JPH11105515A - Tire inflator for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire inflator for a vehicle capable of being charged with air at high speed and at high precision corresponding to different tire sizes. SOLUTION: This tire inflator comprises a lifter 20 vertically moving placed with a wheel W on it; a cylindrical inner air charging dome 40 installed above the lifter 20 to be capable of supplying compressed air and of forming at air charging port between a bead part circumferential edge of the tubeless tire T and a circumferential edge of the wheel W, by pushing down an upper side circumferential surface of a tubeless tire T of a small diameter mounted on the wheel W; and a cylindrical outer air charging dome 50 vertically movably installed outside and above the inner air charging dome 40 to be capable of supplying compressed air, and of forming an air charging port between the bead part circumferential edge of the tubeless tire T and the circumferential edge of the wheel W, by pushing down an upper side circumferential surface of the tubeless tire T of a large diameter mounted on the wheel W when it is moving down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire inflator for a vehicle capable of performing high-speed and high-precision air filling corresponding to different tire sizes.

[0002] In a vehicle production line, it is necessary to instantaneously fill a tubeless tire mounted on a wheel with air. As such a device, a vehicle tire inflator has been proposed. In the case of such a tire inflator, it is necessary to support not only one type of tire size (including a case where wheels are different), but also different types of tire sizes. Some have been proposed.

[0003]

However, in the conventional models corresponding to such different-sized tires, the structure is complicated or the speed of the production line is reduced to about 2 seconds or less. While it is required to complete the air filling, there is a disadvantage that the filling time (driving time) is long.

The present invention has been made in view of such conventional problems, and appropriately switches between an inner air-filled dome and an outer air-filled dome in accordance with the size of a tire. It is an object of the present invention to provide a tire inflator for a vehicle that allows for a good air filling.

[0005]

According to a first aspect of the present invention, there is provided a lifter which moves up and down by mounting a wheel, and is provided so as to be able to supply pressurized air above the lifter, and the wheel is mounted on a mounter. A tubular inner air-filled dome capable of forming an air-filling port between a bead portion periphery of the tubeless tire and the wheel periphery by pushing down an upper surface of the inked first size tubeless tire; It is installed so that it can move up and down above the outside of the inner air filling dome and can supply pressurized air,
Further, at the time of its descending, the upper surface of the tubeless tire of the second size mounted on the wheel is pushed down, so that an air filling port can be formed between the periphery of the bead portion of the tubeless tire and the periphery of the wheel. And an outer air-filled dome.

According to a second aspect of the present invention, the vertical movement mechanism of the outer air-filled dome includes a plurality of upright guide members suspended from a ceiling frame of the machine frame, and the upright vertically movable members are vertically movable. And a plurality of sliding guides fixed to the outer air-filled dome, and one or two slide pins fixed to one or two places of the outer air-filled dome and having a cam pin near its upper end. The cam block of the hanging block member and the cam pin of the hanging block member are engaged to form a cam groove capable of displacing the first and second positions of the cam pin. One or two cam plate plates movably mounted in the horizontal direction, and the one or two cam plate plates fixed to the upper side of the machine frame to advance and retreat the one or two cam plate plates in the horizontal direction. That in vehicle tire inflator according to claim 1, characterized in that a drive means.

According to a third aspect of the present invention, a stopper block detachably mounted on an upper end side of the upright guide member is directly or indirectly attached to the cam plate plate.
The second movement of the cam plate plate is caused by the forward / backward movement of the driving means.
The cam pin of the suspension block member is engaged with a position below the position, and when the outer air-filled dome is lowered, it is interposed at the upper end of the sliding guide portion. In the vehicle tire inflator.

[0008]

1 to 5 show an example of a vehicle tire inflator according to the present invention. In the figure, 10 is a machine frame, 11 is a base frame forming a lower end thereof, 12 is a vertical frame erected in the vertical direction, and 13 is a ceiling frame passed between upper ends of the vertical frame 12. As shown in FIG. 1, two rail members 14, 14 such as a conveyor for transporting the mounted wheel W of the tubeless tire T, are installed in parallel at an intermediate portion of the vertical frame 12.

Reference numeral 20 denotes a lifter which mounts the mounted wheel W of the tubeless tire T and moves up and down.
Reference numeral 30 denotes a wheel clamp for fixing the wheel W placed on the lifter 20 from above, and reference numeral 40 denotes a wheel W and a tubeless tire T of a first size (small diameter size).
In the case of, when the wheel W and the tubeless tire T are of the second size (large diameter size), the tubular inner air filling dome 50 for filling the tubeless tire T with air is used to supply air to the tubeless tire T. A cylindrical outer air-filled dome 60 for filling is a vertical movement mechanism for vertically moving the outer air-filled dome 30.

The lifter 20 has a substantially frustoconical pedestal 21 on the upper end side for receiving the bottom surface of the wheel W, and is vertically moved by a cylinder mechanism 22 such as hydraulic or pneumatic. ing. A cylindrical cylinder holder 23 that slidably holds a movable upper end portion of the cylinder mechanism 22 is fixed by a support rod 24 made of a plurality of long bolts or the like. A part of the cylinder mechanism 22 is provided with a rotation preventing mechanism 70 including a rotation preventing rod 71 hung down from the support 21 and a rotation preventing receiver 72 attached to the cylinder holder 23 and fitted with the rotation preventing rod 71. It is provided.

As described above, the position control when the lifter 20 that moves up and down by the cylinder mechanism 22 and the like rises differs depending on the size of the wheel W and the tubeless tire T, and it is necessary to cope with this. This is performed by, for example, a lifter position control mechanism 80 provided on the lifter side and a position detection sensor unit 90 provided inside the inner air filling dome 30.

First, the lifter position control mechanism 80 includes:
The wheel W and the tubeless tire T correspond to the second size (large-diameter size) described above. The holder rod 81 attached to the bottom surface of the receiving base 21 and the holder rod 81 A suspended hanging rod 82 and a sensor driving unit 83a, which is fixed to the lower end side of the hanging rod 82 and includes a plurality of switch pressing pieces and the like, as shown in FIG. A plurality of sensors 84a such as limit switches are installed in parallel with the lift stroke control panel 83 and the cylinder holder 24, and the sensor drive section 83a of the lift stroke control panel 83. Sensor board 84 and lifting stroke control board 83
, Ie, a sensor unit 85 for detecting the start position of the movable cylinder 23.

In the lifter position control mechanism 80, a plurality of drive positions are set in advance in accordance with the width (height) of each type of the wheel W and the tubeless tire T by adjusting the position of each sensor drive section 83a. deep. Therefore, when the pedestal 21 rises due to the rise of the cylinder mechanism 22, the elevation stroke control panel 83 also rises accordingly, and the sensor drive unit 83 a contacts the corresponding sensor 84 a of the switch panel 84, Driven, lifter 20
The climb is stopped. At this time, the types of the wheel W and the tubeless tire T that have been transported are detected at the stage of the transport or the like, and the sensor driving unit 83a corresponding to the type is detected.
And only the sensor 84a is driven.

The wheel clamp 30 has a centered conical portion 31 at the lower end thereof, a clamp rod 32 which penetrates the center of the intermediate bottom 41 inside the inner air-filled dome 40 in an airtight manner, and a top of the ceiling frame 13. And the lower end of a drive rod 33a such as a piston rod is connected to the clamp rod 32.
And driving means 33 such as a cylinder connected to the upper end of the motor. In fixing the wheel W on the cradle 21 of the lifter 20, the driving means 33 is driven to lower the driving rod 33a, and the centering conical portion 31 at the tip of the clamp rod 32 is inserted into the center hole of the wheel W. Insert and perform.

As described above, the inner air-filled dome 40 is for accommodating the case where the wheel W and the tubeless tire T are of the first size (small diameter size). As shown in FIG. 8, the intermediate bottom 41 has a plurality of (four) uprights 41 in which an air supply passage 42 a is formed and the upper end of which is suspended from the ceiling frame 13. Installation guide member 42
The lower end of the tubeless tire T is fixed, and an annular ring 43 for pressing down and sealing the upper surface of the tubeless tire T is mounted inside the lower end. Also, inside the inner air-filled dome 40, pressurized air from an air supply means 100 such as an air tank provided at the upper end side of the machine frame 10 is provided.
The air is supplied and filled through the second air supply path 42a.

As described above, the outer air-filled dome 50 corresponds to the case where the wheel W and the tubeless tire T are of the second size (large-diameter size). The upright guide member 42 is fitted in the axial through holes 52 a of a plurality (four) of sliding guide portions 52 fixed to the top plate 51 and vertically fitted to the outer periphery of the bearing 40. An annular ring 54 is attached to the inside of the lower end of the tubeless tire T for pushing down and sealing the upper surface of the tubeless tire T. In the case of the outer air-filled dome 50 as well, pressurized air from an air supply means 100 such as an air tank provided on the upper end side of the machine frame 10 is provided inside the outer air-filled dome 50. It is designed to be supplied and filled through 42a.

In the case of the outer air-filled dome 50, when it is not used, it is lifted upward so that it does not obstruct the use of the inner air-filled dome 40, so that the outer air-filled dome 50 includes the sliding guide portion 52 and the like. Mechanism 60
, The up and down movement can be switched.

The vertical movement mechanism 60 includes a sliding guide 52
In addition, as is clear from FIGS. 9 and 10, for example, a bifurcated suspension block member fixed to two opposing positions of the top plate 51 of the outer air-filled dome 50 and having a cam pin 62 near its upper end. The cam pin 62 has a deformed S-shaped cam groove (hole) 64 formed on two opposed cam plate plates 63 and capable of being displaced between a first position h1 and a second position h2. Is engaged. Here, the first position h1 indicates the standby position where the outer air-filled dome 50 is lifted, and the second position h2 indicates the air-filled position where the outer air-filled dome 50 is pushed down.

The two cam plate plates 63, 63 are integrated at one end (the left side in FIG. 9) by a connecting member 65. Inside the connecting member 65, two of the upright guide members 42 are provided.
Two stopper blocks 66 are detachably mounted on the outer periphery of the upper end side of the book. When the outer air-filled dome 50 is pushed down, the stopper block 66 is formed in a gap between the base end of the standing guide member 42 on the ceiling frame 13 side and the upper end surface of the sliding guide 52 in a lowered state. It is inserted to prevent the outer air-filled dome 50 from lifting or rattling, and its height h3 is just the length of the gap.

As is apparent from FIGS. 4 and 5, the upper ends of the two cam plate plates 63, 63 are, for example, rails 67.
1 and a sliding mechanism 67 composed of a sliding portion 67b having a bearing structure, is attached to the ceiling frame 13 side, and the center of the connecting member 65 is located above the vertical frame 12 as is clear from FIG. A drive rod 68a, such as a piston rod, of a drive means 68, such as a cylinder, fixed to the shift portion is connected.

Therefore, for example, when the outer air-filled dome 50 is in the raised standby position, the cam plate plates 63, 63 are driven by the driving rod 68 of the driving means 68.
The retracted position is drawn to the drive means 68 side by a. Therefore, the cam pin 62 of the suspension block member 61 is located at the first position h1 of the cam groove 64 of the cam plate plate 63.
Take the engaged state. In this state, if the driving means 68 is driven to extend the driving rod 68a, the cam plate plates 63, 63 are pressed by the driving rod 68a. At this time, the cam pin 62 of the suspension block member 61 comes into engagement with the second position h2 of the cam groove 64 of the cam plate plate 63, so that the second position h2
The outer air-filled dome 50 is pushed down by the difference between the air-filled dome 50 and the first position h1 to take the air-filled position as shown in FIGS.

At this time, as shown in FIG. 9, each of the stopper blocks 66 attached to the inside of the cam plate plates 63, 63 is provided with a corresponding base member 42 of the corresponding upright guide member 42 on the ceiling frame 13 side. It is inserted into the gap between the end and the upper end surface of the sliding guide 52 in a lowered state. As a result, lifting and rattling of the outer air-filled dome 50 are completely prevented. Of course, from this state, the driving means 68 causes the cam plate plates 63, 6
By retracting 3, the raised standby position of the outer air-filled dome 50 can be easily and quickly realized.

The position detecting sensor section 90 provided inside the inner air-filled dome 30 has an upper surface of the wheel W rising at the lowermost end thereof, as is apparent from FIGS. A detection unit 91 directly in contact with the side;
The detecting portion 91 is attached, and a hanging rod portion 93 connected to a telescopic portion 92a such as a piston rod hanging from an elastic holding means 92 such as an air cylinder mounted on the intermediate bottom 41 of the inner air filling dome 40.
And a sensor 94 mounted on the outer periphery of the elastic holding means 92 to detect the movement of the hanging rod 93.

Next, a case will be described in which the tubeless tires T having different sizes are filled with air by the vehicle tire inflator having the above-described configuration. First, when filling the first size (small diameter) tubeless tire T with air, the target wheel W
And when the tubeless tire T is carried into the rail members 14 such as a conveyor, its size is determined,
Based on this data, the wheel W and the tubeless tire T are transported to the receiving table 21 side of the lifter 20. During this transfer, the vertical movement mechanism 6 of the outer air-filled dome 50
0 driving means 68 to drive the cam plate plate 63,
63 is retracted to bring the outer air-filled dome 50 to the raised standby position.

When the wheel W and the tubeless tire T reach the pedestal 21 of the lifter 20, the movement of the rail members 14, 14 is stopped, the lifter 20 is driven, and the pedestal 21 is raised. 4, the operation is performed until the upper surface side of the wheel W comes into contact with the detection unit 91 of the position detection sensor unit 90. While the lifter 20 is being lifted, the driving means 33 of the wheel clamp 30 is driven so that the centering conical portion 31 at the tip of the clamp rod 32 is brought into contact with the center hole of the wheel W. By this contact, the wheel W and the tubeless tire T are firmly fixed on the pedestal 21, and at the same time, the upper surface of the tubeless tire T is pushed down by the annular ring 43 of the inner air-filled dome 40 and the bead portion periphery An air filling port is formed between the wheel and the periphery of the wheel.

On the other hand, during the process of forming the air filling port, pressurized air from the air supply means 100 is guided into the inner air filling dome 40 through the air supply path 42a of the upright guide member 42 to be filled. Keep it. Therefore, the pressurized air is filled into the tubeless tire T almost simultaneously with the formation of the air filling port. This air filling is performed in about 2 seconds. Due to this air filling, a large restoring force acts on the periphery of the bead portion of the tubeless tire T. Therefore, when the lifter 20 is lowered almost at the same time as the end of the air filling, the air filling port is instantly closed.

At the time of filling with air, a large load of several to several tens of tons is applied to the inner air-filled dome 40 side.
Is held by the plurality (four) of the upright guide members 42 fixed to the ceiling frame 13, so that a stable operation can be obtained without any displacement or lifting. By the way, all the operations in the tire inflator are completed within approximately 10 seconds.

Next, when the second size (large diameter) tubeless tire T is filled with air, the wheel W and the tubeless tire T are filled in the same manner as in the first size (small diameter size). For the lifter 20
Convey to one side. During this transfer, the driving means 68 of the vertical movement mechanism 60 of the outer air-filled dome 50 is driven to push out the cam plate plates 63, 63, and to push down the outer air-filled dome 50 to the air-filled position. The switching to the air filling position can also be performed during the transport time of the wheel W and the tubeless tire T, and is completed within approximately two seconds.

When the wheel W and the tubeless tire T reach the cradle 21 of the lifter 20, the movement of the rail members 14, 14 is stopped, the lifter 20 is driven, and the cradle 21 is raised. , Shown in FIG. 3,
The wheel W is controlled by the lifter position control mechanism 80.
The process is performed until the height reaches the height set according to the width (height) of the type of the tubeless tire T. While the lifter 20 is being lifted, the driving means 33 of the wheel clamp 30 is driven so that the centering conical portion 31 at the tip of the clamp rod 32 is brought into contact with the center hole of the wheel W. By this contact, the wheel W and the tubeless tire T are firmly fixed on the pedestal 21, and at the same time, the upper surface of the tubeless tire T is pushed down by the annular ring 54 of the outer air-filled dome 50, and the bead portion periphery An air filling port is formed between the wheel and the periphery of the wheel.

On the other hand, during the step of forming the air filling port, pressurized air from the air supply means 100 is supplied through the air supply path 42 a of the upright guide member 42 and the inner air filling dome 40 to form the outer air filling dome 5.
It is guided into an annular ring 54 of zero and is filled. Therefore, the pressurized air is filled into the tubeless tire T almost simultaneously with the formation of the air filling port. This air filling is performed in about 2 seconds. Due to this air filling, a large restoring force acts on the periphery of the bead portion of the tubeless tire T. Therefore, when the lifter 20 is lowered almost simultaneously with the end of the air filling, the air filling port is instantly closed.

At this time, a large load of several to ten to several tons is applied to the outer air-filled dome 50 side, but a plurality (four) of the outer air-filled dome 50 in a lowered state. Sliding guide part 5
A cam plate 63, a gap between the upper end surface of the second guide member 2 and the base end of the standing guide member 42 on the ceiling frame 13 side.
Since the stopper block 66 attached to the 63 is inserted, lifting and rattling of the outer air-filled dome 50 are almost completely prevented, and stable operation can be obtained. Incidentally, all the operations of the tire inflator are completed within almost 10 seconds.

In the above-described embodiment, the outer air-filled dome 50 has good stability and is preferable.
In the vertical movement mechanism 60, the suspending block member 61, the cam pin 62, the cam plate plate 63, the stopper block 66, and the like are provided in a pair at opposing positions, but the present invention is not limited thereto. It is also possible to deal with one.

[0033]

As is clear from the above description, the vehicle tire inflator according to the present invention has the following excellent effects.

(1) First, by switching between the inner air-filled dome and the outer air-filled dome with one device, it is possible to easily cope with air-filling of wheels and tubeless tires having different sizes.

(2) Since the vertical movement mechanism of the outer air-filled dome is a mechanical mechanism (cam mechanism) driven by a drive means such as a single cylinder, the number of parts is small, reliable and high. Reliability is obtained.

(3) In this vertical movement mechanism, the stopper block can be attached and detached at the same time as the switching of the outer air-filled dome, and the time required for these operations is as short as about 2 seconds or less. Because of this, these actions
This can be performed, for example, during the transport time of the wheel and the tubeless tire without requiring a single operation time, and the entire apparatus can be operated efficiently without waste. Also,
As a result, the entire process time from the loading of the wheel and the tubeless tire to the filling of the air and the transporting of the wheel and the tubeless tire after the filling can be suppressed to within about 10 seconds, and extremely good productivity can be obtained.

(4) Although a large load of several to several tens of tons is applied to the outer air-filled dome side at the time of air-filling, when the stopper block is employed, the outer air-filled dome is formed due to the rigidity of the block itself. Without lifting or rattling,
A stable and reliable operation can be obtained.

(5) Further, since the switching of the outer air-filled dome and the locking by the stopper block are performed by the driving means including one cylinder, the number of parts can be greatly reduced.
Along with cost reduction, improvement in maintainability can be expected. For example, switching this filling dome and locking the filling dome,
In the case of using independent cylinder mechanisms, not only the number of parts increases, but also a problem that a plurality of control circuits and the like are required arises.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an entire vehicle tire inflator according to the present invention.

FIG. 2 is a partial longitudinal side view showing the entirety of the vehicle tire inflator according to the present invention and showing the upper half of the outer air-filled dome in different left and right operation states.

FIG. 3 is an enlarged partial longitudinal side view showing an enlarged lower half of FIG. 2;

FIG. 4 is an enlarged partial longitudinal side view showing an air filling step of a tubeless tire of a first size (small diameter size), which is an enlargement of an upper half portion of FIG. 2;

FIG. 5 is a partially enlarged longitudinal sectional side view showing an air filling step of a tubeless tire of a second size (large diameter size), which is an enlargement of an upper half portion of FIG. 2;

FIG. 6 is a partially enlarged front view showing a vertical movement mechanism of an outer air-filled dome of the vehicle tire inflator according to the present invention.

FIG. 7 is a partially enlarged side view showing a lifter position control mechanism of the vehicle tire inflator according to the present invention.

FIG. 8 is a partial cross-sectional plan view showing a fixed state of a standing guide member on an inner air filling dome of the vehicle tire inflator according to the present invention.

FIG. 9 is a partial cross-sectional plan view showing a sliding guide portion on an outer air-filled dome and a vertical movement mechanism of the vehicle tire inflator according to the present invention.

FIG. 10 is an exploded perspective view showing a sliding guide part on an outer air-filled dome and a vertical movement mechanism of the vehicle tire inflator according to the present invention.

FIG. 11 is an enlarged side view showing a position detection sensor section of the vehicle tire inflator according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Machine frame 13 Ceiling frame 20 Lifter 30 Wheel clamp 40 Inner air filling dome 42 Standing guide member 50 Outer air filling dome 52 Sliding guide part 60 Vertical movement mechanism of outer air filling dome 61 Suspended block member 62 Cam pin 63 Cam plate plate 64 Cam groove 66 Stopper block 68 Driving means W Wheel T Tubeless tire h1 First position of cam groove h2 Second position of cam groove

Claims (3)

[Claims] 1. A lifter that moves up and down with a wheel mounted thereon, and an upper week of a tubeless tire of a first size mounted above the lifter and capable of supplying pressurized air and mounted on the wheel. Surface of the tubeless tire, a cylindrical inner air-filled dome capable of forming an air-filling port between the bead portion rim of the tubeless tire and the wheel rim, and can move up and down above the outside of the inner air-filled dome. And, the pressurized air is installed so as to be able to be supplied, and further lowers the upper surface of the tubeless tire of the second size mounted on the wheel at the time of its lowering, and the bead portion periphery of the tubeless tire and the wheel periphery A tubular outer air-filled dome having an air-filling port formed therebetween. Ear inflator. 2. The vertical movement mechanism of the outer air-filled dome is linked to a plurality of upright guide members suspended from a ceiling frame of a machine frame and the upright guide members so as to be vertically movable. A plurality of sliding guides fixed to the outer air-filled dome, one or two suspension block members fixed to one or two places of the outer air-filled dome and having a cam pin near an upper end thereof;
The cam pin of the hanging block member is engaged to form a cam groove capable of displacing the first and second positions of the cam pin, and the cam pin is movable in a horizontal direction on a ceiling frame of the machine frame. One or two attached cam plate plates, and the one or more cam plate plates fixed to the upper side of the machine frame and
2. The vehicle tire inflator according to claim 1, further comprising a driving means for moving the two cam plate plates forward and backward in the horizontal direction. 3. A stopper block detachably mounted on an upper end side of the upright guide member, which is directly or indirectly attached to the cam plate plate, and wherein a second movement of the cam plate plate is performed by advancing and retreating of the driving means. 3. The vehicle according to claim 2, wherein a cam pin of the suspension block member is engaged at a position below the position, and when the outer air-filled dome is lowered, the cam pin is interposed at an upper end of the sliding guide portion. For tire inflator.