JPH09259629A - Lower adapter of installation apparatus for ceiling mount type luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a luminaire main body from unexpectedly coming off an upper adapter attached to a hooking ceiling. SOLUTION: A lower adapters 5 has engaging claws 38, 39 which are to be joined to engagement reception parts 26 of an upper adapter 4 in a detachable way while being set on the opposite to each other in both inner side faces of fitting hole 33 in which the upper adapter 4 and the engaging claws 38, 39 are so formed as to come in and come out and move freely in both inner faces of the fitting hole 33. Enforcing springs to enforce both of the engaging claws 38, 39 to be projected out of be projected out of the inner face of the fitting hole 33 are respectively installed and releasing knobs 44 to move both fitting claws 38, 39 backward in a state in which both claws are subsided from the inner faces of the fitting hole 33 while resisting against the enforcing force of the enforcing springs are installed in the lower face of the lower adapter base 32 in the way that the knobs are exposed to outside. Locking members 49, 49 to be switched between locking positions and unlocking positions are respectively installed in the lower face of the lower adapter base 32 in a rotatable way. At least a part of the circumferential face of the each locking member 49, 49 interferes respective releasing knobs 44 by revolving the locking members 49, 49 to the locking positions, so that both engaging claws 38, 39 are locked in a state in which the claws 38, 39 are projected to the inner faces of the fitting hole 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower adapter for a ceiling-mounted lighting fixture mounting device for mounting a lighting fixture on a ceiling ceiling ceiling ceiling.

[0002]

2. Description of the Related Art Conventionally, there has been known a lighting fixture mounting device that has a fixture for hooking on a hook ceiling and detachably engages a fixture of a fixture body with the fixture. For example,
In the lighting fixture mounting device described in JP-A-7-37410, the fixture has a substantially disc shape, and has a pair of blades hooked on a hook ceiling on the upper surface of the fixture.
A circumferential groove formed around the entire circumference of the fixture and the outer peripheral edge of the top face of the fixture are each a locking step, and a lock button can be retracted on the top face of the fixture by spring force. Is provided,
A lock release button for retracting the lock button against the spring is slidably provided in a recess formed on the side of the fixture.

Further, the fixture main body of the above-mentioned lighting fixture mounting device has a locking portion which is elastically locked to the locking step portion of the mounting tool in a disengageable manner, and a releasing operation for releasing the locking of the locking portion. A locking device having a portion. The locking tool is arranged with respect to an opening formed in the center of the instrument body, and a fitting tube portion for fitting the attachment tool is provided in the center of the locking tool, and the fitting tube portion is provided on opposite surfaces thereof. While each of the projecting holes is provided, a storage chamber that communicates with the fitting tubular portion through each of the projecting holes is formed, and a locking portion is slidably stored in each of the storage chambers in the radial direction. It is urged toward the fitting tubular portion in the radial direction, and the tip of the locking portion is normally in a state of being projected from the projecting hole into the fitting tubular portion. In addition to being formed in a circular arc concave shape along the peripheral surface, a taper guide is formed on the upper surface thereof, and a release operation portion integrally provided on the locking portion is exposed from an opening opened on the lower surface of the storage chamber. There is.

The attachment of the fitting to the hook ceiling is performed by inserting the plug blade into the hook ceiling, rotating the fitting clockwise, and hooking the plug blade on the receiving blade on the hook ceiling side. The lock blade of the fixture is fitted into the lock button fitting recess of the hook ceiling to prevent rotation of the fixture and the blade of the fixture is electrically connected to the hook ceiling. Stopping is done.

To remove the fitting from the hook ceiling, the lock release button must be pushed in, that is, the lock button must be retracted against the spring to be retracted into the upper surface of the fitting, and the lock button of the fitting should be retracted. Rotate the fixture counterclockwise while keeping it removed from the lock button fitting recess.

When the fitting main body is attached to the fitting, the tapered guide of the fitting is brought into contact with the edge of the fitting when the fitting cylinder of the fitting provided on the fitting is fitted into the fitting. When the locking part is guided and moves backwards to the storage chamber side against the spring, the fitting cylinder part is fitted to the fitting, and the tip of the locking part is located on the locking step part on the fitting side, The locking portion is projected by the bias of the spring and the locking step portion is locked.

According to this, since the fixture is substantially disc-shaped, the instrument body can be rotated in the circumferential direction of the fixture and can be attached at an arbitrary rotation position.

However, this lighting fixture mounting device is
Since the release operation portion integrally provided in the locking portion is provided so as to be exposed from the opening formed in the lower surface of the locking tool, after attaching the locking tool of the instrument body to the mounting tool, If you accidentally touch the release operation part, the locking part moves backwards to the storage chamber side against the spring, the locked state of the locking tool with respect to the fitting is released, and the fitting body locks from the fitting. There is a risk that the ingredients will come off.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a ceiling-mounted lighting fixture mounting device capable of preventing the fixture main body from being accidentally detached from the upper adapter attached to the hook ceiling. is there.

[0010]

A lower adapter for a ceiling-mounted lighting fixture mounting device of the present invention is detachably fitted and locked to an upper adapter having a plug blade on the upper surface for hooking to a hooking ceiling. Be deployed on the side,
In order to solve the above-mentioned problem, a fitting hole for fitting the upper adapter is provided in the lower adapter base, the inner surfaces of the fitting hole are opposed to each other, and can be attached to and detached from the lock receiving portion of the upper adapter. The engaging claws to be engaged are respectively arranged, and both the engaging claws are provided so as to be able to move in and out with respect to the inner side surface of the fitting hole, and the both engaging claws are attached from the inner side surface of the fitting hole. An urging spring is provided to urge the projecting state, and a release knob that moves the both locking claws backward from the inner side surface of the fitting hole against the urging force of the urging spring is set to the lower side. A lock that is provided so as to be exposed on the lower surface of the adapter base, and at least a part of the peripheral surface of the adapter base interferes with the release knobs to lock the locking claws so as to project from the inner surface of the fitting hole. Position and the peripheral surface do not interfere with the release knobs Is provided on the lower surface of the lower adapter base so as to be rotatable so as to be switched between a lock release position that allows the housing to move in and out with respect to the inner surface of the fitting hole. .

The upper adapter is mechanically attached to and electrically connected to the ceiling ceiling mounted hook ceiling. Further, the lower adapter is attached to the instrument body.

To attach the lower adapter to the upper adapter, both locking members provided on the lower surface of the lower adapter base are operated and moved to the unlocked positions. When the lock member is in the unlocked position, part of the peripheral surface of the lock member
Both locking claws can move backward without interfering with a release knob provided on the lower surface of the lower adapter base, and both locking claws can move in and out with respect to the inner surface of the fitting hole.

When the upper adapter is fitted into the fitting hole of the lower adapter, both locking claws of the lower adapter come into contact with the edge of the lock receiving portion of the upper adapter, and resist the bias of the bias spring. When both locking claws are moved backwards and sink into the inner surface of the fitting hole, and both locking claws pass over the lock receiving part, both locking claws are returned to the inner surface of the fitting hole by the restoring force of the biasing spring. With respect to each other, both locking claws of the lower adapter engage with the locking receiving portion of the upper adapter, the lower adapter is supported by the upper adapter, and the instrument body is attached to the upper adapter. By engaging the connector provided on the upper adapter with the connector provided on the instrument body,
The instrument body is electrically connected to the hook ceiling.

After attaching the lower adapter to the upper adapter, the lock member provided on the lower surface of the lower adapter base is operated to pivotally move to the lock position. At this time, the lock member pushes the release knob toward the fitting hole while at least a part of the peripheral surface of the lock member interferes with the release knob. When the locking member is in the locking position, the backward movement of both locking claws is prevented, and as a result, the state in which both locking claws are projected from the inner surface of the fitting hole is maintained, and the locking receiving part of the upper adapter is retained. The engagement state of both locking claws of the lower adapter is maintained, and the instrument body is prevented from being accidentally disengaged from the upper adapter.

To remove the lower adapter from the upper adapter, the lock member provided on the lower surface of the lower adapter base is operated and moved to the unlocked position, and the lock member is moved in the backward movement direction of both locking claws provided on the lower adapter. Move to a position that does not interfere.

In this state, by operating the release knob provided on the lower surface of the lower adapter base, both locking claws are moved backward to the state of being retracted from the inner side surface of the fitting hole against the bias of the bias spring. Then, the engagement state of both the locking claws of the lower adapter with the locking receiving portion of the upper adapter is released.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a ceiling-mounted lighting fixture mounting device (hereinafter, simply referred to as a lighting fixture mounting device) to which the lower adapter of the present invention is applied. The lighting fixture mounting device 1 has a hook ceiling 2 fixed to a ceiling surface 7.
It is composed of an upper adapter 4 having a pair of plug blades 3 to be hooked on the upper surface of the upper adapter 4 and a lower adapter 5 detachably attached to the upper adapter 4. Also, the lower adapter 5
Is attached to the instrument body 6, and the instrument body 6 is
By engaging the lower adapter 5 with the upper adapter 4 attached to the hook ceiling 2, the upper adapter 4
Attached to.

The hook ceiling 2 is a conventionally known one, and a pair of arc-shaped blade insertion holes 9, 9 are provided around the center on the lower surface of a rectangular parallelepiped sealing base 8. , 9 are wide portions 1 at the start end in the clockwise rotation direction when the hook ceiling 2 is viewed from the lower side.
0 and 10 are formed, and narrow portions 11 and 11 are formed continuously from the start end portion to the end portion. Further, a blade receiving portion (not shown) is provided on the inner back surface of the narrow portion 11, 11 of each blade insertion opening 9, 9 and the blade receiving portion is connected to indoor wiring. Conductive connection terminal board (not shown)
Are arranged.

As shown in FIGS. 2 to 3, the upper adapter 4 is generally composed of an upper adapter base 12 and a metal reinforcing plate 13 densely provided on the outer peripheral edge of the upper adapter base 12 on the upper surface side. The closing plate 14 is attached to the lower surface of the upper adapter base 12.

As shown in FIGS. 2 to 3, the upper adapter base 12 has a circular plate-like circular flange portion 15, a bulging portion 16 bulging on the upper surface of the circular flange portion 15, and a bulging portion 16. A hollow accommodating portion (not shown) formed on the back side of the base plate portion 15 along the opposite side edges of the bulging portion 16 in the longitudinal direction.
The circular flange portion 15 having the holes 17, 17 provided in the
Has an outer peripheral edge formed flat over substantially the entire circumference.

The bulging portion 16 of the upper adapter base 12 is formed in a diametrical direction with a predetermined width as shown in FIG. On the upper surface of the bulging portion 16, a pair of blades 3, 3 are arranged on the same circumference so as to face each other. The blade 3 is almost inverted L
The blade 3 is formed in a letter shape and is integrally formed with a terminal plate (not shown) arranged in the storage portion inside the bulging portion 16.
The base ends of the legs are bent upward from the terminal board,
The tip of each leg has a blade 18 that is bent inward.

Further, as shown in FIG. 2, a lock is provided on the upper surface of the bulging portion 16 of the upper adapter 4 to prevent the upper adapter 3 from rotating in the removal direction (counterclockwise rotation) with respect to the hook ceiling 2. The claw 19 is arranged on the same circumference as the pair of blades 3 and 3 so as to be retractable and retractable, and is arranged upstream of the blades 3 and 3 in the removal and rotation direction of the upper adapter 4. .

As shown in FIG. 3, a rectangular notch 20 is provided on a part of the peripheral edge of the circular flange 15, and a lock claw 19 is provided in the bulge 16 in the notch 20. A lock release button 21 for immersing is provided. Further, a cord outlet 23 for inserting a connection cord 22 for making an electrical connection with the instrument body 5 side shown in FIG. 1 is provided, and one end of the connection cord 22 is soldered to a terminal inside the bulging portion 16. It is connected to the board. The connection cord 22 is inserted into the cord outlet 23 and extends to the lower surface side of the upper adapter 4, and the other end of the connection cord 22 has a connector 24 for connection.
Is provided.

The reinforcing plate 13 is fixed to the upper surface of the circular flange portion 15 of the upper adapter base 12 by screws 25, 25, and is tightly provided on the outer peripheral edge of the upper surface of the circular flange portion 15 over substantially the entire circumferential direction. (See Figure 2). The reinforcing plate 1
The peripheral portion of the upper surface of 3 serves as a flat engagement receiving portion 26 of the upper adapter 4 that engages and disengages with the lower adapter 5.

Further, the closing plate 14 closes the hollow housing portion formed on the back side of the bulging portion 16, and is fixed to the back surface of the circular flange portion 15 by screws 27, 27 (see FIG. 3). .

The upper adapter 4 is attached to the hook ceiling 2 by supporting the upper adapter 4 by hand.
After inserting the pair of blades 3, 3 protruding from the upper surface of the bulging portion 16 into the wide portions 10, 10 of the pair of arc-shaped blade insertion openings 9, 9 of the hooking ceiling 2, respectively, the upper adapter 4 Is rotated clockwise, the upper adapter 4 is rotated clockwise with respect to the hook ceiling 2 and the pair of blades 3, 3
Move along the arc-shaped plug blade insertion openings 9 and 9 respectively, and the blade portions 4 and 4 of the pair of blades 3 and 3 are plugs on the inner back surface at the inner side of the pair of narrow portions 11 and 11 of the hooking ceiling 2. The blades are supported and mechanically attached to the blade receiving portions, respectively, and the blades 3 and 3 are electrically connected to the connection terminal plate provided in the blade receiving portion.

Further, when the bulging portion 16 of the upper adapter 4 is brought into contact with the lower surface of the hook ceiling 2, the lock claw 19 projected on the upper surface of the bulging portion 16 of the upper adapter 4 has the bulging portion 1.
When the pair of blades 3, 3 of the upper adapter 4 is rotated to the end of the narrow portions 11, 11 of the pair of blade insertion openings 9, 9 of the hooking ceiling 2, Lock claw 19
Coincides with the position of the wide portion 10 of the blade insertion opening 9, and is projected upward by the restoring force of a spring (not shown) to fit into the wide portion 10. In this state, the counterclockwise rotation of the upper adapter 4 with respect to the hook ceiling 2, that is, the rotation in the direction of detaching the upper adapter 4 from the hook ceiling 2 causes the peripheral edge of the lock claw 19 and the wide portion 10 of the blade insertion opening 9. When and are brought into contact with each other, they are locked and are prevented from coming off.

To remove the upper adapter 4 from the hook ceiling 2, push the lock release button 21 of the upper adapter 4 inward of the notch 20 to push the lock release button 21 so that the spring is biased. Against lock claw 19
Is pushed inward of the bulging portion 16 to be immersed therein, and the wide portion 10 of the lock claw 19 and the plug blade insertion opening 9 on the side of the hooking ceiling 2 is closed.
The collision with the peripheral edge of is eliminated. While pressing the lock release button 21 of the upper adapter 4 inward of the cutout portion 20, the upper adapter 4 is rotated counterclockwise with respect to the hooking ceiling 2, and the pair of blades 3, 3 of the upper adapter 4 are rotated. 3 is a pair of plug blade insertion ports 9 of the hook sealing 2
Then, the upper adapter 4 is removed from the hook ceiling 2.

Next, the lower adapter 5 provided on the instrument body 6 and detachably engaged with the upper adapter 4 will be described.

The instrument body 6 is provided with a light source (not shown), and as shown in FIG. 1, the instrument body 6 is provided with a cord 28 connected to the light source, and the tip of the cord 28 is for connecting the upper adapter 4 A connector 29 for connection which is detachably engaged with the connector 24 is mounted. Further, a through hole (not shown) for inserting the upper adapter 4 is bored in the central portion of the top plate 30 of the instrument body 6, and the lower adapter 5 is attached so as to coincide with the through hole. There is.

As shown in FIG. 1, the lower adapter 5 has a mounting plate 31 superimposed on the top plate 30 of the instrument body 6 and a lower adapter base 32 mounted on the lower surface thereof.
And the top plate 3 of the instrument body 6 in the center of the lower adapter base 32.
A circular cylindrical fitting hole 33 corresponding to the through hole formed at the center of 0 is formed.

As shown in FIGS. 4 and 5, the lower adapter base 32 is formed with overhanging portions 34, 34 on both left and right sides so as to face each other with the fitting hole 33 of the lower adapter 5 interposed therebetween. As shown in FIG. 6, inside the overhanging portions 34, 34, there are provided hollow storage portions 35, 35 formed continuously inside the overhanging portions 34, 34, respectively. On the inner surface of the fitting hole 33 in the left-right direction, locking claw through holes 36, 36 communicating with the left and right storage portions 35, 35 are provided. Storage part 3 inside the left and right overhanging parts 34, 34
Locking members 37 and 37 are fitted in the fitting holes 3 and 5, respectively.
The lower adapter 5 facing 3 is slidably fitted in the lateral direction. Note that FIG. 6 shows only one of them.

An upper locking claw 38 and a lower locking claw 39, which are arcuately concave in a plan view, are provided at the tip of the locking member 37 in two steps, the upper locking claw 38 having a tapered portion on the upper surface. 40 is formed, the lower surface is provided with a flatly formed locking portion 41, and the lower locking claw 39 is provided on the upper surface with the tapered portion 4.
2 is formed, and the locking portion 43 is formed flat on the lower surface.
Is provided. Further, a release knob portion 44 is integrally provided on the lower surface of the locking member 37 so as to project (see FIGS. 5 and 6).

As shown in FIG. 6, the left and right storage portions 35, 3
Spring housing recesses 46, 46 are provided inside the outer walls 45, 45 forming the outer edge of 5, respectively.
6 and 46, through the outer wall 45 and the rear end of the locking member 37, through holes 36, 36 for the left and right locking claws provided in the inner side surface of the fitting hole 33 at the center of the lower adapter base 32. Biasing springs 47 for biasing the left and right upper locking claws 38 and lower locking claws 39 from the respective sides are provided.

In the normal state, the locking claws 38 and 39 of the locking member 37 are projected from the locking claw through holes 36 provided on the inner peripheral surface of the fitting hole 33 by the biasing of the biasing spring 47. ing. Further, the rectangular guide holes 4 that connect the inside and the outside of the overhanging portions 34, 34 are formed on the lower surfaces of the left and right overhanging portions 34, 34.
8 and 48 are provided respectively, and the left and right locking members 3
The release knobs 44, 44 of 7 are inserted into the guide holes 48, 48 and project from the lower surface of the lower adapter 5. Then, by gripping the release knob portion 44 and moving it in both the left and right directions, the left and right upper locking claws 38 and the lower locking claws 39 slide backwards against the biasing forces of the biasing springs 47, 47. As a result, the locking claws 41, 41, 43, 43 retreat into the lower adapter base 32.

Further, as shown in FIGS. 4 to 6, at the outer sides of the lower surfaces of the left and right overhanging portions 34, 34, at least a part of their peripheral surfaces interferes with the release knob portions 44, 44, respectively. Upper locking claw 38 and lower locking claw 3 of both locking members 37
The lock position for locking 9 in a state of protruding with respect to the inner side surface of the fitting hole 33, and the peripheral surface thereof are both release knob portions 44, 4
4, the upper locking claws 38 and the lower locking claws 39 of both locking members 37 are switched between a lock release position that allows the upper locking claw 38 and the lower locking claw 39 to move in and out of the inner surface of the fitting hole 33. Locking members 49, 49 are provided rotatably.

As shown in FIG. 7, at the mounting position of the lock member 49 on the lower surface of the overhanging portion 34, a boss portion 50 serving as a rotation axis of the lock member 49 is integrally provided so as to project, and an upper surface of the boss portion 40 is provided. Is provided with a screw hole 51. In addition, a positioning dowel 52 for stopping the lock member 49 at the lock position.
Is provided on one side closer to the center than the boss portion 50, and a positioning dowel 53 for stopping the lock member 49 at the unlocked position is provided on the other side closer to the outer side than the boss portion 50. ing.

As shown in FIG. 5, the lock member 49 has a substantially fan shape in a plan view, and as shown in FIG. 7, the base end of the substantially fan shape is provided with a boss portion insertion hole 54 and has a diameter on one side. A finger hook 55 is projected on the upper surface along the tip of the, and a notch recess 56 is formed on the back surface along the tip of the diameter on the other side. The locking member 49 blocks the backward movement of the locking member 37 when the peripheral surface 49a of the locking member 49 interferes with the rear surface of the release knob portion 44.

As shown in FIG. 7, the lock member 49 is attached to the overhanging portion 34 by inserting a pressure spring 57, which is an annular leaf spring, into the boss portion 50 of the overhanging portion 34, and then the locking member 49. After inserting the boss portion insertion hole 54 of the boss portion 50 into the boss portion 50 and inserting the washer 59 into the fixing screw 58, the fixing screw 58 is attached to the screw hole 51 provided on the upper surface of the boss portion 50.
Install by screwing into.

The upper and lower portions of the periphery of the boss portion insertion hole 54 of the lock member 49 are sandwiched between the pressure spring 57 and the washer 59 so as to be rotatably mounted around the boss portion 50, and the pressure spring When the boss 50 is rotated around the boss 50, a suitable friction is applied so that the boss 50 does not move from the rotation position due to an impact other than the rotation operation.

Next, the operation of the lock member 49 will be described. FIG. 8 shows the rotation position of the lock member and the locking member 37.
It is a figure which shows the engagement relationship with the release knob part 44 of. FIG.
(A) shows the unlocked position of the lock member 49, and in the unlocked position, the peripheral surface 49 a of the lock member 49 is shown.
6 can move the locking member 37 shown in FIG. 6 backward with respect to the fitting hole 33 without interfering with the release knob 44, and the upper locking claw 38 and the lower locking claw 39 of the locking member 37 can be fitted into the fitting hole 33. It is possible to move in and out of the inner surface of 33.
In addition, a positioning dowel 53 projecting to the other side of the overhanging portion 34 on the outer side of the protruding portion 34 enters and abuts a notch recess 56 provided on the back surface along the tip of the diameter of the other side of the locking member 49, The lock member 49 is positioned at the lock release position.

When locking the release knob portion 44,
The finger hook 55 of the lock member 49 is pushed to push the lock member 49.
Is rotated counterclockwise in FIG. 8 around the boss 50. In FIG. 8A, when the lock member 49 is rotated counterclockwise, the cutout recess 5 provided on the back surface of the lock member 49 from the positioning dowel 53 projecting from the projecting portion 34.
6 is separated, and subsequently, the left side of the peripheral surface 49a, which is a part of the peripheral surface 49a of the lock member 49, abuts on the rear surface of the release knob portion 44 (see FIG. 8B).

When the lock member 49 is further rotated counterclockwise, the peripheral surface 49a of the lock member 49 pushes the rear surface of the release knob portion 44, whereby the release knob portion 44 is formed.
Is guided by the guide hole 48, the locking member 37 shown in FIG. 6 is pushed out to the fitting hole 33, and the lock member 4
The side portion of the finger hook portion 55 provided on the upper surface along the tip of the diameter on one side of 9 abuts on the positioning dowel 52 projecting to one side of the overhang portion 34, and the finger hook portion of the lock member 49. When 55 comes into contact with the positioning dowel 52, the rotation of the lock member 49 is restricted and the lock member 49 is positioned at the lock position (see FIG. 8C). At the lock position, the peripheral surface 49a of the lock member 49 contacts the release knob portion 44,
A state in which the locking member 37 shown in FIG. 6 is prevented from moving backward with respect to the fitting hole 33, and the upper locking claw 38 and the lower locking claw 39 of the locking member 37 are projected to the inner surface of the fitting hole 33. Lock to.

For example, the rotation position of the lock member 49 is shown in FIG.
In the case of the halfway state as shown in (b), by rotating the locking member 49 counterclockwise (in the locking direction) in FIG. 8B, the peripheral surface 49a of the locking member 49 is released. Locking member 3 while hitting the portion 44
7 is pushed toward the fitting hole 33 to lock the upper locking claw 38 and the lower locking claw 39 at the same time.
It can be locked in a state of protruding with respect to the inner surface of the.

When the lock of the release knob 44 is released, the lock member 49 may be rotated clockwise from the state of FIG. 8C to return to the unlocked position of FIG. 8A.

The lock member 49 is colored so that it can be easily distinguished from the overhanging portion 34 of the lower adapter base, and a matching mark is attached to the overhanging portion 34 corresponding to the position where the release knob 44 is locked. If you leave it, you can see the locked state more clearly.

Next, attachment and detachment of the instrument body 6 to and from the upper adapter 4 attached to the hook ceiling 2 will be described. The attachment of the instrument body 6 to the upper adapter 4 is performed by locking the lower adapter 5 attached to the instrument body 6 to the upper adapter 4.
The lock members 49, 49 provided on the left and right overhanging portions 34, 34 of the lower adapter 5 are moved to the unlocked positions shown in FIG. 8A, respectively.

When the circular flange 15 of the upper adapter 4 is aligned with the circular fitting hole 33 at the center of the lower adapter 5 and the instrument body 6 is pushed up, the upper adapter 4 is fitted into the fitting hole 33 of the lower adapter 5. At this time, the taper portions 40, 40 formed on the upper surfaces of the upper locking claws 38, 38 protruding so as to face the fitting hole 33 of the lower adapter 5 are the peripheral portions of the circular flange 15 of the upper adapter 4. To the housing portion against the bias of the biasing spring 47 that biases the rear end of the locking member 37 of the lower adapter 5 toward the fitting hole 33. The upper locking claws 38 and the lower locking claws 3 that have retracted into the inside 35 and are projected into the fitting hole 33 of the lower adapter 5.
9 simultaneously sinks into the through hole 36 for the locking claw, and the lower adapter 5
When the upper locking claws 38, 38 of the locking members 37, 37 are positioned above the circular flange portion 15 of the upper adapter 4, the locking members 37, 37 are pushed forward by the restoring force of the biasing springs 47, 47. As a result, the engagement receiving portions 26 on the upper surface of the peripheral edge of the circular flange portion 15 of the upper adapter 4 support the engaging portions 41, 41 on the lower surfaces of the upper engaging claws 38, 38, and the instrument body 6 integrated with the lower adapter 5 is formed. It is attached to the upper adapter 4 (see FIG. 9).

At this time, the circular flange portion 1 of the upper adapter 4
Since the lower adapter 5 is rotatable with respect to the periphery of 5,
The instrument body 6 can be arbitrarily rotated with respect to the ceiling and placed at a desired rotation position. Further, by connecting the connection connector 24 of the upper adapter 4 shown in FIG. 1 to the connection connector 29 of the instrument body 6, the instrument body 6 is electrically connected.

The example shown in FIG. 9 illustrates the attachment of the instrument main body 6 to the upper adapter 4 attached to the hook ceiling 2 when the hook ceiling 2 is an embedded type that does not relatively project from the ceiling surface 7. In this case, the lower locking claws 39, 39 of the lower adapter 5 are supported by the locking receiving portion 26 of the upper adapter 4.

In the case of the exposed type in which the hook ceiling 2 is largely projected from the ceiling surface 7, first, in the same manner as described above, the lock receiving portion 26 on the upper peripheral edge of the circular flange portion 15 of the upper adapter 4 is first. The upper locking claws 38, 38 of the lower adapter 6 facing each other are supported in the state shown in FIG. 9, and the instrument body 6 is further pushed up from this state.

When the instrument body 6 is pushed up, the lower engaging claws 39 of the lower adapter 5 are caused by the peripheral edge of the circular flange portion 15.
The taper 42 of the upper part of 39 is guided, and the lower adapter 5
Against the biasing springs 47, 47 for biasing the opposing locking members 37, 37 of the locking members 37, 37, the locking members 37, 37 are retracted into the storage portions 35, 35 on both sides, respectively. The upper locking claws 38 and the lower locking claws 39 of the locking members 37, 37 of the same are simultaneously immersed in the locking claw through holes 36, and the lower locking claws 39 of the locking members 37, 37 of the lower adapter 5, When 39 is located above the circular flange portion 15 of the upper adapter 4,
By the restoring force of the biasing springs 47, 47, the locking members 37, 37
Is pushed forward, and the circular flange portion 1 of the upper adapter 4
The locking receiving portions 26 on the upper surface of the peripheral edge of 5 support the locking portions 43, 43 on the lower surfaces of the lower locking claws 39, 39, and the instrument body 6 integrated with the lower adapter 5 is attached to the upper adapter 4 ( (See FIG. 10).

Then, the instrument body 6 with respect to the upper adapter 4
After installing, the left and right lock members 4 of the lower adapter 5
9 and 49 are respectively rotated to the lock position, the peripheral surfaces 49a and 49a of the lock members 49 and 49 are brought into contact with the rear surfaces of the release knob portions 44 and 44, respectively, and the storage portions of the locking members 37 and 37 are accommodated. 35, 35 is prevented from moving backward, and both upper locking claws 38, 38 and lower locking claws 39, 39 are locked in a protruding state.

By holding the state in which both the locking claws 38, 38, 39, 39 are projected from the inner surface of the fitting hole 33 of the lower adapter 5, the lower adapter 5 with respect to the locking receiving portion 26 of the upper adapter 4 is held. Since the engaged state of both upper locking claws 38, 38 or both lower locking claws 39, 39 is maintained, it is possible to prevent the instrument body 6 from being accidentally disengaged from the upper adapter 4.

To remove the instrument body 6 from the upper adapter 4, first, the left and right locking members 49, 4 of the lower adapter 5 are removed.
Rotate each 9 to the unlocked position {Fig. 8
See (a)}.

Next, the release knob portions 44, 44 exposed on the lower surfaces of the left and right overhanging portions 34, 34 are moved to the left and right outside of each other.

When the release knobs 44, 44 are moved to the left and right outside of each other, the locking members 37, 37 cause the biasing spring 4 to move.
The upper locking claws 38, 38 and the lower locking claws 39, 39, which have been moved back into the storage portions 35, 35 against the bias of the 7, 47 and projected into the fitting hole 33 of the lower adapter 5, They are respectively inserted into the engaging claw through holes 36, 36.

As a result, the engagement states of the upper locking claws 38, 38 or the lower locking claws 39, 39 of the lower adapter 5 facing the locking receiving portion 26 of the circular flange portion 15 of the upper adapter 4 are released. The instrument body 6 can be removed from the upper adapter 4 by moving the instrument body 6 downward.

[0059]

According to the lower adapter for a ceiling-mounted lighting fixture mounting apparatus of the present invention, after the lower adapter is attached to the upper adapter, the lock member provided on the lower surface of the lower adapter base is operated to set the lock position. When it turns to,
The lock member pushes the release knob toward the fitting hole while at least a part of the peripheral surface of the lock member interferes with the release knob, thereby preventing the backward movement of both locking claws when the lock member is in the lock position. As a result, the state in which both the locking claws are projected from the inner surface of the fitting hole is maintained, and the state in which both the locking claws of the lower adapter are engaged with the locking receiving portion of the upper adapter is maintained.
It is possible to prevent the instrument body from being accidentally detached from the upper adapter.

When the lock member provided on the lower surface of the lower adapter base is pivotally moved to the unlocked position, the peripheral surface of the lock member is moved to a position where it does not interfere with the backward movement direction of both locking claws provided on the lower adapter. By operating the release knob provided on the lower surface of the lower adapter base to move both locking claws backward from the inner surface of the fitting hole against the urging of the urging spring, The engagement state of both the locking claws of the lower adapter with respect to the locking receiving portion is released, and the instrument body can be removed from the upper adapter.

When the rotation position of the lock member is in a halfway state, by rotating the lock member in the lock direction, the peripheral surface of the lock member is pushed toward the fitting hole while hitting the release knob, Both locking claws can be reliably locked in a state of protruding with respect to the inner surface of the fitting hole, and it is possible to prevent the instrument body from being accidentally disengaged from the upper adapter.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a ceiling-mounted lighting fixture mounting device according to an embodiment of a lower adapter of the present invention.

FIG. 2 is a perspective view of the upper adapter as seen from the above upper side.

FIG. 3 is a perspective view of the upper adapter as viewed from the lower side of the same.

FIG. 4 is a perspective view of a lower adapter as viewed from the lower side.

FIG. 5 is a plan view of a lower adapter shown from the lower side.

FIG. 6 is a partial sectional view of a lower adapter.

FIG. 7 is a perspective view showing the attachment of the lock member to the lower adapter.

FIG. 8 is a diagram showing an engagement relationship between a rotation position of a lock member and a release knob.

FIG. 9 is a partially cutaway cross-sectional view of a ceiling-mounted lighting fixture mounting device when mounted on a hook ceiling (embedded type).

FIG. 10 is a partially cutaway cross-sectional view of a ceiling-mounted lighting fixture mounting device when mounted on a hook ceiling (exposed type).

[Description of sign]

 1 Lighting Fixture Mounting Device 2 Hook Ceiling 3 Plug Blade 4 Upper Adapter 5 Lower Adapter 6 Fixture Main Body 7 Ceiling Surface 8 Ceiling Base 9 Plug Blade Insertion Port 10 Wide Part 11 Narrow Part 12 Upper Adapter Base 13 Reinforcement Plate 14 Closure Plate 15 Circular Flange 16 Swelling 17 Hole 18 Blade 19 Lock claw 20 Notch 21 Lock release button 22 Connection cord 23 Cord outlet 24 Connector for connection 25 Screw 26 Lock receiving portion 27 Screw 28 Cord 29 Connector for connection 30 Heaven Plate 31 Mounting Plate 32 Lower Adapter Base 33 Fitting Hole 34 Overhang 35 Storage Part 36 Locking Claw Through Hole 37 Locking Member 38 Upper Locking Claw 39 Lower Locking Claw 40 Tapered Part 41 Locking Part 42 Tapered Part 43 Locking Part 44 Release Knob Part 45 Outer Wall 46 Spring Recessed Recess 47 Biasing Spring 48 Guide Hole 49 Lock Part Material 49a Circumferential surface 50 Boss portion 51 Screw hole 52 Positioning dowel 53 Positioning dowel 54 Boss insertion hole 55 Finger hook 56 Cutout recess 57 Pressure spring 58 Fixing screw 59 Washer

Claims (1)

[Claims] 1. A detachable fit-engaged with an upper adapter having a plug blade hooked on a hook ceiling on its upper surface,
In the lower adapter for a ceiling-mounted lighting fixture mounting device arranged on the fixture body side, a fitting hole for fitting the upper adapter into the lower adapter base is provided, and both inner side surfaces of the fitting hole are opposed to each other, and Locking claws that are detachably engaged with the lock receiving portion of the upper adapter are respectively arranged, and both of the locking claws are provided so as to be movable in and out with respect to the inner side surface of the fitting hole. An urging spring for urging the two locking claws to project from the inner surface of the hole is provided respectively, and the both locking claws are retracted from the inner surface of the fitting hole against the urging force of the urging spring. Release knobs are provided to expose the lower surface of the lower adapter base so as to retreat to the closed state, and at least a part of the peripheral surface of the lower adapter base interferes with the release knobs so that the locking claws are located inside the fitting hole. A lock position for locking in a state of protruding to the side surface, The lower adapter is a lock member that is switched between a lock release position that allows the two locking claws to move in and out of the inner surface of the fitting hole without the peripheral surface interfering with the two release knobs. A lower adapter for a ceiling-mounted lighting fixture mounting device, which is rotatably provided on the lower surface of the base.