JP2012051438A - Cigarette lighter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cigarette lighter which prevents interference between an inserted accessory plug and a socket claw at a socket body side, and which is suitable for using the accessory plug.SOLUTION: The cigarette lighter includes: a lighter plug 200 having a knob 210 provided at one end of a plug body 220 with an ash guard 240 of a cylindrical shape, and a heater element 250 provided as a heating body at the other end; and a lighter receiving section 100 including a socket body 110 which slidably fits the inserted lighter plug 200 to the ash guard 240, and which is locked and engaged by the socket claw 112 in a recess 242 formed in the ash guard 240, and a bimetal 130 which holds or releases the lighter plug 200 by changing temperature of the heater element 250 according to a current supply state from a plus electrode 142 for supplying the current of the heater element 250. The socket claw 112 formed in the socket body 110 is formed in a cantilever shape toward a direction opposite to a direction along which the lighter plug 200 is inserted.

Description

  The present invention relates to a cigarette writer, and more particularly to a cigarette writer that can be suitably used for a commercial accessory plug.

  The cigarette writer has long been used as its basic configuration. For example, a writer plug composed of a heating element, a knob, an ash guard, etc., a socket body that holds the inserted writer plug, and a heating element are energized. In addition, it is composed of a bimetal or the like that holds a writer plug and a writer receiving portion that is provided on an instrument panel or the like of an automobile (see Patent Document 1).

  According to the cigarette writer of Patent Document 1, the following writer operation is possible. That is, when the writer plug is slid and attached to the socket body, the recess on the writer plug side is locked to the socket claw on the socket body side. Further, when the knob is pushed in, the writer plug slides to the back against the spring biasing force and is held by the bimetal. In the state held by the bimetal, an energization path is formed from the plus terminal to the heating element through the bimetal. When the heating element is energized, the temperature rises and the bimetal deforms outward, and when the predetermined temperature is reached, the writer plug held by the bimetal is released and the writer body protrudes to the operator side by the spring biasing force. Moving. The operator can take out the writer plug from the writer receiving portion by pulling the knob protruding forward from the writer receiving portion, and can ignite the cigarette by the heating element of the writer plug.

JP 2004-36995 A

  However, according to the conventional configuration, when the accessory product plug is inserted instead of the writer plug, the accessory product plug may interfere with the socket claw on the socket body side.

  Accordingly, an object of the present invention is to provide a cigarette writer that can suppress interference between an inserted accessory product plug and a socket claw on the socket body side, and is also suitable for use with an accessory product plug.

  [1] In order to achieve the above object, the present invention provides a writer plug in which a knob is provided at one end of a plug body having a cylindrical ash guard and a heating element is provided at the other end, and the inserted writer A socket body that is slidably engaged with the ash guard and is engaged with a recess formed in the ash guard with a socket claw, and a current supplied from the plus electrode to the heating element portion A bimetal that holds or opens the writer plug by changing the temperature of the heating element according to the supply state of the socket, and the socket claw formed on the socket body includes: The cigarette writer is formed in a cantilever shape in a direction opposite to the direction in which the writer plug is inserted.

  [2] The cigarette writer according to [1], wherein the writer receiving unit is inserted and mounted in addition to the writer plug, an accessory product plug to which current is supplied from the positive electrode. There may be.

  [3] The cigarette writer according to [1] or [2], wherein the socket pawl is set to have a width that gradually increases in a direction in which the writer plug is inserted. May be.

  According to the present invention, it is possible to provide a cigarette writer that can suppress interference between an inserted accessory product plug and a socket claw on the socket body side, and is also suitable for use with an accessory product plug.

1A is a longitudinal sectional view of the cigarette writer according to the embodiment of the present invention indicated by AA in FIG. 1B, and FIG. 1B is a cross-sectional view of FIG. It is a right view. 2A is a BB longitudinal sectional view of the cigarette writer according to the embodiment of the present invention indicated by BB in FIG. 2B, and FIG. 2A is a view in FIG. 2A. It is a right view. FIG. 2A shows a cross section orthogonal to FIG. FIG. 3 is a plan view of the socket body viewed from the direction C shown in FIG. 4 is a view corresponding to FIG. 2 (a) showing a state where the writer plug in FIG. 2 is pushed. Fig.5 (a) is a longitudinal cross-sectional view which shows the insertion process of an accessory goods plug, FIG.5 (b) is a longitudinal cross-sectional view which shows the case where an accessory goods plug is pushed in and it is set as the use condition.

(Embodiment of the present invention)
1A is a longitudinal sectional view of the cigarette writer according to the embodiment of the present invention indicated by AA in FIG. 1B, and FIG. 1B is a cross-sectional view of FIG. It is a right view. 2 (a) is a BB longitudinal sectional view of the cigarette writer according to the embodiment of the present invention indicated by BB in FIG. 2 (b), and FIG. 2 (a) is shown in FIG. ) Is a right side view. FIG. 2A shows a cross section orthogonal to FIG. The cigarette writer 10 according to the embodiment of the present invention is a writer plug in which a knob 210 is provided at one end of a plug body 220 having a cylindrical ash guard 240 and a heater element 250 as a heating element is provided at the other end. 200, the inserted writer plug 200 and the ash guard 240 in a slidable state, and the socket claw 112 engages and locks the recess 242 formed in the ash guard 240 with the socket claw 112, and the heater. A writer receiving unit 100 having a bimetal 130 that holds or releases the writer plug 200 when the temperature of the heater element 250 changes according to the supply state of the current from the positive electrode 142 that supplies current to the element 250. The socket claws 112 formed on the socket body 110 are Plug 200 is a formed structure in the shape of a cantilever in a direction opposite to the direction to be inserted.

  As shown in FIGS. 1 and 2, a circular attachment hole 401 is formed in the instrument panel 400 provided in front of the driver's seat of the vehicle, and the socket body 110 is fitted in the attachment hole 401. The socket body 110 is locked to the instrument panel 400 by a claw portion or the like formed on an attachment ring (not shown), and the writer receiving portion 100 is attached and fixed.

(Writer Acceptor 100)
The writer receiving portion 100 is generally configured by a socket body 110, a connector housing 120, a bimetal 130, a bolt 140, a socket insulator 150, a mounting member 160, a nut 170, a plus terminal 180, a minus terminal 185, and the like.

  FIG. 3 is a plan view of the socket body viewed from the direction C shown in FIG. The socket body 110 has a bottomed cylindrical shape as shown in FIGS. 1 and 2 and is formed by drawing and pressing using a drawing steel plate SPCD, for example. An opening 110b having a flange portion 110a is formed on the side where a writer plug 200 described later is inserted, and a bottom portion 110c is formed on the opposite bottomed side where a hole 110g into which a bolt 140 is inserted is formed. .

  As shown in FIG. 3, socket claws 112 are formed on the cylindrical surface 110h. After the drawing process, the socket claw 112 is formed by punching the peripheral part 110d of the socket claw 112 by press work, and as shown in FIG. 1, the ash guard 240 can be locked in a recess 242 of the ash guard 240 described later. A locking portion 110f that protrudes to the side and curves is formed by pressing. The socket claws 112 are formed at a plurality of locations on the cylindrical surface 110 h of the socket body 110 in the circumferential direction. In addition, the notch part 110e for preventing the interference with the bimetal 130 is formed by press working at a plurality of locations corresponding to the position of the bimetal 130.

  As shown in FIG. 3, the socket claw 112 is formed in a cantilever shape from the bottom 110 c side of the socket body 110 to the opening 110 b side. That is, it is formed in a cantilever shape in the direction opposite to the direction in which the writer plug 200 is inserted. Here, the width W1 at the base portion 112a of the cantilever of the socket claw 112 is set larger than the width W2 of the tip portion 112b. That is, the width is gradually increased in the direction in which the writer plug 200 is inserted. As a result, the bending stress acting on the cantilever due to the load acting mainly on the engaging portion 112f and its periphery can be made substantially equal in the length direction. As a result, the socket pawl 112 having a substantially uniform bending stress in the length direction with respect to the bending can be realized.

  As shown in FIGS. 1 and 2, the socket body 110 described above has a socket insulator 150, a bottom 110 c of the socket body 110, and a mounting member 160 fixed together by bolts 140 and nuts 170.

  The bolt 140 is formed of a conductive material and functions as a positive electrode terminal. The head of the bolt 140 is a positive electrode 142. When the bolt 140 is used as a power socket for a vehicle, a positive voltage is supplied by contacting the positive terminal 320 of the accessory plug 300. As shown in FIGS. 1 and 2, a bimetal 130 is fixed to the bolt 140 by caulking, and a plus voltage is applied to the bimetal 130 via the bolt 140.

  The socket insulator 150 insulates between the bolt 140 and the socket body 110. In other words, the bolt 140 to which a positive voltage is applied is insulated from the negative socket body 110.

  The attachment member 160 is integrally fixed to the socket body 110 by joint fastening, and the connector housing 120 is locked and fixed by a locking claw portion 161 formed on the mounting member 160. Thereby, the writer receiving part 100 with which the socket body 110 and the connector housing 120 were integrated can be comprised.

  A bimetal 130 as a heat-sensitive operation member formed by bending in a predetermined shape is fixed to the front end portion of the bolt 140 by caulking. Here, as shown in FIG. 2, the bimetal 130 has a shape in which the bimetal 130 locks a heater case 252, which will be described later, for example, a convex engagement portion 132 such as an R shape toward the heater case 252 side. And constitutes an engagement region with a heating element portion to be described later. The engaging portions 132 are provided at both ends, are formed in a U shape as a whole as shown in FIG. 2, and are fixed to the bolts 140 by caulking.

  Bimetal 130 is made by adding two types of metal plates with different coefficients of thermal expansion by adding manganese, chromium, copper, etc. to an alloy of iron and nickel, and bonding them by cold rolling. In this embodiment, it is deformed outward as the temperature rises. The bimetal 130 is applied with a positive voltage from the positive electrode 142 of the bolt 140, and via the heater case 252, heater element 250, heater rivet 254, plug body 220 (contact ring 224), slide ring 230, and ash guard 240. The socket body 110 is electrically connected. On the other hand, since the socket body 110 is connected to the negative terminal 185, power is supplied to the heater element 250 in a state where the heater element 250 is held by the bimetal 130.

  The connector housing 120 is made of resin, and a plus terminal 180 and a minus terminal 185 are attached therein. The positive terminal 180 is electrically connected to the bolt 140, while the negative terminal 185 is electrically connected to the socket body 110. For example, a temperature fuse that is disconnected at a predetermined temperature rise may be connected between the negative terminal 185 and the socket body 110.

(Writer plug 200)
On the other hand, the writer plug 200 includes a knob 210, a plug body 220, a slide ring 230, an ash guard 240, a heater element 250, and the like. The slide ring 230 and the ash guard 240 are integrally inserted into and fitted into the socket body 110, and the knob 210, the plug body 220, the heater element 250, etc. are ignited by being pushed further against the spring 222. It is set as the structure which performs.

  A caulking nut 214 is fixed to the plug body 220 together with the cap 216 by caulking. In addition, a heater rivet 254 is erected on the plug body 220, and a heater case 252 is fixed with the plug insulator 256 interposed therebetween. Further, a knob metal 212 is embedded in the caulking nut 214 by insert molding, and a knob 210 having a protruding threaded portion is fixed by screwing, so that the knob 210 and the plug body 220 are integrally formed. Yes.

  A heater element 250 or the like as a heating element is attached to the tip of the heater rivet 254. A heater case 252 is attached to the outer periphery of the heater element 250 so as to cover it. The outer peripheral portion of the heater case 252 has a protruding shape so that the convex engaging portion 132 of the bimetal 130 can be held when the knob 210 is pushed in for the ignition operation. In addition, one end of the heater element 250 is electrically connected to the heater case 252 and a positive voltage is applied, and the other end is electrically connected to the heater rivet 254. The plug body 220 and the contact ring are each formed of metal. 224, slide ring 230, and ash guard 240 are connected to socket body 110 and electrically connected to the minus side. Even without the contact ring 224, electrical connection between the plug body 220 and the slide ring 230 is possible.

  As shown in FIGS. 1 and 2, a slide ring 230 is slidably fitted on the outer periphery of the cap 216 and the plug body 220. The slide ring 230 is slidable between the cap 216 and the heater case 252. A spring 222 is mounted between the slide ring 230 and the cap 216 in an extended state, and a reaction force from the slide ring 230 is applied to the plug body 220, the knob 210, and the like.

  An ash guard 240 is fitted on the outer periphery of the slide ring 230 so as to be slidable with the slide ring 230. The ash guard 240 is a cylindrical member in which a flange portion 240a is formed, and a concave portion 242 in which the socket claw 112 is locked is formed on the outer peripheral portion over the entire circumference. The ash guard 240 can slide on the inner peripheral portion of the socket body 110, and can push the writer plug 200 until the flange portion 240a contacts the flange portion 110a of the socket body 110. Further, from this state, the knob 210, the plug body 220, the heater element 250, and the like can be further pushed in as an ignition operation.

(Use of cigarette writer)
When the writer plug 200 is inserted into the socket body 110, the writer plug 200 can be pushed in until the flange portion 240a of the ash guard 240 abuts against the flange portion 110a of the socket body 110. In this state, as shown in FIG. 1, the socket pawl 112 of the socket body 110 engages with the recess 242 of the ash guard 240 so that the writer plug 200 does not easily fall off the writer receiving portion 100.

  FIG. 4 is a view in which the writer plug 200 in FIG. 2 is pushed. In this pushed-in state, as shown in FIG. 4, the convex engaging portion 132 of the bimetal 130 engages with the outer edge of the heater case 252 to resist the biasing force of the spring 222 and the bimetal 130 causes the heater case 252 to move. Hold. In this state, a positive voltage is applied to one end of the heater element 250 from the positive terminal 180 of the connector housing 120 via the bolt 140 and the bimetal 130. On the other hand, the other end of the heater element 250 is electrically connected to the minus terminal 185 via the heater rivet 254, the plug body 220, the (contact ring 224), the slide ring 230, the ash guard 240, and the socket body 110.

  When the heater element 250 is energized, the temperature rises and the bimetal 130 is deformed outward, and when the predetermined temperature is reached, the engagement of the heater case 252 held by the bimetal 130 is released and the plug body 220 and the like The spring 222 is projected and moved to the operator side by the spring biasing force of the spring 222.

  The operator can take out the writer plug 200 from the writer receiving portion 100 by pulling the knob 210 protruding forward from the writer receiving portion 100 and ignite the cigarette by the heater element 250 that generates heat from the writer plug 200. .

(Use accessory plug operation)
Fig.5 (a) is a longitudinal cross-sectional view which shows the insertion process of an accessory goods plug, FIG.5 (b) is a longitudinal cross-sectional view which shows the case where an accessory goods plug is pushed in and it is set as the use condition. The accessory product plug 300 shown in FIGS. 5A and 5B has a plus terminal 320 provided at the tip of the plug body 310 on a substantially cylinder and a minus terminal 330 provided on the cylindrical surface of the plug body 310. . The other components are not shown.

  When the accessory product plug 300 is inserted into the writer receiving portion 100, the positive terminal 320 is electrically connected to the positive electrode 142 formed on the head of the bolt 140, while the negative terminal 330 is connected to the socket body 110. Since it is in contact with the peripheral portion, it is electrically connected to the negative side of the writer receiving portion 100. As a result, the accessory plug 300 is energized and desired power is obtained.

(Effect of the embodiment of the present invention)
The embodiment of the present invention has the following effects.
(1) In the cigarette writer 10 according to the embodiment of the present invention, the socket claw 112 provided on the socket body 110 is formed in a cantilever shape in the direction opposite to the direction in which the writer plug 200 is inserted. ing. Therefore, even when the accessory product plug 300 is inserted, the socket claw 112 and the minus terminal 330 of the accessory product plug 300 can be configured not to interfere with each other. Alternatively, interference between the socket claw 112 and the negative terminal 330 of the accessory product plug 300 can be suppressed to a minimum. Accordingly, interference between the inserted accessory product plug and the socket claw on the socket body side can be suppressed, and a cigarette writer suitable for use of the accessory product plug can be provided.
(2) In the configuration of the socket claw 112 shown above, the socket claw 112 is formed in a cantilever shape in the direction opposite to the direction in which the writer plug 200 is inserted. Therefore, even if it interferes with the minus terminal 330 of the accessory plug 300, it is limited to the vicinity of the tip 112b and the locking portion 112f of the socket claw 112. Since the vicinity of the tip portion 112b and the locking portion 112f in the shape of a cantilever is easily bent outward and does not easily cause plastic deformation, it is possible to provide a cigarette writer suitable for use with an accessory plug.
(3) In the shape of the cantilever of the socket claw 112, the width thereof is gradually increased toward the direction in which the writer plug 200 is inserted. As a result, the bending stress acting on the cantilever due to the load acting mainly on the engaging portion 112f and its periphery can be made substantially equal in the length direction. As a result, the socket claw 112 having a substantially uniform bending stress in the length direction with respect to the bending can be obtained, and the socket claw can be made strong against plastic deformation and the like.

  As mentioned above, although the cigarette lighter was demonstrated based on said embodiment, this invention is not limited to said embodiment, It is possible to implement in a various aspect in the range which does not deviate from the summary. is there.

DESCRIPTION OF SYMBOLS 10 ... Cigarette lighter 100 ... Writer receiving part, 110 ... Socket body, 110a ... Flange part, 110b ... Opening part, 110c ... Bottom part, 110d ... Peripheral part, 110e ... Notch part, 110f ... Locking part, 110g ... Hole, 110h ... cylindrical surface, 112 ... socket claw, 112a ... root part, 112b ... tip part, 112f ... locking part, 120 ... connector housing, 130 ... bimetal, 132 ... engagement part, 140 ... bolt, 142 ... positive electrode, 150 ... Socket insulator, 160 ... Mounting member, 161 ... Locking claw, 170 ... Nut, 180 ... Plus terminal, 185 ... Minus terminal 200 ... Writer plug, 210 ... Knob, 212 ... Knob metal, 214 ... Coking nut 216 ... Cap , 220 ... Plug body, 222 ... Spring, 224 ... Contact Ring, 230 ... Slide ring, 240 ... Ash guard, 240a ... Bridge, 242 ... Recess, 250 ... Heater element, 252 ... Heater case, 254 ... Heater rivet, 256 ... Plug insulator 300 ... Accessory product plug, 310 ... Plug body 320 ... plus terminal 330 ... minus terminal 400 ... instrument panel 401 ... mounting hole

Claims (3)

A writer plug in which a knob is provided at one end of a plug body having a cylindrical ash guard and a heating element is provided at the other end;
The inserted writer plug is slidably engaged with the ash guard, and a socket body that engages and locks a recess formed in the ash guard with a socket claw; A bimetal that holds or releases the writer plug when the temperature of the heating element changes according to the supply state of the current supplied to the writer receiving portion, and
The cigarette writer is characterized in that the socket claw formed on the socket body is formed in a cantilever shape in a direction opposite to a direction in which the writer plug is inserted.   The cigarette writer according to claim 1, wherein an accessory product plug to which current is supplied from the positive electrode is inserted and attached to the writer receiving unit in addition to the writer plug. The cigarette writer according to claim 1, wherein the socket claw is set to have a gradually increasing width in a direction in which the writer plug is inserted.

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