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1. (WO2018119506) DISPOSITIF DE MESURE DE NIVEAU DE FLUIDE LIQUIDE BASÉ SUR UN MOUVEMENT DE ROTATION ANGULAIRE
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"LIQUID FLUID LEVEL METERING DEVICE BASED ON ANGULAR

ROTATIONAL MOVEMENT"

Field of the Invention

[01 ] The present invention is related to a liquid fluid level metering device based on angular rotational movement and, more particularly, a liquid fluid level metering device with adjustment of the angular rotational movement of the movable body in relation to the static body.

[02] Accordingly, the goal of the present invention generally refers to the technological field of the means for indicating or metering the liquid level, according to class G01 F 23/00 of the International Patent Classification and, in a more specific manner, it refers to the technological field of liquid level indication or metering devices using rotational arms or other rotating transmission elements, according to class G01 F 23/32 of the International Patent Classification.

Fundamentals of the Invention

[03] As is well known to those skilled in the art, the present state of the art comprises a plurality of fluid level metering devices, such as for example, the sensors dedicated to metering the fuel level within a fuel tank of a motor vehicle.

[04] The fluid level metering device described and illustrated in the patent document US 2016/0047686 is of particular interest for the field of the invention now addressed.

[05] Particularly, with respect to the solutions and constructive aspects of the goal of said patent document US 2016/0047686, it is noted that the fluid level metering device therein comprises a static body (housing the magnetic sensing components), a movable body (housing the sensing magnet) and an extension rod which, secured to said movable body, comprises a float element at its free end. All this construction, as well as the functional principle thereof, is widely known to those skilled in the art. In general terms, the variation of the fluid level (in a confined environment) alters the height of the float element, which imposes a rotational movement of the entire movable body in relation to the static body, this movement being able to change the magnetic field of the magnet (present in the movable body) in relation to magnetic sensing components. This means that, In general terms, the position of the float element is metered, remotely and indirectly, by said magnetic sensing components.

[06] The general construction of the fluid level metering device of the patent document US 2016/0047686 provides for adjusting the extent of the angular rotational movement of the movable body in relation to the static body. This means that such general construction comprises stoppers or limiters, capable of limiting the movement of the movable body in relation to the static body. Such adjustment possibility is extremely interesting, after all, the versatility of application and/or use of said fluid level metering device increases.

[07] Thus, the same fluid level metering device of the patent document US 2016/0047686 can be applied/used, for example, in different fuel tanks of different automotive vehicles, whereby it is only necessary to adjust the extension of the angular rotational movement of the movable body in relation to the static body, after all, the end-of-scale metering can be better used in each specific situation. It is emphasized that those skilled in the art already know all the problems and needs regarding the correct definition of end-of-scale metering of fluid level metering devices used to metering the level of fuel in a fuel tank of a vehicle.

[08] To this end, the static body of the fluid level metering device of the patent document US 2016/0047686 comprises at least two vertically positioned and spaced travel channels, being that each of them is defined as a particular extension of angular rotational movement (of the movable body in relation to the static body), that is, these travel channels are limited by stoppers or limiters of end-of-course, distinctly positioned so as to, for example, the upper travel channel is larger (allows a greater extent of angular rotational movement between the movable body and the static body) than the immediately lower travel channel. Since the static body has at least two travel channels vertically positioned and spaced from each other, it is the movable body which comprises a means for selecting one of the at least two travel channels

[09] In this regard, the movable body of the fluid level metering device of the patent document US 2016/0047686 comprises a vertical scale composed of at least two holes, vertically positioned and spaced apart. The positioning and spacing between such holes is analogous, regarding dimensional issues, to the positioning and spacing of the travel channels of the static body. Such a construction allows the free end of the extension rod to be used to select the travel channel of interest, whereby said free end of the extension rod is positioned, in order to pierce the bore of the movable body and relative travel channel of interest of the static body. This assembly causes the free end of the extension rod to cooperate with stoppers or limiters of end-of-course of the selected travel channel, in order to determine the extent of the angular rotational movement of the movable body in relation to the static body.

[010] Although the general construction of the fluid level metering device of the patent document US 2016/0047686 makes it possible to adjust and/or select the extent of the angular rotational movement of the movable body in relation to the static body, it is found that this same general construction limits the number of travel channels to the overall length of the static body, that is, in order to allow multiple travel channels to exist, it is necessary for the static body to have a large vertical extent. In addition, it is also necessary that the movable body comprises a greater number of orifices and that the rod comprises a longer length.

[01 1 ] Considering the current trends and needs for miniaturization of automotive components, it is noted that the patent document US 2016/0047686, even presenting a solution, brings with it a great technical limitation, after all, or one chooses to make an extensive skillful static body that can be used in a wide range of motor vehicles or one choose to make a non-extensive static body that is able to be used in a limited range of motor vehicles. It is based on such scenario that the present invention arises.

Objectives of the Invention

[012] Based on the above exposed context, it is the central goal of the present invention to provide a liquid fluid level metering device based on angular rotational movement, provided with adjustment selection for the angular rotational movement of the movable body in relation to the static body.

[013] In this regard, it is a goal of the present invention that the number of travel channels existing in the static body be disconnected from the vertical extent of said static body. It is a further goal of the present invention that the means of selecting one among numerous travel channels in the static body is not based on predetermined positions in the movable body of the liquid fluid level metering device.

[014] Accordingly, it is also one of the general goals of the present invention to provide a liquid fluid level metering device based on angular rotational movement of small dimensions and, in a simultaneously manner, provided with multiple options for adjustment selection of the extent of movement of the movable body in relation to the static body.

Brief Description of the invention

[015] The aforementioned goals are fully achieved by the liquid fluid level metering device based on angular rotational movement, which comprises a static body, a movable body and an extension rod, wherein said

movable body is pivotally fastened to the static body, in order to develop angular rotational movement relative thereto, and said extension rod comprises a free end and an end fastened to said movable body, in order to develop angular rotational movement integral thereto. According to the present invention, the static body comprises at least one horizontal recess defined between two side walls, which comprise at least two bulkheads offset from one another in the planes of depth and width, in order to form at least two travel channels.

[016] In a first embodiment of the invention, the liquid fluid level metering device based on angular rotational movement further comprises at least one selection element integral with said movable body, which comprises an extension analogous to the position of one among the at least two bulkheads, in order to develop integral movement to the movable body of one of the at least two travel channels.

[017] In a second embodiment of the present invention, the liquid fluid level metering device based on angular rotational movement further comprises at least one selection element integral with said movable body, which is capable of being selectively moveable in relation to the depth of the static body, in order to develop integral movement with the movable body in one of the at least two travel channels.

[018] Regardless of the embodiment of the invention, it is noted that the selection element comprises the end of the extension rod fastened to the movable body and the horizontal recess defined between two side walls is arranged at the upper end of the static body.

Brief Description of Drawings

[019] The present invention will be described in detail on the basis of the following figures, wherein:

[020] Figure 1 shows, in isometric view, the preferred embodiment of the metering device, in accordance with the present invention; [021 ] Figure 2 shows, in isometric view and enlarged detail of said isometric view, the static body of the preferred embodiment of the metering device, in accordance with the present invention;

[022] Figure 3 shows, in top view, the static body of the preferred embodiment of the metering device, in accordance with the present invention;

[023] Figures 4A and 4B show, in schematic top view, two possibilities for adjusting the extent of the angular rotational movement of the movable body in relation to the static body in the preferred embodiment of the metering device, in accordance with the present invention; and

[024] Figure 5 shows, in isometric view and enlarged detail of said isometric view, a possibility of adjusting the extension of the angular rotational movement of the movable body in relation to the static body in the preferred embodiment of the metering device, in accordance with the present invention.

Detailed Description of the Invention

[025] It is first of all to be clarified that although the liquid fluid level metering device based on angular rotational movement of the present invention is a magnetic sensor fluid level metering device, the inventive scope disclosed herein also applies to the resistive sensor fluid level metering devices, that is, the inventive core of the present invention encompasses any and all fluid level metering devices based on rotating arms or other rotating transmission elements.

[026] Thus, Figures 1 , 2, 3, 4A, 4B, and 5, hereinafter described in detail, are related only to a possible embodiment of the present invention and, therefore, certain terms used in the following detailed description should be considered in an inclusive and non-literal manner, always based on the illustrative figures and technical effects achieved.

[027] In general terms, as is particularly shown in Figure 1 , the preferred embodiment of the fluid level metering device disclosed herein, as well as the vast majority of the congeners, belonging to the present state of the art, is generally composed of a static body 1 , a movable body 2 and an extension rod 3.

[028] In addition, it is further noted that said movable body 2 is pivotally fastened to the static body 1 , in order to develop angular rotational movement relative thereto, and said extension rod 3 comprises a free end (provided with a float element not shown) and an end fastened to said movable body 2, in order to develop angular rotational movement integral thereto.

[029] In view of the scope of the present invention, general details regarding the sensing components of bodies 1 and 2, as well as to the constructive details of the pivotal attachment between bodies 1 and 2, are purposely omitted and/or not described in detail. In addition, further fixing details between the extension rod 3, movable body 2 and float element (not shown) are also purposely omitted or not exhaustively detailed, after all, the present invention is independent of these other details omitted or not exhaustively detailed.

[030] Figure 2 shows, in particular, the static body 1 , according to the preferred embodiment of the liquid fluid level metering device based on angular rotational movement. In general terms, it is in the body 1 that much of the inventive merit of the present invention lies.

[031 ] In general terms, the static body 1 comprises a structure 1 1 into which magnetic sensing components (not shown) are already housed. In the upper region of the structure 1 1 of the static body 1 , is provided a horizontal recess defined between two side walls 12, which are arranged parallel to each other. Each of the side walls 12 comprises three bulkheads 41 , 42, 43, which are offset from each other at the depth and width of the static body 1 . Preferably, said horizontal recess defined between two side walls 12 is located in the upper portion of the static body 1 , but optionally, such a horizontal recess could be located at the lower end of the static body 1 , for example.

[032] As shown in figure 3, it will be seen that the horizontal recess of the static body 1 - defined between the side walls 12 - is composed of three pairs of walls 41 , 42, 43, which (can be formed by projections originating from the side walls 12 themselves, or further, which may be formed by walls additional to the side walls 12) form pairs parallel aligned with respect to each other.

[033] The arrangement of these pairs of bulkheads 41 , 42, 43 eventually becomes, in the embodiment shown, three travel channels 51 , 52, 53.

[034] Since the pairs of bulkheads 41 , 42, 43 are offset from each other in the width of the static body 1 , it is noted, for example, that the travel channel 51 is longer than the travel channels 52 and 53. Since the pairs of bulkheads 41 , 42, 43 are offset from one another in the depth of the static body 1 , it is noted, for example, that the travel channel 52 (intermediate channel) is arranged between the travel channels 51 and 53 (end channels). Accordingly, it is found that each of the travel channels 51 , 52, 53 comprises an exclusive extension and comprises an exclusive local in the static body 1 .

[035] Different from the state of the art (number of travel channels linked to the static body height, as defined in the patent document US 2016/0047686), in the present invention, the number of travel channels is basically linked to the dimensions width and depth of the static body 1 .

[036] The observed advantage refers to the fact that, instead of the number of travel channels being bound to a single Cartesian coordinate (patent document US 2016/0047686), the number of travel channels 51 , 52, 53, according to the present invention, is linked to the combination of two

Cartesian coordinates (width and depth coordinates), which allows for greater flexibility in the dimensioning of the static body 1 and in the definition of the number of travel channels. It is possible, for example, to form a plurality of travel channels in a static body of great depth and width, in a static body of wide width and low depth, or in a static body of moderate width and depth, in accordance with some specific project.

[037] In order for the angular rotational movement extension of the movable body 2 to be delimited by the extension of one of the travel channels 51 , 52, 53, the liquid fluid level metering device based on angular rotational movement further comprises an element that is movable integrally with the movable body 2, in relation to the static body 1 and, more particularly, it develops a movement fixed to the movable body 2, with respect to the static body 1 in only one of all the travel channels 51 , 52, 53 defined between only one pair of all pairs of bulkheads 41 , 42, 43.

[038] This means that said selection element 6, when in functional position, is inserted into the horizontal recess of the static body 1 such that its depth is analogous to the depth of only one of the travel channels 51 , 52, 53 and, consequently, the pair of bulkheads 41 , 42, 43 of said travel channel 51 , 52, 53 ends up defining stoppers of end-of-course to the movement of the selection element 6, which movement is integral with the movement of the movable body 2, in relation to the static body 1 .

[039] For this, two constructive possibilities are envisaged.

[040] In a first constructive possibility, said selection element 6 comprises an extension analogous to the position of one of the at least two bulkheads 41 , 42, 43, in order to provide solid movement to the movable body 2 in one of the at least two travel channels 51 , 52, 53. This means that in this constructive mode the length of the selection element 6, which is inserted into the horizontal recess of the static body 1 is specially dimensioned in accordance with the position of the desired travel channel 51 , 52, 53.

[041 ] In a second constructive possibility, it is selectively moveable in relation to the depth of the static body 1 , in order to develop movement integral with the movable body 2 in one of the at least two travel channels 51 , 52, 53. This means that, in this constructive embodiment, the length of the selection element 6 does not need to be specific, after all, it can be moved, in order to reach the desired travel channel 51 , 52, 53.

[042] As particularly shown in Figure 4A, the selection element 6 has a maximum length analogous to the maximum depth of the horizontal recess of the static body 1 , and, consequently, its end is arranged in the travel channel 53 (of smaller extent and greater depth). In this way, the extent of the angular rotational movement of the movable body 2 in relation to the static body 1 is restricted to the nominal extent of the travel channel 53.

[043] As particularly shown in Figure 4B, the selection element 6 has a maximum length analogous to the minimum depth of the horizontal recess of the static body 1 , and, as a consequence, its end is arranged in the travel channel 51 (of greater extent and smaller depth). In this way, the extent of the angular rotational movement of the movable body 2 in relation to the static body 1 is restricted to the nominal extent of the travel channel 51 .

[044] It is emphasized, in this context, that unlike what occurs in the state of the art (the relative position between the extension rod and the movable body must vary, in order to vary the selection of the travel channel, as defined in the patent US 2016/0047686) the selection element 6 and the movable body 2 maintains the same relative positioning, in any option for adjusting the movement extent of the movable body 2 with respect to the static body 1 .

[045] All of the features outlined above are more than sufficient to ensure that all of the aforementioned goals are fully achieved, after all, here is disclosed a liquid fluid level metering device based on angular rotational movement whose ability to adjust the extent of the angular rotational

movement between the movable body and the static body has no particular dependence on the height of the static body or the vertical displacement of the extension rod in relation to the movable body.

[046] Finally, it is also important to note that the above description has the sole objective of describing, in an exemplary manner, the particular embodiment of the present invention. It is therefore clear that modifications, variations and constructive combinations of the elements exerting the same function substantially in the same manner to achieve the same results, remain within the scope of protection defined by the appended claims.