JPS6226698Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cigarette lighter, particularly an electric cigarette lighter for automobiles.

This type of cigarette lighter has a plug body that has a knob and a cup-shaped seat plate at one end and a heater case at the other end, and is slidably supported within the small diameter part of the sleeve. a plug portion in which a coil spring is compressed between a seat portion formed at the boundary and a cup-shaped seat plate, and a large diameter portion of the sleeve is slidably inserted into the assembly guard;
It is common to have a socket with a bimetal finger inside the socket that holds the heater case when the plug is pushed in and opens the heater case when the heater element becomes red hot. When released, the plug body and knob of the plug section are designed to protrude a certain amount from the socket section due to the repulsive force of the coil spring. However, in conventional cigarette lighters, the protruding stroke of the knob is relatively small, and depending on the shape of the panel, it may be difficult to pull out the cigarette lighter, so there was a problem that the mounting position and panel shape were restricted. .

The present invention was developed with the aim of providing a cigarette lighter with a large protruding stroke of the knob.The present invention was developed with the aim of providing a cigarette lighter with a large protruding stroke of the knob. A locking step is formed on the inside and at the tip of the assembly guard, which comes into contact with the locking protrusion of the socket that protrudes radially inward, so that when the heater element is released when the heater element becomes red hot, the repulsive force of the coil spring is removed. Accordingly, the attachment guard and the knob of the plug part are configured to be able to protrude to a position where the heater case comes into contact with the protrusion of the attachment guard and the locking step of the attachment guard comes into contact with the locking protrusion of the socket. . In other words, in the present invention, since the assembly guard is able to protrude from the socket, the first stroke until the heater case abuts the protrusion of the assembly guard, and the movement of the assembly guard together with the heater case and plug body. The plug body, and thus the knob, can be ejected by a stroke corresponding to the sum of the second strokes until the locking stepped portion of the assembly guard comes into contact with the locking protrusion of the socket. Since it can be made larger, there are fewer restrictions on the mounting position and panel shape, making it possible to obtain a cigarette lighter whose plug portion can be easily pulled out.

Hereinafter, the present invention will be specifically explained with reference to the illustrated embodiments.

First, the overall structure will be explained with reference to FIG. FIG. 1 shows a standby state in which the plug part A is inserted into the socket part B but is not in use.

Reference numeral 16 denotes a socket which is inserted into a mounting hole 27 formed in the panel 26 from the right side in the figure, and a collar 28 formed on the outer periphery of the outer end is engaged with the outer surface of the peripheral wall of the mounting hole 27 of the panel 26. A fixing sleeve 25 is fitted onto the outer periphery of the socket 16 from the opposite direction, and a screw 31 formed at the inner end of the fixing sleeve 25 is screwed into a screw 30 formed at the inner end of the side wall 29 of the socket 16. By pressing the outer end of the fixing sleeve 25 against the inner surface around the mounting hole 27 of the panel 26, the socket part B is attached to the panel 26.
installed on.

A terminal screw 22 is passed through the bottom wall 32 of the socket 16 from inside to outside.
On the outer periphery of the socket 16, an insulating member 19, a bimetal finger 17, and a washer 1 are installed inside the socket 16.
8, and on the outside of the socket 16, the insulating member 20, the spring washer 21, and the terminal 24 are fixed to the tightening nuts 23, which are fitted in order, and these members are tightened by tightening the tightening nuts 23. the bottom wall 32 of the socket 16
It is integrally fixed to. Note that the insulating member 19,
20, the terminal screw 22 and the socket 16 are insulated.

6 is a plug body, and a knob 1 is fixed to the outer end of the plug body. This fixation is achieved by screwing the threaded portion 2 of the knob 1 into a nut 3 fixed to the plug body 6. Plug body 6
A heater case 13 containing a spiral heater element 12 is fitted onto the outside of the bottom wall 34 of the heater case 13 by means of a heater rivet 9. Heater element 1
The outer end of 2 is fixed to the heater case 13 by welding, and the center end is fixed to one end of the heater rivet 9 by welding. An insulating member 7 is fitted and fixed to the outer periphery of a heater rivet 9 between the heater case 13 and the bottom wall 34 of the plug body 6. They are insulated from each other by insulating members 10 and 11 provided therein.

A sleeve 14 is fitted around the outer periphery of the plug body 6. This sleeve 14 has a guiding function to slidably support the plug body 6 and a spring seat function for the coil spring 5.
a and a large diameter part 14b, the inner diameter of the small diameter part 14a is slightly larger than the outer diameter of the plug body 6, and the tip of the small diameter part 14a is connected to the heater case 13.
It is now possible to come into contact with the Also, the large diameter portion 14
The inner diameter of b is sufficiently larger than the outer diameter of the plug body 6, and a coil spring 5 is fitted between the plug body 6 and the coil spring 5. It is compressed between the portion 41 and the cup-shaped seat plate 4 which is fixed to the outer end of the aforementioned nut 3 together with the plug body 6 by caulking. Cup-shaped seat plate 4
The side surface 42 of is in contact with the inner surface of the sleeve 14.

A sleeve-shaped assembly guard 15 is fitted into the outer periphery of the sleeve 14, and a collar 43 is formed on the outer periphery of the outer end of the sleeve 14, and a protrusion 44 is formed radially inward at the middle part of the cylindrical surface. A locking step 48 is formed near the tip of the cylindrical surface. The outer diameter of the attachment guard 15 is such that it can be fitted into the socket 16, and the socket 16 has a locking protrusion 4 on the inside in the radial direction corresponding to the locking step 48.
7 is provided protrudingly. Connect plug part A to socket part B
When pushed in, the flange 43 touches the flange 49 formed on the outer periphery of the sleeve 14 and the flange 28 of the socket 16.
Further, when the plug part A is pulled out from the socket part B, the heater case 13 comes into contact with the protrusion 44, and the flange 43 of the assembly guard 15 is designed to be engaged with the flange 28. Between the position where the locking step 48 engages with the locking protrusion 47, that is, the position where it is pushed in the most, and the position where the locking step 48 abuts the locking protrusion 47, a moderate frictional force is exerted between the locking step 48 and the socket 16. It is slidable.

In addition, terminal 24 and socket 16 are connected to power supply E.
electrically connected to.

The cigarette lighter of this embodiment has the structure described above, and its operation will be explained next.

In the state shown in FIG. 1, when the knob 1 is pushed to the left, the coil spring 5 is compressed, the plug body 6 is guided to the small diameter part 14a of the sleeve 14 and pushed in, and the heater case 13 is turned into a bimetallic material as shown in FIG. Held by fingers 17 and in electrical contact, heater element 12 is connected to power source E.

When the heater element 12 generates heat and the temperature of the heater case 13 increases, the bimetal finger 17 is thermally deformed by the heat, and when the heater element 12 becomes red hot to an appropriate degree, the bimetal finger 17 can no longer hold the heater case 13. When released, the plug body 6, knob 1, heater case, etc. suddenly return to the right direction in the figure due to the repulsive force of the coil spring 5, and the heater case 13 moves to the sleeve 14.
The locking step 48 also contacts the protrusion 44 of the assembly guard 15, and the locking step 48 is pushed to the right by the kinetic energy of the plug body 6, etc., as shown in FIG. It moves to a position where it comes into contact with the locking protrusion 47 of No. 16 and is locked.

The position of the knob 1 at this time is different from the standby state shown in FIG.
The first stroke _S1 until it comes into contact with the protrusion 44 of
The locking step 48 of the attachment guard 15 is at a position where it protrudes by a stroke corresponding to the sum of the second stroke S2 until it comes into contact with the locking protrusion ₄₇ . The cigarette is ignited by pulling it out. Note that if the coil spring 5 is too strong, the plug part A will fall off or bounce back, causing reinsertion. If the coil spring 5 is too weak, the specified stroke will not be obtained, so the coil spring 5
It is desirable to select the most appropriate value for the specifications by considering the mass of movable members such as the knob 1, friction of sliding parts, etc.

FIG. 4 shows a conventional example. In the conventional example, the protrusion 44' of the assembly guard 15' is in contact with the locking protrusion 47 of the socket 16. Atsushi guard 15'
Since the structure is such that it cannot move, only a pop-up stroke corresponding to the first stroke _S1 can be obtained.

As is clear from the above description of the embodiments, in the present invention, the attachment guard can protrude from the socket, and the protrusion stroke of the knob when the heater element becomes red hot can be increased.
There are fewer restrictions on mounting position and panel shape,
This has the advantage of providing a cigarette lighter whose plug part can be easily pulled out.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of the present invention in a standby state, Figs. 2 and 3 are cross-sectional views of the main parts in the same push-in state and protruding state, respectively, and Fig. 4 is a conventional example of the protruding state. FIG. 3 is a cross-sectional view of main parts in a state. A... Plug part, B... Socket part, 1... Knob, 4... Cup-shaped seat plate, 5... Coil spring, 6... Plug body, 12... Heater element, 13... Heater case, 14 ...Sleeve, 14a...Small diameter part, 14b...Large diameter part, 15
...Atsushi Guard, 16...Socket, 17...
...bimetal finger, 41... seat, 44...
... Protrusion, 47 ... Locking protrusion, 48 ... Locking step.

Claims (1)

[Claims for Utility Model Registration] A plug body having a knob and a cup-shaped seat plate at one end and a heater case at the other end is slidably supported within the small diameter portion of the sleeve, and A coil spring is compressed between the seat formed at the boundary and the cup-shaped seat plate, and the large diameter part of the sleeve is slidably inserted into the assembly guard to form a plug part and hold the heater case when the plug part is pushed in. In the case of a cigarette lighter, a socket part is provided with a bimetal finger inside the socket that opens the heater case when the heater element becomes red hot. At the same time, a locking step is formed at the tip of the assembly guard that comes into contact with a locking protrusion of the socket that projects inward in the radial direction, so that when the heater element is released when the heater element becomes red hot, the coil spring rebounds. A cigarette constructed so that the heater case comes into contact with the protrusion of the assembly guard by force, and the assembly guard and knob of the plug part can protrude to a position where the locking step of the assembly guard comes into contact with the locking protrusion of the socket. Writer.