JPS6228064Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is particularly applicable to lamp sockets that are exposed to the external atmosphere and used in a vibrating atmosphere, such as lighting of motorcycle instruments or warning indications of vehicle equipment. This invention relates to an improved structure of the device.

[Prior art]

Generally, motorcycle instruments include a speedometer with a speed warning device, an engine tachometer, or a fuel gauge.
Instruments that indicate the driving status of the vehicle, such as a temperature gauge, a central warning device that centrally displays various vehicle conditions such as the oil pressure status of the engine, the neutral position of the transmission gear, and the upward lighting status of the headlights; Night lighting lamps for each of the above-mentioned instruments are installed, and power is supplied from the vehicle's battery via electric cables to the indicators and illumination lamps for each of the above-mentioned electric instruments and central warning devices. .

At this time, when using a lamp socket device known, for example, from Japanese Utility Model Publication No. 17667/1983, a packing member such as rubber is fitted into the lamp housing, and then the socket and socket holder are fitted and fixed to the packing member. Because
Although it can be a lamp socket device with excellent vibration and water resistance, the wiring of the instruments becomes complicated because each electrical cord is branched from the power supply side of the vehicle and connected to each instrument, central warning device, and lighting lamp. However, there is a drawback that the workability of routing and connecting wires from various electrical components to the above-mentioned battery side via a wire harness is poor.

[Problem that the invention attempts to solve]

In order to avoid this, it is conceivable to change the electrical cord that connects the above-mentioned electrical components of the instruments and the wire harness to a flexible printed wiring board. However, when electrically connecting a lighting lamp or an indicator lamp of a central warning device to the above-mentioned flexible printed wiring board, a wedge-based lamp socket as disclosed in Japanese Utility Model Publication No. 18366/1983 is generally used. However, problems remain in terms of dustproofing and waterproofing, and when exposed to an external atmosphere such as on a motorcycle, rainwater may leak between the terminals of the wedge-based lamp and the conductive part of the flexible printed wiring board. There is a problem in that the ingress of dirt and dust can lead to fatal effects such as electrolytic corrosion or poor conduction.

[Means for solving problems]

This idea solves the above problem, and
A mounting hole for attaching a wedge base type lamp socket is formed in the housing, 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 placed above the mounting hole. The lamp socket is formed to protrude and includes a pair of terminals that are electrically connected to the thin lead wires of the wedge base lamp, and a contact that is electrically connected to the conductive tongue of the flexible printed wiring board is attached to the pair of terminals. The lamp socket is mounted on the housing by inserting the lamp socket into the mounting hole, and the conductive tongue piece is bent into the mounting hole so that the contact piece of the lamp socket is pressed against the conductive tongue piece to establish electrical conduction. In a lamp socket mounting device for a flexible printed wiring board, a flange portion is formed on the outer peripheral portion of the lamp socket body to abut against a flat surface portion of the housing, and an annular packing is disposed below the flange portion, and the annular packing is further provided with an annular packing. A projecting part is formed to support the lower part of the lamp socket, and the lamp socket is installed and fixed in the mounting hole of the housing, and at the same time, an annular packing is compressed between the inner peripheral surface of the mounting hole formed in the housing and the outer peripheral part of the lamp socket main body. It is designed to maintain airtightness between the inner circumferential surface of the mounting hole of the housing and the outer circumferential surface of the lamp socket main body, preventing rainwater and dust from entering from the outside, and connecting the terminal part of the lamp socket with the flexible print. This is designed to maintain good electrical conductivity with the conductive tongue of the wiring board.

〔Example〕

Embodiments of this invention will be described below based on the accompanying drawings.

Figures 1 to 6 show an embodiment of this invention, and there are instruments inside the instrument housing 1 of the motorcycle that indicate the driving status of the vehicle, such as a speedometer, engine tachometer, fuel gauge, and temperature gauge, although they are not shown. Contains the instruments that will be used. Although not shown, a central warning device is incorporated that centrally displays various vehicle conditions such as detecting engine oil pressure, displaying the neutral position of the transmission gear, and lighting up the headlights.

Further, on the back side of the instrument housing 1, a flexible printed wiring board 2 for instrument wiring is attached along the housing 1, and this wiring board 2 has a conductive part 3 that electrically connects to the connection terminal of the instruments, A conductive part 5 is formed to electrically connect to a wedge-based lamp socket 4 used as instrument lighting or display lighting, and a conductive circuit pattern 6 is formed by being routed from each of the conductive parts 3 and 5. It is connected to an electric cable routed from a battery (not shown) via a coupler or the like.

The housing 1 has mounting holes 7 formed in appropriate positions for mounting and fixing the wedge base type lamp sockets 4 used for instrument lighting and display lighting, and a pair of tongue pieces 8 of the conductive portion 5 formed by drawing around the conductive circuit pattern 6 are formed to protrude above each mounting hole 7.

The lamp socket 4 is formed with a cylindrical portion 10 into which a wedge base lamp 9 is inserted, and
A pair of terminals 12 that are electrically connected to the thin lead wires 11 of the wedge base lamp 9 are included, and a contact piece 13 that is electrically connected to the conductive tongue piece 8 of the flexible printed wiring board 2 is included in the pair of terminals 12.
is formed.

Thus, a flange portion 14 is formed on the outer peripheral portion of the main body of the lamp socket 4, and a flange portion 14 that comes into contact with the flat surface portion of the housing 1 is formed, and a projection portion 15 for preventing the lamp socket 4 from coming off is formed on the peripheral surface of the cylindrical portion 10 of the lamp socket 4.
is formed protruding.

Further, an annular packing 16 made of rubber or the like is disposed below the flange portion 14, that is, between the flange portion 14 and the protrusion 15.

Therefore, in the present invention, after inserting the wedge base lamp 9 into the lamp socket 4 and holding the thin lead wire 11 of the lamp 9 in contact with the terminal 12, the lamp socket 4 is inserted into the mounting hole 7 formed in the housing 1.
At the same time, the conductive tongue piece 8 on the flexible printed wiring board 2 side disposed above the mounting hole 7 of the housing 1 is bent along the inner surface of the mounting hole 7, and then the terminal 12 of the lamp socket 4 is inserted.
The contact piece 13 formed in the above is pressed into contact with the conductive tongue piece 8, thereby allowing the lamp socket 4 to be assembled into the housing 1, and at the same time,
Terminal 1 held in contact with thin lead wire 11 of lamp 9
2 side and the conductive circuit pattern 6 of the flexible printed wiring board 2 can be maintained electrically conductive.

Also, at this time, the annular packing 16 attached to the circumferential surface of the cylindrical portion 10 of the lamp socket 4 is attached to the housing 1.
The annular packing 16 is pressed between the inner circumferential surface of the mounting hole 7 and the outer circumferential surface of the cylindrical portion 10, and the space between the mounting hole 7 and the cylindrical portion 10 can be reliably kept sealed by the compressed annular packing 16. This prevents the intrusion of rainwater or dust from the outside of the housing 1, and prevents the contact piece 13 formed on the terminal 12 of the lamp socket 4.
and conductive tongue piece 8 of flexible printed wiring board 2
Furthermore, the lamp socket 4 assembled in the mounting hole 7 of the housing 1 is held by the compressive force of the annular packing 16, and the assembled state can be maintained without being affected by external vibrations. Can be held securely.

Also, when attaching and detaching the lamp socket 4 into the mounting hole 7, especially when removing it, the cylindrical portion 1 of the lamp socket 4
The annular packing 1 is formed by the protrusion 15 formed at 0
6 does not get caught on the side wall portion of the protrusion 15 and fall off, and can be easily attached and removed.

Also, even in a vibrating atmosphere, the annular packing 1
6 to the mounting hole 7 of the housing 1 and the lamp socket 4
By being interposed between the cylindrical portion 10 and the lamp socket 4, it is possible to absorb vibrations applied to the lamp socket 4 side to a certain extent, and it is possible to suppress accidents of disconnection of the filament formed in the lamp 9 as much as possible.
A wedge-based lamp socket device with excellent airtightness can be constructed.

[Effect of idea]

As detailed above, according to the present invention, the flexible printed wiring board improves electrical routing, and the annular packing is supported and held between the flange and the protrusion provided on the lamp socket. This has the effect of being able to maintain dustproof and waterproof properties at the same time as assembly.

[Brief explanation of the drawing]

Fig. 1 is a rear view of an instrument housing showing an embodiment of this invention, Fig. 2 is a cross-sectional view showing the main part of Fig. 1, which is a lamp socket attached to a flexible printed wiring board, and Fig. 3 is a FIG. 1 is a sectional view showing the flexible printed wiring board and housing before the lamp socket is installed, FIG. 4 is a plan view of FIG. 3, FIG. 5 is a plan view showing an embodiment of the lamp socket, and FIG. FIG. 5 is a sectional view of FIG. 5; Housing...1, Flexible printed wiring board...2, Conductive part...3,5, Wedge base lamp socket...4, Conductive circuit pattern...
6, Mounting hole...7, Tongue piece...8, Wedge base lamp...9, Cylinder part...10, Thin lead wire...1
1, Terminal...12, Contact piece...13, Flange part...14, Protrusion...15, Annular packing...1
6.

Claims (1)

[Scope of utility model registration request] A mounting hole for attaching a wedge base type lamp socket is formed in the housing, a flexible printed wiring board is arranged along the housing, and a pair of conductive tongues formed by being drawn from the flexible printed wiring board are protruded onto the mounting hole. a pair of terminals electrically connected to the thin lead wire of the wedge base lamp, a contact piece electrically connected to the conductive tongue piece, and a contact piece electrically connected to the conductive tongue piece; In a lamp socket mounting device for a flexible printed wiring board, the lamp socket is inserted into a mounting hole and mounted on a housing, and a conductive tongue piece is bent into the mounting hole, and a contact piece of the lamp socket is pressed against the conductive tongue piece to establish electrical continuity.
A flange portion that comes into contact with the flat surface of the housing is formed on the outer periphery of the lamp socket body, and an annular packing is disposed below the flange, and a protrusion that supports the bottom of the annular packing is protruded. The flexible printed wiring is characterized in that, at the same time as the lamp socket is installed and fixed in the mounting hole of the housing, an annular packing is compressed between the inner peripheral surface of the mounting hole formed in the housing and the outer peripheral part of the lamp socket main body. Lamp socket mounting device on board.