JPH0884601A - Underground - Google Patents

Abstract

PURPOSE: To provide split-toed rubber-soled shoes by which tiptoes of a foot can be reliably and safely protected from a dropping material and which can be lightly and inexpensively manufactured. CONSTITUTION: Protective plates 5 and 6 having a proper height are fixed to the outer periphery of a big toe part and a four-toe part of an upper 2 in a condition of being almost perpendicularly erected from a bottom 4 of split toed rubber-soled shoes, and beam plates 7 and 8 whose both end parts are curved in an arch shape are fixed to and formed on the protective plates 5, 6 in a condition of being extended on toe parts from both side parts of the protective plates 5 and 6. Therefore, a dropping material is received by the upper ends of the protective plates 5 and 6 and upper surfaces of the beam plates 7 and 8, and does not directly hit tiptoes.

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.
It has a bottomed semi-cylindrical shape as shown in Fig. 1 and has a protective body 11 made of a hard material such as metal built in the thumb and four fingers of the upper (Japanese Utility Model Publication No. 60-26641) or detachable. When the heavy object or the like is dropped on the fingertip, the protective body 11 absorbs this impact,
It is known that the fingertips are protected.

[0003]

All of the conventionally known ones have a strong structure and can protect fingertips safely and surely, but all of them are heavy in structure, and the former one is protected. Since the body 11 needs to be stably fixed between the upper skin and the back skin of the upper, there is a problem that it takes a lot of time to manufacture, and both of the latter have a bottomed semi-cylindrical protection body 11. Since processing costs money,
It had a problem that it could not avoid the increase in manufacturing cost every time underground.

[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]

In order to solve the above-mentioned problems, in the underground of the present invention, the outer circumferences of the thumb and the four fingers are
The feature is that a protection plate having a height capable of protecting the fingertips is erected substantially vertically from the bottom of the basement. 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 upper end of the protective plate and the upper surface of the beam plate receive falling objects to protect the fingertips.

[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 indicates the underground basin of this example, in which an upper 2 sewn with a cloth is hung on the lower surface of an insole 3, and a bottom 4 of the hung upper 1 is attached to the bottom of the upper 1. And a thumb protection plate 5 and a four-finger protection plate 6 which have a proper height and are curved along the outer circumferences of the thumb portion 2a and the four finger portion 2b of the upper 2, respectively. Standing substantially vertically from the bottom 4, the beam plates 7 and 8 are hung in an arch shape between the left and right sides of the protective plates 5 and 6, respectively, and both ends of the beam plates 7 and 8 are protected. The plates 5 and 6 are fixedly formed on the inner side surfaces thereof. The manufacturing procedure in this configuration is optional,
Not specified.

As shown in FIGS. 3 and 4, the protective plate 5 and the protective plate 6 are made of an iron plate or other hard plate, respectively, and the thumb portion 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.

The beam plate 7 and the beam plate 8 are, as shown in FIGS. 3 and 4, an iron plate and other hard plate members each having an appropriate width, for example, an appropriate width capable of covering the middle part of the finger with a barb width. It is curved in an arch shape, and the outer portions at the left and right ends are joined to the inner surfaces on the left and right sides of the protective plates 5 and 6, respectively, and firmly secured by rivet fixing or caulking, or an appropriate joining and fixing means 10 such as an adhesive. It's fastened. The height of the beam plates 7 and 8 is preferably slightly higher than that of the protective plates 5 and 6,
The height that can cover the upper side of the finger without rubbing when wearing,
For example, the height may be set to about 25 to 35 mm from the upper surface of the bottom of the basement. This prevents a falling object from being received by the arch upper surfaces of the beam plates 7 and 8 and directly hitting the fingertips, and at the same time, when a large impact force is applied to the protective plates 5 and 6 due to the falling of heavy objects or the like. Enlargement deformation of the protection plates 5 and 6 that may occur outside 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.
Both beam plates 7 and 8 may have an arbitrary shape such as the same shape, a symmetrical shape, or a different shape in a plan view.

As shown in FIG. 6, the subterranean bottom 4 is formed as an overhanging edge in which the outer peripheral portions of at least the thumb portion 2a and the four finger portions 2b of the unvulcanized bottom are slightly outwardly projected. A protruding edge 4b is formed above the peripheral edge of the overhanging edge.
A groove 4a is formed continuously with the bottom upper surface inside b, and a thin groove 4c into which the lower edges 5b and 6b of the protective plate can be inserted is formed at the edge 4b of the groove 4a. Also,
As shown in FIG. 7, the subterranean basin 4 forms an overhanging edge in the same manner as above and forms an edge portion 4b above the peripheral edge thereof,
It is also possible to form a protrusion 4d that protrudes upward through the groove 4a on the inner side thereof, and form a thin groove 4c on the lower surface of the groove 4a as described above.

The groove 4a is formed in the lower portion of the protective plates 5 and 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.
Is the lower edge 5 of the protective plates 5 and 6 which are further bent 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 a majority portion below the outer surface of the protection plates 5 and 6 so that the protection plates 5 and 6 can be erected stably, more preferably about 2/3 from below. It is preferable that the height is set so that it can be joined to. The protrusion 4d may be lower than the edge 4b.

In the case of the underground sill 4 shown in FIG. 6, in order to manufacture the underground sill from the above-mentioned components, first, the bottoms of the upper 2 and the insole 3 are bonded into the unvulcanized underground sill 4, In this case, an unvulcanized rubber sheet is bonded or unvulcanized rubber glue 9 is attached in the vicinity of the contact portion of the outer surface of the finger portion of the upper 2
On the other hand, an adhesive is applied to the inner surface of the edge portion 4b, and the protective plates 5 and 6 and the beam plates 7 and 8 fixed to the groove 4a portion located between the upper 2 and the edge portion 4b. The lower edge 5b of the protective plate 5 and
By pressing 6b into the narrow groove 4c and then vulcanizing and molding the bottom of the groove, each member is firmly bonded firmly.
The manufacturing order in the above description can be arbitrarily changed as desired and is not an important requirement in the present invention.

In the case of manufacturing the subterranean bottom 4 of FIG. 7, the upper 2 is suspended and adhered to the inside of the protrusion 4d in the same manner as above, and in this case, it is not necessary to use rubber glue or the like as described above. Further, an adhesive is applied to the inside of the edge 4b, and the lower portions of the protective plates 5 and 6 to the beam plates 7 and 8 are fitted in the groove 4a between the edge 4b and the protrusion 4d in the same manner as above. Then, the bottom may be vulcanized and molded on it.

According to the underground structure 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 objects on the fingertips 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 protective plate 5,
6 is provided almost vertically to the bottom 4 of the basement, and the beam plates 7 and 8 are provided in an arch shape, so that they are not easily deformed even if a large pressing force is applied from above. In addition, the upper edges 5a, 6a of the protective plates 5, 6 are designed to release the pressing force from above to the outside of the fingertip.
With the cooperation of the beam plates 7 and 8 to prevent the protective plates 5 and 6 from expanding and deforming to the outside, the protective plates 5 and 6 are less likely to be deformed, and the strength against the pressing force is increased. There is.
Therefore, even if a heavy object or the like falls on the fingertip, the protective plates 5 and 6 reliably receive it without deforming it and buffer the impact of the falling object. There is no fear of this, and work can be performed with peace of mind.

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, during the manufacturing, since the above-mentioned plates can be attached after the upper 2 is adhered to the bottom 4 of the underground, it is not necessary to perform any special processing on the upper 2 and the manufacturing is troublesome. However, since each plate can be easily formed by bending or the like, the manufacturing cost can be suppressed.

In this embodiment, the protective plates 5, 6 are
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 underground construction of the present invention, the fingertips can be provided with a simple structure in which the hard plate material curved along the outer circumferences of the thumb and four fingers of the upper is erected as the protection plate. It is possible to safely and reliably protect from falling objects, and it is possible to further reduce the weight of the safety underground without lowering the functionality and safety of protecting the fingertips compared to the conventional underground of this kind. And can be manufactured at a lower cost.

Further, by fixing beam plates, which are also curved in an arch shape by hard plate members, to both ends of the protective plate, the protective plate is less likely to be deformed by the impact of a falling object and the strength is increased. be able to. Further, the falling object can be received also on the upper surface of the beam plate, and the falling 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. Further, since the upper can be attached in a step after being bonded, the manufacturing is simplified and the manufacturing efficiency is improved.

[Brief description of 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.

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

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

6 is a cross-sectional view taken along the line AA of FIG.

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

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

[Explanation of symbols]

 1 Underground 2 Upper 3 Insole 4 Underground 5,6 Protective plate 5a, 6a Upper edge 5b, 6b Lower edge 7,8 Beam plate 9 Rubber glue 10 Rivet (joint fixing means)

Claims (2)

[Claims] 1. An underground structure having a structure in which a protection plate having a height capable of protecting the fingertips is provided upright from the bottom on each outer circumference of the thumb part and the four-finger part. 2. The underground system according to claim 1, wherein a beam plate is hung in an arch shape and fixed between both left and right sides of the protective plate.