KR100700726B1 - Mobile Terminal - Google Patents

Abstract

The present invention relates to a mobile terminal, comprising: a body having a switch passing hole formed in at least one region; One end is partially exposed to the outside of the main body through the switch passing hole and the other end is provided in the reset switch and the reset switch disposed in the main body; And it characterized in that it comprises a shielding waterproof unit for hermetically shielding the space between the reset switch. Accordingly, a mobile terminal is provided which is simpler in structure and easier to manufacture and assemble, while preventing moisture or moisture from penetrating into the reset switch region so that the reset switch does not fail or malfunction.

Mobile, Terminal, PDA, Industrial PDA, Waterproof, Reset Switch

Description

Mobile Terminal

1 is a perspective view of an industrial PDA according to an embodiment of the present invention,

2 is a rear view of the industrial PDA,

3 is a longitudinal sectional view of an industrial PDA;

4 is a rear perspective view of the upper casing of the industrial PDA;

5 is a rear perspective view of the lower casing of the industrial PDA;

6 is an enlarged view illustrating main parts of FIG. 5;

7 is a schematic cross-sectional view of the reset switch region.

* Explanation of symbols for main parts of the drawings

1: Industrial PDA 5: Main Body

10: upper casing 20: lower casing

30: middle frame 49: antenna

50: reset switch 50a: shaft

50b: head 52: shielding waterproof

54 casing rib 55 boss portion

55a: switch passing hole 55b: arc recess

58 rib coupling member 59 adhesive member

60: circuit driver

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal capable of preventing the penetration of moisture or moisture into the reset switch region.

In general, a mobile terminal is a terminal that can be used freely while moving regardless of a place. Representative examples thereof include a mobile communication terminal such as a mobile phone and a personal digital assistant (PDA) called a personal portable terminal. Therefore, the term 'mobile terminal' used herein includes all of these terms, but for the convenience of description, the following description will be limited to a personal digital assistant (PDA).

In a complex and diversified society, each individual has a need to store and maintain his or her own information, and various products are currently on the market to meet such individual needs. One of them is PDA (Personal digital assistant). PDA, also known as a pocket computer, is a generic term for a palm-sized device that has a calculation, data storage and retrieval function for personal or business use, and is often used to maintain schedule calendars and address book information.

In particular, industrial personal digital assistants (PDAs) are currently being used mainly in the logistics industry, and the market is gradually expanding. Industrial PDA is a PDA with a variety of office functions such as barcode scanner, card payment machine, etc., which are not found in general PDA. When using an industrial PDA, it is possible to efficiently carry out delivery, data management and related tasks. For example, insurers can carry out various insurance-related tasks such as customer information management, customer search, schedule management, counseling logbook management, anniversary search, and invoice processing. In hospitals, medical records, medical history, prescriptions, and image images and graphics such as X-rays can be entered and retrieved by an industrial PDA carried by medical personnel without time and place restrictions. The police officers are allowed to work on their mobile phones through industrial PDAs, allowing them to immediately pay the financial institutions the violations of traffic laws that can be paid only 2-3 days after the crackdown. It can dramatically shorten.

As can be seen that the industrial PDA is used in the various industrial fields described above, unlike the general PDA, the industrial PDA should have a certain level or more of a requirement that can withstand the industrial environment. In other words, unlike other PDAs, industrial PDAs may be used in freezers below 10 degrees Celsius and may be used for a long time in the open air. It must be waterproof, heat / cool, etc. to be competitive as a product. As such, industrial PDAs must be made more robust and firm than ordinary PDAs, and must be waterproof to resist snow or rain, but it is essential for the product. Because it is designed to satisfy the requirements of heat / cold function, and also needs to be equipped with a barcode scanner as described above, it is common to have a considerable size externally than a general PDA. In order to use more conveniently, it is necessary to reduce the size more.

On the other hand, among such conventional mobile terminals, particularly in the case of an industrial PDA has a reset switch (Reset Switch). The reset switch is used as a means for initializing various memories input by the user to the PDA, such as menus, information, and schedules. In other words, since it is inconvenient to delete the memory stored in PDA, reset switch is used to reset and delete unnecessary memory at once by using reset switch, and it is useful to re-enter the menu, information, and schedule conveniently. Is used.

However, unlike other buttons mounted on the PDA, such a reset switch should not be operated in a random manner, and should not be easily broken or malfunctioned by moisture or moisture. Therefore, a mobile terminal such as an industrial PDA has a need to not only prevent the reset switch from failing or causing malfunction due to water penetration into the reset switch area, but also to entail a structure in which the reset switch is not easily pressed.

However, in the conventional mobile terminal, especially the industrial PDA, even if the reset switch structure does not have most of the waterproof structure or has a waterproof structure, there is a problem that not only the structure is complicated but also easy to manufacture and assemble. Even with a waterproof structure, such a complicated structure and difficulty in manufacturing and assembling are not preferable because they increase the manufacturing cost.

An object of the present invention is to provide a mobile terminal that is simpler in structure and easier to manufacture and assemble, while preventing moisture or moisture from penetrating into the reset switch region so that the reset switch does not fail or malfunction.

According to the present invention, the above object is a main body having a switch passing hole formed in at least one region; A reset switch having one end partially exposed to the outside of the main body through the switch passing hole and the other end disposed in the main body; And a shielding waterproof part provided in the reset switch to seal the space between the switch passing hole and the reset switch in an airtight manner.

Here, it is advantageous in productivity that the shielded waterproof portion is integrally formed by double injection into the reset switch.

The reset switch may be made of polycarbonate (PC), and the shielding waterproof part may be made of urethane.

The reset switch includes a shaft having an upper end exposed to the outside of the main body through the switch passing hole, and a head having a relatively large cross sectional diameter compared to the cross sectional diameter of the shaft.

The shielding waterproof part may include a body part disposed in an annular shape on an inner side of the head part facing the shaft part, and a recessed groove recessed in a plate surface of the body part facing the switch hole. Can be.

The main body includes an upper and lower casing which are coupled to each other, and the switch passing hole may be formed by a boss formed on the rear surface of the lower casing.

In addition, a casing rib protruding from the rear surface of the lower casing in the circumferential direction of the boss portion with the boss portion therebetween; A rib coupling member coupled to the casing rib to prevent separation of the reset switch; And an adhesive member provided between the shielded waterproof portion and the rib coupling member to hermetically bond a contact surface between the shielded waterproof portion and the rib coupling member.

Here, the adhesive member and the rib coupling member are formed with a through hole through which the head of the reset switch passes, and the adhesive member is also provided between the casing rib and the rib coupling member and the contact surface between the casing rib and the rib coupling member. Can be hermetically bonded.

The adhesive member may be a double-sided tape.

The switch passing hole has a stepped shape having a different diameter by position along the longitudinal direction of the boss, and an exposed end of the boss is recessed in an arc shape from a plate surface of the lower casing to partially expose one end of the reset switch. An arc recessed portion is formed, and the exposure length of the reset switch exposed to the arc recessed portion is advantageously formed to be relatively lower than the plate surface of the other lower casing except for the arc recessed portion.

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

The present invention can be applied to various types of mobile phones and mobile terminals such as personal digital assistants (PDAs), including industrial personal portable terminals and general personal portable terminals, regardless of their type. Hereinafter, the description will be made by applying to an industrial PDA mainly manufactured in a flip type.

1 is a perspective view of an industrial PDA according to an embodiment of the present invention, Figure 2 is a rear view of the industrial PDA, Figure 3 is a longitudinal sectional view of the industrial PDA, Figure 4 is a rear perspective view of the upper casing of the industrial PDA, Figure 5 is an industrial Back perspective view of the lower casing of the PDA, FIG. 6 is an enlarged view of the main portion of FIG. 5, and FIG. 7 is a schematic cross-sectional view of the reset switch region.

As shown in these drawings, the industrial PDA 1 according to an embodiment of the present invention includes a main body 5 (see FIG. 3), an antenna 49 coupled to the main body 5, and a reset switch 50. Has The main body 5 consists of upper and lower casings 10 and 20 coupled up and down with the intermediate frame 30 interposed therebetween.

Although not shown in detail, the intermediate frame 30 is electrically connected to the internal component assembly 40, and the upper and lower casings 10 and 20 are supported while supporting the liquid crystal display (LCD) 42. Respectively). The resin molding waterproof ring 31 is formed at the edge of the intermediate frame 30. The resin molded waterproof ring 31 is formed along a rim of the intermediate frame 30 by a predetermined width, and is molded by urethane, which is a synthetic resin having elasticity, to be integrally combined with the intermediate frame 30 to perform a waterproof function. do. One side of the resin molded waterproof ring 31 is equipped with a side button (44).

Mainly referring to FIG. 4, the upper casing 10 includes a button hole 13 cut along the positions of the plurality of signal input buttons 12 so that the plurality of signal input buttons 12 may be exposed to the outside, and the liquid crystal. A screen opening 11 is cut out so that the display 42 can be exposed to the outside. In addition, four first coupling holes 14 to which screws (not shown), which are fastening members penetrating the lower casing 20 and the intermediate frame 30, are screwed are provided, one at each corner of the upper casing 10. . The frame first coupling hole 15 is formed around the button hole 13 as a means for secondly coupling the intermediate frame 30 and the upper casing 10 again.

The lower casing 20 is coupled to the upper casing 10 so as to be mutually accommodated therein to accommodate the internal component assembly 40 including a printed circuit board (PCB) between the upper casing 10. To form. As shown in FIG. 5, the lower casing 20 has four second coupling holes 21, one at each corner thereof. The screw that is a fastening member penetrating the second coupling hole 21 passes through the fastening hole (not shown) of the intermediate frame 30 and is then fastened to the first coupling hole 14 of the upper casing 10. In the lower casing 20, a battery hole 22 is cut out of a predetermined area so that the battery 46 (see FIG. 3) may be electrically connected to the printed circuit board (PCB). Frame second coupling holes 23 are provided at both upper sides of the battery hole 22. The screw passing through the frame second coupling hole 23 is fastened to the intermediate frame 30 to secondarily couple the lower casing 20 and the intermediate frame 30 to each other. Two through-holes formed in the upper portion of the frame second coupling hole 23 are lens devices (not shown) and flash devices mounted on the internal component assembly 40 as lens holes 24 and flash holes 25, respectively. It provides a window opened out of (not shown).

On the other hand, referring to Figs. 2 and 5 to 7, the rear surface of the lower casing 20 is provided with a reset switch 50 partially exposed from the plate surface of the lower casing 20. As described above, the reset switch 50 is used as a means for initializing various memories input by the user to the PDA 1 such as menus, information, and schedules. However, when moisture or moisture penetrates into the reset switch 50 area, the reset switch 50 is easily broken or malfunctions, and if the reset switch 50 protrudes excessively to the plate surface of the lower casing 20, the industrial PDA In the use of (1), the reset switch 50 may be arbitrarily pressed to operate, so the present invention solves this problem with the following structure.

The reset switch 50 is composed of a shaft portion 50a having a relatively small cross-sectional diameter, and a head portion 50b having a cross-sectional diameter relatively larger than that of the shaft portion 50a. The upper end of the shaft portion 50a is rounded and partially exposed by the arc depression portion 55b to be described later. When the reset switch 50 is pressed by a pressurized button structure, the reset switch 50 operates the circuit driver 60 existing thereunder to implement a reset function. The reset switch 50 may be injection molded from a plastic such as, for example, polycarbonate (PC).

The reset switch 50 is further provided with a shielding waterproof portion 52 as a means for hermetically shielding the space between the switch passing hole 55a and the reset switch 50 which will be described later. The shielding waterproof portion 52 includes a body portion 52a which is arranged in an annular shape on the inner surface of the head 50b facing the shaft portion 50a of the reset switch 50, and the switch passing hole 55a. It consists of a recessed groove 52b recessed in the inner surface of the body portion 52a facing. The recessed groove 52b may be excluded in configuration depending on the case. The shielding waterproof portion 52 may be formed of urethane. After the injection molding of the reset switch 50, the injection molding is integrally formed on the reset switch 50 by double injection.

Here, a brief description of the double injection molding method is as follows. The double injection molding method is capable of double injection using an injection machine or core or slide structure having two different resins or two different color resins and two injection devices and a rotating mechanism installed on the movable plate. The designed mold is used to fill and mold the secondary resin in the space between the first molded product and the second cavity, and the cavity on the primary side and the secondary side is precisely replaced, thereby limiting the shape. It is possible to diversify the design due to its small and wide range of product applications. In addition, by injecting at once, the conventional injection molding is formed into two parts in two times, and the second process of welding or painting process is commercialized. Product production was made possible. In the case of this embodiment, the reset switch 50 corresponds to the primary molded product, and the shielded waterproof portion 52 is formed thereon by the secondary molding.

When the double-injection of the shielded waterproof part 52 is made of urethane, it has elasticity itself, so it is inserted into the space between the switch through hole 55a and the reset switch 50, and then expands, thereby expanding the switch through hole 55a and the reset switch ( 50) The space (gap) between the seals will be waterproof. In addition, the shielding and waterproofing portion 52 may also serve to partially support the relatively small reset switch 50.

On the other hand, a casing rib 54 protruding from the back of the lower casing 20 is formed integrally with the lower casing 20 on the back of the lower casing 20. First screw fastening portions 54a are formed at both sides of the casing rib 54 and one central portion thereof. And the boss part 55 protrudes inside the casing rib 54. As shown in FIG. The inside of the boss portion 55 forms a switch passing hole 55a through which the reset switch 50 partially passes.

Although the switch passing hole 55a may take the form of a straight line, as shown in detail in FIG. 7, the switch passing hole 55a has a stepped shape having a different diameter for each position along the longitudinal direction of the boss portion 55. . That is, the diameter thereof is gradually narrowed toward the outer surface of the lower casing 20.

An exposed end of the boss portion 55 opened to the outer surface of the lower casing 20 is formed with an arc depression portion 55b (refer to FIG. 7) recessed in an arc shape from the plate surface as compared with the other surface of the lower casing 20. It is. The end portion of the shaft portion 50a of the reset switch 50 rounded into the arc depression portion 55b is partially exposed. At this time, the exposure length of the reset switch 50 exposed by the arc recess 55b is relatively lower than the surface of the lower casing 20 except for the arc recess 55b. Therefore, when the PDA 1 is used, the reset switch 50 is arbitrarily pressed to operate. Of course, if the reset switch 50 is to be operated, the reset switch 50 may be pressed by using a toothpick or tweezers to operate the circuit driver 60 thereunder.

The casing rib 54 is made of a separate injection molding is combined with the rib coupling member 58 to prevent the separation of the reset switch 50. The rib coupling member 58 is formed with the second screw coupling portion 58a at the same position as the first screw coupling portion 54a formed in the casing rib 54. Accordingly, after arranging the rib coupling member 58 on the casing rib 54, the rib coupling member (not shown) is fastened to the casing rib 54 by the first and second screw fastening portions 54a and 58a. 58) can be combined easily.

However, when the casing rib 54 and the rib coupling member 58 are coupled using only a screw, the contact surface between the casing rib 54 and the rib coupling member 58 may not be completely hermetically contacted. This may reduce the waterproof function. In order to prevent this, there is further interposed between the casing rib 54 and the rib coupling member 58 an adhesive member 59 for hermetically bonding the contact surface between the casing rib 54 and the rib coupling member 58. This adhesive member 59 blocks the gap between the shielded waterproof portion 52 and the rib coupling member 58, which may be caused by deformation of the shielded waterproof portion 52 when the reset switch 50 is pressed. It plays an important role, which is more important in the present invention. Therefore, in this embodiment, the adhesive member 59 not only blocks the gap between the shielding waterproof portion 52 and the rib coupling member 58, but also the casing rib 54 between the casing rib 54 and the rib coupling member 58. Although the contact surface between 54 and the rib coupling member 58 may be hermetically bonded, sometimes the bonding member 59 is configured to hermetically bond only the contact surface between the shielded waterproof portion 52 and the rib coupling member 58. You could do it.

Referring to Figure 7, the adhesive member 59 is bonded to the casing rib 54 and the rib coupling member 58, it can be seen that it serves as a coupling and waterproofing between the components of the sealing and waterproofing portion 52. For convenience of assembly, the adhesive member 59 is used as a double-sided tape, but if necessary, it may be replaced by a bond or the like. Meanwhile, through holes 58b and 59a through which the head 50b of the reset switch 50 passes are formed on the plate surfaces of the rib coupling member 58 and the adhesive member 59, respectively.

The assembly process of the reset switch 50 having such a configuration will be briefly described as follows.

First, the shaft portion 50a of the reset switch 50 is inserted into the switch through hole 55a so that the end portion of the shaft portion 50a is partially exposed to the arc recessed portion 55b. When the reset switch 50 is disposed in the switch through hole 55a as described above, the urethane shielding waterproof portion 52 is fitted into the space between the switch through hole 55a and the reset switch 50, and then expands, thereby expanding the switch through hole. The space (gap) between the 55a and the reset switch 50 is sealed to provide a waterproof function.

Next, the adhesive member 59 which is a double-sided tape is bonded to the exposed surface of the casing rib 54. At this time, the adhesive member 59 is also bonded to the exposed surface of the shielding waterproof portion 52, the head 50b of the reset switch 50 is exposed to the through hole (59a) of the adhesive member 59. Next, while the head 50b of the reset switch 50 is fitted into the through hole 58b, the rib coupling member 58 is disposed on the casing rib 54 to be bonded to the other surface of the adhesive member 59, The fastening of the screws to the first and second screw fastening portions 54a and 58a completes the engagement of the rib coupling member 58.

After assembling the reset switch 50 and the structure around it in this state, when using the industrial PDA (1), the casing rib 54, the bonding member 59 and the rib coupling including the shielded waterproof portion 52 Due to the structural feature of the member 58, moisture, moisture, or the like cannot be penetrated into the reset switch 50 area. Therefore, the reset switch 50 can be effectively prevented from malfunctioning or malfunctioning due to moisture or moisture.

In addition, since the exposed end of the reset switch 50 protrudes lower than the other surface of the lower casing 20 in the arc depression 55b, the reset switch 50 may be arbitrarily used in the process of handling the industrial PDA 1. It is not pressed.

In the above embodiment, the industrial PDA has been described as an example, but the idea of the present invention can be sufficiently applied to a mobile phone.

In addition, in the above-described embodiment, the adhesive member 59 not only blocks the gap between the shielding waterproof portion 52 and the rib coupling member 58, but also the casing rib between the casing rib 54 and the rib coupling member 58. Although the contact surface between the 54 and the rib coupling member 58 may be hermetically adhered, in some cases, the adhesive member 59 may be attached only to the contact surface between the shielded waterproof portion 52 and the rib coupling member 58. Of course it can.

As described above, according to the present invention, there is provided a mobile terminal which is simpler in structure, easier to manufacture and assemble, and prevents the reset switch from malfunctioning or causing malfunction by preventing moisture or moisture from penetrating into the reset switch region. .

Claims (10)

A body having a switch passing hole formed in at least one region; A reset switch including a shaft having an upper end partially exposed to the outside of the main body through the switch passing hole, and a head disposed in the main body having a relatively large cross-sectional diameter relative to the cross-sectional diameter of the shaft; And A shielding waterproof part provided in the reset switch to seal the space between the switch passing hole and the reset switch in an airtight manner, The shielding waterproof portion includes a body portion disposed in an annular shape on the inner side of the head portion facing the shaft portion, and a recessed groove formed in the plate surface of the body portion facing the switch hole. Mobile terminal. The method of claim 1, The shielding waterproof portion is a mobile terminal, characterized in that integrally molded by double injection into the reset switch. The method of claim 2, The material of the reset switch is a polycarbonate (PC), the shielding waterproofing material is a mobile terminal, characterized in that the urethane (urethane). delete delete The method of claim 1, The body includes an upper and lower casing coupled to each other, The switch passing hole is a mobile terminal, characterized in that formed by the boss formed on the back of the lower casing. The method of claim 6, A casing rib protruding from the rear surface of the lower casing in the circumferential direction of the boss portion with the boss portion interposed therebetween; A rib coupling member coupled to the casing rib to prevent separation of the reset switch; And And a bonding member provided between the shielding waterproof portion and the rib coupling member to hermetically bond a contact surface between the shielding waterproof portion and the rib coupling member. The method of claim 7, wherein The adhesive member and the rib coupling member is formed with a through hole passing through the head of the reset switch, The adhesive member is provided between the casing rib and the rib coupling member, the mobile terminal, characterized in that to seal the contact surface between the casing rib and the rib coupling member in an airtight manner. The method of claim 8, The adhesive member is a mobile terminal, characterized in that the double-sided tape. The method of claim 6, The switch passing hole has a stepped shape different in diameter for each position along the longitudinal direction of the boss, An exposed end of the boss portion is formed with an arc depression portion recessed in an arc shape from the plate surface of the lower casing to partially expose one end of the reset switch. And an exposure length of the reset switch exposed to the arc recess is lower than that of the lower casing except for the arc recess.

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