SLOW CLOSURE MECHANISM FOR TOILET COVERS Technical Field

Present invention relates to systems for ensuring slow closure of toilet covers. Prior Art

While conventional toilet covers are being closed, the cover closes quickly by influence of gravity without slowing down and makes disturbing noise or user should hold and close the cover slowly. The toilet cover is closed automatically in controlled manner thanks to various systems placed in hinge after the covers make first movement, and thus, no further action will be needed for slow closure of the cover. Therefore, the user contacts with toilet cover for less time.

One of the systems developed for slow closure of the toilet cover is disclosed in the patent document No WO2009132589 A1 in prior art. In the slow closure mechanism disclosed in said document, there are one shell and one shaft received by said shell. There is provided one u-channel on that shaft. There are provided holes on unevenly long lateral walls of this channel. In addition, there is a metal bar at the end of shaft in order to mount said shaft into the shell. There is one oil passage channel on the base set on the other end of the shaft without metal bar. The end with metal bar of the shaft is mounted to the shell by means of sealing, sealing retaining plate and compressing member. The other side of the shaft is mounted to the shell by a sealing. There is placed a one-way component into the u-channel in the shaft and this component has oil hole thereon and can move within said channel. There is one blocking wall within the shell. Therefore, when the shaft is placed into the shell, u-channel on the shaft and blocking wall in the shell form a four-cell structure. The shell is fixed to the hinge and the shaft can rotate within the shell (2) during opening/closure of the cover and thus, width of these cells can change. During closure of the cover, oil passage is ensured between the oil passage hole on the base set of the shaft and the oil channel on the shell and thus, the cover can be closed slowly. Brief Disclosure of the Invention

Present invention discloses a slow closure mechanism developed for the toilet covers. Said system comprises at least one main shell into which pre-determined amount of fluid having a certain viscosity is added; at least one shaft shell which is placed in said main shell, one side of which has such a width to contact with inner surface of said shell, which has lower width on its other side than the side contacting with inner surface of the shell; at least four lateral walls so as to be corresponding couples with respect to each other and at least one shaft comprising at least two channels created by these corresponding lateral walls; at least two projections extending into the shell from inner surface of the shell; at least one hole provided on each corresponding lateral walls, the holes being positioned in different positions in which they are non-concentric with respect to each other ; at least one space provided on the shaft shell, which controls fluid passage according to position taken by said projection and the depth of which increases from its one side towards other side; at least one plate part, which is placed in said channels each and comprises a hole concentric with the hole on one of the corresponding lateral walls; at least one hollow , comprising hole concentric with said plate part, provided on both sides of the lateral walls; at least one chamber in which there is fluid between at least one of the corresponding lateral walls on the shaft shell and one of said projections while the cover is in closed position; and another chamber which is provided between the other of the corresponding lateral walls and the other projection and which is formed during the opening of the cover. When the shaft is placed in the shell, at least one of the corresponding lateral walls on the shaft contacts said projection. Following the opening of the cover, the lateral wall ensures fluid passage between the chambers on both sides of the channel (first chamber and the other chamber formed as a result of opening movement of the cover) by means of the holes thereon. The cover is ensured to close slowly by said fluid passage.

Objective of the Invention An aim of the invention is to develop a system which ensures that the toilet cover is closed slowly.

Another aim of the invention is to develop a system which ensures slow closure of the toilet cover by means of movement of the fluid added into the shell in the system. Another aim of the invention is to develop a system which ensures slow opening of the toilet cover during opening process and slow closure of the toilet cover during closing process. A further aim of the invention is to create an easy and cheap to produce, reliable slow closure system.

Description of Figures

The system of the invention is illustrated in the annexed figures, wherein;

Figure 1 is perspective view of the slow closure system before mounting.

Figure 2 is perspective view of the shaft.

Figure 3 is side sectional view of the shaft.

Figure 4 is perspective view of the shaft placed into the main shell.

Figure 5 is another perspective view of the shaft placed into the main shell.

Figure 6 is side sectional view of the shaft placed into the main shell.

Figure 7 is front view of the C-C cross section of the view shown in figure 6.

Figure 8 is view of the sectional view illustrated in figure 7 while the cover is in open position.

All the parts illustrated in figures are individually assigned a reference numeral and the corresponding terms of these numbers are listed below.

Main shell (A)

Shaft (B)

Inner surface (Α')

Sealing element (1 )

Plate part (2)

Bedding element (3)

Bedding upper part (4)

Distance ring (5)

Clamping element (6)

Slot (7)

Channel (8)

Lateral Wall (9, 9')

Hole (10, 16) Shaft shell (1 1 )

Space (12)

Nut (13)

Projection (14)

Chamber (15, 15')

Disclosure of Invention

Figure 1 illustrates view of main parts of the slow closure system for toilet covers before they are assembled. Said system comprises at least one main shell (A) and at least one shaft (B), which is placed in said main shell (A). One side of the shaft (B) has such a width to contact with inner surface (Α') of the shell (A) and width of the other side called shaft shell (1 1 ) is much lower. There are provided at least four lateral walls (9, 9') so as to correspond each other bilaterally on said shaft shell (1 1 ), and at least two channels (8) formed by said corresponding lateral walls (9, 9'). While the shaft (B) is placed into the main shell (A), at least one plate part (2) having at least one hole

(10) thereon is placed into said channels (8), and also a fluid having a certain viscosity (oil can be example for said fluid) is added into the main shell (A) in pre-determined amount. The shaft (B) is mounted to the shell (A) by means of at least one sealing element (1 ) which is placed in at least one slot (7) on shaft's (B) side contacting with inner surface (Α') of the shell (A) (o-ring can be example for the sealing element (1 )), at least one clamping element (6) which is provided on shaft's (B) other side not contacting with said inner surface (Α') (screw, bolt can be example for the clamping element (6)), at least one other sealing element (1 ), at least one bedding element (3), at least one bedding upper part (4), at least one distance ring (5) and at least one nut (13). As illustrated in exemplary embodiment given in figures, the clamping element (6) can be fixed to shaft shell (1 1 ) or it may have a structure mountable to the shaft shell

(1 1 ) afterwards. Figure 2 shows detailed perspective view of the shaft (B) and Figure 3 shows side sectional view of said view. There is provided on the shaft shell (1 1 ) at least one space

(12) , the depth of which increases from its one side towards other side and which allows the fluid passage. Preferably, the side of said space (12) having greater depth is integrated with lateral walls (9') and it has such a rift structure that its depth decreases from said lateral wall (9') to other lateral wall (9) provided on other side of the shaft shell (1 ). Therefore, the cover is ensured to move slowly up to a certain position during opening and closure processes. There are at least one hole (10) on one (9') of the lateral walls (9, 9') provided on the shaft shell (1 1 ) and forming channel (8), and at least two holes (10, 16) on other lateral wall (9). The holes (10) provided on the corresponding lateral walls (9, 9') forming the channel (8) are not concentric and in different positions with respect to each other. The position of hole (10) on the plate part (2) is concentric with the hole (10) on one (9) of said corresponding walls (9, 9') forming the channel (8) and also, is in different position from the hole (10) on the other lateral wall (9'). Preferably, the holes (10) provided on the lateral walls (9') comprising hole (10) not concentric with plate part (2) are in elliptical form. Thus, resistance of lateral wall (9') comprising elliptical hole (10) is increased against the fluid having a certain viscosity.

Figure 4 and 5 shows perspective view of the shaft placed into the shell and Figure 6 shows side sectional view of said view. When the shaft (B) is placed into the shell (A), at least two projections (14), which extend from the inner surface (Α') of the shell into of the shell (A), contact with the shaft shell (1 1 ). The lateral walls (9, 9') provided on the shaft shell (1 1 ) contact with the inner surface (Α') of the shell (A) from one side. Figure 7 shows front view of the C-C section of side sectional view of the mounted system illustrated in figure 6. After the shaft (B) is placed into the shell (A), at least two chambers (15) having fluid therein are formed between said projection (14) and the lateral walls (9') on which there is hole (10) not concentric with plate part (2). In figure 7, the position of the shaft (B) and the shell (A) with respect to each other is the position taken by the system while the cover (not shown in figures) is in closed position. In said position, the lateral walls (9), on which there is hole (10) concentric with the plate part (2), contact with said projections (14). Moreover, in said position, the plate part (2) within one of the channels (8) leans on the lateral wall (9') on which there is hole (10) not concentric with the plate part (2), and the plate part (2) within the other channel (8) leans on the lateral wall (9) on which there is hole (10) concentric with the plate part (2).

The cover can be in connection with the shell (A) and the shaft (B); the shell (A) or the shaft (B) can move as a result of movement of the cover. For example, in case the cover is in connection with the shell (A), the shell (A) rotates in direction of "X" (in clockwise) as shown in Figure 7 when the cover begins to be opened. By the movement of the shell (A), fluid within said chamber (15) starts moving in direction of "X" and passes through the holes (10) on the lateral walls (9') forming said chamber (15). The holes (10) on the lateral walls (9') are preferably elliptical and enhance resistance of said lateral walls (9') against the fluid. The projection (14), which comes into contact with the lateral walls (9) by opening movement of the cover, moves away from the lateral walls (9) and thus, it creates a chamber (15') between said lateral wall

(9) and said projection (14), and then the positions of shaft (B) and the shell (A) with respect to each other takes the position illustrated in figure 8. Since, in one of the channels (8) the plate part (2) leans on the lateral wall (9) on which there is hole (10) concentric with plate part (2), fluid moving by means of the projection (14) as a result of movement of cover passes through said channel (8) easily and is transmitted into said chamber (15) created by lateral wall (9) of said channel (8). Since the plate part (2) in other channel (8) leans on the lateral wall (9') on which there is hole (10) not concentric with plate part (2), fluid within the chamber (15) between said lateral wall (9') and the projection (14) therefore ensures the plate parts (2) to move towards the other lateral wall (9) by exerting force on said part (2) while passing through the hole

(10) on said wall (9'). . As a result of movement of the plate part (2), fluid passes through the hole (10) on the plate part (2) and flows slowly into new chamber (15') formed between said wall (9) and the projection (14), and thus enabling the cover to move slowly. In other words, in the system given as example in figure 8, fluid flows from the "a" chamber (15) into the "b" chamber (15') formed as a result of movement of the shell (A), from the "c" chamber (15) into the "d" chamber (15') formed as a result of movement of the shell (A) by means of hole (10) provided on the lateral wall (9) of the channel (8). Since the projection (14) is in connection with the shaft shell (1 1 ), fluid passage is not formed or formed as leakage between the chambers (15, 15') (for example "b" and "c" chambers and also "a" and "d" chambers) provided on both sides of the projection (14). Fluid movement between chambers (15, 15') on both sides of the channels (8) continues until the projection (14) reaches the space (12) on the shaft shell (1 1 ) and ensures that the cover moves slowly. When the projection (14) reaches the space (12), chambers on both sides of the projections (14) are connected to each other by means of said space (12) on the shaft shell (1 1 ) and fluid passage is ensured between said chambers. In other words, when the projection (14) reaches said space (12), connection is established between the "c" chamber (15) and "b" chamber formed as a result of movement of shell (A) by means of space (12) in the system given as example in figure 8, and also fluid movement is ensured between these two chambers (15, 15'). Since depth of said space (12) increases from its one side towards its other side, the section through which the fluid passes also becomes wider while the cover is being opened, and then during opening process the fluid moves between the chambers formed on both sides of the projections (14) by gaining momentum. Therefore, movement of fluid increases and accelerates and also, the cover is opened easily by moving quickly. During closure of the cover, the system disclosed above is carried out in reverse way. In other words, while the cover is closed, it moves in direction of "-X" and fluid passage is ensured between chambers (15, 15') on both sides of the projection (14), and between chambers (15, 15') on both sides of the channel (8) in direction of "-X". This movement of fluid moves the plate part (2), which is moved towards the lateral wall (9) having hole (10) concentric with the plate part (2) during opening process of the cover, towards the lateral wall (9') which is provided at opposite of said wall (9) and has hole (10) not concentric with said part (2). In addition, the plate part (2), which is provided in the other channel (8) and does not move during the opening process of the cover, moves towards the corresponding lateral wall (9') by means of fluid passing through the other hole (16) provided on the lateral wall (9) having the hole (10) concentric with said plate part (2) and leaned on by said plate part (2). Closing movement of the cover is slowed to some extent due to movement of plate parts (2) within the channels (8). During closure of the cover, depth variable structure of the space (12) ensures a gradually slowing fluid passage through the chambers (15, 15') between the projections (14)until the projections (14) cross the space (12) on the shaft shell (1 1 ). Said projection (14) within the shell (A) moving by movement of cover crosses the space (12) on the shaft shell (1 1 ) and starts contacting with the shaft shell (1 1 ), and thus, the chambers (15, 15') on both sides of the projection (14) are disconnected and the fluid movement stops. Therefore, fluid passage is carried out between the chambers (15, 15') on both sides of the channels (8) by means of holes (10) provided on the lateral walls (9, 9'). It is ensured that the cover is closes slowly since the fluid passage between the chambers (15, 15') is lower.