JP4336798B2 - Waterproof structure for portable electronic device and portable electronic device having the structure - Google Patents

Description

  The present invention relates to a waterproof structure for a portable electronic device in which, for example, an upper housing and a lower housing are slidably coupled to each other, and a portable electronic device having the structure.

2. Description of the Related Art Conventionally, a mobile phone as a portable electronic device has a case of a single unit (straight type) and is composed of two units for miniaturization so that both units can be folded together. Folding types that are coupled and sliding types that are slidably coupled to each other are also popular.
Among these, for example, the slide-type mobile phone is configured such that the upper casing on which the display unit or the like is mounted is slidable along the length direction with respect to the lower casing, and the two casings overlap each other. For example, during a call, both cases are extended and used so as to be separated from each other.
Here, the wiring board mounted on the upper housing and the wiring substrate mounted on the lower housing have FPCs (Flexible Printed Circuits) drawn out from openings formed on opposite sides of both housings. It is electrically connected via the FPC (for example, refer to Patent Document 1).

In order to completely perform waterproofing and dustproofing, it is preferable that the two housings slide and displace with each other with no gap between the upper housing and the lower housing. A slight gap is essential for operation.
FIG. 28 is a front view showing the configuration of a conventional slide-type mobile phone, showing the expanded state, and FIG. 29 is a cross-sectional view showing the configuration of the mobile phone, in a contracted state. FIG. 30 is a cross-sectional view taken along the line P-P in FIG. 29, and FIG. 31 is a cross-sectional view taken along the line Q-Q in FIG.
As shown in FIGS. 28 to 31, in the cellular phone 101, an upper casing 104 of the upper unit 102 and a lower casing 113 of the lower unit 103 are slidably coupled to each other.

The upper unit 102 includes a flat upper housing 104, a display unit 105 that is mounted on the upper housing 104 and is configured by a liquid crystal display device, a sub operation unit 106 for performing operations in a degenerated state, and a receiver unit. 107.
In addition, an upper wiring board 108 on which various electronic components constituting the display unit 105, the sub operation unit 106, and the like are mounted is mounted in the upper housing 104 of the upper unit 2.
Further, an opening 109 for drawing out the FPC 118 is formed on the back surface side (lower unit 103 side) of the upper housing 104.

The lower unit 103 is mounted on each of the flat lower housing 113 and the lower housing 113, and controls a control unit that controls each part of the mobile phone body, a processing program executed by the control unit, various data, and the like. A storage unit for storing; a main operation unit 114 having an operation surface exposed at the time of extension and having a large number of key buttons for inputting numbers and characters; an antenna for transmitting and receiving radio waves; and an antenna A wireless communication unit used for transmitting and receiving wireless radio waves and performing telephone calls and data communication in accordance with a predetermined protocol, and a transmission unit including a microphone for inputting a transmission voice.
Further, a lower wiring board 116 on which various electronic components constituting a control unit, a main operation unit 114, a wireless communication unit, and the like are mounted is mounted in the lower housing 113 of the lower unit 103.
Further, an opening 117 for drawing out the FPC 118 is formed on the front surface side (upper unit 102 side) of the lower housing 113.

The upper unit 102 and the lower unit 103 are electrically connected via the FPC 118. That is, both ends of the FPC 118 are connected to the connector 119 attached to the back surface of the upper wiring board 108 constituting the upper unit 102 and the connector 121 attached to the front surface side of the lower wiring board 116 constituting the lower unit 3. The
The FPC 118 is formed by forming a predetermined circuit pattern on a base film having insulation and flexibility, and is folded and arranged in a curved shape with a substantially U-shaped cross section. Will change.

The upper housing 104 and the lower housing 113 are slidably coupled to each other by a slide mechanism 122 as shown in FIG.
The slide mechanism 122 includes a pair of long metal sliding members 123 and 123 having a T-shaped cross section that are attached along the sliding direction on both sides of the back surface side of the upper housing 104, and the lower housing 113. It has a pair of long metal guide members 124, 124 attached to both sides of the surface side along the sliding direction and formed with a groove portion 124a having a U-shaped cross section having a smooth surface. . The sliding member 123 has a flange portion 123a and a leg portion 123b.

  However, foreign matter such as moisture or dust enters from the peripheral edge of a slight gap between the upper housing 104 and the lower housing 113 to avoid surface contact and ensure smooth sliding operability, and pulls out the FPC 118. Therefore, the openings 109 and 117 formed in the upper casing 104 and the lower casing 113 may reach the inside of the upper casing 104 and the lower casing 113 through the openings 109 and 117, and the upper wiring There is a problem that it reaches the substrate 108 and the lower wiring substrate 116 and causes a failure in the worst case.

Recently, with the increase in functionality, the size of mobile phones has increased, and as a result, the required amount of sliding has also increased, and the movable range of the FPC has been expanded to be formed in the upper and lower casings. Since the opening for pulling out the FPC must be increased, the possibility of moisture and dust entering the inside of the upper housing and the lower housing is increased, and the risk of failure is also increased.
In general, in an electronic device, for waterproofing a movable part (for example, an operation unit), for example, a protrusion (rib) is formed in a ring (frame shape) on the back side of the housing, and a flange is formed. For example, it arrange | positions so that the operation member may be enclosed, and the device is made | formed so that the penetration | invasion of the water | moisture content below this operation member may be suppressed (for example, refer patent document 2).

The part where sliding operation is performed and waterproofing needs to be prevented from being displaced by the protrusion, and the part where the operation is not frequently performed (for example, the lid of the battery pocket) For example, an annular waterproof packing member is disposed on the housing, and a lid or the like having an annular protrusion formed on the back surface is pressed to ensure waterproofness (for example, Patent Documents). 3).
However, when sliding the protrusion on the packing member, the sliding operation cannot be smoothly performed due to the frictional force, so that there is a problem that it cannot be applied to a part where the operation is frequently performed.
For this reason, in place of the packing member, a technique has been proposed in which a non-woven fabric made of ultrafine fibers is interposed to suppress the intrusion of foreign matter and reduce the frictional resistance during the sliding operation (for example, Patent Document 4). reference.).

JP 2003-319042 A JP 2001-307484 A Japanese Patent Laid-Open No. 11-25940 JP 2004-153597 A

The problem to be solved is that in the above-described conventional technology, it is necessary to use a member such as a nonwoven fabric, and the cost increases due to material costs and the like.
In addition, when a non-woven fabric or the like is used, the waterproof function also deteriorates due to secular change. Therefore, it is necessary to replace the waterproof function, and the waterproof function may be deteriorated without the user's knowledge.

  The present invention has been made in view of the above circumstances, and ensures smooth sliding operability and contributes to cost reduction while suppressing the entry of moisture, dust, etc., and has waterproof and dustproof properties. An object of the present invention is to provide a waterproof structure for a portable electronic device that can be improved and a portable electronic device having the structure.

  In order to solve the above-mentioned problem, the invention described in claim 1 relates to a waterproof structure of a portable electronic device in which a first housing and a second housing are slidably coupled, and the first housing The first circuit portion mounted on the housing and the second circuit portion mounted on the second housing are electrically connected by a flexible wiring board, and the flexible wiring board is connected to the first housing. The first opening and the second opening formed on the opposite sides of the body and the second housing, respectively, and the edges of the first opening and the second opening are respectively A first barrier portion and a second barrier portion for preventing liquid from entering the first casing or the second casing from the first opening and the second opening, It is characterized by being formed so as to surround the first opening and the second opening.

  According to a second aspect of the present invention, there is provided a waterproof structure for a portable electronic device according to the first aspect, wherein the first barrier portion and the second barrier portion are the second casing and the second barrier portion, respectively. It is characterized by being formed so as to maintain a non-contact state with respect to the first housing.

  According to a third aspect of the present invention, there is provided the waterproof structure for the portable electronic device according to the first or second aspect, wherein the height of the first barrier portion and the second barrier portion is the same as that of the liquid. It is characterized by being set to a predetermined height for preventing the first opening and the second opening from reaching beyond the first barrier section and the second barrier section.

  According to a fourth aspect of the present invention, there is provided a waterproof structure for a portable electronic device according to the first, second, or third aspect, wherein the first barrier portion and the tip of the second barrier portion are respectively the first and second barrier portions. It is characterized by being formed to be bent outward with respect to the opening and the second opening.

  A fifth aspect of the invention relates to a waterproof structure for a portable electronic device according to any one of the first to fourth aspects, wherein the first barrier portion and the second barrier portion are the first barrier portion. And the first annular barrier group and the second annular barrier group formed in multiple portions at the edge of the second opening.

  According to a sixth aspect of the present invention, there is provided a waterproof structure for a portable electronic device according to any one of the first to fifth aspects, wherein the outside of the first barrier portion and the second barrier portion is A first annular groove and a second annular groove are formed so as to surround the first barrier and the second barrier, respectively.

  According to a seventh aspect of the present invention, there is provided a waterproof structure for a portable electronic device according to the sixth aspect, wherein the first annular groove portion and the second annular groove portion are branched from predetermined portions of the first annular groove portion. A first branch groove portion and a second branch groove portion are formed up to the peripheral portion of the housing and the second housing, respectively.

  According to an eighth aspect of the present invention, a portable electronic device includes the waterproof structure for the portable electronic device according to any one of the first to seventh aspects.

According to the configuration of the present invention, the edges of the first opening and the second opening are respectively connected to the inside of the first casing and the second casing from the first opening and the second opening. Since the first barrier portion and the second barrier portion for preventing the intrusion of the liquid are formed so as to surround the first opening and the second opening, smooth sliding operability is ensured, and Further, while contributing to cost reduction, entry of foreign matter such as moisture and dust can be suppressed, and waterproofness and dustproofness can be improved.
Further, as in the prior art, for example, there is no need to replace the packing member made of an elastic body such as rubber or the nonwoven fabric, and the waterproof function and the dust-proof function can be maintained, thereby improving the reliability. be able to.

  The edges of the first opening and the second opening are respectively for preventing liquid from entering the inside of the first casing and the second casing from the first opening and the second opening, respectively. The first barrier portion and the second barrier portion are formed so as to surround the first opening and the second opening, thereby ensuring smooth sliding operability and contributing to cost reduction. However, the object of suppressing the intrusion of foreign matters such as moisture and dust and improving the waterproof and dustproof properties was realized.

  FIG. 1 is a front view showing the configuration of a slide-type mobile phone according to a first embodiment of the present invention, showing a contracted state, and FIG. 2 is a side view showing the configuration of the mobile phone. FIG. 3 is a front view showing the configuration of the mobile phone, FIG. 3 is a front view showing the extended state, and FIG. 4 is a side view showing the configuration of the mobile phone. FIG. 5 is a block diagram showing the configuration of the mobile phone, FIG. 6 is a cross-sectional view taken along line AA in FIG. 1, and FIG. FIG. 8 is a cross-sectional view taken along line CC in FIG. 3, FIG. 9 is an enlarged cross-sectional view showing an F portion in FIG. 6, and FIG. FIG. 11 is a cross-sectional view taken along line DD of FIG. 2, and FIG. 12 is a cross-sectional view taken along line EE of FIG.

As shown in FIGS. 1 to 8, the cellular phone 1 of this example is configured by an upper unit 2 and a lower unit 3 being slidably coupled to each other.
The upper unit 2 includes a flat upper casing 4 and a display section 5 that is mounted on the upper casing 4 and includes a liquid crystal display device or the like. For example, a standby screen or a function setting screen is displayed. A sub-operation unit 6 for performing an operation and a reception unit 7 including a speaker for outputting a reception voice are provided. Note that a touch panel is incorporated in the display unit 5.

Further, as shown in FIGS. 6 to 8, an upper wiring board 8 on which various electronic components constituting the display unit 5, the sub operation unit 6, and the like are mounted is mounted in the upper housing 4 of the upper unit 2. ing.
Further, an opening 9 for drawing out the FPC 22 as a flexible wiring board is formed on the back surface side (lower unit 3 side) of the upper housing 4. Further, at the edge of the opening 9, a waterproof rib 11 is formed in an annular shape so as to surround the opening 9 and projecting toward the lower housing 13.
In addition, the recessed part 4a is formed in the area | region before the waterproof rib 11 of the lower end edge side (transmission part side of the lower unit 3) of the opening 9, and the predetermined | prescribed height of the waterproof rib 11 is ensured.

  Further, as shown in FIGS. 2 to 8, the lower unit 3 is mounted on the flat lower housing 13 and the lower housing 13 and controls the constituent parts of the mobile phone main body. A main operation unit having a storage unit 15 for storing a processing program executed by the unit 14, various data, and the like, and a number of key buttons and the like for exposing an operation surface at the time of extension and inputting numbers and characters. 16, an antenna 17 that transmits and receives radio waves, a radio communication unit 18 that is used to transmit and receive radio waves via the antenna 17 and perform telephone calls and data communication according to a predetermined protocol, and a microphone that inputs transmission voice And a transmitter 19 comprising the following.

A lower wiring board 21 on which various electronic components constituting the control unit 14, the main operation unit 16, the wireless communication unit 18 and the like are mounted is mounted in the lower housing 13 of the lower unit 3.
Further, an opening 23 for drawing out the FPC 22 is formed on the surface side (upper unit 2 side) of the lower housing 13. Further, at the edge of the opening 23, a waterproof rib 24 is formed in an annular shape so as to surround the opening 23 so as to protrude toward the upper housing 4.

  A recess 13a is formed in a region in front of the waterproof rib 24 on the lower end edge side (sending part side) of the opening 23, and a predetermined height of the waterproof rib 24 is secured. That is, on the lower edge side of the opening 23, the tip of the waterproof rib 24 is located at a position lower than other portions (in this example, a region where no ribs or the like other than the region near the opening 23 on the surface of the lower housing 13 are formed. ) So that they are approximately the same height as As a result, interference with the FPC 22 is also avoided.

The upper unit 2 and the lower unit 3 are electrically connected via the FPC 22. That is, the connector 26 attached to the back surface (lower unit 3 side) of the upper wiring board 8 constituting the upper unit 2 and the surface of the lower wiring board 21 constituting the lower unit 3 (upper unit 2 side). Both ends of the FPC 22 are connected to the connector 27.
The FPC 22 has a predetermined circuit pattern formed on an insulating and flexible base film, and is folded and arranged in a curved shape with a substantially U-shaped cross section. Will change.

Note that the waterproof ribs 11 and 24 do not hinder the sliding displacement between the upper housing 4 and the lower housing 13 and the deformation of the FPC 22 due to the sliding displacement, respectively. 13 is formed.
The upper housing 4 and the lower housing 13 are slidably coupled to each other by a slide mechanism 28 as shown in FIGS.

The slide mechanism 28 includes a pair of long metal sliding members 29 and 29 having a T-shaped cross section attached to both sides on the back side of the upper housing 4 along the sliding direction (stretching direction), A pair of long metal guide members 31 which are attached along the sliding direction at positions corresponding to the sliding members 29 on both sides on the surface side of the housing 13 and have a U-shaped groove 31a. , 31.
The sliding member 29 has a flange portion 29a and a leg portion 29b, and is displaced together with the upper housing 4 during a sliding operation, so that the lower end surface of the leg portion 29b has almost no frictional resistance on the bottom surface of the groove portion 31a. The mobile phone 1 is brought into a degenerated state or an extended state by sliding to the right.
The sliding member 29 also has a function of preventing moisture and the like from entering from the side, and a spacer function for maintaining a predetermined slight gap separating the mutually facing surfaces of the upper housing 4 and the lower housing 13. ing.

  In this example, the waterproof structure 31 has a small gap between the back surface of the upper housing 4 in which the opening 9 is formed and the surface of the lower housing 13 in which the opening 23 is formed. In order to prevent the foreign matter from entering the opening 9 and the opening 23 when a foreign matter has entered, the waterproof ribs are provided so as to surround the opening 9 and the opening 23 at the edges of the opening 9 and the opening 23, respectively. 11. The waterproof rib 24 is provided in an annular shape, and the tip of the waterproof rib 11 and the waterproof rib 24 is formed so as not to contact the front surface of the lower housing 13 and the back surface of the upper housing 4, respectively. It is roughly structured.

As a result, even if a foreign object has entered through a slight gap between the upper housing 4 and the lower housing 13, the opening 9 and the opening 23 are seen in front of the foreign material in both the contracted state and the extended state. The formed waterproof rib 11 and waterproof rib 24 prevent entry into the upper housing 4 and the lower housing 13 from the opening 9 and the opening 23, respectively. Here, since the waterproof rib 11 and the waterproof rib 24 do not contact the lower housing 13 and the upper housing 4, smooth sliding operation is not hindered.
In particular, foreign matter that has entered from the side is first blocked by the leg portions 29 b of the sliding member 29 that constitutes the slide mechanism 28.

The control unit 14 includes a CPU (Central Processing Unit) and the like, and processes, for example, a communication control program for performing a calling process for a predetermined telephone number and input information from various key buttons of the main operation unit 16. Various processing programs stored in the storage unit 15 such as an operation control program and a display control program for controlling the display unit 5 are executed, and each component is controlled using various registers and flags secured in the storage unit 15 Communication control processing, operation control processing, display control processing, and the like are performed.
The storage unit 15 includes a semiconductor memory such as a ROM and a RAM. The storage unit 15 includes a communication control processing program executed by the control unit 14, various processing programs such as an operation control program and a display control program, and various functions. Various information such as setting information, communication history information, and telephone directory information is stored, and various registers and flags used by the control unit 14 when executing the program are secured.

The main operation unit 16 activates a browser to browse a home page, selects a browser mode selection key, a determination key used to determine an operation, a menu key for displaying an operation menu, and a character input mode. Input mode switching key, phone book key for registering and searching the phone book, call start key used for making a voice call, clear key to return the operation to the previous state, and turning on / off the power For inputting a function key group including a power key used for canceling various operations, a cursor key for moving a display screen-like cursor displayed on the display unit 5 in the vertical and horizontal directions, and numbers, for example. And a numeric keypad group.
The wireless communication unit 18 includes an RF circuit, a modulation / demodulation circuit, a baseband processing circuit, and the like. The wireless communication unit 18 modulates voice and data and transmits the radio wave via the antenna 17 and receives the radio wave via the antenna 17. Are used to perform voice communication and data communication according to a predetermined protocol.

Next, the operation of the cellular phone 1 of this example will be described with reference to FIGS.
In the degenerated state, for example, when foreign matter such as water droplets or dust enters the inside from the lower side (the transmission unit side of the lower unit 3) in the gap between the upper housing 4 and the lower housing 13 First, it reaches the position where the recess 4a in front of the waterproof rib 11 is formed, and thereafter, the movement to the openings 9 and 23 is blocked by the waterproof rib 11 having a predetermined height (see FIG. 6).
The foreign matter headed to the opening 23 without being blocked by the waterproof rib 11 reaches the portion where the recess 13a is formed in front of the waterproof rib 24, and then moves to the opening 23 by the waterproof rib 24 having a predetermined height. Blocked (see FIG. 6 and FIG. 10).

Further, when a foreign object enters from the upper side (the receiving unit side of the lower unit 3) toward the inside, it is blocked by the waterproof ribs 11 and 24 having a predetermined height and blocked from moving to the openings 9 and 23. (See FIGS. 6 and 9).
Further, when a foreign object enters from the left and right sides, first, the movement to the openings 9 and 23 is blocked by the leg portions 29b of the sliding member 29 constituting the slide mechanism 28 (see FIG. 7). ). A foreign object heading toward the openings 9 and 23 without being blocked by the leg portion 29b is blocked from moving to the openings 9 and 23 by the waterproof rib 24 having a predetermined height (see FIG. 6).

In the extended state, in the gap between the upper housing 4 and the lower housing 13, for example, when a foreign object enters the inside from below (the transmission unit side of the lower unit 3), the waterproof rib 24. Is reached, and thereafter the movement to the opening 23 is blocked by the waterproof rib 24 having a predetermined height (see FIG. 8).
The foreign matter headed to the opening 23 without being blocked by the waterproof rib 11 reaches the portion where the recess 13a is formed in front of the waterproof rib 24, and then moves to the opening 23 by the waterproof rib 24 having a predetermined height. Blocked (see FIG. 8).

Further, when a foreign object enters from the upper side (the receiving unit side of the lower unit 3) toward the inside, it is blocked by the waterproof rib 11 and the waterproof rib 24 having a predetermined height, and moves to the openings 9 and 23. Blocked (see FIG. 8).
Further, when a foreign object enters the inside from the left and right sides, the movement to the openings 9 and 23 is first blocked by the legs 29b (see FIG. 7). The foreign matter heading toward the openings 9 and 23 without being blocked by the leg 29b is blocked from moving to the openings 9 and 23 by the waterproof ribs 11 and 24 having a predetermined height (see FIG. 8).

In this way, entry of foreign matter from the openings 9, 23 is avoided.
The waterproof rib 11 and the waterproof rib 24 are formed so that their tips do not contact the front surface of the lower housing 13 and the back surface of the upper housing 4, respectively. Since the waterproof rib 11 and the waterproof rib 24 do not come into contact with the lower housing 13 and the upper housing 4 when performing a slide operation, smooth sliding operation is hindered. There is nothing.

As described above, according to the configuration of this example, the waterproof rib 11 formed on the edge of the opening 9 of the upper housing 4 and the opening of the lower housing 13, whether in the contracted state or the extended state. The waterproof ribs 24 formed at the edge of 23 enter from a slight gap between the back surface of the upper housing 4 in which the opening 9 is formed and the surface of the lower housing 13 in which the opening 23 is formed. Since the foreign matter is arranged so as to prevent the foreign matter from entering the opening 9 and the opening 23, respectively, even if the foreign matter enters from a slight gap between the upper housing 4 and the lower housing 13, the waterproof rib 11 and the waterproof rib 24 can prevent foreign matter from entering the opening 9 and the opening 23, respectively.
In particular, foreign matter that has entered from the side is first blocked by the leg portions 29 b of the sliding member 29 that constitutes the sliding mechanism 28.
Therefore, it is possible to suppress the entry of foreign matters such as moisture and dust into the upper housing 4 and the lower housing 13, improve waterproofness and dustproofness, and prevent occurrence of failure.

  Moreover, the waterproof rib 11 and the waterproof rib 24 are formed so that their tips do not contact the front surface of the lower housing 13 and the back surface of the upper housing 4, respectively. When the sliding operation is performed, the waterproof rib 11 and the waterproof rib 24 do not come into contact with the lower housing 13 and the upper housing 4 in order to prevent the smooth sliding operation. It will never be.

Furthermore, since the waterproof rib 11 and the waterproof rib 24 are integrally formed as a part of the upper housing 4 and the lower housing 13, a member for waterproofing is not newly required. For this reason, since the number of parts is not increased, material costs and the like can be suppressed, and assembly can be easily performed. Further, as in the prior art, there is no need to replace the packing member made of an elastic body such as rubber or the nonwoven fabric, and the waterproof function and the dust-proof function can be maintained and the reliability can be improved. it can.
Thus, while ensuring smooth slide operability and contributing to cost reduction, entry of moisture, dust and the like can be suppressed, and waterproofness and dustproofness can be improved.

13 is a cross-sectional view showing a configuration of a slide type mobile phone according to a second embodiment of the present invention, and shows a degenerated state. FIG. 14 is taken along line HH in FIG. FIG. 15 is a cross-sectional view showing the configuration of the mobile phone, showing the extended state, FIG. 16 is an enlarged cross-sectional view showing the I part of FIG. 13 in an enlarged manner, and FIG. FIG. 18 is an enlarged cross-sectional view showing a portion J of FIG. 13, FIG. 18 is a cross-sectional view taken along line KK in FIG. 13, and FIG. 19 is a cross-sectional view taken along line LL in FIG. is there.
This example is greatly different from the first embodiment described above in that a groove portion is formed annularly along the waterproof rib on the outer side of the annular waterproof rib.
Since the other configuration is substantially the same as the configuration of the first embodiment described above, the description thereof will be simplified.

As shown in FIGS. 13 to 15, the cellular phone 1 </ b> A in this example is configured by an upper unit 41 and a lower unit 42 that are slidably coupled to each other.
The upper unit 41 includes a flat upper housing 43, a display unit 5, a sub operation unit 6, and a receiver unit 7 mounted on the upper housing 43, respectively.
In addition, an upper wiring substrate 44 on which various electronic components constituting the display unit 5, the sub operation unit 6, and the like are mounted is mounted in the upper housing 43 of the upper unit 41.
Further, an opening 45 for pulling out the FPC 49 is formed on the back surface side (lower unit 42 side) of the upper housing 41. Further, at the edge of the opening 45, a waterproof rib 46 is formed in an annular shape so as to surround the opening 45 so as to protrude toward the lower housing 47. Furthermore, an annular groove 48 is formed on the outer side (root) of the waterproof rib 46 so as to surround the waterproof rib 46.
In this example as well, a recess 43a is formed in a region in front of the waterproof rib 46 on the lower end edge side of the opening 45 (the transmission unit side of the lower unit 42), and a predetermined height of the waterproof rib 46 is ensured.

The lower unit 42 includes a flat lower housing 47, a control unit 14 mounted on the lower housing 47, a storage unit 15, a main operation unit 16, an antenna 17, a wireless communication unit 18, The transmitter 19 is provided.
A lower wiring board 51 on which various electronic components constituting the control unit 14, the main operation unit 16, the wireless communication unit 18 and the like are mounted is mounted in the lower housing 47 of the lower unit 42.
Further, an opening 52 for drawing out the FPC 49 is formed on the surface side (upper unit 41 side) of the lower housing 47. Further, at the edge of the opening 52, a waterproof rib 53 is formed in an annular shape so as to surround the opening 52 and projecting toward the upper housing 43. Further, an annular groove 54 is formed on the outer side (root) of the waterproof rib 53 so as to surround the waterproof rib 53.
In this example as well, a recess 47a is formed in a region in front of the waterproof rib 53 on the lower end edge side (sending part side) of the opening 52, and a predetermined height of the waterproof rib 53 is ensured.

A connector 56 attached to the back surface (lower unit 42 side) of the upper wiring board 44 constituting the upper unit 41 and a connector 57 attached to the front surface (upper unit 41 side) of the lower wiring board 51 constituting the lower unit 42. And both ends of the FPC 49 are connected to each other.
It should be noted that the waterproof ribs 46 and 53 are provided so that the sliding displacement with the upper housing 43 and the lower housing 47 and the deformation of the FPC 49 accompanying this sliding displacement are not hindered, respectively. Is formed.

As shown in FIG. 14, the upper housing 43 and the lower housing 47 are slidably coupled to each other by a slide mechanism 59.
The slide mechanism 59 includes metal sliding members 61 and 61 attached to the upper housing 43 and a metal guide member 62 attached to the lower housing 47.
The sliding member 61 also has a function of preventing moisture and the like from entering from the side, and a spacer function for maintaining a predetermined slight gap separating the mutually facing surfaces of the upper housing 43 and the lower housing 47. ing.

  In this example, the waterproof structure 64 has a small gap between the back surface of the upper housing 43 in which the opening 45 is formed and the surface of the lower housing 47 in which the opening 52 is formed. In order to prevent the foreign matter from entering the opening 43 and the opening 52 when a foreign matter has entered, the waterproof ribs are provided so as to surround the opening 43 and the opening 52 at the edges of the opening 43 and the opening 52, respectively. 46, a waterproof rib 53 is provided in an annular shape, and an annular groove 48 and an annular groove 54 are formed outside the waterproof rib 46 and the waterproof rib 53 so as to surround the waterproof rib 46 and the waterproof rib 53. The tips of the waterproof rib 46 and the waterproof rib 53 are formed and schematically configured so as not to contact the front surface of the lower housing 47 and the back surface of the upper housing 43, respectively.

As a result, even if a foreign object has entered through a slight gap between the upper housing 43 and the lower housing 47, the opening 43 and the opening 52 are seen in front of the foreign material in both the contracted state and the extended state. The waterproof rib 46 and the waterproof rib whose height is substantially increased when the foreign matter first enters and is caught in the formed annular groove 48 and the annular groove portion 54 and tries to move toward the opening 43 and the opening 52 side. 53 prevents entry into the upper housing 43 and the lower housing 47 from the opening 43 and the opening 52, respectively. Also in this example, since the waterproof rib 46 and the waterproof rib 53 do not contact the lower housing 47 and the upper housing 43, smooth sliding operation is not hindered.
In particular, foreign matter that has entered from the side is first blocked by the legs of the sliding member 61 constituting the slide mechanism 59.

According to the configuration of this example, substantially the same effect as that of the first embodiment described above can be obtained.
In addition, since the annular groove portions 48 and 54 are provided outside the waterproof ribs 46 and 53, foreign matters that have entered the annular groove portion 48 and the annular groove portion 54 are captured, and movement to the opening 45 and the opening 52 is prevented. Since the substantial height of the waterproof rib 46 and the waterproof rib 53 is increased by the groove portion 48 and the annular groove portion 54, the upper casing 43 and the lower casing are opened from the opening 43 and the opening 52 by the waterproof rib 46 and the waterproof rib 53. Since entry into the inside of 47 is prevented, the waterproof function and the dustproof function can be further improved.

FIG. 20 is an explanatory diagram for explaining the configuration of the lower casing of the slide type mobile phone according to the third embodiment of the present invention, and FIG. 21 explains the configuration of the upper casing of the mobile phone. It is explanatory drawing for.
This example is greatly different from the above-described second embodiment in that it is branched at a predetermined portion of the annular groove and extends to the peripheral edge of the casing.
Since the configuration other than this is substantially the same as the configuration of the second embodiment described above, the description thereof will be simplified.

The upper unit of the mobile phone of this example is mounted on the flat upper casing 65 and the upper casing 65, respectively, and is composed of a liquid crystal display device or the like, for example, a display section 5 on which a standby screen, a function setting screen or the like is displayed. And a sub-operation unit 6 for performing operations in the degenerated state, and a receiving unit 7 including a speaker for outputting received voices. Note that a touch panel is incorporated in the display unit 5.
In the upper housing 65, an upper wiring board on which various electronic components constituting the display unit 5, the sub operation unit 6 and the like are mounted is mounted.

Further, as shown in FIG. 21, an opening 66 for drawing out an FPC as a flexible wiring board is formed on the back surface side (lower unit side) of the upper housing 65. Further, at the edge of the opening 66, a waterproof rib 67 is formed in an annular shape so as to surround the opening 66 so as to protrude toward the lower housing 72.
Further, an annular groove 68 is formed on the outer side (root) of the waterproof rib 67 so as to surround the waterproof rib 67, and further branched from a predetermined portion of the annular groove 68 to the peripheral edge of the upper housing 65. Branch groove portions 69a, 69b and 69c for discharging foreign matter are provided.
In this example as well, a recess 66a is formed in a region in front of the waterproof rib 67 and the annular groove 68 on the lower end edge side (transmission part side of the lower unit) of the opening 66, and a predetermined height of the waterproof rib 67 is secured. Is done.

  In addition, the lower unit is mounted on the flat lower casing 72 and the lower casing 72, respectively, and the control unit 14 that controls each component of the mobile phone body, the processing program executed by the control unit 14, various data, and the like A storage unit 15 for storing information, a main operation unit 16 having an operation surface exposed at the time of extension and having a number of key buttons and the like for inputting numbers and characters, and an antenna 17 for transmitting and receiving radio waves. And a radio communication unit 18 used for transmitting and receiving radio waves via the antenna 17 and performing telephone calls and data communication in accordance with a predetermined protocol, and a transmitter unit 19 including a microphone for inputting a transmitted voice. It has become.

In the lower housing 72, a lower wiring board on which various electronic components constituting the control unit 14, the main operation unit 16, the wireless communication unit 18, and the like are mounted is mounted.
In addition, an opening 73 for drawing out the FPC is formed on the surface side (upper unit side) of the lower housing 72. Further, at the edge of the opening 73, a waterproof rib 74 is formed in an annular shape so as to surround the opening 73 so as to protrude toward the upper housing 65.
An annular groove 75 is formed on the outer side (root) of the waterproof rib 74 so as to surround the waterproof rib 74. Further, branch grooves 76a, 76b and 76c are formed which branch from a predetermined portion of the annular groove 75 to the peripheral edge of the lower housing 72 and discharge foreign matter.
In this example as well, a recess 72 a is formed in a region in front of the waterproof rib 74 and the annular groove 75 on the lower edge side (sending part side) of the opening 73, and a predetermined height of the waterproof rib 74 is ensured.

  20 and 21, the waterproof structure of this example has a slight gap between the back surface of the upper housing 65 in which the opening 66 is formed and the surface of the lower housing 72 in which the opening 73 is formed. In order to prevent foreign matter such as moisture and dust from entering from the peripheral edge of the opening 66 and the opening 73, the foreign matter such as moisture and dust is prevented from entering the opening 66 and the opening 73, respectively. The waterproof rib 67 and the waterproof rib 74 are respectively provided in an annular shape so as to surround the waterproof rib 67 and the annular groove portion 68 on the outer side of the waterproof rib 67 and the waterproof rib 74, An annular groove portion 75 is formed, and branched groove portions 69a, 69b, and 69c for branching from a predetermined portion of the annular groove portion 68 to the peripheral edge portion of the upper housing 65 for discharging foreign matter are provided. Branch from the part of Branch grooves 76a, 76b, and 76c are formed to the peripheral edge of the lower housing 72 to discharge foreign matter, and the waterproof rib 67 and the distal end of the waterproof rib 74 are respectively connected to the surface of the lower housing 72 and The upper casing 65 is formed and schematically configured so as not to contact the back surface.

  As a result, even if a foreign object has entered through a slight gap between the upper housing 65 and the lower housing 72, the opening 66 and the opening 73 are seen in front of the foreign material in both the contracted state and the extended state. When the annular grooves 68 and 75 or the branched grooves 69a, 69b, 69c, 76a, 76b, and 76c that are formed are first caught and caught, and the foreign matter further moves toward the opening 66 and the opening 73 side, substantially. The waterproof rib 66 and the waterproof rib 73 whose heights are increased prevent the opening 66 and the opening 73 from entering the upper housing 65 and the lower housing 72, respectively.

Furthermore, the foreign material caught by the annular groove 68 (75) or the branch grooves 69a, 69b, 69c (76a, 76b, 76c) is the annular groove 68 (75), and the branch grooves 69a, 69b, 69c (76a, 76b, 76c). ) And the branch groove portions 69a, 69b, 69c (76a, 76b, 76c) are extended to the peripheral edge portion of the upper housing 65 (lower housing 72), whereby the upper housing 65 ( The possibility of being discharged outside the lower housing 72) is increased.
Also in this example, since the waterproof rib 67 and the waterproof rib 74 do not contact the lower housing 65 and the upper housing 72, smooth sliding operation is not hindered.

According to the configuration of this example, substantially the same effect as that of the second embodiment described above can be obtained.
In addition, since the groove portion extends to the peripheral edge portion of the housing, it can be discharged even if foreign matter such as moisture enters, so that the waterproof property can be further improved.

FIG. 22 is a cross-sectional view showing a configuration of a slide type mobile phone according to a fourth embodiment of the present invention, showing a contracted state, and FIG. 23 is an enlarged view of a portion M in FIG. FIG. 24 is an enlarged sectional view showing an N portion of FIG. 22 in an enlarged manner.
This example is greatly different from the first embodiment described above in that the tip of the waterproof rib is bent in an L-shape toward the outside with respect to the opening.
Since the other configuration is substantially the same as the configuration of the first embodiment described above, the description thereof will be simplified.

As shown in FIG. 22, the cellular phone 1 </ b> B of this example is configured by an upper unit 78 and a lower unit 79 being slidably coupled to each other.
Further, an upper wiring board 82 on which various electronic components constituting the display unit 5, the sub operation unit 6, and the like are mounted is mounted in the upper casing 81 of the upper unit 78.
Further, an opening 84 for drawing out the FPC 83 as a flexible wiring board is formed on the back surface side (lower unit 79 side) of the upper housing 81. Further, at the edge of the opening 84, a waterproof rib 85 is formed in an annular shape so as to surround the opening 84 toward the lower housing 87. As shown in FIG. 24, the waterproof rib 85 of this example is formed such that its tip end portion is bent in an L shape toward the outside with respect to the opening 84.
In addition, a recess is formed in a region in front of the waterproof rib 85 on the lower end edge side of the opening 84 (the transmission unit side of the lower unit 79), and a predetermined height of the waterproof rib 85 is secured.

A lower wiring board 88 on which various electronic components constituting the control unit 14, the main operation unit 16, the wireless communication unit 18, and the like are mounted is mounted in the lower casing 87 of the lower unit 79.
Further, an opening 89 for drawing out the FPC 83 is formed on the surface side (upper unit 2 side) of the lower housing 13. Further, at the edge of the opening 89, a waterproof rib 91 is formed in an annular shape so as to surround the opening 89 so as to protrude toward the upper housing 81. As shown in FIG. 23, the waterproof rib 91 of this example is formed such that its tip end portion is bent in an L shape outward with respect to the opening 84.
In this example as well, a recess is formed in the area in front of the waterproof rib 91 on the lower end edge side (sending part side) of the opening 89, and a predetermined height of the waterproof rib 91 is ensured.

  The waterproof structure of this example has a foreign matter such as moisture or dust from the peripheral edge of a slight gap between the back surface of the upper housing 81 in which the opening 84 is formed and the surface of the lower housing 87 in which the opening 89 is formed. In order to prevent this foreign matter from entering the opening 84 and the opening 89, respectively, the front end portion of the opening 84 and the opening 89 surround the opening 84 and the opening 89, respectively. Waterproof ribs 85 and 91 bent in an L shape toward the outside with respect to the openings 84 and 89 are provided in an annular shape, and the ends of the waterproof rib 85 and the waterproof rib 91 are respectively the above-described portions of the lower housing 87. The front surface and the upper housing 81 are formed and generally configured so as not to contact the back surface.

Thereby, even if a foreign object has entered through a slight gap between the upper housing 81 and the lower housing 87, the opening 84 and the opening 89 are in front of the foreign material as viewed from the foreign material in both the contracted state and the extended state. The formed waterproof rib 85 and waterproof rib 91 prevent the opening 85 and the opening 89 from entering the upper housing 81 and the lower housing 87, respectively. Furthermore, since the tip end portions of the waterproof ribs 85 and 91 are bent in an L shape toward the outside with respect to the openings 84 and 89, even if foreign matter reaches the waterproof ribs 85 and 91, the openings 85 and 91 In order to go to 89, it is necessary to get over the bent portion, so that it is more difficult for the foreign matter to enter the opening 84 and the opening 89 than in the first embodiment.
Here, since the waterproof rib 85 and the waterproof rib 91 do not come into contact with the lower casing 87 and the upper casing 81, smooth sliding operation is not hindered.

According to the configuration of this example, substantially the same effect as that of the first embodiment described above can be obtained.
In addition, since the tip portion of the rib is L-shaped, entry of foreign matter into the inside can be further suppressed.

FIG. 25 is a diagram showing a configuration of a lower unit of a slide type mobile phone according to a fifth embodiment of the present invention, FIG. 26 is a diagram showing a configuration of an upper unit of the mobile phone, and FIG. It is an expanded sectional view which expands and shows the structure of the principal part of a mobile telephone.
This example is greatly different from the first embodiment described above in that the waterproof rib is provided around the opening twice.
Since the other configuration is substantially the same as the configuration of the first embodiment described above, the description thereof will be simplified.

As shown in FIG. 26, an opening 95a for drawing out the FPC is formed on the back surface side (lower unit 96 side) of the upper housing 95 of the upper unit 94 of the cellular phone of this example. Further, as shown in the figure, at the edge of the opening 95 a, waterproof ribs 95 p and 95 q are formed in a state of projecting toward the lower housing 97 in a double annular shape so as to surround the opening 95 a.
Further, as shown in FIG. 25, an opening 97a for drawing out the FPC is formed on the surface side (upper unit 95 side) of the lower casing 97 of the lower unit 96. Further, as shown in FIG. 25 and FIG. 27, waterproof ribs 97p and 97q are formed on the edge of the opening 97a so as to surround the opening 97a in a state of protruding toward the upper housing 95. ing.

  As a result, even if a foreign object has entered through a slight gap between the upper housing 95 and the lower housing 97, the opening 95a and the opening 97a are viewed in front of the foreign material in both the contracted state and the extended state. The formed waterproof ribs 95p and 95q and waterproof ribs 97p and 97q prevent the opening 95a and the opening 97a from entering the upper housing 95 and the lower housing 97, respectively. In order for the foreign matter to go to the openings 95a and 97a, the waterproof ribs 95p and 95q and the waterproof ribs 97p and 97q must be overcome. Intrusion is even more difficult.

According to the configuration of this example, substantially the same effect as that of the first embodiment described above can be obtained.
In addition, since the waterproof ribs are provided twice around the opening, it is possible to further suppress the intrusion of foreign matter into the inside.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Are also included in the present invention.
For example, in the above-described embodiment, the case of sliding along the length direction of the casing has been described. However, the present invention is not limited to this, and it may be configured to be slidable along the width direction.
Further, the sliding is not limited to the combination of the guide member and the sliding member (slider), and for example, a rack and a pinion may be used to displace each other. In this case, you may comprise so that a slide operation can be performed automatically using a motor. Further, the groove portion of the slide mechanism is not limited to a U-shaped cross section, and may be provided with a retaining function as a wedge shape.

Further, the FPC may be directly connected to the upper wiring board or the lower wiring board by solder (thermocompression bonding) without using a connector.
Further, in Example 2 and Example 3, the depth and width of the groove part are set large so that the cross-sectional area of the groove part becomes as large as possible according to the arrangement state of the components mounted in the housing. The probability of catching foreign matter and the probability of being discharged may be increased.
Also in Example 2 and Example 3, a waterproof rib having an L-shaped tip may be employed. Moreover, you may make it form an annular groove part in multiple.

Further, in Example 3, when the mobile phone is held horizontally, for example, the bottom surface is inclined so as to be lowered toward the peripheral edge of the casing to form a branch groove portion in order to easily discharge moisture and the like. You may make it do.
Further, in Example 4, the shape of the tip of the waterproof rib is not limited to the L shape, and may be other shapes such as a spiral shape, and even in the case of the L shape, the length of the tip and the height of the rib are It may be set as long or as high as possible according to the arrangement state of the components mounted in the housing.
For example, the tip of the waterproof rib may be bent outward with respect to the opening, and the length of the tip may be relatively long to form a hook shape. Thus, even if a foreign object has entered through a slight gap between the upper housing and the lower housing, the waterproof rib formed in front of the opening as viewed from the foreign material in both the degenerated state and the extended state This prevents entry from the opening into the upper housing and the lower housing. Furthermore, the tip of the waterproof rib is bent outward with respect to the opening and has a bowl shape, so that even if the foreign matter reaches the waterproof rib, it has a bowl shape to reach the opening. Since it is necessary to get over the bent portion, it becomes even more difficult for the foreign matter to enter the inside through the opening. Accordingly, it is possible to further suppress the intrusion of foreign matter into the inside.
In the fifth embodiment, the waterproof ribs are not limited to double, but may be provided in multiples of three or more.

  As a portable electronic device, in addition to a cellular phone, the present invention can be applied to a case where a PHS terminal having a data communication function, a PDA, or a portable computer is used.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a configuration of a slide type mobile phone according to a first embodiment of the present invention, and shows a degenerated state. It is a side view which shows the structure of the mobile telephone, Comprising: It is a figure which shows the degenerated state. It is a front view which shows the structure of the mobile phone, and is a figure which shows the extended state. It is a side view which shows the structure of the mobile phone, and is a figure which shows the extended state. It is a block diagram which shows the structure of the mobile phone. It is sectional drawing along the AA line of FIG. It is sectional drawing along the BB line of FIG. FIG. 4 is a cross-sectional view taken along the line CC in FIG. 3. It is an expanded sectional view which expands and shows the F section of FIG. It is an expanded sectional view which expands and shows the G section of FIG. FIG. 3 is a cross-sectional view taken along line DD in FIG. 2. It is sectional drawing along the EE line of FIG. It is sectional drawing which shows the structure of the slide type | mold mobile phone which is 2nd Example of this invention, Comprising: It is a figure which shows the degenerated state. It is sectional drawing along the HH line of FIG. It is sectional drawing which shows the structure of the mobile phone, Comprising: It is a figure which shows the extended state. It is an expanded sectional view which expands and shows the I section of FIG. It is an expanded sectional view which expands and shows the J section of FIG. It is sectional drawing along the KK line | wire of FIG. It is sectional drawing along the LL line of FIG. It is explanatory drawing for demonstrating the structure of the lower housing | casing of the slide type mobile telephone which is 3rd Example of this invention. It is explanatory drawing for demonstrating the structure of the upper housing | casing of the mobile phone. It is sectional drawing which shows the structure of the slide type | mold mobile phone which is 4th Example of this invention, Comprising: It is a figure which shows the degenerated state. It is an expanded sectional view which expands and shows the M section of FIG. It is an expanded sectional view which expands and shows the N section of FIG. It is a figure which shows the structure of the lower unit of the slide type mobile telephone which is 5th Example of this invention. It is a figure which shows the structure of the upper unit of the mobile phone. FIG. 3 is an enlarged cross-sectional view showing an enlarged configuration of a main part of the mobile phone. It is a front view which shows the structure of the conventional slide type mobile telephone, Comprising: It is a figure which shows the expanded state. It is sectional drawing which shows the structure of the mobile phone, Comprising: It is a figure which shows the state degenerated. FIG. 30 is a cross-sectional view taken along the line P-P in FIG. 29. It is sectional drawing along the QQ line of FIG.

Explanation of symbols

1,1A, 1B Mobile phones (portable electronic devices)
2, 41, 78, 94 Upper unit 3, 42, 79, 96 Lower unit 4, 43, 65, 81, 95 Upper casing (first casing)
8, 44, 82 Upper wiring board (part of the first circuit section)
9, 45, 66, 84, 95a Opening (first opening)
11, 46, 67, 85, waterproof rib (first barrier)
13, 47, 72, 87, 97 Lower housing (second housing)
21, 51, 88 Lower wiring board (part of second circuit portion)
22, 49, 83 FPC (flexible wiring board)
23, 52, 73, 89, 97a Opening (second opening)
24, 53, 74, 91, waterproof rib (second barrier)
28, 59 Slide mechanism 31, 64 Waterproof structure (waterproof structure for portable electronic devices)
48, 68 annular groove (first annular groove)
54,75 Annular groove (second annular groove)
69a, 69b, 69c Branching groove (first branching groove)
76a, 76b, 76c Branching groove (second branching groove)
95p, 95q waterproofing rib (part of the first annular barrier group)
97p, 97q waterproofing rib (part of the second annular barrier group)

Claims (8)

The first housing and the second housing have a waterproof structure for a portable electronic device in which the first housing and the second housing are slidably coupled.
The first circuit portion mounted on the first housing and the second circuit portion mounted on the second housing are electrically connected by a flexible wiring board, and the flexible wiring board is Pulled out from the first opening and the second opening respectively formed on opposite sides of the first housing and the second housing;
At the edge portions of the first opening and the second opening, liquid flows into the first casing or the second casing from the first opening and the second opening, respectively. A waterproof structure for a portable electronic device, wherein the first barrier portion and the second barrier portion for preventing entry are formed so as to surround the first opening and the second opening. .   The first barrier part and the second barrier part are formed so as to maintain a non-contact state with respect to the second casing and the first casing, respectively. Item 10. A waterproof structure for a portable electronic device according to Item 1.   The heights of the first barrier portion and the second barrier portion are such that liquid reaches the first opening and the second opening across the first barrier portion and the second barrier portion, respectively. The waterproof structure for a portable electronic device according to claim 1, wherein the waterproof structure is set to a predetermined height to prevent this.   The tips of the first barrier portion and the second barrier portion are formed so as to be bent outward with respect to the first opening and the second opening, respectively. The waterproof structure of the portable electronic device according to 1, 2, or 3.   The first barrier portion and the second barrier portion include a first annular barrier group and a second annular barrier group that are formed in multiple portions at the edge of the first opening and the second opening. The waterproof structure for a portable electronic device according to any one of claims 1 to 4.   A first annular groove portion and a second annular groove portion are formed outside the first barrier portion and the second barrier portion so as to surround the first barrier portion and the second barrier portion, respectively. The waterproof structure for a portable electronic device according to any one of claims 1 to 5, wherein the waterproof structure is provided.   The first branch groove portion and the second branch branch from predetermined portions of the first annular groove portion and the second annular groove portion to the peripheral portions of the first housing and the second housing, respectively. The waterproof structure for a portable electronic device according to claim 6, wherein a groove is formed. A portable electronic device comprising the waterproof structure for the portable electronic device according to claim 1.

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