JPH0357031Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The lamp socket device of the present invention is used for vehicle instruments, etc., especially lighting for motorcycle instruments that are exposed to the external atmosphere and used in a vibrating atmosphere. Or, it relates to an improvement in the mounting device on the housing side of a lamp socket device that can maintain good contact pressure between the flexible printed wiring board on the housing side of the lamp lighting device and the terminals on the lamp socket side for displaying warnings on vehicle gauges, etc. .

[Related technologies and their problems]

In general, instruments for vehicles such as motorcycles include instruments that indicate the driving status of the vehicle, such as a speedometer equipped with a speed warning device, an engine tachometer, a fuel gauge, and a temperature gauge, as well as the hydraulic status of the engine oil and the neutral of the transmission gear. A central warning device that centrally displays various conditions such as the position display and the upward lighting status of the headlight, and lamps for night illumination of each of the above instruments are installed, and the electrical components and wires of these instruments are installed. A flexible printed wiring board is used as an electrical cord to connect to the harness.

When electrically connecting such lighting lamps or indicator lamps of central warning devices to the above-mentioned flexible printed wiring board, a wedge-based lamp socket device is generally used. 58-68054, by inserting the locking protrusion of the lamp socket along the notch of the mounting hole formed on the housing side, and then rotating the lamp socket in one direction so that the locking protrusion is attached to the housing. The lamp socket is held securely on the inner surface of the housing, and the lamp socket can be attached to the housing while the contact piece formed on the terminal of the lamp is pressed into contact with the conductive part of the conductive tongue piece of the flexible printed wiring board.

Therefore, by rotating the lamp socket in one direction, the locking protrusion presses against the inner surface of the housing, and the conductive portion of the flexible printed wiring board and the contact piece of the lamp socket come into contact and are electrically connected.

However, in this case, the lamp socket formed in the mounting hole of the housing is rotated in one direction, and a flexible printed wiring board is attached to a mounting wall portion formed with a constant diameter to maintain conduction between the contact piece and the conductive tongue piece. The lamp socket is inserted into the mounting hole with a pair of drawn conductive tongues protruding from the lamp socket, and rotated in one direction to mount the lamp socket in the housing.
This insertion operation involves inserting the lamp socket into the mounting hole, bending the conductive tongue so that it contacts the mounting wall, and then rotating the lamp socket within the mounting wall, which is formed with a constant diameter in one direction. At times, the rotary insertion operation is performed while the contact pressure between the conductive tongue and the terminal of the lamp socket is strong, so there is a risk that workability may be slow when assembling and fixing the lamp socket to the housing.

Further, due to the contact pressure generated during the rotational operation, a tensile force tends to constantly act on the bent portion of the conductive tongue, and there is a risk that stress will be applied to the conductive tongue and damage it.

[Purpose of invention]

The purpose of this invention is to improve the workability when installing the lamp socket by rotating it in one direction in the mounting hole formed in the housing, to prevent the connecting tongue from being damaged or deformed, and to prevent the connecting tongue from being damaged or deformed. It is designed to maintain good contact between the terminal and the terminal.

[Summary of the idea]

The present invention is a wedge-based lamp socket mounting device used for instruments for vehicles such as motorcycles, in which a mounting hole for mounting a lamp socket is formed in a housing, a flexible printed wiring board is arranged along the housing, and a flexible printed wiring board is installed in the mounting hole. A pair of conductive tongues drawn and formed from a flexible printed wiring board are formed by protruding from the lamp socket, and a pair of terminals electrically connected to the thin lead wires of the wedge base lamp are included in the lamp socket. The lamp socket is inserted into the mounting hole, the lamp socket is mounted on the housing by rotating in one direction, and the contact piece of the lamp socket is pressed against the conductive tongue piece within the mounting hole. In the lamp socket mounting device which is electrically conductive, the mounting hole forms a guide wall portion into which a pair of contact pieces provided on the lamp socket are inserted, and the lamp socket is rotated in one direction to connect the contact pieces and the above-mentioned contact pieces. By forming a mounting wall to maintain electrical continuity with the conductive tongue and setting the inner diameter of the guide wall to be larger than the inner diameter of the mounting wall, the lamp socket can be fixed in the mounting hole formed in the housing. When the lamp socket is installed by rotating in the direction, the pair of terminals of the lamp socket are guided by the guide wall, and the bent portion of the connecting tongue is also located within the guide wall, which allows the lamp socket to be inserted into the mounting hole. When the lamp socket is inserted, the contact pressure is suppressed as much as possible, and the lamp socket rotates in one direction. After the lamp socket is assembled and fixed, the contact pressure between the terminal part of the lamp socket and the conductive part of the flexible printed wiring board is set to the specified state, and the power is turned on. It is designed to keep it in good condition.

[Example of idea]

Figures 1 to 3 show a first embodiment of the present invention, in which a speedometer, an engine tachometer, a fuel gauge, a temperature gauge, etc. (not shown) are installed in an instrument housing 1 of a motorcycle or the like to monitor the driving status of the vehicle. In addition to displaying the stored values of the indicating instruments, the engine oil pressure is detected,
It is equipped with a central warning device that centrally displays various vehicle conditions, such as displaying the neutral position of the transmission gear and upward lighting of the headlights.

Further, a flexible printed wiring board 2 is arranged on the back side of the instrument housing 1 along the instrument housing 1, and the flexible printed wiring board 2 has a wedge base lamp socket 3 used as instrument lighting or display lighting, and an electrical connection. A conductive circuit pattern 5 is formed by connecting the conductive portion 4 to the conductive portion 4 via a coupler with an electric cable wired from a battery (not shown).

The instrument housing 1 has a mounting hole 6 formed at a suitable location for mounting and fixing a wedge base lamp socket 3 used for instrument lighting and display lighting, and a notch is formed at a suitable location on the circumference continuous with the mounting hole 6. 7 is formed, and a pair of conductive tongues 8 of the flexible printed wiring board 2 are formed in the mounting hole 6 to protrude.

A pair of arc-shaped cylinder parts 10 into which wedge base lamps 9 are inserted are formed in the lamp socket 3 and project upwardly with a gap in between. A locking protrusion 11 that engages with the portion 7 is provided.

Further, a pair of conductive terminals 14 having extending clamping pieces 13 that electrically contact the thin lead wires 12 of the wedge base lamp 9 are housed in the lamp socket 3. It is arranged in the gap between the cylindrical parts 10.

A contact piece 15 is formed at the upper end of the conductive terminal 14 to make contact with the conductive portion 4 of the conductive tongue piece 8 of the flexible printed wiring board 2 for electrical connection.

A guide wall portion 16 is formed in the mounting hole 6 into which a pair of contact pieces 15 provided on the lamp socket 3 are inserted, and the lamp socket 3 is rotated in one direction to connect the contact piece 15 and the conductive tongue piece 8. A mounting wall portion 17 is formed to maintain conductivity.
The inner diameter dimension A of the guide wall portion 16 is the same as that of the mounting wall portion 1.
It is set larger than the inner diameter dimension B of No.7. In addition,
18 is Patsukin.

Then, insert the wedge base lamp 9 into the lamp socket 3, and connect the thin lead wire 12 of the lamp 9.
After holding the lamp in contact with the conductive terminal 14, insert the locking protrusion 11 of the lamp socket 3 along the notch 7 of the mounting hole 6 formed in the instrument housing 1, and then rotate the lamp socket 3 in one direction. At the mounting wall portion 17, the contact piece 15 of the conductive terminal 14 presses against the conductive tongue piece 8 to become energized.

In this case, the lamp socket 3 is attached to the housing 1 by rotating in one direction, and when the lamp socket 3 is inserted into the mounting hole 6, the contact piece 15 of the terminal 14 is attached to the guide wall 16 of the mounting hole 6.
Since the contact pressure on the lamp socket 3 is suppressed as much as possible, the specified contact pressure can be obtained after the rotation operation starts in one direction, which improves work efficiency.

Furthermore, the bent portion 8a of the conductive tongue piece 8 is also guided within the guide wall portion 16, thereby preventing damage or deformation due to the tensile force generated in the bent portion 8a during rotation in one direction. Flexible printed wiring board 2 and lamp socket 3
It is possible to maintain a good electrical conduction state with the terminal 14 of the terminal 14.

In the above embodiment, the guide wall portion 16 is provided in an arc shape, but it may be formed in a straight line as shown in FIG. 4. Furthermore, as shown in FIG. The wall portion 17 is a tapered continuous wall portion 19.
It may be formed into

[Effect of idea]

As described above, the present invention includes forming a mounting hole for attaching a lamp socket in a housing, disposing a flexible printed wiring board along the housing, and forming a pair of conductive wires formed by routing the flexible printed wiring board into the mounting hole. The lamp socket has a pair of terminals electrically connected to the thin lead wire of the wedge base lamp, and each terminal has a contact piece electrically connected to the conductive tongue. In a lamp socket mounting device, the lamp socket is inserted into the mounting hole and rotated in one direction to mount the lamp socket in the housing, and the contact piece of the lamp socket is pressed against the conductive tongue piece in the mounting hole to establish electrical conduction. The mounting hole forms a guide wall portion into which a pair of contact pieces provided on the lamp socket is inserted, and a mounting hole for rotating the lamp socket in one direction to maintain continuity between the contact piece and the conductive tongue piece. By forming a wall and setting the inner diameter of the guide wall to be larger than the inner diameter of the mounting wall, the contact piece can be easily inserted through the guide wall when inserting the lamp socket into the mounting hole. In the case of mounting by rotating in one direction, at least the specified contact pressure can be obtained by the mounting wall when the assembly is completed by rotation, so the workability of mounting to the housing can be improved.
Since the area affected by the tensile force of the conductive tongue is guided by the guide wall, it is possible to prevent the conductive tongue from being damaged, displaced, or deformed even during rotational movement.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the first embodiment, Fig. 2 is a plan view of the mounting holes, Fig. 3 is a sectional view showing the assembled state, Fig. 4 is a plan view showing the second embodiment, Fig. 5 FIG. 3 is a plan view showing a third embodiment. DESCRIPTION OF SYMBOLS 1... Instrument housing, 2... Flexible printed wiring board, 3... Lamp socket, 6... Mounting hole, 8... Conductive tongue piece, 9... Wedge base lamp, 11... Locking protrusion, 14... Conductive terminal, 15... Contact piece, 16... Guide wall, 17...
...Mounting wall part, A, B...inner diameter.

Claims (1)

[Scope of utility model registration request] A mounting hole is formed in the housing for attaching the lamp socket, a flexible printed wiring board is arranged along the housing, and a pair of conductive tongues formed by being routed from the flexible printed wiring board are protruded into the mounting hole. A pair of terminals electrically connected to the thin lead wire of the wedge base lamp is contained in the lamp socket, a contact piece is formed on each terminal to electrically connect with the conductive tongue piece, and the lamp socket is inserted into the mounting hole. , a lamp socket mounting device which rotates in one direction to mount the lamp socket in the housing, and presses the contact piece of the lamp socket against the conductive tongue piece in the mounting hole to establish electrical continuity; A guide wall portion is formed into which the provided pair of contact pieces are inserted, and a mounting wall portion is formed for rotating the lamp socket in one direction to maintain conduction between the contact pieces and the conductive tongue piece. A lamp socket mounting device characterized in that the inner diameter of the wall is set larger than the inner diameter of the mounting wall.