KR101692060B1 - Ventilation test equipment for automotive lamp aircap - Google Patents

Ventilation test equipment for automotive lamp aircap Download PDF

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Publication number
KR101692060B1
KR101692060B1 KR1020150108850A KR20150108850A KR101692060B1 KR 101692060 B1 KR101692060 B1 KR 101692060B1 KR 1020150108850 A KR1020150108850 A KR 1020150108850A KR 20150108850 A KR20150108850 A KR 20150108850A KR 101692060 B1 KR101692060 B1 KR 101692060B1
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South Korea
Prior art keywords
pressure
air
compressed air
lamp
test
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KR1020150108850A
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Korean (ko)
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정장윤
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우창산업(주)
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/0806—Details, e.g. sample holders, mounting samples for testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/086—Investigating permeability, pore-volume, or surface area of porous materials of films, membranes or pellicules

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  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

An air permeability testing apparatus of an air cap for an automotive lamp according to the present invention comprises: a regulator for lowering a pressure of compressed air provided by a compressor to a prescribed test pressure; A switch connected to the regulator; A test housing in which compressed air having passed through a regulator is provided according to an operation of the switch; A jig provided in the test housing; A pressure gauge provided in a flow path between the switch and the test housing to measure a pressure of the compressed air; A flow meter provided in the flow path and measuring a flow rate of the compressed air; A pressure / flow rate determiner for providing measured values of the pressure gauge and the flow meter; And a piston which can be raised or lowered by a vertical switch and which is in contact with an upper portion of an air cap for an automobile lamp mounted on the jig when it is lowered and presses downward. The pressure / flow rate determiner compares the measured values of the pressure gauge and the flow meter with preset reference values to determine whether the air cap for the automobile lamp is defective. A compressed air inlet is formed on a lower surface of the piston of the clamp cylinder, a compressed air outlet is formed on a side surface thereof, and a passage through which the compressed air passes is formed between the compressed air inlet and the compressed air outlet.

Description

TECHNICAL FIELD [0001] The present invention relates to a ventilation test apparatus for an automotive lamp,

[0001] The present invention relates to an air permeability testing apparatus for an air cap for an automobile lamp, and more particularly, to an apparatus for testing air permeability of an air cap for an automobile lamp, The present invention relates to an air permeability testing apparatus capable of testing the air permeability of a plurality of types of air cap products having different air permeability standards.

The air cap for an automobile lamp is installed in a vent hole of a car lamp (head lamp, rear lamp, fog lamp hole, etc.) to allow air in and out of the lamp while repeating heating and cooling inside the lamp, Quot;

A schematic structure of such an air cap for an automobile lamp is shown in Fig.

The air cap includes an inner member having a hole to be inserted into the projection of the lamp housing, a membrane mounted on a surface opposite to the housing projection of the inner member, and a cover for receiving the inner member and the membrane, do.

FIG. 2 shows the manner in which the air cap is installed in the automobile lamp and the inside and outside of the lamp are ventilated when the inside of the lamp is repeatedly heated and cooled. In Fig. 2, one of the parts of the air cap for an automobile lamp is omitted for convenience of illustration.

First, the air inlet / outlet system is shown in the left part of FIG.

When the lamp is turned on, the temperature inside the lamp rises and the inside air thermally expands. As a result, the pressure inside the lamp becomes higher than the external pressure, and the heated internal air in the lamp escapes to the outside through the air-permeable membrane of the air cap. Conversely, when the lamp is turned off, the temperature inside the lamp lowers and the internal air shrinks. Accordingly, the pressure inside the lamp becomes lower than the external pressure, and the air outside the lamp flows into the inside through the air-permeable membrane of the air cap.

The right part of FIG. 2 shows the manner in which the inflow of moisture into the air is blocked.

As shown in the left-hand portion of FIG. 2 and as described in the relevant specification section, the membrane of the air cap is permeable to air. However, the membrane must not allow moisture in the air to pass through. When moisture in the air passes through the membrane, moisture contained in the air outside the automotive lamp enters the lamp, causing moisture to form in the lamp, which causes the lamp to become a bad factor. The right part of FIG. 2 shows the nature of the membrane which allows air to pass but does not pass the moisture in the air.

As described above, the performance required for the air lamp for an automobile lamp is the first of the air permeability to allow a flow rate of a predetermined degree or more at a predetermined pressure, and the second is the water tightness to block the inflow of water under a predetermined pressure.

In the prior art, the fiber fabric constituting the membrane, which is a component of the air cap, was subjected to the air permeability test for the air permeability test among the required performance of the air cap. In this fiber fabric testing method, the permeability test of the fabric of the membrane fiber was carried out by preparing a membrane sample with a specific standard (for example, 200 mm x 200 mm) and using a well-known fiber material breathability test method such as Frazier method.

However, the conventional ventilation test evaluation method has the following problems.

First, performance evaluation of benchmarking products was impossible.

When the benchmarking product is dismantled, it is possible to secure the membrane used for one air cap for an automobile lamp, but the membrane thus obtained can not be applied to a conventional air permeability test evaluation method. This is because, in the conventional ventilation test evaluation method, a sample fabric of a specific standard or more is indispensable, and the size of the membrane obtained by disassembling one air cap for an automobile lamp is far less than that.

Secondly, according to the conventional method, only air permeability of the membrane fiber fabric itself can be evaluated, and performance evaluation in the state where the membrane is assembled with other parts constituting the air cap for an automobile lamp is impossible. This is because there was no equipment capable of evaluating the air permeability in the state where the membrane was cut in the shape and size provided for one automobile lamp air cap product and the air cap for the automobile lamp assembled with the remaining parts was mounted.

However, there is a possibility that the membrane itself may not meet the specified breathability criteria in the assembled state even if it meets the specified breathability criteria. For example, if the internal flow path of the air cap for an automobile lamp is erroneously formed due to a defect in the assembling process, even if the membrane fabric itself satisfies the air permeability criterion, the air permeability criterion may not be satisfied in the assembled condition. Also, even if a membrane fabric satisfying the air permeability criterion is used for the reason such as adhesion of foreign substances such as adhesive to the membrane in the manufacturing process, there is a possibility that the air permeability criterion is not satisfied in the assembled state. The important thing is that the membrane fabric ventilation test evaluation method of the prior art fails to detect the case where the ventilating reference is undermined in the assembled state due to the manufacturing process mistake even though it meets the air permeability criterion in the assembled state.

The present invention provides an air-permeability testing apparatus for an air cap for an automobile lamp, which can solve the above-described problems of the related art and can evaluate the performance of a benchmarking product and can test the air- .

It is another object of the present invention to provide an air-permeability testing apparatus for an air cap for an automobile lamp, which can inspect various kinds of air cap products for automobile lamps only by replacing jigs.

Further, it is an object of the present invention to provide an air-permeability testing apparatus for an air cap for an automobile lamp, which can test both an automobile head lamp and a fog lamp air cap as one equipment.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. There will be.

In order to accomplish the above-mentioned object, a representative configuration of the present invention is as follows.

The apparatus for testing air permeability of an air cap for an automotive lamp according to an embodiment of the present invention includes a regulator for lowering the pressure of compressed air provided by a compressor to a prescribed test pressure; A switch connected to the regulator; A test housing in which compressed air having passed through a regulator is provided according to an operation of the switch; A jig provided in the test housing; A pressure gauge provided in a flow path between the switch and the test housing to measure a pressure of the compressed air; A flow meter provided in the flow path and measuring a flow rate of the compressed air; A pressure / flow rate determiner for providing measured values of the pressure gauge and the flow meter; And a piston which can be raised or lowered by a vertical switch and which is in contact with an upper portion of an air cap for an automobile lamp mounted on the jig when it is lowered and presses downward. The pressure / flow rate determiner compares the measured values of the pressure gauge and the flow meter with preset reference values to determine whether the air cap for the automobile lamp is defective. A compressed air inlet is formed on a lower surface of the piston of the clamp cylinder, a compressed air outlet is formed on a side surface thereof, and a passage through which the compressed air passes is formed between the compressed air inlet and the compressed air outlet.

According to another aspect of the present invention, there is provided an apparatus for testing air permeability of an air cap for an automotive lamp, the regulator including: a primary regulator for lowering the pressure of the compressed air provided by the compressor; And a secondary regulator that secondarily lowers the pressure of the compressed air from the primary regulator to a prescribed test pressure.

Another feature of the present invention is that the jig is detachable from the test housing. The jig can be prepared in various ways to cope with an air cap for automobile lamps of various shapes and sizes. The test taker can easily select the jig corresponding to the air cap for the test lamp and install it in the test housing. Therefore, it is possible to inspect the air cap product for automobile lamps of various types / shapes only by changing the jig

The air permeability test equipment of the air cap for an automobile lamp of the present invention may further include a change-over switch. The changeover switch is connected to the pressure / flow rate determination unit, and selects the reference value for the head lamp and the reference value for the fog lamp, which are preset in the pressure / flow rate determination unit, And can be configured to compare the measured values of the pressure gauge and the flow meter.

In the air permeability testing apparatus of an air cap for an automotive lamp according to the present invention, the pressure / flow rate determining unit detects the range of the measured values of the pressure gauge and the flow meter, so that the air cap for the automobile lamp, It can be detected automatically whether it is for a fog lamp. The pressure / flow rate determination unit may be configured to compare a preset reference value for the head lamp or a predetermined reference value for the fog lamp with the measured values of the pressure gauge and the flow meter according to the detection result. Thus, by using the air permeability testing equipment of the air cap for an automobile lamp according to the present invention, it is possible to inspect different air permeability standards of an air cap for an automobile head lamp and a fog lamp with one equipment

In addition, the air permeability test equipment of the air cap for an automobile lamp according to the present invention may further include other additional configurations as long as the technical idea of the present invention is not adversely affected.

The performance of the air cap for an automobile lamp for benchmarking can be evaluated by using the air permeability testing equipment of the air cap for an automobile lamp according to the present invention.

Further, in the air permeability test equipment of the air cap for an automobile lamp according to the present invention, since the air cap for an automobile lamp is assembled and tested for its air permeability, the air permeability of the membrane fabric itself It is possible to overcome the problem of the prior art that was only possible to test and to detect the air permeability criterion of the aircap for an assembled automobile lamp which is caused by various reasons such as an assembling defect occurring in the manufacturing process and adhesion of foreign materials to the membrane.

Also, in the air permeability testing apparatus of the air cap for an automobile lamp according to the present invention, the air cap for an automobile lamp can be mounted on a replaceable jig, so that it is possible to inspect various types / .

Further, by using the air permeability testing apparatus of the air cap for an automobile lamp according to the present invention, it is possible to inspect different air permeability standards of an automobile head lamp and a fog lamp air cap with one equipment.

1 is a view showing a schematic structure of an air cap for an automobile lamp.
FIG. 2 is a view showing a manner in which air in and out of the lamp is made to flow in and out of the air in the state where the air cap for an automobile lamp is mounted on the automobile lamp.
3 is a view showing the flow of air in the air permeability testing equipment of an air cap for an automobile lamp according to the present invention.
4 is a diagram showing the overall configuration of an air permeability testing apparatus for an air cap for an automotive lamp according to the present invention.
5 is a view showing a structure of a clamp cylinder included in an air permeability test equipment of an air cap for an automobile lamp according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

In order to clearly explain the present invention, a detailed description of parts that are not related to the present invention will be omitted, and the same constituent elements will be denoted by the same reference numerals throughout the entire specification. In addition, since the shapes and sizes of the respective components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to the illustrated shapes and sizes. That is, the specific shapes, structures, and characteristics described in the specification can be implemented by changing from one embodiment to another embodiment without departing from the spirit and scope of the present invention. It is to be understood that changes may be made without departing from the scope. Therefore, the following detailed description is not to be taken in a limiting sense, and the scope of the present invention should be construed as encompassing the scope of the appended claims and all equivalents thereof.

Fig. 3 shows the flow of air in the air permeability test equipment of an air cap for an automobile lamp according to the present invention.

First, air pressure of a specific pressure is formed using a known compressor or the like. The air pressure formed here may be, for example, 0.5 MPa.

The air of a specific pressure formed from the compressor enters the primary regulator 10 and is reduced to a predetermined pressure, for example, 0.1 MPa when exiting the primary regulator 10.

Air exiting the primary regulator 10 enters the secondary regulator 20 by providing a pressure gauge between the primary regulator 10 and the secondary regulator 20 so that the pressure of air exiting the primary regulator It is possible to check whether it is a predetermined pressure. The air entering the secondary regulator 20 can be depressurized to a lower pressure, for example 125 Pa, than when it exits the primary regulator, to provide a pressure corresponding to the test specification.

The air exiting the secondary regulator 20 passes through the switch 40. The function of the switch 40 is to supply the test product with air at a pressure that corresponds to a predetermined test specification that has passed through the secondary regulator 20. When the air cap for the automobile lamp to be tested for air permeability is mounted on the test jig 60, the test implement places the switch 40 in an OFF state, thereby allowing air that has passed through the secondary regulator 20 to be supplied to the test product Pass the test product through.

The pressure gauge 90 and the flow meter 100 may be installed in the passage through which the air passing through the switch 40 reaches the test product.

The pressure and flow rate measurement values measured by the pressure gauge 90 and the flow meter 100 in the flow path between the switch 40 and the test product are provided to the pressure / The pressure / flow rate determination unit 110 determines whether the flow rate measured under the air supply condition of the predetermined pressure falls within a preset numerical range.

If it is determined that the measured flow rate is within the preset numerical range, the pressure / flow rate determiner 110 outputs a result indicating that the test result is satisfied. If it is determined that the flow rate exceeds the preset numerical value range, The flow rate determination unit 110 outputs that the test result is not satisfied.

The air permeability test equipment of an air cap for an automobile lamp according to the present invention is characterized by inspecting different air permeability standards of an automobile head lamp and a fog lamp air cap with one equipment. For this, the pressure / flow rate determination unit 110 of the present invention can manually or automatically detect whether the air cap to be tested is for a head lamp or a fog lamp. Manual sensing is accomplished by the test person manually setting the head lamp and fog lamp. The test implementer inputs the fog lamp usage for the head lamp or the fog lamp to the pressure / flow rate determiner 110 of the apparatus by operating the changeover switch 140 to select either the head lamp or the fog lamp .

In accordance with the switching, the pressure / flow rate determiner 110 can switch between the measurement value and the reference value to be compared between the reference value for the head lamp and the reference value for the fog lamp. If the test performer positioning the switch 140 in the head lamp, the pressure / flow rate determination unit in the measurement and a target reference value compared to a reference pressure (for example, 125Pa) for example about 10.0ml / cm 2 · sec and out of the flow rate set to do. When the test operator places the changeover switch 1400 in the fog lamp, the pressure / flow rate determining unit 110 determines that the measured value and the reference value to be compared are about 0.20 ml / cm < 2 > Set the flow rate.

As described above, there is a difference of substantially several tens of times between the reference value for the head lamp and the reference value for the fog lamp. Therefore, even if the configuration for manually switching the reference value between the head lamp and the fog lamp is omitted as described above, the pressure / flow rate determination unit 110 can detect the reference value Can be used for head lamps or for fog lamps.

For example, the pressure / flow rate determination unit 110 automatically applies the reference value for the head lamp when the measured flow rate is 5.0 ml / cm 2 · sec or more, and when the measured flow rate is 1.0 ml / cm 2 · sec or less, It can be set to automatically apply the numerical value. When the measured flow rate falls within a range of, for example, 1.0 ml / cm 2 sec and 5.0 ml / cm 2 sec, the pressure / flow rate determiner 110 may be set to output an error.

4 is a diagram showing the overall configuration of an air permeability testing apparatus for an air cap for an automotive lamp according to the present invention. Although the illustration of the compressed air flow path from the compressor to the test product is omitted in Fig. 4, the flow of compressed air between the components shown in Fig. 4 will be clearly understood by those skilled in the art with reference to Fig.

The compressed air formed in the compressor is firstly reduced in pressure by the primary regulator (10). The primary decompressed compressed air is directed to the secondary regulator 20 where it is secondarily reduced in pressure. The secondary depressurized pressure is set according to the test criteria as the final pressure to be applied to the ventilation test.

The compressed air, which is secondarily reduced in pressure in the secondary regulator 20, is supplied to a switch 40 provided in the control box 30. The switch 40 provides the second decompressed compressed air of the pressure set in accordance with the test criteria to the test housing 50 according to the operation of the test performer. On the test housing 50, a jig 60 for accommodating an air cap for an automobile lamp is provided. The jig (60) is detachable from the test housing (50). The jig 60 can be prepared in various ways so as to correspond to an air cap for automobile lamps of various shapes and sizes. The test implementer can easily select the jig 60 corresponding to the air cap for the automotive lamp to be tested and easily install the test jig 50 in the test housing 50. The jig 60 of the test housing 50 may be provided with a cover for the test to be tested or an air cap for an automobile lamp to be tested may be provided with a cover including the cover.

When the compressed air that is secondarily reduced in pressure by the operation of the switch 40 is provided below the air cap for an automobile lamp housed on the jig 60, the pressure of the compressed air acts as a force for pushing up the air cap upward. Therefore, the air cap for the automobile lamp housed in the jig 60 of the test housing 50 can be detached from the jig 60 during the test.

In order to prevent this, the air permeability test equipment of the air cap for an automobile lamp of the present invention is provided with a clamp cylinder (70). The clamp cylinder 70 is movable upward or downward by the up-down switch 80. [ When the test person lifts the clamp cylinder 70 by actuating the vertical switch 80 with the air cap for the automobile lamp installed on the jig 60 of the test housing 50, Contacts the upper part of the air cap for an automobile lamp installed on the jig 60 and presses the air cap for the automobile lamp downward. In this state, when the test operator activates the switch 40, the second decompressed compressed air flows out through the air cap for the automobile lamp mounted on the jig 60 of the test housing 50 to the atmosphere, Even if the air cap for an automobile lamp mounted on the jig 60 is pressed upward, it is not separated from the jig 60 by the downward pressing force of the clamp cylinder 70. [

Although not shown in FIG. 4, the pressure gauge 90 and the flow meter 100 are provided in the flow path of the compressed air from the switch 40 to the air cap for the automobile lamp, which is mounted on the jig 60 of the test housing 50, Respectively.

The pressure value and the flow rate value measured from the pressure gauge 90 and the flow meter 100 are supplied to a pressure / flow rate determination unit 110 that can be accommodated in the control box 30. The pressure / flow rate determiner 110 determines whether the measured pressure value and the flow rate value are proper or not by comparing the reference value with a preset reference value, and outputs the result to the lamp 120 and the display 130. If the pressure / flow rate determining unit 110 determines that the measured air pressure of the air cap for the automobile lamp falls within the defective range as a result of comparing the measured pressure value and the flow rate value with preset reference values, The lamp 120 is turned on to indicate the failure of the air cap for the test lamp to the test person. In addition, information such as the measured pressure value and the flow rate value may be displayed on the display 130 connected to the pressure / flow rate determiner 110 and installed on the control box 30. The pressure value and the flow rate value measured during the test separately from the display on the display 130 can be stored in the storage device connected to the pressure / flow rate determiner 110, and the past measured value stored according to the operation of the test performer Or may be displayed on the display unit 130. Data can also be moved to the outside of the breathability test equipment for an automobile lamp of the present invention by using well-known data moving means.

As described in connection with the embodiment of FIG. 3, the changeover switch 140 may be connected to the pressure / flow rate determiner 110. The changeover switch 130 may switch the reference value preset in the pressure / flow rate determiner 110 between the headlamp reference value and the fog lamp reference value, and the pressure / flow rate determiner 110 May be omitted if they have the automatic reference setting function as described in connection with the embodiment of Fig.

5 is a view showing a structure of a clamp cylinder 70 included in an air permeability test equipment of an air cap for an automobile lamp according to the present invention. 4, the clamp cylinder 70 can be raised or lowered by the up / down switch 80. When the clamp cylinder 70 is lowered, It shall be able to contact the top of the air cap and press it downward.

The clamp cylinder 70 shown in Fig. 5 is in an elevated state in contact with the air cap for an automotive lamp and not pressing it downward. A piston (150) is mounted on the lower end of the clamp cylinder (70).

As described above, the jig 60 of the test housing 50 may be provided with an air cap for an automobile lamp to be tested, with its cover being removed, and provided with a cover. May be provided. An air cap for an automobile lamp having a structure in which an air cap for an automobile lamp is provided to the jig 60 in a state where the cover is removed or compressed air having passed through the membrane is discharged through the cover as it is, When the cover 150 is provided to the jig 60 with the cover assembled, the piston 150 of the clamp cylinder 70 closes the flow path of the compressed air in the process of pressing the air cap for the automobile lamp provided for the test from the upper side to the lower side , The pressure on the flow path rises, making it impossible to achieve the objective of the present test equipment to measure the flow rate under a predetermined prescribed pressure.

Therefore, in the lower surface of the piston 150 of the clamp cylinder 70 provided in the air permeability testing apparatus of the air cap for an automobile lamp of the present invention, compressed air passing through the air- An entrance is provided. An O-ring made of a rubber material may be provided on the lower surface of the piston 150 to prevent the compressed air from being seized while the piston 150 is in contact with the air cap for an automobile lamp mounted on the jig 60.

The compressed air introduced through the compressed air inlet formed on the lower surface of the piston 150 may be discharged through the compressed air outlet formed on the side of the piston 150, Quot; """< / RTI >

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Accordingly, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention.

10: Primary regulator
20: Secondary regulator
30: Control box
40: Switch
50: Test housing
60: jig
70: Clamp cylinder
80: Up and down switch
90: Pressure gauge
100: Flowmeter
110: pressure / flow rate judging unit
120: lamp
130: Display
140: Conversion switch
150: piston

Claims (5)

It is the air permeability test equipment of air cap for automobile lamp,
A regulator for lowering the pressure of the compressed air provided by the compressor to a prescribed test pressure,
A switch connected to the regulator,
A test housing in which compressed air having passed through a regulator is provided according to an operation of the switch;
A jig provided in the test housing,
A pressure gauge provided in a flow path between the switch and the test housing for measuring a pressure of the compressed air,
A flow meter provided in the flow path and measuring a flow rate of the compressed air,
A pressure / flow rate determiner for providing measured values of the pressure gauge and the flow meter,
And a piston which can be raised or lowered by a vertical switch and which is in contact with an upper portion of an air cap for an automobile lamp mounted on the jig when it is lowered and presses downward,
The pressure / flow rate determining unit compares the measured values of the pressure gauge and the flowmeter with predetermined reference values to determine whether the air cap for the automotive lamp is defective, outputs the result to the lamp 120 or the display 130,
Wherein a compressed air inlet is formed on a lower surface of the piston of the clamp cylinder, a compressed air outlet is formed on a side surface of the piston, and a compressed air passage is formed between the compressed air inlet and the compressed air outlet,
The jig is detachable from the test housing and is selected to correspond to the shape and size of the air cap for an automotive lamp to be tested and the air cap for an automotive lamp to be tested is mounted on a jig And the inner breathable sheet is not separated,
Wherein the changeover switch is connected to the pressure / flow rate determination unit and selects either the headlamp reference value or the fog lamp reference value, which is preset in the pressure / flow rate determination unit, / The flow rate determining section is configured to compare the selected reference value with the measured values of the pressure gauge and the flow meter,
Air permeability test equipment of air cap for automobile lamp.
The air conditioner of claim 1, wherein the regulator includes a primary regulator for lowering the pressure of the compressed air provided by the compressor to a first level, and a secondary regulator for lowering the pressure of the compressed air from the primary regulator to a prescribed test pressure Air cap test equipment for air lamps for automobile lamps.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101774734B1 (en) 2017-03-16 2017-09-04 재단법인 한국기계전기전자시험연구원 Test system and method for heat meters
WO2022010293A1 (en) * 2020-07-08 2022-01-13 주식회사 엘지에너지솔루션 System for measuring shutdown temperature and meltdown temperature of separator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09126986A (en) * 1995-10-30 1997-05-16 Japan Synthetic Rubber Co Ltd Air permeability measurement method and device
JP2007178139A (en) * 2005-12-27 2007-07-12 Susumu Yoshida Air permeability tester
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JPH09126986A (en) * 1995-10-30 1997-05-16 Japan Synthetic Rubber Co Ltd Air permeability measurement method and device
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KR101774734B1 (en) 2017-03-16 2017-09-04 재단법인 한국기계전기전자시험연구원 Test system and method for heat meters
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