JP2011000940A - Tire inflator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of being troublesome work, due to requiring to periodically replenish air, since air of a tire naturally deflates.SOLUTION: A piston (2), an air supply pipe (6), an intake valve (9), a safety valve (10) and a cover (13) are arranged in a cylinder (1). A support shaft (12) is arranged on the piston (2), and a pusher (3) is arranged on the support shaft (12), and a weight (4) is arranged in the pusher (3). A spring (5) is arranged between the cover (13) and the pusher (3). The cylinder (1) can be fixed in the radial direction of a wheel, and the air supply pipe (6) is connected to an air supply port of the tire. The tire inflator is provided wherein when the tire rotates, the weight (4) pushes in the piston (2) by centrifugal force, and supplies air to the tire, and when rotation stops, the spring (5) extends, and pushes back the piston (2), and supplies the air in the cylinder.

Description

  The present invention relates to inflating using centrifugal force generated by rotation of a tire.

  Since tire air naturally escapes, it is necessary to replenish air regularly. The cause of air escape is often due to the deterioration of insect rubber, and tires that do not use insect rubber have also been developed, but the current situation is that it cannot be prevented from coming out completely.

  There has been invented an automatic air filling device for a tire that is attached to a wheel and drives a pump by the rotational force of the wheel, as disclosed in JP-A-2005-231573.

JP 2005-231573 A

  Since the tire air naturally escapes, it is necessary to perform a troublesome work of replenishing the air with a manual pump-type air inflator or an air inflator equipped with a power compressor. The automatic tire filling apparatus disclosed in Japanese Patent Application Laid-Open No. 2005-231573 solves the above problem, but the problem remains that the structure is complicated. The present invention has been made to solve the above-described problems with tires using air pressure that are installed in various devices such as bicycles, motorcycles, and automobiles.

  An air chamber with a variable volume is attached to the wheel on which the tire is installed, and the air chamber is directly connected to the air chamber, on the intake valve, the air supply pipe, and the flow line causing the volume change of the air chamber, or A weight is provided so as to contact indirectly, and a means for biasing in a direction of expanding the volume of the air chamber is provided. The air chamber is fixed to the wheel so that the flow line causing the volume change of the air chamber is approximately in the radial direction of the wheel. When the wheel rotates, centrifugal force acts on the weight, and when the wheel reaches a certain speed, the volume of the air chamber is compressed and air is supplied to the tire. Centrifugal force weakens as wheel rotation slows down, and the volume of the air chamber is expanded by means of restoring the volume of the air chamber to the state before compression, providing an air chamber in which air is supplied to the air chamber from the intake valve To do.

Examples of air chambers with variable volumes include:
(B) Combination of cylinder and piston (b) A bellows-type or lantern-type object with a bellows-type curtain affixed to the plate (c) A hollow curtain (ii) A hollow elastic body

Examples of means for restoring the volume of the air chamber to the state before compression are as follows.
(B) Means for providing an elastic body such as a spring inside or outside the air chamber to give a restoring force to the compressive force (b) Means for giving the bellows structure part elasticity and giving the restoring force to the compressive force (c) Means by the restoring force of the hollow elastic body itself (d) A flow line that allows the volume of the air chamber to change so that gravity is applied to the weight in the direction of temporarily expanding the volume of the air chamber by rotation of the wheel at all times. Means to place

  Since the air is automatically supplied every time the tire repeats rotation and stop, troublesome air replenishment work becomes unnecessary. Also, by providing a safety valve that opens when the tire air pressure exceeds a certain level, the tire air pressure can be automatically kept constant, and the maintenance work of the tire can be simplified.

Cross-sectional view of the main body of the air chamber, which has an air chamber composed of a cylinder and a piston, a pusher on the piston, a weight placed on the pusher, and a spring outside the cylinder A sectional view of the main body of the air chamber, in which an air chamber is formed by the cylinder and piston, the weight is placed directly on the piston, a pusher is provided on the piston, and a spring is provided outside the cylinder. Cross-sectional view of the main body with an air chamber composed of a cylinder and piston, a weight placed directly on the piston, and a spring inside the cylinder The perspective view which shows the decomposition | disassembly structure of the piston part valve using an O-ring Cross section of the main body of the air chamber in which the air chamber is composed of the cylinder and piston, and the weight is placed directly on the piston. Cross-sectional view of the main body of the air chamber in which a bellows structure curtain forms a bellows-type air chamber and a spring is placed in the air chamber FIG. 6 is a perspective view. Cross-sectional view of a main body with a bellows structure curtain forming a bellows-type air chamber and an elastic plate on the bellows A cross-sectional view of a main body with a lantern-shaped air chamber composed of a bellows-shaped curtain and a spring in the air chamber FIG. 9 is a perspective view. A cross-sectional view of the main body of the air lantern with a bellows structure curtain and a spring placed outside the air chamber Sectional view of the air main body in which the air chamber is constituted by a hollow elastic body FIG. 12 is a perspective view. Cross-sectional view of the air main body in which the air chamber is constituted by a hollow elastic body and a spring is arranged outside the air chamber Sectional view of a fixture of the type that is fixed to the spokes of the wheel FIG. 15 is a sectional view of the fixture shown in FIG. 15 is a cross-sectional view of the fixing tool shown in FIG. FIG. 16 is a perspective view. FIG. 18 is a perspective view in which the weight for correcting the center of gravity is attached to the wheel. 3 is a cross-sectional view of the inflator body shown in FIG. 3 installed on a fixture that is fixed to the axle. 20 is a perspective view. Side view of Fig. 20 fixed to the wheel 3 is a cross-sectional view in which the main body of FIG. 3 is installed on a fixture incorporated in a wheel. The perspective view which installed the fixture of FIG. 23 in the wheel, and installed the air main body of FIG. FIG. 24 and a side view of the entire wheel equipped with a weight for correcting the center of gravity FIG. 6 is a perspective view of a fixture for fixing FIG. 6 to a wheel. FIG. 6 is a side view of FIG.

  An example of the structure of the air main body will be described.

    In FIG. 1, a piston (2), a lid (13), an air supply pipe (6), an intake valve (9), and a safety valve (10) are arranged in a cylinder (1). (3) is connected by a support shaft (12), a weight (4) is disposed on a piston pusher (3), and a spring (5) is placed between the piston pusher (3) and the lid (13). This is a pneumatic main body in which a drag acts in the direction in which the piston (2) is pushed.

    As shown in FIG. 2, the weight (4) may be disposed on the piston (2). Although this arrangement reduces the maximum volume of the air chamber, it is possible to place a weight on the more circumferential side when the air main body is attached to the wheel, and to obtain a stronger centrifugal force. .

    As shown in FIG. 3, the weight (4) is arranged directly on the top of the piston (2), and the spring (5) is fixed between the piston (2) and the cylinder (1) by using a spring clamp (25). May be.

    As shown in FIG. 3, the piston (2) may be provided with a valve constituted by an O-ring (22) and an O-ring fastener (24).

    As shown in FIG. 4, the intake valve using an O-ring is composed of an O-ring fastener (24) having a piston (2), an O-ring (22), and a groove (26). When the piston (2) is pushed in, the O-ring (22) is pressed toward the piston (2), and the airtightness of the cylinder (1) and the piston (2) is maintained by the O-ring (22). On the other hand, when the piston (2) is pulled out, the O-ring (22) is pressed against the O-ring fastener (24), and the groove (26) causes a gap between the O-ring (22) and the O-ring fastener. For this reason, the air flows into the cylinder.

    As shown in FIG. 5, the piston (2) is arranged in the cylinder (1), and the O-ring (22), the O-ring fastener (24), the air supply pipe (6), and the weight (4) are arranged on the piston. May be arranged. In this case, a means for urging in the direction of expanding the volume of the air chamber formed by the cylinder (1) and the piston (2) is then obtained. That is, when the cylinder (1) is attached to the wheel in the manner shown in FIG. 19 using the fixture of FIG. 15, the rotation of the wheel slows down and the centrifugal force becomes weak. When it goes vertically upward, the volume of the compressed air chamber is expanded by the action of gravity acting on the weight.

    As shown in FIG. 6, an air chamber having a variable volume may be configured by a bellows structure curtain (34). That is, a bellows structure curtain (34) may be formed between two plates (37) each having a side fixed by a hinge (35). In FIG. 6, a spring (5) is provided in the air chamber as means for urging the air chamber in the direction of expanding, but as shown in FIG. 8, an elastic plate is attached to the bellows structure curtain (34). (36) may be provided.

    As shown in FIG. 9, an air chamber having a variable volume may be configured by a lantern-shaped bellows structure curtain (34). In FIG. 9, a spring (5) is provided in the air chamber as means for energizing the volume of the air chamber in the expanding direction. However, as shown in FIG. 11, a spring (5) is provided outside the air chamber. Also good.

    As shown in FIG. 12, an air chamber having a variable volume may be configured by a hollow elastic body (39). In FIG. 12, as a means for urging the volume of the air chamber in the direction of expanding, the restoring force of the hollow elastic body (39) is used, but as shown in FIG. 14, the weight (4) and the lid (13) are spring-loaded. (5) may be provided as means for energizing in the direction of expanding the volume of the air chamber.

  The example of the installation method to the wheel of a pneumatic main body is demonstrated.

    As shown in FIG. 15, the fixture of the type that is fixed to the spokes of the wheel is composed of a main body fixing cylinder (27), a main body fixing cylinder fixing plate (29), and a weight shake prevention cylinder (28). ) And the anti-shock cylinder (28) are connected by a groove-like screw part (32). There are four main body fixing cylinder fixing plates (29), one on each side of the main body fixing cylinder (27), a screw is passed through the screw hole (23), and two spokes are arranged on one side. It fixes by pinching | interposing with a cylinder fixing plate (29). As shown in FIG. 16, the main body (30) is fixed to the fixture of FIG. When fixing the air main body with the weight in the cylinder as shown in FIG. 3, the weight prevention cylinder (28) in FIG. 15 may be removed and fixed as shown in FIG.

    In FIG. 15, by removing the anti-shock cylinder (28), the weight (4) or the piston pusher (3) installed in the air in FIG. 1 or 2 having the piston pusher (3). Can be pushed in directly, and air can be manually supplied in an emergency.

    As shown in FIG. 19, the pneumatic main body (30) is installed on the fixture of FIG. 15, and the spoke (17) is sandwiched and fixed by the main body fixing cylinder fixing plate (29), and the air supply pipe (6) is attached to the tire. Connect to air supply port (19). Further, in order to prevent the center of gravity of the wheel from being biased, a center of gravity correction weight (21) may be attached to the spoke (17) with a fixed plate (18).

    As shown in FIG. 20, a fixture that is fixed to the axle may be used. The pneumatic main body (30) is housed in the main body fixing cylinder (27), and the fixing tool (40) to the axle is fixed to the axle as shown in FIG. The air supply body (30) is fixed to the wheel by the compression force of the spring (5).

    As shown in FIG. 23, a fixture incorporated in the wheel may be used. The main body fixing cylinder (27) accommodates the main body fixing cylinder (27), the main body fixing cylinder (27) can be opened and closed by a hinge (5), and the main body fixing cylinder is attached to the rim plate (42) of the wheel as shown in FIG. The fixing plate (29) is fixed. Moreover, you may attach the weight (21) for gravity center correction | amendment which prevents that the gravity center of a wheel biases like FIG.

    FIG. 26 is a fixture in which a main body fixing plate (47) and a rim fixing plate (43) are installed on a bottom plate (48), and a pneumatic main body constituting a bellows type air chamber by a bellows structure curtain of FIG. Used when fixed to. As shown in FIG. 27, a fixing screw hole is provided in the rim (16) in advance, the rim fixing plate (43) is fixed to the screw hole through the screw (44), and the air supply pipe (6) is supplied to the tire. Connect to mouth (19).

(1) Cylinder (2) Piston (3) Piston pusher (4) Weight (5) Spring (6) Air supply pipe (7) Screw thread (8) Intake valve clamp (9) Intake valve (10) Safety valve (11) Safety valve fastener (12) Support shaft (13) Lid (14) Hole (15) Tire (16) Rim (17) Spoke (18) Fixing plate (19) Tire air supply port (20) Safety valve spring ( 21) Weight for correcting the center of gravity (22) O-ring (23) Screw hole (24) O-ring fastener (25) Spring fastener (26) Groove (27) Body fixing tube (28) Weight-shake prevention tube (29) Body Fixed cylinder fixing plate (30) Pneumatic body (32) Groove-shaped screw part (34) Bellows structure curtain (35) Hinge (36) Elastic plate (37) Plate (38) Storage case (39) Hollow elasticity Body (40) Fixing to axle (41) Reinforcement plate 42) Rim plate (43) rim retaining plate (44) screws (46) axle (47) body fixing plate (48) bottom plate

Claims (3)

An air chamber with a variable volume;
An intake valve provided in the air chamber;
An air supply pipe provided in the air chamber;
A weight that urges the air chamber in a direction to compress the volume of the air chamber by centrifugal force provided in the air chamber;
Means for restoring the volume of the compressed air chamber to the state before compression;
With air inflator. An air chamber with a variable volume,
Cylinder and piston,
Or a curtain of bellows structure,
Or, it is composed of a hollow elastic body,
As a means to restore the volume of the air chamber to the state before compression,
By providing an elastic body inside or outside the air chamber,
Or by giving elasticity to the objects that make up the variable air chamber,
Alternatively, the inflator according to claim 1, wherein a flow line of a weight that enables the volume change of the air chamber is arranged so that gravity is applied to the weight in a direction in which the volume of the air chamber is expanded by rotation of the wheel.   3. The inflator according to claim 1 or 2, further comprising means for fixing to a wheel.

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