JPH07194406A - Device and method for ventilation of shoes - Google Patents

Abstract

PURPOSE: To vent effectively the inside of a shoe, by providing a boot treading type mixing chamber consisting of plural throttle orifices between air inlets at the tiptoe part and an air outlets at the heel part to discharge the mixed air at a rapid speed from toe heal part. CONSTITUTION: The air, which is sucked in from plural air inlets 24 at the tiptoe of a shoe 12, is discharged from plural air outlets 28 at the heel part or the shoe through a duct so or the shoe sole 20. A mixing chamber of a foot treading type consisting of plural throttle orifices is provided between the insole of the heel and the shoe sole. A return coil spring 40 of the mixing chamber of a foot treading type repeats compression and expansion. to suck the air in the shoe from the pump inlet 42 and to discharge it from the air outlet 28 after compulsorily mixing the air in the shoe with the air sucked through the duct 30 from the air inlet 24. By designing so, the air in the shoe can be discharged effectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ventilation of shoes, and more particularly to accelerating a large amount of low velocity malodorous air in a shoe with a small amount of high velocity air.

[0002]

2. Description of the Prior Art When walking, the odorous air that collects in the shoe, especially in the closed toe area, is expelled from the ventilated shoe by the pumping action of the pump. For example,
U.S. Pat. Nos. 2,441,879 and 2,668,372;
See U.S. Pat. Nos. 4,654,982, 4,760,651, and 4,974,342.

However, experience has shown that nevertheless known ventilated shoes can increase odor and sweat. Known ventilated shoes have a foot-operated pump on the shoe, in which a preset amount of malodorous air enters the pump and a smaller or at most the same amount of malodorous air is expelled by the pump. The amount of malodorous air entering the pump is very small and the pump must be repeatedly energized by walking or running to adequately ventilate the shoe. Such excessive movement can be undesirable or even impossible.

[0004]

OBJECTS OF THE INVENTION It is an object of the present invention to effectively and sufficiently ventilate a shoe without requiring excessive walking or running movements.

Another object is to accelerate a large amount of low velocity malodorous air with a small amount of high velocity air.

[0006]

The features of the present invention include a toe portion formed with an air inlet communicating with the inside of the shoe, a heel portion formed with an air outlet communicating with the outside of the shoe, and a flow path extending from the inlet to the outlet. It exists in a shoe ventilator. The sole may be an insole that is removably attached within the shoe or may be integrally incorporated into the shoe.

At least one throttle orifice is formed in the sole of the shoe, preferably a plurality of throttle orifices, each orifice communicating with and directed downstream of the flow passage. The orifices are preferably located in the heel and pass through the walls parallel to each other. The orifices are preferably arranged sequentially along the flow path, the flow path extending along one side of the shoe sole along its perimeter.

Foot-operated pumping means are provided on the sole of the shoe to force a small amount of primary air through each orifice at high speed downstream of the flow path. This creates a low pressure area in the flow path,
A large amount of secondary air entering the entrance from the inside of the shoe is accelerated into that area. The secondary air rides on the fast moving primary air, which forms mixed air which is forced out of the outlet. The locations of the air inlet and outlet may be opposite.

By pushing the primary air into each orifice and placing the secondary air on the primary air, the amount of air exhausted from the shoe enters the pump at most, and the ratio of the amount of malodorous air discharged from the pump is about 1: 1. It is significantly larger than the conventional ventilated shoes. According to the invention, this ratio is increased by at least a factor of 10. There is no need to repeatedly energize the pump with excessive physical movement to ventilate the shoe.

Embodiments of the present invention will be described below.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, a ventilator for a shoe 12 is shown generally at 10 in FIGS. The shoe 12 has a toe region 14, a heel region 16, and an intermediate region 18 extending between the toe and heel regions. The venting device has a sole 20 formed as an insole that is removably mounted within the shoe. However, the ventilation device 10 may be integrated into the shoe itself rather than being removably attached to the shoe.

The sole 20 has a toe portion 22 having a series of apertures 24 formed therein (see FIG. 6), the apertures 24 being in the toe region 14.
Acts as an air inlet communicating with the interior of the shoe above.
Further, the sole 20 has a heel portion 26 formed with an air outlet 28 communicating with the outside of the shoe. The sole 20 has a channel 30 extending along the circumference of the sole 20 from one side of the sole to the air inlet hole 24 to the air outlet hole 28 in the length direction of the sole.

At least one throttle orifice 3
2 is formed in the heel portion 26 of the sole of the shoe, communicates with the flow passage 30, and is preferably four throttle orifices 32. Each orifice 32 is directed downstream of the flow path 30 (see FIG. 4). The orifice 32 penetrates a separate wall 34 arranged in a zigzag shape. The walls 34 are parallel to each other and are arranged on the heel part 16. The orifices 32 are sequentially arranged in the front-rear direction along the flow path 30.

A foot operated pump 36 (see FIG. 3) is located in the heel portion 26. The pump 36 covers the sole of the shoe,
On the other hand, the heel tread 38 and the heel tread 3 which are inclined
8 has a return coil spring 40 between the sole and the sole, and a pump inlet 42 that allows air inside the shoe to enter an internal pump chamber 44. When walking, the weight of the human heel acting on the heel step portion 38 compresses the spring 40,
When a person's foot is lifted, the spring returns to its original position, which allows air to flow from the inside of the shoe to the pump inlet 4
2 and is drawn into the pump chamber 44.

When the spring 40 is compressed, a human heel covers and blocks the pump inlet 42, causing a small amount of air in the pump chamber 44, the primary air, to flow from the orifice 32 at a high velocity, as indicated by arrow A in FIG. Channel 3 in the direction of
It is pushed downstream of 0. This creates a low pressure mixing chamber, or region 46, in the flow path 30, to which the arrow B
A large amount of malodorous air, that is, secondary air, is accelerated in the direction of. Secondary air enters the flow path 30 from inside the shoe through the air inlet holes 24. The secondary air rides on the moving high velocity primary air, which forms a mixture of air, which is forced out of the outlet 28.

Compared to the prior art in which the ratio of the amount of malodorous air entering the pump to the amount of air discharged by the pump was at most 1: 1, the venturi effect that occurs downstream of the orifice 32 results in the venting device of the invention. The amount of secondary air expelled by is about 1 less than the amount of primary air
0 to 20 times larger. The low pressure region 46 directs a large amount of malodorous secondary air into the high velocity primary air, which produces a jet-like exhaust stream. In the low pressure region 46, which acts as a reaction or mixing region, the high velocity primary air imparts its energy to the secondary air.

[Brief description of drawings]

FIG. 1 is a plan view of a ventilation device for shoes according to the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG.

4 is an enlarged cross-sectional view taken along line 4-4 of FIG.

5 is an enlarged sectional view taken along line 5-5 of FIG.

6 is an enlarged sectional view taken along line 6-6 of FIG.

[Explanation of symbols]

 10 Ventilator 12 Shoe 20 Sole 24 Air inlet 28 Air outlet 30 Flow path 32 Throttle orifice 36 Pump 46 Mixing chamber

Claims (14)

[Claims] (A) A shoe sole having an air inlet communicating with the inside of the shoe at all times, an air outlet communicating with the outside of the shoe at all times, and a sole having a flow path extending from the inlet to the outlet at all times, The passage has a mixing chamber that is always open between the inlet and the outlet, and has a preset flow cross-section, (b) is formed in the shoe sole, always communicates with the mixing chamber, and is located downstream of the flow path. At least one throttle orifice directed into the mixing chamber,
The one throttle orifice has a flow cross section smaller than a preset cross section of the flow path, and (c) a small amount of primary air flows from the throttle orifice into the mixing chamber at a high velocity downstream of the flow path. The foot-operated pumping means provided on the sole for accelerating a large amount of secondary air entering the inlet from the inside of the shoe to create a low pressure region in the mixing chamber. In the mixing chamber, the secondary air is forcibly sucked into the primary air to mix,
This creates an air mixture that is forced out of the mixing chamber and released from the outlet, where the primary air imparts its high velocity energy to the secondary air and the secondary air within the mixing chamber. The ventilation device for shoes, wherein the large amount of secondary air is made several times larger than the small amount of primary air. 2. The device of claim 1, wherein the sole is an inner sole removably mounted within the shoe. 3. The apparatus according to claim 1, wherein the air inlet comprises a plurality of inlet holes extending into the flow path. 4. The device of claim 1, wherein the flow path extends along one side of the sole on one side thereof. 5. An apparatus according to claim 1, wherein an additional throttle orifice is formed in the sole of the shoe, communicates with the flow passage and is directed downstream thereof. 6. The apparatus of claim 5, wherein the orifice is located in the heel. 7. The device of claim 5, wherein the orifices pass through walls that are parallel to each other. 8. The apparatus according to claim 1, wherein the shoe sole has a toe portion having the inlet formed therein and a heel portion having the outlet formed therein. 9. The apparatus according to claim 5, wherein the orifices are sequentially arranged along the flow path. 10. The pump feeding means has a heel stepping portion which covers the shoe sole and is inclined with respect to the shoe sole, and a return spring between the stepping portion and the shoe sole. Equipment. 11. A step of: (a) forming an air inlet in the shoe sole that constantly communicates with the inside of the shoe; and (b) forming an air outlet in the shoe sole that communicates with the outside of the shoe at all times. D) forming in the shoe sole a channel that is open at all times from the inlet to the outlet, the channel having a mixing chamber between the inlet and the outlet, and a preset flow cross section; B) forming at least one throttle orifice in the sole communicating with the mixing chamber and directed into the mixing chamber downstream of the flow passage, the throttle orifice being preset in the flow passage; (E) a small amount of primary air is pushed into the mixing chamber from the one throttle orifice at a high speed downstream of the flow path, and Creating a low pressure region in the chamber and accelerating a large amount of secondary air entering the inlet from inside the shoe, wherein the secondary air is forced into the primary air in the mixing chamber. Aspirated and mixed, thereby forming an air mixture,
This is forced out of the mixing chamber and expelled from the outlet where the primary air imparts its high velocity energy to the secondary air, guiding the secondary air into the mixing chamber, A method of venting shoes, characterized in that the secondary air is several times larger than the small amount of primary air. 12. The method of claim 11, wherein the sole is removably mounted within the shoe. 13. The step of forming the at least one throttle orifice includes forming additional throttle orifices in the sole and sequentially arranging the orifices along the flow path. Item 11
The method described in. 14. The method of claim 11, wherein the inlet is formed in the toe portion of the sole and the outlet is formed in the heel portion of the sole.