JP2013217764A - Pressure gauge inspection apparatus - Google Patents

Pressure gauge inspection apparatus Download PDF

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Publication number
JP2013217764A
JP2013217764A JP2012088399A JP2012088399A JP2013217764A JP 2013217764 A JP2013217764 A JP 2013217764A JP 2012088399 A JP2012088399 A JP 2012088399A JP 2012088399 A JP2012088399 A JP 2012088399A JP 2013217764 A JP2013217764 A JP 2013217764A
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Japan
Prior art keywords
air
connector
gauge
inspection
flow path
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Pending
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JP2012088399A
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Japanese (ja)
Inventor
Masahiro Ase
正浩 阿瀬
Original Assignee
Toyo Seiki Kogyo Kk
東洋精器工業株式会社
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Priority to JP2012088399A priority Critical patent/JP2013217764A/en
Publication of JP2013217764A publication Critical patent/JP2013217764A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a pressure gauge inspection apparatus capable of simply inspecting an air gauge and a gauge of an air charging apparatus only by an inspection apparatus body without using a dedicated compressor, and being compact and convenient to carry.SOLUTION: The pressure gauge inspection apparatus is configured by a first connector 1 to be connected to an apparatus to be inspected; a second connector 2 to be connected to a valve 3a of a tire 3; first and second air flow channels 7, 8 respectively connected from a master gauge 4 to the first connector 1 and the second connector 2 through a branch pipe 6; and on-off valves 1, 2 which when the first connector 1 and the second connector 2 are respectively connected to targets to be connected, open respective flow channels, and when the targets are detached, close respective flow channels.

Description

  The present invention relates to a pressure gauge inspection device for inspecting an air gauge that measures the air pressure of a tire such as an automobile or a gauge (instrument) that displays the air pressure of an air filling device, and more particularly, the portability that can be carried. The present invention relates to a pressure gauge inspection apparatus provided.

The air pressure of tires such as automobiles needs to be set to a value suitable for driving for safe driving and fuel consumption reduction. Therefore, the tire pressure is measured using a simple air pressure measuring instrument (hereinafter referred to as “air gauge”) at a gas station or the like before traveling, and if the pressure is insufficient, the air is replenished to keep it appropriate.
However, if the air gauge is distorted for some reason, the measured tire air pressure may be higher or lower than the actual air pressure, and it may not be possible to set an appropriate air pressure.

  In addition, when an air filling device that fills air when a tire is repaired or assembled to a wheel or an air filling device of a tire changer, if the gauge that displays the filling air pressure is inaccurate, the tire should be at the correct air pressure. Cannot be filled with air. Therefore, it is necessary to periodically inspect whether the air gauge and the gauge of the air filling device are operating correctly.

Therefore, conventionally, in order to inspect an air gauge or a gauge of an air filling device, for example, an inspection apparatus as shown in Patent Document 1 has been proposed.
FIG. 5 schematically shows this inspection apparatus. By connecting a connector 31 of the inspection apparatus D to a compressor 23 which is a compressed air supply source 22, compressed air from the compressor 23 is converted into a pressure setting device. 24, it is sent to a master gauge 25 and an air chuck receptacle 26 connected to the device to be inspected. Then, a connector 30 of a hose 29 communicating with a device to be inspected, for example, a gauge 28 of an air filling device 27 of a tire changer, is connected to the air chuck receptacle 26, and the gauge 28 of the device to be inspected and the master gauge 25 of the inspection device The gauge is checked for errors.

Japanese Patent No. 4727808

  According to the inspection device D described above, by connecting the connector 30 of the device to be inspected to the air chuck receptacle 26, it is possible to inspect the gauge of the air filling device attached to the air gauge or the tire changer. . However, in this inspection apparatus D, a dedicated compressed air supply source such as a compressor is always required, and an air source is used at a gas station or a repair shop where the compressor is permanently installed, or at a repair vehicle where the compressor is mounted. It must be used by directly assembling the compressor. Therefore, it is inconvenient that only the inspection device D cannot be carried and used alone. In addition, since this inspection apparatus D requires various mechanisms such as a pressure setter and an adjustment mechanism for setting the value of the pressure setter, the apparatus is complicated and expensive.

  Therefore, the present invention can easily inspect the air gauge and the gauge of the air-filling device only by using the inspection device main body, for example, if there is a tire filled with air, without using a compressor that is a dedicated air source. It is an object of the present invention to provide a portable pressure gauge inspection device that is compact and easy to carry at low cost.

  In order to solve the above problems, the present invention takes the following technical means. That is, the pressure gauge inspection device of the present invention includes at least one first connector for connecting to a device to be inspected, a second connector including a connection port connectable to a tire valve, and a master gauge through a branch pipe. A first air flow path connected to the first connector and a second air flow path connected to the second connector. The first air flow path and the second air flow path include a first connector and a second connector. When each is connected to the object to be connected, each flow path is opened, and when the target is removed, an opening / closing valve is formed to close each flow path.

  In the present invention, the first connector and the second connector are open / close valves for opening the mouth of the connector when connected to an object to be connected and closing the mouth of the connector when removed. Furthermore, an air discharge valve for discharging the compressed air in the first air flow path and the second air flow path to the atmosphere may be provided.

  In the present invention, at least one of the first air channel and the second air channel may be formed of a flexible hose. In particular, the second air flow path connecting from the branch pipe to the second connector is preferably formed by a flexible hose. Further, the total length is preferably shortened in order to enhance portability as much as possible within a range where there is no problem in use operation, and for example, about 1 m is preferable.

According to the pressure gauge inspection device of the present invention, when inspecting an air gauge, compressed air of a pneumatic tire can be used as an air source.
When inspecting a gauge of an air filling device, a compressor air source directly connected to the air filling device can be used, but compressed air of a pneumatic tire can also be used. Therefore, it is not necessary to prepare a separate compressor air source for the gauge inspection.
Thereby, while being able to form a pressure gauge test | inspection apparatus lightweight and compact, there exists an effect that it can carry out only a pressure gauge test | inspection apparatus in a required location, and can test | inspect easily.

In the present invention, the second connector is preferably provided with a fastening member (chuck mechanism) for fastening the second connector to the valve portion of the tire.
As a result, when inspecting the gauge of an air gauge or an air filling device, the second connector can be securely fixed to the valve portion of the tire, so there is no need to hold it by hand. The inspection work can be performed easily with the master gauge part of the gauge inspection device.

The front view which is one Example of the pressure gauge test | inspection apparatus which concerns on this invention. The block diagram in the case of test | inspecting an air gauge using the pressure gauge test | inspection apparatus of FIG. The block diagram in the case of test | inspecting the gauge in an air filling apparatus using the pressure gauge test | inspection apparatus of FIG. The block diagram in the case of test | inspecting the gauge in an air filling apparatus using the pressure gauge test | inspection apparatus of FIG. The schematic sectional drawing which shows an example of the connector in the said gauge inspection apparatus. The block diagram for demonstrating the conventional gauge inspection apparatus.

  Hereinafter, details of the pressure gauge inspection apparatus of the present invention will be described with reference to the drawings showing embodiments thereof. FIG. 1 is a front view of an embodiment of a pressure gauge inspection apparatus according to the present invention, and FIGS. 2 and 3 are views showing a use state of the pressure gauge inspection apparatus.

This pressure gauge inspection device A includes a first connector 1 for connection to a device to be inspected, a second connector 2 for connection to a valve 3a of a pneumatic tire 3, and a master for displaying the pressure of compressed air. And a gauge 4.
The master gauge 4 is connected to a three-way branch pipe 6 via a gauge-side air flow path 5, and the three-way branch pipe 6 is connected to a first air flow path 7 connected to the first connector 1 and a second connector 2. Branching to the second air flow path 8.

  A manual air discharge valve 9 for releasing the compressed air in the flow path to the atmosphere is provided in the middle of the second air flow path 8 connected from the three-way branch pipe 6 to the second connector 2. In this embodiment, the push button 9a provided on the air discharge valve 9 is pressed to release the valve.

  The first connector 1 (male type) and the second connector 2 (female type) also serve as an on-off valve so that the mouth of the connector is released when connected to an object to be connected, and the mouth is closed when removed. It is formed as follows. For example, as shown in FIG. 4, by connecting to an object to be connected as shown in FIG. 4, the needle 1a at the center of the connectors 1 and 2 is pushed to open the valve 1b, and the connector is removed from the object to be connected. The valve 1b can be closed by being pushed by the spring 1c.

  The second air flow path 8 connected from the three-way branch pipe 6 to the second connector 2 is preferably formed of a flexible natural or synthetic rubber material. The total length is preferably as short as possible within a range that does not interfere with the use operation. For example, about 1 m is appropriate. Thereby, it can be made compact for carrying.

  In this embodiment, a chuck 10 that is a fastening member for fastening the second connector 2 to the valve 3 a of the tire 3 is provided integrally with the second connector 2. Thereby, the 2nd connector 2 can be fixed in the state attached to the valve | bulb 3a.

Next, the use of the pressure gauge inspection apparatus of the present invention will be described.
FIG. 2 shows a case where the air gauge B is inspected. First, the second connector 2 of the pressure gauge inspection device A is connected to a valve 3a of an automobile tire 3 filled with air, and is fixed to the valve portion by a chuck 10 (see FIG. 1) as a fixing member. The compressed air in 3 is introduced into the pressure gauge inspection apparatus A. In this state, the connection part 11 of the air gauge B is connected to the first connector 1. As a result, compressed air is introduced from the tire 3, and pressure values are displayed on the master gauge 4 of the pressure gauge inspection apparatus A and the gauge 12 of the air gauge B. At this time, if both pressure values are the same, the air gauge B is normal, and if they are different, it is determined that the air gauge B is defective, and repair adjustment is performed or replaced.
After inspecting the air gauge B, the pressure gauge inspection device A is removed from the tire 3, and the air gauge B is also removed from the pressure gauge inspection device A. Since the mouth of the first connector 1 and the second connector 2 is closed, the compressed air remains in the air flow paths 7 and 8 of the pressure gauge inspection apparatus A. An air discharge valve 9 is provided to release this residual compressed air. By manually pushing the push button 9a of the air discharge valve, the compressed air is released to the atmosphere and the gauge pressure of the master gauge 4 is returned to zero. be able to.

FIG. 3 is a diagram showing a case where a gauge of an air filling device C attached to a tire changer or the like is inspected. A general air filling device C is connected to an air source of the compressor 13 by a connecting portion 14. In addition, although illustration is abbreviate | omitted, it may be an air filling apparatus provided with the air filling mechanism (compressor etc.) inside.
The compressed air from the compressor 13 flows through the flow path 15, the on-off valve 16, the air discharge valve 17, the gauge 18, and the flow path 19 to reach the connection portion 20.

  When inspecting the gauge 18 of the air filling device C, the connecting portion 20 of the air filling device C is connected to the first connector 1 of the pressure gauge inspection device A as shown in FIG. 3A. Then, the compressed air from the compressor 13 is introduced into the pressure gauge inspection device A from the opened first connector 1 through the flow path 15 through the flow path 19 by opening the on-off valve 16. Since the second connector 2 is not connected and is in a closed state, the on-off valve 16 is closed when the gas no longer flows into the pressure gauge inspection apparatus A. Thereby, the pressure numerical value of the compressed air at the same static pressure is represented on the master gauge 4 of the pressure gauge inspection apparatus A and the gauge 18 of the air filling device C. At this time, if both pressure values are the same, the gauge 18 of the air filling device C is normal, and if they are different, it is determined that the gauge 18 of the air filling device C is defective, and repair and adjustment are performed. Or you will replace the gauge.

When inspecting the gauge 18 of the air filling device C, it is not always necessary to use the compressor 13 directly connected to the apparatus as an air source, and an air-filled tire can also be used as an air source.
That is, as shown in FIG. 3B, it is assumed that the compressor 13 cannot be used (is not used). At this time, the on-off valve 16 is closed. The first connector 1 and the connecting portion 20 are connected for inspection. And the 2nd connector 2 of the gauge test | inspection apparatus A is connected to the valve | bulb 3a of the pneumatic tire 3 similarly to the case of FIG. Compressed air from the tire enters the flow path 19 of the air filling device C from the gauge inspection device A via the first connector 1 and the connection portion 20 and enters the open / close valve 16 to be in a static pressure state.
The inspection is performed by comparing the gauge 18 and the master gauge 4 at this time.

As described above, according to the pressure gauge inspection apparatus A of the present invention, when the air gauge B is inspected, the inspection can be performed using the compressed air inside the tire, and the air filling device C such as a tire changer can be inspected. When the gauge 18 is inspected, the air source of the compressor 13 connected to the air filling device C can be used, but the compressed air of the pneumatic tire can be used without using the compressor 13 as an air source. Can be inspected.
And since the pressure gauge test | inspection apparatus A can be formed in a lightweight and compact, it can carry to a required location and can test | inspect a pressure gauge easily.

  As mentioned above, although the typical Example of this invention was described, this invention is not necessarily specified to said embodiment. For example, the air discharge valve 9 for discharging the compressed air in the air flow path to the atmosphere can be formed by being incorporated in either the first connector 1 or the second connector 2. Further, the position of the air discharge valve 9 may be provided in the middle of the gauge-side air flow path 5 and the first air flow path 7, or may be formed integrally with the three-way branch valve 6.

  The second connector 2 has a connection port (female type) that can be connected to the valve 3a of the tire 3. However, if a conversion connector or the like is prepared and a conversion connector is interposed as required, the other connector 2 A pressure source can also be used.

  Further, the master gauge 4 of the pressure gauge inspection apparatus A may be a digital system instead of an analog system using a pointer as shown in the above-described embodiments.

Moreover, the attachment position on the flow path of the 1st connector 1 and the 2nd connector 2 may be reverse.
In the present embodiment, the number of the first connector 1 is one, but the three-way branch pipe 6 may be replaced with a four-way branch pipe, and two first connectors 1 and two first air flow paths 7 may be provided. Further, the number of first connectors may be increased by increasing the number of branches.

  In the above-described embodiment, each of the first connector 1 and the second connector 2 also functions as an on-off valve that opens and closes simultaneously with being connected to the air gauge B or the tire valve 3a. A separate on-off valve may be provided adjacent to the first air flow path 7 side of one connector 1 and the second air flow path 8 side of the second connector 2. In this case, after connecting the first connector 1 or the second connector 2 to the object, the on-off valve is manually opened. In this case, if either the first connector 1 or the second connector 2 is removed after the inspection, the residual compressed air can be removed, so that the air discharge valve is not necessary.

  Others The present invention can be appropriately modified and changed within the scope of achieving the object and without departing from the scope of the claims.

  The present invention can be used for a pressure gauge inspection apparatus for inspecting an air gauge or a gauge of an air filling device.

A pressure gauge inspection device B air gauge C air filling device 1 first connector 2 second connector 3 tire 4 master gauge 5 gauge side air flow path 6 three-way branch pipe 7 first air flow path 8 second air flow path 9 air discharge valve 13 Compressor 16 On-off valve 17 Air discharge valve 18 Gauge

Claims (4)

  1. At least one first connector for connecting to the device to be inspected;
    A second connector comprising a connection port connectable to a tire valve;
    It consists of a first air flow path connected to the first connector via a branch pipe from the master gauge and a second air flow path connected to the second connector,
    When the first connector and the second connector are connected to the object to be connected to the first air channel and the second air channel, respectively, the channels are opened and the object is removed. An on-off valve for closing each flow path is formed in the pressure gauge inspection device.
  2. The first connector and the second connector also have a function of an on-off valve for opening the connector mouth when connected to an object to be connected and closing the connector mouth when removed. ,
    Furthermore, the pressure gauge test | inspection apparatus of Claim 1 which provided the air discharge valve for discharging | emitting the compressed air in the said 1st air flow path and the 2nd air flow path to air | atmosphere.
  3. The pressure gauge inspection device according to claim 1, wherein a fastening member for fastening the second connector to a valve portion of a tire is provided on the second connector.
  4. The pressure gauge inspection device according to any one of claims 1 to 3, wherein at least one of the first air flow path and the second air flow path is formed of a flexible hose.
JP2012088399A 2012-04-09 2012-04-09 Pressure gauge inspection apparatus Pending JP2013217764A (en)

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JP2012088399A JP2013217764A (en) 2012-04-09 2012-04-09 Pressure gauge inspection apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104075842A (en) * 2014-07-22 2014-10-01 国家电网公司 Pressure gage detector
CN106644262A (en) * 2016-09-22 2017-05-10 中车南京浦镇车辆有限公司 Field pressure calibration test valve and test method for railway vehicles
KR20200053800A (en) * 2018-11-09 2020-05-19 (주) 휴미시스템 The cover pannel for an embedded differential pressure gauge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148073U (en) * 1974-10-09 1976-04-09
JPS5241517U (en) * 1975-09-19 1977-03-24
JPH09240224A (en) * 1996-03-06 1997-09-16 Toru Azuma Method for utilizing compressed air in tire
JP2002174562A (en) * 2000-12-07 2002-06-21 Haibu:Kk Inspection device for pneumatic equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148073U (en) * 1974-10-09 1976-04-09
JPS5241517U (en) * 1975-09-19 1977-03-24
JPH09240224A (en) * 1996-03-06 1997-09-16 Toru Azuma Method for utilizing compressed air in tire
JP2002174562A (en) * 2000-12-07 2002-06-21 Haibu:Kk Inspection device for pneumatic equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104075842A (en) * 2014-07-22 2014-10-01 国家电网公司 Pressure gage detector
CN106644262A (en) * 2016-09-22 2017-05-10 中车南京浦镇车辆有限公司 Field pressure calibration test valve and test method for railway vehicles
KR20200053800A (en) * 2018-11-09 2020-05-19 (주) 휴미시스템 The cover pannel for an embedded differential pressure gauge
KR102119831B1 (en) 2018-11-09 2020-06-05 (주) 휴미시스템 The cover pannel for an embedded differential pressure gauge

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