JP2653980B2 - Underground - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basement which can be used for civil engineering construction sites, agricultural work, and various other uses, and more particularly to a basement having a function of protecting toes from falling objects.

[0002]

2. Description of the Related Art Conventionally, as this kind of underground structure, FIG.
A protective body 11 having a bottomed semi-cylindrical shape as shown in FIG. 1 and made of a hard material such as metal is built in the thumb and four fingers of the upper (Japanese Utility Model Publication No. 60-26641), or is detachable. (Japanese Utility Model Publication No. 3-32241), when a heavy object falls on a fingertip, the protective body 11 absorbs the impact,
A device that protects a fingertip is known.

[0003]

Although any of the conventionally known devices have a strong structure and can safely and reliably protect the fingertips, all of them become structurally heavy, and the former device has a protective structure. It is necessary to stably fix the body 11 between the outer skin and the back skin of the upper, so that there is a problem that the production is extremely troublesome, and both of the latter have the bottomed semi-cylindrical protective body 11. Since processing requires cost,
There was a problem that the production cost of each basement could not be avoided.

[0004] The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to reduce the weight while keeping the toes of the toes safe against falling objects. An object of the present invention is to provide a basement that can be reliably protected and contribute to ensuring work safety, and can be manufactured at low cost.

[0005]

Means for Solving the Problems To solve the above-mentioned problems, the basement of the present invention comprises a thumb and a four-finger on the outer periphery thereof.
The present invention is characterized in that a protection plate made of a hard plate having a height capable of protecting the fingertip portion is erected from the bottom every time underground. It is more preferable that a beam plate is arched and fixed between the left and right sides of each of the protection plates of the thumb and the four fingers.

[0006]

[Function] The falling object is received at the upper end of the protective plate and the upper surface of the beam plate to protect the fingertip.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes an underground base of the present example, which hangs an upper 2 sewn with a cloth on the lower surface of an insole 3, and attaches the upper 2 to the bottom of the hung upper 2. A bottom protection plate 5 and a four-finger protection plate having an appropriate height and being curved along the outer circumference of the thumb 2a and the four-finger 2b of the upper 2 respectively. 6 is erected substantially vertically from the bottom 4 of the basement, and the protection plates 5 and 6 are arched with beam plates 7 and 8 between the left and right sides thereof, respectively. Both ends are fixed to the inner surfaces of the protection plates 5 and 6, respectively. The manufacturing procedure in this configuration is optional,
Not specified.

As shown in FIGS. 3 and 4, the protection plate 5 and the protection plate 6 are made of an iron plate or other hard plate, respectively, with a thumb 2a.
And a curved shape so as to conform to the outer peripheral shape of the four-finger portion 2b. When an impact force or a pressing force is applied from above due to dropping of a heavy object or the like, it is received so as not to damage the finger. For protection, preferably, the upper edges 5a, 6a of the vertical plate are inclined outward so that the pressing force escapes to the outside of the fingertip,
In addition, the lower edges 5b and 6b are similarly bent outward to ensure that the bottom 4 is easily and securely locked to the upper surface. The heights of the protection plates 5 and 6 are preferably set to have a height of about 15 to 20 mm in order to protect the fingers.

As shown in FIGS. 3 and 4, the beam plates 7 and 8 can cover an appropriate width, for example, an intermediate portion of a finger with an appropriate width.
That the iron plate other with a width rigid plate body was curved to each arch shape, joining the outside portions of the right and left ends on the inner faces of the left and right sides of each protection plate 5,6, riveting or caulking or adhesive Suitable bonding and fixing means 1 such as an adhesive
0 is firmly fixed. It is preferable that the height of the beam plates 7 and 8 is slightly higher than that of the protective plates 5 and 6. What is necessary is just to set it so that it may be about 35 mm in height. As a result, the fallen object is
8 prevents it from directly hitting the fingertip by receiving it on the upper surface of the arch, and at the same time, when a large impact force is applied to the protective plates 5 and 6 due to the drop of heavy objects or the like, the protective plates 5 and 6 may occur. Can be prevented by the tensile stress of the beam plates 7 and 8.

Further, the beam plates 7 and 8 are provided as two separate strips as shown in FIG. 5 (A), and are provided with the arch central portion expanded as shown in FIG. 5 (B). Alternatively, it can be provided in an arbitrary shape, such as one provided by branching the joint with the protective plates 5 and 6 as shown in FIG.
The two beam plates 7, 8 can have any shape such as the same shape, a symmetric shape, or a different shape in plan view.

[0011] underground every time the bottom 4, as shown in Figure 6, small
Ku also formed as ChoIzuruen which has flared outer peripheral portion of the thumb portion 2a and four fingers 2b slightly outward to form a rim 4b that protrudes upward peripheral end of the protruding edge, this edge A groove 4a is formed inside the bottom surface of the groove 4b, and a narrow groove 4c is formed at the edge 4b of the groove 4a so that the lower edges 5b and 6b of the protection plate can be inserted into the groove 4a. Also, as shown in FIG. 7, the underground base 4 forms an overhanging edge in the same manner as described above to form an edge 4b above its peripheral end, and protrudes upward through a groove 4a inside the bottom. The protrusion 4d is formed, and the groove 4 is formed.
A narrow groove 4c may be formed on the lower surface in the same manner as described above.

The groove 4a is provided at a lower portion of the protective plates 5, 6.
Alternatively, the overlapping portions of the protective plates 5, 6 and the beam plates 7, 8 are formed as recesses having a width capable of being inserted and fixed, and the narrow grooves 4c are formed.
Are lower edges 5 of the protection plates 5, 6 projecting further downward.
It is preferable that the portions b and 6b are formed as externally inclined grooves which can be press-fitted, and the groove 4a is formed so as to be slightly widened so that the lower end portion of the protective plate or the beam plate can be easily inserted.

The edge portion 4b is preferably a majority portion below the outer surfaces of the protection plates 5, 6 so that the protection plates 5, 6 can be stably erected, more preferably a portion of about 2/3 from below. It is preferable that the height is set so that it can be joined. The protrusion 4d may be lower than the edge 4b.

In order to manufacture a basement from the above-mentioned components, in the case of the base 4 shown in FIG. 6, first, the bottoms of the upper 2 and the midsole 3 are bonded into the base 4 and, at this time, An unvulcanized rubber sheet is bonded or an unvulcanized rubber paste 9 is adhered to the vicinity of the contact portion of the finger outer surface, while an adhesive is applied to the inner surface of the edge 4b. , the groove 4a portion located between the upper 2 and the edge 4b, when the fitted while pressing the lower portion of the protective plate 5, 6 and Hariban 7,8 which is fixed at the same time, the lower protective plate 5,6 Edges 5b and 6b are narrow grooves 4
c, and then vulcanize the bottom of the basement,
Each member will surely adhere firmly. The manufacturing procedure in the above description can be arbitrarily changed as desired, and is not an important requirement in the present invention.

In the case of the base 4 shown in FIG. 7, the upper 2 is suspended and adhered to the inside of the projection 4d in the same manner as described above. In this case, it is not necessary to use rubber glue or the like as described above. An adhesive is further applied to the inside of the edge 4b, and the lower portions of the protection plates 5, 6 to the beam plates 7, 8 are fitted into the grooves 4a between the edge 4b and the protrusions 4d in the same manner as described above. Then, the bottom may be vulcanized and formed on the underground.

According to the underground base 1 formed as described above, the protection plates 5 and 6 are erected around the fingertips 2a and 2b, and the beam plates 7 and 8 are attached. The falling object to the fingertip can be reliably received by the upper ends of the protection plates 5 and 6 and the upper surfaces of the beam plates 7 and 8. In this case, the protection plate 5,
6 is provided substantially perpendicular to the bottom 4 of the basement, and the beam plates 7, 8 are provided in an arch shape, so that they are hardly deformed even when a large pressing force is applied from above. The upper edges 5a and 6a of the protection plates 5 and 6 release the pressing force from above to the outside of the fingertip.
And the protective plates 5 and 6 cooperate with the beam plates 7 and 8 in order to prevent the protective plates 5 and 6 from expanding outwardly, so that the protective plates 5 and 6 are more difficult to be deformed. I have.
Therefore, even if a heavy object falls on the fingertip, the protection plates 5 and 6 are securely received without being deformed, and the impact of the falling object is relieved. There is no danger that the work can be performed with confidence.

Further, since each of the protective plates 5, 6 and the beam plates 7, 8 is provided outside the upper 2, the degree of freedom and the mobility of the fingertips are not different from those of a normal underground, and are good. A feeling of wearing and a sense of stability can be obtained, and the protective plates 5 and 6 do not need to be higher than the height of the finger, so that they do not become an obstacle when worn. In addition, the material used can be reduced and the weight can be reduced as compared with the structure covering the entire finger.

Further, at the time of manufacturing, the above-mentioned plates can be attached after the upper 2 is bonded to the bottom 4 each time underground, so that there is no need to perform any special processing on the upper 2 and the manufacturing is troublesome. Since each plate can be easily formed by bending or the like, manufacturing costs can be reduced.

In this embodiment, the protection plates 5, 6
And the mode in which both the beam plates 7 and 8 are provided has been described.
Even when only the protection plates 5 and 6 are provided, by receiving the falling object at the upper end thereof, the action of relaxing the falling object can be exerted and the fingertip can be protected.

[0020]

As described above, according to the basement of the present invention, the protection plate made of a hard plate curved along the outer periphery of the thumb and the four fingers of the upper is provided with a simple structure. The fingertip can be safely and reliably protected from falling objects, and compared to this type of conventional underground, the function and safety of protecting the fingertip can be reduced without lowering the underground.
And can be manufactured at a lower cost.

Further, by fixing a beam plate which is also formed by a hard plate material in an arch shape to both ends of the protection plate, the protection plate is harder to be deformed by the impact of a falling object, and the strength is increased. be able to. Further, the fallen object can be received also on the upper surface of the beam plate, and the fallen object can be prevented from directly hitting the fingertip.

Since these two plates are provided outside the upper, each finger can be moved freely, and the same comfort and exercise performance as in a normal underground can be obtained. It won't be. Furthermore, since the upper can be attached in a later step after bonding, the production is simplified and the production efficiency is increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the underground according to the present invention.

FIG. 2 is an enlarged vertical sectional view of a main part of FIG.

FIG. 3 is an enlarged plan view of a toe portion of FIG. 1;

FIG. 4 is a partially exploded perspective view of a protection plate and a beam plate.

FIGS. 5A to 5C are enlarged plan views of a toe showing another example of a beam plate.

FIG. 6 is a sectional view taken along line AA of FIG. 3;

7 is a sectional view of a toe showing another embodiment corresponding to FIG. 6;

FIG. 8 is a view for explaining a conventional example provided with a protection plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underground every 2 Upper 3 Middle bottom 4 Underground every bottom 5, 6 Protective plate 5a, 6a Upper edge 5b, 6b Lower edge 7, 8 Beam plate 9 Rubber glue 10 Rivet (joining fixing means)

Claims (2)

(57) [Claims] 1. A basement having a structure in which a protection plate made of a hard plate having a height capable of protecting the fingertip is provided on the outer periphery of each of the thumb and four fingers from the bottom. 2. The underground base according to claim 1, wherein a beam plate is fixed between the left and right side portions of the protection plate in an arched manner.