EP0342334A2 - Douille - Google Patents

Douille Download PDF

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Publication number
EP0342334A2
EP0342334A2 EP89105189A EP89105189A EP0342334A2 EP 0342334 A2 EP0342334 A2 EP 0342334A2 EP 89105189 A EP89105189 A EP 89105189A EP 89105189 A EP89105189 A EP 89105189A EP 0342334 A2 EP0342334 A2 EP 0342334A2
Authority
EP
European Patent Office
Prior art keywords
wire spring
base
incandescent lamp
base contacts
contact
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.)
Withdrawn
Application number
EP89105189A
Other languages
German (de)
English (en)
Other versions
EP0342334A3 (fr
Inventor
Klaus Mohsakowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0342334A2 publication Critical patent/EP0342334A2/fr
Publication of EP0342334A3 publication Critical patent/EP0342334A3/fr
Withdrawn legal-status Critical Current

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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
    • H01R33/975—Holders with resilient means for protecting apparatus against vibrations or shocks

Definitions

  • the invention relates to a socket with an incandescent lamp (in particular an H2 incandescent lamp) which has two wing-like base contacts running in one plane and lying opposite one another, with the features:
  • the socket has a base plate which can be inserted into a vehicle headlight or light, -
  • Two electrically conductive and mutually insulated flat contact plates are attached to the base plate, to which the wing-like base contacts are pressed by a wire spring, projections of the contact plates which engage in recesses in the base contacts serve to fix the incandescent lamp
  • the wire spring is rotatably supported at one end in the base plate and is hooked into a contact plate at the other end
  • the wire spring has a bent section between the two locked ends, with which it rests under tension between the wing-like base contacts on the incandescent lamp.
  • the socket essentially consists of a rectangular base plate (1 '), two contact plates (2') and (3 ') attached to one side of the base plate (1'), which extend approximately parallel to one another in their longitudinal extent, and one the incandescent lamp (6 ) (see Figure 1) in the socket locking wire spring (13 ').
  • the contact plates (2 ') and (3') each have approximately in the middle Projection (4 ') or (5').
  • the projection (4 ') is formed by a pin which is fixed in a bore of the contact plate (2') by riveting, while the projection (5 ') is formed by a tongue pointing counter to the direction of insertion of the incandescent lamp.
  • the pin (4 ') and the tongue (5') each engage in a recess (7 ') and (8') of the base contacts (9 ') and (10') of the incandescent lamp (6).
  • the base contacts (9 ') and (10') are arranged wing-like to each other and run in one plane.
  • the pinched foot (11) of the glass bulb (12) of the incandescent lamp (6) is arranged between the base contacts.
  • the foot (11) of the incandescent lamp (6) is covered on the narrow longitudinal sides facing away from the base contacts (9 ') and (10') consisting of double sheet metal.
  • the base plate (1 ') is made of insulating material and inserted from the back of the reflector (12') into its opening at the apex.
  • the leg (15 ') is seen in the direction of light exit wavy and resiliently rests with the tip of a wave crest on the foot (11) of the glass bulb of the incandescent lamp and presses the base contacts (9') and (10 ') against the contact plates (2' ) or (3 ′).
  • a shaped wire spring (13 ') its compressive force on the foot (11) of the glass bulb (12) is not so great that a vibration-free or wobble-free tight fit of the light bulb (6) in the socket during driving is guaranteed.
  • the pressure force generated by the wire spring z.
  • the hooking or unlocking the wire spring by hand would be very cumbersome and time-consuming because of the excessive spring force in the relatively small version. With such a high spring force, there is also a risk of injury. Furthermore, it is possible with such a version that because of the insufficient spring stiffness in the direction of its compressive force and because of the shape of the wire spring, the incandescent lamp can be used incorrectly, ie the wire spring can also be hooked in if the projections (4 ') and ( 5 ') of the contact plates (2') or (3 ') do not engage in the recesses (7') or (8 ') of the base contacts (9') and (10 ').
  • the filament of the incandescent lamp (6) is then strongly defocused, so that, for. B. with headlights not only the oncoming traffic can be dazzled, but also the road is very poorly lit. Furthermore, it has a very disadvantageous effect in such a version for the tight fit of the incandescent lamp in the version that the pressure point between the wire spring and the base of the glass bulb is relatively far from the center of the wing-like base contacts. A slight contact pressure perpendicular to the contact surfaces of the contact plates against the free end of the glass bulb is sufficient to tilt the incandescent lamp around the upper or lower edge of the wing-like base contacts.
  • the object of the invention is to design the version described in the generic term such that even with a sufficiently large compressive force of the wire spring against the light bulb, the hooking or unlocking of the wire spring can still be done manually.
  • the wire spring when the wire spring is pressed against the incandescent lamp, it should be clearly noticeable if the incandescent lamp is incorrectly inserted into the socket, ie if the protrusions of the contact plates used to fix the incandescent lamp are not in the recesses in the Engage base contacts.
  • the wire spring is approximately Z-shaped when viewed perpendicular to the plane of the base contacts, - the form of Z-passes the two free legs of the connecting middle web approximately in the direction of the bulb center axis and at an acute to the base plate toward the opening angle which may o be almost 0, to the plane of the socket contacts, -
  • the web in the relaxed state of the wire spring is at a greater acute angle to the level of the base contacts than when the wire spring is hooked in.
  • the wire spring presses against the incandescent lamp with a relatively large force, since the leg of the Z-shape adjacent to the base plate is not only subjected to bending but also to torsion. These stresses are particularly high and thus the pressure force of the wire spring acting on the incandescent lamp if the middle web and the free leg hooked into the contact plate are relatively short and are therefore not visibly bent when the wire spring is hooked on. An incandescent lamp inserted incorrectly into the socket is clearly noticed, since then the pressure for hooking in by hand is very high.
  • the pressure point between the wire spring and the incandescent lamp lies approximately in a plane perpendicular to the light exit direction and approximately through the center of the wing-like base contacts.
  • the pressure point is optimal both to the upper and to the lower edge of the wing-like base contacts, since the contact pressure against the glass bulb is the same when the bulb is tilted around the upper and lower edge of the wing-like base contacts.
  • the wire spring is bent from its bearing towards the base contact adjacent to the bearing and has a second bend, the bending point of which is at a smaller distance from the base contact adjacent to the bearing than the end face of the projection adjacent to the bending point . It is expedient if the free leg of the Z-shaped wire spring adjacent to the base plate extends from the second bend to the other base contact and has a smaller distance from it than the end face of the projection engaging in a recess of this base contact. It is very certain that the light bulb cannot be inserted incorrectly into the socket.
  • a further advantage is if the latching opening for the wire spring is designed as a slot which is open towards the base plate and the Z-shaped wire spring is given a prestress such that it presses against the bottom of the slot. This enables the wire spring to be hooked in very easily and quickly, since it is pressed with one free leg towards the base plate and to the level of the base contacts and then automatically hooks into the slot because of its pretension. It also locks the spring securely in the slot.
  • the end face of the projection adjacent to the slot has a greater distance from the plane of the base contacts than the face of the slot pointing in the direction of insertion of the incandescent lamp and serving as a contact surface for the wire spring. This makes it difficult, or if the projection is only a relatively small distance from the slot, not to be able to hook the wire spring into the slot.
  • the pressure point between the wire spring and the incandescent lamp is linear. At a such a solution, the light bulb is even less sensitive to a tilting movement around the upper and lower edge of the wing-like base contacts.
  • the socket consists of a base plate (1) made of insulating material, two flat contact plates (2) and (3) attached to one side of the base plate (1), which extend approximately parallel to each other in their longitudinal extent, and a wire spring (13), which the Incandescent lamp (6) in the socket.
  • the wire spring (13) is rotatably mounted in the vicinity of the contact plate (2) in a bore (18) running in the direction of the central axis of the incandescent lamp.
  • the section (19) of the wire spring (13) mounted in this bore has a bend (20) with which it engages behind a step of the bore in a self-locking manner. From the bore (18), the wire spring (13) changes into its Z-shaped course.
  • the leg (21) of the wire spring (13) is bent from the bore (18) in the direction of the base contact (9) of the incandescent lamp (6) or the contact plate (12) and has a second bend, from the bending point ( 22) up to the central web (23) of the legs (21) has a smaller distance from the plane of the base contacts than the end faces of the projections (4) and (5) of the contact plates (2) and (3).
  • the free leg (23) of the wire spring (13) is bent into an eyelet and hooked into a slot of an angled portion (25) of the contact plate (3) that opens towards the base plate (1).
  • the projection (4) consists of a pin, which is fixed in a bore of the contact plate (2) by riveting, while the projection (5) is formed from a tongue punched out of the contact plate (3) and bent against the direction of insertion of the incandescent lamp (6).
  • the contact surfaces (2) and (3) have raised warts (26), the surface of which serves as a contact surface for the base contacts (9) and (10) of the incandescent lamp.
  • the leg (27) of the wire spring (13) is bent from the slot (24) to the foot (11) of the glass bulb (12) of the incandescent lamp.
  • the middle web (23) adjoins the leg (27) under prestress on the foot (11) of the glass bulb (12) of the incandescent lamp.
  • the middle web runs with a hooked-in wire spring at an acute angle ( ⁇ ) towards the base plate (1) to the level of the base contacts (9) and (10).
  • this acute angle increases, which is designated with ( ⁇ ) in the drawing.
  • the wire spring also bears against the base of the slot (24) after it is hooked in (see FIG. 4).
  • the wire spring is hooked in, it is pressed both in the direction of the base plate and in the direction of the plane of the base contacts.
  • the shape of the wire spring changes very little in the area of the web (23) and the free leg (27), since in this area it is stiffer than the relatively long one because of the relatively short leg (27) and web (23) executed legs (21).
  • the leg (21) is longer than the leg (27) because the distance between the pressure point (28) and the slot (24) is as small as possible.
  • Such a socket is also very advantageous because of the Z-shaped wire spring, because no short circuit can occur between the base contacts (9) and (10) at the points (29) at which the base contacts enclose the foot (11) in the manner of pliers . B. with a wire spring, which extends over these points (29), which have very large tolerances in their thickness.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP19890105189 1988-05-19 1989-03-23 Douille Withdrawn EP0342334A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883817087 DE3817087A1 (de) 1988-05-19 1988-05-19 Lampenfassung
DE3817087 1988-05-19

Publications (2)

Publication Number Publication Date
EP0342334A2 true EP0342334A2 (fr) 1989-11-23
EP0342334A3 EP0342334A3 (fr) 1990-10-10

Family

ID=6354714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890105189 Withdrawn EP0342334A3 (fr) 1988-05-19 1989-03-23 Douille

Country Status (2)

Country Link
EP (1) EP0342334A3 (fr)
DE (1) DE3817087A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739229A1 (fr) * 1995-09-21 1997-03-28 Const Electromecaniques Cemm T Porte-lampe a double verrouillage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3432445A1 (de) * 1984-09-04 1986-03-13 Robert Bosch Gmbh, 7000 Stuttgart Scheinwerfer fuer kraftfahrzeuge
FR2614140B1 (fr) * 1987-04-16 1989-07-21 Cibie Projecteurs Lampe et porte-lampe pour projecteur de vehicule automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739229A1 (fr) * 1995-09-21 1997-03-28 Const Electromecaniques Cemm T Porte-lampe a double verrouillage

Also Published As

Publication number Publication date
EP0342334A3 (fr) 1990-10-10
DE3817087A1 (de) 1989-11-30
DE3817087C2 (fr) 1990-03-08

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