Quick-coupling device, particularly for applying a cover to a water closet

Abstract: The present invention relates to a quick-coupling device, particularly for applying a cover to a water closet, the device comprising pin elements (1) which can be fixed to a water closet and are provided with a shaped head (7) which can be detachably inserted in corresponding seats (10) formed on a cross-member (11) for joining the seat and the lid of the cover, means (20) for detachably locking the head in the seats being also provided.

Description: The present invention relates to a quick-coupling device, particularly for applying a cover to a water closet. It is known that the cover of a water closet or toilet bowl is currently connected by using threaded posts which pass through holes provided for this purpose on the edge of the water closet and are tightened by threaded bushes, wing nuts or the like. The bush engages the lower edge of the water closet and thus applies a traction which keeps the cover in contact with the water closet in a stable position. This solution, which allows to stably fix the cover to the water closet, however entails the drawback that it does not allow to rapidly remove the cover from the closet, since in order to remove the cover it is necessary to act on the threaded post to remove the previously described coupling. It is evident that this method does not allow to perform thorough cleaning, since it is practically impossible to remove the cover from the water closet every time by acting on the threaded means. This limitation is particularly felt in all public premises, such as hospitals, bars, hotels and so forth, where it would be necessary to frequently and quickly clean the water closet cover entirely and possibly sterilize it. DE-44 09 516 discloses a quick coupling deivce for applying a cover to a water closet as defined in the preamble of claim 1. The aim of the present invention is to solve the above problem, by providing a quick coupling device, particularly for applying a cover to a water closet, which allows to have a stable and safe connection of the cover although it is possible to separate the cover from the water closet with a very quick and simple operation that does not require action on the threaded posts. Within the scope of this aim, a particular object of the invention is to provide a quick-coupling device whichallows to perform coupling to the water closet and optional separation without having to resort to the use of tools of any kind. Another object of the present invention is to provide a coupling device which can be easily applied to any kind of water closet cover, always giving the greatest assurances of reliability and safety in use. Another object of the present invention is to provide a quick-coupling device which can be easily obtained starting from commonly commercially available elements and materials and is also competitive from a merely economical point of view. This aim, these objects, and others which will become apparent hereinafter are achieved by a quick-coupling device, particularly for applying a cover to a water closet, as defined in claim 1. Further characteristics and advantages of the present invention will become apparent from the description of a preferred but not exclusive embodiment of a quick-coupling device, particularly for applying a cover to a water closet, illustrated only by way of non-limitative example in the accompanying drawings, wherein: figure 1 is a schematic perspective view of the coupling device according to the invention, applied to a water closet; figure 2 is a perspective view of the coupling device; figure 3 is an exploded perspective view of the pin with the shaped head and of the cross-member that forms the seat and the locking element; figure 4 is a partially sectional exploded view of the locking pin with the cross-member forming the seat; figure 5 is a sectional view of the coupling between the cross-member and the pin; figure 6 is a longitudinal sectional view of the coupling between the pin and the cross-member; figures 7 and 8 are sectional views, taken along the plane VII-VII of figure 6, wherein the locking element is respectively in the disengagement position and in the engagement position; figure 9 is a schematic view of a different embodiment, wherein the cross-member has a square configuration; figure 10 is a view of a quick-coupling device wherein the locking elements are arranged between the hinges for connecting the seat to the lid; figure 11 is a schematic transverse sectional view of the cover, applied to the cross-member and connected to the pins; figure 12 is a view of a different embodiment, wherein the locking elements are integrated within the cross-member; figure 13 is a view of the slotted seat formed on the cross-member to achieve locking; figure 14 is an exploded perspective view of a different embodiment, wherein the pin element is plate-shaped; figure 15 is a sectional exploded view of the coupling elements; figure 16 is a sectional view of the coupling between the plate-shaped pin element and the cross-member; figure 17 is a sectional view, taken along the plane XVII-XVII of figure 16; figure 18 is an exploded perspective view of means for preventing the rotation of the slider with respect to the cross-member; figure 19 is a perspective view of the means of figure 18; figure 20 is a view of the means of figure 18, with the slider shown in cross-section; and figure 21 is a sectional view taken at the coupling pin. With reference to the above figures, the quick-coupling device, particularly for applying a cover to a water closet, according to the invention, comprises a pin element, generally designated by the reference numeral 1, which is rigidly coupled to a fixing plate 2 which can be connected, in a per se known manner, to a water closet 3 by means of the conventional fixing posts which rigidly connect it to the water closet. There is also provided a covering disk 5, from which the pin 1 protrudes. The pin can optionally be integrated directly in the threaded post and other fixings are likewise possible. The pin 1 ends with a shaped head 7 which is separated by a tapering groove 8 from the remaining part of the pin 1. The shaped head 7 can be inserted in seats 10 correspondingly provided on a cross-member 11, which supports the hinges 12 and 13 for respectively connecting the seat 14 and the lid 15 or in any case joins the seat and the lid to each other so that they can rotate with respect to each other. The shaped head 7 enters the seats by simple insertion and can be locked by means of locking elements constituted by sliders 20 which enter the groove 8 of the shaped head and thus prevent disengagement. In order to perform disengagement it is sufficient to shift the sliders 20, accordingly releasing the shaped head, which allows the disengagement of the cover from the water closet. In practice, the sliders 20 are provided by means of tubular elements having a slot that allows insertion in the tapering groove 8. In order to prevent the sliders 20 from rotating with respect to the cross-member, there is provided a radial ridge 22 or there are provided other spaced elements which, by fitting between the open flaps of the slider 20, prevent its rotation. Optionally, as shown schematically in figure 9, it is possible to provide a cross-member, designated by the reference numeral 11a, which has a substantially square or polygonal shape or is otherwise shaped so as to prevent the rotation of the slider; likewise, the slider 20a has a complementary shape without requiring guiding ridges, since rotation is in any case prevented. According to figures 12 and 13, it is possible to directly integrate the locking elements in the cross-member; it is in fact possible to provide on the cross-member slotted seats 25 having a wider portion 25a and a narrower portion 25b and arranged circumferentially on the cross-member. The end of the pin enters the wider portion but is smaller than the narrower portion, so that by turning the cross-member, by means of the optional protrusion 26b, said cross-member is coupled to the pin. In the example described in figures 1 to 9, the sliders are arranged inside the region delimited by the hinges 12 and 13, which are arranged side by side; optionally, as shown in the embodiment of figure 10, it is possible to provide the hinges, again designated by the reference numerals 12 and 13, so that they are spaced from one another, and the slider 20 can be arranged in the region delimited between the hinges. As shown in figures 14 to 17, the pin elements can have a plate-like shape, designated by the reference numeral 30, which is advantageously provided by an L-shaped bracket 31 which can be fixed in a per se known manner to the water closet. At the shaped end on the plate 30 there are provided protrusions 32 which are preferably arranged opposite to each other and can be inserted in shaped seats, designated by the reference numeral 10a, which allow to insert the end of the plate 30 in the cross-member 11 and to lock them by means of the slider 20, in a manner which is conceptually similar to what has been described above. The shape of the protrusions 32 can be changed extensively, without altering the concept that they are engaged by the slot of the slider 20 in order to stably couple the cross-member 11 to the pin element, which in thespecific case is constituted by the plate 30. With reference to figures 18 to 21, in order to better couple and guide the slider with respect to the cross-member, a cross-member, designated by the reference numeral 11a, is provided having a longitudinal slot 40 wherein a tab 41 is slidingly accommodated, said tab protruding radially towards the inside of the slider, designated by the reference numeral 20a. From the above description it is thus evident that the invention achieves the intended aim and objects and in particular the fact is stressed that the provision of a quick-coupling device, in which the cover can be fixed to the water closet simply by quickly shifting two sliders, allows to remove the cover from the water closet in order to perform cleaning and sterilization operations without having to extract the threaded posts that connect the pins to the water closet, as instead occurs in the devices according to the prior art. The above-described device is also particularly simple from a structural point of view and is such as to always ensure stable coupling. The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept. All the details may also be replaced with other technically equivalent elements. Thus, for example, the slider 20, instead of being movable, can be rotated about the cross-member 11 and can have a slot with a wider end which allows to extract the head 7 and a narrow part which engages the groove 8, preventing uncoupling. In practice, the materials employed, as well as the contingent shapes and dimensions, may be any according to requirements. Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims: A quick-coupling device, particularly for applying a cover to a water closet, comprising pin elements (1) which can be fixed to a water closet and are provided with a shaped head (7) which can be detachably inserted in corresponding seats (10) formed on transverse means for joining the seat (14) and the lid (15) of the water closet, means for detachably locking said head in said seats being also provided, characterized in that said transverse means comprise a single cross-member (11; 11a) and in that said locking means comprise sliders (20; 20a) which are slidably movable on said cross-member (11) between a locking position in which said sliders engage said shaped head (7) of each pin element (1) for locking said shaped heads in said seats of the cross-member, and a non-locking position in which said sliders (20) are arranged distally and non-engaging with said shaped heads (7) so that said shaped heads may be inserted into and removed from said seats (10). The quick-coupling device of claim 1, characterized in that each one of said pin elements (1) has a shaped head (7) separated by a groove (8) which tapers with respect to the remaining part of the body of the pin element (1). The quick-coupling device of claim 1, characterized in that said sliders (20) movable along said cross-member (11) are provided with edges which can be inserted in said groove. The quick-coupling device of claim 3, characterized in that said sliders (20) have a longitudinal slot delimited by said edges insertable in said groove. The quick-coupling device of claim 1, characterized in that it comprises means adapted to prevent the rotation of said sliders about said cross-member. The quick-coupling device of claim 5, characterized in that said means for preventing the rotation of said sliders are constituted by a radial ridge (22) which protrudes longitudinally on said cross-member (11) and can be inserted between the flaps of said slider that form said slot. The quick-coupling device of claim 5, characterized in that said rotation-preventing means are provided by means of a cross-member (11a) having a shaped transverse cross-section and a slider (20a) having a complementary shape. The quick-coupling device of claim 1, characterized in that it comprises, on said cross-member (11a), a longitudinal slot (40) wherein a tab (41) slidingly engages, said tab protruding towards the inside of said slider (20a). The quick-coupling device according claim 2, characterized in that said slider (20) is rotatable about the axis of said cross-member and has a slot (25) lying circumferentially and having a wider portion (25a), which allows the passage of said shaped head (7), and a narrower portion (25b), which can engage said tapered groove (8). The quick-coupling device according to claim 1, characterized in that said sliders (20) are arranged inside a region delimited by the hinges (12, 13) for connecting the seat (14) and the lid (15. The quick-coupling device according to one or more of the preceding claims, characterized in that each one of said sliders (20) is arranged in the region delimited between a hinge for connecting the seat (14) and the hinge for connecting the lid (15). The quick-coupling device according to one or more of the preceding claims, characterized in that said elements for removably locking said head in said seats are provided directly by said cross-member (11), which can rotate about its own axis and has seats which are slotted for their engagement with the tapered groove (8) of said head (7) through the rotation of said cross-member. The quick-coupling device according to one or more of the preceding claims, characterized in that said pin elements (1) have a plate-like shape (30) with protrusions (32) located proximate to the end which can be detachably accommodated at corresponding shaped seats (10a) formed on said connecting cross-member (11) and engageable by said locking elements. The quick-coupling device according to claim 13, characterized in that said protrusions (32) are formed on mutually opposite faces of said plate (30).

Inventors: CAVAGNA LIVIO, CAVAGNA, LIVIO
Applicants: CAVAGNA & SIPEX INTERNAT S R L, CAVAGNA & SIPEX INTERNATIONAL S.R.L.
Application year: 1997
Main classification: A47K13
IPC codes: A47K13, F16B21, F16B7