JP5127320B2 - Mounting jig for ring packing - Google Patents

Description

  The present invention relates to a mounting jig for mounting a ring-shaped packing used for waterproofing various devices on a mounting portion.

  For example, in a mobile phone in various devices, an external memory, an electronic camera, an earphone, or the like may be used as appropriate. Therefore, the portable telephone is provided with a connector for these external devices. On the other hand, since a portable telephone is used outdoors and is exposed to rain or submerged, a waterproof mechanism is applied to the connector portion to protect electronic components such as an internal electric circuit. As this waterproof mechanism, one that compresses a ring-shaped packing attached at the same time as covering the connector portion with a lid is used.

  In order to obtain a reliable sealing state in this way, it is important that the ring-shaped packing is attached by being uniformly stretched. If the ring-shaped packing is partially extended excessively, a gap is formed in that portion, and a reliable sealing state cannot be obtained. On the other hand, where the ring-shaped packing is not sufficiently stretched partially and has a large diameter, this portion protrudes from the normal position of the mounting portion, causing problems such as floating the lid.

  Conventionally, as disclosed in the following Patent Document 1 (Japanese Patent Laid-Open No. 7-266221), an O-ring corresponding to a ring-shaped packing is locally extended or attached in a twisted state. A technique to avoid this has been proposed. This is to fit the O-ring into an O-ring mounting groove formed on the bottom surface of the pressure plate and cannot be seen directly.

That is, in the technique disclosed in Patent Document 1, in order not to cause local elongation or the like, a mounting plate is arranged facing the bottom surface of the pressure plate, and the upper surface of the mounting plate has the same diameter as the O-ring mounting groove. An O-ring fitting groove is provided. To install the O-ring in the O-ring mounting groove, place the O-ring in the O-ring fitting groove, lower the pressure plate and press the mounting plate, and move the O-ring from the O-ring fitting groove to the O-ring mounting groove. It is intended to be attached.
JP 7-266221 A (paragraph [0006] to paragraph [0012])

  However, when the ring-shaped packing is mounted on the mounting portion formed by the bank, the ring-shaped packing is mounted on the outer side of the bank, so that the ring-shaped packing needs to be greatly extended once. For this reason, it is impossible to apply a conventional technique in which the O-ring fitting groove and the O-ring mounting groove disclosed in Patent Document 1 face each other and the O-ring is shifted.

  Therefore, when the ring-shaped packing is mounted on the mounting portion formed by the bank, a method of mounting the ring-shaped packing on the mounting portion while extending the ring packing by hand is unavoidable. For this reason, it has been difficult to mount the ring packing in a uniform stretched state. In particular, when a ring-shaped packing having a small diameter is used, it is extremely difficult to mount it in a preferable state.

  Accordingly, the present invention has been made in view of the above problems, and a mounting jig for mounting a ring-shaped packing in a uniform stretched state on a mounting portion formed by a bank used for waterproofing various devices. The purpose is to provide.

In order to solve the above-mentioned problem, the invention of the ring-shaped packing mounting jig according to claim 1 of the present application provides a ring-shaped packing mounting jig for mounting the ring-shaped packing on the mounting portion. An extension part that forms an insertion part to be inserted into the ring of the packing at one end and has a cross-sectional area larger than the area of the mounting part formed by the bank on which the ring packing is mounted, and expands the ring packing Is formed at the other end , and a column portion having a continuously increasing cross-sectional area is formed between the one end and the other end, and the end surface of the other end is fitted into a recess formed inside the bank.
Protruding portions are provided, and when the concave portion and the protruding portion are fitted, a plurality of locking claws formed on the bank are engaged and integrated .

Moreover, the invention of the ring-shaped packing mounting jig according to claim 2 of the present application is characterized in that the protruding portion is fitted into the concave portion formed in an elliptical shape .

Further, the invention of the ring-shaped packing mounting jig according to claim 3 of the present application is characterized in that the insertion portion, the column portion, and the extension portion have a circular or elliptical cross section.

  The present invention achieves the following excellent effects by the above-described solving means.

That is, according to the ring-shaped packing mounting jig according to the first and second aspects of the present invention, the ring-shaped packing is inserted into one end of the mounting jig by inserting the insertion portion into the ring of the ring-shaped packing. It is attached to the side, and then can be gradually and uniformly expanded by moving in the direction of the other end.

  And in the state which applied the other end to the mounting part, since the ring-shaped packing located in the expansion part is expanded larger than the area of a mounting part, it mounts | wears as it is from the bank outer side. Therefore, since the ring-shaped packing is mounted on the mounting portion without any unevenness of expansion, the ring-shaped packing is uniformly compressed over the entire region, and sealing at the mounting portion is ensured. Moreover, since an excessive compression state does not partially occur, deterioration of the sealed state does not occur due to secular change.

Moreover, since the the pressure lid attachment jig by fitting the collision detecting portion inside the recess of the bank can be integrally mounted in the pressure cover from dilates the ring packing in attachment jig The continuous work to attach to the part becomes easy.

Moreover, according to the jig for mounting the ring-shaped packing of the invention according to claim 3 of the present application, when the ring-shaped packing is expanded by moving the insertion portion, the column portion, and the expansion portion, the insertion portion, the column, Since the cross section of the part and the extension part is circular or elliptical , it is easy to uniformly extend the part. As a result, the ring-shaped packing mounted on the mounting portion has no unevenness in the extended state, and the sealed state is ensured.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiment shown below exemplifies an embodiment for embodying the technical idea of the present invention, and is not intended to specify the present invention to this embodiment. It is equally applicable to other embodiments within the scope of the claims.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a mounting jig with an insertion portion inserted into a ring of a ring-shaped packing in the embodiment, and FIG. 2 shows two adjacent connector portions applied to the embodiment. 3 is a perspective view showing a connector portion sealed with the ring-shaped packing in FIG. 2, FIG. 4 is a perspective view showing a pressure lid covering the connector portion in FIG. 3, and FIG. FIG. 6 is a perspective view showing a state in which the mounting jig and the pressure lid in the embodiment are integrated; FIG. 6 is a side view showing a state in which the mounting jig and the pressure lid in the embodiment are integrated; It is the sectional view on the AA line of FIG.

  FIG. 1 shows a mounting jig 1, which is formed in a cylindrical shape as a whole, and has an insertion portion 10 formed at one end for insertion into the ring of a ring-shaped packing 2, and a ring An expansion part 11 formed at the other end with a thickness that expands the cylindrical packing 2 and a column part 12 formed in a shape in which the cross-sectional area continuously increases between the insertion part 10 and the expansion part 11 Has been.

  FIG. 2 shows a portable telephone 3 to which the ring-shaped packing 2 is applied. The ring-shaped packing 2 is attached to a pressure lid 5 that covers the connector portion 4 provided on the side surface of the portable telephone 3.

  As shown in detail in FIG. 3, the connector portion 4 is formed on the outer side of the connector recess 40 formed in an elliptical shape, the connector 41 disposed in the connector recess 40, and the connector recess 40. And a guide hole 42. The connector portion 4 is always covered with the pressure lid 5, but an external device can be connected to the connector 41 by removing the pressure lid 5.

  As shown in detail in FIG. 4, the pressure lid 5 is formed on an elliptical bank 50 that is provided on the back surface and is fitted into the connector recess 40, and on the outer peripheral surface of the bank 50. The groove 51 for positioning the ring-shaped packing 2 and the guide pin 52 inserted into the guide hole 42 are configured. Here, a mounting portion 53 for mounting the ring-shaped packing 2 is formed by the bank 50 and the groove 51.

  Further, a bulging portion 54 that engages with a concave portion (not shown) formed in the bottom of the guide hole 42 is formed at the tip of the guide pin 52. Further, the bank 50 is formed with locking claws 55 at a plurality of locations, and the connector recess 40 is formed with an engagement notch 43 for engaging the locking claw 55.

  As shown in FIG. 1 and FIGS. 5 to 7, a protrusion 13 fitted into a pressure lid side recess 56 formed by being surrounded by a bank 50 is formed on the end surface of the other end of the mounting jig 1. Is provided.

  Next, a procedure for mounting the ring-shaped packing 2 on the mounting portion 53 using the mounting jig 1 according to the embodiment of the present invention described above will be described.

  First, as shown in FIGS. 5 to 7, the pressure lid 5 is integrated with the mounting jig 1 by fitting the protruding portion 13 into the pressure lid side concave portion 56. Then, the distal end portion of the insertion portion 10 is inserted into the ring of the ring-shaped packing 2. Thereafter, the column part 12 is moved while the ring-shaped packing 2 is uniformly stretched to reach the extended part 11. When the ring-shaped packing 2 that has reached the expanded portion 11 is further moved, it is detached from the mounting jig 1 and moved to the bank 50. The ring-shaped packing 2 transferred to the bank 50 contracts and is positioned in the groove 51.

  Thereafter, the pressure lid 5 is separated from the mounting jig 1 by releasing the state where the protruding portion 13 is fitted in the pressure lid-side concave portion 56. The separated pressure board 5 is attached to and covers the connector portion 4 of the portable telephone 3.

  The pressure lid 5 is attached to the connector portion 4 as follows. That is, after the guide pin 52 is inserted into the guide hole 42 and the pressure lid 5 is positioned, the pressure lid 5 is pressed strongly to engage the bulging portion 54 with the recess at the bottom of the guide hole 42. At the same time, the engaging claw 55 is engaged with the engaging notch 44. In the attached state, the ring-shaped packing 2 attached to the attachment portion 53 is compressed between the side wall of the connector recess 40 and prevents water from entering the connector recess 40.

  According to the above-described embodiment of the present invention, the ring-shaped packing 2 is attached to one end side of the mounting jig 1 by mounting the insertion portion 10 in the ring of the ring-shaped packing 2, and then the other end direction. It is gradually and uniformly expanded by moving to. In the state where the other end face is in contact with the mounting portion 53, the ring-shaped packing 2 positioned on the expansion portion 11 is expanded larger than the area of the mounting portion 53. While wearing. Therefore, since the ring-shaped packing 2 is mounted on the mounting portion 53 with no unevenness of expansion, the ring-shaped packing 2 is uniformly compressed over the entire region to seal the connector portion 4.

  Further, the mounting jig 1 and the pressure lid 5 are integrated by fitting the protruding portion 13 into the pressure lid side recess 56. Therefore, the ring-shaped packing 2 is continuously mounted on the mounting portion 53 of the pressure lid 5 after being expanded by the mounting jig 1. In particular, when the ring-shaped packing 2 having a small ring diameter is attached, the operation becomes easy.

  Furthermore, since the cross section of the insertion portion 10, the column portion 12, and the expansion portion 11 is circular, the ring-shaped packing 2 can be easily stretched uniformly during expansion by movement from the insertion portion 10 to the expansion portion 11. Become. Therefore, the ring-shaped packing 2 attached to the attachment portion 53 does not cause unevenness in the extended state.

  In the embodiment of the present invention, the insertion portion 10, the column portion 12, and the expansion portion 11 have a perfect cross section. Also good.

  In the embodiment of the present invention, the mounting portion 53 is provided on the pressure lid 5 side, but may be provided on the connector portion 4 side.

FIG. 1 is a perspective view showing a mounting jig in a state in which an insertion portion is inserted into a ring of a ring-shaped packing in an embodiment of the present invention. FIG. 2 is a perspective view showing a portable telephone provided with two adjacent connector portions applied to the embodiment of the present invention. FIG. 3 is a perspective view showing a connector portion sealed with the ring-shaped packing in FIG. 4 is a perspective view showing a pressure lid covering the connector portion in FIG. FIG. 5 is a perspective view showing a state in which the mounting jig and the pressure lid are integrated in the embodiment of the present invention. FIG. 6 is a side view showing a state in which the mounting jig and the pressure lid are integrated in the embodiment of the present invention. 7 is a cross-sectional view taken along line AA in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting jig 2 Ring-shaped packing 3 Portable telephone 4 Connector part 5 Pressurization lid 10 Insertion part 11 Extension part 12 Column part 13 Projection part 40 Connector recessed part 41 Connector 42 Guide hole 43 Engraving notch 50 Bank 51 Groove 52 Guide pin 53 Mounting portion 54 Swelling portion 55 Diameter stop pawl 56 Pressure lid side recess

Claims (3)

In the mounting jig for the ring packing for mounting the ring packing on the mounting part,
An insertion part to be inserted into the ring of the ring packing is formed at one end,
Forming an extended portion at the other end to expand the ring packing having a cross-sectional area larger than the area of the mounting portion formed by the bank on which the ring packing is mounted;
Forming a column part that continuously increases the cross-sectional area between the one end and the other end;
Provided on the end face of the other end is a protrusion that fits into a recess formed inside the bank,
A ring-shaped packing mounting jig , wherein when the concave portion and the protruding portion are fitted, a plurality of locking claws formed on the bank are engaged and integrated . The ring-shaped packing mounting jig according to claim 1, wherein the protruding portion is fitted into the concave portion formed in an elliptical shape . The ring insertion packing jig according to claim 1, wherein the insertion portion, the column portion, and the extension portion have a circular or elliptical cross section.

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