JPS634401Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to the improvement of shoe soles and relates to the industrial field of shoe manufacturing.

(Prior Art) Conventionally, shoe soles have been made of leather, synthetic leather, or rubber. Also known was a leather sole in which leather was layered under pressure on the contact surface of a rubber base layer.

(Problems to be solved by invention) Leather soles, which have been widely used in the past, have the problem of being lightweight but slippery and lacking in durability.Synthetic leather or rubber soles are durable, but in comparison. It was heavy and lacked the familiarity of using leather for the instep side, and there were problems with breathability and other problems when the entire shoe was made of synthetic leather. In addition, products in which leather is pressed against a rubber base layer have the appearance of leather and the toughness of rubber, but they have the problem of being slippery, and providing anti-slip protrusions increases the manufacturing process and complicates the structure. There were some problems, such as:

(Means to solve the problem) However, in this invention, the leather heel side sole and the rubber tip side sole are integrally connected at the foot of the soil, so it is relatively lightweight, has excellent durability, and does not slip easily. We provide shoe soles that are hard to match with the instep leather at a relatively low price.
This solves the conventional problems mentioned above.

The heel side sole is a conventionally used leather sole, and the tip side sole is made of rubber, but in order to connect them together, the connecting edge must first be cut diagonally (depending on the thickness). (Although it is different, for example, cut diagonally so that the contact length is around 10 mm) Then apply an adhesive (an adhesive normally used for bonding leather, such as chloroprene adhesive) to the cut surface on the leather side or rubber side. After coating and temporarily adhering the connecting portions, the rubber side is pressurized and heated (at a temperature of 150°C or less) to vulcanize and shape (for example, form irregularities on the bottom surface). The heating must be carried out within a temperature range in which the leather does not undergo permanent heat shrinkage, and must be continued for a sufficient period of time to allow sufficient vulcanization. By using the adhesive and the vulcanization treatment, the leather sole and the rubber sole are strongly integrated.

In the above description, the tip and side soles are made of natural rubber, but the material is not necessarily limited to natural rubber, and synthetic rubber, compounded rubber, or the like can be used. Therefore, if vulcanization is not required, it will be integrally connected to the heel sole using an adhesive. Further, the compounded rubber refers to, for example, a compounded rubber for wear-resistant shoe soles that is mainly composed of butadiene rubber and styrene rubber.

(Function of the invention) This invention integrally connects the leather heel side sole and the rubber tip side sole, so the parts that are subjected to strong force during use have excellent durability and flexibility, and are non-slip. You can demonstrate your sexuality. In addition, the parts that do not come into direct contact with the road surface have the advantage of leather, and the overall weight is relatively light.

(Example) Next, an example of this invention will be described.

That is, the heel sole 1 is formed from tanned leather,
The side edge of the soil footing is cut diagonally to form the connecting portion 2. Next, the connecting portion 4 is provided by cutting the edge of the base 3 made of raw rubber obliquely at an angle such that it comes into contact with the connecting portion 2. After applying the chloroprene adhesive 5 to the connecting portion 2 and temporarily attaching the connecting portion 4 on top of it, the whole was heated under pressure at 130° C. for 10 minutes,
Thoroughly vulcanize the raw rubber. In this case, a concavo-convex portion 6 is formed on the ground contact surface of the rubber sole side, thereby producing the sole of this invention.

According to the embodiment described above, the heel side sole made of tanned leather and the tip side sole made of raw rubber come into contact with each other relatively widely at the diagonally cut connection parts 2 and 4, and are bonded with an adhesive and are also bonded by vulcanization. Because they are tightly connected,
The connection is made with a strength greater than that of the heel side sole or the tip side bottom, so there is no fear of breakage or cracking at the joint, and there is no discomfort peculiar to the joint. has been done. Further, since the tip side bottom is made of rubber, it can be formed into any desired uneven shape during vulcanization.

Further, the connection position between the tip side sole and the heel side sole may be moved slightly back or forth as long as it is at the foot of the ground, but it is better that it is not perpendicular to the center line of the sole (acute angle).

The vulcanization time in the above varies depending on the temperature and the thickness of the rubber, but the vulcanization time is around 150℃ and the thickness is 3mm to 5mm.
mm, it can be sufficiently vulcanized in about 10 minutes.

(Effects of the invention) This invention uses leather for the heel sole and rubber for the tip sole, so it is lighter than rubber soles, and the tip sole, which receives the most force, is strong and slippery. It has various effects such as making it more difficult.

[Brief explanation of drawings]

Fig. 1 is a bottom view of the embodiment of this invention, Fig. 2 is a plan view, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is an enlarged cross-sectional view of the connection part. be. 1... Heel bottom, 2, 4... Connecting part, 3...
Apical basolateral.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A shoe sole consisting of a rubber tip side sole integrally connected to the tip side of a leather heel side sole at the foot of the foot. 2. The sole according to claim 1 of the utility model registration claim, in which the connection between the heel side sole and the tip side sole is achieved by cutting the connecting edges of each sole obliquely, and overlapping the oblique portions and fixing them with adhesive. . 3. The shoe sole according to claim 1 of the utility model registration claim, wherein the adhesive fixation of the tip side sole and the heel side sole is performed using an adhesive, and pressurization, heating, and vulcanization of the tip side sole.