JP4507662B2 - Fluorescent light socket - Google Patents

Description

  The present invention relates to a fluorescent lamp socket having a 4-pin base such as a ring-shaped fluorescent lamp and a single-end compact fluorescent lamp.

  A conventional fluorescent lamp socket is shown in FIG. FIG. 11A is a plan view of a conventional fluorescent lamp socket, and FIG. 11B is a cross-sectional view taken along line AA of FIG. As shown in FIG. 11, a movable piece 50 that has a spring property and contacts the peripheral surface of the lamp pin, and a fixed piece 51 that is disposed on the side of the movable piece 50 on the peripheral surface of the lamp pin and is formed integrally with the movable piece 50. Four contact terminals 53 each having a fixing portion 52 provided on the fixing piece 51 are respectively incorporated into lamp pin insertion holes 55 provided on the socket body 54. The fixing portions 52 arranged in the adjacent lamp pin insertion holes 55 are in a positional relationship facing each other or apart from each other as shown in FIG.

  As another configuration method, the socket body is composed of a plurality of parts, and the contact terminals are sandwiched between them.

In addition, there is a lamp socket that prevents the lamp pin from being eaten by the thermal contraction of the socket and falling into the phenomenon of excessive insertion and removal of the lamp pin (Patent Document 1). In this case, the diameter of the lamp pin insertion hole is increased so that the lamp pin can move relatively. Further, there is a fixed piece on the back side of the movable piece of the lamp pin connection terminal to which the lamp pin is connected.
JP 2003-243115 A

  As shown in FIG. 12, there are two types of street gauges for 4-pin sockets defined by the IEC: pitches that are both narrower (gauge B2) and wider (gauge A1) than allowed by the actual lamp. Is prepared. This figure shows a state when the centers of the gauges A1 and B2 are aligned and overlapped. In other words, the gauge pin passes through the area where the actual lamp cannot pass. However, the back surface of the fixed portion of the contact terminal necessarily comes into contact with the socket body. Therefore, the fixed part cannot move.

  That is, as shown in FIG. 13 which is a BB cross section of FIG. 11, the movable piece 50 can bend in the direction of the arrow, but it is bent because there is a molded product behind the fixed piece 51 integral with the fixed portion 52. I can't. Therefore, the movable piece 50 in contact with the gauge A1 can be bent and inserted, and the fixed piece 51 in contact with the gauge B2 cannot be bent and cannot be inserted. Further, as shown in FIG. 14, when the fixed portion 52 is separated, the gauge B2 can be inserted, but the gauge A1 cannot be inserted.

  Therefore, if the arrangement of the fixing portion as shown in FIG. 11 is adopted, a harmful effect occurs when dealing with variations in gauges and actual lamp pins. First, when the fixing parts are configured to face each other, the insulation between them becomes thin and it is difficult to ensure the strength. On the other hand, when the positional relationship is separated and the variation of the gauge and the actual lamp pin is made to correspond, the contact terminals and the socket body are enlarged.

  As described above, as a solution to the problem, there is one in which the socket body is composed of a plurality of parts as described above. However, the increase in the number of parts and the assembly process causes an increase in cost. Moreover, in patent document 1, although it can respond to the change of the pitch between lamp pin insertion holes, since a fixed piece exists in the back | inner side of a movable piece, the whole shape becomes long and cannot be reduced in size.

  Accordingly, an object of the present invention is to provide an inexpensive fluorescent lamp socket that is compact and has good assembling workability while being not affected by variations in gauge pins defined by international standards.

In order to solve the above-mentioned problem, the fluorescent lamp socket according to claim 1 of the present invention comprises a socket body provided with four lamp pin insertion holes, has a spring property, and a movable piece that contacts the peripheral surface of the lamp pin; Four contact terminals having a fixed piece that is disposed on the side of the movable piece around the lamp pin and that is integral with the movable piece, and a fixed portion that is provided on the fixed piece and is locked to the socket body, Fluorescent lamp sockets in which terminals are respectively incorporated in the lamp bin insertion holes. The movable piece is semi-cylindrical, the fixed piece is interposed between both sides in the circumferential direction of the movable piece, and one end of the contact terminal is formed in a cylindrical shape between the movable piece and the fixed piece, and the contact The both sides of the movable piece and the fixed piece are integrally formed on the other end side of the terminal, and the semi-cylindrical movable piece is separated at the center in the circumferential direction to form a pair. The fixed piece was arranged so as to be parallel to a straight line that bisects the apex angle of a rectangle formed by connecting the centers of the lamp pin insertion holes.

  A fluorescent lamp socket according to a second aspect is the fluorescent lamp socket according to the first aspect, wherein the position of the fixing piece is arranged on the long side of a rectangle formed by connecting the centers of the lamp pin insertion holes.

  The fluorescent lamp socket according to claim 3 is the fluorescent lamp socket according to claim 1 or 2, wherein when the pin of the gauge according to IEC 60061-3, 7006-79A is inserted into the lamp pin insertion hole, The surface was placed at a position tangent to the surface of the gauge pin as received.

  The fluorescent lamp socket according to claim 4 is the fluorescent lamp socket according to claim 1 or 2, wherein the surface of the fixed piece is tangent to a lamp pin insertion hole corresponding to a hole of a gauge through gauge of IEC 60061-3, 7006-79. It was placed at the position.

  The fluorescent lamp socket according to claim 5 is the fluorescent lamp socket according to claim 1, 2, 3 or 4, wherein the lamp pin insertion hole has a contact terminal insertion hole on the back side of the lamp pin insertion port, The gap between the contact terminal insertion holes was expanded in the direction of a straight line that bisects the contact terminal to make the contact terminal movable.

The fluorescent lamp socket according to claim 6 is the fluorescent lamp socket according to claim 1, 2, 3, 4, or 5, wherein the fixing portion is provided in the contact terminal insertion hole. with it locked to, and the surface of the fixing portion of the supporting portion is engaged with the convex surface of a substantially spherical or polygonal shape.

  According to the fluorescent lamp socket of the first aspect of the present invention, since the fixing piece is arranged so as to be parallel to a straight line that bisects the vertical angle of the rectangle formed by connecting the centers of the lamp pin insertion holes, It is possible to cope with the case where all the theoretical variations are in the range of two kinds of gauges for a 4-pin socket defined by IEC which is an international standard. In other words, the area through which the lamp pin can pass when considering the theoretical total variation of the actual lamp pin extends in a circular shape. On the other hand, the passage area of the gauge pin extends in the shape of a long hole, and when these centers are aligned, there is a portion where the passage area of the gauge pin protrudes. By making the spreading direction of the elongated hole parallel to the surface of the fixing piece of the contact terminal, the fixing piece can be adapted to both the gauge and the actual lamp pin without greatly separating the fixing piece from the center of the lamp pin insertion hole.

  Further, when considering the case where the contact terminal is squeezed by the two pins of the lamp, the squeezing force can be released because the fixing piece is inclined by 45 °.

  In Claim 2, since the position of the fixed piece is arranged on the long side of the rectangle formed by connecting the centers of the lamp pin insertion holes, the distance between the fixed pieces can be secured, and the insulation distance and the strength of the insulator can be secured. It is advantageous.

  In claim 3, when the pin of the gauge according to IEC 60061-3, 7006-79A is inserted into the lamp pin insertion hole, the surface of the fixed piece is arranged at a position tangent to the surface of the pin of the gauge as received. Therefore, the positional relationship is such that the fixed piece can be disposed closest to the center of the lamp pin insertion hole.

  According to the fourth aspect of the present invention, since the surface of the fixed piece is arranged at a position tangent to the lamp pin insertion hole corresponding to the hole of the gauge through gauge of IEC 60061-3, 7006-79, the fixed piece is placed at the center of the lamp pin insertion hole. It is the positional relationship that can be placed closest.

  According to a fifth aspect of the present invention, the lamp pin insertion hole has a contact terminal insertion hole on the back side of the lamp pin insertion opening, and the contact terminal is made movable by expanding the gap between the contact terminal and the contact terminal insertion hole in a straight line direction. Therefore, a gap is formed in the direction of variation of the gauge pins. Therefore, even if the spring property of the movable piece of the contact terminal is small, it is possible to prevent the contact terminal itself from following the gauge pin and exceeding the spring limit.

  According to the sixth aspect of the present invention, since the fixing portion is locked to the support portion provided in the contact terminal insertion hole, and the surface on which the fixing portion of the support portion is locked is substantially spherical, the contact between the fixing portion and the support portion In addition to reducing the area and making it easier to obtain the effect of claim 5, it is also possible to follow up by the inclination of the contact terminal.

  An embodiment of the present invention will be described with reference to FIGS. 1A is a plan view of a fluorescent lamp socket according to an embodiment of the present invention, FIG. 1B is a sectional view taken along the line C-C, FIG. 2 is a three-view diagram of the fluorescent lamp socket according to the embodiment of the present invention, and FIG. 4 is an exploded perspective view, FIG. 5 is a perspective view of a contact terminal, and FIG. 6 is a perspective view as seen from different directions.

  As shown in FIG. 1 and the like, four contact terminals 10 are respectively incorporated into four lamp pin insertion holes 12 provided in an insulating socket body 11. The contact terminal 10 is provided on the fixed piece 14 having a spring property and contacting the peripheral surface of the lamp pin, a fixed piece 14 that is disposed on the side of the movable piece 13 around the lamp pin, and is integral with the movable piece 13. And a fixed portion 15. In this case, as shown in FIGS. 4 to 6, the fixed piece 14 is an elongated metal plate, and a pair of movable pieces 13 are integrally formed on both sides thereof. The movable piece 13 is continuous with the fixed piece 14 and the base end portion, and the distal end side is separated from the fixed piece 14 so as to be disposed on the side of the fixed piece 14 and is movable by elastic deformation. In addition, the movable piece 13 is tapered so that the diameter decreases toward the tip, and can be pressed against the lamp pin. The tip is widened to serve as a guide when the lamp pin is inserted. The fixing portion 15 is configured by cutting and raising the fixing piece 14 so as to open to the base end side. An attachment portion 17 is formed at the base end portion of the contact terminal 10 to caulk and connect the lead wire 16 integrally with the fixed piece 14. The lead wire 16 may be a fast connection terminal or a connection by welding.

  As shown in FIG. 1, the socket body 11 is configured such that the fixing piece 14 can be arranged in parallel with a straight line (straight line direction L) that bisects the rectangular apex formed by connecting the centers G of the lamp pin insertion holes 12. . In this case, the lamp pin insertion hole 12 has a contact terminal insertion hole 19 on the back side of the lamp pin insertion port 18, and a support portion 20 to which the fixing portion 15 is locked and fixed is provided on the inner peripheral surface thereof. The position of the support portion 20 is determined so that the fixing portion 15 and the fixing piece 14 form an angle of about 45 ° with each side of the rectangle and are parallel to a straight line passing through the vertex of the rectangle. The support part 20 is stepped and the contact terminal insertion side is inclined. When the contact terminal 10 is inserted from the contact terminal insertion hole 19, the fixing portion 15 pushed in by the support portion 20 is elastically restored to be locked to the support portion 20. Further, it is desirable to provide the support portion 20 so that the position of the fixing piece 14 is arranged on the long side of the rectangle formed by connecting the centers of the lamp pin insertion holes 12. Thereby, since the distance of the fixing | fixed part 15 is securable, it is advantageous in the insulation distance and the intensity | strength of an insulator. Further, when considering the case where the contact terminal 10 is squeezed by the 2 pins of the lamp, the squeezing force can be released because the fixing portion 15 is inclined by 45 °.

  Further, it is possible to cope with the case where the total variation of the actual lamp pin is in the range of two gauges for a 4-pin socket defined by the international standard IEC. In other words, the area through which the lamp pin can pass when considering the theoretical total variation of the actual lamp pin extends in a circular shape. On the other hand, the passage area of the gauge pin extends in the shape of a long hole, and when these centers are aligned, there is a portion where the passage area of the gauge pin protrudes. By making the spreading direction of the elongated hole and the surface of the fixing piece 14 of the contact terminal 10 parallel to each other, the fixing piece 14 can be adapted to both the gauge and the actual lamp pin without being greatly separated from the center of the lamp pin insertion hole 12. Can do. It should be noted that what is written theoretically cannot be read what kind of lamp will be on the market in the future, so if the source is determined according to the IEC standard, the hole diameter and hole pitch of the gauge according to the cap will be the maximum theoretical variation.

  FIG. 7 is an explanatory view per gauge in the embodiment of the present invention, and corresponds to the DD cross section of FIG.

  As shown in FIG. 7, the gauges for the 4-pin socket specified by the IEC of the international standard are both narrower (gauge B2) and wider (gauge A1) than the pitches allowed by the actual lamp. There are two types. It is confirmed that a limit lamp with the maximum variation can be inserted with this jig. The pin of the G10q metal fitting gauge is standardized to IEC60061-3, 7006-79A, and the hole of the G10q metal fitting gauge is standardized to IEC60061-3, 7006-79.

  In this case, the movable piece 13 can bend in the arrow direction a, but the fixed piece 14 cannot be bent because it is integral with the fixed portion 15 and has a molded product behind it. Therefore, the gauges A1 and B2 do not come into contact with the fixed piece 14 and come into contact with the movable piece 13, but there is no problem because they bend. In addition, when the pin of the gauge according to IEC 60061-3, 7006-79A is inserted into the lamp pin insertion hole 12, the surface of the fixed piece 14 is arranged at a position tangent to the surface of the pin of the gauge as received. That is, when the gauges A1 and B2 and the fixed piece 14 are tangent, the socket can be configured to be the smallest. When the actual lamp pin does not fit in the projection plane of the variation gauge A1 and gauge B2 in the arrow direction b, it is necessary to translate the contact terminal 10 in the arrow direction b. The surface of the fixed piece 14 may be arranged at a position tangent to the lamp pin insertion hole 12 corresponding to the hole of the gauge through the cap of IEC 60061-3, 7006-79. In this case, the positional relationship is such that the fixed piece 14 can be disposed closest to the center of the lamp pin insertion hole 12.

  It also shows how to make the socket most compact while supporting all real lamps and gauges. That is, as shown in FIG. 8, the virtual gauge pin 25 is set so as to overlap the gauges A1 and B2. The virtual gauge pin 25 assumes variations of all real lamps and has the same pitch diameter as the gauge pin insertion hole as the lamp cap. Reference numeral 26 denotes the center of the four contact terminals, which is the center of the gauge according to the receipt of money and the center of the gauge according to the mouthpiece. The virtual gauge pin 25 is set to be tangent to the fixed piece 14 inclined by 45 ° with respect to the center line passing through the center 26.

  FIG. 9 is a cross-sectional view taken along line EE in FIG. As shown in FIG. 9, the lamp pin insertion hole 12 widens the gap between the contact terminal 10 and the contact terminal insertion hole 19 in a straight line direction L that bisects a rectangular apex formed by connecting the center of the lamp pin insertion hole 12. The contact terminal 10 is movable. That is, since there is a gap between the contact terminal 10 and the contact terminal insertion hole 19, the contact terminal 10 can follow the direction L (gauge pin pitch variation direction). Even if the spring property of the movable piece 13 of the contact terminal 10 is small, it is possible to prevent the contact terminal 10 itself from following the gauge pin and exceeding the spring limit. In addition, since the gap is not widened in the depth direction of the paper surface, that is, in the engagement margin direction locked to the support portion 20 of the fixing portion 15, the engagement margin is reduced due to rattling and the fixing of the contact terminal 10 is weakened. Absent.

  FIG. 10A is a sectional view showing another example of the support portion of the fluorescent lamp socket according to the embodiment of the present invention, and FIG. As shown in FIG. 10 (a), the surface on which the fixing portion 15 of the support portion 20 is locked has a substantially spherical shape. Thereby, the contact area of the fixing | fixed part 15 and the support part 20 reduces, and the contact terminal 10 becomes easy to move to the direction L. FIG. Further, as shown in FIG. 10B, a follow-up movement to the lamp pin due to the inclination of the fixing portion 15 is also added, and a higher effect can be obtained. In addition, as shown in FIG.10 (c), you may make the surface where the fixing | fixed part 15 of the support part 20 latches into a polygonal shape.

(A) is a top view of the fluorescent lamp socket of embodiment of this invention, (b) is the CC sectional drawing. It is a three-view figure of the fluorescent lamp socket of embodiment of this invention. It is a perspective view of the fluorescent lamp socket of embodiment of this invention. FIG. 4 is an exploded perspective view of FIG. 3. It is a perspective view of a contact terminal. It is the perspective view seen from the different direction of FIG. It is explanatory drawing per gauge in embodiment of this invention. It is explanatory drawing of the method of compacting a socket most, corresponding to all the real lamps and gauges in embodiment of this invention. It is EE sectional drawing of Fig.1 (a). (A) is sectional drawing which shows the other example of the support part of the fluorescent lamp socket of embodiment of this invention, (b) is the effect | action explanatory drawing, (c) is sectional drawing of a modification. (A) is a top view of the conventional fluorescent lamp socket, (b) is AA sectional drawing of (a). It is explanatory drawing which shows a state when the center of the gauge A1 and the gauge B2 is put together and overlapped. It is explanatory drawing per gauge in a prior art example. It is explanatory drawing per gauge in another prior art example.

Explanation of symbols

1 gauge A
2 gauge B
DESCRIPTION OF SYMBOLS 10 Contact terminal 11 Socket main body 12 Lamp pin insertion hole 13 Movable piece 14 Fixed piece 15 Fixed part 18 Lamp pin insertion port 19 Contact terminal insertion hole 20 Support part

Claims (6)

A movable piece that has a socket body provided with four lamp pin insertion holes, has spring properties, and contacts the peripheral surface of the lamp pin, and a fixed piece that is disposed on the side of the movable piece around the lamp pin and is integral with the movable piece And four contact terminals having a fixing portion provided on the fixing piece and locked to the socket body, wherein the contact terminals are respectively incorporated in the lamp bin insertion holes,
The movable piece is semi-cylindrical, the fixed piece is interposed between both sides in the circumferential direction of the movable piece, and one end of the contact terminal is formed in a cylindrical shape between the movable piece and the fixed piece, and the contact The both sides of the movable piece and the fixed piece are integrally formed on the other end side of the terminal, and the semi-cylindrical movable piece is separated at the center portion in the circumferential direction to form a pair,
A fluorescent lamp socket, wherein the fixed piece is arranged so as to be parallel to a straight line that bisects a rectangular apex formed by connecting the centers of the lamp pin insertion holes.   The fluorescent lamp socket according to claim 1, wherein the position of the fixed piece is arranged on the long side of a rectangle formed by connecting the centers of the lamp pin insertion holes.   The IEC 60061-3, 7006-79A accepting gauge pin is inserted into the lamp pin insertion hole, and the surface of the fixed piece is arranged at a position tangent to the accepting gauge pin surface. 2. The fluorescent lamp socket according to 2.   The fluorescent lamp socket according to claim 1 or 2, wherein the surface of the fixed piece is arranged at a position tangent to a lamp pin insertion hole corresponding to a hole of a gauge through gauge of IEC 60061-3, 7006-79.   The said lamp pin insertion hole has a contact terminal insertion hole in the back | inner side of a lamp pin insertion port, The clearance gap between the contact terminal and the said contact terminal insertion hole was extended in the direction of the straight line which bisects, and the contact terminal was movable. Fluorescent lamp socket according to 1, 2, 3 or 4. Wherein with a fixed part is locked to the supporting portion provided in the contact terminal insertion holes, claim 1 which is the convex surface of a substantially spherical or polygonal shape of the surface of the fixing portion of the support portion is engaged, wherein The fluorescent lamp socket according to claim 2, claim 3, claim 4 or claim 5.

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