CN2359487Y - Convenient anti-leakage inflatable head - Google Patents

Abstract

The utility model discloses a convenient anti-leakage inflatable head, which comprises a fixing nut and a moving air pipe. The utility model is characterized in that the inner cavity of the fixing nut comprises a front cavity, a middle cavity and a rear cavity, wherein, the inner wall of the front cavity is provided with internal screw threads, and the middle part of the fixing nut is provided with a projecting fixing ring which is adjacent with or is connected with the internal screw threads; the front end of the moving air pipe comprises a middle air pipe, a top head of the front end of the middle air pipe and a step of the rear end of the middle air pipe, the front part of the moving air pipe is placed in the rear cavity of the inner cavity of the fixing nut and can be moved in the rear cavity, and the top head of the front end can be extended into the front cavity of the inner cavity of the fixing nut. Thus, the utility model has the advantages of anti-leakage function providing and convenient use and operation.

Description

Make things convenient for the leakproof pneumatic head

The utility model belongs to a kind of pneumatic head of pump, relates in particular to the pneumatic head of the pump that motorcycle uses.

The pneumatic head of existing pump, as shown in Figure 3, when set screw nut is rotated into or produces motorcycle gas and chews, because being built in and being enclosed within top that the front end of the movable tracheae front portion in the inner chamber of set screw nut is provided with is in all the time to withstand on the valve inside that the motor vehicle wheel nausea chews and makes valve inside be in open mode, thereby the pneumatic head of making full back pump when the motor vehicle wheel nausea produces and easily causes gas leak phenomenon when motorcycle gas is chewed, motorcycle gas was not chewed just air tightly when the top of movable tracheae front portion did not withstand on the valve inside that the motor vehicle wheel nausea chews when the set screw nut of pneumatic head produces motorcycle gas and chews certain distance, thereby used inconvenient operation.

The purpose of this utility model provides a kind of air tight and use the easy to operate leakproof pneumatic head that makes things convenient for.

The purpose of this utility model is to realize like this, the described leakproof pneumatic head that makes things convenient for, comprise set screw nut and movable tracheae, movable tracheae front portion is built in and is enclosed within the inner chamber of set screw nut and its front end is provided with the top, movable tracheae rear end is a suction port, and its structural feature is that the inner chamber of described set screw nut comprises ante-chamber, middle part and back cavity, and preceding cavity wall is made internal thread, the middle part of the inner chamber of set screw nut is provided with the retaining ring of protrusion, and retaining ring and internal thread are adjacent or join; The front portion of movable tracheae comprises the top that middle gas tube, middle gas tube front end are provided with and the step of middle gas tube rear end; Movable tracheae front portion is built in the back cavity of set screw nut inner chamber and can stretches in the ante-chamber of set screw nut inner chamber the movable top that its front end is provided with in back cavity.

The purpose of this utility model also can be achieved through the following technical solutions, the described leakproof pneumatic head that makes things convenient for, and its characteristics are that the retaining ring that protrude at the middle part of the step of middle gas tube rear end of movable tracheae front portion and set screw nut inner chamber all fills up rubber pad.

The utility model is owing to be provided with at the middle part of set screw nut inner chamber between the retaining ring of the protrusion in the middle part of step and the set screw nut inner chamber of middle gas tube rear end of the retaining ring of protrusion and movable tracheae and make a determining deviation, thereby when inflation, set screw nut is rotated into motorcycle gas to be chewed, the top that the front end of movable tracheae front portion is provided with is not withstood fully on the valve inside that the motor vehicle wheel nausea chews and is made valve inside be in normally off, having only when external force the top of movable tracheae front end to be pushed down on the valve inside that the motor vehicle wheel nausea chews opens valve inside, gas just can be got to the motor vehicle wheel nausea and enter tire chewing from the gap, top of the front end of the movable tracheae front portion of pneumatic head, external force was removed then because valve inside self elasticity and closing automatically when gas was full of, thereby had air tight and use easy to operate.

Below in conjunction with accompanying drawing and example the utility model is described in detail:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cross-sectional schematic of Fig. 1.

Fig. 3 is the prior art constructions schematic representation.

As Fig. 1, shown in Figure 2, the utility model comprises set screw nut 1 and movable tracheae 2, movable tracheae front portion is built in and is enclosed within the inner chamber of set screw nut and its front end is provided with top 3, movable tracheae rear end is a suction port 4, movable tracheae middle part is provided with taper ladder 11, taper ladder 11 and set screw nut 1 external rear wall form the neck of certain distance, can overlap chain with fixing pneumatic head on pump, the taper ladder is used for external force and applies the place, generally can adopt clip, clip forces in trach head 12 places, the inner chamber of set screw nut 1 comprises ante-chamber 5, middle part and back cavity 6, preceding cavity wall is made internal thread, be used to be rotated into or produce motorcycle gas and chew, the middle part of the inner chamber of set screw nut is provided with the retaining ring 7 of protrusion, retaining ring and internal thread are adjacent or join, retaining ring is used for the location, making set screw nut be rotated into motorcycle gas chews, the valve inside that the motor vehicle wheel nausea is chewed can not be pressed onto owing to retaining ring blocks on the top of front end of movable tracheae front portion and make valve inside be in normally off, movable tracheae front portion be built in the back cavity in the set screw nut inner chamber and can be in back cavity activity promptly rotatable and move forward and backward; The front portion of movable tracheae comprises the top 3 that middle gas tube 8, middle gas tube front end are provided with and the step 9 of middle gas tube rear end; The retaining ring 7 that protrude at the step 9 of middle gas tube 8 rear ends of movable tracheae front portion and the middle part of set screw nut inner chamber all fills up rubber pad 10.Making a determining deviation between the retaining ring of the protrusion at the step of middle gas tube 8 rear ends of described movable tracheae and set screw nut inner chamber middle part does not withstand on the valve inside that the motor vehicle wheel nausea chews the top of the middle gas tube front end of movable tracheae front portion and makes valve inside be in normally off, thereby when inflation, set screw nut is rotated into motorcycle gas chews, the top that the front end of movable tracheae front portion is provided with is not withstood fully on the valve inside that the motor vehicle wheel nausea chews and is made valve inside be in normally off.Have only the external force of working as to adopt clip to apply movable trach head, the top of movable tracheae front end pushed down on the valve inside that the motor vehicle wheel nausea chews valve inside is opened, gas just can be got to the motor vehicle wheel nausea and enter tire chewing from the gap, top of the front end of the movable tracheae front portion of pneumatic head, external force was removed then because valve inside self elasticity and closing automatically when gas was full of.

Claims (2)

1, a kind of leakproof pneumatic head that makes things convenient for, comprise set screw nut (1) and movable tracheae (2), movable tracheae front portion is built in and is enclosed within the inner chamber of set screw nut and its front end is provided with top (3), movable tracheae rear end is suction port (4), the inner chamber that it is characterized in that described set screw nut (1) comprises ante-chamber (5), middle part and back cavity (6), before cavity wall make internal thread, the middle part of the inner chamber of set screw nut is provided with the retaining ring of protrusion (7), retaining ring and internal thread are adjacent or join; The front portion of movable tracheae comprises the top (3) that middle gas tube (8), middle gas tube front end are provided with and the step (9) of middle gas tube rear end; Movable tracheae front portion is built in the back cavity of set screw nut inner chamber and can stretches in the ante-chamber of set screw nut inner chamber the movable top that its front end is provided with in back cavity.

2, the leakproof pneumatic head that makes things convenient for according to claim 1 is characterized in that the retaining ring (7) that protrude at the middle part of the step (9) of middle gas tube (8) rear end of movable tracheae front portion and set screw nut inner chamber all fills up rubber pad (10).

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