WHEEL WASHING DEVICE (Machine-translation by Google Translate, not legally binding)

专利摘要:
Wheel washing device. The device is adaptable to the size of the rim of the wheel to be cleaned. It comprises a drive shaft (2) connected to a drive (6), linked to a central cleaning element (16) of a cleaning assembly (13) that also includes secondary cleaning elements (17). It has a first scissor mechanism that moves the drive shaft (2) in a direction parallel to the ground, increasing or decreasing the distance between the drive shaft (2) and the ground until the drive shaft (2) faces the center of the wheel . It has a second scissor mechanism, connected to the secondary cleaning elements (17), which moves in a synchronized manner dependent on the first mechanism and is configured to increase or decrease the diameter of the cleaning assembly (13) by moving the cleaning elements. secondary cleaning (17) in a direction transverse to the drive shaft (2). (Machine-translation by Google Translate, not legally binding)
公开号:ES2819326A1
申请号:ES201930905
申请日:2019-10-14
公开日:2021-04-15
发明作者:Puchades Yolanda Tomas
申请人:Istobal SA；
IPC主号:

专利说明:

[0004] OBJECT OF THE INVENTION
[0005] The present invention as expressed in the wording of this specification refers to a device for washing wheels adaptable to the diameter of the rim of the vehicle, in particular for automatic washing machines.
[0007] TECHNICAL PROBLEM TO BE SOLVED AND BACKGROUND OF THE INVENTION
[0008] In the technical field of vehicle washing, it is known that tar deposits, antifreeze salts, brake dust, insects and other similar residues are complex to remove, particularly from vehicle tires. This is due to the fact that, today, said wheels acquire increasingly complex geometries, comprising numerous surfaces with difficult access for cleaning.
[0010] On the other hand, there are two clear trends in the automotive sector, on the one hand the manufacture of large vehicles, such as the SUV typology, and on the other hand small urban vehicles, such as the incipient electric vehicles. An essential difference between the vehicles of these two trends, in addition to the volume of the vehicle, is the variety in the diameter of the tires.
[0012] At present, the art proposes wheel washing devices equipped with one or more rotating brushes responsible for washing the spokes of the rims. In general, these devices are integrated in car wash plants, typically move with the movement of the portal or the car wash, and interact with detection systems, such as photocells or light barriers, which detect the presence of the wheel and a correct position of the device relative to the wheel. When correct positioning has been detected, the preset cleaning operation is activated.
[0014] The technical problem that arises, due to the wide variety of tire sizes that coexist in the market, is that current cleaning devices cannot adapt to tires of such different sizes. In order to solve this drawback, the state of the art proposes washing devices equipped with rotating brushes with a very large diameter, similar to the diameter of the largest rim to be washed, or with longer bristles, as described in patent KR100732996. Clearly, these solutions are inefficient, since the cost of large brushes is very high. Furthermore, from a construction point of view, a large brush has a high moment of inertia and requires appropriately sized braking and handling elements.
[0016] Alternatively, the state of the art proposes wheel washing devices in which the rotating cleaning brush has an offset drive shaft. This shaft rotates and eccentrically washes surfaces that are larger than its own diameter, as described in patent WO2018184691. Also in this case, the size of the control elements, braking and support systems, is essential so that the eccentric rotation does not cause too high torsional loads.
[0018] Sometimes, in order to obtain a better result, the wheel rim cleaning brushes perform operations to change the direction of rotation to better reach all the spaces. This movement is carried out while the brush is resting on the rim.
[0020] The state of the art closest to the present invention describes patents that adapt their size to the diameter of the wheel.
[0022] Thus, for example, patent DE3740627 describes a device for washing wheels that is adapted to the diameter of the rim by means of a plurality of brushing elements separated from the center of a main scrubbing disc. This plurality of additional brushes has bristles with greater length and the brushes are attached to the main disk by means of a flexible element that allows the brush to adapt to the contour of the wheel.
[0024] The device described above has the drawback that the increase in diameter is not compensated with the axis of the disk, so that even if the diameter of the washing area is increased, it is not centered with the diameter of the wheel. Thus, inefficient washing is performed because the full size of the rim is not reached. Furthermore, the connecting elements between the main brush and the additional brushes have to withstand great fatigue stresses.
[0026] Another document that describes the concept of adapting the wheel wash system to the Rim diameter is disclosed in patent KR101098889. The device described in said patent has an articulated main plate with at least one connecting piece that connects a crown of brushes. Said crown of brushes opens when it exerts pressure on the rim of the vehicle. To return to its original state, the device has a spring that picks up the connection piece when the brushes stop exerting pressure.
[0028] This device improves the robustness of the assembly previously described in patent DE3740627. However, it does not solve the problem of wheel height compensation, since the reference for position control is taken from the center of the rim and not from the bottom of the rim. Likewise, the fact of having to support the vehicle rim at specific points to exert adequate pressure on the rim to open the brush crown is a drawback for rims with spaced spokes.
[0030] A solution for the previously described devices would consist of including an additional drive that modifies the height of the center of the device, thus compensating the height of the wheel with respect to the extended diameter, as described in patents EP2332793 and US7582164. The first one consists of a wheel washing device movable in three axes by means of push drives. It has the limitation that it does not allow adapting the diameter of the brush to the wheel, so it does not comply with the existing problems in the state of the art. The second patent describes a high pressure water wheel washing system that allows the center of the nozzle to be adjusted to the height of the center of the wheel. It also allows the water projection radius to be increased or decreased depending on the diameter of the rim by moving the nozzle closer or farther away. In this way it compensates the height of the center of the nozzle and the rim with the projection radius.
[0032] The present invention aims to solve the aforementioned problems to provide a wheel washing system that allows washing both small and large diameter rims by means of a device that allows to adapt the diameter, compensate the height and perform rotary friction scrubbing, by means of a single drive.
[0034] DESCRIPTION OF THE INVENTION
[0035] In order to achieve the objectives and avoid the inconveniences mentioned in the Previous sections, the invention proposes a device for washing vehicle wheels in automatic cleaning machines that allows adapting the size of the brush to different wheel diameters, compensating the height when opening the brush taking the floor of the installation as a reference and performing the brush rubbing against the rim, all with a single drive.
[0037] The device of the invention comprises a holding base that is preferably located inside a column of the washing machine in which it is installed. This base is the support for the rest of the elements of the device.
[0039] The cleaning assembly of the device comprises at least one main cleaning element, arranged at the end of a driving shaft connected to a drive, and secondary cleaning elements. The secondary cleaning elements have the possibility of movement relative to the main cleaning element, moving towards or away from it to increase or decrease the diameter of the cleaning assembly. In this way, the entire surface of the rim can be covered by rotating the cleaning unit, regardless of the diameter of the rim. The cleaning elements are friction cleaning elements and are preferably brushes.
[0041] To compensate for the increase in the diameter of the cleaning assembly formed by cleaning elements (which can be brushes), the device also makes a change in the height at which the cleaning assembly is positioned with respect to the floor.
[0043] The change of position of the cleaning assembly is carried out by means of a first scissor mechanism and the change of diameter of the cleaning assembly is carried out by a second scissor mechanism. Both mechanisms work in a synchronized way to allow a correct adaptation of the device to the size of each wheel.
[0045] The device moves between a minimum opening position in which the distance from the drive axle to the ground is reduced, compensating for the minimum opening diameter of the cleaning assembly (that is, it is the appropriate position to clean a small wheel) and an extreme maximum opening position is the position in which the distance from the drive axle of the device to the ground is increased, compensating for the maximum opening diameter of the brush (that is, it is the appropriate position to perform the cleaning of a large wheel) . Likewise, the brush can be adapted and used in any intermediate position between said minimum and maximum opening positions.
[0047] A single drive is responsible for carrying out the movement necessary to carry out the three actions that the device allows, that is, diameter adaptation, height compensation and rotation for rubbing.
[0049] The first scissor mechanism comprises a fixed extension arm, anchored to the base of the device and a mobile extension arm, with the possibility of movement along a guide housed in the base, articulated with each other. This first scissor mechanism works in a plane perpendicular to the plane of the direction of advance of the washing machine, parallel to the ground. Thus, the movement of the scissor mechanism is always oriented towards the vehicle wheel.
[0051] Preferably, there are two detection elements at the base that make it possible to establish the maximum travel of the first scissor mechanism. That is, they delimit the path between the minimum opening position and the maximum opening position.
[0053] The fixed extension arm includes a bracket for actuating the device so that there is always a fixed connection between the base and the actuator. Furthermore, the drive is connected to the drive shaft, at the end of which is the main cleaning element, and is in charge of controlling its movement, which in a preferred embodiment is a turning movement about its longitudinal axis. In this case, the movable extension arm is attached to a nut that travels in a threaded section of the drive shaft, thus linking the first scissor mechanism and the drive shaft.
[0055] The second scissor mechanism is linked to the drive shaft and is linked to the secondary cleaning elements. More specifically, it comprises support arms, which are attached to a mobile hub, in turn attached to the previously described nut, and which are attached, through supports, to the secondary cleaning elements. Likewise, the second scissor mechanism comprises additional extension arms, hingedly connected to the support arms and connected to a fixed bushing arranged on the drive shaft.
[0057] As there is a fixed anchor point in the support arm to the support of the secondary cleaning elements, and a mobile anchor point in the opposite part (mobile hub), the advance of the nut on the drive shaft causes the opening of the semi-brush connected to support arm, directed by the additional extension arm.
[0059] At one end of the drive shaft is a guide support hub, which rotates in line with the drive shaft. Guide rods (one for each of the secondary cleaning elements) are attached to said guide cube. Said guide rods direct the movement of the support of the corresponding secondary cleaning element, moving the latter away from the drive shaft, thus increasing the diameter of the rubbed area.
[0061] Yet another advantage of the present invention is that the support base can be mounted above the axis of rotation (drive shaft) or below the axis of rotation (drive shaft). The device works efficiently in both cases.
[0063] When the support base is mounted above the drive axle, the expansion movement of the first scissor mechanism implies a downward displacement of the drive axle, that is, it decreases the distance from the drive axle to the ground (suitable position for small wheels). In this case, when the first scissor mechanism is folded, the drive axle moves upward, increasing the distance between the drive axle and the ground (suitable position for large wheels).
[0065] When the support base is mounted below the drive axle, the expansion movement of the first scissor mechanism involves an upward movement of the drive axle, that is, it increases the distance from the drive axle to the ground (suitable position for large wheels). In this setup, when the first scissor mechanism is folded, the drive axle moves downward, decreasing the distance between the drive axle and the ground (suitable position for small wheels).
[0067] BRIEF DESCRIPTION OF THE FIGURES
[0068] Below, to facilitate a better understanding of this specification and forming an integral part thereof, a series of figures is attached in which the object of the invention has been represented by way of illustration and not limitation.
[0070] Figure 1.- Shows a profile view of the wheel washing device in the minimum opening position, coinciding with the minimum diameter position of the cleaning element.
[0071] Figure 2.- Shows a perspective view of the wheel washing device in the minimum opening position.
[0073] Figure 3.- Shows a profile view of the wheel washing device in the maximum opening position, coinciding with the position of maximum diameter of the cleaning element.
[0075] Figure 4.- Shows a perspective view of the wheel washing device in the maximum opening position.
[0077] Figure 5. - Shows a perspective view of an embodiment of the wheel washing device in which the direction of movement of the cleaning element towards the vehicle has been represented.
[0079] Figure 6. - Shows a front view of the cleaning element in the minimum opening position and in the maximum opening position.
[0081] Figure 7.- Shows a profile view of the device in the two positions shown in figure 6.
[0083] Below is a list of the different elements represented in the figures that make up the invention:
[0085] 1. Base
[0086] 2. Drive shaft
[0087] 3. Guide
[0088] 4. Mobile extension arm
[0089] 5. Fixed extension arm
[0090] 6. Drive
[0091] 7. Piece
[0092] 8. Mobile bushing
[0093] 9. Fixed bushing
[0094] 10. Movable support
[0095] 11. Maximum diameter rim
[0096] 12. Minimum diameter rim
[0097] 13. Cleaning set
[0098] 14. Additional extension arm
[0099] 15. Support arm
[0100] 16. Main cleaning element
[0101] 17. Secondary cleaning element
[0102] to. Moving the cleaning elements to the vehicle
[0103] b. Fixed height from the outer limit of the cleaning elements to the floor, independent of the diameter of the wiping area
[0104] c. Drive shaft height corresponding to maximum open position, maximum diameter of cleaning assembly
[0105] c '. Variable drive shaft height corresponding to minimum opening position, minimum diameter of cleaning assembly
[0107] DESCRIPTION OF AN EXAMPLE OF EMBODIMENT OF THE INVENTION
[0108] The present invention should not be limited to the embodiment described herein. Other configurations can be made by those skilled in the art in light of the present description. Accordingly, the scope of the invention is defined by the following claims.
[0110] The device comprises a base (1) with at least one guide (3) in which a movable extension arm (4) moves that is part of a first scissor mechanism. This first scissor mechanism also comprises a fixed extension arm (5), attached at a fixed point to the base (1), with the possibility of turning around said fixed point. The movable extension arm (4) and the fixed extension arm (5) are linked at a midpoint around which they are articulated to each other.
[0112] In the base (1) you can also find position detectors, which are preferably photocells. The detectors are configured to determine the position of the movable extension arm (4). By means of a drive (6) of the device, a drive shaft (2) is moved, more preferably, said drive shaft (2) is rotated and by rotating said drive shaft (2) the movement of the first scissor mechanism is caused. The drive (6) can be controlled by the position detectors, if any.
[0114] At the end of the drive shaft (2) there is a central cleaning element (16) that rotates when the drive shaft (2) rotates. The central cleaning element (16) is part of a cleaning assembly (13) that also includes secondary cleaning elements (17).
[0116] The first scissor mechanism is configured to move the drive shaft (2) at least in a direction parallel to the ground, increasing or decreasing the distance between the drive shaft (2) and the ground such that it positions the drive shaft (2) facing the center of the rim (thus adapting to the height of the center of the rim).
[0118] Likewise, the device comprises a second scissor mechanism, which moves in a synchronized and dependent manner with the first scissor mechanism and which is linked to the drive shaft (2). It is configured to increase or decrease the diameter of the cleaning assembly (13) by moving the secondary cleaning elements (17) in a direction perpendicular to the drive axis (2).
[0120] Figures 1 and 2 show the wheel cleaning device in a minimally open position in which the cleaning assembly (13) has the minimum possible diameter. It corresponds to the appropriate position for cleaning smaller wheels (rims). As can be seen in said figures, the first scissor mechanism is fully extended. That is, the drive shaft (2) is in a position as close to the ground as possible. It is also seen how the second scissor mechanism is in the maximum folding position.
[0122] Figures 3 and 4 show the cleaning device in a position of maximum opening in which the cleaning assembly (13) has the maximum possible diameter. This is the proper position for cleaning larger wheels (rims). In this case, the first scissor mechanism is fully folded, so that the drive shaft (2) is as far from the ground as possible and the second scissor mechanism is extended, increasing the diameter of the cleaning assembly (13).
[0124] The drive (6) may be mounted on a support of the drive to which the fixed extension arm (5) of the first scissor mechanism is hingedly attached. The drive (6) is linked to a drive shaft (2) to drive or brake a rotational movement of said drive shaft (2). Likewise, the drive shaft (2) is linked to the first scissor mechanism that, when moving, brings the drive shaft (2) closer to or away from the ground. The second The scissor mechanism is also connected to the drive shaft (2) such that, with the rotation of the drive shaft (2) the position of the second scissor mechanism is modified.
[0126] Figure 5 shows the direction of movement of the cleaning elements towards the vehicle (a). In this specific embodiment, shown in figure 5, the scissor mechanism comprises a first movable support (10) inside the one located on the base (1), and said first movable support (10) has the possibility of displacement with respect to a second support (18) along the inside of said second support (18) .In this case, both the mobile extension arm (4) and the fixed extension arm (5) are displaced, both mounted on the support movable (10). Additionally, the mobile extension arm (4) moves along the guide (3), mounted on the movable support (10), with respect to the fixed extension arm (5) to carry out the folding or extension movement of the scissor mechanism.
[0128] The drive shaft (2) can comprise at least one threaded section on which a part (7) moves which, in the event that the drive shaft (2) comprises a threaded section then the part (7) would be a threaded part. The part (7) is anchored to the mobile extension arm (4) and to a mobile bushing (8) connected in turn to at least one support arm (15) tiltable with respect to said mobile bushing (8). The support arm (15) or support arms (15) are part of the second scissor mechanism and are attached at their other end to a secondary cleaning element (17) through a secondary cleaning element holder.
[0130] The tilting movement of the support arm (15) with respect to the movable hub (8) determines the increase or decrease of the diameter of the cleaning assembly. The secondary cleaning element support moves, moved by the support arm (15), in a direction transverse to the drive shaft (2), modifying the washing diameter.
[0132] Figure 6 shows the extreme diameters of the cleaning assembly (13). Thanks to the displacement of the secondary cleaning elements (17) with respect to the drive shaft (2) it is possible to see how the cleaning surface varies. In a preferred example of the invention, the device comprises, as represented in this figure 6, three secondary cleaning elements (17), but it could comprise only two of them. In this case, as the turn expands, an elliptical path would be circumscribed that is not the preferred one but that also works correctly.
[0133] The second scissor mechanism also comprises additional extension arms (14), hingedly attached to the support arms (15), and attached to a fixed hub (9) linked to the drive shaft (2).
[0135] Thus, when the drive (6) rotates the drive shaft (2), the part (7) (preferably a nut type part) moves along the threaded section causing expansion or folding of the first drive mechanism. scissors (moving the drive shaft (2) closer to or away from the ground). At the same time, the mobile bushing (8) that is connected to the part (7) is forced by the movement of the part (7), causing the articulated movement of the support arms (15), expanding or folding the second scissor mechanism (increasing or decreasing the diameter of the cleaning assembly (13)).
[0137] Therefore, with a single drive (6), preferably of the rotary type, the adaptation to the diameter of the wheel, the compensation of the height of the driving shaft (2) and the rotation of the cleaning assembly (13) are carried out for the rim cleaning.
[0139] Figure 7 shows a side view of the wheel cleaning device facing a large wheel and a small wheel. As can be seen, in both cases the position of the drive shaft (2) with respect to the ground and the diameter of the cleaning assembly (13) are regulated in a synchronized manner. In the figure on the left the device has been represented cleaning a maximum size rim (11) and in the figure on the right the device has been represented cleaning a minimum size rim (12).
[0141] Said figure 7 also represents the fixed height from the outer limit of the cleaning elements (17) to the floor (b) (independent of the cleaning area). Said height is independent of the diameter of the rubbing zone (that is to say, of the diameter of the cleaning assembly (13) at each moment) as observed for the two cases that have been represented. On the other hand, the height of the driving shaft corresponding to the position of maximum opening (c), of maximum diameter of the cleaning assembly, has been indicated; and the height of the driving shaft corresponding to the minimum opening position (c '), of the minimum diameter of the cleaning assembly.
[0142] At the end of the drive shaft (2) (the end opposite the end where the actuator (6) is located), there is a central cleaning element holder on which is mounted a central cleaning element (16) that it is preferably a brush, and more specifically the main brush of the cleaning assembly (13). The central cleaning element (16) always maintains its position with respect to the drive shaft (2), it simply rotates on itself, around said drive shaft (2).
[0144] Likewise, the device comprises a guide support hub that is arranged in an end section of the drive shaft (2). In said guide support hub, guide rods of the secondary cleaning element can be attached to orient the movement of the secondary cleaning elements (17) perpendicular to the drive axis (14). The guide holder may be attached to the central cleaning element holder (12).
[0146] The change in diameter of the cleaning assembly (13) allows the adaptation of the device to the diameter of the rim of the wheel to be cleaned. This size is also related to how far the center of the tire is from the ground. The device of the present invention modifies both measures in a synchronized and dependent manner to also control the additional loads that the device supports when it is used for cleaning large wheel rims.
[0148] The cleaning elements (16, 17) are friction cleaning elements, preferably brushes. The secondary cleaning elements (17) orbit around the main (central) cleaning element (16), and are arranged more or less separated from it depending on the diameter of the cleaning assembly (13) to be obtained (depending on the diameter of the wheel rim to be cleaned).

权利要求:
Claims (10)
[1]
1. Wheel washing device characterized in that it is adaptable to the size of the wheel rim to be cleaned depending on the distance from the center of the wheel to the ground and its diameter, and comprises:
-a base (1);
-a drive (6);
- a driving shaft (2) connected to the drive (6) that is connected to a central cleaning element (16) that is part of a cleaning assembly (13) that also has secondary cleaning elements (17);
-a first scissor mechanism, connected to the base (1) and linked to the drive shaft (2), configured to move said drive shaft (2) at least in a direction parallel to the ground, increasing or decreasing the distance between the drive shaft (2) and the ground such that it positions the drive axle (2) facing the center of the rim;
-a second scissor mechanism, connected to the secondary cleaning elements (17) and linked to the drive shaft (2), configured to increase or decrease the diameter of the cleaning assembly (13) by moving the secondary cleaning elements (17 ) in a direction transverse to the drive shaft (2);
where the first scissor mechanism and the second scissor mechanism move in a synchronized and dependent manner forced by the movement of the drive shaft (2).
[2]
2. Wheel washing device according to claim 1, wherein the first scissor mechanism comprises a fixed extension arm (5), joined at one end to a fixed point of the base (1) with the possibility of rotation, and a mobile extension arm (4) with an end movable along a guide (3) arranged in the base (1), where the fixed extension arm (5) and the mobile extension arm (4) are articulated to each other through a point of union and are linked to the drive shaft (2).
[3]
Wheel washing device according to claim 2, in which the driving axle (2) comprises at least one threaded section on which a part (7) to which the movable extension arm (4) is attached moves such that the displacement of said part (7) around the driving axis (2) determines a longitudinal movement of the mobile extension arm (4) with respect to the fixed extension arm (5) by means of which the driving axis (2) approaches or moves away from the ground .
[4]
Wheel cleaning device according to any one of the preceding claims, wherein the fixed extension arm (5) is hingedly connected to a drive support in which the drive (6) is located.
[5]
Wheel cleaning device according to any one of the preceding claims, wherein the second scissor mechanism comprises support arms (15) at the end of which there is a secondary cleaning element (17) and which are movably linked to the axle motor (2) with respect to which they have the possibility of tilting; and comprises additional extension arms (14) hingedly connected to the support arms (15) and fixedly linked to the drive shaft (2).
[6]
6. Wheel cleaning device according to claim 5, wherein the support arms are linked to the drive axle (2) through a movable hub (8) which is in turn attached to the nut (7) such that, when it is moves the nut (7) in the threaded section, moves the mobile bushing (8) with it, articulating the movement of the support arms (15), moving the secondary cleaning elements (17) in a direction transverse to the drive shaft (2) , modifying the diameter of the cleaning assembly (13).
[7]
Wheel cleaning device according to any one of claims 5 to 6, wherein the additional extension arms (14) are linked to the drive axle (2) through a fixed hub (9) attached to it.
[8]
Wheel cleaning device according to any one of the preceding claims, comprising a guide support hub arranged in an end section of the drive shaft (2).
[9]
Wheel cleaning device according to claim 8 comprising secondary cleaning element guide rods that are attached to the guide support hub and attached to secondary cleaning element supports (13).
[10]
Wheel cleaning device according to claim 8, in which the guide support is attached to a central cleaning element support (12) and to which the central cleaning element (16) is in turn attached.

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引用文献:

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申请号 | 申请日 | 专利标题

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ES201930905A|ES2819326B2|2019-10-14|2019-10-14|WHEEL WASHING DEVICE|ES201930905A| ES2819326B2|2019-10-14|2019-10-14|WHEEL WASHING DEVICE|

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EP20201452.8A| EP3808615A1|2019-10-14|2020-10-13|Device for washing wheels|