JP3714092B2 - Plastic housing with folding hinge - Google Patents

Description

【００６４】
【発明の効果】
本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングは、全体がプラスチックで成形され、そのハウジングを開閉させる回転ヒンジ部もプラスチックにてハウジング本体と一体成形により製造でき、従来のように回転ヒンジ部の軸受に耐久性と強度をもたせるために、プラスチック製のハウジング本体に金属材料にて成形された回転ヒンジ部の軸受を接合して製造したり、あるいは回転ヒンジ部の軸受とハウジング本体のフロントケースとを金属材料にて一体成形したりすることなく、耐久性に優れた十分な強度のある軽量化したハウジングを製造することができる効果がある。
【００６５】
また、回転ヒンジ部を構成する軸受部と支軸部とにおいて、その支軸部を構成する金属製の溝状リブを備えた第２回転体と、その溝状リブに嵌合して軸支固定するプラスチック製の突起状リブを備えた第２軸受の軸孔内周との間に、金属製の保護キャップが装填されているため、その溝状リブと突起状リブとは互いに金属同士の嵌合となって、ハウジングの繰り返し開閉動作に対する耐久性と強度を向上できる効果がある。
【００６６】
また、本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングは、実機としての携帯用情報端末機器などのハウジングに用いるだけではなく、外観形状や携帯操作性などを顧客に確認してもらうために店頭などに展示するための展示見本用機器としてのハウジングとしても使用できるものである。
【図面の簡単な説明】
【図１】本発明の折り畳みヒンジ部を備えたプラスチック製の携帯電話ハウジングの一例を説明する全体外観斜視図。
【図２】本発明の折り畳みヒンジ部を備えたプラスチック製の携帯電話ハウジングの一例を説明する全体平面図。
【図３】本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングの回転ヒンジ部における軸受部の部分断面図。
【図４】（ａ）は本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングの支軸部の全体側面図、（ｂ）はその支軸部の全体断面図、（ｃ）はその支軸部の外端部に化粧カバー（外形カバー）を取り付けた全体側面図。
【図５】（ａ）は本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングの支軸部の先端部側から見た正面図、（ｂ）はその支軸部の図３Ｍ−Ｍ断面図であり、第１回転体及び押圧板の正面断面図、（ｃ）はその支軸部の図３Ｎ−Ｎ断面図であり、第２回転体の正面断面図。
【図６】（ａ）は本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングの回転ヒンジ部における第１軸受及び第１回転体の断面図、（ｂ）はその回転ヒンジ部における第２軸受及び第２回転体の断面図。
【図７】本発明の折り畳みヒンジ部を備えたプラスチック製ハウジングの回転ヒンジ部における保護キャップを装填された第２軸受及び第２回転体の他の実施例の断面図。
【図８】（ａ）は、保護キャップの側面図、（ｂ）は、その側断面図、（ｃ）は、その平面図。
【符号の説明】
１…第１ハウジング １ａ…フロントケース １ｂ…リアケース
４…第２ハウジング ４ａ…フロントケース ４ｂ…リアケース
５…回転ヒンジ部
１１…第１軸受 １４…第２軸受
２０…支軸部 ２１…支軸 ２２…第１回転体 ２２ａ…溝状リブ
２２ｂ…切欠部 ３…第２回転体 ２３ａ…溝状リブ ２３ｂ…凹陥部
２３ｃ…係合部 ２６…押圧板 ２６ａ…突起部 ２７…弾性体
３０…化粧カバー
４０…保護キャップ ４０ａ…突起状リブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a housing having a folding hinge part such as a foldable mobile phone, PHS, or portable information terminal, and more particularly to a plastic housing having a folding hinge part made entirely of plastic.
[0002]
[Prior art]
In portable information terminals such as mobile phones and PHS phones equipped with radio wave transmission / reception antennas and other portable communication devices, radio waves are shielded when the entire device housing (exterior case) is made of metal, Since the antenna inside the device becomes unusable, a housing made of plastic is conventionally used for the above-described device using the antenna.
[0003]
In particular, a portable device has a foldable structure that can be folded via a hinge for folding in order to make the entire device a compact structure. For example, in a mobile phone or a PHS machine, a speaker is used. (Handset) and a display panel side housing body (liquid crystal display panel) housing body (a housing body by superimposing the front case part and the rear case part), an operation panel comprising an operation keyboard and a microphone (speaker) The side housing body (the housing body formed by superimposing the front case portion and the rear case portion) is connected to each other through a bifold hinge portion at the end of each other so that it can be opened and closed. The two housings are overlapped via the hinge when they are not used. By bending way, it has to be folded in half the size.
[0004]
In a device with such a folding structure, sufficient strength and durability are required for repeated opening / closing operation of the hinge part and handling operation in the open state during use, and the entire housing including the hinge part is made of plastic. In the case of a housing, sufficient strength and durability cannot be obtained. Therefore, in a portable terminal equipped with a folding hinge portion, a hinge portion and a front case portion of the housing integral with the hinge portion are generally made of a metal material ( In many cases, a magnesium alloy having a good moldability is used, and a plastic material is used only for the rear case portion of the housing.
[0005]
In particular, when the cover is manually folded and closed (closed angle 0 °; when the display panel side and the operation panel side are overlapped with each other when not in use), an opening operation (for example, an open angle 160) is performed. It is desirable that the operation end positions of the closing operation (overlapping operation) and the opening operation can be transmitted to the operator's fingers as a feeling when touched.
[0006]
For this purpose, a stopper rib for temporary stop that provides a click feeling that can set the operation end point position for maintaining the inner angle of the hinge portion at the time of closing and opening at a constant angle as described above, and confirming the sled position. A structure such as a lock mechanism with a built-in elastic body is important, and the strength of the structure is an important factor for the durability of the entire hinge part.
[0007]
[Problems to be solved by the invention]
Therefore, in order to improve the durability and accuracy of the stopper rib structure and the lock mechanism, a hinge portion formed entirely of a metal material is joined to the end portions of the plastic housing on the display panel side and the operation panel side. An attempt has been made to use a metal material for a bearing portion (bracket) provided with an opening / closing rotation support shaft portion that is a structure of the metal hinge portion and a shaft hole that supports the support shaft.
[0008]
However, the necessary and sufficient strength cannot be obtained at the joint between the plastic housing and the metal hinge part structure provided at the end, and the degree of freedom in designing the entire housing including the hinge part. There were problems such as being lost and being restricted.
[0009]
The present invention provides a housing having a folding hinge portion, including the housing on both the display panel side and the operation panel side, and a bearing portion (bracket) of the hinge portion provided at the end portion of the housing (integrated with the hinge portion). The front case portion and the rear case portion) are made of plastic housing, and the strength of the hinge portion is durable enough to withstand repeated opening and closing operations of about 30,000 times.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, the first housing and the second housing are connected via the rotary hinge portion 5 so as to be foldable and openable, and are respectively attached to one end portions of the first and second housings made of plastic. A first bearing 11 and a second bearing 14 formed of plastic that are integrally fitted adjacent to each other, and projecting ribs provided along the axial direction in the shaft holes of the first and second bearings. A first rotating body 22 made of plastic and a second rotating body 23 made of metal, each having a groove-like rib on the outer periphery thereof rotatably supported by a metal supporting shaft 21; A folding hinge portion into which a support shaft portion including a click mechanism for temporarily stopping and locking the second rotating body at a position having a predetermined rotation angle difference θ relative to each other about the support shaft is provided; Of the second bearing fitted with the second rotating body 23 made of A plastic housing with a folding hinge, characterized in that the shaft hole inner peripheral surface and a tubular body which is formed of a metal in a shape that follows the protruding rib in the bore is loaded.
[0011]
Next, according to a second aspect of the present invention, there is provided a foldable plastic housing in which the first housing and the second housing are foldably connected to each other via a rotary hinge provided at the end thereof. A first bearing and a second bearing formed of plastic that are integrally fitted to one end of each of the molded first housing and the second housing and adjacent to each other, and in shaft holes of the first and second bearings A first rotating body made of plastic and a metal-made first rotating body provided with groove-shaped ribs on the outer periphery thereof rotatably supported by a metal supporting shaft. And a click shaft that temporarily stops and locks the first rotation body and the second rotation body at a position having a predetermined rotation angle difference relative to each other about the support shaft. Part, and Folding hinges in which the first rotating body and the second rotating body are fitted and fitted with projection-like ribs and groove-like ribs are inserted into the shaft holes of the first bearing and the second bearing, respectively, A cylindrical body formed of metal in a shape following the inner peripheral surface of the shaft hole and the protruding rib shape is loaded in the shaft hole of the second bearing into which the second rotating body 23 is inserted. A plastic housing provided with a folding hinge.
[0012]
Next, the invention according to claim 3 of the present invention is a foldable plastic housing in which the first housing and the second housing are connected so as to be foldable via a rotary hinge provided at the end thereof. A first bearing and a second bearing formed of plastic that are integrally fitted to one end of each of the molded first housing and the second housing and adjacent to each other, and in shaft holes of the first and second bearings A first rotating body made of plastic and a metal-made first rotating body provided with groove-shaped ribs on the outer periphery thereof rotatably supported by a metal supporting shaft. The second rotating body, and the first rotating body is provided in the first rotating body so as to be rotatable integrally with the rotating body, and is urged by the elastic body along the supporting shaft. 2 Press plate for pressing the rotating body and the press Rotation phase with respect to a straight line connecting the center and both ends of the projections provided on both ends with the support shaft interposed therebetween, both ends facing the support shaft of the pressing surface of the second rotating body Inserting the protrusion and the recess at a position having a predetermined rotational angle difference, and a recess that elastically fits the protrusion of the pressing plate provided at both ends on a straight line with different angles by a predetermined angle And a supporting shaft portion provided with a click mechanism for temporarily stopping and locking the relative rotation of the first rotating body and the second rotating body, and in each shaft hole of the first bearing and the second bearing, The first rotating body and the second rotating body are fitted and fitted with projection-like ribs and groove-shaped ribs, and the engaging portion provided at the tip of the second rotating body is engaged with the inner end portion of the second bearing. And a folding hinge part fixed thereto, and the second rotating body 23 made of metal is inserted into the shaft hole of the second bearing. A plastic housing with a folding hinge, characterized in that shape formed with a metal a cylindrical body to follow the hole inner peripheral surface and the protruding rib is loaded.
[0013]
Next, the invention according to claim 4 of the present invention is the plastic housing provided with a folding hinge portion in which the rotational phase angle differs by an angle of 10 ° to 25 ° in the housing of the invention according to claim 3. .
[0014]
Next, according to a fifth aspect of the present invention, in the housing according to the first to fourth aspects, the predetermined rotation angle difference is any one of 155 ° to 170 °. It is a plastic housing provided with a hinge part.
[0015]
Next, according to a sixth aspect of the present invention, there is provided a foldable plastic housing in which the first housing and the second housing are foldably connected to each other via a rotary hinge provided at the end thereof. A first bearing and a second bearing formed of plastic that are integrally fitted to one end of each of the molded first housing and the second housing and adjacent to each other, and in shaft holes of the first and second bearings A first rotating body made of plastic and a metal-made first rotating body provided with groove-shaped ribs on the outer periphery thereof rotatably supported by a metal supporting shaft. The second rotating body, and the first rotating body is provided in the first rotating body so as to be rotatable integrally with the rotating body, and is urged by the elastic body along the supporting shaft. 2 Press plate for pressing the rotating body and the press A recess in which a protrusion provided on both ends across the support shaft and a protrusion on the pressing plate provided on both ends facing each other across the support shaft of the pressing surface of the second rotating body are elastically inserted. And a click shaft for temporarily stopping and locking the relative rotation of the first rotating body and the second rotating body by inserting the protrusion and the recessed portion at a position having a predetermined rotation angle difference. The first rotating body and the second rotating body are fitted in the shaft holes of the first bearing and the second bearing with the protruding ribs and the groove-shaped ribs fitted, and the second A folding hinge portion is provided that engages and fixes an engagement portion provided at a distal end portion of the rotating body to an inner end portion of the second bearing, and the second bearing body is inserted into the second bearing. A cylindrical body made of metal in a shape that follows the inner peripheral surface of the shaft hole and the shape of the protruding rib is loaded in the shaft hole. A plastic housing with a folding hinge and.
[0016]
Next, the invention according to claim 7 of the present invention is the plastic housing provided with the folding hinge portion in which the predetermined rotation angle difference is 180 ° in the housing of the invention according to claim 6.
[0017]
Next, according to an eighth aspect of the present invention, in the housing according to the first to seventh aspects of the present invention, the second rotating body made of metal is formed of plastic having an engaging portion at a tip end portion. It is a plastic housing provided with a folding hinge part constituted by a front rotating part formed and a rear rotating part formed of metal provided with a recessed part into which a protrusion of the pressing plate is elastically inserted.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
The plastic housing provided with the folding hinge part of the present invention will be described in detail below according to the embodiment shown in FIGS.
[0019]
FIG. 1 is an external perspective view of a portable information terminal such as a foldable mobile phone or a PHS device for explaining an example of a plastic housing having a folding hinge portion of the present invention, and FIG. 2 is a plan view thereof.
[0020]
The housing of the present invention includes a first housing 1 on the operation panel side including an operation keyboard 2 and a transmitter 3 (microphone), a display including a liquid crystal display panel 5, a receiver 6 (speaker), an antenna unit 7, and the like. The first housing 1 is formed by overlapping the front case 1a and the rear case 1b, and the second housing 4 is overlapping the front case 4a and the rear case 4b. The first and second housings 1 and 4 are mounted in the shaft holes of the first bearing 11 and the second bearing 14, respectively, which are integrally formed at the ends of the front cases 1a and 4a. It is connected in a foldable and foldable manner through a rotary hinge portion 5 that rotates about the axis O of the support shaft portion that passes through.
[0021]
As shown in the figure, the first bearing 11 and the second bearing 14 are integrally molded with plastic at one end thereof together with the first housing 1 and the second housing 4 and are combined so as to be fitted adjacent to each other. It has been.
[0022]
The first housing 1 on the operation panel side and the second housing 4 on the display panel side are bent so that the inner angle of the operation is within the range of the closed internal angle 0 ° to the open internal angle 170 ° (for example, the closed internal angle 0 °, the open internal angle 160 °). Yes, it can be opened in the direction from the inner angle of 0 ° to the open inner angle of 160 ° when in use, and folded in two and closed in the direction of 160 ° to 0 ° when not in use, so that both housings can be folded together. .
[0023]
The first and second housings 1 and 4 are made of acrylonitrile / butadiene / styrene (ABS) resin. Of course, polycarbonate or a copolymer of acrylonitrile / butadiene / styrene (ABS) and polycarbonate may be used. However, a synthetic resin (non-crystalline resin) having a high drop strength, easy molding, and a small molding shrinkage ratio is preferable.
[0024]
A keyboard portion 2 is provided on the surface of the first housing 1 on the operation panel side, and a battery cover 8 made of an alloy of polycarbonate and acrylonitrile / butadiene / styrene is provided on the rear surface side of the housing 1. And an earphone jack cap 9 made of nitrile-butadiene rubber (NBR) is attached to the outer end of the housing 1.
[0025]
Further, a liquid crystal display panel 5 is provided on the surface of the second housing 4 on the display panel side, and a transparent lens-like liquid crystal display panel cover portion made of polycarbonate is attached, and the present invention is made of plastic for use as a sample. In the case of the housing, a screen simulation display screen portion for printing and displaying characters and symbols displayed on the screen on a liquid crystal display panel made of polymethyl methacrylate is attached.
[0026]
FIG. 3 is a partial cross-sectional view for explaining the inside of the rotary hinge 5, and FIGS. 6A and 6B are cross-sectional views of the first bearing 11 and the second bearing 14 in the rotary hinge 5. The first bearing 11 provided at one end of the first housing 1 includes a shaft hole 11a, and the second bearing 14 provided at one end of the second housing 4 on the display panel side includes a shaft hole 14a. As shown in FIG. 1, the support shaft portion 20 is fitted into the shaft holes 11a and 14a from the left to the right in the drawing.
[0027]
Further, as shown in FIG. 6A, the shaft hole 11a of the first bearing 11 is provided with a protruding rib 11b along the axial direction, and the shaft hole 14a of the second bearing 14 As shown in FIG. 6B, a protruding rib 14b is provided along the axial direction.
[0028]
As shown in FIG. 3, the support shaft portion 20 includes a plastic first rotating body 22 and a metal second rotating body 23 that are rotatably supported on the support shaft 21. The first and second rotating bodies 22 and 23 can be rotated about the support shaft 21 independently of each other.
[0029]
As shown in FIG. 6 (a), groove-like ribs 22 a and 22 a are provided on the outer peripheral surfaces of the first rotating body 22 constituting the support shaft portion 20 that are opposed to each other with the support shaft 21 therebetween, thereby forming the support shaft portion 20. As shown in FIG. 6B, groove-like ribs 23a and 23a are provided on the outer peripheral surfaces facing each other with the support shaft 21 of the metal second rotating body 23 interposed therebetween.
[0030]
The support shaft portion 20 according to the present invention will be described in detail with reference to a side view of the support shaft portion 20 shown in FIGS. 3 and 4A and a side sectional view of the support shaft portion 20 shown in FIG. The support shaft portion 20 is composed of a plastic first rotating body 22 and a metal second rotating body 23 rotatably supported on the support shaft 21, and the first and second rotating bodies 22, Each of the support shafts 21 is separately and independently rotatable about the support shaft 21. The support shafts 21 are provided with locking plates 21 a and 21 b at both ends so that the first and second rotating bodies 22 and 23 do not fall off. It is like that.
[0031]
The first rotating body 22 is provided with groove-like ribs 22a and 22a on the outer peripheral surfaces facing each other with the support shaft 21 interposed therebetween, and the inside of the rotating body 22 is hollow, and the support shaft is provided in the hollow interior. A spiral spring 27 is attached as an elastic body inserted into the shaft 21, and is inserted into the support shaft 21 inside the distal end side (the side close to the second rotor 23) of the first rotating body 22. The pressing plate 26 is provided by being urged toward the tip of the first rotating body 22 by the elastic force of the helical spring 27, and the pressing plate 26 has both ends opposed to each other across the support shaft 21. The rotary body 22 is fitted in and inserted into notches 22b and 22b provided on the peripheral surface on the distal end side, and can rotate integrally with the rotation of the first rotary body 22. Further, at both end portions of the pressing plate 26, projections 26 a and 26 a that are opposed to the adjacent surfaces of the adjacent second rotating bodies 23 are provided.
[0032]
The metal second rotating body 23 is provided with groove-like ribs 23 a and 23 a on the outer peripheral surface facing the support shaft 21, and the adjacent surface adjacent to the first rotating body 22 is provided with an elastic body 27. Recessed portions 23b and 23b are provided at corresponding positions where the protruding portions 26a and 26a of the urged second pressing plate 26 can be fitted, respectively.
[0033]
On the opposite side of the second rotating body 23 (made of metal) from the adjacent surface adjacent to the first rotating body 22 (made of plastic), there is provided an elastic split pin-shaped engaging portion 23c. As shown in FIG. 3, when the entire support shaft portion 20 is inserted into the shaft holes 11a and 14a of the first and second bearings 11 and 14 in the right direction from the left side of the drawing, the split pin-shaped engagement is performed. After the distal end portion of the portion 23c is inserted into the thin shaft hole of the shaft hole 14a of the second bearing 14, the claw portion at the distal end portion of the engagement portion 23c is engaged with the outer end surface of the shaft hole 14a. Thus, the entire support shaft portion 20 is prevented from coming off to the outside (left direction in the drawing).
[0034]
As shown in FIGS. 3 and 4 (c), after the rotary hinge portion 5 is formed by inserting the support shaft portion 20 into the shaft holes 11a and 14a, the outer end portion of the support shaft portion 20 is formed. A decorative cover 30 is covered on a certain locking portion 21a while being slid along the notches on both sides of the locking portion 21a.
[0035]
FIG. 5A is a front view of the support shaft portion 20 shown in FIGS. 4A and 4C as viewed from the second rotating body 23 side. The engaging portion 23c of the second rotating body 23 is shown in FIG. It is divided into four and has a split pin shape.
[0036]
FIG. 5B is a cross-sectional view taken along the line MM of the support shaft portion 20 of FIG. 3. The first rotating body 22 has a hollow inside and has groove-like ribs on the outer peripheral surface facing the support shaft 21. 22a and 22a are provided, and the pressing plate 26 is slidably fitted along the support shaft 21, and both end portions of the pressing plate 26 are opposed to each other with the support shaft 21 of the first rotating body 22 therebetween. It is inserted in notches 22b and 22b provided in the part.
[0037]
FIG. 5C is an NN cross-sectional view related to the support shaft portion 20 of FIG. 3, and the second rotating body 23 is provided with groove-like ribs 23 a and 23 a on the outer peripheral surfaces facing each other with the support shaft 21 interposed therebetween. ,ing.
[0038]
6A is a cross-sectional view taken along the line MM of the first bearing 11 and the first rotating body 22 of the rotary hinge portion 5 of FIG. 3, and FIG. 6B is a first view of the rotary hinge portion 5 of FIG. FIG. 6 is a cross-sectional view taken along line NN regarding the two bearings 14 and the second rotating body 23.
[0039]
As shown in FIG. 6A, the first rotating body 22 of the support shaft portion 20 is inserted into the shaft hole 11a of the first bearing 11 provided at the end of the first housing 1 on the operation panel side. The projecting rib 11b of the shaft hole 11a and the groove-shaped rib 22a of the rotating body 22 are fitted to each other, and the first bearing 11 of the first housing 1 is connected to the support shaft 21 of the support shaft portion 20. It rotates integrally with the first rotating body 22 at the center.
[0040]
Further, as shown in FIG. 6B, the second rotating body 23 of the support shaft portion 20 is placed in the shaft hole 14a of the second bearing 14 provided at the end of the second housing 4 on the display panel side. The projecting rib 14b of the shaft hole 14a and the groove-like rib 23a of the rotating body 23 are fitted to each other, and the second bearing 14 of the second housing 4 is the support shaft of the support shaft portion 20. Rotate integrally with the second rotating body 23 around 21.
[0041]
The first housing 1 and the second housing 4 are connected to each other via the support shaft portion 20 inserted into the first bearing 11 and the second bearing 14, respectively. Thus, a foldable plastic housing having a rotating hinge portion 5 as shown in FIGS. 1 and 2 is formed. As shown in FIG. 6 (a), the first housing 1 and the second housing 4 are not fully opened when the first housing 1 and the second housing 4 are fully opened at a predetermined inner angle θ. A stop contact portion 11c is provided at a portion corresponding to the outer periphery of the bearing 11 just below the support shaft 21, and as shown in FIG. 6B, a stop portion is provided at a portion corresponding to the support shaft 21 immediately below the outer periphery of the second bearing 14. When the first housing 1 and the second housing 4 are fully opened at a predetermined inner angle θ, the contact back portion 14c contacts the contact portion 11c. It does not open beyond the set internal angle θ when fully open.
[0042]
As shown in FIG. 6A, the protrusions 26a and 26a at both ends of the pressing plate 26 that can rotate integrally with the first rotating body 22 in the rotating hinge 5 are always elastic bodies 27 (FIG. 3). 4)), when the first housing 1 and the second housing 4 are opened and closed via the rotary hinge 5, the housings are respectively moved. The first rotator 22 and the second rotator 23 are integrally rotated around the support shaft 21 integrally with 1 and 4.
[0043]
Then, at a predetermined relative rotation angle in the opening / closing operation of the first housing 1 and the second housing 4, the protrusions 26 a and 26 a that are integral with the plastic first rotating body 22 are provided in the second rotation made of metal. The body 23 is fitted into recesses 23b and 23b provided at positions corresponding to the protrusions 26a and 26a on the surface adjacent to the first rotating body 22, and is temporarily stopped and locked together. .
[0044]
As shown in FIG. 6A, the pressing plate 26 of the first rotating body 22 that rotates integrally with the first housing 1 (the first bearing 11) is, for example, as shown in FIG. Attaching points between the convex ribs 11b and the groove-like ribs 22a are provided in the direction that is attached in the direction of the straight line A1 -B1 and substantially orthogonal to the straight line A1 -B1.
[0045]
The protrusions 26a and 26a of the pressing plate 26 are provided on straight lines A1 to B1 at both ends of the pressing plate 26, respectively, and depend on a predetermined rotation angle θ between the first housing 1 and the second housing 4. In the opening / closing operation, the first housing 1 (the first bearing 11) rotates relative to the second housing 4 (the second bearing 14) about the support shaft 21 by the predetermined rotation angle θ, and the straight line A1. The projections 26a and 26a on -B1 rotate and move on a straight line A2 -B2.
[0046]
As shown in FIG. 6B, the recessed portions 23b and 23b provided on the adjacent surface of the second rotating body 23 that rotates integrally with the second housing 4 (second bearing 14) with respect to the first rotating body 22 are The protrusions 26a and 26a are provided at positions corresponding to the rotation of the predetermined rotation angle θ. For example, as shown in the figure, the protrusions 26a and 26a are respectively provided on the straight line A1 -B1 and on the straight line A2 -B2. In the direction substantially orthogonal to the straight line A1 -B1, fitting points between the convex ribs 14b and the groove-like ribs 23a are respectively provided.
[0047]
In the opening / closing operation of the first housing 1 and the second housing 4 at a predetermined angle θ, the second housing 4 (first bearing 14) is supported by the support shaft 21 with respect to the first housing 1 (first bearing 11). The concave portions 23b and 23b on the straight line A1 -B1 are on the straight line A2 -B2, and the concave portions 23b and 23b on the straight line A2 -B2 are the straight line A1. -Move to B1.
[0048]
As shown in FIG. 6 (b), the predetermined rotation angle θ is set by a metal first fitting into which the projections 26a, 26a (metal) of the metal pressing plate 26 on the first rotating body 22 side are fitted. The rotational phase angle difference between the straight line A1 -B1 and the straight line A2 -B2 provided with the recesses 23a, 23a of the two-rotor 23 is set to 180 ° -θ, and is opened on one straight line A1 -B1 (fully open) A pair of concave portions 23a, 23a facing each other with the support shaft 21 interposed therebetween is provided as a click point (lock position at which full opening is stopped), and the click point at the time of closing (fully closed) on the other straight line A2 -B2 ( A pair of recesses 23a, 23a facing each other with the support shaft 21 interposed therebetween is provided as a lock position for closing and stopping), and thus the two pairs of recesses 23a, 23a are connected to the first rotating body 22 of the second rotating body 23. It can implement by providing in the adjacent surface.
[0049]
Here, when the inner angle at the time of closing when both the housings 1 and 4 are overlapped and folded is set to 0 °, the inner angle at the time of opening is set to any angle from 155 ° to 170 °, for example. The predetermined rotation angle θ (predetermined relative rotation angle) necessary for the opening / folding operation (opening / closing operation) between the first housing 1 and the second housing 4 via the rotary hinge portion 5 is 155 °. The angle is set to any one of ˜170 °.
[0050]
Therefore, when the predetermined rotation angle θ is set to any one of 155 ° to 170 °, for example, the straight lines A1 -B1 and the straight line A2 where the recessed portions 23a and 23a of the second rotating body 23 are provided. -B2 rotation phase angle difference
180 ° −θ = 180 ° − (155 ° to 170 °) = 25 ° to 10 °
The concave portions 23a and 23a are provided on the straight line A1 -B1 and the straight line A2 -B2, respectively.
[0051]
As another embodiment of the present invention, there is a plastic housing provided with the folding hinge portion of the invention according to claim 6, which will be described with reference to FIGS. 3 and 6 (a) to 6 (b). As shown in FIG. 1, the first and second bearings 11 and 14 formed of plastic that are integrally fitted to one end of each of the first housing 1 and the second housing 4 that are molded of plastic are fitted adjacent to each other. .
[0052]
Protruding ribs 11b and 14b provided along the axial direction are provided in the shaft holes 11a and 14a of the first and second bearings 11 and 14, and are rotatably supported by a metal support shaft 21. The plastic 1st rotary body 22 and the metal 2nd rotary body 23 which provided the groove-shaped rib in the outer periphery are provided.
[0053]
The supporting shaft 21 is inserted into the first rotating body 22, is rotatably provided integrally with the rotating body 22, and is urged by the elastic body 27 along the supporting shaft 21. A pressing plate 26 that presses the second rotating body 23, and the pressing plate 26 is provided with projections 26 a and 26 a at both ends across the support shaft 21, and as shown in FIG. The rotation angle difference between 26a and 26a is set to 180 ° (on the straight line A1 -B1).
[0054]
As shown in FIG. 3, two opposite protrusions 26 a and 26 a provided at both ends of the pressing plate 26 are provided at both ends of the pressing surface of the second rotating body 23 facing each other with the support shaft 21 therebetween. At a corresponding position, a pair of two recessed portions 23b, 23b into which both the protruding portions 26a, 26a are elastically fitted are provided. As shown in FIG. 6B, the rotation angle of the recessed portions 23b, 23b is provided. The difference is set to 180 ° (on the straight line A1 -B1).
[0055]
Thereby, at the position having a rotation angle difference of 180 °, the protrusions 26a, 26a and the recesses 23a, 23a are fitted to each other, and the first rotation body 22 and the second rotation body 23 are relatively rotated. A click mechanism for temporarily stopping and locking is obtained.
[0056]
And the shaft part 11a, 14a of the said 1st bearing 11 and the 2nd bearing 14 is made into the projecting rib 11b, the groove-shaped rib 22a, and the spindle part which consists of the 1st rotary body 22 and the 2nd rotary body 23, The protrusion-like rib 14b and the groove-like rib 23a are fitted and inserted, and the engaging portion 23c provided at the tip of the second rotating body 23 is engaged with the inner end of the second bearing 23. It is fixed.
[0057]
The first and second housings 1 and 2 in the present invention and the first and second bearings 11 and 14 in the rotary hinge portion 5 integrated therewith are also molded of plastic, and the first and second bearings 11 and 14 are also formed. The support shaft portion 20 inserted into the shaft holes 11a and 14a, the support shaft 21, and the projection portion 26a of the pressing plate 26 (or the pressing plate 26 and the projection portion 26a), the second rotating body 23, its recessed portion 23b, and the second Except for the split pin-shaped engaging portion 23c at the tip of the rotating body 23, the entire structure including the first rotating body 22 is made of plastic.
[0058]
Further, as another embodiment of the present invention, for example, as shown in FIGS. 3 and 4A to 4C, the second rotating body 23 made of metal includes two rotating bodies 24 and 25. The rotating body 25 on the side close to the first rotating body 22 may be formed of metal, and the grooved ribs 23a and the recessed portions 23b are formed on the rotating body 25 made of metal. The rotating body 24 on the tip side of the second rotating body 23 (the split pin 23c side) may be made of plastic.
[0059]
In the housing of the present invention, as shown in FIGS. 3 and 7, the inner peripheral surface of the shaft hole 14 a and the inner peripheral surface thereof are inserted into the shaft hole 14 a of the plastic second bearing 14 in the second housing 4. A cylindrical protective cap 40 formed of metal in a shape that follows the shape of the protruding rib 14b provided on the inner surface of the shaft hole 14a is covered with metal, and the protective cap 40 By inserting and inserting the second rotating body 23 (the metallic rotating body 23 or the plastic rotating body 24 and the metallic rotating body 25 constituting the rotating body 23), the inside of the rotating hinge portion 5 by repeating the opening and closing operation. This reduces the occurrence of plastic wear and breakage due to the contact between the plastic and the metal as much as possible.
[0060]
8A is a side view of the protective cap 40, FIG. 8B is a sectional side view thereof, and FIG. 8C is a front view thereof. The inner peripheral surface of the shaft hole 14a of the second bearing 14 is covered. A cylindrical side wall portion 41, a bottom wall portion 42 provided at one end of the cylindrical side wall portion 41, and a first side wall portion 41 projecting inward from the opposing side wall portion of the cylindrical side wall portion 41. (2) A protruding rib 40a that fits into the protruding rib 14b of the bearing 14 and the grooved rib 23a of the second rotating body 23, and a tip end portion of the second rotating body 23 provided in the center of the bottom wall portion 42 are provided. It is comprised by the hole-forming part 43 which can be inserted. Note that the bottom wall portion 42 of the protective cap 40 can be omitted. In addition, the protective cap 40 can be formed by deep drawing a thin metal plate, for example, by deep drawing the metal plate once and then punching the bottom.
[0061]
The protective cap 40 is also required to be durable, and as a material, carbon steel plate for machine structure (S10C to S22C) having a carbon content of 0.25% or less and brass can be used. Further, since the protective cap 40 can be made of a thin metal material of about 0.2 to 0.8 mm, the thickness and length of the rotary hinge portion 5 are not increased, and the increase in weight due to the use of the metal material is slight. All that is required is a clean and compact design.
[0062]
Table 1 below shows the actual open / close test results of the rotating hinge portion 5 (folding hinge portion) of the plastic housing provided with the folding hinge portion of the present invention.
[0063]
[Table 1]

[0064]
【The invention's effect】
The plastic housing provided with the folding hinge portion of the present invention is molded entirely of plastic, and the rotating hinge portion for opening and closing the housing can also be manufactured by molding integrally with the housing body with plastic. In order to give durability and strength to the bearing, it is manufactured by joining a bearing of a rotating hinge part formed of a metal material to a plastic housing body, or a bearing of the rotating hinge part and a front case of the housing body There is an effect that it is possible to manufacture a lightweight housing with sufficient strength and excellent durability without being integrally molded with a metal material.
[0065]
In addition, in the bearing portion and the support shaft portion constituting the rotary hinge portion, the second rotary body provided with the metal groove-like rib constituting the support shaft portion and the shaft support by fitting into the groove-like rib. Since a protective cap made of metal is loaded between the inner periphery of the shaft hole of the second bearing having the plastic protruding rib to be fixed, the grooved rib and the protruding rib are made of metal with each other. There is an effect that the durability and strength against repeated opening and closing operations of the housing can be improved by fitting.
[0066]
In addition, the plastic housing having the folding hinge portion of the present invention is used not only for a housing of a portable information terminal device as an actual machine, but also in order to have the customer confirm the external shape and portable operability. It can also be used as a housing as an exhibition sample device for exhibiting in the market.
[Brief description of the drawings]
FIG. 1 is an overall external perspective view illustrating an example of a plastic mobile phone housing provided with a folding hinge portion of the present invention.
FIG. 2 is an overall plan view illustrating an example of a plastic cellular phone housing provided with a folding hinge portion according to the present invention.
FIG. 3 is a partial cross-sectional view of a bearing portion in a rotary hinge portion of a plastic housing provided with a folding hinge portion according to the present invention.
4A is an overall side view of a support shaft portion of a plastic housing having a folding hinge portion of the present invention, FIG. 4B is an overall cross-sectional view of the support shaft portion, and FIG. The whole side view which attached the makeup | decoration cover (outer shape cover) to the outer end part.
FIG. 5A is a front view of the plastic housing provided with the folding hinge portion of the present invention as viewed from the front end side of the support shaft portion, and FIG. 5B is a cross-sectional view of the support shaft portion shown in FIGS. Fig. 3C is a front cross-sectional view of the first rotating body and the pressing plate, and Fig. 3C is a cross-sectional view of Fig. 3NN of the support shaft portion.
6A is a cross-sectional view of a first bearing and a first rotating body in a rotating hinge portion of a plastic housing having a folding hinge portion of the present invention, and FIG. 6B is a second bearing in the rotating hinge portion; Sectional drawing of a 2nd rotary body.
FIG. 7 is a cross-sectional view of another embodiment of the second bearing and the second rotating body loaded with a protective cap in the rotating hinge portion of the plastic housing having the folding hinge portion of the present invention.
8A is a side view of a protective cap, FIG. 8B is a side sectional view thereof, and FIG. 8C is a plan view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... 1st housing 1a ... Front case 1b ... Rear case
4 ... 2nd housing 4a ... Front case 4b ... Rear case
5 ... Rotating hinge
11 ... 1st bearing 14 ... 2nd bearing
DESCRIPTION OF SYMBOLS 20 ... Support shaft part 21 ... Support shaft 22 ... 1st rotary body 22a ... Groove-shaped rib
22b ... Notch 3 ... 2nd rotator 23a ... Groove-like rib 23b ... Recessed part
23c ... engaging portion 26 ... pressing plate 26a ... projection 27 ... elastic body
30 ... Cosmetic cover
40 ... Protective cap 40a ... Protruding rib

Claims (8)

The first housing and the second housing are connected via the rotary hinge portion 5 so as to be foldable and openable, and the plastic housings are fitted to the respective one end portions of the first and second housings, which are made of plastic, and are adjacent to each other. A metal support shaft 21 is provided on a bearing portion including the molded first bearing 11 and the second bearing 14 and projecting ribs provided in the shaft holes of the first and second bearings along the axial direction. The first rotating body 22 made of plastic and the second rotating body 23 made of metal having a groove-like rib provided on the outer periphery thereof rotatably supported by the shaft, and the first and second rotating bodies around the supporting shaft. A folding hinge portion into which a support shaft portion provided with a click mechanism that temporarily stops and locks at a position having a relatively predetermined rotation angle difference θ is provided, and the metal second rotating body 23 is inserted thereinto. In the shaft hole of the second bearing, the plastic Plastic housing bore peripheral surface and is a cylindrical member formed of a metal having a shape to protect the protruding ribs with a folding hinge, characterized in that it is loaded. A foldable plastic housing in which a first housing and a second housing are connected to each other via a rotary hinge provided at an end thereof so as to be foldable and openable. One end of each of the first housing and the second housing formed of plastic A first bearing and a second bearing molded integrally with each other and adjacent to each other, and projecting ribs provided along the axial direction in the shaft holes of the first and second bearings. A bearing portion provided, a plastic first rotating body and a metal second rotating body provided with grooved ribs on the outer periphery thereof rotatably supported by a metal supporting shaft, and the first rotating body A first shaft and a second shaft, each of which includes a click mechanism that temporarily stops and locks the second rotating body at a position having a predetermined rotational angle difference relative to each other about the shaft. Within each shaft bore of the bearing The second rotating body is provided with a folding hinge portion in which the first rotating body and the second rotating body are fitted and fitted with protruding ribs and groove-shaped ribs, and the second rotating body 23 made of metal is inserted. A plastic having a folding hinge portion, characterized in that a cylindrical body formed of a metal shaped to protect the inner peripheral surface of the plastic shaft hole and the protruding rib is loaded in the shaft hole of the bearing. Made of housing. A foldable plastic housing in which a first housing and a second housing are connected to each other via a rotary hinge provided at an end thereof so as to be foldable and openable. One end of each of the first housing and the second housing formed of plastic A first bearing and a second bearing molded integrally with each other and adjacent to each other, and projecting ribs provided along the axial direction in the shaft holes of the first and second bearings. A bearing portion provided, a plastic first rotating body and a metal second rotating body provided with groove-like ribs on the outer periphery thereof rotatably supported by a metal supporting shaft, and the first rotating body A pressing plate that is passed through the support shaft and is rotatably provided integrally with the rotating body, and is urged by an elastic body along the supporting shaft to press the second rotating body; and the pressing plate On both ends of the support shaft A starting portion, opposite end portions across the support shaft of the pressing surface of the second rotating body, and both end portions on a straight line whose rotational phase angle differs by a predetermined angle with respect to a straight line connecting the support shaft center and both end portions The protrusion of the pressing plate provided on the elastic member is inserted into the recess, and the protrusion and the recess are inserted at a position having a predetermined rotational angle difference between the first rotating body and the second rotating body. And a support shaft portion provided with a click mechanism that temporarily locks and stops relative rotation, and the first rotating body and the second rotating body are projected in the shaft holes of the first bearing and the second bearing, respectively. A folding hinge portion that is fitted and fitted with a rib and a groove-like rib, and an engagement portion provided at a distal end portion of the second rotating body is engaged with and fixed to an inner end portion of a second bearing; In the shaft hole of the second bearing into which the second rotating body 23 made of plastic is inserted, the inner peripheral surface of the plastic shaft hole and the projection Plastic housings metals molded a cylindrical body shape that protects the ribs with a folding hinge, characterized in that it is loaded. The plastic housing provided with a folding hinge part according to claim 3, wherein the rotational phase angle differs by an angle of 10 ° to 25 °. The plastic housing provided with the folding hinge part according to claim 1, wherein the predetermined rotation angle difference is any one of 155 ° to 170 °. A foldable plastic housing in which a first housing and a second housing are connected to each other via a rotary hinge provided at an end thereof so as to be foldable and openable. One end of each of the first housing and the second housing formed of plastic A first bearing and a second bearing molded integrally with each other and adjacent to each other, and projecting ribs provided along the axial direction in the shaft holes of the first and second bearings. A bearing portion provided, a plastic first rotating body and a metal second rotating body provided with groove-like ribs on the outer periphery thereof rotatably supported by a metal supporting shaft, and the first rotating body A pressing plate that is passed through the support shaft and is rotatably provided integrally with the rotating body, and is urged by an elastic body along the supporting shaft to press the second rotating body; and the pressing plate On both ends of the support shaft At a position having a predetermined rotational angle difference between the raised portion, the recessed portion in which the protruding portion of the pressing plate provided on both ends facing each other across the support shaft of the pressing surface of the second rotating body is elastically inserted And a supporting shaft portion provided with a click mechanism for temporarily locking the relative rotation of the first rotating body and the second rotating body by fitting the protrusion and the recessed portion, and the first bearing and the first bearing In each shaft hole of the two bearings, the first rotating body and the second rotating body are fitted and inserted with the protruding ribs and the groove-shaped ribs fitted, and the engaging portion provided at the tip of the second rotating body is provided. A folding hinge portion engaged with and fixed to the inner end portion of the second bearing is provided, and the plastic shaft hole is inserted into the shaft hole of the second bearing into which the metal second rotating body 23 is inserted. Folding hin is characterized in that it is loaded with a cylindrical body formed of a metal that protects the peripheral surface and the protruding ribs Plastic housing with parts. The plastic housing provided with a folding hinge part according to claim 6, wherein the predetermined rotation angle difference is 180 °. The metal second rotating body is formed of a metal provided with a front rotating part formed of plastic having an engaging part at a tip part and a recessed part into which a protrusion of the pressing plate is elastically fitted. A plastic housing provided with a folding hinge portion according to claim 1, wherein the plastic housing includes a rear rotating portion.

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