JP2004360451A - Guide stud - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide stud that has a good guiding function even in the dark, and can reliably maintain its original state without damages. <P>SOLUTION: This guide stud is provided with a phosphorescent part 12 made of phosphorescent layers emitting light in the dark and placed within a recess 10 provided on top of a stud body 2. The recess 10 is conical in section in the direction of its depth, and the phosphorescent part 12 is prepared by filling a phosphorescent pigment and resin in the recess 10 and heating, fusing and hardening them. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a guide stud, such as a circular braille tack in a plan view, which is embedded in a road surface such as a sidewalk or a roadway, or a floor surface of a building, and a guide bar in a plan view, having a long elliptical shape in which the tack is protruded.

  Prior art document information related to Braille tacks, one of the guide tacks of the present invention, is as follows.

JP-A-9-21118 Japanese Patent No. 3403705

  The Braille tack described in Patent Literature 1 includes a metal base having a substantially truncated conical shape having an insertion hole, and a metal buried shaft (screw screw) having a head and a shaft portion. Is mounted at a predetermined fixed position, and the embedded shaft is screwed into the ground to be fixed on the ground such as a road surface or a floor surface. Further, the Braille tack is provided with a concave portion on the upper surface of the base where the head of the buried shaft is arranged, and the concave portion is covered with a seal member made of a combination of arbitrary materials having different light reflection characteristics.

  The Braille tack described in Patent Literature 2 includes, similarly to Patent Literature 1, a base made of a separate metal and a buried shaft, and a head of the buried shaft is pressed into the base and a lower end of the insertion hole. The base and the buried shaft are integrated by plastically deforming the periphery. In addition, a surface layer made of resin or rubber is provided on the surface of the base to obtain a non-slip function.

  However, the Braille tack disclosed in Patent Document 1 has a wide selection range of colors and color patterns due to a sealing member having different light reflection characteristics and is excellent in design, but has an inductive effect in the dark at night or during a power failure. I can't.

  Further, the Braille tacks disclosed in Patent Literature 1 and Patent Literature 2 have a problem that when used on a roadway, both the seal member and the surface layer are separated from the base due to friction when the vehicle travels.

  In view of the above, an object of the present invention is to provide a guide stud including a Braille stud which has an excellent guiding function even in the dark and can reliably maintain its original state without being damaged.

  In order to solve the above problem, the guide stud of the present invention is a guide stud including a main body exposed on the ground and a shaft protruding from the main body and buried in the ground, wherein a concave portion is formed on an upper surface of the main body. And a light-emitting portion made of a light-emitting resin layer having a light-storing property and emitting light in the dark is provided in the concave portion.

  In this guide stud, the recess preferably has a truncated conical cross section in the depth direction.

Further, it is preferable that the light emitting section is formed by filling a light emitting pigment and a resin material in the recess, heating and melting the resin, and curing the resin.
Alternatively, it is preferable that a protrusion projecting upward is provided at an opening edge of the recess, the light emitting portion having a substantially disk shape is disposed in the recess, and the protrusion is plastically deformed substantially flush with an upper surface. .

Furthermore, it is preferable that the main body includes a base having an insertion hole and an upper portion of an embedded shaft having a head at an upper end, and is integrally fixed in a state where the embedded shaft is inserted into the insertion hole.
In this case, the embedded shaft is made of a material softer than the base, and the lower end periphery of the insertion hole in the base is plastically deformed, so that the outer peripheral portion of the embedded shaft corresponding to the deformed portion is plastically deformed and fixed. Is preferred.

  Furthermore, it is preferable that a non-slip groove is provided around the light emitting portion, and a predetermined pattern is formed by the non-slip groove and the light emitting portion.

  In the guide stud of the present invention, a light-emitting portion made of a light-emitting resin layer is provided in a concave portion formed on the upper surface of the main body, and the light-emitting resin layer constituting the light-emitting portion stores sunlight outdoors and emits fluorescent light indoors. Storing light of lamp. Then, at night or at the time of a power failure, the emitted light can be made to self-emit, so that the guiding effect can be reliably obtained even in the dark.

  In addition, since the cross section in the depth direction has a truncated cone shape in the depth direction, it is possible to prevent the light emitting portion formed of the light emitting resin layer formed inside from being detached. Specifically, the light emitting section forms one light emitting resin layer by melting a light emitting pigment in the concave portion. Alternatively, a projection protruding upward is provided at the opening edge of the recess, the substantially disk-shaped light emitting section is disposed in the recess, and the projection is plastically deformed substantially flush with the upper surface. Therefore, even if the guide stud is installed on the road, the light emitting portion does not come off due to friction with the tire of the vehicle, and the manufactured original state can be reliably maintained.

  Further, the main body is composed of a base having an insertion hole and an upper part of an embedded shaft having a head at an upper end, the embedded shaft being made of a material softer than the base, and a lower peripheral edge of the insertion hole in the base. By plastically deforming, the deformed portion and the outer peripheral portion of the embedded shaft corresponding to the deformed portion are plastically deformed and fixed, so that even if a force is applied in the axial direction in which the embedded shaft is separated from the base, they are separated. Can be reliably prevented.

  Furthermore, since a non-slip groove is provided around the light-emitting portion and a predetermined pattern is formed by the non-slip groove and the light-emitting portion, the non-slip function is substantially the same as that of a conventional resin or rubber surface layer. And a decorative effect of design can be obtained. Moreover, since the main body is directly processed, there is no breakage or detachment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1 to 3 show a Braille stud 1 which is one of the guide studs according to the first embodiment of the present invention. The Braille tack 1 comprises a main body 2 installed to be exposed on the ground, and a shaft portion 3 protruding from the main body 2 and buried in the ground. No layers are provided.

  Specifically, as shown in FIGS. 1A, 1B and 2, the Braille tack 1 is made of a base 4 made of a hard metal such as stainless steel and a metal made of a brass or the like softer than the base 4. And a buried shaft 6. The main body 2 is constituted by the base 4 and the upper part of the embedded shaft 6, and the shaft part 3 is constituted by a portion projecting below the embedded shaft 6.

  The base 4 has a substantially truncated cone shape with its upper outer peripheral edge chamfered. In the center of the base 4, there is provided an inverted convex insertion hole 5 for inserting the embedded shaft 6 and positioning the head 8.

  The buried shaft 6 is an inverted convex shaft, and has a flat plate-shaped head 8 formed at the upper end thereof to coincide with the large-diameter upper portion 5 a of the insertion hole 5. The upper shaft portion 7a of the buried shaft 6 has a slightly smaller diameter than the lower portion 5b of the insertion hole 5. The lower shaft portion 7b of the embedded shaft 6 constituting the shaft portion 3 has a smaller diameter than the upper shaft portion 7a, and is provided with annular grooves 9 at predetermined intervals on the outer peripheral portion.

  In the present embodiment, a concave portion 10 that is depressed from the head 8 to the upper shaft portion 7a is provided above the embedded shaft 6 that forms the main body 2. The recess 10 has a truncated conical cross section in the depth direction such that the opening at the upper end is smaller in diameter than the bottom at the lower end. A white reflective layer 11 is provided on the bottom, and the light storing property is provided thereon. A light-emitting portion 12 is provided, which has a light-emitting resin layer that emits light in the dark. Around the light emitting portion 12, a non-slip groove 13 which is annularly depressed is provided. The light emitting section 12 and the non-slip section form a predetermined pattern.

  The light-emitting portion 12 made of the light-emitting resin layer is obtained by filling the concave portion 10 with a powdery or granular light-emitting pigment and a resin material, and heating and melting the light-emitting pigment and the resin material, thereby curing the resin. One luminescent resin layer is formed. As the luminescent pigment, it is possible to emit light of about 15 hours in the dark by receiving the light of sunlight or fluorescent light for about 1 hour, and to use it for about 30 years. N Luminous "Luminova" (trade name) of N Corporation can be used. Further, as the resin material, acryl, polyethylene, polypropylene, ABS, polystyrene, polycarbonate and the like can be used, and among them, acrylic, ABS and polycarbonate having high hardness are preferable.

  Braille studs 1 composed of the base 4 and the buried shaft 6 are integrally fixed by one press working, and the non-slip grooves 13 are formed. Specifically, as shown in FIGS. 3A and 3B, a lower die 20 having a positioning recess 21 slightly larger than the base 4 is used for the press working. The lower die 20 is provided with an insertion recess 22 for the shaft 3 at the center of the positioning recess 21. Further, a ring-shaped press-fit portion 23 having an inner surface inclined is provided at a position corresponding to the lower edge periphery of the insertion hole 5 of the base 4. Further, the upper die (not shown) is provided with a convex portion for forming the non-slip groove 13.

  Then, as shown in FIG. 3A, after the base 4 is disposed in the positioning recess 21, the embedded shaft 6 provided with the light emitting section 12 is inserted into the insertion recess 22 through the insertion hole 5 of the base 4. After the shaft 3 of the embedded shaft 6 is inserted into the insertion hole 5 of the base 4, the shaft 3 of the embedded shaft 6 may be inserted into the insertion recess 22 of the lower die 20 together with the base 4. Further, the light emitting section 12 may be provided in the concave portion 10 after a series of pressing steps to be described later is completed and the base 4 and the embedded shaft 6 are integrated.

  Next, the upper die (not shown) is lowered to press the head 8 of the embedded shaft 6 downward. As a result, as shown in FIG. 3B, the press-fit portion 23 of the lower die 20 presses the lower peripheral edge of the insertion hole 5 in the base 4 and is pressed into the base 4 while being plastically deformed by caulking. . At the same time, the convex portion of the upper die is press-fitted into the head 8 of the buried shaft 6 constituting the main body 2 to form a non-slip groove 13 by plastic deformation.

  Thereby, in the lower part of the base 4, the portion that is plastically deformed due to the inclination of the press-fit portion 23 is deformed toward the inside of the insertion hole 5, and the outer peripheral portion of the upper shaft portion 7 a of the embedded shaft 6 corresponding to the deformed portion is simultaneously formed. Plastically deforms toward the inside (axial center). As a result, the base 4 and the embedded shaft 6 can be integrally and firmly fixed. In the buried shaft 6, a groove into which a plastically deformable material is press-fitted may be provided at a position corresponding to the plastically deformable portion of the base 4.

  The Braille studs 1 formed in this manner can be reliably prevented from being detached even when a force is applied in the axial direction in which the embedded shaft 6 is separated from the base 4 due to the plastic deformation of the base 4 and the embedded shaft 6. . In the Braille stud 1, the light-emitting resin layer constituting the light-emitting portion 12 stores light outdoors and stores light of a fluorescent lamp indoors. Then, it emits light in the dark at night or at the time of a power failure, so that an inductive effect can be obtained. The light emission effect of the light emitting portion 12 is amplified by the reflective layer 11 provided on the bottom of the concave portion 10.

  Moreover, in the present embodiment, the light emitting pigment 12 is filled in the concave portion 10 having a small diameter at the upper end opening, and the light emitting portion 12 made of one light emitting resin layer is formed by heating. Even if it is installed in the vehicle, the light emitting part 12 does not come off due to friction with the tire of the vehicle, and the manufactured original state can be reliably maintained.

  Further, in the present embodiment, since the light emitting portion 12 and the non-slip groove 13 form a predetermined pattern, a decorative effect of design can be obtained. Moreover, the non-slip groove 13 can provide substantially the same non-slip function as that of the conventional surface layer made of resin or rubber. In addition, the head 8 of the embedded shaft 6 constituting the main body 2 is directly processed. There is no breakage or detachment.

  FIGS. 4A and 4B show a Braille tack 1 according to the second embodiment. The second embodiment is different from the first embodiment in that a recess 10 ′ in which a light emitting unit 12 is provided is continuously provided above an insertion hole 5 through which an embedded shaft 6 formed in a base 4 is inserted. It is different from the form.

  Specifically, similarly to the first embodiment, the Braille tack 1 of the second embodiment includes a base 4 made of a hard metal such as stainless steel and an embedded shaft 6 made of a metal such as brass that is softer than the base 4. The main body 2 is constituted by the base 4 and the upper part of the embedded shaft 6, and the shaft part 3 is constituted by a portion protruding below the embedded shaft 6.

  The base 4 has a substantially truncated conical shape in which the upper outer peripheral edge is chamfered, and a concave portion 10 ′ for disposing the light emitting section 12 is formed in the center thereof. In the center of the bottom surface of the concave portion 10 ', an insertion hole 5 having an inverted convex shape for inserting the embedded shaft 6 and positioning the head 8 is provided.

  The buried shaft 6 has a head 8 formed at the upper end of the shaft, which substantially coincides with the large-diameter upper portion 5a of the insertion hole 5, as in the first embodiment.

  The Braille stud 1 of the second embodiment is integrally fixed by press working, as in the first embodiment. Specifically, as shown in FIG. 4B, the base 4 is placed in the lower die of the press machine, and the embedded shaft 6 is inserted through the insertion hole 5 of the base 4.

  Then, the upper die is lowered to press the head 8 of the embedded shaft 6 downward, and the embedded shaft 6 is pressed into the base 4 while plastically deforming the lower end edge of the insertion hole 5 in the base 4 by caulking. I do. Thereby, in the lower part of the base 4, the plastically deformed portion is deformed into the insertion hole 5, and the outer peripheral portion of the upper shaft portion 7 a of the embedded shaft 6 corresponding to the deformed portion is simultaneously inward (axial center). Plastically deform. As a result, similarly to the first embodiment, the base 4 and the embedded shaft 6 can be integrally and firmly fixed. In the second embodiment, the non-slip groove 13 shown in the first embodiment is not formed.

  Then, after forming the reflective layer 11 at the bottom of the recess 10 ′ closed by the head 8 of the buried shaft 6, the upper portion thereof is filled with a powdery or granular luminescent pigment and a resin material, and heated. The luminescent pigment and the resin material are melted and cured to form the luminescent portion 12 composed of one luminescent resin layer.

  The Braille stud 1 according to the second embodiment can obtain the same operation and effect as the first embodiment, and furthermore, the embedded shaft 6 does not require processing for forming the concave portion 10, and thus the first embodiment. It can be manufactured at a lower cost than the configuration of the embodiment.

  FIG. 5 shows a Braille tack 1 according to the third embodiment. The third embodiment differs from the first embodiment in that the main body 2 and the shaft 3 are integrally formed. With this configuration, the same operation and effect as those of the first embodiment can be obtained.

  6 and 7 show a Braille tack 1 according to a fourth embodiment. In the fourth embodiment, similarly to the third embodiment, the main body 2 and the shaft portion 3 are integrally formed, and the outer peripheral edge of the light emitting section 12 is locked to the upper opening edge of the concave portion 10 by plastic deformation. The present embodiment differs from the above embodiments in that a projection 25 is provided.

  Specifically, the Braille tack 1 of the fourth embodiment is integrated with the main body 2 made of a hard metal such as stainless steel so that the shaft portion 3 having the annular groove 9 projects downward at a predetermined interval. Is formed. The main body 2 has a truncated cone-shaped concave portion 10 for disposing the light emitting portion 12 at the center thereof. As shown in FIG. 7A, a protrusion 25 protruding upward is provided at an opening edge of the concave portion 10 before finishing.

  The light-emitting portion 12 made of the light-emitting resin layer of the fourth embodiment uses the same light-emitting pigment and resin material as those of the first embodiment formed in a disk shape. Here, the light-emitting portion 12 may have a trapezoidal cross-section in which the diameter of one surface is the same as the diameter of the other surface, or the light-emitting portion 12 has the same diameter as the other surface when punched out by a press or the like. Can be used. As shown in FIG. 7A, the diameter of the light emitting unit 12 having the same diameter on one surface and the other surface is formed to be substantially the same as the diameter of the upper end opening of the protrusion 25. On the other hand, the light emitting unit 12 having a trapezoidal cross section is formed such that the diameter of the small surface is substantially the same as the diameter of the upper end opening of the protrusion 25.

  The Braille tack 1 of the fourth embodiment is finished by pressing so that the light-emitting portion 12 cannot be detached, and the non-slip groove 13 is formed in the same manner as in the above-described embodiment. Specifically, as shown in FIGS. 7A and 7B, a lower mold 20 having a positioning recess 21 slightly larger than the main body 1 is used for this press working. The lower die 20 is provided with the insertion concave portion 22 of the shaft portion 3 at the center of the positioning concave portion 21, but is not provided with the ring-shaped press-fit portion 23 shown in the first embodiment. The upper die (not shown) is provided with a protrusion for forming the non-slip groove 13.

  Then, as shown in FIG. 7A, the main body 1 and the shaft portion 3 are arranged in the positioning concave portion 21 and the insertion concave portion 22, and the disc-shaped reflection layer 11 and the light emitting portion 12 are disposed in the concave portion 10. I do. Here, as shown in FIG. 7A, the light emitting unit 12 having the same diameter on one surface and the other surface can be arranged in the recess 10 without any resistance. On the other hand, the light emitting unit 12 having a trapezoidal cross section can be disposed in the concave portion 10 while the light emitting unit 12 is deformed by placing the large diameter side downward and pressing slightly from above.

  Next, the upper die (not shown) is lowered to press the main body 2 downward. Thereby, as shown in FIG. 7B, the upper mold is plastically deformed toward the inside of the concave portion 10 so that the protrusion 25 is substantially flush with the upper surface of the main body 2. At the same time, the convex portion of the upper die is press-fitted into the main body 2 to form a non-slip groove 13 due to plastic deformation.

  Thereby, in the concave portion 10, the upper edge of the light emitting portion 12 formed in a disk shape is deformed by the deformed protrusion 25, and acts to fill a gap between the inner surface of the concave portion 10 and the light emitting portion 12. In the drawing, the gap is described as being completely buried, but there is a difference in the deformation depending on the resin material used.

  The Braille stud 1 formed in this manner emits light in the dark at night or during a power outage, as in the first embodiment, and an inductive effect can be obtained. Further, in the present embodiment, since the light-emitting resin layer is formed of the light-emitting portion 12 having a disk shape, the processing is easy and the manufacture can be performed at low cost. In addition, since the light emitting portion 12 is locked by the protrusion 25 whose upper edge is plastically deformed, the light emitting portion 12 is disengaged by the friction with the tire of the vehicle even if the Braille tack 1 is installed on the road. Thus, the manufactured original state can be reliably maintained.

  Note that the guide stud of the present invention is not limited to the configuration of the above-described embodiment, and various modifications are possible.

  For example, in each of the above embodiments, as the guide stud of the present invention, the main body 2 (base 4) has a substantially truncated cone shape, and is configured by the Braille stud 1 in which one shaft portion 3 is protruded at the center thereof. As shown in FIGS. 8 (A) and 8 (B), the main body 2 (base 4) is formed into a long and oblong shape, and the main body 2 (base 4) is guided by the guide bar 30 having the shaft 3 projecting at a predetermined interval. You may comprise. In this case, as shown in the figure, the base 4 constituting the main body 2 and the embedded shaft 6 constituting the shaft portion 3 are formed separately, and the light emitting section is provided above the embedded shaft 6 constituting the main body 2. It is preferable to form the concave portion 10 in which the 12 is disposed.

  In the first and second embodiments, the base 4 is formed of stainless steel, and the buried shaft 6 is formed of brass. However, the material can be changed as desired, and the buried shaft 6 is The same operation and effect as described above can be obtained by using a soft material.

  Further, when using the light emitting portion 12 formed in a disk shape in advance as in the fourth embodiment, the concave portion 10 does not need to be formed in a truncated conical shape, and the diameter of the opening portion and the diameter of the bottom portion are not necessary. And may be constituted by cylindrical holes having the same shape.

  Further, the guide stud is mainly embedded on a road surface such as a sidewalk or a road, or on a floor of a building, but can also be used for embedding and decorating a wall surface of a building or the like.

2A and 2B show Braille tacks, which are guide tacks according to the first embodiment of the present invention, wherein FIG. 1A is a cross-sectional view and FIG. 1B is a perspective view. FIG. 2 is an exploded perspective view of FIG. 1. (A), (B) is sectional drawing which shows the manufacturing process of a braille tack. (A), (B) is sectional drawing which shows the Braille tack of 2nd Embodiment. It is sectional drawing which shows the Braille tack of 3rd Embodiment. The Braille tack of 4th Embodiment is shown, (A) is sectional drawing, (B) is a perspective view. (A), (B) is sectional drawing which shows the manufacturing process of 4th Embodiment. 7A and 7B show a guide bar as another guide stud, wherein FIG. 7A is a cross-sectional view and FIG. 7B is a perspective view.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Braille tack (guide stud) 2 ... Main body 3 ... Shaft part 4 ... Base body 5 ... Insertion hole 6 ... Embedded shaft 8 ... Head 10 ... Depression 11 ... Reflective layer 12 ... Light emitting part 13 ... Slip groove 25 ... Protrusion

Claims (7)

In a guide stud including a main body exposed to the ground and a shaft protruding from the main body and buried in the ground,
An induction stud, wherein a concave portion is provided on an upper surface of the main body, and a light emitting portion made of a light emitting resin layer having a light storing property and emitting light in the dark is provided in the concave portion.   The guide stud according to claim 1, wherein the recess has a truncated conical cross section in a depth direction.   The guide stud according to claim 1, wherein the light-emitting portion is formed by filling a light-emitting pigment and a resin material in the recess, heating and melting the resin, and curing the resin.   A protrusion protruding upward is provided at an opening edge of the recess, the substantially disk-shaped light emitting unit is disposed in the recess, and the protrusion is plastically deformed substantially flush with an upper surface. The guide stud according to claim 1 or 2, wherein the guide stud is formed.   The said main body was comprised by the base | substrate provided with the insertion hole, and the upper part of the embedded shaft provided with the head at the upper end, and was integrally fixed with the embedded shaft inserted in the said insertion hole. The guide stud according to any one of claims 1 to 4.   The embedded shaft is made of a softer material than the base, and the lower end periphery of the insertion hole in the base is plastically deformed, whereby the deformed portion and the outer peripheral portion of the embedded shaft are plastically deformed and fixed. The guide stud according to claim 5, wherein the guide stud is formed.   The guide stud according to any one of claims 1 to 6, wherein a non-slip groove is provided around the light-emitting portion, and a predetermined pattern is formed by the non-slip groove and the light-emitting portion.

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