JPH0740500B2 - Fluorescent lamp socket - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp socket provided with an interlock structure for closing a lighting circuit by mounting a fluorescent lamp and opening the lighting circuit by detaching the fluorescent lamp.

[Conventional technology]

The ceiling-embedded fluorescent lamp fixture shown in FIGS. 8 and 9 is a type in which the socket is not exposed. In these figures, 1 is a chassis, 2 is a ballast, 3 is a reflector, 4 is a support metal fitting, 5 Is a decorative screw for attaching the reflector, 6 is a socket attached to the support fitting 4, and 7 is a rod-shaped fluorescent lamp. The reflector 3 is made of metal, and the end plate 3a covers the socket 6 and the lamp insertion port.
Has 3b. In this type of equipment, a fluorescent lamp has a lamp pin projecting from a base at one end and is inserted into one of a pair of sockets 6 through a lamp insertion port 3b for connection, and then a lamp pin protruding from the base at the other end is connected to the other end. The socket is designed to be inserted and connected through the lamp insertion port 3a of the socket, and to be removed by the reverse procedure. Therefore, at the time of attaching / detaching the lamp as described above, there is a high possibility that the exposed lamp pin will contact the end plate 3a of the reflection plate 3 around the socket 6 or the like, thereby causing the fluorescent light without passing through the ballast. There was a problem that power was supplied to the lamp.

On the other hand, for example, in a high-power type fluorescent lamp fixture of 110 W or more, a socket provided with an interlock structure is used in order to ensure safety when attaching and detaching the lamp. A conventional socket used for this type of high-power type instrument is shown in FIGS. 10 to 13. In the socket body indicated by 11 in these figures, a lamp mounting body 12 is attached so as to penetrate through the front surface thereof so as to be movable in the axial direction thereof, and the lamp mounting body 12 is provided with a spring as shown in FIG. It is always biased forward by 13. In addition, in FIG.
Reference numeral 11a is a stopper portion for preventing the lamp mounting body 12 from coming off forward. A pair of pin receiving fittings 14 (see FIG. 10) for the filament circuit are movably attached to the lamp mounting body 12, and these are constantly biased forward by separate springs 15 as shown in FIG. ing. Pin receiving bracket
When mounting the fluorescent lamp 16 on the lamp mounting body 12,
As shown in FIG. 12, it is pushed into the lamp mounting body 12 while being pushed by the lamp pin 16a to bend the spring 15. And a spring that constantly urges the pair of pin receiving fittings 14.
Filament circuit lead wires 17 and 18 are separately connected to 15, and these lead wires 17 and 18 are shown in FIG. 11 and FIG.
As shown in the figure, it is pulled out from the end surface of the socket body 11 on the mounting side. An interlock actuator 19 is movably attached to the lamp mounting body 12. This actuator
19 is when the fluorescent lamp 16 is mounted on the lamp mounting body 12,
It is pushed into this lamp 16. Further, as shown in FIG. 11, the socket main body 11 has a built-in fixed contact piece 20 forming a switch for interlock and a movable contact piece 21 brought into contact with and separated from the fixed contact piece 20. The movable contact piece 21 is engaged with the interlock actuator 19, and by its elasticity, always urges the interlock operator 19 forward and at the same time is positioned away from the fixed contact piece 20. And these two contact pieces 2
The interlock lead wires 22 and 23 are separately connected to 0 and 21, respectively, and these lead wires 22 and 23 are shown in FIGS.
As shown in the figure, it is pulled out from the end surface of the socket body 11 on the mounting side.

Such a socket is the base of the fluorescent lamp 16 to be installed.
Since the interlock actuator 19 is pushed by 16b,
Accordingly, the movable contact piece 21 contacts the fixed contact piece 22 to close the lighting circuit. Then, when the both ends of the fluorescent lamp 16 are removed from the pair of opposed sockets on one side, the movable contact piece 21 is removed.
Due to its elasticity, the interlock actuator 19 is pushed back to the front, and at the same time, it is separated from the fixed contact piece 20, so that the lighting circuit is opened. Therefore, when the fluorescent lamp 16 is attached / detached by opening / closing such a lighting circuit, the lamp pin 16 is erroneously
Safety is secured when a contacts metal parts such as the end plate 3a around the socket.

[Problems to be solved by the invention]

However, according to the conventional socket as described above, the lamp mounting body 12 and the spring 13 are required as the components for stably holding the fluorescent lamp 16, and the pin receiving fitting 14 is used for the lamp pin 16a. Is a structure that requires a pair of springs 15 as parts for contacting and holding the lead wires 18 and 19 for wiring.
Since 22 and 23 are required, there are problems that the number of parts is large and the structure is complicated. Not only that, 4
Since the lead wires 18,19,22,23 are used for connecting the socket and the lighting device, each lead wire 18,19,22,2
There is also a problem that it is necessary to connect the 3 to each other by using a connecting tool such as a crimp terminal, and thus wiring is troublesome.

Therefore, an object of the present invention is to provide an interlock structure with a small number of parts, a simple structure, easy wiring, and a rational arrangement of parts in the socket body so that the socket body does not become large. Another object of the present invention is to provide a fluorescent lamp socket.

[Means for solving problems]

Therefore, in order to solve the above problems, the present invention provides a pair of lamp pin insertion holes on the front surface of a socket body, and inserts a pair of filament circuit lead wires on the socket mounting side of the socket body with respect to these insertion holes. A hole and a pair of interlock lead wire insertion holes located between them are provided. In the socket body, one end is elastically contacted with the lamp pin insertion hole to individually close the lamp pin insertion hole, and the other end is opposed to the filament circuit lead wire insertion hole by itself. It incorporates a pair of filament circuit contact pieces made of leaf springs with terminals. Further, an interlock actuator that penetrates the socket body and is pushed by the fluorescent lamp is formed on the front surface of the socket body, and is a space between the pair of filament circuit contact pieces, and the socket is more than the lamp pin insertion hole. The socket body is movably mounted, and the socket body has a built-in spring for constantly urging the interlock actuator toward the front of the socket body. Moreover, in the socket body, a fixed contact piece for interlock made of a leaf spring, which is located in a space between the pair of filament circuit contact pieces and is smaller than the filament circuit contact piece, and Each has a built-in movable contact piece made of a leaf spring that is brought into contact with and separated from the fixed contact piece in association with the movement of the interlock actuator, and the other end portions of both of these contact pieces insert the interlock lead wire by themselves. The holes are provided with quick-connecting terminals that face each other.

[Action]

In the socket of the present invention, not only are the pair of filament circuit contact pieces and the pair of interlock contact pieces made of leaf springs, but the end portions of the socket body on the socket mounting side of these contact pieces are themselves. The number of parts can be reduced because it is a quick-connect type terminal formed by. When the stripped core wire of the wiring lead wire is inserted into the socket main body through the lead wire insertion hole, each quick-connect terminal elastically deforms to allow the core wire to pass through, and at the same time, to insert the lead wire. At the end of the step, the tip of the quick-connect terminal bites into the surface of the core wire to prevent the lead wire from being pulled out. Also,
By utilizing the space formed between the pair of filament circuit contact pieces, the interlock actuator and the pair of interlock contact pieces are disposed here, so that the space can be effectively used and the interlock actuator can be effectively used. It is not necessary to secure a special space in the socket body for disposing the interlock contact piece and the interlock contact piece, and the interlock actuator is arranged between the contact pieces for the filament circuit and the interlock. The lock contact piece and the filament circuit contact piece do not interfere with each other, and the arrangement is rational. The above-mentioned filament spring contact piece for the filament circuit allows the lamp pin of the fluorescent lamp to be inserted into the socket insertion hole due to its own elastic deformation, and is pressed against the lamp pin and coupled with the support by the lamp pin insertion hole. Keeps stable. When the fluorescent lamp is mounted, the interlock operator is pushed in by engaging with the base of the lamp, whereby the leaf spring interlocking movable contact piece elastically contacts the fixed contact piece due to its elastic force. . The lighting circuit is closed by the contact between the movable contact piece and the fixed contact piece. The spring urging the interlock actuator stores elastic force by mounting the lamp as described above, and pushes the interlock actuator back toward the front of the socket body when the lamp is removed. As a result, the interlock operator separates the movable interlocking contact piece from the fixed contact piece while elastically deforming it. Therefore, the lighting circuit is opened.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

In the figure, reference numeral 31 denotes a socket body made of an insulating material such as synthetic resin, which is formed by connecting a body portion 32 and a lid portion 33 with a screw (not shown). Reference numeral 34 in FIG. 1 is a screw hole. The socket body 31 is used, for example, by being attached to the luminaire shown in FIGS. 8 and 9, and 35 in FIGS. 1 to 3 indicates a mounting groove.

A pair of lamp pin insertion holes 36 are provided on the front surface of the main body 32 of the socket main body 31, and a pair of filament circuit lead wire insertion holes 37 is provided on the socket mounting side 31a having the mounting groove 35. And a pair of interlock lead wire insertion holes 38 are provided respectively. These insertion holes 37, 38 are provided in a line along the width direction of the socket body 31, and the pair of lead wire insertion holes 38 are located between the pair of lead wire insertion holes 37.

Not only that, as shown in FIG. 3, the gap Y between the pair of lead wire insertion holes 38 is wider than the gap X between the pair of lead wire insertion holes 38.
The pair of lead wire insertion holes 38 are surrounded by an annular step 39.

Inside the main body 32, as shown in FIG.
Partitions 40 to 44 are integrally provided in a. A filament circuit contact piece 45 is attached between the partition walls 40 and 41 and between the partition walls 43 and 44, respectively. The pair of contact pieces 45 is formed by bending a strip-shaped leaf spring as shown in FIGS. 1 and 5. One ends 45a of these contact pieces 45 elastically contact the lamp pin insertion holes 36 to individually close these holes, while the other ends face the lead wire insertion holes 37 by themselves. Slanted quick-connect terminal 45b
Is doing. The quick-connect type terminal 45b is connected to a lighting device (not shown) when the stripped core wire D of the wiring lead wire D is inserted into the socket body 31 through the lead wire insertion hole 37. The core wire d is elastically deformed in the direction of the arrow to allow the core wire d to pass therethrough, and the tip of the quick-connect terminal 43b bites into the surface of the core wire d at the time when the lead wire D is inserted to prevent the lead wire D from being pulled out. It is a thing.

Partition walls 41, 42 located in the space between the pair of contact pieces 45
A fixed contact piece 46 and a movable contact piece 47, each of which serves as an interlock switch, are separately mounted between the partition walls and between the partition walls 42 and 43. The pair of contact pieces 46, 47 are smaller than the filament circuit contact piece 45, respectively,
Each of the strip-shaped leaf springs is bent as shown in FIGS. 1 and 4. One end 46a of the fixed contact piece 46 is elastically engaged with a rib 49 of a guide portion 48 provided integrally with the main body portion 32 to be positioned, and the other end portion of the fixed contact piece 46 is one lead wire insertion hole by itself. Facing 38, a slanted quick-connecting terminal 46b is formed. One end 47a of the movable contact piece 47 is arranged so as to face the one end portion 46a, and has an elastic force always directed in a direction of contacting the one end portion 46a, and the other end portion has the other lead wire insertion hole 38. Facing each other and forming an oblique fast-connecting terminal 47b. The quick-connect terminals 46b and 47b of these contact pieces 46 and 47 are
Has a function equivalent to that of the quick-connect terminal 45b, and 50 in the figure is a groove for receiving the core wire d.

An interlock actuator 51 is provided in the main body portion 32 on the socket mounting side 31a with respect to the lamp pin insertion hole 36. The actuator 51 is made of synthetic resin and has the contact piece 45.
The guide portion 48 is provided as a guide in a space therebetween so as to be movable. As shown in FIG. 4, the actuator 51 is constantly urged forward by a spring 52 built in the socket body 31, whereby the tip end portion of the body portion 32.
Is projected from the front of. The operator 51 has an engaging portion 51a that engages with the one end portion 47a of the movable contact piece 47, and the one end portion 47a side of the movable contact piece 47 is engaged with the engaging portion 51a.
It is held so that it is always separated from the one end portion 46a of the fixed contact piece 46 by the force of 2.

The lead wire D for wiring is connected to the socket for a fluorescent lamp having such a configuration. This connection is for wiring lead D
It is simply carried out by inserting the stripped core wire d in (3) into the socket body 31 through the lead wire insertion holes 37, 38 by an automatic machine or the like. That is, by inserting the core wire d, the quick-connect terminals 45b, 46b, 47b allow the insertion of the wiring lead wire D while bending in the direction of the arrow in FIG. 6 due to the elastic force, and the insertion of the lead wire D is completed. At this point, the tips of the quick-connect terminals 45b, 46b, 47b bite into the surface of the core wire d. This automatically completes the connection of the wiring lead wire D and prevents the lead wire D from being pulled out. Therefore, it is not necessary to provide a lead wire for withdrawal connected to each contact piece 45 to 47 in this socket, and the wiring with the lighting device does not use a crimp terminal or the like, as described above. Simply by inserting the lead wire D, and
It can be done cleanly.

When the lamp pin F of the fluorescent lamp E is inserted into the lamp pin insertion hole 36 of this socket, one end portion 45a of the filament circuit contact piece 45 made of a leaf spring is elastically deformed to allow the insertion of the lamp pin F and the lamp pin F The fluorescent lamp E is stably held by being pressed against F. Simultaneously with the mounting of the fluorescent lamp E, the interlocking actuator 51 is pushed by the base G of the fluorescent lamp E against the biasing force of the spring 52. The one end portion 47a of the above is movable by the elastic force and elastically contacts the fixed contact piece 46. Therefore, the lighting circuit is closed by the contact between the movable contact piece 47 and the fixed contact piece 46.

When the fluorescent lamp E is removed from the mounted state of the lamp, the spring 52 pushes the interlock actuator 51 back toward the front of the socket body 31 accordingly, and the actuator 51 elastically deforms the movable interlocking piece 47 for interlock. Fixed contact piece 46
Pull away from. Therefore, since the lighting circuit is opened, the fluorescent lamp E can be safely removed even if the lamp pin F or the like comes into contact with the surrounding metal parts at that time.

Further, in the structure of this socket, as described above, the pair of filament circuit contact pieces 45 are made of leaf springs, and the one end portion 45a and the pair of lamp pin insertion holes 36 directly hold the fluorescent lamp E. Therefore, the number of parts required to hold the fluorescent lamp E can be reduced. Further, not only the pair of interlocking contact pieces 46, 47 together with the filament circuit contact piece 45 are made of leaf springs, but also the end of the socket mounting side 31a of the socket body 31 in each of the contact pieces 45, 46, 47. Since the portion is formed as the oblique fast-connecting terminals 45b, 46b, 47b made of itself, the lead wire for drawing can be omitted. In this way, since the number of parts can be reduced, the structure is simple, and the assembly can be performed easily and the cost can be obtained at a low cost.

Moreover, by utilizing the space formed between the pair of filament circuit contact pieces 45, the interlock actuator is provided here.
Since 51 and the pair of interlocking contact pieces 46 and 47 are arranged, the space can be effectively used. That is, it is not necessary to secure a special space for disposing the interlock actuator 51 and the interlock contact pieces 46, 47,
The size of the socket body 31 is not increased, and the arrangement of the interlock actuator 51 allows the end portions 46a and 47a of the interlock contact pieces 46 and 47 and the filament circuit contact piece 45 to be disposed.
The arrangement is rational without interfering with the one end portion 45a of the.

Further, due to the relationship between the dimensions X and Y between the lead wire insertion holes 37 and 38 and the annular step portion 39, an incorrect insertion of the wiring lead wire D can be prevented. In addition, as a means for obtaining such a guideline for inserting the lead wire D,
A portion corresponding to a portion surrounded by the annular step 39 may be a recess 39a as shown in FIG. Further, due to the relationship between the dimensions X and Y as described above, the lead wire insertion hole 38 into which the lead wire having the same pole that has no problem in insulation distance is inserted.
Since the lead wires are inserted closer to each other and the lead wire insertion holes 37 and 38 into which the lead wires having different polarities are inserted are separated from each other, it is preferable in order to secure an insulation distance between them.

〔The invention's effect〕

As described above, according to the present invention, in the structure having the interlock structure, the structure for holding the fluorescent lamp is simplified by providing the lamp pin insertion hole of the socket body and the pair of leaf spring-made filament circuit contact pieces. In addition to this, by providing a quick-connecting terminal integrally formed by a part of each of the contact piece and the interlocking contact piece, the lead wire for drawing can be omitted, and the number of parts can be reduced. And a simple structure, and the quick-connect type terminal facilitates wiring between the lighting device and
Moreover, since the interlock actuator and the pair of interlocking contact pieces are respectively disposed therein by utilizing the space between the pair of filament circuit contacting pieces, a special space is secured for disposing these. There is an effect that the socket can be effectively used, the socket can be prevented from becoming large, and the socket can be rationally arranged.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a rear view showing a cover portion removed, FIG. 2 is a perspective view, FIG. 3 is a front view, and FIG. 4 is a third view. 5 is a sectional view taken along the line AA in the figure, FIG. 5 is a sectional view taken along the line AB in FIG. 3, and FIG. 6 is a diagram showing the relationship between the lead wire and the quick-connect terminal. FIG. 7 is a sectional view showing a modified example of the present invention. 8 and 9 show a usage example of the socket, FIG. 8 is a cross-sectional view showing one end of the luminaire, and FIG. 9 is a partial cross-sectional view taken along arrow IX in FIG. 10 to 13 show a conventional example, FIG. 10 is a front view of a socket, FIG. 11 is a side view showing a partial cross section of the socket, and FIG. 12 shows a state in which a fluorescent lamp is mounted. FIG. 13 is a plan view showing a partial cross section, and FIG. 13 is a bottom view. 31 ... Socket body, 31a ... Socket mounting side, 36 ... Lamp pin insertion hole, 37 ... Filament circuit lead wire insertion hole, 37 ... Interlock lead wire insertion hole, 45 ... Filament circuit contact piece, 45a ... One end, 45b ... Quick-connect terminal, 51
... Interlock actuator, 52 ... Spring, 46 ... Fixed contact piece, 47
… Movable contact pieces, 46b, 47b… Quick-connect terminals.

Claims (2)

[Claims] 1. A fluorescent lamp socket having an interlock structure, wherein a pair of lamp pin insertion holes are provided on the front surface of the socket body, and a pair of filament circuit is provided on the socket mounting side of the socket body with respect to the insertion holes. A lead wire insertion hole and a pair of interlock lead wire insertion holes located between them are provided respectively, and one end of the socket body is elastically contacted with the lamp pin insertion hole to close them separately. Along with, the other end itself incorporates a pair of filament circuit contact pieces made of leaf springs that form a quick-connecting terminal facing the filament circuit lead wire insertion hole, and the front surface of the socket body, An interlock actuator that penetrates this and is pushed by the fluorescent lamp is installed between the pair of filament circuit contact pieces. Is movably mounted on the socket mounting side of the lamp pin insertion hole, and the socket body has a built-in spring for constantly urging the interlock actuator toward the front of the socket body, and A fixed contact piece for interlock made of a leaf spring, which is located in a space between the pair of filament circuit contact pieces and is smaller than the filament circuit contact piece in the socket body, and the interlock. A movable contact piece made of a leaf spring that is brought into contact with and separated from the fixed contact piece in association with the movement of the actuator is built in each, and the other end portions of these both contact pieces are themselves inserted into the interlock lead wire insertion hole. A fluorescent lamp socket characterized in that quick-connect terminals are formed so as to face each other separately. 2. A gap between the insertion holes, the pair of filaments, and the circuit lead wire insertion hole is wider than the gap between the pair of interlock lead wire insertion holes. The fluorescent lamp socket according to claim (1).