JP3543568B2 - Lamp having two or more bulbs and method of attaching bulb to lamp - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lamp mounted on an automobile or the like by providing two or more light-emitting bulbs and a method of mounting the bulb to the lamp.
[0002]
[Prior art]
A plurality of lamps such as a fog lamp, a front signal lamp, and a cornering lamp are mounted on a front side of the vehicle, and a plurality of lamps such as a rear turn signal lamp, a reverse lamp, and a stop / tail lamp are also mounted on a rear side. In addition, the plurality of lamps are unitized, and the unitized lamp is mounted on an automobile, so that the mounting space is reduced, the mounting work is made more efficient and simplified. Such a unitized lamp has a structure in which two or more bulbs are mounted on the lamp housing to perform the function of each lamp.
[0003]
FIG. 7 shows a conventional lamp 1 having two or more bulbs. The front side of the lamp 1 is closed by covering a lens 3 on the front of the lamp housing 2. On the rear surface of the lamp housing 2, a housing portion 5 for housing the bulbs 4 individually is bulged. A valve mounting hole 6 is formed in each of the housings 5. The valve 4 is inserted into the valve mounting hole 6, and the socket 4 a supporting the valve 4 is rotated, so that the valve 4 is inserted into each of the housings 5. It is attached.
[0004]
The bulb 4 emits light when electric power is supplied from a vehicle-mounted battery (not shown), and performs the functions of respective lamps such as a fog lamp and a front signal lamp. In order to supply the electric power, a covered electric wire (hereinafter, referred to as an electric wire) 7 is routed on the rear side of the lamp housing 2, and each electric wire 7 is connected to the bulb 4. Reference numeral 8 denotes a connector for connecting a main harness (not shown) from the battery to the electric wire 7.
[0005]
FIG. 8 shows a terminal portion of each electric wire 7, and by removing a covering portion 7 a made of a non-conductive synthetic resin film, that is, by peeling the so-called skin, a conductive core wire 7 b is exposed, and the core wire 7 b The terminal fitting 9 is crimped to the tip and attached by brazing or the like. Then, the lamp is unitized by press-fitting from the back side of the socket 4a of the bulb 4 corresponding to the terminal fitting 9 and connecting to an electrode (not shown) inside the bulb 4, and then inserting the bulb 4 into the bulb mounting hole 6. It is set to 1.
[0006]
[Problems to be solved by the invention]
In the conventional lamp 1 described above, when the electric wires 7 are connected to each of the two or more bulbs 4 attached to the lamp housing 2, the long electric wires 7 are cut into appropriate lengths for respective circuits, and the electric wires 7 are cut. An operation of peeling the covering portion 7a and attaching the terminal metal 9 to the core wire 7b, an operation of attaching the terminal metal 9 to the corresponding bulb 4, and an operation of attaching the bulb 4 to the lamp housing 2 are required. Many lead times are long.
[0007]
The peeling of the covering 7a of the electric wire 7 and the mounting of the terminal fitting 9 can be performed automatically, but the electric wire 7 with the terminal fitting 9 is bundled or the terminal fitting 9 is inserted into the socket 4a. The work requires a lot of manpower. In addition, there is a possibility that the wiring 7 may be erroneously wired, requiring management man-hours in consideration of the work of repairing the erroneous wiring, and the necessity of cutting the wire 7 to a different length for each circuit. Since the terminal fittings 9 are attached to each of the wires 7 having different lengths, there are many types, and the management of these in-process products is complicated, and improvement is required.
[0008]
The present invention has been made in view of such conventional problems, and has a structure that can simplify the working process, shorten the lead time, and can be automated even when two or more valves are provided. The purpose is to provide. Another object of the present invention is to provide a method of mounting a bulb which can be applied to this lamp.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a lamp according to the first aspect of the present invention includes a lamp housing having a plurality of bulb mounting holes into which bulbs are inserted and mounted, an electrode portion connected to an external electrode of the bulb, and a coated electric wire. A crimping portion that is crimped to the contact, which is attached around the valve mounting hole, and formed in a protruding shape at the crimping portion, and bites into the covered electric wire when crimping the crimping portion. A contact blade that comes into contact with the core wire in the insulating coating portion.
[0010]
The invention according to claim 2 is the invention according to claim 1, wherein the contact blade protrudes from the caulked portion in a ring shape.
[0011]
A third aspect of the present invention is the invention according to the first or second aspect, wherein the caulking portions are provided in a pair along the length direction of the covered electric wire.
[0012]
The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the lamp housing is provided with a contact support projection erected around the bulb mounting hole and a contact holding erected outside the contact support projection. It has a projection, and the contact has an insertion piece inserted into the contact support projection and an insertion leg inserted into the contact holding projection.
[0013]
A fifth aspect of the present invention is the invention according to the fourth aspect, wherein the insertion piece portion and the insertion leg portion each have a locking claw that engages with a contact support projection and a contact holding projection. And
[0014]
The method according to the sixth aspect of the present invention includes a step of mounting a contact around the bulb mounting hole of the lamp housing, and a step of crimping a non-peeled insulated wire into contact with the crimping portion of the contact to crimp the crimping portion. A step of making the formed contact blade bite from the insulating coating portion of the coated electric wire and contacting the core wire in the insulating coating portion.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 6 show a lamp 10 according to an embodiment of the present invention. As shown in FIG. 1, the lamp 10 includes a lamp housing 11, a contact 12, a covered electric wire 13 ((wire harness), hereinafter referred to as an electric wire 13), and a plurality (four in the illustrated embodiment). (See FIG. 3).
[0016]
The lamp housing 11 is formed of an insulating resin so as to have a shape along the outer shape of the vehicle body. On the back surface of the lamp housing 11, a bulb accommodating portion (not shown) is formed in a bulging shape, and a bulb mounting hole 16 is formed in each bulb accommodating portion.
[0017]
Each of the bulb mounting holes 16 is opened at a central portion of a mounting cylinder portion 17 that is stepped higher than the rear surface of the lamp housing 11. The bulb 14 is inserted into the bulb mounting hole 16 so that the bulb 14 is inserted. 14 is mounted on the lamp housing 11. An electrode receiving seat 19 into which an electrode portion 18 of the contact 12 described later is fitted is formed on the outer end surface of the mounting cylinder portion 17 so as to be stepwise lower.
[0018]
In this embodiment, two contacts 12 serving as a positive pole and a negative pole are connected to one valve 14 from the left and right. For this reason, an electrode receiving seat 19, a contact support protrusion 21 described later, and a contact holding member are provided. The protrusions 20 are provided according to the number of contacts 12 to be connected.
[0019]
The contact support protrusion 21 and the contact holding protrusion 20 are provided upright around the valve mounting hole 16, that is, around the mounting cylinder 17.
[0020]
The contact support protrusions 21 are a pair of members standing upright in parallel, and two sets are arranged around the mounting cylinder 17. Each of the contact support projections 21 has a contact press-fit groove 23 at both ends in the width direction, and the insertion piece 25 of the contact 12 is press-fitted into the contact press-fit groove 23.
[0021]
The contact holding projection 20 is provided upright outside the contact support projection 21. The contact holding projection 20 is formed with a contact press-fit hole 22 into which a contact insertion leg 28 is press-fitted, in the length direction thereof.
[0022]
As described above, the insertion piece 25 is press-fitted into the contact support protrusion 21 and the insertion leg 28 is press-fitted into the contact holding protrusion 20 and supported, whereby the contact 12 is supported by the double-sided support structure. Therefore, it is possible to reliably support the contact 12 without deformation.
[0023]
The contact 12 is formed by stamping and pressing a conductive metal plate. As shown in FIG. 2, the contact 12 integrally includes an electrode portion 18, a crimping portion 24, an insertion piece portion 25, and an insertion leg portion 28.
[0024]
The electrode portion 18 is formed by being bent horizontally from the lower end of the insertion piece 25. The electrode portion 18 is in contact with an external electrode 26 of the bulb 14 described later in a state where the electrode portion 18 is fitted into the electrode receiving seat 19 of the mounting cylinder portion 17, thereby conducting the contact 12 and the bulb 14.
[0025]
The upper end of the insertion piece 25 is bent horizontally, and the bending connects the connecting piece 29 continuously. Then, the insertion leg 28 is formed by bending the other end of the connecting piece 29 downward. As described above, the insertion piece 25 and the insertion leg 28 are pressed into the contact support projection 21 and the contact holding projection 20.
[0026]
The caulking part 24 is formed by extending both sides of the connecting part 29 in the left-right direction, and bending the extending part upward. As a result, each of the crimping portions 24 has a U-shape that is open upward, and the electric wires 13 are fixed by caulking while the electric wires 13 are placed inside thereof.
[0027]
In this embodiment, a contact blade 35 is formed on each caulking portion 24. The contact blade 35 is formed by press-punching the bottom surface 36 of the caulked portion 24, and the contact blade 35 projects stepwise higher than the bottom surface 36 by this punching. When the electric wire 13 is caulked by the caulking portion 24, the contact blade 35 forcibly bites into the electric wire 13 and comes into contact with the core wire 27 in the insulating covering portion 34. This contact allows the contact 12 and the electric wire 13 to conduct.
[0028]
In this embodiment, the contact blade 35 projects in a ring shape from the bottom surface 36 of the caulked portion 24. The width of the ring-shaped contact blade 35 is ensured by the diameter thereof, and the ring-shaped contact blade 35 can reliably bite into the electric wire 13. For this reason, reliable conduction can be performed.
[0029]
Further, in this embodiment, the caulking portions 24 having the contact blades 35 are provided on the left and right sides, and the respective caulking portions 24 are caulked to the electric wire 13, and by this caulking, the respective contact blades 35 are connected to the electric wire 13. With the core wire 27 of For this reason, while being able to join with the electric wire 13 firmly, conduction | electrical_connection with the electric wire 13 can also be performed reliably.
[0030]
Further, locking claws 37, 38, 39 are formed on the contact 12. The locking claws 37 are formed on both sides in the width direction of the insertion piece 25, and are engaged with the inner surface of the contact press-fit groove 23 by pressing the insertion piece 25 into the contact support protrusion 21.
[0031]
The locking claw 38 is formed by cutting and raising a triangular shape in the plane of the insertion leg 28, and the locking claw 39 is formed by cutting and raising both sides in the width direction of the insertion leg 28. I have. These locking claws 38, 39 bite into the inner surface of the contact press-fitting hole 22 by press-fitting the insertion leg 28 into the contact holding protrusion 20, and engage with them.
[0032]
The engagement of the locking claws 37, 38, and 39 with the contact support protrusion 21 and the contact holding protrusion 20 prevents the contact 12 from coming off. Therefore, the contact 12 can be stably attached to the lamp housing 11.
[0033]
As shown in FIG. 3, the bulb 14 includes a bulb main body 30 that emits light by supplying power, and a socket 31 to which the bulb main body 30 is attached. On the outer surface of the socket 31, a hook portion 32 for engaging the inner surface of the bulb mounting hole 16 and fixing the bulb 14 to the lamp housing 11 is formed. Further, the socket 31 is integrally formed with a flange portion 33 abutting on the end face of the mounting cylinder portion 17, and the external electrode 26 is arranged on the flange portion 33.
[0034]
Such a valve 14 is inserted into the valve mounting hole 16 and rotated to fix the hook portion 32 by engaging with the inner surface of the valve mounting hole 16. Due to this fixation, the external electrode 26 comes into contact with the electrode portion 18 of the contact 12 fitted in the electrode receiving seat 19 of the mounting cylinder portion 17, and the bulb 14 and the contact 12 conduct.
[0035]
Next, assembly of this embodiment will be described. First, the contact 12 is attached to the lamp housing 11 as shown in FIG. This attachment is performed by pressing the insertion piece 25 of the contact 12 into the contact support projection 21 of the lamp housing 11 and simultaneously pressing the insertion leg 28 into the contact holding projection 20. Now, in these press fittings, the locking claws 37, 38, and 39 bite into the contact support projections 21 and the contact holding projections 20, so that the contacts 12 can be attached without coming off.
[0036]
After the attachment of the contact 12, the electric wire 13 is pulled out onto the caulked portion 24 of the contact 12 by a robot (not shown) without peeling the electric wire 13. Then, the electric wire 13 is placed on the caulking portion 24 and the electric wire 13 and the contact 12 are coupled by caulking the caulking portion 24.
[0037]
At the same time as the caulking, the contact blade 35 of the caulked portion 24 forcibly bites into the electric wire 13. FIGS. 5 and 6 show this state, in which the contact blade 35 bites into the insulating covering portion 34 of the electric wire 13 by the crimping of the crimping portion 24 and comes into contact with the core wire 27 inside the insulating covering portion 34. And, by this contact, the electric wire 13 and the contact 12 are conducted and connected.
[0038]
After this connection, the bulb 14 is attached to the lamp housing 11. That is, the valve 14 is fixed by inserting the valve 14 into the corresponding valve mounting hole 16 and rotating it. Since the external electrode 26 of the bulb 14 comes into contact with the electrode portion 18 of the contact 12 by this fixing, the bulb 14 and the contact 12 are connected.
[0039]
Since the part 14 formed by the above steps is connected to the electric wire 13 via the contact 12, light can be emitted by power supply from the electric wire 13.
[0040]
In such an assembling, since the electric wire 13 can be provided for connection without peeling, a troublesome step of manually peeling the electric wire 13 and a step of connecting the core wire 27 and the terminal fitting after the manual peeling are performed. Is unnecessary, the assembly can be performed quickly, and the process can be shortened even when two or more valves are mounted.
[0041]
Further, since the electric wire 13 and the valve 14 are separated and assembled, automatic wiring of the electric wire 13 becomes possible, and the lead time can be shortened, and erroneous wiring of the electric wire 13 can be prevented.
[0042]
Furthermore, even if contact occurs between the contact blade 35 of the caulking portion 24 and the core wire 27 of the electric wire 13, the insertion piece portion 25 and the insertion leg portion 28 for fixing to the lamp housing 11 are attached to the caulking portion. 24, the contact does not spread to the insertion piece 25 or the insertion leg 28. For this reason, even if an electric contact is generated, the mounting strength of the contact 12 does not decrease and a stable mounting state can be supported.
[0043]
Further, since it is easy to release the crimping by inserting a tool into the crimping portion 24 after crimping, recycling after disassembly becomes easy.
[0044]
【The invention's effect】
According to the first aspect of the present invention, after the contact is mounted around the valve mounting hole, the contact comes into contact with the caulked portion of the contact and the caulked portion is caulked. By this caulking, the contact blade bites into the insulated wire, comes into contact with the core wire in the insulated coating portion and conducts, and the contact and the insulated wire are connected. Then, since the electrode portion of the contact and the external electrode of the valve are connected by attaching the valve to the bull portion mounting hole, the valve and the covered electric wire are connected via the contact.
[0045]
In this structure, since the bulb and the insulated wire are physically separated, the insulated wire can be routed separately from the valve. For this reason, the wiring of the covered electric wires can be automated, the lead time can be shortened, and incorrect wiring can be prevented.
[0046]
Also, the coated electric wire can be used for connection as it is without peeling. Therefore, since a manual operation of inserting the terminal fitting attached to the electric wire into the socket is not required, the connection can be easily performed, and the number of operators can be reduced.
[0047]
According to the second aspect of the present invention, since the contact blade has a ring shape, there is a width with respect to the covered electric wire, and it is possible to reliably bite into the covered electric wire. Thereby, a stable connection can be performed.
[0048]
According to the third aspect of the present invention, a reliable connection can be performed by caulking the insulated wire against each of the pair of caulking portions.
[0049]
According to the fourth aspect of the present invention, the contact is attached to the lamp housing by inserting the insertion piece into the contact support projection and inserting the insertion leg into the contact holding projection. In this structure, since the contact is supported by both ends, the contact can be firmly supported and stable mounting can be performed.
[0050]
According to the fifth aspect of the present invention, since the locking claw is engaged with the contact support projection and the contact holding projection, the contact can be prevented from coming off, and the contact can be stably attached to the lamp housing.
[0051]
According to the invention of claim 6, by crimping the crimped portion to the insulated wire that has not been peeled, the contact blade can be cut into the insulated wire and contact the inner core wire. For this reason, it is not necessary to remove the troublesome peeling and to attach the terminal fittings after the peeling, so that the process can be simplified and the assembling can be performed quickly.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of one embodiment of the present invention.
FIG. 2 is a perspective view of a contact.
FIG. 3 is a perspective view of a valve.
FIG. 4 is a perspective view showing a state where a caulking portion is caulked.
FIG. 5 is a sectional view taken along line AA of FIG. 4;
FIG. 6 is a sectional view taken along line BB of FIG. 4;
FIG. 7 is an exploded perspective view of a conventional lamp.
FIG. 8 is a perspective view showing a terminal portion of a conventional electric wire.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Lamp 11 Lamp housing 12 Contact 13 Electric wire 14 Valve 16 Valve mounting hole 18 Electrode part 20 Contact holding projection 21 Contact support projection 24 Caulking part 25 Insertion piece part 26 External electrode 27 Core wire 28 Insertion leg part 34 Insulation coating part 37 38 39 Locking claw

Claims (6)

A lamp housing in which a plurality of bulb mounting holes into which the bulbs are inserted and mounted are formed,
An electrode portion connected to the external electrode of the bulb and a crimped portion crimped to the covered electric wire, and a contact attached around the bulb mounting hole,
A contact blade that is formed in a protruding shape at the crimping portion and that bites into the covered electric wire when the crimping portion is crimped and comes into contact with a core wire in the insulating coating portion. A lamp having a bulb. A lamp having two or more bulbs according to claim 1,
The lamp having two or more bulbs, wherein the contact blade protrudes in a ring shape from the caulked portion. A lamp having two or more bulbs according to claim 1 or 2,
A lamp having two or more bulbs, wherein the caulking part is provided in a pair along the length direction of the covered electric wire. A lamp having two or more bulbs according to claim 1,
The lamp housing has a contact support protrusion erected around the bulb mounting hole and a contact holding protrusion erected outside the contact support protrusion. The contact is an insertion piece inserted into the contact support protrusion and a contact. A lamp having two or more bulbs, wherein the lamp has an insertion leg inserted into the holding projection. A lamp having two or more bulbs according to claim 4,
The lamp having two or more bulbs, wherein the insertion piece and the insertion leg each have a locking claw that engages with a contact support projection and a contact holding projection. Attaching a contact around the bulb mounting hole of the lamp housing;
By crimping the uncovered insulated wire in contact with the swaged portion of the contact, the contact blade formed in the swaged portion is bitten from the insulated sheath of the insulated wire and the core wire in the insulated sheath is removed. Contacting the bulb with the lamp.

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