Electromagnetic integrated pump and oral irrigator

Abstract

The utility model relates to the technical field of novel water pumps, and discloses an electromagnetic integrated pump and a water pick, the electromagnetic integrated pump comprises a pump shell with a variable volume cavity, a water inlet and a water outlet which are communicated with the cavity are arranged on the pump shell, the water inlet and the water outlet need to be connected with one-way valves, and a piston assembly capable of moving linearly is arranged in the cavity. The volume of the cavity is changed through relative movement of the piston assembly, an electromagnetic coil assembly opposite to the piston assembly is installed in the cavity, and the electromagnetic coil assembly is used for providing driving power for the piston assembly to drive the piston assembly to do relative telescopic movement in the pump body, so that the volume of the cavity is changed. Due to the fact that the pump body is driven by electromagnetic force, mechanical structures such as a gear connecting rod do not need to be adopted for contact type driving, the instantaneous driving speed and driving force are not limited by mechanical transmission and are controlled by software and electronics, and compared with a traditional mechanical driving pump, the pump has the advantages of being low in noise, large in thrust and high in dynamic degree.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, and in particular to an electromagnetic integrated pump and a water flosser. Background Art

[0002] A water flosser is an electronic product used for oral care. It uses a high-pressure water jet to clean the oral cavity. Currently, water flossers are widely used in people's daily lives.

[0003] In the prior art, the water pump in the water flosser is powered by a motor, and the piston is driven to reciprocate and retract through the transmission of gears and connecting rods, thereby realizing high-frequency pulse water jets. However, the motor and gears will generate high-frequency noise during operation.

[0004] Therefore, how to achieve a pulse water pump solution with small size, low noise, high thrust and high dynamics has become a technical problem that needs to be urgently solved in the industry. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to provide an electromagnetic integrated pump and a water flosser to realize a non-contact pulse water pump solution and reduce operating noise.

[0006] To this end, according to the first aspect, the utility model discloses an electromagnetic integrated pump, comprising: a pump body having a variable volume cavity, the pump body being provided with a communicating water inlet and a water outlet, a retractable and movable piston assembly being installed in the variable volume cavity, an electromagnetic coil assembly being installed in the variable volume cavity and being arranged opposite to the piston assembly, the electromagnetic coil assembly being used to provide driving force to the piston assembly so as to drive the piston assembly to perform reciprocating telescopic motion in the pump body.

[0007] The utility model is further configured such that the pump body comprises a detachably connected pump casing and an end cover, the water inlet and the water outlet are both arranged on the pump casing, and the end cover is located at the end of the pump main casing.

[0008] The utility model is further configured that the number of the piston assembly, the electromagnetic coil assembly and the end cover are all set to two.

[0009] The utility model is further configured that the piston assembly comprises a piston which is telescopically mounted in the pump body, a permanent magnet is fixed in the piston, and the permanent magnet repels or attracts the electromagnetic coil assembly.

[0010] The utility model is further configured that a sealing ring is sleeved on the piston, and the sealing ring contacts the inner wall of the variable volume cavity to form a seal.

[0011] The utility model is further configured that a first buffer pad is sleeved on the piston, and the first buffer pad is used to buffer the telescopic movement of the piston when it reaches the end of the stroke, thereby reducing impact and noise.

[0012] The utility model is further configured that a mounting groove is provided in the piston, and the permanent magnet is bonded in the mounting groove through a glue layer.

[0013] The utility model is further configured that the electromagnetic coil assembly comprises an iron core, on which the electromagnetic coil is wound; a wire outlet slot is provided on the pump body, and the wire end of the electromagnetic coil passes through the wire outlet slot.

[0014] The utility model is further configured that a second buffer pad is installed between the iron core and the piston assembly, and the second buffer pad is used to buffer the piston assembly when it runs to the end of the stroke, thereby reducing impact and noise.

[0015] According to a second aspect, an embodiment of the utility model discloses a water flosser, comprising the electromagnetic integrated pump described in the first aspect.

[0016] The utility model has the following beneficial effects: the electromagnetic coil assembly provides driving force to the piston assembly, driving the piston assembly to perform reciprocating telescopic motion in the pump body, thereby generating a high-frequency pulse water jet; since the power is electromagnetic force, which is a non-contact driving force, there is no need to adopt contact mechanical transmission such as gear connecting rods, so the impact and noise can be effectively reduced, and the transient acceleration and force within a certain range can be adjusted and controlled by software. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of an electromagnetic integrated pump disclosed in this embodiment;

[0019] Figure 2 This is the second schematic diagram of the three-dimensional structure of an electromagnetic integrated pump disclosed in this embodiment;

[0020] Figure 3 is a schematic side view of the structure of an electromagnetic integrated pump disclosed in this embodiment;

[0021] Figure 4 yes Figure 3AA cross-sectional structural diagram;

[0022] Figure 5 It is a schematic diagram of the explosion structure of an electromagnetic integrated pump disclosed in this embodiment;

[0023] Figure 6 It is a schematic diagram of the exploded structure of a piston assembly in an electromagnetic integrated pump disclosed in this embodiment;

[0024] Figure 7 It is a schematic diagram of the exploded structure of an electromagnetic coil assembly in an electromagnetic integrated pump disclosed in this embodiment;

[0025] Figure 8 It is a schematic structural diagram of a pump main housing in an electromagnetic integrated pump disclosed in this embodiment.

[0026] Figure numerals: 10, pump body; 11, pump casing; 111, variable volume chamber; 112, water inlet; 113, water outlet; 114, wire outlet slot; 115, fixing claw; 12, end cover; 121, bump; 20, piston assembly; 21, piston; 211, first mounting groove; 22, permanent magnet; 23, first sealing ring; 24, first buffer pad; 25, rubber layer; 30, electromagnetic coil assembly; 31, iron core; 32, electromagnetic coil; 33, second buffer pad. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] According to a first aspect, the utility model discloses an electromagnetic integrated pump, such as Figure 1-8 As shown, it comprises: a pump body 10 with a variable volume cavity 111, a water inlet 112 and a water outlet 113 communicating with each other are arranged on the pump body 10, a piston assembly 20 capable of reciprocating telescopic movement is installed in the variable volume cavity 111, an electromagnetic coil assembly 30 arranged opposite to the piston assembly 20 is installed in the variable volume cavity 111, and the electromagnetic coil assembly 30 is used to provide driving force to the piston assembly 20 to drive the piston assembly 20 to reciprocate and telescopic movement in the pump body 10. In the specific implementation process, the water inlet 112 and the water outlet 113 are both connected to the variable volume cavity 111; the electromagnetic integrated pump is an integrated structure, which is convenient for installation and can pump water or other low-liquids, such as mouthwash, liquid medicine, etc.

[0032] It should be noted that the electromagnetic coil assembly 30 provides power to the piston assembly 20, driving the piston assembly 20) to perform reciprocating telescopic motion in the pump body 10, thereby providing an electromagnetic integrated pump that does not require gear transmission, realizes a magnetically driven water pump to generate a high-frequency pulse water jet, and reduces operating noise; by adjusting external control parameters, the flow rate of the water pump can be dynamically adjusted.

[0033] like Figure 4 and Figure 5 As shown, the pump body 10 includes a detachably connected pump housing 11 and an end cover 12, the water inlet 112 and the water outlet 113 are both arranged on the pump housing 11, and the end cover 12 is located at the end of the pump housing 11. The pump housing 11 and the end cover 12 are both made of magnetic isolation material to prevent the external circuit from being affected by magnetic field leakage. The end cover 12 is provided with a convex point 121, which is used to realize the welding and fixing of the end cover 12, thereby ensuring the firmness of the connection between the pump housing 11 and the end cover 12.

[0034] In the specific implementation process, one-way valves are installed at the water inlet 112 and the water outlet 113 to effectively prevent the liquid from flowing back. The pump housing 11 is provided with a fixed claw 115 of an integrally formed structure, which can be bent and used to limit the end cover 12. Four fixed claws 115 are distributed on both ends of the pump housing 11.

[0035] like Figure 1-5 As shown, the number of piston assemblies 20, electromagnetic coil assemblies 30 and end caps 12 are all set to two. In the specific implementation process, the two piston assemblies 20 are symmetrically distributed in the pump body 10, and the two electromagnetic coil assemblies 30 are symmetrically distributed in the pump body 10. By setting two piston assemblies 20 and two electromagnetic coil assemblies 30, the pumping capacity of the electromagnetic integrated pump can be improved and its adaptability can be enhanced.

[0036] like Figure 4-6 As shown, the piston assembly 20 includes a piston 21 movably connected to the pump body 10, and the piston 21 is sleeved with a permanent magnet 22, and the permanent magnet 22 repels or attracts the electromagnetic coil assembly 30. It should be noted that the electromagnetic coil assembly 30 provides a driving magnetic force, and when the magnetic force between the permanent magnet 22 and the electromagnetic coil assembly 30 repels, the piston 21 is driven to extend; and when the magnetic force between the permanent magnet 22 and the electromagnetic coil assembly 30 attracts, the piston 21 is driven to retract, and so on, so that the piston 21 performs telescopic movement, thereby realizing the pumping and delivery functions of the electromagnetic integrated pump.

[0037] like Figure 4-6 As shown, a first sealing ring 23 is sleeved on the piston 21, and the first sealing ring 23 contacts the inner wall of the variable volume chamber 111 to form a seal. In this embodiment, the first sealing ring 23 is installed at one end of the piston 21 relative to the iron core 31, and the number of the first sealing rings 23 is set to two; dynamic sealing is performed between the first sealing ring 23 and the pump housing 11 to prevent water leakage.

[0038] like Figure 4-6 As shown, a first buffer pad 24 is sleeved on the piston 21, and the first buffer pad 24 is used to buffer the telescopic movement of the piston 21. In the specific implementation process, the first buffer pad 24 is made of foamed EPDM or silicone; the first buffer pad 24 is installed at one end of the piston 21 relative to the iron core 31. The first buffer pad 24 is arranged to prevent the piston 21 from directly colliding with the end surface of the variable volume cavity 111 during the telescopic movement, which can effectively reduce its operating noise.

[0039] like Figure 4-6As shown, a mounting groove 211 is provided in the piston 21, and the permanent magnet 22 is bonded in the mounting groove 211 through a glue layer 25. It should be noted that the permanent magnet 22 is bonded in the mounting groove 211 through the glue layer 25, and the permanent magnet 22 can be fixedly installed. When the electromagnetic coil assembly 30 provides a driving magnetic force, the permanent magnet 22 is convenient for driving the piston 21 to perform telescopic movement.

[0040] like Figure 4 , Figure 5 and Figure 7 As shown, the electromagnetic coil assembly 30 includes an iron core 31, on which an electromagnetic coil 32 is wound; a wire outlet slot 114 is provided on the pump body 10, and the wire end of the electromagnetic coil 32 passes through the wire outlet slot 114. In this embodiment, the wire outlet slot 114 is provided on the pump housing, and one end of the piston 21 is inserted into the iron core 31.

[0041] It should be noted that the electromagnetic coil 32 is connected to the external power supply and the control board. After the electromagnetic coil 32 is conductive, the iron core 31 is magnetized, thereby providing driving force to the permanent magnet 22. By changing the power supply direction of the electromagnetic coil 32, the iron core 31 is magnetically attracted or repelled by the permanent magnet 22, thereby realizing the telescopic movement of the piston 21. In addition, the electromagnetic integrated pump is less restricted by the structure, and by changing the electrical parameters, the transient motion parameters of the piston 21 can be adjusted, thereby realizing the transient flow dynamic adjustment of the electromagnetic integrated pump.

[0042] like Figure 4 , Figure 5 and Figure 7 As shown, a second buffer pad 33 is installed between the iron core 31 and the piston assembly 20, and the second buffer pad 33 is used to buffer the movement of the piston assembly 20. In this embodiment, the second buffer pad 33 is made of foamed EPDM or silicone material; the second buffer pad 33 can be bonded to the end of the iron core 31 close to the permanent magnet 22, and the second buffer pad 33 can also be bonded to the permanent magnet 22 or the piston 21; through the provision of the second buffer pad 33, the piston assembly 20 is prevented from directly colliding with the end face of the iron core 31 during the telescopic movement, which can effectively reduce its operating noise.

[0043] According to the second aspect, the embodiment of the utility model discloses a water flosser, including the electromagnetic integrated pump of the first aspect. It should be noted that the electromagnetic integrated pump of the present application has a more reasonable structure and layout, and is convenient to be installed in the water flosser. The operating state of the electromagnetic integrated pump can be dynamically adjusted, thereby realizing the dynamic adjustment of the water output of the water flosser.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An electromagnetic integrated pump, characterized in that: include: A pump body (10) having a variable volume cavity (111), wherein the pump body (10) is provided with a water inlet (112) and a water outlet (113) which are in communication with each other; A retractable piston assembly (20) is installed in the pump body (10), and an electromagnetic coil assembly (30) is installed in the pump body (10) and is installed opposite to the piston assembly (20). The electromagnetic coil assembly (30) is used to provide a driving force to the piston assembly (20) so as to drive the piston assembly (20) to perform reciprocating telescopic motion in the pump body (10).

2. The electromagnetic integrated pump according to claim 1, characterized in that: The pump body (10) comprises a detachably connected pump casing (11) and an end cover (12); the water inlet (112) and the water outlet (113) are both arranged on the pump casing (11); and the end cover (12) is located at the end of the pump casing (11).

3. The electromagnetic integrated pump according to claim 2, characterized in that: The number of the piston assembly (20), the electromagnetic coil assembly (30) and the end cover (12) are all two.

4. The electromagnetic integrated pump according to any one of claims 1 to 3, characterized in that: The piston assembly (20) comprises a piston (21) which is telescopically mounted in the pump body (10), a permanent magnet (22) being fixed in the piston (21), and the permanent magnet (22) and the electromagnetic coil assembly (30) repel or attract each other.

5. The electromagnetic integrated pump according to claim 4, characterized in that: A sealing ring (23) is sleeved on the piston (21), and the sealing ring (23) contacts the inner wall of the variable volume chamber (111) to form a seal.

6. The electromagnetic integrated pump according to claim 4, characterized in that: A first buffer pad (24) is sleeved on the piston (21), and the first buffer pad (24) is used to provide buffering when the piston (21) performs telescopic movement to the end of the stroke.

7. The electromagnetic integrated pump according to claim 4, characterized in that: The piston (21) is provided with a mounting groove (211), and the permanent magnet (22) is bonded to the mounting groove (211) via a glue layer (25).

8. The electromagnetic integrated pump according to any one of claims 1 to 3, characterized in that: The electromagnetic coil assembly (30) comprises an iron core (31) on which an electromagnetic coil (32) is wound; the pump body (10) is provided with a wire outlet slot (114), through which a wire end of the electromagnetic coil (32) passes.

9. The electromagnetic integrated pump according to claim 8, characterized in that: A second buffer pad (33) is installed between the iron core (31) and the piston assembly (20), and the second buffer pad (33) is used to provide buffering when the piston assembly (20) moves to the end of its stroke.

10. A water flosser, characterized in that: It comprises an electromagnetic integrated pump as described in any one of claims 1 to 9.

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