EP1845593A2 - Mounting for discharge lamps for greenhouses - Google Patents

Abstract

The holder has a retainer unit provided at an end of an electrical equipment, and a clamping unit for releasing or clamping and contacting a connection provided at the electrical equipment in an alternative manner. A safety unit is movably supported between a closing position and a releasing position at a body containing the retainer unit in order to enclose or release another end of the electrical equipment. The safety unit is connected with the clamping unit in order to operate the clamping unit.

Description

The invention relates to a socket for an electrical equipment, in particular a discharge lamp, e.g. as it is suitable for greenhouses. In greenhouses discharge lamps are often used, which have a high power of, for example, 1 kW, and which are operated at high voltage. These discharge lamps usually have a glass tube, which einhaust the actual discharge tube and is provided at the ends with squeezing feet. From each presser foot protrudes a lead wire, which is provided with a serving for contacting strand section.

The squeezing feet are subject to a high dimensional tolerance. Some are in the cross section I-shaped, others in turn Z-shaped. Also, it can not be guaranteed that the pinch feet are arranged at both ends of the lamp in the same orientation with respect to the lamp longitudinal axis. It may well happen that the squeezing feet are rotated by a few degrees against each other.

These discharge lamps must be changed from time to time. It must be ensured that neither electrical hazards nor mechanical hazards to the operator are to be feared. In particular, glass breakage is to be avoided.

On this basis, it is an object of the invention to provide a simple and safe to use socket for an electrical equipment, in particular a gas discharge lamp for greenhouses.

This object is achieved with the version according to claim 1:

The version according to the invention comprises a receiving means for one end of the operating means, a clamping device for selectively releasing or clamping and contacting the terminal of the operating means and a movably mounted on the receiving means securing means with which an end of the operating means can be included and released and with the Clamping device is connected to operate this.

With this configuration, the resource or, more specifically, the discharge lamp is held by the clamp at its terminal. The securing means together with the receiving means a compartment or a recess which receives at least a portion of the pinch with a reasonably large game. The game ensures that regardless of the significant dimensional tolerances of the crotch of the securing means and / or the receiving means no mechanical constraining forces are exerted on the squeezing. In effect, the squeezing foot floats in the compartment formed by the securing means and the receiving means while it is held at its connection. On the other hand, prevent the receiving means and the securing means that the pinch and fall out with it the resources and the gas discharge lamp from the socket.

The lamp replacement is easy to accomplish by the securing means is moved from its closed position to its release position. The so far only one-sided open receptacle for the pinch is thereby opened on one side. In addition, the clamping device is released. The squeezing foot and the connection provided on it can now be removed from the socket without force.

The operation is simple and safe. Neither turning the rod-shaped operating means or the gas discharge lamp about its longitudinal axis nor any other significant force on the gas discharge lamp is required.

Preferably, the receiving means has a bearing surface which adjoins at least one groove. This groove may e.g. serve to receive a crushing edge of the squeezing. Preferably, the support surface of two mutually parallel grooves is limited. In these grooves, the crushing edges of a pinch can protrude. It does not matter whether the gas discharge lamp has an I-cramping foot or a Z-cramping foot.

In addition, a spring means may be provided on the mount, which cooperates with the operating means, in particular its squeezing foot. For example, the spring means may press against the face of the squeeze foot. This will be gas discharge lamps, which are held between two oppositely arranged sockets held by the spring means yielding even when the two securing means of the versions are in the release position. Unintentional falling out of the gas discharge lamp from the versions is therefore avoided during assembly or disassembly of the gas discharge lamp.

The spring means may for example be designed as bending springs, which are e.g. can protrude out of the grooves, which may be provided on both sides of the support surface. In addition, the socket housing may have pockets for receiving these spring means.

The support surface may also have a recess, for example, a central recess in the form of a groove. This also Quetschfüße can be used in the socket, which have a bead-like or rib-like increase in the region of its central connecting wire. This then fits in the groove.

The support surface preferably has a convex shape. This shape can be achieved by a curvature of the support surface or even by being made of, for example, surface portions which are arranged at an obtuse angle to each other. By this measure, the version is particularly insensitive to misorientations of the gas discharge lamp about its longitudinal axis, which may result from twists of the two pinch feet against each other.

The receiving means as well as the securing means is preferably formed by a plastic body. The respective plastic body is preferably formed in one piece. Thus, the receiving means and the securing means together form a two- or multi-part socket housing, on the one hand on a bulb holder is mounted and on the other hand holds the lamp and einhaust all electrically live parts. The securing means can also serve as a handle, so that it can be moved to open and close the socket back and forth.

The securing means may be provided with one or more, preferably two ribs, which face the support surface of the receiving means and thus the squeezing foot. The ribs do not touch the pinch foot or only slightly and merely serve to limit its play in the receiving chamber formed by the receiving means and the securing means. In addition, the heat-transferring contact between the hot or hot pinch and the plastic housing is minimized.

The clamping device includes at least one movably mounted element and a counter element, which can clamp between each other the connection of the operating means. It can also be movably mounted both elements. At least one of these elements is designed as a contact element. It has a double function. On the one hand it mechanically holds the connection of the equipment and thus the equipment in place and on the other hand it causes the electrical contact. Preferably, the contact element is arranged so that it cooperates with the flexible strand-like termination of the connection of the operating means.

Preferably, the socket is also provided with a switch means. This preferably acts between the electrical contact and the associated feed line. The switch means is preferably actuated by the securing means. If the securing means is in the closed position, an electrical current flow between the supply line and contact is possible. If the securing means in release position is the electrical current flow between the contact and the feedline interrupted. As a result, the lamp is de-energized when the securing means, such as a suitable slide, is transferred to the lamp change in the release position. If an operator removes the lamp from the socket and touches the contact that has already been exposed, it can not come to the electrical flow through the operator, because the contact still in the socket is de-energized.

Figur 1

eine erfindungsgemäße Fassung in offenem Zustand in perspektivischer Darstellung,

Figur 2

die Fassung nach Figur 1 in ruckseitiger Perspektive,

Figur 3

das zu der Fassung nach Figur 1 und 2 gehörige Aufnahmemittel,

Figur 4

das von dem Aufnahmemittel nach Figur 3 abgenommene und zu der Fassung nach den Figuren 1 und 2 gehörige Sicherungsmittel,

Figur 5

die Fassung nach Figur 1 mit eingesetztem Quetschfuß in horizontal geschnittener Draufsicht in Freigabeposition,

Figur 6

die Fassung nach Figur 5 in Schließposition,

Figur 7

die Klemmeinrichtung der Fassung nach den Figuren 1 und 2 in Freigabeposition und

Figur 8

die Klemmeinrichtung nach Figur 7 in Schließposition.

Further details of advantageous embodiments of the invention are the subject of the drawings, claims or description. Show it;

FIG. 1

an inventive version in the open state in a perspective view,

FIG. 2

the version of Figure 1 in a retrospective perspective,

FIG. 3

the receiving means belonging to the version according to FIGS. 1 and 2,

FIG. 4

3 taken from the receiving means of Figure 3 and belonging to the version according to Figures 1 and 2 securing means,

FIG. 5

the version of Figure 1 with inserted pinch in horizontally cut plan view in the release position,

FIG. 6

the version of Figure 5 in the closed position,

FIG. 7

the clamping device of the socket according to Figures 1 and 2 in the release position and

FIG. 8

the clamping device of Figure 7 in the closed position.

FIG. 1 illustrates a lampholder 1 suitable for an electrical equipment, in particular a gas discharge lamp. The socket is particularly suitable for the storage and connection of gas discharge lamps high and high power of, for example, 1 kW or more, which have at their end, as shown in Figure 5 and 6, a pinch 2. This extends in a straight extension of a lamp tube 3 consisting of glass. The pinch foot may have an I-shaped cross section, which comprises, for example, a central web 4 and lateral edges 5, 6. These are like narrow high ribs away from the central web 4. In addition, the central web 4 may be provided with a rib-like bulge or elevation 7. For this, a connection wire 8 extends away from the squeezing foot 2 on the front side of the squeeze foot 2. The connecting wire may be provided at its end with a stranded section 9.

The socket 1 has a receiving means 11 for receiving the presser foot 2, which is designed in the form of a suitable recess on a housing 10 belonging to the housing 10, shown in Figure 3. The housing part 12 is made of plastic and is preferably formed in one piece. For attachment to a base, it has attachment openings 13, 14, 15, 16, 17, which are provided on corresponding flanges or projections. At its lamp-side end face 18 of the housing part 12 is formed substantially flat. This level is penetrated by the receiving means 11 forming opening which is open to the end face 18 and upwards. The wall of this opening is formed by a support surface 19, which is oriented substantially at right angles to the end face 18 and facing upward. The support surface 19 is bounded on both sides by parallel grooves 20, 21, of which side walls 22, 23 protrude. The grooves 20, 21 limit with the Side walls 22, 23 pockets in which leaf springs 24, 25 are held. These protrude with a free tongue in an area above the support surface 19 and are intended to press against the end face of the squeeze 2 (Figure 5 and 6).

The support surface 19 may, as illustrated in FIG. 3, be subdivided into two partial surfaces 19 a, 19 b, which are at an obtuse angle to each other and adjoin a central groove or groove 26. This serves to receive the elevation 7, which may be formed on the pinch 2.

Approximately parallel to the end face 18, a partition wall 27 is formed in the housing part 12, which separates the receiving means 11 from a contact chamber 28. The partition wall 27 is provided with a slot 29 which adjoins the groove 26. The slot 29 leads into the contact chamber 28 in which a clamping device 30 is arranged. To this belong at least one, preferably two contact elements 31, 32 which define a clamping slot 33 between each other and which are made somewhat flexible. They stand between the two side walls 22, 23.

The side walls 22, 23 form a sliding guide for a housing part 34 of the housing 10, which is shown separately in Figure 4. The housing part 34 has two spaced apart side wall portions 35, 36, with which the housing part 34 engages over the housing part 12. They are integral parts of the plastic body forming the housing part 34, which forms at its front end a securing means 37 which is adapted to hold the presser foot 2 of the gas discharge lamp in the receiving means 11. The securing means in this embodiment of the invention include at least two ribs 38, 39, which are arranged at a distance parallel to each other and the in Use and in the assembled state above the respective partial surfaces 19a, 19b and thus between the grooves 20, 21 are (see Figure 1). Between the ribs 38, 39, a slot 40 is formed on the housing part 34, which is arranged in a straight extension of the slot 29. The slot 40 is surrounded on three sides by a wall assembly and open to the resource. It serves for the insertion and execution of the connection in the form of the connection wire 8 and the strand section 9.

The housing part 34 forms a slide which can be pushed back and forth on the housing part 12 between a release position illustrated in FIGS. 1 and 2 and a closed position. In the release position, the slider is completely above the contact chamber 28 and thus releases the receiving means 11. The support surface 19 is exposed to day. In its closed position, it is advanced so far forward that its ribs 38, 39 are above the partial surfaces 19a, 19b. To secure the housing part 34 in its respective position, in particular in the closed position, a latching means 41 is provided, to which latching springs 42, 43 held on the side wall sections 35, 36 belong. These engage in corresponding, provided on the side walls 22, 23 of the housing part 12 grooves and recesses formed therein.

The housing part 34 also contains a connection contact 44 to which a feed line 46 is connected via a tab 45. The terminal contact 44 has two legs 47, 48, which form a free space between each other, which widens in a funnel-like or wedge-shaped manner towards the ends of the legs 47, 48. It serves to press the contact elements 31, 32 together in order to clamp the connection wire 8 and / or the strand section 9 between them. The contact elements 31, 32 can be integrally connected to each other be and form a corresponding U-shaped spiral spring. The contact elements 31, 32 and the legs 47, 48 together form a wedge gear 49, which converts the movement of the housing part 34 into a movement of the contact elements 31, 32, which is oriented at right angles to the movement of the housing part 34.

The contact elements, together with the legs 47, 48, form an electrical separator, i. a switch with disconnecting function. This switch is controlled by the slider, i. operated by the securing means and automatically switches the lamp off when the socket is opened. '

The version 1 described so far works as follows:

To accommodate the squeeze 2 of a gas discharge lamp is the version 1 in the position shown in Figure 1, which is shown in Figure 5 again in section. The housing part 34 is in its release position. The receptacle 11 forming the opening of the socket 1 is to the pinch 2 back and forth, ie in Figure 5 perpendicular to the plane, open. It is now possible to insert the pinch foot 2 of a gas discharge lamp into the socket. In this case, his connection wire 8 and the stranded section 9 passes through the slot 40 (Figure 1) and the slot 29, wherein it passes between the contact elements 31, 32 (Figure 5). The legs 47, 48 are in proper safety distance from the contact elements 31, 32. These are thus dead and even if the lamp in question is not turned off. Ignition of the gas discharge lamp, which could scare or even injure an operator, is therefore excluded. The leaf springs 24, 25 press against the end of the squeeze 2 and secure this provisionally in place. This in particular if they have a slight inclination against the support surface 19 (19a, 19b), ie enclose with this an acute angle. Of the corresponding operation is carried out at both ends of the gas discharge lamp with two at a corresponding distance from each other oppositely arranged sockets 1.

If the gas discharge lamp is in the two sockets, it is initially provisionally held between the respective springs 24, 25. The squeezing 2 is doing little or only completely loose on the support surfaces 19 of the two versions. It can now be transferred simultaneously or successively, the two housing parts 34 of the participating versions in the closed position. This is illustrated in FIG. It drive while the ribs 38, 39 on the Quetschfuß 2 or via its central web 4 and secure the pinch in the version 1. He can not fall out thus. However, there is no firm contact between plastic surfaces of the housing 10 and the squeezing 2.

During the transfer of the housing part 34 in the closed position, the legs 47, 48 travel laterally over the contact elements 31, 32, which are thus electrically connected to the feed line 46. In addition, the contact elements 31, 32 are clamped together by the legs 47, 48 of the terminal 44. The legs 47, 48 act on angled rear tabs 31a, 32a of the contact elements 31, 32, so that between the rigidly mounted legs 47 and 48 and that portion of the contact element 31 and 32, with the connecting wire 8 or the stranded section 9 is in contact, a sufficient spring action is present. The contact elements 31, 32 thus perform a clamping movement and clamp the stranded portion 9 of the squeezing 2 between each other, whereby the lamp is held and electrically contacted.

With the version according to the invention, the secure storage of high-performance gas discharge lamps with glass pinch feet succeeds, on the one hand sensitive to breakage and mechanical stress and on the other hand must be handled easily and reliably even in harsh environment. To secure the lamp in the socket, this has a sliding element, with the one hand, a compartment for receiving the Quetschfußes the lamp is released or completed and on the other hand connects the electrical contacts of the lamp to the connecting line or separates from this. In that regard, the slider element forms on the one hand with the socket contacts an electrical switch. On the other hand, it forms a mechanical drive for the socket contacts, which are preferably tongue-like and clamp the lamp terminal like a pair of pliers between each other or release. In other words, the contact bracket provided on the sliding element cooperates with the contact elements of the stationary socket part as a switch and gearbox in order to clamp the contact elements together for clamping the lamp terminal.

Claims (22)

Socket (1) for an electrical equipment, in particular a discharge lamp,
with a receiving means (11) for one end of the operating medium,
a clamping device (30) for selectively enabling or clamping and contacting a connection (9) provided on the operating means,
with securing means (37) movably mounted on a body (12) containing said receiving means (11) between a closed position and a release position for enclosing or releasing one end (2) of said operating means and said clamping means (30) connected to operate this. Socket according to claim 1, characterized in that the receiving means (11) comprises a support surface (19) which adjoins at least one groove (20). Socket according to claim 1, characterized in that the receiving means (11) comprises a support surface '(19) which is bounded on opposite sides of two mutually parallel grooves (20, 21). Socket according to claim 1, characterized in that the receiving means (11) is associated with a spring means (24, 25). Socket according to claim 4, characterized in that the spring means (24, 25) is arranged so that it cooperates with one end (2) of the operating means. Socket according to claim 2 or 3 and 5, characterized in that the spring means (24, 25) comprises at least one spring (24) which is arranged at least with a portion in the groove (20). Socket according to claim 1, characterized in that the receiving means (11) comprises a bearing surface (19), which contains a recess (26). Socket according to claim 7, characterized in that the recess (26) is a groove which extends to the clamping device (30). Socket according to claim 1, characterized in that the receiving means (11) comprises a support surface (19) having a convex curvature. Socket according to claim 1, characterized in that the receiving means (11) comprises a bearing surface (19) which has at least two mutually at an obtuse angle surface portions (19a, 19b). Socket according to claim 1, characterized in that the receiving means (11) and / or the securing means (37) by or on a body (12, 34) made of plastic. Socket according to claim 1, characterized in that the securing means (37) has a portion with at least one protrusion (38) facing the receiving means (11). Socket according to claim 12, characterized in that the elevation (38) is formed as a rib. Socket according to claim 12, characterized in that the portion has at least two as mutually parallel ribs (38, 39) formed elevations. Socket according to claim 12, characterized in that the securing means (37) is displaceably mounted. Socket according to claim 1, characterized in that the securing means (37) cooperates with a latching means (41) for fixing at least one latching position. Socket according to claim 1, characterized in that the clamping device (30) comprises at least one on the receiving means (11) movably mounted element (31) which is associated with the connection (8, 9) of the operating means. Socket according to claim 1, characterized in that the clamping device (30) includes at least one contact element (31) which is movable towards and away from a connection (8, 9) of the operating means. Socket according to Claim 1, characterized in that the clamping device (30) includes two contact elements (31, 32) which are movable towards and away from each other transversely to the securing means (37). Socket according to claim 12 and 18 or 19, characterized in that the contact element (31, 32) of a movably mounted housing part (34) is actuated. Socket according to claim 20, characterized in that the contact element (31, 32) of the movably mounted Housing part (34) via a wedge gear (48) is actuated. Socket according to Claim 20, characterized in that the socket comprises electrical switching means (31, 32, 47, 48) actuated by the securing means.

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