US20010002021A1 - Electronic apparatus and method of manufacturing thereof - Google Patents
Electronic apparatus and method of manufacturing thereof Download PDFInfo
- Publication number
- US20010002021A1 US20010002021A1 US09/737,867 US73786700A US2001002021A1 US 20010002021 A1 US20010002021 A1 US 20010002021A1 US 73786700 A US73786700 A US 73786700A US 2001002021 A1 US2001002021 A1 US 2001002021A1
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- United States
- Prior art keywords
- boss
- housing
- electronic apparatus
- molten metal
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
- H05K7/142—Spacers not being card guides
Definitions
- This invention relates to a housing for electronic apparatuses such as personal computers, in particular, a boss structure of an electronic apparatus housing.
- a housing mainly using a magnesium alloy as material is adopted as an electronic apparatus housing formed of light metal.
- the alloy is molded by a die-cast method and a thixotropy method. Although these molding methods are different in the device structure, they are performed under the condition where the alloy which has been molten at 580-750° C. is injected and molded in a mold having a temperature of 100-350° C.
- FIG. 1 shows a structure of a conventional electronic apparatus housing.
- molten metal is introduced from a sprue 2 which is a part for introducing molten metal into a molding device (in FIG. 1, explanation is made by using parts corresponding to the form of the electronic apparatus housing immediately after molding), and passed through a runner 3 so that the molten metal is introduced into a desired mold.
- the introduced molten metal extends through the whole cavity 4 to reach an air vent 5 .
- a basin 6 is further connected to the air vent 5 . Therefore, when the molten metal is introduced from the sprue 2 , air can be released outside through the air vent 5 , and thereby the housing can be formed in the state where no void exists in the housing.
- a plurality of bosses 7 are provided on the electronic apparatus housing 1 in order to mount various electronic circuits or the like on the housing.
- the bosses 7 are formed as one piece with a bottom portion of the electronic apparatus housing 1 by pouring the molten metal in concave hole portions formed in the mold. Further, the bosses 7 are provided so as to project from the bottom portion of the electronic apparatus housing 1 .
- screw holes 8 are formed at the bosses 7 , which make it possible to engage an electronic circuit and other various parts by screw.
- the hole portions which are formed in the mold in order to form the bosses 7 are formed in the form of a deep groove in a direction perpendicular to a direction of flow of the molten metal along the cavity 4 of the mold, so as to conform to the form of the bosses 7 of the electronic apparatus housing 1 .
- the molten metal easily flows in a direction along the flow of the molten metal of the cavity 4
- the holes are formed perpendicular to the cavity 4 , and therefore the molten metal does not easily flow into the holes as the form of the holes is made deeper.
- the present invention has been made on the basis of the above circumstances.
- the object of the invention is to provide an electronic apparatus having a housing which includes no non-filled portion and can form a boss form in a good state, and a method of manufacturing thereof.
- an electronic apparatus of the present invention comprises a housing, and a boss member formed as a separate piece from the housing and mounted on the housing to form a boss portion.
- a method of manufacturing an electronic apparatus of the present invention is a method of manufacturing an electronic apparatus having a housing with a boss portion of a predetermined height, comprising the steps of: a housing forming step for forming the housing introducing molten metal into a mold device, the housing having a projecting portion at a location where the boss portion is to be formed, and the housing constituting portions other than the boss portion of the housing; and a boss portion forming step for forming the boss portion by fixedly engaging a boss member, which is to constitute the boss portion, with the projecting portion.
- FIG. 1 is a perspective view showing a form of an electronic apparatus housing concerning conventional art
- FIG. 2 is a perspective view showing a structure of a portable computer used as an electronic apparatus concerning an embodiment of the present invention
- FIG. 3 is a diagram showing a flow chart of a method of manufacturing the electronic apparatus
- FIG. 4 is a perspective view showing a form of an electronic apparatus housing used for the electronic apparatus
- FIG. 5 is a side cross-sectional view showing a state of a boss portion and around the boss portion of the electronic apparatus.
- FIG. 6 is a perspective view showing a form of a mold device.
- FIGS. 2 to 6 An embodiment of the present invention will now be described on the basis of FIGS. 2 to 6 .
- FIG. 2 is an outside drawing showing a form of a portable computer 10 such as a notebook computer used as a kind of electronic apparatus.
- the portable computer 10 comprises a computer main body 11 , and a display unit 12 which is rotatably supported on the computer main body 11 .
- the computer main body 11 comprises a housing 13
- the housing 13 has a structure wherein a lower housing 14 and an upper housing 15 are joined by screw or the like.
- the structure for joining the lower housing 14 and the upper housing 15 is not limited to it, and the housings may be jointed by other structures.
- the electronic apparatus housing 20 shown in FIG. 4, which is used for an electronic apparatus such as personal computer and formed of a light metal made of a magnesium alloy has boss portions 21 in order to mount an electronic circuit and other various parts inside.
- the electronic apparatus housing 20 in order to form the boss portions 21 , the electronic apparatus housing 20 is formed by the following steps.
- a mold device 30 used in FIG. 6 is used in order to form the electronic apparatus housing 20 .
- the mold device 30 comprises an upper mold 31 and a lower mold 32 , and the mold device 30 is formed by engaging these molds.
- the mold device 30 is provided with a sprue 33 which is an introducing port of molten metal, and a runner 34 which guides molten metal from the sprue 33 into a cavity 35 of the mold device 30 so that the molten metal is uniformly diffused.
- the molten metal guided by the runner 34 is introduced into the cavity 35 of the mold device 30 .
- the molten metal is a molten magnesium alloy.
- a molten metal of a molten aluminum alloy can be used, for example.
- the internal wall surface of the cavity 35 is hollowed by a predetermined diameter to form hole portions 36 .
- the hole portions 36 do not have a height necessary as the boss portions 21 , the depth of the hole portions 36 are set so as to form projecting portions 22 having a height to reach a halfway portion of the boss portions 21 .
- the molten metal filled into the cavity 35 reaches an air vent 37 provided on the other end side of the cavity 35 .
- the air vent 37 is aimed at releasing air existing in the cavity 35 from the inside of the cavity 35 to the outside. Thereby, the molten metal introduced into the cavity 35 reaches a basin 38 while generation of void in the cavity 35 is prevented.
- the molten metal is introduced into the cavity 35 by injection molding so that the molten metal instantly reaches the above air vent 37 .
- the molten metal reaches the air vent 37 , since the temperature of the mold device 30 is low, that is, about 100-350°, the solidification of the molten metal as a molded product 40 is started immediately in a part of the internal wall surface of the mold device 30 with which the molten metal is brought in contact (a housing forming step).
- the molded product 40 is taken out from the mold device 30 . Then, a screw hole 23 serving as a female screw is formed at each projecting portion 22 , and a boss separate body 24 formed as a separate piece is engaged in the screw hole 23 (a boss-portion forming step).
- the boss separate body 24 is formed of metal, and has a structure for conducting charged electricity to the molded product 40 when an electric circuit 41 or the like mounted on the upper end side of the boss separate body 24 is charged.
- the boss separate body 24 is provided with a screw portion 26 which is formed with a smaller diameter to project from a main body 25 of the boss separate body 24 so as to correspond to the screw hole 23 formed at the projecting portion 22 .
- the boss separate body 24 has a structure wherein the screw portion 26 is formed with a smaller diameter to project from the main body 25 of the boss separate body 24 .
- a screw groove serving as a male screw is formed on an external surface of the screw portion 26 .
- the screw groove is engaged with the screw hole 23 , and thereby the boss separate body 24 is fixed to the projecting portion 22 by screw engagement.
- an external diameter of the boss separate body 24 is formed to be almost equivalent to that of the projecting portion 22 . Thereby, the external diameter of the boss portion 21 is made uniform.
- An engaging hole 27 for engaging another member is formed in the boss separate body 24 downward from the upper end of the boss separate body 24 .
- the engaging hole 27 is provided for mounting and fixing the electronic circuit 41 and other various parts which are separated from the electronic apparatus housing 20 .
- the boss portion 21 is formed by forming the screw hole 23 at the projecting portion 22 of the molded product 40 , further providing the boss separate body 24 and forming a screw groove on the screw portion 26 , and engaging the boss separate body 24 in the screw hole 23 .
- an electronic circuit or other various parts can be fixedly engaged in the engaging hole 27 located in the boss portion 21 via a screw and bolt.
- the hole portions 36 are formed to project to conform to the projecting portions 22 , and the molded product 40 is formed by introducing the molten metal into the hole portions 36 . Therefore, if the height of the projecting portions 22 is made low, that is, if the depth of the hole portions 36 of the mold device 30 is made shallow, it is possible to flow the molten metal into the hole portions 36 in a good state.
- the apparatus has the structure wherein the boss separate body 24 is separately fixed by screw engagement to the projecting portion 22 whose height is reduced, if the height of the boss separate body 24 is set appropriately, it is possible to set the boss portions 21 to a desired height.
- the boss separate body 24 is formed of metal, even if the electronic circuit 41 or the like is mounted on the upper end side of the boss separate body 24 , the electronic circuit 41 or the like is not charged with static electricity and the static electricity is introduced into the molded product 40 through the boss separate body 24 . Specifically, the electronic circuit 41 or the like is earthed.
- the apparatus since the apparatus has the structure wherein the projecting portions 22 are formed and the boss separate bodies 24 are fixed to the projecting portions 22 by screw engagement, there is no inconvenience that screw threads project from a lower surface of the thin molded product 40 , in comparison with the case where the boss separate bodies 24 are mounted on a part where projecting portions 22 are not formed. Therefore, in the case where a personal computer or the like is placed with its lower surface positioned at the bottom, it is possible to improve the stability in placement. Further, in order to improve the stability in placement, there is no need to form hollows for receiving head portions of bolts.
- boss separate bodies 24 are engaged with the projecting portions 22
- boss separate bodies 24 may also be mounted on the projecting portions 22 by means of press fitting or caulking, for example.
- the apparatus may have a structure wherein the screw portion 26 provided on the boss separate body 24 and the screw hole 23 are provided vice versa.
- the lower end of each boss separate body 24 is formed to have a larger diameter and a screw hole is formed in the portion, and each projecting portion is formed to have a smaller diameter and a screw thread is formed on the external surface of the projecting portion 22 to form a screw portion.
Abstract
In an electronic apparatus such as a portable computer comprising an electronic apparatus housing having boss portions, projecting portions are formed at locations where boss portions are to be formed. In addition, a boss separate body is provided which has an engaging hole therein and is to be attached to each of the projecting portions to form the boss portions.
Description
- This is a Continuation of Application No. PCT/JP99/01763, filed Apr. 2, 1999.
- This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 10-173020, filed Jun. 19, 1998, the entire contents of which are incorporated herein by reference.
- This invention relates to a housing for electronic apparatuses such as personal computers, in particular, a boss structure of an electronic apparatus housing.
- Recently, a housing mainly using a magnesium alloy as material is adopted as an electronic apparatus housing formed of light metal. The alloy is molded by a die-cast method and a thixotropy method. Although these molding methods are different in the device structure, they are performed under the condition where the alloy which has been molten at 580-750° C. is injected and molded in a mold having a temperature of 100-350° C.
- FIG. 1 shows a structure of a conventional electronic apparatus housing. In an
electronic apparatus housing 1, molten metal is introduced from asprue 2 which is a part for introducing molten metal into a molding device (in FIG. 1, explanation is made by using parts corresponding to the form of the electronic apparatus housing immediately after molding), and passed through arunner 3 so that the molten metal is introduced into a desired mold. The introduced molten metal extends through thewhole cavity 4 to reach anair vent 5. Abasin 6 is further connected to theair vent 5. Therefore, when the molten metal is introduced from thesprue 2, air can be released outside through theair vent 5, and thereby the housing can be formed in the state where no void exists in the housing. - A plurality of bosses7 are provided on the
electronic apparatus housing 1 in order to mount various electronic circuits or the like on the housing. The bosses 7 are formed as one piece with a bottom portion of theelectronic apparatus housing 1 by pouring the molten metal in concave hole portions formed in the mold. Further, the bosses 7 are provided so as to project from the bottom portion of theelectronic apparatus housing 1. - Further, screw holes8 are formed at the bosses 7, which make it possible to engage an electronic circuit and other various parts by screw.
- In the meantime, the hole portions which are formed in the mold in order to form the bosses7 are formed in the form of a deep groove in a direction perpendicular to a direction of flow of the molten metal along the
cavity 4 of the mold, so as to conform to the form of the bosses 7 of theelectronic apparatus housing 1. In this case, though the molten metal easily flows in a direction along the flow of the molten metal of thecavity 4, the holes are formed perpendicular to thecavity 4, and therefore the molten metal does not easily flow into the holes as the form of the holes is made deeper. - Specifically, since the temperature of the mold is lower than the temperature of the molten metal, when the molten metal comes into contact with an internal wall of the mold, solidification of the molten metal is quickly started. However, when the holes are formed deeply, solidification of the molten metal is started before the molten metal flows into the end portion side of the holes. Therefore, a portion into which the molten metal is not filled is generated, and there are cases where the bosses7 are not formed in a desired form, or do not have a desired height.
- In the case where such bosses7 are formed, screw holes 8 cannot be formed inside the bosses 7 in a good state, and there can be produced an inconvenience that an electronic circuit and other various parts cannot be fixed in a good state.
- The present invention has been made on the basis of the above circumstances. The object of the invention is to provide an electronic apparatus having a housing which includes no non-filled portion and can form a boss form in a good state, and a method of manufacturing thereof.
- In one preferred embodiment, an electronic apparatus of the present invention comprises a housing, and a boss member formed as a separate piece from the housing and mounted on the housing to form a boss portion.
- Further, a method of manufacturing an electronic apparatus of the present invention is a method of manufacturing an electronic apparatus having a housing with a boss portion of a predetermined height, comprising the steps of: a housing forming step for forming the housing introducing molten metal into a mold device, the housing having a projecting portion at a location where the boss portion is to be formed, and the housing constituting portions other than the boss portion of the housing; and a boss portion forming step for forming the boss portion by fixedly engaging a boss member, which is to constitute the boss portion, with the projecting portion.
- Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out hereinafter.
- The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate presently preferred embodiments of the invention, and together with the general description given above and the detailed description of the preferred embodiments given below, serve to explain the principles of the invention.
- FIG. 1 is a perspective view showing a form of an electronic apparatus housing concerning conventional art;
- FIG. 2 is a perspective view showing a structure of a portable computer used as an electronic apparatus concerning an embodiment of the present invention;
- FIG. 3 is a diagram showing a flow chart of a method of manufacturing the electronic apparatus;
- FIG. 4 is a perspective view showing a form of an electronic apparatus housing used for the electronic apparatus;
- FIG. 5 is a side cross-sectional view showing a state of a boss portion and around the boss portion of the electronic apparatus; and
- FIG. 6 is a perspective view showing a form of a mold device.
- An embodiment of the present invention will now be described on the basis of FIGS.2 to 6.
- FIG. 2 is an outside drawing showing a form of a
portable computer 10 such as a notebook computer used as a kind of electronic apparatus. In FIG. 2, theportable computer 10 comprises a computermain body 11, and adisplay unit 12 which is rotatably supported on the computermain body 11. Further, the computermain body 11 comprises ahousing 13, and thehousing 13 has a structure wherein alower housing 14 and anupper housing 15 are joined by screw or the like. However, the structure for joining thelower housing 14 and theupper housing 15 is not limited to it, and the housings may be jointed by other structures. - In the following description, a housing applied to an electronic apparatus such as the
portable computer 10 will be explained as anelectronic apparatus housing 20, and a method of manufacturing an electronic apparatus using theelectronic apparatus housing 20 will also be explained. Further, the method of manufacturing the electronic apparatus is shown in FIG. 3, and the process will also be described. - The
electronic apparatus housing 20 shown in FIG. 4, which is used for an electronic apparatus such as personal computer and formed of a light metal made of a magnesium alloy hasboss portions 21 in order to mount an electronic circuit and other various parts inside. In the electronic apparatus housing 20, in order to form theboss portions 21, theelectronic apparatus housing 20 is formed by the following steps. - Specifically, a
mold device 30 used in FIG. 6 is used in order to form theelectronic apparatus housing 20. Themold device 30 comprises anupper mold 31 and alower mold 32, and themold device 30 is formed by engaging these molds. Themold device 30 is provided with a sprue 33 which is an introducing port of molten metal, and arunner 34 which guides molten metal from the sprue 33 into acavity 35 of themold device 30 so that the molten metal is uniformly diffused. The molten metal guided by therunner 34 is introduced into thecavity 35 of themold device 30. - The molten metal is a molten magnesium alloy. In addition to this, a molten metal of a molten aluminum alloy can be used, for example.
- In the
cavity 35, in order to formboss portions 21 projecting from a bottom surface of the aboveelectronic apparatus housing 20, the internal wall surface of thecavity 35 is hollowed by a predetermined diameter to formhole portions 36. Although thehole portions 36 do not have a height necessary as theboss portions 21, the depth of thehole portions 36 are set so as to form projectingportions 22 having a height to reach a halfway portion of theboss portions 21. - Specifically, in the case where a molten metal of magnesium alloy is used, when the diameter of the projecting
portions 22 is d and the height of the projectingportions 22 is h as shown in FIG. 5, they are provided so as to fall within the range of h/d= 1.5-2.0. - The molten metal filled into the
cavity 35 reaches anair vent 37 provided on the other end side of thecavity 35. Theair vent 37 is aimed at releasing air existing in thecavity 35 from the inside of thecavity 35 to the outside. Thereby, the molten metal introduced into thecavity 35 reaches abasin 38 while generation of void in thecavity 35 is prevented. - The molten metal is introduced into the
cavity 35 by injection molding so that the molten metal instantly reaches theabove air vent 37. When the molten metal reaches theair vent 37, since the temperature of themold device 30 is low, that is, about 100-350°, the solidification of the molten metal as a moldedproduct 40 is started immediately in a part of the internal wall surface of themold device 30 with which the molten metal is brought in contact (a housing forming step). - After the molded
product 40 has been formed, the moldedproduct 40 is taken out from themold device 30. Then, ascrew hole 23 serving as a female screw is formed at each projectingportion 22, and a bossseparate body 24 formed as a separate piece is engaged in the screw hole 23 (a boss-portion forming step). The bossseparate body 24 is formed of metal, and has a structure for conducting charged electricity to the moldedproduct 40 when anelectric circuit 41 or the like mounted on the upper end side of the bossseparate body 24 is charged. - As shown in FIG. 5, in order to make it possible to mount the boss
separate body 24 by screw engagement, the bossseparate body 24 is provided with ascrew portion 26 which is formed with a smaller diameter to project from amain body 25 of the bossseparate body 24 so as to correspond to thescrew hole 23 formed at the projectingportion 22. Specifically, the bossseparate body 24 has a structure wherein thescrew portion 26 is formed with a smaller diameter to project from themain body 25 of the bossseparate body 24. - A screw groove serving as a male screw is formed on an external surface of the
screw portion 26. The screw groove is engaged with thescrew hole 23, and thereby the bossseparate body 24 is fixed to the projectingportion 22 by screw engagement. - Further, an external diameter of the boss
separate body 24 is formed to be almost equivalent to that of the projectingportion 22. Thereby, the external diameter of theboss portion 21 is made uniform. - An engaging
hole 27 for engaging another member is formed in the bossseparate body 24 downward from the upper end of the bossseparate body 24. The engaginghole 27 is provided for mounting and fixing theelectronic circuit 41 and other various parts which are separated from theelectronic apparatus housing 20. - Specifically, the
boss portion 21 is formed by forming thescrew hole 23 at the projectingportion 22 of the moldedproduct 40, further providing the bossseparate body 24 and forming a screw groove on thescrew portion 26, and engaging the bossseparate body 24 in thescrew hole 23. - Thereby, an electronic circuit or other various parts can be fixedly engaged in the engaging
hole 27 located in theboss portion 21 via a screw and bolt. - According to the
electronic apparatus housing 20 and the method of manufacturing theelectronic apparatus housing 20 having the structure as described above, in themold device 30, thehole portions 36 are formed to project to conform to the projectingportions 22, and the moldedproduct 40 is formed by introducing the molten metal into thehole portions 36. Therefore, if the height of the projectingportions 22 is made low, that is, if the depth of thehole portions 36 of themold device 30 is made shallow, it is possible to flow the molten metal into thehole portions 36 in a good state. - Specifically, when the molten metal is introduced into the
cavity 35, in particular, in the case where the diameter of the projectingportions 22 is d and the height thereof is h, by setting d and h within the range of h/d=1.5-2.0, it is possible to fill the molten metal into the hole portions earlier than start of solidification of the molten metal. - Therefore, even in the case of using a molten metal of magnesium alloy having a low flowability, whose flowability is apt to deteriorate when it comes into contact with a low-temperature part inside the
cavity 35, it is possible to fill the molten metal in a good state into the end portion side of thehole portions 36. Thereby, no non-filled portion is generated in thehole portions 36, and it is possible to form the projectingportions 22 in a good state. - Further, since the apparatus has the structure wherein the boss
separate body 24 is separately fixed by screw engagement to the projectingportion 22 whose height is reduced, if the height of the bossseparate body 24 is set appropriately, it is possible to set theboss portions 21 to a desired height. - Furthermore, since the boss
separate body 24 is formed of metal, even if theelectronic circuit 41 or the like is mounted on the upper end side of the bossseparate body 24, theelectronic circuit 41 or the like is not charged with static electricity and the static electricity is introduced into the moldedproduct 40 through the bossseparate body 24. Specifically, theelectronic circuit 41 or the like is earthed. - Thereby, it is possible to prevent break of the
electronic circuit 41 or the like due to flowing of a large current into theelectronic circuit 41 or the like by short circuit. - Further, since the apparatus has the structure wherein the projecting
portions 22 are formed and the bossseparate bodies 24 are fixed to the projectingportions 22 by screw engagement, there is no inconvenience that screw threads project from a lower surface of the thin moldedproduct 40, in comparison with the case where the bossseparate bodies 24 are mounted on a part where projectingportions 22 are not formed. Therefore, in the case where a personal computer or the like is placed with its lower surface positioned at the bottom, it is possible to improve the stability in placement. Further, in order to improve the stability in placement, there is no need to form hollows for receiving head portions of bolts. - Although the embodiment of the present invention has been described above, in addition to the above, the present invention can be modified in various ways as described below.
- Although in the above embodiment the boss
separate bodies 24 are engaged with the projectingportions 22, the bossseparate bodies 24 may also be mounted on the projectingportions 22 by means of press fitting or caulking, for example. - Further, the apparatus may have a structure wherein the
screw portion 26 provided on the bossseparate body 24 and thescrew hole 23 are provided vice versa. Specifically, the lower end of each bossseparate body 24 is formed to have a larger diameter and a screw hole is formed in the portion, and each projecting portion is formed to have a smaller diameter and a screw thread is formed on the external surface of the projectingportion 22 to form a screw portion. - Further, other various modifications are possible within the range which does not change the gist of the present invention.
- Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.
Claims (6)
1. An electronic apparatus comprising:
a housing formed as one piece with a first boss member; and
a second boss member formed as a separate piece from said first boss member, and mounted on said housing to form a boss portion.
2. An electronic apparatus comprising:
a housing having a projecting portion formed as one piece therewith; and
a boss member to be mounted on said projecting portion to form a boss portion.
3. An electronic apparatus according to ,
claim 2
wherein said second boss member is fixed to said projecting portion by screw engagement.
4. An electronic apparatus according to ,
claim 2
wherein a height of projection of said projecting portions from said housing is within a range of approximately 1.5-2.0 times an external diameter of the projecting portions.
5. An electronic apparatus according to , wherein said housing is formed of a magnesium alloy, and said boss members are formed of metal.
claim 1
6. A method of manufacturing an electronic apparatus having a housing with a boss portion, comprising the steps of:
a housing forming step for forming the housing introducing molten metal into a mold device, the housing having a projecting portion at a location where said boss portion is to be formed, and the housing constituting portions other than the boss portion of said housing; and
a boss portion forming step for forming the boss portion by fixedly engaging a boss member, which is to constitute the boss portion, with said projecting portion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10-173020 | 1998-06-19 | ||
JP10173020A JP2000005858A (en) | 1998-06-19 | 1998-06-19 | Electronic equipment and its manufacture |
PCT/JP1999/001763 WO1999066773A1 (en) | 1998-06-19 | 1999-04-02 | Electronic apparatus and method of manufacturing the same |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/001763 Continuation WO1999066773A1 (en) | 1998-06-19 | 1999-04-02 | Electronic apparatus and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20010002021A1 true US20010002021A1 (en) | 2001-05-31 |
Family
ID=15952729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/737,867 Abandoned US20010002021A1 (en) | 1998-06-19 | 2000-12-18 | Electronic apparatus and method of manufacturing thereof |
Country Status (5)
Country | Link |
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US (1) | US20010002021A1 (en) |
JP (1) | JP2000005858A (en) |
CN (1) | CN1306738A (en) |
TW (1) | TW411757B (en) |
WO (1) | WO1999066773A1 (en) |
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US7463481B2 (en) * | 2005-03-09 | 2008-12-09 | Hewlett-Packard Development Company, L.P. | Computer with hinge post and hinge mount and related methods |
DE102007008012A1 (en) | 2007-02-15 | 2008-08-21 | Hans-Jürgen Vieths | Small timber bundling device |
WO2015035537A1 (en) * | 2013-09-16 | 2015-03-19 | Zhang Xuli | Thin housing structure and manufacturing method thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0484496A (en) * | 1990-07-27 | 1992-03-17 | Nippon Light Metal Co Ltd | Cage for electronic apparatus |
JPH0456388U (en) * | 1990-09-21 | 1992-05-14 | ||
JPH06237086A (en) * | 1993-02-10 | 1994-08-23 | Nippon Motorola Ltd | Portable electronic device |
JPH08236951A (en) * | 1995-02-24 | 1996-09-13 | Sony Corp | Electronic equipment |
JPH09331181A (en) * | 1996-06-13 | 1997-12-22 | Nec Corp | Fastening structure of electronic equipment case |
-
1998
- 1998-06-19 JP JP10173020A patent/JP2000005858A/en active Pending
-
1999
- 1999-03-09 TW TW088103629A patent/TW411757B/en not_active IP Right Cessation
- 1999-04-02 WO PCT/JP1999/001763 patent/WO1999066773A1/en active Application Filing
- 1999-04-02 CN CN99807597.3A patent/CN1306738A/en active Pending
-
2000
- 2000-12-18 US US09/737,867 patent/US20010002021A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN1306738A (en) | 2001-08-01 |
JP2000005858A (en) | 2000-01-11 |
WO1999066773A1 (en) | 1999-12-23 |
TW411757B (en) | 2000-11-11 |
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Legal Events
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AS | Assignment |
Owner name: KABUSHIKI KAISHA TOSHIBA, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOSOI, TAKASHI;TAKAKI, NOBUYUKI;ONO, YASUO;REEL/FRAME:011367/0624 Effective date: 20001122 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |