CN109009525B - Toothbrush head and electric toothbrush - Google Patents
Toothbrush head and electric toothbrush Download PDFInfo
- Publication number
- CN109009525B CN109009525B CN201810707726.7A CN201810707726A CN109009525B CN 109009525 B CN109009525 B CN 109009525B CN 201810707726 A CN201810707726 A CN 201810707726A CN 109009525 B CN109009525 B CN 109009525B
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- toothbrush
- softening temperature
- shaping
- shaping part
- temperature
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- 238000007493 shaping process Methods 0.000 claims abstract description 93
- 239000000463 material Substances 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims description 17
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 11
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 239000004327 boric acid Substances 0.000 claims description 10
- 239000003431 cross linking reagent Substances 0.000 claims description 9
- 230000001680 brushing effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 description 28
- 230000009477 glass transition Effects 0.000 description 25
- 150000003077 polyols Chemical group 0.000 description 12
- 229920005862 polyol Polymers 0.000 description 8
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- WRECIMRULFAWHA-UHFFFAOYSA-N trimethyl borate Chemical compound COB(OC)OC WRECIMRULFAWHA-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- -1 trimethyl borate) Chemical compound 0.000 description 2
- SYBQEKBVWDPVJM-UHFFFAOYSA-N (3-ethenylphenyl)boronic acid Chemical compound OB(O)C1=CC=CC(C=C)=C1 SYBQEKBVWDPVJM-UHFFFAOYSA-N 0.000 description 1
- QWMJEUJXWVZSAG-UHFFFAOYSA-N (4-ethenylphenyl)boronic acid Chemical compound OB(O)C1=CC=C(C=C)C=C1 QWMJEUJXWVZSAG-UHFFFAOYSA-N 0.000 description 1
- KQIGMPWTAHJUMN-UHFFFAOYSA-N 3-aminopropane-1,2-diol Chemical compound NCC(O)CO KQIGMPWTAHJUMN-UHFFFAOYSA-N 0.000 description 1
- WOMTYMDHLQTCHY-UHFFFAOYSA-N 3-methylamino-1,2-propanediol Chemical compound CNCC(O)CO WOMTYMDHLQTCHY-UHFFFAOYSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- ULVXDHIJOKEBMW-UHFFFAOYSA-N [3-(prop-2-enoylamino)phenyl]boronic acid Chemical compound OB(O)C1=CC=CC(NC(=O)C=C)=C1 ULVXDHIJOKEBMW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- PJUIMOJAAPLTRJ-UHFFFAOYSA-N monothioglycerol Chemical compound OCC(O)CS PJUIMOJAAPLTRJ-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
- A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Brushes (AREA)
Abstract
The invention provides a toothbrush head and an electric toothbrush, wherein the toothbrush head comprises a toothbrush rod, bristles and a shaping part, the lower end surface of the toothbrush rod is provided with a containing groove, the bristles are connected with the toothbrush rod, the shaping part is positioned in the containing groove and made of a material with softening temperature, the shaping part is used for hardening below the softening temperature to fix a toothbrush handle and softening above the softening temperature to insert or extract the toothbrush handle, and the softening temperature is 40-100 ℃. The shaping part of the toothbrush is soft and has plasticity when the temperature is higher than the softening temperature, the toothbrush handle is tightly attached to the shaping part after being placed in the shaping part, and the shaping part is hardened when the temperature is reduced to be lower than the softening temperature, so that the toothbrush handle is embedded into the shaping part and fixedly connected with the shaping part. The toothbrush head can be adapted to various types of toothbrush handles, is convenient to replace, avoids waste, and has universality. The shaping part can be heated by common vessels such as hot water, electric hair drier, microwave oven, etc., and can be naturally cooled at normal temperature, thus being convenient for daily use.
Description
Technical Field
The invention belongs to the technical field of electric toothbrushes, and particularly relates to a toothbrush head and an electric toothbrush.
Background
Electric toothbrushes generally comprise a handle for holding the toothbrush and a brush head mounted on the handle and having bristles, which are often replaced for a long time to ensure the cleaning of the mouth and the grooves, so that the handles and brush heads of electric toothbrushes commonly used in the market are detachably connected, but because of the difference of brands and models, one type and structure of handle can only correspond to and adapt to one type and structure of brush head, and when the brush heads of different types are replaced, the brush heads have to be replaced together with the handle, which results in inconvenience and waste.
Disclosure of Invention
The invention aims to provide a toothbrush head and an electric toothbrush, and aims to solve the technical problem that a toothbrush handle of one type can only be matched with a toothbrush head of one type to cause waste in the prior art.
The present invention is achieved by a toothbrush head for coupling to a toothbrush handle, comprising a toothbrush stem having a receiving groove at a lower end surface thereof, bristles coupled to the toothbrush stem and used for brushing teeth, and a molding part positioned in the receiving groove and made of a material having a softening temperature, the molding part being used to soften above the softening temperature to insert or withdraw the toothbrush handle and harden below the softening temperature to fix the toothbrush handle, the softening temperature being 40-100 ℃.
Compared with the prior art, the invention has the technical effects that: the shaping part is soft and has plasticity when the softening temperature is higher than that of the toothbrush, the toothbrush handle can be placed in the shaping part, the shaping part can be accommodated and tightly attached to the toothbrush handle at the moment, the shaping part is hardened into a hard state when the softening temperature is reduced, and the toothbrush handle can be embedded in the shaping part and fixedly connected with the shaping part. When the toothbrush handle needs to be replaced, the shaping part is heated to be above the softening temperature again, and then the toothbrush handle is pulled out to replace another toothbrush handle. Therefore, the shaping part can adapt to and fix toothbrush handles of various structures and types, namely, the toothbrush head can adapt to toothbrush handles of various types, is convenient to replace, avoids waste and has universality. The softening temperature of the shaping part is not higher than 100 ℃, namely lower than the softening or melting temperature of common toothbrush rod materials, so that the toothbrush rod is not softened or melted when the shaping part is softened, the stability of the toothbrush head structure is ensured, and on the other hand, the softening temperature can be used for soaking the shaping part through hot water or boiling water or heating general vessels such as an electric hair drier, a microwave oven and the like to soften the shaping part, so that the toothbrush head structure is convenient and quick to use and operate; the softening temperature of the shaping part is higher than 40 ℃, namely higher than normal temperature, so that the shaping part can be naturally cooled under normal temperature after being placed into the toothbrush handle, and can be hardened and fixed, operation steps are saved, and daily use is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the embodiments of the present invention or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a toothbrush head provided in accordance with an embodiment of the present invention, including a handle;
FIG. 2 is a cross-sectional exploded view of a toothbrush head provided in an embodiment of the present invention;
fig. 3 is a sectional assembly view of a toothbrush head provided in an embodiment of the present invention.
Reference numerals illustrate:
10. a toothbrush bar; 11. a receiving groove; 12. a limit groove; 13. a slide rail; 14. a step structure; 20. brushing; 30. a shaping part; 31. a mounting groove; 32. a connection structure; 33. a limiting block; 34. a chute; 40. an end cap; 41. an end hole; 50. toothbrush handle
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. In fig. 1 and 2, the positive z-axis direction of the coordinate axis is the upper direction, and the negative z-axis direction is the lower direction.
The present invention provides a toothbrush head for attachment to a toothbrush handle 50. The toothbrush handle 50 here refers to the handle of a toothbrush, which toothbrush handle 50 has a vibration drive as well as a vibration output shaft, in particular to which the brush head is connected, for an electric toothbrush.
Referring to fig. 1 to 3, in an embodiment of the present invention, the toothbrush head includes a toothbrush bar 10 having a receiving groove 11 at a lower end surface thereof, bristles 20 coupled to the toothbrush bar 10 and used for brushing teeth, and a molding part 30 positioned in the receiving groove 11 and made of a material having a softening temperature, the molding part 30 being used to soften above the softening temperature to insert or withdraw the toothbrush handle 50 and harden below the softening temperature to fix the toothbrush handle 50, the softening temperature being 40-100 ℃. The bristles 20 are generally disposed on the side wall of the toothbrush rod 10 near the upper end surface, the molding portion 30 is formed by injection molding, the molding portion 30 is soft above the softening temperature, the molding portion may be in a viscous gel shape, may be in a plasticine shape, may be in an elastic rubber-like shape, and is not limited to the above, and may be capable of accommodating and wrapping toothbrush handles of various shapes and structures, the molding portion 30 is hardened below the softening temperature, and the toothbrush handles may be fixed in the molding portion 30.
The shaping part 30 of the present invention is soft and has plasticity above the softening temperature, the toothbrush handle 50 can be inserted into the shaping part 30, the shaping part 30 at this time can accommodate and cling to the toothbrush handle 50, the shaping part 30 becomes hard when the temperature is reduced below the softening temperature, and the toothbrush handle 50 is embedded into the shaping part 30 and fixedly connected with the shaping part 30. When the toothbrush handle 50 needs to be replaced, the shaping part 30 is heated to above the softening temperature again, and then the toothbrush handle 50 is pulled out to replace another toothbrush handle 50. Thus, the shaping part 30 can adapt to and fix the toothbrush handles 50 with various structures and types, namely, the toothbrush head can adapt to the toothbrush handles 50 with various types, is convenient to replace, avoids waste, and has universality. The softening temperature of the shaping part 30 is not higher than 100 ℃, namely lower than the softening or melting temperature of the common toothbrush rod 10 material, so that the toothbrush rod 10 is not softened or melted when the shaping part 30 is softened, the stability of the toothbrush head structure is ensured, and on the other hand, the softening temperature can be used for soaking the shaping part 30 by hot water or boiling water or heating by a hair drier, a microwave oven and other general vessels to soften the shaping part 30, so that the toothbrush is convenient and quick to use and operate; the softening temperature of the shaping part 30 is higher than 40 ℃, namely higher than normal temperature, so that the shaping part 30 can be automatically cooled under normal temperature after being placed into the toothbrush handle 50 to finish hardening and fixing, operation steps are saved, and daily use is facilitated.
In the embodiment of the present invention, the shaping portion 30 may be soaked in warm water or boiled water with a temperature higher than the softening temperature to soften, then placed in the accommodating groove 11, and then the toothbrush handle 50 is quickly inserted into the shaping portion 30, and cooled at normal temperature until the shaping portion 30 becomes hard;
the shaping portion 30 may be inserted into the accommodating groove 11 by inserting the shaping portion 30 in a hard state at normal temperature, wherein a connecting structure 32 fixedly connected with the shaping portion 30 is provided on an inner wall of the accommodating groove 11, so that the shaping portion 30 is fixedly connected with the toothbrush bar 10, and then the toothbrush bar 10 is heated by a heating vessel such as a microwave oven or the like, or the toothbrush bar 10 with the shaping portion 30 is immersed into warm water or boiled water with a softening temperature higher than the softening temperature, and the softening temperature of the toothbrush bar 10 is higher than the temperature of the immersing liquid at this time, and the toothbrush handle 50 is inserted into the soft shaping portion 30 and cooled to a hard state at normal temperature.
Referring to fig. 2, for the above-mentioned connection structure 32, the present invention provides an embodiment, the molding portion 30 and the outer wall thereof are further provided with a limiting block 33 protruding toward the axis of the accommodating groove 11, and the inner wall of the accommodating groove 11 is provided with a limiting groove 12 adapted to the limiting block 33. The limiting block 33 is in plug-in fit with the limiting groove 12, so as to prevent the shaping portion 30 from moving or rotating in the accommodating groove 11.
Referring to fig. 2 and 3, in this embodiment, the toothbrush head further includes a sliding rail 13 disposed on an inner wall of the accommodating groove 11 and protruding toward the axis and extending axially, the molding portion 30 has a sliding slot 34 adapted to the sliding rail 13, the molding portion 30 can be inserted into the accommodating groove 11 through the sliding rail 13 during assembly, and the sliding rail 13 plays a guiding and limiting role.
Preferably, the shaping portion 30 has viscosity, which is favorable for enhancing friction force between the shaping portion 30 and the groove wall of the accommodating groove 11 and between the shaping portion 30 and the toothbrush handle 50, so as to prevent the toothbrush handle 50 and the toothbrush head from shaking or rotating relatively, and the structure is more stable.
Referring to fig. 1 to 3, in the embodiment of the present invention, the shaping portion 30 is provided with a mounting groove 31 corresponding to the opening direction of the accommodating groove 11 and used for inserting the toothbrush handle 50. The mounting groove 31 can facilitate the toothbrush handle 50 to be inserted into the inside of the molding part, and can prevent glue from overflowing.
Referring to fig. 1 to 3, in the embodiment of the present invention, the toothbrush head further includes an end cap 40 disposed in the notch of the accommodating groove 11 and used for preventing the molding portion 30 from overflowing the accommodating groove 11, the end cap 40 is provided with an end hole 41, and the end hole 41 penetrates through to the mounting groove 31. After the toothbrush handle 50 is inserted into the shaping portion 30, the shaping portion 30 may overflow due to plastic deformation, and the end cap 40 is blocked at the notch of the accommodating groove 11 to prevent the softened shaping portion 30 from flowing out of the accommodating groove 11. Preferably, the aperture of the end hole 41 is slightly larger than the notch of the mounting groove 31, so that the end hole 41 can properly accommodate the overflowed molding portion 30.
The inner wall of the accommodating groove 11 is provided with an overflow preventing groove (not shown) for preventing the molding portion 30 from overflowing. When the toothbrush handle 50 is excessively large in volume, which is inserted into the mounting groove 31, the excessive overflow of the molding part 30 into the overflow preventing groove prevents the molding part 30 from pressing the end cap 40.
Referring to fig. 2, in the embodiment of the present invention, the inner wall of the accommodating groove 11 has a step structure 14, the outer wall of the shaping portion 30 is adapted to the inner wall of the accommodating groove 11, and the step structure 14 can share the pressure caused by part of the friction force to the upper portion of the shaping portion 30 during the process of inserting the toothbrush handle 50 into the mounting groove 31. The step structure 14 includes at least a first step near the notch of the accommodating groove 11 and a second step above the first step, and the diameter of the second step is smaller than that of the first step. It is known that the depth of the accommodating groove 11 is greater than the length of the toothbrush handle 50, alternatively, the portion of the shaping portion 30 located in the first step of the step structure 14 is used for inserting or fixing the toothbrush handle 50, when the shaping portion 30 is heated, only a portion of the first step of the shaping portion 30 equal to the toothbrush handle 50 is heated for inserting or extracting the toothbrush handle 50, the second step and the rest are still in a hard state because they are not heated to a softening temperature, at this time, the connection and fastening of the hard state portion and the groove wall of the accommodating groove 11 does not enable the whole shaping portion 30 to drop out or flow out, the hard state portion is not involved in fixing the toothbrush handle 50, the step structure 14 reduces the volume of the portion which is not softened, the cost is saved while the toothbrush handle 10 is fixedly connected, the flow, the displacement or deformation of the softened portion of the hard state portion of the shaping portion 30 is easy to be deformed, and the stability of the toothbrush handle 30 is prevented from being fully restrained when the toothbrush handle is in a soft state. Preferably, the mounting groove 31 is provided at a portion of the molding portion 30 located at the first step, and the radial length of the first step is longer enough to accommodate various types of toothbrush handles 50.
Further, the softening temperature is 40-80 ℃, when the shaping part 30 is heated to 40-80 ℃, the shaping part 30 becomes soft, the shaping part 30 is cooled to below 40 ℃, and the shaping part 30 becomes hard. The temperature in this region is not too high, so that the user is not scalded due to too long heating time or too high water temperature or microwave temperature, and the molding part 30 which is cooled slowly or softened due to too low temperature is prevented from flowing out of the accommodating groove 11.
Further, the shaping portion 30 is a polymer having a borate ester bond. Specifically, the molding part 30 is a polymer system with adjustable softening temperature based on boric acid ester bond crosslinking, and the system can realize the adjustment of softening temperature through simple formula adjustment, has good mechanical properties, and has the advantages of simple preparation method and strong practicability.
The softening temperature-adjustable polymer system comprises: a small molecule or oligomer containing a polyol structure, a boron-containing crosslinking agent, and a pH adjuster. Wherein the polyol contains at least two diol structural fragments, one boron atom in the boron-containing cross-linking agent is directly bonded with one carbon atom at most, and the diol structural fragments in the polyol and the boron in the boron cross-linking agent form a boric acid ester bond.
The molding part 30 made of the above material has a plasticizing temperature and a glass transition temperature, and the glass transition temperature is higher than the plasticizing temperature. The plasticizing temperature of the shaping portion 30 is a temperature at which reversible bonds in the shaping portion 30 undergo bond exchange, and may provide feasibility for shaping the shaping portion 30; the glass transition temperature of the shaping portion 30 is used to fix the shape of the shaping portion 30, and when the glass transition temperature is lower than the glass transition temperature, the shaping portion 30 is transformed into a hard state, and the key exchange process is slow, so that the polymer is fixed in shape and good mechanical properties are obtained. In the embodiment of the present invention, the glass transition temperature of the shaping portion 30 is provided by the polyol portion, and the adjustment and control of the glass transition temperature can be conveniently achieved through different types of polyol components. The reversible bond contained in the molding part 30 is a borate bond, and the bond exchange temperature is 40 ℃ or lower and lower than the glass transition temperature of the molding part 30, thereby providing good plasticity to the molding part 30 above the glass transition temperature.
In the polymer system provided by the embodiment of the invention, the polyol and the boron crosslinking agent form the borate bond, the whole network structure of the polymer system is constructed through the borate bond, the bond exchange temperature of the borate bond is lower, the pH regulator can enable the borate bond to be more stable, the exchangeable temperature of the borate bond can be determined and regulated through the selection of the polyol, and the plasticizing temperature is the bond exchange temperature of the borate reversible bond in the polymer system; meanwhile, the glass transition temperature of the polymer system is provided by a polyol part, and the regulation and control of the glass transition temperature can be conveniently realized through different types of organic matters, so that the glass transition temperature of the polymer system is higher than the plasticizing temperature finally through the selection of the polyol. Above the glass transition temperature, the polymer system can obtain lower viscosity and is easy to shape due to the exchange of boric acid ester bonds, and below the glass transition temperature, the polymer system can obtain better mechanical properties due to the slow exchange of boric acid ester bonds; the glass transition temperature of the polymer system can be adjusted in a larger range through the polyalcohol, so that the polymer system can meet the use requirements of different occasions.
For the polymer system, when heated above the glass transition temperature, and under the action of an external force, the mixture of the components of the polymer system can be deformed to a predetermined shape; after the glass transition temperature is heated, the boric acid ester bond in the system can be subjected to reversible bond exchange at the temperature, the internal stress caused by external force is dissipated, the obtained shape is a permanent shape, and the original shape cannot be restored after the external force is removed. And removing the external force, and then reducing the temperature below the glass transition temperature of the system to obtain the polymer material with the specified shape and good mechanical properties.
When the molding portion 30 having the adjustable softening temperature based on the borate bond is heated to a temperature higher than the glass transition temperature, the borate bond in the molding portion 30 undergoes a bond exchange reaction due to the plasticizing temperature of the system being lower than the glass transition temperature. At this time, macroscopic deformation of the molding part 30 is a permanent plastic deformation by the exchange reaction of the borate bond under the action of external force. When the temperature is reduced below the glass transition temperature, the boric acid ester bonds are slowly exchanged because the glass transition state limits the chain segment movement of the shaping part 30, the shape of the shaping part 30 is fixed, and the mechanical property is improved.
Preferably, the boron-containing cross-linking agent is selected from one or more of boric acid, borax, boric acid esters (such as trimethyl borate), terephthal-boric acid, 4-vinylphenylboronic acid oligomer, 3-vinylphenylboronic acid oligomer and 3-acrylamidophenylboronic acid oligomer. The amount of boron-containing crosslinking agent is calculated based on its theoretical stoichiometric ratio with the polyol component.
Preferably, the pH regulator is selected from one or more of 1, 8-diazabicyclo [5.4.0] undec-7-ene and 1,5, 7-triazabicyclo [4.4.0] sunflower-5-ene. The dosage of the pH regulator is 0.5-2 times (mass ratio) of the boron-containing crosslinking agent.
Further preferably, the boron-containing cross-linking agent is trimethyl borate, the pH regulator is 1, 8-diazabicyclo [5.4.0] undec-7-ene, and the mass ratio of the 1, 8-diazabicyclo [5.4.0] undec-7-ene to trimethyl borate is 1:1.
In the embodiment of the invention, the synthesis mode of the small molecule or the oligomer containing the polyol structure is as follows: the small molecule or oligomer containing the polyol structure is formed by the reaction of at least one of polybasic mercaptan (optional), polybasic epoxy monomer and polybasic acrylic ester monomer with at least one of 3-mercapto-1, 2-propanediol, 3-amino-1, 2-propanediol and 3-methylamino-1, 2-propanediol.
When in use, the shaping part 30 is heated to above the glass transition temperature and the plasticizing temperature, and the shaping part 30 is deformed to a preset shape under the action of external force, and the external force is removed; during deformation, the boric acid ester bond in the shaping portion 30 can be reversibly exchanged at the temperature, internal stress caused by external force is dissipated, the obtained shape is a permanent shape, and the original shape cannot be restored after the external force is removed. When the temperature is lowered below the glass transition temperature of the shaped portion 30, the shaped portion 30 having a specified shape and good mechanical properties can be obtained.
Preferably, the shaping portion 30 of different shapes can be obtained by cycling the above steps.
The glass transition temperature of the shaping part 30 can be adjusted in a large range, and the shaping part can adapt to the use requirements of different occasions.
The embodiment of the invention also provides an electric toothbrush which comprises the toothbrush head provided by each embodiment. The toothbrush head has the same structural features and functions as the toothbrush head in the above embodiments, and is not described here.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The utility model provides a toothbrush head for connect toothbrush handle, its characterized in that includes its lower terminal surface has the brush pole of holding tank, connect in the brush pole and be used for brushing teeth and be located the holding tank in just by the shaping portion that has the material of softening temperature, shaping portion is used for hardening when being less than the softening temperature in order to fix the toothbrush handle and soften when being higher than the softening temperature and put into or pull out the toothbrush handle, the softening temperature is 40-100 ℃, the inner wall of holding tank has step structure, step structure is used for sharing partial frictional force and to the pressure that upper portion of shaping portion caused, shaping portion offer with the setting direction of holding tank is unanimous and be used for inserting and establish the mounting groove of toothbrush handle, shaping portion is for the shaping portion that has the polymer of boric acid ester bond, shaping portion still is equipped with in its outer wall to the stopper that the holding tank axle center is protruding, the inner wall of holding tank has seted up with the stopper adaptation spacing groove, the toothbrush head includes the axle center of extension slide rail and the shaping portion is located the axle center.
2. The toothbrush head of claim 1, further comprising an end cap provided in the slot of the receiving groove for preventing the shaped portion from overflowing the receiving groove, the end cap being provided with an end hole penetrating to the mounting groove.
3. The toothbrush head of claim 1, wherein the softening temperature is 40-80 ℃.
4. The toothbrush head of claim 3, wherein the shaping portion is a polymer having a boron-containing cross-linking agent.
5. The toothbrush head of claim 1, wherein an inner wall of the receiving groove has an overflow preventing groove for preventing the shaped portion from overflowing.
6. An electric toothbrush comprising a brush head as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707726.7A CN109009525B (en) | 2018-07-02 | 2018-07-02 | Toothbrush head and electric toothbrush |
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| CN201810707726.7A CN109009525B (en) | 2018-07-02 | 2018-07-02 | Toothbrush head and electric toothbrush |
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| CN109009525B true CN109009525B (en) | 2024-04-12 |
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Citations (8)
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|---|---|---|---|---|
| US4227276A (en) * | 1979-02-07 | 1980-10-14 | Ginsburg Stephen J | Toothbrush with thermally deformable handle |
| DE3238035A1 (en) * | 1982-10-14 | 1984-04-19 | Ludwig Dipl.-Ing. Lang | Divided toothbrush with exchangeable brush heads |
| JP2002000353A (en) * | 2000-06-16 | 2002-01-08 | Leben Co Ltd | Plastic molding with heat deformable engaging part made of biodegradable plastic |
| JP2005144033A (en) * | 2003-11-19 | 2005-06-09 | Lion Corp | Toothbrush |
| WO2007148420A1 (en) * | 2006-06-19 | 2007-12-27 | Narutoya Co., Ltd. | Toothbrush, process for producing the same and production apparatus |
| CN103402394A (en) * | 2011-03-09 | 2013-11-20 | 葛兰素史密斯克兰消费者保健股份有限公司 | Toothbrush with flexible region in the handle |
| CN103689899A (en) * | 2012-09-27 | 2014-04-02 | 文玉兵 | Disposable sanitary toothbrush |
| CN209107642U (en) * | 2018-07-02 | 2019-07-16 | 深圳市力博得科技有限公司 | Head toothbrushes and electric toothbrush |
-
2018
- 2018-07-02 CN CN201810707726.7A patent/CN109009525B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227276A (en) * | 1979-02-07 | 1980-10-14 | Ginsburg Stephen J | Toothbrush with thermally deformable handle |
| DE3238035A1 (en) * | 1982-10-14 | 1984-04-19 | Ludwig Dipl.-Ing. Lang | Divided toothbrush with exchangeable brush heads |
| JP2002000353A (en) * | 2000-06-16 | 2002-01-08 | Leben Co Ltd | Plastic molding with heat deformable engaging part made of biodegradable plastic |
| JP2005144033A (en) * | 2003-11-19 | 2005-06-09 | Lion Corp | Toothbrush |
| WO2007148420A1 (en) * | 2006-06-19 | 2007-12-27 | Narutoya Co., Ltd. | Toothbrush, process for producing the same and production apparatus |
| CN103402394A (en) * | 2011-03-09 | 2013-11-20 | 葛兰素史密斯克兰消费者保健股份有限公司 | Toothbrush with flexible region in the handle |
| CN103689899A (en) * | 2012-09-27 | 2014-04-02 | 文玉兵 | Disposable sanitary toothbrush |
| CN209107642U (en) * | 2018-07-02 | 2019-07-16 | 深圳市力博得科技有限公司 | Head toothbrushes and electric toothbrush |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109009525A (en) | 2018-12-18 |
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