CN103322116A - Buffering bar with dustproof and anti-releasing functions - Google Patents
Buffering bar with dustproof and anti-releasing functions Download PDFInfo
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- CN103322116A CN103322116A CN2013102997975A CN201310299797A CN103322116A CN 103322116 A CN103322116 A CN 103322116A CN 2013102997975 A CN2013102997975 A CN 2013102997975A CN 201310299797 A CN201310299797 A CN 201310299797A CN 103322116 A CN103322116 A CN 103322116A
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- push rod
- gas channel
- outer tube
- fender pile
- piston
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Abstract
The invention discloses a buffering bar with dustproof and anti-releasing functions. The buffering bar comprises an outer pipe, a pushing rod, a piston mechanism and a sealing cover. An accommodating space is formed inside the outer pipe. The two ends of the pushing rod are provided with a piston connection part and a driven part respectively, the piston connection part penetrates through the accommodating space of the outer pipe in a sliding mode, a first guiding groove is formed inside the pushing rod, and a second guiding groove is formed at one end, connected with the piston connection part, of the first guiding groove in an extending mode. The piston mechanism is fixed on one side of the piston connection part of the pushing rod in a combination mode, the piston mechanism is internally provided with a hollow rubber sleeve and an air throttle, and an air channel assembly is arranged inside the air throttle. The sealing cover is fixed on the outer pipe. The air inside the outer pipe can flow towards different directions under the action of the pushing rod, an appropriate pressure releasing effect is achieved, the air flows in the outer pipe and is not contacted with the outside, the air is prevented from leaking to achieve the dustproof and water-proof effects, the structure is simplified, and the service life of a product is prolonged.
Description
Technical field
The present invention relates to a kind of fender pile structure, espespecially a kind of dust that prevents enters to improve the fender pile structure of life of product.
Background technique
In the prior art, fender pile is between a kind of object of being located at two relative movement, the device that is used for its speed of related movement of buffering, to reach the collision power that reduces between the object or the effect that reduces noise, but for example be applied to see also and Figure 1 shows that a known fender pile on the door body or drawer sliding rail of automatic returning, it comprises: a body 10, be provided with containing space 101 in this body 10, these body 10 two ends have respectively opening 102,103; One mandrel rod 11, these mandrel rod 11 1 ends are provided with elastomer 12, and this elastomer 12 is arranged in its containing space 101 by body 10 1 ends; One lid 13, this lid 13 is fixed in body 10 the other ends, this lid 13 is provided with at least one relief hole 131 again, by this, please cooperate again consult shown in Figure 2, in order to do when this mandrel rod 11 moves towards the direction near body 10, these elastomer 12 outer surfaces namely can rub body 10 inwall and produce resistance, gas in this body 10 its containing spaces 101 also can increase its air pressure because being compressed moment simultaneously, and can produce the buffer damping effect, the gases in this moment this containing space 101 also can be discharged by lid 13 its relief holes 131, and can appropriate pressure release, in order to do can guaranteeing that mandrel rod 11 moves smoothly, and then make the purpose that this fender pile can reach provides cushioning effect.
The fender pile that should commonly use, though cushioning effect can be provided, but in course of action, gas in this containing space 101 can flow out body 10 outsides, the gas of body 10 outsides also can flow in this body 10, so the dust in the ambient air is dirty also may enter body 10 inside thereupon, namely this fender pile does not have dustproof or water-proof function yet, in addition, if when scribbling the grease that increases cushioning effect such as damping oil on this elastomer 12, to more easily cause dust to be stained with glutinous, and then cause application range of products to reduce in limited and working life, so, how to develop the fender pile structure of a kind of features simple structure and tool dustproof and waterproof effect, be the technical difficulties place of this case institute wish solution.
Summary of the invention
Because existing fender pile structure, because gas in the body communicates with the external world, cause product easily to enter dirt and affect working life, so the present invention's purpose is to develop the fender pile structure of a kind of features simple structure and tool dustproof and waterproof effect.
For reaching above purpose, the present invention is the fender pile that provides a kind of tool preventing dust to let out, and it comprises: an outer tube is provided with a containing space in this outer tube; This outer tube has the second end that a first end and that is closed shape is open shape; One push rod, these push rod two ends are respectively equipped with a piston joint and and are driven section, this piston joint system is arranged in the containing space of this outer tube slippingly, this section of being driven then protrudes from outside the second end of this outer tube, this push rod is provided with a combined section in an end inside that is provided with the piston joint, be provided with one first guiding gutter in this combined, the end extension that this first guiding gutter and piston joint join is provided with one second guiding gutter; One piston mechanism, this piston mechanism is in conjunction with being fixed in its piston joint one side of this push rod, this piston mechanism includes hollow rubber cover and an air throttle, this hollow rubber cover outer surface touches mutually with outer tube wall, it is inner that this air throttle is set in the hollow rubber cover, and its combined of this air throttle and push rod wear fixing mutually, are provided with a gas channel assembly in this air throttle; One sealing cover, the sealing lid sets firmly mutually with outer tube, sealing is covered with a push rod movable span again, its system of section of being driven of this push rod passes this push rod movable span and protrudes from outside the sealing lid, the internal diameter of this push rod movable span equals the external diameter of push rod again, by this, in order to do making the airtight conditions that keeps gapless between this push rod and the sealing cover.
In a preferred embodiment of the present invention, wherein the external diameter of this piston joint is greater than the external diameter of this push rod, and the external diameter of this piston joint is slightly less than the internal diameter of this outer tube, by this, forms the water conservancy diversion gap between its piston joint of this push rod and the outer tube wall and make.
In a preferred embodiment of the present invention, wherein this air throttle has a strip body and a connecting part that is connected with this strip body, its combined of this connecting part and push rod wear fixing mutually, and the length of more combined section of the length of this connecting part system is short again.
In a preferred embodiment of the present invention, wherein this gas channel assembly includes one and is positioned at intrinsic the first gas channel of this strip and the second gas channel and the 3rd gas channel respectively at this connecting part, the perforation that sequentially is connected of this first gas channel, the second gas channel and the 3rd gas channel, and the bore of this first gas channel is greater than the bore of the second gas channel, and the bore of this second gas channel is greater than the bore of the 3rd gas channel.
In a preferred embodiment of the present invention, wherein still further be provided with a solar term hole between this second gas channel and the 3rd gas channel, these two ends, solar term hole are connected with the 3rd gas channel with this second gas channel respectively, and the bore in this solar term hole is less than the bore of the 3rd gas channel.
In a preferred embodiment of the present invention, wherein this combined is to prolong its cylindric shrinkage pool that axially arranges of push rod, and this strip body is hollow circuit cylinder, and this connecting part is cylindric axostylus axostyle.
In a preferred embodiment of the present invention, wherein this hollow rubber cover outer surface is provided with at least one strip oil storage section and at least one ring-type oil storage section.
In a preferred embodiment of the present invention, wherein this hollow rubber cover front end is provided with a contacting part, and this contacting part outer surface touches mutually with outer tube wall.
In a preferred embodiment of the present invention, wherein this first guiding gutter system prolongs its axial setting of push rod, and this second guiding gutter system prolongs push rod, and it radially arranges.
In a preferred embodiment of the present invention, wherein this strip body further is provided with at least one holes.
The present invention is by the structural design of air throttle and various conduction pipe, and air in the outer tube can be flowed and reach appropriate pressure release effect towards different direction when push rod moves, and air all flows in outer tube and does not contact with the external world, and can avoid air to leak to reach the effect of dustproof and waterproof, and then make the present invention can reach the effect in simplified structure and improving product working life.
Description of drawings
Fig. 1 is the decomposing schematic representation of prior art fender pile.
Fig. 2 is the action schematic diagram of prior art fender pile.
Fig. 3 is the decomposing schematic representation of fender pile of the present invention.
Fig. 4 is the partial schematic diagram of the deflector of its mandrel rod of the present invention.
Fig. 5 is the partial schematic diagram of its air throttle of the present invention.
The combination schematic diagram of Fig. 6 fender pile of the present invention.
The action schematic diagram that its push rod of Fig. 7 fender pile of the present invention outwards stretches.
Fig. 8 is the action schematic diagram of the flowing gas state of Fig. 7.
Fig. 9 is the action schematic diagram that the present invention is combined with the slide rail return device.
Figure 10 is the action schematic diagram of its push rod of the present invention flowing gas state when inwardly advancing.
The mark of each parts is as follows in the accompanying drawing: 10, body; 101, containing space; 102, opening; 103, opening; 11, mandrel rod; 12, elastomer; 13, lid; 131, relief hole; 3, outer tube; 31, first end; 32, the second end; 33, containing space; 35, water conservancy diversion gap; 4, push rod; 41, piston joint; 42, be driven section; 43, combined section; 431, the first guiding gutter; 432, the second guiding gutter; 5, piston mechanism; 51, hollow rubber cover; 511, strip oil storage section; 512, ring-type oil storage section; 513, contacting part; 52, air throttle; 53, strip body; 531, first end; 532, the second end; 533, holes; 54, connecting part; 55, gas channel assembly; 551, the first gas channel; 552, the second gas channel; 553, the 3rd gas channel; 554, solar term hole; 6, sealing cover; 61, push rod movable span; 7, slide rail return device.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
See also Fig. 3 and shown in Figure 6, the fender pile that the present invention system provides a kind of tool preventing dust to let out, it comprises:
One outer tube 3 is provided with a containing space 33 in this outer tube 3, this outer tube 3 has the second end 32 that a first end 31 and that is closed shape is open shape;
One push rod 4, these push rod 4 two ends are respectively equipped with a piston joint 41 and and are driven section 42, this piston joint 41, being driven section 42 connects with this push rod 4 respectively, in the present embodiment, this push rod 4, piston joint 41 is one-body molded with being driven section 42, wherein this piston joint 41 is to be arranged in slippingly in the containing space 31 of this outer tube 3, this is driven outside the second end 32 that 42 in section protrudes from this outer tube 3, and as shown in Figure 6, this is driven, and section 42 can supply to combine with the movable objects (for example slide rail or door body) of outside or power is connected, be shifted to bring into play cushioning effect in order to do making this movable objects can drive push rod 4, organizing the mode of establishing in this this push rod 4 and the combination of this movable objects is to possess in the affiliated technical field to know that usually the knowledgeable knows, therefore repeat no more, the external diameter of this piston joint 41 can be greater than the external diameter of this push rod 4 again, and the external diameter of this piston joint 41 can be slightly less than the internal diameter of this outer tube 3, by this, please cooperate again consult shown in Figure 8, can form water conservancy diversion gap 35 between these push rod 4 its piston joints 41 and outer tube 3 inwalls and make, in addition, please consult again shown in Figure 4, this push rod 4 is provided with one combined 43 in an end inside that is provided with piston joint 41, in the present embodiment, this combined 43 can be the cylindric shrinkage pools that prolong push rod 4 its axial settings, be provided with one first guiding gutter 431 in this combined 43 again, preferably, this first guiding gutter 431 is to prolong push rod 4 its axial settings, this first guiding gutter 431 is provided with one second guiding gutter 432 with the end extension that piston joint 41 joins again, preferably, this second guiding gutter 432 is to prolong push rod 4 it radially arranges, and as shown in Figure 8.
One piston mechanism 5, this piston mechanism 5 binds to close and is fixed in this push rod 4 its piston joint 41 1 sides, this piston mechanism 5 includes hollow rubber cover 51 and one air throttle 52, this hollow rubber overlaps 51 front ends and is open shape, these hollow rubber cover 51 ends are for closed shape and be provided with an open-work 514, this hollow rubber overlaps 51 front ends and is provided with a contacting part 513, these contacting part 513 outer surfaces can touch mutually with the inwall of outer tube 3, this air throttle 52 is set in hollow rubber and overlaps 51 inside, this air throttle 52 has a strip body 53 and a connecting part 54 again, this strip body 53 has first end 531 and the second end 532, these strip body 51 its first ends 531 are connected with connecting part 54, in the present embodiment, this strip body 53 is one-body molded with connecting part 54, this strip body 53 can be a hollow circuit cylinder, and these strip body 53 its second ends 532 are open shape, this connecting part 54 can be a cylindric axostylus axostyle again, the external diameter of this connecting part 54 equals the internal diameter of these hollow rubber cover 51 its open-works 514 in addition, please cooperate consult shown in Figure 8, these air throttle 52 its strip bodies 53 are to be worn by connecting part 54 1 ends to be fixed in this hollow rubber cover 51, and this connecting part 54 is to stretch through this open-work 514 and protrude from outside this hollow rubber cover 51, again these air throttle 52 its connecting parts 54 and push rod 4 its combined 43 wear mutually fixing, preferably, the length that the length system of this connecting part 54 is more combined 43 is short, in addition, please cooperate again consult shown in Figure 5, this strip body 53 can further be provided with at least one holes 533, be provided with a gas channel assembly 55 in this air throttle 52 in addition, this gas channel assembly 55 be connect this strip body 53 with combined 54, in the present embodiment, this gas channel assembly 55 includes the first gas channel 551 and second gas channel 552 that lays respectively at this connecting part 54 and the 3rd gas channel 553 that is positioned at this strip body 53, this first gas channel 551 wherein, the perforation that sequentially is connected of the second gas channel 552 and the 3rd gas channel 553, and the bore of this first gas channel 551 is greater than the bore of the second gas channel 552, the bore of this second gas channel 552 is greater than the bore of the 3rd gas channel 553, in addition, still can further be provided with a solar term hole 554 between this second gas channel 552 and the 3rd gas channel 553, these 554 two ends, solar term hole are connected with the 3rd gas channel 553 with this second gas channel 552 respectively, and the bore in this solar term hole 554 is less than the bore of the 3rd gas channel 553, in addition, this hollow rubber overlaps 51 outer surfaces can be provided with at least one strip oil storage section 511 and at least one ring-type oil storage section 512, this strip oil storage section 511 all can be groove with ring-type oil storage section 512, by this, and can being coated with ring-type oil storage section 512, this strip oil storage section 511 is equipped with lubricant oil, in order to do having lubrication effect to promote the present invention's action smooth degree.
One sealing cover 6, sealing lid 6 sets firmly mutually with outer tube 3 its second ends 32, sealing lid 6 is provided with a push rod movable span 61 again, it is driven this push rod 4 section 42 and passes this push rod movable span 61 and protrude from outside the sealing lid 6, the internal diameter of this push rod movable span 61 can equal the external diameter of push rod 4 again, by this, in order to do making the airtight conditions that can keep gapless between this push rod 4 and the sealing cover 6.
See also Fig. 6 and shown in Figure 7, in order to do outwards stretching when this push rod 4, and make these piston mechanism 5 its hollow rubber sleeves 51 by the first end 31 of outer tube 3 towards near the second end 32 directions displacement of outer tube 3 time, air in the containing space 33 between this push rod 4 and the outer tube 3 will be squeezed, at this moment, please consult again Fig. 7 and shown in Figure 8, these air will sequentially pass through this water conservancy diversion gap 35, the second guiding gutter 432, the first guiding gutter 431, the 3rd gas channel 553, the second gas channel 552 and the first gas channel 551 and flow in the containing space 33 between this hollow rubber cover 51 and outer tube 3 its first ends 31, simultaneously, the contacting part 513 of these hollow rubber cover 51 its front ends also can omit because of the active force of air pressure to inside contracting, make its with outer tube 3 inwalls between temporarily do not touch mutually and form the slit, therefore also can pass through for air, by this, can avoid the containing space 33 between this hollow rubber cover 51 and outer tube 3 its first ends 31 to produce vacuum state, but to guarantee the fender pile regular event, please consult again and Figure 9 shows that the present invention and outside return device such as door body return device or slide rail return device 7 are assembled rear schematic diagram, the detail structure of this body return device or slide rail return device 7 wherein, operating principle and all belong to prior art and non-this case technical characteristics with the mode that is assembled of door body or drawer sliding rail, specifically can be with reference to Taiwan patent M441705 number " door body return buffering mechanism " or M426336 number cases such as " the location return devices (two) of slide rail ", therefore, when this slide rail return device 7 drove this push rod 4 outside stretching, the present invention can guarantee that these slide rail return device 7 actions are smoothly smooth and easy; Again when these slide rail return device 7 drive push rods 4 inwardly push back, please cooperate again and consult Fig. 9 and shown in Figure 10, air in the containing space 33 between this hollow rubber cover 51 and outer tube 3 its first ends 31 will be squeezed at this moment, and can comply with and aforementioned opposite operating principle, sequentially by this first gas channel 551, the second gas channel 552, the 3rd gas channel 553, the first guiding gutter 431, the second guiding gutter 432 and water conservancy diversion gap 35 and flow back in the containing space 33 between this push rod 4 and the outer tube 3, simultaneously these hollow rubber cover 51 its contacting parts 513 meetings are slightly expanded because of the active force with outer tube 3 interior wall frictions and air pressure and are produced buckling deformation, in addition, be provided with at least one holes 533 by these air throttle 52 its strip bodies 53, therefore air is by this first gas channel 551 time, the part air also can pass this holes 533 and hollow rubber sleeve 51 is exerted pressure, and make this hollow rubber overlap 51 inflatable and with outer tube 3 interior wall frictions, therefore can produce larger buffering resistance, in order to do making the present invention provide the buffering function to this slide rail return device 7, and then the present invention can be returned in drawer sliding rail or door body reach the purpose of avoiding the parts collision or reducing audible noise when resetting.
Please consult again Fig. 3 and shown in Figure 6, the present invention is by the structural design of air throttle 52 with various conduction pipes, and air in the outer tube 3 can be flowed and reach appropriate pressure release effect towards different direction when push rod 4 action, and air does not all contact with the external world in outer tube 3 interior flowing, and can avoid air to leak to reach the effect of dustproof and waterproof, simultaneously, be cylindrical by these air throttle 52 its strip bodies 53 with connecting part 54 again, can be easy to processing therefore structure shape is simple, and then make the present invention can reach the effect in simplified structure and improving product working life; In addition, be provided with strip body 53 by this air throttle 52 again, and strip body 53 is set in this hollow rubber cover 51, in order to do making this strip body 53 provide support effect to hollow rubber sleeve 51, and can prevent or avoid this hollow rubber cover 51 excessive deformation in action, and then make the present invention can have the effect of improving product reliability concurrently; In addition, see also shown in Figure 5, again by being provided with this solar term hole 554 between these air throttle 52 its second gas channels 552 and the 3rd gas channel 553, and the bore in this solar term hole 554 is less than the bore of the 3rd gas channel 553, and can set by moderate change the caliber size in each gas channel and solar term hole 554, be speed or the air displacement of capable of regulating pressure release exhaust, and can adjust according to user's request the buffer damping size of fender pile, and then make the present invention can have the effect of improving product applicability concurrently.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. fender pile that the tool preventing dust is let out is characterized in that: comprise: an outer tube, be provided with a containing space in this outer tube, and this outer tube has the second end that a first end and that is closed shape is open shape;
One push rod, these push rod two ends are respectively equipped with a piston joint and and are driven section, this piston joint system is arranged in the containing space of this outer tube slippingly, this section of being driven then protrudes from outside the second end of this outer tube, this push rod is provided with a combined section in an end inside that is provided with the piston joint, be provided with one first guiding gutter in this combined, the end extension that this first guiding gutter and piston joint join is provided with one second guiding gutter;
One piston mechanism, this piston mechanism is in conjunction with being fixed in its piston joint one side of this push rod, this piston mechanism includes hollow rubber cover and an air throttle, this hollow rubber cover outer surface touches mutually with outer tube wall, it is inner that this air throttle is set in the hollow rubber cover, and its combined of this air throttle and push rod wear fixing mutually, are provided with a gas channel assembly in this air throttle;
One sealing cover, the sealing lid sets firmly mutually with its second end of outer tube, sealing is covered with a push rod movable span again, its system of section of being driven of this push rod passes this push rod movable span and protrudes from outside the sealing lid, the internal diameter of this push rod movable span equals the external diameter of push rod again, by this, in order to do making the airtight conditions that keeps gapless between this push rod and the sealing cover.
2. the fender pile let out of tool preventing dust according to claim 1, it is characterized in that: wherein the external diameter of this piston joint is greater than the external diameter of this push rod, and the external diameter of this piston joint is slightly less than the internal diameter of this outer tube, by this, make formation water conservancy diversion gap between its piston joint of this push rod and the outer tube wall.
3. the fender pile let out of tool preventing dust according to claim 1, it is characterized in that: wherein this air throttle has a strip body and a connecting part that is connected with this strip body, its combined of this connecting part and push rod wear fixing mutually, and the length of more combined section of the length of this connecting part system is short again.
4. the fender pile let out of tool preventing dust according to claim 3, it is characterized in that: wherein this gas channel assembly includes one and is positioned at intrinsic the first gas channel of this strip and the second gas channel and the 3rd gas channel respectively at this connecting part, the perforation that sequentially is connected of this first gas channel, the second gas channel and the 3rd gas channel, and the bore of this first gas channel is greater than the bore of the second gas channel, and the bore of this second gas channel is greater than the bore of the 3rd gas channel.
5. the fender pile let out of tool preventing dust according to claim 4, it is characterized in that: wherein still further be provided with a solar term hole between this second gas channel and the 3rd gas channel, these two ends, solar term hole are connected with the 3rd gas channel with this second gas channel respectively, and the bore in this solar term hole is less than the bore of the 3rd gas channel.
6. the fender pile let out of tool preventing dust according to claim 3 is characterized in that: wherein this combined this strip body is hollow circuit cylinder in order to prolong its cylindric shrinkage pool that axially arranges of push rod, this connecting part is cylindric axostylus axostyle.
7. the fender pile let out of tool preventing dust according to claim 1, it is characterized in that: wherein this hollow rubber cover outer surface is provided with at least one strip oil storage section and at least one ring-type oil storage section.
8. the fender pile let out of tool preventing dust according to claim 1, it is characterized in that: wherein this hollow rubber cover front end is provided with a contacting part, and this contacting part outer surface touches mutually with outer tube wall.
9. the fender pile let out of tool preventing dust according to claim 1, it is characterized in that: wherein this first guiding gutter system prolongs its axial setting of push rod, and this second guiding gutter system prolongs push rod, and it radially arranges.
10. the fender pile let out of tool preventing dust according to claim 1, it is characterized in that: wherein this strip body further is provided with at least one holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299797.5A CN103322116B (en) | 2013-07-17 | 2013-07-17 | The fender pile that a kind of tool preventing dust is let out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299797.5A CN103322116B (en) | 2013-07-17 | 2013-07-17 | The fender pile that a kind of tool preventing dust is let out |
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| Publication Number | Publication Date |
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| CN103322116A true CN103322116A (en) | 2013-09-25 |
| CN103322116B CN103322116B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310299797.5A Active CN103322116B (en) | 2013-07-17 | 2013-07-17 | The fender pile that a kind of tool preventing dust is let out |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195810A (en) * | 2020-09-22 | 2021-01-08 | 靳书文 | Municipal administration is with formula of taking a breath road surface deceleration strip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007111016A1 (en) * | 2006-03-27 | 2007-10-04 | Nifco Inc. | Speed responsive air damper |
| CN201772008U (en) * | 2010-07-22 | 2011-03-23 | 阮腾仪 | Air pressure buffer rod |
| US20120118689A1 (en) * | 2009-05-14 | 2012-05-17 | Nifco Inc. | Air damper |
| CN203413012U (en) * | 2013-07-17 | 2014-01-29 | 苏州升德精密电气有限公司 | Buffer rod with functions of dust prevention and escape prevention |
-
2013
- 2013-07-17 CN CN201310299797.5A patent/CN103322116B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007111016A1 (en) * | 2006-03-27 | 2007-10-04 | Nifco Inc. | Speed responsive air damper |
| US20120118689A1 (en) * | 2009-05-14 | 2012-05-17 | Nifco Inc. | Air damper |
| CN201772008U (en) * | 2010-07-22 | 2011-03-23 | 阮腾仪 | Air pressure buffer rod |
| CN203413012U (en) * | 2013-07-17 | 2014-01-29 | 苏州升德精密电气有限公司 | Buffer rod with functions of dust prevention and escape prevention |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195810A (en) * | 2020-09-22 | 2021-01-08 | 靳书文 | Municipal administration is with formula of taking a breath road surface deceleration strip |
| CN112195810B (en) * | 2020-09-22 | 2022-04-26 | 无锡天工建设有限公司 | Municipal administration is with formula of taking a breath road surface deceleration strip |
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| Publication number | Publication date |
|---|---|
| CN103322116B (en) | 2015-09-09 |
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