KR100339617B1 - Bulb socket - Google Patents

Abstract

An object of the present invention is to simplify the configuration of a contact embedded in a bulb socket and to facilitate manufacturing and lower cost.

In the bulb socket which is integrally formed with the bulb support part which supports a wedge base bulb, and the connector part connected to an external connector, The socket main body 11 which has the front-end opening 101 into which the base part of a wedge base bulb is inserted, A contact 20 is built in the socket body 11. In the front end opening 101, the clamping piece part 103 which absorbs the fluctuation | variation of the clamped base part is provided with the socket main body 11 integrally. The contact 20 connects the contact 20 by which the bulb contact part 21 which the electrode provided in the base part contacts, the connector connection part 22 built-in arrange | positioned at the connector part, and the bulb contact part 21 and the connector connection part 22 are connected. ) Is provided in the socket main body 11 in a close state, and a support seat 23 is provided, and the support seat 23 is provided with a reinforcing piece portion 214 which is bent. It is not necessary to provide a pressure-reducing piece for absorbing the shaking motion in the contact 20, and the structure of the contact can be simplified, so that the manufacture can be made easier and the cost can be realized.

Description

Bulb socket {BULB SOCKET}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb socket used for mounting a bulb serving as a light source of a luminaire to a luminaire housing, and more particularly to a bulb socket for a wedge base bulb in which no detention exists.

In automotive luminaires, wedge base bulbs with no detention are used as light sources for light sources. This wedge base bulb constitutes a part of the bulb part which consists of glass as a base part, and installs the electrode in the said base part which is electrically connected to the filament built in the bulb part. Therefore, in a wedge base bulb, when the said base part is inserted into a bulb socket, the electrode extended in the base part will contact with the contact provided in the bulb socket, and electrical connection will be performed. 6 is an exploded perspective view showing a part of an example of a conventional bulb socket, wherein the wedge base bulb 30 has a base portion 31 integral with the bulb portion 35 having a plate shape, and the base portion 31. A pair of electrodes 33 electrically connected to the filament 32 along both sides of the side is provided. Moreover, the wedge-shaped convex part 34 for preventing the fall of a bulb is provided in the both side surfaces of the said base part 31 later. On the other hand, the bulb socket 10A is provided with a bulb support portion 12A formed in a cylindrical shape close to a rectangle into which the base portion 31 of the wedge base bulb 30 can be inserted into the socket body 11A. . The socket body 11A is provided with a connector portion 13A integrally with the bulb support portion 12A, and a power supply connector connected to a power supply mounted in a vehicle (not shown) is detachably configured. Furthermore, the socket main body 11A is also provided with a bayonet portion 14A for attaching and detaching the bulb socket 10A to the socket attachment hole provided in the reflector of the luminaire.

Here, in the bulb support part 12A, a pair of contacts 20A processed with a metal plate are embedded, and contact each electrode 33 of the wedge base bulb 30 fitted in the bulb support part 12A. Electrical connection is performed. Since the contact 20A makes electrical contact by contacting the electrode, a bulb contact portion 221 is formed in which a tongue-shaped portion is bent in a substantially U-shape in the plate thickness direction. In addition, at the position parallel to the bulb contact portion 221, a coupling piece 222 that can be coupled to each of the wedge-shaped protrusions 34 on both sides of the wedge base bulb 30 is integrally formed. 222 is bent in the shape of a mountain at its tip. Further, the opposite side adjacent to the bulb contact portion 221 is formed with a bent portion 223 that is bent at right angles in the planar direction, and the bent portion 223 is formed in three pieces by a pair of slits. The one-piece part 224 protrudes slightly inward. In addition, the other side portion of the bent portion 223 is bent at a right angle in the plane direction, and its lower edge protrudes downward, so that the connector portion 12A when the contact 20A is inserted into the socket body 11A. The connector contact part 225 which comprises the electrical connection part in () is extended.

In the bulb socket 10A incorporating the above-described contact 20A, when the base portion of the wedge base bulb is inserted into the bulb support portion, the cross-sectional structure in the planar direction thereof is shown in FIG. The bulb contact part 221 elastically contacts each electrode 33 arrange | positioned at the both sides of the base part 31, and electrical connection is performed. At the same time, the engagement piece 222 is elastically coupled to the wedge-shaped convex portions 34 on both sides of the base portion 31, thereby preventing the base portion 31 from falling off from the bulb support portion 12A. do. Furthermore, since the pressing piece portions 224 provided in the bent portion 223 are in contact with both end faces of the base portion 31, the base portion 31 is sandwiched by each pressing piece portion at both ends in the longitudinal direction thereof, and the bulb supporting portion The fluctuation in 12A is prevented.

In such a conventional bulb socket, the contact 20A is coupled to the wedge-shaped convex portion 34 of the base portion 31 in addition to the bulb contact portion 221 as a contact piece originally required for making electrical connection to the wedge base bulb. Since the coupling piece 222 for preventing the base bulb 30 from falling off and the bent portion 223 and the pressing piece 224 for absorbing the fluctuations in the longitudinal direction of the base part 31 are required, the contact 20A ), The structure is complicated, and the machining operation of the contact is complicated. In addition, although the copper material is used for 20 A of contacts, the area of the board | plate material required by providing the coupling piece 222 and the bend part 223 becomes large, and the obstacle in reducing a bulb socket is cost-effective. There is also a problem that becomes.

An object of the present invention is to provide a bulb socket that simplifies the structure of a contact and realizes ease of manufacture and low cost.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the bulb socket of this invention, and a bulb socket, a bulb, and a reflector part.

2 is a plan view of the bulb socket of FIG.

3 is a cross-sectional view taken along line AA of FIG. 2.

Figure 4 is a perspective view broken in part to explain the internal structure of the bulb socket of Figure 1;

5 is a cross-sectional view of the bulb inserted into the bulb socket.

6 is a perspective view of an example of a conventional bulb socket.

Figure 7 is a cross-sectional view of the bulb sandwiched in a conventional bulb socket.

<Explanation of symbols for main parts of drawing>

10: bulb socket

11: socket body

12: bulb support

13 connector

14: bayonet part

20: contact

21: bulb contact

22: connector connection

23: support seat

30: wedge base bulb

31: base part

33: electrode

40: reflector

41: socket attachment hole

42: jamming groove

101: opening

102: hook portion

103: suppression part

104: contact support groove

105: bottom wall

105a: contact insertion groove

105b: slit groove

212 electrode contact piece

214: reinforcement piece

216 tip end

The present invention relates to a bulb main body supporting a wedge base bulb, a bulb socket in which a connector portion connected to an external connector is integrally formed, the socket body having an opening into which the base portion of the wedge base bulb is fitted, and the socket body. And a contact portion integrally formed with the socket body in contact with the base portion inserted into the opening and absorbing fluctuation of the base portion, the contact having a base portion of the wedge base bulb. A bulb contact portion in contact with the electrode provided in the contact portion, a connector connection portion disposed in the connector portion, and a support seat portion for connecting the bulb contact portion and the connector connection portion to support the contact in close contact with the socket body. The support seat, and perpendicular to the plane direction of the support seat. And a reinforcing piece portion bent in a direction. Here, it is preferable that the bead is formed in each of the bent part which forms the boundary of the said support seat part and the said bulb contact part, and the bend part which forms the boundary of the said support seat part and the said connector connection part. Further, it is preferable that the slit groove into which the reinforcing piece is inserted is formed in the socket body in the opening. Moreover, the said pressing piece is formed in tongue shape between a pair of slits cut out from the edge of the opening in the both ends of the longitudinal direction of the said opening part, and the convex part is provided in the inner surface of the front-end | tip part of the said pressing piece part. .

In the present invention, by integrally providing the pressing piece for absorbing the swing of the base portion of the wedge base bulb in the opening of the socket body, it is not necessary to provide the pressing piece for absorbing the swing of the contact, and the configuration of the contact is simplified. It is easy to realize the ease of manufacture and cost reduction. In addition, the structure of the contact is simplified, and the mechanical strength of the contact is secured by providing a reinforcing piece or a bead in the contact.

EMBODIMENT OF THE INVENTION Next, embodiment of this invention is described with reference to drawings. 1 is a perspective view of an embodiment of the present invention. 2 is a plan view thereof, and FIG. 3 is a front view taken along the line AA of FIG. 2. The bulb socket 10 includes a socket main body 11 having a cylindrical shape formed by resin molding, and the front end of the socket main body 11 is configured as an angled cylindrical bulb support 12. The rear end at the lower side of the figure is configured as a connector portion 13 having a different shape. Further, the socket body 11 in the boundary area between the bulb support 12 and the connector 13 is formed in a cylindrical shape, and is configured as a bayonet portion 14 for mounting the bulb socket 10 on the luminaire side. have. In the socket body 11, a plurality of metal pieces such as copper plates are processed from the bulb support part 12 to the connector part 13, and here, two contacts 20 are inserted into the socket body 11. Built-in support. Although the said contact 20 is mentioned later in detail, the bulb contact part 21 which functions as a bulb socket in the said bulb support part 12, and the connector connection part 22 which functions as a connector piece in the said connector part 13 is mentioned. And a support seat 23 provided between the bulb contact portion 21 and the connector connecting portion 22 to support the contact 20 to the socket body 11. In addition, the wedge base bulb 30 fitted into the bulb socket 10 is the same as the conventional one, and the filament embedded in the bulb part 35 is formed in the base part 31 formed integrally with the bulb part 35. A pair of electrodes 33 electrically connected to 32 are arranged along both sides of the base portion 31. In addition, the wedge-shaped convex part 34 is provided in the both sides of the said base part 31 in the substantially center position, respectively, as before.

The socket main body 11 is detachable from the socket attachment hole 41 of the reflector 40 by the bayonet portion 14. The bayonet portion 14 has an outer shape of the socket body 11 having a cylindrical shape, and a plurality of locking {counter} projections 112 protrude in the radial direction on the circumferential surface thereof. The protrusion 112 has a tapered shape at one end in the circumferential direction, and is hung circumferentially at the circumferential edge of the circular socket attachment hole 41 provided on the rear surface of the reflector 40. It corresponds to the groove 42, and each locking protrusion 112 is comprised so that each locking groove 42 can be penetrated. In addition, a disk-shaped flange 113 is integrally formed on the circumferential surface at intervals substantially equal to the thickness of the reflector 40, that is, at a minute interval, that is, in the cylindrical axis direction. have. The flange 113 is formed with pairs of slits 114 arranged at minute intervals extending in directions intersecting with the circumferential direction, respectively, at positions substantially divided into four circumferential directions. Between the slits 114, four sandwiching pieces 115 to 118 are formed, respectively, that is, tongue-like gripping pieces. Each of the clamping pieces 115 to 118 has a tip end portion, and a contact protrusion 115a to 118a protruding in a smaller dimension from the front face of the flange 113 on a surface opposite to the locking projection 112. Is formed.

The bulb support part 12 is formed in the shape of a square cylinder having an almost flat rectangular opening shape corresponding to the shape of the base part 31 of the wedge base bulb 30, and the front end opening 101 thereof. The base portion 31 of the wedge base bulb 30 can be fitted inside. As shown in FIG. 4, a part of the internal structure thereof, in the front end opening 101 of the bulb support 12, each opposing surface of the inner surface of each long side, in other words, a wedge base bulb, for internally supporting the contact. An inverted U-shaped contact support groove 104 having a flat plane shape is formed at a position corresponding to the pair of electrodes. In addition, a contact insertion through-groove into which the contact connecting portion 22 of the contact 20 is inserted is inserted into the bottom wall 105 which functions as a bottom surface of the bulb support 12 and as a partition wall with the contact portion 13. 105a is opened. Further, a narrow slit groove 105b is formed on the upper surface of the bottom wall 105 at a position adjacent to the contact insertion groove 105a.

Further, in the front end opening 101, a wedge-shaped convex portion 34 provided at the base portion 31 of the wedge base bulb 30 at a position substantially centered in the long side direction and opposite to the short side direction, respectively. Engaged in the engaging portion 102 for preventing the wedge base bulb 30 from falling off is integrally formed. These locking pieces 102 protrude from the inside of the bulb support part 12 toward the front end direction, and convex portions 102a are formed on the opposing surfaces of the tip portion thereof. For this reason, as shown in Fig. 5, each engaging piece portion 102 is provided with an elastic force that can be stiffened in the fragment direction in the shear opening 101, and each convex portion provided at each distal end portion ( 102a) is configured to be coupled to each of the wedge-shaped convex portions 34 of the base portion 31 of the wedge base bulb 30. Furthermore, both ends of the front end opening 101, i.e., each of the short sides, are short. A pair of slits 101a are cut out from the edges of the opening, respectively, and tongue-shaped clamping piece portions 103 are formed between the slits 101a. Each of the pressing pieces 103 is provided with a convex portion 103a on an inner surface of the tip portion thereof, and as shown in FIG. 5, a wedge base bulb in which these convex portions 103a are inserted into the shear opening 101. In contact with both end faces of the base part 31 of 30, the fluctuation of the longitudinal direction of the base part 31 in the said front end opening part 101 is absorbed.

As shown in Fig. 4, the contact 20 is bent one piece of metal, and its front end region is configured as the bulb contact portion 21 of the bulb support portion 12, and the other end region is the connector. It is comprised as the connector connection part 22 of the part 13. In addition, a support seat 23 is provided between the bulb contact portion 21 and the connector contact portion 22 as described above. The contact 20 is supported in the socket body 11 in a fixed state by being inserted into the bulb support 12 from the front end opening 101 side in the socket body 11. In this supported state, the bulb contact portion 21 is located in the bulb support portion 12, and the connector connection portion 22 is located in the connector portion 13, respectively as an electrical connection portion of the bulb support portion 12, and It functions as an electrical connection part of the connector part 13, respectively.

The bulb contact portion 21 is formed by bending the tip portion 212 of the straight strip 211 toward the proximal end and bending it in a substantially U-shape toward the inner surface side. In one piece 212, the electrode 33 of the wedge base bulb 30 can be contacted. In addition, on both sides of the one-sided portion 211 of the bulb contact portion 21, wing pieces 213 fitted into the contact support grooves 104 provided in the socket body 11 protrude outward in the width direction, respectively. Formed. In addition, the support seat 23 is bent in a crank shape in the plate thickness direction with respect to the bulb contact portion 21, and bent toward a direction perpendicular to the planar direction of the support seat 23 along one side thereof. The reinforcing piece part 214 for preventing the torsional deformation of the support seat part 23, etc. is provided. The support seat 23 contacts the upper surface of the bottom wall 105 of the socket body 11 on its rear surface to support the contact 20, and the reinforcing piece portion 214 is provided on the bottom wall 105. It fits in the slit groove 105b. In addition, the contact connecting portion 22 has a wide base portion 215, and the tip portion 216 has a portion of both sides thereof folded back in the plate thickness direction, and is provided on the bottom wall 105 of the socket body 11. It penetrates into the contact insertion groove 105a. The wide base 215 is provided with a cut-up piece 217. After inserting the contact insertion groove 105a therein, the contact 20 is hooked to the opening edge of the connector side. Is prevented from coming off. In addition, the bead 218 is provided in the part in which the board | plate material is bent at right angles, respectively, as each boundary part of the said support seat part 23, the bulb contact part 21, and the connector connection part 22, and the contact 20 in these boundary parts is provided. This prevents buckling and increases its mechanical strength.

On the other hand, in this embodiment, the connector part 13 is formed in a U-shaped cylindrical shape seen from the rear end, and the connector connection part 22 of the contact 20 protrudes toward the opening side at its inner bottom. Supported. Therefore, by fitting the power supply side connector (not shown) which is comprised in the shape corresponding to the said connector part 13 to the said connector part 13, the connector piece of the power supply side contact is made to contact the said connector connection part 22. It is designed to be electrically connected to each other.

According to the bulb socket 10 of the above-mentioned structure, when the base part 31 of the wedge base bulb 30 is inserted in the bulb support part 12 of the socket main body 11, the base part ( The bulb contact portions 21 of the contacts 20 embedded in the socket main body 11 are brought into contact with the electrodes 33 provided at the 31, and electrical connection is performed. At the same time, the tip convex portion 102a of the engaging piece portion 102 integrated with the socket body 11 provided in the front end opening 101 is provided on the wedge-shaped convex portions 34 on both sides of the base portion 31. The convex part 102a and the wedge-shaped convex part 34 are elastically engaged by the elastic force which the engaging piece part has, and it prevents the base part 31 from falling out in the bulb support part 12 by this. do. Furthermore, since the convex portions 103a of the suppressing piece portions 103 provided on each short side of the front end opening portion 101 are in contact with both end faces of the base portion 31, the base portion 31 is in the longitudinal direction thereof. It is in the state clamped at both ends, and the fluctuation | variation of the base part 31, ie, the wedge base bulb 30 in the bulb support part 12 is prevented by this.

Therefore, since the wedge base bulb 30 supported in the bulb support part 12 is prevented from falling out and absorption of the fluctuation by the latching piece part 102 and the clamping piece part 103 which are integrally provided with the socket main body 11, As in the prior art, it is not necessary to form the engaging piece or the pressing piece in the contact 20, and as shown in FIG. 4, it is almost as simple and easy as the configuration in which the plate is bent in the plate thickness direction. Can be. For this reason, manufacture of the contact 20 becomes easy, and the latching part and the bend part like the conventional thing become unnecessary, and the area of a board | plate material is reduced and cost reduction is attained. On the other hand, the need for the bent portion may reduce the strength of the contact itself, especially the torsion between the bulb contact portion 21 and the contact connecting portion 22, but the support seat 23 is in close contact with the bottom wall 105. It is supported in the state, and the reinforcing piece part 214 is provided in the support seat 23 in the vertical direction, and this reinforcing piece part 214 is provided in the slit groove 105b of the bottom wall 105 of the socket main body 11. By inserting, the torsional strength of the contact 20 can be raised and its shape can be maintained. In addition, the bead 218 provided in each of the bent portions of the support seat 23, the bulb contact portion 21, and the connector connecting portion 22 can also increase the strength against deformation.

Moreover, in the said embodiment, although this invention is applied to the bulb socket which uses the wedge base bulb of 1 filament type | mold, also in the bulb socket to which the 2 filament-type wedge base bulb to which two pairs of electrodes are arrange | positioned at the base part is applied. It goes without saying that the present invention can be equally applied.

As described above, the present invention is provided with a reinforcing piece integrally with the socket body in contact with the base portion inserted into the opening for supporting the wedge base bulb and absorbing the fluctuation, and the contact embedded in the socket body has a wedge base bulb. A bulb contact portion in contact with the electrode provided in the base portion of the base portion, a connector connection portion disposed in the connector portion, and a support seat portion for connecting the bulb contact portion and the connector connection portion to support the contact closely to the socket body. Since the seat portion is provided with a bent reinforcing piece, it is not necessary to provide the contact piece for absorbing the fluctuation of the contact, thereby simplifying the structure of the contact, facilitating manufacture and reducing the cost, while Secure mechanical strength In addition, by providing a bead to the contact or inserting the reinforcing piece into the slit groove of the socket body, the strength of the contact can be further improved.

Claims (4)

In the bulb socket which is integrally formed with a bulb support portion for supporting the wedge base bulb and a connector portion connected to the external connector, A pressurizing piece portion having a socket body having an opening portion into which the base portion of the wedge base bulb is fitted, and a contact embedded in the socket body, and contacting the base portion sandwiched in the opening portion to absorb fluctuations of the base portion. A socket contact portion integrally provided with the socket body, wherein the contact includes a bulb contact portion to which an electrode provided at a base portion of the wedge base bulb contacts, a connector connection portion disposed in the connector portion, and a bulb contact portion; A reinforcing piece portion bent in a direction orthogonal to the planar direction of the support left portion, including a support seat portion for connecting the connector connection portion to support the contact in close contact with the socket body. And a bulb socket. The bulb socket according to claim 1, wherein a bead is formed in each of a bent portion that is a boundary between the support left portion and the bulb contact portion and a bent portion that is a boundary between the support left portion and the connector connection portion. The bulb socket according to claim 1 or 2, wherein a slit groove into which the reinforcing piece is inserted is formed in the socket body in the opening. The said clamping piece part is a tongue piece shape between a pair of slits cut | disconnected from the edge of an opening in the both ends of the longitudinal direction of the said opening part, The said clamping piece part of Claim 1 or 2 characterized by the above-mentioned. Bulb socket, characterized in that the convex portion is installed on the inner surface of the distal end portion.