CN203413012U

CN203413012U - Buffer rod with functions of dust prevention and escape prevention

Info

Publication number: CN203413012U
Application number: CN201320424756.XU
Authority: CN
Inventors: 廖瑞忠
Original assignee: Suzhou Shengde Precise Electric Co Ltd
Current assignee: Suzhou Shengde Precise Electric Co Ltd
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2014-01-29
Anticipated expiration: 2023-07-17

Abstract

The utility model discloses a buffer rod with functions of dust prevention and escape prevention, and the buffer rod comprises an outer pipe, a push rod, a piston mechanism, and a seal cover, wherein an accommodating space is arranged in the outer pipe; two ends of the push rod are respectively provided with a piston connecting part and a driven part, the piston connecting part is capable of slidably penetrating in the accommodating space of the outer pipe, a first diversion trench is arranged in the push rod, and one end, which is connected with the piston connecting part, of the first diversion trench is extended to be provided with a second diversion trench; the piston mechanism is combined and fixed at the piston connecting part side of the push rod, and comprises a hollow rubber sleeve and a throttle valve, and a gas passage assembly is arranged in the throttle valve; the seal cover is fixedly connected with the outer pipe. According to the buffer rod disclosed by the utility model, the air in the outer pipe can flow towards different directions in the action period of the push rod so as to achieve a moderate decompression effect, and the air always flows in the outer pipe and cannot contact with the outside so as to prevent the air from escaping to achieve the aim of dust prevention and water prevention, thereby achieving the aims of simplifying structure and improving the service life of the product.

Description

The fender pile that tool preventing dust is let out

Technical field

The utility model relates to a kind of fender pile structure, espespecially a kind ofly prevents that dust from entering to improve the fender pile structure of life of product.

Background technique

In prior art, fender pile is between a kind of object of being located at two relative movement, for cushioning the device of its speed of related movement, to reach the collision power reducing between object or the effect that reduces noise, for example be applied to can automatic returning door body or drawer sliding rail on, refer to and Figure 1 shows that a known fender pile, it comprises: a body 10, in this body 10, be provided with containing space 101, these body 10 two ends have respectively opening 102,103, one mandrel rod 11, these mandrel rod 11 one end are provided with elastomer 12, and this elastomer 12 is arranged in its containing space 101 by body 10 one end, one lid 13, this lid 13 is fixed on body 10 the other ends, this lid 13 is provided with at least one relief hole 131 again, by this, shown in Fig. 2, in order to do when this mandrel rod 11 moves towards the direction near body 10, these elastomer 12 outer surfaces can rub body 10 inwall and produce resistance, gas in these body 10 its containing spaces 101 also can increase its air pressure because being compressed moment simultaneously, and can produce buffer damping effect, now the gas in this containing space 101 also can be discharged by lid 13 its relief holes 131, and can appropriate pressure release, in order to do guaranteeing that mandrel rod 11 moves smoothly, and then make this fender pile can reach the object that cushioning effect is provided.

The fender pile that this is conventional, 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 ambient air is dirty also may enter body 10 inside thereupon, this fender pile does not have dustproof or water-proof function yet, in addition, if scribble on this elastomer 12 while increasing the grease of cushioning effect as damping oil, 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.

Model utility content

Because existing fender pile structure because gas in body communicates with the external world, cause product easily enter dirt and affect working life, so the object of the utility model is to develop the fender pile structure of a kind of features simple structure and tool dustproof and waterproof effect.

For reaching above object, the fender pile that the utility model system provides a kind of tool preventing dust to let out, 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 portion, this piston joint system is arranged in the containing space of this outer tube slippingly, this portion of being driven protrudes from outside the second end of this outer tube, this push rod is provided with a combined portion in the inside, one end that is provided with piston joint, in this combined portion, be provided with one first guiding gutter, one 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 on its piston joint one side of this push rod, this piston mechanism includes a 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 hollow rubber cover, and its combined portion of this air throttle and push rod wears fixing mutually, is provided with a gas channel assembly in this air throttle; One sealing cover, sealing lid sets firmly mutually with outer tube, sealing is covered with a push rod movable span again, its portion of being driven of this push rod is through this push rod movable span and protrudes from outside 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 the airtight conditions that makes to keep between this push rod and sealing cover gapless.

In a preferred embodiment of the present utility model, 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, and make to form water conservancy diversion gap between its piston joint of this push rod and outer tube wall.

In a preferred embodiment of the present utility model, wherein this air throttle has a strip body and a connecting part being connected with this strip body, its combined portion of this connecting part and push rod wears fixing mutually, and the length of more combined portion of the length of this connecting part system is short again.

In a preferred embodiment of the present utility model, wherein this gas channel assembly includes the second gas channel and the 3rd gas channel that is positioned at intrinsic the first gas channel of this strip, lays respectively at this connecting part, the perforation that is sequentially 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, the bore of this second gas channel is greater than the bore of the 3rd gas channel.

In a preferred embodiment of the present utility model, wherein between this second gas channel and the 3rd gas channel, be still further provided with a solar term hole, 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 utility model, wherein this combined portion prolongs its cylindric shrinkage pool axially arranging 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 utility model, wherein this hollow rubber cover outer surface is provided with at least one strip oil storage portion and at least one ring-type oil storage portion.

In a preferred embodiment of the present utility model, 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 utility model, wherein this first guiding gutter system prolongs push rod it axially arranges, and this second guiding gutter system prolongs push rod, and it radially arranges.

In a preferred embodiment of the present utility model, wherein this strip body is further provided with at least one holes.

The utility model is by the structural design of air throttle and various conduction pipe, and make the air in outer tube can flow and reach appropriate pressure release effect towards different direction when push rod moves, and air all flows and does not contact with the external world in outer tube, and can avoid air to leak to reach the effect of dustproof and waterproof, and then make the utility model can reach the effect in simplified structure and improving product working life.

Accompanying drawing explanation

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 the utility model fender pile.

Fig. 4 is the partial schematic diagram of the deflector of its mandrel rod of the utility model.

Fig. 5 is the partial schematic diagram of its air throttle of the utility model.

The combination schematic diagram of Fig. 6 the utility model fender pile.

The action schematic diagram that its push rod of Fig. 7 the utility model fender pile 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 utility model is combined with slide rail return device.

Figure 10 is the action schematic diagram of its push rod of the utility model flowing gas state while inwardly advancing.

In accompanying drawing, the mark of each parts is as follows: 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 portion; 43, combined portion; 431, the first guiding gutter; 432, the second guiding gutter; 5, piston mechanism; 51, hollow rubber cover; 511, strip oil storage portion; 512, ring-type oil storage portion; 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 utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.

Refer to shown in Fig. 3 and Fig. 6, the fender pile that the utility model 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 portion 42, this piston joint 41, being driven portion 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 portion 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, portion protrudes from this outer tube 3, and as shown in Figure 6, this is driven, and portion 42 can supply for example, to combine with outside movable objects (slide rail or door body) or power is connected, in order to do making this movable objects can drive push rod 4 to be shifted to bring into play cushioning effect, at this this push rod 4 and this movable objects is to possess and conventionally know that the knowledgeable knows in affiliated technical field in conjunction with the group mode of establishing, 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, shown in Fig. 8, and make between these push rod 4 its piston joints 41 and outer tube 3 inwalls to form water conservancy diversion gap 35, in addition, shown in Fig. 4, this push rod 4 is provided with a combined portion 43 in the inside, one end that is provided with piston joint 41, in the present embodiment, this combined portion 43 can be and prolongs push rod 4 its cylindric shrinkage pools that axially arrange, in this combined portion 43, be provided with one first guiding gutter 431 again, preferably, this first guiding gutter 431 is to prolong push rod 4 it axially arranges, this first guiding gutter 431 is provided with one second guiding gutter 432 with one 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 on 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 for open shape, this hollow rubber overlaps 51 ends to be closed shape and to 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 another this connecting part 54 equals the internal diameter of these hollow rubber cover 51 its open-works 514, shown in Fig. 8, these air throttle 52 its strip bodies 53 are to be worn and be fixed in this hollow rubber cover 51 by 54 one end, connecting part, and this connecting part 54 is to stretch through this open-work 514 and protrude from outside this hollow rubber cover 51, these air throttle 52 its connecting parts 54 wear fixing with push rod 4 its combined portions 43 mutually again, preferably, the length of the more combined portion 43 of length system of this connecting part 54 is short, in addition, shown in Fig. 5, this strip body 53 can further be provided with at least one holes 533, in another this air throttle 52, be provided with a gas channel assembly 55, this gas channel assembly 55 is to connect this strip body 53 and combined portion 54, in the present embodiment, this gas channel assembly 55 includes first gas channel 551 that is positioned at this strip body 53, lay respectively at the second gas channel 552 and the 3rd gas channel 553 in this connecting part 54, this first gas channel 551 wherein, the perforation that is sequentially 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, between this second gas channel 552 and the 3rd gas channel 553, still can further be provided with a solar term hole 554, 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 portion 511 and at least one ring-type oil storage portion 512, this strip oil storage portion 511 all can be groove with ring-type oil storage portion 512, by this, and can being coated with ring-type oil storage portion 512, this strip oil storage portion 511 is equipped with lubricant oil, in order to do thering is lubrication effect to promote the action smooth degree of the utility model.

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, this push rod 4 its to be driven portion 42 be through this push rod movable span 61 and protrude from outside 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 the airtight conditions that makes can keep between this push rod 4 and sealing cover 6 gapless.

Refer to shown in Fig. 6 and Fig. 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 during towards the second end 32 directions displacement near outer tube 3, air in containing space 33 between this push rod 4 and outer tube 3 will be squeezed, now, shown in Fig. 7 and Fig. 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 gap, 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, to guarantee that fender pile can regular event, referring again to Figure 9 shows that the utility model and outside return device are assembled rear schematic diagram as door body return device or slide rail return device 7, 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 cases such as TaiWan, China patent No. M441705 " door body return buffering mechanism " or No. M426336 " the location return devices (two) of slide rail ", therefore, when this slide rail return device 7 drives this push rod 4 outwards to stretch, the utility model can guarantee that these slide rail return device 7 actions are smoothly smooth and easy, again when this slide rail return device 7 drives push rod 4 inwardly to push back, shown in Fig. 9 and Figure 10, now the air in the containing space 33 between this hollow rubber cover 51 and outer tube 3 its first ends 31 will be squeezed, and can comply with and aforementioned contrary 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 outer tube 3, these hollow rubber cover 51 its contacting parts 513 can be because slightly expanding and produce buckling deformation with the active force of the interior wall friction of outer tube 3 and air pressure simultaneously, in addition, by these air throttle 52 its strip bodies 53, be provided with at least one holes 533, therefore air is when by this first gas channel 551, part air also can be exerted pressure to hollow rubber sleeve 51 through this holes 533, and make this hollow rubber overlap 51 inflatable and with the interior wall friction of outer tube 3, therefore can produce larger buffering resistance, in order to do making the utility model provide buffering function to this slide rail return device 7, and then make the utility model can when drawer sliding rail or door body recurrence reset, reach the object of avoiding parts collision or reducing audible noise.

Shown in Fig. 3 and Fig. 6, the utility model is the structural design with various conduction pipes by air throttle 52, and make the air in outer tube 3 can flow 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 interior the flowing of outer tube 3, and can avoid air to leak to reach the effect of dustproof and waterproof, simultaneously, by these air throttle 52 its strip bodies 53, be cylindrical with connecting part 54 again, therefore structure shape is simple, can be easy to processing, and then make the utility model can reach the effect in simplified structure and improving product working life, in addition, by this air throttle 52, be provided with strip body 53 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 utility model can have the effect of improving product reliability concurrently, in addition, refer to shown in Fig. 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 utility model can have the effect of improving product applicability concurrently.

The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. the fender pile that tool preventing dust is let out, is characterized in that: comprise: an outer tube, in this outer tube, be provided with a containing space, 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 portion, this piston joint system is arranged in the containing space of this outer tube slippingly, this portion of being driven protrudes from outside the second end of this outer tube, this push rod is provided with a combined portion in the inside, one end that is provided with piston joint, in this combined portion, be provided with one first guiding gutter, one 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 on its piston joint one side of this push rod, this piston mechanism includes a 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 hollow rubber cover, and its combined portion of this air throttle and push rod wears fixing mutually, is provided with a gas channel assembly in this air throttle;

One sealing cover, sealing lid sets firmly mutually with its second end of outer tube, sealing is covered with a push rod movable span again, its portion of being driven of this push rod is through this push rod movable span and protrudes from outside 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 the airtight conditions that makes to keep between this push rod and sealing cover gapless.

2. the fender pile that tool preventing dust according to claim 1 is let out, 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 to form water conservancy diversion gap between its piston joint of this push rod and outer tube wall.

3. the fender pile that tool preventing dust according to claim 1 is let out, it is characterized in that: wherein this air throttle has a strip body and a connecting part being connected with this strip body, its combined portion of this connecting part and push rod wears fixing mutually, and the length of more combined portion of the length of this connecting part system is short again.

4. the fender pile that tool preventing dust according to claim 3 is let out, it is characterized in that: wherein this gas channel assembly includes the second gas channel and the 3rd gas channel that is positioned at intrinsic the first gas channel of this strip, lays respectively at this connecting part, the perforation that is sequentially 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, the bore of this second gas channel is greater than the bore of the 3rd gas channel.

5. the fender pile that tool preventing dust according to claim 4 is let out, it is characterized in that: wherein between this second gas channel and the 3rd gas channel, be still further provided with a solar term hole, 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 that tool preventing dust according to claim 3 is let out, is characterized in that: wherein this combined portion prolongs its cylindric shrinkage pool axially arranging of push rod, and this strip body is hollow circuit cylinder, and this connecting part is cylindric axostylus axostyle.

7. the fender pile that tool preventing dust according to claim 1 is let out, is characterized in that: wherein this hollow rubber cover outer surface is provided with at least one strip oil storage portion and at least one ring-type oil storage portion.

8. the fender pile that tool preventing dust according to claim 1 is let out, 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 that tool preventing dust according to claim 1 is let out, is characterized in that: wherein this first guiding gutter system prolongs push rod it axially arranges, and this second guiding gutter system prolongs push rod, and it radially arranges.

10. the fender pile that tool preventing dust according to claim 3 is let out, is characterized in that: wherein this strip body is further provided with at least one holes.