Lamp holder with retaining clip for lamp

Abstract

The present invention relates to a lamp holder, in particular a lamp holder for a cooking appliance lamp, such as a G9 lamp holder, comprising: a stone socket; a base receptacle for the base of the lamp formed on the upper side of the stone socket; a connecting contact on the lower side of the stone socket, the connecting contact being used for an external connecting conductor of a voltage supply device; a retaining clamp, by means of which the base of the lamp can be anchored in the base receptacle; two spring legs of the retaining clamp, the spring legs forming a receiving gap for the lamp base between them, the spring legs each having a free spring leg end and a spring leg end connected to the retaining leg and the spring legs being inserted into the base receptacle, wherein the retaining legs are arranged on the upper side of the stone socket and the free ends of the spring legs are inserted into the base receptacle with the free ends pointing in the direction of the lower side of the stone socket.

Description

Technical Field

[0001] The present invention relates to a lamp socket, in particular a lamp socket for a cooking appliance lamp, such as a G9 lamp socket, comprising: a stone socket; a base receptacle for the base of the lamp formed on the upper side of the stone socket; a connecting contact on the lower side of the stone socket, the connecting contact being for an external connecting conductor of a voltage supply device; a retaining clamp, by means of which the base of the lamp can be anchored in the base receptacle; and two spring legs of the retaining clamp, the spring legs forming a receiving gap for the lamp base between them, the spring legs each having a free spring leg end and a spring leg end connected to the retaining leg and the spring legs being inserted into the base receptacle. Background Art

[0002] Lamp holders of this type are sufficiently known, for example, from EP 1 811 227 and are widely used, in particular, for illuminating the interior of cooking appliances.

[0003] Such lamp holders have been proven in the prior art and, even with the introduction of LED technology, have continued to be widely used as part of cooking appliance lamps. This is also due to the relatively low temperature sensitivity of the lamp components and to established and cost-effective components and manufacturing methods. Summary of the Invention

[0004] Nevertheless, efforts are still being made to further simplify the production of lampholders of similar type.

[0005] The object of the invention is firstly achieved by the lamp holder according to the invention in that the retaining legs are arranged on the upper side of the stone socket and the free ends of the spring legs are inserted into the base receptacle with the free ends pointing in the direction of the underside of the stone socket.

[0006] An essential advantage of the invention is that the retaining clip, which was previously inserted into the stone socket from below, is now inserted into the stone socket from the upper side.

[0007] This creates free structural space on the underside of the stone socket, which is relatively narrow due to the already installed connecting contacts. As will be shown in the following description of the exemplary embodiment, this creates structural freedom in the area of ​​the underside of the stone socket, which can be used, for example, for optimized base ventilation of a lamp installed in the socket.

[0008] It is provided that the stone socket forms a fastening contour for retaining legs on its upper side, and the retaining legs fix the spring legs on the stone socket, in particular each spring leg is connected to a retaining leg, and the fastening contour is a retaining slot machined on the upper side of the stone socket in the direction of the lower side of the stone socket, and the retaining slot is arranged next to the base receptacle.

[0009] In this embodiment, the invention provides that each spring leg is fixed individually in the stone receptacle, wherein the retaining leg of each spring leg is fixed in the fastening contour in a locking, but preferably form-fitting manner.

[0010] However, it is particularly preferred that the retaining clip is part of a fastening ring that is fixed to the stone socket and surrounds the base receptacle. Such fastening rings are also well known from the aforementioned prior art. Such fastening rings, in conjunction with a mounting flange, are used to secure the lamp holder in a recess in the cooking chamber wall. To this end, the cooking chamber wall is accommodated between the mounting flange and a support, typically a locking spring. If the retaining clip is now part of this fastening ring, the number of components to be assembled is reduced, thus reducing manufacturing costs and simplifying the production process.

[0011] It is entirely possible to provide that the spring legs are connected to the fastening ring only for the assembly process and, in a subsequent assembly step, are separated from the fastening ring by a suitable tool in order to avoid an electrically conductive connection between the spring legs of the retaining clip and the fastening ring. During this release process, the tool can anchor the retaining legs in a corresponding fastening contour of the stone socket in a non-positive or positive manner (e.g., by deformation of the material).

[0012] However, it is also conceivable that the spring legs connected to the retaining ring are equipped with retaining arms which, when the fastening ring is inserted into the stone receptacle, are anchored in the fastening contour in a form-fitting or force-fitting manner. For separation, the material bridges existing between the spring legs and / or retaining legs and the fastening ring are then severed.

[0013] Additionally or alternatively, electrical safety can be established by providing the fastening ring with a ground connection.

[0014] The stone socket is provided with a lamp receiving portion surrounded by a wall on its upper side, the bottom of which forms a base receiving portion, and in particular the wall forms a fixing cavity on its inner surface, into which the fixing projection of the fastening ring engages.

[0015] By means of the fastening cavities, in which the fastening projections of the fastening ring engage, the fastening ring can be fastened particularly simply, permanently and force-stable to the stone socket.

[0016] Furthermore, it is provided that the wall has locking recesses through which the locking wings of the fastening ring extend, and that the wall forms a mounting flange, wherein the cooking chamber wall can be arranged between the locking wings and the mounting flange for holding the socket.

[0017] A further reduction in components is achieved if the fastening ring has at least one retaining means for the luminaire lens, wherein provision is made for the retaining means to be a bayonet-type projection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Further advantages and a better understanding of the present invention will be obtained from the following description of the embodiments.

[0019] Figure 1 An exploded view of a cooking appliance lamp having a lamp holder according to the present invention is shown;

[0020] Figure 2 Shown in perspective Figure 1 The fastening ring of the lamp holder shown in;

[0021] Figure 3 Shown in top view Figure 2 Fastening ring;

[0022] Figure 4 In accordance with Figure 3 The cross-sectional view along the cutting line IV-IV shows the Figure 3 Fastening ring;

[0023] Figure 5 shows a side view of a socket according to the present invention;

[0024] Figure 6 Show lamp holder according to Figure 5 A sectional view of the cutting line VI-VI in FIG;

[0025] Figure 7 Shown in accordance with Figure 6 A view with an inserted lamp;

[0026] Figure 8 A view showing a lamp holder according to the invention from its upper side; and

[0027] Figure 9 The lampholder according to the invention is shown from its underside. DETAILED DESCRIPTION

[0028] In the figures, a cooking appliance light is generally designated by the reference numeral 10 .

[0029] exist Figure 1 1 shows a cooker light 10 in an exploded view and comprises a light glass 11 , a lamp 12 (designed here as a G9 lamp) and a lamp holder, which is generally designated by the reference numeral 13 .

[0030] The lamp holder 13 is firstly formed by a stone socket 14 which supports a fastening ring 15 , holds a ground connection 16 and accommodates a socket contact 17 as well as a connection contact 18 .

[0031] In this case, the fastening ring 15 and the ground connection are arranged on the upper side of the stone socket 14. The socket contact 17 and the connection contact 18 are accommodated in a support 19 on the underside of the stone socket 14.

[0032] The lamp 12 comprises a bulb 20 and a lamp base 21 connected to the bulb, wherein the lamp base has two base contacts 22 .

[0033] Figure 5 、 8 and 9 show the stone socket 14 . Figure 5 Showing a side view, Figure 8 shows a top view, and Figure 9 A view of the underside of the stone socket 14 is shown.

[0034] Depend on Figure 5 It can be seen that the stone socket 14 has two supports 19 on its underside. A ventilation gap 23 is formed between the two supports 19, which allows cooling of the lamp base 21 inserted into the stone socket 14. Figure 5 The ground connection 16 can be seen in the drawing plane behind the support 19 , which is inserted into the stone socket 14 from the top.

[0035] The stone socket 14 forms a socket base 24 , from which the support 19 extends in the downward direction and on which an annular wall 25 is mounted in the opposite direction, which supports a mounting flange 26 at its upper end.

[0036] The annular wall 25 vertically surrounds a receiving space 27 between the mounting flange 26 and the socket base 24 , into which the fastening ring and the lamp 12 are inserted and which accommodates a lamp flange 28 for fixing the lamp lens 11 to the stone socket 14 .

[0037] Figure 1 Combine Figure 5 It is shown that the annular wall 25 has, in two diametrically opposite sections, locking spring recesses 29 , through which locking springs 30 of the fastening ring 15 emerge.

[0038] Figure 8 The stone socket 14 is shown in a top view, ie a view of the upper side of the socket bottom 24. Figure 8First, it can be seen that the mounting flange 26 surrounds an insertion opening 31, through which the receiving space 27 is accessible, and which is delimited from below by the socket base 24. In addition to the locking spring recess 29, the annular wall 25 of the stone socket 14 has two diametrically opposed grooves 32 offset by 90°, into which fastening arms 33 are inserted for holding the luminaire lens 11.

[0039] The base base 24 of the socket includes a base receptacle 34, which extends in a blind-hole-like manner toward the underside of the socket and into which the lamp base 21 of the lamp 12 can be inserted. The base receptacle 34 has a roughly rectangular cross-section and is surrounded by two mutually opposing end walls 35 and two mutually opposing transverse walls 36. The transverse walls 36 each have a spring recess 37, which is arranged approximately in the center of each transverse wall 36 and serves to guide a spring leg 38 of a retaining clip 39 through.

[0040] The respective spring recesses 37 merge into bearing recesses 40. These bearing recesses 40 have a ground wire receptacle 41 through which the ground wire connection 16 is inserted and retained. A portion of each bearing recess 40 comprises a slot receptacle 42 parallel to the transverse wall. One of the bearing recesses 40 contains a stabilizing pin 43 protruding upward, the function of which will be explained later.

[0041] exist Figure 9 In the bottom view of the stone socket 14 in FIG, the support elements 19 can first be seen, which protrude toward the viewer from the bottom side of the socket base 24. Each support element 19 is provided with a contact cavity 44, in which the connecting contact 18 and the socket contact 17 (not shown here) are arranged.

[0042] In this view, the ventilation gaps 23 extending between the supports 19 function well.

[0043] according to Figure 9 It is particularly clear that the locking spring 30 extends outward through the locking spring recess 29 and projects outward relative to the annular wall 25 , so that it is arranged below the mounting flange 26 . Figure 9 Also shown are coding ribs 45, which are arranged on the outer circumference of the annular wall 25 and serve to orient the stone socket 14 correctly in the cooking space wall. The spring legs 38 of the fastening ring 15, which are inserted into the stone socket 14, are oriented with their free ends below the base receptacle 34 toward the underside of the stone socket 14, i.e., toward the bottom. Figure 9 extends in the direction of the observer and Figure 9The spring legs can be seen in the figure within the base receptacle 34 in the region of the ventilation gap 23 .

[0044] Figures 2 to 4 The fastening ring 15 is now shown in different views. Figure 2 A perspective view of the upper side of the fastening ring 15 is shown. Figure 3 The fastening ring 15 is shown from above, while Figure 4 Shown in accordance with Figure 3 Sectional view along the cutting line IV-IV.

[0045] The fastening ring 15 firstly comprises a base plate 46 which is Figure 2 and 3 The lower side pointing away from the observer faces the socket base 24 and is supported on the socket base. The base plate 46 has a central recess 47 which, when correctly mounted in the stone socket 14, is aligned with the base receptacle 34 and through which the lamp base 21 can be inserted into the base receptacle 34.

[0046] In the present embodiment of the invention, the retaining clamp 39 is integrated into the fastening ring 15 , so that the base plate 46 , to which the spring legs 38 of the retaining clamp 39 are connected, assumes the function of the retaining legs.

[0047] Each spring leg 38 is connected to a stabilizing strip 48 which is bent away from the base plate 46 in the direction of the underside of the stone socket 14 and is oriented parallel to the respective adjacent transverse wall 36 of the base receptacle 34 .

[0048] Then, the locking spring 30 of the fastening ring 15 and the fastening arms 33 for holding the lamp glass 11 are molded on the outer periphery of the base plate 46. In addition, the outer edge of the fastening ring 15 is provided with fixing protrusions 49 on the right and left sides of the fastening arms 33. The fixing protrusions correspond to corresponding fixing cavities 50, which are machined into the annular wall 25 of the fastening ring 15 on the inner periphery, as shown in FIG. Figure 1 A spring lug 51 is introduced into the base plate 46 between each fixing projection 49 and the adjacent fastening arm 33 in order to increase the spring travel of the fastening arm 33 , which offers advantages with regard to the fastening of the luminaire lens 11 , which however do not need to be explained in further detail here.

[0049] Especially with the help of Figure 4 It becomes clear from the sectional view that the spring legs 38 extend from the base plate 46 of the fastening ring 15 in the direction of the underside of the stone socket and that the stabilizing strips 48 are also formed from the base plate 46 in the direction of the underside of the stone socket 14 .

[0050] In contrast to this, both the locking spring 30 and the securing arm 33 and finally the securing projection 49 point in opposite directions and likewise have their respective starting points on the base plate 46 .

[0051] Figure 6 and 7 (Stone socket 14 is in accordance with Figure 5 The sectional view along the section line VI-VI in FIG) shows the fastening ring 15 introduced into the receiving space 27 of the stone socket 14, Figure 7 The case has lights 12 added.

[0052] The fastening ring 15 is pushed into the receiving space 27 of the stone socket 14 from the upper side of the socket, wherein the fastening arms 33 and the grooves 32 ( Figure 8 ) and the locking spring 30 is aligned with the locking spring notch 29 ( Figure 8 ) are aligned. The fastening arms 33 are inserted into the recesses 32 with only a frictional fit, while the locking springs 30 engage through the correspondingly provided locking spring recesses 29 and thereby assist in the positive-locking fixation of the fastening ring 15 in the stone receptacle 14. However, the actual fastening of the fastening ring 15 is achieved by the cooperation of the fastening projections 49 with the fastening cavities 50, which engage in these cavities and thus ensure that the fastening ring 15 is held positively in the stone receptacle 14. The spring legs 38 engage in the base receptacle 34 through the corresponding spring recesses 37 in each transverse wall 36, with the respective free spring leg ends pointing toward the underside of the stone receptacle 14 or the underside of the lampholder 13.

[0053] The stabilizing strips 48 (to which the spring legs 38 are connected) are inserted into the respective slot receptacles ( Figure 8 ), among which, about Figure 6 and 7 The right-hand stabilizing strip 48 is supported on the stabilizing pin 43. The stabilizing pin 43 is omitted in the case of the left-hand stabilizing strip 48, since in this embodiment it rests against the ground connection 16, which here assumes the function of the stabilizing pin 43.

[0054] exist Figure 7 The lamp 12 shown in the figure now shows the effect of the retaining clip 39 with its spring legs 38. The lamp base 21 inserted into the base receptacle 34 causes the spring arms to spread outward, whose restoring elasticity exerts a force directed toward the base and engages lockingly from behind with the base ribs 52 molded onto the base. This prevents the lamp 12 from falling out. Figure 7Furthermore, the function of the stabilizing pins 43 and the stabilizing strips 48 is shown. The outwardly directed expansion forces of the lamp base 21 are blocked by the stabilizing pins 43, so that the spring legs 38 can exert a high pressing force on the lamp base 21 in order to securely anchor it in the stone socket 14. Figure 6 and 7 In the case of the stabilizing strip 48 on the left side of the drawing plane, the function of the stabilizing pin 43 is assumed there by the ground connection 16, but this is only an advantageous design option for this specific embodiment. It is easily conceivable to provide a stabilizing pin 43 there as well and to ensure electrical contact between the fastening ring 15 and the ground connection 16 in some other way.

[0055] As can be readily seen from the description, the modified arrangement of the retaining clips 39 primarily frees up space on the base underside, since only the socket contacts 17 and the connecting contacts 18 are to be arranged there. It also becomes apparent that the modified arrangement of the retaining clips 39 allows for improved ventilation of the lamp base 21 by introducing ventilation gaps 23 into the socket underside, which increases the service life of the lamp 12, particularly in cooking appliances at extreme temperatures.

[0056] The integration of the retaining clip 39 into the fastening ring 15 , which is known in various forms and required in similar lampholders, results in a reduction in components, which simplifies production and assembly.

[0057] The drawings show that various modifications of the invention are easily conceivable. For example, the retaining clip 39 (if it is not part of the fastening ring 15) can also be inserted from above into the stone receptacle 14. The base plate 46 of the fastening ring 15 is correspondingly reduced in diameter and does not support any additional components, such as the locking spring 30 and the fastening arms 33. The base plate 46 then contains only the spring legs 38, which do not even necessarily need to be attached to the base plate 46 via the stabilizing strips 48, but can be arranged above it.

[0058] It is also conceivable to consider the retaining clip 39 as a single component. It is absolutely conceivable that each stabilizing strip 48 supports a spring leg 38 and that these spring legs (without inserting further components of the fastening ring 15 and without inserting the base plate 46) are inserted into the slot receptacle 42 and anchored there in a form-fitting or force-fitting manner. Even if this does not result in a reduction in components, the advantageous new arrangement of the retaining clip 39 is maintained.

[0059] Finally, it is conceivable to retain the retaining clip 39 as an integral unit in the fastening ring 15 and to assemble the fastening ring 15 as described above. However, in a second working step, the connection between the base plate 46 and the spring legs 38 can then be disconnected, for example by separating the stabilizing strips 48 from the base plate 46, which can then be held in a form-fitting or force-fitting manner in the stone receptacle 14. This further improves electrical safety (particularly by omitting the ground connection 16).

[0060] In summary, the present invention therefore shows an advantageous new embodiment of a lamp holder for a cooking appliance, in particular a G9 lamp holder, and its use in general in cooking appliances such as ovens, steamers, microwave ovens, etc.

[0061] Reference Signs List

[0062] 10 Cooking Equipment Lamps

[0063] 11 Lamp glass

[0064] 12 lights

[0065] 13 lamp holders

[0066] 14 Stone Sockets

[0067] 15 Fastening ring

[0068] 16 ground connection terminal

[0069] 17 socket contacts

[0070] 18 connecting contacts

[0071] 19 support

[0072] 20 light bulbs

[0073] 21 lamp base

[0074] 22 base contacts

[0075] 23 ventilation gap

[0076] 24 socket bottom

[0077] 25 annular wall

[0078] 26 mounting flange

[0079] 27 Accommodation Space

[0080] 28 lamp flange

[0081] 29 locking spring notch

[0082] 30 locking spring

[0083] 31 Insert opening

[0084] 32 grooves

[0085] 33 Fastening arm

[0086] 34 base accommodating portion

[0087] 35 end wall

[0088] 36 lateral wall

[0089] 37 spring gap

[0090] 38 spring legs

[0091] 39 retaining clip

[0092] 40 support gap

[0093] 41 ground wire accommodation portion

[0094] 42 gap accommodating portion

[0095] 43 stabilizing pin

[0096] 44 contact cavity

[0097] 45 coded ribs

[0098] 46 substrate

[0099] 47 The gap in the middle

[0100] 48 stabilizing slats

[0101] 49 fixed protrusion

[0102] 50 fixed cavity

[0103] 51 elastic sheet

[0104] 52 base ribs

Claims

1. A lamp holder (13), comprising: Stone socket (14); A base receiving portion (34) formed on the upper side of the stone socket (14), the base receiving portion being used to receive a lamp base (21) of the lamp (12); a connecting contact (18) on the underside of the stone socket (14) for an external connecting conductor of the voltage supply; a retaining clip (39), by means of which the lamp base (21) of the lamp (12) can be anchored in the base receptacle (34); Two spring legs (38) of the holding clamp (39), the spring legs forming a receiving gap for the lamp base (21) between them, the spring legs each having a free spring leg end and a spring leg end connected to the holding leg and the spring legs being inserted into the base receiving portion (34), The retaining legs are arranged on the upper side of the stone socket (14), and the free ends of the spring legs (38) are inserted into the base accommodating portion (34) with the free ends pointing in the direction of the lower side of the stone socket (14), characterized in that the stone socket (14) forms a fastening contour for the retaining legs on its upper side, the retaining legs fix the spring legs (38) on the stone socket (14), each spring leg (38) is connected to a retaining leg, the fastening contour is a retaining slot machined on the upper side of the stone socket (14) in the direction of the lower side of the stone socket, and the retaining slot is arranged next to the base accommodating portion (34).

2. The lamp holder (13) according to claim 1, characterized in that The lamp holder (13) is a lamp holder for a cooking equipment lamp (10).

3. The lamp holder (13) according to claim 2, characterized in that The lamp holder (13) is a G9 lamp holder.

4. The lamp holder (13) according to any one of claims 1 to 3, characterized in that The retaining clip (39) is part of a fastening ring (15) which is fixed to the stone socket (14) and surrounds the base receptacle (34).

5. The lamp holder (13) according to claim 4, characterized in that The stone socket (14) forms a lamp receptacle on its upper side which is surrounded by a wall, the bottom of which forms a base receptacle (34).

6. The lamp holder (13) according to claim 5, characterized in that The wall forms a fixing cavity on its inner surface, and the fixing protrusion of the fastening ring (15) is embedded in the fixing cavity.

7. The lamp holder (13) according to claim 5 or 6, characterized in that The wall has a locking spring notch (29) through which the locking wing of the fastening ring (15) passes, and the wall forms a mounting flange (26), between which the cooking space wall can be arranged for holding the lamp holder (13).

8. The lamp holder (13) according to claim 4, characterized in that The fastening ring (15) has at least one retaining mechanism for the luminaire glass (11).

9. The lamp holder (13) according to claim 8, characterized in that The retaining mechanism is a bayonet-type protrusion.

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