Rod assembly and suction cleaner

Abstract

A wand assembly for a suction cleaner having a fluid delivery system and a fluid recovery system is disclosed. A wand body includes a fluid delivery path configured to receive a cleaning liquid via a delivery line and dispense the cleaning liquid through a dispenser outlet. The wand body also includes a fluid recovery path and a fluid port, where the fluid recovery path is configured to divert debris received via a working airflow path, and the fluid port fluidly connects the fluid delivery path and the fluid recovery path. A valve assembly is actuatable between an inactive state in which the valve assembly seals the fluid port and blocks fluid supply from the delivery line, a delivery state in which the valve assembly seals the fluid port and does not block fluid supply from the delivery line, and a cleanup state in which the valve assembly does not seal the fluid port and blocks fluid supply toward the dispenser outlet.

Description

[0001] Citations of relevant applications

[0002] This application claims priority and benefits to U.S. Provisional Application No. 63 / 397,187, filed August 11, 2022, entitled “Suction Cleaner System, Method and Apparatus with Self-Cleaning Hose Feature,” the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This invention generally relates to vacuum-based systems that generate suction to remove mixed debris from surfaces. Specifically, aspects of this disclosure relate to auxiliary hoses for connecting auxiliary tools to a suction cleaner. Background Technology

[0004] A traditional vacuum cleaner is an electro-pneumatic device that generates a pneumatic vacuum for cleaning hard surfaces (such as tile and wood floors) and soft surfaces (such as carpets and upholstery). While traditionally constructed as a "dry" type of cleaning device limited to dirt, dust, and solid debris, some surface cleaning vacuum cleaners are also adapted to function as a "wet" type fluid recovery system, which also extracts stains and other liquids from the surface. Many modern wet suction cleaners (also known as "deep cleaners" or "DC") are also equipped with a liquid delivery system and optionally a liquid recovery and storage system. The delivery system discharges the cleaning solution onto the surface to be cleaned, while the liquid recovery system extracts the used cleaning liquid and debris from the surface and can store the extracted liquid / debris in a recovery tank.

[0005] As part of the liquid delivery system of a deep cleaner, a fluid-sealed supply tank or disposable solution container is included for storing and dispensing a cleaning solution containing ingredients suitable for the application (e.g., water, surfactants, stabilizers, fragrances, foaming agents, and / or detergents). In use, the cleaning solution can be dispensed from the supply tank / container via a fluid supply line extending to a fluid dispenser associated with the foot of the cleaner (vertical deep cleaner), via a hose extending to a fluid dispenser associated with a stick or tool (portable and vertical deep cleaner), or to a fluid dispenser carried by the body of the cleaner (handheld). The solution can be dispensed onto each surface to be cleaned through one or more spray holes associated with an auxiliary tool, the foot of the cleaner, a nozzle head, or through an external nozzle attached to a stick extending between the auxiliary tool and the hose. A pneumatic pressure source located on the deep cleaner generates sufficient suction to remove used solution, soiled liquid, and entrained debris from the surface. Summary of the Invention

[0006] This document discloses a self-cleaning hose (“cleaning”) feature for a vacuum-based cleaning system, a method for manufacturing it, and a method for using the disclosed vacuum system and cleaning feature, as well as a wet suction cleaner equipped with a hose cleaning device. In a non-limiting example, a self-cleaning feature is proposed for an auxiliary hose that fluidly connects an auxiliary tool to the suction cleaner. Over time, the wet suction cleaning process may cause suctioned debris to gradually accumulate within a section of the hose. In some designs, debris accumulation may also occur along a portion of the inner surface of the rod member connecting the auxiliary tool to the auxiliary hose. Depending on its volume and composition, the accumulated debris may emit an undesirable odor. To mitigate any such accumulation, suction cleaners according to aspects of this disclosure employ a hose cleaning system with a manually operated actuator rod that, when activated, displaces a valve plug and simultaneously slides a spring-biased spool valve body to redirect the cleaning solution directly from the liquid delivery system into the fluid recovery path.

[0007] According to one aspect of this disclosure, a rod assembly for a suction cleaner is disclosed, wherein the suction cleaner has a fluid delivery system and a fluid recovery system. The rod includes a fluid delivery path configured to receive cleaning liquid via a delivery line and to distribute cleaning liquid through a dispenser outlet. The rod also includes a fluid recovery path and a fluid port, the fluid recovery path being configured to transfer debris received via a working airflow path, and the fluid port fluidly connecting the fluid delivery path and the recovery path. A valve assembly is actuated between an inactive state and a delivery state and a cleaning state; in the inactive state, the valve assembly seals the fluid port and blocks the fluid supply from the delivery line; in the delivery state, the valve assembly seals the fluid port and does not block the fluid supply from the delivery line; and in the cleaning state, the valve assembly does not seal the fluid port and blocks the fluid supply toward the dispenser outlet.

[0008] According to another aspect of this disclosure, a self-cleaning hose system for a suction cleaner is disclosed, wherein the suction cleaner has a fluid delivery system and a fluid recovery system. The self-cleaning hose system includes a rod having a body comprising a fluid delivery path and a fluid recovery path fluidly connected via a fluid port. The fluid delivery path is configured to receive cleaning liquid, and the fluid recovery path is configured to convey debris received via the rod. A valve assembly is actuated from an inactive state to a first active state and to a second active state. In the inactive state, the valve assembly seals the fluid port and blocks the fluid connection between the fluid delivery path and the fluid delivery system. In the first active state, the valve assembly seals the fluid port and fluidly connects the fluid delivery path to the fluid delivery system. In the second active state, the valve assembly does not seal the fluid port and blocks the fluid connection between the fluid delivery path and the fluid delivery system. An actuator rod is movable between a deactivated position and an activated position. In the deactivated position, the actuator rod disengages from the valve assembly. In the activated position, the actuator rod pushes the valve assembly to the second active state.

[0009] According to another aspect of this disclosure, the suction cleaner includes a cleaner body, a fluid recovery system, and a fluid delivery system. The fluid recovery system includes a suction source configured to generate a fluid pressure vacuum, and the fluid delivery system includes a liquid source configured to contain and dispense cleaning liquid therefrom. A hose is fluidly connected to both the fluid recovery system and the fluid delivery system. A rod assembly is fluidly connected to the hose and includes a rod body comprising a fluid delivery path, a fluid recovery path, and a fluid port fluidly connecting the fluid delivery path and the fluid recovery path. The fluid delivery path is fluidly connected to the fluid delivery system via a delivery line to receive a supply of cleaning liquid therefrom. The fluid recovery path is fluidly connected to the fluid recovery system via a working airflow path to convey debris received via the rod body to the fluid recovery system. A valve assembly is actuable from an inactive state to a delivery state and a cleaning state. In the inactive state, the valve assembly seals the fluid port and blocks the supply of cleaning liquid from the delivery line. In the delivery state, the valve assembly seals the fluid port and does not block the supply of cleaning liquid from the delivery line. In the cleaning state, the valve assembly does not seal the fluid port and blocks the supply of cleaning liquid toward the fluid delivery system. The actuator rod can move between a deactivated position and an activated position. In the deactivated position, the actuator rod is disengaged from the valve assembly, and in the activated position, the actuator rod is engaged with the valve assembly, thereby switching the valve assembly from an inactive state to a clean state.

[0010] Various aspects of this disclosure relate to self-cleaning features for vacuum-based cleaning systems. Various aspects of this disclosure also relate to manufacturing systems, methods, and control logic for manufacturing / using any of the disclosed cleaner systems, devices, features, etc. As used herein, the terms "suction cleaner" and "deep cleaner" (including variations and substitutions thereof) are used interchangeably and synonymously to include any relevant vacuum-based cleaner system, including, as some non-limiting examples, vertical, canister, handheld, and pod-type structures of the wet suction type constructed in wired and wireless configurations. In one example, a rod assembly for a suction cleaner is proposed, the suction cleaner having a fluid delivery system for dispensing cleaning fluid and a fluid recovery system for removing debris. The disclosed rod assembly can be integrally formed as a one-piece structure permanently coupled to an auxiliary tool and / or cleaner hose or selectively detachable from an auxiliary tool and / or cleaner hose.

[0011] In one implementation, the rod assembly includes a rod body comprising a fluid delivery path, a fluid recovery path, and a fluid port selectively connecting the fluid delivery path and the fluid recovery path. The fluid delivery path of the rod is fluidly connected via a first fluid connector to the fluid delivery system of a suction cleaner to receive cleaning fluid therefrom. Similarly, the fluid recovery path of the rod is fluidly connected via a second fluid connector to the fluid recovery system of the suction cleaner to transfer debris received via the rod, for example, from an auxiliary tool, to the fluid recovery system. A valve assembly is carried by or otherwise attached to the rod body to regulate the flow of cleaning fluid through the rod body. The valve assembly is actuated between: (1) an inactive state, wherein the valve assembly seals the fluid port and blocks the first fluid connector; (2) a delivery state, wherein the valve assembly seals the fluid port and does not block the first fluid connector; and (3) a cleaning state, wherein the valve assembly does not seal the fluid port and blocks the first fluid connector. The rod assembly also includes an actuator rod carried by or otherwise attached to the rod body to selectively actuate the valve assembly. The actuator rod can rotate between a deactivated position and an activated position. In the deactivated position, the actuator rod disengages from the valve assembly; in the activated position, the actuator rod engages with the valve assembly and transitions the valve assembly to the cleaning state. In this context, an "integrated" cleaning system can be defined as meaning that the functional cleaning features are carried by the rod assembly.

[0012] Another aspect of this disclosure relates to a cleaning feature for an auxiliary hose of a suction cleaner. In another example, a self-cleaning hose system for a stick of a suction cleaner is proposed. The suction cleaner is equipped with a fluid delivery system for dispensing cleaning fluid and a fluid recovery system for collecting dirt, dust, liquid, and other debris. The stick has a body comprising a fluid delivery path and a fluid recovery path fluidly connected to each other via fluid ports. The fluid delivery path may be fluidly connected to the fluid delivery system, for example, via a flexible fluid delivery conduit, to receive cleaning liquid from it. Similarly, the fluid recovery path may be fluidly connected to the fluid recovery system, for example, via a flexible cleaner hose, to transfer debris received via the stick to the fluid recovery system.

[0013] In some aspects, the cleaning system includes a valve assembly operatively connected to a rod and operable in at least three operating states: (a) an inactive state, wherein the valve assembly seals a fluid port and blocks the fluid connection between the fluid delivery path and the fluid delivery system; (b) a first active state, wherein the valve assembly seals the fluid port and fluidly connects the fluid delivery path to the fluid delivery system; and (c) a second active state, wherein the valve assembly does not seal the fluid port and blocks the fluid connection between the fluid delivery path and the fluid delivery system. An actuator rod is operatively connected to the rod and is rotatable between a deactivated position and an activated position. When in the deactivated position, the actuator rod disengages from the valve assembly, for example, allowing the valve assembly to be actuated in the first active state. When in the activated position, the actuator rod engages the valve assembly and pushes the valve assembly to a second activated state, i.e., initiating the cleaning process.

[0014] In another example, the suction cleaner system includes a cleaner body, a fluid recovery system housed within the cleaner body and including a suction source that generates a fluid pressure vacuum, and a fluid delivery system housed within the cleaner body and including a liquid source containing and dispensing cleaning liquid therefrom. A hose is fluidly connected to both the fluid recovery system and the fluid delivery system. A rod assembly fluidly connected to the hose includes a rod body containing a fluid delivery path, a fluid recovery path, and a fluid port fluidly connecting the fluid delivery path and the fluid recovery path. The fluid delivery path is fluidly connected to the fluid delivery system via a first fluid connector to receive cleaning liquid therefrom. The fluid recovery path is fluidly connected to the fluid recovery system via a second fluid connector to transfer debris received via the rod body to the fluid recovery system. The valve assembly is mounted to the rod and is actuated from an inactive state to a delivery state and a cleaning state. In the inactive state, the valve assembly seals the fluid port and blocks the first fluid connector. In the delivery state, the valve assembly seals the fluid port and does not block the first fluid connector. In the cleaning state, the valve assembly does not seal the fluid port and does not block the first fluid connector. An actuator rod is mounted to the rod and is rotatable between a deactivated position and an activated position. In the deactivated position, the actuator rod disengages from the valve assembly. In the activated position, the actuator rod presses against the valve assembly, thereby transitioning the valve assembly from the inactive state to the cleaning state.

[0015] For any of the disclosed systems, methods, and apparatuses, the actuator rod may include a finger-actuated lever arm located outside the rod body and pivotally mounted to the rod body, for example, via a laterally projecting pivot pin. In this case, the actuator rod may also include a hammer located inside the rod body and fixedly coupled to the lever arm for rotation in unison with the lever arm. The lever arm may be fabricated with an arched (first) sleeve having a semi-circular cross-section and a finger sleeve projecting obliquely from the first sleeve. Similarly, the hammer may be fabricated with an arched (second) sleeve external to the first sleeve and having a semi-circular cross-section, for example, smaller than the semi-circular cross-section of the first sleeve. The hammer head projects axially from the second sleeve, for example, to selectively engage a valve assembly and transition the valve assembly to a cleaning state.

[0016] For any of the disclosed systems, methods, and apparatuses, the rod assembly may further include a rod adjustment (first) biasing member operatively attached to the rod body and biasing the actuator rod to a deactivated position. This biasing member can take many forms, including a torsion spring or leaf spring located between and pressing against the actuator rod and the rod body. Alternatively, a locking block may protrude from the actuator rod (or rod body), and a locking recess may be recessed into the rod body (or actuator rod). When properly engaged, the locking block is positioned within the locking recess, thereby holding the actuator rod in the deactivated position, for example, to help prevent accidental activation of the cleaning features of the rod.

[0017] For any of the disclosed systems, methods, and apparatuses, the valve assembly may include a valve housing mounted to a rod and defining an elongated valve chamber therein, the elongated valve chamber being fluidly connected to a fluid delivery path and a fluid recovery path. The valve body may have the characteristics of a spring-biased multi-platform spool valve body and be movably mounted to the valve housing, and be slidable back and forth between at least a stationary position and a (first) active position. When the valve assembly is stationary, the valve body is in the stationary position and obstructs the first fluid connector, for example, to prevent the dispensing of cleaning fluid through the fluid delivery path of the rod. When the valve assembly is in the delivery state, the valve body is in the first active position and does not obstruct the first fluid connector, for example, to allow the dispensing of cleaning fluid through the fluid delivery path of the rod. In this case, a (second) biasing member, such as a helical compression spring, may be positioned between the valve housing and the valve body to bias the valve body to the stationary position. The valve housing may be designed with a multi-port configuration, having a first valve port fluidly connected to a first fluid connector, a second valve port fluidly connected to a fluid delivery path of the rod, and a third valve port fluidly connected to a fluid recovery path of the rod via the fluid port.

[0018] For any of the disclosed systems, methods, and apparatuses, the valve assembly may include a valve plug movably mounted to the valve body and slidable between a sealed position and a valve plug (second) active position. When the valve assembly is inactive, the valve plug is in the sealed position and seals the fluid port, for example, to deactivate the cleaning feature. When the valve assembly is in the cleaning state, the valve plug is in the second active position and does not seal the fluid port, for example, thereby directly fluidly connecting the fluid delivery path and fluid recovery path of the rod and activating the cleaning feature. The valve assembly may include a valve plug adjustment (third) biasing member between the valve plug and the valve body; this biasing member biases the valve plug to the sealed position to help ensure that the valve plug seals the fluid port.

[0019] For any of the disclosed systems, methods, and apparatuses, a first end of the rod includes a first opening and a first mechanical connector that mates with a tool attachment. A second end of the rod may include a second opening and a second mechanical connector that mates with a cleaner hose of a suction cleaner. Alternatively, the rod may be fixedly attached to or integrally formed with a tool attachment. In this case, the other end of the rod may include a connector that mates with a cleaner hose, thereby attaching the rod to the hose. As yet another option, the rod may be fixedly attached to or integrally formed with a cleaner hose. In this case, the other end of the rod may include a connector that mates with one or more tool attachments, thereby attaching each auxiliary tool to the rod.

[0020] The foregoing summary does not represent every embodiment or aspect of this disclosure. Rather, it provides only examples of some novel concepts and features set forth herein. The foregoing features and advantages, as well as other features and accompanying advantages, will become apparent from the following detailed description of illustrated examples and representative modes for carrying out this disclosure, when taken in conjunction with the accompanying drawings and appended claims. Furthermore, this disclosure expressly includes any and all combinations and sub-combinations of the elements and features set forth above and below. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a representative suction cleaner system based on various aspects of this disclosure;

[0022] Figure 2 This is an enlarged top perspective view of a representative auxiliary rod of an integrated self-cleaning hose (“cleaning”) system according to aspects of this disclosure;

[0023] Figure 3 yes Figure 2 A side-view sectional view of a representative auxiliary rod taken along line 3-3, wherein the front view shows the cleaning actuator rod and fluid delivery trigger in the deactivated position;

[0024] Figure 3 A is a side sectional view according to various aspects of this disclosure, showing a fluid delivery trigger activated to actuate a fluid delivery system;

[0025] Figure 4 Based on all aspects of this disclosure Figure 2 A side-view cross-sectional view of a representative auxiliary rod, now showing the manually operated cleaning actuator rod in the activated position and the integrated cleaning system in the activated cleaning state;

[0026] Figure 5 This is a partially exploded top perspective view of another representative auxiliary rod according to various aspects of this disclosure, the auxiliary rod having an integrated cleaning system having an actuator rod offset rib and a locking feature; and

[0027] Figure 5A This is a side perspective view of the actuator rod biased toward the deactivated position according to various aspects of this disclosure;

[0028] Figure 5B It is a side perspective view of the lever arm according to various aspects of this disclosure;

[0029] Figure 6 Based on all aspects of this disclosure Figure 2 A side perspective perspective of a representative auxiliary rod and integrated cleaning system, wherein an optional helical torsion spring biases the manually operated actuator rod to the disconnected position.

[0030] This disclosure may have various modifications and alternatives, and some representative constructions are illustrated by way of example in the accompanying drawings and will be described in detail below. However, it should be understood that the novel aspects of this disclosure are not limited to the specific forms shown in the drawings listed above. Rather, this disclosure covers all modifications, equivalents, combinations, substitutions, and alternatives that fall within the scope of this disclosure, for example, as covered by the appended claims. Detailed Implementation

[0031] Representative examples of this disclosure are shown in the accompanying drawings and described in detail below. It should be understood that these descriptions are exemplars of the disclosed principles and not limitations on the broad aspects of this disclosure. Therefore, elements and limitations described herein but not expressly set forth in the claims should not be incorporated into the claims, individually or collectively, by implication, inference, or otherwise. Furthermore, the drawings discussed herein may not be to scale and are provided purely for illustrative purposes. Therefore, the specific and relative dimensions shown in the figures should not be construed as limiting.

[0032] Furthermore, unless otherwise stated: the singular includes the plural, and vice versa; the words “and” and “or” should be both connective and disjoint; the words “any” and “all” should mean “any and all”; and the words “including,” “contains,” “covers,” “has,” and their substitutions and similar terms each mean “including but not limited to.” Additionally, approximate words such as “approximately,” “almost,” “basically,” “roughly,” “approximately,” etc., may each be used herein in the sense of, for example, “in, near, or almost in,” or “within 0-5%,” or “within acceptable manufacturing tolerances,” or any logical combination thereof. Finally, directional adjectives and adverbs, such as front, back, left, right, front, back, vertical, horizontal, forward, backward, up, down, etc., may be relative to the suction cleaner device, which is operatively oriented for cleaning horizontal surfaces.

[0033] Referring now to the accompanying drawings, in which the same reference numerals denote the same features in all the views. Figure 1A schematic diagram of a representative suction cleaning system is shown, generally designated 10, and described herein as a wet suction cleaner for the purposes of discussion. The cleaning system 10 shown (also referred to herein as a "suction cleaner" or "deep cleaner") is merely an exemplary application that can practice aspects of this disclosure. Thus, it will be understood that aspects and features of this disclosure can be used in other wet suction cleaner constructions and can be used in any logically related type of deep cleaning system. Furthermore, only selected components of the suction cleaner system and cleaning assembly are shown and described in detail below. However, the system components discussed herein may include numerous additional and alternative features, as well as other available peripheral components, for performing the various methods and functions of this disclosure.

[0034] Figure 1 Various functional subsystems of a surface cleaning tool in the form of a suction cleaner 10 system are illustrated. These functional subsystems can be arranged in any desired configuration, including upright suction devices, canister suction devices, pod suction devices, handheld suction devices, autonomous and robotic cleaning devices, and commercial cleaners. For example, any of the auxiliary rods and cleaning systems described herein, such as those related to... Figures 2 to 6 Those described can be combined with information about Figure 1 Any relevant features of the suction cleaner 10 shown and described, or adapted to include such relevant features, or vice versa. As an example, an auxiliary rod may be adapted to be detachably coupled to, permanently attached to, or integrally formed with one or more attachments, such as auxiliary tools and / or flexible vacuum cleaner hoses, which may form the portion of the working air duct between the nozzle and the suction source in the pulley or carrier base of the upright, canister, handheld, or pod-type suction device.

[0035] Figure 1The suction cleaner 10 can be a two-piece structure with a fluid delivery system 12 and a fluid recovery system 14. The fluid delivery system stores cleaning fluid and selectively distributes the cleaning fluid to the surface to be cleaned, while the fluid recovery system removes used cleaning fluid and debris from the surface to be cleaned and stores the recovered cleaning fluid and debris. In this case, the recovery system 14 shown can consist of an upstream suction nozzle 16, a downstream suction source 18 that generates a vacuum, and an optional waste storage and recovery container 20. The suction source 18 can be in the form of a motorized fan, a volumetric or centrifugal rotary power assembly and is fluidly connected to the suction nozzle 16, generating a working airflow (e.g., configured to generate a fluid pressure vacuum) when needed to draw liquid and debris into the recovery system 14. The recovery container 20, located between the suction nozzle 16 and the suction source 18, separates the liquid and debris from the working airflow and collects the liquid and debris for subsequent processing. A separator 21 can be encapsulated within a portion of the recovery container 20 for separating liquid and entrained debris from the working airflow.

[0036] Continue the discussion Figure 1 A representative suction cleaner system 10 includes a suction source 18, which can be any suitable electromechanical device that generates a vacuum, electrically connected to or potentially connected to a power source 22, such as a rechargeable battery or electrical outlet. A power switch 24, located between the suction source 18 and the power source 22, can be selectively actuated by the user to enable the suction source 18. A nozzle 16, which sucks up dirt, debris, used cleaning solution, etc., can be integrated into a base, tool, or cleaning head and can be adapted to move over the surface to be cleaned. An optional agitator 26 can be located near the nozzle 16 to agitate the surface to be cleaned, breaking down debris and making it easier to be drawn into the nozzle 16. Some non-limiting examples of agitators include horizontally oriented rotating brush rollers, vertically oriented rotating brush rollers, fixed brushes, flexible protrusion arrays, etc.

[0037] The suction cleaner 10 can be operationally connected to any kind of interchangeable attachments and tools to facilitate different cleaning tasks. For example, in Figure 1 In this system, the auxiliary hose 28 can selectively fluidly connect the suction source 18 to an auxiliary tool or cleaning accessory 30 with a separate suction inlet, such as an extension bar, decorative tool, dust brush, etc. In some embodiments, a diversion valve assembly 32 or other diversion mechanism may be provided to selectively redirect fluid communication from the suction source 18 back to the nozzle 16 or the auxiliary hose 28. The auxiliary hose 28 may also employ a fluid distributor that fluidly connects the fluid delivery system 12 to the tool / accessory 30 to selectively discharge cleaning fluid from it.

[0038] The fluid delivery system 12 of the suction cleaner may consist of a liquid source (e.g., a refillable or interchangeable fluid container 34) located upstream of the system 12, a liquid distribution fluid dispenser 38 located downstream of the system 12, and a liquid flow regulation flow control system 36 situated between the container 34 and the dispenser 38. The fluid container 34 stores or contains a supply of cleaning fluid and selectively distributes the cleaning fluid supply from it. The cleaning fluid may include one or more of any suitable cleaning fluids, such as water, synthetics, concentrated detergents, diluted detergents, and mixtures thereof. The flow control system 36 manages the delivery of the cleaning fluid from the container 34 to the dispenser 38. In the illustrated configuration, the flow control system 36 uses a unidirectional liquid pump 40 to pressurize the system 12 and uses one or more flow control valves 42 to control the delivery of the cleaning fluid to the dispenser 38.

[0039] Still referencing Figure 1 An actuator 44, which can be in the form of a manually operated trigger or lever, can be provided to enable the flow control system 36 and distribute fluid to and through a distributor 38. For normally closed valve assemblies, the actuator 44 can be operatively coupled to a valve 42 such that pressing the actuator 44 will open the valve 42. The valve 42 can be an electrically actuated valve device such that when the actuator 44 is pressed, an electrical switch 46 located between the valve 42 and the power source 22 selectively closes, thereby powering the valve 42 to move to the open position. While any kind of different flow control device can be employed, it may be desirable to... Figure 1 Valve 42 is either a solenoid valve or a manual slide valve. Liquid pump 40 may also be electrically connected to and powered by power source 22. Depending on the configuration shown, pump 40 may be a centrifugal pump or a solenoid pump. It is also conceivable that pump 40 can be removed from system 12, and that flow control system 36 may be a gravity supply system if desired. For example, one or more mechanically or electrically actuated valves may be fluidly connected to the outlet ports of containers 34, 52; when open, the valves may allow fluid to flow to distributor 38 under gravity.

[0040] Continue to refer to Figure 1 The fluid dispenser 38 may include one or more dispenser outlets 48 for spraying cleaning fluid onto the surface to be cleaned. The dispenser outlets 48 may be enclosed within the suction cleaner 10 system to deliver fluid directly to the surface, or indirectly by delivering fluid to or through the agitator 26. The dispenser outlets 48 may take any suitable configuration, such as a nozzle or tip, or a distributed arrangement of the dispenser outlets 48. Figure 1 As shown, for example, dispenser outlet 48 includes multiple nozzles for dispensing cleaning fluid onto the surface. If desired, cleaning tool 30 may optionally include an auxiliary dispenser outlet (not shown) coupled to fluid delivery system 12. Although Figure 1 This can be considered a schematic diagram of an upright deep cleaner (UDC), but the selected features in this diagram can be adapted to be incorporated into other suction cleaner constructions, including handheld and pod-type portable deep cleaners (PDC).

[0041] An optional fluid heater device 50 may be fluidly positioned between the fluid container 34 and the fluid distributor 38 to selectively heat the cleaning fluid before the liquid pump 40 delivers the cleaning fluid to the surface through the distributor outlet 48. Figure 1 In the example shown, the in-line electric heater 50 is located downstream of the fluid container 34 and upstream of the pump 40. In yet another example, the cleaning fluid can be heated using exhaust gas from the motor cooling exhaust path used for the suction source 18.

[0042] Figure 1 The fluid delivery system 12 can use single or multiple containers to store and dispense cleaning fluids or premixed components of cleaning fluid mixtures. For example, a first fluid container 34 can store water, and a second fluid container 52 can store cleaning detergents or additives. By way of example and not limitation, the two containers 34, 52 can be defined by a supply tank and a collapsible bladder. In one configuration, the fluid container 34 can be a bladder stored within a recovery container 20. Alternatively, a single fluid container can be constructed with multiple chambers for storing various different liquids. The cleaning fluid in any of the containers 34, 52 can be, but is not limited to, water or a mixture comprising water and one or more treatment agents. These treatment agents can be, but are not limited to, detergents, odor eliminators, disinfectants, stain removers, odor removers, deodorants, fragrances, or any combination thereof.

[0043] For fluid delivery system structures using multiple containers 34, 52, the flow control system 36 can be equipped with a mixing system 54 operable to control the composition of the cleaning fluid delivered to the surface via the distributor 38. The cleaning fluid composition can be determined by the controlled ratio of the cleaning fluids mixed together by the mixing system. Figure 1 As shown, a typical example of the mixing system 54 is the mixing manifold 56, which selectively receives fluid from one or both of the fluid containers 34 and 52. A mixing valve 58 is fluidly connected to the outlet port of the second container 52; when the mixing valve 58 is open, the clean fluid component from the second container 52 flows into the mixing manifold 56. The composition of the clean fluid delivered to the surface can be selected by controlling the valve flow characteristics (timing, frequency, and length) of the mixing valve 58.

[0044] During operation, Figure 1The suction cleaner 10 is prepared for use by filling one or both fluid containers 34, 52 with cleaning fluid or cleaning fluid components, and then electrically connecting the suction cleaner 10 to the power source 22. Metered cleaning fluid can be selectively delivered to selected surfaces to be cleaned via the fluid delivery system 12 by user activation of the actuator 44. If needed, the suction cleaner 10 can move back and forth on the selected surface simultaneously. The agitator 26 can simultaneously agitate the cleaning fluid as it enters the selected surface. During operation of the fluid recovery system 14, the suction cleaner 10 draws in working fluid and debris-laden working air through the nozzle 16 or cleaning tool 30, depending on the position of the deflector assembly 32. The working air is drawn into the downstream recovery container 20, where the liquid and debris are substantially separated from the working air. The airflow then passes through the suction source 18 before exiting from the suction cleaner 10. The recovery container 20 can be periodically emptied of the collected fluid, dirt, and other debris. Further details of the suction cleaner, including its constituent parts, structure, and use, are disclosed in U.S. Patents 7,784,148, 9,560,948, 10,188,252, 10,588,476, and 10,624,515, the full contents of which are incorporated herein by reference for all purposes.

[0045] Next, turn to Figures 2 to 4 This illustrates a representative example of a self-cleaning feature for system integration in a suction cleaning system. Figure 2 An exemplary auxiliary rod 100 assembly with an integrated hose cleaning system 110 is shown, which can be used with a wet vertical suction cleaner (e.g. Figure 1 Used together with the suction cleaner 10). As mentioned above, it can be envisioned that... Figures 2 to 4 The auxiliary stick 100 and the cleaning system 110 can be combined with the information in this article. Figure 1 , Figure 4 and Figure 6 Any choice and alternative to the auxiliary rods and related feature descriptions, and vice versa. As a similar non-limiting point, Figures 2 to 6 All auxiliary rods 100, 200 and 300 can be manufactured as handheld devices manufactured together with rod body 102. Figure 2 and Figure 3 The illustrated rod 102 has a distal (first) rod end 101 and a proximal (second) rod end 105. The distal (first) rod end has a distal (first) rod opening 103, and the proximal (second) rod end has a proximal (second) rod opening 107. An internal working airflow path 109 is defined within the auxiliary rod 100. Figure 3 ), which extends the length of the rod body 102 and fluidly interconnects the rod openings 103, 107 with the auxiliary hose (in Figure 2(As shown in 104, which is not easily noticeable) fluid interconnection. In this context, a “one-piece” cleaning system can be defined as meaning that the functional cleaning features are carried by bar components.

[0046] The proximal (first) connector mechanism 106 is located at the distal end 101 of the rod body 102, and this proximal (first) connector mechanism is... Figure 2 The latching arm, denoted as a complementary coupling mechanism that mates with one or more interchangeable auxiliary tools, allows for the removable installation of tools one at a time onto the auxiliary rod 100. Alternatively, the distal end 101 of the rod body 102 may be permanently attached to or integrally formed with the auxiliary tool. A proximal (second) coupling mechanism 108 is located at the proximal end 105 of the rod body 102, which... Figure 2 The term "clamp" refers to a snap-lock locking sleeve that mates with the complementary connector mechanism of the auxiliary hose 104 to removably connect the rod 100 to the hose 104. Alternatively, the proximal end 105 of the rod body 102 may be permanently attached to or integrally formed with the auxiliary hose or other fluid conduit. With this arrangement, Figure 2 The user of the auxiliary rod 100 assembly can selectively connect an auxiliary tool (e.g., auxiliary tool 30) to the cleaning system via the auxiliary hose 104 using the rod body 102, which serves as an intermediate fluid connector. Figure 1 The fluid delivery system 12 and the fluid suction system 14, the intermediate fluid connector can be used as a handle.

[0047] refer to Figure 3 and Figure 4 A cross-sectional view of the rod 102, wherein the rod 102 contains, carries, or defines (collectively, “includes”) a fluid delivery path 112 for receiving liquid cleaning fluid (fluid flow arrow F) from the fluid delivery system of the suction cleaner. CL ), and will clean the fluid F CL Transmitted via the auxiliary rod 100 to the cooperating or otherwise connected auxiliary tool 30 ( Figure 1 ).exist Figure 3 In this process, the fluid delivery path 112 can be at least partially represented by an S-shaped barb fitting 114 having an integral barb-shaped outlet tip 113, which fluidly connects to a mating adapter of the nozzle (e.g., dispenser outlet 48) of the auxiliary tool 30. Protruding from the other side of the barb fitting 114 is an integral barb-shaped inlet tip 115, which presses into a manually operated valve assembly 118 and is fluidly connected to the valve assembly via a flexible delivery line 116. The valve assembly 118 is then connected within an auxiliary hose 104 to the fluid delivery system of the suction cleaner (e.g., [missing information]). Figure 1 Fluid transport system 12).

[0048] The rod body 102 also includes a fluid recovery path 122 for receiving a working airflow (fluid flow arrow F) containing used cleaning liquid, dirt, and other entrained debris from the auxiliary tool 30. WA ), and the working airflow F WA The fluid is delivered to the suction cleaner's fluid recovery system via the auxiliary rod 100 (e.g., Figure 1 Fluid recovery system 14). In Figure 3 In this configuration, the fluid recovery path 122 can be at least partially represented by the working airflow path 109, which fluidly connects the distal rod opening 103 to the auxiliary hose 104 via the proximal rod opening 107. The portion extending through the outer wall of the rod body 102 is defined by... Figure 3 Fluid port 111 in A allows fluid delivery path 112 to be directly fluidly connected to fluid recovery path 122 via manual activation of valve assembly 118 to achieve the “hose 104 cleaning” feature, as will be described in further detail below.

[0049] like Figure 3 and Figure 4 As shown, the three-port steering T-valve assembly 118 is mounted to or otherwise carried by the rod body 102, and the valve assembly can be manually operated to selectively guide the liquid cleaning solution F. CL The cleaning solution F is delivered via fluid transport path 112, and selectively when needed. CL The circuit then redirects to fluid recovery path 122. As a non-limiting example, Figures 2 to 4 The valve assembly 118 can be actuated between at least three different operating states: (1) inactive state ( Figure 3 An example of this is shown in the figure), wherein the valve assembly 118 simultaneously blocks / seals the fluid port 111 and blocks / seals the fluid connection between the barbed fitting 114 and the flexible delivery line 120, thereby blocking the fluid supply from the delivery line 120; (2) Delivery state ( Figure 3 A), wherein valve assembly 118 blocks / seals fluid port 111 while not blocking / sealing the fluid connection between barbed fitting 114 and flexible delivery line 120, thus allowing fluid to be supplied from delivery line 120 to barbed fitting 114; and (3) clean state ( Figure 4The valve assembly 118 does not obstruct / seal the fluid port 111, and obstructs / seals the fluid connection between the barbed fitting 114 and the flexible delivery line 120. For at least some applications, the auxiliary rod 100 may be characterized by a single valve assembly 118 operable to regulate the distribution of cleaning solution through the fluid delivery path 112 to the selected surface during surface cleaning operations, and to redirect the cleaning solution directly from the fluid delivery system of the suction cleaner to the working airflow path 109 during hose cleaning operations.

[0050] The cleaning liquid F passing through the auxiliary rod 100 assembly can be controlled by any suitable valve structure. CL Fluid flow control, including mechanical, electromechanical, magnetic, pneumatic, and hydraulic design. Based on the illustrated structure, Figure 3 The valve assembly 118 is a manually activated mechanical design, comprising a multi-port valve housing 124 with an internal valve chamber 121 fluidly connected to both the fluid delivery path 112 and the fluid recovery path 122. The valve housing 124 is shown with at least three valve ports for fluidly connecting the valve assembly 118 to the working airflow path 109, the barbed fitting 114, and the cleaning fluid delivery line 120. A barbed valve inlet tip 123 (representing the "first valve port") is integrally formed with and protrudes from the proximal side of the valve housing 124, press-fitting into and fluidly connected to the flexible delivery line 120, and thus fluidly connected to the fluid delivery system of the suction cleaner. A barbed valve outlet tip 125 (representing the "second valve port") is integrally formed with and protrudes from the distal side of the valve housing 124 opposite to the valve inlet tip 123. The valve outlet tip 123 is press-fitted into and fluidly connected to the flexible delivery line 116, and thus fluidly connected to the barbed fitting 114. Extending through the top of the valve housing 124 is a cleaning gate 127 (representing the "third valve port"), which is fluidly connected to the fluid port 111 via an annular cap 126, and thus connected to the fluid recovery path 122. A first polymer O-ring 128 ( Figure 3 A) An annular sealing seat nested within the annular cover 126, and fluidly sealing the valve housing 124 and cover 126 to the rod body 102 and port 111.

[0051] Fluid movement through valve assembly 118 can be achieved using any suitable flow control hardware, including lift valves, ball valves, needle valves, diaphragm valves, and plug valve designs. According to the illustrated structure, Figure 3The valve assembly 118 is a combination of a lift valve and a spool valve, utilizing a spring-biased multi-platform spool valve body 130 and a spring-biased cap-shaped valve plug 132, both of which are movably mounted to the valve housing 124. The spool valve body 130 may be a one-piece construction with an elongated cylindrical base structure having a pair of longitudinally spaced platforms 131 and 133, which are disposed within the internal valve chamber 121 and connected by a reduced-diameter handle 135. Figure 4 ). Second polymer O-ring 136 ( Figure 3 It is nested within the annular sealing seat of the first platform 131 and fluidly seals the spool valve body 130 to the valve housing 124.

[0052] Figure 3 and Figure 4 The valve assembly 118 shown can be a normally closed valve design, which blocks fluid flow through the assembly 118 until it is activated by the user. When the valve assembly 118 is deactivated and therefore in a liquid-blocking inactive state ( Figure 3 The second platform 133 of the spool valve body 130 is sealed against the valve seat 137 within the valve housing 124. In this way, the valve body 130 prevents fluid from flowing from the fluid delivery system via the flexible delivery line 120 through the valve assembly 118 and via the flexible delivery line 116 to the barbed fitting 114. When the user of the auxiliary rod 100 manually presses the finger-activated injection trigger 134, the user simultaneously moves the spool valve body 130 from its inactive closed position (e.g., in...). Figure 3 Push vertically upwards to the fluid distribution (first) active position. Figure 3 A). This places valve assembly 118 in a clean liquid delivery state. By sliding the spool valve body 130 to its active position, the second platform 133 moves away from the valve seat 137 (e.g., in...). Figure 4 The platform 133 is shifted vertically upwards, without obstructing the fluid connection between the fluid delivery system and the fluid delivery path 112. In effect, the platform 133 is moved away from the valve seat 137 so that the valve assembly 118 fluidly connects the delivery line 120 to the conveying line 116. A spool valve biasing member, such as a helical compression spring 138, is located between the outer flange of the valve housing 124 and the first platform 131 of the spool valve body 130; the spring 138 biases the valve body 130 (e.g., in...). Figure 3 (Vertically downwards) to the inactive position.

[0053] When valve assembly 118 is deactivated and therefore in a liquid-blocked inactive state ( Figure 3 An example is shown in the figure), the disc-shaped contact 141 of the valve plug 132 engages or seals against the plug seat 139 of the annular cover 126. Figure 3A). By placing the valve plug 132 in this sealed position, the contact head 141 seals the fluid port 111, thereby blocking direct fluid flow from the fluid delivery system through the flexible delivery line 120, through the valve assembly 118, and through the recovery path 122 to the fluid recovery system. When the user manually moves (e.g., rotates) or actuates the cleaning actuator rod 140 of the auxiliary rod 100, the user thereby places the valve plug 132 (e.g., in the sealed position). Figure 3 Press vertically downwards from the sealing position to the cleaning actuation (second) active position (in the middle). Figure 4 (An example of this is shown). This places valve assembly 118 in a hose and rod cleaning state. By sliding valve plug 132 to its active position, contact head 141 moves away from plug seat 139 (e.g., in...). Figure 3 The valve body 112 is vertically downwards and does not obstruct the fluid port 111. In effect, the contact head 141 is removed from the plug seat 139, allowing the valve assembly 118 to directly fluidly connect the delivery line 120 to the working airflow path 109. A plug biasing member, such as a helical compression spring 160, is positioned between the second platform 133 of the spool valve body 130 and the bottom surface of the contact head 141 of the valve plug 132; this spring 138 biases the valve plug 132 to a sealing position.

[0054] In the above description, a user-activated spray trigger 134, located on the bottom side of the rod 102, can be pressed to activate the auxiliary rod's cleaning liquid delivery state, while a user-activated actuator lever 140, located on the top side of the rod 102, can be moved, for example, rotated, to activate the auxiliary rod's self-cleaning state. An added benefit of having two separate actuators activated in two physically different ways is that the spray trigger 134 can be actuated by a finger with a squeezing or pressing force, while the cleaning actuator lever 140 can be actuated by a different rotational or pulling force. Compared to systems that actuate the solution spray and cleaning features by squeezing / pressing a button or trigger (e.g., activating the actuators in the same physical way), the use of two different actuators with two different activation forces reduces user confusion and minimizes accidental actuation of one feature when another feature is needed. Furthermore, by positioning each actuator in a different location (e.g., actuator rod 140 is located on the top side of rod 102 and injection trigger 134 is located on the bottom side of body 102), single-handed use is permitted, whereby the user's fingers can be used to actuate injection trigger 134 and the user's thumb can be used to actuate cleaning features (e.g., via rod 140).

[0055] like Figure 3 and Figure 4As shown, the cleaning actuator rod 140 is movably mounted to the rod body 102, for example, via a pair of pivot pins 155, which project radially inward from the actuator rod 140 and extend through complementary through-holes 143 in the rod body 102. Figure 5 After proper installation, cleaning the actuator rod 140 allows it to be removed from the deactivated position. Figure 3 Manually rotate (e.g., in) Figure 2 (clockwise) to the enabled position ( Figure 4 When in the deactivated position, actuator rod 140 can disengage from valve assembly 118, allowing valve plug 132 to be pushed to the sealing position via plug bias compression spring 160. By rotating actuator rod 140 to the activated position, valve plug 132 is pushed to its active position, thereby transitioning valve assembly 118 to the clean state as described above.

[0056] The actuator lever 140 can be a two-piece structure comprising: a user-actuated lever arm 144, which can be located outside the rod body 102 and pivotally mounted to the outer surface of the rod body; and a plug-press hammer 146, located inside the rod body 102 and rotatable within the working airflow path 109. A radially projecting pivot pin 155 of the lever arm 144 is received in a complementary pin groove 145 in the hammer 146, thereby securing the hammer 146 to the lever arm 144 for synchronized rotation. It is desirable that when the actuator lever 140 is deactivated, the externally mounted lever arm 144 rests substantially flush with the outer surface of the rod body 102, for example, to prevent accidental tripping over random objects. Simultaneously, when the actuator lever 140 is deactivated, the internally mounted hammer 146 rests substantially flush with the inner surface of the rod body 102, for example, to avoid obstructing the working airflow F. WA The movement is achieved through the working airflow path 109.

[0057] As in Figure 5 As seen in the partially exploded view, another exemplary auxiliary rod 200 assembly according to various aspects of this disclosure is shown. The auxiliary rod 200 assembly is similar to the auxiliary rod 100 assembly. Therefore, unless otherwise specifically stated, parts identified by the same reference numerals represent the same parts. In the auxiliary rod 200 assembly, the lever arm 244 (which is structurally substantially similar to...) Figures 2 to 4The lever arm 144 can be manufactured as a one-piece structure with an arched (first) sleeve 147 having a semi-circular cross-section. As shown, the finger sleeve 149 is integrally formed with the arched sleeve 147 and protrudes from the central region of the sleeve 147 at an angle (e.g., approximately 15 to 20 degrees). Similarly, the hammer 146 can be manufactured as a one-piece structure with an arched (second) sleeve 151 nested within and externally connected to the arched sleeve 147 of the lever arms 144, 144 / 244. In some aspects, the sleeve 151 of the hammer has a corresponding semi-circular cross-section smaller than that of the lever arm. The hammer head 153 can be integrally formed with the arched sleeve 151 and can protrude axially from the central region of the sleeve 151.

[0058] The auxiliary rod 200 assembly can be incorporated into one or more biasing members that individually or collectively bias the cleaning actuator rod to a deactivated position, for example, to help ensure that the self-cleaning operation is not accidentally triggered. For example, in Figure 5B In this configuration, a pair of resilient leaf springs 255 protrude radially inward and axially rearward from the inner surface of the clamp 147 portion of the lever arm. These leaf springs 255 can be integrally formed with the lever arm 144 / 244 located between the actuator rod 140 and the rod body 102. Each leaf spring 255 presses against a corresponding retaining rib 257 that protrudes radially outward from the outer surface of the rod body 102. Figure 5A This will offset the actuator rod 140 toward the deactivated position. An alternative construction could be to attach or integrally form the leaf spring 255 to the rod body 102 and to attach or integrally form the retaining rib 257 to the actuator rod 140.

[0059] like Figure 5 As shown, a pair of hemispherical locking blocks 259 can protrude inward from opposite sides of the actuator rod's sleeve 147 (or radially outward from opposite sides of the rod body 102). Engaging with the locking blocks 259 are a pair of complementary locking recesses 261, recessed into opposite sides of the rod body 102 (or into opposite sides of the actuator rod sleeve 147). When the rod arm 144 is pressed upward against the rod body 102, each locking recess 261 aligns with and is positioned within the corresponding locking block 259. Engaging the locking blocks 259 with the locking recesses 261 helps to hold the actuator rod 140 in the deactivated position.

[0060] Figure 6Another exemplary auxiliary rod 300 assembly according to various aspects of this disclosure is shown. The auxiliary rod 300 assembly is similar to auxiliary rod assemblies 100 and 200. Therefore, unless otherwise specifically stated, parts identified by the same reference numerals represent the same parts. The main difference in the auxiliary rod 300 assembly is that the biasing member of the cleaning system 310 includes one or more torsion springs 363, which are located between the actuator lever arm 344 and the rod body 102 and press against the actuator lever arm 344 and the rod body 102 to bias the actuator rod 340 to a deactivated position.

[0061] Additional features may be reflected in the following clauses:

[0062] Clause 1: A rod assembly for a suction cleaner having a fluid delivery system and a fluid recovery system, the rod assembly comprising: a rod body including a fluid delivery path, a fluid recovery path, and a fluid port connecting the fluid delivery path and the fluid recovery path, the fluid delivery path being configured to be connected to the fluid delivery system via a first fluid connector and to receive cleaning fluid from the fluid delivery system, the fluid recovery path being configured to be connected to the fluid recovery system via a second fluid connector and to transfer debris received via the rod body to the fluid recovery system; a valve assembly carried by or otherwise attached to the rod body and actuated from an inactive state to a delivery state and a cleaning state, wherein in the inactive state, the valve assembly seals the fluid port and blocks the first fluid connector, in the delivery state, the valve assembly seals the fluid port and does not block the first fluid connector, and in the cleaning state, the valve assembly does not seal the fluid port and blocks the first fluid connector; and an actuator rod attached to the rod body and rotatable between a deactivated position and an activated position, wherein in the deactivated position, the actuator rod disengages from the valve assembly, and in the activated position, the actuator rod switches the valve assembly to the cleaning state.

[0063] Clause 2: The rod assembly according to Clause 1, wherein the actuator rod includes a finger-actuated lever arm located outside the rod body and pivotally mounted to the rod body.

[0064] Clause 3: The rod assembly according to Clause 2, wherein the actuator rod further includes a hammer located inside the rod body and fixedly coupled to the rod arm to rotate in unison with the rod arm.

[0065] Clause 4: The bar assembly according to Clause 2 or Clause 3, wherein the bar arm includes a first sleeve having a first semi-circular cross section and a finger sleeve projecting obliquely from the first sleeve.

[0066] Clause 5: The bar assembly according to Clause 4, wherein the bar hammer includes a second sleeve externally connected to a first sleeve and having a second semi-circular cross-section, and a hammerhead projecting axially from the second sleeve.

[0067] Clause 6: The rod assembly according to any one of Clauses 1 to 5 further includes a first biasing member attached to the rod body and biasing the actuator rod to a deactivated position.

[0068] Clause 7: The rod assembly as described in Clause 6, wherein the biasing member comprises a torsion spring or leaf spring between the actuator rod and the rod body.

[0069] Clause 8: The rod assembly according to any one of Clauses 1 to 7 further includes a locking block protruding from one of the actuator rod and the rod body, and a locking recess recessed into the other of the actuator rod and the rod body, the locking recess housing the locking block therein to hold the actuator rod in the deactivated position.

[0070] Clause 9: A rod assembly according to any one of Clauses 1 to 8, wherein the valve assembly comprises: a valve housing mounted to the rod and defining a valve chamber therein, the valve chamber being fluidly connected to a fluid delivery path and a fluid recovery path; and a valve body movably mounted to the valve housing and slidable from an inactive position to a first active position, in which the valve body obstructs a first fluid connector when the valve assembly is inactive, and in the first active position, when the valve assembly is in a delivery state, the valve body does not obstruct the first fluid connector.

[0071] Clause 10: The rod assembly according to Clause 9, wherein the valve assembly further includes a second biasing member located between the valve housing and the valve body and biasing the valve body to an inactive position.

[0072] Clause 11: The rod assembly according to Clause 9 or Clause 10, wherein the valve assembly further includes a valve plug movably mounted to the valve housing and slidable from a sealed position to a second active position, wherein in the sealed position, when the valve assembly is inactive, the valve plug seals the fluid port, and in the second active position, when the valve assembly is in a cleaned state, the valve plug does not seal the fluid port.

[0073] Clause 12: The rod assembly according to Clause 11, wherein the valve assembly further includes a third biasing member located between the valve plug and the valve body and biasing the valve plug to a sealing position, in which the valve plug seals the fluid port.

[0074] Clause 13: The rod assembly according to any one of Clauses 9 to 12, wherein the valve housing includes: a first valve port fluidly connected to a first fluid connector; a second valve port fluidly connected to a fluid delivery path; and a third valve port fluidly connected via a fluid port to a fluid recovery path.

[0075] Clause 14: A rod assembly according to any one of Clauses 1 to 13, wherein a first end of the rod body includes a first opening and a first connector configured to mate with a tool accessory, and a second end of the rod body includes a second opening and a second connector configured to mate with a hose.

[0076] Clause 15: A self-cleaning hose (cleaning) system for a stick of a suction cleaner, the suction cleaner having a fluid delivery system and a fluid recovery system, the stick having a stick body including a fluid delivery path and a fluid recovery path connected via fluid ports, the fluid delivery path being fluidly connected to the fluid delivery system to receive cleaning liquid from the fluid delivery system, and the fluid recovery path being fluidly connected to the fluid recovery system to transfer debris received via the stick to the fluid recovery system, the cleaning system including: a valve assembly configured to be mounted to the stick body and inactive in a first active state and a second active state. The actuator, in an inactive state, seals the fluid port and blocks the fluid connection between the fluid delivery path and the fluid delivery system; in a first active state, the valve assembly seals the fluid port and fluidly connects the fluid delivery path to the fluid delivery system; in a second active state, the valve assembly does not seal the fluid port and blocks the fluid connection between the fluid delivery path and the fluid delivery system; and an actuator rod, configured to be mounted to a rod body and rotate between a deactivated position and an activated position, in the deactivated position, the actuator rod disengaging from the valve assembly; and in the activated position, the actuator rod pushing the valve assembly to the second active state.

[0077] Clause 16: A suction cleaner comprising: a cleaner body; a fluid recovery system attached to the cleaner body and including a suction source configured to generate a fluid pressure vacuum; a fluid delivery system attached to the cleaner body and including a liquid source configured to contain and dispense cleaning liquid from the liquid source; a hose fluidly connected to both the fluid recovery system and the fluid delivery system; and a rod assembly fluidly connected to the hose, the rod assembly including: a rod body including a fluid delivery path, a fluid recovery path, and a fluid port fluidly connecting the fluid delivery path and the fluid recovery path, the fluid delivery path being fluidly connected to the fluid delivery system via a first fluid connector to receive cleaning liquid from the fluid delivery system, and the fluid recovery... The path is fluidly connected to the fluid recovery system via a second fluid connector to transfer debris received via the rod to the fluid recovery system; a valve assembly, attached to the rod and actuated from an inactive state to a conveying state and a cleaning state, wherein in the inactive state, the valve assembly seals the fluid port and blocks the first fluid connector; in the conveying state, the valve assembly seals the fluid port and does not block the first fluid connector; and in the cleaning state, the valve assembly does not seal the fluid port and blocks the first fluid connector; and an actuator rod, attached to the rod and rotatable between a deactivated position and an activated position, wherein in the deactivated position, the actuator rod is disengaged from the valve assembly; and in the activated position, the actuator rod presses against the valve assembly and thereby transitions the valve assembly from the inactive state to the cleaning state.

[0078] Clause 17: The suction cleaner as described in Clause 16, wherein the actuator rod includes a finger-actuated lever arm located outside the rod body and pivotally mounted to the rod body.

[0079] Clause 18: The suction cleaner as described in Clause 17, wherein the actuator rod further includes a hammer located inside the rod body and fixedly connected to the rod arm to rotate in unison with the rod arm.

[0080] Clause 19: The suction cleaner as described in Clause 18, wherein the lever arm includes a first sleeve having a first semi-circular cross-section and a finger sleeve projecting obliquely from the first sleeve.

[0081] Clause 20: The suction cleaner as described in Clause 19, wherein the hammer comprises a second sleeve externally connected to a first sleeve and having a second semi-circular cross-section, and a hammerhead projecting axially from the second sleeve.

[0082] Clause 21: The suction cleaner according to any one of Clauses 17 to 20 further includes a first biasing member attached to the rod and biasing the actuator rod to a deactivated position.

[0083] Clause 22: The suction cleaner according to any one of Clauses 17 to 21 further includes a locking block protruding from one of the actuator rod and the rod body and a locking recess recessed into the other of the actuator rod and the rod body, wherein the locking block is placed in the locking recess to hold the actuator rod in the deactivated position.

[0084] Clause 23: A suction cleaner according to any one of Clauses 17 to 22, wherein the valve assembly comprises: a valve housing mounted to the rod and defining a valve chamber therein, the valve chamber being fluidly connected to a fluid delivery path and a fluid recovery path; and a valve body movably mounted to the valve housing and slidable from an inactive position to a first active position, in which the valve body blocks a first fluid connector when the valve assembly is inactive, and in the first active position, when the valve assembly is in a delivery state, the valve body does not block the first fluid connector.

[0085] Clause 24: The suction cleaner according to Clause 23, wherein the valve assembly further includes a second biasing member located between the valve housing and the valve body and biasing the valve body to an inactive position.

[0086] Clause 25: A suction cleaner according to Clause 23 or Clause 24, wherein the valve assembly further includes a valve plug movably mounted to the valve housing and slidable from a sealed position to a second active position, wherein in the sealed position, when the valve assembly is inactive, the valve plug seals the fluid port, and in the second active position, when the valve assembly is in a cleaning state, the valve plug does not seal the fluid port.

[0087] Clause 26: The suction cleaner according to Clause 25, wherein the valve assembly further includes a third biasing member located between the valve plug and the valve body and biasing the valve plug to a sealing position, in which the valve plug seals the fluid port.

[0088] Clause 27: A suction cleaner according to any one of Clauses 23 to 26, wherein the valve housing includes: a first valve port fluidly connected to a first fluid connector; a second valve port fluidly connected to a fluid delivery path; and a third valve port fluidly connected via a fluid port to a fluid recovery path.

[0089] Clause 28: A suction cleaner according to any one of Clauses 17 to 27, wherein a first end of the rod includes a first opening and a first connector configured to mate with a tool accessory, and a second end of the rod includes a second opening and a second connector configured to mate with a hose.

[0090] Clause 29: A suction cleaner according to any one of Clauses 17 to 28, wherein the rod is fixedly attached to or integrally formed with the tool accessory, and wherein the rod includes a connector configured to mate with a hose, thereby mounting the rod to the hose.

[0091] Clause 30: A suction cleaner according to any one of Clauses 17 to 28, wherein a rod is fixedly attached to or integrally formed with a hose, and wherein the rod includes a connector configured to cooperate with an auxiliary tool, thereby mounting the auxiliary tool to the rod.

[0092] While some representative models have been described in detail above, various alternative designs may exist for practicing the teachings defined in the appended claims. Those skilled in the art will recognize that modifications can be made to the disclosed embodiments without departing from the scope of this disclosure. Furthermore, the inventive concept explicitly includes combinations and sub-combinations of the described elements and features. The detailed description and accompanying drawings support and describe the teachings, the scope of which is defined only by the claims.

Claims

1. A rod assembly for a suction cleaner (10) having a fluid delivery system (12) and a fluid recovery system (14), the rod assembly comprising: Rod body (102), said rod body (102) comprising: The fluid delivery path (112) is configured to receive cleaning liquid via delivery line (120) and distribute the cleaning liquid through distributor outlet (48); The fluid recovery path (122) is configured to transfer debris received via the working airflow path (109); A fluid port (111) fluidly connects the fluid delivery path (112) and the fluid recovery path (122); and Its features are: A valve assembly (118) is actuated between an inactive state and a delivery state and a cleaning state. In the inactive state, the valve assembly (118) seals the fluid port (111) so that the fluid delivery path (112) and the fluid recovery path (122) are not in fluid communication, and the valve assembly (118) blocks the fluid supply from the delivery line (120). In the delivery state, the valve assembly (118) seals the fluid port (111) so that the fluid delivery path (112) and the fluid recovery path (122) are not in fluid communication, and the valve assembly (118) does not block the fluid supply from the delivery line (120). In the cleaning state, the valve assembly (118) does not seal the fluid port (111) so that the fluid delivery path (112) and the fluid recovery path (122) are in fluid communication, and the valve assembly (118) blocks the fluid supply toward the distributor outlet (48). The valve assembly (118) includes: A valve housing (124) defines a valve chamber (121) fluidly connected to the fluid delivery path (112) and the fluid recovery path (122), wherein the valve housing (124) includes: a first valve port (123) fluidly connected to the delivery line (120); a second valve port (125) fluidly connected to the fluid delivery path (112); and a third valve port (127) fluidly connected to the fluid recovery path (122) via the fluid port (111). The valve body (130) is movably mounted to the valve housing (124) and can slide from an inactive position to a fluid distribution position, in which the valve body (130) blocks the fluid supply from the delivery line (120), and in the fluid distribution position, the valve body (130) does not block the fluid supply from the delivery line (120). A valve body adjusting biasing member is located between the valve housing (124) and the valve body (130) and biases the valve body (130) to the inactive position; A valve plug (132) movably mounted to the valve housing (124) and slidable from a sealed position to a cleaning-actuated second active position, in which the valve plug (132) seals the fluid port (111) when the valve assembly (118) is in the inactive state, and in the cleaning-actuated second active position, when the valve assembly (118) is in the cleaning state, the valve plug (132) does not seal the fluid port (111); and A plug adjustment biasing member is located between the valve plug (132) and the valve body (130) and biases the valve plug (132) to the sealing position, in which the valve plug (132) seals the fluid port (111).

2. The rod assembly according to claim 1, further comprising: The actuator rod (140) is movable between a deactivated position and an activated position. In the deactivated position, the actuator rod (140) is disengaged from the valve assembly (118). In the activated position, the actuator rod (140) switches the valve assembly (118) to the cleanup state.

3. The rod assembly according to claim 2, wherein, The actuator rod (140) includes a finger-actuated lever arm (144, 244) located outside the rod body (102) and pivotally mounted to the rod body.

4. The rod assembly according to claim 3, wherein, The actuator rod (140) also includes a hammer (146) located inside the rod body (102) and fixedly connected to the arm (144) to rotate in unison with the arm, and the arm (144, 244, 344) includes a first sleeve (147) having a first semi-circular cross-section and a finger sleeve (149) protruding at an oblique angle from the first sleeve (147).

5. The rod assembly according to claim 4, wherein, The hammer (146) includes a second sleeve (151) externally connected to the first sleeve (147) and having a second semi-circular cross-section, and a hammer head (153) axially protruding from the second sleeve (151).

6. The rod assembly according to any one of claims 2 to 5, further comprising a rod adjustment biasing member for biasing the actuator rod (140) to the deactivated position.

7. The rod assembly according to claim 6, wherein, The lever adjustment biasing member includes a torsion spring (363) or a leaf spring (255) located between the actuator lever (140) and the rod (102) and pressing against the actuator lever and the rod.

8. The rod assembly according to any one of claims 2 to 5, further comprising a locking block (259) protruding from one of the actuator rod (140) and the rod body (102) and a locking recess (261) recessed into the other of the actuator rod (140) and the rod body (102), the locking block (259) being disposed in the locking recess (261) to hold the actuator rod (140) in the deactivated position.

9. The rod assembly according to any one of claims 1 to 5, wherein, The first end of the rod (102) includes a first opening and a first connector configured to cooperate with an auxiliary tool (30), and the second end of the rod (102) includes a second opening and a second connector configured to cooperate with an auxiliary hose (104).

10. A suction cleaner (10) comprising a rod assembly according to any one of claims 1 to 5.

Images