JP3590895B2 - Air chuck - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an air chuck that is connected to a tire valve and opens the tire valve when performing a tire charging / exhausting operation.
[0002]
[Problems of the prior art]
In order to adjust the air in the tire to a predetermined pressure, the air is supplied into the tire using a compressor or the like, or the air in the tire is released.
At this time, if the hose on the charging / exhausting device side such as the compressor and the valve on the tire side are not securely connected, air leaks to the outside, which hinders charging / exhausting work.
[0003]
Conventionally, air leakage is likely to occur unless the operator presses the nozzle at the tip of the hose against the tire valve by hand, so that labor is wasted especially when charging and exhausting large tires. Become.
[0004]
In addition, large vehicles such as trucks and buses use double tires. In this case, the tire valves are provided on opposite surfaces of the two tires, and the width and space between the tires are very narrow. It is very difficult for an operator to perform a charging / exhausting operation with his / her hand in between.
[0005]
[Object of the present invention]
The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide an air chuck that can reliably and easily perform charging and discharging work of a tire.
[0006]
[Means for Solving the Problems]
The present invention provides the following means for solving the above problems.
( 1 ) An air chuck connected to a tire valve to open the tire valve, the air chuck having a valve mechanism at both ends of the chuck body. A locking plate formed by bending both ends in the same direction to form an insertion portion and bulging an intermediate portion in the same direction as the insertion portion, with the insertion portions inserted into the notches, respectively. A cylindrical body slidable in the axial direction is mounted on the outer peripheral surface of the chuck body so as to sandwich the locking plate between the outer peripheral surface of the chuck body and the outer peripheral surface of the chuck body. The body is slid and one of the insertion portions of the locking plate is pushed into the hollow portion of the chuck body on the inner peripheral surface of the cylindrical body, and the insertion portion is inserted into the outer pipe of the tire valve inserted into the chuck body. the tip This Is not the chuck body and fixably constructed tire valve engaged with the the outer peripheral surface of the chuck body is connected to one end of the hollow shaft communicates the hollow portion of both the axial direction in the hollow shaft A slide member is provided which is slidable, and the slide member is connected to the cylinder mounted on the outer peripheral surface of the chuck body by a connection member, and the cylinder is slid by sliding the slide member. An air chuck, characterized in that:
( 2 ) The air chuck according to ( 1 ), wherein the slide member is a tube mounted on an outer peripheral surface of the hollow shaft.
( 3 ) In the air chuck according to the above ( 1 ) or ( 2 ), the connecting member is supported by the chuck body and the cylindrical body at both ends, and is provided in a pair at positions opposed to each other. Yes, air chuck.
( 4 ) The air chuck according to any one of ( 1 ) to ( 3 ), wherein the vicinity of an end of the hollow shaft on the chuck mounting side is bent.
( 5 ) The air chuck according to ( 4 ), wherein the connecting member is bent along a bent portion near an end of the hollow shaft on a chuck mounting side.
( 6 ) In the air chuck according to any one of the above ( 1 ) to ( 5 ), a connection fitting to a pipe of another device is attached to an end of the hollow shaft opposite to the chuck body attachment side. An air chuck, characterized in that:
[0007]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<A> Air Chuck As shown in FIGS. 3 and 4, the main body 100 of the air chuck 1 is a hollow cylindrical body or the like, and a connecting portion 101 for connecting to the hollow shaft 2 is attached to the outer peripheral surface thereof at a predetermined angle. The hollow portion 102 and the air passage 103 are in communication with each other.
[0008]
Internal threads 104 are provided at both ends of the hollow portion 102. A screw hole 105 is provided on the outer peripheral surface of the main body 100 in the vicinity of a position facing the opening of the air passage 103. A stopper 110 such as a short screw is screwed into the screw hole 105 while projecting from the outer peripheral surface of the main body 100.
[0009]
As shown in FIGS. 4 and 5, on the outer peripheral surface of the main body 100, two set grooves 106 are provided in the middle between the connecting portion 101 and the stopper 110 in the axial direction. Notches 107 are provided at both ends of the set groove 106 so as to penetrate to the hollow portion 102 in a direction orthogonal to the set groove 106.
[0010]
An engaging plate 120 is set in the set groove 106. The locking plate 120 is a strip-shaped steel plate or the like formed by bending both ends in the same direction at substantially right angles to form the insertion portion 121 and bulging the intermediate portion 122 in the same direction as the insertion portion 121. . The locking plate 120 is set in the axial direction along the setting groove 106 with the insertion portions 121 inserted into the notches 107 respectively.
[0011]
In addition, as shown in FIG. 4, a constricted portion 108 is recessed in the axial direction on the main body 100 side of the connecting portion 101.
[0012]
As shown in FIG. 4, the slide cylinder 130 is a cylinder having an inner diameter slightly larger than the outer shape of the main body 100, and a slit 131 is formed in a part thereof over the entire length in the axial direction. An elongated hole 132 is opened at a position facing.
[0013]
As shown in FIG. 5, the slide cylinder 130 is mounted on the outer peripheral surface of the main body 100 such that the locking plate 120 is sandwiched between the outer peripheral surface of the main body 100. At this time, the slit 131 is loosely fitted into the constricted portion 108 of the main body 100 as shown in FIG. As shown in FIG. 3, after the slide cylinder 130 is mounted, the above-described stopper 110 is screwed into the screw hole 105 through the long hole 132 to prevent the slide cylinder 130 from coming off in the axial direction.
[0014]
The valve mechanism is provided at both ends of the hollow portion 102 of the main body 100. As shown in FIG. 3, the valve mechanism includes a tongue 140 and a rubber ring 150, and is housed in the hollow portion 102 with the tongue 140 penetrating the rubber ring 150.
[0015]
A part of the outer diameter of the rubber ring 150 is formed slightly larger than the inner diameter of the hollow portion 102, and after the rubber ring 150 is pushed in and stored, only the tongue 140 moves without moving the rubber ring 150. It is configured to do.
[0016]
Accordingly, as shown in FIG. 5, when the taper outer surface 141 of the tongue 140 and the taper inner surface 151 of the rubber ring 150 are in contact with each other, the ventilation is cut off, and when they are separated, the ventilation becomes possible.
[0017]
After storing the valve member, the spacer 160 is stored. The spacer 160 has a notch 161 at an opposing position, and as shown in FIG. 3, the insertion portion 121 of the locking plate 120 can be pushed out through the notch 161. If the spacer ring 160 is not provided, the notch 107 may be closed when the rubber ring 150 is improperly set.
[0018]
After each of the above members is housed in the hollow portion 102, the ferrules 170 each having a tapered inlet portion are screwed into the inner screws 104 at both ends.
[0019]
<B> Hollow shaft As shown in FIG. 1, one end of a hollow shaft 2 is connected to a connecting portion 101 of the air chuck 1. The hollow portion of the hollow shaft 2 and the air passage 103 of the connecting portion 101 are communicated.
[0020]
The vicinity of the end of the hollow shaft 2 on the side of the air chuck 1 is bent so that the air chuck 1 can be easily connected to the tire valve. Further, a grip 21 is provided near the end opposite to the chuck 1, and a connection fitting 22 for connecting a hose of another device such as a compressor is provided at the most end.
[0021]
<C> A slide tube 3 slidable in the axial direction is attached to the outer peripheral surface of the slide tube hollow shaft 2.
[0022]
<D> Connecting arm The connecting arm 4 is a strip-shaped plate or the like, and its both ends are positioned at an intermediate position between the slit 131 and the elongated hole 132 of the slide tube 130 and at the end of the slide tube 3. And connected to each other. The connecting arms 4 are provided as a pair at opposing positions as shown in FIG. The connecting arm 4 is bent along the bent portion of the hollow shaft 2.
[0023]
With the above configuration, by sliding the slide tube 3, the slide cylinder 130 can be slid remotely through the connecting arm 4 to fix the air chuck 1.
[0024]
[Action]
When performing the tire charging / exhausting work, hold the grip 21 with one hand and the slide tube 3 with the other hand, and then, as shown in FIG. It is inserted from the base 170.
[0025]
After strongly pushing the tire valve 5 into the air chuck 1, the slide tube 3 is slid forward or backward, and the slide cylinder 130 is slid to the side where the tire valve 5 is inserted.
[0026]
As a result, as shown in FIG. 5, the tongue 140 and the valve core 51 of the tire valve 5 are pushed together and retreat, and the taper outer surface 141 of the tongue 140 and the taper inner surface 151 of the rubber ring 150 are connected. A gap is generated between the gaps, and charging and discharging can be performed through the gap.
[0027]
At the same time, one insertion portion 121 of the locking plate 120 is pushed into the hollow portion 102 by the inner surface of the slide cylinder 130, and the tip of the insertion portion 121 abuts on the screw-shaped outer pipe 52 of the tire valve 5. As a result, the tire valve 5 is gripped by the insertion portions 121 from both sides, so that the air chuck 1 can be fixed to the tire valve 5.
[0028]
When removing the air chuck 1 from the tire valve 5, if the slide cylinder 130 is slid in the opposite direction via the slide pipe 3, the locking by the insertion portion 121 is released by the restoring force of the locking plate 120, and the air chuck 1 is removed. it can.
[0029]
In addition, since the air chuck 1 has a valve mechanism at both ends, in the case of a double-tired vehicle with a small interval, the tip-side chuck is used for the rear tire and the hand-side tire is used for the front tire. If the chuck is used, the air chuck 1 can be easily attached and detached.
[0030]
[Effects of the present invention]
Since the present invention has been described above, the following effects can be obtained. <A> Since the air chuck of the present invention can be fixed to the tire valve, there is no possibility of air leaking to the outside, and the charging and discharging operation can be performed reliably.
[0031]
<B> Unlike the conventional case, the worker does not need to press the tire valve by hand, so that labor can be saved particularly in the case of charging and exhausting a large tire.
[0032]
<C> By attaching the hollow shaft and the slide member, the chuck can be inserted into the narrow space of the double tire at a position away from the tire, and the slide member is operated to fix the chuck to the tire valve. Therefore, even in the case of a double tire, the work of charging and discharging the tire can be easily performed.
[0033]
<D> Since the valve mechanism is provided at both ends, in the case of a double-tire vehicle with a narrow gap, the tip-side chuck is used for the rear tire and the hand-side chuck is used for the front tire. The air chuck can be easily attached and detached.
[Brief description of the drawings]
1 is an explanatory view of the entire air chuck of the present invention; FIG. 2 is a front view of a chuck main body; FIG. 3 is an explanatory view of an internal structure of the chuck main body; FIG. 4 is an explanatory view of an external structure of the chuck main body; Explanatory diagram showing action

Claims (6)

An air chuck connected to a tire valve to open the tire valve, wherein the air chuck has a valve mechanism at both ends of the chuck body.
Notches are provided by penetrating in and out of both ends of the hollow chuck body,
A locking plate formed by bending both ends in the same direction to form an insertion portion and swelling an intermediate portion in the same direction as the insertion portion is formed by inserting the insertion portion into the notch, and holding the chuck. It is arranged in the axial direction on the outer peripheral surface of the main body,
An axially slidable cylinder is mounted on the outer peripheral surface of the chuck body so as to sandwich the locking plate between the outer peripheral surface of the chuck body and
By sliding this cylindrical body, one of the insertion portions of the locking plate is pushed into the hollow part of the chuck body on the inner peripheral surface of the cylindrical body, and the outer pipe of the tire valve inserted into the chuck body is The chuck body is fixed to the tire valve by contacting and locking the tip of the insertion section,
One end of the hollow shaft is connected to the outer peripheral surface of the chuck body by allowing both hollow portions to communicate with each other,
The hollow shaft is equipped with a slide member that can slide in the axial direction,
The slide member and the tubular body mounted on the outer peripheral surface of the chuck main body are connected by a connecting member, and the slide body is slid so that the tubular body can be slid.
Air chuck. 2. The air chuck according to claim 1, wherein the slide member is a tube mounted on an outer peripheral surface of the hollow shaft. 3. The air chuck according to claim 1, wherein the connecting member is supported at both ends by the chuck main body and the cylindrical body, and is provided in a pair at opposite positions. 4. The air chuck according to any one of claims 1 to 3, wherein the vicinity of the end of the hollow shaft on the chuck mounting side is bent. The air chuck according to claim 4, wherein the connecting member is bent along a bent portion near an end of the hollow shaft on the chuck mounting side. The air chuck according to any one of claims 1 to 5 , wherein a connection fitting to a pipe of another device is attached to an end of the hollow shaft opposite to the chuck body attachment side, Air chuck.

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