KR100251028B1 - Wedge base bulb socket - Google Patents

Abstract

The present invention firmly supports a wedge-base bulb and prevents rattling of the terminals in the socket as well as rattling when the bulb is fitted into the socket for the wedge-based bulb. It relates to a socket for a wedge-shaped base bulb that can be. A bulb insertion hole is formed in the bulb insertion portion so as to open at one end, which is surrounded by a wall. Terminal strip supports are formed along the inner surface of the wall. The socket terminals are integrally formed with the terminal strips to be electrically connected with the wedge-shaped base bulb and at the same time to securely hold the base. The power supply terminal portions are only formed integrally with the strips and are electrically connected to the outside. The socket terminals of the terminal strips are disposed in the bulb insertion hole of the bulb socket portion and the power supply terminal portions are disposed in the power supply connector, so that some of the socket terminals are sandwiched between the terminal strip supports of the bulb socket and the wall.

Description

Socket for wedge-shaped base bulb {WEDGE BASE BULB SOCKET}

The present invention relates to a wedge-base bulb socket. More specifically, it relates to sockets for wedge-shaped base bulbs that hold the wedge-shaped bulb firmly and prevent rattling of the wedge-shaped base bulbs as well as the terminals installed in the sockets.

As bulbs used as a light source for automobile lamps, it is known to be called a wedge-shaped base bulb, which is a capless form. The base portion of the glass bulb is inserted directly into the socket to attach the wedge base bulb to the lamp.

19 and 20 illustrate a conventional wedge base bulb and a socket for a wedge base bulb to which the wedge base bulb is connected as an example.

The wedge-shaped base bulb a is a so-called double filament type bulb having two filaments. This wedge-shaped base bulb (a) is a glass bulb (b), a generally flat base (c) protruding downward from the glass bulb (b), and leads (d) extending from the bottom of the base (c). And terminals (e) formed by bending one of the leads (d) to the right and the other to the left and then folding the leads upward along the side of the base (c).

The socket f comprises a socket body g and terminal strips (described below). The socket body g has a bulb socket h, and the terminal strips j, k, l are arranged along the inner surface of the bulb insertion hole i of the bulb socket h. One end of each of the terminal strips j, k, l is connected to the required power cord or the like. As a result, the terminal strips are electrically connected to the power supply of the motor vehicle.

The terminal strip k is provided with a pressing protrusion m for pressing the base c of the wedge-shaped base bulb a in the direction in which the filament extends.

When the base c of the bulb a is inserted into the bulb insertion hole i of the socket f, the base c remains as if it is constrained in the terminal strips j, k, l. At the same time the base c is individually contacted with the terminals e, so that power is supplied to the bulb a.

However, in the above-described socket for wedge-shaped bulb, the base c of the wedge-shaped bulb (a) is inserted into the bulb insertion hole (i) of the socket-shaped bulb (w) of the wedge-shaped base bulb (a). In order to prevent rattling and dropping of a), it is necessary to firmly hold the base c of the wedge-shaped base bulb a.

In practice, with the bulb a being inserted into the bulb insertion hole i, the base c is mainly sandwiched between the terminal strips j, k, l of the socket f. The pressing protrusion m presses only one side of the bulb in the direction in which the filaments extend. Accordingly, the bulb is susceptible to vibration and the like, thereby causing the bulb a to rattle in the direction in which the filaments extend. When the level of vibration is high, there is a problem that the intensity distribution pattern (light distribution pattern) of the lamp deviates (deviates) from alignment.

Furthermore, the terminal strips j, k, l are not fixed to the bulb insertion holes i but merely disposed along the inner surface of the bulb insertion holes i, so that the terminal strips j, k, l itself There is also a problem that is rattling in the bulb insertion hole (i).

In order to solve the above-mentioned problems in the prior art, according to one aspect of the present invention, a wedge-shaped base including a bulb socket portion, a power supply socket portion, and a socket body in which at least three terminal strips are integrally formed. A wedge-base bulb socket is provided. The bulb insertion hole formed in the bulb socket portion is opened toward one end and surrounded by the wall. Terminal strip supports are formed along the inner surface of the wall. The terminal strips are formed by integrating a socket terminal portion for supporting (pinching) and electrically connecting the base of the wedge-shaped base bulb and a power supply terminal portion for electrical connection to the outside. The socket terminal portions are disposed in the bulb insertion hole of the bulb socket portion and the power supply terminal portions are disposed in the power supply connector. Some of the socket terminal portions are fitted between the terminal strip supports and the wall.

According to the socket for the wedge-shaped base bulb of the present invention, the socket terminals of the terminal strips are sandwiched between the terminal strip supports of the bulb socket and the wall, thereby preventing rattling of the terminal strips. In addition, it is possible to prevent breakage (breaking) of the filaments and rattling of the bulb itself due to rattling of the terminal strips.

1 is a front view of a socket for a wedge-shaped base bulb constructed in accordance with a preferred embodiment of the present invention;

2 is a rear view of the socket for the wedge-shaped base bulb;

3 is a cross-sectional view of the socket for the wedge-shaped base bulb taken along line III-III of FIG. 1;

4 is a front view of the socket body;

5 is a cross-sectional view of the socket body taken along the line VV of FIG. 4;

6 is a sectional view of the socket body taken along the VI-VI line of FIG. 4;

7 is a right side view of the first terminal strip;

8 is a bottom view of the first terminal strip of FIG. 7;

9 is a front view of the first terminal strip of FIG. 7;

10 is a right side view of the second terminal strip;

FIG. 11 is a bottom view of the second terminal strip of FIG. 10;

12 is a front view of the second terminal strip of FIG. 10;

13 is a left side view of the third terminal strip;

14 is a top view of the third terminal strip of FIG. 13;

FIG. 15 is a front view of the third terminal strip of FIG. 13; FIG.

16 is a perspective view of a wedge shaped base bulb;

17 is a longitudinal sectional view of the wedge-shaped bulb attached to the socket for the wedge-shaped bulb;

18 schematically shows the relationship between the base of the wedge-shaped bulb and the terminal strips and is a cross-sectional view of the wedge-shaped bulb attached to the socket for the wedge-shaped bulb when viewed from above;

19 is a horizontal sectional view of a socket for a conventional wedge-shaped bulb;

20 is a longitudinal sectional view of a conventional bulb support.

<Description of the code | symbol about the principal part of drawing>

1: Socket for wedge-shaped base bulb

2: socket body

3: main part

6: flange

9: valve insertion hole

12: connector insertion hole

14, 23, 31: 1st, 2nd, 3rd terminal strip

16, 17, 25, 33: socket terminal portion

22, 30, 42: power supply terminal

Hereinafter, a socket for a wedge-shaped base bulb according to the present invention will be described in detail with reference to the exemplary embodiment illustrated in FIGS. 1 to 8.

A wedge-based bulb socket (wedge-base bulb socket) 1 has one end of which receives and supports a wedge-shaped base bulb (described later), and the other end thereof is connected to a power supply connector (not shown). The socket for the wedge-shaped base bulb includes a socket body and a plurality of terminal strips disposed within the socket body.

Although not intended to limit the scope of the present invention, for convenience of description, the directions of the upper, lower, left and right sides of FIG. 1 are used to limit the upper, lower, left and right directions of the socket for the wedge-shaped base bulb in the present specification. use. Furthermore, the upper and lower directions (the longitudinal direction of the socket body) shown in Fig. 3 are used to define the rear and front of the socket for the wedge-shaped base bulb, respectively.

The socket body 2 is molded by a dielectric material such as synthetic resin or the like. The socket body 2 has a generally cylindrical main part 3. One end of the main part 3 is opened forward and its rear end is closed. An angled cylindrical bulb socket (described later) is integrally projected forward from the rear wall portion 3a of the main portion 3. In addition, the cylindrical power supply connector is integrally formed to protrude rearward from the rear wall portion 3a.

The fixed (fastening) protrusions 5 are integrally radially projected from the vicinity of the front end of the circumferential wall 4 of the main part 3, spaced about 90 ° from each other along the circumference. In addition, the flange 6 protrudes integrally from the circumferential wall 4 located slightly rearward with respect to the fixed protrusion 5.

The flange 6 protrudes radially at an angle from the outer circumferential surface 4a of the circumferential wall 4 of the main part 3 to the front, ie at an angle forwardly from the outer circumferential surface 4a. The rim extends from the outermost edge of the inclined portion of the flange 6 in the direction orthogonal to the outer circumferential surface 4a.

The flange 6 is divided into four parts, which parts are circumferentially with respect to each other at intervals slightly larger than the circumferential width of the fixing protrusions 5 in such a way that they do not overlap with the fixing protrusions 5 toward the front. Will be away.

The bulb socket 7 projects forward from the rear wall portion 3a of the main portion 3 and is surrounded by the wall 8. The bulb socket 7 is formed in a generally angled cylindrical shape, and the bulb insertion hole 9 is open at the front end of the bulb socket 7. Some of the terminal strips (described below) are arranged along the inner surface 8a of the wall 8 inside the bulb insertion hole 9. The rear end of the wall 8 is located in the main part 3 and at the same time partially overlaps the circumferential wall 4 of the main part 3. Thus, the wall 8 of the bulb socket 7 having a generally parallelepiped shape is located inside the circumferential wall 4 of the generally cylindrical main part 3 and thus forms a double structure.

The power supply connector 10 protrudes rearward from the rear wall portion 3a of the main portion 3. Like the bulb socket 7, the power supply connector 10 is surrounded by a wall 11. The power supply connector 10 has a connector insertion hole 12 that is open to the rear, and forms a cylindrical element that protrudes approximately when viewed from the direction in which the power supply connector 10 is opened.

In particular, the central portion 13 of the upper part of the wall 11 is further raised in the radial direction compared to the other parts of the wall, thereby forming a C-shaped protrusion. As a result, the connector insertion hole 12 has a protruding shape. The connector insertion hole 12 serves as a guide groove for positioning a power supply connector (not shown) that fits into the bulb socket.

Three terminal strips formed of a spring-like elastic and conductive metal plate are firmly fitted into the socket body 2. As will be described later, the shapes of the three terminal strips are different.

As shown in FIGS. 7 to 9, the first terminal strip 14 has a main portion 15 extending vertically, the main portion 15 having the letter L sideways when viewed in a direction orthogonal to its wide side. It is shaped like lying down. The socket terminal portions 16 and 17 protrude integrally in the horizontal direction at the upper and lower edges of the main portion 15.

The socket terminal portions 16, 17 protrude from the main portion 15 to the right at different lengths. In particular, the lower socket terminal portion 17 protrudes about 1.5 times longer than the upper socket terminal portion 16.

The socket terminals 16a and 17a extend at the right ends of the upper socket terminal portion 16 and the lower socket terminal portion 17, respectively. The socket terminals 16a and 17a each have a front end that flexes up and down in the form of a hairpin. Moreover, the socket terminals 16a and 17a extend rearward to be arranged in an offset relationship with respect to each other in the vertical direction of the main part.

As shown in FIG. 7, the socket terminals 16a and 17a extend obliquely at an angle in the up and down directions from the socket terminal portions 16 and 17, respectively. The inclination angle increases at the middle of the socket terminal portions 16 and 17, respectively. Since the rear end portion following the intermediate portion is bent in an arc shape, the outermost ends of the socket terminals are angled upward and downward, respectively.

Two slits 18 are formed in the middle of the vertical direction of the main portion 15 and extend parallel to each other along the length. The area sandwiched between the slits is raised in a generally trapezoidal shape toward the right side. As will be described in more detail below, the trapezoidal protrusions 19 come into contact with a portion of the wedge-shaped base bulb so that the wedge-shaped base bulb is firmly fixed. The trapezoidal protrusions 19 serve as adjusting pieces for regulating the movement of the wedge-shaped base bulb.

The rear end 20 extends rearward from the main portion 15, and the power supply terminal portion 21 extends horizontally integrally at the lower edge of the rear end 20. The rear end of the power supply terminal portion 21 further extends rearward to form the power supply terminal 22. The left and right edges of the power supply terminal 22 are folded down. These folded edges abut each other along its longitudinal center below the lower surface of the power supply terminal. As a result, the power supply terminal 22 has a dual structure, thereby increasing the strength of the power supply terminal.

As shown in FIGS. 10 to 12, the second terminal strip 23 has a main portion 24 of a generally parallelepiped that extends horizontally in the longitudinal direction of the second terminal strip 23. The socket terminal portion 25 and the support portion 26 extend integrally and side by side with the main portion at the front edge of the main portion 24. The socket terminal portion 25 and the support portion 26 are separated from each other by a gap 27 formed therebetween.

The socket terminal 25a extends integrally at the front end of the socket terminal portion 25. That is, the socket terminal 25a is flexibly downwardly bent in the form of a hairpin and then extends backward.

In particular, like the socket terminals 16a and 17a of the first terminal strip 14 described above, the socket terminal 25a extends downwardly at an angle from the front edge of the main portion 24 and the inclination angle thereof is the socket terminal 25a. Increases from the middle of The trailing rear portion at the intermediate portion is curved in an arc shape and the rear edge is inclined upwards.

The support 26 is gradually bent downward at an angle, and the front end portion of the bend extends straight upward to form the hook-like support piece 26a. In other words, the hook-shaped support piece 26a is bent forward downward as shown in Fig. 10, then bent upward at an angle and the edge of the upward bend extends straight.

The support part 26 is formed with the beads 26b by press working. The beads 26b are formed to extend from the base of the support portion adjacent to the main portion 24 to the downward inclination portion of the support piece 26a. As a result, the rigidity of the support 26 is increased, thereby ensuring a stable spring force. Thus, the support 26 is maximally protected from deformation and breakage when repeatedly bent.

From the left edge of the back of the main part 24, the connection part 28 extends downward integrally. The power supply terminal 29 extends horizontally integrally in the right direction from the lower edge of the connecting portion 28.

The rear end of the power supply terminal portion 29 further extends rearward to form the power supply terminal 30. The left and right edges of the power supply terminal 30 are folded down, and the folded edges are in contact with each other along the center line in the longitudinal direction at the bottom of the bottom of the power supply terminal 30. As a result, the power supply terminal has a dual structure and thus the strength of the power supply terminal is increased.

As shown in FIGS. 13 to 15, the third terminal strip 31 is composed of a main portion 32 which is a generally parallelepiped extending horizontally in the longitudinal direction of the third terminal strip 31. The socket terminal portion 33 and the support portion 34 extend in parallel with the main portion at the front edge of the main portion 32. The socket terminal portion 33 and the support portion 34 are spaced from each other by a gap 35 formed therebetween.

The socket terminal 33a integrally extends rearward at the front edge of the socket terminal portion 33. The socket terminal 33a is flexibly upwardly bent in the form of a hairpin.

As shown in FIG. 13, the socket terminal 33a extends obliquely upward at a predetermined angle from the front edge of the main portion 32. The inclination angle increases at the middle of the socket terminal 33a. The rear part, which continues from the middle part, is curved in an arc shape, and the rear edge is inclined downward.

The support 34 is gradually curved upward, so that the front edge of the support 34 is formed of a hook-shaped support piece 34a. Initially, the support piece 34a extends obliquely upwardly toward the front of the socket terminal and then is obliquely bent downward, and the edge of the support piece 34a is bent downwardly straight.

Like the second terminal strip 23, the beads 34b are formed in the support part 34 by press working or the like. The beads 34b are formed to extend from the base of the main portion 32 and the neighboring support portion 34 over the upwardly inclined portion of the support piece 34a. As a result, the rigidity of the support part 34 is increased, thereby ensuring a stable spring force. Thus, when the support part 34 is repeatedly bent, it is maximally protected from deformation and breakage.

The connecting portion 36 extends upwardly integrally from the right edge of the main portion 32. The region 37 of the connecting portion 36 close to the front edge of the third terminal strip extends forward to a position substantially the same as the portion where the front edge of the support piece 34a is located.

Two slits 38 are formed at vertical intermediate positions on the area 37 extending horizontally in the longitudinal direction. The region sandwiched between the slits 38 is raised (projected) to the left to form a substantially trapezoidal shape. As will be described in more detail below, the trapezoidal edge forms an adjusting (regulatory) flake 39 which comes into contact with a portion of the wedge-shaped base bulb to press on one side of both sides of the bulb, thereby moving the wedge-shaped base bulb. This is regulated.

The power supply terminal portion 41 extends horizontally at the upper edge of the area 40 of the connecting portion 36 adjacent the rear edge of the third terminal strip. In particular, the power supply terminal portion 41 is bent to the left at right angles along the upper edge of the region 40 so that it is generally at the vertical intermediate height of the third terminal strip. The rear end of the power supply terminal portion 41 further extends rearward to form the power supply terminal 42. Both edges of the power supply terminal 42 are bent downward, and the curved edges are in contact with each other along the longitudinal center of the power supply terminal below the bottom of the power supply terminal. As a result, the power supply terminal has a dual structure, thereby increasing the strength of the power supply terminal.

Hereinafter, the internal shape of the bulb insertion hole 9 is demonstrated.

The wall 8 of the bulb socket 7 forming the bulb insertion hole 9 comprises an upper wall 43, a lower wall 44, a left wall 45 and a right wall 46. The terminal strip supports and slits are formed to extend forwardly from the rear wall 3a of the main part 3 along the inner surface of the walls 43, 44, 45, 46 so that the first terminal strip 14, the second terminal strip 23, the third terminal strip 31 is retained.

As shown in FIGS. 3 to 6, the ribs 47, 48 are integrally raised from each inner surface of the upper wall 43 and the lower wall 44 of the wall 8, that is, the inner surface of the wall 8. Protrude from 8a and extend in the longitudinal direction. In particular, the ribs 47 extend downward from the left position on the top wall 43, while the ribs 48 generally rise upward in the center of the bottom wall 44.

The ribs 47, 48 extend rearward along the wall 8 and are connected to the rear wall 3a of the main part 3.

A portion of the upper wall 43 and the lower wall 44 positioned on the right side of the ribs 47 and 48 is raised to extend to the position in front of the longitudinal upper and lower edges of the wall 8. In other words, some of the upper and lower walls are formed in the longitudinal direction with an increased thickness compared to other parts of the wall. As a result, as shown in Fig. 5, a portion of the inner surface of the upper wall 43 and the lower wall 44 is cut, so that the cutting portions 43a and 44a have a predetermined size from the edge of the opening of the bulb insertion hole 9. Is formed.

The terminal strip supports 49, 50 in the form of blocks extend from the rear wall 3a of the main part 3 by about two thirds of the longitudinal length of the bulb socket 7. It is formed forward on both sides of the rib 47 of the upper wall 43 of 8). Similarly, terminal strip supports 51, 52 in the form of blocks are formed on both sides of the ribs 48 of the lower wall 44.

A slit that can be divided into three generally divided portions is formed between the terminal strip supports 49, 50, 51, 52 in the form of blocks and the inner surface 8a of the wall 8.

As shown in FIG. 4, the first slit 53 has an upper portion 54 extending leftward from the left side of the raised ribs 47 to the left wall 45 on the upper wall 43 of the wall 8, and an upper portion ( A vertical portion 55 extending perpendicularly from the left edge of the left edge to the lower wall 44 along the left wall 45 and a right angle from the lower edge of the vertical portion 55 to the rib 48 along the lower wall 44. And a middle portion 57 extending horizontally from the middle of the vertical portion 55 to the right direction. The upper portion 54, the lower portion 56 and the middle portion 57 are generally parallel to each other.

The second slit 58 has an upper portion 59 extending rightward from the raised ribs 47 on the upper wall 43 of the wall 8 to the vicinity of the right wall 46 and a rib at the left edge of the upper portion 59. A vertical portion 60 extending downward at right angles to a substantially radial center of the bulb insertion hole 9 along the right side of the bulb 47, and a bottom portion 61 extending horizontally at right angles from the lower edge of the vertical portion 60 Equipped.

The third slit 62 has a vertical portion 63 extending from the upper wall 43 to the lower wall 44 along the right wall 46 of the wall 8, and the lower wall 44 at the lower edge of the vertical portion 63. Along the bottom portion 64 extending perpendicularly to the left side of the rib 48, and the intermediate portion 65 extending leftward from the substantially vertical middle of the vertical portion 63.

As shown in FIG. 4, when viewed from the front of the socket body 2, the terminal strip support 49 is located below the top 54 of the slit 53, and the terminal strip support 51 is located at the bottom 56. ), The terminal strip support 50 is located below the top 59 of the slit 58, and the terminal strip support 52 is located above the bottom 64 of the slit 62. The slits 53, 58, 62 formed inside the bulb insertion hole 9 of the bulb socket 7 have a shape substantially the same as that of the terminal strips 14, 23, 31 when viewed from the front.

The middle portion 57 of the slit 53, the bottom portion 61 of the slit 58, and the middle portion 65 of the slit 62 are generally approximately horizontally aligned with each other at the vertical center of the bulb insertion hole 9. Alignment is placed. A portion of the middle portion 57, the bottom portion 61, and the middle portion 65 are connected to the connector of the power supply connector 10 through the rear surface 3a of the main portion 3 as shown in FIGS. 2 and 3. It is connected to communicate with the insertion hole 66 opened in the insertion hole 12.

The attachment of the terminal strips 14, 23, 31 to the socket body 2 will now be described.

The power supply terminals 22, 30, 42, which also serve as the rear ends of each terminal strip 14, 23, 31, have a main part 3 closing the rear end of the bulb insertion hole 9 of the socket body 2. It is aligned with each insertion hole 66 formed in the rear wall portion 3a of the. The terminal strips 14, 23, 31 pass from the front to the rear of the socket body 2 to the first slit 53, the second slit 58, and the third slit 62 in the bulb insertion hole 9, respectively. Is inserted.

In particular, as a result of the first terminal strip 14 being inserted into the slit 53, the main portion 15, the upper socket terminal portion 16, the lower socket terminal portion 17, the power supply terminal portion 21, and the power supply terminal 22 is inserted into the vertical portion 55, the top portion 54, the bottom portion 56, the middle portion 57, and the insertion hole 66, respectively.

As a result of the insertion of the second terminal strip 23 into the slit 58, the main part 24, the connection part 28, the power supply terminal 29, and the power supply terminal 30 are respectively upper 59 and vertical. It is inserted into the part 60, the bottom part 61, and the insertion hole 66. As shown in FIG.

As a result of the insertion of the third terminal strip 31 into the slit 62, the main part 32, the connection part 36, the power supply terminal part 41, and the power supply terminal 42 are respectively the bottom part 64, the vertical part. It is inserted in the part 63, the intermediate part 65, and the insertion hole 66. As shown in FIG.

Thus, the socket terminal portion 16 of the terminal strip 14 is sandwiched vertically (from top to bottom) between the wall 8 and the terminal strip support 49, and the socket terminal portion 17 also has a wall 8. And vertically sandwiched between the terminal strip support 51. As a result, the socket terminal portions are firmly held in the bulb insertion hole 9. Similarly, the socket terminal portion 25 of the terminal strip 23 is sandwiched vertically between the wall 8 and the terminal strip support 50, and the socket terminal portion 33 of the terminal strip 31 is also the wall 8. And sandwich vertically between the terminal strip support 52. As a result, the socket terminal portions are firmly held in the bulb insertion hole 9.

The terminal strips 14, 23, 31 are arranged to have a positional relationship as shown in FIG. In particular, the socket terminal portion 16, the support portion 26, and the socket terminal portion 25 are regularly defined from left to right along the upper wall 43 of the wall 8 so as to be positioned adjacent to the left wall 45 as a whole. Spaced at regular intervals. Similarly, the socket terminal portion 17, the support portion 34, and the socket terminal portion 33 are spaced at regular prescribed intervals in order from left to right along the bottom wall 44 so as to be entirely located adjacent to the right wall 46. do. Each of the socket terminal 16a and the socket terminal 17a, the support piece 26a and the support piece 34a, and each pair of the socket terminal 25a and the socket terminal 33a are horizontally offset relative to each other. That is, it has a positional relationship that shifts horizontally. The socket terminal 16a is located in front of the terminal strip support 49 to cover the terminal strip support 49, and the support piece 26a is connected to the terminal strip support 50 to cover the terminal strip support 50. Is located in front of. The socket terminal 17a is located in front of the terminal strip support 51 to cover the terminal strip support 51, and the socket terminal 33a is connected to the terminal strip support 52 to cover the terminal strip support 52. Is located in front of.

As shown in Fig. 2, the plate-shaped power supply terminals 22, 30, 42 of the terminal strips 14, 23, 31 are arranged in a straight line with respect to each other.

The so-called double filament bulb of the standard type used as the wedge-shaped base bulb 67 has two filaments 69 and 70 installed in the glass bulb 68.

Leads 71 connected to the filaments 69, 70 inside the glass bulb 68 extend from the rear end of the generally flat base 72 formed behind the glass bulb 68. The leads 71 are divided into a left lead and a right lead, which are each bent up and down along the side of the base 72. As a result, the power supply terminal 71a is formed.

A generally wedge-shaped adjustment (regulation) projection 73 and a stop projection 74 are formed on the wide sides of the upper and lower portions of the base 72 so as to face in opposite directions to each other. In particular, two adjusting protrusions 73 are formed on one side, and one stopping protrusion 74 is formed on the same side between the adjusting protrusions 73 so that they are horizontally aligned with respect to each other. Similarly these protrusions are also formed in corresponding positions on the other side of the base. When the wedge-shaped base bulb 67 is attached to the bulb insertion hole 9 of the socket body 2, the adjusting projections 73 come into contact with the inner surface 8a of the wall 8. As a result, the direction of the bulb 67 is maintained in the intended direction. The stopping protrusion 74 is engaged with the support piece 26a of the terminal strip 23 and the fixing piece 34a of the terminal strip 31, respectively, to prevent the wedge-shaped base bulb 67 from moving (dropping) out of the bulb socket. do.

Finally, the attachment of the wedge-shaped base bulb 67 to the socket-shaped base bulb 1 will be described.

As a result of the base 72 of the wedge-shaped base bulb 67 being inserted into the bulb insertion hole 9 of the socket body 2, the wedge-shaped base bulb 67 is wedge in electrical connection with the socket body 2. It is held by the socket for socket base mold 1.

As described above, the socket terminal portions 16, 17, 25, 33 and the supporting portions 26, 34 of the terminal strips 14, 23, 31 are arranged opposite to each other in a horizontally offset manner. Therefore, the base 72 of the wedge-shaped base bulb 67 is inserted into the bulb insertion hole 9 while pushing the space between the socket terminals 16a, 17a, 25a, 33a and the support pieces 26a, 34a.

When the base 72 is approximately fully inserted into the bulb insertion hole 9, the support pieces 26a, 34a of the terminal strips 23, 31 are formed of the base 72, as shown in Figs. It is located in front of the stopping projections 74 and 74. As a result, the support pieces 26a and 34a are engaged with the stop projections 74, thereby preventing the wedge-shaped base bulb 67 from moving (falling off) in the wedge-shaped base socket socket 1. At the same time, the socket terminals 16a, 17a, 25a, 33a of the terminal strips 14, 23, 31 are in contact with the power supply terminal 71a individually. In particular, the socket terminals 16a, 17a, 25a, 33a and the support pieces 26a, 34a change from the state shown by the double-dotted line in FIG. 18 to the state shown by the solid line. At this time, the base 72 of the bulb 67 is forcibly sandwiched between the support pieces 26a and 34a, thereby increasing the space between the support pieces. In particular, the spacing between the support pieces is maximized when the support pieces 26a, 34a exceed the stop projections 74, 74 of the base 72. In this case, the above-mentioned cutting parts 43a and 44a formed on the upper and lower walls 43 and 44 prevent the support pieces 26a and 34a from interfering with the upper and lower walls 43 and 44.

Moreover, the base 72 is pressed laterally by the adjusting piece 19 of the terminal strip 14 and the adjusting piece 39 of the terminal strip 31 in the bulb insertion hole 9. As a result, the base 72 is prevented from moving in the direction in which the filaments 69 and 70 extend from the bulb 67.

As is apparent from the above description, the socket for wedge-shaped base bulb according to the present invention includes a socket body integrally formed by a bulb socket portion and a power supply socket portion, and at least three terminal strips. The bulb insertion hole formed in the bulb socket part is opened at one end and surrounded by a wall. Terminal strip supports are formed along the inner surface of the wall. The terminal strips are each integrally formed by a socket terminal portion for supporting (pinching) and electrically connecting the base of the wedge-shaped base bulb and a power supply terminal portion for electrical connection to the outside thereof. The socket terminal portions are disposed in the bulb insertion hole of the bulb socket portion and the power supply terminal portions are disposed in the power supply connector, so that some of the socket terminal portions are sandwiched between the terminal strip supports and the wall.

With the socket for the wedge-shaped base bulb according to the invention, some of the socket terminal portions of the terminal strips are sandwiched between the terminal strip supports of the bulb socket and the wall. Therefore, rattling of the terminal strips can be prevented. Furthermore, rattling of the bulb itself and breakage of the filaments resulting from the shaking of the terminal strips are prevented.

Moreover, the bulb is sandwiched between the terminal strips to prevent rattling of the bulb itself. As a result, when the bulb is turned on, the problem that the light intensity distribution pattern (light distribution pattern) of the bulb is disturbed is also prevented.

The configuration and form of the elements disclosed above are merely illustrative of the best embodiments of the invention. Of course, this should not be construed as limiting the technical scope of the present invention.

Claims (14)

As a wedge-base bulb socket having a socket body and three or more terminal strips: The socket body includes a bulb socket portion and a power supply socket portion integrally formed with each other, a bulb insertion hole formed in the bulb socket portion and opened at one end, a wall surrounding the bulb insertion hole, and an inner surface of the wall. Having terminal strip supports formed; Each of the terminal strips includes a socket terminal portion for supporting the base of the wedge-shaped base bulb and electrically connecting the base, and a power supply terminal portion for electrically connecting the bulb socket portion to the outside, wherein the socket terminal portions are provided in the bulb. Disposed in the bulb insertion hole of the socket portion, wherein the power supply terminal portions are disposed in the power supply connector portion, and a portion of each of the socket terminal portions is sandwiched between the terminal strip supports and the wall. Socket for base bulb. The socket for a wedge-shaped base bulb according to claim 1, wherein slits for accommodating the terminal strips are formed in the bulb socket part. 2. The terminal of claim 1, wherein each of the terminal strips has one or more adjustment pieces for preventing the base of the wedge-shaped base bulb from moving in the direction in which the filaments of the bulb extend. Wedge-shaped base bulb socket, characterized in that sandwiched between the adjusting pieces in the direction. 3. The terminal of claim 2, wherein each of the terminal strips has one or more adjustment pieces for preventing the base of the wedge-shaped base bulb from moving in the direction in which the filaments of the bulb extend. Wedge-shaped base bulb socket, characterized in that sandwiched between the adjusting pieces in the direction. 2. The wedge-shaped base of claim 1, wherein the power supply terminals of the power supply terminal portions of the terminal strips are arranged side by side in a line perpendicular to each other in a direction orthogonal to the direction in which the filaments of the wedge-shaped base bulb extend. Bulb socket. As a wedge-base bulb socket having a socket body and three or more terminal strips: The socket body is formed of an insulating material, A generally cylindrical main part having a rear end closed by the rear end wall and opening forward; A bulb socket having a shape of a generally parallelepiped projecting forward from the rear end wall of the main part to receive the base of the wedge-shaped base bulb, surrounded by the wall, and having a bulb insertion hole formed at the front end thereof, and A generally cylindrical power supply connector that projects rearward from the rear end wall and is surrounded by the wall; Each of the terminal strips includes a socket terminal portion for supporting the base of the wedge-shaped base bulb and for electrically connecting the base, and a power supply terminal portion for electrically connecting the bulb socket to the outside, wherein the socket terminal portions are provided in the bulb. Disposed in the bulb insertion hole of the socket, the power supply terminal portions are disposed in the power supply connector, each portion of the socket terminal portions is sandwiched between the terminal strip supports and the wall, and each of the terminal strips Is provided with at least one adjusting piece for preventing the base of the wedge-shaped base bulb from moving in the direction in which the filaments of the bulb extend, wherein the base is sandwiched between the adjusting pieces in the direction in which the filaments extend. Wedge bay, characterized in that The socket for the bulb. 7. The terminal of claim 6, wherein the first terminal strip of the terminal strips comprises: a main portion extending vertically and first and second socket terminal portions protruding at different lengths from each of the upper and lower edges of the main portion; And first and second socket terminals respectively extending from end portions of the second socket terminal portion, wherein the first and second socket terminals have a front end bent downward and upward in a hairpin shape and extend rearwardly. A socket for a wedge-shaped base bulb, characterized in that arranged in an offset relationship with respect to each other in the vertical direction of the main portion. 8. The method of claim 7, wherein the adjusting piece of the first terminal strip has a trapezoidal protrusion, a pair of parallel slits formed in the vertical middle of the main portion, and raised to the right to form the trapezoidal protrusion and between the slits. A socket for a wedge-shaped base bulb, comprising a region to be sandwiched. 7. A terminal terminal according to claim 6, wherein the second terminal strip of the terminal strips comprises: a generally parallel cuboid main portion, a support and socket terminal portion extending side by side from the front edge of the main portion, and a socket terminal extending from the front end of the socket terminal portion. And a connection part extending downward from the left edge of the rear of the main part, and a power supply terminal part extending from the lower edge of the connection part, wherein the socket terminal is bent downward in a hairpin shape, and the support part is also bent downward. The front end of the support portion is bent up the socket for wedge-shaped bulb, characterized in that to form a hook-shaped support piece. 10. The terminal of claim 9, wherein the third terminal strip of the terminal strips comprises: a main portion that is generally parallel cuboid, a support and socket terminal portion extending side by side from the front edge of the main portion, and a socket terminal extending from the front end of the socket terminal portion. And a connecting portion extending downward from the left edge of the rear of the main portion, and a power supply terminal portion extending from the lower edge of the connecting portion, wherein the socket terminal is bent upward in a hairpin shape and the support is also bent upward. The front end of the support portion is bent downwardly to form a hook-shaped support piece, the socket for the wedge-shaped base bulb. 12. The method of claim 10, wherein the adjusting piece of the first terminal strip has a trapezoidal protrusion, a pair of parallel slits formed in the vertical middle of the main portion, and raised to the right to form the trapezoidal protrusion and between the slits. A socket for a wedge-shaped base bulb, comprising a region to be sandwiched. The main part of claim 6, wherein the bulb socket is formed along the inner surfaces of the upper, lower, left, and right walls together with the bulb insertion holes, and the inner surfaces of the upper, lower, left, and right walls to retain the terminal strips. And a pair of ribs extending forward from the rear end wall of the rear end wall, and a pair of ribs raised from inner surfaces of the upper and lower walls. 13. The socket of claim 12 wherein said bulb socket further comprises a pair of block-shaped terminal strip supports formed on opposite sides of said pair of ribs. 7. The socket for a wedge-shaped base bulb according to claim 6, wherein the bulb socket is formed with slits matching the shape of each of the terminal strips.