JP4103553B2 - Socket for fluorescent lamp - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluorescent lamp socket. In particular, the present invention relates to a contact configuration of a socket for a straight tube fluorescent lamp having a so-called R17D base.
[0002]
[Prior art]
The conventional socket is as follows. That is, provided with a socket body of an insulating, with the retractable female component 20 shown in FIG. 4 of the insulating receding during movably mounted forward when the fluorescent lamp mounting remove the socket body, the slits in the advancing and retreating receiving fixture 20 And a pair of metal swing metal fittings 30 that are loosely inserted into the slits and are swingably mounted. The swing metal fittings 30 include a contact part 31 and a wiring part 32 , and the contact part 31 Is located on the fluorescent lamp side and detachably press-contacted with the electrode terminal of the lamp, the wiring portion 32 is located on the non-fluorescent lamp side beyond the slit, and the concave portion 35 on the outer side of the swing metal fitting 30. and the swing center to against the forward and backward receiving fixture 20, the retractable bracket as 20 and the thin spring material forming the pressure between the contact portion electrode terminal resistance to the swinging between the swing bracket 30 This is a socket for fluorescent lamps
[0003]
[Problems to be solved by the invention]
In the prior art, the distance between the oscillation center and the electrode part is shortened, the oscillation range (rotation angle range) involving the spring margin of the thin spring material is large, and a large force may be required for oscillation, the portion consideration the reliability lacks such becomes a factor of pullout force varies because the swing center is Tsu Ah in that far from the line of action of the force pulling against the pressing force when disengaging the electrode terminals of the lamp Hot. The present invention solves the above problems.
[0004]
[Means for Solving the Problems]
Therefore, in order to solve the above-mentioned problem, a projection that cannot penetrate through the slit near the base of the wiring portion of the swinging metal fitting and becomes a swinging center is formed. As a result, the distance between the swing center (protrusion) and the electrode portion is increased, the swing range (rotation angle range) associated with the spring allowance of the thin spring material is small, the swing is smooth, and the reliability is increased.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment of the present invention will be described with reference to FIGS. The socket includes an insulating socket body 10, and includes an insulating advance / retreat tool 20 that is movably attached to the socket body 10, moves forward when the fluorescent lamp 60 is attached, and moves backward when removed. 21 and includes a pair of metal swing fittings 30 that are loosely inserted into the slits 21 and are swingably mounted. The swing fitting 30 includes a contact portion 31 and a wiring portion 32, and The part 31 is located on the fluorescent lamp side and is detachably pressed with the electrode terminal 61 of the lamp. The wiring part 32 is located on the non-fluorescent lamp side beyond the slit 21 and is near the base of the wiring part 32 . the forming a projection 33 which can not evade the slit 21, the projections 33 into contact with the non-fluorescent lamp side inlet 22 of the slit 21, rocking of the projections 33 the oscillating bracket 30 Centering, positioning the retractable female component 20 and the thin spring member 40 to form a pressure between the resists swings the contact portion 31, the electrode terminal 61 between the swing bracket 30.
[0006]
When the base 62 of the fluorescent lamp is inserted, the electrode terminal 61 comes into contact with the contact portion 31 of the swing metal fitting 30 and swings against the spring force of the thin spring material 40 that forms pressure between the electrode terminals 61. The electrode terminal 61 is slid and attached to an appropriate position while rotating the metal fitting 30. When the fluorescent lamp is pulled out, a pulling force is applied to the contact portion 31 of the swing metal fitting 30 via the electrode terminal 61 of the base 62 of the fluorescent lamp. Since the projection 33 that cannot penetrate through the slit 21 near the base of the wiring portion 32 is in contact with the non-fluorescent lamp side entrance 22 of the slit 21, the projection 33 is the pivot center of the swing bracket 30. It becomes. For this reason, the distance between the rocking center (protrusion) 33 and the electrode portion 61 becomes long, the rocking range (rotation angle range) involved in the spring allowance of the thin spring material is small, and the rocking is smooth.
[0007]
【The invention's effect】
When the fluorescent lamp is pulled out by the lamp socket configured as described above, a pulling force is applied to the contact portion of the swing metal fitting through the electrode terminal of the base of the fluorescent lamp. Since the protrusion that cannot penetrate the slit near the base of the wiring portion is in contact with the non-fluorescent lamp side entrance of the slit, the protrusion becomes the swing center of the swing fitting. For this reason, the distance between the rocking center (protrusion) and the electrode part becomes long, the rocking range (rotation angle range) involved in the spring allowance of the thin spring material is small, and the rocking is smooth.
Further, since the swing center is provided at a point close to the line of action of the pulling force against the pressure contact force when the electrode terminal of the lamp is removed, the pulling force is surely connected to the swinging metal fitting so that the swinging is smooth. Thus, it is possible to provide a fluorescent lamp socket with improved reliability.
[Brief description of the drawings]
1 is a cross-sectional view of the main part of a socket according to the present invention;
FIG. 2 is a partial cross-sectional view showing a state where the swing fitting is mounted.
FIG. 3 is an external view of the entire socket.
FIG. 4 is a partial cross-sectional view of a conventional socket.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10; Socket main body 20; Advance / retreat tool 21; Oscillation metal fitting insertion slit 22; Non-fluorescent lamp side entrance 30; Oscillation metal fitting 31; Contact part 32; Wiring part 33;
34; thin spring force acting surface 35; swing metal fitting recess (swing center of the prior art)
40; thin spring material 60; fluorescent lamp 61; electrode terminal

Claims (1)

An insulating socket body is provided. The socket body includes an insulating advance / retreat tool that is movably attached to the socket body and moves forward when the fluorescent lamp is attached and retracts when the fluorescent lamp is removed. A pair of metal swing fittings that are inserted and swingably mounted; the swing fitting includes a contact portion and a wiring portion; and the contact portion is located on the fluorescent lamp side and is an electrode of the lamp The wiring part is detachably press-contacted with the terminal, the wiring part is located on the non-fluorescent lamp side beyond the slit, and a protrusion that cannot penetrate the slit is formed near the base of the wiring part, and the protrusion is formed into the slit. The protrusion is made to be in contact with the non-fluorescent lamp side entrance, and the protrusion is used as the swing center of the swing bracket, and the swing between the advancement / retraction tool and the swing bracket is resisted to swing between the contact portion and the electrode terminal. thin to form a pressure on Fluorescent lamp socket, characterized in that a root material.

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