JPH0343757B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a fluorescent lamp socket, in which a plug holder for inserting and locking a terminal pin of a lamp is provided so as to be movable forward and backward, and when a straight tube lamp is installed, the plug holder This invention relates to a lamp socket in which the lamp socket is retracted.

[Technical background of the invention and its problems]

The conventional structure of this type of fluorescent lamp socket is
As shown in FIG. 2, a mounting base 2 projects from the lower part of the socket body 1, and a plug receiver 3 projects apart from the mounting base 2. This lamp socket has the advantage of being able to be made compact overall, but when the reflector plate 5 is attached with the socket bodies 1, 1 attached opposite to both ends of the fixture body 4, or when the reflector plate When removing 5, the end of the reflector 5 gets caught on the plug receiver 3 or the mounting base 2,
As shown in FIG. 2, the reflector plate 5 must be tilted and engaged at one end, and then the other end must be attached while pressing the stopper body 3, which reduces the workability of attaching and detaching the reflector plate 5. Moreover, the socket body 1, the plug holder 3, and the reflector 5 are easily damaged when the reflector plate 5 is attached or removed.Furthermore, the plug holder 3 is not perpendicular to the lamp support surface 6 of the socket body 1 when the lamp is attached, but is inclined. Then,
This has the drawback that a gap is created between the end face of the lamp and the plug holder 3, and the terminal pin of the lamp is exposed, which may result in poor contact with the contact piece.

Further, as shown in FIG. 3, the lamp support surface 8 of the socket body 7 is made flat, and the lamp mounting surface 11 of the plug holder 10 is provided in the opening 9 of the lamp support surface 8.
A lamp socket having a structure in which the two sides are on the same plane is known. With this structure, when attaching and detaching the reflector, the plug receiver 1
The reflector does not get caught in the socket 0, making it easy to attach and detach the reflector. However, when attaching the lamp, the end of the lamp must be inserted into the socket body 7 through the opening 9. The diameter must be larger than the outer diameter of the lamp base, which has the disadvantage that the entire socket becomes large.

[Purpose of the invention]

The present invention has been developed in view of the above points, and the entire socket can be made smaller, the reflector does not get caught on the stopper body etc. when attaching and detaching the reflector, it is easy to attach and detach the reflector, and it is easy to attach and detach the reflector when attaching the lamp. To provide a fluorescent lamp socket in which a plug holder is not tilted and contact is ensured when the lamp is installed.

[Summary of the invention]

The present invention has a lamp support and a mounting base protruding from the lamp support, and an opening is formed in the lamp support, and the upper surface of the mounting base is a horizontal plane that is flush with a part of the opening. A socket body, a plug holder which is biased in the protruding direction and fitted into the opening of the socket body so as to be freely advanced and retracted to form a terminal pin insertion hole for the lamp, and a plug holder which is provided in the socket body and is inserted into the opening of the socket body so as to be able to move forward and backward. and a contact piece that contacts the terminal pin inserted into the terminal pin insertion hole and locked,
The front surface of the mounting base of the socket body and the lamp mounting surface of the plug holder are made substantially the same surface, and the lamp is attached and removed by sliding the plug holder along the upper surface of the mounting base.

[Embodiments of the invention]

The configuration of one embodiment of the present invention is shown in drawings 4 to 6.
The diagram will be explained.

Reference numeral 20 denotes a socket body, which is formed into a box shape from an insulating material such as urea resin, and its back opening is closed with a cover 22 fixed with screws 21. This cover 22 is also molded from an insulating material such as urea resin. The vertical side surface of the main body 20 is approximately L-shaped, consisting of a lamp support part 24 whose front surface is a vertical lamp support surface 23, and a mounting base 25 protruding forward from the support surface 23 at the lower part of the lamp support part 24. is formed. An opening 26 is formed in this support surface 23, the lower part of this opening 26 and the upper surface of the mounting base 25 are formed on the same plane, and the upper surface of this mounting base 25 is formed as a horizontal guide surface 27, Both sides of this guide surface 27 are formed into inclined surfaces 28 which are inclined downward toward the mounting base 25 side.

Note that the upper surface of the support portion 24 of the socket body 20 is also formed in an arc shape.

Further, mounting grooves 29 are formed on both sides of the mounting base 25 of the socket body 20, and a wire insertion hole 30 is further formed on the front surface of the mounting base 25.

Next, 31 is a plug holder, with a lamp mounting surface 32 on the front.
The lower surface is formed into a substantially cylindrical shape having the main body 2.
It is formed into a horizontal sliding surface 33 that slides on the guide surface 27 of the mounting base 25 of No. 0. This plug receiver 31
An engagement edge 34 that engages with the inner peripheral edge of the opening 26 is protruded from the inner end of the opening 26, and is held in place by this engagement edge 34. With the engaging edge 34 of the plug holder 31 engaged with the inner peripheral edge of the opening 26, the lamp mounting surface 32 and the front surface of the mounting base 25 of the main body 20 are held substantially on the same plane.

Further, both sides of the plug receiver 31 and the upper surface are formed in an arc shape so as to be inclined downward toward the mounting base 25 side.

Further, the guide surface 27 on the upper surface of the mounting base 25 and the sliding surface 33 of the plug holder 31 that slides on the guide surface 27 are formed in a horizontal plane so as to be substantially parallel to the lamp axis.

Further, if necessary, a guide groove 35 is formed on either side of the plug receiver 31 or on both sides of the opening 26 of the socket body 20, and a guide groove 35 is formed on the other side to engage with the guide groove 35. form 36.

Further, in the lamp mounting surface 32 of the plug holder 31, there is a terminal pin insertion hole 37 into which a terminal pin of the lamp is inserted and locked.
is opened through.

Further, a contact piece 3 having elasticity is provided in the main body 20.
8 is provided, the upper end of this contact piece 38 is brought into contact with the inner surface of the plug holder 31, the plug holder 31 is urged forward by this contact piece 38, and the terminal pin is inserted through the terminal pin insertion hole 37. It is adapted to come into elastic contact with the terminal pin of the lamp 39.

Further, a self-locking terminal 41 is disposed on the lower surface of the mounting base 25 of the main body 20, facing a horizontal connecting piece 40 bent at the lower end of the contact piece 38,
The electric wire inserted through the electric wire insertion hole 30 is connected in a locked manner.

Note that the distance l from the terminal pin insertion hole 37 of the plug receiver 31 to the lower surface is set to be larger than one half of the diameter of the base of the lamp.

Next, the operation of the embodiment will be explained with reference to FIGS. 7 and 8.

The mounting grooves 29 formed in the mounting base 25 of the socket body 20 are engaged with the locking pieces 43 provided on both ends of the opening surface of the elongated box-shaped instrument main body 42, and the instrument main body 4 is attached.
Attach the socket body 20 to 2.

When attaching the reflector 44 in this state, the reflector 4
The notches 45 formed at both ends of the socket body 2
When attaching to the instrument main body 42 according to the 0 position,
Both sides of the upper surface of the plug receiver 31 are inclined downward, so that the notch 45 of the reflector 44 is aligned with the socket body 20.
The inner edge 46 of the notch 45 of the reflector plate 44 is fitted into the socket main body 20 without being caught on the step between the support part 24 and the plug receiver 31, and the inner edge 46 of the notch 45 of the reflector 44 is connected to the front surface of the mounting base 25 of the socket main body 20 and the plug receiver. Lamp mounting surface 3 of body 31
Since the mounting base 2 and the mounting base 2 are formed on substantially the same surface,
5 and the stopper holder 31, so it will not get caught, and the gap between the stopper holder 31 and the top surface of the mounting base 25 is small, preventing the reflective plate 44 from getting into the opening of the instrument body 42. The reflector plate 44 can be attached to the instrument main body 42 without tilting the reflector plate 44 or retracting the plug receiver 31.

When installing the lamp, the terminal pin insertion hole 37 of the plug holder 31 of one socket is inserted into the terminal pin insertion hole 37 of the one end of the lamp, and while the plug holder 31 of one socket is retreated, the terminal pin insertion hole 37 of the plug holder 31 of one socket is inserted and locked. Terminal pin insertion hole 3 formed in the plug receiver 31 of the socket.
7, the other terminal pin is inserted and locked, and in this state, the plug holder 31 of one socket is advanced by applying force, thereby completing the mounting of the lamp. When the plug holder 31 moves back and forth, the sliding surface 33 of the plug holder 31 slides on the guide surface 27 of the mounting base 25, so the plug holder 31 is not tilted, and the terminal pin of the lamp and the contact piece 38 are not tilted. There will be no contact failure.

Next, the configuration of another embodiment will be explained with reference to FIG.

Guide surface 27 of mounting base 25 of socket body 20
By making the direction orthogonal to the advancing and retracting direction of the plug receiver 31 into a concave arc shape, and by making the sliding surface 33 of the plug receiver 31 into a convex arc-shaped surface that matches the concave arc-shaped guide surface 27, the plug receiver 31 is It is possible to advance and retreat without being tilted left and right, and to prevent the end of the reflection plate 44 from entering between the sliding surface 33 and the guide surface 27.

Further, as shown in FIG. 9, a guide groove 47 is formed in the sliding direction of the plug holder 31 on one of the guide surface 27 of the mounting base 25 and the sliding surface 33 of the plug holder 31, and on the other. By forming the guide protrusion 48 that engages the guide groove 47, the plug receiver 31 can be moved forward and backward without being tilted from side to side. This can prevent the edges from getting in.

Further, in the embodiment described above, the plug receiver 31 is biased in the protruding direction by the contact piece 38, but it may be biased by another spring.

〔Effect of the invention〕

According to the present invention, a mounting base having a horizontal upper surface that is flush with the opening in the lamp support is protruded from the lower part of the lamp support of the socket main body, and the mounting base is inserted into the opening of the socket main body so as to be freely advanced and retractable. Since the front surface of this mounting base and the lamp mounting surface of the plug holder are approximately on the same plane, when attaching the reflector to the appliance body with lamp sockets attached at both ends, the end of the reflector Since there is no place for the part to get caught, the reflector can be attached without tilting the reflector or pressing the stopper body, improving the workability of installing the reflector, and furthermore, the stopper body can be attached to the lamp. Since the lamp is not tilted, there is no gap between the end face of the lamp base and the plug holder, which prevents the terminal pin from being exposed and spoiling the appearance, and also prevents the contact between the terminal pin and the contact piece. There is no possibility of poor contact.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a conventional lighting device, Fig. 2 is a side view of the same, Fig. 3 is a perspective view of another conventional lamp socket, and Fig. 4 is a perspective view of a lamp socket showing an embodiment of the present invention. , FIG. 5 is a side view of the same as above, FIG. 6 is a sectional view of same as above, FIG. 7 is a side view of a part of the lighting fixture with the same lamp socket attached as above, FIG. Each figure is a perspective view of a lamp socket showing other embodiments. 20...Socket body, 23...Lamp support surface, 24...Lamp support part, 25...Mounting base,
26... Opening, 27... Guide surface, 31... Plug receiver, 32... Lamp mounting surface, 33... Sliding surface, 3
7...Terminal pin insertion hole.

Claims (1)

[Scope of Claims] 1. A lamp having a lamp support and a mounting base protruding from the lamp support, an opening being formed in the lamp support, and an upper surface of the mounting base flush with a part of the opening. a socket body formed in a horizontal plane; a stopper body fitted into the opening of the socket body so as to be biased in the protruding direction so as to be freely advanced and retractable, and forming a terminal pin insertion hole for the lamp; and a contact piece that comes into contact with a terminal pin inserted and locked in a terminal pin insertion hole of the plug holder, and the front surface of the mounting base of the socket body and the lamp mounting surface of the plug holder are substantially on the same plane. A fluorescent lamp socket featuring: 2. A patent characterized in that both sides of the upper surface of the plug holder are inclined toward the mounting base, and the upper surface of the mounting base and the lower surface of the plug holder that slides on the mounting base are formed approximately parallel to the lamp axis. A fluorescent lamp socket according to claim 1. 3. The fluorescent lamp socket according to claim 1, wherein the lower surface of the plug receiver and the upper surface of the mounting base are sliding guide surfaces that engage with each other.