CN2457406Y - Inlet gas leak-proof structure for downward exhaust valve of pneumatic tool - Google Patents

Abstract

The utility model provides an inlet gas leakproof structure for a downward exhausting valve of a pneumatic tool. The utility model is characterized in that a hard saddle is pushed by a hard movable seat to prolong the service life of the hard saddle. When a movable switch is not operated and controlled, a soft body arranged on the hard movable seat is tightly butted with the butting and supporting surface of the hard saddle to form gastight effects which can completely block compressed air from entering, and thus, the pneumatic tool has excellent positive motion performance which can accord with users' desired outlet work completely.

Description

The air inlet leak stoppage structure of drain tap under the pneumatic tool

The utility model relates to air tool structure technology, is the air inlet leak stoppage structure of drain tap under a kind of pneumatic tool.

Modern science is flourishing, the various instruments that increase working efficiency are a feast for the eyes especially, too numerous to enumerate, and it is of a great variety especially to be generally used in the pneumatic tool that bores the lock use, and pneumatic tool such as Fig. 1 that known brill lock uses, shown in 2, be installed with a soft saddle 20 in the following vent 11 of its pneumatic tool 10, and the periphery wall of this soft saddle 20 is provided with caulking groove 21, but build-in packing ring 30, and be provided with open-work 22 in the pedestal inboard, the continuous motion stem 41 that supplies hard active base 40 tops is by after passing in the open-work 22, be subjected to connecting rod 14 front ends of movable switch 13 to do laterally to press from both sides to establish again, and the pedestal periphery wall of this hard active base 40 to be one extend several piece shape support piece 42, and establish a guide rod 43 in the pedestal bottom of hard active base 40 and form a supporting surface 44, these guide rod 43 appearances are through in the spring 50, one end of spring 50 tool taperings 51 is supporting surfaces 44 of pushing and pressing hard active base 40, the other end of spring 50 is supported by hitching post 60 front end supporting surfaces 61 then, this hitching post 60 is provided with one section screw section 62, can be fixed with the screw lock of following vent 11 screw sections 12 by its screw section 62, and whole group member is located in down in the vent 11, establish a screw that runs through 63 in the cylinder of this hitching post 60, can link compressed air line, can make pneumatic tool 10 do running whereby when manipulation activities switch 13 uses, and the action of stop use, only whether by the air inlet of 10 times drain taps of aforementioned pneumatic tool as can be known, it still is the soft saddle 20 of interlock hard active base 40 pushing and pressing by movable switch 13, and form tool 10 runnings of starting building of air inlet air feed, or it is fully closed and make the running of pneumatic tool 10 stops, yet, by soft saddle 20 modes of aforementioned hard active base 40 pushing and pressing, but there is following actual disappearance:

1, under normal operation, this hard active base 40 is controlled by movable switch 13, thereby the connecting rod 14 of movable switch 13 is to adopt the continuous motion stem 41 that horizontal folder is established hard active base 40, therefore be to be that the hard active base is made the horizontal application of force, so pulled when movable switch 13 and inwardly to be contracted when moving, even the drift angle displacement takes place in hard active base 40, and the piece 42 that supports that utilizes that one extends supports soft saddle 20 supporting surfaces 23 and is basic point, pressure spring 50 is retired backward, and make pressurized air can enter the inside of pneumatic tool 10 via the open-work 22 of soft pedestal 20, and can drive pneumatic tool 10 works done, but owing to do the drift angle motion for a long time, therefore the supporting surface 23 of this soft pedestal 20 suffer for a long time hard active base 40 support piece 42 to towards displacement, very easily, fair wear and tear constantly heavily covers pushing and pressing because of reaching, and the supporting surface 23 that makes soft pedestal 20 forms depression, and the airtight effect that can't when being returned to user mode not, form at movable switch 13, though so that cause the operation of stop movable switch 13, pneumatic tool 10 still to continue the slowly misoperation of running.

2, aforesaid soft pedestal 20 supports the supporting towards displacement of piece 42 what suffer hard active base 40 for a long time, when the quality that soft pedestal 20 takes place is bad, supporting towards displacement to piece 42 because of hard active base 40 promptly arranged, and the phenomenon of tearing soft pedestal 20, and make controlling of movable switch 10 ineffective fully.

3, aforesaid soft pedestal 20 supports the supporting towards displacement of piece 42 what suffer hard active base 40 for a long time, it is no matter because of fair wear and tear or the depression of constantly heavily covering pushing and pressing and being produced, or because of bad the tearing of producing of soft pedestal 20 qualities, it all can't reach airtight effect, and make pressurized air continue to enter in the pneumatic tool 10 via this gaps and omissions place, compressed-air actuated pressure is weakened, the pneumatic tool merit that turns round out is reduced relatively, be difficult to meet user's actual demand.

Because every defective of above-mentioned prior art, the purpose of this utility model is to propose the air inlet leak stoppage structure of drain tap under a kind of pneumatic tool.

The technical solution of the utility model is to utilize hard active base pushing and pressing hard saddle, make increase the working life of hard saddle, and when movable switch is not controlled, utilize the supporting surface of soft body set on the hard active base and hard saddle closely to replace, block the airtight effect that pressurized air enters fully and form, make air tool positive motion good, and can meet fully the user required go out merit.

The air inlet leak stoppage structure of drain tap under the pneumatic tool of the present utility model, its main structure is: be installed with a hard saddle in the vent down in air tool, and the periphery wall of this hard saddle is provided with caulking groove, but and build-in packing ring, and be provided with open-work in the pedestal inboard, can supply the continuous motion stem on hard active base top by passing in the open-work, be subjected to the connecting rod front end of movable switch to do laterally to press from both sides to establish again, and the pedestal periphery wall one of this hard active base extends the piece that supports of several piece shape, a guide rod is established in pedestal bottom in the hard active base, and form a supporting surface, this guide rod is installed with and is through in the spring, the supporting surface of the one end pushing and pressing hard active base of spring tool tapering, the other end of spring is supported by hitching post front end supporting surface then, and this hitching post is provided with one section screw section, can borrow its screw section fixed with the screw lock of following vent screw section, and whole group member is located in down in the vent, and establish a screw that runs through in the cylinder of this hitching post, can link compressed-air actuated pipeline; The interior one-body molded one soft body of pedestal that it is characterized in that this hard active base, this soft system circle is located at nearly pedestal circle, its end face protrudes from the end face of pedestal, can be when movable switch not be pulled, by the pushing and pressing of spring and closely push against with the supporting surface of hard saddle and form airtight, can avoid that drain tap produces misoperation because of not blocking air inlet fully under the pneumatic tool, reach the effect of air tool positive motion and long service life

Characteristics of the present utility model have been to overcome the shortcoming in the prior art, can avoid that drain tap produces misoperation because of not blocking air inlet fully under the pneumatic tool, reach air tool positive motion and long service life, reduce cost, and have improved benefit.

Below in conjunction with drawings and Examples to its structure further instruction.

Fig. 1 commonly uses the perspective exploded view that is installed with structure in the air tool vent down.

Fig. 2 is a hard active base three-dimensional appearance schematic representation of the present utility model.

Fig. 3 is a hard active base cross-sectional schematic of the present utility model.

Fig. 4 is a hard saddle three-dimensional appearance schematic representation of the present utility model.

Fig. 5 is a hard active base preferred embodiment cross-sectional schematic of the present utility model.

Figure number explanation: 11 times vents of 10 pneumatic tools, 12,62 screw sections, 13 movable switches

14 connecting rods, 20 soft saddle 21,71 caulking grooves 22,72 open- works 23,44,61,73 supporting surfaces

30,90 packing rings, 40,80 hard active base, 41 continuous motion stems 42 support piece 43 guide rods 45 soft bodies

50 springs, 51 taperings, 60 hitching posts, 63 screws, 70 hard saddles, 81 caulking grooves

Cooperate Fig. 1, consult Fig. 2,3, shown in 4, the utility model mainly is to be installed with a hard saddle 70 in the following vent 11 of pneumatic tool 10, and the periphery wall of this hard saddle 70 is provided with caulking groove 71, but and build-in packing ring 30, and be provided with open-work 72 in the pedestal inboard, can supply the continuous motion stem 41 on hard active base 40 tops by passing in the open-work 72, be subjected to connecting rod 14 front ends of movable switch 13 to do laterally to press from both sides to establish again, support piece 42 and the pedestal periphery wall one of this hard active base 40 extends the several piece shape, establish a guide rod 43 in the pedestal bottom of hard active base 40, and form a supporting surface 44, this guide rod 43 is installed with and is through in the spring 50, the supporting surface 44 of the one end pushing and pressing hard active base 40 of spring 50 tool taperings 51, the other end of spring 50 is supported by hitching post 60 front end supporting surfaces 61 then, this hitching post 60 is provided with one section screw section 62, can borrow its screw section 62 fixed with following vent 11 screw sections 12 screw locks, and whole group member is located in down in the vent 11, establish a screw that runs through 63 in the cylinder of this hitching post 60, can link compressed-air actuated pipeline; The interior one-body molded one soft body 45 of pedestal that it is characterized in that this hard active base 40, this soft body 45 is that circle is located at nearly pedestal circle, its end face protrudes from the end face of pedestal, can be when movable switch 13 not be pulled, by the pushing and pressing of spring 50 and closely push against with the supporting surface of hard saddle 70 and form airtight, can avoid that drain tap produces misoperation because of not blocking air inlet fully under the pneumatic tool, reach the effect of air tool positive motion and long service life

As shown in Figure 5, it is a preferred embodiment of the present utility model, its hard active base 80 can be established a caulking groove 81 in the nearly circle ring of its end face, in this caulking groove 81, install a packing ring that can be installed with relatively 90, and this packing ring 90 has one section end face that protrudes from hard active base 80, in the time of can making air tool movable switch reply not user mode whereby, can make the packing ring 90 that is embedded on the hard active base 80 replace the supporting surface 73 of hard saddle 70 fully, block the airtight effect that pressurized air enters fully and form, reach the effect of air tool positive motion and long service life, can meet required the going out of user fully, and zero accident is sent out the anxiety with life.

Claims (1)

1. The air inlet leak stoppage structure of drain tap under a kind of pneumatic tool, its main structure is: be installed with a hard saddle in the vent down in air tool, and the periphery wall of this hard saddle is provided with caulking groove, but and build-in packing ring, and be provided with open-work in the pedestal inboard, the continuous motion stem on hard active base top is by passing in the open-work, be subjected to the connecting rod front end of movable switch to do laterally to press from both sides to establish again, and the pedestal periphery wall one of this hard active base extends the piece that supports of several piece shape, a guide rod is established in pedestal bottom in the hard active base, and form a supporting surface, this guide rod is installed with and is through in the spring, the supporting surface of the one end pushing and pressing hard active base of spring tool tapering, the other end of spring is supported by hitching post front end supporting surface then, and this hitching post is provided with one section screw section, its screw section is fixed with the screw lock of following vent screw section, to put in order the group member and be located in down in the vent, and establish a screw that runs through in the cylinder of this hitching post, and link compressed-air actuated pipeline; The interior one-body molded one soft body of pedestal that it is characterized in that this hard active base, this soft system circle is located at nearly pedestal circle, its end face protrudes from the end face of pedestal, when movable switch is not pulled, is closely pushed against with the supporting surface of hard saddle by the pushing and pressing of spring and forms airtight.

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