AIR PUMP

An air pump including an air inlet and outlet provided on housing, the housing connecting sealing assembly capable of sealing air outlet, and a rotary bracket disposed inside housing, capable of driving the sealing assembly to open or seal air outlet when rotating. The sealing assembly includes a cover body connected to housing and provided with an airflow passage communicating with air outlet, the sealing assembly further includes sealing bracket capable of being pushed by rotary bracket and sliding horizontally relative to housing when the rotary bracket rotates. The sealing bracket includes sealing body with at least two contacting bars of an array in a circumferential direction contacting rotary bracket, the sealing bracket has a sealing ring capable of being in sealing contact with housing and being detached from housing when sealing bracket slides, a spring for pressing the sealing bracket toward housing is disposed between sealing and cover body.

FIELD OF THE INVENTION

The present invention relates to an air pump.

BACKGROUND OF THE INVENTION

At present, there are many inflatable products on the market, such as inflatable cushions and so on. These products are usually equipped with an air pump inside the cushions. The air pump has an air inlet and an air outlet, while inflating, the air outlet is opened so that the pumping assembly can pump the air into the product, and when it is full, the air outlet is closed so as to prevent the air from leaking out. However, the sealing assemble for sealing the air outlet on the air pump on the market is complicated in structure, and the movement is not smooth while opening or closing the air outlet, and it is easy to be stuck, the sealing effect is so poor that dust and impurities are easily entered, which may shorten the service life of the air pump.

Therefore, the present invention is based on the above deficiencies.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an air pump that has a simple structure and smooth movement without stagnation when the air outlet is opened or closed.

The present invention is realized by the following technical solution:

An air pump, comprising a housing1, the housing1is provided with an air inlet2and an air outlet3, a pumping assembly4is disposed inside the housing1enabling the air to flow between the air inlet2and the air outlet3, wherein the housing1is connected with a sealing assembly5capable of sealing the air outlet3, and a rotary bracket6is also disposed inside the housing1, capable of driving the sealing assembly5to open or close the air outlet3when rotating, the sealing assembly5includes a cover body51fixedly connected to the housing1and the cover body51is provided with an airflow passage52communicating with the air outlet3, the sealing assembly5further includes a sealing bracket53capable of being pushed by the rotary bracket6and sliding horizontally relative to the housing1when the rotary bracket6rotates, the sealing bracket53includes a sealing body531provided with at least two contacting bars532of an array in a circumferential direction connected with the rotary bracket6, the sealing bracket53is provided with a sealing ring54capable of being contacted with the housing1hermetically and being detached from the housing1when the sealing bracket53slides, a spring55for pressing the sealing bracket53toward the housing1is disposed between the sealing body531and the cover body51.

In the air pump, the spring55is located at the outside of the housing1.

In the air pump, the rotary bracket6connected with a rotary button7which is exposed out of the housing1.

In the air pump, the air inlet2is arranged on the rotary button7.

In the air pump, the rotary bracket6includes a rotary body61provided with a concave groove62/concave grooves62, and the concave groove62has an inclined groove wall or a cambered groove wall, when the rotary bracket6rotates, the groove wall of the concave groove62pushes/the groove walls of the concave grooves62push the sealing bracket53to move horizontally.

In the air pump, the pumping assembly4is provided on the rotary bracket6.

In the air pump, the housing1is provided with guiding holes8, and the contacting bars532pass through the guiding holes8respectively.

In the air pump, the sealing ring54includes an annular ring body541having two annular sealing convex ribs542projecting to one side, and an annular gap543is formed between the two sealing convex ribs542.

In the air pump, the hardness of the sealing convex ribs542is lower than the hardness of the ring body541.

Compared with the prior art, this invention has the following advantages:1. In the invention, when the inflatable product is inflated, the rotary bracket rotates and pushes the contacting bars of the sealing bracket during the rotation process, making the sealing bracket to slide laterally relative to the housing, and the spring is further compressed, at this point, the sealing ring of the sealing bracket is detached from the housing to open the air outlet, thus the pumping assembly operates to inflate from the air inlet to the air outlet. Since at least two contacting bars of an array in a circumferential direction connected to the rotary bracket are arranged on the sealing body, the sealing bracket moves very smoothly when it slides laterally, and no deflection or stagnation occurs. The air outlet is evenly opened, making the inflation or deflation time shorter, so that the air pump operates stably and reliably, and due to the smooth movement of the sealing bracket, the contact portion between the sealing ring and the housing does not appear to be loose or tight in some position, which ensures the good sealing effect of the sealing ring on the air outlet.2. In the invention, the rotary bracket includes a rotary body provided with a concave groove/concave grooves, and the groove has an inclined groove wall or a cambered groove wall. When the air outlet is sealed, the end of the each contacting bar is located in the groove, at this time the spring is pressed against the sealing bracket, thus bring the sealing ring into close contact with the housing to seal the air outlet. When the rotary bracket rotates, the inclined groove wall or the cambered groove wall presses the contacting bars, so that the sealing bracket moves back and the sealing ring is disengaged from the housing to open the air outlet, the spring is further compressed. Therefore, as long as the rotary bracket rotates, the air outlet can be opened or sealed, and the rotary bracket is also connected with a rotary button which is exposed out of the housing for convenient and quick operation of rotating the rotary bracket manually.3. In the invention, the sealing ring includes an annular ring body having two annular sealing convex ribs projecting to one side, and an annular gap is formed between two sealing convex ribs. Through the contact between two sealing convex ribs and the outer portion of the air outlet of the housing, two ring contacts are formed to achieve the double sealing effect, and the sealing effect is better. The arrangement of the annular gap can also prevent the impurity and dust from entering the interior of the housing, avoiding the contamination of the internal components of the housing and ensuring longer service life of the air pump.4. In the invention, the hardness of the sealing convex ribs is lower than the hardness of the ring body. Therefore, the harder ring body has sufficient support force to support the spring force of the spring, so that the sealing ring is pressed tightly against the housing to seal the air outlet. And the softer sealing convex ribs have good elasticity, when it is pressed by the harder ring body, it is more easily deformed to seal the air outlet, which can effectively prevent dust from entering the inside of the sealing convex ribs and achieve better sealing effect.5. The invention has the advantages of simple structure, smooth movement without stagnation, good sealing effect, and is suitable for popularization and application.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the110drawings:

As shown inFIG. 1toFIG. 5, an air pump, comprising a housing1, the housing is provided with an air inlet2and an air outlet3, a pumping assembly4is disposed inside the housing1enabling the air to flow between the air inlet2and the air outlet3, wherein the housing1is connected with a sealing assembly5capable of sealing the air outlet3, and a rotary bracket6is also disposed inside the housing1, capable of driving the sealing assembly5to open or close the air outlet3when rotating, the sealing assembly5includes a cover body51fixedly connected to the housing1and provided with an airflow passage52communicating with the air outlet3, the sealing assembly5further includes a sealing bracket53capable of being pushed by the rotary bracket6and sliding horizontally relative to the housing1when the rotary bracket6rotates, the sealing bracket53includes a sealing body531provided with at least two contacting bars532of an array in a circumferential direction connected with the rotary bracket6, the sealing bracket53is provided with a sealing ring54capable of being in sealing contact with the housing1and being detached from the housing1when the sealing bracket53slides, a spring55for pressing the sealing bracket53toward the housing1is disposed between the sealing body531and the cover body51. To inflate, the rotary bracket6rotates and pushes the contacting bar532of the sealing bracket53during the rotation process, making the sealing bracket53to slide laterally relative to the housing1, and when the spring55is further compressed, the sealing ring54of the sealing bracket53disengages from the housing1to open the air outlet3, thus the pumping assembly4operates to allow air to enter from the air inlet2and pass through the inside of the housing1from the air outlet3, flowing out into the inflatable product. When the inflation is completed, the rotary bracket is rotated again, the sealing bracket53is moved in the opposite direction, the spring55presses the sealing bracket53, and the sealing ring54is pressed against the housing1to seal the air outlet3, ensuring that the air in the inflatable product will not leak out. When the air inside the inflatable product needs to be exhausted by pumping the inflatable product, the rotary bracket6is rotated again to make the sealing ring54disengage from the housing1. At this time, the air outlet3is opened, and the air inside the inflatable product is sequentially discharged through the air outlet3, the inside of the housing1and the air inlet2. The pumping assembly4is prior art and will not be described herein. Since the sealing body531is provided with at least two contacting bars532of an array in a circumferential direction connected with the rotary bracket6, the sealing bracket53moves very smoothly when it slides laterally, and no deflection or stagnation occurs. The air outlet3is evenly opened, making the inflation or deflation time shorter, so that the air pump operates stably and reliably, and due to the smooth movement of the sealing bracket53, the contact portion between the sealing ring54and the housing1does not appear to be loose or tight in some position, which ensures the good sealing effect of the sealing ring54on the air outlet53.

As shown inFIG. 3, the spring55may be located at the outside of the housing1, therefore, when the air pump is assembled, the sealing bracket53and the sealing ring54may be assembled to the housing1first, then the spring55is assembled, and the cover body51is fixedly assembled to the housing1finally, which is simpler and more convenient to assemble. It is also convenient to replace and repair when the seal assembly5needs to be replaced and repaired. The spring55is always in a compressed state regardless of whether the air outlet3is opened or closed.

As shown inFIG. 1,FIG. 2andFIG. 5, the rotary bracket6is connected with a rotary button7which is exposed out of the housing1. By rotating the rotary button7manually, the rotary bracket6can be conveniently rotated, thereby opening or sealing the air outlet3, which is very convenient and quick.

As shown inFIG. 1andFIG. 5, the air inlet2is arranged on the rotary button7, and the structure is simpler and the production is more convenient.

As shown inFIG. 5, the rotary bracket6may include a rotary body61provided with a concave groove62/concave grooves62, and the concave groove62has an inclined groove wall or a cambered groove wall, when the rotary bracket6rotates, the groove wall of the concave groove pushes/the groove walls of the concave grooves62push the sealing bracket53to move horizontally. When the air outlet3is sealed, the end of each contacting bars532is located in the concave groove62correspondingly, at this time the spring55is pressed against the sealing bracket53, thus bring the sealing ring54into close contact with the housing1to seal the air outlet3. When the rotary bracket6rotates, the inclined groove wall or the cambered groove wall of the concave groove62presses the contacting bar532, so that the sealing bracket53moves back and the sealing ring54is disengaged from the housing1to open the air outlet3, the spring55is further compressed. Therefore, as long as the rotary bracket6rotates, the air outlet can be opened or sealed, the structure is simple and the design is ingenious. When the air outlet3is sealed, the end of each contacting bar532is located in the concave groove62, the concave groove62/grooves62also serves/serve to position the sealing bracket53at the same time, so that the entire air pump structure is simple and compact, and the rotating bracket6is also connected with a rotary button7exposed out of the housing1, which is very convenient and quick to operate manually.

As shown inFIG. 5, the pumping assembly4is disposed on the rotary bracket6, making the structure of the entire air pump simpler and more compact.

As shown inFIG. 3andFIG. 6, the housing1is provided with guiding holes8, and the contacting bars532pass through the guiding holes8respectively. Therefore, when the sealing bracket53slides, it is operated more smoothly and reliably.

As shown inFIG. 4, the sealing ring54may include an annular ring body541having two annular sealing convex ribs542projecting to one side, and an annular gap543is formed between the two sealing convex ribs542. Through the contact between two sealing convex ribs542and the outer portion of the air outlet3of the housing1, two ring contacts are formed to achieve the double sealing effect, and the sealing effect is better. The arrangement of the annular gap543can also prevent the impurity and dust from entering the interior of the housing1, avoiding the contamination of the internal components of the housing1.

As shown inFIG. 4, the hardness of the sealing convex ribs542is lower than the hardness of the ring body541. Therefore, the harder ring body541has sufficient support force to support the spring force of the spring55, so that the sealing ring54is pressed tightly against the housing to seal the air outlet3. And the softer sealing convex ribs542have good elasticity, when it is pressed by the harder ring body541, it is more easily deformed to seal the air outlet3, which effectively prevent dust from entering the inside of the sealing convex ribs542and achieve better sealing effect.