KR101442481B1 - Dust and moisture-proofing flip cover for mobile device and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a dust and moisture-proofing flip cover and a manufacturing method thereof. The dust and moisture-proofing flip cover includes a hard resin part which includes a closed loop protrusion rim, a soft resin part which includes a coupling part and a connection part, and an O ring-shaped elastomeric rim which coats the closed loop protrusion rim. Thereby, a dust and moisture-proofing function is enhanced. The separation of a dust and moisture-proofing silicon rubber, a moisture-proofing failure, and an assembly failure are prevented. A high assembly property and high productivity are obtained by reducing the number of manufacturing processes and components.

Description

TECHNICAL FIELD [0001] The present invention relates to a flap cover for a dust-proof and moisture-proof flip cover for a mobile device,

       BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dustproof and moisture proof flip cover for a mobile device and a method of manufacturing the same, and more particularly to a flip cover for an external connector for a USB cable exposed on a side of a mobile device such as a smart phone, A dustproof and moisture proof cover for a mobile device that can minimize the risk of malfunction or malfunction of a mobile device due to infiltration of dust or moisture, and a manufacturing method thereof .

In general, a mobile device is a mobile phone (Feature Phone), MP3 (Moving Pictures Experts Group (MPEG) -1 Audio Layer-3), a PMP (Portable Media Player), a PDA all portable, such as a laptop, a mini notebook, an ultra-mobile personal computer (UMPC), a tablet PC, a smart phone, a navigation device for navigation, Electronic devices.

Among the above-mentioned mobile devices, the functions of mobile phones and PDAs are converged to provide various functions and performances comparable to those of personal computers. In addition to the communication functions of conventional voice call centered mobile phones, the PDA's network functions, It has various functions such as personal information management function and Wi-Fi internet information retrieval function. In addition to voice call through portable terminal, video call and transmission, enjoy music through MP3 function, and enjoy video broadcasting contents through DMB In addition to navigation through GPS, you can enjoy games, download novels and comics, make phone data compatible with PC, and use USB to charge and record high definition (HD) You can play back high-resolution video and audio by moving the data by connecting with TV etc. Has a mobile high-definition link (MHL) function and infrared communication function by IrDA (Infrared Data Association). Has been established.

Although a smartphone can be defined in various ways, it is usually equipped with a high-level general-purpose operating system (OS) in addition to voice telephony, can be mounted and operated by a third party application, Device, and the sensitivity of the device is becoming higher as the device becomes more sophisticated and highly integrated.

However, in the smart life revolution that refers to the change of everyday life led by smart phones and the paradigm shift of IT industry and economy as a whole, many users of smartphone addiction are not allowed to use smart phones for a while, The frequency of use in humid environments is increasing. As a result, there is a tendency that the malfunction or failure frequency of the device due to moisture or moisture penetration is also increasing together. In addition, there is a tendency that the outdoor level As life increases, there is a demand in the industry for the development of smartphones with excellent dust and waterproofing capabilities that are free from outdoor activities in dirt, sand, dust, moisture or salty mountains, beaches, or riverside.

As a typical typical moisture-proof structure for a feature phone, as proposed in Korean Patent No. 10-0969192 (Registered on Jul. 2, 2010) by the present applicant, a waterproof structure in which silicone is double-injected between an upper casing and a lower casing There is a problem in that it is not possible to dust and waterproof the external connector connection terminal portion or the earphone connection terminal portion as in the smart phone because the waterproof packing is formed only in the fastening portion between the upper casing and the lower casing .

As disclosed in Korean Patent No. 10-1179446 (Registered on Aug. 29, 2012) by the present applicant as a moisture-proof structure for a smartphone, the outer surface of the lower casing under the back cover made of a thin resin plate And a silicon skin for protecting the battery storage part, the plurality of fixed screw holes, the antenna or the camera mounting area, etc., from external moisture or moisture is integrally formed on the outer surface of the lower casing as described above .

However, the above-described prior art by the applicant of the present invention can safely isolate a battery compartment, an antenna, an authentication or information chip, a camera installation part, or an engagement thread from an external environment in a mobile device such as a smart phone, , It is possible to minimize the concern such as malfunction or malfunction of the mobile device due to penetration of moisture or water through the clearance of the back cover of the smart phone even if it is used in a place with high humidity such as water, There is no suggestion of a dustproof and moisture-proof structure for exposed parts for connection to an external device such as an external connector connector for a USB cable and a stereo earphone jack connector.

As shown in FIG. 11, the conventional flip cover 1 'for a conventional external connector connection part has a fastening part 22' and a fastening part 23 'and has a smooth protruding part and a groove formed on the upper surface thereof. And a corresponding smooth surface 31 'separately injection-molded so as to be fitted in the smooth projecting portion and the groove of the soft resin portion 20' And the silicon rubber 30 'having the groove 32' and the rim 33 'is physically fitted or welded together.

However, such a conventional flip cover 1 'has a problem of low reliability due to a fear of poor assembly of the silicone rubber 30', as well as an inferior productivity due to an increase in airflow due to an increase in the number of parts, It is necessary to form a complicated surface irregular structure for preventing the silicone rubber 30 'from coming off, and in addition, the silicone rubber 30' must be made relatively large due to an increase in the area of the silicone rubber 30 ' There is a risk that the silicone rubber 30 'may be dropped when used or deformed when the flip cover 1' is closed to the connector connecting hole.

On the other hand, it has been considered that manufacturing and assembling the above-mentioned silicone rubber in the form of an O-ring has a high risk of falling off, and may be assembled in a twisted state, and thus it has not been possible until now. Likewise, There is a problem that it is inferior.

12 is a typical perspective view of the vibration-damping and moisture-proof flip cover 1. The flip cover 1 of the connector connector 110 formed on one side of the mobile device 100 such as a smart phone is opened 1). The flip cover 1 is provided with a fastening portion (see reference numeral 23 in FIG. 1) and a fastening portion (shown in FIG. 1). The USB plug 200 is inserted into the connector fitting 110, The flip cover 1 can be opened without being detached from the mobile device 100 by the above-described binding portion, and the flip cover 1 can be opened by the above-described fastening portion, 110).

Korean Registered Patent No. 10-0969192 (Registered on July 2, 2010) Korean Registered Patent No. 10-1179446 (registered on August 29, 2012)

Therefore, the first object of the present invention is to provide an ingress protection (IP) 67 as a criterion for complete blockage of harmful dust penetration from the human body and moving parts and the external environment, and as a standard that can be used for 30 minutes in a water depth of 15 cm to 1 m Proof flap cover for a mobile device that exhibits an enhanced dustproof and waterproof function that can meet the requirements of a rating condition or higher.

A second object of the present invention is to provide a dustproof and moistureproof flip cover for a mobile device that allows a user to enjoy a water sports leisure sport in winter as well as an active outdoor leisure sports in a winter season.

A third object of the present invention is to effectively remove assembly failure and reliability degradation problems such as dislodgement of vibration-damping and moisture-proof silicone rubber, poor waterproofing, tingling or twisted assembly, And to provide a dustproof and moisture-proof flip cover for a mobile device in which the problem of lowering productivity is completely eliminated.

A fourth object of the present invention is to provide an effective and efficient method of manufacturing a vibration-damping and moisture-proof flip cover for a mobile device having excellent assemblability and productivity.

According to a preferred aspect of the present invention to achieve the first to third objects, a hard resin part having a closed annular protruding rim and a body, A soft resin part surrounding at least a part of the body of the hard resin part and having a fastening part and a fastening part protruding outwardly; An annular protruding protrusion formed to cover the upper end of the closed ring-shaped protruded rim and an elastomeric rim having an annular recess formed to cover the lower end of the closed annular protruding rim, There is provided an anti-vibration and moisture-proof flip cover for a mobile device in which the upper surface of the body inside the closed loop-shaped protruding rim of the branch is directly exposed to the outside.

Here, a plurality of position fixing protrusions may be formed on the upper surface of the elastomeric rim.

The annular protruding jaw and the annular recessed portion at the lower end of the annular protruding jaw may be formed at the outer circumferential edge of the closed annular protruding rim.

Also, the closed ring-shaped protruding rim and the elastomeric rim may be formed in a rectangular or square shape having an elliptical shape, a circular shape, or a rounded corner.

In addition, the bonding interface between the hard and soft resin portions may be integrally formed by a plurality of recesses and protrusions.

In addition, the closed annular protruding rim of the hard resin part may have a rectangular shape in which the thickness of the upper part and the lower part are the same, or a tapered shape in which the thickness decreases in the upper part.

In addition, the fastening portion formed at one end of the soft resin portion may have a fastening head that forms a fastening portion, and a nail portion having a slant portion may be formed on the soft resin portion of the fastening portion directly below the fastening head.

The coupling portion formed at the other end opposite to the coupling portion includes an extension portion, a separation prevention head formed at an extension end of the extension portion, an inclined portion formed at a portion adjacent to the body of the soft resin portion, And may have a temporary fixing portion formed in an area adjacent to the inclined portion.

The hard resin portion is polycarbonate, the soft resin portion is a thermoplastic polyurethane, and the elastomeric rim may be silicon or silicone rubber.

According to a preferred embodiment of the present invention, there is provided a method of manufacturing a light-emitting device, comprising: (A) a light-receiving resin portion having a closed annular protruding rim and a body, at least a part of the body of the light- (B) an elastomeric rim covering the closed annular protruding rim of the above-mentioned double injection-molded product by injection molding; and (b) a step of forming a double injection- Wherein the elastomeric rim is insert-molded so as to form a rounded annular protruding jaw on the outer side of the upper end of the closed annular protruding rim and an annular recessed portion on the outer side of the lower end of the closed annular protruding rim. do.

The vibration-proof and moisture-proof flip cover for a mobile device according to the present invention is characterized in that at least a part of the body of the soft resin part formed with the fastening part and the fastening part is formed integrally with the hard resin part having the closed annular protruding rim, Since the rim is covered with the anti-vibration and moisture-proof silicone rubber, it has a reinforced anti-vibration and waterproof function that meets the international protection standard IP (Ingress Protection) grade 67 or higher. The method of manufacturing a dustproof and moisture proof flip cover for a mobile device according to the present invention can be applied to an outdoor outdoor leisure sports in the winter season. The same assembling defect and reliability lowering problem are effectively removed, It has excellent assemblability and productivity of the.

1 is a perspective view of an anti-vibration and moisture-proof flip cover for a mobile device according to a preferred embodiment of the present invention.
Figure 2 is a bottom perspective view of Figure 1;
Figure 3 is a side view of Figure 2;
Fig. 4 is a longitudinal sectional view of Fig. 2. Fig.
5 is a cross-sectional view in the width direction of Fig.
6 is a perspective view of a vibration-damping and moisture-proof flip cover for a mobile device according to another preferred embodiment of the present invention.
Figure 7 is a bottom perspective view of Figure 6;
8 is a side view of Fig. 6. Fig.
Fig. 9 is a longitudinal sectional view of Fig. 6. Fig.
10 is a cross-sectional view in the width direction of Fig.
11 is a bottom perspective view of a conventional dustproof and moisture-proof flip cover for a mobile device.
Fig. 12 is a perspective view of a dust-proof and moisture-proof flip cover in a normal use state.

In this specification, the term 'mobile device' refers to a smart phone, a feature phone, an MP3, a PMP, a PDA, a laptop, a mini notebook, a UMPC, a tablet PC, a navigation device, It is defined as all portable electronic devices, and may be specifically referring to smartphones.

The term " flip cover " as used throughout this specification is intended to cover exposed portions of external devices such as external connector connectors and stereo earphone connectors for USB cables exposed primarily to the sides of mobile devices such as smart phones, A cover which closes a portion of the cover, which is opened by using a nail and has a long elongated binding portion for preventing the cover from completely falling off in an open state, and which has a fastening portion for fastening, But is not limited to the connector and the stereo earphone jack connector.

The term " elastomeric rim " as used herein refers to a closed ring type rim capable of performing vibration damping and moisture-proofing by elastic sealing, and has suitable elastic restoring force as a material thereof. But it is not limited to a circular shape but may be an elliptical shape, a square shape, a rectangular shape, or an irregular shape. If it is a closed shape for dustproof and moisture proof, Any form is acceptable.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of a dustproof / moistureproof flip cover 1 for a mobile device according to a preferred embodiment of the present invention, Fig. 2 is a bottom perspective view of Fig. 1, Fig. 3 is a side view of Fig. 2, 6 is a perspective view of an anti-vibration and moisture-proof flip cover 1a for a mobile device according to another preferred embodiment of the present invention, and Fig. 7 is a cross- 6 is a cross-sectional view in the longitudinal direction of Fig. 6, Fig. 10 is a cross-sectional view in the width direction of Fig. 6, and the basic structure thereof is substantially the same, .

The dustproof and moisture proof flip cover 1 for a mobile device according to the present invention in the example shown in Figs. 1 to 5 is for an external connector connector for a USB cable, and in the present invention in the example shown in Figs. 6 to 10 The vibration-proof and moisture-proof flip cover 1a for a mobile device shows a stereo earphone jack connector, but the present invention is not limited thereto.

The basic structure of the dustproof and moistureproof flip cover (1, 1a) for a mobile device according to the present invention comprises a hard resin part (10) having a closed annular protruding rim (12) and a body (11) A soft resin part 20 surrounding at least a part of the body 11 of the body 11 and having a fastening part 22 and a fastening part 23 protruding outwardly, And is integrally formed with an elastomeric rim 30 having an annular projection 31 formed to cover the upper end of the closed annular protruded rim 12 and an annular recessed portion 32 formed to cover the lower end thereof .

Since the elastomeric rim 30 is formed by covering the outer surface of the closed annular protruding rim 12 of the hard resin part 10, the elastomeric rim 30 is O-ring-shaped as a whole. Therefore, unlike the conventional case, Shaped protruded rim 12 of the outer ring-shaped protruding rim 12 is directly exposed to the outside. In addition, since the elastomeric rim 30 protrudes in a round shape at one side and is formed in a curved shape at the bottom, the elastomeric rim 30 has a reliable anti-vibration property It will be able to burn.

In the illustrated example, the annular protruding jaw 31 and the annular recessed portion 32 at the lower end thereof are formed on the outer peripheral edge of the closed annular protruding rim 12, but in some cases, May also be formed on the inner periphery of the annular ridge 12, which is also within the scope of the present invention.

The closed annular protruding rim 12 and the elastomeric rim 30 may be formed in a rectangular or square shape having an elliptical shape, a circular shape, or a rounded shape, But may be in the form of a regular or irregular shape.

Although not shown, a plurality of circular, elliptical, square, rectangular, and polygonal positioning projections (not shown) may be formed on the upper surface of the elastomeric rim 30.

The bonding interface between the body 11 of the hard resin part 10 and the body 21 of the soft resin part 20 may be formed by a plurality of concave portions of the bottom surface 11d of the body 11, Can be formed in a double-injection manner by being interlocked with each other by the protruding portion 21b of the body 21 and fixed integrally.

The closed annular protruded rim 12 of the hard resin part 10 may be formed in a shape having a rectangular cross section having the same thickness of the upper part and the lower part as shown in Figs. 1 to 5, As shown in FIG. 10, a tapered section having a reduced thickness at the upper part may be formed.

The fastening portion 22 is formed at one end of the soft resin portion 20 and the fastening portion 22 has a fastening head 22a forming a fastening protrusion 22b The portion of the soft resin portion 20 located immediately below the insertion head 22a is formed to facilitate the flip opening by the nail by forming the nail portion 21c having the inclined portion 21d.

A coupling portion 23 is formed at the other end opposite to the coupling portion 22. The coupling portion 23 includes an extension portion 23d and a coupling portion 23d formed at an extending end portion of the extension portion 23d. A slanting portion 23c formed at a portion adjacent to the body 21 of the soft resin portion 20 and a slanting portion 23c formed at a region adjacent to the slanting portion 23c, (23b).

The vibration-proof and moisture-proof flip cover 1 for a mobile device shown in Figs. 1 to 5 and the vibration-damp-proofing and moisture-proof flip cover 1a for a mobile device shown in Figs. 6 to 10 are arranged such that the above-mentioned coupling portion 23 is inclined horizontally And that the closed annular rim 12 of the hard resin part 10 and the elastomeric rim 30 coated thereon are elliptical or circular in shape, But have essentially the same structural and morphological characteristics except morphological differences.

The present invention is not limited thereto. Specifically, the hard resin part 10 is made of polycarbonate, the soft resin part 20 is made of thermoplastic polyurethane, and the elastomeric rim 30 ) May be formed of liquid silicone or liquid silicone rubber.

A predetermined specific pattern 21e indicating the type of the connection port covered by the dustproof and moisture-proof flip cover for mobile device 1 according to the present invention may be formed on the outer surface of the soft resin part 20, have.

In the figure, the reference numeral 11b denotes an outer upper surface, 11c denotes a side surface, and 21a denotes a concave surface.

Next, a manufacturing method of the dustproof and moistureproof flip cover (1, 1a) for a mobile device according to the present invention will be briefly described, and the following steps may be performed.

(A) Double injection step:

A hard resin part 10 having a closed annular protruding rim 12 and a body 11 and at least a part of the body 11 of the hard resin part 10 and having a fastening part 22 at one end, A soft resin portion 23 having a binding portion 23 is formed by double injection.

(B) Insert molding step:

The elastomeric rim 30 is formed by covering the closed annular protruding rim 12 of the double extruded extrudate with the annular protruding rim 30 at the upper end of the closed annular rim 30, 31 are formed, and insert molding is performed to form an annular recessed portion 32 at the lower end.

Here, in the dual injection step, the soft resin part 23 is formed first and then the hard resin part 10 is post-molded by double injection molding. However, in some cases, the soft resin part 23 may be formed in reverse order, It is needless to say that the elastomeric rim 30 may be double injected into the closed annular protruding rim 12 of the hard resin part 10 and then the soft resin part 10 may be molded by insert injection. Of course, and this is also within the scope of the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not to be limited to the details and various changes and modifications may be suggested to those skilled in the art.

1.1a: dustproof and moisture-proof flip cover for mobile devices according to the present invention
10:
11: body 11a: inner upper surface
11b: outer upper surface 11c: side surface
11d: bottom surface 11e: concave portion
12: closed ring type protruding rim
20: Soft resin part
21: body 21a: concave surface
21b: projecting portion 21c: nail portion
21d: inclined portion 21f: pattern
22:
22a: Insertion head 22b:
23:
23a: Departure-preventing head 23b:
23c: inclined portion 23d: extension portion
30: elastomeric rim
31: annular protruding jaw 32: annular indentation

Claims (10)

A hard resin part having a closed annular protruding rim and a body;
A soft resin part surrounding at least a part of the body of the hard resin part and having a fastening part and a fastening part protruding outwardly;
And an elastomeric rim having an annular protruding protrusion formed to cover the upper end of the closed ring-shaped protruded rim and an annular recess formed to cover the lower end of the closed annular protruding rim, the elastomeric rim being formed integrally with the closed annular protruding rim,
Here, the upper surface of the body on the inside of the closed annular protruding rim of the hard resin part is directly exposed to the outside, the bonding interface between the hard resin part and the soft resin part is integrally formed by a plurality of recesses and protrusions, Wherein a soft nail portion having an inclined portion is formed on the soft resin portion of the soft tissue just below the soft tissue supporter and has an inserting head which forms a fastening portion of the fastening portion formed at one end of the soft resin portion, An inclined portion formed at a portion adjacent to the body of the soft resin portion and a tapered portion formed at a region adjacent to the inclined portion,
Flip cover for mobile devices. The dust cover according to claim 1, wherein a plurality of position fixing projections are formed on the upper surface of the elastomeric rim. The dustproof and moisture-proof flip cover for a mobile device according to claim 1, wherein the annular protruding jaw and the annular recessed portion at the lower end thereof are formed on the outer peripheral edge of the closed annular protruding rim. The dust cover as claimed in claim 1, wherein the closed ring-shaped protruding rim and the elastomer rim are formed in a rectangular or square shape having an elliptical shape, a circular shape, or a rounded corner. delete The dust-proof and moisture-proof flip for a mobile device according to claim 1, wherein the closed ring-shaped protruded rim of the hard resin part has a rectangular cross section in which the thicknesses of the upper and lower portions are the same, cover. delete delete The dustproof and moisture-proof flip cover for a mobile device according to claim 1, wherein the hard resin part is made of polycarbonate, the soft resin part is made of thermoplastic polyurethane, and the elastomeric rim is made of silicone or silicone rubber. A method for manufacturing an anti-vibration and moisture-proof flip cover for a mobile device according to claim 1, comprising the steps of:
(A) a double injection step for double injection molding a hard resin part having a closed annular protruding rim and a body, and a soft resin part surrounding at least a part of the body of the hard resin part and having a fastening part at one end and a fastening part at the other end ; And
(B) an elastomeric rim is formed by insert injection into a closed annular protruding rim of a double injection molded article, wherein an annular protruding step is formed at the upper end of the closed annular protruding rim and an annular recessed part is formed at the outer side of the lower end, The step of forming the insert.

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