U.S. patent application number 15/010506 was filed with the patent office on 2016-08-11 for hair straightener.
The applicant listed for this patent is Mark WU. Invention is credited to Mark WU.
Application Number | 20160227898 15/010506 |
Document ID | / |
Family ID | 53816339 |
Filed Date | 2016-08-11 |
United States Patent
Application |
20160227898 |
Kind Code |
A1 |
WU; Mark |
August 11, 2016 |
HAIR STRAIGHTENER
Abstract
A hair straightener includes a power cord, a control circuit
board, an upper shell, a bottom shell, an electric hot plate and a
heat-conductive brush head. The upper shell and the bottom shell
are fastened together with a first accommodation chamber defined
therein. The bottom shell defines an opening. The control circuit
board, the electric hot plate and the heat-conductive brush head
are accommodated in the first accommodation chamber. The
heat-conductive brush head has a heat-transfer plate attached to
the back side thereof. The electric hot plate is mounted on the
heat-transfer plate. The heat-conductive brush head has a plurality
of heat-transfer brush teeth located on the front side thereof.
Inventors: |
WU; Mark; (SHENZHEN,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
WU; Mark |
SHENZHEN |
|
CN |
|
|
Family ID: |
53816339 |
Appl. No.: |
15/010506 |
Filed: |
January 29, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A45D 6/20 20130101; A45D
2/002 20130101 |
International
Class: |
A45D 2/00 20060101
A45D002/00; A45D 6/20 20060101 A45D006/20 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 11, 2015 |
CN |
201520102446.5 |
Claims
1. A hair straightener, comprising: an upper shell and a bottom
shell fastened together with a first accommodation chamber defined
therein, said bottom shell comprising an opening located on one end
thereof, said upper shell providing an button; a control circuit
board mounted inside said first accommodation chamber; an electric
hot plate mounted inside said first accommodation chamber; a
heat-conductive brush head mounted in said first accommodation
chamber, said heat-conductive brush head comprising a front side,
an back side and a plurality of heat-transfer brush teeth forwardly
extended from the front side thereof, each said heat-transfer brush
tooth having a free end thereof extended out of said opening of
said bottom shell and terminating in a heat insulation tip, the
heat-conductive brush head having a heat-transfer plate, said
heat-transfer plate fixedly mounted on the back side of said
heat-conductive brush and fixedly supporting said electric hot
plate on a back side thereof; and a power cord; wherein said
button, said electric hot plate and said power cord are
respectively electrically coupled to said control circuit
board.
2. The hair straightener as claimed in claim 1, wherein said
heat-conductive brush head further comprises a plurality of
anti-scald brush teeth forwardly extended from the front side
thereof around the plurality of heat-transfer brush teeth.
3. The hair straightener as claimed in claim 1, further comprising
an electric hot plate gland cover disposed inside said first
accommodation chamber and fixedly covered on the back side of said
heat-conductive brush head; said electric hot plate is set between
said electric hot plate gland cover and said heat-conductive brush
head.
4. The hair straightener as claimed in claim 3 further comprising a
heat insulation cover disposed inside said first accommodation
chamber and connected with said heat-conductive brush head to
define a second accommodation chamber therein; said heat-transfer
plate, said electric hot plate and said electric hot plate gland
cover are accommodated in said second accommodation chamber.
5. The hair straightener as claimed in claim 1, wherein said upper
shell comprises an ornamental frame mounted around the periphery
thereof; said button is fixedly mounted on said ornamental
frame.
6. The hair straightener as claimed in claim 1, further comprising
a temperature indicator and a temperature probe, wherein said
temperature probe is mounted in said heat-transfer plate and
electrically coupled to said control circuit board; said upper
shell comprises a groove located on an outside wall thereof; said
temperature indicator is fixedly mounted in said groove of said
upper shell and electrically coupled to said control circuit
board.
7. The hair straightener as claimed in claim 1, wherein said bottom
shell has one end thereof terminating in a handheld end and
disposed remote from said opening; said heat-conductive brush head
comprises an anti-scald strip disposed adjacent to said handheld
end of said bottom shell.
8. The hair straightener as claimed in claim 1, wherein said
heat-conductive brush head and said opening respectively have an
oval shape; said heat insulation tip of each said heat-transfer
brush tooth is a silicon rubber heat insulation tip.
9. The hair straightener as claimed in claim 1, wherein said
plurality of heat-transfer brush teeth comprises multiple rows of
first said heat-transfer brush teeth and multiple row of second
said heat-transfer brush teeth, the lengths of said second said
heat-transfer brush teeth that extend out of said opening being
shorter than the lengths of said first said heat-transfer brush
teeth that extend out of said opening, each said row of said second
said heat-transfer brush teeth being disposed between two said rows
of said first said heat-transfer brush teeth.
10. The hair straightener as claimed in claim 1, wherein said
heat-conductive brush head comprises a convex surface portion
located on a front middle part thereof.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to hair styling tools and more
particularly, to a hair straightener for straightening hair.
[0003] 2. Description of the Related Art
[0004] With the progress of society, improvement of people's living
standards enhances the pursuit of beauty. In dealing with
hairstyling, some people will use a hair dryer to blow hot hair
toward hair and simultaneously straighten hair with a hairbrush,
some others directly use a hot air brush to straighten hair.
However, these two methods are still not satisfactory. To
facilitate the hair straightening, hair straightener is created. A
conventional hair straightener comprises two flat irons, heated and
hard-pressed together to heat hair, setting hair straight when
cooled down. A hair straightener achieves a better
hair-straightening effect. However, people cannot use a
conventional hair straightener to straighten one's own hair, more
particularly, one person is difficult to straighten hair on the
back side of the head by oneself and can easily miss the part of
hair that one cannot see, lowering the hair straightening effect.
Further, using a conventional hair straightener may take two to
four hours to complete hair straitening, wasting much time. On the
other hand, the use of a conventional hair straightener can cause
damage to the scalp when hard-pressing the heated flat irons to
stretch hair. When operating the heated hair straightener to heat
and stretch hair, hair may be not evenly distributed in between the
two flat irons. At this time, a thickly gathered part of hair can
be effectively stretched while the other loosely gathered part of
hair cannot be well stretched. Thus, the operator needs to
repeatedly perform the hair straightening operation to have all
hair be well straightened, causing friction damage to hair cuticle
and loss of hair shine. Further, because the two flat irons are
exposed to the outside, they can accidentally burn the user during
application.
SUMMARY OF THE INVENTION
[0005] The present invention has been accomplished under the
circumstances in view. It is the main object of the present
invention to provide a hair straightener, which avoids hair cuticle
damage and saves time on hair styling.
[0006] To achieve this and other objects of the present invention,
a hair straightener comprises a power cord, a control circuit
board, an upper shell, a bottom shell, an electric hot plate and a
heat-conductive brush head. The upper shell and the bottom shell
are fastened together with a first accommodation chamber defined
therein. The bottom shell defines an opening. The control circuit
board, the electric hot plate and the heat-conductive brush head
are accommodated in the first accommodation chamber. The
heat-conductive brush head comprises a front side, an back side and
a plurality of heat-transfer brush teeth. The heat-transfer plate
is mounted on a back side of the heat-conductive brush head. The
electric hot plate is bonded to the heat-transfer plate. The
plurality of heat-transfer brush teeth forwardly extended from the
front side of the heat-conductive brush head. Each said
heat-transfer brush tooth has a free end thereof extended out of
said opening of said bottom shell and terminating in a heat
insulation tip. The upper shell is provided with an button. The
button, the electric hot plate and the power cord are respectively
electrically coupled to the control circuit board.
[0007] Preferably, the heat-conductive brush head further comprises
a plurality of anti-scald brush teeth forwardly extended from the
front side thereof around the plurality of heat-transfer brush
teeth.
[0008] Preferably, the hair straightener further comprises an
electric hot plate gland cover disposed inside the first
accommodation chamber and fixedly covered on the back side of the
heat-conductive brush head. Further, the electric hot plate is set
between the electric hot plate gland cover and the heat-conductive
brush head. Preferably, the hair straightener further comprises a
heat insulation cover disposed inside the first accommodation
chamber and connected with the heat-conductive brush head to define
a second accommodation chamber therein. Further, the heat-transfer
plate, the electric hot plate and the electric hot plate gland
cover are accommodated in the second accommodation chamber.
[0009] Preferably, the upper shell comprises an ornamental frame
mounted around the periphery thereof. Further, the button is
fixedly mounted on the ornamental frame.
[0010] Preferably, the hair straightener further comprises a
temperature indicator and a temperature probe. The temperature
probe is mounted in the heat-transfer plate and electrically
coupled to the control circuit board. The upper shell comprises a
groove located on an outside wall thereof. The temperature
indicator is fixedly mounted in the groove of the upper shell and
electrically coupled to the control circuit board.
[0011] Preferably, the bottom shell has one end thereof terminating
in a handheld end and disposed remote from the opening. The
heat-conductive brush head comprises an anti-scald strip disposed
adjacent to the handheld end of the bottom shell.
[0012] Preferably, the heat-conductive brush head and the opening
respectively have an oval shape. The heat insulation tip of each
said heat-transfer brush tooth is a silicon rubber heat insulation
tip.
[0013] Preferably, the plurality of heat-transfer brush teeth
comprises multiple rows of first heat-transfer brush teeth and
multiple rows of second heat-transfer brush teeth. The lengths of
second heat-transfer brush teeth that extend out of the opening are
shorter than the lengths of the first heat-transfer brush teeth
that extend out of the opening. Each row of second heat-transfer
brush teeth is disposed between two rows of first heat-transfer
brush teeth.
[0014] Preferably, the heat-conductive brush head comprises a
convex surface portion located on a front middle part thereof.
[0015] When compared with the prior art design, the invention
achieves the following effects:
[0016] 1. The hair straightener of the invention uses the plurality
of heat-transfer brush teeth to brush and straighten hair in a
multi-contact manner. The plurality of heat-transfer brush teeth
are arranged into multiple rows for heating hair, facilitating hair
styling, improving hair straightening efficiency and saving time on
hair styling. A user can operate the hair straightener to
straighten hair by oneself without the help of others.
[0017] 2. When the hair straightener becomes hot and directly
touches the scalp, the rubber silicon heat insulation tips prevents
direct contact between the hot heat-transfer teeth and the scalp to
cause damage to the scalp. The silicon rubber heat insulation tips
are flexible and can be kept in direct contact with the scalp to
stimulate blood circulation and to achieve meridian clearing and
massaging without burning the scalp. The plurality of anti-scald
brush teeth are respectively extended from the front side of the
heat-conductive brush head around the plurality of heat-transfer
brush teeth, constituting a protective layer to prevent contact
burns and scalds. The anti-scald strip at the end of the
heat-conductive brush head adjacent to the handheld end of the
bottom shell prevents accidental contact of the hand with the
plurality of heat-transfer brush teeth, avoiding causing burn
injuries during operation.
[0018] 3. The temperature probe can instantly detect the
temperature of the electric hot plate and provides a corresponding
temperature signal to the control circuit board for indication on
the temperature indicator so that the user can operate the hair
straightener according to the temperature indication of the
temperature indicator. Other advantages and features of the present
invention will be fully understood by reference to the following
specification in conjunction with the accompanying drawings, in
which like reference signs denote like components of structure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is an oblique elevational view of a hair straightener
in accordance with the present invention.
[0020] FIG. 2 is an exploded view of the hair straightener in
accordance with the present invention.
[0021] FIG. 3 is an enlarged view of Part A of FIG. 2.
DETAILED DESCRIPTION OF THE INVENTION
[0022] Referring to FIGS. 1-3, a hair straightener in accordance
with the present invention is shown. The hair straightener
comprises a power cord 1, a control circuit board 2, an upper shell
3, a bottom shell 4, an electric hot plate 5 and a heat-conductive
brush head 6.
[0023] The upper shell 3 and the bottom shell 4 are fastened
together, defining a first accommodation chamber (not shown).
Further, the bottom shell 4 has an opening 7 located on one end
thereof. The upper shell 3 provides a button 11.
[0024] The control circuit board 2 is mounted inside the first
accommodation chamber.
[0025] The electric hot plate 5 is mounted inside the first
accommodation chamber.
[0026] The heat-conductive brush head 6 is mounted inside the first
accommodation chamber. The heat-conductive brush head 6 comprises a
front side (not denoted in the figure), an back side (not denoted
in the figure) and a plurality of heat-transfer brush teeth 9. The
heat-transfer plate 8 is mounted on a back side of the
heat-conductive brush head 6. The electric hot plate 5 is bonded to
the heat-transfer plate 8. The plurality of heat-transfer brush
teeth 9 forwardly extended from the front side of the
heat-conductive brush head 6. Each said heat-transfer brush tooth 9
has a free end (not denoted in the figure) thereof extended out of
said opening 7 of said bottom shell 4 and terminating in a heat
insulation tip 10.
[0027] Further, the button 11, the electric hot plate 5 and the
power cord 1 are respectively electrically coupled to the control
circuit board 2.
[0028] After understanding the structural details of the hair
straightener in accordance with the present invention, the
application of the hair straightener is explained hereinafter.
[0029] Referring to FIGS. 1-3 again, the electrical plug (not
shown) at one end of the power cord 1 is connected to an electrical
outlet (not shown) for enabling the power cord 1 to provide
electricity to the control circuit board 2. At this time, the
control circuit board 2 controls the electric hot plate 5 to
generate heat. The heat-transfer plate 8 is a metal plate of good
thermal conductivity. Heat generated by the electric hot plate 5 is
transferred through the heat-transfer plate 8 to the plurality of
heat-transfer brush teeth 9. The plurality of heat-transfer brush
teeth 9 are metal pins. When the user operates the hair
straightener to move the plurality of heat-transfer brush teeth 9
through hair like the way we comb our hair, hair is straightened.
This operation is quite simple without the help of others, and
without pulling hair hardly, creating a protective effect on hair.
Because the plurality of heat-transfer brush teeth 9 have the free
ends thereof respectively terminating in a heat insulation tip 10,
the plurality of heat-transfer brush teeth 9 will not directly
touch the skin of the head, avoiding scalding injuries.
[0030] Referring to FIG. 3, the plurality of heat-transfer brush
teeth 9 of the hair straightener include multiple rows of first
heat-transfer brush teeth (not denoted in the figure) and multiple
rows of second heat-transfer brush teeth (not denoted in the
figure). The lengths of the second heat-transfer brush teeth that
extend out of the opening 7 are shorter than the lengths of the
first heat-transfer brush teeth that extend out of the opening 7.
Further, each row of the second heat-transfer brush teeth is
disposed between two rows of the first heat-transfer brush
teeth.
[0031] Referring to FIGS. 1-3 again, the operating temperature of
the plurality of heat-transfer brush teeth 9 ranges from about
80.degree. C. to about 220.degree. C.; the plurality of
heat-transfer brush teeth 9 are preferably arranged in an
elevationally staggered manner, facilitating hair styling, and
thus, hair can be temperature-treated several times no matter from
which direction hair is getting into the gaps between the plurality
of heat-transfer brush teeth 9. According to the experimental data
obtained, the plurality of heat-transfer brush teeth 9 preferably
divided into five rows. Under this arrangement, the hair
straightening speed can be faster, greatly improving hair
straightening efficiency, and at this time, the plurality of
heat-transfer brush teeth 9 are reasonably spaced and hair will not
be heavily dragged, avoiding hair cuticle damage.
[0032] Referring to FIGS. 2 and 3 again, according to the
above-described preferred embodiment, the free ends of the
plurality of heat-transfer brush teeth 9 are respectively
terminating in a respective heat insulation tip 10. When the hair
straightener directly touches the scalp, the high temperature of
the plurality of heat-transfer brush teeth 9 can cause damage to
the scalp, the arrangement of the heat insulation tips 10 prevents
such incidents, giving protection to the scalp. The heat insulation
tips 10 can be made from plastics or silicon rubber, however,
plastic heat insulation tips are relatively harder than silicon
rubber heat insulation tips and can cause discomfort upon contact
with the scalp, and therefore, it is preferable to select silicon
rubber heat insulation tips. According to the experimental data
obtained, the silicon rubber heat insulation tips 10 can be kept in
direct contact with the scalp without burning the scalp when the
temperature of the silicon rubber heat insulation tips 10 is
maintained in the range of 40.degree. C. to 45.degree. C. Further,
according to medical knowledge, it can be certain that the silicon
rubber heat insulation tips 10 can stimulate blood circulation to
achieve meridian clearing and massaging effects upon contact with
the scalp if the silicon rubber heat insulation tips 10 have a
spherical shape.
[0033] Referring to FIGS. 2 and 3 again, the heat-conductive brush
head 6 of the hair straightener further comprises a plurality of
anti-scald brush teeth 12 respectively extended from the front side
near the border thereof around the plurality of heat-transfer brush
teeth 9. The plurality of anti-scald brush teeth 12 are arranged in
a circle, constituting a protective layer around the plurality of
heat-transfer brush teeth 9. The plurality of anti-scald brush
teeth 12 are selected from a heat-resistant inflexible material,
preventing contact burns and scalds.
[0034] Referring to FIGS. 2 and 3 again, the hair straightener
further comprises an electric hot plate gland cover 13 disposed
inside the first accommodation chamber and fixedly covered on the
back side of the heat-conductive brush head 6. The electric hot
plate 5 is set in between the electric hot plate gland cover 13 and
the heat-conductive brush head 6. In this embodiment, the hair
straightener generates heat by means of the electric hot plate 5,
enabling generated heat to be transferred through the heat-transfer
plate 8 to the plurality of heat-transfer brush teeth 9, and thus,
the electric hot plate 5 and the heat-transfer plate 8 must be kept
in contact to achieve excellent heat transfer effects. In order to
keep the electric hot plate 5 in the optimal position, the electric
hot plate gland cover 13 is affixed to the back side of the
heat-conductive brush head 6 with screws, preventing displacement
of the electric hot plate 5 in long-term use.
[0035] Referring to FIGS. 1-3 again, in use, the user needs to hold
the hair straightener with one hand. To prevent the hand comes into
contact with the upper shell 3 or the plurality of heat-transfer
brush teeth 9 to cause burn injuries, a heat insulation cover 14 is
mounted inside the first accommodation chamber. The heat insulation
cover 14 and the heat-conductive brush head 6 are connected
together, defining therein a second accommodation chamber. The
heat-transfer plate 8, the electric hot plate 5 and the electric
hot plate gland cover 13 are all disposed inside the second
accommodation chamber. The heat insulation cover 14 is made from a
good heat insulation material, minimizing transfer of heat energy
from the electric hot plate 5 to the upper shell 3. The opposite
end of the bottom shell 4 remote from the opening 7 is a handheld
end. The end of the heat-conductive brush head 6 adjacent to the
handheld end of the bottom shell 4 is bonded with an anti-scald
strip 18, preventing accidental contact of the hand with the
plurality of heat-transfer brush teeth 9 to cause burn injuries
during operation.
[0036] Referring to FIGS. 1-3 again, the heat-conductive brush head
6 preferably has an oval shape, enhancing the sense of beauty and
applicability. The opening 7 preferably has an oval shape fitting
the oval shape of the heat-conductive brush head 6. However, the
heat-conductive brush head 6 and the opening 7 can also be made in
any other shape according to actual application.
[0037] Referring to FIGS. 1-3 again, the upper shell 3 is
peripherally equipped with an ornamental frame 15. The button 11 is
fixedly mounted on the ornamental frame 15. The ornamental frame 15
achieves a decorative effect and enhances the packing tightness
between the upper shell 3 and the bottom shell 4.
[0038] Referring to FIGS. 2 and 3 again, the hair straightener of
the preferred embodiment of the invention further comprises a
temperature indicator 16 and a temperature probe (not shown). The
temperature probe is affixed to the heat-transfer plate 8. The
upper shell 3 has a groove 17 located on an outer wall thereof. The
temperature indicator 16 is fixedly mounted in the groove 17. The
temperature indicator 16 and the temperature probe are electrically
coupled to the control circuit board 2. The temperature probe
detects the temperature of the heat-transfer plate 8 and provides
the detected temperature signal to the control circuit board 2 so
that the user can instantly know the temperature of the hair
straightener through the indication on the temperature indicator 16
and start the hair straightening operation when the temperature of
the hair straightener reaches a predetermined operating temperature
range, or turn off the power supply of the hair straightener to
save power consumption when the temperature reaches a predetermined
high level.
[0039] Referring to FIG. 3 again, the heat-conductive brush head 6
of the hair straightener in accordance with the preferred
embodiment has a convex surface portion (not denoted in the figure)
located on a front middle part thereof.
* * * * *