JP3246273U - Connection structure of electric heating rod for hair treatment - Google Patents

Abstract

[Problem] To provide a connection structure that allows one-touch connection between an electric heating rod for hair treatment and a connector and has improved flexibility. [Solution] The connection structure for an electric heating rod for hair treatment comprises an electric heating rod 1 around which hair is wound, and a connector 2 for supplying power that is detachably connected to the electric heating rod. The electric heating rod 1 comprises a casing that liquid-tightly covers a heater that generates heat, and the casing comprises rod terminals 11, 12, 13. The connector 2 comprises connector terminals 21, 22, 23 at its tip and a current-carrying cable 9 at its base end. The connector-side connection part having the connector terminals at its tip is in a rotatable engagement relationship with the rod-side connection part of the electric heating rod 1. The connector-side connection part and the rod-side connection part comprise magnet connection mechanisms 18, 19 that detachably connect by magnetic force, and the connector 2 is held rotatably relative to the rod 1 while maintaining a connection state between the current-carrying terminals. [Selected Figure] Figure 3

Description

The present invention relates to a connection structure for an electric heating rod for hair treatment, and more specifically, an electric heating rod for hair treatment in which a connector for power supply is connected to the electric heating rod to generate heat after the electric heating rod is wrapped around the hair. This is related to the connection structure of.

Japanese Patent Application Publication No. 2003-102534 Japanese Patent Application Publication No. 2005-65975 Japanese Patent No. 4,693,791 Conventionally, some permanent hair waving treatments (hereinafter referred to as perms) performed in beauty salons and the like use electric heating rods.

This electric heating rod for perms has a built-in heating element such as a heater that generates heat when connected to a power source. After wrapping hair with a curling agent applied around the electric heating rod, waves can be formed in the hair by heating the electric heating rod.

An electric cable is connected to this electric heating rod, and electricity is supplied from a power source provided in the main body of the perm device, which has a box-like shape or the like. One example of this is Patent Document 1. That is, in the above-mentioned conventional technology, in order to supply power to the electric heating rod, a power supply connector jack is provided on the electric cable connected to the power source, and the connection part between the electric heating rod and the power supply connector jack becomes an electrical contact, and power is supplied to the electric heating rod by connecting the connector jack to the electric heating rod. Patent Document 2 employs an electromagnetic induction method, rather than an electrical contact, at the connection part between the electric heating rod and the power supply connector.

In the case of the electrical contact method of Patent Document 1, hair is wrapped around the electric heating rod and a connector jack for power supply is inserted, but if the connector jack is not pushed in with an insertion force exceeding a certain level during insertion, a failure in conduction may occur. You may not be able to remove the connector jack unless you pull it hard when attaching and detaching it. At this time, there are problems in that the hair wrapped around the electric heating rod may come off, or the electric heating rod may be pulled, causing discomfort to the person being treated.

On the other hand, in Patent Document 2 and Patent Document 3, problems remain in connection flexibility. In particular, when performing hair treatments using electric heating rods, it is necessary to wrap many electric heating rods around the hair of the hair being treated and connect the connector at the end of the cord to each of the wrapped electric heating rods. be. Therefore, in addition to being able to connect with a single touch, flexible connections are required that provide a high degree of freedom and flexibility in connection in order to prevent cords from becoming entangled.

This invention aims to provide a connection structure that allows for one-touch connection between an electric heating rod for hair treatment and a connector, while also improving flexibility.

The present invention solves the above-mentioned problems in a connection structure of an electric heating rod for treating hair, which comprises an electric heating rod around which hair is wrapped, and a connector for supplying power that is detachably connected to the electric heating rod, the electric heating rod comprising a heater that generates heat when electricity is passed through it, and a casing that liquid-tightly covers the heater, the casing of the rod having a rod terminal that can be connected to the connector, the connector having a connector terminal at its tip that can be electrically connected to the rod terminal, and an electric cable at its base end, by implementing the following measures.
The present invention provides a connection structure for an electric heating rod for treating hair, characterized in that the connector has a connector side connection portion at its tip, the connector side connection portion has the connector terminal at its tip, the casing of the rod has a rod side connection portion that is in a rotatable engagement with the connector side connection portion, the rod side connection portion has the rod terminal, the connector side connection portion and the rod side connection portion have a magnetic connection mechanism that connects them detachably by magnetic force, and the connector side connection portion is configured to be rotatably held relative to the rod side connection portion while maintaining an electrically conductive connection state between the connector terminal and the rod terminal.

The hair treatment electric heating rod and the connector can be connected with one touch, and a connection structure with improved flexibility can be provided.

FIG. 1 is an overall perspective view showing a usage state of a perm device using an electric heating rod according to an embodiment of the present application. (A) A perspective view of a connected state of an electric heating rod and a connector according to an embodiment of the present application, and (B) a side view of a connector according to another embodiment of the present application. 1A is a diagram illustrating the main parts of the connected state of an electric heating rod and a connector according to an embodiment of the present application, in which (A) shows an end face of the connector, (B) shows the main parts of the connected state, and (C) shows an end face of the electric heating rod. (A) is a diagram illustrating the main parts of the connected state of an electric heating rod and a connector according to an embodiment of the present application. FIG. 2 is a circuit diagram of the electric heating rod. FIG. 7 is a sectional view of a main part showing a modified example of the connector according to the embodiment of the present application.

Embodiments of the present invention will be described below with reference to the drawings.
(About perm equipment)
As shown in FIG. 1, this perm device includes an operation control unit 4 that includes an AC power source (not shown), a large number of energizing cables 9 connected to the operation control unit 4, and the tip of each energizing cable 9. The present invention includes a connector 2 for power supply connected to the connector 2, and a number of electric heating rods 1 detachably connected to the connector 2 and wound around the hair of the person S to be treated. Note that the term "many" of the above-mentioned energizing cables 9 and heating rods 1 means a plurality of them, particularly 10 or more.
(About electric heating rod)

As shown in FIG. 2(A), FIG. 3, and FIG. It is configured to eliminate directionality when closing and rotating. Specifically, the inner annular terminal 12 and the outer annular terminal 11 are arranged concentrically around the center terminal 13. The electric heating rod 1 includes a cylindrical casing 14, in which a heater 15 that generates heat when energized and a temperature sensor 16 are arranged. A rod-side connecting portion 17 is provided on one end surface of the casing 14, and each of the rod terminals 10 described above is arranged in an exposed state in this rod-side connecting portion 17.

As the heater 15 in the casing 14, a planar heating element such as a film heater is suitable, and although not shown, this heater 15 is arranged along the inside of the cylindrical wall surface of the casing 14. The temperature sensor 16 senses the temperature of the cylindrical wall surface of the casing 14 (preferably the temperature of the outer peripheral surface, but may also be the temperature of the inner peripheral surface).
(About the rod terminal 10)

The rod terminal 10 has an outer ring terminal 11 that is connected to a temperature sensor 16 together with the inner ring terminal 12 as a common terminal, and is also connected to a heater 15 together with the center terminal 13, but the correspondence of these connections can be changed as appropriate.

Note that the number of terminals can be changed as appropriate, and two terminals each may be connected to the heater 15 and the temperature sensor 16 as four terminals. Conversely, if the temperature sensor 16 is not used, it can also be implemented as two terminals. Although the center terminal 13 has a solid circular shape in this example, it may have an annular shape like the other terminals 11 and 12. That is, all three terminals may be donut-shaped and arranged concentrically.
(Regarding the rod side connection part 17)

The rod side connection part 17 of the casing 14 has a cylindrical shape with a central protrusion 17a at the center that protrudes one step from a peripheral edge part 17b on the outer periphery of the base part. The tip surface of the central protrusion 17a is flat, and the central terminal 13 is arranged at the center of the surface, and the inner annular terminal 12 is arranged concentrically around the central terminal 13.
The peripheral portion 17b is a concentric flat surface disposed outside the base of the central protrusion 17a, and the outer annular terminal 11 is disposed on the surface thereof.

A magnetically attached portion 18 such as a permanent magnet is provided behind the outer annular terminal 11 inside the peripheral portion 17b. This magnetically attached portion 18 corresponds to a magnetically attached portion 19 provided on the connector 2 described below, and maintains the rotational connection state between the electric heating rod 1 and the connector 2. Either one of the magnetically attached portions 18, 19 may be a permanent magnet and the other may be a ferromagnetic material, or both may be permanent magnets. Both magnetically attached portions 18, 19 only need to be attracted by magnetic force, and do not necessarily need to be exposed to the outside. Although the magnetically attached portion 18 is arranged in a ring shape together with the outer annular terminal 11, it may be appropriately changed, such as being arranged between the terminals, as long as it is possible for it to be attracted to the magnetically attached portion 19.
In this example, the outer wall portion 17c is disposed outside the peripheral portion 17b, but this may be omitted or the shape may be changed as appropriate.
(About the connector)

Next, the connector 2 provided at the tip of the current-carrying cable 9 will be described with reference to Figures 2 to 4. This connector 2 comprises a connector base 41 to the base end of which the current-carrying cable 9 is connected, and a connector-side connection part 42 disposed at an angle to the connector base 41 (70 degrees in the example of Figure 2(A)), but as shown in Figure 2(B), the connector base 41 and the connector-side connection part 42 may be connected in a manner that allows them to rise and fall via a pivoting connection part 43 that is angle-adjustable.

The connector-side connection portion 42 is detachably connected to the rod-side connection portion 17 of the electric heating rod 1, and has the connector terminal 20 and the above-mentioned magnetic attachment portion 19 arranged at its tip. The connector terminal 20 includes an annular outer terminal 21 connected to the outer annular terminal 11, an axial inner terminal 22 connected to the inner annular terminal 12, and an axial central terminal 23 connected to the center terminal 13. They are arranged at intervals equal to the intervals between the rod terminals 10 of the electric heating rod 1, but the shape can be changed as appropriate, such as annular, dotted, or planar.

In addition, in this embodiment, the central portion 2a of the end surface of the connector 2 where the inner terminal 22 and the central terminal 23 are provided is recessed into a cylindrical shape relative to the peripheral convex portion 2b to connect the electric heating rod 1 to the rod side. It is designed to be easy to connect to the section 17.
A flat surface and the outer terminal 21 are disposed on the distal end surface of the peripheral convex portion 2b, and a magnetically attached portion 19 such as a permanent magnet is provided inside the outer terminal 21 behind the outer terminal 21.

Note that the primary purpose of the uneven fitting between the connector-side connecting portion 42 and the rod-side connecting portion 17 is positioning, and positioning so that the positions of the corresponding terminals can easily match each other, so forced fitting is not possible. It doesn't have to be. From the viewpoint of facilitating attachment and detachment, it is desirable to have a relatively large clearance within a range that does not shift the position.

The connector 2 is attached by being wired to the tip of a three-wire cable 9 connected to the operation control unit 4. The electric heating rod 1 is wrapped around the hair of the patient without being connected to the cable 9. After wrapping is complete, the tip of the connector 2 is connected to the rod side connection part 17 of the electric heating rod 1 and magnetically attached. In this state, the three connector terminals 20 of the connector 2 come into contact with the rod terminals 10 of the electric heating rod 1, allowing electricity to flow. Then, the operation control unit 4 is operated to generate heat in the heater 15 and heat the hair. At this time, the temperature sensor 16 detects the temperature near the cylindrical wall surface of the casing 14, allowing for more precise temperature control.

In the present invention, a connector 2 at the tip of a current-carrying cable 9 is connected to an electric heating rod 1 that is wrapped around the hair and fixed. At this time, as shown in FIG. 2(A), when the two are connected with the current-carrying cable 9 extending upward, a rotating force is applied to the connected portion due to gravity. At this time, if the connecting portion between the two is merely magnetically attached and cannot be rotated, stress will be applied to the connecting portion, increasing the possibility that the connection between the two will be disconnected. On the other hand, in the present invention, the connector 2 is rotated with respect to the heating rod 1 while the connector terminal 20 and the rod terminal 10 are kept connected to each other so that the connector terminal 20 and the rod terminal 10 can conduct electricity. can move. This relieves the stress applied to the connection portion.

Furthermore, in this embodiment, the central convex portion 17a of the electric heating rod 1 is loosely inserted into the center of the connector base 41, so that the connector 2 and the energizing cable 9 are It is held in a form that is easy to rotate around the center axis, further improving the flexibility of the connection.

FIG. 5 shows a modification of the above embodiment. In this example, the terminals 21, 22, 23 of the connector 2 are always biased in the distal direction in order to keep the contact pressure constant. The terminals 21, 22, and 23 are biased by a push spring 31. In the illustrated example, a coil spring is used, but other metal springs such as a plate spring may be used, and other elastic bodies such as synthetic resin or rubber may also be used. In addition to the embodiments described above, an annular terminal is arranged on the connector 2 side, and a point or surface contact terminal or a terminal biased by a push spring 31 as shown in FIG. 5 is arranged on the electric heating rod 1 side. You may use it however you like.

1 : Electric heating rod 2 : Connector 2a : Center part 2b : Peripheral convex part 4 : Operation control part 9 : Current-carrying cable 10 : Rod terminal 11 : Outer annular terminal 12 : Inner annular terminal 13 : Center terminal 14 : Casing 15 : Heater 16 : Temperature sensor 17 : Rod side connection part 17a : Central convex part 17b : Peripheral part 17c : Outer wall part 18 : Magnetized part 19 : Magnetized part 20 : Connector terminal 21 : Outer terminal 22 : Inner terminal 23 : Center terminal 31 : Push spring 41 : Connector base 42 : Connector side connection part 43 : Rotation connection part S : Treated person

Claims (4)

The hair treatment method includes: providing an electric heating rod around which hair is wound; and providing a power supply connector that is detachably connected to the electric heating rod;
The electric heating rod includes a heater that generates heat when electricity is applied thereto, and a casing that liquid-tightly covers the heater.
The casing of the electric heating rod is provided with a rod terminal connectable to the connector,
The connector has a connector terminal at a tip end which is electrically connectable to the rod terminal, and a conductive cable at a base end,
the connector has a connector-side connecting portion at a tip, the connector-side connecting portion has the connector terminal at a tip,
The casing of the electric heating rod includes a rod-side connection portion that is in a rotatable engagement with the connector-side connection portion, and the rod-side connection portion includes the rod terminal,
The connector-side connecting portion and the rod-side connecting portion are provided with a magnet connecting mechanism that enables detachable connection by magnetic force,
A connection structure for an electric heating rod for treating hair, characterized in that the connector side connection portion is held rotatably relative to the rod side connection portion while maintaining an electrically conductive connection state between the connector terminal and the rod terminal. The rod-side connection portion includes a central convex portion having a cylindrical shape, and a peripheral edge portion around the proximal end of the central convex portion,
The rod terminal includes three terminals, a center terminal, an inner annular terminal, and an outer annular terminal arranged concentrically, and the center terminal and the inner annular terminal are arranged at the distal end surface of the central convex portion, the outer annular terminal is arranged on a plane of the peripheral edge;
A magnetic attachment part forming one side of the magnetic connection mechanism is arranged behind the outer annular terminal and inside the peripheral edge part,
The connector-side connection portion includes a central portion forming a cylindrical recess into which the central convex portion is inserted, and a peripheral convex portion on the outer periphery of the central portion,
The connector terminal includes three terminals, a shaft-shaped central terminal, a shaft-shaped inner terminal, and an annular outer terminal, arranged concentrically,
The central terminal and the inner terminal are erected on the bottom surface of the central portion, and the outer terminal is arranged annularly on the tip surface of the peripheral convex portion,
The connection structure for an electric heating rod for hair treatment according to claim 1, wherein a magnetically attached part forming the other part of the magnetic connection mechanism is arranged behind the outer terminal and inside the peripheral convex part. . The connector includes a connector base to which the current-carrying cable is connected to the base end, and a connector-side connection portion fixed to the connector base at an angle and unrotatable. The connection structure for an electric heating rod for hair treatment according to claim 1 or 2. The connector includes a connector base to which the current-carrying cable is connected to the base end, and the connector-side connection part that is movably connected to the connector base via a rotating connection part whose angle is adjustable. The connection structure for an electric heating rod for hair treatment according to claim 1 or 2.

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