JP4670652B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device in which a first housing and a second housing are pivotally supported so as to be freely opened and closed, and in particular, an insertion member such as a flexible substrate is inserted from the first housing to the second housing. It relates to electronic equipment.

  Currently, in electronic devices such as mobile phone terminals, there are products in which a first housing and a second housing can be opened and closed in order to improve portability. Here, such a cellular phone terminal will be described below as an example of a conventional electronic device with reference to FIGS.

  As shown in FIG. 7, the cellular phone terminal 100 exemplified here includes a first casing 110 and a second casing 120, and the first / second casings 110 and 120 can be freely opened and closed. It is pivotally supported. The first / second casings 110 and 120 are each formed in a flat and elongated box shape, and the front side covers 111 and 121 and the back side covers 112 and 122 are formed as main components.

  In order to simplify the description below, as shown in FIG. 7, one of the axial directions of the shaft support is on the left side, the other is on the right side, the direction of the front side covers 111, 121 is downward, and the back side covers 112, 122 The direction of the first housing 110 is defined as the front direction, and the direction of the second housing 120 is defined as the rear direction.

  The front covers 111 and 121 are each formed with an opening hole in substantially the entire surface thereof, and a display unit (not shown) such as an LCD (Liquid Crystal Display) is disposed in the first housing 110 there. In the second casing 120, a keyboard unit 132 is disposed.

  The display unit and the keyboard unit 132 are respectively mounted on the surfaces of PCBs (Printed Circuit Boards) 133 and 134, and these are connected by an FCB (Flexible Circuit Board) 136 which is a flexible substrate.

  The front cover 111 of the first housing 110 has first / second engagement recesses 114 and 115 formed on the left and right rear ends of the upper surface, and the front cover 121 of the second housing 120 has a circular shape at the center of the front end. An annular connecting portion 123 is formed. First / second engagement recesses 124, 125 are also formed on the left and right end surfaces of the connecting portion 123. These first / second engagement recesses 114, 115, 124, 125 are linear in the left-right direction. It is formed so as to communicate with.

  In the cellular phone terminal 100, the click unit 140 is engaged with the first engagement recesses 114, 124 of the first / second housings 110, 120, and the second engagement recesses 115, 125 are hinged. When the member 150 and the bearing member 160 are engaged, the first / second housings 110 and 120 are pivotally supported so as to be freely opened and closed.

  More specifically, the click unit 140 includes a first member 141 that engages with the first engagement recess 114 of the first housing 110 so as not to rotate from above, and a first engagement of the second housing 120. It has the 2nd member 142 engaged with the recessed part 124 so that rotation is impossible from the left. Since these first / second members 141 and 142 are assembled via a spring (not shown) or the like, they rotate by a predetermined angle together with a so-called click feeling.

  The hinge member 150 has an odd-shaped engaging convex portion 151 and a cylindrical shaft-shaped portion 152 formed continuously in the left-right direction, and the engaging convex portion 151 has a pair of outer flat surfaces 153 at the front and rear. It is formed in a U-shaped cross-sectional shape. The shaft-like portion 152 of the hinge member 150 has a cylindrical outer peripheral surface 154 coaxially with the axial direction, and an annular flange portion 155 is formed on the outer peripheral surface 154.

  The second engaging recess 115 of the first housing 110 is also formed in a U-shaped cross-sectional shape having a pair of inner planes (not shown) at the front and rear, so that the outer plane 153 is in contact with the inner plane. By contacting, the engaging convex portion 151 of the hinge member 150 is engaged with the second engaging concave portion 115 of the first housing 110 so as not to rotate from above.

  As shown in FIG. 8, the bearing member 160 is formed in a cylindrical shape, and an outer flat surface 162 is formed on the outer peripheral surface 161 below. Since the second engaging recess 125 of the second housing 120 is also formed with an inner flat surface (not shown) below the circular inner peripheral surface, the bearing member 160 is the second of the second housing 120. Is engaged with the engagement recess 125 from the right side so as not to rotate.

  The bearing member 160 has a cylindrical inner peripheral surface formed with a bearing portion 163 on the right end surface. An annular step portion is formed as an annular step portion in the opening portion of the inner peripheral surface of the bearing portion 163. 164 is formed. Then, when the flange portion 155 is engaged with the annular step portion 164 and the shaft portion 152 is engaged with the bearing portion 163, the shaft portion 152 of the hinge member 150 is rotated from the right side to the bearing member 160. Engage freely.

  In the cellular phone terminal 100, as described above, since the PCBs 133 and 134 built in the first / second housings 110 and 120 are connected by the FCB 136, the FCB 136 includes the hinge member 150 and the bearing member. The inside of 160 is inserted.

  More specifically, the hinge member 150 has a first opening 156 formed on the upper surface thereof communicating with the opening of the engagement recess 115 in a state of being engaged with the engagement recess 115 from above. A second opening 157 is formed on the left end face, and the first opening 156 and the second opening 157 are communicated with each other.

  The bearing member 160 is formed as a third opening at a position where the bearing portion 163 having a cylindrical inner peripheral surface communicates with the second opening 157 of the hinge member 150 as it is. A fourth opening 165 is formed at a position on the rear side in a state of being engaged with 125.

  Further, the connection portion 123 of the second housing 120 also has a housing opening 126 formed on the right side of the rear surface, and the fourth opening 165 and the housing opening are in a state where the bearing member 160 is engaged with the engagement recess 125. 126 communicates.

  That is, in the mobile phone terminal 100, the first opening 156 of the hinge member 150 that is non-rotatably mounted on the first housing 110 communicates with the internal space of the first housing 110, and the second housing A fourth opening 165 of the bearing member 160 that is non-rotatably attached to the body 120 communicates with the internal space of the second housing 120.

  And since the space which communicates from the 1st opening 156 of the hinge member 150 to the 4th opening 165 of the bearing member 160 is ensured, FCB136 is penetrated there. The FCB 136 is formed in a crank shape because it is inserted into the communication space formed of a plurality of parts as described above.

  Further, in this cellular phone terminal 100, the bracket 116 is attached to the upper surface of the rear end of the first casing 110 with the screws 117 so that the click unit 140 and the hinge member 150 do not fall off from the first casing 110. Is retained.

  In the mobile phone terminal 100 having the above-described structure, the first / second housings 110 and 120 are pivotally supported by the click unit 140, the hinge member 150, and the bearing member 160 so that they can be opened and closed. The operability can be improved by opening the two housings 110 and 120, and the occupied volume can be reduced by closing the first / second housings 110 and 120 when being carried.

  Moreover, as described above, the PCBs 133 and 134 built in the first / second housings 110 and 120 are connected by the FCB 136, and the FCB 136 is connected to the hinge member 150 and the bearing member 160. Since the space is inserted, the first / second housings 110 and 120 can be opened and closed without exposing the FCB 136 to the outside.

  In the mobile phone terminal 100 described above, for example, the first / second housings 110 and 120 are made of polycarbonate, and the hinge member 150 and the bearing member 160 are made of polyacetal.

  The hinge member 150 and the bearing member 160 made of polyacetal have a lower frictional resistance than that of polycarbonate, which is the material of the first / second housings 110 and 120, and have better wear resistance than polycarbonate.

For this reason, the above-described mobile phone terminal 100 can smoothly open and close the first / second housings 110 and 120, and troubles occur due to wear of the hinge member 150 and the bearing member 160 even when the first and second housings 110 and 120 are repeatedly opened and closed. There is no. There are various proposals for the mobile phone terminal 100 having the above-described structure (see, for example, Patent Documents 1 to 3).
JP-A-2005-311003 JP 2005-311004 A JP-A-2005-311005

  In the mobile phone terminal 100 described above, the first / second casings 110 and 120 can be smoothly opened and closed, and the hinge member 150 and the bearing member 160 can be connected to the first / second housing in order to prevent troubles from being repeatedly opened and closed. The second housings 110 and 120 are made of a different material and are assembled to the first / second housings 110 and 120.

  However, since it is necessary to incorporate such a small bearing member 160 into the engagement recess 125 of the second housing 120, the above-described mobile phone terminal 100 has many parts and low assemblability. In particular, the bearing member 160 is generally cylindrical and it is not easy to confirm the directionality. However, when the bearing member 160 is incorporated into the engagement recess 125 of the second housing 120, the fourth opening 165 of the bearing member 160 and the second housing 120. Since it is necessary to match the position with the housing opening 126, the operation is complicated.

The electronic device of the present invention is an electronic device in which a first housing and a second housing are pivotally supported so as to be freely opened and closed, and is a hinge member that is non-rotatably engaged with one end of the first housing. Is directly engaged with one end of the second housing in a freely rotatable manner, and the hinge member is formed with a shaft-shaped portion having a cylindrical outer peripheral surface coaxially with the axial direction of the shaft support. In the two housings, a bearing portion having a cylindrical inner peripheral surface coaxially with the axial direction of the shaft support is integrally formed at one end, and the shaft-like portion of the hinge member is pivoted on the bearing portion of the second housing. The hinge member is rotatably engaged from the center direction, and the hinge member has an engagement convex portion having at least one outer plane parallel to the axial direction and continuously formed in the axial direction with the axial portion. The first casing is integrally formed with an engagement recess having an inner plane parallel to the axial direction and in contact with the outer plane at one end. The engaging projection is engaged in a non-rotatable manner from a direction orthogonal to the axial direction, and the hinge member is in the first opening at a position communicating with the opening of the engaging recess while being engaged with the engaging recess. The second opening is formed in the end surface of the shaft-like portion, and the first opening and the second opening are communicated with each other . Therefore, in the electronic device of the present invention, parts such as a bearing member are not interposed between the hinge member and the second housing.

  In the electronic device of the present invention, the hinge member that is non-rotatably engaged with one end of the first housing is directly engaged with the one end of the second housing so as to be freely rotatable. In the electronic device, since parts such as a bearing member are not interposed between the hinge member and the second housing, the number of parts can be reduced and the assemblability can be improved.

  An embodiment of the present invention will be described below with reference to FIGS. However, the same parts as those of the conventional example described above with respect to the present embodiment are denoted by the same names and symbols, and detailed description thereof is omitted.

  In this embodiment, as shown in FIG. 1, the front, rear, left, right and up directions are defined and described. However, this is provided for the sake of simplicity, and is used when the present invention is implemented. The direction at the time of manufacture and use is not limited.

  As shown in FIG. 1, the electronic device according to the present embodiment is a mobile phone terminal 200 in which a first housing 210 and a second housing 220 are pivotally supported so as to be freely opened and closed. A hinge member 250 that is non-rotatably engaged with one end of the second housing 220 is directly engaged with one end of the second housing 220 so as to be freely rotatable.

  More specifically, in the mobile phone terminal 200 of the present embodiment, the first casing 210 and the second casing 220 are pivotally supported so as to be openable and closable like the conventional mobile phone terminal 100. The second casings 210 and 220 are formed in a flat and elongated box shape with the front side covers 211 and 221 and the back side covers 212 and 222 as main components.

  A display unit (not shown) and a keyboard unit 232 are individually attached to the front covers 211 and 221 of the first / second housings 210 and 220, and the PCBs 233 and 234 on which the display units are mounted are flexible. They are connected by FCB 236 which is a substrate.

  The front cover 211 of the first casing 210 has first / second engagement recesses 214 and 215 formed on the left and right rear ends of the upper surface, and the click unit 240 and the hinge member are formed in these engagement recesses 214 and 215. 250 are engaged with each other in a non-rotatable manner.

  The front cover 221 of the second housing 220 has an annular connecting portion 223 formed at the center of the front end. As shown in FIG. 3, the click unit 240 also rotates on the left end surface of the connecting portion 223. An engaging recess 224 that is impossiblely engaged is formed.

  However, in the mobile phone terminal 200 of the present embodiment, unlike the mobile phone terminal 100 of the conventional example, as shown in FIG. 2, the right end surface of the connecting portion 223 of the front cover 221 of the second housing 220 is not provided. The engaging recess is not formed, and the bearing portion 225 is formed.

  For this reason, the mobile phone terminal 200 of the present embodiment does not have a bearing member interposed between the hinge member 250 and the second housing 220, and the hinge member 250 is directly attached to the bearing portion 225 of the second housing 220. It is pivotably engaged.

  More specifically, the hinge member 250 has an odd-shaped engaging convex portion 251 and a cylindrical shaft-shaped portion 252 formed continuously in the left-right direction, and the engaging convex portion 251 has a pair of outer planes. It is formed in a U-shaped cross-sectional shape having 253 at the front and rear. The shaft-like portion 252 of the hinge member 250 has a cylindrical outer peripheral surface 254 coaxially with the axial direction, and an annular flange portion 255 is formed on the outer peripheral surface 254.

  Since the second engaging recess 215 of the first housing 210 is also formed in a U-shaped cross-sectional shape having a pair of inner planes (not shown) at the front and rear, the outer plane 253 is in contact with the inner plane. By making contact, the engaging convex portion 251 of the hinge member 250 is engaged with the second engaging concave portion 215 of the first housing 210 so as not to rotate from above.

  As shown in FIG. 2, the bearing portion 225 of the second housing 220 has a cylindrical inner peripheral surface, and an annular step portion 226 is formed as an annular step portion in the opening. . The flange portion 255 is engaged with the annular step portion 226 and the shaft portion 252 is engaged with the bearing portion 225, whereby the shaft portion 252 of the hinge member 250 is engaged with the bearing portion 225 of the second housing 220. Is engaged so as to be rotatable from the right side.

  In this mobile phone terminal 200 as well, the hinge member 250 has a first opening 256 formed on the upper surface thereof communicating with the opening of the engagement recess 215 in a state of being engaged with the engagement recess 215 from above, and the axial shape A second opening 257 is formed on the left end surface of the portion 252, and the first opening 256 and the second opening 257 are communicated with each other.

  In addition, the second housing 220 is formed with a bearing portion 225 having a cylindrical inner peripheral surface as a third opening, and a fourth opening 227 communicating with the bearing portion 225 is formed on the right side of the rear surface of the connecting portion 223. Has been. For this reason, also in the mobile phone terminal 200 of this embodiment, since a space is established from the first opening 256 of the hinge member 250 to the fourth opening 227 of the second housing 220, the FCB 236 is inserted there. .

  In the mobile phone terminal 200 of this embodiment, the click unit 240 and the hinge member 250 are not dropped from the first casing 210 because the bracket 216 is attached to the upper surface of the rear end of the first casing 210 with the screws 217. So that it is held.

  In the mobile phone terminal 200 of this embodiment, for example, the first / second casings 210 and 220 are made of polycarbonate, and the hinge member 250 is made of polyacetal.

  In the configuration as described above, the cellular phone terminal 200 of the present embodiment also improves the operability by opening the first / second casings 210 and 220 when in use, like the cellular phone terminal 100 of one conventional example. The first / second casings 210 and 220 can be closed when carrying, and the occupied volume can be reduced.

  In addition, as described above, the PCBs 233 and 234 built in the first / second housings 210 and 220 are connected by the FCB 236. The FCB 236 is inserted through the communication space formed in the hinge member 250. Therefore, the first / second casings 210 and 220 can be opened and closed without exposing the FCB 236 to the outside.

  And in the mobile phone terminal 200 of this embodiment, unlike the mobile phone terminal 100 of one conventional example, the shaft-like portion 252 of the hinge member 250 is directly connected to the bearing portion of the second housing 220 without the bearing member interposed therebetween. Since it is engaged with 225, the number of parts is reduced and the assemblability is good.

  In particular, it is not necessary to assemble a cylindrical bearing member into the small hole of the second housing 220, and it is not necessary to align the opening of the bearing member with the fourth opening 227 of the second housing 220. The mobile phone terminal 200 is very easy to assemble.

  Note that in the mobile phone terminal 200 of this embodiment, the hinge member 250 rotates in a state of being directly engaged with the second casing 220 as described above, and therefore, the present inventor has a first / second casing made of polycarbonate. The bodies 210 and 220 and the polyacetal hinge member 250 were actually manufactured and tested for durability by repeated opening and closing.

  Then, even in the structure in which the hinge member 250 is directly engaged with the second housing 220, the frictional resistance is as low as when the bearing member is present, and the first / second housings 210 and 220 can be opened and closed smoothly. I was able to confirm that Further, it has been confirmed that even if the first / second housings 210 and 220 are repeatedly opened and closed, no troubles due to wear of the hinge member 250 or the second housing 220 occur.

  The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, in the above embodiment, the keyboard unit 232 is mounted on the second casing 220 and the display unit is mounted on the first casing 210. However, the mobile phone terminal 300 illustrated in FIG. In addition, it is possible that the keyboard unit 232 is mounted on the first casing 310 and the display unit (not shown) is mounted on the second casing 320.

  Similarly, in the above embodiment, the FCB 236 connected to the PCB 233 of the first casing 210 is illustrated as being inserted through the hinge member 250. However, like the mobile phone terminal 300 illustrated in FIG. The FCB 236 connected to the PCB 233 can be inserted into the hinge member 250.

  In the above embodiment, the member to be inserted into the hinge member 250 is exemplified as the FCB 236. However, it is also possible to insert a communication cable, or to insert the FCB and the communication cable (both not shown). .

  Furthermore, although the mobile phone terminal 200 is exemplified as the electronic device in the above embodiment, the present invention is applied to various electronic devices in which the first / second housing is pivotally supported so as to be freely opened and closed and the FCB or the like is inserted into the hinge member. For example, a PDA (Personal Digital Assistance) or a notebook personal computer is also possible.

  In the above embodiment, the first / second casings 210 and 220 are made of polycarbonate, and the hinge member 250 is made of polyacetal. However, for example, they are made of other resin. It is also possible.

It is a disassembled perspective view which shows the assembly structure of the mobile telephone terminal which is an electronic device of embodiment of this invention. It is a disassembled perspective view which shows the assembly structure of the 2nd housing | casing and hinge member of a mobile telephone terminal. It is a disassembled perspective view which shows the assembly structure of a 2nd housing | casing, a hinge member, and a click unit. It is a perspective view which shows the state by which the hinge member was assembled | attached to the 2nd housing | casing. It is a vertical front view which shows the internal structure of the connection part of a 1st / 2nd housing | casing. It is a disassembled perspective view which shows the assembly structure of the mobile telephone terminal of one modification. It is a disassembled perspective view which shows the assembly structure of the mobile telephone terminal of one prior art example. It is a disassembled perspective view which shows the assembly structure of a hinge member and a bearing member.

Explanation of symbols

200,300 Mobile phone terminal 210 First housing 215 Engaging recess 220 Second housing 225 Bearing portion 226 Annular step 227 Fourth opening 236 FCB
250 Hinge member 251 Engaging convex portion 252 Shaft-shaped portion 253 Outer plane 254 Outer peripheral surface 255 Flange portion 256 First opening 257 Second opening

Claims (7)

An electronic device in which the first housing and the second housing are pivotally supported so as to be freely opened and closed,
A hinge member that is non-rotatably engaged with one end of the first housing is directly engaged with one end of the second housing so as to be freely rotatable ,
The hinge member is formed with a shaft-like portion having a cylindrical outer peripheral surface coaxially with the axial direction of the shaft support,
The second housing is integrally formed at one end with a bearing portion having a cylindrical inner peripheral surface coaxially with the axial direction of the shaft support,
The shaft-like portion of the hinge member is rotatably engaged with the bearing portion of the second housing from the axial direction,
In the hinge member, an engagement convex portion having at least one outer plane parallel to the axial direction is formed continuously in the axial direction and the axial direction,
The first housing is integrally formed at one end with an engaging recess having an inner plane parallel to the axial direction and in contact with the outer plane.
The engagement convex portion of the hinge member is engaged with the engagement concave portion of the first housing in a non-rotatable manner from a direction orthogonal to the axial direction,
The hinge member has a first opening formed at a position communicating with the opening of the engaging recess when engaged with the engaging recess, and a second opening is formed at an end surface of the shaft-shaped portion. An electronic device in which the first opening and the second opening are in communication. The hinge member has an annular flange formed on the outer peripheral surface of the shaft-shaped portion,
In the second housing, an annular step portion is formed as an annular step portion in the opening portion of the inner peripheral surface of the bearing portion,
The electronic device according to claim 1 , wherein the flange portion of the hinge member is rotatably engaged with an annular step portion of the second housing. The second housing has a third opening formed at a position communicating with the second opening of the hinge member engaged with the bearing portion, and a fourth opening formed at a position communicating with the internal space. The electronic device according to claim 1 , wherein the third opening and the fourth opening are communicated with each other. Claim that the inserting member to the inside space is inserted sequentially with the fourth opening and the third opening and the second opening and the first opening of the second housing from the internal space of the first housing 3. The electronic device according to 3 . The electronic device according to claim 4 , wherein the insertion member includes at least one of a flexible substrate and a communication cable. The hinge member is formed of a material having lower frictional resistance with the material of the second housing than that of the materials of the second housing and higher wear resistance than the material of the second housing. The electronic device as described in any one of Claims 1 thru | or 5 . The second housing is made of polycarbonate,
The electronic device according to claim 6, wherein the hinge member is made of polyacetal.

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