JP2009125291A - Footwear for work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make removing and wearing easy, to provide excellent fitting, and to surely hold the foot of a worker. <P>SOLUTION: Footwear includes a body part (3) above an ankle part (2), and a wearing opening (4) is opened at the upper end of the body part (3). An instep part (5) and the body part (3) include an outer layer (6) made from a rubber material or a synthetic resin material. A flexible part (11) is formed at least either at a part from the front of the ankle part (2) to the instep part (5) or at a part on the back side of the ankle part (2). The flexible part (11) includes an expanding/contracting layer (12) formed of chloroprene sponge of a closed cell structure in place of the outer layer (6). <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to work footwear having a torso above an ankle part, such as work boots and underground socks, and more specifically, can be easily taken off and fit well, and can secure the foot of an operator. And work shoes that can be held.

  Generally, work boots are provided with an outer layer made of a rubber material integrally on the outside of a fabric such as knitted fabric, provided with a torso above the ankle part, and an opening at the upper end of the torso part. The work boots need to firmly hold the worker's foot so that the work can be performed against mud adhesive force and the like, and it is preferable to fit the worker's foot or lower limb. However, the outer layer is made of a rubber material having low stretchability because it is necessary to securely hold the operator's foot and sufficiently protect it from contact with other objects. For this reason, when the work boots are put on and taken off, it is difficult for the operator's foot to pass through the inside of the ankle portion. If the inside of the torso and ankle part is formed wider, it is easy to put on and take off work boots, but in this case, there is a problem that the fit to the lower limbs of the operator is lowered and it becomes a jerky state, In addition, there is a problem that the mouth is formed widely and mud, pebbles and the like easily enter the shoe.

  In order to eliminate the above problems, conventional work boots are fitted with a fastener on the side of the torso from the mouth to the ankle, which can be opened and removed easily and the fastener is closed. There is one that ensures the property (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 06-233701

  However, the conventional work boots described above require a process of attaching a fastener and an auxiliary sheet to the side of the trunk, which cannot be carried out at a low cost, and are easy to bite mud and dust into the fastener in various operations such as farming. There is a problem that the work is not easy, and it takes time to put on and take off work boots, and the fastener is easily damaged.

  The technical problem of the present invention is to provide work footwear that solves the above-mentioned problems, can be easily put on and off, can fit well, and can securely hold an operator's foot.

In order to solve the above problems, the present invention is configured as follows, for example, based on FIGS. 1 to 5 showing an embodiment of the present invention.
That is, the present invention relates to work footwear, which is provided with a torso (3) above the ankle (2), and has an opening (4) at the upper end of the torso (3). The torso (3) is a working footwear having an outer layer (6) made of a rubber material or a synthetic resin material, and is a portion from the front side of the ankle (2) to the instep (5). A stretchable part (11) is formed on at least one of the back side portion of the ankle part (2), and this stretchable part (11) has excellent stretchability instead of the outer layer (6). A stretchable layer (12) made of a material is provided.

  When putting on and taking off the above working footwear, the operator's foot is a part of the inner side of the instep of the instep and the heel that is located on the inner surface of the working footwear from the front side of the ankle to the instep. Can be used with the back side of the ankle. Since at least one of these parts has a stretchable part, when the worker's foot hits the inner surface of these parts, the stretchable layer of this stretchable part expands and expands, and the worker's foot is inside the ankle part of the footwear. Pass smoothly.

  Since the worker's feet can pass smoothly through the ankle of the footwear, the torso of the footwear does not need to be formed excessively wide, and therefore, the inner surface of the torso does not scatter when the footwear is worn. Fits well in the lower limbs. Moreover, it is not necessary to form a stretchable layer on the tip side part of the instep part of the footwear and the heel part of the footwear, and the outer layer is formed of a material such as rubber having low stretchability. The operator's feet are securely held.

  Said expansion-contraction part can be provided in any one or both of the site | part from the front side of an ankle part to an instep part, and the site | part of the back side of an ankle part. However, depending on the type of work, such as mowing work, pebbles may fly and collide with the front side of the work footwear. Therefore, it is more preferable that the part from the front side of the ankle part to the instep part is constituted by the outer layer, and the expansion / contraction part is formed only on the back side of the ankle part.

  The material having excellent stretchability means a material having good stretchability as compared with the rubber material forming the outer layer. Although this stretchability varies depending on the size of the stretchable portion, for example, the elongation when a constant load is applied in a state where the knitted fabric is integrally formed on the inner surface is 1.5 as compared with the material forming the outer layer. About -2.5 times is preferable, and it is more preferable in it being about 1.7-2.0 times. As the material excellent in stretchability, a sponge material having a closed cell structure such as chloroprene sponge can be used.

  Further, the entire mouth may be formed of the outer layer made of the rubber material as described above, but a second stretchable part is formed on at least a part of the mouthpiece, and the second stretchable part is provided with the above-described second stretchable part. When the second stretchable layer made of a material having excellent stretchability is provided in place of the outer layer, it is possible to widen the mouth when putting on and taking off the worker's feet, and the thickness of the operator's lower limbs, especially the calf Even if there is a difference in thickness, this can be absorbed by the expansion and contraction of the second elastic layer, and can be favorably fitted to the lower limbs of any worker. The second stretchable layer only needs to be more stretchable than the outer layer, and may be formed of any material that is the same material as or different from the stretchable layer.

  Said 2nd expansion-contraction part may be provided in any site | part of the circumference | surroundings of a mouth, and can be extended below from a mouth. For example, the second stretchable part can be formed on the back side of the torso and extended to the upper end of the ankle part, and the second stretchable layer can be formed continuously with the stretchable layer. In this case, it is preferable to form the stretchable layer and the second stretchable layer at the same time using the same material, because the manufacturing process can be simplified and can be carried out at a lower cost than when the stretchable layer and the second stretchable layer are formed individually. In addition, in this case, since a stretchable layer is formed from the upper end of the torso to the ankle part, it can be more easily worn and removed, and the torso can better fit the operator's lower limbs. preferable.

  Since the present invention is configured and operates as described above, the following effects can be obtained.

  (1) When putting on and taking off work footwear, if the operator's foot hits the inner surface of the ankle part, the above stretchable layer will stretch and expand, so the operator's foot can pass smoothly through the ankle part. Easy to take off.

  (2) Since the operator's feet can pass smoothly through the ankles of the footwear, it is not necessary to form the footwear's torso excessively wide, so that the inner surface of the torso fits well to the operator's lower limbs be able to.

  (3) In addition, it is not necessary to provide an elastic layer on the tip side part of the instep part of the footwear and the heel part of the footwear, and an outer layer can be formed with a material having low elasticity, so that an operator can be used at these parts. The leg can be firmly held.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention, FIG. 1 is a perspective view of a work boot in a state seen obliquely from the rear, FIG. It is a longitudinal cross-sectional view of the work boots which shows the intermediate state at the time of putting on.

  As shown in FIG. 1, the work boots (1) are provided with a trunk (3) above the ankle (2) and an opening (4) is opened at the upper end of the trunk (3). . In the trunk part (3) and the instep part (5), the outer layer (6) is made of a natural rubber material, and a knitted fabric (7) is integrally provided on the inner surface of the outer layer (6). A finger crotch portion (9) that partitions the thumb and other fingers is provided inside the toe portion (8). In addition, a treading part (18) protrudes behind the heel part (10) at a position closer to the thumb side. When the work boots (1) are taken off, the treading part ( The work boots (1) can be easily removed by pressing down 18). However, it is needless to say that the work footwear (1) of the present invention may be obtained by omitting the finger crotch portion (9) and the stepping portion (18).

The work boots (1) described above have a stretchable part (11) formed above the heel part (10), that is, on the back side of the ankle part (2).
As shown in FIG. 2, the stretchable part (11) includes a stretchable layer (12) made of chloroprene sponge having a closed cell structure, instead of the outer layer (6) made of the natural rubber material. The stretchable layer (12) has a peripheral edge (19) superimposed on the outer layer (6), and the peripheral edge (19) is covered with a protective tape (20). The chloroprene sponge constituting the stretchable part (12) has superior stretchability compared to the natural rubber material constituting the outer layer (6). Specifically, in the state where the knitted fabric (7) is attached integrally, the elongation of the outer layer (6) portion is 120%, whereas the expansion (extension) attached the cloth (7) is integrated. The layer (12) has an elongation of 210% and a stretchability of about 1.75 times.

  In the body part (3), a second stretchable part (13) is formed on the back side part of the periphery of the mouth (4). The second stretchable portion (13) includes a second stretchable layer (14) made of the same material as the stretchable layer (12) instead of the outer layer (6) made of the natural rubber material. The second stretchable part (13) extends from the mouth (4) to the upper end of the ankle part (2) on the back side of the trunk part (3), and the second stretchable layer (14) Is continuous with the stretchable layer (12).

  The above work boots (1) are bent at a substantially right angle at the ankle portion (2), and when worn, as shown in FIG. 3, the operator's foot (15) is attached to the ankle portion (2). ) And the heel (16) presses the inner surface backward. On the back side of the ankle part (2), the above-mentioned stretchable part (11) is formed and provided with a stretchable layer (12) made of a material having excellent stretchability, so that it is pressed against the operator's heel (16). The stretched portion (11) thus stretched and expanded, thereby allowing the operator's foot (15) to smoothly pass through the ankle portion (2).

A second stretchable part (13) is formed on the back side of the body part (3) from the upper end of the mouthpiece (4) to the ankle part (2), and the stretchable part (11) and It is continuous. For this reason, the operator can widen the above-mentioned cuff (4) and is easy to wear, and when wearing the work boots (1), the inner surface of the torso (3) is satisfactorily attached to the lower limb (17). Can be fitted.
On the other hand, both the instep part (5) and the heel part (10) of the work boots (1) are formed by the outer layer (6) made of the above natural rubber material. The leg (15) is securely held.

In said embodiment, said expansion-contraction part (11) and 2nd expansion-contraction part (13) were connected by the substantially same width | variety. However, in the present invention, the stretchable part and the second stretchable part are not limited to a specific size.
For example, in the first modification shown in FIG. 4 (a), the second stretchable part (13) is formed gradually and gradually downward, and in the second modification shown in FIG. 4 (b), the second stretchable part. The width of the portion (13) is gradually narrowed downward.

FIG. 5 is a perspective view of work boots showing a second embodiment of the present invention.
In the second embodiment, an expansion / contraction part (11) is formed in a region from the front side of the ankle part (2) of the work boots (1) to the instep part (5). ) Is provided with a stretchable layer (12) made of a material having excellent stretchability, instead of the outer layer (6) made of the rubber material, as in the first embodiment. When an operator wears the work boots (1), when the operator's foot passes through the ankle part (2), the instep of the foot presses against the inner surface of the elastic part (11). The stretchable layer (12) of the stretchable portion (11) expands and spreads, thereby allowing the operator's feet to smoothly pass through the ankle portion (2) as in the first embodiment.

  The work footwear described in each of the above embodiments is exemplified to embody the technical idea of the present invention, and the material, shape, arrangement, etc. of each part are limited to those of this embodiment. Rather, various modifications can be made within the scope of the claims of the present invention.

For example, in each of the above-described embodiments, the case where the work footwear is work boots has been described. However, the working footwear of the present invention may be an underground tabi. In each of the above embodiments, the outer layer is made of a natural rubber material. However, in the present invention, the outer layer may be formed of other materials such as a synthetic rubber material or a synthetic resin material. Furthermore, in the present invention, a protective cover for tightening the operator's lower limb may be provided on the above-described cuff.
In the above embodiment, since the stretchable layer and the second stretchable layer are formed of the same material, they can be manufactured easily and inexpensively. However, in the present invention, both materials may be different, and the second stretchable portion. Can be omitted. Needless to say, the stretchable layer and the second stretchable layer may be made of a material other than chloroprene sponge, such as latex sponge.

  The work footwear of the present invention can be easily put on and taken off, and can fit well, and can hold the worker's feet firmly, so it is suitable for boots and underground socks used in various work such as farm work and civil engineering work. is there.

It is a perspective view of the work boots of the state seen from diagonally backward which shows 1st Embodiment of this invention. It is a cross-sectional end view near the expansion-contraction part of the work boots of 1st Embodiment. It is a longitudinal cross-sectional view of the work boots which shows the intermediate | middle state at the time of a worker's wearing of 1st Embodiment. FIG. 4 (a) is a rear view of the work boots of the first modification, and FIG. 4 (b) is a rear view of the work boots of the second modification. It is a perspective view of the work boots which shows 2nd Embodiment of this invention.

Explanation of symbols

1… Work footwear (work boots)
2 ... ankle part 3 ... torso part 4 ... cuff 5 ... instep part 6 ... outer layer
11 ... telescopic part
12 ... Stretch layer
13 ... Second telescopic part
14 ... Second elastic layer

Claims (6)

A torso part (3) is provided above the ankle part (2), and a cuff (4) is opened at the upper end of the torso part (3). The instep part (5) and the torso part (3) are made of rubber material. Or a working footwear comprising an outer layer (6) made of a synthetic resin material,
A stretchable part (11) is formed on at least one of the part from the front side of the ankle part (2) to the instep part (5) and the part on the back side of the ankle part (2),
The work footwear is characterized in that the stretchable portion (11) includes a stretchable layer (12) made of a material having excellent stretchability instead of the outer layer (6).   The work footwear according to claim 1, wherein the stretchable part (11) is formed only on the back side of the ankle part (2).   The work footwear according to claim 1 or 2, wherein the stretchable layer (12) is made of a sponge material having a closed cell structure.   The work footwear according to claim 3, wherein the stretchable layer (12) comprises a chloroprene sponge having a closed cell structure.   A second stretchable part (13) is formed on at least a part of the periphery of the mouth (4), and the second stretchable part (13) is a material excellent in stretchability instead of the outer layer (6). The work footwear according to any one of claims 1 to 4, further comprising a second stretchable layer (14) comprising:   The work footwear according to claim 5, wherein the second stretchable layer (14) is formed continuously with the stretchable layer (12).

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