KR20180056206A - Jig for testing waterproof - Google Patents

Abstract

The present invention relates to a jig for testing air tightness that firmly maintains a sealing state between a lower jig and an upper jig, which are used for testing the air tightness of various electronics using variations in pressure, only by low pressure, thereby achieving a compact jig and improving productivity and accuracy of the air tightness test, as well as conveniently use of the jig. The jig includes: a lower jig having a table for an object to be tested, and a top surface of the table being opened; an upper jig moving up and down to cover the table; and a pressing member for forcibly maintaining a sealing state of the upper jig. The pressing member has a fitting member protruding from both sides of the upper jig, a pressing piece which is able to move back and forth on both sides of the lower jig, and is formed with a fitting groove, in which the fitting member is fitted into the fitting groove when the pressing piece moves forward, while the fitting member comes out from the fitting groove when the pressing piece moves backward, and a cylinder for forming the pressing piece.

Description

[0001] JIG FOR TESTING WATERPROOF [0002]

The present invention relates to a jig for airtightness testing for various electronic products, and more particularly, to a jig for airtightness testing of various electronic products, in which a sealed state of a lower jig and an upper jig, which are used for checking airtightness of an object to be inspected, A lower jig having an inspection object cushion having an upper surface opened for easy use, while achieving miniaturization of the jig and improving the productivity and accuracy of the airtightness inspection through miniaturization of the jig; An upper jig which is opened and closed while vertically operating to cover the cushion portion; And a pressing means for forcibly maintaining the closed state of the upper jig, wherein the pressing means comprises: a fitting member protruding from both sides of the upper jig; And a cylinder for moving the pressing piece linearly in the forward and backward directions. The present invention relates to a jig for airtightness inspection.

With the development of IT technology, electronic products such as smart phones, tablet PCs and various digital cameras have been miniaturized, and portable and easy-to-use products are being released.

As the portability of electronic products becomes more convenient, the use of electronic products in real life has increased, and the environment in which electronic products can be used has diversified.

Accordingly, in order to prevent damage or breakage due to leakage of water when using various electronic products, a product with a waterproof function has been increasingly launched, and in order to meet various requirements for waterproof function of electronic products Devices are being developed.

The inventor of the present invention has also proposed a technique for inspecting the airtightness of various electronic products, such as the registered utility model No. 20-0475405, the registered patent No. 10-1197704, the registered patent No. 10-1598849, the registered patent No. 10-1442072 Have been registered.

In order to inspect the airtightness of various electronic products, the above-mentioned prior arts have proposed a method of inspecting airtightness of various electronic products by inserting an object to be inspected into a kind of chamber sealed inside and outside, filling compressed air into the chamber, Pressure change or the like, and to inspect the airtightness of the object to be inspected.

In the case of the airtightness testing apparatus, since the accuracy of the airtightness test can be improved if the sealing of the chamber in which the object to be inspected is stably maintained, it is possible to easily hold the object to be inspected and securely seal the inside and the outside of the chamber Technology is needed,

For this purpose, most of the airtightness testing apparatuses have sealed the chamber by pressing the lid covering the crotch portion to a predetermined pressure or higher by using a cylinder or the like.

Representative of Patent No. 10-1442072 will be described with reference to FIG. 4 (hereinafter referred to as "FIG. 1 to FIG. 3 for explaining the present invention and FIG. 4 for explaining a conventional technique" The upper cover 20 is pushed through the cylinder or the like to seal the holding portion 35 in a state where the inspection object is placed inside the lower jig body 10, The pressure of the cushion portion is prevented from leaking, and the pressure change inside the cushion portion is detected to check the airtightness.

However, the method of maintaining the hermeticity of the chamber by pushing the piston of the cylinder directly downward from the upper cover 20 leads to an increase in the size of the cylinders inevitably used, which not only increases the manufacturing cost of the testing apparatus,

There is a problem in that the inspection apparatus itself becomes large in size and is structured to be unsuitable for simultaneously inspecting the objects to be inspected by using a plurality of chambers.

That is, depending on the kind of the object to be inspected, not only the pressure inside the chamber required for the airtightness inspection is different but also the capacity available for the cylinder itself to resist hermeticity of the chamber against the strong pressure inside the chamber is large The cylinder itself becomes unnecessarily large, which makes it inconvenient to manufacture and use, and also limits the number of chambers that can be used.

In addition to the cylinder, a high output is required even for various equipments such as a pneumatic or hydraulic pressure supplying means for providing a hermetic pressure of the cylinder. In spite of the convenience of the airtightness inspection through the pressure change, There are many restrictions.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a cylinder bore having a small cylinder, A lower jig provided with an inspection target portion having an upper surface opened so that the hermeticity between the upper jig can be firmly maintained; An upper jig which is opened and closed while vertically operating to cover the cushion portion; And a pressing means for forcibly maintaining the closed state of the upper jig, wherein the pressing means comprises: a fitting member protruding from both sides of the upper jig; And a cylinder for moving the pressing piece linearly in the forward and backward directions. The object of the present invention is to provide a jig for airtightness inspection, comprising a pressing piece having a fitting groove in which the fitting member is fitted and moved back during a forward movement, do.

In order to facilitate the opening and closing of the upper jig, the upper jig is hinged to the lower jig so that the upper jig is pivotally opened and closed, and the opening and closing operations of the upper jig are interlocked by the pressing means. An interlocking unit comprising a protruding pressing member and a guide bar which is connected to the upper jig so as to extend rearward and which is pressed while the upper surface is in contact with the pressing member and which is formed by a curved surface section rounded from the straight line section to the rear, And an object of the present invention is to provide a jig for airtightness inspection.

Further, the present invention provides a gas-tightness inspection jig including a roller-like pressing member and a roller-type shim member coupled to idle so as to secure frictional force between the members by the pressing means and the interlocking means, And an object of the present invention is to provide a device.

In order to achieve the above-mentioned object, according to the present invention,

A lower jig provided with an inspection target portion having an upper surface opened;

An upper jig which is opened and closed while vertically operating to cover the cushion portion; And

And a pressing means for forcibly holding the closed state of the upper jig,

Wherein the pressing means comprises:

A fitting member protruding from both side surfaces of the upper jig,

A pressing piece provided on both sides of the lower sheet so as to move linearly back and forth and having a fitting groove in which the fitting member is fitted and moved away from the fitting member during backward movement,

And a cylinder for linearly moving the pressing piece back and forth.

In the jig for airtightness inspection according to the present invention,

The upper jig is hinged to the lower jig and is pivotally opened and closed,

And an interlocking means for automatically opening and closing the upper jig when linearly moving the pressing piece back and forth,

Wherein the interlocking means comprises:

A pressing member protruding from the inner surface of the pressing piece,

And a curved surface section connected to the upper jig by extending from the upper jig to the upper surface and being pressed while the pressing member is in contact with the upper surface, the curved surface section being rounded to the upper side in the straight section from the front section.

Further, in the jig for airtightness inspection according to the present invention,

Wherein the pressing member is a roller-shaped pressing member joined to rotate freely in the pressing piece,

And the shim member is a roller type shim member coupled to idle in the upper jig.

 The jig for airtightness inspection according to the present invention is a jig for airtightness inspection which can be removed from a hermeticity holding method of an antechamber using a conventional upper straight cylinder and is provided with an opening and closing direction of an upper jig It is possible to firmly maintain the airtightness of the crotch portion while resisting the strong internal pressure even with a small pressure of the cylinder. By reducing the usable capacity required for the cylinder, it is possible to achieve miniaturization of the cylinder, It is not only convenient to make and use the inspection jig device but also to increase the number of usable tests due to miniaturization and to improve the productivity of the airtightness inspection work.

The jig for airtightness inspection according to the present invention is a jig for airtightness inspecting, which is automatically formed by interlocking the opening and closing of the upper jig by using a cylinder. Even when the opening / closing direction of the upper jig is different from the pressure acting direction of the cylinder, The upper jig can be opened and closed and the pressurizing means can be hermetically held, and operational stability can be ensured by designing a mechanism that can easily transfer the operating directions of the different components and transmit the pressure.

1 is an external perspective view of a jig for airtightness inspection according to the present invention.
Fig. 2 is a first exploded perspective view of Fig. 1; Fig.
3 is a cross-sectional view for explaining the operation of the jig device for testing road-tightness according to the present invention.
4 is a cross-sectional view showing the structure of a jig for airtightness inspection according to the related art.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

 In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

In the following description of the airtightness testing jig device according to the present invention, for the sake of convenience, an unambiguous approximate direction reference will be described with reference to FIG. 1. When the direction in which the cylinder 40 is provided is set rearward, The direction of gravity acting on the basis of the viewing direction is set as the downward direction, and the direction is specified according to this standard, unless otherwise specified in the detailed description and claims of the invention relating to other drawings. do.

Hereinafter, a jig for airtightness inspection according to the present invention will be described with reference to the accompanying drawings.

The present invention relates to a jig for airtightness inspection in which an object to be inspected is placed in order to check the waterproof function, that is, the airtightness, of all or a part of various electronic products such as a smart phone, a tablet PC,

As shown in Fig. 1, which is an external perspective view of the present invention and Fig. 2, which is a first exploded perspective view, and Fig. 3, which is a sectional view for explaining the operation of the present invention, a lower jig 10, an upper jig 20, (P), and interlocking means (L).

The lower jig 10 is fixed to the base plate 11 and has a holding portion 12 on which an object to be inspected is placed.

The upper face of the face portion 12 is opened, and the inspection object is received through the opening portion,

A plurality of such lower jigs 10 are provided on a work table of the airtightness testing apparatus so that a plurality of objects to be inspected can be inspected for airtightness at the same time.

The bottom surface of the lower jig 10 may have a different shape and / or structure depending on the type and size of the object to be inspected for airtightness. The lower jig 10 may be detachably attached to the base plate 11 (Or the base plate 11 itself can be detachably attached), so that the lower jig 10 can be used in accordance with a variety of objects to be inspected.

1 and 2, reference numeral 13 denotes a nozzle unit for performing air tightness inspection by supplying compressed air into the inside of the notch portion 12, and a pressure change in the inside of the notch portion 12 And various sensors (not shown) for detecting the confidentiality of the test metabolites are provided.

The upper jig 20 is vertically operated at the upper portion of the lower jig 10 to open and close the lower portion of the lower jig 10 while covering the lower portion of the lower jig 10. Thus,

The upper jig 20 is kept closed by the pressing means P in a state where the upper jig 20 covers the lower jig 10 so that the pressure in the holding portion 12 leaks to the outside of the jig ≪ / RTI >

The upper jig 20 includes an airtight portion 21 that seals the opening of the upper surface of the mouth portion 12 in accordance with the shape and structure of the mouth portion 12.

In this case, the upper and lower jig 20 and the lower jig 10 may have various vertically open and close structures,

The upper jig 20 is hinged to the rear side of the lower jig 10 so that the upper jig 20 can be closed and the upper jig 20 can be opened and closed using only one cylinder 40 It is more preferable that the upper jig 20 is vertically pivotally opened and closed with the coaxial shaft 22a as an axis.

Next, the pressing means P for covering the inner surface portion 12 of the lower jig 10 and forcibly maintaining the closed state of the upper jig 20 will be described.

The pressing means (P)

A fitting member 23 protruding from both sides of the upper jig 20,

With the fitting member 23 fitted in the forward movement of the lower jig 10 and having the fitting groove 31 in which the fitting member 23 is detached during the backward movement, The pieces 30 and

And a cylinder 40 for linearly moving the pressing piece 30 back and forth.

The shim 23 is provided at the front ends of both side surfaces of the upper jig 20 and rotates up and down together with the upper jig 20,

And a roller type shim member 23 coupled to the upper jig 20 so as to rotate back and forth around the rotary shaft as an axis.

The rear ends of the pressing pieces 30 are connected to each other by the connecting bar 32 and are linearly moved back and forth through the operation of the cylinder 40 disposed on the rear side of the connecting bar 32. [

These pressing pieces 30 are linearly moved back and forth along the LM guide 14 fixed to the upper surface of the base plate 11 and both sides of the lower jig 10, Is a guide block of the pressing piece 30 slidingly coupled to the LM guide 14 for guiding the forward and backward linear movement of the pressing piece 30.

The fitting groove 31 is formed in the inner surface of the front end portion of the pressing piece 30 so as to be recessed and open on the front face. Or the fitting member 23 is disengaged while being separated by the opening of the fitting groove 31. The fitting member 23 is inserted into the opening of the fitting groove 31,

The cylinder 40 is connected to a pneumatic or hydraulic pressure and more preferably to a pneumatic pressure so that the piston 41 connected to the pressing piece 30 is moved forward and backward to move the pressing piece 30 forward and backward linearly .

When the cylinder 40 is operated and the piston 41 is advanced in the state in which the upper jig 20 is closed, the pressing member 30 is moved forward together with the engaging member 23 engaged with the fitting groove 31 So that the closed state of the upper jig 20 is maintained,

When the piston 41 of the cylinder 40 is retracted, the pushing piece 30 moves backward together, and the fitting member 23 is disengaged from the fitting groove 31 to open and close the upper jig 20 .

Next, an interlocking means (L) for automatically opening and closing the upper jig (20) when the pressing piece (30) is linearly moved back and forth will be described.

The interlocking means (L)

A pressing member 34 protruding from the inner side surface of the pressing piece 30,

The pressing member 34 of the pressing piece 30 is connected to the upper side of the upper jig 20 at both sides of the hinge engaging part 22 provided with the turning shaft 22a of the upper jig 20, And a guide bar 24 composed of a front side linear section 24a and a curved section 24b connected to round the rear section of the linear section 24a.

Here, the curved surface section 24b is connected so as to be rounded to the rear upper side, in which the upper surface of the curved surface section 24b is curved concavely in an arc shape corresponding to the rotation path of the upper jig 20 And,

The length of the straight section 24a and the curved section 24b may vary depending on the linear movement distance of the pressing piece 30 and the rotation angle of the upper jig 20. [

In this guide bar 24, a straight section of a predetermined length may be further connected to the rear end of the curved section 24b.

The pressing member 34 is provided at the rear end of the inner surface of the pressing piece 30 and linearly moves back and forth together with the pressing piece 30,

And contacts the upper surface of the guide bar 24 to press the straight section 24a and the curved section 24b downward.

The guide bar 24 is pressed downward by the urging member 34 so that the sealing of the upper jig 20 is maintained when the urging member 34 presses the straight section 24a, The upper jig 20 is vertically pivotally opened and closed about the rotary shaft 22a when the upper jig 20 contacts and presses the straight section 24a or the curved section 24b.

That is, when the pressing member 34 that moves linearly back and forth together with the pressing piece 30 passes the straight line section 24a, the linear section 24a of the guide bar 24 is pushed so that the upper jig 20 rotates downward , The annular portion 12 is closed and the sealed state is maintained,

When the pressing member 34 passes the curved surface section 24b, the curved surface section 24b of the guide bar 24 is pushed to open the holding portion 12 while the upper jig 20 rotates upward.

Hereinafter, the overall operation of the airtightness testing jig apparatus having the above-described configuration will be described in detail.

First, in a state in which the piston 41 of the cylinder 40 is retracted, the pressing piece 30 is moved back together and the roller-type fitting member 23 is disengaged from the fitting groove 31, Shaped pressing member 34 presses the rear end portion of the curved surface section 24b of the guide bar 24 so that the upper jig 20 rotates upward and is kept open.

In this state, when the airtightness test is started after the object to be inspected is placed on the inner jig 10 of the lower jig 10, as the piston 40 is operated and the piston 41 advances, the pressing piece 30 Move forward together.

As the pressing piece 30 advances and the roller type pressing member 34 contacts the linear section 24a beyond the front end of the curved section 24b and presses the guide bar 24 downward, 20 are rotated downward to close the notch portion 12,

The pressing piece 30 continues to move forward by a certain distance in a state in which the roller type pressing member 34 enters the straight section 24a and the upper jig 20 is closed and the roller type fitting member 23 And inserted into the fitting groove 31 to be fitted.

In this case, the fitting groove 31 is formed with a curved surface guide portion 31a which is connected to the upper front end portion where the roller type fitting member 23 makes contact, As shown in FIG.

When the pushing piece 30 is advanced, the compressed air is supplied into the notched portion 12 to increase the inner pressure of the notched portion 12. Since the fittable member 23 is fitted in the fitting groove 31, The sealed state of the jig 20 is maintained and the pressure inside the jig is prevented from leaking to the outside.

After completing the airtightness test using the pressure change through the supply of the compressed air, the high pressure in the inner cylinder 12 is released (the pressure relief process may not be separately performed depending on the case) And as the piston 41 moves backward, the pressing piece 30 moves back together.

The roller type fitting member 23 is released from the fitting groove 31 while the pressing member 30 moves backward and the roller type pressing member 34 passes the straight section 24a so that the upper jig 20 is opened When it is ready,

The upper jig 20 is pushed downward by the pressing member 30 while the pressing member 30 continues to move backward and the roller-like pressing member 34 contacts the rear end of the curved section 24b while pressing the guide bar 24 downward. The holding portion 12 is opened while the turning shaft 22a of the engaging portion 22 is turned upward by the shaft,

When the opening of the upper jig 20 is completed by the roller type pressing member 34, the worker replaces the inspection object in the inside of the guide portion 12 and repeats the above airtightness check.

The upper jig 20 is opened and closed vertically as described above while the operating pressure of the cylinder 40 acts in the forward and backward directions, The available capacity of the necessary cylinder 40 is reduced so that the sealed state of the upper jig 20 is firmly maintained even with only a small pressure of the small cylinder 40 so that the pressure in the jig 12 leaks to the outside of the jig .

4, when the opening and closing directions of the upper jig and the pressure acting direction of the cylinder (the operating direction of the piston) are the same in the vertical direction, the working pressure of the cylinder, which resists the rise in the internal pressure of the seat, The cylinder to be used has to be made unnecessarily large,

Since the opening and closing directions of the upper jig 20 and the pressure acting direction of the cylinder 40 are formed differently from each other, the pressure of the cylinder 40 only affects the forward and backward linear movement of the pressing piece 30, Since the sealing of the upper jig 20 is maintained only by the engagement structure of the fitting member 23 and the fitting groove 31 in the state in which the piece 30 is moved forward, The sealing of the upper jig 20 can be strongly maintained, and the airtightness test can be performed stably.

The miniaturization of the cylinder 40 makes it possible to reduce the size of the entire jig device, thereby reducing the manufacturing cost and making it easy to manufacture, and making the jig device easy to use,

As the total volume of the jig device is reduced, the number of jig devices that can be installed relative to a certain area is increased, so that the number of objects to be inspected at the same time increases, thereby contributing to improvement in productivity of the airtightness inspection work .

Although the opening and closing directions of the upper jig 20 and the pressure acting direction of the cylinder 40 are different from each other through the interlocking means L comprising the roller type pressing member 34 and the guide bar 24, Closing of the upper jig 20 and sealing and holding of the pressurizing means P are performed simultaneously with only the cylinder 40 (the cylinder 40), the airtightness testing apparatus can be further downsized, and all processes except for storing the inspection object are automated, There is a convenient effect.

While the present invention has been described with reference to the accompanying drawings, it should be understood that various changes, substitutions and alterations can be made by those skilled in the art without departing from the spirit and scope of the invention. Substitutions should be construed as falling within the scope of protection of the present invention.

10: lower jig 11: base plate
12: face portion 13: nozzle portion
14: LM guide 20: Upper jig
21: airtight portion 22: hinge coupling portion
22a: Pivot shaft 23: Roller-type splinter member
24: guide bar 24a: straight line section
24b: Curved section 30:
31: fitting groove 31a: curved surface guide portion
32: connecting bar 33: guide block
34: roller type pressing member 40: cylinder
41: Piston P: Pressurizing means
L: Interlocking means

Claims (4)

A lower jig provided with an inspection target portion having an upper surface opened;
An upper jig which is opened and closed while vertically operating to cover the cushion portion; And
And a pressing means for forcibly holding the closed state of the upper jig,

Wherein the pressing means comprises:
A fitting member protruding from both side surfaces of the upper jig,
A pressing piece provided on both sides of the lower sheet so as to move linearly back and forth and having a fitting groove in which the fitting member is fitted and moved away from the fitting member during backward movement during forward movement,
And a cylinder for linearly moving the pressing piece back and forth.
The method according to claim 1,
The upper jig is hinged to the lower jig and is pivotally opened and closed,
And an interlocking means for automatically opening and closing the upper jig when linearly moving the pressing piece back and forth,

Wherein the interlocking means comprises:
A pressing member protruding from the inner surface of the pressing piece,
And a guide bar which is connected to the upper jig by extending from the upper jig to press the upper surface of the pressing member in contact with the upper surface of the upper jig and connected to the front side linear section and the curved surface section rounded rearward upward from the linear section. Jig device.
3. The method of claim 2,
Wherein the pressing member is a roller type pressing member which is coupled to rotate freely in the pressing piece.
4. The method according to any one of claims 1 to 3,
Wherein the shim member is a roller-type shim member coupled to idle in the upper jig.

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