JPH05261199A - Cordless iron - Google Patents

Abstract

PURPOSE:To provide a cordless iron which is simple in structure and always keeps the operation timing of a shutter mechanism and a switch mechanism properly to surely prevent generation of spark. CONSTITUTION:A cordless iron comprises a power supply terminal 13 provided in a receiving area 12 of a placing table 10, a protection shutter 18 which can open and close a through hole 14 formed in the receiving area 12 and is elastically energized in the turning direction for closing the through hole 14 by a spring 21, and a normally opened open-close switch 26 for opening and closing the electric conduction between the power supply terminal 13 and the power supply. According to the operation of placing an iron main body to the placing table 10, the protection shutter 18 is turned against the spring 21 by the operation of the iron main body 1 to open the through hole 14, and the power receiving terminal 8 of the iron main body 1 is brought into contact with the power supply terminal 13 through the opened through hole 14. The open-close switch is opened by the turning operation of the protection shutter 18 in delay to the contact timing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless iron used for press finishing of clothes and the like.

[0002]

2. Description of the Related Art In recent years, cordless irons in which a power cord is not derived from an iron body have become popular. This type of cordless iron is composed of an iron body and a mounting table.

A mounting portion is formed on the upper surface of the mounting table so as to be inclined in one direction, and a receiving portion is provided on the lower end side of the inclination of the mounting portion, and a power supply terminal electrically connected to a power source is arranged in the receiving portion. The iron main body is provided with a power receiving terminal projecting from the rear of the iron main body.

When the iron body is placed on the placing portion with its rear part facing the receiving portion of the mounting table, the iron body slides toward the receiving portion by its own weight, and the power receiving terminal receives the receiving portion. The power source terminal is contacted through a through hole formed in the wall surface of the iron, and the heater energizes by this contact to heat the base of the iron body.

After the base has risen to a predetermined temperature, the iron main body can be taken out of the mounting table and the ironing operation can be performed with the iron main body. Then, the iron body is placed on the placing table when the work is paused, and the base is reheated to proceed with the ironing work.

The power supply terminal is arranged so as to face the through hole formed in the receiving portion. Therefore, when a foreign matter is inserted into the receiving portion through the through hole, the foreign matter damages the power supply terminal. For this reason, a movable protective shutter is provided between the power supply terminal and the through hole.In normal times, the protective shutter closes the through hole to protect the power supply terminal, and the iron is placed on the placing part. There is provided a shutter mechanism for operating the protective shutter to open the through hole when the iron body is placed on the iron body and slides toward the receiving portion side.

Further, when the power receiving terminal of the iron body comes into contact with the charged power terminal, a spark is generated at the time of the contact, and the spark causes discomfort or anxiety to the user, and the power receiving terminal or the power terminal is damaged early. Therefore, there is a normally open switch that opens and closes the continuity between the power supply terminal and the power supply. Normally, this switch keeps the power supply terminal in a non-charged state, and the iron body is on the receiving side. After the power receiving terminal comes in contact with the power supply terminal after sliding, the operation of the iron body closes the open / close switch to charge the power supply terminal, and a switch mechanism is provided to prevent the occurrence of sparks due to this timing deviation. Has been.

[0008]

However, in the prior art, the shutter mechanism and the switch mechanism are individually configured, so that the structure is complicated, and various parts must be incorporated in the receiving portion. Since the assembly is troublesome and the manufacturing cost is high, and the shutter mechanism and the switch mechanism operate separately, the timing at which the shutter mechanism opens and the power receiving terminal of the iron body contacts the power terminal of the mounting table, and the switch mechanism There is a risk that the timing will be closed and the power supply terminal will be charged, or the switch mechanism will be closed before the power receiving terminal contacts the power supply terminal, causing a spark. There are insufficient aspects.

The present invention has been made by paying attention to such a point, and an object of the present invention is to have a simple structure and to maintain a proper timing of operation of the shutter mechanism and the switch mechanism at all times. It is to provide a cordless iron that can reliably prevent the occurrence.

[0010]

In order to achieve such an object, the present invention has an iron main body having a power receiving terminal that is electrically connected to a heater of a base, and the iron main body can be placed on the iron main body. A mounting table having a receiving portion for receiving the iron body, and a power supply terminal provided in the receiving portion,
A cutout portion formed on the wall surface of the receiving portion facing the power supply terminal, a protective shutter elastically urged by a spring in an operation direction capable of opening and closing the cutout portion, and A normally open switch for opening and closing the electrical connection between the power supply terminal and the power supply by the operation of the protective shutter and the operation of the protection shutter;
Depending on the placement of the iron body on the mounting table, the notch is opened by the protection shutter operating against the spring by an operation by the iron body,
The power receiving terminal of the iron body comes into contact with the power source terminal through the opened notch, and the operation element is operated by the action against the spring of the protective shutter at the timing of this contact to close the open / close switch. It is configured as follows.

[0011]

When the iron body is used, the iron body is lifted and placed on the placing table. In response to this, first, the protective shutter operates against the spring by the operation of the iron main body, the notch is opened by the operation of the protective shutter, and the power receiving terminal of the iron main body is opened in the receiving part through the opened notch. Touch the power terminal. At this time, the power supply terminal is held in a non-charged state by the normally open / closed switch, so that no spark is generated due to the contact with the power receiving terminal.

Even after the power receiving terminal comes into contact with the power source terminal, the protective shutter is further operated by the operation of the iron body,
By this operation, the operator of the open / close switch is operated, the open / close switch is closed by this operation, the power supply terminal is charged, the heater is energized from this power supply terminal through the power receiving terminal, and thereby the base is heated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 shows the overall appearance of the cordless iron, wherein 1 is an iron body, and this iron body 1 is a die-cast base 3 into which a heater 2 is cast, and a heat shield covering the upper surface of the base 3. Cover 4 and this heat shield cover 4
And a handle 5 attached to the top of the.

A cassette-type water tank 6 is detachably provided at the front of the handle 5, and the water in the water tank 6 is appropriately guided to a vaporization chamber (not shown) of the base 3 from the bottom surface of the base 3. It can be spouted as steam. The handle 5 has a vertically long groove-shaped recess 7 having a relatively wide width on the rear end surface, and the heater 2 is provided on the inner surface of the recess 7.
A pair of pin-shaped power receiving terminals 8 electrically connected to each other are projectingly provided.

Reference numeral 10 denotes a mounting table on which the iron main body 1 is mounted. The mounting table 10 has a mounting portion 11 on its upper surface, and the mounting portion 11 is inclined in one direction, and the end portion on the lower end side of the inclination. To
A receiving portion 12 that can be fitted into the recess 7 of the iron body 1 is formed. Then, as shown in FIG.
A pair of power supply terminals 13 are provided inside the power supply terminals 1.
A pair of through holes 14 are formed as notches in the front wall of the receiving portion 12 so as to oppose to each other. As shown in FIG. 1, the power supply terminal 13 is supported via a conductive leaf spring 15, and can be displaced to the inner side of the receiving portion 12 by elastic deformation of the leaf spring 15.

A protective shutter 18 is provided between the power supply terminal 13 and the through hole 14, and the protective shutter 18 has support pieces 19 at both end edges thereof, and a support pin 20 is provided between the front ends of the support pieces 19. Both ends of this support pin 20 are inserted into both inner wall surfaces of the receiving portion 12 and are inserted. The protective shutter 18 is rotatably supported in the vertical direction via the support pin 20, and a spring 21 is provided between the support piece 19 of the protective shutter 18 and the support pin 20. The shutter 18 is elastically biased in the upper rotation direction.

A projecting piece 24 is integrally formed on the front surface of the protective shutter 18, and the projecting piece 24 is formed on the front wall of the receiving portion 12 by the urging force of the spring 21.
5 to the front side of the receiving portion 12. Then, in the state where the projecting piece 24 projects toward the front surface of the receiving portion 12 in this way, the upper end portion of the protective shutter 18 is arranged between the power supply terminal 13 and the through hole 14 to close the through hole 14, When the protective shutter 18 pivots downwardly around the support pin 20 against the spring 21 as a fulcrum, the upper end of the protective shutter 18 is disengaged from between the power source terminal 13 and the through hole 14 and the transparent shutter 18 is removed. The hole 14 is open.

A power supply terminal 13 is provided at the bottom of the inside of the receiving portion 12.
A normally open opening / closing switch 26 is provided in a conduction circuit between the power source and the power source, and the opening / closing switch 26 has an elastically projecting operator 26a, which is operated in response to a pressing operation on the operator 26a. The contacts are closed to electrically connect the power supply terminal 13 and the power supply. The opening / closing switch 26 is provided in the receiving portion 12 so that the operator 26a thereof projects toward the front surface side of the receiving portion 12 and is arranged on the rotation locus of the protective shutter 18.

As shown in FIGS. 4 to 6, the mounting table 10 has a pair of side walls 30 arranged on both sides of the mounting portion 11, and the upper edge portions of the side walls 30 have a recessed portion along the longitudinal direction thereof. Portions 31 are formed, and relatively long guide rollers 32 are housed in these recessed portions 31. As shown in FIGS. 7 and 8, these guide rollers 32 are provided with a coating layer 34 such as silicone rubber having appropriate elasticity on the outer periphery of a core portion 33 formed of metal or the like. And the core 3
Shafts 35 are integrally projectingly provided on both end surfaces of the shaft 3.
The guide roller 32 is rotatably supported in the recessed portion 31 via the roller 5.

A ratchet 36 is attached to one shaft portion 35 of the core portion 33, and an elastically deformable engaging claw 37 that engages with the ratchet 36 in the side wall 30 of the mounting table 10.
The engagement between the engaging claw 37 and the ratchet 36 allows the guide roller 32 to rotate only in one rotation direction, that is, the inward direction of the side wall 30, and prevents rotation in the opposite direction. Is becoming Further, a plurality of freely rotatable guide rollers 32 are provided on the upper surface of the mounting portion 11 of the mounting table 10.

In such a structure, the iron body 1
When using, the iron body 1 is lifted by grasping the handle 5 by hand, and the iron body 1 is placed on the placing portion 11 of the placing table 10 with its rear portion facing the arrangement side of the receiving portion 12. In response to this, the iron body 1 slides under its own weight toward the inclined lower end side of the mounting portion 11, and the recessed portion 7 is fitted to the outer side portion of the receiving portion 12.

At the time of this fitting, first, as shown in FIG. 1, the protective shutter 1 in which the inner surface of the concave portion 7 projects to the front surface of the receiving portion 12.
It contacts the protruding piece 24 of No. 8. Then, due to this contact,
As shown in, the protrusion 24 is pushed inward of the receiving portion 12,
The protective shutter 18 resists the spring 21 and supports pin 2
It rotates downward about 0 as a fulcrum, the through hole 14 is opened, and the power receiving terminal 8 enters the receiving portion 12 through the through hole 14 and contacts the power source terminal 13.

At this time, the power supply terminal 13 is connected to the open / close switch 26.
Is held in the non-charged state, and therefore the occurrence of sparks due to the contact of the power receiving terminal 8 can be avoided.
During this operation, the iron body 1 causes the protruding piece 2 to move.
4 is pushed, the protective shutter 18 is further rotated downward, and the power receiving terminal 8 is surely brought into contact with the power source terminal 13. After that, as shown in FIG. The actuator 26a is brought into contact with the actuator 26a, and the contact causes the operator 26a to be pressed to close the open / close switch 26. At this time, the power supply terminal 13 is slightly displaced inward in the receiving portion 12 due to the elastic deformation of the leaf spring 15 while being in contact with the power receiving terminal 8.

When the open / close switch 26 is closed, the power supply terminal 13 is charged, and the heater 2 is energized from the power supply terminal 13 through the power receiving terminal 8 to heat the base 3.

After the base 3 has risen to a predetermined temperature or higher, the iron body 1 is taken out of the placing portion 11 and ironing work is performed, and the iron body 1 is placed on the placing portion 11 during resting. Place on top. With such placement, the heater 2 is energized each time, so that the temperature of the base 3 is maintained at a substantially constant set temperature during the ironing work. Whenever the iron body 1 is taken out of the placing portion 11, the protective shutter 1 is removed each time.
8 is rotated upward by the urging force of the spring 21, the through hole 14 is closed at the upper end of the protective shutter 18, and the power supply terminal 13 is protected.

By the way, the user usually uses the iron body 1
When the lower surface of the base 3 of the iron body 1 tries to come into contact with the upper end edge of the side wall 30 of the mounting table 10 because the lower surface of the base 3 of the iron body 1 contacts the upper edge of the mounting table 10 from an obliquely upper side of the mounting table 10. There are many. However, since the guide roller 32 that can freely rotate inward is provided at the upper edge of the side wall 30, the lower surface of the base 3 comes into contact with the peripheral surface of the guide roller 32, and the guide roller 32 rotates. The iron body 1 is smoothly guided to the inside of the side wall 30 so that the placing portion 11
Fits properly on top of. If the position of the center of gravity of the iron body 1 when the lower surface of the base 3 contacts the guide roller 32 is outside the side wall 30, the iron body 1 tries to drop toward the outside of the side wall 30, but Since the guide roller 32 is only allowed to rotate inwardly of the side wall 30 and is prevented from rotating outwardly by the engagement of the ratchet 36 and the engaging claw 37, the iron body 1 is prevented from falling out. Therefore, there is an advantage that it is possible to prevent the inconvenience that the floor surface is damaged or burnt due to the drop.

[0028]

As described above, according to the present invention,
Since the opening / closing switch is operated using the protective shutter that opens / closes the notch in the receiving part, a separate operating mechanism for the opening / closing switch is not required, so the structure is simple and the number of parts is reduced, and assembly is easy. Since the manufacturing cost is reduced and the opening / closing switch is operated by the operation of the protective shutter, the opening / closing switch is opened after the notch is opened by the operation of the protective shutter and the power receiving terminal of the iron body contacts the power supply terminal. When the power supply terminal is charged by closing the power supply terminal and the power receiving terminal contacts the power supply terminal, there is an advantage that the power supply terminal can be surely held in the non-charged state and the spark can be surely prevented. ..

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a main part of a cordless iron according to an embodiment of the present invention, showing a state before a power receiving terminal contacts a power supply terminal.

FIG. 2 is a sectional view showing a state at the time of contact as well.

FIG. 3 is a sectional view showing a state in which the open / close switch is closed after the same contact.

FIG. 4 is a side view showing the overall appearance of the cordless iron.

FIG. 5 is a plan view of a mounting table in the cordless iron.

FIG. 6 is a perspective view of a mounting table in the cordless iron.

FIG. 7 is a sectional view of a mounting portion of a guide roller on the mounting table.

8 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Iron main body 2 ... Heater 3 ... Base 8 ... Power receiving terminal 10 ... Mounting stand 12 ... Receiving part 13 ... Power supply terminal 14 ... Through hole (notch part) 18 ... Protective shutter 21 ... Spring 26 ... Open / close switch 26a ... Actuator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuharu Tsubaki 2570 1 Gosuda, Kamo City, Niigata Prefecture, 1570 Toshiba Heat Appliance Co., Ltd. (72) Hiroaki Sakai 2570 1 Gosuda, Kamo City, Niigata Prefecture 1 Toshiba Heat Inside the appliance Co., Ltd. (72) Inventor Yasuo Hida 2570, Gosuda 1 Kaji, Kamo City, Niigata Prefecture Toshiba Thermal Appliances Co., Ltd. (72) Inside Toshihiro Otaki 2570 Gosuda 1, Kamo City Niigata Prefecture 1 Inside Toshiba Thermal Equipment Co., Ltd.

Claims (1)

[Claims] 1. An iron main body having a power receiving terminal electrically connected to a heater of a base, a mounting table having a receiving portion capable of mounting the iron main body and receiving the mounted iron main body, and the inside of the receiving portion. A power supply terminal, a notch formed on the wall surface of the receiving portion facing the power supply terminal, and the notch can be opened and closed and is elastically attached by a spring in an operation direction of closing the notch. And a normally open switch for opening and closing electrical continuity between the power supply terminal and the power source by the operation of the protection shutter and the operation of the protection shutter. Depending on the placement of the iron main body on the mounting table, the protection shutter operates in opposition to the spring by the operation of the iron main body to open the notch, and the opened notch is passed through. The power receiving terminal of the iron body comes into contact with the power source terminal, and the operation element is operated by an operation against the spring of the protective shutter, and the opening / closing switch is closed, at the timing of this contact. Cordless iron.