CA1122183A - Holder for a baseless lamp - Google Patents
Holder for a baseless lampInfo
- Publication number
- CA1122183A CA1122183A CA000337526A CA337526A CA1122183A CA 1122183 A CA1122183 A CA 1122183A CA 000337526 A CA000337526 A CA 000337526A CA 337526 A CA337526 A CA 337526A CA 1122183 A CA1122183 A CA 1122183A
- Authority
- CA
- Canada
- Prior art keywords
- board
- engagement
- holder
- flange
- baseless lamp
- 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.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 230000000750 progressive effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/05—Two-pole devices
- H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
- H01R33/09—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for baseless lamp bulb
-
- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure
-
- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
Landscapes
- Connecting Device With Holders (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
Abstract of the Disclosure A holder for fitting a baseless lamp to a board comprises a hollow body into which one end of the baseless lamp is inserted, contacts provided on the hollow body for electrical connection to the board and to the lead lines of the inserted baseless lamp, and an annular engagement flange and a pair of engagement lugs which project from the periphery of the hollow body in locations axially spaced from each other so as to clamp the board therebetween thereby fixing the hollow body to the board, an inclined surface being formed on an end face of the paired engagement lugs so as to define projections which extend towards the annular engagement flange so as to be plastically deformed upon en-gagement with the board, and thus lock the holder to the board.
Description
"A HOLDER FOF~ A BASELESS LA~IP"
This invention relates to a socket device or hollow holder for fitting a baseless lamp to a substrate such as a printed wiring board.
Generally, this type of holder for a baseless lamp is fitted to a printed wiring board by first fixedly setting a baseless lamp in place and then electrically connecting the lead line of the baseless lamp to -the print wire of the board. The prior art hollow cylindrical lampholder is provided with an engagement flange projec-tively formed on the peripheral wall of the hollow cylindrical lampholder and a pair of engagement lugs protrusively formed on the peripheral wall of the hollow cylindrical lampholder to face each other. The printed wiring board is provided with an opening, on the periphery of which a pair of notches shaped complementarily to the paired engagement lugs are formed. The hollow cyllndrical lampholder is partly inserted into the opening, until the paired engagement attachments pass through the corresponding notches. At this point, the hollow cylindrical lampholder is rotated through an angle of 90 to clamp the printed wiring board between the engagement flange and engagement attachments, followed by the fixing of the hollow cylindrical ; lampholder to the printed wiring board.
With the prior art hollow cylindrical holder for a baseless lamp, a space between the engagement flange and the paired engagement lugs has to be defined with ex-tremely high precision with respect to the thickness of the printed wiring board~ IE the space is too nar~ow, grea-t force will be required to rotate the hollow cylindrical lampholder in fixing it to the substrate. Conversely, where the space is too broad, the hollow cylindrical lamp-holder will not be securely fixed to the substrate. In such case, the holder and thus the baseless lamp will be loose and may come away from the board during use.
It is accordingly the object of this invention to provide a holder for a baseless lamp, which can be fitted to a board without dlfficulty, even if the space between the engagement flange and the engagement lugs is not defined with high precision, and, once fitted to the substrate, is not ~ikely to become detached accidentally.
According to an aspect of this invention, there is pro-vided a holder for fitting a baseless lamp to a board, comprising a hollow body for insertion in an aperture in the board and having an axial cavity for receiving a portion of the lamp from which conductor leads ex-tend, contacts having parts extending into the cavity for electrical contact with the leads of the baseless lamp when inserted,a flange for engagement with one side of the board, which flange extends radially from the body and supports parts of said contacts external of said cavity for engagement with the board, and a pair of engagement lugs which protrude radially from the body for engagement with the other side of the board the lugs being spaced axially from the flange by distance less than the thickness of the board so as to clamp the board ~", against the flange when the hollow body is rotated in the aperture in a given direction through a prescribed angle, and an inclined surEace on that end of each of the lugs which faces in the direction opposite to that in which the hollow body is rotated and forms a sharp edge to cut a groove in said board when the body is rotated, said inclined surface defining a projection extending from the lug to-wards the flange, which projection is plastically deformable upon engayement with the board.
This invention can be more fully understood from the following detailed description when taken in conjunction with the accompanying drawings; in which:
Fig. 1 is a plan view of a hollow cylindrical holder for a baseless lamp embodying this invention;
Fig. 2 is a sectional view on line 2-2 of the hollow cylindrical lampholder of Fig. l;
Figs. 3 and 4 are side views of said hollow cylindrical lampholder as seen from the different directions;
-~ Fig. 5 is an oblique view of the protruding section of an engagement lug of the hollow cylindrical lampholder fitted to the substrate;
FigsO 6A-6B, 7A-7B and 8~-SB respectively show the progressive plastic deformation of a projection on the lug defined by an inclined surface of the engagement lug and the resultant sequential changes in the shape of a groove formed in the surface of the board by the projection;
and ;
Fig. 9 is a side view of a modified enyagement luy.
Referring to Figs. 1 to 4, reference numeral 10-de-notes a cylindrical lampholder body which is prepared from electrically insulating synthetic resin and is open at one end. An axially extending cav,ity 11 is provided centrally within said hollow cylindrical body 10. An annular engage-ment flange 12 projects substantially from the axial centre : of the peripheral wall of the hollow cylindrical body 10 in concentric relationsh.i.p. A pair of engagement lugs 13 pro-jec~ from the peripheral wall of the hollow cylindrical body 10 near the open end spaced -from each other by an angle of about 180. As seen from Fig. 4, each engagement lug 13 comprises a vertical portion 14 extending from the annular engagement flange 12 toward the top opening 11, a hori20ntal ;: 15 portion 15 extending from the vertical portion 14 along the periphery of the holder 10 substantially in parallel with ~ the annular engagement flange 12, and a projection 16 formed .`. at the outer extended end of the horizontal portion 15 to protrude koward the annular engagement flanye 12. The pro-jection 16 has a vertical-plane 17 on one side and an inclined plane 18 on the other side, thereby defining a sharp edge. The vertical porkion 14, horizontal portion 15 and projection 16 of each of the paired engagement lugs 13 : are integral protrusions from the peripheral wall of the " 25 hollow cylindrical body 10. The paired engagement lug~ 13 andannular engagement flange 12 are also formed integrally v, ., j7, .
~3 with the hollow cylindrical body 10. The projection 16 is moulded from synthetic plastic resin and has a sharp edge as described above. Where, therefore, a stress is applied to said sharp edge in the opposi-te direction to the inclined portion 18, the sharp edge is plastically deformed.
A pair of mutually Eacing vertical grooves lOa (Fig. 3 are cut out in the upper portion of the peripheral wall of the hollow cylindrical body 10. The groove lOa extends from the upper peripheral edge of the axial cavity 11 of the hollow cylindrical lampholder 1~ to the annular engage-ment flange 12. Parts of a pair oE power supply contacts 19 extend through the paired vertical grooves lOa to have the outer ends of said contacts 19 set on the upper surface of the annular engagement flange 12. An inner part of each power supply contact 19 is disposed in the lower part o:E the axial cavity 11 of the hollow cyl:indrical body 10 to be clamped between a support protuberance projecting from the lower inner wall ofthehollow cyl:indrical body 10 and the inner wall of the axial cavity 11,. A pair of bulb side contacts 20 are integrally formed on both sides of each of said power supply contacts. The paired bulb side contacts 20 extend up opposite sides of the inner wall of the axial cavity 11 of -the hollow cylindrical body 10 towards the open end.
The operation of fitting a baseless lamp to a printed wiring board, using a hollow cylindrical lampholder con-structed as described above, will now be described.
.
~ ?
As shown in Fig. 3, that end of a baseless lamp 21 from which lead lines extend is partly inserted into the axial cavity 11 of the hollow cylindrical body 10 to electrically connect the lead lines (not shown) to the bulb side contacts 20. Thereafter, the baseless lamp 21 in its holder is inserted upwards into an aperture 22b in a synthetic resin insulation substrate or printed wiring board 22, on one side 22a of which are formed printed COII
ductors, until insertion is stopped by the annular engage-ment flange 12. The aperture 22b has a diameter slightlylarger than the outer diameter of the hollow cylindrical body 10. A pair of slots are formed in the inner edge of the aperture 22b at two opposite points to allow or the passage of the paired engagement lugs 13. The printed wiring board 22 has a thickness slightly greater than the spacing between the outer end of the projections 16 and the annular engagement flange 12. The hollow cylindrical body 10 into which the baseless lamp 21 has been inserted is rotated through an angle of substantially 90 in the direction of an arrow indicated in Fig. 4 to force the pro-jections 16 over the surface of the printed wiring board 22 As a result, the printed wiring board Z2 is clamped between the projections 16 and the engagement flange 12, thereby firmly fixing the hollow cylindrical body 10 to the board 22. Since the hollow cylindrical body 10 is rot~ted through an angle of substantially 90, the projections 16 are ,~
plastically deformed by the printed wiring board 22, thereby ensuring a tight fit of the hollow cylindrical body 10 to the printed wiring board 22. When the hollow cylindrical body 10 is rotated, the edge of the vertical plane 17 of e~ch projection 16 engages the upper part of the side wall of the slit portion of the fitting hole 22b into which the projection 16 is inserted. As a result, a groove 22c having a cross sectlon complementary to the shape of the edge of the vertical plane 17 of the projection 16 is formed in the printed wiring board 22. The edge portion itself of the vertical plane 17 of the projection 16 is plastically deformed to increase in width as shown in Fig. 5O When the hollow cylindrical body 10 is ro-tated, projection 16 is plastically deformed to progressively increase in width, so that the groove 22c formed by rotation progressively decreases in depth. The progressive plastic deformation of the projection 16 and the successively changing shape of the groove 22c are illustrated in FLgsn 6A, 6B; 7A, 7B; and 8A, 8B. After the hollow cylindrical lampholder 10 is rotated through an angle of 90, the groove 22c formed in the surface of the board 22 has its cross : section changed due to the plastic deformation of the ~nob 16. As a result, the hollow cylindrical body 10 is preven-ted by the side wall of the groove 22c from being rotated in the opposite direction to that indicated by the arrow of ~` ~ig~ ~, namely, that in which the hollow cylindrical body 10 was initially rotated. The hollow cylindrical body 10 is thus firmly fixed to the board 22. When the hollow cylindrical body 10 is fitted to the printed wiring board 22, the board 22 is already laid out in known manner so as to cause the ou-tput side contac-ts 19 of the hollow cylindrical body 10 to be electrically connected to appro-priate portions of the printed conduc-tors on the board 22.
With a hollow cylindrical holder for a baseless lamp embodying this invention a projection is formed, as described above, on each of a pair of engagement lugs 13 to extend toward an annular engagement flange 12. The plastic deformation of the projection firmly supports -the holder on the printed wiring board with the aid of the engagement flange 12.
.~ With the hollow cylindrical lampholder of the fore-going embodiment, the projection .L6 of each engagement lug 13 was defined by the vertical plane 17 and the inclined plane 18. However, both side walls of said knob 16 may be formed as inclined planes as shown in Fig. 9. Further, the inclined plane need not be restricted to the form shown having a flat surface, but may have an inwardly or ~: outwardly curved surface.
,, , '' "' .
This invention relates to a socket device or hollow holder for fitting a baseless lamp to a substrate such as a printed wiring board.
Generally, this type of holder for a baseless lamp is fitted to a printed wiring board by first fixedly setting a baseless lamp in place and then electrically connecting the lead line of the baseless lamp to -the print wire of the board. The prior art hollow cylindrical lampholder is provided with an engagement flange projec-tively formed on the peripheral wall of the hollow cylindrical lampholder and a pair of engagement lugs protrusively formed on the peripheral wall of the hollow cylindrical lampholder to face each other. The printed wiring board is provided with an opening, on the periphery of which a pair of notches shaped complementarily to the paired engagement lugs are formed. The hollow cyllndrical lampholder is partly inserted into the opening, until the paired engagement attachments pass through the corresponding notches. At this point, the hollow cylindrical lampholder is rotated through an angle of 90 to clamp the printed wiring board between the engagement flange and engagement attachments, followed by the fixing of the hollow cylindrical ; lampholder to the printed wiring board.
With the prior art hollow cylindrical holder for a baseless lamp, a space between the engagement flange and the paired engagement lugs has to be defined with ex-tremely high precision with respect to the thickness of the printed wiring board~ IE the space is too nar~ow, grea-t force will be required to rotate the hollow cylindrical lampholder in fixing it to the substrate. Conversely, where the space is too broad, the hollow cylindrical lamp-holder will not be securely fixed to the substrate. In such case, the holder and thus the baseless lamp will be loose and may come away from the board during use.
It is accordingly the object of this invention to provide a holder for a baseless lamp, which can be fitted to a board without dlfficulty, even if the space between the engagement flange and the engagement lugs is not defined with high precision, and, once fitted to the substrate, is not ~ikely to become detached accidentally.
According to an aspect of this invention, there is pro-vided a holder for fitting a baseless lamp to a board, comprising a hollow body for insertion in an aperture in the board and having an axial cavity for receiving a portion of the lamp from which conductor leads ex-tend, contacts having parts extending into the cavity for electrical contact with the leads of the baseless lamp when inserted,a flange for engagement with one side of the board, which flange extends radially from the body and supports parts of said contacts external of said cavity for engagement with the board, and a pair of engagement lugs which protrude radially from the body for engagement with the other side of the board the lugs being spaced axially from the flange by distance less than the thickness of the board so as to clamp the board ~", against the flange when the hollow body is rotated in the aperture in a given direction through a prescribed angle, and an inclined surEace on that end of each of the lugs which faces in the direction opposite to that in which the hollow body is rotated and forms a sharp edge to cut a groove in said board when the body is rotated, said inclined surface defining a projection extending from the lug to-wards the flange, which projection is plastically deformable upon engayement with the board.
This invention can be more fully understood from the following detailed description when taken in conjunction with the accompanying drawings; in which:
Fig. 1 is a plan view of a hollow cylindrical holder for a baseless lamp embodying this invention;
Fig. 2 is a sectional view on line 2-2 of the hollow cylindrical lampholder of Fig. l;
Figs. 3 and 4 are side views of said hollow cylindrical lampholder as seen from the different directions;
-~ Fig. 5 is an oblique view of the protruding section of an engagement lug of the hollow cylindrical lampholder fitted to the substrate;
FigsO 6A-6B, 7A-7B and 8~-SB respectively show the progressive plastic deformation of a projection on the lug defined by an inclined surface of the engagement lug and the resultant sequential changes in the shape of a groove formed in the surface of the board by the projection;
and ;
Fig. 9 is a side view of a modified enyagement luy.
Referring to Figs. 1 to 4, reference numeral 10-de-notes a cylindrical lampholder body which is prepared from electrically insulating synthetic resin and is open at one end. An axially extending cav,ity 11 is provided centrally within said hollow cylindrical body 10. An annular engage-ment flange 12 projects substantially from the axial centre : of the peripheral wall of the hollow cylindrical body 10 in concentric relationsh.i.p. A pair of engagement lugs 13 pro-jec~ from the peripheral wall of the hollow cylindrical body 10 near the open end spaced -from each other by an angle of about 180. As seen from Fig. 4, each engagement lug 13 comprises a vertical portion 14 extending from the annular engagement flange 12 toward the top opening 11, a hori20ntal ;: 15 portion 15 extending from the vertical portion 14 along the periphery of the holder 10 substantially in parallel with ~ the annular engagement flange 12, and a projection 16 formed .`. at the outer extended end of the horizontal portion 15 to protrude koward the annular engagement flanye 12. The pro-jection 16 has a vertical-plane 17 on one side and an inclined plane 18 on the other side, thereby defining a sharp edge. The vertical porkion 14, horizontal portion 15 and projection 16 of each of the paired engagement lugs 13 : are integral protrusions from the peripheral wall of the " 25 hollow cylindrical body 10. The paired engagement lug~ 13 andannular engagement flange 12 are also formed integrally v, ., j7, .
~3 with the hollow cylindrical body 10. The projection 16 is moulded from synthetic plastic resin and has a sharp edge as described above. Where, therefore, a stress is applied to said sharp edge in the opposi-te direction to the inclined portion 18, the sharp edge is plastically deformed.
A pair of mutually Eacing vertical grooves lOa (Fig. 3 are cut out in the upper portion of the peripheral wall of the hollow cylindrical body 10. The groove lOa extends from the upper peripheral edge of the axial cavity 11 of the hollow cylindrical lampholder 1~ to the annular engage-ment flange 12. Parts of a pair oE power supply contacts 19 extend through the paired vertical grooves lOa to have the outer ends of said contacts 19 set on the upper surface of the annular engagement flange 12. An inner part of each power supply contact 19 is disposed in the lower part o:E the axial cavity 11 of the hollow cyl:indrical body 10 to be clamped between a support protuberance projecting from the lower inner wall ofthehollow cyl:indrical body 10 and the inner wall of the axial cavity 11,. A pair of bulb side contacts 20 are integrally formed on both sides of each of said power supply contacts. The paired bulb side contacts 20 extend up opposite sides of the inner wall of the axial cavity 11 of -the hollow cylindrical body 10 towards the open end.
The operation of fitting a baseless lamp to a printed wiring board, using a hollow cylindrical lampholder con-structed as described above, will now be described.
.
~ ?
As shown in Fig. 3, that end of a baseless lamp 21 from which lead lines extend is partly inserted into the axial cavity 11 of the hollow cylindrical body 10 to electrically connect the lead lines (not shown) to the bulb side contacts 20. Thereafter, the baseless lamp 21 in its holder is inserted upwards into an aperture 22b in a synthetic resin insulation substrate or printed wiring board 22, on one side 22a of which are formed printed COII
ductors, until insertion is stopped by the annular engage-ment flange 12. The aperture 22b has a diameter slightlylarger than the outer diameter of the hollow cylindrical body 10. A pair of slots are formed in the inner edge of the aperture 22b at two opposite points to allow or the passage of the paired engagement lugs 13. The printed wiring board 22 has a thickness slightly greater than the spacing between the outer end of the projections 16 and the annular engagement flange 12. The hollow cylindrical body 10 into which the baseless lamp 21 has been inserted is rotated through an angle of substantially 90 in the direction of an arrow indicated in Fig. 4 to force the pro-jections 16 over the surface of the printed wiring board 22 As a result, the printed wiring board Z2 is clamped between the projections 16 and the engagement flange 12, thereby firmly fixing the hollow cylindrical body 10 to the board 22. Since the hollow cylindrical body 10 is rot~ted through an angle of substantially 90, the projections 16 are ,~
plastically deformed by the printed wiring board 22, thereby ensuring a tight fit of the hollow cylindrical body 10 to the printed wiring board 22. When the hollow cylindrical body 10 is rotated, the edge of the vertical plane 17 of e~ch projection 16 engages the upper part of the side wall of the slit portion of the fitting hole 22b into which the projection 16 is inserted. As a result, a groove 22c having a cross sectlon complementary to the shape of the edge of the vertical plane 17 of the projection 16 is formed in the printed wiring board 22. The edge portion itself of the vertical plane 17 of the projection 16 is plastically deformed to increase in width as shown in Fig. 5O When the hollow cylindrical body 10 is ro-tated, projection 16 is plastically deformed to progressively increase in width, so that the groove 22c formed by rotation progressively decreases in depth. The progressive plastic deformation of the projection 16 and the successively changing shape of the groove 22c are illustrated in FLgsn 6A, 6B; 7A, 7B; and 8A, 8B. After the hollow cylindrical lampholder 10 is rotated through an angle of 90, the groove 22c formed in the surface of the board 22 has its cross : section changed due to the plastic deformation of the ~nob 16. As a result, the hollow cylindrical body 10 is preven-ted by the side wall of the groove 22c from being rotated in the opposite direction to that indicated by the arrow of ~` ~ig~ ~, namely, that in which the hollow cylindrical body 10 was initially rotated. The hollow cylindrical body 10 is thus firmly fixed to the board 22. When the hollow cylindrical body 10 is fitted to the printed wiring board 22, the board 22 is already laid out in known manner so as to cause the ou-tput side contac-ts 19 of the hollow cylindrical body 10 to be electrically connected to appro-priate portions of the printed conduc-tors on the board 22.
With a hollow cylindrical holder for a baseless lamp embodying this invention a projection is formed, as described above, on each of a pair of engagement lugs 13 to extend toward an annular engagement flange 12. The plastic deformation of the projection firmly supports -the holder on the printed wiring board with the aid of the engagement flange 12.
.~ With the hollow cylindrical lampholder of the fore-going embodiment, the projection .L6 of each engagement lug 13 was defined by the vertical plane 17 and the inclined plane 18. However, both side walls of said knob 16 may be formed as inclined planes as shown in Fig. 9. Further, the inclined plane need not be restricted to the form shown having a flat surface, but may have an inwardly or ~: outwardly curved surface.
,, , '' "' .
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A holder for fitting a baseless lamp to a board comprising a hollow body for insertion in an aperture in the board and having an axial cavity for receiving a portion of the lamp from which conductor leads extend, contacts having parts extending into the cavity for electrical contact with the leads of the baseless lamp when inserted, a flange for engagement with one side of the board which flange extends radially from the body and supports parts of said contacts external of said cavity for engagement with the board, and a pair of engagement lugs which protrude radially from the body for engagement with the other side of the board, the lugs being spaced axially from the flange by a distance less than the thickness of the board so as to clamp the board against the flange when the hollow body is rotated in the aperture in a given direction through a prescribed angle, and an inclined surface on that end of each of the lugs which faces in the direction opposite to that in which the hollow body is rotated and forms a sharp edge to cut a groove in said board when the body is rotated, said inclined surface defining a projection extending from the lug towards the flange, which projection is plastically deformable upon engagement with the board.
2. The holder for a baseless lamp according to Claim l, in which said hollow body is cylindrical, and the engagement flange has an annular form concentric with the axially central portion of the cylindrical body.
3. The holder for a baseless lamp according to Claim 2, wherein the engagement lugs are spaced from each other through an angle of substantially 180°.
4. The holder for a baseless lamp according to Claim 1, 2 or 3, wherein the parts of the contacts external of the cavity include contact portions for electrical con-nection to the board.
5. The holder for a baseless lamp according to Claim 1, 2 or 3, wherein the cylindrical body, engagement flange and paired engagement lugs are integrally moulded from synthetic resin.
6. The holder for a baseless lamp according to Claim l, 2 or 3, wherein the projection extending from each lug has one side defined by said inclined surface and an opposite side defined by a further inclined surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12467478A JPS5553084A (en) | 1978-10-12 | 1978-10-12 | Socket for baseless lamp |
| JP124674/78 | 1978-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1122183A true CA1122183A (en) | 1982-04-20 |
Family
ID=14891247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000337526A Expired CA1122183A (en) | 1978-10-12 | 1979-10-12 | Holder for a baseless lamp |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5553084A (en) |
| CA (1) | CA1122183A (en) |
| DE (1) | DE2941129A1 (en) |
| GB (1) | GB2036463B (en) |
| IT (1) | IT1164727B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0619180Y2 (en) * | 1987-05-12 | 1994-05-18 | スタンレー電気株式会社 | Socket holder |
| DE60318386T2 (en) | 2002-01-11 | 2008-12-11 | Lg Electronics Inc. | DEVICE FOR SUPPLYING DETERGENT IN WASHING MACHINE |
| JP4930437B2 (en) * | 2008-04-03 | 2012-05-16 | 住友電装株式会社 | connector |
-
1978
- 1978-10-12 JP JP12467478A patent/JPS5553084A/en active Pending
-
1979
- 1979-10-08 GB GB7934809A patent/GB2036463B/en not_active Expired
- 1979-10-10 IT IT50510/79A patent/IT1164727B/en active
- 1979-10-10 DE DE19792941129 patent/DE2941129A1/en not_active Ceased
- 1979-10-12 CA CA000337526A patent/CA1122183A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2036463B (en) | 1983-01-26 |
| DE2941129A1 (en) | 1980-04-17 |
| IT1164727B (en) | 1987-04-15 |
| JPS5553084A (en) | 1980-04-18 |
| IT7950510A0 (en) | 1979-10-10 |
| GB2036463A (en) | 1980-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4152622A (en) | Lamp-base assembly | |
| JPH09320659A (en) | Connection structure of flat cable | |
| US5931690A (en) | Electrical connector | |
| US5616042A (en) | Adapter for converting fluorescent light fixtures | |
| US6379197B2 (en) | Terminal connector | |
| US20030060087A1 (en) | Terminal and connector using same | |
| CA1122183A (en) | Holder for a baseless lamp | |
| WO2001003246A1 (en) | Connector with ground pin for boards | |
| US6607293B2 (en) | Rear combination lamp | |
| CA1108711A (en) | Lamp holder for baseless lamp | |
| US3056941A (en) | Electrical connector | |
| US5722837A (en) | Coaxial cable connector | |
| JP3202095B2 (en) | Lamp holder | |
| JPH0740445B2 (en) | lighting equipment | |
| JP3473497B2 (en) | Mounting structure of round plate terminals | |
| US4228583A (en) | Screw socket assembly device | |
| JPS5841672Y2 (en) | Flat type fluorescent lamp socket | |
| JP2000235802A (en) | Rear combination lamp | |
| JPS6015269Y2 (en) | socket | |
| KR200143170Y1 (en) | Socket assembly of lamp for an automobile | |
| JPH0378754B2 (en) | ||
| CN217848378U (en) | Connector module and connector | |
| JP2001119901A (en) | Flat commutator and manufacturing method therefor | |
| JPH0244663A (en) | Terminal base device | |
| JPH0439672Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |