CN201866042U

CN201866042U - Rivet and sound arrester using same

Info

Publication number: CN201866042U
Application number: CN2010205805926U
Authority: CN
Inventors: 刘晓之
Original assignee: JINGJIANG AWD FASTENER CO Ltd
Current assignee: JINGJIANG AWD FASTENER CO Ltd
Priority date: 2010-10-28
Filing date: 2010-10-28
Publication date: 2011-06-15
Anticipated expiration: 2020-10-28

Abstract

The utility model provides a rivet which has a rivet shell and a rivet core, wherein the rivet shell is provided a hollow sleeve and a flange connected with one end of the sleeve; the rivet core is provided with a rivet core rod part and a rivet core head part; at least one part of the rivet core rod part is arranged in the sleeve; the rivet core head part is connected with the rivet core rod part, and extends out from the other end of the sleeve, opposite to the flange; and the rivet core head part is in cone shape with a tip. The utility model also provides a sound arrester riveted and fastened by the rivet. The rivet and the sound arrester provided by the utility model are especially applicable to rapid transit railways.

Description

Rivet and the sound arrester that uses rivet

Technical field

The utility model relates to a kind of rivet, in particular for the self-plugging rivet of riveted joint noise barrier, sound-insulating cover and gobo etc.The utility model also relates to a kind of sound arrester that uses this rivet.

Background technique

Self-plugging rivet is widely used in the riveted joint process of structural member, is particularly useful for the riveted joint occasion that conventional rivets is adopted in inconvenience, for example, and the situation that need rivet from the two sides.

Make sound arrester, for example when noise barrier, sound-insulating cover or gobo, need rivet construction in large area; Owing to need use rivet in large quantities, so there are remarkable influence workload and operating time that the operability of rivet is constructed for riveted joint.

Riveted joint with the gobo of present domestic high-speed railway is that example describes below.This gobo has the base plate of panel, porous of porous and the mesosphere of being made by flexible fibrous material between this panel and this base plate usually, plays the effect of sound insulation and noise reduction whereby.The panel of this gobo, mesosphere and base plate need be fastening with rivet.There are the following problems in the riveted joint process: at first, in the actual manufacture process of high-speed railway sound insulation screen board, the positional accuracy in hole does not reach the requirement of aligning, so panel and bottom plate hole inconsistent phenomenon are very general, as shown in Figure 1.Existing rivet head mostly is blunt plane or sphere shape greatly, can not automatic guiding panel hole and bottom plate hole in when riveted joint, and therefore need be by other auxiliary mould equipment.In this case, workman's operation is wasted time and energy, and has reduced manufacturing efficiency, has increased manufacture cost.Secondly, the gobo two sides all is a hard material, and intermediate course is the flexible fiber material with sound absorption function, and head is that the existing blunt nosed rivet of plane or sphere shape is difficult to directly penetrate lamination coating, need carry out punching in advance, boring or boiling hot hole to flexible material; Wherein, when adopting piercing, the lamination coating in mesosphere is difficult to cut off, and the processing metapore can't formalize; Boring processing is used comparatively extensive, can twine drill bit but its shortcoming is lamination coating, causes industrial accident thus easily; Add man-hour adopt scalding the hole, lamination coating decomposes and produce toxic fume had both influenced the healthy of workman, again befouling environment under the situations of a large amount of constructions.

In addition, develop at present application number for example and be 95233758.4 the disclosed snap riveting of the brill certainly nail that has drill bit of Chinese patent literature, do not needed on workpiece, to form in advance perforation when using this rivet workpiece.Yet the difficulty of processing height of this rivet involves great expense, and must use special instrument to drive the rivet rotation when using, and installs more complicated, therefore is not suitable for the situation of extensive use rivet.

The model utility content

For in addressing the above problem at least one of them, the utility model provides a kind of rivet, this rivet have the riveting housing and the nail core, wherein, described riveting housing has the sleeve pipe of hollow, and the flange that links to each other with an end of this sleeve pipe; Described nail core has nail stem and nail core head, and under preassembled situation, at least a portion of this nail stem is positioned at described sleeve pipe, and this nail core head links to each other with described nail stem, and stretches out from the other end opposite with flange of described sleeve pipe; The nail core head of this rivet is to have most advanced and sophisticated taper.

Because the nail core head of rivet is designed to sharp-pointed taper, therefore in the actual production manufacture process, very strong self-conductance positive interaction can be arranged to the mutual dislocation in hole and hole; And this rivet can directly penetrate flexible fibrous material easily when riveted joint, remove process step such as punching, boring or boiling hot hole from.Above reason make to adopt the riveted joint efficiency of construction of the utility model rivet be greatly improved, and both reduced labor intensity and also helped the construction environment that keeps good.

Preferably, conical surface is not have the continuous or discrete projection or the smooth surface of groove, that is to say, and be the continuously smooth transition from boring the transitional surface of point to the awl bottom, therefore this conical surface can not twined by lamination coating because of projection or groove, more helps penetrating flexible fibrous material.According to the utility model, the cone angle of described nail core head should be as far as possible little in OK range, for example is less than or equal to 60 degree, preferably is less than or equal to 45 degree, is more preferably less than or equals 30 and spend.The nail core head can be taper shape, pyramid shape or streamlined taper.Described sleeve pipe can be straight tube, also can form the portion of expanding of one or more weakening grooves or drum type at the intermediate portion of described sleeve pipe.

The utility model also provides a kind of sound arrester, this sound arrester comprise panel, the base plate that for example has a plurality of holes and be arranged in panel and base plate between flexible material layer, and panel, flexible material layer and base plate are by aforementioned rivet, this rivet has riveting housing and nail core, wherein, described riveting housing has the sleeve pipe of hollow, and the flange that links to each other with an end of this sleeve pipe; Described nail core has nail stem and nail core head, and at least a portion of described nail stem is positioned at described sleeve pipe, and described nail core head links to each other with described nail stem, and stretches out from the other end opposite with flange of described sleeve pipe; The nail core head of this rivet is to have most advanced and sophisticated taper.

Description of drawings

Describe preferred embodiment of the present utility model in detail below with reference to the accompanying drawing that only provides as example, in the accompanying drawings:

Fig. 1 is the part of workpiece to be riveted before riveting perforation at employing rivet of the present utility model and the schematic representation of rivet;

Fig. 2 is for adopting the schematic representation of rivet of the present utility model after the riveted joint perforation;

Fig. 3 A-Fig. 3 C is the schematic representation of riveting housing;

Fig. 4 A-Fig. 4 C is the schematic representation of nail core head; And

Fig. 5 is for adopting the schematic representation of rivet of the present utility model after finishing riveted joint.

Embodiment

Fig. 1 and Fig. 2 are for adopting rivet of the present utility model before the riveted joint perforation and schematic representation afterwards.As shown in the figure, this rivet has riveting housing 1 and nail core 2.Riveting housing 1 has the sleeve pipe 11 of hollow, and with the continuous flange 12 in the rear end of this sleeve pipe (that is the rear end along the perforation direction of this sleeve pipe).Nail core 2 has nail stem 22 and nail core head 21, and wherein, at least a portion of nail stem 22 is positioned at sleeve pipe 11, and this nail core head 21 links to each other with described nail stem 22, and stretches out from the front end of sleeve pipe 11.Workpiece to be riveted can be sound insulation screen board fixing-assembly, and its basic structure can comprise panel 3, base plate 4 and mesosphere 5, and this panel and this base plate for example can be porous slabs, and this mesosphere 5 can be a lamination coating.In the utility model, for guaranteeing smooth perforation, the nail core head is designed to have the shape of most advanced and sophisticated similar taper, in addition, do not have discrete or continuous projection or groove from boring point to the surface of awl end transition, thereby reduced the resistance when boring a hole to greatest extent.Need to prove that at this because the seamed edge of pyramid does not produce resistance to the perforation of boring point, so the seamed edge of pyramid is not considered to the projection described in the utility model.

Fig. 1 and Fig. 2 jointly show rivet installation steps of the present utility model.This rivet has most advanced and sophisticated taper because the nail core head is, and therefore there is very strong self-conductance positive interaction in the dislocation hole (for example shown in Figure 1) for workpiece to be riveted.In addition, rivet of the present utility model can directly penetrate the flexible fibrous material that may exist easily when riveted joint, makes the riveted joint efficiency of construction improve thus.During installation, use special tool (for example hand riveter) to make the nail core head of rivet directly pass hole in hole, flexible material layer and the panel 3 in the base plate 4, wherein, behind the hole and flexible material layer in passing base plate 4, this rivet utilizes having of self of most advanced and sophisticated conical in shape characteristic, with the bootstrap mode near and pass hole (as shown in Figure 2) in the panel 3." directly pass " refer to irrotational mode pass and utilize the nail core head realize relative dislocation on base plate and the panel the hole from correcting.Subsequently, rivet nail core makes the riveting housing expand, be out of shape by this special tool pulling, meanwhile breaks and removes part nail core (not shown), thereby realize riveted joint.Therefore, as depicted in figs. 1 and 2,, after perforation, realized the hole correction in the hole that is positioned at the relative dislocation on panel 3 and the base plate 4 before the perforation.

According to the utility model, " having most advanced and sophisticated taper " is meant that described nail core head comprises a shape with the section of outline that roughly is sharp cone distal.This roughly cone angle of the cross section profile of sharp cone distal interior variation that should---for example can realize cone angle scope smoothly---in OK range from correcting, and as far as possible little.Wherein, above-mentioned cone angle can be defined as correspond essentially to taper shaft section (promptly, angle between two buses cross section of the axis of process taper), the perhaps angle between two tangent lines that intersection point (that is the most advanced and sophisticated point of taper) is located respectively and these two buses are tangent of two buses of shaft section.This cone angle for example is less than or equal to 90 degree, preferably is less than or equal to 60 degree, is more preferably less than or equals 45 to spend, even be less than or equal to 30 degree.

As shown in Figure 3A, described sleeve pipe can be straight tube.Described sleeve pipe part therebetween also can form weakening portion, and this weakening portion for example can be one and weaken groove or expand portion that this portion of expanding is drum type, shown in Fig. 3 B.Perhaps, described sleeve pipe part therebetween also forms a plurality of weakening grooves or expands portion, shown in Fig. 3 C.These weakening portions help that sleeve pipe deforms and fixing workpiece of being riveted when staking.

The shape of nail core head 21 can be taper shape, the pyramid shape shown in Fig. 4 B or the streamlined taper shown in Fig. 4 C shown in Fig. 4 A.Wherein, streamlined taper comprises parabola taper and hyperbola taper.Streamlined taper is meant, is not straight line from boring point to the bus of boring the end, but the smooth curve of certain radian is arranged.This curve can be the cambered outwards curve of axis from the nail core shown in Fig. 4 C, also can be to concave and the curve (not shown) of close this axis.

In the utility model, object to be riveted is not limited to gobo.The workpiece of any single or multiple lift all can be the riveted joint object of rivet of the present utility model.Only show the part of gobo among Fig. 1 and Fig. 2.The panel of gobo and the profile of base plate or profile can be straight (as depicted in figs. 1 and 2), also can be corrugated shape or waveform, and can partly offer a large amount of holes so that rivet at the trough of corrugation or wave-like.Outside at the panel 3 of gobo can also be provided with the cover plate (not shown), can be filled with fiber (for example glass fibre) layer between cover plate and the panel 3.During installation, after using special tool to break part nail core, have most advanced and sophisticated cone-shaped nail core head and can stay in this layer of fibers and and cover, be not exposed to outside the cover plate, thereby do not have the potential risk that for example causes scratch by cover plate.

Should be pointed out that top explanation only is exemplary, those skilled in the art can make various modifications and variations to rivet according to the above description, and these modifications and modification are all within protection domain of the present utility model.

Claims

1. rivet, described rivet have riveting housing and nail core, wherein,

Described riveting housing has the sleeve pipe of hollow, and the flange that links to each other with an end of described sleeve pipe;

Described nail core has: the nail stem, and at least a portion of described nail stem is positioned at described sleeve pipe when mounted; With the nail core head, described nail core head links to each other with described nail stem, and stretches out from the other end opposite with flange of described sleeve pipe;

Described rivet is characterised in that: described nail core head is the conical in shape with tip.

2. rivet according to claim 1 is characterized in that described conical surfaces is smooth.

3. rivet according to claim 2 is characterized in that, the cone angle of described nail core head is less than or equal to 60 degree.

4. rivet according to claim 3 is characterized in that, the cone angle of described nail core head is less than or equal to 45 degree.

5. rivet according to claim 4 is characterized in that, the cone angle of described nail core head is less than or equal to 30 degree.

6. according to each described rivet in the claim 1 to 5, it is characterized in that described nail core head is taper shape or pyramid shape or streamlined taper.

7. according to each described rivet in the claim 1 to 5, it is characterized in that described sleeve pipe is a straight tube.

8. according to each described rivet in the claim 1 to 5, it is characterized in that the intermediate portion of described sleeve pipe has at least one portion of expanding that weakens groove or drum type.

9. sound arrester, described sound arrester comprise the panel, the base plate that has the hole that have the hole at least, be arranged in flexible material layer, the cover plate between described panel and the described base plate and be arranged in described panel and described cover plate between layer of fibers, it is characterized in that, described panel, described flexible material layer and described base plate are by according to each described rivet in the claim 1 to 8, and the nail core head of described rivet is stayed in the described layer of fibers and by cover plate after riveted joint and covered.