DE3936628A1 - Water-closet tank flushing mechanism - has valve hinging via driving fork on rocker beam - Google Patents

Abstract

The flushing mechanism for the tank of a WC allows external operation by a hydropneumatic system, and, without modification, also internal manual/mechanical operation. Flushing can be interrupted by a changeover system taking account of the different effort and amount of movement necessary for flushing and interruption, using the same operating button. The flushing valve (2a) hinges via the driving fork (2) on the rocker beam (6a), on which left- and right-hand pendulum driving members with arrester forks (7) hinge, their pivoting movement being limited by restrictors (7c) and pins (7d). Driving pins (4b) cause the release pressure to act on the right-hand end of the beam and the interruption pressure on the left-hand end. The control mechanism is above the water level, avoiding faulty operation caused by deposits. USE/ADVANTAGE - WC flushing system reduces pressure required on operating button.

Description

The invention relates to a flush trigger mechanism for toilet water boxes with the combined possibility of triggering this externally via a transmitter-receiver air / hydro system without retrofitting, also internally manually and mechanically, and the possibility of interruption by means of a changer system, which corresponds to the different effort required when flushing and the interruption takes into account to achieve with the same release button, is characterized in that the flushing valve ( 2 a) is connected on one side to the balance beam ( 6 a) via the valve driving fork ( 2 b), which causes the flushing trigger pressure to be applied to the one side and the pressure to interrupt the flushing is directed against the other side of the balance beam in order to move the flushing valve up or down by this pendulum movement.

Flush release mechanism for toilet water boxes according to the generic term of Claim 1, should be mechanically uncomplicated, inexpensive to manufacture, trouble-free and work noiseless, corrosion-resistant and water-saving.

Furthermore, the requirement of the operating point also arises out of the For example in hospitals, homes for the disabled and old people's homes place, or interpose compensation mechanisms to trigger the flush for example with the help of the toilet seat, the door or by means of step contacts ensure.

In order to meet the need to save water, that the entire contents of a toilet cistern drain if not necessary there is.

It is known that there is a changer system based on a pan bar arm and a pressure piece, which with the release button / lever handle is articulated, on which a resiliently pivotable shaft located. This resilient shaft alternately to the right or left of the Axis of rotation engages and with this movement the drain valve up or down emotional. This is done alternately with a system with almost the same force and away.  

The power arm has a cone for power steering in the middle, but in the axis area, which carries out the pivoting movement of the power arm.

The resilient pressure piece is centered exactly on the center of the axis of the power arm. Due to the 2 valve and power arm positions - above or below - it will Pressure piece by means of the resilient shaft through this cone always on the steered lowered side of the power arm.

The resilient shaft of the pressure piece by bending the resulting one curved deflection takes place on the way to the starting position in his spring back unstressed position (stretched shape).

Repeated pressure on the rinse trigger button therefore directs the springy Use this cone on the lowered side of the power arm and that The flushing valve is lowered and the flushing is interrupted. This technique has the disadvantage that an external or combined trigger button placement is not is possible. Furthermore, this technology requires a relatively large installation space, which is only available in certain toilet box designs. An eccentric on Toilet box lid arranged button operation is technically very complex and has lower utility value.

The object of the invention is therefore to provide a flushing trigger mechanism the possible uses such as external triggering based on the encoder-slave principle using air bellows / cylinders or internally placed on the toilet cistern Knob lever / push button with the same transmission technology or purely manual to design mechanically, in addition, the flush interruption with less and short-term pressure intensity of the release button or the like accomplished can be.

The objective of this patent is very suitable for this range of applications, because this change-over principle takes into account the differently positioned force moments of the pneumatics and the manual-mechanical as well as the different force moments when flushing or interruption. The rocker arm ( 4 a) acts with its driving pins ( 4 b), differentiated from the pivot point, with different forces. The driver pin ( 4 b) closest to the pivot point of the rocker arm acts with greater force due to the shorter lever, which is also required to lift the valve.

The purging is interrupted by the driver pin, which is further from the pivot point of the rocker arm ( 4 a). Because lowering the purge valve requires far less force, this design is extremely effective. The resulting longer arm (rocker arm 4 a) requires a shorter path when the button is pressed, thus also transmitting lower forces.

The arrangement of the pendulum lever suspension on the balance beam is useful in two ways. On the one hand, this results in a significantly lower pressure actuation of the flush trigger button, but also the requirement on the opposite side of the balance bar ( 6 a) to raise the pendulum driver on the catch fork ( 7 ) in order to lower the flush valve and to cancel the flush.

The drain flush valve has the special feature that the closing pressure is already out Tightness is greater than the forces that cause the valve to lower body. In this case, only the buoyancy of the To overcome valve stem laid swimmer.

This object is achieved in that the base plate ( 3 a) in one piece, the rocker arm mounting ( 4 ), the guide grooves ( 4 d), the guide groove plate ( 5 ), the balance beam bearing ( 6 ) and the mounting flange ( 8 a) and the air connection ( 8 b) contains or bears.

The balance beam ( 6 a) with the pendulum driver ( 7 ) - according to Fig. 1 on the left in the lowered position - thus also the valve ( 2-2 a). Before triggering the flush. The water in the cistern is required. The rocker arm mounted on one side ( 4 a) is raised in the event of flushing either by the slave air bellows / cylinder system ( 8 ) or via the hand release sliding piece ( 40 b) - connecting link ( 40 a) - extension arm ( 40 ). The left pendulum driver ( 7 ) is raised via its catch fork by the driver pin ( 4 b). Similarly, the valve ( 2-2 a) connected via the driving fork ( 2 b). The lifting height achieved by the release mechanism is approx. 60-75% - the remaining distance is caused by the buoyancy of the float placed around the valve stem ( 2 a).

Thus, the Pendelmitnehmer (7) is pulled further upward, and the guide pin (7 b) of the catch fork (7) leaves the guide groove (5.1). The pendulum driver suspension is designed as a rotary motion limiter ( 7 c) with the sector recess. The limiting pin ( 7 d) only allows a predetermined rotational movement of the pendulum driver. The result is a deflection of the pendulum drive spring shaft. This preload causes the guide pin on the catch fork ( 7 ) to be snapped into the guide groove ( 5.2 ).

This lifting phase reciprocally causes the same mechanical sequence on the right-hand side as shown in Fig. 1. The pendulum driver is in the guide groove ( 5.3 ) before tripping - it is lowered and is pressed into the guide groove ( 5.4 ) by the spring shaft ( 7 ). The rocker arm is pulled down using, among other things, the return spring ( 4 c) or a weight ( 4 c), the second driver pin ( 4 b) engaging in the catch fork of the now lowered right pendulum driver ( 7 ). Repeated actuation of the triggering techniques described now raises the right side of the balance beam ( 6 a) by means of the rocker arm ( 4 a) and thus pushes the flushing valve overcoming the buoyancy forces against the sealing surface of the drain opening to interrupt the flushing water flow. This positively guided movement only requires 65-75% of the total stroke, since the remaining distance is supported by the remaining water pressure. Now the balance beam is back in the starting position.

Variant B shows a further detailed solution on the pendulum driver. The spring shank (61) can just as well be rigid when the guide pins (a 61) pressed (4 b) in the catch forks (7) by means of spring elements at the Führungsnutenden in the respective Referenzführungsnuten. The spring elements are placed in predetermined sockets ( 61 b). The rotary motion limiter ( 7 c) with the limiting pins ( 7 d) are omitted.

Patent description variant II

This object is achieved in variant II by a component carrier ( 3 c) on the water tank ( 1 ) or advantageously on the drain valve bell ( 3 ) is fastened by means of clamping pins or screw.

The component carrier ( 3 c) has at right angles to the valve axis ( 3 a) material in one piece at a predetermined vertical distance 2 mounting flanges ( 3 c), which parallel to the valve axis ( 3 a) at a distance from the driving arm ( 3 b) Air bellows have mounting flanges for the bellows and connections A + B.

The control part ( 6 ), which can be pivoted in the valve body ( 5 ) by means of a holding rubber ( 6 c), which wraps around the axle halves of the control part and is hung into the eyelets on the back of the component carrier, has a congruent sealing surface ( 6 d).

The control part ( 6 ) is positively controlled via its driver fork lever - driver pin of the valve driver arm ( 3 b) - valve stem ( 3 a). The clearance between the fork lever tines ( 6 ) serves for the free movement of the valve ( 3 a) during the upward remaining distance through the water suction.

The toilet water tank is filled, the valve ( 3 a) is closed, the valve driver arm ( 3 b) is at the bottom.

If flushing is triggered via a sensor air bellows, the displaced air reaches the control section ( 6 ) via the air connection ( 6 b). The air passes through the air distribution duct ( 6 e) into 2 directional ducts which have matching contact points with the ducts ( 5 a + 5 d) in the valve body ( 5 ). Via the duct ( 5 a) - duct ( 5 d) is blocked by the one-way valve on the bypass duct in the pressure phase) - the air passes through the connection (A) to the slave air bladder (A), which expands. This change in volume is transferred via the valve driver arm ( 3 b) to the valve ( 3 a), which rises and releases the flushing water flow. The float built into the valve stem lifts the valve up to its upper end position and, in this way, causes the control part to be rotated by means of the driving fork ( 6 ) to its upper control position. Now the channels ( 5 b + 5 c) are in contact with the channels ( 6 e) of the control section. Now the air exchange connection takes place from the bellows (A) to the transmitter bellows of the release button in order to bring them both back to their starting positions.

The air shift is reversed. The air filling of the slave bellows (A) passes through the channel ( 5 c) - the one-way check valve ( 5 c) back into the bellows of the trigger mechanism. When an interruption in flushing is initiated, the air shifts from the transmitter via ( 6 b - 6 d) to the channels ( 5 b + 5 c). Channel 5 b leads to the slave bellows (B), which lowers the valve ( 3 a) via the valve driver arm ( 3 b).
(Channel 5 c is blocked via the one-way check valve ( 5 c)).

The remaining distance is promoted by means of the water suction, which causes a further switchover of the control part ( 6 ). The rinse is interrupted. Now the air distribution channels ( 6 e) are again in contact with the channels ( 5 a + 5 d). The air return of the slave bellows (B) to the sensor bellows of the release mechanism takes place via the channel ( 5 d), which is released via the one-way check valve. The starting position has been reached.

Claims (13)

1.Rinse trigger mechanism for toilet water tanks with the combined possibility of triggering them externally via a transmitter-receiver air-hydraulic cylinder system, as well as internally manually / mechanically without retrofitting, and the possibility of flush interruption by means of a changer system which enables the different power and travel expenses in the flush triggering and the flush interruption takes into account to achieve with the same trigger button, characterized in that the flush valve ( 2 a) via the valve driver fork ( 2 ) is pivotally connected on one side to the balance beam ( 6 a) on which left and on the right a pendulum driver with the associated catch forks ( 7 ) by the rotary motion limiter ( 7 c) and pins ( 7 d) are suspended within a predetermined rotary motion. The driver pins ( 4 b) cause the flushing pressure to be directed to the right side and the pressure to interrupt the flushing against the left side of the balance beam ( 6 a), in order to move the flushing valve with greater power delivery with a smaller but short-stroke power delivery through this pendulum movement . The control technology is arranged above the water surface in order to avoid malfunctions due to deposits from the water. 2. Flush release mechanism for toilet water tanks according to claim 1, characterized in that a slave air bellows: hydraulic cylinder, the flush valve ( 2 ) is raised via hose or pipe by means of air displacement and lowered by the same line by a repeated air displacement this again and thus the Water flow is stopped. That means interrupting rinsing. 3. flushing trigger mechanism for toilet water boxes according to claim 1 to 2, characterized characterized that this can be operated externally, that is, any Locations of the encoder bellows / cylinder can be selected. Furthermore, thus an automatic flush triggering over various sanitary conditions (Toilet seat; door or foot contact) can be achieved.   4. flushing mechanism for toilet water boxes according to claim 1 to 3, characterized in that the base plate ( 3 a) on the drain valve bell ( 2 ) can be fastened by means of shaped pins or screws. On the base plate ( 3 a) there is one piece of material with the balance beam mounting ( 6 ), the guide groove plate ( 5 ), the rocker arm mounting ( 4 ), and the guide grooves ( 4 d) for the manual release slide ( 4 c) and the Air hose connection ( 8 b) with the mounting flange ( 8 a) for the slave air bellows ( 8 ). In order to get the cover ( 3 ) adhering well around the base plate edge ( 3 a), the step fold of this plate edge is slightly dovetail-shaped. 5. flushing mechanism for toilet water boxes according to claim 1 to 4, characterized in that in the storage ( 4 ) pivotally mounted the double-armed graceful rocker arm ( 4 a) in the direction of the air bellows ( 8 ) engages around the valve stem ( 2 a), and one Includes plate form as Luftbald contact surface. Furthermore, the driver pins ( 4 b) are arranged so that the catch forks of the pendulum driver ( 7 ) snap well into the respective end positions to ensure that they are taken along.
The upward pointing arm (40) is in variant B by the manual release push piece (4 c) which can be installed optionally, knee-lever-like manner (a 40) displaced over the connecting member, which pivotal movement of the rocker lever (4 a) results with which the respective upward or downward movement of the valve ( 2 + 2 a) by means of the pendulum driver ( 7 ) on the balance beam ( 6 a) and the valve driver fork ( 2 b) on the valve stem ( 2 a). 6. flushing mechanism for toilet water tanks according to claim 1 to 5, characterized in that in variant A the lifting of the rocker arm ( 4 a) is achieved by means of the slave-transmitter system by pressure shift. This upward movement of the rocker arm is steered by the pendulum drivers once to the left and once to the right of the axis of rotation of the balance beam ( 6 a), which thereby makes a limited right or left turn, and shows different moments of force.
The flushing water drain valve stem ( 2 a) connected via the valve driver fork ( 2 b), which protrudes into the driver pin of the balance beam ( 6 a), exerts a positive control on this by changing its position (up and down). Since the balance beam ( 6 a) is the carrier of the pendulum drivers ( 7 ), the movement is transmitted synchronously to them, which is reflected in a downward or upward movement of the pendulum drivers ( 7 ) and the valve body ( 2 a). 7. flushing trigger mechanism for toilet water boxes according to claim 1 to 6, characterized in that the pendulum drivers ( 7 ) are each guided in 2 one-way guide grooves ( 5.1 to 5.4 ) such that these ( 7 ) the upward movement in the associated guide groove ( 5.1 or 5.3 ) and the downward movement in the second guide groove ( 5.2 or 5.4 ) running parallel to it.
The guide grooves ( 5.1 or 5.3 ) for the upward movement of the pendulum driving forks ( 7 ) run in the same path as the driving pins of the rocker arm ( 4 b), while the guide grooves for the downward movements of ( 7 ) parallel to the radial movement paths or guide grooves run, which has the consequence that the respective rocker arm driver pin ( 4 b) is only in a climbing movement in the engagement of one of the catch forks of the respective pendulum driver ( 7 ) (left or right of the balance beam bearing). This ensures that the rocker arm ( 4 a) is raised once on the right and once on the left. 8. flushing mechanism for toilet water boxes according to claim 1 to 7, characterized in that the routing of the catch forks ( 7 ) takes place in such a way that the pendulum driver suspension axes are designed as a rotary motion limiter ( 7 c). These also perform a rotary movement when the balance beam swivels. These are restricted by the rotation movement limitation pins ( 7 d) by means of the recessed sectors in the rotation movement. Due to the restriction of rotation of the pendulum driver ( 7 ) controlled by this ( 7 c), the spring shaft ( 7 a) must bend in order to be able to follow the required vertical path along the guide grooves. The preload achieved in this way causes the catch fork guide pins to snap from the respective guide groove from 5.1 to 5.2 and 5.3 to 5.4 and reciprocally. 9. flushing mechanism for toilet water boxes according to claim 1 to 7, characterized in that the variant B has no pendulum drivers with spring shaft and rotary limiter.
The pendulum drivers have a rigid shaft ( 61 ). The catch forks are guided by inserted spring elements ( 61 a) at the respective guide groove ends ( 61 b) into the guide groove arranged in parallel, as in variant A. All components are preferably made of plastic. They are cheap and corrosion resistant. Variant II 10. flushing mechanism for toilet water boxes, characterized in that the raising and lowering of the valve ( 3 a) is achieved in alternation via 2 slave air bellows / cylinders. A component carrier ( 3 c), which is also connected to the drain valve bell ( 1 a) by means of pins or screws, has at right angles from the valve axis ( 3 a) 2 mounting flanges for the slave air bellows / cylinders parallel vertically at a distance. The upper flange carries the slave air bellows (B) to interrupt the flushing, the lower flange carries the slave air bellows (A) to trigger the flushing. The component carrier ( 3 c) can also be attached to the edge of the water tank. 11. Flush release mechanism for toilet water boxes according to claim 10, characterized in that the valve body ( 5 ) embedded in the component carrier ( 3 c) air guide channels which on the one hand slot-shaped in the semicircular sealing surface ( 6 d) and on the other hand at the air connections (A + B) end up. The air control part ( 6 ), into which the air connection ( 6 a) from the encoder opens on one side, distributes this air through the introduced air slots ( 6 e) by twisting it onto the channels 5 a + 5 d and lets the purge air through the one-way check valves ( 5 c and 5 d) flow back to vent the respective slave bellows again and to vent the sensor bellows so that they can resume their original forms. 12. flushing mechanism for toilet water boxes according to claim 10 + 11, characterized in that the driver fork lever connected to the control part ( 6 ) by a fork-shaped arm ( 6 ) by means of a pin on the valve driver arm ( 3 b) according to the respective valve position is moved up or down. It is triggered by the sensor-slave air bellows system. The air bellows (A) lifts the valve ( 3 a) via the driving arm ( 3 b). The buoyancy body around the valve stem supports the ascent of the valve to its end position.
The pin on the valve driver arm ( 3 b) moves the control fork on the air control part ( 6 ) upwards with a delay. In order to ensure that the slave bellows A is filled up, the fork ensures delayed driving of the control part ( 6 ) due to the selected tine spacing. The automatic rise of the valve ( 3 a) by means of the buoyancy body switches the control part ( 6 ) to the air inlet of the bellows (B) via the driving fork. At the same time, a one-way air connection to the previously filled bellows (A) is again created via the one-way shut-off valve (A) for the purpose of ventilation and sensor bellows return. 13. Spülauslösemechanismus for toilet water boxes according to claim 10 to 12, characterized in that in the case of an intentional flushing process now the Nehmer- air bellows (B) that experiences a re-encoder operation of an extent which (b 3) over the Ventilmitnehmerarm the drain valve (3 a) lowers and thus stops the water drainage. For the purpose of venting the slave air bellows (A) and the sensor feedback, the same happens as for the purge trigger (lift the valve).
In order to only let the air flow into the bellows (B), the respective valve ball of the one-way check valve A or B blocks the air supply via the ventilation passage to bellows A or B.