CN104265820A

CN104265820A - Buffer rod structure

Info

Publication number: CN104265820A
Application number: CN201410475272.7A
Authority: CN
Inventors: 廖瑞忠
Original assignee: Suzhou Shengde Precise Electric Co Ltd
Current assignee: Suzhou Shengde Precise Electric Co Ltd
Priority date: 2014-09-17
Filing date: 2014-09-17
Publication date: 2015-01-07
Anticipated expiration: 2034-09-17
Also published as: CN104265820B

Abstract

The invention discloses a buffer rod structure. The buffer rod structure comprises an outer pipe, a push rod, a piston piece and a piston buckling piece, wherein one end of the outer pipe is opened while the other end is provided with a pressure relief mechanism; the push rod is arranged in the outer pipe in a sliding mode, one end of the push rod is provided with a driven part while the other end is provided with a piston connecting part, the push rod is provided with a support piece, a first limit piece is arranged between the piston connecting part and the support piece, and a second limit piece is arranged at the end of the piston connecting part; the piston piece is through arranged at the periphery of the piston connecting part of the push rod; the piston buckling piece is through arranged at the periphery of the piston connecting part of the push rod, and the piston buckling piece is sleeved in the piston piece. By means of said structure, the buffer rod structure is capable of realizing unequal exhaust and air inlet control according to the move direction of the push rod, and therefore, the buffer effect can be guaranteed, and the outward push rod pull smoothness is maintained; the buffer rod structure realizes the effects of structure simplification and product reliability improvement.

Description

A kind of fender pile structure

Technical field

The present invention relates to damping device field, particularly relate to fender pile structure.

Background technique

Between a kind of object being located at two relative movement of fender pile system, for cushioning the device of its speed of related movement, to reach the collision power reduced between object or the effect reducing noise, concrete being often applied to can on the door body of automatic returning or drawer sliding rail, refer to the partial enlarged drawing that Figure 1 shows that existing fender pile, it mainly lies in an outer tube 11 and is axially equipped with an axostylus axostyle 12, and the link 13 connected in this axostylus axostyle 12 one end is provided with a piston ring 14, this piston ring 14 is provided with loop portions 141 and a skirt section 142, by this, in order to do when this axostylus axostyle 12 is towards close this piston ring 14 direction displacement, loop portions 141 and the skirt section 142 of this piston ring 14 can be strutted equably by the ejection of this link 13, and make this loop portions 141 and skirt section 142 form good airtight conditions and friction with outer tube 11 inwall, and then make this fender pile can reach the object providing cushioning effect.

This fender pile commonly used, though the object providing cushioning effect can be reached, but this axostylus axostyle 12 is towards when being shifted near this piston ring 14 direction, also the air of outer tube 11 inside can be made to be compressed simultaneously, thus when this axostylus axostyle 12 promote piston ring 14 bottom outer tube 11 time, the thrust of frequent generation axostylus axostyle 12 is less than the situation of outer tube 11 internal air pressure, axostylus axostyle 12 is caused successfully to advance, must wait until that the loop portions 141 of this piston ring 14 just can continue to advance when restoring to the original state with skirt section 142 and make the air pressure in outer tube 11 be less than the thrust of axostylus axostyle 12, fender pile action is caused to have some setbacks, and then cause production reliability to reduce the puzzlement with user.

Summary of the invention

The present invention will solve existing fender pile, and because of in cushion stroke, the air pressure in outer tube is not easily discharged, and causes axostylus axostyle action to have some setbacks, causes awkward problem, and provides a kind of fender pile structure.

A fender pile structure, it comprises: an outer tube, and this outer tube one end is open shape, and this outer tube the other end is provided with a decompression mechanism; One push rod, this push rod system is arranged in this outer tube slippingly, and these push rod two ends are respectively equipped with one and are driven portion and a Piston connecting portion, and this push rod is provided with a supporting element, be provided with one first bounding means between this Piston connecting portion and supporting element, this Piston connecting portion end is provided with one second bounding means; One piston piece, it is peripheral that this piston piece is arranged in its Piston connecting portion of push rod; One piston fastener, it is peripheral that this piston fastener is arranged in its Piston connecting portion of push rod, and this piston fastener is sheathed on this piston piece inside.

Above structure; the present invention can according to the movement direction of push rod, and the exhaust and the air inlet that realize inequality control, and thus not only can guarantee cushioning effect; also can keep smoothness when drawing outside push rod simultaneously, and then make the present invention can reach simplified structure and the effect improving production reliability.

Accompanying drawing explanation

Fig. 1 is the partial schematic diagram of existing fender pile;

Wherein, 11-outer tube, 12-axostylus axostyle, 13-link, 14-piston ring, 141-loop portions, 142-skirt section;

Fig. 2 is the decomposing schematic representation of a kind of fender pile structure of embodiment;

Fig. 3 is the part detailed annotation figure of Fig. 2;

Fig. 4 is the combination schematic diagram of a kind of fender pile structure of embodiment;

Fig. 5 is the action schematic diagram that the push rod of a kind of fender pile structure of embodiment inwardly advances;

Fig. 6 is the action schematic diagram that the push rod of a kind of fender pile structure of embodiment stretches out;

Wherein, 3-outer tube, 31-containing space, 32-decompression mechanism, 4-push rod, 41-body, 42-is driven portion, 43-Piston connecting portion, 431-first bounding means, 432-second bounding means, 433-first end, 434-second end, 435-annular recess, 44-supporting element, 5-piston piece, 51-open-work, 6-piston fastener, 61-gas flow, 611-first opening, 612-second opening, 62-profile groove, 63-calvus, A1-air, A2-air.

Embodiment

In order to deepen the understanding of the present invention, be described in further detail the present invention below in conjunction with drawings and Examples, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.

Embodiment

Refer to shown in Fig. 2, Fig. 4, a kind of fender pile structure, it comprises:

One outer tube 3, a containing space 31 is provided with in this outer tube 3, this outer tube 3 one end is open shape, this outer tube 3 the other end is provided with a decompression mechanism 32, this decompression mechanism 32 specifically can be pore or is air throttle, illustrate with pore in the graphic middle system of the present embodiment, the detail structure of this air throttle is known by those skilled in the art again, repeats no more in this;

One push rod 4, this push rod 4 has a body 41, these body 41 two ends extend respectively and are provided with one and are driven portion 42 and a Piston connecting portion 43, wherein this Piston connecting portion 43 is be arranged in the containing space 31 of this outer tube 3 slippingly, this is driven 42, portion and protrudes from outside this outer tube 3, and as shown in Figure 4, this is driven portion 42 can for combine with the movable objects (such as slide rail or door body) of outside or power is connected, push rod 4 can be driven to be shifted to play cushioning effect in order to do making this movable objects, is possess in art usually to know known by the knowledgeable at this this push rod 4 and this movable objects in conjunction with group mode of establishing, therefore repeat no more, this body 41 is provided with a supporting element 44 with the joining place of Piston connecting portion 43 again, in the present embodiment, this supporting element 44 is collar flange, preferably, the external diameter of this supporting element 44 can be slightly less than the internal diameter of this outer tube 3 inwall, by this, rock because producing when excesssive gap causes push rod 4 to move in order to do can be avoided both, and the smooth and easy stability of action can be improved, one first bounding means 431 is provided with again between this Piston connecting portion 43 and supporting element 44, shown in Fig. 3, this first bounding means 431 has the first end be connected with this Piston connecting portion 43 433 and second end 434 be connected with this supporting element 44, this first bounding means 431 becomes large from the external diameter system of first end 433 to the second end 434 gradually by little again, and the maximum outside diameter of this first bounding means 431 is less than the external diameter of this supporting element 44, in the present embodiment, the funnel-like of this first bounding means 432 entirety roughly in cross setting, in addition, this Piston connecting portion 43 end is provided with one second bounding means 432, in the present embodiment, the circular cone column of this second bounding means 432 entirety roughly in cross setting, in addition, an annular recess 435 can be provided with further between this Piston connecting portion 43 and second bounding means 432,

One piston piece 5, this piston piece 5 is hollow cylindrical, please also refer to shown in Fig. 3 and Fig. 5, it is peripheral that this piston piece 5 is arranged in its Piston connecting portion 43 of push rod 4, this piston piece 5 outer surface can touch mutually with outer tube 3 inwall, in the present embodiment, this piston piece 5 is rubber sleeve, this piston piece 5 is open shape compared with the one end away from push rod 4, one end of the closer push rod 4 of this piston piece 5 is closed shape and is provided with an open-work 51, this open-work 51 wears this Piston connecting portion 43, and the internal diameter of this open-work 51 is not more than the maximum outside diameter of the first bounding means 431, in the present embodiment, the geomery of this open-work 51 is corresponding with the geomery of the first at least part of bounding means 431, by this, peripheral in order to do making this open-work 51 can be set in this first bounding means 431, this first bounding means 431 pairs of piston pieces 5 can be made simultaneously to be formed and unidirectional to fasten limit effect, and as shown in Figure 5,

One piston fastener 6, this piston fastener 6 is hollow cylindrical, please also refer to shown in Fig. 3 and Fig. 5, it is peripheral that this piston fastener 6 is arranged in its Piston connecting portion 43 of push rod 4, and this piston fastener 6 is sheathed on this piston piece 5 inside, the gas flow 61 that one runs through these piston fastener 6 two ends is provided with in this piston fastener 6, this gas flow 61 is provided with one first opening 611 in one end of the closer push rod 4 of piston fastener 6, the internal diameter of this first opening 611 and gas flow 61 all can slightly larger than the external diameter of this Piston connecting portion 43 and the second bounding means 432, by this, peripheral in order to do making its gas flow 61 of this piston fastener 6 can be arranged in this Piston connecting portion 43 smoothly by the first opening 611 direction, this gas flow 61 is provided with one second opening 612 in piston fastener 6 compared with the one end away from push rod 4, the internal diameter system of this second opening 612 is slightly less than the external diameter of this Piston connecting portion 43 and the second limited part 432, this piston retainer component 6 offers several profile groove 62 around the second opening 612 again, this piston retainer component 6 is made to form several calvus 63 in the second opening 612 surrounding, by this, this calvus 63 can become elastic structure, and make its second opening 612 of this piston fastener 6 still can pass through the second bounding means 432, with season respectively this calvus 63 clip in its annular recess 435 of this push rod 4, and as shown in Figure 5,

Refer to shown in Fig. 2 and Fig. 5, in order to do when this push rod 4 inwardly advances, touch mutually with outer tube 3 inwall by this piston piece 5 outer surface, and the internal diameter of this open-work 51 is not more than the maximum outside diameter of the first bounding means 431, and make this open-work 51 can be subject to fastening and forming sealing effect of the first bounding means 431, now, air A1 in outer tube 3 can be extruded by piston piece 5 and produce resistance, and then make this creation reach cushioning effect, it should be noted that at this, through further that the geomery of open-work 51 is corresponding with the geomery of the first at least part of bounding means 431, thus its open-work 51 of piston piece 5 can fit to reach better sealing effect with its both first bounding means 431 of push rod 4 more adaptedly, lose heart from the place beyond decompression mechanism 32 during fender pile start in order to do avoiding, and then make this creation can reach the effect significantly improving production reliability,

Referring again to shown in Fig. 2 and Fig. 6, in order to do when this push rod 4 stretches out, its first bounding means 431 of this push rod 4 will be separated with its open-work 51 of piston piece 5, and make this open-work 51 and the first bounding means 431 can produce space between the two, simultaneously, external diameter by this supporting element 44 is slightly less than the internal diameter of outer tube 3 inwall, the internal diameter of its first opening 611 of this piston retainer component 6 and gas flow 61 is slightly larger than the external diameter of this Piston connecting portion 43, so, the air A2 in the part external world can enter outer tube 3 inside by its decompression mechanism 32 of this outer tube 3, simultaneously, the air A2 in another part external world also can be entered by the open end of outer tube 3, and sequentially flow through between this supporting element 44 and outer tube 3 inwall, between open-work 51 and the first bounding means 431, and the space between its gas flow 61 of piston fastener 6 and its piston linking department 43 of push rod 4, shown in Fig. 3, finally enter outer tube 3 via its profile groove 62 of this piston fastener 6 or the second opening 612 more inner, thus, this creation can be avoided when push rod 4 stretches out, the intake velocity deficiency of decompression mechanism 32 or air inflow are very little, outer tube 3 inside is caused to form vacuum, cause the disappearance pulling work to have some setbacks outside push rod 4, in order to do can the fluent movements degree of improving product, and then make this creation can have the effect reaching better production reliability and convenience of use concurrently, in addition, it is worth mentioning that, internal diameter system by this its second opening 612 of piston fastener 6 is slightly less than the external diameter of this its second limited part 432 of push rod 4, when push rod 4 stretches out, its calvus 63 of this piston fastener 6 can be driven by piston piece 5 and fasten in this second limited part 432, and this piston piece 5 can be avoided to come off or be separated with push rod 4, the unidirectional of another direction can be realized to piston piece 5 in order to do making this second limited part 432 and piston fastener 6 and fasten limit effect.

Above-described embodiment should not limit the present invention by any way, and the technological scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection scope of the present invention.

Claims

1. a fender pile structure, is characterized in that: it comprises: an outer tube, and this outer tube one end is open shape, and this outer tube the other end is provided with a decompression mechanism, one push rod, this push rod has a body, these body two ends extend respectively and are provided with one and are driven portion and a Piston connecting portion, this Piston connecting portion system is arranged in this outer tube slippingly, this portion of being driven then protrudes from outside this outer tube, the joining place of this body and Piston connecting portion is provided with a supporting element again, one first bounding means is provided with again between this Piston connecting portion and supporting element, this first bounding means has a first end be connected with this Piston connecting portion and second end be connected with this supporting element, this first bounding means becomes large from first end to the external diameter system of the second end gradually by little again, and the maximum outside diameter of this first bounding means is less than the external diameter of this supporting element, in addition, this Piston connecting portion end is provided with one second bounding means, an annular recess is provided with between this Piston connecting portion and the second bounding means, one piston piece, this piston piece is hollow cylindrical, it is peripheral that this piston piece is arranged in its Piston connecting portion of push rod, this piston piece outer surface touches mutually with outer tube wall, this piston piece is open shape compared with the one end away from push rod, one end of the closer push rod of this piston piece is closed shape and is provided with an open-work, and this open-work wears this Piston connecting portion, and the internal diameter of this open-work is not more than the maximum outside diameter of the first bounding means, one piston fastener, this piston fastener is hollow cylindrical, and it is peripheral that this piston fastener is arranged in its Piston connecting portion of push rod, and this piston fastener is sheathed on this piston piece inside.

2. a kind of fender pile structure according to claim 1, it is characterized in that: in described piston fastener, be provided with the gas flow that runs through these piston fastener two ends, this gas flow is provided with one first opening in one end of the closer push rod of piston fastener, and the internal diameter of this first opening and gas flow is all slightly larger than the external diameter of this Piston connecting portion and the second bounding means.

3. a kind of fender pile structure according to claim 1 and 2, it is characterized in that: described gas flow is provided with one second opening in piston fastener compared with the one end away from push rod, the internal diameter system of this second opening is slightly less than the external diameter of this Piston connecting portion and the second limited part, this piston retainer component offers several profile groove in the second around openings again, makes this piston retainer component form several calvus in the second around openings.

4. a kind of fender pile structure according to claim 1, it is characterized in that: the overall funnel-like roughly in cross setting of the first described bounding means, and the geomery of this open-work is corresponding with the geomery of the first at least part of bounding means.

5. a kind of fender pile structure according to claim 1, is characterized in that: described decompression mechanism is pore or is air throttle.