Push-button air pump

Abstract

A push-button air pump includes a casing, a blower device, and a push button device. A top panel of the casing is formed with a first inflation opening and a first deflation opening. The push button device includes an inflation button and a deflation button. The lower portion of the casing is formed with a second inflation opening and a second deflation opening. The inflation button and the deflation button are adapted to control inflation and deflation. This simplifies the complicated structure of the traditional turn-knob control. The size of the product becomes smaller. The way for inflation and deflation is simple, and the operation is convenient.

What is claimed is: 
     
         1 . A push-button air pump comprising a casing, a blower device installed in the casing, and a push button device used to control inflation and deflation, a top panel of the casing being formed with a first inflation opening and a first deflation opening, the push button device comprising an inflation button to open or close the first inflation opening and a deflation button to open or close the first deflation opening, the inflation button being movably installed at the first inflation opening, the deflation button being movably installed at the first deflation opening; a lower portion of the casing being formed with a second inflation opening and a second deflation opening, a flow switching device being provided between the second inflation opening and the second deflation opening to partition an inflation passage and a deflation passage, the inflation passage communicating with the first inflation opening and the second inflation opening, the deflation passage communicating with the first deflation opening and the second deflation opening, the flow switching device being located under the deflation button; wherein when the inflation button is pressed, the inflation passage is opened and the blower device is started; wherein when the deflation button is pressed, the flow switching device is triggered to close the inflation passage and open the deflation passage. 
     
     
         2 . The push-button air pump as claimed in  claim 1 , wherein the push button device comprises a first self-locking mechanism disposed under the inflation button, the first self-locking mechanism being adapted to lock the inflation button; the push button device further comprises a second self-locking mechanism disposed the deflation button, the second self-locking mechanism being adapted to lock the deflation button. 
     
     
         3 . The push-button air pump as claimed in  claim 2 , wherein the first and second self-locking mechanisms each comprise a ratchet-like shaft, a spring, a support plate, and a fluted disc, the ratchet-like shaft being integrally formed with a bottom of the inflation button or the deflation button, the support plate being fixedly connected to the casing, the support plate having two toothed holes thereon, the spring being fitted on the ratchet-like shaft and connected between the inflation button and the support plate, wherein when the inflation button or the deflation button is pressed, the ratchet-like shaft is driven to move down into the toothed hole to engage with the fluted disc. 
     
     
         4 . The push-button air pump as claimed in  claim 1 , wherein the casing has a first room, a second room, and a third room located at a bottom of the casing, an upper end of the first room communicating with the first inflation opening, an upper end of the second room communicating with the first deflation opening, bottoms of the first room and the second room communicating with the third room, the second inflation opening communicating with the third room, the second deflation opening communicating with the first room; the first inflation opening, the first room, the third room, and the second inflation opening communicating with each other sequentially to form the inflation passage; the second deflation opening, the first room, the third room, the second room, and the first deflation opening communicating with each other sequentially to form the deflation passage. 
     
     
         5 . The push-button air pump as claimed in  claim 4 , wherein the blower device is installed in the casing and located at the junction of the inflation passage and the deflation passage; the blower device comprises a motor and an impeller driven by the motor, the motor being installed in the first room, the impeller being installed in the third room. 
     
     
         6 . The push-button air pump as claimed in  claim 1 , wherein a cord storage device is provided on the top panel of the casing to store a power cord, the cord storage device comprising a cord storage bracket made of a soft plastic material and a connecting member used to install the cord storage bracket on the top panel, the cord storage bracket comprising a top portion, a turning portion which is integrally formed with a circumferential edge of the top portion and can be turned over relative to the top portion, and a cord storage space formed between the turning portion and the top portion. 
     
     
         7 . The push-button air pump as claimed in  claim 6 , wherein at least one binding strap is provided in the cord storage space, the binding strap being an elastic plastic strap which is integrated with an inner side of the top portion of the cord storage bracket, two ends of the binding strap being integrated with the top portion of the cord storage bracket. 
     
     
         8 . The push-button air pump as claimed in  claim 1 , wherein a lower end of the flow switching device is against a return spring, the flow switching device comprising an operation portion, a partition portion, an inflation valve, and a deflation valve, the operation portion being located under the deflation button, the inflation valve corresponding in position to the second inflation opening, the deflation valve corresponding in position to the second deflation opening. 
     
     
         9 . The push-button air pump as claimed in  claim 1 , wherein the inflation button is provided with a first seal ring disposed on a connecting surface of the inflation button relative to the first inflation opening; the deflation button is provided with a second seal ring disposed on a connecting surface of the deflation button relative to the first deflation opening. 
     
     
         10 . The push-button air pump as claimed in  claim 3 , wherein the support plate is provided with a switch used to turn on the blower device, the switch comprising a first electrode piece and a second electrode piece to cooperate with each other, one side of the first electrode piece being against a return spring, the inflation button and the deflation button each having a triggering rod extending from the bottom thereof, the first electrode piece being to connect with or disconnect from the second electrode piece along with movement of the triggering rod.