JPH0992020A - Upper adapter for use in ceiling-surface-mounted luminaire mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make locking member be unable to slide to prevent a luminaire body from being unexpectedly disconnected from an upper adapter by causing a lock control provided on the bottom surface of the upper adapter to be rotated to a lock position. SOLUTION: A lock control 16 on the lower surface of an upper adapter 4 is rotated to expose both ends of the rod part 50 of the lock control 16 from the lower surface of the upper adapter 4 and to make the ends coincide with unlocking projections 15, 15 opposed to each other across the center of the diameter of the upper adapter 4, i.e., to rotate the lock control 16 to a lock position. Engaging projections 53, 53 provided at both ends of the rod part 50 of the lock control 16 are simultaneously fitted and locked into engaging recesses 34, 34 provided on the inside surfaces of the unlocking projections 15, 15. Thus a luminaire body is prevented from being unexpectedly disconnected from the upper adapter 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to 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
The release operation part for releasing the engagement of the engagement part is provided so that the release operation part integrally provided in the engagement part is exposed from the opening formed on the lower surface of the engagement tool, so If you accidentally touch the release operation part after attaching the locking tool of the instrument body, the locking part will move backwards to the storage chamber side against the spring,
There is a possibility that the locking state of the locking tool with respect to the mounting tool is released, and the locking tool of the instrument body may come off from the mounting tool.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a locking claw for elastically releasably locking the locking claw of a lower adapter disposed on the instrument body side and a locking state of the locking claw. It is an object of the present invention to provide a ceiling-mounted lighting fixture attachment device that includes an upper adapter having a release operation unit to be released and includes locking means for locking the release operation unit to prevent the fixture body side from being accidentally detached from the upper adapter.

[0010]

In order to solve the above-mentioned problems, the upper adapter in the apparatus for directly attaching to the ceiling lighting fixture according to the present invention has a blade for hooking on a hooking ceiling on the upper surface of the upper adapter base. Locking members having locking claws that are detachably engaged with the lock receiving portions of the lower adapter that engages with the upper adapter are provided slidably in the radial direction of the upper adapter base, respectively. The locking claws are arranged so as to be retractable from both side portions of the upper adapter base, and the locking claws are urged to the locking members so as to project from the side portions of the upper adapter base. A biasing spring is provided, and a release protrusion that slides the locking claws into the recessed state from the peripheral surface of the upper adapter base against the bias of the biasing spring is integrally formed with the locking member. And above A lock position which is exposed on the lower surface of the adaptor and abuts on the release projections so that the respective locking members cannot slide at the same time. The lock operation body that is switched between the lock release position and the lock release position that allows the locking member to slide at the same time is rotatably provided on the lower surface of the upper adapter.

After inserting the pair of blades into the hook ceiling, the upper adapter is rotated to attach the upper adapter to the hook ceiling.

After the upper adapter is attached to the hook ceiling, the lock operation body rotatably provided on the lower surface of the upper adapter is rotated to the unlock position.

When the locking members slidably provided in the radial direction of the upper adapter base are slid inward in the radial direction, the locking claws project from the side portions of the upper adapter base with respect to the locking members. The locking claws of each locking member are recessed inward from the peripheral surface of the upper adapter base against the bias of the biasing spring that biases the upper adapter base to the lock receiving portion of the lower adapter. It is possible to engage the locking claws.

After the lower adapter arranged on the instrument body side is attached to the upper adapter, when the lock operating body on the lower surface of the upper adapter is rotated to the lock position, the lock operating body is integrated with each locking member. Abutting on the respective release projections, making the respective locking members unable to slide at the same time, locking the engagement state of each locking claw of the upper adapter with the locking receiving portion of the lower adapter,
Prevent the instrument body from accidentally coming off the upper adapter.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing one embodiment of a ceiling-mounted lighting fixture mounting device (hereinafter, lighting fixture mounting device) to which the upper adapter of the present invention is applied. The lighting fixture mounting device 1 is generally configured by an upper adapter 4 having a pair of plug blades 3, 3 hooked on a hook ceiling 2 on its upper surface.
And a lower adapter 6 arranged on the instrument body 5 side and detachably fitted and locked to the upper adapter 4.

The hook ceiling 2 is a conventionally known one that is attached to the ceiling surface 7. The hook ceiling 2 has a pair of arc-shaped blade insertion holes 9 around the center of the lower surface of the ceiling base 8.
9 is provided, and each blade insertion opening 9 has a wide portion 10 formed at the starting end in the clockwise rotation direction, and a narrow portion 11 continuous with the wide portion 10 to the end. 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. A conductive connection terminal plate (not shown) is provided.

The upper adapter 4 has a substantially cylindrical shape. As shown in FIG. 2, a pair of blades 3, 3 are arranged on the upper surface of the upper adapter 4 so as to face each other on the same circumference, and the hook sealing 2 is provided. A lock claw 12 for preventing rotation of the upper adapter 4 in the removal direction (counterclockwise rotation) is provided so as to be retractable on the same circumference as the blades 3 and 3, and the upper adapter 4 is removed. It is arranged upstream of one of the blades 3 and 3 in the rotating direction.

On the peripheral surface of the side portion of the upper adapter 4, locking claws 13, 13 which are detachably engaged with a locking receiving portion (not shown) of the lower adapter 6 which is engaged with the upper adapter 4. Are arranged on the left and right in the radial direction so as to be retractable. The left and right locking claws 13, 13 are provided on the left and right locking members 14,
The tips of 14 are integrally formed.

On the lower surface of the upper adapter 4, as shown in FIG. 3, release projections 15 and 15 which are operated to retract the left and right locking claws 13 and 13 into the peripheral surface of the upper adapter 4, respectively.
Are arranged on the left and right respectively, and the left and right release projections 15, 15
Is operated at the same time and a lock position in which the left and right release projections 15 and 15 cannot be operated at the same time. The lock operation body 16 rotates about the axial direction of the upper adapter 4. It is provided freely. The left and right release projections 15, 15 are provided on the left and right locking members 14, 14 described later.
Are integrally formed on the lower surface of each.

As shown in FIG. 4, the upper adapter 4 includes an upper adapter base 17 and a closing plate 18 attached to the lower surface of the upper adapter base 17,
Has a circular upper wall 19 forming the upper surface of the upper adapter 4, and a peripheral wall 20 forming a side peripheral surface of the upper adapter 4 along the peripheral edge of the upper wall 19.

On the rear surface of the upper wall 19 of the upper adapter base 17, as shown in FIG. 5, storage recesses 21 and 21 corresponding to the left and right locking members 14 and 14 are provided on the left and right in the diametrical direction, respectively. On the left and right of the peripheral wall 20, there are provided notch portions 22 and 22 for communicating with the left and right storage recesses 21 and 21, respectively, which are notched in a rectangular shape.

Further, as shown in FIG. 5, a terminal integrally provided with the blade 3 is provided near the center of the back surface of the upper wall 19 so as to correspond to each position of the pair of blades 3, 3. Terminal plate mounting recesses 24, 24 for mounting the plate 23 are provided respectively.

Further, on the lower side of the back surface of the upper wall 19 in FIG. 5, the lock claws 1 are provided corresponding to the positions where the lock claws 12 are arranged.
2 is provided with a lock disposing recess 27 in which a lock member 25 having 2 and a lock releasing button 26 are disposed, and the peripheral wall 20 communicates with the lock disposing recess 27 and is cut out into a rectangular shape for a lock button. A section 28 is provided.

On the upper surface of the back surface of the upper wall 19 in FIG. 5, there is provided a cord outlet 30 through which a connection cord 29 for making an electrical connection with the instrument body 5 is inserted.
On the back surface of the upper wall 19, screw holes 31 and 31 for attaching the closing plate 18 that closes the lower side of the upper adapter base 17 are provided near the diagonally upper right and diagonally lower left sides.

As shown in FIG. 5, in the recesses 21 and 21 on the left and right sides of the rear surface of the upper adapter base 17, the locking members 14 and 14 are respectively engaged with the locking claws 13 and 13 at the tips thereof toward the outside. 4 is provided so as to be slidable in the radial direction. The locking claw 13 of the locking member 14 is formed in an arcuate convex shape, and as shown in FIG. 4, a taper portion 32 is provided on the lower surface and a flat locking portion 33 is provided on the upper surface. Further, a release projecting piece 15 is integrally provided in the lower surface of the locking member 14 in the width direction, and as shown in FIG. 6, the inner surface of the release projecting piece 15 facing the center side of the upper adapter 4 is substantially formed. An arcuate engagement recess 34 is provided.

As shown in FIG. 5, the left and right storage recesses 21,
Inner wall 3 near the center of the upper adapter base 17 at 21
5, 35 and the rear ends of the locking members 14, 14 are provided with left and right locking members 14, 14 from the left and right claw insertion / removal notches 22, 22 provided in the peripheral wall 20 of the upper adapter base 17, respectively.
Biasing springs 36, 36 for urging the locking claws 13, 13 in a protruding state are provided respectively.

The upper wall 1 of the upper adapter base 17 shown in FIG.
As shown in FIG. 4, the terminal plate disposing recesses 23, 23 on the rear surface of the connector 9 are provided with plug blade through holes 37, 37 communicating with the upper surface of the upper adapter base 17, respectively, and the mounting screw holes 38, 38 are provided respectively. As shown in FIG. 4, the blade 3 has a substantially inverted L-shape and is integrally formed with the terminal plate 23 fixed inside the upper adapter base 17, and the base end of the leg portion 39 of the blade 3 is formed. Is bent upward from the terminal plate 23, the tip is projected from the upper surface of the upper adapter base 17 from the middle of the leg portion 39, and the blade portion 40 bent inward is attached to the tip of the leg portion 39. Have

The terminal plate 23 has the blades 3 of the terminal plate 23 inserted from the back surface side of the upper adapter base 17 into the blade holes 37, and the tip of the blade 39 from the middle of the leg portion 39 of the blade 3 is the upper adapter base 12. It is projected from the upper surface (see FIG. 4), and is fixed to the terminal-plate-provided recess 23 by being screwed into the mounting screw hole 38 of the terminal-plate-provided recess 23 with the screw 41 inserted into the terminal-plate 23 (FIG. 4). 5).

As shown in FIG. 5, one end of a connection cord 29 is connected to each of the terminal boards 23, 23 by soldering. As shown in FIG. 3, the other end of the connection cord 29 is inserted into the cord outlet 30 and extends to the lower surface side of the upper adapter 4, and is connected to the other end of the connection cord 29 as shown in FIG. A connector 42 is provided.

As shown in FIG. 5, the upper adapter base 17
The upper adapter base 1
The biasing force of the spring 43 is applied to the upper surface of the lock member 25 so that the lock claw 12 on the upper side is projected so as to be movable in the vertical direction of the upper adapter base 17, and the biasing force of the spring 43 is applied. A lock release button 26 for retracting the lock claw 12 into the upper adapter base 17 against the above is provided slidably in the radial direction of the upper adapter base 17.

Although not shown, the lock member 25 having the lock claw 12 is provided with a taper portion, and the lock release button 26 is provided with a taper portion adapted to the taper portion of the lock member 25. When the locking member 25 slides inward in the radial direction, the engagement surface between the taper portion of the lock member 25 and the taper portion of the lock release button 26 increases, so that the lock member resists the bias of the spring 43 and the upper adapter. The lock claw 12 of the lock member 25 is configured to move downward with respect to the base 17 and to be recessed in the through hole 44 on the upper surface of the upper adapter base 17 shown in FIG.

The closing plate 18 that closes the lower side of the upper adapter base 17 is a circular plate having a diameter substantially the same as that of the upper adapter base 17, and as shown in FIG. A circular support shaft hole 45 for rotatably supporting is provided, and on the left and right in the diametrical direction with the support shaft hole 45 in the center,
Release protrusions 1 provided on the lower surfaces of the left and right locking members 14, 14.
Rectangular through holes 46, at positions substantially corresponding to 5, 5 and 15, respectively.
46 are provided facing each other, and the cord outlet 30 shown in FIG.
A window hole 47 is provided at a position corresponding to
1 are provided with screw insertion holes 48, 48, respectively, and the notch 4 is formed in the peripheral edge substantially corresponding to the lock disposing recess 28.
9 are provided.

The lock operating body 16 is, as shown in FIG.
It is rotatably attached to the lower surface of the closing plate 18.
The lock operating body 16 is provided with a rod 50 arranged along the diametrical direction of the closing plate 18, a columnar protrusion 51 is provided at the center of the upper surface of the rod 50, and is attached to the center of the columnar protrusion 51. A screw hole 52 for use is provided. In addition, at both ends of the rod 50, arcuate engagement recesses 34, 34 provided on the respective inner side surfaces of the release projections 15, 15 projecting from the lower surfaces of the left and right locking members 14, 14. Are provided with engaging convex portions 53, 53 each having a circular arc convex shape.
As shown in FIG. 8, a knob portion 54 having concave portions on both sides is integrally provided in the middle of the lower surface of the rod portion 50.

Lock operation body 1 for the lower surface of the closing plate 18
As shown in FIG. 7, the attachment of 6 is performed by inserting the cylindrical projection 51 at the center of the upper surface of the lock operation body 16 from the lower surface of the closing plate 18 into the support shaft hole 45 provided at the center of the closing plate 18. From the upper surface of the plate 18, a washer 5 having a diameter larger than that of the support shaft hole 45.
After inserting the mounting screw 56 into the lock screw 5, the tip of the mounting screw 56 is screwed into the mounting screw hole 52 provided in the columnar projection 51 of the lock operating member 16, thereby
Is attached to the lower surface of the closing plate 18, and the lock operating body 16 is rotatably provided with respect to the lower surface of the closing plate 18 around the columnar projection 51 of the locking operation body 16 as an axis.

Closure plate 18 to which lock operation body 16 is attached
As shown in FIG. 4, the attachment of the upper adapter base 17 to the upper adapter base 17 is performed from the lower surface of the closing plate 18 to the screw insertion holes 48, 48 provided in the closing plate 18, respectively.
57, and the tips of the mounting screws 57, 57 are screw holes 3 provided in the lower surface of the upper adapter base 17 shown in FIG.
The closing plate 18 is attached to the lower surface of the upper adapter base 17 by being screwed into each of 1, 31 and the lower side of the upper adapter base 17 is closed by the closing plate 18, and a window hole is formed around the cord outlet port 30. 47 and the notch 49 on the lower side of the unlock button 26, and the left and right locking members 14, 1 from the left and right rectangular through holes 46, 46.
The release projections 15 and 15 integrally provided on the lower surface of the upper adapter 4 are exposed and provided on the lower surface of the upper adapter 4 (see FIG. 8).

The left and right locking members 14 and 14 are supported by the closing plate 18 on the lower surface side thereof and housed in the housing recesses 21 and 21 of the upper adapter base 17, respectively, and by the biasing springs 36 and 36. The left and right locking members 1 are urged toward both outer sides of the upper adapter 4 in the radial direction.
Release protrusions 15 and 15 integrally provided on the lower surfaces of
The base ends of the left and right rectangular through holes 46, 46 are abutted and regulated, respectively, and the locking claws 13, 13 of the left and right locking members 14, 14 are normally in the upper adapter base 17 in a normal state. It is provided in a state of protruding from the left and right claw insertion / removal notches 22 and 22 provided on the peripheral wall 20.

Further, as shown in FIG. 8, the rod portion 50 of the lock operation body 16 rotatably provided on the lower surface of the closing plate 18 is exposed from the lower surface of the closing plate 18 in the radial direction of the upper adapter 4. At the position where it does not interfere with the release projections 15 and 15 that are opposed to each other with the center interposed, that is, at the lock release position, the left and right locking members 14 and 14 are biased toward the center of the upper adapter 4 by an inward biasing spring 36. , 36 to resist the urging force
The left and right locking members are slidable inside, and at the positions where the base ends of the release projections 15 and 15 are in contact with and regulated by the inner edges of the left and right rectangular through holes 46 and 46, respectively. 14,14
The locking claws 13, 13 of the peripheral wall 2 of the upper adapter base 17 are
The left and right claw insertion / removal notches 22 and 22 provided at 0 are respectively immersed.

Further, as shown in FIG. 9, the rod portion 50 of the lock operating body 16 rotatably provided on the lower surface of the closing plate 18 is exposed from the lower surface of the closing plate 18 in the radial direction of the upper adapter 4. The engaging projections 53, 53 at both ends of the rod 50 interfere with the opposite release projections 15, 15 with the center in between, and the engaging projections 34 provided on the inner side surfaces of the release projections 15, 15, respectively. 34
In the lock position in which the locking projections 15 and 15 are simultaneously engaged with each other, the locking projections 15 and 15 are locked by the rod 50, so that the respective locking members 14 and 14 cannot slide inward toward the center of the upper adapter 4 at the same time. It is possible.

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

The instrument body 5 is provided with a light source (not shown), and the instrument body 5 is provided with a cord 57 connected to the light source on the upper surface thereof as shown in FIG.
A connection connector 58 that is detachably engaged with the connection connector 42 of the upper adapter 4 is attached to the tip of the. In addition, in the central portion of the top plate 59 of the instrument body 5, the upper adapter 4
A through hole 60 for inserting the through hole is formed, and the lower adapter 6 is attached so as to coincide with the through hole 60.

As shown in FIG. 10, the lower adapter 6 comprises a mounting plate 61 which is superposed on the top plate 59 of the instrument body 5 and a lower adapter base 62 which is mounted on the lower surface of the mounting plate 61. In the center of the adapter base 62, the instrument body 5
A circular insertion hole 63 corresponding to the through hole 60 formed in the center of the top plate 59 is formed.

The mounting plate 61 and the insertion hole 63 of the lower adapter base 62 are provided with engaging recesses 64 over the entire circumference at the upper part of the inner peripheral surface thereof. The engagement recess 64 is for fitting with the locking claws 13 of the upper adapter 4, and is formed by the lower adapter base 62 and the mounting plate 61. The lower part of the locking recess 64 is formed by a taper part 65 provided on the inner peripheral surface upper part of the insertion hole 63 on the lower adapter base 62 side, and the taper part 65 is the taper part 32 of the locking claw 13 of the upper adapter 4. Is formed so as to fit in the center of the radial direction. The upper part of the locking recess 64 is formed by the back surface of the peripheral edge portion of the insertion hole 63 on the mounting plate 61 side, and the flat surface of the locking claws 13, 13 of the upper adapter 4 is formed on the rear surface of the peripheral edge portion of the insertion hole 63. A flat first lock receiving portion 66 for contacting with 33, 33 to support the instrument body 5 is formed.

On the lower surface of the lower adapter base 62,
At the peripheral portion of the insertion hole 63, the locking claws 13, 1 of the upper adapter 4 are provided.
A flat second lock receiving portion 67 for contacting with the flat lock portions 33, 33 and supporting the instrument body 5 is formed.

The lighting fixture is attached as follows.

The upper adapter 4 is attached to the hook ceiling 2 by supporting the upper adapter 4 by hand.
A pair of arcuate blade inserts 9 and 9 of the ceiling 2 for hooking the pair of blades 3 and 3 protruding from the upper surface of the
When the upper adapter 4 is rotated in the clockwise direction after being inserted into each of the plugs, the upper adapter 4 is rotated clockwise with respect to the hook ceiling 2, and the pair of blades 3 and 3 are arcuate blade insertion openings. 9, a pair of blades 3, which respectively move along
3 is a pair of narrow portions 1 of the hook ceiling 2
The blades are supported and mechanically attached to the inner blade backsides of the inner backsides of the blades 1 and 11, and the blades 3 are electrically connected to the connection terminal plates provided in the blade receiving portions. It becomes a state.

Further, when the upper adapter 4 is brought into contact with the lower surface of the hook ceiling 2, the lock claw 12 projected on the upper surface of the upper adapter 4 is pushed into the through hole 44 against the bias of the spring 43. After this, the pair of blades 3 and 3 of the upper adapter 4 are connected to the narrow portion 1 of the pair of blade insertion ports 9 and 9 of the hooking ceiling 2.
When the lock claws 12 are rotated to the ends of the blades 1 and 11, the lock claws 12 are aligned with the positions of the wide portions 10 of the blade insertion opening 9, and are projected upward by the restoring force of the springs 43 to fit into the wide portions 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 removing the upper adapter 4 from the hook ceiling 2 causes the locking claw 12 and the peripheral portion of the wide portion 10 of the blade insertion slot 9 to rotate. 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 25 of the upper adapter 4 inward of the notch 49 to move the lock release button 25 toward the radial center of the upper adapter 4. Then, the lock member 26 is pushed down against the urging force of the spring 43, and in FIG. 4, the lock claw 12 is retracted into the through hole 44 of the upper adapter 4 and the lock claw 1
The contact between 2 and the peripheral edge of the wide portion 10 of the blade insertion opening 9 on the hook sealing 2 side is eliminated. While the lock release button 25 of the upper adapter 4 is being pushed inward, the upper adapter 4 is rotated counterclockwise with respect to the hook ceiling 2 and the pair of blades 3, 3 of the upper adapter 4 is hooked to the ceiling. After being moved to the wide portions 10, 10 of the pair of blade insertion openings 9, 9, the upper adapter 4 is removed from the hook ceiling 2.

The attachment of the instrument body 5 to the upper adapter 4 is performed by locking the lower adapter 6 attached to the instrument body 5 to the upper adapter 4.

As shown in FIG. 8, the lock operating body 16 of the upper adapter 4 is set at a position where it is exposed from the lower surface of the upper adapter 4 and does not interfere with the opposing release projections 15, 15, that is, the lock releasing position. As shown in, the upper adapter 4 is aligned with the circular insertion hole 63 of the lower adapter 6, and the instrument body 5 is pushed up.

The upper adapter 6 is inserted into the insertion hole 63 of the lower adapter 6.
The left and right locking claws 13 of the upper adapter 4 when inserting the
Tapered portions 32, 32 formed on the lower surface of 13 are guided by contacting with the peripheral edge portion of the insertion hole 63 of the lower adapter 6 and resist the urging of the urging springs 36, 36 of the upper adapter 4 shown in FIG. The left and right locking members 14, 14 slide inward of the upper adapter 4 and retract into the storage recesses 21, 21 respectively, and the upper adapter 4 is inserted into the insertion hole 63 of the lower adapter 6. Locking recess 6 provided on the inner peripheral surface of the insertion hole 63 of the lower adapter 6.
4 is pushed up to the position of 4, and at the same time, the locking members 14, 14 of the upper adapter 4 are pushed by the biasing springs 36, 36.
Is pushed outward in the radial direction by the return force of the upper adapter 4
Locking claws 13, 13 of the upper adapter 4 are projected into locking recesses 64 provided in the insertion hole 63 of the lower adapter 6, respectively.
To the flat locking portions 33, 33 of the locking claws 13, 13 of the flat first locking receiving portion 6 in the locking recess 64 of the lower adapter 6.
When the lower adapter 6 is supported by the upper adapter 4, the instrument body 5 integrated with the lower adapter 6 is attached to the upper adapter 4.

Next, the lock operating body 16 on the lower surface of the upper adapter 4 is rotated to expose both ends of the rod portion 50 of the lock operating body 16 from the lower surface of the upper adapter 4 so as to sandwich the radial center of the upper adapter 4. When the lock operating body 16 is rotated to the lock position, the engaging protrusions 53, 53 provided at both ends of the rod 50 of the lock operating body 16 are aligned. At the same time, they are fitted and locked in the engagement recesses 34, 34 provided on the inner side surfaces of the release projections 15, 15 respectively (see FIGS. 9 and 12).

This prevents the locking members 14, 14 from sliding inward toward the center of the upper adapter 4, and the locking claws 13, 13 cause the locking claws 13, 13 to move.
1, 21 is locked without retracting, locking state of the locking claws 13, 13 of the upper adapter 4 and the locking recess 64 of the lower adapter 6 is locked, and the upper adapter 4 moves to the instrument body 5
Prevent the side from accidentally coming off.

When the instrument body 5 is to be removed, the lock operating body 16 of the upper adapter 4 is turned to the unlocked position, and the left and right releasing projections 15 and 15 of the upper adapter 4 are pinched with fingers. When the lock members 14 and 14 are slid to the center along the holes 46 and 46, the locking members 14 and 14 compress the biasing springs 36 and 36 and retract into the storage recesses 21 and 21, respectively, and the locking recesses of the lower adapter 6 are retracted. Upper adapter 4 to 64
The engaging claws 13, 13 arranged on the above are disengaged, and the instrument body 5 is disengaged from the upper adapter 4. The above is the case where the hook ceiling 2 is an embedded type.

When the hook ceiling 2 is of the exposed type, as shown in FIG. 13, the tool body 5 has the locking claws 13, 13 of the upper adapter 4 as shown in FIG. From the state of being locked by the first locking receiving portion 66 of the concave portion 64, the device main body 5 is raised by further pushing it up, and the flat locking portion 33 on the upper surface of the left and right locking claws 13, 13 of the upper adapter 4 is raised. , 33 has a flat second inner peripheral edge of the lower surface of the lower adapter 6.
The lock receiving portion 67 is brought into abutting engagement (see FIG. 13).

The first lock receiving portion 6 of the lower adapter 6
6 and the second lock receiving portion 67 are both flat and have a substantially circular shape, the lower adapter 6 of the instrument body 5 can slide in the circumferential direction of the upper adapter 4 in the engaged state. The fixture body 5 can be rotated even after the attachment, and the position of the lighting fixture can be arbitrarily determined according to the ceiling.

[0056]

According to the upper adapter in the ceiling-mounted lighting fixture mounting apparatus of the present invention, the upper adapter is formed by engaging the locking claws of the lower adapter with the locking claws provided in the radial direction of the upper adapter. After mounting the lower adapter on the instrument body side, by rotating the lock operating body provided on the lower surface of the upper adapter to the lock position, it is integrally formed with each locking member having each locking claw of the upper adapter. At the same time, the lock operating body simultaneously comes into contact with the respective release projections exposed on the lower surface of the upper adapter to prevent the respective locking members from sliding, so that the locking receiving of the lower adapter is performed. Since the engagement state of each locking claw of the upper adapter with respect to the portion is locked, it is possible to prevent the instrument body side from being accidentally disengaged from the upper adapter.

By rotating the lock operating body provided on the lower surface of the upper adapter to the unlocked position, the lock operating body does not come into contact with the respective release projections provided on the lower surface of the upper adapter, and the lock operating body is not exposed to the unlocking position. It is possible to slide the locking members at the same time, and when each release projection is slid toward the center inward, each locking member moves toward the center inward against the bias of the biasing spring. Move and each locking claw will immerse from the peripheral surface of the upper adapter base,
The engagement state of each locking claw of the upper adapter with the locking receiving portion of the lower adapter can be released, and the instrument body side can be removed from the upper adapter.

A locking position where each locking claw of the upper adapter is slid from the peripheral surface of the upper adapter base into contact with each release projection and the respective locking members cannot slide at the same time. Since a lock operating body that is operated to switch between lock releasing positions that allow the respective locking members to slide at the same time without making contact with the release protrusions is rotatably provided on the lower surface of the upper adapter. The switching operation with respect to the lock operation body can be performed with one hand, and the switching operation can be easily performed because the lock operation body is only rotated.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a ceiling-mounted lighting fixture mounting device to which an upper adapter of the present invention is applied.

FIG. 2 is a plan view of the upper adapter.

[Fig. 3] Bottom view of the upper adapter

FIG. 4 is a perspective view showing the upper adapter disassembled into an upper adapter base and a closing plate.

FIG. 5 is a rear view of the upper adapter with the closing plate removed.

FIG. 6 is a perspective view of a release protrusion of the upper adapter.

FIG. 7 is an exploded perspective view of a main part of the upper adapter.

FIG. 8 is a perspective view of the upper adapter in the unlocked state as viewed from below.

FIG. 9 is a perspective view of the upper adapter in a locked state as viewed from below.

FIG. 10 is a sectional view of the lower adapter.

FIG. 11 is a partially cutaway side view of a ceiling-mounted lighting fixture mounting device showing a state where the fixture main body is attached to the upper adapter.

FIG. 12 is a partially cutaway side view showing a mounting state of a ceiling-mounted lighting fixture mounting device with respect to an embedded hook ceiling.

FIG. 13 is a partially cutaway side view showing a mounting state of a ceiling-mounted direct lighting fixture mounting device with respect to an exposed hook ceiling.

[Explanation of symbols]

 1 Lighting Fixture Mounting Device 2 Hooking Ceiling 3 Plug Blade 4 Upper Adapter 5 Instrument Main Body 6 Lower Adapter 7 Ceiling Surface 8 Ceiling Base 9 Plug Blade Insertion Port 10 Wide Part 11 Narrow Part 12 Lock Claw 13 Locking Claw 14 Locking Member 15 Release protrusion 16 Lock operation body 17 Upper adapter base 18 Closure plate 19 Upper wall 20 Circumferential wall 21 Storage recess 22 Claw insertion / removal notch 23 Terminal plate 24 Terminal plate mounting recess 25 Lock member 26 Lock release button 27 Lock mounting recess 28 Notch for lock button 29 Connection cord 30 Cord outlet 31 Screw hole 32 Tapered portion 33 Locking portion 34 Engagement recess 35 Inner wall 36 Energizing spring 37 Plug blade through hole 38 Mounting screw hole 39 Leg portion 40 Blade portion 41 screw 42 connector for connection 43 spring 44 through hole 45 support shaft hole 46 through hole 47 window hole 48 screw insertion hole 49 notch 50 rod 51 Cylindrical protrusion 52 Mounting screw hole 53 Engagement convex part 54 Knob part 55 Washer 56 Mounting screw 57 Cord 58 Connector for connection 59 Top plate 60 Through hole 61 Mounting plate 62 Lower adapter base 63 Insertion hole 64 Engagement concave part 65 Tapered portion 66 First lock receiving portion 67 Second lock receiving portion

Claims (1)

[Claims] 1. An upper adapter having a plug blade hooked on a hooking ceiling on an upper surface of an upper adapter base, and a locking claw removably engaged with a locking receiving portion of a lower adapter engaging with the upper adapter. Locking members are provided so as to be slidable in the radial direction of the upper adapter base, and the locking claws are arranged so as to be retractable from both sides of the upper adapter base. Bias springs for biasing the locking claws to project from the side portions of the upper adapter base are provided respectively, and the locking claws are provided against the circumferential surface of the upper adapter base against the bias of the biasing springs. A release protrusion that slides in a state of being retracted from the above is integrally formed with each of the locking members, is exposed on the lower surface of the upper adapter, and is provided so as to contact each of the release protrusions. Same sliding of members The lock operation body that is switched between a lock position that makes it impossible to slide the lock release member and a lock release position that allows the respective locking members to slide at the same time without contacting the release protrusions. An upper adapter for a ceiling-mounted lighting fixture mounting device, which is rotatably provided on the lower surface of the adapter.