Piston, pump mechanism, fixing tool and oral cavity cleaner

Abstract

The utility model discloses a piston, a pump mechanism, a fixing tool and an oral cavity cleaner, and the piston is configured to be assembled to a driving assembly of the pump mechanism through the fixing tool; the piston comprises a flexible part, a fixed part and a connecting part which are sequentially connected in the preset direction. The fixing part is configured to be fixedly matched with the fixing tool; the connecting part is configured to be connected with a driving assembly of the pump mechanism and driven by the driving assembly. The piston, the pump mechanism, the fixing tool and the oral cavity cleaner have the advantage that the assembly efficiency of the piston is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of water pumps, and particularly to a piston, a pump mechanism, a fixing tool, and an oral cleaner. Background Art

[0002] With the increasing emphasis on oral care by people, electric toothbrushes and oral irrigators have gradually become common oral care tools in families. Among them, an electric toothbrush uses a motor to make the toothbrush head vibrate at a high frequency, so as to instantly decompose toothpaste into fine foam and deeply clean the tooth gaps. An oral irrigator uses a water pump to pump out a high-speed water column with a certain pressure, so as to use the impact force of the high-speed water column to clean teeth and tooth gaps. Of course, there are also some integrated oral cleaners that can combine the functions of a toothbrush and an oral irrigator.

[0003] Related oral cleaners with the function of an oral irrigator include a water pump capable of pumping out the liquid in a water tank. The water pump may include a pump housing, a piston, and a driving member. The pump housing has a pump chamber, a liquid inlet hole, and a liquid outlet hole, and both the liquid inlet hole and the liquid outlet hole communicate with the inner cavity. The driving member is connected to the piston and can drive the piston to reciprocate in the pump chamber along a preset direction, so that the liquid can be pumped into the pump chamber from the liquid inlet hole and pumped out of the pump chamber from the liquid outlet hole.

[0004] However, the above-mentioned oral cleaner has the disadvantage of low assembly efficiency of the piston of the water pump. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a piston, a pump mechanism, a fixing tool, and an oral cleaner, which can solve the problem of low assembly efficiency of the piston.

[0006] To achieve the above purpose, on the one hand, an embodiment of the present application provides a piston for a pump mechanism. The piston is configured to be assembled to a driving component of the pump mechanism through a fixing tool. The piston includes a flexible part, a fixing part, and a connecting part that are sequentially connected along a preset direction. The fixing part is configured to be fixedly matched with the fixing tool. The connecting part is configured to be connected to the driving component of the pump mechanism and be driven by the driving component.

[0007] The piston provided by the embodiment of the present application includes a flexible part, a fixing part, and a connecting part that are sequentially connected. Among them, the connecting part is connected to the driving component of the pump mechanism and moves with the movement of the driving shaft, so that the flexible part is driven by the driving component to move. The fixing part is fixedly matched with the fixing tool to provide a fixing position for clamping or adsorbing by the fixing tool, thereby facilitating the fixing tool to drive the piston to move, so as to assemble the piston to the driving component, and further improving the assembly efficiency of the piston.

[0008] Optionally, the orthographic projections of the fixing part and the connecting part along the preset direction on the end face of the flexible part are both located inside the flexible part.

[0009] Through the above scheme, the outer edge of the end surface of the flexible part is located outside the outer edge of the end surface of the fixed part (and the connecting part), so that the end of the piston facing the liquid inlet end and the liquid storage end of the pump mechanism is flexible as a whole, so that the liquid in the pump chamber can be pumped into and out of the pump chamber as the flexible part is deformed, so as to further improve the pumping effect of the pump mechanism.

[0010] Optionally, an orthographic projection of the connecting portion on the end surface of the fixing portion along the preset direction is located on the inner side of the end surface of the fixing portion.

[0011] Through the above solution, the outer edge of the end face of the fixing part is located outside the outer edge of the end face of the connecting part, so that the fixing part provides a larger fixing position (contact surface) for the fixing tool, thereby making the connection strength between the fixing tool and the fixing part larger, so that the fixing tool can fix the fixing part. In addition, in the preset direction, the cross section of the piston gradually decreases, so that the cross section of the pump chamber matched therewith gradually decreases, thereby facilitating the processing of the shape of the pump chamber.

[0012] Optionally, the fixing portion has a side wall for being clamped by the fixing tool; and the flexible portion is configured to be deformed when the fixing tool clamps the piston.

[0013] Through the above solution, the fixing tool adopts the method of clamping the piston to drive the piston to move.

[0014] Optionally, the side wall of the fixing portion has an anti-slip groove or an anti-slip protrusion.

[0015] Through the above solution, the provision of the anti-slip groove and the anti-slip protrusion can increase the surface roughness of the fixing part, thereby increasing the friction between the fixing part and the fixing tool, so as to improve the clamping stability of the fixing tool clamping the fixing part.

[0016] Optionally, the side wall of the fixing part defines a accommodating cavity for accommodating the clamping jaws of the fixing tool, the accommodating cavity has a first opening for the clamping jaws of the fixing tool to pass through on the side facing the flexible part, and the accommodating cavity has an inner cavity wall for limiting the rotation of the clamping jaws of the fixing tool relative to the fixing part.

[0017] Through the above solution, after the clamping jaws of the fixing tool extend into the accommodating cavity from the first opening, the clamping jaws can drive the inner cavity wall of the accommodating cavity to rotate and drive the fixing part to rotate, and then drive the piston to rotate, so as to facilitate the assembly of the piston.

[0018] Optionally, the accommodating cavity has a second opening which is away from the center line of the fixing portion.

[0019] Through the above solution, the accommodating cavity has an open end at one end away from the center line of the fixing portion, and this end will not restrict the clamping claw, so that the clamping claw can be easily extended into the accommodating cavity.

[0020] Optionally, the side wall of the fixing portion is provided with a plurality of limiting protrusions, the plurality of limiting protrusions are arranged at intervals along the circumference of the fixing portion, and two adjacent limiting protrusions and the side wall of the fixing portion located between the two adjacent limiting protrusions define the accommodating cavity.

[0021] Through the above solution, the accommodating cavity is formed by utilizing the limiting protrusion.

[0022] Optionally, the fixing portion is a first magnet that is magnetically coupled to the fixing tool.

[0023] Through the above solution, the fixing tool utilizes magnetic attraction to fix the piston, which has the advantage of being easy to connect and separate the fixing tool and the piston.

[0024] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application further provides a fixing tool, which is configured to be fixedly matched with the fixing portion of the piston as described above, so as to assemble the piston to the pump mechanism.

[0025] The fixing tool provided in the embodiment of the present application can assist in the assembly and disassembly of the piston so as to improve the efficiency of piston assembly.

[0026] Optionally, when the fixing portion has a side wall for clamping by the fixing tool, the fixing tool includes a clamping claw configured to clamp the fixing portion.

[0027] Through the above solution, the fixing part is clamped by the clamping claws of the fixing tool, so that the fixing tool can drive the fixing part to move.

[0028] Optionally, the fixing tool further comprises a platform for the user to apply force, and one side of the platform is connected to the clamping claw.

[0029] Through the above solution, the user can apply force through the platform so that the fixing tool drives the piston to make corresponding movements.

[0030] Optionally, when the fixing portion is a first magnet that is magnetically matched with the fixing tool, the fixing tool includes a second magnet that is magnetically matched with the fixing portion.

[0031] Through the above solution, the fixing tool and the fixing part are fixed by magnetic attraction.

[0032] To achieve the above object, on the other hand, an embodiment of the present application further provides a pump mechanism, including a pump housing, a driving assembly, and the piston as described above. The pump housing has a pump chamber for accommodating the piston, and the driving assembly is connected to the piston and drives the piston to reciprocate in the pump chamber.

[0033] To achieve the above object, on yet another aspect, an embodiment of the present application further provides an oral cleaner, including a housing and the pump mechanism as described above. The pump mechanism is disposed in the inner cavity of the housing. Description of the Drawings

[0034] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 A schematic diagram of an oral cleaner provided by an embodiment of the present application;

[0036] Figure 2 A longitudinal sectional view of a pump mechanism provided by an embodiment of the present application;

[0037] Figure 3 An exploded view of a pump mechanism provided by an embodiment of the present application;

[0038] Figure 4 A schematic diagram of a fixing tool and a pump mechanism provided by an embodiment of the present application;

[0039] Figure 5 For Figure 4 A perspective view of the piston of the pump mechanism shown from another angle;

[0040] Figure 6 For Figure 4 A top view of the piston shown.

[0041] Description of the Reference Numerals:

[0042] 1000, pump mechanism;

[0043] 100, piston; 110, flexible part; 120, fixing part; 121, accommodating cavity; 122, first opening; 123, second opening; 124, limiting protrusion; 130, connecting part;

[0044] 200, driving assembly; 210, eccentric wheel; 220, motor; 221, motor shaft; 230, abutting member;

[0045] 300, pump housing; 310, pump chamber;

[0046] 2000, Fixing tool; 2100, Jaw; 2200, Platform;

[0047] 3000, Water tank;

[0048] 4000, Liquid inlet pipe;

[0049] 5000, Liquid outlet pipe;

[0050] 6000, Housing;

[0051] 7000, Liquid spraying head. Specific embodiments

[0052] An oral cleaner is a cleaner that can effectively remove bacteria and food residues on the tooth surface and between tooth gaps. Figure 1 It is a schematic diagram of an oral cleaner provided by an embodiment of the present application. Refer to Figure 1 , the oral cleaning device provided by the embodiment of the present application includes a housing 6000, a liquid spraying head 7000 and a pump mechanism 1000. Among them, the liquid spraying head 7000 is arranged at one end of the housing 6000, and the liquid spraying head 7000 has a cavity, a liquid inlet and a liquid outlet, wherein the cavity communicates with the liquid inlet and the liquid outlet. The pump mechanism 1000 is arranged in the inner cavity of the housing 6000 and has a liquid inlet end and a liquid outlet end. The oral cleaner may further include a water tank 3000, and the water tank 3000 may be arranged in the inner cavity of the housing 6000 as shown in Figure 1 , or the water tank 3000 may be arranged outside the housing 6000. The water tank 3000 is communicated with the liquid inlet end of the pump mechanism 1000 through a liquid inlet pipe 4000, and the liquid outlet end of the pump mechanism 1000 is communicated with the cavity of the liquid spraying head 7000 through a liquid outlet pipe 5000.

[0053] Figure 2 It is a longitudinal sectional view of a pump mechanism provided by an embodiment of the present application, Figure 3 It is an exploded view of a pump mechanism provided by an embodiment of the present application. Refer to Figure 2 With Figure 3 , the pump mechanism 1000 may include a pump housing 300, an upper cover (not shown in the figure), a driving assembly 200 and a piston 100. The pump housing 300 may have an open end, and the upper cover may cover the open end of the pump housing 300 and form a pump chamber 310 with the pump housing 300. The liquid inlet end of the pump chamber 310 is the liquid inlet end of the pump mechanism 1000, and the liquid outlet end of the pump chamber 310 is the liquid outlet end of the pump mechanism 1000.

[0054] The driving assembly 200 is connected to the piston 100 and drives the piston 100 to reciprocate in the pump chamber 310. Exemplarily, the driving assembly 200 may include a motor 220, an eccentric wheel 210, and a pressing member 230. The motor shaft of the motor 220 may pass through the eccentric wheel 210 and drive the eccentric wheel 210 to rotate relative to the pump housing 300. The rotation axis of the eccentric wheel 210 is parallel to and spaced from the center line of the eccentric wheel 210. The pressing member 230 may be in contact with the eccentric wheel 210 and reciprocate relative to the pump housing 300 in a preset direction during the rotation of the eccentric wheel 210.

[0055] Reference Figure 2 , the piston 100 may include a connecting portion 130, and the connecting portion 130 may be detachably connected to the driving assembly 200 by means such as threaded connection and snap connection. Figure 2 Taking the threaded connection between the connecting portion 130 and the pressing member 230 of the driving assembly 200 as an example for illustration.

[0056] It should be noted that, in order to facilitate the piston 100 to pump liquid, the side of the piston 100 in contact with the liquid in the pump chamber 310 is flexible. Since the volume of the piston 100 is small and one end thereof is flexible, it is inconvenient for the user to directly assemble by hand. In view of this, the embodiment of the present application provides a fixing tool 2000 that can assist in the assembly of the piston 100.

[0057] Figure 4 Schematic diagram of the fixing tool provided by the embodiment of the present application and the pump mechanism, Figure 5 For Figure 4 A perspective view of another angle of the piston of the pump mechanism shown. Figure 6 For Figure 4 The top view of the piston shown. Reference Figure 2 , Figures 4 - 6 , the piston 100 can be assembled to the driving assembly 200 of the pump mechanism 1000 through the fixing tool 2000. Specifically, the piston 100 may include a flexible portion 110, a fixing portion 120, and a connecting portion 130 that are sequentially connected in a preset direction. The fixing portion 120 may be fixedly matched with the fixing tool 2000, and the connecting portion 130 may be connected to the driving assembly 200 of the pump mechanism 1000 and be driven by the driving assembly 200.

[0058] The piston 100 provided by the embodiment of the present application includes a flexible part 110, a fixing part 120, and a connecting part 130 that are connected in sequence. Among them, the connecting part 130 is connected to the driving component 200 of the pump mechanism 1000 and moves with the movement of the driving shaft, so that the flexible part 110 is driven by the driving component 200 to move. The fixing part 120 is fixedly matched with the fixing tool 2000 to provide a fixing position for clamping or adsorbing the fixing tool 2000, thereby facilitating the fixing tool 2000 to drive the piston 100 to move, so as to assemble the piston 100 to the driving component 200, and further improve the assembly efficiency of the piston 100.

[0059] Optionally, the orthographic projections of the fixing part 120 and the connecting part 130 on the end face of the flexible part 110 along the preset direction are both located inside the flexible part 110. In this way, the outer edge of the end face of the flexible part 110 is located outside the outer edge of the end face of the fixing part 120 (and the connecting part 130), so that one end of the piston 100 facing the liquid inlet end and the liquid storage end of the pump mechanism 1000 is integrally flexible, facilitating the liquid in the pump chamber 310 to be pumped into and out of the pump chamber 310 with the deformation of the flexible part 110, so as to further improve the liquid pumping effect of the pump mechanism 1000.

[0060] Optionally, the orthographic projection of the connecting part 130 on the end face of the fixing part 120 along the preset direction is located inside the end face of the fixing part 120. In this way, the outer edge of the end face of the fixing part 120 is located outside the outer edge of the end face of the connecting part 130, so that the fixing position (contact surface) provided by the fixing part 120 for the fixing tool 2000 is larger, and the connection strength between the fixing tool 2000 and the fixing part 120 is larger, facilitating the fixing tool 2000 to fix the fixing part 120. In addition, in the preset direction, the cross-section of the piston 100 gradually decreases, so that the cross-section of the pump chamber 310 that cooperates with it gradually decreases, facilitating the processing of the shape of the pump chamber 310.

[0061] Optionally, the fixing part 120 has a side wall for the fixing tool 2000 to clamp. The flexible part 110 can be deformed when the fixing tool 2000 clamps the piston 100. In this way, the fixing tool 2000 drives the piston 100 to move by clamping the piston 100.

[0062] Optionally, the side wall of the fixing part 120 has anti-slip grooves or anti-slip protrusions. In this way, the anti-slip grooves and anti-slip protrusions can increase the surface roughness of the fixing part 120, and further increase the friction between the fixing part 120 and the fixing tool 2000, so as to improve the clamping stability of the fixing tool 2000 clamping the fixing part 120.

[0063] Optionally, the fixing tool 2000 may include jaws 2100 that can grip the fixing portion 120 to drive the fixing portion 120 to move. Further, the fixing tool 2000 may further include a platform 2200 for the user to apply force, and one side of the platform 2200 is connected to the jaws 2100. In this way, the user can apply force through the platform 2200 so that the fixing tool 2000 drives the piston 100 to perform corresponding movements.

[0064] Optionally, a receiving cavity 121 for receiving the jaws 2100 of the fixing tool 2000 is defined in the side wall of the fixing portion 120. The receiving cavity 121 has a first opening 122 on the side facing the flexible portion 110 for the jaws 2100 of the fixing tool 2000 to penetrate. The receiving cavity 121 has an inner cavity wall that restricts the rotation of the jaws 2100 of the fixing tool 2000 relative to the fixing portion 120. In this way, after the jaws 2100 of the fixing tool 2000 extend into the receiving cavity 121 from the first opening 122, the jaws 2100 can drive the rotation of the inner cavity wall of the receiving cavity 121 to drive the fixing portion 120 to rotate, and then drive the piston 100 to rotate. In this way, the user does not need to apply a large clamping force to the jaws 2100 to rotate the piston 100, which has the advantages of being convenient for assembly and improving assembly stability.

[0065] Optionally, the receiving cavity 121 has a second opening 123 facing away from the center line of the fixing portion 120. In this way, one end of the receiving cavity 121 facing away from the center line of the fixing portion 120 is an open end, and this end does not restrict the jaws 2100, so that the jaws 2100 can more easily extend into the receiving cavity 121.

[0066] Optionally, a plurality of limiting protrusions 124 are provided on the side wall of the fixing portion 120. The plurality of limiting protrusions 124 are arranged at intervals along the circumferential direction of the fixing portion 120, and the side wall of the fixing portion 120 between two adjacent limiting protrusions 124 and the two adjacent limiting protrusions 124 define the receiving cavity 121. In this way, the receiving cavity 121 is formed by using the limiting protrusions 124.

[0067] Optionally, the fixing tool 2000 may include a second magnet, and the fixing portion 120 may be a first magnet magnetically coupled with the second magnet. In this way, the fixing tool 2000 fixes the piston 100 by magnetic coupling, which has the advantage of facilitating the connection and separation between the fixing tool 2000 and the piston 100.

[0068] Among them, terms such as "upper" and "lower" are used to describe the relative positional relationship of each structure in the drawings. It is only for the sake of clarity in narration and does not limit the scope of implementation of the present application. The change or adjustment of its relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present application.

[0069] It should be noted that in this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0070] In addition, in this application, unless otherwise clearly specified or limited, the terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A piston for a pump mechanism (1000), characterized in that, The piston (100) is configured to be assembled to the drive assembly (200) of the pump mechanism (1000) through a fixing tool (2000); The piston (100) comprises a flexible portion (110), a fixing portion (120) and a connecting portion (130) which are sequentially connected along a preset direction; The fixing portion (120) is configured to be fixedly matched with the fixing tool (2000); The connecting portion (130) is configured to be connected to the driving component (200) and driven by the driving component (200).

2. The piston according to claim 1, characterized in that, Orthographic projections of the fixing portion (120) and the connecting portion (130) on the end surface of the flexible portion (110) along the preset direction are both located on the inner side of the flexible portion (110).

3. The piston according to claim 2, characterized in that, The orthographic projection of the connecting portion (130) on the end surface of the fixing portion (120) along the preset direction is located on the inner side of the end surface of the fixing portion (120).

4. The piston according to claim 2, characterized in that, The fixing portion (120) has a side wall for clamping by the fixing tool (2000); The flexible portion (110) is configured to deform when the fixing tool (2000) clamps the piston (100).

5. The piston according to claim 4, characterized in that, The side wall of the fixing portion (120) has an anti-slip groove or an anti-slip protrusion.

6. The piston according to claim 4, wherein The side wall of the fixing portion (120) defines an accommodating cavity (121) for accommodating the clamping jaw (2100) of the fixing tool (2000); the accommodating cavity (121) has a first opening (122) on the side facing the flexible portion (110) for the clamping jaw (2100) of the fixing tool (2000) to penetrate; and the accommodating cavity (121) has an inner cavity wall for limiting the rotation of the clamping jaw (2100) of the fixing tool (2000) relative to the fixing portion (120).

7. The piston according to claim 6, characterized in that, The accommodating cavity (121) has a second opening (123) which is away from the center line of the fixing portion (120).

8. The piston according to claim 7, characterized in that, The side wall of the fixing portion (120) is provided with a plurality of limiting protrusions (124), the plurality of limiting protrusions (124) are arranged at intervals along the circumference of the fixing portion (120), and two adjacent limiting protrusions (124) and the side wall of the fixing portion (120) located between the two adjacent limiting protrusions (124) define the accommodating cavity (121).

9. The piston according to claim 1, wherein The fixing portion (120) is a first magnet that is magnetically matched with the fixing tool (2000).

10. A fixing tool, characterized in that, The fixing portion (120) is configured to be fixedly matched with the fixing portion (120) of the piston (100) according to any one of claims 1 to 9, so as to assemble the piston (100) in the pump mechanism (1000).

11. The fixing tool according to claim 10, characterized in that, When the fixing portion (120) has a side wall for clamping by the fixing tool (2000), the fixing tool (2000) includes a clamping claw (2100), and the clamping claw (2100) is configured to clamp the fixing portion (120).

12. The fixing tool according to claim 11, characterized in that, It also includes a platform (2200) for the user to apply force, and one side of the platform (2200) is connected to the clamp (2100).

13. The fixing tool according to claim 10, characterized in that, When the fixing part (120) is a first magnet magnetically coupled with the fixing tool (2000), the fixing tool (2000) includes a second magnet magnetically coupled with the fixing part (120).

14. A pump mechanism, characterized in that, It includes a pump housing (300), a driving assembly (200), and a piston (100) according to any one of claims 1-9. The pump housing (300) has a pump chamber (310) for accommodating the piston (100), and the driving assembly (200) is connected to the piston (100) and drives the piston (100) to reciprocate in the pump chamber (310).

15. An oral cleaner, characterized in that, It includes a housing (6000) and a pump mechanism (1000) according to claim 14. The pump mechanism (1000) is disposed in the inner cavity of the housing (6000).

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