DE1877352U - IN A VERSION WITH A SIGNIFICANTLY CIRCULAR CROSS-SECTION, INTERMEDIATE SOCKET USED AS A BASE TO ACCEPT FLASH BULBS WITH A FLAT BASE. - Google Patents

Description

PJU14 980-28. G

■ Zeiss Ikon AG. Stuttgart, July 22nd, 1960 "~

to Pa.721

"Intermediate socket that can be used as a base in a fitting with an essentially circular cross-section for holding flash lamps with a flat base "

The invention relates to an intermediate socket which is intended to provide a flashing light socket which is an im has a substantially circular cross-section and, for example, to accommodate flash lamps with a cross-section approximately The circular metal or glass base is used to make it usable for the use of Flaeh base lamps.

There are already known intermediate sockets for flat base lamps that can be used in flashing light sockets, which are provided with two diametrically opposite side contacts to accommodate glass base lamps. With these Intermediate mounts provide two laterally arranged leaf springs, which grip the flat base like pliers electrical connection between the side contacts of the Lamp socket and the side contacts of the flat base of the flash lamp to be used. The well-known intermediate mounts have their own spring-loaded ejector provided, which can be triggered by one of the two leaf springs used for holding and contacting. Training the known intermediate mounts is relatively expensive due to the built-in ejector3. Next to it will with this version the release of the ejector with the help

one of the laterally extended leaf springs is still hot after being burned out due to its location in the immediate vicinity Flash lamp very difficult. Also due to the alternative arrangement of the leaf spring concerned between the reflector the intermediate socket and the strobe light will trigger the ejector due to the relatively difficult to access Position of the release element is not made much easier.

In contrast, the object of the invention is to produce an intermediate version from a few, simple components which as much as possible with the functional parts of the relevant Luminaire socket interact. The intermediate version should be different by slightly changing its components Flash lamp sockets can be adapted. These demands for simple and far-reaching training The intermediate socket according to the invention for flash lamps is also adapted to existing flashing light sockets flat base in that in the socket body one of the at least one-pole connection between the contacts the lamp socket, which is approximately circular in cross section, and the contacts of the flat lamp base, preferably Cross-shaped contact piece is guided axially displaceably.

The parallel longitudinal sides of the legs of the cross-shaped contact piece are preferably used for guidance, whereby tilting of the same within the socket body is avoided. The contact piece itself is off made electrically non-conductive material and has one or more contact strips for the current transfer

from the contacts of the flashing light socket to the contacts of the flat cap lamp. According to the training of the person concerned Lamp holder, in which the intermediate holder can be used as a base, are on the one hand through eccentrically arranged contact lugs for touching the flat base contacts, closed contact strips, on the other hand either with a laterally arranged contact nose for touching a side contact or with a concentric one arranged contact nose for touching the center contact of such a lamp socket.

The contact piece is also provided for ejecting the flat base lamp located in the intermediate socket. which is fixed by two in the fitting body, resting against the parallel surfaces of the flat base and is held in constrictions of the same penetrating, non-conductive spring legs. The contact piece forms the extension of the ejector already present in the strobe light, which is resiliently against the back of the Contact piece applies and strives to move this in the direction of the flash lamp.

Further details of the invention are explained below in some exemplary embodiments with reference to the drawing.

Show it:

1 shows a longitudinal section along the line A-B of FIG. 2 through the in a lamp socket Middle contact inserted intermediate socket,

Fig. 2 shows a cross section through the intermediate socket according to the line C-D of Fig. 1,

-A-

Pig. 3 shows a plan view of the intermediate socket according to Pig. 1 and 2,

Pig. 4 one for use in a lamp socket with side contacts certain intermediate version in the view and

Pig. 5 shows a section through the fit according to Pig. 3 after the line E-P.

The ones in the Pign. 1, 2 and 3 shown intermediate socket is in a flashlight socket for receiving flash lamps with Middle contact can be used. The intermediate socket essentially consists of the fitting body 1 with the resilient neck

in the middle 2 for the flat base 3 of the flash lamp 4 and the / fitting body axially guided contact piece 5. The contact piece 5 made of electrically non-conductive material is Cross-shaped in cross-section. It is with the parallel long sides a and b of its legs 51 Ms 54 guided in a correspondingly shaped vertical recess 6 of the fitting body 1, whereby also with relatively low height of the Pührungsflächen a tilting of the contact piece is avoided with certainty.

The Peder legs 2 of the intermediate mount, which are also guided in the recess 6 of the fitting body 1, are considerably widened at their ends 8 facing one another, which rest against the parallel side surfaces of the flat base 3 under elastic pressure and thereby penetrate its constrictions 9 (Pig. 3) . You thereby ensure a secure retention of the with their flat base 3 in a

this adapted opening 10 of the socket body immersed Flash lamp 4. To facilitate the introduction of the flash lamp 4 into the intermediate socket, the opening 10 is at the top enlarged by a beveled edge 11. The opening 10 is in the area of the widened ends 8 of the spring legs 2 expanded on both sides. -These extensions 12 of the opening 10 allow an elastic receding of the broad spring ends 8 when inserting a flat base flash lamp into the Interim version. In addition, the extensions 14, which extend obliquely upward, also serve for the vertical recess 6 in the socket body 1 of the spring back of the spring legs 2.

On the contact piece 5 is an eccentrically arranged contact strip made of electrically conductive material. This contact strip 15, the leg 51 of the Kontaktstükkes surrounds, touches with its upwardly protruding nose 16 the one indicated in Fig. 1 and 3 contact 17 of the in the Opening 10 inserted flat base 3. The downwardly protruding nose 19 of the contact strip 15 extends 3ich in the direction to the central axis of the socket body 1 and comes with the inserted intermediate socket with the central contact 20 of the Flashing light socket 21 in contact. The center contact 20 arranged on the ejector 22 of the socket 21 makes the Contact piece 5 pressed under elastic pressure against the contact 17 of the flat base 3, whereby the electrical connection is made between the center contact 20 of the socket 21 and the contact 17 of the flash lamp 4. Sin sliding out of the Flat base 3 from the opening 10 of the intermediate socket but through the two penetrate into its constrictions 9

lowing spring legs 2, 8 prevented.

To establish the electrical connection from the side contact 25 of the lamp socket 21 to the second contact 18 of the flat cap lamp 4 is a contact strip arranged on the circumference of the socket body 1 in a manner known per se 23 is provided, which with its inwardly extending resilient junction 24 on the second connection contact 18 the flat base lamp rests elastically.

The removal of the burnt-out flash lamp 4 from the intermediate socket 5 takes place with the aid of the ejector 22 of the flashing light in question, which is assigned to the socket 21. By pushing in of the ejector 22 into the rear opening 13 of the socket body 1, the contact piece 5 is pushed against the base 3 of the flash lamp 4 and this overcoming the The contact pressure of the leg legs 2 is pushed out of the opening 10 of the socket body 1. So when ejecting the Flash lamp 4 not also the intermediate socket from the socket the strobe light slides out, the socket body 1 is for example with the help of a bayonet lock, not shown fastened in the flashing light socket 21 and thus secured against unintentional axial movements.

The FIGS. 4 and 5 show another embodiment of the intermediate socket provided for receiving flat cap lamps. The intermediate socket shown here is in flashing light sockets 31 with laterally arranged contacts 32 can be used. For this purpose, the socket body 1 of this intermediate socket is also attached to the parallel longitudinal sides

-. 7 -

th a and b of its legs 51 to 54 guided contact piece 5 with two eccentrically arranged contact strips 36 and 37 provided. These contact strips come when inserted Intermediate version with their from lateral cutouts 38 of the fitting body 1 protruding resilient lugs 39 with the Side contacts 32 of the lamp socket 31 in contact · The rest of the design of the intermediate socket is the same as that of in FIGS. 1 to 3 version shown. There are only here both with the side contacts 32 of the lamp socket 31 coming into contact contact strips 36, 37 with after upwardly directed contact lugs 33 are provided, which again against the connection contacts facing them, indicated in FIG. 3 17, 18 of the flat base lamp inserted into the intermediate socket under the elastic pressure of the spring-loaded, however, do not apply electrically conductive ejector 22 here. The burned-out flash lamp is removed again by pressing in the flash lamp socket 31 here associated ejector 22, the lamp cap being overcome in the manner described above with the aid of the contact piece 5 of the contact pressure of the spring leg 2 is pushed out of the socket body 1.

It is within the scope of the invention, including in a flashing light socket with center contact as a base insertable intermediate socket both contact strips to connect the To arrange contacts of the flashing light socket with the contacts of the flat base lamp on the contact piece 5, the center contact contact strips touching the lamp holder

15 corresponds to the formation of the contact strip / (Fig. 1),

while the second contact strip according to the design of

4 and 5, the intermediate socket shown in FIGS therefore comes into contact with the side contact of the lamp socket when the intermediate socket is inserted.

Claims (8)

- 9 claims 1. In a socket with a substantially circular cross-section Intermediate socket which can be used as a base for receiving flash lamps with a flat base, characterized in that in the socket body (1) one of the at least single-pole connections between the contacts of the approximately circular cross-section Lamp holder and the contacts of the flat lamp base, preferably cross-shaped Contact piece (5) is guided axially displaceably. 2. Intermediate socket according to claim 1, characterized in that that the cross-shaped contact piece (5) with the parallel longitudinal sides (a, b) of its legs (51 to 54) in the socket body (1) is performed. 3. Intermediate socket according to claim 1 or 2, characterized in that that the contact piece (5) is formed from electrically non-conductive material and one or more, preferably contact strips attached to its legs (51 to 54) for carrying current from the contacts of the flashing light socket to the contacts of the flat lamp cap. 4. intermediate socket according to claim 3, characterized in that the contact piece (5) has a contact strip (15) with a the center contact (20) of a lamp holder (21) touching contact nose (19) and one off-center Contact (17) of the flat base (3) of the flash lamp (4) touching contact nose (16), a second Contact strips (23) for connecting the side contact (25) - 10 - the luminaire bevel (29) with the second contact (18) of the Flat base is preferably arranged on the socket body. 5. Intermediate socket according to claim 3, characterized in that the contact piece (5) has two eccentrically arranged, on the one hand the contacts (17, 18) of the flat base (3) touching contact strips (36, 37), which on the other hand with lateral Cutouts (38) of the socket body (1) penetrating contact lugs (39) on the side contacts (32) of a lamp socket (31) are in contact. 6. Intermediate version according to at least one of the preceding claims, characterized in that the contact piece (5) acts as an ejector for the flat base lamp inserted in the socket body (1) (4) is used and with the ejector (22) of the lamp holder, possibly forming the center contact (20) (21 or 31) interacts. 7. intermediate socket according to at least one of the preceding claims, characterized in that for holding the Flat base lamp (4) two elastically resting against the flat sides of the base (3) and in its constrictions (9) penetrating, non-current carrying spring legs (2, 8) are arranged in the socket body (1). 8. Interim version according to at least one of the preceding Claims, characterized in that the socket body (1) preferably using one known per se Bayonet lock in the flashing light socket (21 or 31) is fixed immovably.