JP2002115218A - Wiping-out dustproofing device for road sign and its manufacturing mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damage of a wiping-out member, and to form a wiping- out dustproofing device at a low cost. SOLUTION: The wiping-out dustproofing device 10 for the road sign with a plurality of the flexible wiping-out members 11 formed in a rectangular shape and a base section 13, in which each wiping-out member 11 is formed integrally, forming space sections 12 among each wiping-out member 11, is formed. The wiping-out members 11 are formed in the approximately rectangular shape while roundness is formed at the free ends 11a of the wiping-out members 11, and roundness having the same shape as the roundness of the wiping-out members 11 is formed at the corner sections 12a of the space sections 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiping and dust proofing device for a road sign disposed on a center line, a lane change line or a separation zone of a road, and a production type thereof.

[0002]

2. Description of the Related Art Conventionally, as this kind of wiping dust proof device,
For example, JP-A-6-299522 and JP-A-7-13
There is one disclosed in Japanese Patent No. 892.

[0003] First, a road sign pillar disclosed in Japanese Patent Application Laid-Open No. 6-299522 is provided with a wiping device for covering a sign portion and wiping dirt attached to the sign portion. The wiping member has a large number of wiping members which are arranged along the outer periphery of the pillar body in a noren-like manner and which can swing irregularly in contact with the outer peripheral surface (marking portion). With this configuration, that is, by oscillating the wiping member irregularly by wind power, dirt such as automobile exhaust gas and dust attached to the sign portion is wiped.

The wiping device disclosed in Japanese Patent Application Laid-Open No. 7-13892 is provided with a wiping member having a non-circular cross section. By forming the wiping member in this way, the wiping member is easily affected by wind pressure. This improves the wiping ability.

[0005]

However, one of the wiping devices disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 6-299522 is one in which a plurality of cuts are provided in one sheet-like member to form a wiping member. For this reason, there is an inconvenience that the sign portion is hidden and invisible when wind power does not hit the wiping member. Further, in another wiping device disclosed in this publication, the interval between the wiping members is formed in a rectangular shape so that the sign can be seen even without wind force, but stress concentrates on the corner of the interval. The wiping member has a disadvantage that the wiping member is damaged from the base due to, for example, a collision of an automobile due to the easy shape. And the manufacture of such a wiping device,
For example, when one sheet-shaped member is punched out by a punching die, the punched interval is discarded as waste, which has a disadvantage that the yield is poor. In addition, when the wiping device is manufactured using a molding die, the cost of the die increases, and there is a disadvantage that the wiping device cannot be manufactured at low cost.

Next, in the wiping device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-13892, a molding die must be used to form a non-circular cross section. There is a disadvantage that the wiping device cannot be manufactured.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to improve the disadvantages of the prior art, in particular, to effectively prevent damage to the wiping member and to manufacture the wiping dust-proof device for road signs at low cost. It is an object to provide the production mold.

[0008]

In order to achieve the above object,
In a road sign wiping and dust proofing device having a plurality of flexible wiping members formed in a cord shape, and a trunk portion in which each of these wiping members is integrally formed by providing an interval between the wiping members. The wiping member is formed in a substantially rectangular shape, and the free end of the wiping member is rounded. And the roundness of the same shape as the roundness of a wiping member is provided in the corner part of a space part. By providing roundness at the corners of the gap in this manner, stress concentration at the corners can be suppressed. Further, by forming the wiping member into a substantially rectangular shape and providing the free end of the wiping member and a rounded portion having the same shape at the corners of the interval portion, the wiping member of one wiping dustproof device can be replaced with the other. Can be superimposed on the interval portion of the wiping dustproof device. That is, two wiping dustproof devices can be formed in one punching process.

Here, a manufacturing type of such a wiping and dust proofing device is a first type including at least one cutting means provided corresponding to the shape of the wiping and dust proofing device and a holding body for holding the cutting means. And a plate-shaped second mold disposed opposite to the first mold. The cutting means has a corrugated blade composed of a connected body of a plurality of straight blades arranged at predetermined intervals. Since the cutting means has the corrugated blade in this manner, the conventionally discarded space portion can be formed as a wiping member of another wiping dust proof device, and at least two wiping dust proof devices are formed by a single punching. It becomes possible. In addition, the corners of the gaps can be rounded.

Here, the above-mentioned production die will be described in detail. The cutting means is arranged with the above-mentioned corrugated blade provided with an odd number of linear blades and with a predetermined distance from the linear blade at one end of the corrugated blade. A first straight blade to be provided, a second straight blade disposed at a predetermined distance from the other straight blade at the other end of the wavy blade, and a second straight blade from one end of the wavy blade on the first straight blade side. A first main body forming blade surrounding one vertex group of the corrugated blade up to one end, and the other of the corrugated blade between the other end of the corrugated blade on the second linear blade side and one end of the first linear blade And a second trunk forming blade surrounding the vertex group. And
The other end of the first straight blade comes into contact with the first trunk-forming blade, and the other end of the second straight blade comes into contact with the second trunk-forming blade.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention.
A description will be given based on FIG.

Reference numeral 1 shown in FIG. 1 indicates a production type of the wiping and dust proofing device according to the present invention. This manufacturing die 1 includes a first die 4 having a blade (cutting means) 2 provided corresponding to the shape of the two wiping and dustproof devices 10 shown in FIG. 3 and a holding body 3 holding the blade 2. And a flexible plate-shaped second die 5 disposed opposite to the first die 4,
As described later, the sheet-shaped member 10A shown in FIG. 3 is disposed between the first die 4 and the second die 5, and punching is performed, that is, the sheet-shaped member 10A is cut along the arrangement shape of the blade 2. Thus, the wiping dustproof device 10 is formed.

The first mold 4 will be described. First, as shown in FIG. 2, the blade 2 of the first mold 4 has a waveform blade 2a having the same wavelength and the same amplitude, which is composed of a connected body of an odd number of straight blades arranged at a predetermined interval. A first linear blade 2b disposed at a predetermined distance from the linear blade at one end of the corrugated blade 2a; and a first linear blade 2b disposed at a predetermined distance from the other linear blade at the other end of the corrugated blade 2a. The first straight blade 2c, and a substantially rectangular first main body surrounding one vertex group of the corrugated blade 2a between one end of the corrugated blade 2a on the first linear blade 2b side and one end of the second rectilinear blade 2c. The second blade forming blade 2e having a substantially rectangular shape and surrounding the other vertex group of the corrugated blade 2a between the forming blade 2d and the other end of the corrugated blade 2a on the second linear blade 2d side to one end of the first linear blade 2b. It is composed of And as shown in FIG.
The other end of the first straight blade 2b is in contact with the first trunk forming blade 2d, and the other end of the second straight blade 2c is in contact with the second trunk forming blade 2e. Here, the connection between the both ends of the corrugated blade 2a and each of the base portion forming blades 2d and 2e is provided with a roundness equivalent to the roundness of the vertex of the corrugated blade 2a.

By configuring the blade 2 in this manner,
As shown in FIG. 3, two wiping dust-proof devices 10 can be formed by one punching. Specifically, the corrugated blade 2a
In addition, the first and second straight blades 2b and 2c cause the respective wiping members 11 of the one wiping / dustproof device 10 and the respective intervals 12 of the other wiping / dustproof device 10 to overlap with each other. The wiping member 11 and the interval portion 12 can be formed from one sheet-shaped member 10A described later. Further, the base portion 13 of one wiping and dustproof device 10 can be formed by the first base portion forming blade 2d, and the base portion 13 of the other wiping and dustproof device 10 can be formed by the second base portion forming blade 2e. In this manner, two wiping dust-proof devices 10 can be formed by a single punching, so that it is possible to improve production efficiency. Furthermore, since the conventionally discarded interval portion 12 can be formed as the wiping member 11 of the other wiping and dustproof device 10, the yield can be improved, and the amount of waste discharged can be reduced. That is, the manufacturing cost can be reduced, and resource saving can be achieved.

Further, since the corrugated blades 2a are used, the corners 12 of the gaps 12 of the wiping dust-proof devices 10 are formed by the apexes.
a can be rounded, so that stress concentration at the corner 12a can be suppressed. Thus, it is possible to effectively prevent the wiping member 11 from being damaged due to stress concentration. In this case, as will be described later, the straight blades of the corrugated blade 2a and the first and second straight blades 2b and 2c are respectively disposed at substantially the same intervals and substantially in parallel, and the connecting portions of the straight blades are rounded. By making the diameter a semicircle corresponding to the interval, the stress concentration can be more effectively suppressed.

Here, the blade 2 of the first mold 4 is a corrugated blade 2a.
And the first and second straight blades 2b and 2c and the first and second main body forming blades 2d and 2e are formed by a single substantially rectangular blade. It is bent and buried in a groove 3a of the holding body 3 described later. In this case, the other ends of the first and second straight blades 2b and 2c are used as ends of the blade 2. By forming the blade 2 as described above, the workability at the time of replacing the blade 2 as described later can be improved, and the management of the mold becomes easier as the number of parts decreases. Further, since the end portion of the blade 2 is provided at two places, it is possible to reduce the fiber residue such as the fluffing of the fiber in the sheet-like member 10A described later in the cut surface of the wiping dustproof device 10 after the punching and forming. it can. Further, since the finishing operation of the fiber residue (the operation of removing the fiber residue) is not required, the wiping and dustproof device 10 can be formed at low cost. The position of the end of the blade 2 is not necessarily limited to that of the present embodiment, and its shape is not necessarily limited to that of the present embodiment.

In the present embodiment, the straight blades of the corrugated blade 2a and the first and second linear blades 2b and 2c are substantially at the same interval (ie, a distance of half the wavelength of the corrugated blade 2a). And since it is arrange | positioned substantially parallel, the wiping member 11 can be formed in a substantially rectangular shape. Thus, for example, when the wiping members 11 swing, the wiping members 11 do not become entangled with each other. In addition, since the wiping member 11 and the space portion 12 have substantially the same shape, the two wiping dustproof devices 1 having substantially the same shape are provided.
0 can be formed.

Subsequently, the holder 3 of the first mold 4 is formed of, for example, a substantially rectangular resin plate. A groove 3a shown in FIG. 2 is provided on one surface of the holder 3 in a shape corresponding to the disposition shape of the blade 2 described above, and the blade 2 is buried in the groove 3a by protruding a blade edge portion. Thereby, the first mold 4 is formed. Here, the blade 2 and the holder 3 are detachably fitted, so that the blade 2 can be easily replaced when the blade is damaged, for example. In addition, since only the blade 2 needs to be replaced at that time, the cost of the first die 4 can be reduced.

Next, the second mold 5 will be described. The second mold 5 is formed of a flexible material such as vinyl chloride in a substantially rectangular plate shape. By using a flexible material for the second mold 5 in this manner, the cutting edge is slightly pressed to the second mold 5 during the punching operation, that is, when the first mold 4 presses the second mold 5. The sheet member 10A can be cut effectively. In addition, since the sheet-like member 10A can be effectively cut even when the entire blade edge of the blade 2 is not flush, the depth of the groove 3a of the blade 2 or the holder 3 can be formed with a precise component precision. It is not necessary. That is, by using a flexible material for the second mold 5, it is not necessary to perform precise tolerance management when forming the first mold 4, and it is possible to contribute to a reduction in the mold cost.

Here, in the present embodiment, the second mold 5 is formed of a flexible material such as vinyl chloride, but is not necessarily limited to this. Alternatively, for example, a frame or a box may be formed, and a flexible material such as vinyl chloride may be embedded in the frame or the box. In this case, this material portion is opposed to the cutting edge of the blade 2 of the first die 4.

In this embodiment, one blade 2 is attached to the first mold 4.
However, the present invention is not limited to this, and the first die 4 may be provided with a plurality of blades 2. By forming the first mold 4 in this manner, more wiping and dustproofing devices 10 can be formed by a single punching operation, and further cost reduction can be achieved. In this case, for example, a plurality of first dies 4 having one blade 2 may be provided.

Next, a method of manufacturing the wiping and dust proofing apparatus 10 using the manufacturing die 1 will be described.

First, a substantially rectangular flexible resin sheet (sheet-like member) 1 containing a polyester fiber as a reinforcing thread is provided.
OA is placed on the second mold 5. Thereafter, the blade 2 of the first mold 4 is pressed against the sheet member 10A, and the sheet member 10A is punched (cut) to form two wiping dustproof devices 10.

Here, the resin sheet 1 in the present embodiment
0A is a sheet having a substantially rectangular sheet thickness of 0.85 mm, a width (horizontal direction in FIG. 3) larger than the outer circumference of the signpost body 21 shown in FIG. 5, and a height thereof. 3 is formed so that the marker 22 such as a reflection portion provided on the marker pillar main body 21 can be covered from above the marker pillar main body 21. In this case, the shape of the resin sheet 10A is not necessarily limited to the shape of the present embodiment, and may be determined appropriately in consideration of the shape of the road sign, the manufacturability, and the like.

The resin sheet 10A has a thickness of 0.85 mm in consideration of the oscillating property of the wiping member 11, as will be described later, based on the following test results.

[0026]

[Table 1]

Furthermore, the resin sheet 10A is effective in strength according to the present embodiment based on the following strength comparison test results of the material wiping member 11 and the rubber wiping member used in the present embodiment. The material is used. For this reason, damage prevention of the wiping member 11 can be achieved, and furthermore, damage prevention can be more effectively prevented in combination with the above-described damage prevention effect of the rounded corner 12a.

[0028]

[Table 2]

The wiping and dust proofing device 1 thus formed
0 will be described with reference to FIG.

The wiping and dust proofing device 10 is formed integrally with a plurality of flexible wiping members 11 formed in a cord shape, and the wiping members 11 are provided with an interval 12 between the wiping members 11. And a backbone 13.

Here, as the resin sheet 10A, for example, the physical properties thereof are as follows: tensile strength: 872.2 (N) {test method: JIS Z 1651} elongation: 17 (%) {test method: JIS Z 1651} Thickness: 176.4 (N) {Test method: JIS Z1651} and a sheet thickness of, for example, 0.85 mm is used. In this case, the sheet thickness is not necessarily 0.1.
It is not limited to 85 mm. However, the wiping member 1 when attached to the sign post body 21 shown in FIG.
In consideration of the oscillating property of No. 1, particularly the oscillating property at the time of rainfall, it is desirable to set the sheet thickness to about 0.85 mm based on the above test results.

The wiping member 11 has a width of, for example, 10 mm as shown in FIG.
There are provided as many as possible to cover the entire outer peripheral portion when mounted on one. In this case, in order to form the two wiping dustproof devices 10 with a good yield and a single punching, an interval portion 12 described below is attached to the free end 11a of the wiping member 11.
Is provided with the same roundness as the corner 12a. In addition, the interval portion 12 is formed in a substantially rectangular shape in which a corner portion 12a is rounded.
Furthermore, the backbone 13 is provided with the signpost body 2 as described later.
1 is wound around the outer periphery of the marking pillar main body 21 so that its width (the left-right direction on the paper surface of FIG. 4) corresponds to the outer circumference of the signpost main body 21.

Next, an example in which the wiping and dust proofing device 10 of the present embodiment is applied to a road sign is illustrated in FIG.

Reference numeral 20 shown in FIG. 5 indicates a road sign to which the wiping and dustproof device 10 according to the present invention is attached. The road sign 20 includes a cylindrical sign pillar main body 21, a sign part 22 provided on the sign pillar main body 21, a pedestal 23 supporting the sign pillar main body 21, and the wiping dustproof device 10 according to the present invention described above. And a cap 24 for holding the wiping and dustproof device 10 between the signpost main body 21 and a pin 25 for holding the cap 24 and engaging with the signpost main body 21.

Here, the wiping and dust proofing device 10 is mounted by winding the wiping and dust proofing device 10 on the upper part of the marking column main body 21 and fitting the cap 24 together with the main body 13 of the wiping and dust protecting device 10 to the marking column main body 21. . Then, a pin 25 is inserted into each through hole provided at the upper end of the marker pillar main body 21 and the cap 24, and each of the through holes is engaged with the first stopper having a truncated cone shape provided on the pin 25. Is In this case, the pin 25 is formed, for example, by a shaft portion having a smaller diameter than each through hole, the first stopper formed at one end of the shaft portion, and a diameter of each through hole formed at the other end of the shaft portion. And a large cylindrical second stopper. The first stopper has a frusto-conical shape on the shaft side larger than the diameter of each through hole, and a substantially cross-shaped notch is formed from one end toward the shaft side.

[0036]

According to the wiping and dust proofing device for a road sign of the present invention, since the corners of the spaces between the wiping members are rounded, it is possible to suppress stress concentration at these corners. Damage from the root of the wiping member can be effectively prevented. Further, since each wiping member is formed in a substantially rectangular shape, and the free end of the wiping member and the corner of the interval are provided with the same roundness, the wiping member of one of the wiping and dustproof devices in the two wiping and dustproof devices is used. Can be superimposed on the interval of the other wiping dustproof device. That is, two wiping dustproof devices can be formed in one punching process. Also, since the conventionally discarded space portion can be formed as a wiping member of another wiping and dust proofing device, it is possible to provide an inexpensive wiping and dust proofing device with good yield, which is an unprecedented superiority. Thus, it is possible to obtain a road sign wiping dust proof device.

Next, the manufacturing type of the road sign wiping and dust proofing device according to the present invention is a punching type provided with a cutting means, which has a corrugated blade. For this reason, it is possible to form the conventionally discarded space portion as a wiping member of another wiping dust proof device, and it is possible to form at least two wiping dust proof devices by one punching. Thus, the wiping dustproof device can be formed with good yield and at low cost. Furthermore, since the corners of the interval can be rounded by the corrugated blade, stress concentration at these corners can be suppressed, and damage from the root of the wiping member can be effectively prevented. It is possible to obtain an unprecedented excellent wiping dust-proof device for a road sign that can form a wiping dust-proof device and a road sign equipped with the device.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a production type of a road sign wiping and dust proofing device according to the present invention, wherein FIG. 1 (a) is a top view and FIG. 1 (b) is a side view. .

FIG. 2 is a plan view of a first type of a manufacturing type of the road sign wiping and dust proofing device according to the present invention, as viewed from the cutting edge side.

FIG. 3 is a diagram showing a cutting state when a road sign wiping dust-proof device according to the present invention is formed.

FIG. 4 is a plan view showing the wiping and dust proofing device for a road sign according to the present invention.

FIG. 5 is a view showing a road sign provided with the road sign wiping dust-proof device according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 manufacturing die 2 blade (cutting means) 2a corrugated blade 2b first straight blade 2c second straight blade 2d first backbone forming blade 2e second backbone forming blade 3 holder 4 first die 5 second die 10 wiping dustproof device 11 Wiping member 11a Free end 12 Spacer 12a Corner

Claims (3)

[Claims] 1. A road sign having a plurality of flexible wiping members formed in a blind shape, and a base portion in which each of the wiping members is integrally formed with a space between the wiping members. A wiping and dust proofing device, wherein the wiping member is formed in a substantially rectangular shape, roundness is provided at a free end of the wiping member, and roundness having the same shape as the roundness of the wiping member is provided at a corner of the gap. A wiping dust proofing device for a road sign, characterized in that: 2. A road sign having a plurality of flexible wiping members formed in a blind shape, and a trunk portion in which each of the wiping members is integrally formed with a space between the wiping members. A manufacturing type of a wiping dust proof device, comprising: a first die having at least one cutting means provided corresponding to the shape of the wiping dust proof device; and a holding body for holding the cutting means. A second mold in the form of a plate arranged opposite to the mold, wherein the cutting means has a corrugated blade composed of a connected body of a plurality of straight blades arranged at predetermined intervals. Manufacture type of wiping dust proof device for road signs. 3. The cutting means comprises: the corrugated blade provided with an odd number of the linear blades; a first linear blade provided at a predetermined distance from the linear blade at one end of the corrugated blade; A second straight blade provided at a predetermined interval with respect to the straight blade at the other end of the blade; and a waveform between one end of the wavy blade on the first straight blade side and one end of the second straight blade. A first trunk forming blade surrounding one vertex group of the blade, and surrounding the other vertex group of the corrugated blade between the other end of the corrugated blade on the side of the second linear blade and one end of the first linear blade. A second trunk-forming blade, wherein the other end of the first straight blade contacts the first trunk-forming blade and the other end of the second straight blade contacts the second trunk-forming blade. 3. The production type of a road sign wiping and dust proofing device according to claim 2, wherein: