JP4065092B2 - Fluorescent lamp socket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluorescent lamp socket (hereinafter abbreviated as a socket) in which a pair of sockets are used with a fluorescent lamp interposed therebetween, and more specifically, an improved creation of a contact means between a conductive piece and a lamp pin of this kind of socket. About.
[0002]
[Prior art]
Conventionally, as this type of socket, as shown in FIG. 10, a receiving plate 52 that receives the end of the lamp L and has a pin hole 53 through which the lamp pin LP passes is provided on the back side of the opening 51 provided in the front of the socket 50. Therefore, it is known to press the vicinity of the pin hole of the receiving plate by the contact portion of the front end of the leaf spring-like conductive piece 54 whose rear end is fixed to the socket. In this type of socket, the lamp is sandwiched between a pair of sockets facing each other with the lamp pin inserted into the pin hole and the end of the lamp pressed against the socket receiving plate. At this time, the end of the lamp pin penetrating the pin hole comes into contact with the contact portion of the conductive piece pressing the receiving plate against the inner wall of the socket, whereby the lamp pin and the conductive piece are electrically connected.
[0003]
[Problems to be solved by the invention]
The contact method of the lamp pin and the conductive piece in the socket is called a butt contact method. However, since the conductive piece contacts only the end of the lamp pin, the end of the lamp pin is uneven due to variations in the manufacturing process. In such a case, the contact area may become small and conduction may become unstable.
[0004]
In addition, the conductive piece presses the receiving plate before the lamp is mounted, but after the lamp is mounted, the lamp pin that penetrates the pin hole of the receiving plate contacts the receiving plate. There is a possibility that the receiving plate may not perform its function, and there is a problem that a coil spring (not shown in FIG. 10) to press the receiving plate must be provided separately.
[0005]
By the way, fluorescent lamp sockets used in domestic general-use lighting fixtures in Japan have long been widely used in combination with a movable receiving plate and a butt-contact type conductive piece as described above. On the other hand, in foreign countries, the contact method between the lamp pin and the conductive piece is not such a butt contact method, but a method (insertion contact method) in which the lamp pin is inserted into a receiving piece in which a pair of plate surfaces face each other is adopted. Japan's sockets are urged to switch to this method because of the standardization process.
[0006]
FIG. 11 shows an example of the socket of the above-described insertion contact system. Here, the insertion contact portion 61 is provided in the slit 62 opened at one end provided on the end surface of the socket 60, and the lamp L is connected to the lamp pin LP of the slit. A configuration is adopted in which the contact is inserted through the opening and is further slid into the insertion contact portion 61 along the slit. As is clear from this, in the socket adopting the plug-in contact method, the end face (receiving plate) of the socket does not move like the socket that is widely used in Japan.
[0007]
Therefore, when a socket that combines a movable receiving plate and a butt contact type conductive piece that is currently popular is switched to a socket that combines a fixed receiving plate and a plug contact type conductive piece as described above, the receiving plate However, there is a situation where the module dimensions for mounting the socket of the lighting fixture that had been set on the assumption that the socket is movable in the full-length direction must be changed, and there will be problems that require new costs such as remodeling costs. It becomes.
[0008]
[Means for Solving the Problems]
An object of the present invention is to provide a fluorescent lamp socket that solves the above-described problems of the prior art, and a receiving plate that receives the end of the lamp and has a pin hole through which the lamp pin passes is provided in front of the socket. From the diameter of the lamp pin, in the socket where the pin hole of this receiving plate should be pressed against the inner wall of the socket by the contact portion of the tip of the leaf spring-like conductive piece with the rear end fixed to the socket. It has a basic configuration in which a pair of plate surfaces are opposed to each other with a narrow interval and an insertion contact portion into which the lamp pin can be inserted into the receiving piece is provided at the contact portion of the conductive piece .
[0009]
According to the present invention, in the fluorescent lamp socket described above, a projecting portion narrower than the width of the main body of the conductive piece is provided near one end at the tip of the conductive piece, and required from the starting position of the projecting portion to the main body side of the conductive piece. By providing a cut in the width direction according to the width of the protruding portion at the place where the dimension has been retreated, the portion extending from the cut to the tip of the protruding portion becomes the insertion contact portion constituting portion, and this insertion contact portion constituting portion is defined in the full length direction of the conductive piece. It is characterized in that the insertion contact portion is formed by being raised at right angles to the plate surface of the conductive wire along the fold, and further folded back in a U shape from the middle portion .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the fluorescent lamp socket according to the present invention will be described with reference to the accompanying drawings. 1 and 2 are partially cutaway perspective views showing an example of the fluorescent lamp socket of the present invention. In the figure, reference numeral 10 denotes a socket body. The body 10 is configured in a case shape with the back surface opened, and an opening 11 is provided on the front surface to expose the receiving plate 20 by applying it from the back side.
[0011]
The receiving plate 20 functions to receive the end of the lamp L, and is provided with a pair of pin holes 21 and 21 through which the lamp pin LP penetrates in the center, and the opening 11 of the socket body 10 on the peripheral side. An overhang 22 is provided to prevent the cover from coming off when applied from the back side.
[0012]
On the other hand, reference numeral 30 in the figure denotes a lid that is covered by an open portion on the back surface of the socket body 10. In this embodiment, the conductive piece is clamped and fixed between the lid and the body 10.
[0013]
Reference numeral 1 in the figure denotes a conductive piece. The conductive piece 1 is configured in a leaf spring shape by an elastic material, and serves as a fixing means to the socket by sandwiching the rear end 6 bent in an inverted V shape between the socket body 10 and the lid 30. At the same time, the tip is pulled upward to form the contact portion 2 to the receiving plate 20 (see FIGS. 3 and 4).
[0014]
An insertion contact portion T is provided at the tip of the conductive piece 1, which characterizes the present invention (see FIG. 7). Here, the insertion contact portion T is formed integrally with the conductive piece 1 and is obtained by the following process.
(1) First, a projecting portion 3 narrower than the width of the main body of the conductive piece is provided near one end at the tip of the conductive piece 1 and the required dimension is retreated to the main body side of the conductive piece from the starting position of the projecting portion. By providing a cut 4 in the width direction according to the width of the protruding portion, a portion extending from the cut to the tip of the protruding portion is an insertion contact portion constituting portion T (see FIG. 8).
(2) Next, the insertion contact portion constituting portion T is pulled up at right angles to the plate surface of the conductive wire along the fold 5 in the full length direction of the conductive piece 1, and further inserted into the U shape from the middle portion. A contact portion T is formed.
[0015]
In the structure of the insertion contact portion T described above, the insertion contact portion is not only cut out of the material integrally with the conductive piece 1, but also when projecting two or more conductive pieces as shown in FIG. By making the three face each other, the blank portion on one side of the projecting portion is filled with the projecting portion of the other conductive piece, and the material loss is minimized.
[0016]
The rear end 6 of the conductive piece 1 fixed to the socket is connected to an external electric wire, and the means thereof is arbitrary, but here the electric wire C inserted from the electric wire insertion hole 12 provided on the front surface of the socket body 10. The terminal of the quick connection terminal type which inserts the front-end | tip of this between the front-end | tip of the rear end 6 of the electrically conductive piece 1 and the inner wall of a socket main body is illustrated (refer FIG.1, 2, 7).
[0017]
【The invention's effect】
The fluorescent lamp socket of the present invention having the above configuration has the following specific effects.
(1) Conductivity is achieved by inserting the lamp pin into the insertion contact portion provided on the conductive piece, not by contact between the end of the lamp pin and the conductive piece. Always good conduction is achieved.
(2) As a result of the lamp pin being inserted into the insertion contact portion provided on the conductive piece, the contact portion of the conductive piece presses the receiving plate even when the lamp is mounted (see FIG. 4), so that the lamp is securely clamped. The auxiliary coil spring for pressing the backing plate is unnecessary, and the structure of the socket can be simplified.
(3) Since the receiving plate moves as usual while adopting the plug-in contact method, the module dimensions for mounting the socket of the luminaire set on the assumption that the receiving plate is movable in the full length direction are not changed. In addition, it is possible to switch to a socket with a plug-in contact system that conforms to international standards, and no modification of the lighting fixture is required.
(4) In the case of the conductive piece as in the second invention, the conductive piece and the insertion contact portion are integrated to ensure electrical contact reliability, and there is no material loss when the conductive piece is cut out from the material. It is prevented from occurring.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view of a fluorescent lamp socket of the present invention.
FIG. 2 is a partially cutaway perspective view showing a state in which the receiving plate of the fluorescent lamp socket according to the present invention is retracted.
FIG. 3 is a cross-sectional view of a fluorescent lamp socket according to the present invention.
FIG. 4 is a cross-sectional view showing a state in which the receiving plate of the fluorescent lamp socket according to the present invention is retracted.
FIG. 5 is a perspective view of the fluorescent lamp socket of the present invention observed from the back side.
FIG. 6 is a perspective view of the fluorescent lamp socket of the present invention observed from the front.
FIG. 7 is a perspective view of a conductive piece of the fluorescent lamp socket according to the present invention.
FIG. 8 is a plan view of a main part in a developed state of the conductive piece of the fluorescent lamp socket according to the present invention.
FIG. 9 is a plan view of a main part before cutting out a conductive piece of the fluorescent lamp socket according to the present invention.
FIG. 10 is a perspective view of a prior art fluorescent lamp socket.
FIG. 11 is a front view of a different prior art fluorescent lamp socket.
[Explanation of symbols]
L Lamp LP Lamp pin T Insertion contact part 1 Conductive piece 2 Contact part 10 Socket body 11 Opening 20 Receptacle plate 21 Pin hole

Claims (1)

The end of the lamp (L) is received and a receiving plate (20) provided with a pin hole (21) through which the lamp pin (LP) passes is applied from the back side of the opening (11) provided in the front of the socket, and the rear end is attached to the socket. The diameter of the lamp pin (LP) is obtained by making the vicinity of the pin hole of the receiving plate (20) into a socket to be pressed against the inner wall of the socket by the contact portion (2) at the tip of the leaf spring-like conductive piece (1) fixed to the socket. A fluorescent lamp socket comprising a receiving piece with a pair of plate surfaces facing each other with a narrower interval, and having an insertion contact portion into which the lamp pin can be inserted into the receiving piece at the contact portion (2) of the conductive piece (1) And a protrusion (3) narrower than the width of the main body of the conductive piece (1) is provided at one end of the conductive piece (1), and the main body of the conductive piece from the start of the protrusion (3). In the place where the required dimensions receded By providing a cut (4) in the width direction corresponding to the width of the protruding part (3), the part from the cut (4) to the tip of the protruding part (3) is the insertion contact part constituting part (T). The component part (T) is raised at right angles to the plate surface of the conductive piece (1) along the fold line (5) in the full length direction of the conductive piece (1), and further folded back into a U shape from the middle part. A fluorescent lamp socket comprising an insertion contact portion.

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