JP2007134294A - Adapter apparatus for sideways lighting duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing device to maintain a sufficient earthquake-proof strength of a lighting duct fitted sideways. <P>SOLUTION: Reinforcing projected parts 3e are provided on two positions near a fixing part of a case 3 and an open mouth bent part 1b and a duct plug projected part 3e are hooked and held by two reinforcing metal fittings which are covered by a resin cover and connected, and loads from all directions are supported directly by the duct plug case 3 and loads on a fixing part and a connecting part are eliminated. A problem of an insertion into the lighting duct in parallel being made impossible can be solved by bending a connecting part 10c of the resin cover and shortening a distance. Furthermore, a number of open holes on the surface of the duct plug case is reduced to a minimum to make a formed shape which can keep a uniform surface frame and strength. For this purpose, a resin spring of a reversed U-shape extended from a rotation prevention frame is formed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is attached to a normal indoor ceiling and a lighting duct installed on a wall surface, and exhibits a load-proof reinforcement effect when a large lighting device or the like is suspended and installed on the ceiling. It is related with the structure and structure of an adapter and its reinforcement auxiliary | assistance aiming at maintaining the stable and firm attachment state with respect to the imbalance stress to each direction.

  The adapter for the lighting duct is called a so-called duct plug, and is mainly incorporated in a lighting fixture such as a spotlight, and is often used as a built-in fixture. Hereinafter, it is referred to as a duct plug. Spotlight-type luminaires must be able to adjust the direction of irradiation due to their nature, and a joint that is integrated with a suspension arm is attached to the lower part of the duct plug, enabling approximately 360 degrees of rotation and sliding. It is said.

  In recent years, there have been an increasing number of use cases in which a lighting duct is attached to a wall surface in a horizontal direction, and a hanging lighting fixture with a built-in duct plug is attached in a horizontal direction to illuminate a wall surface, a ceiling or the like. In this case, sufficient strength can be ensured in the lighting device, but an unexpected load is applied to the existing lighting duct and the mounting portion of the duct plug whose shape and size are limited. As a result, the positional relationship between the connecting portions is incorrect, and problems such as poor contact occur.

As measures against this, as shown in FIGS. 2 and 3, there is a structure in which a protrusion is provided above the duct plug, and the protrusion and the opening folded portion of the lighting duct are sandwiched between reinforcing aids, and a measure for improving the tensile strength is provided. (See Patent Document 1).
Japanese Patent Application No. 2005-236112 (FIGS. 2, 3, and 7)

  Hereinafter, a conventional lateral mounting structure will be described with reference to FIGS. FIG. 2 is a perspective view of the attachment structure to the lighting duct from obliquely rearward. FIG. 3 is a perspective external view from obliquely below showing an external appearance in actual use.

  The structure of FIGS. 2 and 3 is extremely effective when the lighting duct 1 is constructed in a direction unified with a predetermined mounting method. In the illustrated example attached to the wall surface, the polarity display convex rib 1f of the lighting duct 1 is set to be on the lower side. The purpose is to use the lower electrode, which may have a dust stack, as the ground electrode. At the time of sideways installation, it is obliged to attach the cover 4 to the opening of the lighting duct 1.

  However, when the lighting duct 1 is mounted upside down, the structure of FIGS. 2 and 3 is not effective. Furthermore, even when it is attached to an inclined ceiling or wall surface, an oblique force that induces instability acts on the reinforcing auxiliary tool 5 and the duct plug housing 3.

  Even when it is mounted in the normal direction, unstable and unbalanced stress can be generated even when it is subjected to instantaneous acceleration and repetitive vibration in an unspecified direction as in the case of an earthquake. These situations may not be common, but are not unrealistic and unexpected events. Although this is a rare case, uncertain factors remain in the conventional structure.

  The rotation prevention of the duct plug housing 3 at the time of horizontal installation plays an important role. This is because the lighting device mounted sideways is not always balanced with respect to the rotation axis of the duct plug. In the case of imbalance, a rotating force is always applied to the duct plug housing 3, and the rotating force is transmitted to the lighting duct 1 via the rotation stopper 8 and held.

  FIG. 4 shows an external perspective view of a housing having a conventional open hole 6e. The duct plug housing 3 is composed of a duct plug main body 6 and a duct plug lid 7, and includes protrusions 6a and 7a on the upper part of both and rotation mechanism housing parts 6b and 7b on the lower side. Similarly, the duct plug main body 6 and the duct plug lid 7 constituting the duct plug housing 3 are also subjected to a twisting force by receiving a rotational force. Since the surface opening portion of the casing component causes a lack of strength balance, it is desirable that the main body 6 and the lid 7 have a simple shape as much as possible. In the conventional example, the elongated slit hole 6f for providing the guide wall for positioning and sliding operation of the rotation stopper 8, the positioning pin 6g of the winding spring for generating the sliding repulsive force, and the sliding range are limited. An opening hole 6e is provided for providing a latching piece 6c for the purpose. These open holes 6e are generated from the necessity on the mold structure based on the mounting structure design of the built-in parts, and are desirably eliminated as much as possible.

  In view of the problem in the previous section, even if there is a problem with the mounting direction and angle of the lighting duct mounted sideways, it ensures stable mounting strength and also with respect to vibration amplitude in an unspecified direction that occurs in the event of an earthquake, etc. A duct plug and its reinforcement device that can be installed sideways, maintaining sufficient seismic strength, and can be used as a highly reliable load-proof and highly-reliable reinforcement structure when used for vertical suspension. The realization of

Means to solve the problem

  The present invention provides a lighting duct machine comprising two reinforcing metal fittings provided with reinforcing projections at two upper and lower positions in the vicinity of the mounting surface of the casing, and covered and connected with a resin cover when the duct plug is mounted sideways. By hooking and holding the folded portion for the general holding structure and the projection of the duct plug, the load load from each direction is directly supported by the duct plug housing, and the load on the mounting portion and the connecting portion is eliminated. .

  By using two reinforcing brackets, the problem of being unable to insert in parallel in the lighting duct is dealt with by reducing the interval by bending the connecting portion of the resin cover.

  In addition, an open hole for assembling the parts on the surface of the duct plug housing is eliminated as much as possible to obtain a molded shape that maintains a uniform surface skeleton and strength. As a means for this, it is possible to cope with the shape of a component having a composite function by making the best use of the basic physical properties of a rotation-stop molding material that prevents the rotation of the casing that is the target component. Specifically, taking advantage of the basic characteristics of PC (polycarbonate resin), an inverted U-shaped resin spring extending from the anti-rotation body is formed, and a resin spring portion is inserted in a compressed state from a square hole provided in the housing. Then, the tip is hooked to the lower part of the square hole inside the casing to prevent it from coming off.

The invention's effect

  The greatest effect of the present invention is that the reinforcing metal fittings can be installed symmetrically vertically and horizontally. As a result, loads from unspecified directions can always be handled. Lateral mounting has become one of those mounting configurations. Reliability is not impaired with respect to the above-described problems during the horizontal installation.

  Furthermore, since it has a symmetric structure, it can be used as a reinforcing measure for hanging installation for relatively heavy HID devices. On the other hand, light and small instruments can be used in the same hanging form as before without a reinforcing device.

  An important effect is that the use of the duct plug of the present invention can provide a dual-type instrument for both hanging and lateral mounting. When mounting in landscape orientation, it is only necessary to add a reinforcement device for landscape orientation, and there is no need to prepare a dedicated instrument and unnecessarily increase the number of managed models.

  In terms of workability, the construction of the duct cover becomes extremely easy. The reinforcement device can be pre-constructed simultaneously with the installation of the duct cover and does not require tools. Further, even after the attachment, until the luminaire main body is attached, the attachment position can be adjusted by freely moving on the lighting duct.

  By making the side surface of the resin cover 10 of the reinforcing device vertical, the length of the duct cover can be adjusted only by right-angle cutting as before, and the cutting process can be greatly simplified. Further, since the long and short covers can be combined by vertical cutting, the end material can be effectively used and the position can be changed later.

  The new built-in structure of the housing 3 rotation stopper 8 effectively presses down the assembly nut 11, eliminates the need for a coil spring that is difficult to handle, reduces management man-hours and assembly man-hours, and reduces costs. I can do things.

  The present invention supports a lamp housing portion with a lighting arm that is attached to a lighting duct 1 having an opening mounted on a wall surface in a horizontal direction using a built-in duct plug and extended in a certain horizontal distance direction. The best embodiment is to apply mainly to a lighting device that irradiates a wall surface or a ceiling surface.

  The mounting method and the shape of the duct plug in the present invention are generally limited to a generally cylindrical shape in which the entire duct plug housing 3 is rotated and attached by 90 degrees because of its structure.

  This description is based on the shape of the conductor and insulator in the lighting duct 1, the hook claw of the duct plug, the contact piece in the housing 3, the terminal for connecting the wiring in the appliance, Although the combination structure with the lamp arm 2 is not described, the present invention can be applied regardless of the structure.

  Further, the connection structure such as the in-instrument wiring may be a simple quick-connection structure or a screw tightening terminal as in this example. The reason is that, due to the structure of the present invention, a load is applied only to the outer wall via the protrusion 3e of the duct plug housing 3, and a load is applied to the connecting parts of the hooking claw 3a and the contact piece 3d as in the past. Because there is no.

  FIG. 1 is a perspective external view of the duct plug and the reinforcing device according to the present invention, as viewed from an oblique rear side. FIG. 5 is a perspective external view of the duct plug and the reinforcing device according to the present invention as viewed from the front obliquely below in a state where the duct plug and the reinforcing device are attached to the lighting duct. FIG. 6 is a perspective view of the reinforcing device showing the assembly structure of the resin cover 10 and the reinforcing metal fitting 9. Hereinafter, description will be made with reference to the drawings.

  In the present invention, two reinforcing metal fittings 9 are used in order to hook the lighting duct mounting surface lower end 1a and the protrusions 3e provided at two places on the upper part of the duct plug housing 3 to each other and draw them together. The two reinforcing metal fittings are covered with a soft resin cover 10 for the purpose of maintaining the appearance of the outer surface and for holding and connecting each other. The reinforcing metal fitting 9 is housed in the cover 10 with a three-dimensional shape of the cover 10 and fixing claws 10a and 10b partially provided.

  The reinforcing bracket 9 includes an upper frame 9a and a lower frame 9e that are formed by drawing bending, and a hook portion 9b on which a protrusion 3e provided on the duct plug housing 3 is hooked. The frame arm portion 9c that has escaped to the outside in order to avoid contact with the protruding portion 3e that rotates at the time of attachment is reinforced by bending the end portion in order to enhance rigidity. The bent end portion 9f is hooked and fixed on the claw 10a of the resin cover 10. Further, a large claw 9d is provided at the tip of the frame arm portion 9c to be caught by the opening folded portion 1b of the lighting duct 1.

  However, the use of the two reinforcing metal fittings 9 makes it impossible to insert the large claws 9d at both ends of the reinforcing metal fittings 9 into the opening folded portion 1b of the lighting duct 1. This is because the conventional method of inserting the large claws 9d of the reinforcing metal piece 9 in an oblique direction cannot be adopted. Furthermore, both the reinforcing metal fittings 9 need to be fitted to the lighting duct 1 almost simultaneously. As a countermeasure, self hinge portions 10d and 10e are formed by thin molding of a soft resin at three locations of the connecting portion 10c of the reinforcing metal cover 10, and are configured to be bent and movable downward.

FIG. 7 is a perspective view showing a state in which the connecting portion 10c is bent and the insertion interval is shortened.
In order to incorporate the reinforcing bracket 9 into the lighting duct 1, first, the connecting portion 10 c at the center of the resin cover 10 is pushed downward and bent. It is pressed from both sides to shrink it, and the interval between the large claws 9 d of the reinforcing metal fitting 9 is shortened and inserted into the lighting duct 1. At this time, the stoppers 10f are provided at both ends so as not to be inadvertently inserted and contact with the conductor 1d of the lighting duct 1.

  After the insertion, the connecting portion 10c expanded by the repulsive force of the resin is pushed further upward with a fingertip to reverse the connecting portion 10c, whereby temporary fixing can be performed. This temporary fixing structure facilitates the attachment to the lighting duct 1 and the insertion of the duct plug housing 3, and the attachment of the duct plug to the reinforcing device is automatically performed in the same manner as the normal attachment without any special work. Done.

  The connecting portion 10c of the attached resin cover 10 is straight and substantially horizontal in both ends to ensure continuity with the duct cover 4. Thereby, the cutting operation of the duct cover 4 at the time of length adjustment is facilitated as in the prior art.

  The open hole 6e generated on the surface of the conventional duct plug body 6 is generated in order to form a guide wall for sliding operation of the rotation stopper 8 and a sliding restriction wall. In some cases, there were even those related to storage of the sliding spring.

In the present invention, attention is paid to the physical properties of the resin material for molding the rotation stopper 8, and it is possible to cope with the minimum mounting holes by utilizing the characteristics.
FIG. 8 is an external perspective view showing the structure of the duct plug body according to the present invention. FIG. 9 is a cross-sectional view showing an assembled state of the rotation stopper 8. FIG. 10 is an exploded cross-sectional view showing a structure for incorporating a rotation stopper.

  PC (polycarbonate) generally used for duct plug housings has tough strength and fatigue resistance and is excellent in creep resistance by being molded under appropriate conditions. Taking advantage of these characteristics, an inverted U-shaped arm is extended from the rotation stop main body 8 to form a resin spring portion 8a, and its tip 8b is dropped into a support point 6h provided on the duct plug main body 6. The mounting to the housing is provided with a square hole 6j that allows the resin spring portion 8a to be compressed and passed during mounting. The resin spring portion 8a that has passed through the square hole 6j expands outward, and the tip 8b is accommodated at a support point 6h that is substantially a quarter circle. The support point 6h functions as a retaining member, and a repulsive force is secured by the resin spring portion 8a. Yield strength to the left and right is ensured by the amount of the rotation stopper 8 dropped into the duct plug body 6 and the resin spring portion 8a penetrating the square hole 6j.

    It is the perspective view which carried out the partial cross section from diagonally backward which shows the horizontal mounting structure by this invention.     It is the perspective view which carried out the partial cross section from diagonally backward which shows the conventional horizontal mounting structure.     It is an external appearance perspective view from diagonally forward lower side which shows the attachment state of the conventional sideways attachment structure.     Conventional duct plug     It is a perspective appearance figure from the slanting bottom which shows the mounting appearance of the duct plug by this invention.     It is a perspective appearance figure showing the combination structure of the reinforcement metal fitting and resin cover by the present invention.     It is a perspective appearance figure which shows the state which shortened the connection part of the resin cover by this invention.     It is a perspective appearance figure showing an example of installation of a side opening hole of a case by the present invention.     It is the perspective view which carried out the partial cross section which shows the attachment state of the rotation stopper by this invention.     It is the disassembled perspective view which carried out the partial cross section which shows the attachment structure of the rotation stopper by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting duct 1a Mounting surface lower end 1b Open-back part 1c Upper edge 1d Conductor 1e Insulator 1f Polarity display convex rib 2 Lamp body arm 3 Duct plug housing 3a Hook claw 3b Upper hook claw 3c Housing lower end 3d Contact piece 3e Projection part 4 Duct cover 5 Reinforcement auxiliary tool 5a Upper frame 5b Hook part 5c Frame arm part 5d Large claw 5e Mounting base part 5f Small claw 5j Vertical straight part 6 Duct plug main body 6a Projection 6b Rotating mechanism storage part 6c Latching piece 6d Nut Hole 6e Open hole 6f Slit hole 6g Winding spring fixing pin 6h Resin spring support point 6j Resin spring square hole 7 Duct plug lid 7a Protrusion 7b Rotation mechanism housing 8 Rotation stop 8a Resin spring 8b Resin spring tip 9 Reinforcing bracket 9a Upper frame 9b Hook 9c Frame arm 9d Large claw 9e Lower frame 9 Bent end portion 10 resin cover 10a for fixing both end claw 10b fixing the central claw 10c connecting portion 10d center self hinge portion 10e on both sides self hinge portion 10f stopper

Claims (3)

  A hook provided on a part of the outer wall of the duct plug housing that is used in combination with a lighting duct that is mounted on a wall surface or the like with the mounting surface facing sideways, and that is the uppermost part in proximity to the lighting duct in actual use. In the adapter for built-in lighting fixtures that can be mounted horizontally, and has a reinforcing structure that pulls the folded-up opening on the upper side of the lighting duct and pulls it close together, avoiding the height of the polarity display rib from the mounting surface of the lighting duct Two reinforcing brackets with self-hinging effect, provided with symmetrical projections on the top and bottom of the duct plug outer wall at the position, and with a bilaterally symmetric shape that fits with it and hooks on the tip of the lighting duct opening folded part Cover and fix the outline of the exposed part with a cover made of soft resin, symmetrical in front and rear, left and right, and connect and connect That the left and right of the central portion by comprising forming a hinge structure of three or more locations, characterized in that also exerts a reinforcing effect upon use hanging and mounting reinforcement device.   There are barriers to prevent over-insertion at four locations on the extreme end that touch the lighting duct mounting surface when actually using the soft resin cover, with the maximum dimension set inside the ribs for polarity indication. 2. The attachment reinforcing device according to claim 1, wherein a side shape including the connecting portion is a right angle and a linear shape with respect to the lighting duct.   In the anti-rotation device that enters the opening of the lighting duct after installation and prevents inadvertent rotation of the duct plug housing, an inverted U-shaped resin spring that extends from the anti-rotation body taking advantage of the basic characteristics of the molding material The surface of the duct plug housing is opened by forming the resin spring part in a compressed state from the square hole provided in the housing and retaining the tip by hooking the tip of the resin spring portion under the square hole inside the housing. The duct plug according to claim 1, wherein holes are eliminated as much as possible to maintain a uniform surface skeleton and strength.

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