JPH05154300A - Cordless iron - Google Patents

Abstract

PURPOSE:To improve safety and the operation performance of an iron by installing a grounding terminal part on an iron and installing a grounding connection terminal part connected to the grounding wire of an electric power cord on the stand, and generating connection outside an insertion port when the iron is placed on the stand. CONSTITUTION:An iron 1 is equipped with a plurality of electricity receiving terminals 13, 14 and 15, and a stand 2 is equipped with terminal insertion holes 22, 23 and 24, a plurality of electricity supply terminals, and an electric power cord having a grounding wire. When the iron 1 is placed at a prescribed position of the stand 2, a plurality of electrity receiving terminals 13, 14 and 15 are connected with a plurality of electricity supply terminals, passing through the insertion holes 22, 23 and 24. The iron 1 is equipped with a grounding terminal 16 which is constituted of an electric conductive member, and the stand 2 is equipped with a grounding connection terminal part 26 connected to the grounding wire of a power cord. The grounding terminal part 16 and the grounding connection terminal part 26 are connected outside the insertion holes 22, 23 and 24, when the iron 1 is placed on the stand 2.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cordless iron having a grounding circuit.

[0002]

2. Description of the Related Art A conventional cordless iron has a plurality of power receiving terminals arranged at the rear of the iron, as shown in, for example, Japanese Patent Laid-Open No. 62-72400. A power supply terminal connected to the power receiving terminal is provided. Since a predetermined voltage is applied to the power supply terminal, the power supply terminal is placed inward of the exterior surface of the stand so that it is not touched by the user's hand or finger, and the connection with the power receiving terminal is an insertion hole provided on the exterior surface. It is configured to be performed via. By the way, in consideration of use by connecting to a high-voltage power source such as 200 V, it becomes necessary to provide a ground circuit for preventing electric shock. However, if the earth circuit that connects the iron and the stand has the same structure as the conventional connection structure of the power receiving terminal and the power feeding terminal, the number of terminals to be inserted through the insertion holes provided on the exterior surface of the stand increases. When the iron is placed on or removed from the stand, it becomes difficult for the iron side terminal to be inserted into or pulled out from the insertion hole provided in the stand. Therefore, there arises a problem that the operability during ironing deteriorates.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to improve safety when using by connecting to a high voltage power source and improve operability of an iron.

[0004]

The present invention comprises an iron and a stand, wherein the iron is provided with a plurality of power receiving terminals, the stand having a terminal insertion hole, a plurality of power feeding terminals, and a power supply with a ground wire. A cordless iron including a cord, wherein when the iron is placed on the stand, the plurality of power receiving terminals are connected to the power feeding terminal through the insertion hole, a ground terminal portion formed of a conductive member on the iron. The stand is provided with a ground connection terminal portion connected to the ground wire of the power cord, and the ground terminal portion and the ground connection terminal portion are outside the insertion hole when the iron is placed on the stand. It is arranged so as to be connected by.

[0005]

Since the present invention is configured as described above, when the iron is placed on the stand, the power receiving terminal of the iron is connected to the power feeding terminal through the insertion hole of the stand to supply power to the iron. On the other hand, the ground terminal portion of the iron is connected to the ground connection terminal portion of the stand to form a ground circuit that connects the iron and the ground wire of the power cord. Therefore, even if the iron leaks due to an accident, the ground circuit prevents the iron user from receiving an electric shock. Further, since the connection between the grounding terminal portion of the iron and the grounding connection terminal portion of the stand is made without passing through the insertion hole, the connection operation becomes easy, and therefore the operation of placing and removing the iron on the stand during ironing is performed. The property is improved.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, (1) is an iron, and (2) is a stand on which the iron is placed. On the lower surface of the iron (1), an aluminum alloy base (3) having a heater embedded therein is electrically insulated and attached. A cover (4) covering the base () is fixed to the upper surface of the base (), a handle body (5) is fixed to the upper surface of the cover (4), and a water tank (6) is provided in front of the handle body (5). It is detachably attached. A hollow rod-shaped grip portion (7) is formed on the upper part of the handle body (5), and a control circuit (9) including a microcomputer (8) and the like is housed in the grip portion (7). .. A space covered with a rear lid (10) is formed at the rear of the handle body (5), and a power supply circuit (11) is housed in this space. As shown in FIG. 2, the rear lid (10) has a recess (12) formed in the lower central part thereof.
2) a plurality of power receiving terminals (13) (14 (15) are provided so as to project rearward, and left and right power receiving terminals (13).
(15) supplies a high voltage power source of, for example, 200 V to the heater, and the power receiving terminal (14) at the center is the power source circuit (1).
For example, a low voltage power supply of 100 V is supplied to 1). A metal ground terminal (16) is fixed to the rear lid (10) outside the recess (12), and this ground terminal (16) is fixed.
Is connected to the base (3) via a lead wire (17). In addition, most of the outer peripheral surface of the iron (1) is covered with a synthetic resin having high electric insulation.

On the other hand, the stand (2) has a heat-resistant support pillar (18) for supporting the base (3) of the iron (1) on its upper surface and a receiving surface (19) for supporting the rear part of the iron (1). As shown in FIG. 1, a cord winding portion (20) for winding a three-wire type power cord (not shown) with a ground wire is housed inside. The receiving surface (1
As shown in FIG. 3, a projecting portion (21) that fits into the recessed portion (12) of the iron is formed in 9), and the power receiving terminals (13), (14), and (15) are inserted into these projecting portions, respectively. Insertion holes (22), (23) and (24) are formed, and these terminal insertion holes are normally closed by a shutter device (25) so as to open only when the iron is placed. A plurality of power supply terminals (not shown) are arranged in the convex portion (21) so as to face the terminal insertion holes (22), (23) and (24). Then, the power supply terminals corresponding to the left and right insertion holes (22) and (24) are respectively connected to the 200V power supply lines of the power cord, and the power supply terminals corresponding to the central terminal hole (23) reduce the 200V voltage to 100V voltage. It is connected to the output circuit.

A hole is formed in the receiving surface (19) at a position corresponding to the grounding terminal (16) of the iron, a grounding connection terminal (26) is arranged, and a leaf spring (27) is arranged in a direction projecting this terminal. It is elastically supported by. The ground connection terminal (26) is connected to the ground wire of the power cord via the lead wire (28).

In the above structure, when ironing, the power cord of the stand is set to a predetermined power source, for example, 200
When connected to the V power supply, the left and right terminal insertion holes (22) (2
A voltage of 200 V is applied between the power supply terminals corresponding to 4), and a voltage of 100 V is applied to the center power supply terminal. Then, when the iron (1) is placed on the stand (2) as shown in FIG. 1, the shutter device (25) shown in FIG. 3 is activated during the placing operation to operate the terminal insertion holes (22) (2).
3) (24) is opened, and the power receiving terminals (13), (14), and (15) of the iron (1) are inserted therein, and the corresponding power feeding terminals are connected. Therefore, the iron (1) activates the control circuit (9) by supplying power to the power receiving terminals (13), (14) and (15), and the heater is energized according to the user's operation.

On the other hand, the ground terminal (16) provided on the rear part of the iron (1) comes into contact with the ground connection terminal (26) arranged so as to project from the receiving surface (19) of the stand (2). As a result, the base (3) of the iron (1) is connected to the lead wire (1).
7), ground terminal (16), ground connection terminal (26),
It is connected to the ground of the power supply through the leaf spring (27), the lead wire (28), and the ground wire of the power cord. Therefore, even if an electric leakage occurs inside the iron (1) due to some failure, the electric leakage current flows through the ground path through the base (3), so that the operator is forced to iron (1).
There is no electric shock when touching.

The ground terminal (16) is the power receiving terminal (1
3) Since it is not necessary to insert it into the insertion hole as in (14) and (15), the operability of connecting the iron (1) and the stand (2) does not deteriorate. Furthermore, since no voltage is applied to the earth connection terminal (26) exposed to the outside from the upper surface of the stand (2) in a normal state, there is no electric shock even if it is touched by a finger and it is safe.

In the above embodiment, the ground terminal (16) is connected to the base (3) which has the highest conductivity, is electrically insulated at all times, and has the widest area among the iron constituent parts. The ground terminal may be connected to something other than the base as long as it is highly conductive and is electrically insulated at all times.

Further, although the ground connection terminal (26) is connected to the base (3) through the ground terminal (16), the shape of the base (3) and the mounting position of the ground connection terminal (26) are changed to ground. The connection terminal (26) may directly abut the conductive portion of the base (3). In addition, the tip of the support pillar (18) of the stand (2) is made of a highly conductive member, and this member is connected to the ground wire of the power cord, and through the support pillar (18) that abuts the base (3). It may be configured to be grounded. In this case, since the base becomes less conductive when subjected to the fluorine treatment, at least the support column (18)
It is necessary to improve the conductivity by applying metal plating or the like to the area where the tip of the contact.

[0014]

As described above, according to the present invention, the iron can be grounded through the stand by placing the iron at a predetermined position of the stand, so that even if the iron is leaked, the operator can It is possible to prevent the accident of touching the iron and electric shock, and improve the safety. Further, since the connection of the ground circuit between the iron and the stand is made at a position different from the conventional terminal to which the voltage is applied, it is not necessary to insert the ground terminal portion into the insertion hole like the conventional terminal, The operability when ironing can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a rear portion of the iron according to the embodiment.

FIG. 3 is a perspective view of a rear portion of the stand of the embodiment.

[Explanation of symbols]

 1 Iron 2 Stand 13 Power receiving terminal 14 Power receiving terminal 15 Power receiving terminal 16 Ground terminal 22 Terminal insertion hole 23 Terminal insertion hole 24 Terminal insertion hole 26 Ground connection terminal

Claims (1)

[Claims] 1. An iron and a stand, wherein the iron includes a plurality of power receiving terminals, the stand includes a terminal insertion hole, a plurality of power supply terminals, and a power cord with a ground wire. In a cordless iron in which the plurality of power receiving terminals are connected to the plurality of power feeding terminals through the insertion hole when placed at a predetermined position,
The iron is provided with a ground terminal portion made of a conductive member, the stand is provided with a ground connection terminal portion connected to a ground wire of the power cord, and the ground terminal portion and the ground connection terminal portion are the iron stand. A cordless iron, which is arranged so as to be connected to the outside of the insertion hole when placed on the.