CN1782236A - Method for producing reflective road marker single main body - Google Patents

Abstract

The invention provides an improved multidimensional single reflective road marker, comprising an wholly casting multidimensional hollow structure subject. Two suitable pre-casting crystal slab accessory. One closing plate with an exterior groove is welded on a depressed part of the bottom plane of the structure subject by sound wave. Respective crystal plate in the cellular unit area wholly comprises cube corner part reflecting backwards. The cellular unit area is limited by a plurality of dividing wall bead and periphery dividing wall. The single structure subject has an inclined multiangle face having a low impacting area, a flat top plane and two inclined front surface and back surface for providing the backward reflectivity. Respective inclined angled surface comprises holding element. The hollow structure subject also comprises a sealed harsh bottom plane with groove which has a hollow hole absorbing the impact force.

Description

The manufacture method of reflective road marker single main body

Technical field

Present invention is about improved road marker, when being used for the separation of traffic track, this road marker is a retro-reflective, particularly, this marker has the hollow structure main body of monomer moulding, and this main structure body has the bottom and the top surface of a sealing, the face of the multi-angle that tilts, each inclined plane has and refers to hold groove, and the front surface that has depression and the rear surface that tilt, is used to connect the crystal parts.

Background technology

Road marker is placed on road surface along center line and sideline, is used for separating motorway.

United States Patent (USP) the 3rd at Heenan, 332, No. 327, the United States Patent (USP) the 3rd of Balint, the United States Patent (USP) the 5th, 002 of 409, No. 344 and Hedgewick, provide the example of normally used retro-reflective road marker in No. 424, the shelly shell that it uses a structuring condensate packing material to fill.The manufacture process of this marker comprises three to four steps: at first, the thermoplastic shell of casting, one or two reflecting surface of on this shell, intactly casting, by adopting vacuum metallization methods on shell, to be coated with the last layer reflective metal layer, fill shell with resin filling materials then, the cube corner that will metallize reflection element encapsulates, thereby makes marker have shock proof main structure body.This marker can normally use in some months, but, because the crosspoint that has projection on the exterior geometry of these markers, and the material synthetic that the shelly marker that this resin is filled uses is incompatible, usually cause reflecting surface to ring and fragmentation, thereby lose retroeflection.People use wear-resistant coating to come this road marker is improved by certain methods.

In the significant improvement that had also once realized other aspect the road marker manufacturing process, it uses metal level to realize by the corner reflection element of not being antagonistic.Intactly quoted United States Patent (USP) the 4th, 726 at this, No. 706 as a reference, and this patent is divided into reflector element with the inner surface of reflecting surface, and each reflector element all has a plurality of cube corner reflection elements, and these unit separate each other by partition wall and bearing wall.Inner surface is not metallized, and before with the resin polymerization filler shell being filled, the total inner surface of reflecting surface is by a very thin polymer layer sealing.Use resin filling materials to make it have the same shortcoming in ' No. 706 patents with ' No. 327 patents.The road marker of technology attempts to reduce the impact of vehicular traffic tire before other employing that has been devised, and keeps preferably the visuality on daytime, and does not re-use resin filling materials.The United States Patent (USP) the 5th of Khieu, 667, invented a road marker of forming by three independent sectors for No. 335, a bottom portion defining that has a structural walls hole of hollow, a fiber reinforced shell has the face of two inclinations, and at least one face has the energy distributor of projection in a sunk area, and at least one reflection crystal slab has cube corner reflection element, three parts are welded to each other together, constitute the reflecting road marker in the patent ' No. 335.

The United States Patent (USP) the 6th of the assignee May invention of ' No. 335 patents, 126, adopted for No. 360 same external shape and three formula elements to constitute the road marker in the patent ' No. 335 in fact, and attempt to change and make the same polymer material of crystal slab and bottom into, thereby the manufacturing cost of reduction road marker by fiber reinforcing material with the shelly shell.

The United States Patent (USP) of Pricone has disclosed a kind of road marker 105 the 6th, 102, No. 612, and it is basic identical with three formula road markers in ' No. 335 patents, has only done trickle change.Marker 105 adheres to reflection crystal slab 192 formations of specifying in the groove by 110, one top portion of a main part 130 and one or two.For the main part 110 that constitutes hollow, top plan is open, has defined the main body of hollow, and it and other third part 130 have been carried out the sound wave sealing-in, thereby intactly constitute a single structure main body.

Manufacturing process before some attempts to utilize a single structure main body to make reflecting road marker.For example, people's such as Spear United States Patent (USP) has been invented an outstanding formula main body that has constant cross section for the 5th, 392, No. 728, and this cross section has outstanding vertical plane, can resist the impact of tire well.

People's such as May United States Patent (USP) has been invented a kind of road marker the 4th, 875, No. 798, and it has the firm main body of one piece, and has the partition wall that constitutes a plurality of hollow bore to support, and these holes are opened on lower surface.The open hole in these bottoms has reduced the factor of adhering to of a lot of bottom surfaces, thereby has reduced the adhesive power of road pavement.

The United States Patent (USP) of Montalbano has been invented a road marker that has the firm main body of one piece the 6th, 109, No. 821, is made by the cell foam thermoplastic of a sealing.Owing to can form bubble when making low density plastics's body, therefore the durability of this material is limited.

United States Patent (USP) the 6th, 267, No. 530 and 6,579, invented the method for using the one piece hollow structure main body of monomer moulding for No. 036, this main structure body intactly comprises a plurality of bearing walls that have wedge-like tip.Though the wedge-shaped top surface of the bearing wall in the front surface of the structural walls in ' No. 036 patent and the sunk area of rear surface is considered to be enough to directly welding reflection crystal slab.But, ' 530 or ' do not have clear understanding need be positioned at the cellular zone of determining of the crystal slab that defines by partition wall to cube corner reflection element in No. 036 patent.The position of these partition walls in the crystal slab accurately meets the position of the sunk surface periphery of the wedge shape energy distributor of carrying partition wall open-top end and main structure body.Using the cube corner reflection crystal slab parts of standard, during the parts that for example use in No. the 3rd, 332,327, the United States Patent (USP) of Heenan, showing more effectively.But, when use with No. the 4th, 875,798, United States Patent (USP) in similar miniature cube corner method for reflection when constituting the reflection crystal slab, the outer peripheral areas that just need not in sunk surface increases wedge-shaped top.Find in addition, have the inclination of intersection region of the projection of the top periphery that is lower than above-mentioned road marker by use, the face of multi-angle, the suffered tire of reflecting surface that can reduce present road marker impacts.At present the road marker that has face inclination, multi-angle of invention is realized visuality on better daytime by bigger non-reflective surface area being exposed to vehicular traffic.Second method that the front surface of the inclination of minimizing road marker and the tire on the crystal slab in the rear surface impact is to use and opens at the interior a plurality of circles of bottom section or the depression of rectangle.When the tire of motor vehicle impact tilt have the side of angle the time, rectangular depression can absorb impact force, thereby crystal slab is subjected to directly impacting and minimum is reduced in the infringement that causes.Target of the present invention is to make high reflectance, durable road marker cheaply, and utilizes the one piece construction main body of the monomer moulding that has low shock zone and the inner depression that forms to absorb impact force.

Summary of the invention

It is a principal object of the present invention to make a kind of retro-reflective road marker; utilize an improved single structure main body; be exposed to car by bigger zone daytime visuality, longer reflection life-span are provided non-reflecting surface; lower shock zone, and the crystal slab method of attachment with better retroeflection face of being with protectiveness projection snubber is provided.

The multiaspect single structure main body of the monomer moulding of the face of these characteristics part by the multi-angle that has inclination is provided realizes, can reduce the shock zone of vehicle tyre like this, realize driving more stably, and in the lower surface of main structure body, comprised a plurality of rectangular depression that have the absorption impact force of open end.

Another target of the present invention is to make a kind of reflecting road marker that has the single structure main body of a monolithic multiaspect, it has the reflecting surface of two inclinations, each face all has a sunk area, the open end that comprises a peripheral wall and bearing wall, the energy distributor that wedge shape is arranged on the bearing wall top is used for making reflection crystal slab parts to be connected more firm with the sunk surface of the single structure main body of above-mentioned multiaspect.

The preferred construction of the reflection crystal slab of present road marker can be divided into rectangle or foursquare unit with a surface according to the reflective front surface of the inclination of single structure main body and the size and the shape of the hollow bore in the rear surface.

Each cellular zone in the reflection crystal slab parts all comprises complete a plurality of cube corner reflection parts.First-selected reflection crystal slab parts have an external surface that has the snubber of projection, and are corresponding with the inner peripheral of reflector element, thereby avoid contacting with doughnut.

The single structure main body of multiaspect of the present invention has had significant improvement, and can reduce cost in the process of making thermoplastic structure's main body.The method of the manufacturing similar structures main body before any all needs an extra part that bottom or top surface are sealed usually.

Another target of the present invention is that the external surface for reflective crystal slab parts provides a wear-resistant coating compound, propylene polymerization body coating compound for example, or use the chemical vacuum deposition process that this harder external skin is provided.

Description of drawings

Fig. 1 is the isometric view that has the reflecting road marker of the face of multi-angle and the first-selection that finger is held a groove and a crystal slab that inserts in advance;

Fig. 2 is the vertical view of the reflection crystal slab that has two row's reflector elements of road marker shown in Figure 1;

Fig. 2 b is the amplification profile of crystal slab 2b-2b reflector element along the line shown in Figure 2, has showed peripheral pearl and dividing wall around each reflector element of Fig. 2;

Fig. 2 c is that another of road marker shown in Figure 1 has the vertical view of the reflection crystal slab of row's reflector element;

Fig. 3 is the vertical view of the lower surface of road marker shown in Figure 1.The hole and the structural walls of opening of having showed the single main body of road marker shown in Figure 1;

Fig. 4 is the vertical view of single structure main body shown in Figure 1, has showed a reflection crystal slab and a blank plate annex;

Fig. 5 is a road marker 5-5 sectional drawing along the line shown in Figure 4, has showed the crystal slab, blank plate, structural walls and the inner hole that insert in advance;

Fig. 6 is the vertical view of bottom shrouding of the single structure main body of reflecting road marker shown in Figure 1.

The specific embodiment

The reflecting road marker of the projection of assembling comprises two relatively thin crystal slabs according to the present invention, form with the thermoplastic casting, for example Merlon or ABS resin, at least one crystal slab is transparent thin crystal slab, one surface intactly is separated into the alveolate cells that has a plurality of cube corner retroeflection parts, according to the present invention, it inserts in the mould before casting multiaspect single structure body in advance.Multiaspect single main body 72 of the present invention is formed by thermoplastic resin casting, it with make that to reflect the employed resin of crystal slab identical, unique different be the dyeing of having passed through opaque pigment.

That this kind polycarbonate resin preferably is selected from is resilient, highly impact-resistant and resin group with UV stability.

Here measure word " " expression " one or more " in " one group of parts ".The traditional reflecting road marker that has the en-block construction main body is at United States Patent (USP) the 6th, 267, and 530,6,579,036,6,334,734 and 6,821, describe to some extent in No. 051 patent, quoted these patents as a reference at this.It is ' 734 that people's view was once arranged, and the reflecting road marker in ' No. 036 and ' No. 051 patent is made a single structure main body, it or have the reflecting surface of complete moulding, perhaps have the reflection crystal slab of sound wave welding.

' 734, ' 036 and ' 051 does not think clearly that the reflection crystal slab can be inserted in the mould in advance before the whole single structure body of casting.

Reflecting road marker 10 among Fig. 1-6 is by the firm main structure body 72 of a monomer moulding, the crystal slab parts 66 of an insertion in advance and 68 constitute, and at least one crystal slab 66 intactly comprises retroeflection cube corner parts (among the figure there not being according to actual size drawn reflection part).The single structure main body 72 of the monomer moulding of Fig. 1 has the front surface of an inclination, it has reflection crystal slab parts 66 that insert in advance, a rear surface has a blank plate 68, a smooth top surface 74, the face 73 of the multi-angle of a lower surface 70 and two inclinations, each mask have a finger to hold groove 67.Blank plate 68 preferably intactly with together moulding of main structure body 72.Crystal slab 66 comprises an inner surface, and it has a plurality of alveolate cells 63, and each unit has cube corner reflection rib shape parts.Each reflector element 63 intactly has peripheral dividing wall 42, shown in Fig. 2 b, is used for isolating each reflector element in casting has the process of single structure main body 72 of said reflection plate 66.

The partition wall 41 that each reflection crystal slab parts 66 has peripheral pearl 44 (Fig. 2 and 2c) and projection, it is encapsulated in casting cycle in the single structure body 72.Crystal slab 66 comprises an external surface, and it has the cellular snubber 41b of projection, about 0.01 to 0.015 inch high, is used for preventing that vehicle tyre from taking place directly to contact with the reflecting surface of crystal slab 66.

Single main body 72 is made of the sunk area 78 that 70, one of a lower surface that have an open end of a plurality of hollow bore 76 has the hole 75 that the mitigation of a plurality of wedge shape energy distributors and a plurality of depressions impacts.

Sunk area 78 can be with a thermoplastic plate that is complementary 80 (being shown as a transparent plate) in Fig. 6, its outside comprises a plurality of grooves, be used for being increased in the tack of road surface, there is the energy distributor 82 of wedge shape on the surface within it, it by the sound wave welding on the bottom notch zone 78 of single main body 72.It is found that, have the face 73 inclination, multi-angle of the intersection region of projection by use, the reflecting surface 66 suffered tires of present road marker impact and can be alleviated greatly.Implementation method be the vertical surfaces of revolution 73 than lower part, make it and lower surface 70 constitutes the angle of about 65 to 75 degree, then residual altitude is rotated about 50 to 55 degree.

Also being horizontally rotated than lower part of the front and rear of face 73 makes lower surface 70 constitute the shape (as shown in Figure 3 and Figure 4) of multiaspects, thus by the bigger zone with the non-reflecting surface of face 73 be exposed to vehicular traffic provide better daytime visuality.

Each face 73 intactly has a finger and holds parts 67, is used for making the operation and installation process easier.Lower surface 70 has a plurality of re-entrant parts 75, and the degree of depth is about 0.01 to 0.50 inch, is used for increasing adhering to factor, and alleviates the suffered tires impact of the front surface of inclination and the crystal slab parts that insert in advance in the rear surface 66.Depression parts 75 are preferably circle or rectangle, and open in bottom surface area 70.The depression parts 75 of hollow impact at vehicle tyre angled 73 o'clock are as shock snubber, thereby crystal slab 66 are subjected to that tire directly impacts and the damage that causes is reduced to minimum.

The general thickness that the first-selection of the reflection crystal slab parts 66 of road marker 10 constitutes can be about 0.06 to 0.125, to insert the zone corresponding with crystal in the inclined plane of hole face of casting instrument, and has an inner surface, be separated into rectangle or foursquare alveolate cells 63, corresponding with the size and the shape of core element of the projection of casting instrument, define hollow bore 76.Each reflector element 63 is retained in the air gap in the hollow bore 76.

Peripheral dividing wall 42 provides seal member, and it also is pressed on the peripheral dividing wall 42 by the core element with mould in the process of casting single structure main body 72 cube corner rib shape parts 43 are fixed in each alveolate cells 63.Reflection crystal slab parts 66 or 40c intactly have a plurality of cube corner reflection parts (not selected size or type) herein, are defined by partition wall 41.

First-selected reflection crystal slab parts 66 or 40c have an external surface, and it has the snubber 41b of projection, and about 0.01 to 0.02 inch high, it has defined internal reflection unit 63 as the extension of partition wall 41.

Usually, reflection crystal slab parts 66 or 40c casts, especially when the standard reflection cube corner element that uses in ' No. 327 patents of employing.

When hope uses overall crystal slab thickness to be about 0.07 to 0.09 inch thinner crystal slab parts 66 or 40c, can be according to the United States Patent (USP) the 3rd of Stamm, 712, method described in No. 706 is made one 10 * 10 inches mould, and only use two square crossing grooves to make a diel, thereby a large amount of reflection crystal slab 66 or 40c of making.

Use one transparent, the precast plate with Merlon of UV stability is suppressed three-dimensional micro reflection cube corner parts, then 10 * 10 inches plate is cut to suitable size, to make a plurality of reflection crystal slabs 66 or 40c.

Some wear-resisting resinous coat compounds are easy to obtain, and are adapted at using in the present invention, and these are at the United States Patent (USP) the 4th of DOW CORNING (Dow Coming) company, 355,135,5,126,394 and 5,648, No. 173, people's such as Chung 4,486,4 of No. 504 patents and Lysander, discuss to some extent in 702, No. 773 patents, quoted these patents here as a reference.Also can select some chemical vacuum deposition process in addition for use.But these methods need higher relatively initial capital investment, come purchase of equipment and instrument.Usually, the first-selected size of main structure body is 4.0 inches wide, and 3.0 4.0 inches dark.

Be appreciated that specific embodiment of the present invention is used for describing better the present invention, but not limitation of the present invention.

Principal character of the present invention can be applied to different embodiment under situation about not departing from the scope of the present invention with aim.The invention is not restricted to the particular device that this place is showed and described.Available different equipment is made the reflecting road marker body of required monomer moulding, and the reflection crystal slab parts among the present invention.

Can be in appended claim scope the method for the reflective marker of manufacturing monolithic of above-mentioned first-selection be made and change or revise.The present invention can implement according to the specifically described distinct methods in place therewith.

Claims (1)

1, method of making the multiaspect reflecting road marker, this marker has the single structure main body of a casting, said structure main body and periphery, a plurality of alveolate cells zone match, this a plurality of alveolate cells zone is positioned at least one retroeflection crystal slab insertion parts, above-mentioned single structure main body has the face of two multi-angles, each has been worn a finger and has held groove, above-mentioned single structure main body has a lower surface, it has a sunk area, comprise the open end of a plurality of hollow bore, said method may further comprise the steps:

A) provide the reflection crystal slab parts of a casting, be used for providing retroeflection for motor vehicle, above-mentioned crystal slab parts have flat outer surface, it has the protection snubber of a plurality of projections, about 0.01 to 0.02 inch high, the inner surface of above-mentioned crystal slab parts has a plurality of alveolate cells, define by partition wall and isolation peripheral wall, above-mentioned reflection crystal slab parts can have a row or two row's reflector elements, each unit intactly has a plurality of cube corner retroeflection parts, is defined by the peripheral wall of isolating peripheral wall parts and projection;

B) main structure body for monomer casting provides the casting instrument, the periphery in this main body and a plurality of alveolate cells zone matches, this a plurality of alveolate cells zone is positioned at the reflection crystal slab parts of above-mentioned moulding in advance, and above-mentioned instrument can be isolated and seals the reflector element in the above-mentioned crystal slab insertion parts; Provide one to support and sealing plate, its external surface has a plurality of depressions, and inner surface has the energy distributor of a plurality of projections, is used for the lower surface of above-mentioned single structure main body is carried out sonic seal, and improves adhesion-tight;

C) external surface for the reflection crystal slab provides wear-resistant animi resin coating compound, is used for improving abrasion resistance and durability.

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