• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    FLUID DISPENSERS WITH GREATER MECHANICAL ADVANTAGE The fluid dispenser includes a dispensing mechanism that provides greater mechanical advantage. The dispensing mechanism includes a lever element and an actuator. The lever element includes a first lever section that receives an input force applied and a second lever section that applies an output force to the actuator. The lever element and/or the actuator are configured to provide at least two points of contact between the actuator and the second lever section during a dispensing stroke, so that the advantage gained in a first of the at least two points of contact is greater than the mechanical advantage gained in one second from the at least two points of contact.
    公开号:BR112015018755B1
    申请号:R112015018755-2
    申请日:2014-02-10
    公开日:2021-07-06
    发明作者:John T. Pelkey
    申请人:Ecolab Usa Inc；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [001]Disclosure refers to fluid dispensers. BACKGROUND
    [002]Hand washing is important in many industries, including hospitality (hotels, restaurants, etc.), healthcare (hospitals, nursing homes, etc.) venues. In addition, there are many other applications in which different fluids are dispensed. To facilitate hand cleaning, for example, fluid dispensers that dispense hand cleaning products can be placed near sinks in a kitchen, bathroom, or other location. Such fluid dispensers house a disposable or refillable product container, such as a cartridge or flexible bag, which contains a supply of fluid product to be dispensed. The fluid can include, for example, foams, liquids and/or gels. Dispensers are generally wall mounted and include a hinged lid that allows opening and closing of the dispenser housing so that the fluid product supply can be refilled or replaced. Some fluid dispensers are manually actuated by pushing or pulling a handle, bar, or button on the dispenser. Others dispense automatically upon detection of the user's presence or the user's hands near the dispenser. SUMMARY
    [003] In general, the disclosure refers to fluid dispensers and fluid dispensing mechanisms that have greater mechanical advantage as the dispensing mechanism is moved through its range of motion.
    [004] In one example, the disclosure refers to a dispenser comprising a housing, a reservoir positioned in the housing that contains a supply of a fluid to be dispensed, a dispensing mechanism configured to dispense a separate amount of fluid from the from the reservoir, the dispensing mechanism comprising a lever element having a first lever section accessible on the outside of the housing, a second lever section and a fulcrum connected between the first lever section and the second lever section, the fulcrum pivotally supported within the housing so that the lever member can move between a rest position and a dispense position when applying an input force to the first lever section, and an actuator configured to provide by minus two points of contact with the second lever section as the lever element is moved from the rest position to the position of it does not, so that the mechanical advantage presented in the first of the at least two contact points is greater than the mechanical advantage presented in the second of the at least two contact points, so that an output force applied to the actuator at the first contact point is greater than the output force applied to the actuator at the second point of contact.
    [005] In another example, the disclosure refers to a dispenser comprising a housing, a reservoir positioned in the housing that contains a supply of a fluid to be dispensed, and a dispensing mechanism configured to dispense a separate amount of fluid to from the reservoir, a dispensing mechanism comprising a lever element having a first lever section accessible on the outside of the housing, a second lever section and a fulcrum connected between the first lever section and the second lever section, the fulcrum pivotally supported within the housing so that the lever element can move between a rest position and a dispense position when applying an input force to the first lever section, wherein the element moves of lever between the rest position and the dispense position results in an output force being applied by the second lever section, and a configured actuator. to receive the application of the output force from the second lever section, a pump configured to receive the output force from the actuator and apply a corresponding dispensing force to the reservoir so as to dispense the separate amount of fluid from the reservoir, the second section of lever configured to provide at least two points of contact with the actuator as the lever element is moved from the rest position to the dispense position so that the mechanical advantage presented in the first of the at least two contact points is greater that the mechanical advantage presented at the second of the at least two contact points so that the output force applied to the actuator at the first point of contact is greater than the output force applied to the actuator at the second point of contact.
    [006] In another example, the disclosure refers to a dispenser comprising a housing, a reservoir positioned in the housing that contains a supply of a fluid to be dispensed, and a dispensing mechanism configured to dispense a separate amount of fluid to from the reservoir, a dispensing mechanism comprising a lever element having a first lever section accessible on the outside of the housing, a second lever section and a fulcrum connected between the first lever section and the second lever section, the fulcrum pivotally supported within the housing so that the lever element can move between a rest position and a dispense position when applying an input force to the first lever section so that the movement of the lever element between the rest position and the dispense position results in the application of a corresponding output force by the second lever section, i In an actuator configured to receive the application of output force from the second lever section, which results in the dispensing of the separate amount of fluid from the reservoir, the actuable lever and actuator element to provide at least two contact surfaces between the actuator and the second lever section as the lever element is moved from the rest position to the dispense position, so that the mechanical advantage presented in a first of the at least two contact surfaces is greater than the mechanical advantage presented in the second of the at least two contact surfaces, and so that the output force corresponding to the first contact surface is greater than the output force corresponding to the second contact surface.
    [007]The details of one or more examples are presented in the attached drawings and in the following description. Other features and advantages will be evident from the description and drawings and the current status of the claims. BRIEF DESCRIPTION OF THE DRAWINGS
    [008] Figure 1A is a perspective view of an exemplary fluid dispenser that provides greater mechanical advantage.
    [009] Figure 1B is a front perspective view of the exemplary fluid dispenser of Figure 1A with the cap removed.
    [010] Figure 1C is a front perspective view of the fluid dispenser of Figures 1A and 1B with the cover and pusher bar removed.
    [011] Figures 2A and 2B are simplified perspective views of an exemplary prior art dispensing mechanism for a fluid dispenser.
    [012] Figures 3A-3C show simplified side views of an exemplary dispensing mechanism in accordance with the present disclosure.
    [013] Figure 4 shows a simplified side view of another exemplary dispensing mechanism in accordance with the present disclosure.
    [014] Figures 5A and 5B show simplified side views of another exemplary dispensing mechanism in accordance with the present disclosure.
    [015] Figures 6A-6C show simplified side views of another exemplary dispensing mechanism in accordance with the present disclosure. DETAILED DESCRIPTION
    [016] In general, the disclosure refers to fluid dispensers and fluid dispensing mechanisms that provide greater mechanical advantage as the dispensing mechanism is moved through its entire range of motion. Dispensing fluid products, such as liquids, gels, foams, etc., is becoming increasingly difficult due to the demand for fluid products with higher concentration, thickness and quality. These product properties result in a product that is more difficult to dispense and thus requires more force to actuate the dispensing pump. However, dispenser manufacturers must at the same time comply with the American Disabilities Act (ABA), which states that the force required to activate the controls of a hand soap dispenser in public accommodation places or commercial facilities must not be greater than 2.27 kgf (5 lbf).
    [017] Figure 1A is a front perspective view of an exemplary fluid dispenser 100 that provides greater mechanical advantage in accordance with the present disclosure. Figure 1B is a front perspective view of the exemplary fluid dispenser 100 of Figure 1A with the cap removed. Figure 1C is a front perspective view of the exemplary 100m fluid dispenser of Figures 1A and 1B with the cover and pusher bar removed.
    [018] The exemplary dispenser 100 includes a housing 110 which has a front cover 102 and a back plate 104. A reservoir 112 (see Figures 1B and 1C) located within the housing 110 contains a supply of a fluid to be dispensed. The back plate 104 facilitates mounting the dispenser 100 to a wall or other object. In this example, housing 110 may include a hinge or hinges that allow cover 102 to hinge between a closed position and an open position. A button or latch 106 can be detented to disengage cover 102, thereby allowing cover 102 to be opened and closed. A lever element 120 in this example, the so-called push bar, manually operable by the user, is externally accessible on the outside of the housing 110 of the dispenser. The push bar 120 forms a part of a dispensing mechanism the other parts of which are physically located within the housing 110 when the dispenser is fully assembled and the lid is closed, as shown in Figures 1B and 1C. Although, for purposes of illustration, the concepts of the present disclosure are generally described herein with reference to a pusher bar as the user-actuable lever element, it is to be understood that any other type of manually-actuable component, such as a push button, a push or pull handle or other type of lever configuration can replace the push bar, and the disclosure is not limited in this regard.
    [019] As shown in Figures 1B and 1C, the pusher bar 120 also includes a hinge 118, in order to incorporate the pusher bar 120 into the dispenser 100, the hinge 118 can be pivotally mounted on the inner side of the housing of dispenser 110 or else hingedly supported within the dispenser 100. The pusher bar 120, when stepped on by the user, pivots around the hinge 118 through a range of motion from a rest position to a dispense position. In this example, the rest position is the position of the pusher bar when no force is applied and the dispense position is the fully tamped position into which a metered dose of fluid is dispensed.
    [020] In addition to the push bar 120, the dispensing mechanism of the dispenser 100 also includes an actuator 116. The application of an input force to the push bar 120 results in the corresponding application of an output force to the actuator 116. In response to the application of output force, the actuator mechanically activates a pump 114, which results in the dispensing of the separate amount of fluid from reservoir 112.
    [021] Figures 2A and 2B are simplified views of an exemplary prior art dispensing mechanism 150 for a fluid dispenser. Housing 110, back plate 104, etc. are not shown for purposes of illustration. Dispensing mechanism 150 includes a pusher bar 151, an actuator 156, and a pump 158. The pusher bar 151 generally operates on the principles of a lever. The push bar 151 includes a first lever section 152 and a second lever section 154 which pivot about an axis of rotation or fulcrum provided by a hinge and another pivot point 157. attached to recesses or other corresponding attachment points located within the inner side of the dispenser housing. Application of an input force by the user to the first lever section 152 in the direction indicated by arrow 162 causes the push bar 151 to pivot about the provided geometric axis. This results in a corresponding rotational movement of the second lever section 154 and the application of an output force to the actuator 156 and therefore to the pump 158, in the direction of arrow 162. The output force is applied to the lower surface of the actuator 156 by The pusher bar in Figures 2A and 2B is focused on a point of contact, viz., the distal end 16l of the second lever section 154.
    [022]The ratio of output force (FB) to input force (FA), or mechanical advantage (MA) can be used as a measure of lever force amplification. The concept of mechanical advantage can be applied to the push bar of a fluid dispenser, such as push bar 150 shown in Figures 2A and 2B. For example, the MA of pusher bar 151 can be expressed in terms of the input force, FA applied to the first lever section as indicated by arrow 162, and the output force, FB applied by the second lever section 154 to the actuator 156, as indicated by arrow 164. This ratio in turn is proportional to the ratio of the length, a of the first lever section 152 and the length, b of the second lever section 154 of a fulcrum or hinge 157:

    [023] In this example, the output force FB, and therefore the mechanical advantage provided by the push bar in Figures 2A and 2B, are focused on a point of contact, namely, the distal end 160 of the second lever section 154. Thus, the length of the second lever section 154, for purposes of calculating the mechanical advantage in this example, is equal to the total length b of the second lever section 154.
    [024] Figures 3A-3C show simplified side views of an exemplary dispensing mechanism 201 in accordance with the present disclosure. Dispensing mechanism 201 includes a pusher bar 200, an actuator 210, and a pump 208. The pusher bar 200 includes a first lever section 201, a second lever section 204, and a hinge 206. The first lever section 202 has a overall length, a, and the second lever section 204 has a length, b. Actuator 210 is configured to provide two points of contact with pusher bar 200. To this end, exemplary actuator 210 includes a first contact surface 212 configured to contact second lever section 204 at a first contact point and a second contact surface 214 configured to contact the second lever section 204 at a second contact point. The first contact point is generally indicated by reference number 215 and is located somewhere between hinge 206 and the distal end 216 of second lever section 204. The second contact point is generally indicated by reference number 217 and is located at the distal end 216 of the second lever section 204 in this example.
    [025]In operation, the application of a force by the user to the first lever section 152 in the direction generally indicated by arrow 203 causes the pusher bar 200 to articulate about the geometric axis provided by the hinge 206. As shown in Figure 3B, the second lever section 204 first contacts and applies a force to first contact surface 212 at a first contact point 215 located between hinge 206 and distal end 216 of second lever section 204. contact 215 and hinge 206 is indicated by a length c. The actuation length of the lever session to which the input force is applied at the start of the dispenser operation and therefore equivalent to distance c. It should be understood that distance c will vary somewhat as the pusher bar rotates around hinge 206; however, drive length c will always be relatively shorter than the overall length b of the second lever section 204 in this example.
    [026] Referring now to Figure 3C, as pusher bar 200 continues to rotate around hinge 206, second contact point 217 at distal end 216 of second lever section contacts contact surface 214 of actuator 210. The drive length of the lever section to which the input force is applied therefore transitions from the relatively short drive length c to a relatively longer drive length given by b.
    [027] The mechanical advantage provided by the relatively shorter drive length, MAshort, in this example can be defined by:

    [028] The mechanical advantage provided by the relatively longer drive length, MAlong, in this example can be defined by:

    [029] Since the push bar 200 first contacts the actuator 210 with the short drive length, c, the mechanical advantage applied at the start of dispenser operation is relatively higher than the mechanical advantage applied near the end of the operation of the dispenser. This allows the pump to begin dispensing with a relatively smaller amount of input force required by the user.
    [030]As pusher bar 200 rotates around hinge 206, actuator 210 receives contact from the long drive length, b, and MA is shortened compared to the short drive length, c. In addition, the longer drive length defined by length b reduces the angle, indicated by reference numeral 207, through which the push bar 200 must travel to completely tamp the pump. This can help keep pusher bar 202 free from discharge spray 218, as shown in Figure 3C. If the short drive length is used, then the push bar could interfere with spraying the pump, as the degree of rotation required to completely tamp down the push bar and to completely dispense product can be increased.
    [031] Figure 4 shows a simplified side view of another exemplary dispensing mechanism 221 in accordance with the present disclosure. Dispensing mechanism 221 includes a pusher bar 220, an actuator 230, and a pump in accordance with the present disclosure. The push bar 220 includes a first lever section 222, a second lever section 224, and a hinge 226. The first lever section 222 has an overall length, a, and the second lever section 224 has an overall length, b. in this example, actuator 230 is configured to have three contact surfaces: a first contact surface 232, a second contact surface 234, and a third contact surface 236. In operation, the second lever section 224 comes into contact with the first contact surface 222, with the second contact surface 224 and with the third contact surface 226 at drive lengths d, c and b, respectively, through the entire rotation of the push bar 220. Thus, as the push bar is moved through its rotation range, the mechanical advantage presented when applying a dispensing force (MAd provided by the actuation length d on the contact surface 232) is relatively greater than that presented during the middle of the stroke (MAc provided by the length of drive c on the contact surface 234), which itself is relatively larger than that presented near the end of the cure (MAb provided by the length of drive b on the contact surface 236). This relationship can be expressed by the following equation:

    [032] Figures 5A and 5B show simplified side views of another exemplary dispensing mechanism 241 in accordance with the present disclosure. Dispensing mechanism 241 includes a pusher bar 240, an actuator 250, and a pump in accordance with the present disclosure. Pusher bar 240 includes a first lever section 242, a second lever section 244, and a hinge 246. In this example, actuator 240 includes a curved contact surface 252. As pusher bar 240 rotates through its range of In movement, surface 252 provides a continuously variable contact point with second lever section 244. The contact point ranges from a first contact point 243 to a drive length and located between hinge 246 and distal end 248 of the second lever section 244 and a second contact point 245 at a drive length b located at the distal end of second lever section 244. Curved contact surface 252 can provide a smooth transition of contact over at least a portion of the second lever section 244 of push bar 240, which can help provide a smoother user experience while operating the dispenser. The angle of rotation 244 when the pusher bar is fully tamped down is small enough to avoid interference with the discharge fluid flow 249.
    [033] Since the push bar 240 first contacts the driver 250 with the short drive length, c, the mechanical advantage applied at the start of dispenser operation is relatively higher than the mechanical advantage applied near the end of the dispenser operation when push bar 240 is contacting actuator 250 with relatively longer drive length b.
    [034] Figures 6A-6C show simplified side views of another exemplary dispensing mechanism 261 in accordance with the present disclosure. Dispensing mechanism 261 includes a pusher bar 260, an actuator 170 and a pump 280 in accordance with the present disclosure. In this example, pusher bar 260 is configured to provide two points of contact with actuator 270. Pusher bar 260 includes a first lever section 262, a second lever section, and a hinge 266 connected between the first lever section 262 and the second lever section 264. The actuator 270 includes a contact surface 272. The second lever section 264 includes a base segment 261 connected to the hinge 266 and which provides a first contact point 165 and a second branch segment connected at distal direction adjacent to base segment 261 and providing a second contact point 267. In this example, to provide multiple contact points, base segment 292 and branch segment 264 are of different thickness to provide a first and a second contact points 265 and 267, respectively. In this example, the thickness i of the base segment 292 is relatively greater than the thickness j of the branch segment 294.
    [035]In operation, the second lever section 264 first applies an output force to the contact surface 272 at the relatively shorter drive length c. Then, as the rotation of the push bar 260 continues, the application of force transitions to the relatively longer drive length b. Thus, as pusher bar 260 is moved through its range of motion, the mechanical advantage obtained when initially applying a dispensing force (MAc provided by drive length and contact point 265) is relatively greater than the advantage mechanics obtained during the last part of the stroke (MAb provided by drive length b by contact point 267). This relationship can be expressed by the following equation:

    [036]Since push bar 260 first contacts actuator 270 with short drive length c, the mechanical advantage applied at the start of dispenser operation is relatively higher than the mechanical advantage applied during the last part of the dispenser running when push bar 260 is contacting actuator 270 with relatively longer drive length b.
    [037]Alternatively, pusher bar 260 can be configured to provide multiple points of contact. For example, second lever section 264 may include a base segment, such as base segment 292, connected to hinge 266 and provides a first contact point 265. Second lever section 264 may also include one or more segments. branches connected distally adjacent to the base segment 261 that provide one or more corresponding contact points. In this example, to provide multiple contact points, the base segment and each of the branch segment or segments can have different thicknesses in order to provide the various contact points. For example, each branch segment may have a relatively smaller thickness than the proximally adjacent branch segment.
    [038] Although specific exemplary fluid dispensers are shown and described herein that provide multiple points of contact during dispenser operation, it should be understood that many other variations of the fluid dispensing mechanism can also be used without abandoning the spirit and the scope of the present revelation. For example, the actuator and/or pusher bar can be configured in a number of different ways to provide multiple points of contact during dispenser actuation. For example, an actuator can be configured to include any desired number of contact surfaces to provide multiple points of contact with a pusher bar, thus obtaining a corresponding number of different coupling lengths across the range of movement of the pusher bar. . Additionally, or alternatively, a pusher bar can be configured to include any desired number of contact points in order to obtain multiple points of contact with an actuator throughout its range of motion. As another example, both the user terminal and the pusher bar can be configured to provide multiple contact points that correspond to a different number of drive lengths across the range of movement of the pusher bar. It is to be understood, therefore, that the disclosure is not limited to the specific examples shown and described herein, that many other variations of actuator and/or pusher bar configurations may be used, and that the disclosure is not limited in this regard.
    [039] Several examples have been described. These and other examples are within the scope of the following claims.
    权利要求:
    Claims (10)
    [0001]
    1. Dispenser (100) CHARACTERIZED by the fact that it comprises: a housing (110); a reservoir (112) positioned in the housing (110) that contains a supply of a fluid to be dispensed; a dispensing mechanism configured to dispense a discrete amount of fluid from the reservoir (112), the dispensing mechanism comprising: a lever element (120) having a first lever section (202) accessible on an outer side of the housing, a second lever section (204) and a fulcrum (157) connected between the first lever section (202) and the second lever section (204), the fulcrum (157) pivotally supported within the housing (110) so that the lever member (120) is movable between a rest position and a dispense position by applying an input force to the first lever section (202); and an actuator (210) configured to provide two points of contact (215, 217) with the second lever section (204) as the lever member (120) is moved from the rest position to the dispense position, the actuator (210) comprising a first contact surface (212) which is in contact with the second lever section (204) at a first of the two contact points, and a second contact surface (214) which is in contact with the second lever section (204), at a second of the two contact points (217), the first contact point (215) being located between the contact point (157) and the distal end (216) of the second section of the lever (204) and the second contact point (217) being located at the distal end (216) of the second lever section (204) so that the mechanical advantage obtained at the first contact point (215) is greater than the advantage mechanics obtained at the second point of contact (217), so that the output force applied to the The actuator (210) at the first point of contact (215) is greater than the output force applied to the actuator at the second point of contact (217).
    [0002]
    2. Dispenser according to claim 1, CHARACTERIZED by the fact that the lever element (120) comprises one of a pusher bar, a push button or a handle.
    [0003]
    3. Dispenser according to claim 1, CHARACTERIZED by the fact that the lever element (120) can be manually moved by the user between the rest position and the dispense position.
    [0004]
    4. Dispenser according to claim 1, CHARACTERIZED by the fact that the drive length of the first contact point (215) is relatively smaller than the drive length provided by the second contact point (217).
    [0005]
    5. Dispenser according to claim 1, CHARACTERIZED by the fact that the first lever section (202) has a length a, the second lever section (204) has a length b, the first contact point (215) it has a drive length c, which is relatively shorter than the length b of the second lever section (204), and the mechanical advantage MAshort provided by the first contact point (215) is:
    [0006]
    6. Dispenser according to claim 1, CHARACTERIZED by the fact that the first lever section (202) has a length a, the second lever section (204) has a length b, the second contact point (217) it has a drive length substantially equal to the length b of the second lever section (204) and the MAlong mechanical advantage provided by the second contact point (217) is:
    [0007]
    7. Dispenser according to claim 1, CHARACTERIZED by the fact that the input force is not greater than 22.24 Newton (2.27 kgf (5 lbf)).
    [0008]
    8. Dispenser according to claim 1, CHARACTERIZED in that the actuator (210) also includes a first contact surface (212) configured to receive the application of an output force from the second lever section (204) on the first contact point (215) during a first part of a dispensing stroke and a second contact surface (214) configured to receive the application of an output force from the second lever section (204) to the second contact point (217 ) during a second part of a waiver course.
    [0009]
    9. Dispenser according to claim 1, CHARACTERIZED by the fact that it also includes a pump (114), and in which the actuator (210), in response to the application of the output force, mechanically activates the pump (114) resulting in dispensing the discrete amount of liquid from the reservoir (112).
    [0010]
    10. Dispenser according to claim 1, CHARACTERIZED by the fact that the fluid product comprises one of a liquid, a gel or a foam.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CA2896663C|2021-07-06|
    EP2956042A4|2016-10-05|
    AU2014216538A1|2015-07-09|
    CA2896663A1|2014-08-21|
    WO2014126835A1|2014-08-21|
    EP2956042B1|2018-03-28|
    JP6290933B2|2018-03-07|
    ES2673217T3|2018-06-20|
    US9408502B2|2016-08-09|
    US8991655B2|2015-03-31|
    CN105072961B|2018-06-01|
    CN105072961A|2015-11-18|
    AU2014216538B2|2018-01-18|
    BR112015018755A2|2017-07-18|
    JP2016513048A|2016-05-12|
    US20140231459A1|2014-08-21|
    US20150164285A1|2015-06-18|
    EP2956042A1|2015-12-23|
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    法律状态:
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/02/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/768,110|US8991655B2|2013-02-15|2013-02-15|Fluid dispensers with increased mechanical advantage|
    US13/768,110|2013-02-15|
    PCT/US2014/015498|WO2014126835A1|2013-02-15|2014-02-10|Fluid dispensers with increased mechanical advantage|
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