DK149663B - CONTACT CONNECTOR, SPECIFICALLY FOR BUILT IN COMPONENTS FOR A BUILDING SET FOR BUILDING THE ELECTRIC CIRCUIT - Google Patents
CONTACT CONNECTOR, SPECIFICALLY FOR BUILT IN COMPONENTS FOR A BUILDING SET FOR BUILDING THE ELECTRIC CIRCUIT Download PDFInfo
- Publication number
- DK149663B DK149663B DK386681A DK386681A DK149663B DK 149663 B DK149663 B DK 149663B DK 386681 A DK386681 A DK 386681A DK 386681 A DK386681 A DK 386681A DK 149663 B DK149663 B DK 149663B
- Authority
- DK
- Denmark
- Prior art keywords
- recess
- contact
- spring
- building
- contact spring
- Prior art date
Links
- 238000010276 construction Methods 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/04—Connections between commutator segments and windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/08—Short-circuiting members for bridging contacts in a counterpart
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/32—Connections of conductor to commutator segment
Description
149663149663
Opfindelsen angår et kontaktslutningsorgan, særlig til indbygning i komponenter til et byggesæt, såkaldt elek-trobyggesæt, til opbygning af elektriske strømkredse.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a connector termination device, in particular for incorporation into components of a building kit, so-called electrical building kit, for the construction of electrical circuits.
Komponenterne til et elektrobyggesæt er udformet som 5 plaststøbte byggeelementer, som indeholder elektriske organer, der indgår i de ved komponenternes sammenbygning dannede, elektriske strømkredse. Som andre til et byggesæt hørende byggeelementer skal komponenterne til et elektrobyggesæt kunne sammenbygges og adskilles, 10 og når de er udformet med kontaktslutningsorganer til forbindelse med elektriske ledninger, som indgår i strømkredsene, må disse kontaktslutningsorganer være således indrettet, at de uisolerede ledningsender let kan indføres i og udtages fra de kontaktdannende kom-15 ponenter.The components of an electrical building kit are designed as 5 plastic molded building elements containing electrical means which are included in the electrical circuits formed by the component assembly. Like other building elements belonging to a building set, the components of an electrical building set must be able to be assembled and separated, 10 and when they are designed with electrical connection contacts for electrical wiring included in the circuits, these contact terminal means must be arranged so that the uninsulated cable ends can be easily inserted. in and withdrawn from the contact forming components.
Fra beskrivelsen til tysk OS nr. 2.313.303 kendes et fjedrende kontaktslutningsorgan, der er indsat i et hulrum i et legeme af isolerende materiale, og som danner en ledningsklemme til fastlåsning af den uiso-20 lerede ende af en flad, båndformet leder og til permanent kontaktdannelse mellem denne og en i hulrummet indført kontaktdel.From the specification of German OS No. 2,313,303, a resilient contact closure means is inserted which is inserted into a cavity in a body of insulating material and which forms a conduit terminal for locking the uninsulated end of a flat, ribbon-shaped conductor and for permanent contact between this and a contact part introduced into the cavity.
Den herfra kendte ledningsklemme kan imidlertid ikke anvendes til sådanne i plastkomponenter indbyggede 25 kontaktslutningsorganer, hvori de uisolerede ender af i tværsnit cirkulære ledninger skal kunne indføres til dannelse af en strømkreds, men som også skal kunne udtages og udskiftes med andre ledninger til dannelse af andre strømkredse.However, the conduit known from the above cannot be used for such plug-in components built into plastic components, in which the uninsulated ends of cross-sectional circuits must be able to be inserted to form a circuit, but which must also be removed and replaced with other wires to form other circuits. .
30 For at dette skal kunne lade sig gøre, må ledningsklemmen ved den ene ende være udformet således, at den ved indsætning i en fordybning i plastkomponenten bliver 149663 2 fast og permanent forankret i dennes bund, og ved den anden ende skal den have sideflader, som tjener til at indklemme de uisolerede ledningsender mod fordybningens vægge, men som muliggør, at ledningsenderne 5 kan udtages og udskiftes med andre ledningsender.In order for this to be feasible, the conduit clamp must be formed at one end so that when inserted into a recess in the plastic component it becomes firmly and permanently anchored to its bottom and at the other end it must have side surfaces, which serves to clamp the uninsulated wire ends against the walls of the depression, but which allows the wire ends 5 to be removed and replaced with other wire ends.
Det er formålet med opfindelsen at tilvejebringe et kontaktslutningsorgan, som tilfredsstiller disse fordringer, og ifølge opfindelsen er dette opnået ved at udforme kontaktslutningsorganet med de i krav 1 an-10 givne ejendommeligheder.It is the object of the invention to provide a contact closure means which satisfies these requirements, and according to the invention this is achieved by designing the contact closure means having the features set forth in claim 1.
Ved denne for opfindelsen karakteristiske udformning af kontaktslutningsorganet opnår man, dels at den på tappen i fordybningen (bundtappen) fastklemte kontaktfjeder bliver fast forankret i komponenten, dels at 15 det pilespidsformede hoved på den om tappens akse symmetriske kontaktfjeder danner to modstående klemflader til indklemning af et par uisolerede ledningsender mod fordybningens indervæg med en kraft, som er tilstrækkelig til sikker kontaktdannelse mellem ledningerne og 20 kontaktfjederen, men som dog tillader, at ledningerne kan udtrækkes af kontaktslutningsorganet og udskiftes med et andet ledningspar. Samtidig bevirker modhagerne ved den modsatte ende af kontaktfjederen, at denne tillige fastklemmes mod fordybningens indervæg. Den sym-25 metriske udformning af kontaktfjederen bevirker desuden, at den let kan monteres ved indføring og fastlåsning i fordybningen i plastkomponenten.In this embodiment of the contact closing means, which is characteristic of the invention, one obtains, first, that the contact spring clamped on the pin (bottom pin) is firmly anchored in the component and that the arrowhead shaped head on the symmetrical contact spring about the axis of the pin forms two opposite clamping surfaces for clamping a a pair of uninsulated wire ends against the inner wall of the recess with a force sufficient for safe contact between the wires and the contact spring, but which nevertheless allows the wires to be pulled out by the contact closing means and replaced by another wire pair. At the same time, the barbs at the opposite end of the contact spring cause it to also be clamped against the inner wall of the recess. Furthermore, the symmetrical design of the contact spring means that it can be easily mounted by insertion and locking in the recess in the plastic component.
I en foretrukken udførelsesform for opfindelsen har fordybningen i plastkomponenten rektangulært tværsnit, 30 og i hjørnerne af fordybningen er der udformet støtteribber til dannelse af spalter til indføring og fastklemning af de uisolerede ledningsender, som angivet i krav 2.In a preferred embodiment of the invention, the recess in the plastic component has a rectangular cross-section, and in the corners of the recess support ribs are formed to form slots for inserting and clamping the uninsulated conduit ends as claimed in claim 2.
149663 3149663 3
Til forbindelse af kontaktfjederen med en eller flere yderligere uisolerede ledningsender, som i praksis kan være en tynd tråd, f.eks. en del af en spolevikling, som ska].permanent forbindes med kontaktfjederen, kan 5 der ifølge opfindelsen i bunden af fordybningen og i umiddelbar nærhed af bundtappen findes gennemboringer til indføring af en eller flere sådanne ledningsender, der fastklemmes mellem bundtappens overflade og de indvendige sideflader af den retlinede del af fjederklem-10 men, som angivet i krav 3.For connecting the contact spring with one or more additional uninsulated wire ends, which may in practice be a thin wire, e.g. part of a coil winding to be permanently connected to the contact spring, according to the invention, at the bottom of the recess and in the immediate vicinity of the bottom pin, holes may be provided for inserting one or more such conduit ends which are clamped between the surface of the bottom pin and the inner side surfaces. of the rectilinear portion of the spring clamp, as claimed in claim 3.
På tegningen viser: fig. 1 en til et elektrobyggesæt hørende komponent, set i perspektiv, og i form af en med koblingstappe udformet elektromagnet, som er indrettet til me-15 kanisk sammenkobling med en med koblingshuller udformet nabokomponent, fig. 2 i større målestok et aksialt snit gennem en koblingstap på den i fig. 1 viste elektromagnet, fig. 3 et snit efter linien III-III i fig. 2, 20 fig· 4 et tværsnit af en anden komponent, der er udformet som en til elektrobyggesættet hørende kommutator, som er monteret ko-aksialt med et polhjul, fig. 5 i større målestok et udsnit af den i fig. 4 25 viste komponent med en i aksial retning for løbende not, hvori der er indsat en kontaktfjeder uden tilslutning til elektriske ledninger, og 149663 4 fig. 6 samme udsnit som vist i fig. 5, men med to i noten indklemte, ved kontaktfjederen indbyrdes forbundne, uisolerede ledningsender.In the drawing: FIG. 1 is a perspective view of a component of an electrical building kit, in the form of a coupling pin electromagnet adapted for mechanical coupling with a neighboring component designed with coupling holes; FIG. 2 shows, on a larger scale, an axial section through a coupling pin in the embodiment of FIG. 1; FIG. 3 is a sectional view taken along line III-III of FIG. 2, 20 FIG. 4 is a cross-sectional view of another component formed as a commutator associated with the electrical kit, which is co-axially mounted with a pole wheel; FIG. 5 is an enlarged view of the section of FIG. Fig. 4 25 shows an axial direction for a continuous groove in which a contact spring is inserted without connection to electrical wires, and Figs. 6 shows the same section as shown in FIG. 5, but with two in the groove, interconnected, uninsulated wire ends interconnected by the contact spring.
Den i fig. 1 viste komponent består af en elektromag-5 net 1 med to som koblingstappe udformede stikben 2a og 2b til mekanisk sammenkobling med en skematisk vist nabokomponent 8, som har koblingshuller 9a og 9b til . indføring af stikbenene 2a og 2b. Enderne af disse er opslidset, som vist ved 3a og 3b, for at muliggøre en 10 ringe elastisk deformation af stikbenene under sammen-koblingen med komponenten 8. Elektromagneten 1 har en på en jernkerne mellem to endeplader 4 og 5 opviklet magnetvikling 6, hvis ender på den nedenfor nærmere forklarede måde er tilsluttet en kontaktfjeder i hver af 15 ' stikbenene 2a og 2b. Ved den modsatte ende af disse har elektromagneten en polsko 7.The FIG. 1, an electromagnet 5 consists of two connector pins 2a and 2b for mechanical connection with a schematically shown neighboring component 8 having coupling holes 9a and 9b. inserting the pins 2a and 2b. The ends of these are slotted, as shown at 3a and 3b, to allow a small elastic deformation of the pins during coupling with the component 8. The electromagnet 1 has a magnetic winding 6 wound on an iron core between two end plates 4 and 5 in the manner explained below, a contact spring is connected in each of the 15 'connector pins 2a and 2b. At the opposite end of these, the electromagnet has a pole shoe 7.
I fig. 2 er der vist den ene af koblingstappene (stikbenene), som her er betegnet med 20. Den er udformet med et hulrum 21 med rektangulær tværsnitsform, i hvis 20 hjørner der, som vist i fig. 2 og 3, er dannet støtteribber 22 for en i hulrummet indsat kontaktfjeder 10.In FIG. 2, one of the coupling pins (connector pins) designated here is shown 20. It is formed with a cavity 21 of rectangular cross-sectional shape, in which 20 corners there, as shown in FIG. 2 and 3, support ribs 22 are formed for a contact spring 10 inserted in the cavity.
Denne består af en om en længdeakse symmetrisk og således udformet metalstrimmel, at der ved dens ene ende dannes et i det væsentlige pilespidsformet hoved 10a, 25 og at der ved dens anden ende dannes udadvendende og i forhold til et retlinet midterparti 10b skråtstillede modhager 10c, som tjener til fastholdelse af kontaktfjederen 10 indvendig i hulrummet 21.This consists of a longitudinal axis symmetrical and so formed of metal strip that at its one end is formed a substantially arrowhead shaped head 10a, 25 and that at its other end is formed outwardly and in relation to a rectilinear central portion 10b inclined barbs 10c, which serves to hold the contact spring 10 inside the cavity 21.
Som vist i fig. 3, ligger kontaktfjederen ved begge 30 sider af dens pilespidsformede hoved 10a an mod støtteribberne 22, så at der mellem kontaktfjederen og to af hulrummets 21 indvendige sidevægge dannes en snæver spalte 23 til indføring og fastklemning af uisolerede ledningsender 11 og 12, hvorved der gennem kon- 5 143683 taktfjederen dannes elektrisk forbindelse mellem disse.As shown in FIG. 3, the contact spring rests on both 30 sides of its arrowhead shaped head 10a against the support ribs 22, so that a narrow slot 23 is formed between the contact spring and two of the interior side walls of the cavity 21 for insertion and clamping of uninsulated conduit ends 11 and 12 - 5 143683 the stroke spring forms an electrical connection between these.
De skråtstillede dele af kontaktfjederens pilespidsformede hoved medvirker til at lette indføringen af ledningsenderne 11 og 12 i spalterne 23.The inclined portions of the arrowhead shaped arrowhead of the contact spring facilitate the insertion of the lead ends 11 and 12 into the slots 23.
5 For yderligere at stabilisere kontaktf jede.ren 10 indvendig i hulrummet 21 er der i dettes bund 24 anbragt en støttetap 25, som ved kontaktfjederens montage indføres i mellemrummet mellem dennes retlinede dele 10b.5 In order to further stabilize the contact spring 10 inside the cavity 21, a support pin 25 is provided in its bottom 24 which, when the contact spring is mounted, is inserted into the space between its rectilinear parts 10b.
Tappen 25 bør have en diameter, som er lidt større end 10 afstanden mellem de indvendige sideflader af kontaktfjederens retlinede dele 10b, så at kontaktfjederen ved indsætning i hulrummet 21 udspiles så meget, at enderne af dens modhager 10c trykkes ind mod hulrummets inderside.The pin 25 should have a diameter slightly greater than 10 the distance between the inner side faces of the rectilinear portions 10b of the contact spring so that, when inserted into the cavity 21, the contact spring is played out so much that the ends of its barbs 10c are pressed into the interior of the cavity.
15 For at muliggøre tilslutning af enderne af magnetspolen 6, fig. 1, til kontaktfjederen 10 er der i bunden 24 af hulrummet 21 dannet en snæver kanal 26, som udmunder i umiddelbar nærhed af tappen 25, så at den ene uisolerede ende 13 af magnetviklingen 6, som normalt 20 består af meget tynd tråd, kan føres op gennem kanalen 26 og indklemmes mellem kontaktfjederens retlinede del og overfladen af tappen 25. På tilsvarende måde indklemmes den anden ende af magnetviklingen .i det andet af elektromagnetens stikben. I praksis er det af væ-25 sentlig betydning, at magnetviklingens ender tilsluttes kontaktfjederen på denne måde, da man herved undgår, at de meget tynde ledningsender kan beskadiges ved forbindelsen med kontaktfjederen.15 To enable connection of the ends of the magnetic coil 6, FIG. 1, for the contact spring 10, a narrow channel 26 is formed in the bottom 24 of the cavity 21, which opens in the immediate vicinity of the pin 25, so that one uninsulated end 13 of the magnetic winding 6, which usually 20 consists of very thin wire, can be guided. up through channel 26 and squeezed between the rectilinear portion of the contact spring and the surface of the pin 25. Similarly, the other end of the magnetic winding is squeezed into the other of the electromagnet pin. In practice, it is essential that the ends of the magnetic winding be connected to the contact spring in this way, thereby avoiding that the very thin wire ends can be damaged by the connection with the contact spring.
I fig. 4 er der vist et andet eksempel på anvendelsen 30 af den i fig. 2 viste kontaktfjeder til dannelse af en selvlåsende ledningsklemme i en til et elektrobyggesæt hørende komponent. Komponenten består her af et som en kommutator udformet cylinderlegeme 30, som er fremstillet ved støbning i plast og belagt med fire cirkel- 149863 6 bueformede, indbyrdes isolerede metallameller 32, der ved enderne er udformet med flige, som er indklemt i spalter 31. I kommutatorens 30 overflade er der umiddelbart under hver lamel 32 udsparet noter, som danner 5 hulrum 21 til anbringelse af kontaktfjedre på den ovenfor beskrevne måde.In FIG. 4, another example of the use 30 of the embodiment of FIG. 2 to form a self-locking conduit in a component of an electrical building kit. Here, the component consists of a cylinder body 30 formed by commutator molding made of plastic and coated with four circular arcuate, mutually insulated metal slats 32 formed at the ends with tabs clamped in slots 31. I The surface of the commutator 30 has grooves cut out immediately below each slat 32 which form 5 cavities 21 for applying contact springs in the manner described above.
Disse to kontaktfjedre er for overskuelighedens skyld udeladt i fig. 4, men er i fig. 5 og 6 vist i større målestok. Fig. 5 viser kontaktfjederen 10 i udspilet 10 stilling inden ledningstilslutningen, og det vil ses, at dens hoved her ligger an mod indersiden af lamellen 32 og bunden af noten 21.For the sake of clarity, these two contact springs are omitted in FIG. 4 but in FIG. 5 and 6 shown on a larger scale. FIG. 5 shows the contact spring 10 in the cut-out position 10 before the conduit connection, and it will be seen that its head here abuts the inside of the slat 32 and the bottom of the groove 21.
Når ledningsenderne 11 og 12 indklemmes på hver side af kontaktfjederen 10, som ovenfor beskrevet under 15 henvisning til fig. 2 og 3» bliver kontaktfjederen sammenklemt, som vist i fig. 6, og ledningsenderne 11 og 12 bliver da gennem kontaktfjederen 10 forbundet indbyrdes og med lamellen 32.When the cable ends 11 and 12 are clamped on each side of the contact spring 10, as described above with reference to FIG. 2 and 3, the contact spring is clamped as shown in FIG. 6, and the wire ends 11 and 12 are then connected to each other through the contact spring 10 and to the slat 32.
I fig. 4 er det vist, hvorledes disse kontaktslutnings-20 organer 10,21 kan anvendes til dannelse af strømkredse 32, 11, 2b, 2a, 12, 32, som forbinder magnetviklingerne i fire elektromagneter 1 gennem stikben 2a og 2b med kommutatorlamellerne 32. Elektromagneterne 1 er her monteret på et til elektrobyggesættet hørende polhjul 25 33, som er monteret ko-aksialt med kommutatoren 30 på en fælles aksel 34.In FIG. 4, it is shown how these contact closure means 10,21 can be used to form circuits 32, 11, 2b, 2a, 12, 32 which connect the magnetic windings of four electromagnets 1 through pins 2a and 2b to the commutator slats 32. Electromagnets 1 is mounted here on a pole wheel 33 33 of the electrical building kit, which is mounted co-axially with the commutator 30 on a common shaft 34.
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK386681A DK149663C (en) | 1981-09-01 | 1981-09-01 | CONTACT CONNECTOR, SPECIFICALLY FOR BUILT IN COMPONENTS FOR A BUILDING SET FOR BUILDING THE ELECTRIC CIRCUIT |
| DE3230934A DE3230934A1 (en) | 1981-09-01 | 1982-08-20 | Contact device, especially for installation in components of a kit for producing electrical circuits |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK386681A DK149663C (en) | 1981-09-01 | 1981-09-01 | CONTACT CONNECTOR, SPECIFICALLY FOR BUILT IN COMPONENTS FOR A BUILDING SET FOR BUILDING THE ELECTRIC CIRCUIT |
| DK386681 | 1981-09-01 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK386681A DK386681A (en) | 1983-03-02 |
| DK149663B true DK149663B (en) | 1986-09-01 |
| DK149663C DK149663C (en) | 1987-05-11 |
Family
ID=8127622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK386681A DK149663C (en) | 1981-09-01 | 1981-09-01 | CONTACT CONNECTOR, SPECIFICALLY FOR BUILT IN COMPONENTS FOR A BUILDING SET FOR BUILDING THE ELECTRIC CIRCUIT |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3230934A1 (en) |
| DK (1) | DK149663C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243380A (en) * | 2020-01-16 | 2020-06-05 | 遵义职业技术学院 | Teaching aid display device for mathematics education |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2128818B (en) * | 1982-10-11 | 1986-02-12 | Johnson Electric Ind Mfg | An armature |
| DE19702373B4 (en) * | 1997-01-23 | 2008-02-21 | The Whitaker Corp., Wilmington | Electrical connector with a short-circuit spring and short-circuit spring |
| GB2423422B (en) * | 2004-02-21 | 2007-01-03 | Hitesh Dhanji Patel | Electrical connections and connectors |
| US8882539B2 (en) * | 2013-03-14 | 2014-11-11 | Amphenol Corporation | Shunt for electrical connector |
| CN110917637A (en) * | 2019-11-28 | 2020-03-27 | 武汉亿童文教股份有限公司 | Combined pipeline toy supporting assembly |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2349306C3 (en) * | 1973-10-01 | 1981-06-11 | Siemens AG, 1000 Berlin und 8000 München | Connection device for an electrical component, e.g. for a choke coil |
| DE7420412U (en) * | 1974-06-14 | 1974-11-28 | Wago Kontakttechnik Gmbh | Screwless terminal or connector for electrical lines |
-
1981
- 1981-09-01 DK DK386681A patent/DK149663C/en not_active IP Right Cessation
-
1982
- 1982-08-20 DE DE3230934A patent/DE3230934A1/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243380A (en) * | 2020-01-16 | 2020-06-05 | 遵义职业技术学院 | Teaching aid display device for mathematics education |
| CN111243380B (en) * | 2020-01-16 | 2021-09-28 | 遵义职业技术学院 | Teaching aid display device for mathematics education |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3230934A1 (en) | 1983-03-17 |
| DK386681A (en) | 1983-03-02 |
| DE3230934C2 (en) | 1991-08-14 |
| DK149663C (en) | 1987-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |