JPH0334003Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to lighting equipment, and relates to a structure for attaching and detaching a cover frame attached to the equipment body.

(Prior art) Conventionally, lighting fixtures in which a cover frame is attached to and detached from the fixture body by engagement of hooking claws are
The structure described in Japanese Patent No. 55-36587 is known.

As shown in FIGS. 6 and 7, the structure of this lighting device is that it has a substantially U-shaped cross section with a shade 2 on the lower surface, located on the outer periphery of a device body 1 whose outer periphery is bent downward. A cover frame 3 is removably attached. A receiving frame 4 is attached to the cover frame 3 so as to face the inner surface of the cover frame 3, and on the inner surface of the receiving frame 4, both ends are bent toward the inner side of the cover frame 3 and the tip thereof is tapered. A guide piece 5 formed in an inclined shape and a guide fitting 7 having a stepped portion 6 are fixed to the base of the guide piece 5. This cover frame 3,
The receiving frame 4 and the guide fitting 7 are provided with insertion holes 3a, 4a, and 7a, respectively, which have approximately the same diameter and the same center axis, and each of the insertion holes 3a, 4a, and 7a have approximately the same diameter and the same center axis.
An operating shaft 10 is slidably disposed and is biased outwardly of the cover frame 3 by a spring body 9 disposed between the cover frame 3 and the receiving frame 4.
A hooking member 11 is attached to the threaded portion 10a at the inner tip of the screw. This hooking member 11 has a threaded portion 10a of the operation shaft 10 inserted into the center thereof and a nut 12.
A support hole 13 is provided, which is fixed by screwing.
Further, a vertically elongated guide hole 14 with which the guide piece 5 of the guide fitting 7 is engaged is provided at both edges, and the inside position of the guide hole 14 has an inclined upper surface and an inclined lower surface that protrudes toward the guide fitting 7. Horizontally provided hooking claws 15 are respectively provided in a protruding manner.

In addition, the guide fitting 7 of the cover frame 3 of the instrument body 1
A receiving metal fitting 16 is vertically provided on the bottom surface corresponding to the hooking member 11, and at the lower end of this receiving metal fitting 16, an introduction part 17 inclined toward the outside of the cover frame 3 and a hooking claw of the hanging member 11 are provided. 15 is provided with a vertically elongated receiving hole 18 into which it engages.

Then, by pushing up the cover frame 3 from below with respect to the instrument body 1 and engaging the hook 15 of the hook member 11 with the receiving hole 18 of the receiving metal fitting 16,
The cover frame 3 is attached to the instrument body 1, and by pushing the operating shaft 10, the hook 15 of the hook member 11 comes off the receiving hole 18 of the receiving fitting 16, and the cover frame 3 is removed from the instrument body 1. Can be removed.

(Problem to be solved by the invention) When the operating shaft 10 is pushed and operated when removing the cover frame 3 from the instrument body, the guide hole 14 of the hook member 11 slides along the guide piece 5 of the guide fitting 7. However, the operation shaft 10 and each insertion hole 3a, 4a,
7a, the hook member 11 is tilted horizontally with respect to the guide fitting 7 with the connection part with the operation shaft 10 as the fulcrum A, as shown in FIG. The claw 15 is the receiving metal fitting 1
6 is in the release position far removed from the receiving hole 18 of the receiving metal fitting 16, but the other hooking claw 15 is located far away from the receiving hole 18 of the receiving metal fitting 16.
The cover frame 3 is not completely removed from the device body 8 and remains stuck, and therefore, the cover frame 3 may not be removed from the instrument body 1.

Therefore, it may be possible to lengthen the guide piece 5 of the guide fitting 7 so that the hooking member 11 can sufficiently escape from the receiving fitting 16, but the guide piece 5, the hooking member 11, etc. protrude greatly inside the cover frame 3. This poses a problem in that the instrument is not only dangerous to handle, but also increases in size.

Furthermore, if an inadvertent downward pressing force is applied to the cover frame 3, the cover frame 3 may tilt outward, and the slope of the lower surface of the guide piece 5 of the guide fitting 7 may become closer to the vertical direction. At the same time, the hooking member 11 tilts inward, and the force of the lower surface of the guide piece 5 pushing against the lower edge of the guide hole 14 of the hooking member 11 increases, so that the hooking member 11 tilts inward and the force of the lower surface of the guide piece 5 pushing against the lower edge of the guide hole 14 of the hooking member 11 increases. There was a possibility that the member 11 would be pushed away from the receiving fitting 16, the hooking claw 15 of the hooking member 11 would come off the receiving fitting 16, and the cover frame 3 would fall off, resulting in a safety problem.

The present invention has been developed in view of the above-mentioned points, and it is possible to reliably remove the cover frame from the device body, and even if an inadvertent downward pressing force is applied to the cover frame, the receiving metal fitting can be easily removed. It is an object of the present invention to provide a lighting fixture that can ensure safety by preventing the hooking claw of the hooking member from coming off from the receiving hole.

[Structure of the idea]

(Means for Solving the Problems) The present invention consists of a device body having a receiving metal fitting, a cover frame disposed on the outer periphery of the device body, and a pair of guides arranged oppositely on the inner surface of the cover frame. A guide fitting having a slot is slidably inserted through the cover frame and the guide fitting, and an operating shaft biased outwardly of the cover frame by a spring body is inserted through the guide fitting of this operating shaft. It has guide pieces attached to the ends, protruding from both ends toward the guide metal fittings, and slidably engaging with the guide slots, and protruding toward the guide metal fittings and engaging with the receiving metal fittings. A hooking member having a hooking claw,
Each guide piece of the hooking member is provided with a locking portion that comes into contact with the edge of the guide slot and restricts the sliding of each guide piece in the direction away from the guide fitting, and this locking portion A concave portion is provided at the base of the guide slot on the side that abuts the edge of the guide slot, and an inclined portion is provided between the base of the locking portion and the edge of the guide piece.

(Function) In the present invention, even if the hooking member is horizontally inclined with respect to the side surface of the guide fitting when operating the operating shaft, the locking part of one guide piece is attached to the edge of one guide slot. Since the hook member contacts and restricts further sliding movement, the hook member rotates using one of the locking parts as a fulcrum, and then the locking part of the other guide piece moves into the other guide slot. with both locking parts in contact with the edge of the guide slot,
The hooking member is always placed in a position parallel to the guide fitting, and each hooking pawl can be removed from the receiving fitting.

In addition, since a guide piece is provided on the hook member,
If an inadvertent downward pressure is applied to the cover frame and the hook member tilts inward, the upper surface of the guide piece will tilt in a direction that brings the hook member closer to the guide fitting, and the guide piece will become more difficult to guide. It does not come off the guide slot of the metal fittings, ensuring safety.

Moreover, even if the guide piece has a structure in which the locking part is provided, the locking part is engaged with the guide slot, and the recess at the base of the locking part is engaged with the edge of the guide slot. By rotating the hooking member around the engaging portion and moving it toward the guide fitting, the inclined portion guides and slides along the edge of the guide slot, making assembly easy.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 4, reference numeral 20 denotes a device body whose outer peripheral edge 21 is bent downward.Lighting parts such as a discharge lamp and a lamp socket are attached to the lower surface of this device body 20, and the device body A cover frame 23 having a substantially U-shaped cross section and having a shade cover 22 on the lower surface that surrounds the lighting components etc. is removably attached to the outer periphery of the cover frame 20 . The insertion holes 24 are respectively formed as openings.

The upper surface of the stepped portion 25 provided on the inner peripheral edge of the cover frame 23 is provided with the outer peripheral edge 21 of the instrument main body 20.
A gasket 26 is attached to the lower surface of the stepped portion 25 and is attached to the insertion hole 24 of the cover frame 23.
A substantially L-shaped guide fitting 27 disposed opposite to the inner surface of the position is attached with fixing screws 28, 28. In the center of this guide fitting 27,
An insertion hole 29 having the same central axis as the insertion hole 24 of the cover frame 23 is formed, and guide slots 30, 30 in the form of vertical grooves are formed near both edges.
is formed.

An operation shaft 31 is slidably disposed in the insertion holes 24 and 29 of the cover frame 23 and the guide metal fitting 27, and the operation shaft 31 has a large diameter operation portion protruding from the outer surface of the cover frame 23 at one end. 32 is provided, and a small-diameter threaded portion 33 is provided protruding from the other end, and the operating portion 32 of the operating shaft 31 and the guide fitting 2
The operating shaft 31 is biased toward the outside of the cover frame 23 by a spring body 34 disposed between the cover frame 23 and the cover frame 23 .

A hook member 35 is attached to the threaded portion 33 at the inner tip of the operating shaft 31.
consists of a base plate 36 to which the operating shaft 31 is attached, and guide pieces 37, 37 that are bent from both edges of the base plate 36 at a substantially right angle in the direction of the guide fitting 27 and slidably engage the guide slot 30. It is formed in a roughly U-shape. This board 36 has an operating shaft 3 in the center.
A mounting hole 39 is formed through which the threaded portion 33 of No. 1 is inserted and is coupled and fixed to the operating shaft 31 by mounting an E-shaped retaining ring 38 . Hooking claws 42, 42 are provided with hooking surfaces 41 whose lower surfaces are horizontal on an inclined surface 40 that is bent and whose upper surface slopes downward, and the guide pieces 37, 37 are provided with guides at the upper and lower portions of the intermediate portions. A regulating step portion 4 that comes into contact with the upper and lower edges of the slot 30 and restricts the movement of the hook member 35 in the direction of the guide fitting 27
3 is provided, and a locking portion 44 that is engaged in the guide slot 30 and comes into contact with the lower edge facing the cover frame 23 is provided at the lower part of the tip and protrudes downward, and this locking portion 44 An inclined portion 45 is provided that slopes downward toward the substrate 36 from the base of the locking portion 44 , and a recess 46 is formed between the base of the locking portion 44 and the bottom of the guide piece 37 .

Further, a receiving metal fitting 51 is vertically attached to the bottom surface of the instrument body 20 corresponding to the guide metal fitting 27 and the hooking member 35, and this receiving metal fitting 51 has an introduction piece inclined toward the outside of the cover frame 23 at the lower end. 5
2 is provided, and a cutout groove 53 that allows the operating shaft 31 to move is also provided, and hooking claws 4 of the hooking member 35 are provided at both sides of the notch groove 53.
Receiving holes 54, 54 into which the screws 2, 42 are inserted are provided.

Next, the operation of this embodiment will be explained.

For example, in order to attach the cover frame 23 to the appliance body 20 attached to the ceiling surface,
When the hook member 35 is aligned with the receiving metal fitting 51 and the cover frame 23 is pushed up, the introduction piece 52 of the receiving metal fitting 51 is pushed up.
The inclined surface 40 of the hooking pawl 42 slides along the spring body 3 on which the hooking member 35 is attached to the operating shaft 31.
4 and slides inward of the cover frame 23 along the guide slot 30 of the guide fitting 27. Then, by pushing up further, the hook member 35
The hooking claw 42 engages in the receiving hole 54 of the receiving metal fitting 51, and in the state where the hooking claw 42 is caught in the receiving hole 54, the hooking member 35 and the operating shaft 31 are moved to the spring body 3.
4 urges the cover frame 23 outward.

Moreover, in order to remove the cover frame 23 from the instrument main body 20, as shown in FIGS. 3 and 4, by pushing the operating shaft 31 against the spring body 34,
The hooking claw 42 of the hooking member 35 comes off from the receiving hole 54 of the receiving metal fitting 51, and by lowering the cover frame 23, the cover frame 23 is removed from the instrument main body 20.
can be removed.

Note that when the cover frame 23 is removed by pushing the operation shaft 31, the hook member 35 is not connected to the operation shaft 31 due to the insertion allowance between the operation shaft 31, the cover frame 23, and the insertion holes 24, 29 of the guide fitting 27, etc. The connecting portion is used as a fulcrum to tilt horizontally to the side surface of the guide fitting 27. In this case, first, the hooking member 3
5 comes into contact with the edge of the guide slot 30 and prevents further sliding movement.
The hooking member 35 rotates about one of the locking portions 44 as a fulcrum, and then the other locking portion 44 abuts the edge of the guide slot 30, and both locking portions 44, 44 are connected to the guide slot. Since the hooking member 35 is always in a position parallel to the guide metal fitting 27 when in contact with the edges of the hooking members 30 and 30, each hooking claw 4 of the hooking member 35
2 and 42 are in release positions where they are removed from the receiving holes 54 and 54 of the receiving metal fitting 51, respectively.

Furthermore, if an inadvertent downward pressing force is applied to the cover frame 23 when the cover frame 23 is attached, for example, the hook member 35 may be moved around the contact point between the hook piece 42 and the lower edge of the receiving hole 54 is tilted inward, but the upper surface of the guide piece 37 is also tilted in a direction that brings the hook member 35 closer to the guide fitting 27, so the guide piece 37 does not come off from the guide slot 30, and safety is ensured. ing.

Moreover, when assembling the hook member 35 to the guide fitting 27, the locking part 44 is engaged with the guide slot 30, the recess 46 is engaged with the lower edge of the guide slot 30, and this engagement part is centered. By pushing the hook member 35 in the direction of the guide fitting 27 while rotating it, the inclined part 45 guides and slides the edge of the guide slot 30, making it easy to assemble.

[Effect of idea]

According to the present invention, each guide piece of the hook member is provided with a locking portion that comes into contact with the edge of the guide slot and restricts the sliding of each guide piece in the direction away from the guide fitting. Therefore, even if the hook member tilts horizontally with respect to the side surface of the guide fitting using the connecting part with the operating shaft as a fulcrum due to the operation of the operating shaft when removing the cover frame from the instrument body, one guide piece Since the locking part comes into contact with the edge of one of the guide slots and further sliding movement is restricted, the hook member rotates about one of the locking parts as a fulcrum, and then moves to the other guide slot. The locking part of one piece is in contact with the edge of the guide slot on the other side, and with both locking parts in contact with the edge of the guide slot, the hook member is always in a position parallel to the guide fitting. to be placed;
Each of the hooks of the hook member is in a release position where it is removed from the receiving metal fitting, so that the cover frame can be reliably removed from the instrument body.

In addition, since a guide piece is provided on the hook member,
If an inadvertent downward pressure is applied to the cover frame and the hook member tilts inward, the upper surface of the guide piece will tilt in a direction that brings the hook member closer to the guide fitting, and the guide piece will become more difficult to guide. It does not fall out of the guide slot of the metal fitting, ensuring safety.

Moreover, even if the guide piece has a structure in which the locking part is provided, since the base of the locking part has a concave part and an inclined part, the locking part can be inserted into the guide slot and the locking part can be closed. By engaging the concave portion of the base with the edge of the guide slot, and moving the hook member toward the guide fitting while rotating the hook member around this engagement portion, the inclined portion will guide the edge of the guide slot. can be moved and assembled,
Assembly and other manufacturing of such frame mounting fittings can also be facilitated.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the lighting device of the present invention, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a longitudinal sectional view showing its operating state, and Fig. 4 is a plan view thereof.
Fig. 5 is a perspective view showing the entire lighting equipment, Fig. 6 is an exploded perspective view showing a conventional lighting equipment, Fig. 7 is a longitudinal sectional view thereof, and Fig. 8 is a plan view of the main parts showing its operating state. It is. 20... Instrument body, 23... Cover frame, 27...
... Guide metal fitting, 30 ... Guide slot, 31 ... Operation shaft, 34 ... Spring body, 35 ... Hooking member, 37
. . . Guide piece, 42 . . . Hook claw, 44 . . . Locking portion, 45 .

Claims (1)

[Scope of Claim for Utility Model Registration] A device body having a receiving metal fitting, a cover frame disposed on the outer periphery of the device body, and a guide having a pair of guide slots arranged opposite to each other on the inner surface of the cover frame. a metal fitting; an operating shaft that is slidably inserted through the cover frame and the guide fitting and is biased outwardly of the cover frame by a spring; and an operating shaft that is attached to the end of the operating shaft through which the guide fitting is inserted; A hooking member having guide pieces protruding from both ends toward the guide fitting and slidably engaging with the guide slot, and a hooking claw protruding toward the guide fitting and engaging with the receiving fitting. and each guide piece of the hooking member is provided with a locking part that comes into contact with the edge of the guide slot and restricts the sliding of each guide piece in the direction away from the guide fitting. , a lighting device characterized in that a concave portion is provided at the base of the locking portion on the side that abuts the edge of the guide slot, and an inclined portion is provided between the base of the locking portion and the edge of the guide piece. utensils.