JP2009095441A - Heating rod for permanent wave - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating rod for permanent waves which is lightweight and permits a rod base material to be uniformly heated. <P>SOLUTION: A nearly cylindrical heating member 20 is engaged inside a nearly cylindrical rod base material 10. A resistance circuit 21 is formed on the surface of the heating member 20 in the form of a tapestry. One end of the heating member 20 has a sensor storage section 22 radially inwardly concavely provided in the form of a groove. The sensor storage section 22 stores a thermocouple 23 and a thermistor 24, and a pin 25 is attached as to thrust out toward the shaft center from the sensor storage section 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a permanent heating rod.

  When performing a permanent at a barbershop, first shampoo the hair and then wrap the rod around the hair. Then, a permanent solution is applied to the hair, and the hair is heated for a certain time to promote the reaction of the permanent solution. After making the hair into a desired shape in this way, the rod is removed and shampooed again, and the hair is trimmed with a dryer or the like to complete the permanent treatment.

  As a method of heating hair wound around a rod, a heating rod method is known in which an electric heater is built in the rod and the rod is heated by flowing an electric current from an external power source to the electric heater. Such a heating rod method has the advantage that less manpower is required and labor saving is possible. It is also possible to control the temperature of the rod by adjusting the current flowing to the electric heater, and it is possible to finely control the degree of perm.

  However, when the electric heater is built in the rod, there is a problem that the rod becomes heavier and the hair of the person to be treated is pulled and uncomfortable, and it is difficult for the person to handle the rod.

  For this reason, an electric heater built-in type permanent heating rod that has been reduced in weight has been proposed (Patent Document 1). In this permanent heating rod, as shown in FIGS. 8 and 9, a flexible heating film 91 provided with an electric heater 90 is rolled and inserted into a hollow cylindrical rod base material 92. The heating film 91 can be rolled round for flexibility, and spreads along the inner peripheral wall in the rod base 90 by its own elastic force. For this reason, the heat of an electric heater is directly transmitted to a rod base material, and a rod base material can be heated. In addition, since the heating film 91 can be made extremely thin using a polyamide resin or the like having excellent heat resistance, the weight of the permanent heating rod incorporating the electric heater can be reduced.

JP 2004-290562 A

  However, in the heating rod for permanents of the above-mentioned patent document 1, since the heating film only spreads along the inner peripheral wall in the rod base material by its own elastic force, it can be sufficiently adhered to the inner peripheral wall of the rod base material. It was difficult. In addition, the force that the heating film tries to spread in the rod base material is not uniform, so the heating film spreads in a distorted form, and it is easy to create a non-uniform gap between the inner wall of the rod base material and the heating film. There was a possibility that rapid and uniform heating of the rod base material could not be performed. Furthermore, even if the heating film spreads evenly within the rod base material, the internal heating film will be displaced from its normal position due to the impact when the permanent heating rod is dropped on the floor or applied to an object. Therefore, there is a possibility that heating of the rod base material quickly and uniformly cannot be performed.

A permanent heating rod according to a first aspect of the present invention has been made to solve at least one of the above problems, and has a rod base and an outer peripheral surface aligned with the inner peripheral surface of the rod base, And a heating member provided with an electric heater on the outer peripheral surface, and the heating member is mounted in the rod base material.
Here, the term “alignment” refers to a state in which there is almost no gap between the inner peripheral surface of the rod base and the outer peripheral surface of the heating member, or a state in which minute gaps exist uniformly. Moreover, although it is preferable that the inner peripheral surface of a rod base material and the outer peripheral surface of a heating member align entirely, partial alignment may be sufficient. Since the hair is wound only around the central portion of the heating rod, it is preferable that the inner week surface of the rod base material and the outer peripheral surface of the heating member are aligned at least in the central portion in the axial direction.

  In the permanent heating rod according to the first aspect of the present invention, since the heating member having the electric heater provided on the outer peripheral surface thereof is attached to the inner peripheral surface of the rod base, the heat generated from the electric heater is directed toward the rod base. Is communicated quickly. Furthermore, since the heating member fitted to the rod base has an outer peripheral surface that matches the inner peripheral surface of the rod base, it is possible to suppress the occurrence of an irregular gap between the rod base and the heating member. The heat from the electric heater is transferred to the rod base material quickly and uniformly. Further, even if the rod is dropped on the floor or applied to an object and an impact is applied, the heating member is not easily displaced from the normal position.

In addition, manufacture of a heating rod becomes easy by employ | adopting the structure which provides a heater in the outer peripheral surface of a heating member, and attaches this heating member in a rod base material.
A heater may be provided on the inner peripheral surface of the rod base material, and an inner peripheral member may be attached to cover the heater. Further, when the rod base member, the heater, and the inner peripheral member as the outer peripheral member are separated from each other, when the outer peripheral member and the inner peripheral member are fitted, a heater may be interposed therebetween.
That is, another aspect of the present invention is defined as follows.
A permanent heating rod, wherein an electric heater is disposed between the outer peripheral member and the inner peripheral member in a rod body in which an inner peripheral member is mounted in the outer peripheral member.
As described above, even when the electric heater is separated from the inner peripheral member and disposed between the outer peripheral member and the inner peripheral member, the heat generated from the electric heater is quickly transmitted toward the rod base material. In addition, since the electric heater is disposed between the outer peripheral member and the inner peripheral member, the heating member is not easily displaced from the normal position even if an impact is applied by dropping the rod onto the floor or hitting an object.
When the inner peripheral member is formed of a material having spring elasticity such as resin, and the inner peripheral member is fitted to the outer peripheral member in a state of being snap-fitted, the electric heater is firmly attached to the outer peripheral member by the elastic force of the inner peripheral member. It becomes harder to slip.

  In the permanent heating rod of the second aspect of the present invention, at least one end of the outer peripheral surface of the heating member is fixed to the inner peripheral surface of the rod base material. An electric heater is disposed on the outer peripheral surface of the heating member, but the performance of the heating rod itself is not affected even if the electric heater is not present at both ends thereof. This is because the hair is not wound around the end of the heating rod. Moreover, since it becomes easy to apply the jig | tool for fixation in both ends, the fixing operation | work with a rod base material and a heating member becomes easy.

  The fixing method is not particularly limited, and a welding method using ultrasonic waves or high-frequency heating, a screwing method, a method using a stapler, a bonding method using an adhesive, or the like can be used. Among these, the method by welding is preferable because it is easy and has a strong bonding force.

In the permanent heating rod according to the third aspect of the present invention, the inner peripheral surface of the rod base material is enlarged in diameter from the central portion toward the end. Since the inner peripheral surface of the rod base material and the outer peripheral surface of the heating member are aligned, the central portion of the rod base member having the smallest diameter becomes a wedge and is mounted in the rod base member. It becomes difficult for the heating member to fall off from the rod base material, and it is difficult for displacement to occur.
If the rod base material is a cylindrical member having a uniform thickness, the outer peripheral surface of the rod base material (that is, the outer peripheral surface of the heating rod) is also enlarged from the central portion toward the end. If the heating rod having such a configuration is used, the hair is concentrated and wound around the central portion. When no heater is present at the end of the heating rod (see the second aspect), heating unevenness on the hair can be prevented in advance.

  In the permanent heating rod of the fourth aspect of the present invention, the temperature sensor is held by the heating member inside the rod base material. The temperature sensor is preferably in contact with the inner peripheral surface of the rod base material or disposed in the vicinity thereof. If it is like this, a temperature sensor will be arranged in the position near a rod base material, and when performing temperature control of a rod base material using a temperature sensor, the temperature of a rod base material can be detected correctly. it can.

  In the permanent heating rod according to the fifth aspect of the present invention, the heating member is a cylindrical member, and a sensor storage portion for storing the temperature sensor is formed in the inner diameter direction. If the heating member is cylindrical, the weight of the rod can be reduced. In addition, since the sensor housing is formed in the inner diameter direction of the heating member, the temperature sensor is disposed at a position very close to the rod base material, and the temperature detection of the rod base material using the temperature sensor is accurately performed. It can be carried out. In addition, by storing the temperature sensor in the sensor storage unit, it is possible to reliably prevent interference of the permanent liquid or the like with the temperature sensor.

In the permanent heating rod of the sixth aspect of the present invention, a pin protrudes from the sensor storage portion. If this is the case, the electrical connection between the electric heater and the external power supply and the electrical connection between the temperature sensor and the external control circuit are provided protruding from the sensor housing even if the inside of the sensor housing is isolated from the outside. Can be done via a pin.
This pin functions as an output terminal for a signal from the temperature sensor, and can also be connected to an electric heater to function as a power supply terminal for the electric heater.

In this case, it is preferable that the rod base member and the heating member are cylindrical members and are fitted with the same shaft core, and are eccentric from the shaft core so that a pin protrudes therefrom. . When wrapping hair around a permanent heating rod, the hair is usually fixed with a rubber band so that the hair does not come off, and a rubber band is hung on both ends of the permanent heating rod. In such a case, if the pin is eccentrically projected from the shaft core, the rubber band and the pin can be prevented from interfering with each other, so that the rubber band can be easily applied. Therefore, in the permanent heating rod according to the seventh aspect of the present invention, the rod base material and the heating member are cylindrical members and are fitted with the same shaft core, and are eccentric from the shaft core so that the pin is It was decided that it was protruding.
In this specification, “fitting” refers to a state in which a heating member (inner peripheral member) is fitted to a rod base material (outer peripheral member), and both are not substantially displaced in the circumferential direction and the axial direction. It includes a state of shifting in the circumferential direction and / or the axial direction. In the former state, the rod base material and the heating member may or may not be fixed by a method such as welding. In the latter state, it is necessary to fix the rod base material and the heating member.

  In the permanent heating rod of the eighth aspect of the present invention, the rod base material and the heating member are cylindrical members, the heating member is shorter than the rod base material, the inner peripheral surface of the heating member, the heating member Further, a cover member for covering the inner peripheral surface exposed from the heating member in the end surface and the rod base material is further provided. If it is like this, the electric heater provided in the outer peripheral surface of the heating member will be in the state sealed by the cover member, and permeation liquid and water approaching to an electric heater can be prevented. For this reason, corrosion of the electric heater can be prevented and leakage can be prevented.

  A permanent heating rod according to a ninth aspect is a bottomed or bottomless cylindrical shape, and is provided so as to protrude from the end of the rod main body toward the axial center of the rod main body. A permanent heating rod comprising a pin for supplying electric power to the electric heater, wherein the pin is eccentric from the axis of the rod body.

  In the permanent heating rod according to the ninth aspect defined as described above, the rod body incorporating the electric heater has a bottomed or non-bottomed cylindrical shape, so that the weight of the rod can be reduced. In addition, the electrical connection between the electric heater and the external power source, and the electrical connection between the temperature sensor and the external control circuit are performed via a pin protruding from the end of the rod body in the axial direction of the rod body. be able to. In addition, since the pin is protruded from the axis of the rod body, if the rubber band is hung on both ends of the rod and the hair wrapped around the rod is fastened, the rubber band and the pin will interfere. Can be avoided, and it becomes easy to hang a rubber band.

  If the pin for supplying electric power to the electric heater protrudes from the end of the rod body in the axial direction of the rod body and is eccentric from the axis of the rod body, the pin protrudes. The direction in which the contact is made may be parallel to the axis or may be inclined with respect to the axis. If the direction in which the pin protrudes is parallel to the shaft core, the pin will not jump out outward from the surface extending the outer peripheral surface of the rod body, and when winding hair around the rod body, The pin is suitable because it does not easily interfere with work.

Hereinafter, embodiments that further embody the present invention will be described with reference to the drawings.
Example 1
As shown in FIGS. 1 and 2, the permanent heating rod according to the first embodiment has an outer diameter slightly smaller than the inner diameter of the rod base 10 inside the substantially cylindrical rod base 10 that forms the outer shell. A cylindrical heating member 20 is fitted. Both ends of the heating member 20 are fixed to the rod base 10 by high frequency heating. In addition, in order to firmly fix the rod base material 10 and the heating member 20, an adhesive is used, the heating member 20 and the rod base material 10 are welded, a stapler or an eyelet is used, a screw and a nut are used. Or may be fixed.

The rod base material 10 is made of a material having excellent heat resistance and high mechanical strength such as polycarbonate. Further, at both ends of the rod base material 10, there are provided rubber stoppers 10a having irregularities for hanging a rubber band for hair clip.
One end of the rod member 10 may be closed. That is, a bottomed rod base material can be employed.

The heating member 20 is made of a material having excellent heat resistance, such as polyamide, and a resistance circuit 21 as an electric heater is formed on the surface in a spelled and folded shape. As a material constituting the resistance circuit, a metal such as a nickel-chromium alloy, carbon, or the like can be used. The resistor circuit can be patterned by a printing method using a carbon paste or a metal paste, a sputtering method, a vapor deposition method, a plating method, an etching method, or the like. In order to protect the resistance circuit, a protective film such as polyimide may be formed by coating or pasting.
As long as the outer peripheral surface of the heating member is aligned with the inner peripheral surface of the rod base material, a bottomed or bottomless cylindrical shape, a hollow shape, or a solid shape can be adopted.

  On one end side of the heating member 20, a sensor housing portion 22 extending in a groove shape in the axial direction is recessed in the radially inward direction. The end surface of the sensor housing portion 22 is closed and the pin 25 passes therethrough. Thereby, when the heating member 20 is fitted to the rod base material 10, the upper opening of the sensor housing portion 22 is closed by the rod base material 10, and the inside of the sensor housing portion 22 is isolated from the outside. A thermocouple 23 and a thermistor 24 are housed in the sensor housing portion 22, and the pins 25 are arranged in parallel with the axis of the rod body from the sensor housing portion 22 and from the shaft core of the rod base 10 to the outer periphery. It protrudes eccentrically to the side. The pin 25 is connected to the resistance circuit 21, the thermocouple 23, and the thermistor 24, respectively. By connecting the pin 25 and a permanent device (described later) with a cable, it is possible to supply power to the permanent heating rod and transmit a detection signal from the thermocouple 23.

FIG. 3 is a block diagram of a permanent device 70 using the permanent heating rod of the first embodiment.
The permanent device 70 is provided with a terminal board 74 having connection ports 75 [1], 75 [2], 75 [3]. The plurality of permanent heating rods 20 [1], 20 [2], 20 [3]... Are connected to connection ports 75 [1], 75 [2], 75 [3].
In FIG. 3, [1], [2], etc. attached to each reference numeral are assigned for convenience of description in order to distinguish a plurality of members, and even if these numbers are different, the structure of each member Are the same.

  As described above, the pin 25 provided on the heating rod 20 [1] has a signal transmission wiring of the thermocouple 23 and a wiring for supplying power to the resistance circuit 21 via the thermistor 24. It has been subjected. The thermistor 24 is connected in series to the resistance circuit 21 and functions as a safety device that disconnects the circuit when an overcurrent is supplied.

  The cable 80 includes a signal line 82 for transmitting the signal of the thermocouple 23 and a power supply line 83 for supplying power between the connectors 81 and 84 for connecting to the pin 25 and the connection port 75 [1]. It has a structure connected with. The signal line 82 and the power supply line 83 are each composed of two lines including the ground. However, in order to avoid complication of the drawing, each of the signal line 82 and the power supply line 83 is illustrated by one line in FIG.

  The permanent device 70 is provided with a power supply circuit 78 for supplying power to the heating rod 20 and a switching circuit 76 for turning on / off the supply of power. In the switching circuit 76, switching elements 77 [1], 77 [2], 77 [3] such as transistors are prepared. The power supply lines 83 connected to the connection ports 75 [1], 75 [2], 75 [3]... Of the terminal board 74 are switching elements 77 [1], 77 [2], 77 [3], etc., respectively. It is connected to the.

  The permanent device 70 is also provided with a control circuit 73 for controlling the heating of the heating rod 20. The control circuit 73 is a microcomputer having a CPU, a RAM, and a ROM therein, and outputs a control signal to the switching circuit 76 in accordance with a control program prepared in advance and stored in the ROM, and each switching element 77 [1]. , 77 [2], 77 [3], etc. can be turned on / off to control heating of the heating rods 20 [1], 20 [2], 20 [3].

The heating temperature of the heating rod 20 can be set by the user by operating the operation panel 72 while looking at the indicator 71.
In order to control this heating, the signal lines 82 connected to the connection ports 75 [1], 75 [2], 75 [3]... Of the terminal board 74 are connected to the control circuit 73, respectively. The control circuit 73 detects the temperature of each heating rod 20 via the signal line 82 and controls the supply of electric power so that the temperature falls within a predetermined temperature range with respect to the temperature set by the user. .

Next, how to use this heating rod will be described.
First, rod paper (not shown) is wound around the outer peripheral surface of the rod base material 10, and hair is wound around the outer peripheral surface. Then, the rubber band is stretched in the axial direction of the rod base material 10 and is hooked and fixed to the rubber stopper 10a with the hair sandwiched therebetween. FIG. 4 shows a state where the rubber band is suspended.
Next, after applying the permanent liquid, the pin 25 is connected to the power source 26 to supply power. Thereby, a voltage is applied to the resistance circuit 21 and heat is generated.

  An electromotive force corresponding to the temperature is generated in the thermocouple 23, and the electromotive force is transmitted as a signal to the control circuit 73. The control circuit 73 controls the switching circuit 76 based on the signal. That is, when the temperature corresponding to the electromotive force of the thermocouple 23 is higher than a predetermined temperature, the switching element 77 connected to the thermocouple 23 is turned off and the supply of power to the resistance circuit 21 is stopped. When the temperature corresponding to the electromotive force of the thermocouple 23 is lower than a predetermined temperature, the switching element 77 connected to the thermocouple 23 is turned on to continue supplying power. In this way, on / off control is performed so that the rod base material 10 is in a predetermined temperature range. Further, the control circuit 73 can change a predetermined temperature range in accordance with an input from the operation panel 72. Further, the control circuit 73 can collectively control a group of a plurality of heating rods.

  In this way, the hair to which the permanent liquid is applied is heated by the heating rod, and the permanent is applied. After heating the hair for a predetermined time, the rubber band is removed, the heating rod is removed, the hair is washed, dried, and the hair is dressed, and the permanent treatment is completed.

  In the heating rod for permanents of Example 1, since the heating member 20 is hollow, the heating rod for permanents is lightweight. Moreover, since the outer peripheral surface of the heating member 20 is closely fitted to the inner peripheral surface of the cylindrical rod base material 10, even if an impact is applied by dropping the heating rod on the floor or hitting it against an object The heating member 20 is not easily displaced from the normal position. Furthermore, since the resistance circuit 21 is in close contact with the rod base material 10, heat generated from the resistance circuit 21 is quickly and uniformly transmitted to the rod base material 10 toward the rod base material 10.

  Moreover, since the thermocouple 23 is accommodated in the accommodating portion 22 adjacent to the rod base material 10, the thermocouple 23 generates an electromotive force that accurately reflects the temperature of the rod base material 10, and the temperature of the heating rod Control can be performed accurately. Furthermore, since the connecting pin 25 for supplying power to the resistance circuit 21 protrudes in the axial direction of the rod base 10 and is eccentric from the axial center of the rod body, the rubber band 28 and the pin 25, the rubber band 28 can be easily hooked, and the work efficiency can be improved. In addition, since the direction in which the pin 25 projects is parallel to the axis, the pin is in the inner diameter direction from the surface extending the outer peripheral surface of the rod body, and when the hair is wound around the rod body, Pins are unlikely to interfere with work.

(Example 2)
As shown in FIG. 5 c, the permanent heating rod of Example 2 has a taper shape in which the inner diameter of the rod base 30 is slightly increased from the central portion toward both ends, and the heating member 40. Also has an outer peripheral shape that matches the inside of the rod base 30. Other configurations are the same as those of the permanent heating rod of the first embodiment shown in FIG. 2, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 5a and 5b, the permanent heating rod of Example 2 is automatically pushed by pressing the heating member 40 into the inside of the rod base 30 and inserting the heating member 40 while deforming the tip of the heating member 40. It can be fitted at a predetermined position. In order to perform such a forced fitting operation, it is preferable that the rod base material and / or the heating member deform with spring elasticity. Therefore, it is preferable to form a rod base material and / or a heating member in a cylindrical shape with a resin material having spring elasticity. For this reason, the efficiency of the assembly work at the time of manufacture becomes favorable. Further, the heating member 40 fitted in the rod base material 30 is very difficult to come off from the rod base material 30, and it is difficult to cause a positional shift.

  As shown in FIG. 6, the permanent heating rod of Example 3 is a cylindrical weld made of a heat-resistant resin such as nylon or polycarbonate that is welded inside the heating member 20 of the permanent heating rod of Example 1. A cover 50 is inserted. A cutout 51 is provided at a position that aligns with the pin 25 of the welding cover 50. As shown in FIG. 7, the welding cover 50 is longer than the heating member 20, and both ends of the welding cover 50 are welded to the rod base material 10 by an ultrasonic welding machine.

(Example 3)
In the permanent heating rod according to the third embodiment, the heating member 20 is covered with the welding cover 50 and is in a hermetically sealed state, so that no permanent liquid or water adheres to the resistance circuit 21. For this reason, corrosion of the resistance circuit 21 is prevented, and the life of the heating rod is greatly extended. Also, leakage can be prevented.
The welding cover only needs to cover at least the inner peripheral surface of both ends of the heating member 20, the end surface and the inner peripheral surface exposed from the heating member on the rod base material.

  The permanent heating rod of the present invention can be used in the beauty industry and beauty equipment manufacturing industry.

FIG. 3 is an exploded perspective view of the permanent heating rod according to the first embodiment. 3 is a cross-sectional view of a permanent heating rod of Example 1. FIG. 1 is a block diagram of a permanent device using a permanent heating rod of Example 1. FIG. It is a side view in the state where the rubber band was put on the heating rod for permanents of Example 1. 6 is a cross-sectional view showing a method for manufacturing a permanent heating rod of Example 2. FIG. 4 is an exploded perspective view of a permanent heating rod of Example 2. FIG. 4 is a cross-sectional view of a permanent heating rod of Example 2. FIG. It is a disassembled perspective view of the conventional heating rod for permanents. It is a perspective view of the conventional heating rod for permanents.

Explanation of symbols

10, 30 ... Rod base material (rod body)
20, 40 ... Heating member 21 ... Resistance circuit (electric heater)
22 ... Sensor housing part 25 ... Pin 23 ... Thermocouple (temperature sensor)
50. Cover member

Claims (11)

A rod substrate;
A heating member having an outer peripheral surface aligned with the inner peripheral surface of the rod base material and provided with an electric heater on the outer peripheral surface;
A permanent heating rod, wherein the heating member is mounted in the rod base material. The rod according to claim 1, wherein at least one end of the outer peripheral surface of the heating member is fixed to the inner peripheral surface of the rod base material. The rod according to claim 1, wherein the rod base is expanded in diameter toward an end. The rod according to any one of claims 1 to 3, wherein a temperature sensor is held by the heating member inside the rod base material. The rod according to any one of claims 1 to 4, wherein the heating member is a cylindrical member, and a sensor storage portion for storing the temperature sensor is formed in an inner diameter direction. The rod according to claim 5, wherein a pin protrudes from the sensor storage portion. The rod base material and the heating member are cylindrical members, and are fitted with the same shaft core, and the pin is protruded from the shaft core. Item 7. The rod according to item 6. The rod base material and the heating member are cylindrical members, and the heating member is shorter than the rod base material, and the inner surface of the heating member, the end surface of the heating member, and the rod base material are displayed from the heating member. The rod according to any one of claims 1 to 7, further comprising a cover member that covers the protruded inner peripheral surface. A bottomed or bottomless cylindrical body with a built-in electric heater;
A permanent heating rod comprising: a pin projecting from the end of the rod body in the axial direction of the rod body and supplying power to the electric heater;
The permanent heating rod, wherein the pin is eccentric from an axis of the rod body. 10. The rod according to claim 9, wherein the pin is provided so as to protrude in parallel with an axis of the rod body and eccentrically from the axis of the rod body toward the outer peripheral side. A permanent heating rod, wherein an electric heater is disposed between the outer peripheral member and the inner peripheral member in a rod body in which an inner peripheral member is mounted in the outer peripheral member.

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