DE2046922A1 - Lamp base - Google Patents

Description

Patent attorney

Dipl. Phys. Leo T h u 1

Stuttgart

J.P. Burgess - M.W. Polking horn

DEUTSCHE ITT INDUSTRIES GmbH, Freiburg

Lamp base

The invention relates to a lamp base for mounting in openings in thin-walled housings.

The previous lamp bases are complicated and expensive to manufacture. Also caused in the previous bases the attachment of the connection cables high costs and errors occurred due to incorrect attachment during the base assembly

The lamp bases were also difficult to install and orient into their position of use, causing errors in the lighting system in which these bases were installed.

The object of the invention is to create a lamp base which is safe and testable in use and which is simple and inexpensive to manufacture and assemble. In addition, the lamp base should be protected from dirt regardless of the wall thickness of the housing in which it is installed and the internal contacts. According to the invention, this is achieved by a lamp base with the following combination features:
a) a unit housing that has a recess at one end

September 23, 1970 Wr / Wa ./.

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for holding a lamp, a base for holding Connection plugs at the other end and a recess for Receipt of contact pieces between the recess for receiving a lamp and the base, wherein the Recess for receiving the contact pieces is in the open transition with the recess for receiving a lamp and the base and

at least one contact piece in snap engagement in the recess for receiving contact pieces, wherein the Contact piece simultaneously with the lamp inserted into a recess and a connector in the intended Base makes contact.

It is provided that the contact pieces are bent at one end and are in contact with the lamp Part are provided and at the other end a leaf spring-like and located with the connector in contact Have extension.

In one embodiment of the invention, the recesses for receiving the contact pieces have a projection Snapping and holding the inserted contact pieces on. Likewise is the base for receiving the connector provided with an inner shoulder and behind this shoulder for snapping in and holding the connector engages a resilient tongue of the connector.

In addition, the case has outstanding towers for the Connector on which are surrounded by a protective collar and is with a sealing unit on the Towers provided, and in the seal are openings for the Connector available.

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Advantageously, the sealing unit consists of a plurality of individual seals, each one Seal covers a tower and each seal has an opening for a connector.

In a further embodiment of the invention is on the housing an annular splash with a circumferential lip-shaped extension to which an annular Link, a pressure ring, rests, attached. In addition, shoulders are on the housing at a distance from the plan view as a stop in.der height of the recess for the lamp attached. Included one of the shoulders has a locking projection which points in the direction of the flange and which is inserted into a corresponding one Breakthrough engages in the housing receiving the lamp base.

Furthermore, an elastic ring-shaped member, a pressure ring, is mounted on the panel, which is the wall of a Installation housing presses against the shoulders.

It is also advantageous that the unit housing is divided into an upper housing part and a lower housing part, the upper housing part serving as a stop shoulders and the recesses for a lamp and the The lower part of the housing has a large number of guide and retaining pins, the recesses for the contacts with their seals and an annular splash near the Shoulders. A tower for receiving a light guide is attached to the upper part of the housing, which automatically aligned with the filament of the installed lamp.

The lamp base according to the invention consists of a simple construction and is inexpensive to manufacture, as well as quick and easy to assemble. Another advantage is the always correct installation position of the lamp base.

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Since the lamp base is provided with an internal grounding system, plastic or Metal can be used. In addition, the lamp base is provided with a light guide that is suitable for all focus lengths has and only needs one position.

Further details and advantages can be found in the following description, which is carried out with the aid of a drawing will be removed.

It shows:

1 shows a cross section through an embodiment of the lamp base with a fastening ring, a wire plug connection and an inserted lamp;

Fig. 2 is a rear view of the lamp cap; Fig. 3 is a front view of the lamp cap;

FIG. K shows a cross section through a lamp base with an integral base part; FIG.

5 shows a perspective view of a further lamp base, partially cut;

Figure 6 is an exploded perspective view of the lamp cap of Figure 5;

7 shows a rear perspective view of the lower housing part with the guidance of the wire connector and the waterproof closure;

Fig. 8 three different versions of the lamp base, the adaptation of the lamp base to different Illustrate installation depths;

9 is a bottom view of the upper portion of the lamp cap highlighting the mounting shoulders;

Fig. 10 is a partial cross-section in which a connection in its locked position is drawn;

11 shows a section through the adapter ring;

12 shows a section through the lamp cap in its position of use on a reflector;

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Fig.13 is a bottom view of the lamp base with the

Wire connectors and Pig.14 a section along the line XIV-XIV in Pig.1 ^.

In general, the invention consists of a lamp base with few parts that are easy to manufacture and assemble. Furthermore, the external shape of the lamp base ensures good assembly and verifiable alignment during installation.

The lamp base is also equipped with an elastic ring and a locking device that ensures good cohesion with the wall or the housing, on or in which the installation takes place, secures. The elastic ring in Connection with the shoulders on the lamp base allow the different materials and wall thicknesses for the housing.

The overall construction of the lamp base creates a unit that can be carried out quickly, easily and at no high cost a snap mechanism of all parts can be assembled. In addition, the connections to the exterior electrical system of the vehicle in question can be quickly established.

In Fig. 1, the lamp cap 21 is shown in one of its simplest forms. The lamp base 21 consists of an upper splash member 22 and a main body 2 ^. The main case 2j5 has a recess on one side 24 for receiving a lamp 25 is provided with a bayonet catch base. A recess 26 for receiving and for Holding contacts is incorporated in the central part of the main housing 23. The contacting recess 26 is in open connection with the recess 24 for receiving the lamp 25. Contact pieces 27 are through the recess 24 in its position of use in the recess

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inserted. Each contact element 27 is at one end with an elastic, curved part 28 in contact with the lamp. Furthermore, every contact element is 27 is provided with a bent, leaf spring-like extension 29, which is connected to connectors 3I produces a sliding, rubbing and resilient contact in the lamp base. A lip-shaped projection 30 is formed within the recess 26 in order to retain the contact pieces 27. Above the use of the Contact pieces 27 in the recess 26 is the leaf spring-like extension 29 behind the projection 30 to to prevent accidental removal or removal of the contact pieces 27 from the recess 26.

The connection plugs 3I are accommodated in the lamp base in cavities 32 which were produced in protruding towers 33 at the end of the main housing 23 opposite the recess 2k . The cavities 32 are axially aligned in such a way that the connecting plugs 31 come into frictional contact with the extensions 29 of the contact pieces 27. An inner shoulder 3 ^ is ^{mounted in the cavity 3 2} so that a resilient tongue 35 of the connector can engage behind it. When the connector 3I is fully inserted into the cavity 32, the tongue 35 springs outward and engages behind the shoulder 34, whereby the connector 3 ¹ is secured against being removed from or removed from the lamp base 21.

As shown in Fig. 3, the lamp cap 21 is a common one Contact part 36 attached to receive the lower part of a lamp 25 with a bayonet lock.

The upper flange element 22 is provided with an annular part 37 which is a sealing extension on the circumference 37a, which is intended to bear against a sealing and elastic annular member 38. The ring-shaped

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Link 38 works with the lower part of an annular Shoulder 39 of the splash element 22 together to receive the wall of a reflector therebetween.

The annular splash element 22 is facing forward Shoulders 39 and 4o provided, Fig. 3, in corresponding Recesses in the opening provided for the lamp base 21 in the reflector grip.

As shown in FIG. 1, a waterproof rubber seal 41 is provided, which is connected to the outer wall of the tower 33 in the cavity 32. The seal 41 is provided with an opening 42 through which the connector 31 is inserted into the cavity 32. The opening 42 in the seal is normally closed by a thin membrane which is pierced when the connector 3I is inserted. Furthermore, the opening 42 for receiving the connector plugs expands, creating a weatherproof seal around the connector plug, which prevents dust and / or foreign bodies from entering the lamp base.

It should be noted that the annular flange member 22 is displaced along the longitudinal axis of the main body 33 so that the lamp base can be adapted to the different lengths.

After the flange element 22 is attached to the main housing 23 according to the desired width, is it along lines 43 and / or 44 at selected points attached with ultrasound or heat riveted.

A protective collar 45 is such on the main body 23 attached to include the protruding towers 33. The collar 45 borders the towers 33 and protects Seal 41 against destruction and / or accidental removal from the towers 33

J.P. Burgess-M.W. Polkinghorn

The simplest embodiment of the invention is shown in FIG. The lamp cap in Fig. 4 consists of a one-piece Plastic housing 46 which has an annular flange portion 47 with a circumferential sealing protrusion 47a. The resilient annular member 38 works with the lower side of the annular shoulder together in order to be able to clamp a wall of a reflector in between. Most of the parts of the lamp base are correct Fig. 1 and 4 are identical and are also referred to identically.

Another embodiment of the invention is shown in FIG. A channel 49 for light guides and a connection recess or a channel 5o are introduced into this lamp base in order to avoid any external approach to the electrical To prevent components.

The exploded view in Fig. 6 shows the various parts of the lamp cap according to Fig. 5 · A weatherproof sealing unit 5I is made of individual Seals 52 made with openings 53. Each of the individual seals 52 is cylindrical, around the outer walls of the individual towers 54 of the plug connection cavities. A lower housing part 55 is provided with cavities 56 for receiving contact springs and a Channel 5o provided, which merge openly into the recesses 57 for the plug connections. The lower housing part 55 contains three guide and retaining pins 58, 59 and 60 which engage the upper housing part 61. The lower part of the case 55 carries an annular compressible flange 62 which has a lip-shaped extension 62a on the circumference, on which the annular member 38 rests.

The contact pieces 63 and 64 are shaped to adhere to one end bent parts 65 and 66 for the lamp contacts and at the other end leaf spring-like parts 67 and 68 for which have connection plugs. It should be noted that the

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Contact pieces are designed so that the expiring Press ends 69 and 7o against the central areas of the contact pieces, creating a greater contact pressure the inserted lamp is exercised.

A strip member 71 is provided with a bent part 72 which engages the upper housing part 61. Farther the strip element 71 is equipped with a leaf spring-like extension 73 which is inserted into a connector Jl engages.

The upper housing part 6l is provided with a recess 7 ^ - which accommodates a lamp. Suitable grooves 75 are made in the recess Ik , in which the pins 76 of the inserted lamps are received with a bayonet lock.

Longitudinal shoulders 77 * 78 and 79 are on top Housing part 61 attached. The shoulders 77, 78 and 79 have different strengths and engage in corresponding recesses in the lamp base receiving Reflector on. The alignment or design of the shoulders ensures that the lamp base is only in its correct use position can be used in the reflector. This is a verified and secured Installation of the lamp base in the reflector achieved.

A tower 80 as an optical director is provided on the upper housing part 61, the one on the filament of the lamp aligned light guide.

The perspective representation in Pig. 5 shows the lamp cap with a lamp with a bayonet lock inserted into the recess 74. The lower part of the lamp presses against the bent parts 65 and 66 of the contact pieces

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and 64 in the lamp base. The strip element 71 lies in the Channel 5o. The connectors 31 are in the corresponding Recesses or cavities are shown and they are in contact with the leaf spring-like extensions of the contact pieces and the strip element.

As in the rear view in the Pig. 7, the lower housing part 55 has a plurality of protruding Towers 54. Each of the towers 54 includes one a connector receiving recess 57. The lower housing part 55 is here also with a protective Collar 81 provided, which cooperates with the towers 5 ^. In use, the collar 81 acts as a protective device for the towers 54 and the seals above 52. The presence of the collar 81 on the lower housing part 55 allows the lamp cap to be installed without any mechanical manipulation of the sealing unit 51 or the connector. The worker grips the lower housing part 55 and the outer protective collar 8l so that no damage occurs to the sealing unit or the individual wires during installation can.

Each of the individual seals 52 has a cylindrical one Shape to adapt to the outer walls of the protruding towers 54. As shown in Figs. 6 and 7, hold the individual seals 52 together by ribs 82 to form the common seal unit 51. The sealing unit 51 is a clear one compared to the previous ones The previous seals were installed entirely over the rear part of the lamp base and thus the seal was on the outer walls of the lamp base and could be easily damaged, and then sealing errors occurred. The current

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Sealing unit 51 with the independent seals over any circuit avoids this and the result is that a better, more controllable point seal occurs.

It should also be noted that this type of sealing unit requires less rubber material than the relatively massive seal of the previous type. This results in a cost reduction of the lamp base. The appearance of the sealing unit 51 can be changed as long as it is still Water and dirt from the connection plugs and the lower one Holds housing part.

As shown in FIG. 8, three different models of the lamp base are possible for different widths during installation. While the external configuration of the lower and upper housing parts in the various models vary, the internal elements and dimensions are constant. The relative position of the outer flange 62 and shoulders 77, 78 and 79 on the lamp base changes with each model, so that the lamp base can be adjusted axially to the housing in which it is mounted can. This creates the possibility of achieving various desired widths. That means only that Tools for the outer plastic parts have to be changed, but not the tools for the metal parts.

As shown in a lower view in FIG. 9, the upper housing part is equipped with three longitudinally protruding shoulders 77, 78 and 79. The shoulder 78 is provided with a locking extension 85 at the base which engages in a slot in the housing to hold the lamp base therein. The shoulder 77 is m ^ | _t a retaining stop 84 is provided on the base, which also works together with the housing to ensure that the lamp cap is properly seated

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to be reached in the housing. The shoulder 79 has the channel 49 for the light guide and the tower 80.

As in the partial cross-section in Pig. Io is shown, that lies Strip element 71 in the channel 5o. Passes the housing made of metal, then the strip element 71 has a port setting 85, which extends to the metal housing for grounding.

The applicability of the lamp cap with different wall thicknesses is shown in FIG. The upper part 11 shows the engagement of the lamp cap in a housing 86 with a thin wall. The annular Link 58, the pressure ring, is sufficiently compressed to clamp the housing 86 between the member 38 and the shoulders 77 # 78 and 79 attached to the upper Housing part 6l are attached. As previously described, the member 38 sits on the annular flange 62 of the lower Housing part 55.

The lower part of the view in Fig. 11 shows the lamp cap in a relatively thick wall of a housing 87. The annular member 38, the pressure ring, is more compressed, to compensate for the greater wall thickness. This possibility of automatic adaptation to the various Wall thickness gives the lamp base great versatility. The lamp base can be large Quantities can be produced without going into the different wall thicknesses of the customer's housing.

Furthermore, the use of the ring 38 creates a relative vibration-free assembly with the housing. If the ring 38 when the lamp base engages in the housing actually pressed together, it offers a holding force against the rear part during the entire assembly time of the housing.

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12 shows the lamp cap in a side view and partially in section in its position of use in a housing 87. The locking extension 83 is in his Locking position shown in the breakout in the housing 87. The annular member 58, the pressure ring, is in shown compressed state between the puddle 62 and the housing 87.

The bottom view of the lamp base in Pig. I3 represents the lower housing part 55 is. The base 88 for the Base strips, sockets 89 and 90 for the contact pieces and socket 9I for the light guide take the connector 31 made of wire and these touch in the lamp base the contact pieces, the base strip and the light guide. Also in this figure is the protective collar 81 shown.

14 is a section along the line XIV-XIV in Fig. 13 shows the position of the parts in the lamp cap made clear. The upper housing part 61 is plugged together with the lower housing part 55. Grasp in this position the guide and retaining pins 58, 59 and 60 in the Shoulders 77 «78 and 79 of the upper part of the housing. In this position, the two housing parts are also connected to one another by ultrasonic welding or hot riveting. The contact pieces 64 and 63 (not shown) then engage in the lamp base, as already described. That Strip member 71 is also inserted into its corresponding cavity. The Druokring 38 is then over the annular flange 62 mounted and the lamp base is for connection to a cable pigtail and insert into a Housing finished.

It should be noted that the lamp base is independent of the Cable braid can be manufactured. During manufacture

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of the pigtail, this is at the ends with the connector plugs jjl provided and then this in the lamp base inserted.

Since the Kabelzopf after preparation with the terminal plugs 31 en the lamp base is connected, this can be done quickly and easily.

14 claims 4 sheets of drawings with 14 figures ./.

10981R / 1RO5

Claims (14)

J.P.Burgess-M.W.Polkinghorn - Claims 1. 'Larape socket for mounting in openings in thin-walled housings, characterized by the combination of the following features: a) a unit housing which has a recess (24) at one end for receiving a lamp (25) * a base for receiving connection plugs (31) at the other end and a recess (26) for receiving of contact pieces (27), between the recess (24) for receiving a lamp (25) and having the base, the recess (26) for receiving the contact pieces (27) in the open transition with the recess (24) for receiving a lamp (25) and the base and b) at least one contact piece (27) in snap engagement in the recess (26) for receiving contact pieces, the contact piece (27) simultaneously with the lamp (25) inserted into a recess (24) and a connector (31) makes contact in the socket provided. 2. Lamp base according to claim 1, characterized in that the contact piece (27) at one end with a bent and in contact with the lamp part (28) is provided and at the other end a leaf spring-like and with the connector in Has contact located extension (29). 3. lamp base according to claim 1, characterized in that that the recesses (26) for receiving the contact pieces have a projection (30) for snapping in and Have pest hold the inserted contact pieces (27). September 23, 1970 Wr / Wa ./. J.P. Burgess-M.W. Polkinghorn - 4. lamp base according to claim 1, characterized in that that the base for receiving the connector (31) is provided with an inner shoulder (34) and behind this shoulder (34) to snap in and hold the connector (31) a resilient tongue (35) engages the connector. 5 lamp base according to claim 1, characterized in that that the housing has protruding towers (33) for the connectors (31) » 6. lamp base according to claim 5, characterized in that that the housing around the towers (33) with a protective Collar (45) is provided. 7. lamp base according to claim 5> characterized in that that the housing is provided with a sealing unit (51) over the towers (33), and in the Seal openings for the connector (31) available. 8. Lamp base according to claim 7, characterized in that the sealing unit (51) consists of a plurality of individual seals and each individual seal covers a tower (33) and each seal has an opening for a connector. 9. Lamp base according to claim 1, characterized in that an annular surface (62) with the housing a circumferential lip-shaped extension (62a) to which an annular member is attached Pressure ring (38) rests, is attached. .A 1 0 9 ?, 1 R / 1 ^ η R JPBurgess-MWPolkinghorn - yf - 10. lamp base according to claim 1, characterized in that that on the housing at a distance from the splash (62) shoulders (77, 78, 79) as a stop at the height of the recess (74) are attached for the lamp. 11. Lamp base according to claim 1, characterized in that an elastic annular member, a pressure ring (38) is mounted on the Plansch (62) which the Wall of a built-in housing (87) presses against the shoulders (77, 78, 79). 12. Lamp base according to claim lo, characterized in that one of the shoulders (78) one in the direction of the Flange (62) facing locking projection (83) which in a corresponding opening in the lamp base engaging the receiving housing (87). 13. Lamp base according to claim 1, characterized in that that the unit housing in an upper housing part (61) and a lower housing part (55) is divided, the upper housing part (61) acting as a stop serving shoulders (77, 78, 79) and the recess (74) for a lamp (25) and the lower housing part (55) a plurality of guide and retaining pins (58, 59, 60), the recesses for the contacts with their seals and an annular flange (62) near the shoulders (77, 78, 79). 14. Lamp base according to claim Ij5, characterized in that that a tower (80) for receiving a light guide is attached to the upper housing part (61), which automatically on the filament of the inserted lamp (25) is aligned.