WO2003066354A1 - Mecanisme d'apport automatique d'air pour pneumatiques, et dispositif de connexion a un pneumatique - Google Patents
Mecanisme d'apport automatique d'air pour pneumatiques, et dispositif de connexion a un pneumatique Download PDFInfo
- Publication number
- WO2003066354A1 WO2003066354A1 PCT/JP2002/004301 JP0204301W WO03066354A1 WO 2003066354 A1 WO2003066354 A1 WO 2003066354A1 JP 0204301 W JP0204301 W JP 0204301W WO 03066354 A1 WO03066354 A1 WO 03066354A1
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- WO
- WIPO (PCT)
- Prior art keywords
- air
- pneumatic tire
- compression
- supply mechanism
- compression chamber
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
- B60C23/12—Arrangement of tyre-inflating pumps mounted on vehicles operated by a running wheel
- B60C23/127—Arrangement of tyre-inflating pumps mounted on vehicles operated by a running wheel the pumps being mounted on the hubs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
- B60C23/12—Arrangement of tyre-inflating pumps mounted on vehicles operated by a running wheel
- B60C23/137—Arrangement of tyre-inflating pumps mounted on vehicles operated by a running wheel comprising cam driven pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
- B60C23/12—Arrangement of tyre-inflating pumps mounted on vehicles operated by a running wheel
- B60C23/126—Arrangement of tyre-inflating pumps mounted on vehicles operated by a running wheel the pumps being mounted on the wheel rims
Definitions
- the present invention relates to an automatic air supply mechanism of an air tire for automatically supplying air to a pneumatic tire rotatably provided on an axle, and an air tire connection device used for the automatic air supply mechanism.
- wheels of bicycles and automobiles are provided with pneumatic tires that hold air. Even if such a pneumatic tire is inflated so as to have a predetermined air pressure, the air is gradually released over time and the air pressure is reduced. If the air pressure drops too much, it will cause problems such as difficulty in operating the steering wheel. Therefore, it is necessary to supply air to the pneumatic tire when the air pressure drops too much below the predetermined pressure.
- the present invention has been made in view of the above circumstances, and has an automatic air supply mechanism for a pneumatic tire and a pneumatic tire capable of automatically supplying air to the pneumatic tire by rotation of the pneumatic tire relative to an axle when the air pressure of the pneumatic tire becomes lower than a predetermined value. Aiming to provide tire connection equipment Target.
- An automatic pneumatic tire air supply mechanism is an automatic pneumatic tire air supply mechanism for automatically supplying air to a pneumatic tire provided on a wheel body rotatable with respect to an axle,
- An air feeding unit that is connected to the pneumatic tire so as to be able to ventilate and sends air to the pneumatic tire
- the air feeding section is characterized in that it has a compression section that can compress air when the wheel body rotates with respect to the axle.
- the pneumatic tire connection device is a pneumatic tire connection device for connecting an automatic air supply mechanism of a pneumatic tire provided on a wheel body rotatable with respect to an axle to the pneumatic tire, for automatically supplying air to the pneumatic tire.
- the air tire connection air path is connected to the air path provided in the automatic air supply mechanism so that air is supplied from the automatic air supply mechanism to the pneumatic tire. It is possible to send,
- the tire connection part has a valve hole opened so as to communicate from the pneumatic tire connection ventilation path to the outside, and has a check valve to prevent backflow of air from the pneumatic tire to the pneumatic tire connection ventilation path.
- the valve hole When the check valve is installed in this valve mounting part, the valve hole is closed by the check valve, and when connecting the tire connection part and the pneumatic tire, the air from the pneumatic tire to the air passage for pneumatic tire connection is connected. Backflow is prevented, and air is fed into the valve hole from the pneumatic tire connection ventilation path, so that the valve hole is opened and air can enter the pneumatic tire from the pneumatic tire connection ventilation path.
- the air introduction hole is provided with a backflow prevention means for the air introduction hole for preventing air from flowing from the air passage for pneumatic tire connection to the outside.
- FIG. 1 is a side view of wheels of a bicycle having an automatic pneumatic tire air supply mechanism according to a first embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional explanatory view along the line II-II of FIG.
- FIG. 3 is a vertical sectional view taken along the line III-III in FIG.
- FIG. 4 is an enlarged cross-sectional explanatory view along the line IV-IV in FIG.
- FIG. 5 is an explanatory cross-sectional view showing a state where air in a compression chamber is compressed.
- FIG. 6 is an enlarged sectional explanatory view of a main part of a bicycle wheel having an automatic air supply mechanism for a bicycle pneumatic tire according to a second embodiment of the present invention.
- FIG. 7 is an explanatory cross-sectional view illustrating a state where air in a compression chamber is compressed in the second embodiment.
- FIG. 8 is an explanatory view in cross section of a main part of a bicycle wheel having an automatic air supply mechanism for a pneumatic bicycle tire according to a third embodiment of the present invention.
- FIG. 9 is an enlarged cross-sectional explanatory view of a main part of FIG.
- FIG. 10 is an explanatory cross-sectional view showing a state where air in a compression chamber is compressed in the third embodiment.
- FIG. 11 is an explanatory sectional view of a wheel of an automobile having an automatic pneumatic tire air supply mechanism according to a fourth embodiment of the present invention.
- FIG. 12 is an enlarged cross-sectional explanatory view along the line XII-XII of FIG.
- FIG. 13 is an enlarged cross-sectional explanatory view of a state where the pneumatic tire connection portion of the fourth embodiment is connected to the valve of the pneumatic tire.
- FIG. 14 is an enlarged cross-sectional explanation of the fourth embodiment in which the air pressure in the constant pressure holding chamber is higher than the air pressure of the pneumatic tire and the air in the constant pressure holding chamber presses the valve of the pneumatic tire and flows to the pneumatic tire.
- FIG. 14 is an enlarged cross-sectional explanation of the fourth embodiment in which the air pressure in the constant pressure holding chamber is higher than the air pressure of the pneumatic tire and the air in the constant pressure holding chamber presses the valve of the pneumatic tire and flows to the pneumatic tire.
- FIG. 15 is an enlarged cross-sectional explanatory view showing a state where the air pressure of the constant-pressure holding chamber and the air pressure of the pneumatic tire are the same.
- FIG. 16 is an enlarged sectional explanatory view of a main part of another embodiment of the air feeding section.
- FIG. 17 is a side view of a bicycle wheel having an automatic pneumatic tire air supply mechanism according to the fifth embodiment.
- FIG. 18 is an enlarged cross-sectional view of a main part of a cam and a cam contact portion according to the fifth embodiment.
- FIG. 19 is an enlarged cross-sectional explanatory view of a main part of a bicycle wheel having an automatic air supply mechanism for a pneumatic tire for a bicycle according to a sixth embodiment of the present invention.
- FIG. 20 is an explanatory sectional view taken along the line XX—XX of FIG.
- FIG. 21A is an enlarged cross-sectional explanatory view taken along the line XXI—XXI in FIG.
- FIG. 21 (B) is an enlarged cross-sectional explanatory view showing the positional relationship between the casing operation member and the casing support member in a state where the compression ratio is reduced by rotating the compression chamber.
- FIG. 22 (A) is an enlarged vertical cross-sectional explanatory view of the compression section.
- FIG. 22 (B) is an enlarged vertical cross-sectional explanatory view of the compression section after the compression ratio has been adjusted by the compression ratio adjusting means from the state of FIG. 22 (A).
- FIG. 23 is an enlarged side view of a part of the pneumatic tire connection device in section.
- FIG. 24 is an enlarged side view showing a cross section of a part of another embodiment of the pneumatic tire connection device.
- FIG. 1 is a side view of a wheel for a bicycle provided with an automatic air supply mechanism for a pneumatic tire according to a first embodiment of the present invention
- FIG. 2 is an enlarged sectional explanatory view taken along line II-II of FIG.
- FIG. 3 is an enlarged sectional explanatory view taken along the line III-III in FIG.
- the automatic air supply mechanism for a pneumatic tire according to the first embodiment is provided on a bicycle wheel 100.
- the bicycle wheel 100 having the automatic pneumatic tire air supply mechanism 1 includes an axle 101 and a wheel body 110 rotatable with respect to the axle 101.
- the axle 101 has a threaded portion 101a on the outer periphery as shown in FIG.
- the wheel body 110 includes a hap 102, a pneumatic tire 103, and an automatic air supply mechanism 1, as shown in FIG.
- the hub 102 is formed of a cylindrical body as shown in Fig. 2, and the inner peripheral sides on both left and right sides are provided with steel ball rolling receiving portions 102a and 102a, respectively. Have been.
- the pneumatic tire 103 is removably locked to the rim 105 so that it can rotate with the rim 105 relative to the axle 101.
- an air holding tube 103b is provided inside the pneumatic tire 103 as an air holding unit for holding air.
- the air holding tube 103 b is provided with a valve 106 for letting air in and out.
- the valve 106 is formed of a cylindrical body, and is provided with an air inlet 106a at the lower end in the figure and a valve hole 106b at the upper end in the figure. Further, the valve hole 106 b is closed by a cylindrical backflow prevention valve 106 c made of synthetic rubber which covers the outer periphery of the valve 106.
- the valve 106 is inserted into a cylindrical valve mounting base 103c provided on the air holding tube 103b, and is removed through a valve stopper nut 106d screwed to the pulp mounting base 103c. It has been stopped. Then, when air is pumped from the air inlet 106a by an air pump or the like against the elasticity of the check valve 106c closing the valve hole 106b, the check valve 106c is pushed away. Air enters the air holding tube 103b. After air enters the air holding tube 103b, the elasticity of the check ring 106c closes the valve hole 106b. This prevents air in the air holding tube 103b from going out of the valve hole 106b.
- the backflow prevention valve 106c, valve mounting base 103c and valve stopper nut 106d are the ones used in the air holding tube 103b of general bicycle wheels. It is.
- the left and right sides of the axle 101 of the wheel 100 configured as described above are fixed to the bicycle body via nuts 108, 108 (shown in FIG. 2). As a result, the wheel body 110 can be rotated on the bicycle body.
- the automatic air supply mechanism i for a bicycle pneumatic tire according to the first embodiment includes an air feeding section 1a for feeding air to the pneumatic tire 103 as shown in FIGS.
- the air feeding section la includes a compression section 3 for compressing the air and a constant pressure holding section 2 for holding the air compressed by the compression section 3 at a constant pressure.
- the compression section 3 includes a compression chamber 31 for compressing air, and compression operation means 32 for compressing the air in the compression chamber 31.
- the compression chamber 31 is formed inside an inner casing 3a having a circular cross section.
- the inner casing 3a is supported such that the lower end side in FIGS. 2 and 3 is inserted into the outer casing 3b having a circular cross section.
- a hub mounting portion 30b is provided on the lower end side of the outer casing 3b in FIGS.
- the hub mounting portion 30b has a force S and is fixed to the outer periphery of the hub 102 via bolts 30c and 30c.
- the inner casing 3a is attached to the outer peripheral side of the hub 102 via the outer casing 3b, and extends radially outward from the outer periphery of the hub 102 to the axle 101.
- a partition wall 7 is provided inside the inner casing 3a attached to the hub 102 in this way.
- the partition wall 7 defines the interior of the inner casing 3a, a compression chamber 31 on the lower side of the figure, and a constant-pressure holding space 13b of a constant-pressure holding section 2 described later on the upper side of the figure.
- a communication hole 71 is formed in the partition wall 7, and the compression chamber 31 and the constant-pressure holding space portion 13 b are communicable with the communication hole 71 through the communication hole 71.
- the communication hole 71 is provided with a check valve 4.
- the backflow prevention valve 4 is a backflow prevention means for preventing air from flowing back from the constant pressure holding unit 2 to the compression chamber 31.
- the check valve 4 is provided on the constant pressure holding unit 2 side. It consists of 4 ball valves.
- the ball valve 4 includes a ball 41, a ring-shaped ball receiving packing 42 made of synthetic rubber for receiving the ball, and a ball receiving packing for the ball 41.
- a ball biasing coil panel 43 serving as a biasing member for biasing the ball toward the side c; and, by the biasing force of the ball biasing coil spring 43, the ball 41 is moved from the constant pressure holding portion 2 side.
- the communication hole 7 1 is closed.
- the compression chamber 31 is provided with a suction hole 31a for introducing air into the compression chamber 31 from outside.
- a rod guide port 37 is provided below the compression chamber 31 in FIGS. 2 and 3.
- the compression operation means 32 includes a rod-shaped piston rod 8 as a compression operation body extended in the radial direction of the axle 101 and a cam 9.
- the piston rod 8 is slidably passed through a rod guide port 37 of the compression chamber 31.
- the upper portion of the piston rod 8 extending outward in the radial direction of the axle 101 is placed in the compression chamber 31.
- a disc-shaped sliding portion 32a is provided in a portion of the compression chamber 31 that is placed in the compression chamber 31.
- the sliding portion 3 2 a is formed to have a diameter substantially equal to the inner diameter of the compression chamber 31, and is slidable in the axial direction of the compression chamber 31 along the inner peripheral wall of the compression chamber 31. It has been.
- the sliding portion 32a is provided with a ring-shaped packing 32b made of synthetic rubber.
- the lower part of the piston rod 8 extending inward in the radial direction of the axle 101 is a piston introduction hole 10 formed in the hub 102 from the rod guide port 37 of the compression chamber 31.
- the hub 102 is inserted into the inner peripheral side by passing through 2d.
- this portion is provided with a cam contact portion 32c.
- the cam abutting portion 32c has a roller shaft 32d and a left and right pair rotatably supported on the biston opening 8 by the roller shaft 32d. It is composed of those provided with rollers 32e and 32e. The left and right ends of the roller single shaft 32d are projected from the rollers 32e and 32e, respectively.
- the rollers 32e and 32e of the cam abutting portion 32c configured as described above abut against the cam 9 fixed to the axle 101.
- the cam 9 is formed of a disc-shaped groove cam, and a cam groove 92 formed over the entire circumference is provided on the outer peripheral side of the cam 9.
- the cam groove 92 includes a cam surface 92 a that defines the contour of the cam 9 that travels in contact with the rollers 32 e and 32 e.
- the shaft contact portions 92b and 92b for receiving the roller shaft 32d of the cam contact portion 32c are provided.
- the cam surface 92 a is formed in an arc shape over the entire circumference at a predetermined depth from the outer peripheral surface of the cam 9.
- the shaft contact portions 92b, 92b are formed in opposing walls formed in the cam grooves 92 so as to oppose the cam surfaces 92a.
- the cam 9 of this embodiment constitutes a positive-action cam, and the cam 9 and the rollers 32 e and 32 e of the biston rod 8 are always kept in contact with each other.
- the cam 9 has an axle through hole 91 through which the axle 101 is inserted.
- the center ⁇ 2 of the axle insertion hole 91 is separated by a predetermined distance from the cam surface 92a and the center O1 of the shaft contact portions 92b, 92b.
- the position of the cam surface 92a in contact with the rollers 32e, 32e shown in FIG. 3 is the small-diameter portion A where the distance from the axle ⁇ the center of the through hole 91 ⁇ 2 becomes smallest.
- the distance from the small diameter portion A to the center O2 of the axle ⁇ through hole 91 in the circumferential direction gradually increases, and the distance from the center ⁇ 2 of the axle ⁇ through hole 91 to the halfway position is the largest. Large diameter part B becomes.
- the constant-pressure holding section 2 of the air feeding section 1a is for holding air at a constant pressure.
- the constant-pressure holding section of this embodiment includes a connection section 13 connecting the compression section 3 and the pneumatic tire 103. It is composed of
- connection portion 13 includes a constant-pressure holding space portion 13 b defined above the compression chamber 31 in the inner casing 3 a in FIG. 2, a connection pipe 21, and a connection pipe 13 c It is composed of
- connection pipe 21 is made of a tubular material, and has a ventilation path 21a inside.
- the base end of the connection pipe 21 is attached via a fixing nut 21b so as to enter the constant pressure holding space 13b of the inner casing 3a.
- the distal end side of the connecting pipe 21 extends from the inner casing 3a to the radial outside of the axle 101. Further, by this attachment, the constant pressure holding space 13b and the ventilation path 21a are connected to be able to ventilate.
- connection pipe 13c is made of an elastic material, and has an air passage 13a inside.
- the connection pipe 13c is attached to the distal end of the connection pipe 21 so that the end of the connection pipe 13c is pushed into the outer periphery of the connection pipe 21.
- the ventilation path 21a of the connection pipe 21 and the ventilation path 13a of the connection pipe 13c are connected to form a single ventilation path in the connection part 13, and as a result, the inner casing is formed.
- the constant pressure holding space 13b of 3a and the connection pipe 13c are connected.
- a pneumatic tire connection portion 16 is provided at the distal end of the opposite connection pipe 13c attached to the connection pipe 21 so as to be detachably connected to the pneumatic tire 103 as shown in FIG. ing.
- the pneumatic tire connection portion 16 includes a packing 16a and a nut locking piece 16b which is locked to a valve locking nut 106d of the air holding tube 103b. Then, while the packing 16a is in contact with the end face of the pulp 106, the nut locking piece 16b is locked to the valve fixing nut 106d. Thereby, the distal end side of the connection pipe 13c is connected to the air holding tube 103b so as to be able to ventilate.
- the axle 101 of the bicycle wheel 100 with the automatic air supply mechanism for the pneumatic tire for bicycles is mounted on the bicycle body, and the sliding part 32a is at the bottom dead center position A.
- the pneumatic tire 103 is rotated with respect to the axle 101 by, for example, running from the state shown in FIG.
- the hub 102 rotates along with the rotation, and together with the hub 102, the roller 32 of the piston rod 8 e force from the small diameter portion A to the large diameter portion B of the cam surface 9 2 a of the cam 9 together with the hub 102.
- the cam 9 functions as a pressing portion that presses the piston rod 8.
- the movement of the piston rod 8 causes the sliding portion 3 2 a to move from the bottom dead center position A 1 to the top dead center position B 1 in the compression chamber 31 along the inner wall surface of the compression chamber 31. Slide inside the compression chamber 31.
- the piston rod 8 travels from the large-diameter portion B to the small-diameter portion A of the cam surface 92 a of the cam 9.
- the sliding portion 32a moves in the compression chamber 31 from the top dead center position B1 to the bottom dead center position A1.
- the sliding portion 32a slides from the top dead center position B1 to the bottom dead center position A1
- external air is sucked into the compression chamber 31 through the suction hole 31a.
- the hap 102 rotates, the sliding portion 3 2a of the piston 8 moves again from the bottom dead center position A 1 to the top dead center position B 1 as described above, and the compression chamber 3 Make the air in 1 a constant compression ratio.
- the sliding portion 32a reciprocates in the range from the bottom dead center position A1 to the top dead center position B1.
- the sliding portion 32a reciprocates in the above range, in a steady state, air in the compression chamber flows into the pneumatic tire from the compression chamber, and the air pressure of the pneumatic tire is adjusted to the pneumatic pressure suitable for the pneumatic tire. Is set so that the air in the compression chamber is compressed at a predetermined compression ratio.
- the steady state means that the air in the compression chamber is repeatedly compressed.
- the compression sliding portion 32a repeatedly reciprocates in the above-described range, whereby the air pressure in the compression chamber approaches a constant value.
- the ball 41 of the check ring 4 is pressed from the compression chamber 31 by the air pressure of the compressed air.
- the ball 41 of the check ring 4 receives the pressing force of the air pressure in the constant pressure holding chamber 11 and the urging force of the ball urging coil panel 43 from the constant pressure holding chamber 11 side. Therefore, when the pressing force from the constant pressure holding chamber 11 side is smaller than the pressing force from inside the compression chamber 31, the ball 41 of the check valve 4 moves to the constant pressure holding chamber 11 side. Open the communication hole 7 1. Thereby, the air compressed in the compression chamber 31 is sent from the communication hole 71 to the constant pressure holding chamber 11.
- the ball 41 of the check ring 4 closes the communication hole 71 when the sliding portion 32a moves from the top dead center position B1 to the bottom dead center position A1 in the compression chamber 31. . This prevents the air in the constant pressure holding chamber 11 from returning to the compression chamber 31.
- the check valve 106c which is in use, is pressed from inside the valve 106.
- the pressure applied to the check ring 106c from the inside by the air pressure of the constant pressure holding chamber 11 is reduced by the elastic force of the check valve 106c and the air pressure in the air holding tube 103b. If the pressure is greater than the sum of the pressure applied to the valve 106c, the check valve 1106c closing the valve hole 106b is pushed from the inside, and the air flows from the constant-pressure holding chamber 111 to the air. Flow into the holding tube 103b.
- the valve 10 of the pneumatic tire 103 will be removed. 6 allows the air pressure of the pneumatic tire 103 to be maintained as it is. Therefore, the valve 106 of the pneumatic tire 103 functions as a backflow preventing means for preventing the backflow of air from the pneumatic tire 103 to the air feeding section 1a.
- connection pipe 13 c when the air pressure of the air holding tube 103 b is set to a predetermined value by the automatic air supply mechanism 1 as described above, and the connection pipe 13 c is removed, the connection pipe of the constant pressure holding unit 2 is removed. 2 Pull out the connecting pipe 13 c from 1 and operate the valve nut 106 d holding the pneumatic tire connection 16 to remove it from the pneumatic tire 103. Thereby, the connection pipe 13c can be removed. After the connection pipe 13c is removed, the valve 106 prevents air from the pneumatic tire from leaving the air inlet 106a, and can be used in the same manner as a conventional product.
- the cam 9 according to the first embodiment is composed of a left cam piece 9a and a right cam piece 9b, and is constructed by assembling them with locking means such as bolts. I have. When assembling the left cam piece 9a and the right cam piece 9b, the roller shaft 3 2d and the rollers 1 2 e Put in and assemble.
- the present invention is not limited to this mode and can be changed as appropriate. For example, removing the right side wall 9c or the left side wall 9d of the force groove 9 2 to form an opening on the right or left side of the cam groove 92, and forming the shaft contact portion 9 2b on the left side of the cam groove 92. It is formed on one of the wall 9d or the right side wall 9c, and the roller shaft 32d and the rollers 32e, 32e assembled to the piston rod 8 can be inserted into and removed from the cam groove 92 through the opening. .
- the casing 3a, 3b on which the piston rod 8 is assembled can be operated without disassembling the hub, and the piston rod 8 and cam
- the casings 3a and 3b can be removed from the hub 102, and the casings 3a and 3b can be inspected and repaired, so that maintenance can be easily performed.
- the cam groove 92 is formed with an opening through which the roller shaft 32 d and the rollers 32 e and 32 e are put in and out, the cam 9 can be formed from one cam piece. It can be easy.
- the piston rod 8 in the automatic air supply mechanism for a pneumatic tire according to the second embodiment includes one roller 132e rotatably supported by a roller shaft 32d.
- the piston rod 8 is always inwardly radiated in the radial direction of the axle 101 (shown in the figure) by a coil spring 83 for biasing the piston piston as a piston biasing member disposed in the compression chamber 31. (Lower side).
- this coil spring 8 3 6 is abutted against the partition wall 7, and the lower end of FIG. 6 in the coil panel 83 is stored in the spring storage hole 84 provided in the piston opening 8, and The piston rod 8 is always in contact with the inner end surface 84 a in the radial direction of the axle 101.
- a cam surface 92 a of the cam 9 that contacts the roller 32 e is formed on an end surface in a concave portion 95 that is recessed in a U-shaped cross section at a predetermined depth on the outer peripheral surface of the cam 9.
- the cam surface 92a is formed in an arc shape as in the first embodiment, and the center O1 of the force surface 92a is the rotation center O2 of the hap 102.
- the center of rotation of the hap 102 is located at a position that is half the circumference from the small portion A where the distance from the center O 2 of rotation of the hap 102 is the smallest.
- a large-diameter portion B at which the distance is greatest.
- the rest of the second embodiment has the same configuration as that of the first embodiment.
- the roller 32e contacting the small-diameter portion A of the cam surface 92a is pressed by the cam surface 92a with the rotation of the hub 102.
- the roller 32e is pressed against the cam surface 92a by the urging force of the biasing coil spring 83.
- 9 Contact the 2a and travel from the large diameter section B to the small diameter section A.
- the roller 32 e of the piston rod 8 travels along the cam surface 92 a, and the sliding portion 32 a of the piston opening 8 becomes the same as that of the first embodiment.
- the reciprocating motion from the bottom dead center position A1 shown in FIG. 6 to the top dead center position B1 shown in FIG. 7 is repeated to compress the air in the compression chamber 31 to a constant compression ratio.
- the compression chamber 31 in the automatic pneumatic tire air supply mechanism of the third embodiment is formed by a casing 3c having a circular cross section. Then, as shown in FIG. 9, a mounting shaft 36 having a threaded portion 36 a provided on the casing 3 c, a force S 6, a mounting hole 10 2 f formed in the hub 102, and a hub 10 2
- the fixing nut 36 b is screwed into the threaded portion 36 a of the mounting shaft 36, which is inserted from the inner peripheral side to the outer peripheral side. Therefore, the compression chamber 31 of the third embodiment is fixed to the inner peripheral side of the hub 102.
- the suction hole 31 a of the compression chamber 31 is provided with a valve element 34 b having a packing 34 d for preventing air from flowing out of the compression chamber 31.
- the valve element 34 b in this embodiment is disposed inside the cylindrical section 34.
- the cylindrical portion 34 is provided with an air intake port 34c at the distal end on the left end in the figure, and the base end on the right end in the figure is outside the suction hole 31a of the compression chamber 31. It is attached to the side wall of the compression chamber 31 by fixing means such as bolts so as to cover the compression chamber 31.
- the compression chamber 31 is communicated with the outside via the suction port 31a and the air intake port 34c.
- the valve element 34 b is pivotally supported by the cylinder section 34 so that the air intake port 34 c can be opened and closed from inside the cylinder section 34.
- the valve body 34b is constantly urged toward the air intake port 34c by an urging member.
- the piston rod 80 as a compression operation body of the compression operation means has a disk-shaped sliding portion 32a, but the piston rod 80 of this embodiment is different from the first embodiment in that No rollers are provided. Therefore, in the third embodiment, the tip of the piston rod 80 constitutes the cam contact portion 32 c that contacts the cam surface of the cam 9 with the cam 92. Further, the piston rod 80 constantly urges the piston rod 80 radially inward of the axle 101 by a piston rod urging coil spring 83a.
- the constant-pressure holding section 2 of the third embodiment includes a constant-pressure holding chamber 11 and a connection section 13.
- the constant pressure holding chamber 11 is formed by a box-shaped casing 4a.
- the casing 4a is provided with a mounting portion 14 projecting radially outward of the axle 101.
- the mounting portion 14 is formed in a cylindrical shape, and has an air delivery hole 14 a communicating with the constant pressure holding chamber 11 therein.
- a screw portion 14 b is provided on the outer periphery of the mounting portion 14.
- the mounting portion 14 is passed through the mounting hole 10 2 e formed in the hap 10 2 from the inner peripheral side of the hub 102, and the screw of the mounting portion 14 passed through
- the fixed-pressure holding chamber 11 is fixed to the inner peripheral side of the hub 102 by screwing and tightening the fixing nut 14 c to the portion 14 b.
- connection portion 13 is connected to the attachment portion 14 of the constant pressure holding chamber 11.
- the connection portion 13 of this embodiment is configured by a metal connection pipe 13c having a ventilation path 13a through which air passes.
- the connection pipe 13c is provided with a constant-pressure holding chamber connecting portion 15 which is detachably connected to the constant-pressure holding chamber 11 at the lower proximal end side in FIG.
- the constant pressure holding chamber connecting portion 15 includes a packing 15a and an engaging nut 15b. Then, with the packing 15 a disposed between the connection pipe 13 c and the mounting portion 14 of the constant pressure holding chamber 11, the engagement nut 15 b is attached to the screw portion 1 of the mounting portion 14. 4 b is screwed. Thereby, the proximal end side of the connection pipe 13 c is connected to the constant pressure holding chamber 11 so as to be able to ventilate.
- a pneumatic tire connecting portion 16 is provided on the distal end side of the connecting pipe 13c so as to be detachably connected to the pneumatic tire 103.
- the pneumatic tire connection portion 16 has the same configuration as that of the first embodiment shown in FIG.
- the constant pressure holding chamber 11 is provided with a pressure adjusting unit 12 for adjusting the air pressure in the constant pressure holding chamber 11.
- the pressure adjusting section 12 includes an exhaust port 11a and a constant pressure valve 10 that opens and closes the exhaust port 11a.
- the exhaust port 11 a is formed on the right side wall of the constant pressure holding chamber 11 in the drawing so as to penetrate from the constant pressure holding chamber 11 to the outside.
- the constant pressure valve 10 is a constant pressure valve that biases the cylindrical body 12 a, the valve body 12 b slidably disposed in the axial direction of the cylinder 12 a, and the valve body 12 b.
- a constant pressure valve biasing coil spring 12c as a pressure valve biasing member is provided.
- the cylindrical portion 12a is provided with a groove-shaped air vent hole 12h on the inner periphery. This air vent hole 12h is formed along the axial direction from the right end in the drawing to the vicinity of the base end on the left side in the drawing of the cylindrical portion 12a.
- the cylindrical portion 12 a is attached to the side wall of the constant pressure holding chamber 11 having the exhaust port 11 a so as to cover the exhaust port 11 a from outside the constant pressure holding chamber 11.
- the valve element 12b includes a valve element 12d having a rubber packing 12g, and a guide shaft portion 12e extended from the valve element 12d. Then, the valve element 12 b is slidably inserted into the cylindrical part 12 a through the through hole 12 f provided on the tip side of the cylindrical part 12 a. With this arrangement, the valve body 12 d is slidable in the axial direction along the inner wall surface in the cylindrical portion 12 a.
- the constant-pressure valve biasing coil panel 12c is disposed in the cylindrical portion 12a to constantly bias the valve body 12d toward the constant-pressure holding chamber 11 side.
- the valve body 12 d closes the exhaust port 11 a of the constant-pressure holding chamber 11 and shuts off the exhaust port 11 a and the air vent hole 12 h.
- the constant pressure valve 10 is not limited to the arc-shaped one, and may be appropriately changed, for example, by using the ball valve described in the first embodiment.
- the constant pressure holding chamber 11 and the compression chamber 31 are communicated by a communication hole 71.
- the communication hole 71 of the third embodiment is formed by a communication pipe 31c.
- the communication hole 71 is provided with a backflow prevention valve 35 as backflow prevention means for preventing air from flowing back from the constant pressure holding chamber 11 to the compression chamber 31.
- the non-return valve 35 in this embodiment includes a packing 35a, and is axially supported by the communication pipe 31c so that the air inlet 31d can be opened and closed from inside the communication pipe 31c.
- the backflow prevention valve 35 prevents air from flowing back from the constant pressure holding chamber 11 to the compression chamber 31, and the constant pressure holding chamber 1 by the pressure adjusting section 12 as the pressure adjusting means. 1 can keep the air at a constant pressure.
- the check valve 35 is also constantly urged toward the air inlet 31 d by an urging member (not shown).
- the automatic air supply mechanism for a bicycle air tire according to the third embodiment configured as described above has a structure in which the pneumatic tire 103 rotates with respect to the axle 101, and with the rotation, the piston rod 80 rotates. Cam contact part of 3 2. Force As shown in Fig. 8, when sliding from the small diameter part A to the large diameter part B of the cam surface 92a, the sliding part 32a moves to the bottom dead center position A1 force of the compression chamber 31 shown in Fig. 9. Then, slide to the top dead center position B 1 shown in FIG. As a result, the air in the compression chamber 31 is compressed. When the air in the compression chamber 31 is compressed, the check valve 35 is pressed to open the air inlet 31d. Further, the valve body 34b of the suction hole 3la is pressed toward the air intake port 34c to close the air intake port 34c. As a result, the air compressed in the compression chamber 31 is sent from the air inlet 3Id to the constant pressure holding chamber 11.
- the air pressure in the constant pressure holding chamber 11 1 increases as air is sent from the compression chamber 3 1, and the air pressure in the constant pressure holding chamber 11 pushes the valve body 12 b. Press.
- the valve body 12b starts sliding on the cylindrical portion 12a, and the exhaust port 11 a W Open.
- the exhaust port 11a and the air vent hole 12h communicate with each other, and air flows from the exhaust port 11a through the air vent hole 12h to the outside.
- the constant-pressure holding chamber 11 can be adjusted to a constant air pressure at which the force applied to the valve body 12 b by the air pressure and the force applied to the valve body 12 b by the urging force of the urging member 12 c are balanced. .
- the compression ratio in the compression chamber 31 is adjusted, for example, by moving inside the compression chamber 31. This can be achieved by adjusting the amount of movement of the sliding portion 32a of the piston rod 80.
- the amount of movement of the sliding part 32a it is necessary to change the design of the cam surface 92a or to change the design of the volume of the casing 3c. Adjusting the movement of the part 32a is complicated and troublesome. Moreover, subtle adjustments are difficult.
- the air in the constant pressure holding chamber 11 can be maintained at a predetermined air pressure without adjusting the compression ratio in the compression chamber 31, for example.
- the piston rod 80 is pressed against the cam surface 92 a by the urging force of the coil spring 83 a, and the cam contact portion 32 c of the piston rod 80 is moved from the large diameter portion B of the cam surface 92 a. Slide over small diameter section A.
- the sliding portion 32a slides to the bottom dead center position A1 of the compression chamber 31.
- a suction force acts in the compression chamber 31, and the suction force causes the check ring 35 to close the air inlet 31 d.
- the suction valve 34 of the suction hole 31a opens the air intake 34c. As a result, air is sucked into the compression chamber 31 from outside.
- FIG. The fourth embodiment is an automatic air supply mechanism for a pneumatic tire for a vehicle, and is provided on a vehicle wheel 200 of the vehicle.
- the vehicle wheel 200 includes an axle 202, a wheel body 210 rotatable with respect to the axle 202, and an automatic air supply mechanism 300. ing.
- the wheel main body 210 includes a wheel haptic 203 rotatably mounted on an axle 202, a tire wheel 211, and a pneumatic tire 211.
- the wheel hub 203 includes an inner ring 204 and an outer ring 205.
- the inner ring 204 is composed of a right inner ring 204a and a left inner ring 204b.
- the right inner wheel 204a and the left inner wheel 204b are passed through the axle 202 and the axle is screwed to the axle 202 by the stop nut 202a.
- the outer ring 205 of the wheel hub 203 corresponds to the hub 102 in the first embodiment.
- the outer ring 205 has a disk-shaped wheel mounting portion 207 on the outer peripheral side. Then, an inner ring 204 is passed through the inner peripheral side of the outer ring 205, and a steel ball 206-206 which is provided between the outer ring 205 and the inner ring 204 so as to be rollable. It is rotatably attached to the inner ring 204 through the.
- the tire wheel 2 12 is provided with a mounting hole 2 12 a on the inner side for mounting to the outer ring 205 of the wheel hub 203.
- the mounting bolt 2 16 is passed through the mounting hole 2 1 2 a, and the mounting bolt 2 16 is screwed into the screw hole 2 0 5 a provided on the outer ring 205 of the wheel hub 203.
- the tire wheel 2 12 is fixed to the outer wheel 205 of the wheel hap 203.
- this fixation allows the tire wheel 2 12 to rotate around the axle 202.
- the tire wheel 2 12 has an outer peripheral side provided with a tire holding section 2 1 2 c for holding the pneumatic tire 2 1 1.
- the pneumatic tire 2 11 1 is attached to the tire holding section 2 1 2 c of the tire wheel 2 1 2, so that an air holding section 2 1 1 a capable of holding air is formed inside the pneumatic tire 2 1 1. ing. Further, the air holding section 211 a is provided with a valve 213.
- the valve 2 13 is for taking air in and out of the air holding section 2 1 a.
- the cylindrical body 214 has a thread part 214c on the outer periphery.
- the base end of the cylindrical body 2 14 at the upper end in the figure is mounted on a valve mounting hole 2 12 b provided in a tire holding section 2 1 2 c of the tire wheel 2 12, thereby holding air.
- the part 211a is communicated with the outside via the cylindrical body 214.
- an air inlet 2 14 a is provided at the tip of the lower end of the cylindrical body 2 14 in the figure,
- the tire wheel 2 protrudes inward from the radial direction of the wheel 2.
- a valve hole 214b is provided on the inner peripheral side of the cylindrical body 214.
- the valve hole 214b is formed in the inner periphery of the cylindrical body 214 in a groove shape along the axial direction from the base end of the cylindrical body 214 to the vicinity of the air inlet 214a.
- the check ring 2 15 has a shut-off portion 2 15 a for shutting off the valve hole 2 14 b of the cylinder 2 14 and the air inlet 2 14 a. Further, a rubber packing 215b is provided on the outer periphery of the blocking part 215a.
- the check valve 2 15 is disposed on the inner peripheral side of the cylindrical body 214 so as to be slidable in the axial direction, and a coil panel 2 16 provided in the cylindrical body 214. Is always urged to the distal end side. By this bias, the valve hole 214b and the air inlet 214a are shut off.
- the automatic air supply mechanism 300 for a pneumatic vehicle tire according to the fourth embodiment is similar to the automatic air supply mechanism 1 for a bicycle pneumatic tire according to the first to third embodiments, as shown in FIGS.
- an air feeding section 1a for feeding air to the pneumatic tire 103 is provided.
- the air feeding section la includes a constant pressure holding section 2 for holding air at a constant pressure, and a compression section 3 for compressing air and sending the air to the constant pressure holding section 2.
- the constant-pressure holding section 2 includes a constant-pressure holding chamber 11, a pressure adjusting section 12, and a connection section 13 that connects the constant-pressure holding chamber 11 and the pneumatic tire 21 1 in a permeable manner.
- the pressure adjusting section 12 has the same configuration as that of the third embodiment.
- the connecting portion 13 has substantially the same configuration as that of the third embodiment, the pneumatic tire connecting means 16 of the connecting portion 13 in the fourth embodiment is, as shown in FIG. And an engagement nut 310.
- the distal end of the connection part 13 is connected to the air holding tube 103b using the valve stopper nut 106d provided on the air holding tube 103b of a general bicycle. I have.
- the valve 213 of the pneumatic tire 211 of a general automobile used in the fourth embodiment is not provided with the pulp nut 106d.
- the connecting portion 13 is provided with an engaging nut 3 10, and the engaging nut 3 10 is used as the screw portion 2 14 of the cylinder 2 14 of the vehicle wheel.
- the distal end side of the connection portion 13 can be detachably connected to the air holding portion 211a of the pneumatic tire 211.
- the rest of the connecting portion 13 has the same configuration as that of the third embodiment.
- the compression section 3 includes a compression chamber 31 and compression operation means for compressing the air in the compression chamber 31.
- the compression operation means includes a piston rod 80 and a cam 9.
- the piston rod 80 has the same configuration as that of the third embodiment.
- the cam 9 of the fourth embodiment has the same force S as that of the third embodiment, and the cam 9 of the fourth embodiment has an axle 202 as shown in FIG. Through, left inner ring
- the constant-pressure holding chamber 11 of the fourth embodiment and the compression chamber 31 of the compression section 3 are constituted by a single box-shaped casing 3d as shown in FIG.
- the interior of the casing 3 d is partitioned into a constant pressure holding chamber 11 and a compression chamber 31 of the compression unit 3 by the partition wall 301.
- the partition wall 301 communicates with the compression chamber 31 and the constant-pressure holding chamber 11 through a communication hole 30 la for sending air from the compression chamber 31 to the constant-pressure holding chamber 11, and a constant-pressure holding chamber.
- Check valve as backflow prevention means to prevent air from entering compression chamber 3 1 from 1 1
- the check valve 301 b in the fourth embodiment is rotatably attached to a wall surface of the partition wall 301 on the side of the constant pressure holding chamber 11.
- the check valve 310 b receives air pressure from the compression chamber 31, The lower end rotates around the upper end toward the constant pressure holding chamber 11 side, whereby the communication hole 301a is opened, and the compression chamber 31 and the constant pressure holding chamber 11 communicate with each other.
- the check valve 310 b is pressed against the partition wall 301, whereby the communication hole 30 la is closed to hold the constant pressure with the compression chamber 31. Chamber 11 is shut off.
- the check valve 301b is constantly urged toward the partition wall 301 by a coil spring, similarly to the first embodiment.
- the constant-pressure holding section 11 of the constant-pressure holding section 2 and the compression chamber 31 of the compression section are disposed between the inner ring 204 and the outer ring 205 of the wheel hub 203, and the constant-pressure holding section 2
- the mounting portion 14 is fixed to the outer ring 205 via a fixing nut 14c. Therefore, these constant-pressure holding section 2 and compression section 3 rotate together with outer ring 205 with respect to inner ring 204 and axle 202.
- the automatic pneumatic supply system for a pneumatic vehicle tire according to the fourth embodiment configured as described above is configured such that when the vehicle runs and the wheel body 210 rotates with respect to the axle 202, the compression chamber 31 The air is compressed and sent to the constant pressure holding chamber 11.
- the air in the constant-pressure holding chamber 11 is moved from the distal end to the proximal end (the lower side in the figure) by the check valve 2 15 of the valve 2 13 of the pneumatic tire 211. From the upper side).
- the pressing force of the air pressure in the constant-pressure holding chamber 11 that presses the check ring 2 15 causes the pressing of the check ring 2 15 from the base end to the tip end (from the upper side to the lower side in the figure). If it is larger than the sum of the urging force of the member 2 16 and the pressing force due to the air pressure in the pneumatic tire 2 11 1 a, as shown in Fig. 14, the check valve 2 1 5 Slides inside the cylindrical body 214 toward the base end.
- valve hole 2 14 b of the cylinder 2 14 communicates with the air inlet 2 14 a, and the air in the constant pressure holding chamber 11 passes through the valve hole 2 14 b and the pneumatic tire 2 1 1 Enter the air holding section 2 1 1 a. Then, when the air pressure in the air holding portion 211a of the pneumatic tire 211 increases, the urging force of the urging member 216 pressing the check ring 2151 and the urging force of the pneumatic tire 2111 are increased. When the total force with the pressing force due to the air pressure increases, the check ring 2 15 gradually slides toward the distal end with the increase. Then, when the total force is equal to the pressing force due to the air pressure in the constant-pressure holding chamber 11, sliding of the check ring 2 15 stops.
- the air pressure of the air holding tube 103 b is set to a predetermined value by the automatic air supply mechanism 1 and then the connection part 13 is removed, the engagement of the constant pressure holding chamber connection part 15 is performed. Operate the nut 15 b to remove it from the mounting part 14, and operate the engagement nut 3 10 of the pneumatic tire connection part 16 to remove the valve 2 13 force of the pneumatic tire 2 11.
- connection part 13 can be removed.
- the valve 2 13 shuts off the valve hole 2 14 b and the air inlet 2 14 a. Can be prevented from coming out of the air inlet 2 14 a, and can be used in the same way as conventional products.
- the piston rod 8 of the fifth embodiment includes a mouth body 800 having a sliding portion 32a, and a cam contact portion 810 detachably attached to the rod body 800. I have. Further, the cam contact portion 8110 is composed of a plurality of rolling members 8 0... 8 0 1 that are in rolling contact with the cam 9, and a connecting member that connects these rolling members 8 0 1. 802.
- the cam 9 is formed of a plate cam having a circular contour, similarly to the cam of the second embodiment.
- the cam 9 forms a cam surface 901 which is in rolling contact with the rolling members 80.1... 8001.
- the cam 9 of this embodiment is fixed to the axle 101 by cam fixing nuts 45, 45 at a predetermined distance from the rod body 800 to the left side in the axial direction of the axle 101. I have.
- the rolling member is composed of three rollers 800, 801. And these three rollers 8 0 1 ⁇ ⁇ ⁇ 8 0 1 They are connected by material 802.
- This connecting member 802 is composed of a pair of left and right disc-shaped plate members 803a and 803b.
- the plate members 803 a and 803 b are mutually locked by locking pins 804... -80 at a distance from each other.
- the roller 80 1,..., 81 is provided between the plate members 8 0 3 a, 8 0 3 b by the cams 9 in two adjacent rollers 8 0 1, 8 0 1. Rotated via roller shafts 8 0 5... 8 0 5 so that the center angle a from the center O 1 is approximately 120 degrees, and is arranged at substantially equal intervals along the circumferential direction of the cam 9. It is freely supported.
- rollers 800 1 ⁇ 800 1 are in rolling contact with the cam surface 9 0 1 of the cam 9 in the radial direction of the cam 9 so as not to be relatively movable.
- the rollers 800, 801 are formed on both sides of the cam surface 9101 of the cam 9 by flanges 902, 902 projecting from the cam surface 91 to the outer peripheral side. It cannot move in the axial direction of the axle 101 with respect to.
- Each of the roller shafts 800,... 805 passes through the right plate member 8003b and projects rightward, so that a protruding portion extending in the axial direction of the axle 102 is formed. 805a is formed. Then, any one of these roller shafts 800 5 ⁇ 805 (in Fig. 17 and Fig. 18, the upper one) has a protruding portion 800 a force applied to the rod body 800. The shaft is inserted so as to be able to be taken in and out of the provided shaft insertion hole 811. As a result, the cam abutting portion 810 and the rod body 8 are arranged in a state where the force abutment portion 8100 is arranged on the axial side of the axle 102 with respect to the rod body 800. 0 and 0 are detachably connected.
- the piston introduction hole 102 d of the hap 102 through the rod body 800 is formed by moving the rod body 800 in the axial direction of the axle 101. It is formed so as to be movable.
- the cam abutting portion 8100 from the rod body 800, remove the fixation between the hubs 102 and the casings 3a and 3b to which the mouth body 800 is assembled.
- the casings 3a and 3b are moved to the opposite side of the cam 9 along the axial direction of the axle 102, so that the protruding portion 805a of the roller shaft 805 becomes the rod body 80. It can be removed from the 0 shaft fitting hole 8 11 1 to disconnect the two.
- the casings 3a and 3b with the rod body 800 assembled can be operated without disassembling the hap. If the connection between the main body 800 and the cam contact portion 8100 is disconnected, the casings 3a and 3b can be removed from the hub 102, and the casings 3a and 3b can be inspected and repaired. Therefore, maintenance can be performed easily.
- the cam contact portion 8100 on the side of the axle 101 in the axial direction with respect to the rod body 800 as described above, The length can be shortened, and the height of the casings 3a and 3b can be reduced. As a result, the amount of protrusion of the casings 3a and 3b from the hub 102 can be reduced, and the casing can be made compact.
- the number of rollers 800, 801 is not limited to three, and may be two or more, preferably three or more.
- the rollers 8 0 1 8 1 are not limited to those arranged side by side at substantially equal intervals in the circumferential direction, and the rollers 8 0 1 and 8 0 1 What is necessary is just to juxtapose so that relative movement is impossible in the radial direction. More specifically, in the case where three or more rollers 80 1 are formed, three or more rollers 8 ⁇ 1 and 80 1 have a central angle a from the center of the cam 9 at the center of the cam 9 a. Are arranged side by side so as to be less than 180 degrees. When the rollers 80 1 are composed of two rollers, they must be arranged side by side so that the center angle a from the center of the cam 9 between the two rollers 80 1 and 80 1 is 180 degrees. Good.
- the rolling member is not limited to the one composed of the rollers 800,..., 811, but may be composed of, for example, steel balls, and can be changed as appropriate.
- the mouth pad body 800 and the roller shaft 805 are connected.
- the connecting member 8100 is provided with a shaft fitting hole 81 of the mouth head body 800. It is also possible to form a fitting shaft that can be inserted into and removed from the shaft 1, and to fit the fitting shaft into the shaft fitting hole 811 of the rod body 800.
- the automatic air supply mechanism 1 for a pneumatic tire according to the sixth embodiment is similar to the first to third embodiments and the fifth embodiment, and is used by being attached to a bicycle wheel 100. It is intended for.
- the compression operation body of the automatic air supply mechanism 1 for a bicycle pneumatic tire includes a piston rod 980 and a cam 984, as in the first embodiment.
- the biston rod 980 has a sliding portion 32a that slides in the compression chamber 31 and a cam contact portion 981 that contacts the cam 984.
- the cam abutting portion 981 is rotatably supported by the roller shaft 983 and the roller shaft 983, and abuts against a cam surface 984a provided on a cam 9'84 described later. And a roller 982 that rolls.
- the cam 984 has a cam body 984a having a cam surface 984a that abuts the roller 982.
- the shaft support member 986 is formed of a disk-shaped member, and has a shaft fitting hole 986 a into which the roller shaft 983 is fitted.
- the shaft support member 986 is rotatably supported on the side of the cam surface 984a of the cam body 985, and has a shaft fitting hole.
- the roller shaft 983 is fitted in the 986a so that it can be taken in and out.
- the compression chamber 31 in which the sliding portion 32a of the piston rod 980 slides is formed inside a cylindrical casing 931 having a circular cross section.
- a cylindrical casing operating member 932 is attached to the outer periphery of the upper part of the cylindrical casing 931.
- the inner peripheral wall of the casing operating member 932 is provided with a plurality of protrusions 932a that are extended at a predetermined length in the axial direction.
- these projections 932a are arranged over the entire inner circumference of the casing operating member 932.
- These projections 932a are fitted into a plurality of fitting grooves 931a provided on the outer periphery of the upper part of the cylindrical casing 931.
- the casing operation member 932 cannot be rotated with respect to the cylindrical casing 931, and the cylindrical casing 931 is rotated together with the rotation operation of the casing operation member 932. It has become.
- the locking operation member 932 is fixed so as to be pressed down from above by a fixing nut member 933 provided on the upper side of the cylindrical casing 931. As a result, the casing operation member 932 cannot be moved up and down with respect to the cylindrical casing 931.
- the cylindrical casing 931 is supported by a cylindrical casing support member 109.
- the casing support member 109 has a hub mounting portion 109 a and 109 a at the lower portion, and the hub 110 2 is provided with bolts 109 b and 109 b. It is fixed to the outer circumference of. Further, a female screw portion 109 c for supporting the cylindrical casing 931 is provided on the inner peripheral wall of the casing support member 109. The male screw portion 934 provided on the outer periphery of the lower portion of the cylindrical casing 931 is screwed to the female screw portion 109c.
- the cylindrical casing 931 is rotatably supported on the outer peripheral side of the hub 102 via the casing support member 109.
- the compression chamber 31 of the cylindrical casing 931 is substantially orthogonal to the axial direction of the axle 101. Move in the direction and approach the axle 101 'retreat.
- the sliding part 32 a of the biston rod 980 does not move because the piston rod 980 is connected to the cam 984, and the compression chamber 31 does not move. It moves with respect to the sliding part 32.a of the piston rod 980.
- the rotation of the cylindrical casing 931 with respect to the casing support member 109 is regulated by the rotation amount regulating means.
- the rotation amount restricting means includes two projecting pieces 109 f provided on the outer periphery of the casing support member 109 at a predetermined interval in the circumferential direction. 109 f and a contact piece 932 f provided on the inner periphery of the casing operating member 932.
- the contact piece 932f of the casing operating member 932 is disposed between the protruding pieces 109f, 109f.
- the cylindrical casing 931 has a range from the position at which the contact piece 932f contacts the negative protrusion 109f to the position at which the contact piece 932f contacts the other protrusion 109f. It rotates with respect to the casing supporting member 109. In this embodiment, the cylindrical casing 931 is provided so as to rotate approximately 120 degrees with respect to the casing support member 109. W is specified.
- a locking means is provided for locking the cylindrical casing 931 and the casing support member 109 at a plurality of positions so as to be detachable. As shown in FIG. 21 (A), this locking means is provided on a locking member 109 d provided on the outer periphery of the casing support member 109 and on an inner peripheral wall of the casing operating member 932. . 935a... 935a.
- the locking member 109d is made of an elastic panel panel and has a projection 109e.
- the locking member 109 d is accommodated between the two projections 109 f, 109 f provided on the casing support member 109 so as to be immovable in the circumferential direction. Further, in this state, the projection 109 e projects to the outer peripheral side.
- the locking member receiving portions 935a * 935a are composed of a plurality of members formed at equal intervals along the circumferential direction of the casing operating member 932. Each locking member receiving portion 935a is formed in a shape capable of receiving and locking the projection 109e so as to be recessed in the inner peripheral wall.
- the cylindrical casing 931 is urged in a direction approaching the axle 101 by a coil spring 910 as an urging member for the cylindrical casing.
- the coil spring 9110 is housed in a panel housing section 911 formed between the outer peripheral wall of the cylindrical casing 931 and the inner peripheral wall of the casing support member 109, and the casing support member 109
- the cylindrical casing 931 is constantly biased downward in the figure. Due to the urging force of the coil spring 910, the external thread 932 of the cylindrical casing 931 and the internal thread 109c of the casing support member 109 are formed at the time of screw fitting.
- the cylindrical casing 931 is always moved in the direction approaching the lower axle 101 with respect to the casing supporting member 109 by the clearance.
- the automatic air supply mechanism 1 for a pneumatic tire according to the sixth embodiment configured as described above has the sliding portion 3 2 a of the piston rod 980 at the top dead center position B 2 in FIGS. From the state shown in Fig. 0, for example, when the pneumatic tire 103 is rotated with respect to the axle 101 by running a bicycle, the piston 102 and the piston rod 98 are rotated with the rotation.
- the sliding portion 32a of the piston rod 980 moves the compression chamber 31 axially upward along the inner wall surface of the compression chamber 31 as shown in Fig. 22 (A). Sliding from the dead center position B 2 to the bottom dead center position A 2 (indicated by the dotted line in FIG. 22), the roller 982 of the piston rod 980 is moved to the small diameter portion of the cam surface 984a. When it comes to A (shown in Fig. 19 and Fig. 20), the sliding part 32a comes to the bottom dead center position A2. In this state, the compression chamber 31 is in an expanded state with the largest volume L1. Note that the volume of the compression chamber 31 is proportional to the distance from the upper surface of the compression chamber 31 to the sliding portion 32a, so that FIG. 22 (A) and FIG. 22 (B) described later. Here, the size of the volume of the compression chamber 31 is shown as the distance from the upper surface of the compression chamber 31 to the sliding portion 32a for convenience of explanation.
- the roller 982 of the piston rod 980 runs on the cam surface 984a while being pressed by the cam surface 984a. . Then, by the traveling, the sliding portion 3 2 a of the piston rod 980 moves the compression chamber 31 from the bottom dead center position A 2 in the axial direction of the compression chamber 31 along the inner wall surface of the compression chamber 31. The roller 982 of the piston 898 comes to the large diameter portion B of the cam surface 984a (the state shown in Figs. 19 and 20). Then, the sliding portion 32a comes to the top dead center position B2.
- the compression chamber 31 has a stroke volume L 2 corresponding to the movement amount of the moving portion 32 a moved from the bottom dead center position A 2 to the top dead center position B 2 from the volume L 1 in the expanded state. , And becomes the smallest reduced volume L 3.
- the air in the compression chamber 31 has a compression ratio of a value obtained by dividing a volume L1 in an expanded state obtained by adding the stroke volume L2 and a volume L3 in a reduced state by a volume L3 in a reduced state.
- the compression ratio is adjusted.
- the casing operation member 932 is rotated counterclockwise from the state shown in FIG. 21 (A).
- the male screw portion 934 of the cylindrical casing 931 starts to rotate along the female screw portion 109c of the case supporting member 109, and the protrusions 109 of the locking member 109d. 9e is pressed against the wall surface of the locking member receiving portion 935a and is elastically deformed.
- the projection 109 e comes out of the locking member receiving portion 935 a. Then, it enters the next locking member receiving portion 935a adjacent to the locking member receiving portion 935a. Further, when the casing operation member 932 is rotated, the projection 109e further enters the next engagement member receiving portion 935a. As a result, the casing operating member 932 is moved from the casing supporting member 109 to the rotation center 0 of the casing operating member 932 in two adjacent locking member receiving portions 935a and 935a.
- the casing operating member 932 can be rotated and positioned by the central angle P from 4. In this embodiment, it is set so that it can be rotated and positioned by 8 degrees.
- the rotation of the casing operation member 932 with respect to the casing support member 109 can be finely adjusted and accurately adjusted.
- the urging force of the coil spring 910 causes both the screw engagement between the male screw portion 932 of the cylindrical casing 931 and the female screw portion 109c of the casing support member 109. Since the cylindrical casing 931 is always urged against the casing support member 109 by the clearance between the cylindrical casing 931 and the cylindrical casing 931 in accordance with the amount of rotation of the cylindrical casing 931 with respect to the casing support member 109.
- the cylindrical casing 931 can be reliably and accurately moved in the axial direction of the casing support member 109.
- the compression chamber 31 has a capacity L 31 in a contracted state in which the sliding portion 32 a comes to the top dead center position B 2 and the cylindrical casing 93 1 Is larger than the volume L3 in the reduced state before the movement shown in FIG.
- the compression ratio is a value obtained by dividing the expanded volume L11 obtained by adding the stroke volume L2 to the volume L31 in the reduced state by the volume L31 in the reduced state.
- the compression ratio in this case is larger than the compression ratio before the movement shown in FIG. 22 (A).
- the casing operation member 932 is rotated clockwise from the state shown in FIG. As a result, the compression ratio can be increased.
- the automatic air supply mechanism 1 is provided with a pneumatic tire connection device 160 for connecting the connection pipe 13c to the pneumatic tire 103.
- the connection pipe 13c has elasticity similarly to the first embodiment, and has a ventilation path 13a inside.
- the lower side of the connection pipe 13c is connected to the connection pipe 21 attached to the cylindrical casing 931, as shown in FIGS. Further, in this embodiment, after being connected to the connecting pipe 21, the connecting pipe 13 c and the connecting pipe 21 are prevented from coming off by the locking nut 9400.
- connection pipe 21 By being connected to the connection pipe 21 in this manner, the ventilation path 13 a of the connection pipe 13 c is formed into a communication hole 7 1 provided in the cylindrical casing 9 31 1 and a constant pressure holding space section 1 3 b , And a connection pipe 21 connected to the compression chamber 31.
- a pipe connecting portion 161 is provided for detachably connecting to the connecting pipe 13c.
- a pneumatic tire connection device 160 has an upper portion provided with a tire connection portion 180 detachably connected to the pneumatic tire 103. Further, the tire connection portion 180 is provided with a valve mounting portion 162 to which a check ring 17 can be mounted.
- the valve mounting portion 162 of this embodiment is formed of a rod-shaped body having a circular cross section, and is capable of fitting a synthetic rubber-made tube-shaped check valve 170 having elasticity. You. Further, the valve mounting portion 162 is provided with a valve hole 162a opened so as to communicate with a pneumatic tire connection ventilation passage 163, which will be described later, to the outside.
- valve mounting section 162 The lower side of the valve mounting section 162 is detachably attached to the valve mounting base 103c (shown in Fig. 4) provided on the air holding tube 103b of the pneumatic tire 103.
- a mounting nut 16 5 is provided for mounting.
- a tire connection ventilation channel 1 63 is provided inside the pneumatic tire connection device 160.
- the pneumatic tire connection ventilation path 1 63 is connected to the pipe connection 1 61 of the pneumatic tire connection device 160 and the connection pipe. At the time of connection with 13 c, it is connected to the ventilation path 13 a of the connection pipe 13 c to form a part of the ventilation path of the connection part 13 of the automatic air supply mechanism 1.
- an air introduction hole 164 is provided between the pipe connection portion 161 and the valve mounting portion 162 in the pneumatic tire connection device 160.
- the air introduction hole 164 is for supplying air to the pneumatic tire 103 from outside by an air pump or the like.
- the air introduction hole 164 is formed so as to communicate from the pneumatic tire connection ventilation path 163 to the outside.
- the air introduction hole 164 is provided with an air inlet 164a closed with a removable cap 164b.
- This backflow prevention device for air introduction hole 16 6 is composed of a ball 16 6 a movably disposed inside the air introduction hole 16 4, and a coil spring 16 6 b energizing the ball 16 6 a.
- the coil spring 1 66 b always urges the ball 1 66 a to the air inlet 1 64 a side, and the ball 1 6 6 c into the ball receiving section 1 66 c provided in the air inlet 1 64. a is being pressed. As a result, in the normal state, the air introduction holes 164 are shut off. Further, the pneumatic tire connecting device 160 of this embodiment is provided with an air pressure checking device 190 as an air pressure checking means for checking the air pressure in the pneumatic tire connecting air passage 163.
- the air pressure inspection device 190 of this embodiment includes an air pressure receiving portion (not shown) that receives air pressure in the air passage 163 for connecting the pneumatic tire, and a display piece that moves when the air pressure receiving portion receives a pressure equal to or higher than a predetermined pressure. 1 9 2 and a window hole 19 1 for viewing the display piece 19 2 from the outside.
- the display piece 192 is a low-pressure display part 193 for indicating that the air pressure in the pneumatic tire connection ventilation path 1663 is below a certain value when it is below a certain value, and the pneumatic tire connection ventilation.
- a high-pressure display section 194 is provided in the road 163 to indicate that the air pressure has exceeded a certain value when the air pressure has exceeded a certain value.
- the low voltage display section 1993 and the high voltage display section 1994 are colored with different colors from each other.
- the pneumatic pressure inspection device 190 formed as described above is attached to the pneumatic tire connection device 160 so that the pneumatic receiving portion enters the pneumatic tire connection ventilation passage 163. Have been killed. For example, when there is no air pressure in the pneumatic tire connection ventilation passage 16 3, the low pressure display section 19 3 matches the window hole 19 1, and the low pressure display section 1
- the air pressure receiving portion of the pneumatic tire connection device 160 receives the air pressure and the high pressure display portion 1 9 4 of the display piece 19 2 Appears in the window hole 19 1.
- the air compressed at a predetermined compression ratio in the compression chamber 31 of the automatic air supply mechanism 1 is supplied to the pneumatic tire. It can be seen that the air is being sent to the connection ventilation channel 1 63, and it can be checked that the automatic air supply mechanism 1 is functioning properly.
- Air can be pumped into 103 b.
- the cap 164b is removed and air is supplied from the air inlet 164a.
- the ball 1666a of the valve 1666 for the air introduction hole moves to the side of the pneumatic tire connection ventilation passage 1663, and the air introduction hole 1664 is opened, so that air is supplied to the pneumatic tire connection. Go into ventilation channel 1 6 3.
- the air that enters the pneumatic tire connection ventilation path 16 3 also enters the ventilation pipe 13 a side of the connection pipe 13 c, but the compression chamber 31 side is shut off by the ball 41 as shown in Figure 19
- open the check valve 1 70 that blocks the valve hole 16 2 a from the ventilation path 1 6 3 through the air passage 16 3 and open the air holding tube 1 0 3 b of the pneumatic tire 10 3 Can be sent.
- the automatic air supply mechanism 1 is provided with the pneumatic tire connection device 160 in the sixth embodiment, the present invention is not limited to this embodiment.
- the tire connection device 160 shall not be provided, and the pneumatic tire connection device 160 shall be implemented as a device for the automatic air supply mechanism 1 that connects the automatic air supply mechanism 1 and the pneumatic tire 103.
- the pipe connection section 16 1 It functions as an automatic supply mechanism connection part that connects to
- the automatic air supply mechanism 1 is provided with the pneumatic tire connection device 160 as in the above embodiment, the automatic air supply mechanism 1 and the pneumatic tire connection device 160 are detachably connected. It is also good, but it is also good to leave them unremovably connected.
- the pneumatic tire connection device 160 is not limited to the above-mentioned configuration, and for example, as shown in FIG. 24, may be provided with plate-like projections 195 and 195 that protrude on the outer periphery.
- the overhanging portions 1 95 and 1 95 may be provided with reflectors 19 6 and 19 6 that can reflect the received light. By doing so, it is not necessary to separately attach a separate reflector formed separately to the spokes 104 (shown in FIG. 1) of the bicycle wheel as in the prior art, and it is possible to make the bicycle convenient to use.
- the overhanging portions 195 and 195 having the reflectors 19 and 19 may be formed separately from the pneumatic tire connecting device 16 and attached to the pneumatic tire connecting device 16.
- the overhang portion 1 95, with the reflectors 19 6 and 19 6 195 can also be integrally molded. In this way, when forming the pneumatic tire connection device 160, the overhanging portions 195, 1 having the reflectors 1996, 196 are formed.
- the reflectors 196 and 196 can be manufactured at low cost, and separate assembly work is not required.
- the air introduction hole 164 may be provided in either the automatic air supply mechanism 1 or the pneumatic tire connection device 160.
- the air introduction hole 164 may be provided so as to communicate from the outside with the air passage 13 a of the connection pipe 13 c of the automatic air supply mechanism 1.
- the air pressure check device 190 may not be provided in the pneumatic tire connection device 160, and may be provided in the automatic air supply mechanism 1.
- the air pressure checking device 190 is connected to the constant pressure holding space 13b, the connection pipe 21 and the connection pipe 13c that form the connection section 13 in the automatic air supply mechanism 1.
- it may be provided in any of the pneumatic tire connection devices 160 in the case where the pneumatic tire connection device 160 is provided in the automatic air supply mechanism 1, and may be changed as appropriate.
- the air pressure inspection device 190 is not limited to the embodiment described above, and may be, for example, a device that measures air pressure and displays a numerical value.
- a cylindrical casing 931 having a compression chamber 31 movably attached to the hap 102 is moved from the outer peripheral side of the hub 102 to compress the compression chamber 3. It is performed by adjusting the position of the sliding portion 3 2 a with respect to 1.
- the present invention is not limited to this configuration. By expanding or contracting the length of 980, or by adjusting the amount of eccentricity between the axis ⁇ 2 of the axle 101 and the center O1 of the cam surface 92a of the cam 984. By adjusting the amount of eccentricity, the position of the sliding portion 32 a with respect to the compression chamber 31 in the axial direction of the compression chamber 31 may be adjusted.
- the cylindrical casing 931 must be removed from the hub 102 by loosening the bolts 109b and 109b, and it takes time to adjust the movement amount of the compression chamber. You need therefore, as in the sixth embodiment, the cylindrical casing 931 is connected to the hub.
- the air of the present invention can be applied to the wheels without having to remove the cylindrical casing 931 from the hub 102. This is preferable because it can be performed with the automatic supply mechanism 1 assembled, and can be easily operated.
- a female screw portion 109c of the casing support member 109 and a male screw portion 9 of the cylindrical casing 931 are provided.
- the cylindrical casing 931 may be slidably attached to the hub 102 in a direction perpendicular to the axial direction of the axle 101.
- Other configurations of the sixth embodiment have the same configurations as those of the first embodiment. The above is the description of the sixth embodiment.
- the air compression operation means includes the piston rods 8, 80, 980 as compression operation bodies for compressing the air in the compression chamber 31 and the cams 9, 984.
- a stretchable portion 30 is formed as a compression operation body on the entire or a part of the peripheral wall of the compression chamber 31 in the axial direction.
- a cam contact portion 32a is formed on the radially inner end face of the axle in the compression chamber 31.
- the compression ratio adjusting means may be configured to be able to adjust, for example, the amount of expansion and contraction of the expansion and contraction portion 30.
- the pressing portion is constituted by the cam 9 having the cam surface 92a on the entire circumference, but for example, a projecting portion projecting radially to the axles 101, 202 is formed.
- the cam contact portion may be pressed against the protruding portion.
- the piston rods 8, 80 are attached to the cams 9 having the cam surfaces 92a as the pressing portions when the hubs 102, 203 rotate. 2 is pressed and moved in the radial direction.
- the piston rods 8 and 80 are moved by pressing them in the axial direction of the axles 101 and 202 when the hubs 102 and 203 rotate.
- the air in the compression chamber 31 may be compressed, and may be changed as appropriate.
- a rotary compressor can be used as the compression unit 3 and can be appropriately changed.
- the suction hole 31 a of the compression chamber 31 is provided near the bottom dead center position A 1 of the sliding portion 32 a in the compression chamber 31.
- the check valve is not provided, for example, the suction hole 31a is provided near the top dead center position B1 of the sliding part 32a in the compression chamber 31 and the check valve is provided. It is good.
- the suction hole 31 a of the compression chamber 31 is provided near the top dead center position B 1 of the sliding portion 32 a in the compression chamber 31 to prevent backflow.
- valve element 34b as a valve is provided, for example, a suction hole 31a is provided near the bottom dead center position A1 of the sliding part 32a in the compression chamber 31 and a check valve is provided. It can be carried out without the provision, and can be changed as appropriate.
- valves 106, 213 provided in the general pneumatic tires 103, 211 are used, and the valves 106, 213 are used as the pneumatic tires 1 0 3 and 2 1 1 function as backflow prevention means to prevent air from flowing back to the compression section 3, for example, a valve as a backflow prevention means at the pneumatic tire connection section 16 of the connection section 13 May be provided.
- the communication holes 31a, 301a may be provided with backflow preventing means, It can be carried out without any means for preventing backflow.
- the air supply unit and the pneumatic tire are provided with a connection portion 13 which is connected in a permeable manner, and the connection portion is detachably connected to the air supply portion and the pneumatic tire, respectively.
- the connection portion is detachably connected to the air supply portion and the pneumatic tire, respectively.
- each member can be replaced individually, etc., making it convenient to use.
- the connection is not limited to this, and the connection may be made so that it cannot be removed.
- the positions where the constant pressure holding section 2 and the compression section 3 are provided are located on the wheel bodies 110 and 210. If it is a part, it is good. For example, when used on the wheels of the bicycle of the first to third embodiments, it can be provided on the rim 105. Further, when used for the wheels of the automobile of the fourth embodiment, it may be provided on the outer peripheral side of the outer ring 205 or on the tire wheel 212.
- the cam 9 having a circular contour is employed, and while the piston rods 8, 80 rotate with respect to the cam 9, the sliding portions 3 of the piston rods 8, 80 are rotated. 2a Force to make one reciprocation of the compression chamber 31 from the bottom dead center position A1 to the top dead center position B1
- the piston is not limited to this form.
- the sliding portions 32a of the piston rods 8, 80 move the compression chamber 31 from the bottom dead center position A1 to the top dead center position B1, for example.
- the automatic air supply mechanism for a pneumatic tire of the present invention is not limited to the pneumatic tire of a bicycle wheel and is used for a tire of an automobile wheel, but is provided on a wheel body rotatable with respect to an axle.
- it is mounted on a pneumatic tire of a wheel of a unicycle, a pneumatic tire of a wheel for a motorcycle such as a motorcycle or a rear car, a tricycle, a four-wheeled vehicle, or a box body of an elevator to be able to run on a wall surface. It can be used for pneumatic tires of elevator wheels.
- the components of the above-described first to sixth embodiments can be appropriately selected and combined.
- one or more of the air tire connection device 160 having the air introduction hole 164 of the sixth embodiment, the air pressure inspection device 190, and the compression ratio adjusting means may be provided. .
- An automatic air supply mechanism for a pneumatic tire is an automatic air supply mechanism for an air tire that automatically supplies air to a pneumatic tire provided on a wheel body rotatable with respect to an axle.
- a vacant feed portion which is connected to be able to ventilate and sends air to the pneumatic tire, is provided on the wheel, and the air feed portion has a compression portion capable of compressing air when the wheel body rotates with respect to the axle.
- the compressor compresses air. : It can send compressed and compressed air to pneumatic tires.
- the automatic air supply mechanism of the present invention is provided with a compression ratio adjusting means capable of adjusting the compression ratio of air when compressing air in the compression section.
- an appropriate air pressure according to the type of the pneumatic tire can be sent to the pneumatic tire.
- the air pressure can be adjusted to an appropriate level according to the type of general bicycle, racing bicycle, or mountain bike, or according to the weight of the cyclist, or according to the front and rear wheels of the bicycle.
- the air pressure can be adjusted to an appropriate value according to the type of pneumatic tire of various motorcycles and automobiles.
- the automatic air supply mechanism of the present invention is provided with a constant-pressure holding unit connected to the air feeding unit so as to be permeable to the compression unit, and connected to the pneumatic tire so as to be permeable. Between them, there is provided a backflow prevention means for preventing air from flowing back from the constant pressure holding section to the compression section.
- the air can be sent to the constant pressure holding section a plurality of times and the constant pressure holding section can be maintained at a constant air pressure. This makes it possible to easily compress the air at an appropriate compression ratio in the compression section and hold the compressed air in the constant-pressure holding section.
- the compression section of the automatic air supply mechanism of the present invention includes a compression chamber that can take in air from the outside, and a pressure that compresses air in the compression chamber when the vehicle body rotates with respect to the axle. Compression operation means.
- the air in the compression chamber can be easily compressed by the compression operation means when the vehicle body rotates with respect to the axle, and the operation means can be manufactured easily and at low cost.
- the compression section of the automatic air supply mechanism of the present invention controls the air in the compression chamber so that the air in the compression chamber flows into the air tire from the compression chamber and the air pressure of the pneumatic tire becomes an air pressure suitable for the pneumatic tire. Compression at a compression ratio of
- the compression operation means of the automatic air supply mechanism of the present invention includes a pressing portion provided on the axle, and a compression operation body for compressing air in the compression chamber, and when the wheel body rotates with respect to the axle, the compression operation body is The air in the compression chamber is compressed by being pressed against the pressing portion.
- the automatic air supply mechanism of the present invention is provided with a connecting portion that connects the compressing portion and the pneumatic tire in a permeable manner, and the constant-pressure holding portion includes a connecting portion.
- the automatic air supply mechanism of the present invention is provided with a connecting portion that connects the compression section and the pneumatic tire in a permeable manner, the connection section includes a ventilation path for passing air from the compression section to the pneumatic tire, and a ventilation path.
- Air pressure checking means shall be provided to check the air pressure in the interior.
- the air pressure in the air passage can be checked by the air pressure checking means.
- the air passage is formed. Check immediately if the air pressure is not at the specified level can do. Therefore, if a problem occurs, it can be dealt with promptly.
- the automatic air supply mechanism of the present invention is provided with a connection portion that connects the compression portion and the pneumatic tire in a permeable manner.
- connection portion has a ventilation path for passing air from the compression portion to the pneumatic tire, An air introduction hole communicating with the air passage is provided, and the air introduction hole is provided with an air introduction hole backflow prevention means for preventing backflow of air from the air passage to the outside. It is assumed that the air can be introduced into the pneumatic tire separately from the air sending section via the pneumatic tire.
- connection portion connecting the compression portion and the air tire so as to be able to ventilate is provided with the air introduction hole having the backflow prevention means for the air introduction hole for preventing the backflow of air from the ventilation passage to the outside. Therefore, air can be introduced into the pneumatic tire through the air introduction hole and the ventilation path separately from the air feeding section.
- air can be supplied to the pneumatic tire using, for example, a pump for inflation. Therefore, for example, when it is necessary to inject a large amount of air at a time into a pneumatic tire, the air pressure suitable for the pneumatic tire can be obtained by using an inflation pump or the like.
- the air feeding section includes pressure adjusting means for adjusting the air pressure of the air compressed by the compression section.
- the air pressure of the air compressed by the compression section is adjusted to the air pressure suitable for the pneumatic tire by the pressure adjusting means, even if the air pressure is not compressed to the air pressure of the pneumatic tire in the compression section.
- the conditioned air can be sent to the pneumatic tire.
- the compression chamber of the automatic air supply mechanism of the present invention is fixed to a hub provided on a wheel body for a motorcycle, and the pressing portion is fixed to an axle for a motorcycle.
- the air in the compression chamber is compressed by being pressed against the pressing portion.
- a hub for a motorcycle wheel is usually provided with spokes on both left and right sides and a ball pusher. And no other members are in the meantime. Therefore, the compression chamber of the automatic air supply mechanism can be easily attached without any other members being in the way. Moreover, for example, when the compression chamber is attached to the hub, the connection for connecting the compression chamber and the pneumatic tire can be arranged between the spokes, so that the connection can be protected by the spokes even if the wheel falls down. However, it is possible to reduce the possibility of causing troubles on other objects.
- Wheels for motorcycles are removed from the vehicle body with the hub, spokes, rims, and pneumatic tires attached to the axle. Therefore, once the automatic air supply mechanism is assembled to the wheel, even if the wheel is removed from the vehicle body, it can be removed without disassembling the assembled automatic air supply mechanism, which is the same as the conventional wheel for motorcycles. Can be used in any form. Therefore, it can be made particularly suitable for motorcycles such as bicycles and motorcycles.
- the automatic air supply mechanism of the present invention is provided with compression ratio adjusting means capable of adjusting the compression ratio of air when compressing air in the compression section, and the compression operation body is provided on the pressing section when the vehicle body rotates with respect to the axle.
- compression ratio adjusting means capable of adjusting the compression ratio of air when compressing air in the compression section
- the compression operation body is provided on the pressing section when the vehicle body rotates with respect to the axle.
- the volume of the compression chamber in the expanded state and the volume of the compression chamber in the contracted state can be adjusted by adjusting the amount by which the compression operation body is pressed and moved by the pressing part when the vehicle body rotates with respect to the axle. it can. This makes it easy to adjust the compression ratio.
- the automatic air supply mechanism of the present invention is provided with compression ratio adjusting means capable of adjusting the compression ratio of air when compressing air in the compression section, and the pressing section is constituted by a cam fixed to an axle for a motorcycle.
- the compression operating body includes a sliding portion that slides in the compression chamber and a cam contact portion that contacts the cam, and the cam contact portion follows the cam when the vehicle body rotates with respect to the axle.
- the sliding portion slides in the axial direction of the compression chamber in a range from a bottom dead center position where the compression chamber is expanded to a top dead center position where the compression chamber is reduced, and the compression chamber is used for a motorcycle. Attached to the outer peripheral side of the hub provided on the wheel body so that it can be moved and operated from the outer peripheral side of the hub.
- the compression ratio adjusting means is capable of changing the bottom dead center position and the top dead center position of the sliding portion of the compression operation body with respect to the compression chamber by moving the compression chamber. By changing the ratio, the ratio of the expanded volume to the reduced volume of the compression chamber shall be adjusted.
- the compression chamber can be moved from the outer peripheral side of the hap in an assembled state without disassembly or the like.
- the bottom dead center position and the top dead center position of the sliding portion of the compression operation body with respect to the compression chamber can be changed, and the ratio of the volume of the compression chamber in the expanded state to the volume in the contracted state is reduced. Can be adjusted. Therefore, the compression ratio can be easily adjusted.
- the automatic air supply mechanism according to the present invention is provided with locking means for locking the compression chamber to the hub at a plurality of places so as to be detachable, and the locking means slides the compression operating body relative to the compression chamber. It is assumed that the bottom dead center position and top dead center position can be changed while positioning at multiple locations.
- the pressing portion of the automatic air supply mechanism of the present invention is constituted by a circular cam
- the compression operation body includes a sliding portion that slides in the compression chamber and a cam contact portion that contacts the cam.
- the part follows the cam when the body rotates with respect to the axle, so that the sliding part slides in the compression chamber to compress the air in the compression chamber, and the cam contact part rolls with respect to the cam.
- a plurality of rolling members that come into contact with each other, and a connecting member that connects the plurality of rolling members, wherein the rolling members are arranged such that each rolling member cannot move relative to the cam in the radial direction of the cam. Are arranged side by side along the circumferential direction.
- the cam contact portion can always be in contact with the cam when the compression operation body rotates with respect to the cam, and can form a positive cam that does not separate from the cam. This eliminates the need for a panel or the like for keeping the cam contact portion pressed against the cam so that the cam contact portion does not separate from the cam.
- the pneumatic tire connection device of the present invention is a pneumatic tire connection device that connects a pneumatic tire automatic air supply mechanism for automatically supplying air to a pneumatic tire provided on a wheel body rotatable with respect to an axle to the pneumatic tire.
- the air passage is provided with an air introduction hole which is communicated from the outside to the air tire connection air passage.
- the air tire connection air passage is connected to the automatic supply mechanism connection part and the automatic air supply mechanism when the air is supplied.
- valve hole that is opened so that it can communicate from the airway to the outside, and has a valve mounting part that can be fitted with a check valve to prevent backflow of air from the pneumatic tire to the pneumatic tire connection ventilation path.
- the check valve is mounted on the valve mounting part, the valve hole is closed by the check valve, and when the tire connection part is connected to the pneumatic tire, the air passage from the pneumatic tire to the pneumatic tire connection is provided. The backflow of air to the pneumatic tire is prevented, and the air is sent from the pneumatic tire connection air passage to the valve hole, so that the valve hole is opened and air can enter the pneumatic tire from the pneumatic tire connection air passage.
- the air introduction hole is provided with a backflow prevention means for the air introduction hole for preventing the air from flowing to the outside from the pneumatic tire connection ventilation path.
- This makes it possible to easily connect the automatic air supply mechanism to the pneumatic tire.
- This makes it possible to connect the automatic air supply mechanism to the pneumatic tire.
- a check valve is installed in the valve mounting part, the valve hole provided in the valve mounting part will be closed by the check valve. In this state, if the tire connection portion is connected to the pneumatic tire, the backflow of air from the pneumatic tire to the pneumatic tire connection ventilation path can be prevented, and the air is sent from the pneumatic tire connection ventilation path to the valve hole. If a valve hole is opened, air can enter the pneumatic tire from the pneumatic tire connection ventilation path. Therefore, it is possible to mount a check valve on the valve mounting part and connect the tire connection part to the pneumatic tire.This eliminates the need for the check valve provided in general pneumatic tires and also allows connection. Easy to operate.
- the automatic air supply mechanism is provided via the air introduction hole and the air passage for connecting the pneumatic tire. Apart from this, air can be introduced into the pneumatic tire by an air pump or the like.
- the wheel can be provided with a reflector. Therefore, it is not necessary to attach a specially manufactured reflector to the spokes of the wheel as in the prior art, so that the reflector can be used conveniently. Also, when manufacturing the pneumatic tire connection device, it is possible to integrally manufacture the reflector, and by integrally manufacturing, the reflector can be manufactured easily and at low cost.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Tires In General (AREA)
- Check Valves (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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KR10-2004-7012127A KR20040088056A (ko) | 2002-02-05 | 2002-04-26 | 공기 타이어의 공기 자동 공급 기구 및 공기 타이어 접속장치 |
CA002475334A CA2475334A1 (en) | 2002-02-05 | 2002-04-26 | Automatic air feeding mechanism for pneumatic tires, and pneumatic tire connecting device |
AU2002253656A AU2002253656A1 (en) | 2002-02-05 | 2002-04-26 | Automatic air feeding mechanism for pneumatic tires, and pneumatic tire connecting device |
EP02722885A EP1473177A4 (en) | 2002-02-05 | 2002-04-26 | AUTOMATIC AIR-FEEDING MECHANISM FOR AIR TIRES AND AIR TIRE CONNECTION DEVICE |
JP2003523884A JP3860171B2 (ja) | 2002-02-05 | 2002-04-26 | 空気タイヤの空気自動供給機構 |
US10/495,378 US7124789B2 (en) | 2002-02-05 | 2002-04-26 | Automatic air feeding mechanism for pneumatic tires, and pneumatic tire connecting device |
TW092102041A TWI292747B (en) | 2002-02-05 | 2003-01-29 | Automatic air supply device for airtire and airtire conneting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002027799 | 2002-02-05 | ||
JP2002-27799 | 2002-02-05 |
Publications (1)
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WO2003066354A1 true WO2003066354A1 (fr) | 2003-08-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/004301 WO2003066354A1 (fr) | 2002-02-05 | 2002-04-26 | Mecanisme d'apport automatique d'air pour pneumatiques, et dispositif de connexion a un pneumatique |
Country Status (9)
Country | Link |
---|---|
US (1) | US7124789B2 (ja) |
EP (1) | EP1473177A4 (ja) |
JP (1) | JP3860171B2 (ja) |
KR (1) | KR20040088056A (ja) |
CN (1) | CN1325292C (ja) |
AU (1) | AU2002253656A1 (ja) |
CA (1) | CA2475334A1 (ja) |
TW (1) | TWI292747B (ja) |
WO (1) | WO2003066354A1 (ja) |
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- 2002-04-26 CN CNB028278119A patent/CN1325292C/zh not_active Expired - Fee Related
- 2002-04-26 KR KR10-2004-7012127A patent/KR20040088056A/ko not_active Application Discontinuation
- 2002-04-26 WO PCT/JP2002/004301 patent/WO2003066354A1/ja not_active Application Discontinuation
- 2002-04-26 US US10/495,378 patent/US7124789B2/en not_active Expired - Fee Related
- 2002-04-26 JP JP2003523884A patent/JP3860171B2/ja not_active Expired - Fee Related
- 2002-04-26 EP EP02722885A patent/EP1473177A4/en not_active Withdrawn
- 2002-04-26 AU AU2002253656A patent/AU2002253656A1/en not_active Abandoned
- 2002-04-26 CA CA002475334A patent/CA2475334A1/en not_active Abandoned
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2003
- 2003-01-29 TW TW092102041A patent/TWI292747B/zh not_active IP Right Cessation
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7117910B2 (en) | 2002-05-27 | 2006-10-10 | Seiko Epson Corporation | Air supply device, wheel, and tire unit |
JP2008519735A (ja) * | 2004-11-12 | 2008-06-12 | ロエベ、リチャード | タイヤ圧維持装置 |
WO2006054736A1 (ja) * | 2004-11-18 | 2006-05-26 | Souhei Takashima | ホイールイン式回転補助空圧装置 |
JP2007001482A (ja) * | 2005-06-24 | 2007-01-11 | Toyota Motor Corp | 圧力生成装置 |
JP4529815B2 (ja) * | 2005-06-24 | 2010-08-25 | トヨタ自動車株式会社 | 圧力生成装置 |
JP2007176356A (ja) * | 2005-12-28 | 2007-07-12 | Toyota Motor Corp | 空気供給装置 |
WO2007077755A1 (ja) * | 2005-12-28 | 2007-07-12 | Toyota Jidosha Kabushiki Kaisha | 空気供給装置 |
AU2006333845B2 (en) * | 2005-12-28 | 2009-12-10 | Toyota Jidosha Kabushiki Kaisha | Air supply apparatus |
KR100972326B1 (ko) | 2005-12-28 | 2010-07-26 | 도요타 지도샤(주) | 공기 공급 장치 |
JP4529899B2 (ja) * | 2005-12-28 | 2010-08-25 | トヨタ自動車株式会社 | 空気供給装置 |
US8052400B2 (en) | 2005-12-28 | 2011-11-08 | Toyota Jidosha Kabushiki Kaisha | Air supply apparatus |
Also Published As
Publication number | Publication date |
---|---|
TWI292747B (en) | 2008-01-21 |
JPWO2003066354A1 (ja) | 2005-05-26 |
EP1473177A1 (en) | 2004-11-03 |
EP1473177A4 (en) | 2006-05-17 |
JP3860171B2 (ja) | 2006-12-20 |
AU2002253656A1 (en) | 2003-09-02 |
CN1325292C (zh) | 2007-07-11 |
CN1617809A (zh) | 2005-05-18 |
TW200302786A (en) | 2003-08-16 |
US7124789B2 (en) | 2006-10-24 |
KR20040088056A (ko) | 2004-10-15 |
CA2475334A1 (en) | 2003-08-14 |
US20050000587A1 (en) | 2005-01-06 |
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