CN102150989B

CN102150989B - Portable folding type hairstyling tool

Info

Publication number: CN102150989B
Application number: CN201010136937.3A
Authority: CN
Inventors: 金憓真
Original assignee: GHD CORP
Current assignee: GHD CORP
Priority date: 2010-02-11
Filing date: 2010-03-31
Publication date: 2013-07-10
Anticipated expiration: 2030-03-31
Also published as: KR20110093149A; CN102150989A; AU2010201117A1; JP2011161201A; GB201004963D0; KR101175279B1; GB2477813A; AU2010201117B2

Abstract

A portable folding type hairstyling tool includes a casing unit which also serves as a handle, and a hairstyling unit which is inserted into or unfolded from the casing unit to be used by pivoting. The hairstyling unit includes an electric heating part for applying heat to the hair, and the casing unit includes a power source. The hairstyling unit has a rotary switch around a hinge part, thus allowing power to be supplied to the electric heating part by a power source only when the hairstyling unit is unfolded from the casing unit.

Description

Portable and collapsible type hairdressing instrument

Technical field

In general, the present invention relates to a kind of portable hairdressing instrument, more specifically, relate to a kind of portable hairdressing instrument with folding hair iron, so that the user can carry this instrument for the treatment of of hair.

Background technology

In general, hair iron is a kind ofly to heat to mould the equipment of various hair styles to hair, and is widely used in common cosmetology salon or the family, so that hair is finalized the design.

As a people out of doors the time, it is in disorder that his or her hair can become.Especially now travelling or outdoor activities are very popular, and people's hair is usually at random, therefore need the his or her hair of arrangement.

Hair style is important for woman's beauty.Therefore, need often to change hair style to adapt to different when and wheres and to show aesthetic feeling fully.So, preferably can carry the instrument for arrangement hair or change hair style.

Simultaneously, if make wet, the at random or curling hair that combs at one's hair, have many inconveniences.Therefore, in order to put hair in order, use a kind of when providing hot blast with hair-dryer to hair the method for combing hair.In this case, the user must hold hair-dryer by a hand, holds comb with the another hand simultaneously, namely must make with the hands, therefore is difficult to mould required hair style.In addition, in order to make hair be formed with wave or to make hair become straight, can use hair iron, described hair iron is constructed to make electric hot plate to be connected with the inner surface of front end by hinge joint a pair of handle together.

Conventionally, for treatment of hair, hair-dryer and hair iron that the people must carry comb, must be connected with power supply when using.These hairdressing instruments occupy sizable space, heaviness and need external power source, so portability is quite low.In addition, described instrument provides respectively, so their complicated and inconvenience uses.

Summary of the invention

Therefore, the present invention considers the above-mentioned problems in the prior art and proposes, and the purpose of this invention is to provide a kind of portable hairdressing instrument, and it has portable size and can utilize heat to be forming hair.

In order to achieve the above object, the invention provides a kind of portable and collapsible type hairdressing instrument, comprising: box body unit (casing unit), described box body unit is also as handle; And the hairdressing unit, described hairdressing unit inserts described box body unit by pivoting, or launches to use described hairdressing unit from the box body unit.The hairdressing unit comprises that the box body unit comprises power supply for the electrothermal piece to the hair heating.

Hairdressing unit for the treatment of hair can removably be attached on the described box body unit.

The hairdressing unit can have the rotating switch around hinge member, makes thus and have only when the hairdressing unit launches from the box body unit that power supply just can supply power in the electrothermal piece.

The hairdressing unit can comprise comb and hair iron.Here, comb can have toothed tooth portion and with described indented joint back together, the end of described tooth is separated from each other.In other words, comb can have a plurality of teeth and the comb back of the body, and the mode that described tooth is separated from each other with its end is arranged in one direction, and the described comb back of the body end relative with the end of a plurality of teeth that are separated from each other connects, therefore with described a plurality of indented joints together.The heating plate of hair iron can be arranged in the comb back of the body.

The hairdressing unit can further comprise back of the body lid, and described back of the body capping is facing to the comb back of the body, and by using hinge and spring to pivot, described back of the body lid is near the heating plate of the comb back of the body or away from heating plate.Extra heating plate can be to be arranged on the inner surface of back of the body lid in the face of the mode of combing the described heating plate of carrying on the back.

The hairdressing unit can comprise comb and heating plate, and described heating plate has the shape heater block corresponding with the tooth of comb.Here, a side of heating plate can be split into the tooth of comb similar, and the part of cutting apart can be installed to be corresponding with the tooth of comb.Therefore, when combing hair, the heater block of heating plate can with described tooth between hair contact, thereby heat to hair.

The hairdressing unit can comprise hair iron.In this case, hair iron can comprise two parts.Described two parts are can be by using hinge and spring to pivot close to each other or away from each other, described two parts are in hinge member place and the connection of box body unit.Heating plate can be attached on described two parts interior surface opposing.Therefore, move heating plate by hair is inserted between the heating plate and along hair, can obtain required hair style.

Description of drawings

From the detailed description below in conjunction with accompanying drawing, understand above and other objects of the present invention, feature and advantage with clearer.In the accompanying drawings:

Fig. 1 illustrates the perspective view of hairdressing instrument according to an embodiment of the invention;

Fig. 2 is the decomposition diagram of box body unit that the hairdressing instrument of Fig. 1 is shown;

Fig. 3 is the decomposition diagram that the hairdressing unit of Fig. 1 is shown;

Fig. 4 illustrates the perspective view of hairdressing instrument according to another embodiment of the present invention;

Fig. 5 is the decomposition diagram that the hairdressing unit of Fig. 4 is shown;

Fig. 6 is that illustrate can be alternately and the perspective view of attached two hairdressing unit, box body unit, and wherein, described hairdressing unit separates with the box body unit;

Fig. 7 and Fig. 8 illustrate the decomposition diagram that can replace according to the described hairdressing unit of the embodiment of the invention or the hairdressing unit that can use with the described hairdressing unit according to the embodiment of the invention; And

Fig. 9 is perspective view, shows on the hinge member of the hairdressing instrument that is arranged on Fig. 1 the rotating switch that is electrically connected with hairdressing unit and box body unit.

Specific embodiment

Hereinafter, describe embodiments of the invention with reference to the accompanying drawings in detail.

Fig. 1 illustrates the perspective view of hairdressing instrument according to an embodiment of the invention.

Portable and collapsible type hairdressing instrument is provided with the box body unit 200 that also is used as handle and inserts box body unit 200, or the hairdressing unit 300 that launches to use from box body unit 200.Hairdressing unit 300 inserts

box body unit

200 or 200 expansion from the box body unit by pivoting.In order to pivot, box body unit 200 and hairdressing unit 300 partly overlap in the vertical each other, and are engaged with each other by hinge member 220.In addition, can pull down hinge member 220 from the outside simply, and hairdressing unit 300 connects with box body unit 200 removably.

Fig. 2 is the decomposition diagram that the box body unit of Fig. 1 is shown.

Box body unit 200 comprises the box body 203 of rectangle, and when the edge was laterally seen, box body 203 was as centerbody.The middle part of box body 203 laterally has cavity along it, so that hairdressing unit 300 can insert wherein.Therefore, box body 203 has the forward and backward rectangular wall at the opposite side of described cavity.Described wall connects each other by rib, does not insert hairdressing unit 300 in order to do not hinder, and described rib is along the edge setting of narrow wall.In addition, protecgulum 202 transversely is connected with the front and back of box body 203 at it respectively with bonnet 201.Rectangular battery 204 is arranged between the preceding rectangular wall of protecgulum 202 and box body 203 and between the back rectangular wall and bonnet 201 of box body 203.

The printed circuit board (PCB) (PCB) 213 between box body 203 and the bonnet 201, the binding post 214 that is connected with PCB 213 and 215 and LED lamp 211 be arranged on described hinge member around.Pin 209, brush spring (brush spring) 208 and brush lock (brush lock) 205 are arranged on the described hinge member.Brush spring 208 is arranged on around the pin 209.Brush lock 205 is used for hairdressing unit 300 is locked in box body unit 200.Power switch 210 is set to be exposed on the lid surface of described box body.

Fig. 3 is the decomposition diagram that the hairdressing unit of Fig. 1 is shown.

Hairdressing unit 300 has the shape of comb.Therefore, present embodiment has the overall appearance of collapsible comb.When the hairdressing unit 200 launches with 200 one-tenths 180 degree angle, box body unit the time from the box body unit, the broach 3011 of bottom that is arranged on comb is similar to the broach of common comb, but the comb that is arranged on the top of comb is carried on the back 3012 and carried on the back different with the comb of common comb.In other words, the lid 303 that separates with comb is arranged on the comb back of the body 3012 tops.Comb 301 and lid 303 are bonded together by hinge arrangement, and described hinge arrangement is with different with hairdressing unit 300 articulate hinge members with box body unit 200.Described hinge arrangement is provided with secondary spring 312, to pivot.

Therefore, comb 301 and lid 303 pivot around the joint pin 3013 of described hinge arrangement, thereby make lid 303 can cover the comb back of the body 3012 fully near the comb back of the body at 3012 o'clock, and perhaps lid 303 can separate with the comb back of the body 3012 at a predetermined angle.Heating plate 307 is installed on the main body of comb 301.The part of heating plate 307 is between the main body and side cover 302 of comb 301, and the bottom exposed of heating plate 307 is at tooth 3011 places, and the flat surfaces at heating plate 307 tops is exposed to the comb back of the body 3012 places.When combing hair, the bottom that is exposed to the heating plate 307 at tooth 3011 places contacts with hair, makes hair form required shape in the oven dry hair thus.The flat surfaces of heating plate 307 is used as the heating plate of hair iron, and is used for making when contacting with hair user's hair fixing.The heating plate 307 that is arranged in the comb main body is empty at its vertical upper edge central shaft, and heater 309 is installed in the described cavity.The 309 supply electric energy from the battery 204 of box body unit to heater, and negative temperature coefficient (NTC) element 311 is installed in the position around the heater 309, controls temperature thus in case overheated.

Using method according to the hairdressing instrument of present embodiment will be described below.At first, the user locks 205 by piezo wiper, thereby makes hairdressing unit 300 200 expansion from the box body unit, thereby opens.When pressing power switch 210 buttons that are exposed to bonnet 201 places, the controller of electric current by battery 204, PCB 213, binding

post

214 and 215 and the binding post 313,314 and 315 of hairdressing unit 300 flow to NTC element 311, heater pressing piece (heater press) 310 and heater 309.If heating plate 307 is heated by heater 309, then the user can use the his or her hair of comb combing with the heating plate 307 that exposes the bottom according to required typing mode, perhaps can use the flat surfaces that is arranged on the top of the similar heating plate 307 of the heating plate of tabular hair iron.

To describe the using method of described flat surfaces below in detail.Hairdressing unit 300 comprises auxiliary lock 308, auxiliary lock 308 the hairdressing unit vertically on relative with the hinge member that is used for engage cover 303 and comb 301, and auxiliary lock 308 execution lock operation when lid 303 is in the tight state of contact of comb 301.Auxiliary lock 308 is opened and is unlocked, and with the secondary spring 312 of operation setting around hinge member, makes lid 303 and comb 301 separate thus.Hair is positioned between the flat surfaces and lid 303 of heating plate 307, applies power with hand, press lid 303 thus.Therefore, in the time of between the flat surfaces that hair is inserted in heating plate 307 and lid 303, lid 303 contacts with the comb back of the body 3012.In this state, spur naturally the hairdressing instrument make its perpendicular to lid 303 vertically, perhaps rotate described hairdressing instrument, thus hair straightening or make curly headed lightly.

In the present embodiment, under the situation that extra heating plate is not installed, heat-resistant rubber slab 304 is attached to the inner surface of lid 303.But, heating plate and heater can be arranged in the lid 303, to be used for shaping hair.The main body of lid 303 and comb 301 can be made by the synthetic resin with high-fire resistance and insulating properties, for example, such as the fluororesin of Teflon, thereby lid 303 and comb 301 can be damaged under the temperature (about 180 ℃) of heating plate.

In the hairdressing instrument of constructing as mentioned above, heating plate and heater are little, thereby therefore little power consumption makes the power consumption of portable hairdressing instrument be down to minimum.This hairdressing instrument allows the user maybe this instrument to be used interim treatment of hair as hair iron by combing hair; Hairdressing instrument of the present invention is the very simple hair iron of a kind of structure.

Because hairdressing instrument according to the present invention has the user and can carry its feature, so the safety of should be noted that.For example, for just only when hairdressing unit 300 from the box body unit 200 batteries 204 when launching power to the heating plate 307 of hairdressing unit 300, but the rotating switch of installation diagram 9.For this reason, the conduction contact point that is connected with electric device such as the battery 204 of the heater 309 of hairdressing unit 300 and box body unit 200 be installed in pivotly hinge member that hairdressing unit 300 and box body unit 200 are combined around, and in the face of hairdressing unit 300 and box body unit 200.In addition, only when hairdressing unit 300 from the box body unit 200 when launching, the conduction contact point of box body unit 200 just contacts with hairdressing unit 300 corresponding conduction contact points, thereby electric current is transmitted between the electric device of the battery 204 of box body unit 200 and hairdressing unit 300.

As shown in Figure 9, the binding post 214 of box body unit 200 is connected with PCB 213 with 215, and PCB 213 goes up the mode of exposing with the cavity in box body 203 in " a " direction (laterally) and is connected with box body 203.The binding post 313 of hairdressing unit 300,314 with 315 " b " direction (laterally) go up with facing to the mode of the PCB 213 that exposes be not connected by the surface of exposing at the comb 301 of side cover 302 coverings of the hinge side of hairdressing unit 300.Comb 301 is gone up and box body 203 connections at direction c (vertically), and fastening by joint pin.The position of described binding post is determined, thereby make when hairdressing unit 300 200 expansion and be opened for 180 when spending from the box body unit, corresponding binding post contacts with each other, and thus the battery 204 of box body unit 200 and the electric device of hairdressing unit 300 is electrically connected.

In addition, power switch 210 is arranged on the box body unit 200 in the mode that its button is exposed on the lid, can check again that thus the electric current between battery 204 and binding

post

214 and 215 transmits.In other words, only 200 launch and when pressing the button of box body unit 200, electric energy just can be fed to heater 309 from battery 204 from the box body unit when hairdressing unit 300.Under the state of the button of pressing box body unit 200, if hairdressing unit 300 folds and inserts in the box body unit, binding post disconnection connection and power switch 210 each other automatically opened so, cuts off the electric energy that is fed to heater 309 thus again.

Fig. 4 illustrates the perspective view of hairdressing instrument according to another embodiment of the present invention, and Fig. 5 is the decomposition diagram that the hairdressing unit of Fig. 4 is shown.

Be of similar shape according to the box body unit 200 of the embodiment of Fig. 4 and box body unit 200 according to the embodiment of Fig. 1.Except the shape of hairdressing unit, two embodiment are equivalent each other.Decomposition diagram with reference to Fig. 5 is described present embodiment in detail.Hairdressing unit 400 comprises the tabular hair iron with two upper and

lower box bodys

401 and 408.

Because being arranged on 415, two box bodys 401 of secondary spring and 408 around the hinge member in

box body

401 and 408 can pivot or rotate in predetermined angular range around hinge pin 209 (see figure 2)s.

Heating plate

403 and 410 is set up in 2/3 the mode that extends to each box body element length from a distance hinge member end far away, and

heating plate

403 and 410 has the flat surfaces on the interior surface opposing of box body 401 and 408.

Heater

405 and 412 is placed in the heating plate 403 that is not exposed on the external and 410 inner surface.Under the state of having settled

heater

405 and 412, by the anchor clamps 404

clamping heating plates

403 and 410 between the upper cartridge body 401 that is positioned over hairdressing unit 400 and the lower box body 408.The mat of being made by elastomeric material 407 is installed between each anchor clamps 404 and the corresponding box body, and described mat 407 provides elasticity so that each

heating plate

403 or 410 is mobile in predetermined scope.

Cover the

body cover

406 and 411 of described box body to be arranged on heating plate from the mode that extends near the position of hinge member corresponding to 1/3 position of each box body length.Lead is installed in

main body lid

406 and 411, so that binding post 416,417,418,419 and 420 and

heater

405 and 412, the fuse 413 or PTC (Positive Temperature Coefficient, positive temperature coefficient) the element (not shown) that are arranged on around the heater connect.Hinge member is provided with the slider disc 414 of rotating around joint pin and the binding post 416,417,418,419 and 420 that heater, PTC element and the fuse of hairdressing unit 400 is connected to the battery of box body unit.

Lead cap (Leg-cap) 402 and 409 is arranged on the part of described box body and described hinge member vicinity, and as lock cell, to prevent that secondary spring 415 is operated when two

box bodys

401 and 408 insert in the box body unit 200 and keep in box body unit 200.

Using method according to the hairdressing instrument of present embodiment will be described below.At first, the user is by piezo wiper lock 205, thereby makes hairdressing unit 400 200 launch and open from the box body unit.When pressing the button of the power switch 210 that is exposed to bonnet 201 places, electric current through the controller of battery 204, PCB 213, binding

post

214 and 215 and the binding post 416,417,418,419 and 420 of hairdressing unit 400 flow to

heater

405 and 412 and fuse 413., under the state that joint pin pivots, when

heating plate

403 and 410 is heated, hair is placed between the

heating plate

403 and 410 of upper and

lower box body

401 and 408, and apply power with hand at the upper and lower box body 401 of hairdressing unit 400 and 408.At this moment, hair and the electric hot plate that is plugged between the

heating plate

403 and 410 of upper and

lower box body

401 and 408 contacts with each other.In this state, when spurring the hairdressing instrument naturally and make it perpendicular to heating

plate

403 and 410 vertical, can hair straightening.

In addition, two

heating plates

403 and 410 contact with each other and with the lead cap state of contact under, when upper and

lower box body

401 and 408 inserted in the box body unit 200, brush lock 205 was lockable, and the space of depositing the hairdressing instrument is provided thus.

According to the above embodiments, a hairdressing unit and a box body unit of Fig. 3 or Fig. 5 connect.But, to describe with reference to Fig. 1 as top, described box body unit and described hairdressing unit can connect removably each other by link member.Therefore, in the embodiment as shown in the perspective view of Fig. 6, can be a box body unit 200 and prepare two hairdressing unit 300 and 400.Therefore, by being attached on the box body unit by required hairdressing unit with needs, can obtain the hair style that needs.

Simultaneously, a plurality of cavitys can be formed in the box body unit 200, so that a plurality of hairdressings unit can be tied with a box body unit, and can pull out the hairdressing unit that needs from the box body unit, to use.In this case, must be provided with two or more spaces, thereby increase the width of product inevitably.But the advantage of this structure is, do not need dismounting or attached described hairdressing unit, not deposit the hairdressing unit of pulling down when also need be in another hairdressing unit connecting with described box body unit, thereby overcome the problem of complicated and inconvenience.Preferably, adjust the link of hinge member, thereby when the button of pushing power switch, electric current only flows to from the heating plate of the hairdressing unit of box body unit expansion.Similar to the above embodiments, only when the hairdressing unit launches from the box body unit, the switch pin of hairdressing unit just contacts with the switchboard of the hinge member that is arranged on box body unit semicircle bar shaped on every side, therefore makes electric current can be sent to the hairdressing unit from the battery of box body unit.

Fig. 7 and Fig. 8 illustrate the decomposition diagram that can replace according to the described hairdressing unit of the embodiment of the invention or the hairdressing unit that can use with the described hairdressing unit according to the embodiment of the invention.

Fig. 7 illustrates the hairdressing unit of the comb shape similar to the hairdressing unit of Fig. 3.The hairdressing unit of described comb shape has the groove for the side surface at the back that heating plate 503 is installed to comb 501, and forms lid 502 to cover described groove.Heating plate 503 does not have smooth upper face, and is arranged in described groove, makes the upper end of heating plate 503 not be exposed to the upper end of the main body of comb 501.The heating plate 503 of comb shape is installed in the described groove.Heating plate 503 has the part that is equivalent to comb the planar section of the back of the body and is equivalent to broach.The part that heating plate 503 is equivalent to broach less than broach, prevents that thus heating plate 503 directly contacts with scalp when combing hair on length.The described planar section that is equivalent to comb the back of the body has groove.Heater 504 is installed in the described groove, NTC element 506 be installed in heater 504 around.Installation has the intermediate plate 505 of contact hole, so that the lead of NTC element 506 does not directly contact with heater 504, but NTC element 506 contacts with the middle part of heater 504.

The hole that joint pin 209 (see figure 2)s are passed is formed on the main body of comb 501 and lid 502, secondary spring 507 and binding post 508,509 and 510 be installed in joint pin 209 around.Connect binding post 508,509 and 510, heater 504 and NTC element 506 by the lead (not shown) that is connected with the NTC element with heater.

In order to tolerate the heat of heater 504, the vertical part of heating plate 503 is made by heat resistant plastice.Preferably, the part of the tooth that is equivalent to comb 501 of heating plate 503 is installed between the tooth of comb 501, and described part forms narrowlyer than the tooth of comb 501, prevents that thus heating plate 503 is exposed to the outside, thereby prevents that heating plate 503 from directly contacting with hand etc.

Fig. 8 shows the hairdressing unit similar to the hairdressing unit of Fig. 3.

Different with the hairdressing unit of Fig. 3, described hairdressing unit comprises and is fixed to fully the lid 602 that surrounds the comb back of the body, has replaced the lid that can pivot with respect to comb when surrounding the comb back of the body.This structure is difficult to the effect that reaches identical with tabular hair iron, described tabular hair iron uses the heating plate 605 that exposes by uncap 602 to come treatment of hair, and described structure only is used for drying hair or makes the hair bending by the direction of adjusting combing when the pulling comb passes hair.Similar to the hairdressing unit of Fig. 3, heater 603 and NTC element 604 are installed in the heating plate 605, and binding post 607,608 and 609 has been installed.

The hairdressing unit of Fig. 7 and Fig. 8 can replace the hairdressing unit of Fig. 4.When the hairdressing unit is installed in the box body unit, when optionally being used then, they can carry out the hairdressing unit identical functions with Fig. 2.

As mentioned above, the invention provides a kind of portable and collapsible type hairdressing instrument, it is constructed to make that the hairdressing unit wherein have electroheat member is easy to foldingly launch to open to insert the box body unit or to be easy to from the box body unit, has therefore reduced the size of described instrument and it has been easy to carry about with one and easy to use.

Although the preferred embodiments of the present invention are disclosed for illustration purpose, but those skilled in the art should understand that, under situation about not breaking away from as the disclosed scope and spirit of the present invention of accompanying Claim, can carry out various improvement, augment and replace the present invention.

Claims

1. portable and collapsible type hairdressing instrument comprises:

Box body unit, described box body unit are also as handle; And

The hairdressing unit, described hairdressing unit is inserted in the described box body unit by pivot, or launches to use from described box body unit,

Wherein, described hairdressing unit comprises that described box body unit comprises the battery as the power supply of described heating plate for the heating plate to the hair heating,

Wherein, described hairdressing unit comprises comb, described comb has a plurality of teeth and the comb back of the body, the mode that described tooth is separated from each other with its end is arranged in one direction, the described comb back of the body end relative with the described end of the described a plurality of teeth that are separated from each other connects, thus with described a plurality of indented joints together, in the described comb back of the body, be provided with heating plate

Wherein, described hairdressing unit further comprises back of the body lid, and described back of the body capping faces toward the described comb back of the body, and pivots around the shared hinge of described back of the body lid and described comb, thereby makes described back of the body lid near described comb or away from described comb.

2. hairdressing instrument according to claim 1, wherein, described hairdressing unit removably is attached on the described box body unit.

3. hairdressing instrument according to claim 2, wherein, described hairdressing unit comprises a plurality of functional units, described functional unit is selected as required, and described functional unit and described box body unit connect.

4. hairdressing instrument according to claim 1 and 2 wherein, is provided with a plurality of hairdressings unit, and all described hairdressing unit are all in parallel with described box body unit.

5. hairdressing instrument according to claim 1, wherein, rotating switch is arranged on the position around the hinge member, described hinge member so that the mode that the conduction contact point of described hairdressing unit contacts with the conduction contact point of described box body unit described hairdressing unit and described box body unit are engaged each other pivotly, therefore have only when described hairdressing unit launches from described box body unit, described power supply just can supply power to described heating plate.

6. hairdressing instrument according to claim 1, wherein, extra heating plate is arranged on the inner surface of described back of the body lid in the mode in the face of the described heating plate of the described comb back of the body.

7. hairdressing instrument according to claim 1, wherein, described hairdressing unit comprises heating plate, described heating plate has the shape heater block corresponding with the described tooth of described comb.

8. hairdressing instrument according to claim 1, wherein, described hairdressing unit comprises two parts, and described two parts are bonded together in mode capable of pivoting relative to each other by the hinge that shares, and in the surface that it is faced mutually of at least one in described two parts has heating plate.