one-way valve passing through the second sinking groove cavity and a first water hole 23 located around the mounting hole of the one-way valve. The one-way valve 14 includes a valve membrane 35 arranged in the first sinking groove cavity and capable of covering the first water hole, a valve stem 24 fixedly connected to the valve membrane, and a convex portion 25 arranged on the valve stem and located in the second sinking groove cavity. The one-way valve 14 is made of rubber Or made of silicone material, the valve stem 24 is installed in the mounting hole 22 of the one-way valve and the axial movement of the valve stem is limited by the protrusion 25. The valve stem can be limited in the mounting hole 22 of the one-way valve through the cooperation of the protrusion 25 and the valve membrane, that is, the distance between the protrusion 25 and the valve membrane 35 on the valve stem 24 is equal to or slightly less than the length of the channel of the mounting hole 22, so that the valve membrane 35 can be close to the bottom of the groove of the first sink groove cavity 20. When negative pressure is formed in the concave cavity surrounded by the concave tympanic membrane 12 and the first sink groove cavity 20 (that is, the concave tympanic membrane 12 stretches, and the valve stem 24 is pulled away from the upper cover by the swing block), the negative pressure can push the valve membrane 35 away from the first water hole 23, and the water in the second sink groove cavity 21 passes through the first water hole 23 to inject water into the concave cavity.

[0039] A third sink groove cavity 26 is provided at the center of the upper surface of the above-mentioned valve body (the third sink groove cavity 26 is not connected with the second sink groove cavity 21), and second water holes 27 penetrating to the lower surface of the valve body are respectively provided on both sides of the groove bottom of the third sink groove cavity. The two second water holes 27 are respectively connected with the two first sink groove cavities 20. A water flow membrane 28 capable of covering the two second water flow holes is installed in the third sink groove cavity 26. When positive pressure is formed in the concave cavity surrounded by the concave tympanic membrane 12 and the first sink groove cavity 20 (that is, the concave tympanic membrane 12 is compressed, and the valve stem 24 is pushed away from the motor by the swing block), the pressure can push the water flow membrane 28, so that water is injected from the concave cavity through the second water flow holes 27 into the third sink groove cavity 26. At this time, due to the positive pressure, the valve membrane 35 covers the first water flow hole 23, so that water cannot flow to the second sink groove cavity 21.

[0040] A water inlet channel 15 and a water outlet channel 16 isolated from each other are provided on the water inlet and outlet joints 5 and the upper cover 4, a water valve cavity 17 (the water valve cavity 17 includes the first sink groove cavity 20, the second sink groove cavity 21 and the third sink groove cavity 26) connected with the water inlet channel and the water outlet channel is provided on the valve body 3, and the two one-way valves 14 intermittently connect or disconnect the water valve cavity 17, that is, as mentioned above, when negative pressure is formed in the concave cavity surrounded by the concave tympanic membrane 12 and the first sink groove cavity 20 (that is, the concave tympanic membrane 12 stretches, and the valve stem 24 is pulled away from the upper cover by the swing block), the negative pressure can push the valve membrane 35 away from the first water hole 23 (the one-way valve 14 makes the water passage hole 23 open). When the concave cavity surrounded by the concave eardrum 12 and the first sink cavity 20 forms a positive pressure (that is, the concave eardrum 12 is compressed, and the valve stem 24 is pushed away from the motor by the swing block), the pressure can push the water-passing diaphragm 28 (made of rubber or silicone), so that water is injected from the concave cavity through the second water-passing hole 27 to the third sink cavity 26. At this time, due to the positive pressure, the valve membrane 35 covers the first water-passing hole 23 (the one-way valve 14 makes the water-passing valve cavity 17 partially connected and partially disconnected), so that water cannot flow to the second sink cavity 21.

[0041] In order to achieve better sealing, a sealing plate 29 is installed between the upper cover 4 and the upper surface of the valve body 3. A sealing plate center through hole 30 is provided in the center of the sealing plate 29, and a sealing plate side through hole 31 is provided on the sealing plate next to the sealing plate center through hole. The end of the water outlet channel is connected to the third trough cavity, and the end of the water inlet channel is connected to the second trough cavity.

[0042] An inner tube 32 and an outer tube 33 are coaxially sleeved on the upper cover 4 with a space between them. The upper inner tube 38 at the center of the water inlet and outlet joint penetrates into the inner tube 32 of the upper cover to form a water outlet channel 16. The annular cavity 34 formed between the inner tube and the outer tube is connected to the outlet end of the water inlet pipe 36 on the water inlet and outlet joint to form a water inlet channel 15. The water inlet channel 15 and the water outlet channel 16 are not connected in the upper cover and the water inlet and outlet joint, and intermittent on and off is only achieved through a one-way valve on the valve body.

[0043] During specific operation, when the eardrum rod 13 is driven by the swing block 9 to be pulled toward the motor side (i.e., away from the upper cover side), the concave eardrum stretches, i.e., the concave cavity in the concave eardrum expands, and water enters the concave cavity of the concave eardrum through the water inlet pipe 36, the annular cavity 34, the second sink cavity 21, the first water hole 23, and the first sink cavity 20 in sequence;

[0044] When the eardrum rod 13 is driven by the swing block 9 to be pushed toward the upper cover side (i.e., away from the motor side), the water filled in the concave cavity of the concave eardrum flows out through the concave cavity, the second water hole 27, the third trough cavity 26, the inner tube 32 and the upper inner tube 38, and the two concave eardrums alternately move to output pulse water.

[0045] The tympanic membrane support 2 is provided with an arc-shaped portion 39 for supporting the lower peripheral edge of the concave tympanic membrane. Through the arc-shaped portion 39, when the concave tympanic membrane is compressed (that is, the tympanic membrane rod 13 is driven by the swing block 9 to push toward the upper cover side), the lower peripheral edge of the concave tympanic membrane will not bulge downward (high water pressure will cause the lower peripheral edge of the concave tympanic membrane to bulge downward and deform), thereby ensuring the output water pressure.

[0046] The following is a detailed analysis of how the swing block swings:

[0047] like Fig.10 As shown, the axis of the swing shaft connecting block is A1-A1, and the axis of the swing block is A2-A2. When the motor rotates, it drives the swing shaft to rotate around the axis A1-A1. Obviously, the height position of any point on the axis A2-A2 always remains unchanged.

[0048] like Fig.10 As shown, a plane γ perpendicular to the swing axis A2-A2 is made through point A on the axis center of the limit hole on the swing block. The plane γ intersects the axis A2-A2 at point D. As mentioned above, during the movement, the height position of D remains unchanged.

[0049] The two intersecting straight lines A1-A1 and A2-A2 determine a plane. We assume that this plane is α, and the plane determined by A and axis A2-A2 is β.

[0050] ∵

[0051]

[0052] ∴α∩β=A2-A2

[0053] Let α∩γ=BD

[0054] ∵ γ⊥A2-A2∴BD⊥A2-A2, AD⊥A2-A2

[0055] ∵ ∴∠ADB is the angle between plane α and plane β, that is, the angle that plane α rotates from its original position β. Let ∠ADB = ωt;

[0056] On plane γ, we make AB⊥BD, and on plane α, we make DE⊥A1-A1

[0057] Assuming that the angle between A1-A1 and A2-A2 is θ, then ∠EDB=θ,

[0058] ∵γ⊥A2-A2 ∴γ⊥α

[0059] ∵γ⊥A2-A2 ∴AB⊥A2-A2∴AB⊥α

[0060] So B is the projection point of A on plane α, let EF∥AB, ∵AB⊥α,∴EF⊥α,∴EF⊥A1-A1, and DE⊥A1-A1, so A1-A1⊥plane EFD;

[0061] Therefore, BE is the distance from B to the horizontal plane EFD passing through point D, which is also the distance from A to the horizontal plane EFD passing through point D.

[0062] Assume AD=R, upward is positive, and the height position of the horizontal plane EDF is 0.

[0063] Then: y=BE=-BDsinθ=-ADcosωtsinθ=-Rcosωtsinθ

[0064] According to this formula, we can get that the height position of point A changes with the rotation of the swing shaft connecting block. One of the eardrum rods is fixed to the hole of the swing block through A, and the eardrum rod will cause the concave eardrum to deform up and down due to the up and down changes of point A.

[0065] Assuming that the diameter of the concave eardrum is D, and assuming that the distance of up and down movement is approximately regarded as the volume change of the concave eardrum is also a uniform change, then the flow rate can be approximately calculated as:

[0066]

[0067] Multiple holes can be made on the swing block on the plane γ, and multiple concave eardrums can be fixed on these holes. Similarly, these holes will move up and down with the rotation of the swing axis connecting block. Assuming that the angle between the positions of two adjacent concave eardrums and the swing axis A2-A2 is ψ, the formula for the water flow rate pumped out by the adjacent concave eardrums can be obtained as:

[0068]

[0069] If three concave tympanic membranes are evenly distributed on the swing block, the water flow rate pumped out by the three concave tympanic membranes is:

[0070] When the above flow rate is positive, it means that the concave tympanic membrane is pumping water out, and when the hole on the swing block moves downward, the concave tympanic membrane is absorbing water, so the above water flow rate is a positive value.

[0071] like Fig.11 It is a curve diagram of flow rate and angle, and the intersection position is the superposition of the water flow rates delivered by the two concave tympanic membrane pumps.

[0072]

[0073] When ψ=120°

[0074]

[0075] So we can easily draw the curve of the superimposed part, such as Fig.12 shown.

[0076] It can be seen from the curve above that if the three concave eardrums are evenly distributed in a circle, the water that pops out will be a stream with only tiny fluctuations, and the flushing effect will be extremely poor.

[0077] In addition, there are some attempts on the market to use electronic on and off to achieve the effect of pulsed water flow.

[0078] As we all know, due to the effect of inertia, even if the power is cut off, it will not stop immediately, and after the power is turned on, the motor will not reach the maximum speed immediately, so its flow curve is as follows Fig.13 As shown, this cleaning force is much smaller and the cleaning experience is very poor.

[0079] In order to avoid evenly distributed concave tympanic membranes, the pumped water has only slight fluctuations. The present application is designed to allow the motor to rotate continuously, and at the same time, within a certain angle, there is no concave tympanic membrane to pump water (that is, in the present embodiment, two concave tympanic membranes are provided within a 120-degree range of the circumferential direction of the drive shaft, and no concave tympanic membrane is provided within the remaining 210 degrees of the circumferential direction of the drive shaft). In this way, its curve is as follows Fig.14 , 15 shown.

[0080] from Fig.14 , 15 It can be seen that when ψ is 120°, the peak value of water pumped out by the first concave tympanic membrane, the superimposed peak value of water pumped out by the two concave tympanic membranes, and the peak value of water pumped out by the second tympanic membrane are equal. When ψ>120°, the superimposed peak value of water pumped out by the two concave tympanic membranes is smaller than the peak value of water pumped out by the concave tympanic membrane. When ψ<120°, the superimposed peak value of water pumped out by the two concave tympanic membranes is larger than the peak value of water pumped out by the concave tympanic membrane. Therefore, the position of the two tympanic membranes in this application with ψ≤120° is a preferred embodiment.

[0081] The multi-cylinder pulse water supply structure of the electric water flosser of the present invention drives the extension and retraction of two tympanic rods asymmetrically arranged on the circumference of the driving shaft through the swing of the swing block, thereby generating periodic pulsed water discharge, which is beneficial to realizing the function of the water flosser. In addition, there is no gear plate and crank-connecting rod mechanism in the mechanism, which is beneficial to simplify the mechanism and reduce the noise generated by the mechanism's operation.

[0082] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A multi-cylinder pulse water supply structure for an electric water flosser, characterized in that: The invention comprises a main body, a water inlet channel and a water outlet channel arranged on the main body, and a water pump with multiple suction and discharge mechanisms arranged on the main body for pumping water through the water inlet channel and providing pulsed water supply to the water outlet channel. The water pump with multiple suction and discharge mechanisms has at least two groups of suction and discharge components for pumping and draining water, and each suction and discharge component is asymmetrically arranged in the circumferential direction of the main body so that the water outlet channel provides pulsed water outlet.

2. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 1, characterized in that: The main body specifically includes a motor bracket, a tympanic membrane bracket, a valve body, an upper cover and an inlet and outlet water joint which are connected in sequence, a motor is fixedly installed on the rear end of the motor bracket, a driving shaft of the motor passes through the motor bracket and is fixedly connected to a rotating shaft connecting block, a swing block is installed in the tympanic membrane bracket body, a swing shaft is connected between the rotating shaft connecting block and the swing block, a tympanic membrane disk is installed on the tympanic membrane bracket, the tympanic membrane disk has at least two concave tympanic membranes asymmetrically arranged on the circumference of the driving shaft and a tympanic membrane rod fixedly connected to the outer bottom surface of the concave tympanic membrane, the swing block is provided with a limiting hole for limiting the telescopic movement of the guiding tympanic membrane rod, two one-way valves facing the concave tympanic membrane are installed on the valve body, the inlet and outlet water joints and the upper cover are provided with the water inlet channel and the water outlet channel isolated from each other, the valve body is provided with a water valve cavity connected with the water inlet channel and the water outlet channel, the two one-way valves intermittently connect or disconnect the water valve cavity, and the concave tympanic membrane and the tympanic membrane rod constitute the suction and discharge assembly.

3. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 2, characterized in that: The first end of the rotating shaft connecting block has a special-shaped hole that can be sleeved with the free end of the motor drive shaft to realize synchronous rotation of the rotating shaft connecting block. The second end of the rotating shaft connecting block has a first slot hole that is eccentric and inclined relative to the motor drive shaft. The first end of the swing shaft is inserted in the first slot hole with a clearance fit, and the second end of the swing shaft is inserted in the second slot hole of the swing block with an inclination and clearance fit, so that the swing block is driven to swing when the motor drive shaft rotates.

4. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 2, characterized in that: The concave eardrum on the eardrum disc is coaxial with the axis of the eardrum rod, and the axis of the concave eardrum and the eardrum rod is parallel to the axis of the motor drive shaft.

5. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 2, 3 or 4, characterized in that: The axial center lines of the concave eardrum and the eardrum rod on the eardrum disc are unevenly distributed in the circumferential direction.

6. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 5, characterized in that: The lower surface of the valve body is provided with a first sink groove cavity which is opposite to the two concave tympanic membranes and matched with each other, and the upper surface of the valve body is provided with a second sink groove cavity which is opposite to the first sink groove cavity, and the bottom of the first sink groove cavity is provided with a mounting hole of a one-way valve which passes through the second sink groove cavity and a first water passage hole which is located around the mounting hole of the one-way valve, and the one-way valve includes a valve membrane which is provided in the first sink groove cavity and can cover the first water passage hole, a valve stem which is fixedly connected to the valve membrane, and a convex portion which is provided on the valve stem and located in the second sink groove cavity, and the valve stem is installed in the mounting hole of the one-way valve and the axial movement of the valve stem is limited by the convex portion.

7. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 6, characterized in that: The upper surface of the valve body is provided with a third trough cavity, and second water holes penetrating to the lower surface of the valve body are respectively provided on both sides of the bottom of the third trough cavity, and the two second water holes are respectively connected to the two first trough cavities, and a water flow membrane capable of covering the two second water flow holes is installed in the third trough cavity.

8. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 7, characterized in that: A sealing plate is installed between the upper cover and the upper surface of the valve body, a sealing plate center through hole is provided in the center of the sealing plate, and a sealing plate side through hole is provided on the sealing plate beside the sealing plate center through hole, the end of the water outlet channel is connected to the third trough cavity, and the end of the water inlet channel is connected to the second trough cavity.

9. The multi-cylinder pulse water supply structure of the electric water flosser according to claim 8, characterized in that: The upper cover is coaxially sleeved with an inner tube and an outer tube spaced apart from each other, the inner tube at the center of the water inlet and outlet joint penetrates into the inner tube of the upper cover to form a water outlet channel, and the annular cavity formed between the inner tube and the outer tube is connected to the outlet end of the water inlet pipe on the water inlet and outlet joint to form a water inlet channel.

10. A working method of a multi-cylinder pulse water supply structure of an electric water flosser, characterized in that: The rotation of the motor drives the driving shaft of the motor to rotate, and then drives the rotating shaft connecting block to rotate. The rotation of the rotating shaft connecting block drives the swing shaft to drive the swing block to swing. The swinging of the swing block drives the extension and retraction of two tympanic membrane rods asymmetrically arranged on the circumference of the driving shaft, so that the concave tympanic membrane produces compression and extension movements, thereby realizing the intermittent connection or disconnection of the water valve cavity by the one-way valve, so that water enters from the water inlet channel and then enters the water valve cavity, and then the water is output from the water outlet channel by the extension movement of the concave tympanic membrane.

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