CN203822033U

CN203822033U - Air buffer

Info

Publication number: CN203822033U
Application number: CN201420064613.7U
Authority: CN
Inventors: 林原平
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-29
Filing date: 2014-02-13
Publication date: 2014-09-10
Anticipated expiration: 2024-02-13

Abstract

The utility model discloses an air buffer. The air buffer comprises an outer pipe, a piston, a sleeving ring, a central needle, a head plug and an iron shaft, wherein the sleeving ring sleeves the piston; the iron shaft is pressed into the central needle; a convex ring is arranged at the outer end of the central needle; a plurality of circles of annular grooves are formed in the outer part of the soft rubber piston; a groove is formed in the piston; the convex ring of the central needle is matched with the groove in the piston; a small hole is formed in the tail part of the outer pipe; a dust-proof base clamping ring is arranged on the bottom of the outer pipe; a filtering net and a dust-proof base are arranged in the dust-proof base clamping ring; the dust-proof base is arranged in the dust-proof base clamping ring; the dust-proof base and the filtering net are positioned at the rear end of the small hole. The air buffer is suitable for realizing a buffering function when a drawer, a cabinet door, a side slide door, a box body cover and the like are closed; a door cover can be slowly closed by the air buffer; when the door cover is opened, a piston rod is drawn out, and air is sucked into a pipe cavity; when the door cover is closed, the piston rod is pushed in, the piston compresses the air in the pipe, the air slowly leaks from the small hole in the tail part of the outer pipe, and the door cover is slowly closed under the action of resistance.

Description

A kind of pneumatic buffer

Technical field

The utility model relates to a kind of pneumatic buffer.

Background technology

In life, household, door closure, because spring has been designed in inner end, can accelerate closed and produce collision, and then can send the very large sound, affecting surrounding population, and long-term collision also can reduce application life, for head it off, be conventionally provided with oil buffer and make its deceleration and noise reduction, but the high risk that also has leakage of oil of oil buffer complex process, cost of manufacture.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of pneumatic buffer that reduces door closure closing speed.

The utility model is achieved through the following technical solutions: a kind of pneumatic buffer, comprise outer tube, piston, the collar, center pin, screw plug and iron axle, the described collar is sleeved on piston, described iron axle is pressed in the pin of center, the outer end of described center pin is provided with bulge loop, described piston outside is provided with some ring annular grooves, internal piston is provided with groove, center pin bulge loop and internal piston groove fit, described outer tube afterbody is provided with aperture, described outer tube bottom is provided with anti-dust seat snap ring, in described anti-dust seat snap ring, be provided with screen pack and anti-dust seat, described screen pack is arranged on anti-dust seat front end, anti-dust seat is arranged in anti-dust seat snap ring, described anti-dust seat and screen pack are positioned at aperture rear end, described screw plug is sleeved on outer tube outer end, be used for sealing whole outer tube.

As preferred technical scheme, described piston is made by soft rubber material, and outer end is provided with annular groove.

The beneficial effects of the utility model are: this is applicable to damping function when closed such as drawer, cabinet door, side sliding door, Box Cover the utility model, increasing this air spring can make door closure slowly closed, when opening door closure, air spring piston bar is pulled out, soft piston attenuates so that air amount in tube chamber because of elongation, door closure pushes piston rod when closed, soft piston is because of intraductal atmospheric pressure increasing cripling, make piston seal and compression inner air tube, air is slowly spilt by the aperture of outer tube afterbody, makes door closure be subject to resistance and slowly closes.

Accompanying drawing explanation

For ease of explanation, the utility model is described in detail by following specific embodiment and accompanying drawing.

Fig. 1 is the figure that is pressed into of the utility model air spring.

Fig. 2 is the figure that pulls out of the utility model air spring.

Fig. 3 is sectional view of the present utility model.

Fig. 4 is explosive view of the present utility model.

Fig. 5 is the partial sectional view of Fig. 4.

The specific embodiment

As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, a kind of pneumatic buffer of the present utility model, comprise outer tube 1, piston 4, the collar 5, center pin 6, screw plug 7 and iron axle 8, the described collar 5 is sleeved on piston 4, described iron axle 8 is pressed in center pin 6, the outer end of described center pin 6 is provided with bulge loop, described piston outside is provided with some ring annular grooves, internal piston is provided with groove, center pin bulge loop coordinates with piston 4 interior grooves, described outer tube 1 afterbody is provided with aperture 9, described outer tube 1 bottom is provided with anti-dust seat snap ring 10, in described anti-dust seat snap ring 10, be provided with screen pack 2 and anti-dust seat 3, described screen pack 2 is arranged on anti-dust seat 3 front ends, anti-dust seat 3 is arranged in anti-dust seat snap ring 10, described anti-dust seat 3 and screen pack 2 are positioned at aperture 9 rear ends, described screw plug 7 is sleeved on outer tube 1 outer end, be used for sealing whole outer tube 1.

As preferred embodiment, piston 4 is made by soft rubber material, and outer end is provided with annular groove, makes piston elongate and attenuate when central axis is pulled outwardly, and pipe outer air around enters in pipe by piston, the piston sealing inner air tube that swells when central axis inwardly pushes.

While opening door closure, air spring piston bar is pulled out, air amount in tube chamber, door closure pushes piston rod when closed, make piston compression inner air tube, air is slowly spilt by the aperture of outer tube afterbody, making door closure be subject to resistance slowly closes, outer tube afterbody has micro hole, there is greasy dirt in Air Filter isolated tube to block micropore, inner air tube from then on aperture slowly flows out, make piston produced by air resistance and wear away speed, air resistance and friction produce resistance slows down the assembly being attached thereto, to reach the damping of air spring.

The beneficial effects of the utility model are: this is applicable to damping function when closed such as drawer, cabinet door, side sliding door, Box Cover the utility model, increasing this air spring can make door closure slowly closed, when opening door closure, air spring piston bar is pulled out, air amount in tube chamber, door closure pushes piston rod when closed, make piston compression inner air tube, air is slowly spilt by the aperture of outer tube afterbody again, makes door closure be subject to resistance and slowly closes.

The above, be only the specific embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.

Claims

1. a pneumatic buffer, it is characterized in that: comprise outer tube, piston, the collar, center pin, screw plug and iron axle, the described collar is sleeved on piston, described iron axle is pressed in the pin of center, the outer end of described center pin is provided with bulge loop, described piston outside is provided with some ring annular grooves, internal piston is provided with groove, center pin bulge loop and internal piston groove fit, described outer tube afterbody is provided with aperture, described outer tube bottom is provided with anti-dust seat snap ring, in described anti-dust seat snap ring, be provided with screen pack and anti-dust seat, described screen pack is arranged on anti-dust seat front end, anti-dust seat is arranged in anti-dust seat snap ring, described anti-dust seat and screen pack are positioned at aperture rear end, described screw plug is sleeved on outer tube outer end, be used for sealing whole outer tube.

2. pneumatic buffer according to claim 1, is characterized in that: described piston is made by soft rubber material, and outer end is provided with some ring annular grooves.