Vibration isolator for oral irrigators

Abstract

The oral irrigator may include a housing, a drive assembly positioned within the housing, a pump assembly coupled to the drive assembly, and an isolator assembly coupled to at least one of the drive assembly or the pump assembly and configured to dampen vibrations generated by either or both of the drive assembly or the pump assembly. The isolator assembly may include a chassis coupled to a portion of at least one of the drive assembly or the pump assembly, an engagement arm coupled to and extending outward from the chassis, and a bumper positioned between the chassis and a portion of the housing, the bumper including a pocket defined therein and configured to support the isolator assembly within the housing, where the engagement arm engages an engagement surface of the bumper that is separate from a pocket surface that defines the pocket.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to U.S. Provisional Patent Application No. 63 / 441,628, filed January 27, 2023, entitled "Vibration Isolator for Oral Irrigators," and U.S. Provisional Patent Application No. 63 / 538,261, filed September 13, 2023, entitled "Oral Irrigators," both of which are hereby incorporated by reference in their entireties for all purposes.

[0002] FIELD OF THE DISCLOSURE The present disclosure relates generally to oral hygiene devices, such as oral irrigators. [Background technology]

[0003] Many people use oral irrigators and other electronic oral hygiene devices, such as toothbrushes, to maintain and improve oral hygiene. Many oral irrigators include an electric pump that pumps fluid from a reservoir or other fluid supply to a handle. The pump assembly and drive assembly for operating the pump typically include a motor, a pump and / or gear housing, and various linkages. During operation, pump assembly components can generate vibrations and noise due to moving parts; for example, a motor can generate vibrations as the drive shaft rotates. The vibrations can often pass through to the oral irrigator housing and other external components, generating noise (e.g., parts rattle), creating an unpleasant user experience, and causing wear due to movement on moving parts. Therefore, a need exists for improved vibration isolators for pump assemblies and / or drive assemblies for oral irrigators and other oral hygiene devices. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 8,888,727 Summary of the Invention [Means for solving the problem]

[0005] In one embodiment, an oral irrigator is disclosed. The oral irrigator may include a housing, a drive assembly positioned within the housing, a pump assembly coupled to the drive assembly, and an isolator assembly coupled to at least one of the drive assembly or the pump assembly and configured to dampen vibrations generated by either or both of the drive assembly or the pump assembly. The isolator assembly includes a chassis operably coupled to a portion of at least one of the drive assembly or the pump assembly, an engagement arm coupled to and extending outward from the chassis, and a damper positioned between the chassis and a portion of the housing, the damper including a pocket defined therein and configured to support the isolator assembly within the housing, where the engagement arm engages an engagement surface of the damper that is separate from a pocket surface defining the pocket.

[0006] Optionally, in some embodiments, the engagement surface forms an outer surface of the bumper.

[0007] Optionally, in some embodiments, the outer surface is the top surface of the bumper and is positioned above the pocket surface.

[0008] Optionally, in some embodiments, the engagement arm is coupled to the bumper at a location other than the pocket.

[0009] Optionally, in some embodiments, the engagement arm includes a first engagement arm and a second engagement arm, the first engagement arm contacting the engagement surface of the shock absorber and the second engagement arm positioned adjacent to the pocket surface of the shock absorber.

[0010] Optionally, in some embodiments, the second engagement arm is positioned within the pocket and the engagement surface is positioned above the pocket such that the first engagement arm is positioned above the pocket.

[0011] Optionally, in some embodiments, the pocket surface includes a first pocket surface, a second pocket surface, and a third pocket surface, and the second engagement arm contacts the first pocket surface and the third pocket surface but does not contact the second pocket surface.

[0012] Optionally, in some embodiments, the engagement surface is positioned above the pocket, the first pocket surface forms an inner surface of the pocket, the third pocket surface forms a bottom inner surface of the pocket, and the second engagement arm is at least partially received within the pocket.

[0013] Optionally, in some embodiments, the housing includes a mounting surface, the bumper includes a mounting head received through an opening in the mounting surface, and the bumper supports the chassis above the mounting surface.

[0014] Optionally, in some embodiments, the chassis does not contact the mounting surface.

[0015] Optionally, in some embodiments, the mounting surface defines a bottom surface of the housing.

[0016] Optionally, in some embodiments, the chassis is operably coupled to at least one of a drive shaft of the drive assembly, one or more gears of the drive assembly, a connecting arm of the pump assembly, or a piston of the pump assembly.

[0017] Optionally, in some embodiments, the chassis further defines a gearbox for receiving gearing for the drive assembly.

[0018] Optionally, in some embodiments, the oral irrigator includes a stop coupled to at least one of the buffer or the engagement arm and configured to limit movement of the engagement arm relative to the buffer in at least one direction.

[0019] Optionally, in some embodiments, the pocket is a first pocket, the buffer includes a second pocket, the engagement surface is formed on the second pocket, and the engagement arm is at least partially received within the second pocket.

[0020] In one example, an oral irrigator is disclosed. The oral irrigator includes a housing, a vibration-generating component positioned within the housing, and an isolator assembly coupled to the vibration-generating component. The isolator assembly includes a chassis coupled to the vibration-generating component, an engagement arm coupled to the chassis, and a bumper positioned between the chassis and the housing, where the engagement arm engages a top surface of the bumper and a bottom surface of the bumper engages the housing.

[0021] Optionally, in some embodiments, the vibration generating component comprises a portion of a drive assembly or pump assembly for the oral irrigator.

[0022] Optionally, in some embodiments, the engagement arm includes a first engagement arm and a second engagement arm, wherein the first engagement arm engages with a top surface of the buffer and the second engagement arm engages with another surface of the buffer other than the top surface.

[0023] Optionally, in some embodiments, the bumper further includes a pocket defined through its sidewall.

[0024] Optionally, in some embodiments, the engagement arm includes a first engagement arm and the isolator assembly includes a second engagement arm, the second engagement arm being at least partially received within the pocket.

[0025] Optionally, in some embodiments, the thickness of the second engagement arm is less than the height of the pocket.

[0026] Optionally, in some embodiments, at least one of the bumper or the engagement arm includes a stop that limits movement of the engagement arm relative to the bumper in at least one direction.

[0027] In one example, an oral irrigator is disclosed. The oral irrigator includes a base, a chassis, a vibration-generating component supported by the chassis, and a damper that separates the chassis from the base to reduce transmission of vibrations from the vibration-generating component to the base. The damper includes a body and first and second slots defined on a side of the body. A portion of the chassis is received in the first slot, and the second slot is positioned between the first slot and the base to reduce transmission of vibrations of the base.

[0028] Optionally, in some embodiments, the first slot and the second slot form a continuous space on the side of the body of the shock absorber such that the portion of the chassis occupies the first slot and the second slot is positioned immediately below the portion of the chassis.

[0029] Optionally, in some embodiments, the second slot is separated from the first slot by a portion of the body of the bumper.

[0030] Optionally, in some embodiments, the chassis includes an engagement arm and the portion of the chassis includes a portion of the engagement arm.

[0031] Optionally, in some embodiments, the second slot is separated from the engagement arm by a portion of the body of the bumper.

[0032] Optionally, in some embodiments, the engagement arm includes a first engagement arm, the chassis further includes a second engagement arm, and a portion of the body of the shock absorber is positioned between the first engagement arm and the second engagement arm.

[0033] Optionally, in some embodiments, the first engagement arm is positioned above the portion of the body of the shock absorber and the second engagement arm is positioned in the first slot below the portion of the body of the shock absorber.

[0034] Those skilled in the art will understand that each of the various aspects and features of the present disclosure may be advantageously used separately in some cases or in combination with other aspects and features of the present disclosure in other cases. Accordingly, individual aspects may be claimed separately or in combination with other aspects and features. That is, the present disclosure is merely exemplary in nature and is in no way intended to limit the scope of the claims or their application or use. It is to be understood that structural and / or logical changes can be made without departing from the spirit and scope of the present disclosure.

[0035] The present disclosure recites various levels of detail, and the inclusion or exclusion of elements or components in this Summary of the Invention is not intended to limit the scope of the claimed subject matter. In certain instances, details that are not necessary for understanding the present disclosure or that make other details difficult to envision may be omitted. Moreover, for purposes of clarity, detailed descriptions of certain features will not be discussed when they are believed to be apparent to those skilled in the art so as not to obscure the description of the present disclosure. The claimed subject matter is not necessarily limited to the arrangements exemplified herein, and the scope of the present disclosure is defined solely by the appended claims.

[0036] The present invention will be more fully understood by reference to the following drawings, in which components may not be drawn to scale and which are presented as various embodiments of the oral irrigators and / or vibration isolators described herein and should not be construed as a complete depiction of the scope of claimed features. [Brief explanation of the drawings]

[0037] [Figure 1]FIG. 1 is an isometric view of an oral irrigator including an isolator assembly. [Figure 2A] FIG. 1 is a top isometric view of an isolator assembly. [Figure 2B] FIG. 2 is a top view of the isolator assembly. [Figure 3] FIG. 2 is an exploded view of the isolator assembly. [Figure 4] FIG. 4 is a cross-sectional view of the isolator assembly taken along line 4-4 of FIG. 2A. [Figure 5A] FIG. 1 is a bottom exploded view of the isolator assembly. [Figure 5B] FIG. 10 is a bottom isometric view of an isolator assembly with the tail coupled to a shock absorber. [Figure 5C] FIG. 16 is a bottom isometric view of the isolator assembly with the tail removed. [Figure 6A] FIG. 10 is a top isometric view of another embodiment of an isolator assembly. [Figure 6B] FIG. 6B is a side view of the isolator assembly of FIG. 6A. [Figure 6C] FIG. 6B is a top view of the isolator assembly of FIG. 6A. [Figure 7] 7 is a cross-sectional view of the isolator assembly of FIG. 6A taken along line 7-7 of FIG. 6A. [Figure 8] 8 is a cross-sectional view of the isolator assembly of FIG. 6A taken along line 8-8 of FIG. 6A. [Figure 9] 9A is a cross-sectional view of the isolator assembly of FIG. 9 taken along line 9-9 of FIG. 6C. [Figure 10] FIG. 9 is a cross-sectional view of an embodiment of an isolator assembly taken along a line similar to 9-9. [Figure 11] FIG. 9 is a cross-sectional view of an embodiment of an isolator assembly taken along a line similar to 9-9. [Figure 12] FIG. 1 is a perspective view of an embodiment of an oral irrigator including an isolator assembly. [Figure 13] FIG. 13 is an exploded view of the oral irrigator of FIG. 12. [Figure 14A] 14A is a cross-sectional view of the oral irrigator of FIG. 12 taken along line 14A-14A of FIG. 12. [Figure 14B] FIG. 14B is an enlarged view of the cross-sectional view of FIG. 14A. [Figure 15A] FIG. 13 is a top isometric view of a pump housing for the oral irrigator of FIG. 12. [Figure 15B] FIG. 15B is a top view of the pump housing of FIG. 15A. [Figure 16] A top view of the lower housing base for the oral irrigator of Figure 12. [Figure 17] FIG. 13 is a partial isometric view of the oral irrigator of FIG. 12.

[0038] Embodiments of the present invention and their advantages are best understood by referring to the following detailed description. It should be appreciated that like reference numerals are used to identify like elements illustrated in one or more of the figures. DETAILED DESCRIPTION OF THE INVENTION

[0039] The disclosed embodiments of the present invention relate to components of an oral irrigator, which may include an improved configuration for a vibration isolator or damper that can be used in conjunction with one or more pump assemblies, pump housings, and / or drive assemblies, which may all be used together (as shown in the various figures) or may be used separately from one another depending on the type of oral irrigator (e.g., countertop vs. handheld) and spacing / dimensions, etc. Therefore, any description of any particular element, feature, component, or assembly, etc., should be understood as a stand-alone element or as it may be integrated into a system. While the description presented herein relates to an oral irrigator, the concepts and embodiments are applicable to other types of oral hygiene devices, including but not limited to brushing devices, combined cleaning / brushing devices, or other elements capable of pumping fluid from one location to another, such as a reservoir.

[0040] Some embodiments disclose an isolator assembly for use in damping vibrations and / or reducing noise (e.g., emanating from a drive assembly and / or a pump assembly) for an oral hygiene device, such as an oral irrigator. The isolator assembly can include a chassis that couples with and / or receives one or more vibration-inducing components, such as drive assembly or pump assembly components. The chassis can include plates or surfaces for coupling with various components and / or can include sidewalls and / or define an enclosure depending on the desired structure of the drive assembly or pump assembly. The chassis can include one or more engagement arms that couple with a bumper, where the bumper couples the chassis to a mounting surface, such as a surface of the oral irrigator housing or a different surface. The bumper separates the chassis from the mounting surface and defines a gap between the two components, e.g., so that the chassis contacts the mounting surface through the bumper.

[0041] In many embodiments, the isolator assembly can include two engagement arms, where a first engagement arm contacts a first surface (e.g., a top surface or engagement surface) of the snubber, and a second engagement arm abuts or contacts a second and / or third surface (e.g., a pocket surface) of the snubber. For example, the snubber can include a slot or pocket, where the second arm is partially received within the pocket and the first engagement arm sits on the top surface above the pocket. In this manner, the engagement arms transfer chassis loads to the snubber. In some embodiments, the pocket reduces the cross-sectional thickness of certain portions of the snubber, such as between the first engagement arm and the housing; this reduced thickness can help increase vibration damping by introducing increased flexibility into the interface connection and including a longer transmission path from the first engagement arm to the housing.

[0042] The engagement arms can be formed in a variety of configurations and can extend directly from the chassis or be otherwise coupled to the chassis. Similarly, the engagement arms can be positioned, angled, and / or structured based on space constraints within the oral irrigator housing, drive assembly or pump assembly requirements, etc.

[0043] It should be noted that the engagement arms and bumpers can be considered isolation mounts, and that there can be any number of isolation mounts in a device depending on the load, space constraints, etc. In one embodiment, there can be three isolation mounts, while in other examples there can be two, four, or even more isolation mounts. However, in embodiments with three isolation mounts, the overall connection to the mounting surface is more flexible, reducing vibration transmission, but also sufficiently rigid to secure the isolation assembly in place within the housing.

[0044] FIG. 1 shows an oral irrigator including one or more of the isolator assemblies described herein. The oral irrigator 100 may include a reservoir 102 that holds and supplies a fluid, such as water or mouthwash, to a pump. In cases where the oral irrigator 100 is a countertop unit, the reservoir 102 may be coupled to a housing 110 or base, and in cases where the oral irrigator 100 is a handheld unit, the reservoir 102 may be coupled to a handle 104 or handpiece of the oral irrigator 100. In this regard, the size and volume capacity of the reservoir 102 may be based on the type and configuration of the oral irrigator 100. The reservoir 102 may include a reservoir outlet, such as a port or plug, or a valve, that is fluidly connected to other components of the oral irrigator 100 (e.g., the pump assembly).

[0045] Continuing with reference to FIG. 1 , the oral irrigator 100 may include a housing 110 or base portion, which, in the embodiment shown in FIG. 1 , acts to support the oral irrigator 100 on a surface (e.g., a counter) and, optionally, may support the reservoir 102. In some cases, the housing 110 may be configured as a counter support, while in other cases, it may be formed as a handle portion or a portion that is held in a user's hand during use. The housing 110 supports and / or encloses one or more components of the oral irrigator 100, such as the pump assembly 112 and / or the drive assembly 114. Additionally, the housing 110 may include flow paths (e.g., tubes, hoses) that direct fluid between different components of the oral irrigator, such as between the reservoir 102 and the pump assembly 112 and / or between the drive assembly 114 and an outlet, such as a handle.

[0046] The handle 104 may be in fluid communication with the reservoir 102, such as through a hose 108 or other fluid connector. The handle 104 may include a tip 106 or other outlet device capable of directing fluid from the reservoir 102 into the user's oral cavity. The handle 104 may be configured to be held in a user's hand, and in embodiments in which the oral irrigator 100 is configured as a handheld device, may include features of a housing 110, such as a pump assembly 112 and / or a drive assembly 114 coupled to or positioned within the handle 104. The handle 104 may also include features for securing the tip 106 thereto and, optionally, for enabling the tip 106 to be removed therefrom. The tip 106 may be in the form of a jet tip or other tip configuration and may include, for example, bristles (e.g., a nozzle integrated into a brush head) or a tongue scraper.

[0047] The pump assembly 112 can include various pump components that assist in pumping and directing fluid from the reservoir 102 into the handle 104 and tip 106. For example, the pump assembly 112 can include a pump body, a piston, a connecting rod, and / or one or more valves. An example of a pump assembly can be found in U.S. Pat. No. 8,888,727, entitled "Vibration Damping for Dental Water Jets," the contents of which are incorporated herein for all purposes. Similarly, the drive assembly 114 can be operatively coupled to the pump assembly 112 and can be configured to include one or more drive elements (e.g., a motor, a linkage, a gear, a gear support, etc.). The drive assembly 114 assists in driving or operating the pump assembly 112 or its components and is described in more detail below. An example of a drive assembly can also be found in the '727 patent mentioned above.

[0048] 2A-3 show various views of an isolator assembly 120 that can be used in conjunction with the oral irrigator 100 of FIG. 1. The isolator assembly 120 is used to support and / or house one or more components of the pump assembly 112 and / or the drive assembly 114 and can act to reduce or dampen vibrations and noise generated by one or both of the assemblies 112, 114. For example, the isolator assembly 120 can be positioned within the housing 110 and can couple portions of the drive assembly 112 and the pump assembly 114 to the housing 110; for example, the isolator assembly 120 can be positioned between the assemblies 112, 114 or otherwise configured to absorb forces generated by the assemblies 112, 114 and reduce forces transmitted to the housing.

[0049] The oral irrigator 100 may include one or more isolator assemblies 120 depending on space constraints and / or the vibration-inducing components utilized within the oral irrigator 100. For example, if the pump assembly 112 and the drive assembly 114 are large or need to be distributed in different areas within the housing 110, the oral irrigator 100 may include two or more separate isolator assemblies 120, for example, one for the pump assembly 112 and one for the drive assembly 114.

[0050] The chassis 124 may form a portion of the isolator assembly 120 and may be configured to support, house, surround, or otherwise couple to components of, or the entirety of, the pump assembly 112 and / or the drive assembly 114. In one example, the chassis 124 may include one or more internal cavities to form a gearbox that houses gears of the drive assembly 114, may include a pump body portion that houses a pump piston, and / or may receive a portion of a connecting component, such as a connecting rod. In another example, the chassis 124 may partially form or define a flat surface, such as a plate, on which the pump assembly 112 and / or the drive assembly 114 may be supported; for example, the drive assembly 114 may be mounted to a top surface of the chassis 124. In this regard, while the chassis 124 is shown as a single element, it may be formed as a multi-element component, including, for example, a bottom portion and a top portion that together define receiving cavities therein for receiving various components. Chassis 124 is intended to encompass nearly any type of housing element capable of supporting or defining a portion of pump assembly 112 and / or drive assembly 114 .

[0051] The mounting surface 122 or substrate supports the chassis 124 and can be coupled to the chassis 124 through one or more isolated mounts 126a, 126b, 126c. The mounting surface 122 can form a portion of the housing 110 of the oral irrigator 100, for example, the bottom or inner surface of the housing 110. It should be noted that although the mounting surface 122 is shown as a single component, in various embodiments it can be a separate and / or separated surface within or forming a part of the housing 110. In other words, the isolated mounts 126a, 126b, 126c can be coupled to different surfaces or portions of the housing 110.

[0052] Referring to FIG. 3 , one or more brackets 130a, 130b, 130c, or ribs may be defined on the top or first side of the mounting surface 122. The brackets 130a, 130b, 130c may act as stops to limit movement of the isolated mounts 126a, 126b, 126c relative to the mounting surface 122. For example, the brackets 130a, 130b, 130c may be configured to engage or abut a portion of the isolated mounts 126a, 126b, 126c. In one example, the brackets 130a, 130b, 130c may be formed to include a central curved portion with two adjacent legs extending therefrom, for example, as a flat U-shaped structure. The brackets 130a, 130b, 130c may be integrally molded with the mounting surface 122 or may be coupled to the mounting surface 122. Brackets 130 a , 130 b , 130 c can be configured to reduce rotation of isolation mounts 126 a , 126 b , 126 c to help secure isolation assembly 120 in a fixed position relative to housing 110 .

[0053] Continuing with reference to FIGURE 3, mounting surface 122 may define one or more receiving apertures 128a, 128b, 128c. Receiving apertures 128a, 128b, 128c may be positioned to be partially surrounded by brackets 130a, 130b, 130c. For example, receiving apertures 128a, 128b, 128c may be defined adjacent to curved portions of brackets 130a, 130b, 130c (in embodiments where brackets 130a, 130b, 130c are shaped as shown in FIGURE 3).

[0054] The isolation assembly 120 may include one or more isolation mounts 126a, 126b, 126c that may be coupled to the chassis 124 to support the isolation housing 124 within the housing 110, as well as act to dampen or otherwise reduce vibrations or noise emanating from components within the chassis 124 or components coupled to the isolation housing 124.

[0055] The isolation mounts 126a, 126b, 126c may include a damper 132. The damper 132 may be configured to absorb forces and vibrations. For example, the damper 132 may be formed of or include a flexible material, such as an elastomer or rubber material.

[0056] FIG. 4 shows a cross-sectional view of the isolation assembly taken along line 4-4 in FIG. 2B. Referring to FIGS. 3 and 4, the bumper 132 can include a pocket 136 or slot for receiving a portion of the isolation mount 126a, 126b, 126c. The bumper 132 can include a top surface 134 or engagement surface and a bottom surface 146 that are connectable to one another through one or more side walls 150. The side walls 150 can include straight and / or curved portions. In many embodiments, the side walls 150 can include rounded edges to help distribute forces when the bumper 132 engages different components and / or ensure a snug fit against adjacent components, such as the brackets 130a, 130b, 130c. For example, in some embodiments, the bumper 132 can be generally formed as a triangular shape with a rounded base and a curved transition surface. However, as can be appreciated, the damper 132 can take a variety of different shapes depending on the configuration of the housing 110, the pump assembly 112, and / or the drive assembly 114, and therefore, the description of any particular implementation is for illustrative purposes only.

[0057] The mounting head 148 may extend from the bottom surface 146 and may include a neck 138 and an enlarged tip 152. The shape of the mounting head 148 may be selected to help facilitate connection of the bumper 132 to the mounting surface 122, as discussed in more detail below. Referring to FIG. 3 , in some embodiments, the mounting head 148 may also include a tail 154 extending from the tip 152. The tail 154 may be used to aid in installation of the mounting head 148 and may be later removed or omitted depending on the assembly of the isolator assembly 120.

[0058] The pocket 136 is defined through a portion of the snubber 132 and may define, for example, a recess or slot extending into the body of the snubber 132. For example, the pocket 136 may be defined as a slot. The pocket 136 may be formed in one or more side walls of the snubber 132 such that the pocket 136 opening is accessible through the side and / or front of the snubber 132. With reference to FIG. 4 , the pocket 136 may be defined by a pocket top surface 142 and a pocket bottom surface 144, or first and second pocket surfaces. The pocket 136 may also include a side or rear wall 156 or third pocket surface. The pocket top surface 142 may be parallel to and adjacent to the top surface 134, such that a snubber flange 158 or snubber portion may be defined between the two surfaces 134, 142.

[0059] 3 , the one or more engagement arms 164, 166 can extend from, be coupled to, or otherwise form a portion of the chassis 124. In examples where the chassis 124 includes a flat surface or plate, the engagement arms 164, 166 can extend outward from a portion of the surface, or the chassis 124 can include raised portions (e.g., tabs) that can provide support for the engagement arms 164, 166. In other examples, the engagement arms 164, 166 can extend from a side wall, a top wall, and / or a bottom wall of the chassis 124 (e.g., when the chassis 124 defines a sealed or partially sealed housing). The isolator mounts 126 a, 126 b, 126 c can include a pair of engagement arms 164, 166 configured to be coupled to the bumper 132. The engagement arms 164, 166 can include at least one parallel portion, or can be parallel to one another along their lengths, with the first engagement arm 164 positioned above the second engagement arm 166, as shown in FIG. 3 . In other words, the two engagement arms 164, 166 can be separated from one another by a gap and extend outward from the exterior surface of the chassis 124. In one example (see FIG. 4 ), the first engagement arm 164 can have a shorter length than the second engagement arm 166. The extended length of the second engagement arm 166 can allow the second engagement arm 166 to engage the rear wall 156 of the pocket 136, which helps prevent additional movement between the engagement arm 166 and the bumper 132, such as sliding of the engagement arm 166 during application of force (the engagement against the rear wall acts to limit movement). In other embodiments, the second engagement arm 166 can have a shorter length (eg, not abutting the rear wall of the pocket) to introduce movement that can increase flexibility.

[0060] As can be appreciated, the length and configuration of the engagement arms 164, 166 can be varied based on space constraints within the housing 110 of the oral irrigator 100, the configuration of the chassis 124, etc. Figures 6A-9 illustrate various examples of engagement arms 164, 166 that can be used in conjunction with the isolator assembly 120. The engagement arms 164, 166 can act to support and connect the chassis 124 (and any components supported or coupled thereto) to the bumper 132.

[0061] Referring again to FIG. 3, the chassis 124 can have a varying number or pairs of engagement arms 164, 166, but in one example can include three pairs of engagement arms that can be spaced around the exterior of the chassis 124, and the spacing can be configured to help maintain the connection between the engagement arms 164, 166 and the shock absorber 132 (e.g., evenly spaced to help offset forces in different directions and distribute the load).

[0062] 5A-5C show various views of isolator assembly 120 during coupling of the various components. With reference to FIG. 5A, one or more components of pump assembly 112 and / or drive assembly 114 may be positioned within chassis 124. For example, one or more gears, connecting arms, pistons, or other components may be positioned within chassis 124 or partially within chassis 124. The various components may be coupled to chassis 124 after or before chassis 124 is coupled to mounting surface 122.

[0063] The bumper 132 can be coupled to the engagement arms 164, 166. For example, with brief reference to FIG. 4 , the first bumper flange 158 can be positioned between the two engagement arms 164, 166, such that the first engagement arm 164 can be positioned on and engage the top surface 134 or engagement surface of the bumper 132, and the second engagement arm 166 can be inserted into or at least partially received within the pocket 136. In some configurations, the first bumper flange 158 can be gripped or sandwiched between the two engagement arms. Positioning the first engagement arm 164 on the top surface 134 of the bumper 132 can help prevent the flange 158 from deflecting away from the engagement arm 164 when a load is applied to the chassis 124, and the weight of the chassis 124 can be transferred to the bumper 132 through the engagement of the top surface 134.

[0064] The second engagement arm 166 can be positioned so that its top surface abuts the top surface 142 of the pocket 136. In many configurations, a space can exist between the bottom surface of the second engagement arm 166 and the bottom surface 144 of the pocket 136; for example, the thickness of the second engagement arm 166 can be less than the height of the pocket 136, so that the second engagement arm 166 does not contact the bottom surface 144 of the pocket 136. In some embodiments, a single engagement arm can be used to connect to the bumper 132; in such cases, the first engagement arm 164 can engage the top surface 134 and the second arm can be omitted. In these embodiments, the connection between the bumper 132 and the engagement arm 164 can be less rigid than dual-arm embodiments, thereby reducing vibration transmitted between the two components. In some cases, one or more stops positioned on the engagement arm and / or the bumper can be used to help secure the two components together. Once the first isolation mount 126a is assembled, the other isolation mounts can be assembled in a similar manner, for example, by coupling the bumpers 132 to various pairs of engagement arms 164,166.

[0065] The isolation mounts 126a, 126b, and 126c can be coupled to the mounting surface 122. For example, the bumper 132 can be coupled to the mounting surface 122, such as by positioning the tail 154 within each of the receiving openings 128a, 128b, and 128c on the mounting surface 122. The tail 154 can then be pulled to elongate the mounting head 148, causing the mounting head 148 to deform and be received through the receiving openings 128a, 128b, and 128c. Referring to FIG. 5B , after the mounting head 148 passes through the receiving openings 128a, 128b, and 128c, the force on the tail 154 can be removed, and the resilient mounting head 148 will return to its original shape. The original shape of the mounting head 148 has a larger diameter than the receiving openings 128a, 128b, and 128c, securing the bumper 132 to the mounting surface 122. For example, the neck 138 can extend through the mounting surface 122, and the mounting head 148 can be positioned on the outside or bottom side of the mounting surface 122. The mounting head 148 can then prevent the bumper 132 from being accidentally removed from the mounting surface 122.

[0066] 5C, in some embodiments, the tail 154 portion of the snubber 132 can be detached after installation. For example, the tail 154 can be clipped or otherwise detachable from the mounting head 148 to aid in positioning the isolator assembly 120 within the housing 110 and to help prevent the mounting head 148 from becoming dislodged after installation.

[0067] 2A and 4, when connected to the mounting surface 122, the bumpers 132 of the isolation mounts 126a, 126b, 126c can be positioned to abut the brackets 130a, 130b, 130c. In this manner, the isolation assembly 120 is fixed in position relative to the mounting surface 122, and the bumpers 132 secure the isolation assembly 120 and limit vertical movement of the chassis 124 relative to the mounting surface 122. Similarly, the brackets 130a, 130b, 130c help reduce or prevent lateral movement of the isolation assembly 120 relative to the mounting surface 122. In an assembled state or as part of the assembly process, the mounting surface 122 can be positioned within or secured to the housing 110 of the oral irrigator 100, and drive or pump components positioned within or coupled to the chassis 124 can be coupled to other components. In one example, the mounting surface 122 can form a portion of the bottom surface of the housing 110 of the oral irrigator 100, so that other components can also be coupled thereto. In another example, the mounting surface 122 can be a separate floor or surface coupled within the housing.

[0068] 4 , during operation of the oral irrigator 100 (e.g., during operation of the pump assembly 112 and / or the drive assembly 114), the isolator assembly 120 can reduce (e.g., attenuate energy from) vibrations and / or noise that may occur during operation. For example, when the motor begins to drive a piston that forms part of the pump assembly 112, vibrations generated by the movement of the piston, drive shaft, and / or gears may be transmitted from the chassis 124 to the engagement arms 164, 166. Due to the engagement arms 164, 166 being coupled to the damper 132, the engagement arms 164, 166 can transmit their force to the damper 132. The first engagement arm 164 can engage with the upper surface 134 of the damper 132. The second engagement arm 166 can engage with a surface within the pocket with an upward force or other force that occurs in a direction opposite to the force transmitted from the first engagement arm 164. Snubber 132 can flex and deform both vertically and horizontally to absorb forces generated by drive assembly 114 and / or pump assembly 112. For example, variations in cross-sectional thickness (e.g., along the height or in the load direction) and / or gaps in the body of the snubber (e.g., a pocket or gap between second engagement arm 166 and the bottom surface of pocket 136) can help reduce joint stiffness and reduce force transmission to the mounting surface.

[0069] In conventional damping arrangements for oral irrigators, the only damping function is often to connect the noisy components to a compressible material, such as rubber, and the joint or connection between the pump or motor housing is rigid or substantially rigid. In this manner, a large amount of vibration can be transmitted from the drive assembly or pump assembly to the housing, resulting in noise and other undesirable user experiences. Therefore, the more flexible connection of the isolator assembly 120 improves energy damping, transmitting less vibration to the housing 110, providing a more comfortable user experience and reducing wear and tear on components that can occur due to vibration.

[0070] As mentioned above, the various components of the isolator assembly can be modified based on the configuration within the oral irrigator as well as the desired damping function. For example, FIGS. 6A-11 illustrate various views of different configurations of the isolator assembly 120. It should be noted that the various components shown in FIGS. 6A-11 can be used together or separately. For example, certain features of the engagement arms, engagement features, and / or bumpers can be combined with other examples described herein, and the description of any complete configuration is for illustrative purposes only. In that regard, unless any element in FIGS. 6A-11 is explicitly described, it can be considered the same as or similar to the element described above with respect to FIGS. 2-5.

[0071] 6A-6C , an isolator assembly 200 is disclosed that is substantially similar to the isolator assembly 120 but can include various configurations of engagement arms and / or mounting surfaces. More specifically, the mounting surface 222 can be configured to include an uneven surface and can include a ledge 223 or raised feature that can be formed or coupled to the mounting surface 222. For example, the ledge 223 can be formed as a raised element that can provide additional clearance in that area of ​​the mounting surface 222 relative to the housing 110 or support surface of the oral irrigator 100. In this example, one of the isolator mounts 226 a, 226 b, 226 c can be coupled to a portion of the ledge 223 of the mounting surface 222, thereby elevating that bumper 132 relative to the other bumpers 132. It should be noted that the mounting surface 222 can include multiple surface areas that are raised, recessed, or otherwise configured, and any description of any particular surface configuration is for illustrative purposes.

[0072] In some embodiments, the engagement arms can vary and include engagement features for different anchoring locations and / or bumpers relative to the chassis. For example, with reference to FIGS. 6A and 7 , the first isolator mount 226 a can include engagement arms 264, 266 that can be coupled to the chassis 124 at the same location. For example, the anchoring branch 265 can extend from a sidewall of the chassis 124, and the first engagement arm 264 can include an extension portion coupled to the anchoring branch 265 and extend upward from the anchoring branch 265. The anchoring branch 265 can then continue to extend to form the second engagement arm 266. Thus, the two engagement arms 264, 266 can be positioned parallel to and spaced apart from each other (e.g., above or below) but can include a single anchoring location relative to the chassis 124. 6A and 7 includes an anchoring branch 265 formed on the second engagement arm 266, but in other configurations, the anchoring branch 265 can be formed on the first engagement arm 264 and the second engagement arm 266 can extend downward therefrom.

[0073] 6A, 6B, and 8, in some examples, the engagement arm can include a fastening branch 261 that couples the engagement arm to the chassis 124, but the engagement arms 263, 267 can extend in a different direction, e.g., angled, relative to the fastening branch 261. For example, the engagement arm 267 can extend at a right angle relative to the fastening branch 261, allowing the bumper 132 and chassis 124 to be more easily positioned or otherwise accommodated within the available space in the housing 110. In this example, the second engagement arm 263 can also include a base portion 269 that can be configured to wrap around the shelf 223 of the mounting surface 222. However, in other configurations, the base portion 269 can be omitted.

[0074] 9, in isolator mount 226b, engagement arms 274, 276 and / or bumper 132 may include one or more stops 273a, 273b, 273c extending from their top or bottom surfaces and configured to limit movement of engagement arms 274, 276 relative to bumper 132 in at least one direction. For example, stops 273a, 273b, 273c may limit horizontal or lateral movement. In some embodiments, stops 273a, 273b, 273c may be used to eliminate the need for two engagement arms while still maintaining sufficient coupling between the engagement arms and bumper.

[0075] Referring to FIG. 10 , another example of the snubber 132 is disclosed. In this example, the snubber 132 can include a second pocket or gap 277, and the engagement surface 234 between the first engagement arm 274 and the snubber 132 can be absent from the top surface 235 of the snubber 132. In this example, an upper flange 275 can be defined, and the snubber 132 can include two pockets 136, 277, which can take the form of slots. In some examples, the two pockets 136, 277 can have similar dimensions, or the pocket 136 can be deeper or have a longer length than the upper pocket 277, as shown in FIG. 10 . However, in various examples, the pockets 136, 277 act to reduce the thickness of the snubber 132 at different locations to reduce the transmission of vibrations. In this example, the second engagement arm 276 can be omitted, and the upper pocket 277 can act to grip or pinch the first engagement arm 274 to hold it in place relative to the snubber 132.

[0076] For example, referring to Figure 11, the second engagement arm 276 is omitted, and the upper pocket 277 clamps around the first engagement arm 274 to secure it in place. In the embodiment shown in Figure 11, the bumper 132 may be more flexible because the stiffness of the bumper 132 can be reduced along its height due to the changes (e.g., reduced thickness) made by the pockets 277, 136, reducing the contact points between the chassis 124 and the bumper 132. This helps reduce the transmission of forces (e.g., vibrations) by the bumper 132.

[0077] As can be appreciated, any feature of the isolator assembly 200 can be incorporated into a feature of the isolator assembly 120, and vice versa. For example, the engagement arms 164, 166 of the isolator assembly 120 can be configured to have a flat, planar bottom surface (e.g., omitting the engagement feature 168). Similarly, the engagement arms 164, 166 can include branches or be angled to connect to the buffer 132 when needed, based on the internal spatial configuration of the oral irrigator 100.

[0078] 12-17 show an embodiment of an oral irrigator 1000 including an isolator assembly. The oral irrigator 100 may include a reservoir 1102 that holds and supplies a fluid, such as water or mouthwash, to a pump assembly 1123 (e.g., shown in FIGS. 13, 14A, and 14B and partially in FIG. 15). In cases where the oral irrigator 1000 is a countertop unit, the reservoir 1102 may be coupled to a housing or base 1104. In cases where the oral irrigator 1000 is a handheld unit, the reservoir 1102 may be coupled to a handle or handpiece of the oral irrigator 1000. The irrigator 1000 may include a lower housing 1124 coupled to the base 1104, which supports the irrigator 1000 above a surface, such as via one or more support feet 1130a, 1130b, 1130c, and 1130d coupled thereto. The base 1104 can define a compartment 1105 for receiving various components. In that regard, the size and volume capacity of the reservoir 1102 can be based on the type and configuration of the oral irrigator 100. The reservoir 102 can include a reservoir outlet, such as a port or plug, or a valve, that is fluidly connected to other components of the oral irrigator 100 (e.g., the pump assembly 1123).

[0079] The cleaner 1000 includes a lid assembly 1106 configured to be positioned over and cover the reservoir 1102 to, for example, prevent debris from falling into the reservoir cavity. The lid assembly 1106 can be removable, or in some examples, can be partially movable such that the reservoir cavity is accessible without removing the lid assembly 1106. In one example, the lid assembly 106 can include a first or fixed portion 1120a and a second or hinged portion 1120b. The hinged portion 1120b can pivot relative to the fixed portion 1120a to define an access opening to the reservoir cavity 1172, for example, allowing a user to refill the reservoir 1102 without removing the entire lid assembly 1106.

[0080] The oral irrigator 1000 may include a control assembly 1180, which may include a display 1186 and one or more actuators configured to allow a user to control the irrigator 1000. The oral irrigator 1000 includes a handle assembly 1108 coupled to a tip 1110 and an actuator or pause button 1109. The handle 1108 is fluidly connected to a pump assembly through a hose 1112 that delivers fluid from the reservoir 1102 to the tip 1110. The oral irrigator 1000 includes a drive assembly 1122 that mechanically drives the pump 1123.

[0081] For example, referring to the exploded view of the oral irrigator 1000 shown in FIG. 13 , the oral irrigator 1000 includes a hose fitting 1118 that couples the hose 1112 to a pump assembly 1122. The oral irrigator 1000 may include a mandrel 1116 coupled to the base 1104 around which the hose 1112 can be stored. A magnet 1126 may be positioned or captured within a pocket defined on the inner surface of the mandrel 1116. The hose 1112 may be wrapped around the outer surface of the mandrel 1116, housed with the handle 1108, and secured in place via the magnet 126.

[0082] The oral irrigator 1000 includes a valve assembly 1132 that fluidly connects the reservoir 1102, the pump assembly 1123, and the handle 1108 to one another. The valve assembly 1132 can be configured to allow bypass flow of fluid back to the reservoir 1102, such as when flow through an outlet (e.g., the handle 1108) is obstructed, such as by actuation of the handle actuator or pause button 1109. The oral irrigator 1000 can include a reservoir valve assembly 1290 connected to an upper end of the valve assembly 1132 and mounted on a valve housing.

[0083] 14A , the motor wall 1204 can extend downward from the bottom surface 1212 of the housing 1124. The motor wall 1204 can define a substantially closed or completely closed shape, such as a cylindrical extension with an opening, e.g., a discontinuous curved wall, as shown in FIG. 14A . In this manner, the motor wall 1204 can more easily receive and secure certain components, such as a motor, in place. However, in other embodiments, the motor wall 1204 will be completely continuous and configured to encase the respective drive assembly component, e.g., the motor 1228. The motor wall 1204 can be particularly useful when the motor 1228 is not rigidly mounted to the housing, as the motor 1228 has more flexibility to move within the base 1104; the motor wall 1204 helps ensure that the motor 1228 does not move significantly and remains aligned, even after being subjected to a large force (e.g., due to a drop force if a user drops the unit).

[0084] 14B , one or more bumpers 1428 can be used to couple the pump housings 1244a, 1244b to the base 1104. The bumpers 1428 can be configured to absorb vibrations and reduce forces transmitted to the base 1104. In one example, the bumper 1428 can include a main body configured to couple to the mount support 1280 and having a slot 1430 formed in a sidewall thereof to define an engagement arm 1432 and a bottom arm 1434. The two arms 1432, 1434 can extend parallel to one another and be separated by the thickness of the slot 1430. Protrusions 1436a, 1436b can be formed on an inner surface of one or both of the engagement arm 1432 and the bottom arm 1434. In the example shown in FIGS. 14A and 14B , the inner surfaces of the engagement arm 1432 and the bottom arm 1434 each include adjacently disposed protrusions 1436a, 1436b.

[0085] The mounting head 1438 can extend from the bottom arm 1434 and can include a neck and flange portion, and can be configured to deform to fit through an opening in the base 1104 and extend back to its original configuration to secure the bumper 1428 to the base 1104. As can be appreciated, the bumper 1428 can generally be formed from a flexible material, such as rubber.

[0086] In one example, the oral irrigator 1000 can include bumpers 1428 that can be coupled to different dispensing sections of the pump housings 1244a, 1244b, although other configurations can use a different number of bumpers 1428. In an example including three bumpers 1428, the assembly is configured to allow slight movement of the pump housings 1244a, 1244b due to being supported within the base 1104 as well as including three fixation points (rather than four or more), which can result in some instability and may further help prevent vibration transmission to the base 1104 because movement requires energy and reduces the overall energy available for transmission to the base 1104.

[0087] 14B and 15A-B, the snubber 1428 can be coupled to the pump housing 1244, e.g., the lower pump housing 1244b. In one embodiment, the snubber 1428 can be connected to the mount support 1280, e.g., can receive the engagement arm 1432 between the first arm 1282 and the second arm 1284 of the mount support 1280. In one embodiment, the protrusion 1436a can be positioned within a recess 1286 defined on the top surface of the second arm 1284. In some embodiments, the thickness of the second arm 1284 of the pump mount 1280 can be configured such that it does not engage the bottom arm 1434 of the snubber 1428. In other words, there can be a space between the bottom surface of the second arm 1284 of the pump mount 1280 and the top surface of the bottom arm 1434 of the snubber 1428. This spacing can help absorb energy in the snubber 1428 and reduce transmission to the base 1104. In some examples, the coupling between the pump housing 1244, motor 1228, and shock absorber 1428 can act to substantially cantilever the motor 1228 and many components of the drive and pump assemblies 1122, 1123, which can help reduce vibration transmission during use as these assemblies are allowed some movement.

[0088] 14A, 14B, and 16, the pump and drive assemblies 1123, 1122 can be secured in place relative to the lower housing 1124 of the base 1104. For example, the mounting head 1438 of the bumper 1428 can be inserted into the isolator openings 1386a, 1386b, 1386c in the lower housing 1124. The mounting head 1438 can be deformed and forced through the openings 1386a, 1386b, 1386c, and then extend out again once outside the lower housing 1124 to secure the bumper 1428 in place. Bumpers 1374a, 1374b, 1374c can be positioned around the exterior sidewalls of the bumper 1428 and help provide lateral support to the bumper 1428 within the lower housing 1124. In some embodiments, the bumpers 1374a, 1374b, 1374c extend around and follow the shape of the bumper 1428, e.g., have a slight bend to change direction with the exterior sidewalls of the bumper 1428, and have a height configured to be less than half the height of the main body of the bumper 1428 (e.g., the portion of the bumper 1428 that extends inside the lower housing 1124 and does not include the height of the mounting head 1438). Furthermore, due to the angled slopes of the bumpers 1374a, 1374b, 1374c on the bumper-facing sides, the sidewalls of the bumpers 1374a, 1374b, 1374c and the sidewalls of the bumper 1428 are not parallel and may be spaced apart from one another. This defines a movement space (see FIGS. 14B and 16) that includes additional room for the snubbers 1428 to deform before abutting the walls of the bumpers 1374a, 1374b, 1374c, e.g., increasing or maximizing the flexure for the snubbers so that they can absorb more vibration than other configurations. Additionally, the angled surface on the side of the bumper facing the snubber can help re-seat the snubber 1428 as it flexes or moves during use or transport of the unit. For example, the angled surface slopes downward to encourage the snubbers 1428 to slide back into position.

[0089] 15A and 15B, the pump housing 1244 is integrally formed to define a gear housing that supports drive elements of the drive assembly 1122, such as one or more gears, motors, linkages, and / or gear shafts. More specifically, the second pump housing 1244b can include an outer wall 1258 that is defined as a continuous wall and extends around the periphery to define both a drive element or gear element compartment 1260 and a pump chamber 1246. The gear compartment 1260 can be shaped and sized to receive various elements of the drive assembly and / or pump assembly 1123. The gear compartment 1260 can be connected to the pump chamber 1246 such that fluid can flow between the gear compartment 1260 and the pump chamber 1246 without sealing elements, such as components of the pump assembly 1122.

[0090] The outer wall 1258 transitions to define the outer periphery of the second gear housing 1244b, and the outer wall 1258 can form a pump extension 1262 that can extend from a portion of the outer wall 1258. The pump extension 1262 includes the outer wall and defines a pump chamber 1246 therein. The pump chamber 1246 can be open at either end, with one end opening to the gear section 1260 and the other end, i.e., piston end 1268, forming the terminus of the pump chamber 1246 that extends away from the outer wall 1258.

[0091] Optionally, pump housing 1244b can include one or more coupling features, such as a pump plate 1264 and / or one or more fastening brackets. Pump plate 1264 can be formed at a piston end 1268 of pump chamber 1246 or can be slightly recessed from piston end 1268, as shown in FIG. 12B, with such portion of pump extension 1262 extending beyond pump plate 1264. However, in different embodiments, the configuration and orientation of pump plate 1264 can differ.

[0092] The fastening sleeves 1266a, 1266b can be configured to extend parallel to the pump chamber 1246 and the pump extension 1262, such that a fastener that can be used to secure a fitting to the pump extension 1262 can be configured to extend in the same direction as a force generated by the pump assembly 1123 during operation. In one embodiment, the fastening sleeves 1266a, 1266b can define a cavity or recess configured to receive the fastener, although other configurations can be configured differently.

[0093] 15A and 15B , the pump housing 1244 can include one or more fastening supports 1256, such as protrusions or brackets, that can receive one or more fasteners to secure the pump housings 1244 together, e.g., secure the first pump housing 1244a to the second pump housing 1244b. The pump housing 1244b can also include one or more mount supports 1280 for coupling the pump housing 1244b and / or components of the drive assembly 1122 and the pump assembly 1123 to the base 1104. In one example, the mount support 1280 can include a first arm 1282 and a second arm 1284, and the two arms 1282, 1284 can be configured to be received around a mount, e.g., a rubber mount. In one example, the second arm 1284 can include a recess 1286 defined on an upper surface facing toward the first arm 1282. The recess 1286 can be configured to receive a portion of a mount, as discussed in more detail herein. The two arms 1282, 1284 can extend parallel to one another and can extend from the outer wall 1258 of the pump housing 1244b, for example, perpendicularly from a side wall of the pump housing 1244b. In one example, the first arm 1282 can have a smaller width than the second arm 1284, although in other configurations, the arms 1282, 1284 can be configured differently. The pump housing 1244b can include three sets of mount supports 1280, each including two arms: two sets extending from the outer wall 1258 and one set extending from a formed bracket 1288 and extending downward from the upper edge of the pump housing 1244b. The number and configuration of the pump mounts 1280 can vary based on the desired configuration of the pump assembly 1123, drive assembly 1122, and housing supports.

[0094] 16 , one or more bumpers 1374a, 1374b, 1374c can extend upward from the inner surface 1376. The bumpers 1374a, 1374b, 1374c can be shaped as slightly angled or curved walls, such as a U-shape, and can have a lower, e.g., shorter, height than the isolator for the pump assembly 1123, as discussed in more detail below. The bumpers 1374a, 1374b, 1374c can be positioned around, e.g., curved around, the isolator openings 1386a, 1386b, 1386c; in some cases, there can be three isolator openings 1386a, 1386b, 1386c. Similarly, there can be one or more foot openings 1380a, 1380b, 1380c, 1380d configured to receive portions of feet, e.g., rubber feet. The foot openings 1380 a , 1380 b , 1380 c , 1380 d can define a passageway through the lower base 1124 .

[0095] 16 , one or more drain openings 1382a, 1382b, 1382c, 1382d can be defined through the lower housing 1124. The drain openings 1382a, 1382b, 1382c, 1382d are configured to allow fluid to pass through the lower housing 1124 and exit the base section 1105. In one embodiment, each of the drain openings 1382a, 1382b, 1382c, 1382d can be positioned adjacent to a foot mount 1380a, 1380b, 1380c, 1380d or other internal feature formed on the lower housing 1124, and preferably can be positioned such that the drain openings 1382a, 1382b, 1382c, 1382d abut against the periphery of the inner surface 1376 and, optionally, are partially obscured by the foot mount. Positioning the drain openings 1382a, 1382b, 1382c, 1382d in this manner can help reduce noise leakage through the lower housing 1124 because the fastener bosses 1384a, 1384b, 1384c, 1384d act as blocking members, preventing or absorbing sound waves from reaching and exiting the drain openings 1382a, 1382b, 1382c, 1382d. It should be noted that the number and positioning of the drain openings 1382a, 1382b, 1382c, 1382d can be varied as desired, and in some instances, the oral irrigator 1000 can include a single drain opening or can include more than those shown. However, many conventional oral irrigator units may use a single, centrally located drain hole; in such cases, the hole may allow noise to escape from the housing, which is believed to increase the overall noise experienced by the user.

[0096] FIG. 17 shows a partial view of an embodiment of an isolator assembly. The arm 1282 is shown received in the bumper 1428. The isolator can dampen vibrations or noise generated by the pump 1232 and / or drive assembly 1233, thereby making the operation of the oral irrigator 100 quieter than without the isolator assembly. FIG. 17 also shows that the electrical cord 1414 can be coupled to the strain relief 1133 and wrapped around the boss 1384a so that it extends around and underneath the face of the boss 1384a, and then extends to couple to a circuit board and / or motor, e.g., to power the circuit board. In another example, the electrical cord 1414 can be otherwise secured to the boss 1384a, which can function as a cord securement device, e.g., by wrapping around the face of the boss 1384a and then wrapping both ends around and securing them to each other.

[0097] conclusion Any description of a particular component being part of a particular embodiment is for illustrative purposes only and should not be construed as requiring that particular embodiment be used in conjunction with or require other elements as shown in the depicted embodiment.

[0098] All relative and directional references (including top, bottom, side, front, and back, etc.) are provided by way of example to aid the reader in understanding the embodiments described herein. They should not be read as requirements or limitations on a particular location, orientation, or use unless specifically stated in the claims. Connection references (e.g., attached, coupled, connected, and joined, etc.) are to be interpreted broadly and may include intermediate members between the connection of elements and the relative movement between the elements. Thus, connection references do not necessarily imply that two elements are directly connected and in a fixed relationship to each other, unless specifically stated in the claims.

[0099] The present disclosure teaches by way of example and not by way of limitation. Accordingly, everything contained in the above description or shown in the accompanying drawings should be construed in an illustrative and not a limiting sense. The following claims are intended to cover all general and specific features described herein, as well as all statements of the scope of the methods and systems of the present invention that may be found to fall therebetween as a matter of language. [Explanation of symbols]

[0100] 100 Oral Irrigator 106 Tip 110 Housing 112 Pump Assembly 114 Drive Assembly

Claims

1. An oral irrigator, Housing and a drive assembly positioned within the housing; a pump assembly coupled to the drive assembly; an isolator assembly coupled to at least one of the drive assembly or the pump assembly and configured to damp vibrations generated by either or both of the drive assembly or the pump assembly; Including, The isolator assembly includes: a chassis operably coupled to a portion of at least one of the drive assembly or the pump assembly; an engagement arm coupled to the chassis and extending outwardly therefrom; a bumper positioned between the chassis and a portion of the housing, the bumper including a pocket defined therein configured to support the isolator assembly within the housing, the engagement arm engaging an engagement surface of the bumper separate from a pocket surface defining the pocket; Including, Oral irrigator.

2. The oral irrigator of claim 1 , wherein the engagement surface forms an outer surface of the buffer.

3. The oral irrigator of claim 2 , wherein the outer surface is the upper surface of the buffer and is positioned above the pocket surface.

4. The oral irrigator of claim 1 , wherein the engagement arm is coupled to the buffer at a location other than the pocket.

5. the engagement arm includes a first engagement arm and a second engagement arm; the first engagement arm contacts the engagement surface of the shock absorber, and the second engagement arm is positioned adjacent the pocket surface of the shock absorber. The oral irrigator according to claim 1.

6. The oral irrigator of claim 5, wherein the second engagement arm is positioned within the pocket and the engagement surface is positioned above the pocket such that the first engagement arm is positioned above the pocket.

7. the pocket surface includes a first pocket surface, a second pocket surface, and a third pocket surface; the second engagement arm contacts the first pocket surface and the third pocket surface, but does not contact the second pocket surface; The oral irrigator according to claim 5.

8. the engagement surface is positioned above the pocket, the first pocket surface forms an inner surface of the pocket, and the third pocket surface forms a bottom inner surface of the pocket; the second engagement arm is at least partially received within the pocket; The oral irrigator according to claim 5.

9. An oral irrigator as described in any one of claims 1 to 3 or claims 5 to 8, wherein the housing includes a mounting surface, the buffer includes a mounting head received through an opening in the mounting surface, and the buffer supports the chassis above the mounting surface.

10. The oral irrigator according to claim 9 , wherein the chassis does not contact the mounting surface.

11. The oral irrigator of claim 9 , wherein the mounting surface defines a bottom surface of the housing.

12. The chassis includes: a drive shaft of the drive assembly; one or more gears of said drive assembly; a connecting arm of the pump assembly; or Piston of the pump assembly, operably linked to at least one of An oral irrigator according to any one of claims 1 to 3 or claims 5 to 8.

13. An oral irrigator as claimed in any one of claims 1 to 3 or claims 5 to 8, wherein the chassis further defines a gearbox for receiving gearing for the drive assembly.

14. An oral irrigator as described in any one of claims 1 to 3 or claims 5 to 8, further comprising a stop coupled to at least one of the buffer or the engagement arm and configured to limit movement of the engagement arm relative to the buffer in at least one direction.

15. the pocket is a first pocket and the buffer includes a second pocket; the engagement surface is formed on the second pocket, and the engagement arm is at least partially received within the second pocket. An oral irrigator according to any one of claims 1 to 3 or claims 5 to 8.

16. Housing and a vibration-generating component positioned within the housing; a chassis coupled to the vibration-generating component; an engagement arm coupled to the chassis; and a shock absorber positioned between the chassis and the housing, the engagement arm engaging a top surface of the shock absorber and a bottom surface of the shock absorber engaging the housing; an isolator assembly coupled to the vibration-generating component, the isolator assembly including: Oral irrigator including.

17. The oral irrigator of claim 16, wherein the vibration-generating component comprises a portion of a drive assembly or pump assembly for the oral irrigator.

18. the engagement arm includes a first engagement arm and a second engagement arm; the first engagement arm engages with the top surface of the shock absorber, and the second engagement arm engages with another surface of the shock absorber other than the top surface; The oral irrigator of claim 16.

19. 17. The oral irrigator of claim 16, wherein the buffer further includes a pocket defined through a side wall thereof.

20. the engagement arm includes a first engagement arm and the isolator assembly includes a second engagement arm; the second engagement arm is at least partially received within the pocket; The oral irrigator of claim 19.

21. The oral irrigator according to any one of claims 16 to 20, wherein the thickness of the second engagement arm is smaller than the height of the pocket.

22. An oral irrigator as described in any one of claims 16 to 20, wherein at least one of the buffer or the engagement arm includes a stop that limits movement of the engagement arm relative to the buffer in at least one direction.

23. An oral irrigator, A substrate; A chassis, a vibration-generating component supported by the chassis; a damper for isolating the chassis from the substrate to reduce transmission of vibrations from the vibration-generating component to the substrate, the damper including a body and first and second slots defined on a side of the body; Including, a portion of the chassis received in the first slot; the second slot is positioned between the first slot and the substrate to reduce transmission of vibrations to the substrate; Oral irrigator.

24. The oral irrigator of claim 23, wherein the first slot and the second slot form a continuous space on the side of the body of the buffer such that the portion of the chassis occupies the first slot and the second slot is positioned immediately below the portion of the chassis.

25. 24. The oral irrigator of claim 23, wherein the second slot is separated from the first slot by a portion of the body of the bumper.

26. the chassis includes an engagement arm; the portion of the chassis includes a portion of the engagement arm; The oral irrigator of claim 23.

27. 27. The oral irrigator of claim 26, wherein the second slot is separated from the engagement arm by a portion of the body of the bumper.

28. the engagement arms include a first engagement arm; the chassis further includes a second engagement arm; a portion of the body of the shock absorber positioned between the first engagement arm and the second engagement arm; The oral irrigator of claim 26.

29. the first engagement arm is positioned above the portion of the body of the shock absorber; the second engagement arm is positioned in the first slot below the portion of the body of the shock absorber; An oral irrigator according to any one of claims 23 to 28.

Images