GB2327538A - Electronic equipment housing having an alterable mounting leg - Google Patents
Electronic equipment housing having an alterable mounting leg Download PDFInfo
- Publication number
- GB2327538A GB2327538A GB9812153A GB9812153A GB2327538A GB 2327538 A GB2327538 A GB 2327538A GB 9812153 A GB9812153 A GB 9812153A GB 9812153 A GB9812153 A GB 9812153A GB 2327538 A GB2327538 A GB 2327538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bottom wall
- electronic equipment
- mounting leg
- frame body
- support portion
- 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.)
- Granted
Links
Classifications
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/006—Casings specially adapted for signal processing applications, e.g. CATV, tuner, antennas amplifier
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Casings For Electric Apparatus (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
An electronic equipment housing comprises a rectangular frame body produced of a metal plate and having an open section (5) on at least one side and a bottom wall (4), and a printed circuit board (7) is mounted in said frame body through said open section side; wherein, on said bottom wall is formed a mounting leg (4d) which is cut from the bottom wall and raised upright, the mounting leg having a first portion (4e) which is perpendicular to the bottom wall, a second portion (4g, Fig.4) parallel to the bottom wall and a third portion (4d) perpendicular to the bottom wall. The leg is used for mounting the equipment on a circuit board and its effective mounting position can be varied by altering the point at which the second portion (4g) is bent with respect to the first portion (4e).
Description
ELECTRONIC EQUIPMENT
The present invention relates to a preferable electronic equipment for use in a TV tuner, modulator, etc. and, more particularly, to the constitution of a frame body having mounting legs on which the electronic equipment will be mounted.
A prior art electronic equipment for use in a TV tuner will be described by referring to Fig. 6. Fig. 6 is a perspective view showing the prior art electronic equipment upside down, in which a frame body 21 produced of a relatively thin metal plate with workability taken into account has an upper wall 22, a pair of side walls 23, and a bottom wall 24, and is formed in a rectangular box shape provided with open sections 25 and 26 on both the front and back sides.
The pair of side walls 23 are provided with a pair of legs 23a and 23b at corners, each protruding out downwardly (out upwardly in Fig. 6).
On the open section 26 side, the bottom wall 24 has a wide cutout portion 24a and a narrow escape cutout portion 24b which continue with each other. Between the cutout portion 24a and the escape cutout portion 24b, a step portion 24c is formed.
Such a structure is provided in several places.
On the bottom wall 24 there is formed a mounting leg 24d which is cut and raised sideward, that is, erected outwardly in relation to the surface of the bottom wall 24, adjacently to the escape cutout portion 24b located at center. As a result of the cutting and raising of the mounting leg 24d, a cutout portion 24e is formed, continuing to the escape cutout portion 24b. The mounting leg 24d is positioned on the same straight line S2 connecting the two legs 23a on the side wall 23.
On the printed circuit board 27 is provided an unillustrated desired conductive pattern and are mounted various kinds of electric components not shown. Furthermore, a plurality of lead-out terminals 28 are attached thereto.
The printed circuit board 27 is inserted into, and housed in, the frame body 21 through the open section 26 of the frame body 21. The printed circuit board 27 thus inserted in the wide cutout portion 24a and held in contact with the step portion 24c is secured by appropriate means to the frame body 21.
With the printed circuit board 27 mounted, the lead-out terminals 28 are protruded in the same direction as the mounting leg 24d through the inside of the escape cutout portion 24b.
In the electronic equipment the open sections 25 and 26 are closed, though not illustrated, with two covers having arms around the frame body 21 for elastically jointing and securing to each wall of the frame body 21.
Furthermore, in the electronic equipment the legs 23a and 23b, mounting leg 24d, and lead-out terminal 28 are inserted in holes of for instance an unillustrated mother printed circuit board of a TV receiver, and securely soldered to the conductive pattern of the mother printed circuit board.
The legs 23a and 23b are formed in the vicinity of the corners of the side wall 23 to increase the mounting strength of the frame body 21. The mounting leg 24d is positioned on a straight line S2 connecting the two legs 23a for the purpose of increasing the mounting strength in order to ensure reliable grounding and also standardizing mounting to the mother printed circuit board.
Furthermore, because there are various types of electronic equipment, and the constitution of the frame body 21 differs a little among types, it is necessary to change the location of the mounting leg 24d with respect to the holes in the mother printed circuit board.
The prior art electronic equipment, however, has such a problem that the cutout portion 24e cut to form the mounting leg 24d on the bottom wall 24 of the frame body 21 is formed continuously to the escape cutout portion 24d. Therefore the wall thickness of the bottom wall 24 decreases, resulting in decreased strength of the frame body 21. Also, if a thin plate material is employed in an attempt to reduce costs, the frame body 21 will deflect, adversely affecting mounting to the mother printed circuit board.
The position where the mounting leg 24b is cut and erected must be changed for each type; the frame body 21, therefore, can not be versatile and accordingly will become costly.
As first means for solving the problems described above, the electronic equipment is comprised of a rectangular frame body produced of a metal plate and having a bottom wall and an open face on at least one side, and a printed circuit board mounted in the frame body from the open face.
On the bottom wall is formed a mounting leg having an erect piece raised vertically downward and a transverse support portion connected to a side edge of the erect piece and extended in an upright state in parallel with the bottom wall, and a vertical support portion connected with the end of transverse support portion and extended downward at right angles with the transverse support portion.
In a preferred embodiment, a cutout portion for insertion of the printed circuit board and an escape cutout portion for the lead-out terminals mounted on the printed circuit board are continuously formed on the open side of the bottom wall; and the mounting leg is formed by utilizing a plate portion of the cutout portion and the escape cutout portion.
In a preferred embodiment, a pair of side walls with legs are provided on both sides of the bottom wall of the frame body, and the legs and the vertical support portion of the mounting leg are formed on a straight line and also protruded in the same direction.
Embodiments of the invention, will now be described, by way of example only, with reference to the acompanying drawings, in which:
Fig. 1 is a front view of an electronic equipment of the present invention;
Fig. 2 is a rear view of the electronic equipment of the present invention;
Fig. 3 is a perspective view showing the electronic equipment of the present invention upside down;
Fig. 4 is an enlarged perspective view of a mounting leg of the electronic equipment of the present invention;
Fig. 5 is an explanatory view showing cutting lines of the mounting leg of the electronic equipment of the present invention; and
Fig. 6 is a perspective view showing a prior art electronic equipment placed upside down.
electronic equipment of the present invention will be described with reference to Fig. 1 to Fig. 5, in which Fig.
1 is a front view of the electronic equipment of the present invention; Fig. 2 is a rear view of the electronic equipment of the present invention; Fig. 3 is a perspective view showing the electronic equipment of the present invention placed upside down; Fig. 4 is an enlarged perspective view of a mounting leg of the electronic equipment of the present invention; and Fig.
5 is an explanatory view showing cutting lines of the mounting leg of the electronic equipment according to the present invention.
The electronic equipment of the present invention for use in a TV tuner will be described by referring to Fig. 1 to Fig.
5. A frame body 1 is a rectangular box type having open face 5 and 6 on both front and back sides. The frame body 1 is produced of a relatively thin metal plate for the purpose of reducing costs and improving workability, and has a top wall 2, a pair of side walls 3, and a bottom wall 4.
On the pair of side walls 3 are provided a pair of legs 3a and 3b at each corner, each protruding out downwardly from the vicinity of the corners. The legs 3a and 3b are disposed on both sides of the bottom wall 4.
On the open face 6 side, the bottom wall 4 has a wide cutout portion 4a and a narrow escape cutout portion 4b which are continuously formed. Between the cutout portion 4a and the escape cutout portion 4b a step portion 4c is provided. Such a structure is formed in several places.
Also on the bottom wall 4 is formed a mounting leg 4d erected outwardly (downwardly) to the bottom wall 4, adjacently to the escape cutout portion 4b located at center.
Themounting leg 4d, as shown in Figs. 3 and 4, is comprised of the erect piece 4e formed by cutting and raising a plate portion from the cutout portion 4a and the escape cutout portion 4b, in parallel with the open face 6, by utilizing the plate portion of the cutout portion 4a and the escape cutout portion 4b as shown in Fig. 5, and a transverse support portion 4g connected to one side edge of the erect piece 4e and extended upright in relation to, and in parallel with, the bottom wall 4, and the vertical support portion 4h connected with the end of transverse support portion 4g and extended outwardly (downwardly) at right angles with the transverse support portion 4g The vertical support portion 4h of the mounting leg 4d is located on the line S1 connecting the two legs 3a of the side wall 3, protruding out in the same direction as the leg 3a.
The printed circuit board 7 has a desirable electric conductive pattern not shown, on which various kinds of unillustrated electric components and a plurality of leadout terminals 8 are mounted.
The printed circuit board 7 thus constituted is housed within the frame body 1 from the open face 6 of the frame body 1, partly being inserted in the wide cutout portion 4a and secured, in engagement with the step portion 4c, to the frame body 1 by appropriate fastening means.
After the mounting of the printed circuit board 7, the lead-out terminals 8 protrude out in the same direction as the mounting leg 4d through the inside of the escape cutout portion 4b.
Also, the open face 5 and 6 are closed with two unillustrated covers each having arms around for elastically connecting and holding the cover to the wall of the frame body 1.
The electronic equipment described above is secured by inserting the legs 3a and 3b, the mounting leg 4d, and the lead-out terminals 8 into holes in an unillustrated mother printed circuit board of for instance a TV receiver, and soldering these parts to a conductive pattern on the mother printed circuit board.
The legs 3a and 3b are formed in the vicinity of corners of the side wall 3 for the purpose of increasing the mounting strength of the frame body 1; and also the mounting leg 4d is formed to provide a greater mounting strength to ensure reliable grounding. Furthermore, the vertical support portion 4h of the mounting leg 4d is positioned on the straight line S1 connecting the two legs 3a in order to standardize the mounting of the electronic equipment to the mother printed circuit board.
The mounting leg 4d is designed such that the mounting leg 4d has the transverse support portion 4g and the vertical support portion 4h, and therefore the location of the vertical support portion 4h can be altered by changing a distance from one side edge of the erect piece 4e to the bending position of the transverse support portion 4g.
Therefore, it is possible to mount various models of electronic equipment, notwithstanding a slight difference in the constitution of the frame body 1 between models, by using a common mounting leg 4d and changing the bending position of the transverse support portion 4g in accordance with the location of the holes of the mother printed circuit board.
In the electronic equipment of the present invention, the mounting leg 4d is formed of the erect piece 4e which is raised upright with respect to the bottom wall 4 and in parallel with the open face 6, and the transverse support portion 4g
which is connected with one side edge of the erect piece 4e, bent at right angles with the erect piece 4e, and extended in an upright state in parallel with the bottom wall. It is, therefore, possible to provide a low-cost, good-workability electronic equipment which enables formation of the mounting
leg 4d without reducing the thickness of the plate portion of the bottom wall 4, and fabrication of the frame body 1 of a thin material while increasing the strength of the frame body 1.
Also, since the mounting leg 4d includes the vertical support portion 4h, the position of the vertical support portion 4h, that is, the mounting position, can freely be changed by changing the bending position of the transverse support portion 4g, whereby the frame body 1 is provided with compatibility, thus enabling the provision of a low-cost, highly producible electronic equipment.
Furthermore, since the mounting leg 4d is formed of the plate portion of the cutout portion 4a and the escape cutout portion 4b, efficient blank layout can be achieved to obtain the frame body 1 having the bottom wall 4 of great strength.
It is, therefore, possible to provide an electronic equipment of good performance at a low cost.
Furthermore, since the leg portion 3a of the side wall 3 and the vertical support portion 4h of the mounting leg 4d are formed on the same straight line, it is possible to obtain the frame body 1 easily mountable to the mother printed circuit board and consequently to provide an electronic equipment widely applicable to various types of electronic sets.
Claims (4)
1. Electronic equipment comprising: a rectangular frame body produced of a metal plate and having at least one open face and a bottom wall, and a printed circuit board mounted in said frame body through said open face; wherein, on said bottom wall is formed a mounting leg which has an erect piece raised in parallel with said open face
downward to said bottom wall, and a transverse support
portion connected to a side edge of said erect piece and
extended in an upright state in parallel with said bottom wall,
and a vertical support portion connected to the end of said
transverse support portion and extended downward and at right
angles to said transverse support portion.
2. Electronic equipment according to claim 1, wherein on said bottom wall are continuously formed a cutout portion for insertion of said printed circuit board and an escape cutout portion for lead-out terminals attached to said printed circuit board, and said mounting leg is formed by the use of the plate portion of said cutout portion and said escape cutout portion.
3. Electronic equipment according toclaiml, wherein said frame body is provided with a pair of side walls with legs on both sides of said bottom wall, and said legs and said vertical support portion of said mounting leg are formed own a straight line and are protruded in the same direction.
4. Electronic equipment substantially as hereinbefore described, with reference to, and as illustrated by, any of
Figures 1 to 5 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19286197A JP3400304B2 (en) | 1997-07-17 | 1997-07-17 | Electronics |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9812153D0 GB9812153D0 (en) | 1998-08-05 |
| GB2327538A true GB2327538A (en) | 1999-01-27 |
| GB2327538B GB2327538B (en) | 2002-02-13 |
Family
ID=16298198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9812153A Expired - Fee Related GB2327538B (en) | 1997-07-17 | 1998-06-08 | Electronic equipment |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3400304B2 (en) |
| KR (1) | KR100295784B1 (en) |
| CN (1) | CN1104183C (en) |
| GB (1) | GB2327538B (en) |
| MY (1) | MY118795A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686925B (en) * | 2016-12-16 | 2022-02-22 | 天津七一二通信广播股份有限公司 | Wall-mountable building block type WIFI device with base |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0135211A1 (en) * | 1983-07-14 | 1985-03-27 | Philips Patentverwaltung GmbH | Housing for a wired circuit board |
| EP0135210A1 (en) * | 1983-07-14 | 1985-03-27 | Philips Patentverwaltung GmbH | Metallic shielding case made of folded sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6099585U (en) * | 1983-12-12 | 1985-07-06 | アルプス電気株式会社 | case for electronic equipment |
-
1997
- 1997-07-17 JP JP19286197A patent/JP3400304B2/en not_active Expired - Fee Related
-
1998
- 1998-06-08 GB GB9812153A patent/GB2327538B/en not_active Expired - Fee Related
- 1998-07-16 MY MYPI98003251A patent/MY118795A/en unknown
- 1998-07-16 CN CN98102875A patent/CN1104183C/en not_active Expired - Fee Related
- 1998-07-16 KR KR1019980028812A patent/KR100295784B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0135211A1 (en) * | 1983-07-14 | 1985-03-27 | Philips Patentverwaltung GmbH | Housing for a wired circuit board |
| EP0135210A1 (en) * | 1983-07-14 | 1985-03-27 | Philips Patentverwaltung GmbH | Metallic shielding case made of folded sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1104183C (en) | 2003-03-26 |
| CN1207013A (en) | 1999-02-03 |
| JP3400304B2 (en) | 2003-04-28 |
| MY118795A (en) | 2005-01-31 |
| KR19990013930A (en) | 1999-02-25 |
| GB9812153D0 (en) | 1998-08-05 |
| GB2327538B (en) | 2002-02-13 |
| JPH1140959A (en) | 1999-02-12 |
| KR100295784B1 (en) | 2001-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030608 |