JP2620682B2 - Recessed lighting fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an embedded lighting device which is mounted in a hole formed in a ceiling.

[0002]

2. Description of the Related Art Conventionally, a luminaire of a buried type which is mounted in a perforated hole formed in a ceiling has conventionally been composed of a pair of plate-like elastic pieces a as shown in FIGS. 15A and 15B. The base end side is attached to the outer wall of the main body part b, and the tip end side is extended from the base end part to the main body part b to an obliquely outward side of the main body part b, and the pair of elastic pieces a, a are attached. By inserting the main body part b into the perforated hole T1 perforated in the ceiling T, the side surfaces of the elastic pieces a, a press the inner peripheral wall T2 of the perforated hole T1. It is designed to be mounted on the ceiling T. In the drawings, c indicates a socket, and d indicates a light bulb. However, the elastic pieces a, a
Is larger than the inner diameter of the drilled hole T1.
When the main body part b is inserted into the perforated hole T1 formed in the ceiling T, the distal ends of the elastic pieces a and a are simultaneously bent by hand toward the main body part b against the elastic force of the elastic piece a. No, you must enter in that state. Further, since the main body portion b is attached to the ceiling T by the elastic force of the elastic piece a, a considerable force is required to bend inward against the elastic force of the elastic piece a by hand, which is very difficult. There is a problem that it requires a great deal of labor and the installation work is difficult. In particular, when the number of the elastic pieces a becomes three or more, it is difficult to simultaneously bend the respective elastic pieces a inward by hand.

[0003] Therefore, a solution to this problem has been proposed, for example, in Japanese Utility Model Laid-Open No. 62-4018. As shown in FIGS. 16A and 16B, a pair of plate-like elastic pieces a and a base end of each of the elastic pieces a are attached to an outer wall of the main body b by a pin e.
And an operation part a2 bent outward from the main body part b is provided at the base end, and a locking piece a3 is provided at the distal end of each of the elastic pieces a and a. The piece a3 is inserted and locked in the locking hole b1 formed in the outer wall of the main body b, and the main body b is formed in the perforated hole T1 of the ceiling T.
When the operation part a2 is put into the inside of the ceiling T, the operation part a2 is rotated by the lower surface of the ceiling T, whereby the locking piece a3 of the elastic piece a is rotated to make the locking hole b1. So that it comes off from the narrow portion b2 of
The main body part b can be inserted into the perforated hole T1 of the ceiling T without manually bending the distal ends of the elastic pieces a and a inward against the elastic force of the elastic piece a. Things.
However, when the main body part b is inserted into the perforated hole T1 of the ceiling T, the operation part a is merely pushed up.
2 cannot be rotated, the operation unit a2 must be rotated by the lower surface of the ceiling T so that the main unit b is tilted. Moreover, finally, the main body part b is formed with the hole T in the ceiling T.
In the state where the elastic pieces a and a are mounted in the hole 1, the operation parts a2 and a2 of the elastic pieces a must also be provided in the perforated hole T1, so that a pair of operation parts a2 and a2 as shown in FIG. Must be smaller than the inner diameter L of the drilled hole T1 so that the gap t can be inserted into the drilled hole T1. As a result, when each of the operation units a2 and a2 is pressed against the lower surface of the ceiling T, the main unit b is biased to one side in the drilled hole T1 so that one operation unit a2 is pressed against the lower surface of the ceiling T. ,afterwards,
The main body part b is biased to the other side in the drilled hole T1 so that the other operation part a2 is brought into contact with the lower surface of the ceiling T, and the locking hole b1,
The operation for releasing the locking of each of the b1 must be sequentially performed. In particular, when the number of the elastic pieces a becomes three or more, it takes time, and the operation becomes troublesome.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and provides an embedded lighting fixture which can be mounted on a ceiling simply by inserting a main body into a hole formed in the ceiling. The first purpose is to do so. The invention of the present application also includes a steeply inclined portion extending obliquely upward in the outward direction of the main body portion, and a gentle incline bent at a predetermined angle outward from the steeply inclined portion toward the distal end of the steeply inclined portion. Part and the elastic piece, and even when the ceiling is thick, by making the gentle slope abut against the inner peripheral wall of the perforated hole in the ceiling,
It is a second object of the present invention to provide an embedded lighting device in which the entire lighting device is unlikely to slide down from a perforation hole in a ceiling.

[0005]

Means for Solving the Problems A flexible elastic piece 2... 2 having a base end side attached to a side wall 5 of the main body 1 and a front end side extending obliquely upward to the outside of the main body 1 is provided. The plurality of elastic pieces 2... 2 are provided with a plurality of main bodies 1 in a perforated hole T1 formed in a ceiling T to form a perforated hole T.
The present invention provides an embedded lighting fixture which presses the inner peripheral wall T2 of the main body 1 and attaches the main body 1 to the ceiling T by the pressing force of the elastic pieces 2... Solves the above problem. In the first invention of the present application, a locking portion 92 which can be removably locked to the main body 1 and a locking release means are provided on the distal end side of each of the elastic pieces 2. The locking portion 92 is locked to the wall surface 5 of the main body 1, so that the elastic piece 2 bends between the locking portion 92 of the elastic piece 2 and the base end 8 attached to the main body 1 due to bending of the elastic piece 2. The part 10 is formed. Further, since the curved portion 10 is provided so as to protrude outward from the main body 1, a hole T formed in the ceiling T is formed.
As the main body 1 is inserted into the main body 1, each of the curved portions 10, 10 comes into contact with the inner peripheral wall T <b> 2 of the perforated hole T <b> 1 and is pressed inward of the main body 1. When the main body 1 is inserted into the perforated hole T1 of the ceiling T1, the inner peripheral wall T2 of the perforated hole T1 presses each of the curved portions 10, 10 when the main body 1 is inserted into the perforated hole T1. And release the lock.

The second invention of the present application comprises a steeply inclined portion 9a extending obliquely upward and outward of the main body portion 1 at the distal end of each of the elastic pieces 2... On the tip side of the inclined portion 9a, there is provided a gentle inclined portion 9b formed by bending the steep inclined portion 9a outwardly of the main body 1 at a predetermined angle A. Further, a locking portion 92 is provided on the gentle slope portion 9b. The locking portion 92 is locked to the side wall 5 of the main body 1, so that the steeply inclined portion 9 a is bent to form a curved portion 10 protruding outward from the main body 1, and the gentlely inclined portion 9 is formed.
b is extended in the vertical direction. When the curved portion 10 is pressed, the locking portion 92 is pushed upward.

The third invention of the present application is directed to a steep slope portion 9a extending obliquely upward and outward of the main body portion 1 at the distal end side of each of the elastic pieces 2... On the tip side of the inclined portion 9a, there is provided a gentle inclined portion 9b formed by bending the steep inclined portion 9a outwardly of the main body 1 at a predetermined angle A. In addition, the gentle inclined portion 9b is provided with a convex portion 93 protruding in the direction of the main body portion 1 and a locking portion 92 on the tip side of the convex portion 93. The locking portion 92 is formed by a part 5 of the side wall 5 of the main body 1.
2c is locked by being pressed from the inside to the outside of the main body 1 and unlocked by being pressed from the outside of the main body 1 to the inside.
2 is locked to the side wall 5 of the main body 1 so that the protrusion 9
3 comes into contact with the side wall 5 of the main body 1 and the steeply inclined portion 9
a is bent so as to protrude outward from the main body 1
Is formed. When the curved portion (10) is pressed, the locking portion (92) is moved to the main body portion.
(1) It is designed to receive a force from the inside to the outside.

[0008]

According to the first aspect of the present invention, the locking portion 92 of the elastic piece 2 is locked to the wall surface 5 of the main body 1 so that the locking portion 92 of the elastic piece 2 and the base end of attachment to the main body 1 are provided. A curved portion 10 formed by bending of the elastic piece 2 is formed between the main body portion 1 and the curved portion 10. The inner peripheral wall T2 of the perforated hole T1 comes into contact with each of the curved portions 10 and 10 as the
0 and 10 can be pressed inward of the main body 1.
On the other hand, the locking release means can release the locking between the locking portion 92 and the main body 1 by pressing the bending portion 10 inward of the main body 10. By doing so, when the main body 1 is inserted into the perforated hole T1 of the ceiling T in a state where the locking portions 92 of each of the elastic pieces 2 are locked on the wall surface 5 of the main body 1 as shown in FIG. Curved portion 1 formed on each of elastic pieces 2 and 2
0, 10 and the inner peripheral wall T2 of the perforated hole T1 are in contact with each other.
When the main body 1 is pushed upward, each of the curved portions 10, 1
0 can be pressed inward of the main body 1, whereby an elastic force is applied to the locking portions 92, 92 of the elastic pieces 2 locked to the main body 1, and the engagement between the locking portion 92 and the main body 1 is performed. The suspension can be released. Therefore, when setting in the perforated hole T1 of the ceiling T1,
It is sufficient to simply insert the main body 1 into the drilled hole T1 from the lower side to the upper side, so that it is easy to operate.

In the second invention of the present application, the elastic pieces 2... 2
At each tip side, a steeply inclined portion 9a extending obliquely upward and outward of the main body portion 1, and at a front end side of the steeply inclined portion 9a, a predetermined angle from the steeply inclined portion 9a outwardly of the main body portion 1. In the case where the ceiling T1 has a large thickness, the inner peripheral wall T2 of the hole T1 of the ceiling T1 is further provided with the steeply inclined portion 9a as shown in FIG. A gentle inclined portion 9b formed by bending at a predetermined angle A outward of the main body 1
Can be abutted. Thereby, the elastic piece 2 can be prevented from slipping from the inner peripheral wall T2, and even if the thickness of the ceiling T1 is large, it is possible to reliably prevent the main body 1 from being shifted downward with respect to the drilled hole T1. In addition, the gentle slope 9b has
A locking portion 92 is provided on a part of the side wall 5 of the main body 1 so as to be lockable from above. By locking the locking portion 92 to the side wall 5 of the main body 1, the steeply inclined portion 9a is bent. In order to form the curved portion 10 projecting outwardly of the main body 1 and to extend the gentle inclined portion 9b in the vertical direction, as shown in FIG. When pressed by the inner peripheral wall T2 when entering into T1, the curved portion 10 of the steeply inclined portion 9a receives a pressing force in the direction of the main body portion 1 and
As a result of 0 and 10 becoming linear, the gentle slope portion 9b is pressed against the side wall 5 of the main body 1 and slides the side wall 5 upward. As a result, the locking portion 92 is pushed upward,
The locking portion 92 locked to the side wall 5 of the main body 1 can be easily removed.

In the third aspect of the present invention, similarly to the second aspect of the present invention, the elastic piece 2 is divided into the inner peripheral wall T2 by the gentle slope portion 9b.
And the main body 1 can be reliably prevented from shifting downward with respect to the drilled hole T1 even when the ceiling T1 is thick. Further, a convex portion 93 protruding from the gentle inclined portion 9b in the direction of the main body portion 1 is provided.
A locking portion 92 that is locked to the side wall 5 of the main body 1 by being pressed from the inside to the outside, and is unlocked by being pressed from the outside of the body 1 to the inside, By locking the locking portion 92 to the side wall 5 of the main body 1,
As shown in FIG. 12, the convex portion 93 comes into contact with the outer wall 5 of the main body 1, and the steeply inclined portion 9 a bends to form a curved portion 10 projecting outwardly of the main body 1. When the curved portion 10 is pressed by the inner peripheral wall T2 when the curved portion 10 is inserted into the perforated hole T1 of the ceiling T1, the curved portion 10 of the steeply inclined portion 9a is pressed.
Receives the pressing force in the direction of the main body 1, and the bending portions 10, 10 receive a force to try to be linear, and as a result, the convex portion 93 is formed as a fulcrum and the gentle inclined portion 9 b is formed with respect to the steeply inclined portion 9 a. The elastic force for returning to the predetermined angle acts, and the locking portion 92 receives the elastic force in the outward direction of the main body 1, so that the locking portion 92 can be easily unlocked from the main body 1.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an exploded perspective view of an embedded lighting device according to an embodiment of the present invention. The embedded lighting device of the present invention includes a main body 1 and a plurality of elastic pieces 2 having flexibility.

The main body 1 has a lower frame 3 and an upper frame 4. In this embodiment, the lower frame 3 has a cylindrical shape as a whole, and has an outer diameter smaller than an inner diameter of a circular hole T1 formed in the ceiling T (shown in FIG. 5). Hole T
1. The shape of the lower frame 3 may be formed in conformity with the shape of the perforated hole T1 of the ceiling T. For example, if the perforated hole T1 is rectangular, the shape of the lower frame 3 is also formed according to the square. Just do it. or,
On the outer peripheral surface of the lower frame 3, two fixing portions 31, 31 each having a bolt insertion hole 31a for fixing the upper frame 4 are provided so as to face each other. The fixing portion 31 is formed to be depressed inward from the outer peripheral surface in consideration of the thickness of the upper frame 4. On the other hand, the lower end is provided with a disk-shaped flange portion 32 formed over the entire circumference with a predetermined width so as to be able to abut against the peripheral portion of the perforated hole T1 of the ceiling T as shown in FIG. It has been done.

The upper frame 4 has left and right side pieces 5, 5 and an upper piece 6, and has an overall U-shape. Each of the left and right side pieces 5, 5 is provided with a fixing piece 51 having a bolt insertion hole 51a fixed to the fixing portion 31 of the lower frame 3 at a lower end, and is provided with a bolt 7a and a nut 7b to be described later. 4 can be fixed to the lower frame 3. The fixing piece 51 is bent inward from the side piece 5 as shown in FIG. 3 so that a step 51b is formed on the outer surface of the fixing piece 51 and the outer wall of the side piece 5, and the step 51b is formed. This prevents the head 7a of the bolt 7 passed through the bolt insertion hole 51a from protruding outward from the outer wall of the side piece 5.

The fixed pieces 5 on the left and right side pieces 5, 5 are also provided.
Above 1, a locking groove 52 is formed as shown in FIG. 2. The locking groove 52 in this embodiment is formed with a predetermined width L1 vertically in the longitudinal direction of the side piece 5, and has a wide portion having a width 2 wider than the width L1 of the locking groove 52 at the upper end thereof. 52a.

As shown in FIG. 1, the upper piece 6 is provided with a circular socket insertion hole 61 into which the socket is inserted.

The elastic pieces 2, 2 are for attaching the main body 1 to the perforated hole T1 of the ceiling T. In this embodiment, the elastic pieces 2, 2 are composed of two pieces, each composed of plate-like steel. It is made of a material having flexibility. This elastic piece 2 is shown in FIGS. 4 (A) (B) (C)
Is formed by bending the lower end portion of one plate-like body into a substantially V-shape as shown in FIG. 1 and includes a lower left body mounting piece 8 and a right pressing piece 9. Have been.

The main body mounting piece 8 constitutes a mounting part to be mounted on the main body part 1, and has a hook part 81 which is hooked on a locking groove 52 of the upper frame 4 at an upper part, and a fixing piece 51 of the upper frame 4.
And a main body attaching portion 82 attached to the main body. As shown in FIG. 4A, the hook portion 81 is provided with the main body mounting piece 8.
The front portion and the rear portion are cut in a U-shape symmetrically in the front-rear direction, and have a groove insertion portion 81b and hook pieces 81c, 81c formed to have a predetermined width L2. The width L2 of the groove insertion portion 81b is formed to be slightly smaller than the groove width of the locking groove 52 so that the groove can be inserted into the locking groove 52. On the other hand, the hook pieces 81c and 81c The upper and lower sides of the side wall 5 of the upper frame 4 can be in contact with the front and rear sides of the locking groove 52 by projecting from the front and rear sides of the groove fitting portion 81b so as to be wider than the groove width L1 of the locking groove 52. It has been made like that. Also, the width of the hook pieces 81c, 81c is formed to be smaller than the width of the wide portion 52a of the locking groove 52, and by inserting the hook pieces 81c, 81c from the wide portion 52a, the groove fitting insertion portion 21b is formed. It can be fitted into the locking groove 52. The hook pieces 81c, 81c are
It is also possible to enter from the locking groove 52.

The main body mounting portion 8 of the main body mounting piece 8
As shown in FIG. 4 (A), the hook 2 extends from the hook 81 to the step 8.
By being bent inward (to the left in the drawing) through 3, the outer wall of the fixed piece 51 and the outer wall of the side piece 5 match the step 51 b of the outer wall. or,
The main body mounting portion 82 has a bolt insertion hole 82a.

The main body mounting piece 8 is mounted on the main body 1 as follows. First, as shown in FIG. 6, the hook pieces 81 c and 81 c are passed through the locking grooves 52, and in this state, the bolts 7 a are moved from the bolt insertion holes 81 a of the main body mounting portion 81 to the bolt insertion holes 51 a of the upper frame 4. Further, after the nut 7 is passed through the bolt insertion hole 31a of the lower frame 3,
By being locked to b, the lower frame 3 and the upper frame 4 are fixed, and at the same time, the elastic pieces 2 are also fixed to the upper frame 4 and the lower frame 3. In this fixed state, since the main body mounting portion 81 is along the outer wall of the fixing piece 51 while the groove fitting insertion portion 81b of the hook portion 81 is bent with the tightening of the bolt 7a, the elastic piece 2 is attached to the upper frame 4. The elastic pieces 2 and the upper frame 4 can be reliably fixed to each other in the biased state. In addition, since the groove insertion portion 81b is inserted into the locking groove 52, the elastic piece 2 does not move back and forth with respect to the upper frame 4, so that displacement can be prevented.
On the other hand, since the main body mounting piece 8 of the elastic piece 2 is mounted on the main body 1 as described above, the lower end of the pressing piece 9 of the elastic piece 2 has the flange 32 of the lower frame 3 of the main body 1. It is disposed in the vicinity, and is disposed in a state where the tip end of the upper end faces obliquely upward in the outward direction of the main body 1 from the lower end.

As shown in FIG. 4A, the pressing piece 9 has a steeply inclined portion 9a and a gentlely inclined portion 9b formed at the tip end of the steeply inclined portion 9a. The steeply inclined portion 9 a
In the state shown in FIG. 5 attached to the main body 1, the main body 1 is formed to extend obliquely upward and outward. on the other hand,
The gentle inclined portion 9b is formed by bending at a predetermined angle A further outward from the main body 1 from the steep inclined portion 9a.

At the top end of the gentle slope 9b, a stopper 91 is provided.
Is provided.

The retaining piece 91 is used to lock the main body 1 set in the perforated hole T1 of the ceiling T so that the main body 1 does not come off and fall even if the main body 1 is shifted downward from the ceiling T.
It is formed by bending the tip of the pressing piece 9 downward.

The locking portion 92 is for removably locking the locking groove 52 of the side piece 5 of the upper frame 4 and is shown in FIGS. 4B and 4C.
As shown in the figure, two locking pieces 92 provided on both front and rear sides
a and 92a. These are the pressing pieces 9
Cut and raise the front and rear both sides from the tip to the upper side,
The wide portion 52 of the locking groove 52 is formed by bending.
The lower pieces 52b, 52b in FIG. 5a can be hooked and locked from above.

A description will be given of a method of using the thus-configured embedded lighting fixture of the present invention. As shown in FIG. 5, the main body 1 to which the elastic piece 2 is attached has the pressing piece 9 of the elastic piece 2 whose tip end side is opened outward, and in this state, the pressing is performed from the upper frame 4 side to the lower side of the ceiling T. It cannot be inserted into the hole T1. Therefore, as shown in FIG. 6, the locking pieces 92a, 92a of the elastic pieces 2, 2 are locked in the locking grooves 52 of the side piece 5 of the upper frame 4. Locking pieces 92a, 9
In order to lock the 2a in the locking groove 52, the distal end side of the pressing piece 9 is bent toward the main body 1 by pushing up from the lower side against the elasticity of the pressing piece 9, and the locking is performed. Pieces 92a, 92
a is a lower piece 52b in the wide portion 52a of the locking groove 52;
52b. At this time, the steeply inclined portion 9a includes:
A curved portion 10 is formed, and the curved portion 10 has an interval L between those formed on the left and right elastic pieces 2 as shown in FIG.
4 is formed larger than the diameter L of the perforated hole T1. The lower pieces 52b, 52b of the locking grooves 52 are connected to the locking pieces 92a, 92a.
When engaging with the locking groove 92a, the locking pieces 92a
2, the steep slope 9
When the curved portion 10 formed on the upper portion a is pressed inward, the locking pieces 92a, 92a are pushed upward, and the locking pieces 92a, 92a are moved downward by the lower piece 52 of the locking groove 52.
b and 52b, the pressing of the bending portion 10 is stopped at that time. Thereby, the locking pieces 92a, 9
2a returns to the lower position, and the locking pieces 92a, 92a can be easily locked to the lower pieces 52b, 52b of the locking groove 52.

Then, in this locked state, the main body 1 is inserted into the perforated hole T1 of the ceiling T from the upper frame 4 side. When inserted, the distance L4 between the curved portions 10, 10 is formed larger than the diameter of the perforated hole T1 as described above,
As shown in FIG. 7, the inner peripheral wall T2 of the perforated hole T1 and the curved portion 1
0 and 10 come into contact with each other, and the main body 1 is pressed from the contact state. As a result, the steeply inclined portion 9a receives the pressing force in the direction of the main body 1, and a force is applied to the curved portions 10, 10 to try to be straight. When such a force is applied to the steeply inclined portion 9a, the gentlely inclined portion 9b is pressed against the side wall 5 of the main body 1 and is pushed upward, so that the side wall 5 slides upward. As a result, the locking pieces 92a, 92a are also pushed upward, and the locking pieces 92a, 92a easily come off the locking groove 52.
Also, at this time, when the main body 1 is inserted into the perforated hole T1, even when the main body 1 is inserted with the main body 1 inclined with respect to the perforated hole T1, the bending portions 10, 10 are pressed against the inner peripheral wall T2, Locking piece 9
2a and 92a come off easily from locking groove 52. After the locking pieces 92a and 92a are unlocked, the steeply sloping portion 9a forming the curved portion 10 returns to the original linear shape and presses the inner peripheral wall T2 of the perforated hole T1 as shown in FIG. I do.

When the thickness of the ceiling T is large, the gentle slope 9b can be brought into contact with the inner peripheral wall T2 of the hole T1 of the ceiling T as shown in FIG. When the thickness of the ceiling T increases, the elastic piece 2 is pressed toward the main body 1 by the inner peripheral wall T2 of the ceiling T accordingly. For example, the pressing piece 9 of the elastic piece 2 is In the case where only the steeply inclined portion is provided without being provided, the steeply inclined portion becomes nearly vertical (indicated by a dashed line in the drawing), and the inner peripheral wall T2 is easily slid downward. As a result, the possibility that the lighting fixture shifts downward due to its own weight increases. However, as in the present invention, the gently inclined portion 9a is further bent outward from the main body portion 1 at a predetermined angle A from the steeply inclined portion 9a to form the gentle inclined portion 9b into the inner peripheral wall T2.
When the ceiling T is thickened, the gently inclined portion 9b can be maintained in a state of being inclined outwardly of the main body portion 1 and can be prevented from slipping downward. Therefore, it is possible to reliably prevent the lighting fixture from rubbing downward on the perforated hole T1 due to its own weight.

By attaching the main body 1 to the ceiling T as described above, when the main body 1 is inserted into the hole T1 of the ceiling T,
The elastic pieces 2 and 2 do not need to be bent by hand, and the main body 1 may be simply inserted into the perforated hole T1 of the ceiling T from the lower side to the upper side, so that the mounting operation can be facilitated. Especially,
In the case where three or more elastic pieces 2 are provided, similarly, it is only necessary to simply insert the main body 1 into the perforated hole T1 of the ceiling T from the lower side to the upper side, so that the work can be performed more efficiently. .

Next, another embodiment of the elastic piece 2 will be described. As shown in FIGS. 9 (A), 9 (B) and 9 (C), the elastic piece 2 is formed by bending the lower end of a single plate-like body into a substantially V-shape, similarly to the elastic piece 2 of the previous embodiment. It is composed of a lower left body mounting piece 8 and a right pressing piece 9.

The main body mounting piece 8 is the elastic piece 2 of the previous embodiment.
, And is attached to the main body 1 by the same method. On the other hand, as shown in FIG. 4A, the pressing piece 9 also has a steeply inclined portion 9a and a steeply inclined portion 9a similarly to the elastic piece 2 of the previous embodiment.
And a gentle slope 9b formed on the tip side of
The gently inclined portion 9b is provided with a retaining piece 91 at the top end thereof, a locking portion 92 below the locking piece 91, and a concave portion 93 below the locking portion 92.

The retaining piece 91 is made of the elastic piece 2 of the previous embodiment.
Similarly to the above, the front end of the pressing piece 9 is formed by bending the tip downward, but the locking portion 92 includes two locking pieces 92a, 92a provided on both front and rear sides as shown in FIG.
It is composed of They are made flexible by cutting and raising both front and rear sides of the pressing piece 9 upward so that the tip of the pressing piece 9 faces the direction of the main body 1, and The gap L3 between the locking pieces 92a, 92a is formed slightly wider than the groove width L1 of the locking groove 52, and can be locked to the side pieces 52c, 52c of the locking groove 52. .

The protruding portion 93 is to be brought into contact with the outer wall of the side piece 5 of the upper frame 4, and a part of the pressing piece 9 is substantially hemispherical on the upper side which becomes the main body 1 side by squeezing. It is formed by extruding. The protrusion 93 is not limited to be formed in a substantially hemispherical shape, but may be in any shape as long as it can be in point contact or substantially point contact with the outer wall of the side piece 5.

Next, a mounting method when the elastic pieces 2 are used will be described. Even when the elastic pieces 2 are used, the distal end side of the pressing piece 9 of the elastic piece 2 is opened outward as shown in FIG.
As shown in FIG. 12, the locking pieces 92 a of the elastic pieces 2, 92 a are used to lock the side pieces 5 of the upper frame 4. It is locked in the groove 52. In order to lock the locking pieces 92a, 92a in the locking grooves 52, the distal end side of the pressing piece 9 is pushed up from the lower side against the elasticity of the pressing piece 9 so as to be pushed toward the main body 1 side. Bend. At that time, first, the steeply inclined portion 9a at the lower part of the pressing piece 9 bends in a curved shape, and while the curved portion 10 is formed in the steeply inclined portion 9a, the convex portion 93 contacts the outer wall of the side piece 5, and further, The locking pieces 92a, 92a are drawn to the locking groove 52 while the portion between the projection 93 and the locking pieces 92a, 92a is bent in a curved shape. As shown in FIG. 8, the curved portion 10 formed on the steeply inclined portion 9a is formed such that the distance L4 between the left and right elastic pieces 2 is larger than the diameter of the perforated hole T1. And the locking pieces 92a, 92a
Is pressed into the locking groove 52. This pressing causes the locking piece 9
2a and 92a are deflected to reduce the distance L3 between the two and enter the locking groove 52. After entering, locking pieces 92a, 9
The locking piece 9 is restored to its original state by the elastic force of 2a.
As a result of the interval L3 between the lock grooves 2a and 92a being wider than the groove width L1 of the locking groove 52, the locking pieces 92a and 92a and the locking groove 52 can be locked.

Then, in this locked state, the main body 1 is inserted into the perforated hole T1 of the ceiling T from the upper frame 4 side. As the insertion proceeds, the interval L4 between the curved portions 10 and 10 is formed to be larger than the diameter of the perforated hole T1, so that the inner peripheral wall T2 of the perforated hole T1 and the curved portions 10 and 10 as shown in FIG. The main body 1 is pressed from the contact state. As a result, the steeply inclined portion 9a receives the pressing force in the direction of the main body 1, and a force is applied to the curved portions 10, 10 to try to be straight. When such a force is applied to the steeply inclined portion 9a, an elastic force is applied to the gentlely inclined portion 9b so as to return to the predetermined angle A formed with respect to the steeply inclined portion 9a. As a result, the protrusion 93 is used as a fulcrum. The locking pieces 92a, 92a receive the outward force of the main body 1, and the locking pieces 92a, 92a easily come off from the locking groove 52. Further, when the main body 1 is inserted into the perforated hole T1, even when the main body 1 is inserted with the main body 1 being inclined with respect to the perforated hole T1, the bending portions 10, 10 are pressed against the inner peripheral wall T2, and the locking pieces are formed. 9
2a and 92a come off easily from locking groove 52. After the locking pieces 92a, 92a are unlocked, the steeply sloping portion 9a forming the curved portion 10 returns to the original linear shape and presses the inner peripheral wall T2 of the perforated hole T1 as shown in FIG. I do.

At this time, when the thickness of the ceiling T is large, as shown in FIG. 14, a gentle slope portion 9b is formed on the inner peripheral wall T2 of the hole T1 in the ceiling T as in the case of the elastic piece 2 described above. Can be abutted. When the thickness of the ceiling T increases, the elastic piece 2 is pressed toward the main body 1 by the inner peripheral wall T2 of the ceiling T accordingly. For example, the pressing piece 9 of the elastic piece 2
In the case where only the steeply inclined portion is formed without providing the gentlely inclined portion 9b, the steeply inclined portion is almost vertical (indicated by a dashed line in the drawing), and the inner peripheral wall T2 is easily slid downward. As a result, the possibility that the lighting fixture shifts downward due to its own weight increases. However, the thickness of the ceiling T is increased by contacting the gentle slope 9b, which is bent at a predetermined angle A from the steep slope 9a to the outside of the main body 1 as in the present invention, against the inner peripheral wall T2. In this case, the gently inclined portion 9b can be maintained in a state of being inclined outwardly of the main body portion 1, and can be hardly slipped downward. Therefore, it is possible to reliably prevent the lighting fixture from rubbing downward on the perforated hole T1 due to its own weight. The above is the description of the elastic piece 2 of another embodiment.

In this embodiment, the main body 1 is attached to the lower frame 3
And the upper frame 4, but may be formed as an integral body, and the shape of the main body 1 is also the same as in the present embodiment. 15A and 15B is not limited to the U-shaped one consisting of
May be formed of a cylindrical shape as shown in FIG.

In this embodiment, two elastic pieces 2 are provided. However, three or more elastic pieces may be provided. In this case, the number of the upper pieces 4 may be equal to the number of the elastic pieces 2. The side piece 5 and the fixing portion 31 of the lower frame 3 may be provided. Further, in this embodiment, the locking groove 5 is formed on the side wall 5 of the main body 1.
2 is formed, and the locking portion 92 of the elastic piece 2 is locked thereto. However, the present invention is not limited to this mode. For example, a protruding piece is formed on the upper wall 5 of the main body 1 and the protruding piece is formed. The locking portion 92 may be locked.

[0037]

As described in the above embodiments, the first invention of the present application inserts the main body into the perforated hole in the ceiling with the locking portion of each elastic piece locked on the side wall of the main body. With this, each curved portion can be pressed inwardly of the main body by the inner peripheral wall of the perforation hole, whereby the elastic force in the outward direction of the main body is applied to each locking portion of the elastic piece locked to the main body. The lock between the locking portion and the main body can be released. Therefore, when the main body is set in the perforated hole in the ceiling, the main body can be simply inserted from the lower side to the upper side in the perforated hole, and the operation can be easily performed.

The second invention of the present application provides, in addition to the effects of the first invention of the present application, when the thickness of the ceiling is large, the inner peripheral wall of the hole formed in the ceiling further extends from the steeply inclined portion to the outside of the main body. The gently inclined portion formed by bending at a predetermined angle can be brought into contact, and the elastic piece can be prevented from slipping from the inner peripheral wall. Therefore, even when the thickness of the ceiling is large, it is possible to reliably prevent the main body from being displaced from the perforated hole. Also, when the curved portion 10 is pressed into the perforated hole T1 of the ceiling T1 by the inner peripheral wall T2, the locking portion 92 is pushed upward, thereby being locked to the side wall 5 of the main body portion 1. The locking portion 92 can be easily removed. Therefore, the locking portion and the main body can be easily and reliably unlocked when inserted into the hole formed in the ceiling.

The third invention of the present application provides, in addition to the effects of the first invention of the present application, when the thickness of the ceiling is large, the inner peripheral wall of the hole formed in the ceiling extends from the steeply inclined portion to the outside of the main body. The gently inclined portion formed by bending at a predetermined angle can be brought into contact, and the elastic piece can be prevented from slipping from the inner peripheral wall. Therefore, even when the thickness of the ceiling is large, it is possible to reliably prevent the main body from being displaced from the perforated hole. Further, when the elastic piece is inserted into the drilled hole in the ceiling, a stronger elastic force can be applied to the locking portion of the elastic piece by the steeply inclined portion and the gentlely inclined portion, so that the locking portion and the main body can be easily and surely connected. Can be unlocked.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embedded lighting device according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of a side piece of an upper frame.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4A is a front view of an elastic piece, and FIG. 4B is a left side view thereof. (C) is a plan view of (A).

FIG. 5 is a perspective view showing a state in which an elastic piece is attached to a main body.

FIG. 6 is an explanatory view of a state in which a locking portion of an elastic piece is locked to a main body.

FIG. 7 is an explanatory cross-sectional view when the main body is inserted into a perforated hole in a ceiling.

FIG. 8 is an explanatory cross-sectional view when the camera is placed on a thick ceiling.

FIG. 9A is a front view of another elastic piece, and FIG.
It is the left view. (C) is a plan view of (A).

FIG. 10 is a sectional view taken along line XX in FIG. 9 (C).

FIG. 11 is a perspective view showing a state in which another elastic piece is attached to the main body.

FIG. 12 is an explanatory view of a state in which a locking portion of another elastic piece is locked to a main body.

FIG. 13 is an explanatory cross-sectional view when a main body to which another elastic piece is attached is inserted into a perforated hole in a ceiling.

FIG. 14 is an explanatory cross-sectional view when a main body to which another elastic piece is attached is put on a thick ceiling.

15A is a perspective view of a conventional example, and FIG. 15B is a side view of FIG.

16A is a perspective view of another conventional example, and FIG. 16B is a plan view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 2 Elastic piece 3 Lower frame 4 Upper frame 5 Side piece 8 Body mounting piece 9 Pressing piece 9a Steeply inclined portion 9b Slowly inclined portion 52 Locking groove 92 Locking portion 93 Convex portion T Ceiling T1 Perforated hole

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) Reference actual opening Sho 62-4018 (JP, U) actual opening Sho 59-5814 (JP, U) actual opening Sho 57-157013 (JP, U) actual opening Sho 49- 135281 (JP, U) Actually open sho 53-30286 (JP, U)

Claims (3)

(57) [Claims] A flexible elastic piece (2) having a proximal end attached to a side wall (5) of a main body (1) and a distal end extending diagonally upward and outward of the main body (1). ) …………………………………………………………………………………………………… (2) Hole
The inner peripheral wall (T2) of (T1) is pressed, and these elastic pieces (2)… (2)
In the recessed lighting fixture in which the main body (1) is attached to the ceiling (T) by the pressing force of the above, the elastic pieces (2)… (2) are detachable from the main body (1) at the tip side of each A locking portion (92) that can be locked to the main body (1) is provided with a locking portion (92) that can lock the elastic piece. A curved portion (10) is formed between the locking portion (92) in (2) and the base end (8) for attachment to the main body portion (1) due to the bending of the elastic piece (2). 10) protrudes outward from the main body (1), so that each curved part (10) (10) is inserted as the main body (1) is inserted into the perforated hole (T1) in the ceiling (T). Is drilled hole (T1)
The inner peripheral wall (T2) is pressed against the inside of the main body (1) by an abutment, and the unlocking means moves the main body (1) into the perforated hole (T1) of the ceiling (T). The inner peripheral wall (T2) of the perforated hole (T1)
An embedded lighting device characterized in that the locking between the locking portion (92) and the main body portion (1) is released by pressing (0). 2. A steep portion (9) extending obliquely upward and outward of the main body portion (1) is provided at the tip end of each of the elastic pieces (2).
a), and a gentle slope (9b) formed by bending the steep slope (9a) from the steep slope (9a) outwardly of the main body (1) at a predetermined angle (A) at the tip side of the steep slope (9a). The gentle slope (9b) has a part (5) of the side wall (5) of the main body (1).
2b) is provided with a locking portion (92) that can be locked from the upper side, and the locking portion (92) is locked to the side wall (5) of the main body (1), whereby the steeply inclined portion (92) is provided. 9a) is bent to form a curved portion (10) projecting outward from the main body portion (1), and a gentle inclined portion (9
b) is extended in the vertical direction, and the locking portion (92) is pushed upward by pressing the curved portion (10). An embedded lighting device as described. 3. A steeply inclined portion (9) extending diagonally upward and outward of the main body portion (1) is provided at the distal end of each of the elastic pieces (2).
a), and a gentle slope (9b) formed by bending the steep slope (9a) from the steep slope (9a) outwardly of the main body (1) at a predetermined angle (A) at the tip side of the steep slope (9a). The gentle slope (9b) has a protrusion (9) protruding in the direction of the main body (1).
3) and a locking portion (92) formed on the tip side of the convex portion (93), and the locking portion (92) is partially (52) of the side wall (5) of the main body (1).
c) is locked by being pressed outward from the inside of the main body (1), and unlocked by being pressed inward from the outside of the main body (1), When the locking portion (92) is locked to the side wall (5) of the main body (1), the projection (93) comes into contact with the side wall (5) of the main body (1) and the steeply inclined portion is formed. (9a) is bent to form a curved portion (10) projecting outwardly of the main body (1), and when the curved portion (10) is pressed, the locking portion (92) is formed. 2. The recessed lighting device according to claim 1, wherein the device is adapted to receive a force from the inside to the outside of the main body portion (1).