JPS60169018A - Cigarette lighter - Google Patents

Abstract

PURPOSE:To prevent a cigarette lighter from being heated even if the cigarette lighter is abutted against a rear seat when a front seat is inclined rearward by a method wherein the heater is heated by rotating a knob of a main body of the cigarette lighter. CONSTITUTION:A heater 36 is heated by rotating a knob 31 of a main body 30 of a cigarette lighter not by pushing it. In case that the main body 30 of the cigarette lighter is arranged at the rear surface of a seat back of a front seat, an electric circuit for the heater 36 is not completed even if the knob 31 of the main body 30 of the cigarette lighter is abutted against the end part of the seat when the seat is inclined rearward. With this arrangement, the heater is not heated erroneously.

Description

Detailed Description of the Invention (a) Technical Field The present invention provides a cigarette lighter that does not heat up even if the cigarette lighter hits the rear seat when the front seat, which is equipped with a cigarette lighter on the back of the seatback, is reclined backwards. 〇 (b) Conventional technology RE regarding lighters: In both cars, there is a cigarette lighter on the instrument panel. *GI cars also have a cigarette lighter on the back of the front seat back for convenient smoking. When the knob of a cigarette lighter is pushed in, a heater inside the cigarette lighter is heated to a predetermined temperature, and then the cigarette lighter automatically returns to its original position. Figure 1 shows the structure of a conventional cigarette lighter. In the figure, 1 is a cigarette lighter body, 2 is a Vi knob, 3 is a metal tube around which a spring 4 is wound, and 5 is a metal tube 3.
The heater is wound in a thin spiral as shown in FIG. 2 around a shaft 6 extending downward from the center of the bottom surface of the heater.

A heater housing 7 is attached to the bottom surface of the metal cylinder 3 through an insulator 8, and is housed in a lid case 9 that includes the cigarette lighter body. Reference numeral 10 denotes an inner case into which the cigarette lighter main body 1 is pushed, and a bimetal 12 is attached to the bottom surface of the inner case through an insulator 112. In addition, the inner case 10 and the surrounding outer case 13
is fixed by attaching it to a plate (insulator) 15 with a nut 14. 16Vi is a temperature fuse to ensure safety during overheating, and is connected between the bimetal 12 and the terminal 17.

The terminal 17 is attached to the insulator 11 via an insulator 18, and a battery 19 is connected between the terminal 17 and the outer case 13.

Now, when the key switch (not shown) is set to the accessory position and the knob 2 of the cigarette lighter body 1 is pushed in, the heater housing 7 engages with the bimetal 12 as shown by the chain line. As a result, from the battery 19 to the terminal 17, to the temperature fuse 16, to the bimetal 12, to the heater housing 7.
Since a 11L air circuit is formed which leads to the battery 19 via the heater 5, shaft 6, gold N tube 3, spring 4, case 9, inner case 10, nut 14, and outer case 13, the heater 5 heats. Thereafter, when the temperature of the heater 5 reaches a predetermined temperature, the bimetal 12 opens, and the spring spring 4, which had been compressed by the protrusion 9a of the case 9, stretches and the cigarette lighter body 1
returns to its original position. The borrowing of such a cigarette lighter is found in Japanese Utility Model Application Publication No. 162773/1983.

By the way, in luxury cars, the cigarette lighter is installed not only on the instrument panel but also on the seatbacks of the front seats.
However, in such vehicles, when the front seat 20 is tilted backwards as shown by the chain line in FIG. There is a problem in that the heater 20 is energized and heated if it is pushed in against the heater 20.

(c) Object and structure of the invention The present invention has been made in view of the above-mentioned points, and provides a front seat P with a cigarette lighter provided on the back of the seat back. The purpose is to prevent heating, and for that purpose, it has a knob on one end and is attached to a shaft part that can be rotated relative to the inner case fixed to a plate and can be inserted and removed in the axial direction.When the knob is rotated in one direction. A spiral spring that generates a return force is fixed, a heater that is energized when the shaft is rotated to a predetermined position is fixed to the other end of the shaft, and the shaft is turned on when the knob is rotated in the one direction. A locking member is provided that locks at the predetermined position but displaces and releases the shaft when the heater reaches a predetermined humidity, and when the shaft is unlocked. The entire shaft portion is configured to return from the predetermined position to its original position by the return force of the spiral spring.

) Example The present invention will be explained below based on the drawings.

FIG. 4 shows a drawing of an embodiment of the cigarette lighter according to the present invention, where 3o is the cigarette lighter body, 31 is the knob, and 3o is the cigarette lighter body;
2 is a spring wound in a thin spiral around a shaft 330 as shown in FIG. 5, and 34 is a spring housing.

One end of the spring housing 34 is connected to the other end of the spring 32 fixed to the shaft 33, and the spring housing 34 is attached to the shaft 33 so that it can rotate freely. It is supported by a restraining capital 41a of the inner case 41, which is made to match the shape of the spring housing 34 so as to prevent it from happening. 36 is a spirally wound heater as shown in FIGS. 6 and 7, one end of which is connected to the tip of the shaft 33.
g, and the other end is attached to a heater housing 37 (see FIG. 7), and the heater housing 37 is attached to the shaft 33 via an insulator 38. 3
Insert through 9Fi insulator 40 - bottom 4 of case 41
A case 1b is fixedly provided, 42 is a bimetal attached to the inside of the case 39 via a conductor 43,
The outer case is attached to a plate 46 by tightening a 44tri nut 45 to the inner case 41. 47 is a temperature fuse connected between the case 39 and the terminal 48 through the opening l in the bottom 41b of the inner case 41;
A battery 49 is connected between the two.

When using the above cigarette lighter, please use the key switch (
When the knob 31 of the cigarette lighter body 30 is turned to the position shown by the chain line as shown in FIG. As shown by chain lines in the figure, the protrusion 37a of the heater housing 37 and the four parts 42 of the bimetal 42
a is engaged. As a result, from battery 49 to terminal 4
8, temperature fuse 47, case 39, conductor 43, metal 42, heater housing 37, heater 36, shaft 33, spring 32, spring housing 34
An electric circuit is formed that connects to the battery 49 via the holding portion 41a1 of the inner case 41, the nut 45, and the outer case 44, and the heater 36 generates heat. After that, when the temperature of the heater 36 reaches a predetermined temperature, the bimetal 42 opens at that point.
2, the cigarette lighter body 30 returns to its original position due to the return flap J of the spring 32, which had been contracted until then.

In this way, the heater 36 is heated by turning the cigarette lighter body 30 instead of pushing the knob 31 minutes, so the cigarette lighter body 30 is installed on the back 1rIi of the seat back of the front seat (see Figure 3). If the cigarette lighter body 30 is
Even if the knob 31 hits the edge of the rear seat, an electric circuit to the heater 36 will not be formed, so the heater 36 will not heat up accidentally.

In this embodiment, when the knob of the cigarette lighter rotates to a predetermined position, the heater is energized through the bimetal, but in the present invention, the heater is connected in advance to an external power supply circuit without energizing through the bimetal. Provide a contact point that is
When all the knobs are rotated to a predetermined position and locked, the heater comes into contact with this contact point, heats the heater, and the bimetal is sensed by the bimetal placed close to the heater, which displaces the knob. The lock may be released.

(E) As described in detail, the present invention has a knob at one end and is rotatable with respect to an inner case fixed to a plate, and the knob is mounted in one direction on a shaft part that can be inserted and removed in the axial direction. A thinly wound spring that generates a return force when rotated to a certain position is fixed, a heater that is energized when the shaft is rotated to a predetermined position is fixed to the other end of the shaft, and when the knob is rotated in the one direction, a heater is fixed to the other end of the shaft. The shaft portion is locked at the predetermined position, and a locking member is provided that displaces and releases the locking of the shaft portion when the ntJ heater reaches a predetermined temperature, so that the shaft portion is locked. When released, the return force of the spiral spring causes the shaft portion to return from the predetermined position to the original position;
If the cigarette lighter made in this way is installed on the back of the seatback of the front seat, even if the cigarette lighter hits the rear seat when the front seat is folded back, the shaft will not rotate, so the heater will not There is no chance of the heater accidentally heating up due to no electricity being applied. Further, since the cigarette lighter according to the present invention does not have a push-in structure, the axial depth dimension of one cigarette lighter body can be made shorter than that of conventional ones.

[Brief explanation of drawings]

Figure 1 is a sectional view of a conventional cigarette lighter, Figure 2 is a perspective view of a conventional cigarette lighter, and Figure 3 is a cross-sectional view of a conventional cigarette lighter. A diagram showing how the cigarette lighter hits the rear seat when the seat is tilted backwards, FIG. 4 is a sectional view of one embodiment of the cigarette lighter according to the present invention, and FIG.
The AA sectional view of the cigarette lighter shown in the figure, Figure 6 is the 4th sectional view.
FIG. 7 is a perspective view of the main body of the cigarette lighter shown in the figure, FIG. 7 is a B-B front view of the cigarette lighter shown in FIG. 4, and FIG. It is. 1.30- Cigarette lighter body, 2.31 Knob, 5.36- Heater, 6.33 Shaft, 7
゜37... Heater housing, 10.41... Inner case, 12.42... Bimetal, 13.44
...Outer case, 14.45...Natsuto, 16
゜47...Temperature fuse, 17.48...Terminal, -
32...Spring, 20...Front seat, 2
1...Rear seat, 15.46...Installation is on board 19
Patent applicant: Nissan Motor Co., Ltd. Attorney Hiroo Tsuchi Suzuki Figure 1 Figure 3

Claims (1)

[Claims] The shaft has a knob on one end and is fixed to a plate, and has a shaft that can be rotated 0j and can be inserted and removed in the axial direction.The shaft is fixed at one end to the shaft, and when the knob is rotated in one direction, a return force is generated. A spiral spring is fixed to the other end of the shaft and when the shaft is rotated at a predetermined position 1, Jl
o A heater that slides, and (ii) a heater that locks the shaft when the shaft is rotated to the predetermined position, and a heater that displaces and locks the shaft when the heater reaches a predetermined temperature. and a locking means for releasing the lock, and when the lock of the shaft portion is released, the return force of the spiral spring tstl
11. A cigarette lighter characterized in that the shank portion is returned to its original position from a predetermined position 1u in OiJ.