KR20080080301A - Luminaire having closure elements between a trough-shaped housing and a cover - Google Patents

Abstract

The invention relates to a luminaire (1) having a trough-shaped housing (2), terminals arranged therein for a lamp (6), a transparent cover (4) covering the opening of the housing (2), and sprung closure elements (3a) for holding the cover (4) fixedly on the housing (2), wherein the closure elements (3a) engage in each case with one end region (3b) in a pocket (13), which is located in one of the two parts, namely the housing (2) and the cover (4), wherein an arresting limb (17a) protrudes laterally from the end region (3b) and can preferably be pivoted in counter to an elastic resetting force, and wherein the other end region (3c) of the closure elements (3a) is designed such that it engages behind the respective other of the two parts. In order to improve the securing of the end region, the arresting limb (17a) forms an obtuse angle (W3) with the end region (3b), which angle is open towards the end of the end region (3b).

Description

Luminaire having closure elements between a trough-shaped housing and a cover}

The invention relates to a luminaire according to the preamble of claim 1 or 13.

This kind of luminaire consists of a two-part housing, one part of which is a trough-shaped housing with fastening elements for fixing to the carrier, for example to a wall or ceiling. . The other part is formed at least partially of a transparent cover and is detachably connected to the trough housing by the locking elements. In luminaires formed with trough housings and covers, the lamps can be mechanically and electrically connected, and light emitted to the lamps during operation is emitted through the transparent cover for interior lighting.

Luminaires of this kind are disclosed for example in EP 0 785 391 A1. In this known luminaire, approximately C-shaped locking elements serve to secure the cover to the trough housing, which are configured as individual components. The C-shaped locking element engages one end portion into a pocketed undercut portion in the trough housing through the restraint portion and extends past the separating seam between the trough housing and the cover. The other end portion engages behind the edge of the trough housing using a constant pulling force. This compresses the trough housing and cover together with a constant clamping force. Although forming the locking elements as separate components is easy to manufacture, especially with regard to their complex structure, the problem is that these locking elements have to be provided and handled as separate components and can also be lost. have.

Another problem with this known luminaire is due to the complex structure of the locking elements, in particular the complex structure of the end portions which engage into the pocket undercut portion of the trough housing. That is, in the case of the known luminaire, the restraint portion disposed at this end portion extends inclined in the mounting direction in the pocket-type undercut portion, and in the C-type, the other end portion is located at the rear of the trough housing. To interlock. Since the restraining branch extends obliquely, in order to insert the restraining branch into the pocket-type undercut portion, it must have a specific shape. In addition, the restraint branch is at risk of being over-stressed beyond its dead point.

The present invention is based on the object of improving and simplifying a luminaire of the kind described in the introduction, in connection with securing the end part in the pocket. This not only ensures a small number of components, but also facilitates or enables economical manufacture and assembly of the locking elements, there is no risk of loss, and / or is easy or possible to manufacture with duroplasts. It is intended to provide a simple shape.

This object is achieved by the features of claim 1 or 13. Preferred developments of the invention are disclosed in the appended dependent claims.

In the case of the luminaire according to the invention, the restraining branch has an obtuse angle with the end portion, which angle opens toward the end of the end portion. By this, the restraining branch is moved to a clamping position which prevents the detachment due to its elastic acupressure on the wall portion of the pocket and due to the frictional force that occurs when unintentionally detached. Thus, the restraining branch may be rigid or flexible, or may have a clamping edge or increase in friction cam to increase friction.

Due to the extension of the restraint branch according to the invention, it is possible to implement a latching or clamping blocking effect of fixing the locking part against the unintended separation of the problem. Preferably the arrangement is such that it does not separate without special aids, thereby effectively preventing the loss of the locking element or elements.

Within the scope of the present invention, the free end of the restraint branch can serve as a latch element or a clamp element and, when assembled, automatically and elastically disengages from the separation and automatically latches because of this elasticity. Or provide a latching constraint.

In the case of a luminaire according to claim 13 of the invention, the end portion is formed to form the two wall portions and three acupressure points. This ensures that the end portion is placed stably in the pocket, which allows the end portion to be reliably seated in the pocket because of the clamping effect acting on the wall portion of the pocket. The effect and the frictional contact obtained thereby likewise allow the end portion to be fixed in the pocket as desired. The shape, which is larger than the pocket width in the relaxed state due to the grooves in the side portions, can be elastically pressed together so that an assembly which is easily handled manually when inserted into the pocket is obtained. Thereby, the two lowest points at which the end portions press the wall portions of the pockets at those portions with spaced apart from each other, and the vertices disposed between them and the end portions pressing the facing wall portions of the pockets at those portions. The angled grooves have a simple shape, which is preferably formed by angled branches. In addition, it is desirable to provide an inclination or rounding at the three points of acupressure so that, upon insertion or removal, it can be automatically inserted by any lateral compression of the end portion.

If the shape faces outward or the remaining longitudinal portion of the locking element, it provides a simple structure, since the deformation between the first acupressure point and the remaining portions can simply be configured.

Other features of the progress of the present invention provide other improvements in structures that operate small and reliably.

In the following, preferred configurations of the present invention and the advantages obtainable thereby will be explained in more detail with reference to exemplary embodiments.

1 is a perspective view from below of a luminaire according to the invention.

2 is an enlarged longitudinal sectional view showing the left half of the luminaire.

3 is an enlarged cross sectional view of a modified configuration for the upper fixing part of a luminaire having a locking element according to the invention;

4 is a perspective view showing the interior of the locking element.

5 is a side perspective view of another variant configuration of the locking element according to the invention.

FIG. 6 shows the engagement of the locking element shown in FIG. 5; FIG.

7 is a side perspective view of another variant configuration of the locking element according to the invention.

8 shows the engagement of the locking element shown in FIG. 7;

The main part of the luminaire, generally indicated by reference numeral 1 in FIG. 1, is a cover 4 detachably coupled to the housing by a trough housing 2 and a plurality of locking devices 3 distributed around it. ) And a lamp 6 arranged in the hollow part 5 between the trough housing 2 and the cover 4, wherein the lamp 6 is provided by at least one mechanical and electrical connection element, not shown. It is connected and fixed.

In the case of this embodiment, for example, spray water infiltration, inter alia, spray water at the dividing joint site between the trough housing 2 and the cover 4, for example. Moisture-proof luminaires are included that meet special protection requirements against penetration. Such protection may be provided at the site of the separation seam 7, using webs 8a, 8b, 8c that extend in the circumferential direction, for example, interlocked with each other, such as in the form of a comb, which forms a maze to spray the water. It will provide protection against penetration.

In the case of this embodiment, the wall 2a of the trough housing will be branched into two web walls 8a, 8b with lateral spacing at their free edge portions, which web walls 8a, 8b. The lateral spacing therebetween is greater than the web wall 8c engaging therewith, the web wall 8c being separated, for example, from the wall 4a of the cover, which is formed, for example, in a trough or dome facing. In the direction of crossing, it protrudes.

In addition to the labyrinth, the separating seam 7 is preferably sealed by a ring seal, which ring circumferential groove 2b, for example, between the web walls 8a, 8b. It is provided with a sealing ring D, which is disposed at the base of the web and presses the web wall 8c. This sealing ring D is made of a soft material, for example a foam ribbon.

The outer web wall 8b of the housing wall 2a is the part of the enlarged step 9 at the free edge portion of the housing wall 2a.

The housing wall 2a has fixing elements 12 for fixing to the carrier, for example on its support side 11, which is formed towards the ceiling or wall of the room. In this embodiment, the luminaire 1 has a form in which the length is extended and enlarged straight, and the length L1 is a multiple of the width B. The trough housing 2 and the cover 4 are also correspondingly formed. The cover is made of a transparent material, for example glass or plastic, at least on its side away from the housing 2, through which the light of the lamp 6 is emitted in the main radiation direction S and in the lateral directions. The housing 2 is made of plastic, in particular duroplast.

The plurality of locking devices 3 are arranged and configured such that they are similar to each other or both sides are symmetrical to each other. Thus, at least one locking device 3 of other embodiments may be applied to each case described below.

In all embodiments, the locking device 3 has a locking element 3a having a longitudinal C-shaped longitudinal cross-sectional shape. This locking element 3a has end portions indicated by reference numerals 3b and 3c, and is engaged with the rear of the trough housing 2 and at the same time, the groove of the housing 2 with the upper end portion 3b. In particular in the pocket 13. The pockets opening away from the separating seam 7 have two pocket walls 13a and 13b facing each other, extending substantially parallel to the longitudinal intermediate plane 15, in order to provide clearance. It is adapted to the size of the end portion 3b. The groove 13 may extend only partially or in the longitudinal direction of the luminaire 1.

The locking element 3a extends from the end portion 3b towards the cover 4, on the outside of the luminaire housing, in a form suitable for the corresponding external shape of the housing 2, where the locking element 3a Extends beyond the separating seam 7 to engage the rear end of the enlarged step 10 of the cover 4 through the corresponding other end portion 3c, or if applicable, into the groove 10a formed therein. Hanging is combined. The latter is embodied through a rear engagement branch 3d which extends inwardly to be angled or curved, forming an end portion 3c, which end portion 3c is fixed to the rear engagement position by the fixing device 14. .

In the fixing device 14, the rear engagement portion 3d extends in the transverse direction or at a right angle to the separating seam 7, and the middle plane of the longitudinal direction of the luminaire 1 with respect to the enlarged shoulder portion 10. By being elastically biased inwardly with respect to (15), it can be formed to pull it inward rather than outward. This is achieved by having the rear engagement of the end portion 3c arranged at a distance a from the longitudinal intermediate plane 15 which is greater than the distance b from the longitudinal intermediate plane 15 of the rear engagement 3b. Thereby, a bias force 16 is provided, which is due to the rear engagement branch 3d which presses the enlarged step portion 10 with the elastic force in the elastically bent state, and the direction of action of the bias force 16 is An acute angle W1 is achieved with respect to the longitudinal intermediate plane 15. This biasing force causes the shot of the end portion 3b and / or the end portion 3c and / or the enlarged stepped portion 9 in connection with the formation of the locking element 3a which is formed after the outwardly curved stepped portion forming. It may be based on sexual bending.

The locking element 3a is formed by a web 3e extending evenly over its entire length, the thickness of which is denoted by d.

The hooked end portion 3b of the locking element 3a, which projects toward the free end portion 3c, is held in the pocket 13 by the restraint device 17 against unintended pulling and thereby separation. Is constrained. There are many exemplary embodiments of such constraints.

In the embodiment according to FIG. 2, the end portion 3b is embodied by at least one shape 18 of the web section 3f forming the end portion 3b, which is in the middle of the pocket 13. It is a waveform traversing the axis 13c and preferably faces outward. Thereby, the shape 18 can be formed of two angled branches 18a, 18b which preferably form an obtuse angle W2. With the end portion 3b relaxed or disassembled, the dimension of the shape 18 traversing the pocket 13 is larger than the corresponding transverse dimension c of the pocket 18. Although not shown, the over-size and bending resistance of the web section 3f forming the shape 18 or the angle branches 18a, 18b is such that the end portion is inserted or assembled into the pocket 13. At this time, the shape 18 is such that it can be easily applied manually and can be elastically compressed using pressure directed into the pocket, in which the shape 18 has an end portion 3b inserted therein. At the lowest and highest points or lines 22a, 22b, 22c, i.e. at the first and free ends of the shape 18 for 22a and 22c, and for the shape 18b. At the point of the highest point of the pressure, the elastic spreading forces P1, P2, P3 press against the facing walls 13a, 13b of the pocket 13 and act on the walls of the pocket 13. The clamping force of the three related acupressure points generated by the resilient rebound of the shape 18 is the acupressure point 2. 2a, 22c). For easy insertion of the free angle branch 18b, it is preferable to round the shape 18 or a variant of the angle branches 18a, 18b. In this way, the shaped web section 13f preferably slides in the walls 13a and 13b when inserted or removed from or into the pocket 13, thereby keeping the required compressive force small. . The rounding at the free end of the angle branch 18b can be formed by rounding using the branch vertex 18c.

 The configuration of the locking element 3a and of the housing 2 is characterized by a simple configuration, which is also suitable for manufacturing with a duroplasty.

 In the embodiment according to FIGS. 3 and 4, the same or similar parts have been given the same reference numerals, and where applicable, in addition to the constraints described above, the end portion 3b of the locking element 3a is provided with at least one restraint portion ( Constrained in the pocket 13 by 17a, wherein the restraint portion 17a projects laterally from the end portion 3b, is elastically repellable inward and outward, and the end portion 3b or its longitudinal direction. It forms an obtuse angle w3 with the intermediate axis 3e, which opens towards the free end of the end portion 3b and thereby also opens towards the base of the pocket 13. In the case of the present embodiment, the angle W3 is approximately 92 ° to approximately 100 °, and the length L2 of the restraint branch portion 17a is the side wall 13a disposed so as to face when the end portion 3b is inserted into the pocket 13. And the pressure on the side wall 13a with outward repulsion. In the case of this configuration, the restraining portion 17a has the effect of preventing the end portion 3b from being separated from the pocket 13, which is due to the static friction on the side wall when the end portion 3b is released. The restraint branch 17a is further bent, through which it is predetermined to block the escape movement. This blocking effect is particularly good when the free end of the restraining branch 17a presses the side wall 13a using the acupressure edge 17b, which increases the static frictional force and increases the blocking effect.

 The restraining branch 17a may extend over the entire width e of the locking web 3f or only a part of the full width e with respect to the width c extending parallel to the separating seam. A plurality of restraining branches 17a can be arranged in the width and / or lengthwise direction of the locking element 3a, for example two arresting limb pieces 17a for example the end portion 3b. Or on both edges of the web 3f (FIG. 4).

 The locking element 3a may be made of metal, in particular a corrosion resistant metal such as stainless steel or spring steel, or plastic. In all configurations, it is preferable to form the restraining portion 17a in one piece on the end portion 3b. This can be realized by injection molding when the locking element 3a is plastic and freely cut from the end portion 3b into free cuts 3h, respectively, for example, when the locking element 3a is metal. It can be implemented by bending the tongue to form the restraint portion 17a.

 The end portion 3b may be one section of the locking element 3a extending straight into the pocket 13. If the end portion 3b is formed into a waveform shape 18 according to the embodiment shown in Figs. 2 to 4, as shown in Figs. 3 and 4, the at least one restraint portion 17a is shown in Figs. It is preferable to place at one of the two angle branches 18a, 18b, for example at one of their vertex sites.

 In the presence of the restraint branch 17a, the end portion 3b is supported on the side facing the free end of the restraint branch 17a, for example, on the sidewall 13b facing the sidewall 13a of the pocket 13. It is important to be.

 If the trough housing 2 is an injection molded plastic part, for molding reasons, the side walls 13a and 13b facing each other need to be formed so as to slightly open toward the opening of the pocket 13. This gap is negligibly small and, therefore, the present description will no longer be described in detail with the automatically realized blocking effect of the restraint branch 17a.

 The embodiments according to FIGS. 5 and 6 show, by way of example, a plurality of restraining branches 17a arranged in one or in sequence, these being for example the full width e of the locking element 3a or the end portion 3b. Extends over. Such a configuration is particularly suitable for the locking element 3a made of plastic, wherein the restraining branches or branches 17a can be formed in one piece during the injection process.

 In the case of the embodiment according to FIG. 5, one or a plurality of restraining branches 17a, generally in the shape of a straightly extending web 3f, are provided, which press substantially flatly against the facing wall portion 13b, The tip has a narrow wedge-shaped cross section, for example. The effective length of the at least one branch 17a is thereby determined to be somewhat larger than the width c of the pocket 13 over the thickness of the web 3f, whereby in the inserted state, each restraint branch 17a ) Bends upwards elastically slightly outward and exerts the desired blocking effect due to the acupressure on the wall portion 13a, which is the wall portion 13a and the restraining branch 17a. The frictional contact between the ends of the is provided.

Similar configurations are also shown in FIGS. 7 and 8, with the difference that the at least one restraint branch 17a can, but need not be, be elastically pivoted inwards, which means that the restraint branch 17a is likewise It is preferably the case with the web 3f extending straight and connected by a thin film hinge 21. In the case of this configuration, the cross-sectional size in which both sides are enlarged toward the middle portion of the restraint branch 17a is such that the at least one restraint branch 17a is rotated at the time of detachment of the end portion 3b, thereby causing its eccentricity. Due to the conventional shape, the wall portion 13a is configured to produce a laterally clamping effect of the restraining branch 17a. As a result, the web 3f is pressed against the wall portion 13a facing and clamped.

 In the arrangements according to the invention, by securing the end portion 3b in the pocket 13, it is ensured to prevent unintentional detachment and loss of the locking element 3a. However, if it is desired to separate the end portion 3b, in the embodiment according to FIG. 2, the end portion 3b can be released from the pocket 13, for example by applying an increased traction force with a tool. have. In addition, in the case of the embodiment according to FIG. 3 and the following, it is advantageous to detach the end portion 3b from the pocket 13 by elastically bending the restraining branch or branches 17a, for example using a tool. It is possible.

 In the case of all embodiments, in order to cover each groove or pocket 13, it is advantageous to place the cover branch 3g at the foot portion of the end portion 3b or the web 3f in a protruding manner. Preferably, it will cover the pocket 13 in the inserted position.

Claims (17)

In the luminaire 1: A trough housing 2; A connection for the lamp 6, arranged inside; A transparent cover 4 covering the opening of the housing 2; And Spring locking elements 3a securing the cover 4 to the cover position, Each of the locking elements 3a engages in a pocket 13 in which an end part 3b is located in one of two parts consisting of the housing 2 and the cover 4, -The restraining branch 17a can stand up from the end portion 13b to the side, preferably pivoting inward against the elastic restoring force, The other end portion 3c of each of the locking elements 3a meshes to the rear of the other of the two parts, The restraining branch (17a) forms an obtuse angle W3 with the end portion (3b), and the angle is open toward the end of the end portion (3b). The method according to claim 1, The angle W3 is from about 92 ° to about 105 °. The method according to claim 1 or 2, The constraining branch (17a) has a pointed constraining edge (17b) extending in the longitudinal direction of the width (b) formed at the free end. The method according to any of the preceding claims, The restraining branch (17a) is a luminaire, characterized in that formed at the wedge shape, at least the free end portion is narrowed. The method according to any of the preceding claims, The restraining branch (17a) is a luminaire, characterized in that the section of the lowest portion is tapered, preferably in a film hinge manner. The method according to any of the preceding claims, A cross section of the restraining branch portion (17a) is convexly enlarged on both sides between the lowest portion and the free end. The method according to claim 6, The cross section of the restraint branch 17a is eccentric so that when the end portion 3b moves outward from the pocket 13 and the restraint branch 17a rotates, the restraint branch 17a is Due to the frictional contact with the opposing wall portion (13a), the cross section is enlarged and the end portion (3b) is pushed to the opposing wall portion (13b) of the pocket (13). The method according to any of the preceding claims, In the end portion 3b, a plurality of restraining branches 17a are disposed in the longitudinal direction of the end portion 3b and / or laterally of the end portion 3b, preferably the end portion. A luminaire, characterized in that it is arranged at the edge portion of the portion (3b). The method according to any of the preceding claims, The restraining branch or branches are formed to extend laterally of the end portion (3d) and preferably extend over the entire width of the end portion (3d). The method according to any of the preceding claims, The locking element (3a) is metal, and the restraining branch or branches (17a) are formed by partially cut and bent tongues. The method according to any one of claims 1 to 8, The luminaire, characterized in that the locking element (3a) with the at least one restraining branch (17a) is an injection molded part formed in one piece. The method according to any of the preceding claims, The end portion (3b) is characterized in that it has a shape that forms three acupressure points with the two wall portions (13a, 13b). In the luminaire 1, Trough housing (2), A connection for the lamp 6, arranged internally, A transparent cover 4 which can be arranged in the opening of the housing 2, Spring locking elements 3a for securing the cover 4 to the housing 2, Each of the locking elements 3a is engaged by means of an end part 3b into a groove 13 arranged in one of the two parts, namely the housing 2 and the cover 4, The end portion 3d is spring-pressed, forming a frictional contact with the two opposing wall portions of the groove 13, The other end portion 3c of the locking element 3a meshes to the rear of the other of the two parts, The end part (3b) is characterized in that it has a shape forming the two wall parts (13a, 13b) and three acupressure points. The method according to claim 12 or 13, The end portion 3b is arranged at an angle shape 18, the lowest positions 22a and 22c disposed at the wall portion 13, and the opposing wall portion 13b of the pocket 13 therebetween. A luminaire comprising a vertex (22b). The method according to claim 14, The shape (18) is formed by two branches (18a, 18b) that are bent in an angular manner with respect to the side, whereby the angle of inclination W2 is preferably an obtuse angle. The method according to any one of claims 12 to 15, The introduction branch (18c) is curved or inclined and is adjacent to the end side acupressure position among the three acupressure points. The method according to any one of claims 12 to 16, The shape (18) facing the side of the end region (3b) is directed towards the other end (3c) or the remaining longitudinal section (3e) of the locking element (3a).

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