JP3776248B2 - Lamp socket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lamp socket such as a high voltage socket applied to a vehicle headlamp using a high intensity discharge lamp (HID) or the like.
[0002]
[Prior art]
The high voltage socket of the conventional example (for example, JP-A-7-037196 and 7-033246) holds and fixes the lamp socket 151 to the lamp 150 held by a lamp body (not shown) as shown in FIG. In order to achieve this, a bayonet structure using elastic deformation of the resin has been used. In addition, 152 is a lamp body, 153 is an engaging pin, 154 is a discharge part, 155 is a glass tube, 156 is an outer electrode part, 157 is a bayonet-type locking part, 158 is a pin holding part, and 159 is a harness part. . The central electrode portion of the lamp cap is provided concentrically at the center of the cap cylinder portion where the outer peripheral electrode portion is provided.
[0003]
When the socket locking pin is inserted into the notch 160 at the tip of the locking portion 157 by moving the lamp socket 151 in the direction of the arrow (1), the result is as shown in FIG. When the subsequent operation of arrow (2) causes the locking portion 157 to be elastically deformed as shown in FIG. 24B and the engaging operation is advanced so that the engaging pin 153 fits into the pin holding portion 158, FIG. As shown in FIG.
[0004]
[Problems to be solved by the invention]
Conventional HID lamp sockets for automobiles are mainly used for rotational fitting, and are easy to remove when mounting the lamp socket in a very limited space in the lamp body of an automobile, and have a click feeling (completed mounting). In order to withstand vibrations of automobiles, a structure that gives a click feeling and strength with a single resin spring as shown in the figure is generally used.
[0005]
Further, in order to make the resin spring part (bayonet part) perform a holding function in a very high temperature situation in the lamp body, it is necessary to make the resin spring part strong and large. Therefore, it was very difficult to balance the click feeling.
[0006]
Originally, if the rigidity of the holding portion is increased, the feeling of mounting and the mounting torque will increase reliably, making it difficult to fit. Mounting torque and feeling that eliminate this difficulty are weak in vibration resistance and impact resistance, and also cause phenomena such as creep deformation at high temperatures, and sufficient power is supplied to the lamp by deformation of the lamp holder. There was a possibility that a failure mode would occur in which the headlights were not turned on without being able to do so.
[0007]
Further, the loose contact cannot be completely prevented only by the three-wire system having an interlock function using one of the pair of outer electrodes.
[0008]
Accordingly, an object of the present invention is to provide a lamp socket capable of obtaining a reliable mounting feeling while ensuring durability of vibration resistance and shock resistance at high temperatures.
[0009]
[Means for Solving the Problems]
  The lamp socket according to claim 1 has a socket opening for engaging with a lamp base having an engagement portion on an outer peripheral surface, and has a locking portion for locking the engagement portion.In addition, a central cylindrical portion is provided at the center of the socket opening, and a sliding groove extending in the axial direction is provided on the inner peripheral surface of the socket opening.Socket body and this socket bodyStored in the central tubeA central electrode in contact with the central electrode portion of the lamp base; an outer electrode provided on the socket body and in contact with an outer electrode portion of the lamp base; and the socket bodyIs inserted into the outside of the central tube portionA push-up member that contacts the lamp base when the lamp base is fitted to the socket body, and the socket bodyInserted into the outside of the central tube portionAn elastic body that presses the push-up member in a direction in which the lamp cap is detached.,
The push-up member has a protrusion on the outer periphery thereof that slidably engages with the sliding groove of the socket body, and an entrance through which the protrusion can engage with the sliding groove from the front side of the socket body Formed in the sliding grooveIs.
[0010]
According to the lamp socket of claim 1, for example, in a socket such as an HID lamp, a push-up member supported by an elastic body is attached to a socket to which a high voltage pulse for lighting the lamp is applied, and the lamp is removed. By pressing in the direction, half-fitting between the lamp base and the socket body can be prevented, and a stable contact state can be ensured, and troubles such as smoke and fire due to loose contact can be prevented.
[0012]
  Also,Assembling the push-up member from the socket openingBecause you canThe through-hole portion of the socket body is reduced, and it becomes easier to insulate the center electrode and the outer electrode, thereby reducing the size. On the other hand, when the push-up member for preventing loose contact is assembled from the bottom of the socket, it is difficult to design high voltage insulation, and the lamp socket becomes large.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, the high voltage socket includes a socket body 1, a center electrode 2, outer electrodes 3 and 4, a push-up member 5, and an elastic body 6.
[0026]
The socket body 1 has a socket opening 10 that fits into a lamp base having an engagement portion 12 on the outer peripheral surface, and a locking portion 7 that locks the engagement portion 12. Since the lamp cap is the same as that shown in the conventional example, it is omitted. That is, the engaging portion 12 uses an engaging pin. The socket body 1 according to the embodiment includes a socket body 8 and a socket cover 9, the socket bottom portion of the socket body 8 is constituted by the cover 9, and the outer electrodes 3 and 4 are attached to the socket cover 9. 2 (a) and 3 (a), the socket body 8 is substantially cylindrical as a whole, has a bottomed socket opening 10 at one end, and has a bottom side at the center of the socket opening 10. A central cylindrical portion 11 that rises further is provided, and a pair of outer electrode hole portions 15 are formed in the inner peripheral surface of the socket opening 10 by notches. A recess 16 and a hooking hole 17 for locking the socket cover 9 are formed at the other end of the socket body 8. Further, a plurality of bayonet-type locking portions 7 are provided in the circumferential direction as shown in FIG. One end of the locking part 7 is provided integrally with the peripheral edge of the socket opening 10 and the other end extends in the circumferential direction. The rear end of the locking part 7 adjacent to the tip of the locking part 7 Is formed with a longitudinal groove 14 for inserting the engaging portion 12 in the lamp axis direction and an L-shaped groove continuous with the lateral groove 20, and the locking recess 13 for retaining at the locking position is locked. It is formed on the inner surface of the tip of the part 7. When the lamp cap 47 is inserted into the socket opening 10, the engaging portion 12 is inserted into the longitudinal groove 4 of the locking portion 7, and when the socket body 1 is rotated, the engaging portion 12 enters the lateral groove 20 and enters the locking recess 13. Lock and stop. At this time, the central electrode portion at the center of the lamp cap 47 is fitted into the central tube portion 11.
[0027]
The socket cover 9 has a fitting portion 18 that fits into the recess 16 of the socket body 8 and a hooking claw 19 that hooks into the hooking hole 17. The fitting portion 18 is inserted into the recess 16, and the hooking claw 19 is inserted into the hooking hole 17. The cover 9 is attached to the socket body 8 by being locked.
[0028]
The center electrode 2 is provided on the socket body 1 and contacts the center electrode portion of the lamp base 47. In the embodiment, it has a U-shaped configuration sandwiched and in contact with the peripheral surface of the central electrode portion, and is inserted into the central cylindrical portion 11 from the back side of the central cylindrical portion 11 of the socket body 8, that is, from the cover mounting side. The high voltage line 24 is connected to the central electrode 2. Further, the socket body 8 is provided with a guide / insulating wall 25 for drawing out the high-voltage line 24 from the opening 26 on the side of the socket body 8 to the outside.
[0029]
The outer electrodes 3 and 4 are provided on the socket body 1 and contact the outer electrode portion of the lamp cap. In the embodiment, the outer electrodes 3 and 4 are provided on the socket cover 9, and the socket cover 9 is attached to the socket body 8 so that it can be connected to the outer electrode portion of the lamp cap 47 located in the outer electrode hole portion 15. It faces the inner peripheral surface of the socket opening 10. A low-voltage line 22 is connected to one of the outer electrodes 3 and 4, and a control line 23 is connected to the other. The low-voltage line 22 and the control line 23 are arranged outside the guide / insulating wall 25 of the high-voltage line 24 and are wired so as to be exposed to the outside in the same direction as the high-voltage line 24. Each of the outer electrodes 3 and 4 is formed of the same component, and as shown in FIG. 4, one end of the flat plate 30 is formed in a bifurcated shape, and the contact portion 31 that contacts the outer peripheral electrode portion is bent, and the center of the other end is formed. The wire connection part 32 extending in the shape of a tongue is bent into a substantially U shape, and the attachment part 33 to be inserted is bent into a triangular waveform on both sides, and further, the contact part 31 is bent at the bifurcated branch center in FIG. As shown in a), the contact portion 31 is slightly bent in the opposite direction. The electric wires 22 and 23 to be connected to the electric wire connecting portion 32 are caulked to the electric wire connecting portion 32 in parallel with the lamp axis direction, so that the same parts can be shared symmetrically while keeping the electric wire drawing direction from the lamp socket. It is possible to reduce costs. Further, by making the wire connection direction of the outer electrodes 3 and 4 parallel to the socket front surface direction, the electrode holding portion 35 of the socket cover 9 that holds the outer electrodes 3 and 4 can be formed in a bag shape that opens in the lamp insertion direction. The distance can be increased. That is, the electrode holding part 35 is formed in a bag shape opened in the socket body connecting direction at a symmetrical position with respect to the center of the socket cover 9, the outer electrodes 3, 4 are inserted into the electrode holding part 35, and the attachment part 33 is held by the electrode It is press-fitted into and attached to a mounting portion clamping gap 35 a formed in the portion 35.
[0030]
The push-up member 5 is provided on the socket body 1 and abuts against the lamp base 47 in a state where the lamp base is fitted to the socket body 1. In the embodiment, the ring-shaped insulator is slidably inserted into the socket opening 10 and has a circumferential groove 37 at one end. The circumferential groove 37 of the push-up member 5 is slidably inserted into the socket opening 10 toward the socket opening 10.
[0031]
The elastic body 6 is supported by the socket body 1 and presses the push-up member 5 in the direction in which the lamp cap 47 is removed. In the embodiment, a compression type coil spring is used, inserted into the socket opening 10, one end thereof is supported on the bottom of the socket body 8, and the other end is fitted in the circumferential groove 37 of the push-up member 5. For this reason, the push-up member 5 is urged in a direction to be pushed out of the socket opening 10, and when the lamp base 47 is incompletely attached, the lamp base is pushed out to prevent incomplete insertion.
[0032]
FIG. 1A shows a state before the lamp base 47 is mounted, and FIG. 1B shows a state where the lamp base 47 is mounted. In this case, as described above, the engaging portion 12 of the lamp base 47 is locked to the locking recess 13 of the locking portion 7 by the inserting and rotating operation, but at the same time, the push-up member 5 is pressed by the lamp base 47 and the coil The spring is compressed. For this reason, the socket body 1 receives a pushing force in a direction away from the lamp cap 47, and the engaging portion 12 is firmly locked to the locking recess 13 without rattling.
[0033]
According to the first embodiment, a push-up member 5 supported by an elastic body 6 is attached to a socket or the like used for a lamp such as an HID lamp, to which a high voltage pulse for lighting the lamp is applied. By pressing in the direction to remove, the half-fitting between the lamp cap 47 and the socket body 1 can be prevented, a stable contact state can be ensured, and troubles such as smoke and fire due to loose contact can be prevented.
[0034]
Although the first embodiment is a three-wire socket that uses one of the outer electrodes 3 and 4 for a switch, a two-wire type that is not used for a switch may be used.
[0035]
FIG. 5B shows another form of a locking portion for receiving the engaging pin of the lamp cap, which is formed by a notch directed toward the longitudinal groove 14. FIG. 6A shows two engaging portions 7, a holding portion 38 of the engaging portion 12 and a click portion 39 that ensures a click feeling and also serves as a reverse rotation stopper that forms the engaging recess 13. These are divided and abutted against each other, holding the engaging portion 12 and ensuring a click feeling. This locking portion 7 is integrally provided with a T-shaped resin spring portion 40 at the periphery of the socket opening 10 with its center as the root, and an engagement portion holding portion 38 and a click portion 39 are provided at both ends thereof. By arranging a plurality (for example, four) of members 40 in the circumferential direction, the holding portion 38 and the click portion 39 are abutted. The longitudinal groove 14 is formed in a cutout shape on the inner peripheral surface of the resin spring member 40, the lateral groove 20 is formed by the click portion 39 and the holding portion 38, and the click portion 39 protrudes so as to narrow the width of the lateral groove 20. A locking recess 13 is formed inside the click part 39. With this structure, when the engaging portion 12 passes through the click portion 39 of the lateral groove 20, the click portion 39 is retracted by the elastic deformation of the resin spring member 40 and a click feeling is easily obtained, and the holding portion 38 is shortened, By reducing the force applied to the base of the resin spring member 40, it is possible to make it less susceptible to heat-resistant creep and vibration. Thus, by making the locking portion 7 functionally separate, there is an effect in improving vibration resistance and ensuring a click feeling.
[0036]
FIG. 6B shows a form in which the base portion of the resin spring member 40 in FIG. 6A is divided into two parts by the dividing part 42 and the holding part 38 and the click part 39 are separated.
[0037]
6C, instead of the click part 39 of FIG. 6B, the click part 39 is formed with a U-shaped cut groove 43 at the opening edge of the socket body 1, and a triangular protrusion is formed at the inner tip. 44 is provided.
[0038]
  A second embodiment of the present invention will be described with reference to FIGS. That is, this high voltage socket is configured such that the push-up member 5 is assembled from the socket opening 10 of the socket body 1 in the first embodiment. In the embodiment, a ridge extending in the axial direction at a symmetrical position on the outer peripheral surface of the push-up member 5.48Form. A sliding groove 49 for guiding the protrusion 48 is formed in the lamp axial direction on the inner peripheral surface of the socket opening 10 of the socket body 1, and a push-up member locking portion 50 is formed on the opening side of the socket opening 10. The sliding groove 49 is formed by a protrusion 51 formed on the socket body 8 and a sliding surface 52 formed on the socket cover 9, and the sliding groove 49 is formed by attaching the socket cover 9 to the socket body 8. The push-up member locking portion 50 is formed in an inverted J shape continuously with the protrusion 51, and the push-up member 5 is inserted from the front surface of the socket body 8 and hooked on the push-up member locking portion 50 to attach the socket cover 9 to the socket. The sliding groove 49 is formed at the same time that the push-up member 5 is assembled from the socket opening 10 by being attached to the body 8. By inserting the push-up member 5 into the socket opening 10, the center electrode 2 and the outer electrodes 3 and 4 are also insulated. Further, an insulating spacer between the central electrode 2 and the outer electrodes 3 and 4 is formed by the space between the central cylindrical portion 11 and the inner peripheral surface of the socket opening 10, thereby reducing the insulating distance on the back side of the socket body 8. This increases the number of parts for insulation.
[0039]
Other configurations are the same as those of the first embodiment.
[0040]
According to the second embodiment, by assembling the push-up member 5 from the socket opening 10, the through-hole portion of the socket body 1 can be reduced, and the center electrode 2 and the outer electrodes 3 and 4 can be easily insulated.
[0041]
A third embodiment of the present invention will be described with reference to FIGS. That is, in this high voltage socket, the bottom of the socket body 1 is constituted by the socket cover 9, and the outer electrodes 3 and 4 are attached to the socket cover 9 to ensure an insulation distance without increasing the shape. .
[0042]
First, FIGS. 10 to 11 show a case where the lamp base 47 is not mounted in the case of a three-wire type in which one of the outer electrodes 3 and 4 is used as a switch, and the configurations of the socket body 8 and the socket cover 9 are the first. This is the same as the first embodiment. 10A shows the back surface of the socket body 8, FIG. 10B shows the top surface of the socket cover 9, FIG. 11A shows a cross section of the socket body 8, and FIG. The cross section of the socket cover 9 is shown. FIG. 12 shows a state in which the lamp cap 47 is mounted. As the electrodes enter the socket cover 9 and the socket body 8 in this way, the support portions 55 of the outer electrodes 3 and 4 provided on the socket cover 9 become insulating walls, and the conventional insulation distance a is increased without increasing the outer shape. Can take.
[0043]
FIG. 13 shows a case of a two-wire type (without a switch control line). The insulating push-up member 5 is provided with an upper protrusion 5a protruding toward the socket opening 10 and a lower protrusion 5b protruding toward the socket cover 9. Is provided. Only one of the outer electrodes 3 and 4 may be provided.
[0044]
FIG. 13A shows the unmounted state, and FIG. 13B shows the mounted state. b to d are insulation distances indicated by bold lines, and can be made large.
[0045]
FIG. 14A shows a case of a three-wire system, and the insulating push-up member 5 is provided with a downward projecting portion 5b on the outer peripheral socket cover 9 side. In this case, the same insulation distance as that in FIG. 13B can be secured.
[0046]
Conventionally, in order to secure an insulation distance between the center electrode and the outer electrode when a high-voltage pulse is applied, the outer shape becomes large or another part such as a packing is required.
[0047]
A fourth embodiment of the present invention will be described with reference to FIGS. That is, a fitting cylindrical portion 62 that fits into a recess 61 that projects the central electrode portion 60 of the lamp base 47 is provided concentrically outside the central cylindrical portion 11, and between the fitting cylindrical portion 62 and the central cylindrical portion 11. The push-up member 5 is guided, an elastic body 6 is provided between the bottom of the socket body 1 and the push-up member 5, and the elastic body 6 is formed of an insulating material. In addition, the same code | symbol as 1st Embodiment is attached | subjected to the part which is common in 1st Embodiment etc.
[0048]
In FIG. 15, the elastic body 6 is a ring-shaped resin elastic body. FIG. 15A shows a state before the base is mounted, FIG. 15B shows a state where the lamp base 47 is mounted, and the lamp base 47 is pushed up. The member 5 is pushed, and the push-up member 5 pushes the elastic body 6 against the socket main body 1, whereby the elastic body 6 is brought into contact with the push-up member 5, the outer peripheral surface of the central cylindrical portion 11, and the inner peripheral surface of the fitting cylindrical portion 62. It adheres and this improves the insulation performance. Reference numeral 67 denotes an outer electrode portion of the lamp base 47 that contacts the outer electrode 3.
[0049]
In FIG. 16, a notch-shaped hole 63 is formed in the fitting cylindrical portion 62. FIG. 16A shows a state before the lamp base 47 is attached, and FIG. 16B shows a state where the lamp base 47 is attached. At this time, the elastic body 6 pushed by the push-up member 5 bulges outside through the notch-shaped hole 63 and comes into close contact with the tip of the peripheral edge of the lamp base 47, thereby improving the dielectric strength.
[0050]
According to this embodiment, by using an insulating material for the elastic body 6, it is possible to ensure insulation between the center electrode 2 and the outer electrode 3 without increasing the size of the lamp socket. On the other hand, if a metal spring made of a conductor is used as the elastic body for sliding the push-up member, it is difficult to design high voltage insulation, and the socket is likely to be enlarged.
[0051]
The fitting cylindrical portion 62 may be a structure divided in the circumferential direction or a complete cylindrical body, and the hole 63 may not be notched. The elastic body 6 can be applied to the first to third embodiments.
[0052]
A fifth embodiment of the present invention will be described with reference to FIG. In other words, the lamp socket is configured such that the center electrode 2 is in contact with the tip of the center electrode portion 60 of the lamp base 47 by pressing. In the embodiment, the plate-like electrode 65 that contacts the tip of the central electrode portion 60 and the electrode 65 are supported by an elastic body 6 such as a coil spring.
[0053]
Electric power is supplied through a dish-shaped electrode, but a lead wire may be connected to the electrode 65 or may be energized via the elastic body 6.
[0054]
According to this embodiment, the lamp center electrode portion 60 reliably contacts the lamp socket and the lamp electrodes regardless of the angle inserted by the lamp socket center electrode 2. Thus, the lamp socket can be stably contacted even when the lamp socket is incompletely attached, and smoke and fire due to high voltage application can be prevented. Moreover, since the height of the center electrode 2 can be reduced as compared with the structure in which the center electrode portion 60 is sandwiched, it is possible to suppress no-load discharge due to securing the insulation distance. By adjusting the spring force of the elastic body supporting the electrode, it is possible to obtain the action of repelling the lamp when the socket is not fully installed.
[0055]
In addition, although the same code | symbol is attached | subjected to the part which is common in 1st Embodiment etc., it is possible to apply this center electrode 2 to the above-mentioned 1st Embodiment to 4th Embodiment. is there.
[0056]
A sixth embodiment of the present invention will be described with reference to FIG. That is, in this lamp socket, the push-up member 5 is divided into at least two or more. In the embodiment, a first insulating push-up member portion 71 that is cylindrical and has a locking portion 70 at the upper end, and an engagement that can be fitted to the first insulating push-up member and can be locked to the locking portion 70. The elastic body 6 is engaged with the lower end portion of the second insulating push-up member portion 73.
[0057]
FIG. 6A shows a state before the lamp is mounted, and the second insulating push-up member 73 is pushed up by the elastic body 6 and pushes up the first insulating push-up member 71 via the engaging portion 72. Since the portions overlap and protrude from each other, an insulation distance between the center electrode 2 and the outer electrodes 3 and 4 is secured. FIG. 2B shows a lamp mounted state. At this time, the second insulating push-up member portion 73 is pressed against the elastic body 6 by the lamp cap 47, and the first insulating push-up member portion 71 comes into contact with the bottom, and the second insulating push-up member portion 73 is pressed. Is also held at substantially the same height as the first insulating push-up member 71. By mounting the lamp cap 47, the two cap members 71 and 73 overlapped and protruded and retracted separately to reduce the volume, thereby facilitating mounting of the lamp cap 47.
[0058]
Portions other than the above configuration are the same as those in the first to fifth embodiments.
[0059]
According to this embodiment, it is possible to prevent no-load discharge by securing an insulation distance between the electrodes 2, 3 (4), and in the socket by making the push-up member 5 multi-stage composed of a movable wall. Space saving. On the other hand, if the push-up member is composed of a single component, it is difficult to reduce the size of the socket. Note that the number of divisions of the push-up member 5 may be three or more.
[0060]
A seventh embodiment of the present invention will be described with reference to FIGS. That is, in this lamp socket, the connection between the lamp base 47 and the socket body 1 is based on a linear operation in the lamp axis direction. In the embodiment, as shown in FIG. 19 and FIG. 20, a pair of vertical grooves 14 and 14 a whose upper ends are open at the upper ends of the inner peripheral surfaces on the inner peripheral surface of the socket opening 10 of the socket body 1, and horizontal grooves that connect these A substantially U-shaped groove formed of 20 is formed, and the engaging portion 12 is slidably inserted into the groove, and the groove bottom of one vertical groove 14 is connected to the socket body 1 at its open end. A check claw 80 connected by 80a is formed, and the check claw 80 prevents and locks the engaging portion 12.
[0061]
FIG. 21A shows a state in the middle of the engagement portion 12 being pushed into the longitudinal groove 14 by pushing the check claw 80. At this time, the check claw 80 is twisted by elastic deformation of the end connecting portion 80a. Accordingly, the engaging portion 12 is retracted and the engaging portion 12 is inserted. FIG. 5B shows a state in which the engagement portion 12 has completed insertion, the connecting portion 80a has elastically restored, the tip of the claw 80 is locked to the engagement portion 12, and the engagement portion 12 is prevented from being removed. is there. At this time, as shown in the drawing, the tip of the claw 80 is slightly retracted from the connecting portion of the vertical groove 14 to the horizontal groove 20, and the engaging portion 12 is hooked on the vertical groove 14 and is pushed up by the push-up force of the push-up member 5. It is pressed against the tip of the nail 80. For this reason, the engaging part 12 cannot freely move to the lateral groove 20, and the lamp socket is securely held by the lamp. FIG. 4C illustrates the operation in the middle of removing the lamp from the lamp socket. The lamp socket is pressed against the spring force of the push-up member 5 so that the engaging portion 12 is positioned in the lateral groove 20 and the lamp and lamp By rotating the socket relatively, the engaging portion 12 is moved along the lateral groove 20. FIG. 4D shows a state in which the engaging portion 12 is positioned on the other side of the vertical groove 14a, and the lamp and the lamp socket are detached by the pushing force of the push-up member 5.
[0062]
According to the seventh embodiment, since the lamp base 47 and the socket body 1 can be mounted in a linear motion, the workability is good and the layout of the lamp body is easy.
[0063]
FIG. 22 shows still another embodiment. As shown in the first embodiment to the sixth embodiment shown in FIG. 22A, the socket body 1 is drawn straight from the center bottom to the side. On the other hand, as shown in FIG. 5B, the insulating guide portion 25a for guiding the high voltage line 24 is formed so as to be detoured in a substantially inverted J shape. The insulation distance x shown in (a) can be increased to the insulation distance y, and on the contrary, the protrusion amount of the lead wire protrusion 85 on the side of the socket body 1 can be reduced by, for example, p, so that the lamp socket can be miniaturized. Become.
[0064]
As yet another embodiment, the socket body 1 may be formed of a transparent resin. In this case, by using a transparent material, the fitting state of the engaging portion 12 of the lamp base 47 and the locked state of the engaging portion 12 are easy to see and easy to confirm. Note that the lead-out portion for the low-voltage line is secured in substantially the same manner as in the first embodiment.
[0065]
【The invention's effect】
According to the lamp socket of claim 1, for example, in a socket such as an HID lamp, a push-up member supported by an elastic body is attached to a socket to which a high voltage pulse for lighting the lamp is applied, and the lamp is removed. By pressing in the direction, half-fitting between the lamp base and the socket body can be prevented, and a stable contact state can be ensured, and troubles such as smoke and fire due to loose contact can be prevented.
[0066]
  Also,Assembling the push-up member from the socket openingBecause you canThe through-hole portion of the socket body is reduced, and it becomes easier to insulate the center electrode and the outer electrode, thereby reducing the size. On the other hand, when the push-up member for preventing loose contact is assembled from the bottom of the socket, it is difficult to design high voltage insulation, and the lamp socket becomes large.
[Brief description of the drawings]
1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a sectional view before mounting a lamp, and FIG.
2A and 2B show a state in which a socket body is separated, in which FIG. 2A is a sectional view of a socket body, and FIG. 2B is a side view of a socket cover.
3A is a rear view of the socket body, and FIG. 3B is a front view of the socket cover.
4A and 4B show one outer electrode, where FIG. 4A is a plan view and FIG. 4B is a front view.
FIG. 5 is a perspective view of a lamp socket in which each lamp locking portion has another form.
6A is a perspective view of a lamp socket in which the locking portion is further different in shape, FIG. 6B is a partial perspective view in which the shape of the holding portion is different, and FIG. 6C is a partial perspective view in still another shape. FIG.
7A is a sectional view of a socket body, FIG. 7B is a rear view of the socket body, and FIG. 7C is a top view of the socket cover.
FIG. 8 is an exploded perspective view of the lamp socket.
9A and 9B show a push-up member, where FIG. 9A is a plan view and FIG. 9B is a side view.
10A and 10B show a third embodiment, in which FIG. 10A is a rear view of a socket body, and FIG. 10B is a front view of a socket cover.
11A is a cross-sectional view of a socket body, and FIG. 11B is a cross-sectional view of a socket cover.
FIG. 12 is a sectional view of the socket body with the lamp mounted.
FIGS. 13A and 13B are cross-sectional views of a two-wire lamp socket before mounting the lamp, and FIG. 13B a cross-sectional view after mounting the lamp.
14A is a cross-sectional view before mounting the lamp, and FIG. 14B is a cross-sectional view after mounting the lamp.
FIGS. 15A and 15B show a fourth embodiment, where FIG. 15A is a cross-sectional view before mounting a lamp, and FIG. 15B is a cross-sectional view after mounting the lamp.
FIGS. 16A and 16B show another embodiment, in which FIG. 16A is a cross-sectional view before mounting the lamp, and FIG. 16B is a cross-sectional view after mounting the lamp.
FIG. 17 is a schematic cross-sectional view of a fifth embodiment.
18A and 18B show a sixth embodiment, where FIG. 18A is a cross-sectional view before mounting a lamp, and FIG. 18B is a cross-sectional view after mounting the lamp.
FIG. 19 is a partially omitted perspective view of the seventh embodiment.
FIG. 20 is a partially enlarged perspective view thereof.
FIG. 21 is an operation explanatory view for explaining the engagement / disengagement operation of the engagement pin.
FIG. 22 is a rear view illustrating the routing of the high-voltage line of the socket body according to another embodiment.
FIG. 23 is an exploded perspective view of a conventional lamp and lamp socket.
FIG. 24 is an explanatory diagram of a locking operation between the engagement pin and the locking part.
[Explanation of symbols]
1 Socket body
2 Center electrode
3 Outer electrode
4 outer electrode
5 Push-up member
6 Elastic body
7 Locking part
8 Socket body
9 Socket cover
10 Socket opening
11 Center tube
12 Engagement part
14 Longitudinal groove
20 Horizontal groove
47 Lamp cap

Claims (1)

Said socket has a central cylindrical portion at the center of further have a locking portion for locking the engaging portion and the socket opening and having a socket opening for fitting the lamp cap having an engaging portion on the outer peripheral surface A socket body having a sliding groove extending in the axial direction on the inner peripheral surface of the opening; a central electrode housed in the central tube portion of the socket body and contacting the central electrode portion of the lamp base; and the socket body An outer electrode that is in contact with an outer electrode portion of the lamp base, and is inserted into the outer side of the central tube portion of the socket body, and the lamp base is fitted to the socket body in a state of being fitted to the socket body. A push-up member that abuts, and an elastic body that is fitted on the outer side of the central tube portion of the socket body and presses the push-up member in a direction in which the lamp base is removed ,
The push-up member has a protrusion on the outer periphery thereof that slidably engages with the sliding groove of the socket body, and an entrance through which the protrusion can engage with the sliding groove from the front side of the socket body Lamp socket formed in the sliding groove .

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