JPH0345430Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a socket for a single-cap fluorescent lamp, such as a parallel tube type or a U-shaped tube type.

[Background technology] Conventionally, lighting fixtures equipped with single-cap fluorescent lamps have a structure in which the single-cap fluorescent lamp is inserted and removed while remaining parallel to the fixture body, so the work space is narrow and it is difficult to insert and remove the lamp. There was a risk of damaging the fluorescent lamp.

Therefore, we proposed a socket for a single-cap fluorescent lamp as shown in Utility Model Application No. 196953/1983 (Figs. 14 and 15). A plug holder 70 for attaching the cap of the single-cap fluorescent lamp 65 is attached to a base 71 so as to be rotatable around a support shaft 72, and a hook holder 73 fixed together with the base 71 is used to attach the cap of the single-cap fluorescent lamp 65. It locks the engagement protrusion 74 of the cap. The plug receiver 70 has a contact (not shown) that comes into elastic contact with the lamp pin of the single-cap fluorescent lamp 65, and is biased by the contact spring to engage the rotating hook 73 and the engaging protrusion 74.
Lamp supporting force can be obtained at the engagement part with the lamp.

In this structure, when the plug holder 70 of the single-cap fluorescent lamp 65 is tilted as shown in FIG.
After that, the single-cap fluorescent lamp 65 can be fixed in parallel to the mounting surface 75 as shown in FIG. This makes it easy to attach and detach the lamp.

However, since the hook holder 73 has a fixed angle, in order to enable the engagement protrusion 74 of the single-cap fluorescent lamp 65 to be engaged or disengaged from the hook holder 73 during attachment/detachment, it is necessary to attach the plug holder. The inclination angle α of 70 is, for example, about 35°. Therefore, it is not possible to make the lighting equipment thinner and smaller.

In order to solve this problem, we proposed the system shown in FIG. 16. This has a plug holder 80 mounted on a base 81 so as to be freely rotatable around a pivot shaft 82, and a rotary hook 83 mounted on the base 81 so as to be freely rotatable around a pivot shaft 84. be. The rotating hook 83 has a pair of hooks 83a that engage with the engaging protrusions 74 on both sides of the cap of the single-cap fluorescent lamp 65, and the hooks 83a are connected by a connecting piece 83c. Reference numeral 85 designates an operating posture control spring attached to the stopper receiver 80, which presses down the connecting piece 83c of the rotary hook 83.

According to this configuration, since the rotating hook 83 rotates, the inclination angle of the stopper receiver 80 can be made small.

However, when the plug holder 80 is tilted downward for mounting the lamp as shown in FIG. 16A, the plug holder 80
When an abnormal pushing up force K occurs on the rotating hook 8,
The connection piece 83c of No. 3 is pushed by the plug receiver 80 and the connection piece 83c of No.
It tilts and rotates at a steep angle as shown in Figure B. Therefore,
Even if an attempt is made to insert the single-cap fluorescent lamp 65 as shown in FIG. 16C, the engagement protrusion 74 hits the back surface of the catch claw 83a, making it impossible to insert it.

[Purpose of invention]

The purpose of this invention was to reduce the rotation angle when attaching and detaching the lamp, thereby making the lighting equipment thinner and more compact.The purpose of this invention was to create a single-base design that would allow the lamp to be easily attached and detached by preventing the rotating hook from falling and rotating. An object of the present invention is to provide a socket for a fluorescent lamp.

[Disclosure of invention]

The socket for a single-cap fluorescent lamp of this invention is provided with a body into which the cap of the single-cap fluorescent lamp is fitted, and a plug holder having a contact point that makes elastic contact with the lamp pin of the cap, and the plug holder is rotatable. A rotary hook having a supporting base, a pair of hooking claws, and a connecting piece connecting these hooking claws is provided, and the rotating hook has a base that supports the plug receiver. It is rotatably supported around a rotation support shaft that is parallel to the rotation support shaft, and these pair of hook claws engage with the engagement protrusions on both sides of the base of the single-cap fluorescent lamp in a locking direction. and each of the pair of hooking claws has a contact portion that contacts the surface on the tip end side of the lamp pin of the engagement protrusion and is opened at a predetermined angle with respect to the engagement surface, and the plug holder and the rotating hook are held at a non-inclined angle. and an angle regulating means for holding at an inclined angle, which engages with the connecting piece of the rotating hook in a state where the plug holder is about to rotate in the non-inclined direction without rotating the rotating hook, and rotates the rotating hook. A stopper protrusion is provided on the outer surface of the body to prevent the hook from rotating in the direction of preventing the hook from coming off.

According to the configuration of this invention, since the stopper receiver is made rotatable, the single-cap fluorescent lamp can be attached to and removed from the stopper receiver in an inclined state, and the lamp attachment and removal work can be easily performed. In addition, since the rotating hook can be rotated around the pivot shaft parallel to the plug receiver, when the engaging protrusion of the single-cap fluorescent lamp is engaged with and disengaged from the rotating hook, the angle of the single-cap fluorescent lamp can be tilted. The angle is small. Therefore, the lighting equipment can be made thinner and smaller.

In addition, a stopper protrusion that engages with the connecting piece of the rotary hook and prevents the rotary hook from rotating in the direction of locking the rotary hook is provided on the outer surface of the body of the plug holder. Even if a force in the direction of tilting back is applied to the body, the engagement between the stopper protrusion and the connecting piece prevents the rotary hook from falling and rotating. Therefore,
To easily attach a single-cap fluorescent lamp at all times without a hooking claw of a rotary hook being in a state in which the engaging protrusion of the single-cap fluorescent lamp cannot be inserted. When attaching a single-cap fluorescent lamp, the contact portion of the hook is pushed by the engagement protrusion, so that the rotary hook rotates before the plug holder. Therefore, engagement between the stopper protrusion and the connecting piece is avoided, and the rotating hook can be rotated in the direction of preventing it from coming off.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 13. In FIG. 1, reference numeral 1 denotes a base, which is fixed to a lighting fixture through a mounting hole in a flange 1a or the like. A plug holder 2 is attached to a base 1 so as to be rotatable around a pivot shaft 3, and a cap 5 of a single-cap fluorescent lamp 4 is fitted into the plug holder 2. The single-cap fluorescent lamp 4 has four bulbs 4a arranged in parallel. An engaging protrusion 6 and a positioning protrusion 7 are protruded from the cap 5, and a rotating hook 8 that engages with the engaging protrusion 6 is attached to the base so as to be freely rotatable around a pivot shaft 9. It is attached to 1. A connecting piece 8 of a rotary hook 8 is attached to the plug receiver 2.
c and hold these rotary hooks 8 and plug receivers 2.
An operating attitude control spring 10 is attached to the operating position control spring 10 for regulating the operating angle of the unit 2.

FIG. 2 is an exploded perspective view of the base 1, the stopper receiver 2, and the rotating hook 8. The base 1 is formed in a U-shape, and the stopper piece 1b is bent. The rotating hook 8 has a pair of hooks 8a, a contact portion 8b, and a connecting piece 8c.

FIG. 6 is a perspective view of the plug receiver 2 in an assembled state, and FIG. 7 is an exploded perspective view thereof. The plug receiver 2 is the body 1
1 and a power receiving block 12, and an operating attitude control spring 10 is attached thereto. The body 11 has a cylindrical portion 11a into which the cap 5 of the single-cap fluorescent lamp 4 is fitted, and a pair of engagement protrusion introduction grooves 13 and a positioning protrusion introduction groove 1.
4 and a power receiving block fitting recess 15 on the bottom surface.
is provided. Two stopper protrusions 30 are provided on the outer surface of the body 11, the end surfaces 30a of which engage with the connecting pieces 8c of the rotary hook 8. Power receiving block 12
A U-shaped fixed spring 16 is fitted onto the outside, and by press-fitting into the receiving block fitting recess 15 of the body 11, the tongue piece 16a of the fixed spring 16 is fitted into the body 11.
It bites into the inner surface of the body and becomes fixed. In this way, the power receiving block 12 can be attached to the body 11 by simply being press-fitted into the body 11 from above, and assembly can be easily automated.

The operating attitude control spring 10 includes a spring portion 10a forming a bent portion 10f, and a U-shaped folded mounting piece 1.
0b, a contact piece 10c that corresponds to the stopper piece 1b (FIG. 2) of the base 1, and a locking sound generating piece 10d.
e is provided. The operating attitude control spring 10 is configured by sandwiching the wall portion 11b of the body 11 between the folded mounting pieces 10b and connecting the hole 10e to the protrusion 11 of the body 11.
It is fixed to the body 11 by engaging with c. In addition, the operating posture control spring 10 and the stopper piece 1b of the base 1
This serves as a means of regulating the angle.

As shown in FIG. 8, the power receiving block 12 has a butt type lamp connection function using the contacts 20 and contact springs 21, and a lead wire quick connection function using the quick connection tongues 22a, which are integrated into a compact unit. That is, the power receiving block 12 has a lamp pin insertion hole 18.
The terminal box 19 has four contacts 20, a contact spring 21, a terminal plate 22, a back plate 23, and a fixing spring 16 housed therein.
The terminal plate 22 has a quick-tie tongue piece 22a for connecting lead wires.
and a positioning hole 22b, and a positioning hole 22b.
is fixed to the back plate 23 by fitting into the terminal plate positioning pin 23a of the back plate 23. The fixed spring 16 includes a tongue piece 16b that engages with the engagement step 19a of the terminal box 19, a tongue piece 16c that comes into elastic contact with the bottom surface of the back plate 23 to eliminate a fitting gap, and a tongue piece 16c that bites into the body 11. It has a tongue piece 16a for use.

The operation of attaching and detaching the lamp to the socket having the above structure will be explained. In FIG. 9A, the stopper receiver 21 is held at a predetermined inclination angle by the contact piece 10c of the operating attitude control spring 10 engaging with the stopper piece 1b of the base 1. In FIG. The rotating hook 8 has a connecting piece 8c
(FIG. 1) is pressed against the upper surface of the plug holder 2 by the operating posture control spring 10, so that the hooking claw 8a is regulated at an angle facing forward. In this state,
Insert the base 5 of the single-cap fluorescent lamp 4 into the body 11 of the plug holder 2 (in the direction of arrow A).

By this insertion, the contact portion 8b of the rotary hook 8 is pushed by the engagement protrusion 6 of the base 5, and the rotary hook 8 is rotated downward (in the direction of arrow p) (FIG. 9B).
The operating attitude control spring 10 is configured such that the rotating hook 8 rotates to a certain extent and the connecting piece 8c of the operating attitude controlling spring 10 rotates to a certain extent.
0, the biasing direction is reversed and the rotating hook 8 is biased in the hooking direction (downward). During this rotation, the locking sound generating piece 10d located at the center of the operating attitude control spring 10 jumps over the connecting piece 8c of the rotating hook 8 and generates a locking sound.

In this manner, after the single-cap fluorescent lamp 4 is pushed in and temporarily held by the rotating hook 8, the single-cap fluorescent lamp 4 is pushed upward (in the direction of arrow B). As a result, the single-cap fluorescent lamp 4 enters the holding state (the ninth
Figure C).

When removing the single-cap fluorescent lamp 4, the single-cap fluorescent lamp 4 is tilted downward (in the direction of arrow D) as shown in FIG. 9D, and the single-cap fluorescent lamp 4 is pulled out.

The fixation of the single-cap fluorescent lamp 4 in the state shown in FIG. 9C will be explained with reference to FIGS. 10 and 11. Contact spring 21 of power receiving block 12 (eighth
If the force pushing the lamp pin 25 (Fig. shall be. For this reason, the engaging protrusion 6 of the cap 5
Another point of contact D is created between the rotary hook 8 and the rotary hook 8.
At this time, at the contact point D, a force F equivalent to (l ₁ /l ₂ )×4P is generated. Therefore, the force relationship at point C is as shown in Fig. 11, and is set to satisfy the following condition so that the relationship is 4Pcosθ>F'sinθ.

4Pcosθ＞F′sinθ 4Pcosθ＞l ₃ /l ₄・l ₁ /l ₂ 4Psinθ l ₂ l ₄ /l ₁ l ₃ >tanθ In this way, the single-base fluorescent lamp 4 is attached and detached, but the plug receiver 2 Since it is rotatable, the single-cap fluorescent lamp 4 can be attached to and detached from the plug holder 2 in an inclined state, and the lamp attachment and detachment work can be easily performed. In addition, since the rotating hook 8 can be rotated around the pivot shaft in the same direction as the plug receiver 2, when the engaging protrusion 6 of the single-cap fluorescent lamp 4 is engaged with and disengaged from the rotating hook 8, The inclination angle of the single-cap fluorescent lamp 4 can be small. 19th
In the proposed example shown in the figure, the inclination angle α was approximately 35°, but in this embodiment, it can be set to, for example, approximately 9°.
Therefore, the lighting equipment can be made thinner and smaller.

Preventing the rotating hook 8 from falling and rotating is performed as shown in FIG. 13. That is, as shown in FIG. 13A, even if a force W in the direction of tilting back is applied to the plug holder 2 with the lamp installed and removed, the connection between the stopper protrusion 30 of the body 11 and the connecting piece 8c of the rotary hook 8 The engagement prevents the rotating hook 8 from falling and rotating. Therefore, the hook piece 8c of the rotary hook 8 does not become unable to be inserted into the engaging protrusion 6 of the single-cap fluorescent lamp 4, and the single-cap fluorescent lamp 4 can always be easily mounted.

When installing the single-cap fluorescent lamp 4,
As shown in the figure, when the contact portion 8b of the hook piece 8a is pushed by the engagement protrusion 6, the rotary hook 8 rotates before the stopper receiver 2. Therefore, engagement between the stopper protrusion 30 and the connecting piece 8c is avoided, and rotation of the rotating hook 30 in the direction of preventing it from coming off is possible.

In the above embodiment, the stopper protrusion 30 is a protrusion that extends to the mouth of the body 11, but the reason why it is formed long is to facilitate the production of the mold, and the stopper protrusion 30 is a protrusion that extends to the mouth of the body 11. It is sufficient to form only the portion of the tool 8 that corresponds to the connecting piece 8c.

[Effect of idea]

In the socket for a single-cap fluorescent lamp of this invention, the plug holder is rotatable, so the single-cap fluorescent lamp can be attached to and removed from the plug holder in an inclined state, making it easy to attach and remove the lamp. In addition, since the rotating hook can be rotated around the pivot shaft parallel to the plug receiver, when the engaging protrusion of the single-cap fluorescent lamp is engaged with and disengaged from the rotating hook, the angle of the single-cap fluorescent lamp can be tilted. The angle is small. Therefore, the lighting equipment can be made thinner and smaller.

In addition, a stopper protrusion that engages with the connecting piece of the rotary hook and prevents the rotary hook from rotating in the direction of locking the rotary hook is provided on the outer surface of the body of the plug holder. Even if a force is applied to the body in the direction of tilting back, the engagement between the stopper protrusion and the connecting piece causes the rotary hook to fall down and rotation is prevented. Therefore.
To prevent a hook piece of a rotary hook from becoming impossible to insert an engaging protrusion of a single-cap fluorescent lamp, and to easily mount the single-cap fluorescent lamp at all times. When attaching a single-cap fluorescent lamp, the contact portion of the hook is pushed by the engagement protrusion, so that the rotary hook rotates before the plug holder. Therefore, the engagement between the stopper protrusion and the connecting piece is avoided, and the rotary hook can be rotated in the direction to prevent it from coming off.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is an exploded perspective view thereof, and Fig. 3 is a front view thereof.
Figure 4 is a sectional view taken along the - line in Figure 3, and Figure 5 is a cross-sectional view of Figure 3.
6 is a perspective view of the plug receiver, FIG. 7 is an exploded perspective view of the plug receiver, FIG. 8 is an exploded perspective view of the power receiving block, and FIG. 9 is a cross-sectional view of the power receiving block. is also an explanatory diagram of the attachment/detachment operation, the first
Figure 0 is an enlarged side view of the engaging portion between the rotating hook and the engaging protrusion, Figure 11 is an explanatory diagram of the acting force at the contact point between the rotating hook and the engaging protrusion, and Figure 12 is The figure is also an explanatory diagram of the operation of preventing the rotary hook from falling and rotating, Figure 13 is an explanatory diagram of the normal operation of the rotary hook when inserting a lamp, and Figure 14 is a lamp of a proposed example of a socket for a single-base fluorescent lamp. FIG. 15 is a side view showing a state in the middle of attachment, FIG. 15 is a side view showing a state in which attachment and detachment are completed, and FIG. 16 is an explanatory diagram of the fall and rotation of the rotary hook due to the abnormal force. DESCRIPTION OF SYMBOLS 1... Base, 2... Plug receiver, 4... Single cap fluorescent lamp, 5... Cap, 6... Engaging protrusion, 8... Rotating hook, 8a... Hook claw, 8b... Hit part,
8c...Connection piece, 10...Movement posture control spring, 1
1...Body, 12...Power receiving block, 20...
Contact, 21...Contact spring.

Claims (1)

[Scope of utility model registration request] A body into which the base of a single-cap fluorescent lamp is fitted, a plug holder having a contact that makes elastic contact with the lamp pin of the base, a base for rotatably supporting the plug holder, and a pair of hooking claws. and a connecting piece connecting these hooking claws, and the rotating hook has a rotating support shaft parallel to a rotating support shaft of the plug holder, the pair of hooking claws being attached to the base. The pair of hooking claws are rotatably supported around the single-cap fluorescent lamp, and the pair of hooking claws engage with the engaging protrusions on both sides of the base of the single-cap fluorescent lamp in a direction to prevent them from coming off, and each of the pair of hooking claws is An angle regulating means is provided, which has a contact portion that contacts a surface on the tip end side of the lamp pin of the engagement protrusion and is opened at a predetermined angle with respect to the engagement surface, and holds the plug holder and the rotating hook at a non-inclined angle and an inclined angle. , engages with the connecting piece of the rotary hook in a state in which the plug receiver is about to rotate in the non-tilting direction without rotating the rotary hook to prevent rotation of the rotary hook in the direction of preventing removal; A single-cap fluorescent lamp socket having a stopper protrusion protruding from the outer surface of the body.