Patent ID: 6151729
Filing Date: 2000-11-28
Classification: B05B

Abstract:
A rinsing shower head for a kitchen sink, said rinsing shower head comprising a shower head, a small seal ring, a deformable cap, a press button board, a sealing hoop, a flexible cover, a switch valve, a valve shaft, a discharge head, a large seal ring, a bubble generator and an outlet cap; wherein said rinsing shower head has a slightly curved tubular body and has a front water discharge portion and a rear holding handle portion;said front water discharge portion is of a two-stage structure having a small front end provided with outer locking threads;at the rear end of the water discharge portion is disposed a a passage hole for mounting of the valve shaft, the passage hole having a large diametered section and a small diametered section;on a back of said rinsing shower head is disposed a recessed oval-shaped control chamber in which an abutment groove is located;said deformable cap is of a short circular disc shape having a central activation hole; said press button board has a press section and a driving section having an oval hole defined thereon;to the opposite side of said press section and at the middle position between said driving section and said press section is disposed a pivot projection;said switch valve is a two-staged cylinder having a long large diametered section and a short small diametered section;at each edge of the long large diametered section is disposed a seal ring;a two-staged water inlet passage extends from the short small diametered section into the large diametered section of said switch valve;a plurality of arc shaped outlet slot passages are defined on a vertical face at the junction of the small diametered section and the large diametered section of said switch valve;an arc-shaped bypass communicating with the outlet slots of said switch valve is disposed at the external end of the large diametered section of said switch valve;a fixing hole is located at an end face of the large diametered section of said switch valve;a plurality of evenly and radially distributed water outlet holes are disposed around said fixing hole;said fixing hole and said water outlet holes are in communication with the water inlet passage of said switch valve;a water inlet hole extends into the large diametered section of said switch valve from the external peripheral surface thereof and communicates with said water inlet passage;said valve shaft is an elongated rod having a ball-shaped driving end at a rear end; and a front end is provided with a conic dodge head;a bias spring is disposed at a front section of said valve shaft;at each end of said bias spring is disposed a sealing bulge;said discharge head is a two-stage cylinder including a small diametered central tube section and a large diametered disc section having a central location hole with four evenly distributed discharge holes disposed around said location hole;in communication with said central tube section are said central location hole and said discharge holes;said outlet cap is a tubular cap having a large receiving, cavity and a plurality of water outlet holes disposed on a peripheral wall at the front end thereof;said receiving cavity extends a proper length into said outlet cap which is provided with an internally threaded section at the other end opposite to said receiving cavity;whereby said valve shaft is led into engagement with the fixing hole and said sealing bulges are engaged with the small diametered section of said inlet passage of said switch valve;said small diametered tube section of said discharge head is inserted into said inlet passage of said switch valve;said small seal ring is attached to the small diametered section of said passage hole of said rinsing shower head;said switch valve together with said discharge head is housed in the large diametered portion of the passage hole of said rinsing shower head;said water inlet hole of said switch valve is in communication with a water delivery conduit of said rinsing shower head;said driving end of the valve shaft sticks into said control chamber of said rinsing shower head;said bubble generator and the large seal ring are placed into the receiving cavity of said outlet cap which is then secured to the rinsing shower head by engaging the internally threaded section with the external threads of said shower head;said pivot projection of the press button board is engaged with the abutment groove of the control chamber of the rinsing shower head;said driving section of the press button board is disposed next to the end of said valve shaft in the control chamber; then said central activation hole of the deformable cap is forced into snap engagement with the driving end of said valve shaft which sticks out in the control chamber at the back of said rinsing shower head;said valve shaft can be linearly moved forwardly or backwardly by said deformable cap which is pushed or pulled back and forth by said press button board;said sealing hoop as well as said flexible cover is attached to said control chamber at the back of said rinsing shower head;said rinsing shower head is connectable to a water pipe which is opened to let running water flow into the shower head via the delivery conduit and the inlet hole of said switch valve and further flow into said inlet passage of said switch valve;when the front portion of said soft cover is pressed down, said press button board will be pivoted at one end to push against said valve shaft and force said bias spring to compress at the same time, causing said sealing bulges to move toward each other, resulting in the opening of the front end of said inlet passage normally blocked by one of the sealing bulges so that water will rush in via said inlet passage and said outlet hole of said switch valve and further into said bypass and to said outlet slot passage of said switch valve; water is finally discharged via the outlet bores of said outlet cap;as the rear portion of said soft cover is pressed, the front end of the press button board is pivoted away from the switch valve, causing said deformable cap to bring the valve shaft to move away from said switch valve, causing the sealing bulge positioned at the conic dodge head of said valve shaft to move toward the other sealing bulge at the opposite end of said valve shaft, causing the compression of said bias spring; thus, without the blockage of said sealing bulge at said tube section of said discharge head, water flowing through the delivery conduit and the inlet hole of the rinsing shower head is led through the tube section and the discharge holes of said discharge head and is discharged via said bubble generator; when said soft cover is free of a pressing force, the compressed bias spring will bring said sealing bulge backs to its original position thereby water is confined in the inlet passage of said switch valve without being discharged via the outlet holes of said outlet cap or said bubble generator.