KR20170021679A

KR20170021679A - Braille block

Info

Publication number: KR20170021679A
Application number: KR1020150116335A
Authority: KR
Inventors: 박동국
Original assignee: 주식회사 세림산업
Priority date: 2015-08-18
Filing date: 2015-08-18
Publication date: 2017-02-28
Also published as: KR101819958B1

Abstract

The present invention relates to an improved braille block which is provided with a non-slip function by using a curable reactive MMA resin, silica sand, pigment, etc., by varying the composition of an induction part to prevent safety accidents and improve visibility.
The braille block according to the present invention is a braille block in which a linear or braille-shaped guide portion is formed so as to protrude above the base portion. The guide portion includes 20 to 40% of reactive MMA resin, 5 to 10% of a filler, To 10% of a pigment, 2 to 5% of a colored pigment, 50 to 70% of a dolomite, 0.5 to 1.0% of a thixotropic agent, and 0.5 to 3.0% of a hardener.

Description

Braille block {BRAILLE BLOCK}

The present invention relates to a braille block, and more particularly, to an anti-slip function by using a curable reactive MMA resin, silica sand, pigment, etc., by varying the composition of a guide part protruded above the base part to prevent safety accidents, To an improved Braille block.

Generally, the braille block is configured to guide walking of the blind and the like, and a protrusion having a braille structure is provided on the upper part of the block structure.

Such a braille block is usually constituted by connecting a cover having a protruding portion (guiding portion) formed on the upper part of the base part structure, or fixing each protruding part (guiding part) to the upper part of the base part.

However, since the braille block of the prior art is formed of a rigid protrusion, the buffering force is reduced, and there is a limitation in providing a comfortable and safe walking path for the visually impaired as well as the general pedestrian.

In other words, there is a problem that the risk of a safety accident increases when a visually impaired person or a general pedestrian falls down while walking, as well as not providing a comfortable walking environment to a visually impaired person due to a hard protrusion. In addition, there is also a problem that not only a considerable amount of fatigue occurs while walking the visually impaired, but also noise increases when the cane touches.

On the other hand, in some cases, the protrusion provided on the block structure is made of a soft material such as rubber material. However, in the case of such a braille block, the protrusion is easily damaged and the durability is greatly reduced. It is very complicated and the manufacturing process thereof is not easy and the economical efficiency is low.

Prior art related to existing Braille blocks is disclosed in Korean Patent Registration No. 10-1139857 entitled " Braille Block for the Blind and Method of Manufacturing the Same "(Registered on Apr. 18, 2012) A block body to which the block cover is coupled and a block core to be inserted into the block body, wherein the block cover is formed with a plurality of penetrating holes for penetrating the ground surface of the rainwater, A plurality of coupling ribs are formed to be fusion-bonded with the first and second coupling ribs; The upper main body is formed with a water permeable tube binding portion such that the water permeable tube of the block cover is fusion-bonded to the coupling hole of the block core. The end portion of the permeable tube binding portion is formed with a step portion for inducing tight binding during the cooling and shrinking process. The upper surface of the frame is formed with a fitting groove into which the fitting projection of the block cover is fitted.

Other prior art related to existing braille blocks include a block having a plurality of fixing grooves on its upper surface, as disclosed in Korean Patent No. 10-1260584 entitled " Braille Block and Method for Manufacturing the Same "(Registered on March 31, 2013) ; A plurality of protrusions protruding upward from the block in a state of being inserted into the fixing grooves of the block; A plurality of through holes are formed on the upper portion of the block to expose upper portions of the protrusions and a fixing portion inserted into the fixing grooves of the block around the through holes and fixing the protrusions Wherein an outer frame fixing groove is formed on a peripheral surface of the block, an edge of the cover extends to a peripheral surface of the block so that the cover can be inserted into and fixed to the outer frame fixing groove, .

Conventionally, a buried block of a braille block for a visually impaired person has difficulty in construction and construction of an architectural structure is impossible.

As a result, the braille block of the attachment type is applied, but in this case also, the use of the materials such as metal, PVC, elastic rubber, etc. has a disadvantage that the sliding resistance function is deteriorated.

This causes frequent falls of blind people and pedestrians. In particular, there is a possibility that a fall accident will occur more frequently in a rainy day. Therefore, it is necessary to improve the anti-slip function of the braille block constituted by the base portion guiding portion.

Even visually impaired people may have visibility to colors, so it is necessary to improve visibility of brighter yellow.

Korean Registered Patent No. 10-1139857 entitled " Braille Blocks for the Blind and Methods for Manufacturing the Braille Blocks "(registered on April 18, 2012) Korean Patent No. 10-1260584 entitled "Braille Block and Method for Manufacturing the Same" (Registered Date: Apr. 26, 2013)

Disclosure of the Invention The present invention has been made in view of the above-described problems, and its object is to provide a non-slip function by using curing type reactive MMA resin, silica sand and pigment, In addition, it is an object of the present invention to provide an improved Braille block for improving visibility.

In order to accomplish the above object, the present invention provides a braille block having an induction portion protruded on the upper side of a base portion, wherein the guide portion comprises 20 to 40% of reactive MMA resin, 5 to 10% of a filler, 2 to 10% , 2 to 5% of a colored pigment, 50 to 70% of a dolomite, 0.5 to 1.0% of a thixotropic agent, and 0.5 to 3.0% of a hardening agent.

Wherein the reactive MMA resin comprises 10 to 40% by weight of methyl methacrylate, 10 to 30% by weight of ethylhexyl acrylate, 10 to 15% by weight of hydroxypropylmethacrylate, N, N-bis (2-hydroxypropyl) 1.0 to 5.0% by weight of P-toluidine, and 10 to 30% by weight of N-butyl acrylate.

The curing agent is composed of 30 to 50% by weight of benzoyl peroxide and 50 to 70% by weight of dioctyl phthalate based on 100% by weight of the curing agent.

The dolomite has a size of 100 to 850 mu m for anti-slip properties.

The present invention has the beneficial effect of securing the visibility of the visually impaired person and improving the anti-slip function by preventing the induction part composition formed with the above-described structure on the upper side of the base part, thereby preventing safety accidents such as falls.

1 is a block diagram showing a braille block according to the present invention;

The braille block according to the present invention is a braille block 10 in which a guide portion 14 protruding in a linear or braille shape is formed on the upper side of a base portion 12 as shown in FIG. (%) Of the reactive MMA resin (110), 5 to 10% of the filler (120), 2 to 10% of the phosphorescent pigment (130), 2 to 5% of the colored pigment (140) 0.5 to 1.0% of the thixotropic agent 160, and 0.5 to 3.0% of the hardener part 170. [

The braille block 10 is required to color the guide portion 14 in yellow in order to ensure visibility to the visually impaired. For this purpose, the colored pigment 140 and the phosphorescent pigment 130 are used.

The reactive MMA resin 110 is a fast curing reactive resin containing 10 to 40% by weight of methyl methacrylate, 10 to 30% by weight of 2-ethylhexyl acrylate, 10 to 15% by weight of (hydroxypropyl methacrylate), 1.0 to 5.0% by weight of N, N-bis (2-hydroxypropyl) -P-toluidine and 10 to 30% by weight of N-butyl acrylate.

Methyl methacrylate provides a function of improving weather resistance, strength, and adhesion performance, and when it is less than 10% by weight, it is difficult to obtain the effect of the function described above. When it exceeds 40% by weight, the strength of the coating film is improved, The flexibility is deteriorated and the cold resistance is lowered.

Ethylhexyl acrylate and N-butyl acrylate provide the ability to impart cured coating flexibility and offer extensibility and flexibility in winter or day-to-day climates to provide resistance to cracking and impact. If it is less than 10% by weight, cracking may occur due to lack of flexibility. If it is more than 30% by weight, peeling of the coating film and detachment of aggregate may occur due to insufficient strength of the coating film and insufficient adhesion .

N, N-bis (2-hydroxypropyl) -P-toluidine functions to accelerate the reaction. When the amount is less than 1% by weight, the curing time is delayed and workability deteriorates. Is shortened, but causes a yellowing phenomenon and a decrease in the hardness of the coating film.

The filling agent 120 is contained in the coating material to ensure the strength of the coating material and provides a workability improving function. As the type of the filler material 120, calcium carbonate and silica sand can be used. When the filler material 120 is 5 wt% , Formation of a uniform coating film is difficult and the function of the thixotropic agent 160 may be deteriorated. When the amount exceeds 10% by weight, the gloss loss and stain resistance may decrease due to the oil absorption amount of the filler 120, which may cause contamination .

When the phosphorescent pigment 130 is used in an amount of less than 2% by weight, it is difficult to ensure visibility due to insufficient luminous efficiency. When the content is more than 10% by weight, But the cost is increased and the economical efficiency is lowered.

It is difficult to expect a coloring effect when the colored pigment 140 is used in an amount of less than 2% by weight, and the cost is increased when it exceeds 5% by weight because the colored pigment 140 employs a yellow pigment favorable for visually- .

The dolomite 150 is an anti-slip aggregate, and the size of the dolomite 150 is preferably 100 to 850 mu m.

When the dolomite 150 is less than 100 탆, the sliding resistance is decreased. When the size is more than 850 탆, the sliding resistance is increased, but the risk of a safety accident in case of a fall is increased.

When the dolomite 150 is used in an amount of less than 50% by weight, the sliding resistance function deteriorates. When the dolomite 150 is used in an amount exceeding 70% by weight, the workability of the dolomite decreases.

When the content of the thixotropic agent 160 is less than 0.5% by weight, the storability of the coating material is deteriorated, and when the aggregate is formed and the aggregate material 150 is formed during the application of the coating material, The sliding resistance function is lowered, and when it exceeds 1.0 wt%, the workability is lowered.

The curing agent 170 may be composed of 30 to 50% by weight of benzoyl peroxide and 50 to 70% by weight of dioctyl phthalate based on 100% by weight of the curing agent.

When the content of the curing agent 170 is less than 0.5% by weight, it may cause a problem of curing failure. If the curing agent is used in an amount exceeding 3.0% by weight, the yellowing of the cured coating film and the hardness are lowered, There is a risk of degradation.

The content of the curing agent 170 and the curing agent according to the temperature can be determined according to the temperature and the working environment.

Temperature (℃) Curing agent usage (wt%) House time (minutes) Curing time (minutes) 10 3.0 14 45 10 2.0 18 50 20 2.0 10 30 20 1.0 15 35 30 1.0 8 20 30 0.5 12 30 40 0.5 6 18

Accordingly, the present invention is characterized in that, by fixing the composition of the guide part (14) constituted as described above on the upper side of the base part (12), the visibility of the visually impaired person is secured and the anti-slip function is improved, .

10: braille block 12: base block
14: Inducer 110: Reactive MMA resin
120: filler 130: phosphorescent pigment
140: colored pigment 150: dolomite
160: stain agent 170: hardener part

Claims

In the braille block (10) in which the guide portion (14) is formed so as to protrude above the base portion (12)
The induction unit 14 may contain 20 to 40% of the reactive MMA resin 110, 5 to 10% of the filler 120, 2 to 10% of the phosphorescent pigment 130, 2 to 5% of the colored pigment 140, Wherein the brazing block comprises 50 to 70% of dolomite (150), 0.5 to 1.0% of thixotropic agent (160), and 0.5 to 3.0% of hardener (170).

The method according to claim 1,
Wherein the reactive MMA resin (110) comprises 10 to 40% by weight of methyl methacrylate, 10 to 30% by weight of ethylhexyl acrylate, 10 to 15% by weight of hydroxypropylmethacrylate, N, N-bis Propyl) -P-toluidine in an amount of 1.0 to 5.0% by weight, and N-butyl acrylate in an amount of 10 to 30% by weight.

The method according to claim 1,
Wherein the curing agent part (170) comprises 30 to 50% by weight of benzoyl peroxide and 50 to 70% by weight of dioctyl phthalate based on 100% by weight of the curing agent part (170).

The method according to claim 1,
Wherein the dolomite (150) has a size of 100 to 850 mu m for anti-slip properties.