JP2014177168A - Gas compression apparatus and wheel with tire of using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas compression apparatus and a wheel with a tire of using the same, capable of preventing a liquid component such as moisture existing in a compressor from being sent into a storage chamber by passing through a check valve.SOLUTION: An air pump 10 comprises a cylinder 36 and a piston 50 for generating high pressure air by enhancing pressure by compressing air, an air feed pipe 11 for storing the high pressure air generated in the cylinder 36, a check valve 45 for partitioning the cylinder 36 and the air feed pipe 11, allowing the movement of the air to the air feed pipe 11 from the cylinder 36 and not allowing its vice versa, and a drain valve 60 provided in the air pump 10 and discharging the moisture existing in the air pump 10. The moisture existing in the air pump 10 can be discharged into the atmosphere via the drain valve 60 in a process of compressing the air, and thereby, can be prevented from being sent into the air feed pipe 11 by passing through the check valve 45.

Description

The present invention relates to a gas compression apparatus including a compressor that generates high-pressure gas by compressing gas to increase pressure, and a tire-equipped wheel technology using the same.

  2. Description of the Related Art An air tire automatic air supply mechanism that generates compressed air and supplies it to a pneumatic tire when a wheel body rotates is known (see Patent Document 1).

  In this pneumatic tire automatic air supply mechanism, air is taken into the compression chamber from the inside of the hub body (see Patent Document 1, page 47, lines 16 to 18 and FIG. 2), and the taken-in air Is configured to pass through various waterproofing mechanisms before reaching the compression chamber (see the specification of Patent Document 1, page 11, line 24 to page 14, line 4, FIGS. 2, 4, and 5). For example, even when traveling on a rainy day, it is possible to prevent rainwater and the like from entering the compression chamber from the air intake port, and to prevent water such as rainwater from being sent from the compression chamber to the pneumatic tire. be able to.

  However, since the air is forced to be taken in by negative pressure, it is difficult to completely remove only moisture from the atmosphere when traveling on a rainy day. During the compression process, moisture is generated in the compression chamber in relation to the saturated water vapor pressure.

  On the other hand, a compressed air supply passage for pneumatic tires (that is, a compressed air storage chamber that is pressurized) and a compression chamber are connected via a check valve and supplied from the compression chamber to the storage chamber. The air is prevented from flowing back into the compression chamber (see the specification, page 14, line 15 to line 23, FIG. 3 of Patent Document 1).

  For this reason, the moisture taken into the compression chamber together with the air or the moisture generated in the compression chamber is sent to the storage chamber together with the compressed air for every compression operation and is accumulated therein.

The accumulated moisture inhibits the function of the check valve, or moves to the vicinity of the pneumatic tire by centrifugal force during traveling, and is sent to the pneumatic tire together with the compressed air, thereby causing various obstacles / May cause deterioration.

WO 2004/087442

The present invention solves such a problem in the prior art, and a gas compression device capable of preventing liquid components such as moisture existing in the compressor from passing through the check valve and being fed into the storage chamber, and the same An object of the present invention is to provide a wheel with a tire using the tire.

  A gas compression device according to the present invention partitions a compressor and a storage chamber from a compressor that generates high-pressure gas by compressing the gas and increasing pressure, a storage chamber that stores high-pressure gas generated in the compressor, and the compressor. A check valve that allows gas to move from the compressor to the storage chamber and not vice versa, and a discharge valve that is provided in the compressor and discharges a liquid component existing in the compressor. Features.

The features of the present invention can be broadly shown as described above, but the configuration and contents thereof, together with the objects and features, will be further clarified by the following disclosure in view of the drawings.

  A gas compression apparatus according to a first invention of the present application includes a compressor that generates high-pressure gas by compressing gas and increasing pressure, a storage chamber that stores high-pressure gas generated in the compressor, and a compressor and a storage chamber. And a check valve that allows gas to move from the compressor to the storage chamber and not vice versa, and a discharge valve that is provided in the compressor and discharges the liquid component existing in the compressor. It is characterized by this.

  Therefore, the liquid component existing in the compressor, for example, the liquid component taken into the compressor together with the gas and / or generated in the compressor is supplied to the outside of the gas compression device via the discharge valve provided in the compressor, For example, it can be discharged into the atmosphere.

  That is, the liquid component existing in the compressor can be prevented from passing through the check valve and being fed into the storage chamber.

  The gas compression device according to the second invention of the present application is the gas compression device according to the first invention of the present application. In the gas compression device according to the first invention of the present application, the discharge valve keeps the valve closed when the internal pressure of the storage chamber is equal to or lower than a predetermined set storage pressure. The valve is opened when the storage pressure is exceeded, and the liquid component existing in the compressor is discharged together with the high-pressure gas when the valve is opened.

  Therefore, by adjusting the valve opening pressure of the discharge valve in consideration of the valve opening pressure of the check valve, the internal pressure of the storage chamber is maintained at a desired set storage pressure without providing a pressure regulating valve in the storage chamber. It becomes possible to do.

  That is, it is possible to adjust the internal pressure of the storage chamber while preventing the liquid component existing in the compressor from being sent into the storage chamber, although the configuration is simple.

  The wheel with a tire using the gas compression device according to the third invention of the present application is a wheel with a tire in which a pneumatic tire is mounted on the outer periphery of the wheel body, and the gas compression according to any one of the first and second inventions of the present application. The device is mounted on the wheel body, and the compressor is configured to compress the gas as the wheel body rotates, so that the storage chamber and the pneumatic tire are connected so that the high-pressure gas in the storage chamber is fed into the pneumatic tire. It is characterized by comprising.

  Since the liquid component existing in the compressor has a larger specific gravity than the gas, the action of centrifugal force generated by the rotation of the wheel body is large, and therefore the liquid component is sent to the storage chamber attached to the wheel body. The liquid component easily reaches the pneumatic tire mounted on the outer periphery of the wheel body by centrifugal force and is likely to be sent into the pneumatic tire together with the high-pressure gas.

  For this reason, in the case of a wheel with a tire using such a gas compression device, the necessity of discharging the liquid component to the outside of the gas compression device before reaching the storage chamber is greater.

  The tire-equipped wheel using the gas compression device according to the fourth invention of the present application is the tire-equipped wheel using the gas compression device according to the third invention, wherein the compressor changes the cylinder volume by the reciprocating motion of the piston. The tire-equipped wheel is provided with a cam supported so as to be relatively rotatable with respect to the wheel main body, and when the wheel main body is rotated, a reciprocating motion is given to the piston by the cam rotating relative to the wheel main body. It is characterized by being configured.

  A so-called reciprocating type compressor that compresses gas by changing the cylinder volume by the reciprocating motion of the piston can easily obtain a high compression rate, so that a high-pressure gas with a desired pressure can be obtained even at a low speed. However, on the other hand, the amount of liquefaction associated with the compression operation increases.

For this reason, in the case of a wheel with a tire using such a gas compression device, the necessity of discharging the liquid component to the outside of the gas compression device before reaching the storage chamber is even greater.

FIG. 1 is a side view showing a wheel 5 provided with an air pump 10. FIG. 2 is a side view showing the air pump 10 attached to the hub 6. 3 is a partial cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is an enlarged view of the air pump 10 shown in FIG. 4 and shows a state where the piston 50 is at the top dead center. FIG. 6 is an enlarged view of the air pump 10 and shows a state where the piston 50 is at the bottom dead center.

  An air pump 10 that is a gas compression device according to an embodiment of the present invention and a bicycle wheel 5 that is a wheel with a tire using the gas compression device will be described.

  FIG. 1 is a side view showing a wheel 5 provided with an air pump 10.

  As shown in FIG. 1, the wheel 5 is held so as to be sandwiched between front forks 2 (not shown) provided at the front portion of a bicycle frame 1 and formed in a bifurcated shape. That is, the wheel 5 is a front wheel of a bicycle. Of course, the present invention is not limited to the front wheel of a bicycle, and can be applied to, for example, the rear wheel of a bicycle.

  The wheel 5 is rotatably supported with respect to a hub shaft 4 that is fixedly attached using a hub nut 3 to a pair of fork ends (not shown) provided at the lower end of the front fork 2. .

  That is, the wheel 5 includes a hub 6 that is rotatably supported with respect to the hub shaft 4 and is positioned at the center of the wheel 5, a rim 8 that is fixedly connected to the hub 6 via a plurality of spokes 7, and a rim. The tire 9 is a pneumatic tire that is fixedly attached to the outer side of the wheel 8 and located on the outermost periphery of the wheel 5. The hub 6, the spokes 7, and the rim 8 constitute a wheel body 13.

  The air pump 10 is fixedly attached to the approximate center of the wheel body 13. That is, the air pump 10 is attached to the hub 6 positioned at the center of the wheel body 13, and as will be described later, the high-pressure air that is high-pressure gas generated in the air pump 10 is an air supply pipe 11 that is a storage chamber. And is fed into the inside of the tire 9 via the tire valve 12.

  FIG. 2 is a side view showing the air pump 10 attached to the hub 6. 3 is a partial sectional view taken along line III-III in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

  As shown in FIGS. 3 and 4, the hub 6 includes a substantially cylindrical hub body 20, a pair of hub collars 21 fixedly fitted on both sides of the hub body 20, and fixed to the hub collars 21. The hub shaft is provided with a plurality of steel balls 24 disposed between the pair of claws 23 and the one 22 fixedly provided on the hub shaft 4. 4 is held rotatably and immovable in the axial direction of the hub shaft 4.

  A through hole 25 is provided in the approximate center of the hub body 20, and the air pump 10 is attached to the outer periphery of the hub body 20 so as to cover the through hole 25.

  The air pump 10 includes a substantially cylindrical pump body 30. As shown in FIG. 4, an attachment portion 32 formed in a shape along the surface of the hub body 20 is extended to the base end portion 31 of the pump body 30, and a pair of through holes 33 provided in the attachment portion 32 are provided. The pump body 30 is fixed to the hub body 20 by the pair of bolts 26 inserted.

  In a state where the pump body 30 is fixed to the hub body 20, the substantially cylindrical inner space 34 of the pump body 30 communicates with the inner space 27 of the hub body 20 through the through hole 25 provided in the hub body 20. doing.

  A substantially cylindrical piston 50 made of, for example, synthetic resin is disposed in the internal space 34 of the pump body 30, and a connecting pin 51 is fitted into the lower end portion of the piston 50, and a roller 52 is provided at the approximate center of the connecting pin 51. Is supported rotatably.

  An eccentric cam 28 is fixedly attached to the hub shaft 4 substantially at the center of the internal space 27 of the hub body 20. That is, the eccentric cam 28 is provided with a cylindrical cam surface 29, and the center axis of the cam surface 29 and the center axis of the hub shaft 4 are parallel and do not coincide with each other.

  A substantially donut-shaped rotating ring 53 is disposed so as to wrap a part of the cam surface 29 (the left part in FIG. 3). That is, a part of the cam surface 29 enters the inner diameter side of the rotating wheel 53 and can rotate with respect to each other. The rotating wheel 53 is provided with a through hole 54, and the end of the connecting pin 51 is inserted into the through hole 54, so that the connecting pin 51 and the rotating wheel 53 can rotate with respect to each other.

  Therefore, when the wheel 5 rotates with respect to the hub shaft 4, that is, when the wheel body 13 rotates with respect to the hub shaft 4 (hereinafter, refer to FIG. 1), the roller 52 cams according to the guidance of the rotating wheel 53. The surface 29 rolls, and as a result, the piston 50 reciprocates in the internal space 34 of the pump body 30.

  In this embodiment, the case where the eccentric cam 28 is fixedly attached to the hub shaft 4 is described as an example, but the present invention is not limited to this. The shape of the cam is not limited to the eccentric cam, and the member to which the cam is attached is not limited to a member fixed to the front fork 2 or the frame 1 of the bicycle, such as the hub shaft 4. . In short, the cam only needs to be supported so as to be relatively rotatable with respect to the wheel main body 13, and when the wheel main body 13 rotates, when the cam rotates relative to the wheel main body 13, a reciprocating motion is given to the piston 50. It only has to be configured.

  FIG. 5 is an enlarged view of the air pump 10 shown in FIG. 4 and shows a state where the piston 50 is at the top dead center. FIG. 6 is an enlarged view of the air pump 10 and shows a state where the piston 50 is at the bottom dead center.

  As shown in FIG. 5, a substantially cylindrical bearing 35 with a flange made of, for example, a sintered alloy is press-fitted and fixed in the internal space 34 in the base end portion 31 of the pump main body 30. The outer periphery of 50 is configured to slide smoothly and without play in the reciprocating direction of the piston 50.

  As shown in FIG. 6, the internal space 34 in the intermediate portion of the pump body 30 functions as a cylinder 36 that is a compression chamber of the air pump 10. The cylinder 36 and the piston 50 constitute a compressor.

  Near the upper end of the piston 50, an annular packing 55 that slides in an airtight manner with respect to the inner wall of the cylinder 36 is attached.

  An intake passage 37 that communicates from the lower end of the cylinder 36 to the internal space 27 of the hub body 20 is formed.

  A check valve holder 40 made of, for example, brass is integrally formed with the pump body 30 by, for example, insert molding, in the internal space 34 in the upper part of the pump body 30, that is, immediately above the cylinder 36.

  The check valve holder 40 is configured as a bottomed cylinder, and the bottom functions as a cylinder head 46. A through hole 41 is formed in the cylinder head 46.

  In the cylindrical inner space of the check valve holder 40, an O-ring 42 as a valve seat, a steel ball 43 as a valve, and a compression coil spring 44 as a valve spring are arranged in this order from the cylinder head 46 side. A check valve 45 is configured.

  The air supply pipe 11 is coupled to the exhaust side of the check valve 45, and the high pressure air compressed by the cylinder 36 passes through the through hole 41 provided in the cylinder head 46, the check valve 45, the air supply pipe 11, and the tire. It is fed into the tire 9 via the valve 12 (see FIG. 1).

  As shown in FIG. 6, the air pump 10 is provided with a drain valve 60 that is a discharge valve.

  The drain valve 60 is disposed in an internal space 71 of a substantially cylindrical drain valve holder 70 provided integrally with the pump body 30 slightly above the middle of the pump body 30. In this embodiment, the center line of the substantially cylindrical internal space 71 (the horizontal dashed line shown in FIG. 6) is the central axis of the internal space 34 of the pump body 30 (the vertical dashed line shown in FIG. 6). ).

  The internal space 71 of the drain valve holder 70 is configured to communicate with the upper part of the cylinder 36 (in the vicinity of the cylinder head 46) through a water conduit 73 drilled in the pump body 30 at the approximate center of the bottom 72. Yes.

  That is, as shown in FIG. 5, the cylinder 36 side of the water conduit 73 is configured to open between the packing 55 and the cylinder head 46 when the piston 50 is at the top dead center on the side wall of the cylinder 36. ing. In this embodiment, the opening on the cylinder 36 side of the water conduit 73 is provided in a portion of the side wall of the cylinder 36 adjacent to the cylinder head 46, that is, the uppermost portion of the cylinder 36. By configuring in this way, it becomes possible to discharge the water present in the cylinder 36 more reliably as will be described later.

  As shown in FIG. 6, the inner diameter and length of the water conduit 73 are set to be as small as possible in order to reduce the influence on the compression ratio of the cylinder 36.

  In the internal space 71 of the drain valve holder 70, for example, a valve 61 made of synthetic rubber, a valve holder 62 that holds the valve 61, and a compression as a valve spring that applies an elastic biasing force to the valve 61 via the valve holder 62 A coil spring 63 is disposed in this order from the water conduit 73 side, and constitutes a drain valve 60.

  The compression coil spring 63 can be adjusted in its elastic biasing force by a drainage plug 64 that is screwed into a female thread portion provided on the open end side (the side opposite to the water guide path 73 side) of the internal space 71 of the drainage valve holder 70. It is configured. The elastic urging force is adjusted by making a part or the whole of the drainage hole 65 provided in the drainage plug 64 into a hexagonal hole, for example, and rotating the drainage plug 64 with a hexagonal spanner (not shown). Can do.

  A part of the male screw portion provided on the outer diameter side of the drainage plug 64 is screwed into the female screw portion provided on the open end side of the internal space 71 of the drainage valve holder 70 as described above. The nut 74 is screwed into the other part of the male thread portion provided on the outer diameter side of the drainage plug 64 (the part exposed from the open end of the drainage valve holder 70). The combined drain valve holder 70 and nut 74 constitute a so-called double nut, which prevents the drain plug 64 from being loosened due to vibration or the like.

  In the drain valve 60, the valve 61 is pressed by the elastic biasing force of the compression coil spring 63 so as to be in close contact with the bottom 72 of the drain valve holder 70 and closes the water conduit 73, but the internal pressure of the cylinder 36 exceeds a predetermined pressure. The water in the cylinder 36 is transferred to the outside of the air pump 10, that is, into the atmosphere via the water conduit 73, the internal space 71 of the drain valve holder 70, and the drain hole 65 provided in the drain plug 64. It is configured to release.

  In this embodiment, the valve opening pressure of the drain valve 60 is set to a value obtained by adding the valve opening pressure of the check valve 45 to a preset storage pressure that is a predetermined internal pressure of the air supply pipe 11. . With this configuration, when the internal pressure of the air supply pipe 11 is equal to or lower than a predetermined set storage pressure, the drain valve 60 is kept closed and high-pressure air is supplied through the check valve 60 to the air supply pipe 11. When the internal pressure of the air supply pipe 11 exceeds the set storage pressure, the drain valve 60 is opened, and the water present in the cylinder 36 can be discharged together with the high-pressure air.

  Thus, by adjusting the valve opening pressure of the drain valve 60, it is possible to maintain the internal pressure of the air supply pipe 11 at a desired set storage pressure without providing a pressure regulating valve in the air supply pipe 11. .

  Note that the set storage pressure of the air supply pipe 11 is set to the set tire pressure of the tire 9 (appropriate predetermined value for the tire 9) when the air supply pipe 11 is directly connected to the inside of the tire 9 (air chamber). However, when the air supply pipe 11 and the inside of the tire 9 are connected via the tire valve 12 as in this embodiment, the tire valve 12 is set to the set tire pressure. The value obtained by adding the valve opening pressure.

  Next, the operation of the air pump 10 will be described.

  As shown in FIG. 1, when the wheel 5 rotates around the hub axle 4 as the bicycle (not shown) travels, the air pump 10 provided on the hub 6 constituting the wheel 5 is moved together with the wheel 5 to the hub. The shaft 4 rotates around the hub shaft 4 as a fixed shaft.

  On the other hand, as shown in FIGS. 3 and 4, the roller 52 provided at the lower end portion of the piston 50 constituting the air pump 10 is a cam surface of the eccentric cam 28 fixedly provided with respect to the hub shaft 4. Roll along the cam surface 29 along 29.

  Therefore, when the wheel 5 rotates around the hub axle 4 (see FIG. 1), as shown in FIGS. 5 and 6, the piston 50 is in a top dead center (position of the piston 50 shown in FIG. 5) in the cylinder 36. And the bottom dead center (the position of the piston 50 shown in FIG. 6) are reciprocated in the axial direction of the cylinder 36. In this example, the piston 50 reciprocates once while the wheel 5 rotates once.

  When the piston 50 reaches the bottom dead center (position shown in FIG. 6), air is sucked into the cylinder 36 from the internal space 27 of the hub body 20 via the intake passage 37. Note that. For example, air is sucked into the internal space 27 of the hub body 20 from the outside of the hub body 20 through gaps (not shown) between the plurality of steel balls 24 shown in FIG. 3.

  The air sucked into the cylinder 36 is compressed in the process in which the piston 50 moves from the bottom dead center (position shown in FIG. 6) to the top dead center (position shown in FIG. 5).

  The air compressed in the cylinder 36 (high pressure air) is shown in FIG. 6 until the internal pressure of the air supply pipe 11 reaches the set storage pressure (that is, until the air pressure of the tire 9 reaches the set tire pressure). 46 is fed into the air feeding pipe 11 through a through hole 41 and a check valve 45 provided in 46, and further from the air feeding pipe 11 through the tire valve 12 shown in FIG. ).

  When the internal pressure of the air supply pipe 11 reaches the set storage pressure (that is, when the air pressure of the tire 9 reaches the set tire pressure), the air compressed in the cylinder 36 together with the moisture present in the cylinder 36 Without passing through 45, the air is discharged to the outside of the air pump 10 through the water conduit 73, the drain valve 60, and the drain plug 64 communicating with the upper part of the cylinder 36 shown in FIG. 6.

  For some reason, when the internal pressure of the air supply pipe 11 becomes equal to or lower than the set storage pressure (that is, when the air pressure of the tire 9 becomes equal to or lower than the set tire pressure), the air compressed in the cylinder 36 passes through the check valve 45 again. Then, the air is supplied to the air supply pipe 11 and is further supplied from the air supply pipe 11 to the air chamber of the tire 9 through the tire valve 12.

  The internal pressure during compression of the cylinder 36 (the internal pressure of the cylinder 36 when the piston 50 is located at the top dead center) is maintained until the internal pressure of the air supply pipe 11 reaches the set storage pressure (that is, the air pressure of the tire 9 is set to the set tire pressure). Until the internal pressure of the air pipe 11 reaches the set storage pressure, the maximum value is maintained, and the moisture generated in the compression process of one cycle of air in the cylinder 36 Since the pressure increases as the internal pressure during compression increases, the amount that occurs after the internal pressure of the air supply pipe 11 reaches the set storage pressure, that is, after the air pressure of the tire 9 reaches the set tire pressure is the largest.

  Usually, since the air pressure of the tire 9 does not decrease so rapidly, the high-pressure air generated by the air pump 10 as the bicycle travels is once the air pressure of the tire 9 reaches the set tire pressure. In most cases, the air is discharged into the outside of the air pump 10 without being fed into the air chamber of the tire 9.

  In the above prior art, since the pressure adjusting unit as the pressure regulating valve is provided in the compressed air supply path for pneumatic tires as the storage chamber, moisture after the internal pressure of the compressed air supply path for pneumatic tires reaches a constant pressure is removed. A large amount of compressed air passes through the check valve and is fed into the compressed air supply passage for pneumatic tires. However, in the embodiment of the present invention, the amount of water after the internal pressure of the air supply pipe 11 reaches the set storage pressure is increased. The contained high pressure gas is expedient because it is discharged outside the air pump 10 via the drain valve 60 without passing through the check valve 45.

  In this embodiment, as described above (see FIG. 5), the cylinder 36 side of the water conduit 73 is the packing 55 and the cylinder head 46 when the piston 50 is at the top dead center on the side wall of the cylinder 36. , That is, in the vicinity of the cylinder head 46.

  For this reason, almost all of the water generated in the cylinder 36 up to the final process of compression in the air pump 10 (when the piston 50 reaches top dead center) can be discharged through the water conduit 73.

  Moreover, as shown in FIG. 6, the cylinder head 46 is located in the centrifugal direction (Y1 direction in the drawing) from the cylinder 36 when viewed from the hub shaft 4 (see FIG. 1) that is the rotation center of the wheel 5. Since the centrifugal force accompanying the rotation of the wheel 5 is acting in the cylinder 36, the moisture existing in the cylinder 36 is accelerated in the centrifugal direction (Y1 direction) and collected in the vicinity of the cylinder head 46.

  For this reason, the water generated in the cylinder 36 during the compression process and the water mixed in the air taken into the cylinder 10 through the intake passage 37 are discharged through the water conduit 73 provided in the vicinity of the cylinder head 46. It will be easier to do.

  In the above-described embodiment, the bicycle wheel has been described as an example of the wheel with a tire, but the present invention is not limited to this. As the wheel with a tire, for example, the present invention can be applied to a wheel with a tire that is used in all types of vehicles such as a tricycle, a bicycle with a motor, a two-wheeled vehicle, an automobile, a wheelchair, a rear car, and the like. The present invention can also be applied to wheels with tires used for other than vehicles, such as elevator guide wheels and other tire-equipped wheels. Furthermore, the gas compression apparatus according to the present invention is not limited to the one used for wheels with tires.

  Further, in the above-described embodiment, as a compressor, a so-called reciprocating compressor configured to compress gas by changing a cylinder volume by a reciprocating motion of a piston has been described as an example. It is not limited to. As the compressor, the present invention can be applied to a positive displacement compressor other than the reciprocating compressor, for example, a screw type, rotary type, or scroll type compressor. Furthermore, the present invention can be applied to a compressor other than a positive displacement compressor, for example, a centrifugal compressor.

Although the present invention has been described above as a preferred embodiment, the terminology has been used for description rather than limitation and departs from the scope and spirit of the present invention. Without departing from the scope of the appended claims. Also, while the above describes only some exemplary embodiments of the present invention in detail, those skilled in the art will recognize the exemplary implementations described above without departing from the novel teachings and advantages of the present invention. It will be readily appreciated that many variations in form are possible. Accordingly, all such modifications are intended to be included within the scope of the present invention.

10: Air pump 11: Air supply pipe 36: Cylinder 45: Check valve 50: Piston 60: Drain valve

Patent Applicant Ryuji Nakano Applicant Agent Patent Attorney Koichi Tagawa

Claims (4)

A compressor that generates high-pressure gas by compressing the gas and increasing the pressure;
A storage chamber for storing high-pressure gas generated in the compressor;
A check valve that partitions the compressor and the storage chamber, allows gas to move from the compressor to the storage chamber, and vice versa;
A discharge valve provided in the compressor, for discharging a liquid component existing in the compressor;
Having
A gas compression device characterized by the above. The gas compression device of claim 1,
The discharge valve maintains a closed state when the internal pressure of the storage chamber is equal to or lower than a predetermined set storage pressure, and opens when the internal pressure of the storage chamber exceeds the set storage pressure. Configured to discharge with high pressure gas,
It is characterized by. A wheel with a tire with a pneumatic tire mounted on the outer periphery of the wheel body,
The gas compression device according to any one of claims 1 to 2 is mounted on a wheel body,
The compressor is configured to compress gas with rotation of the wheel body,
The storage chamber and the pneumatic tire are connected, and the high-pressure gas in the storage chamber is configured to be fed into the pneumatic tire.
A wheel with tires using a gas compression device. In the wheel with a tire using the gas compression apparatus of Claim 3,
The compressor is configured to compress a gas by changing a cylinder volume by a reciprocating motion of a piston,
The tire-equipped wheel includes a cam that is supported so as to be relatively rotatable with respect to the wheel body, and is configured to give a reciprocating motion to the piston by a cam that rotates relative to the wheel body when the wheel body rotates.
It is characterized by.

Images