CN113324850A - Method for testing bending resistance of children toothbrush - Google Patents
Method for testing bending resistance of children toothbrush Download PDFInfo
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- CN113324850A CN113324850A CN202110677175.6A CN202110677175A CN113324850A CN 113324850 A CN113324850 A CN 113324850A CN 202110677175 A CN202110677175 A CN 202110677175A CN 113324850 A CN113324850 A CN 113324850A
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- toothbrush
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- 238000005452 bending Methods 0.000 title claims abstract description 126
- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title abstract description 15
- 238000010998 test method Methods 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 description 19
- 239000005060 rubber Substances 0.000 description 19
- 239000003292 glue Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- 210000000214 mouth Anatomy 0.000 description 5
- 229920002725 thermoplastic elastomer Polymers 0.000 description 5
- 239000000499 gel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 210000003128 head Anatomy 0.000 description 3
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003699 hair surface Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
Abstract
The invention discloses a method for testing bending resistance of a child toothbrush, which comprises the following steps of: s1, fixing the toothbrush; s2, setting a stress point; s3, setting a zero point; s4, setting parameters; and S5, acquiring the bending resistance F. The invention provides a method for testing the bending resistance of a child toothbrush, which comprises the following steps of S1, fixing the toothbrush; s2, setting a stress point; s3, setting a zero point; s4, setting parameters; s5, obtaining the bending resistance F, and obtaining the bending resistance of the child toothbrush through the five steps, so that whether the bending performance of the child toothbrush meets the use requirement or not can be clearly known, and whether the child toothbrush has favorable supporting force and certain stress bending performance or not can be known.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of toothbrushes, in particular to a method for testing the bending resistance of a child toothbrush.
[ background of the invention ]
With the increasing awareness of oral hygiene, toothbrushes have evolved into different categories according to the different needs of their consumers. Toothbrush for young children, especially in the field of children 2-6 years old. Children's oral cavity is clean needs adult's assistance usually, parents are when helping children to brush teeth, can hold toothbrush afterbody position usually, therefore the toothbrush stalk portion should possess certain support nature, the children toothbrush of current market, mainly there are 2, one kind is that the stalk portion comprises the flexible glue completely, one kind is by flexible glue parcel hard skeleton, the toothbrush totally by the flexible glue parcel, the stalk portion is very soft, the adult can't have powerful support when helping children to brush teeth, can the roll during brushing teeth, children's oral cavity can not effectively be cleared up, another kind is by the toothbrush of flexible glue parcel hard skeleton, its powerful support can help adult to clear up children's teeth, however, if children are because of resisting brushing teeth, cause oral cavity injury easily. The existing children toothbrush can only know whether the toothbrush has favorable supporting force or not and also has certain stress flexibility at the same time, and a test method for the bending performance of the children toothbrush is lacked.
[ summary of the invention ]
The invention solves the technical problem that the bending performance of the existing children toothbrush is difficult to know, and provides a method for testing the bending resistance of the children toothbrush.
The invention is realized by the following technical scheme:
a method of testing the bending resistance of a child's toothbrush comprising the steps of:
s1, fixing the toothbrush on a horizontally movable test board;
s2, setting a stress point to make the stress point of the toothbrush be positioned right below a force application module of the pressure tester;
s3, setting a zero point, so that the force application module is lowered to the stress point of the toothbrush at a preset initial speed, and returning the pressure value of the pressure tester to zero when the pressure value measured by the pressure tester is a preset return-to-zero pressure value;
s4, setting parameters, namely setting the preset downward moving distance and the preset descending speed of the pressing module;
and S5, acquiring the bending resistance F, and taking the maximum pressure value measured by the pressure tester as the bending resistance F after the pressure application module descends according to the preset downward moving distance.
A method of testing bending resistance of a child' S toothbrush as described above, the bending resistance F including an upper bending resistance F1, the bristle side of the toothbrush being fixed on a test bench in step S1, the pressure measured through steps S2 to S5 being the upper bending resistance F1.
In a method of testing bending resistance of a child' S toothbrush as described above, the bending resistance F includes a lower bending resistance F2, and the bristles are set face down on a test table in step S1, and the pressure measured through steps S2 to S5 is the lower bending resistance F2.
In a method of testing bending resistance of a child' S toothbrush as described above, the bending resistance F includes a front bending resistance F3, and the bristles of the toothbrush are fixed forward on the test stand in step S1, and the pressure measured through steps S2 to S5 is the front bending resistance F3.
In a method of testing bending resistance of a child' S toothbrush as described above, the bending resistance F includes a back bending resistance F4, and in step S1, the bristles of the toothbrush are set back on the test stand, and the pressure measured through steps S2 to S5 is the back bending resistance F4.
In a method for testing bending resistance of a children' S toothbrush as described above, in step S1, the toothbrush handle is clamped and matched with the test bench, wherein the position of 30% ± 2% of the overall length of the toothbrush is the clamping position of the test bench to the toothbrush handle.
In the method for testing the bending resistance of the children' S toothbrush as described above, in step S2, the stress point is located at a distance of 10mm from the bristles from the brush head toward the brush handle.
In the method for testing the bending resistance of the children' S toothbrush as described above, in step S3, the preset initial speed is 50 mm/min.
In the method for testing the bending resistance of the toothbrush for children, in step S3, the preset zero pressure value ranges from 0.01N to 0.1N.
In the method for testing the bending resistance of the toothbrush for children as described above, in step S4, the predetermined downward moving distance is 5mm ± 0.2mm, and the predetermined downward moving speed is 50 mm/min.
Compared with the prior art, the invention has the following advantages:
the invention provides a method for testing the bending resistance of a child toothbrush, which comprises the following steps of S1, fixing the toothbrush; s2, setting a stress point; s3, setting a zero point; s4, setting parameters; s5, obtaining the bending resistance F, and obtaining the bending resistance of the child toothbrush through the five steps, so that whether the bending performance of the child toothbrush meets the use requirement or not can be clearly known, and whether the child toothbrush has favorable supporting force and certain stress bending performance or not can be known.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of the steps of a method of testing the bending resistance of a child's toothbrush;
FIG. 2 is a schematic illustration of the installation of bending resistance F1 on the test;
FIG. 3 is a schematic view of the installation of bending resistance F2 under test;
FIG. 4 is a schematic illustration of the installation of bending resistance F3 before testing;
FIG. 5 is a schematic illustration of the installation of the post-test bending resistance F4;
FIG. 6 is an exploded view of a child's toothbrush;
FIG. 7 is a partial block diagram of a children's toothbrush;
FIG. 8 is a rear view of FIG. 7;
FIG. 9 is a left side view of FIG. 7;
figure 10 is a partial block diagram of a children's toothbrush.
[ detailed description ] embodiments
In order to make the technical solutions and the advantages of the technical problems solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the terms are used for distinguishing only when they do express the ordinal order in context.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A method of testing the bending resistance of a child's toothbrush comprising the steps of:
s1, fixing the toothbrush on a horizontally movable test board;
s2, setting a stress point to make the stress point of the toothbrush be positioned right below a force application module of the pressure tester;
s3, setting a zero point, so that the force application module is lowered to the stress point of the toothbrush at a preset initial speed, and returning the pressure value of the pressure tester to zero when the pressure value measured by the pressure tester is a preset return-to-zero pressure value;
s4, setting parameters, namely setting the preset downward moving distance and the preset descending speed of the pressing module;
and S5, acquiring the bending resistance F, and taking the maximum pressure value measured by the pressure tester as the bending resistance F after the pressure application module descends according to the preset downward moving distance.
The invention provides a method for testing the bending resistance of a child toothbrush, which comprises the following steps of S1, fixing the toothbrush; s2, setting a stress point; s3, setting a zero point; s4, setting parameters; s5, obtaining the bending resistance F, and obtaining the bending resistance of the child toothbrush through the five steps, so that whether the bending performance of the child toothbrush meets the use requirement or not can be clearly known, and whether the child toothbrush has favorable supporting force and certain stress bending performance or not can be known.
Further, as a preferred embodiment of the present invention, not limited thereto, the bending resistance force F includes an upper bending resistance force F1, and the pressure measured through steps S2 to S5 is the upper bending resistance force F1 with the bristles of the toothbrush held on the test stand facing upward in step S1. The tooth brush hair surface is the hair implanting surface. As shown in fig. 2, the toothbrush was mounted on a test stand with the bristle side facing up.
Further, as a preferred embodiment of the present invention, not limited thereto, the bending resistance force F includes a lower bending resistance force F2, and the bristles are set face down on the test stand in step S1, and the pressure measured through steps S2 to S5 is the lower bending resistance force F2. As shown in fig. 3, the toothbrush was mounted on the test stand with the bristles facing down.
Further, as a preferred embodiment of the present invention, not limited thereto, the bending resistance force F includes a front bending resistance force F3, the bristle face is forwardly fixed on the test stand in step S1, and the pressure measured through steps S2 to S5 is the front bending resistance force F3. As shown in fig. 4, the toothbrush was mounted on the test stand with the bristle side forward.
Further, as a preferred embodiment of the present invention, not limited thereto, the bending resistance force F includes a back bending resistance force F4, and the pressure measured through steps S2 to S5 is the back bending resistance force F4 in step S1 in which the bristles are set back on the test stand. As shown in fig. 5, the toothbrush was mounted on the test stand with the bristle side facing back. In use, the toothbrush head will typically develop bending resistance in four directions, up, down, front, and back. It is therefore important to detect the bending resistance in these four directions.
Further, as a preferred embodiment of the present solution, but not limiting thereto, in step S1, the toothbrush handle is in clamping engagement with the test station, wherein the position of 30% ± 2% of the overall length of the toothbrush is the clamping position of the test station to the toothbrush handle. In use, the user grips the toothbrush at a position generally 30% of the overall length of the toothbrush. The testboard centre gripping brush holder, and carry out the centre gripping on the position of the whole length of toothbrush 30% +/-2%, the bending effect when more laminating the in-service use.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S2, the position of the force point is 10mm from the brush head to the brush handle.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S3, the preset initial speed is 50 mm/min.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S3, the range of the pre-zero pressure value is set to 0.01N to 0.1N.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S4, the range of the preset downward moving distance is 5mm ± 0.2mm, and the preset descending speed is 50 mm/min.
The invention also discloses a children toothbrush, which comprises a brush head 1 and a brush handle 2, wherein a bent structure 3 is arranged between the brush head 1 and the brush handle 2, a soft glue 4 is arranged on the bent structure 3, and the bent structure 3 and the soft glue 4 are flexibly bent so that the brush head 1 can deviate relative to the brush handle 2.
According to the child toothbrush, when children brush teeth, proper force is difficult to control, so that the toothbrush head can deviate when being stressed in a transition mode, force is removed and buffered through the bent structure and the soft rubber, and the oral cavity of the children is prevented from being damaged. When the children normally use, the bending structure and the soft rubber can provide normal support, and the adult is helped to cooperate with the children to clean teeth.
Further, as a preferred embodiment of the present invention, but not limited thereto, the present invention further comprises a brush neck 5 connected to the brush head 1, and the curved structure 3 is disposed between the brush neck 5 and the brush handle 2. The bending structure is arranged between the brush neck and the brush handle, which is beneficial to increasing the distance between the brush head and the bending structure and has the function of increasing the force arm, so that the bending structure is more easily flexibly bent when the brush head is stressed.
Further, as a preferred embodiment of the present invention, but not limited thereto, the present invention further comprises a bristle surface 6, and the bending structure 3 comprises a first bending structure 31 which is flexibly bent toward the front or back of the bristle surface 6 to allow the brush head 1 to be shifted forward or backward.
Further, as a preferred embodiment of the present invention, but not limited thereto, the bending structure 3 further includes a second bending structure 32 which is flexibly bent toward the left or right side of the brush head 1 so as to allow the brush head 1 to be shifted left and right.
Further, as a preferred embodiment of the present invention, but not limited thereto, the first curved structure 31 includes a flat portion 311, and a connecting portion 312 connecting two ends of the flat portion 311 with the brush handle 2 and the second curved structure 32, respectively, wherein the thickness of the connecting portion 312 gradually decreases toward the flat portion 311 to form two first notches 313 facing the front and back of the bristle surface 6 together with the flat portion 311. The flat portion is easily bent, and the thickness variation of the connecting portion is advantageous in defining the bent position on the flat portion, i.e., the lowest portion of the first recess.
Further, as a preferred embodiment of the present solution, but not limited thereto, the thickness of the second curved structure 32 is gradually thinner along the direction from the first curved structure 31 to the brush head 1 to form two second notches 321 respectively facing to the left side and the right side of the brush head 1. The thickness of the second bending structure becomes thinner gradually, so that the brush head is easy to deflect in the left-right direction when being stressed leftwards and rightwards.
Further, as a preferred embodiment of the present invention, but not limited thereto, an accommodating cavity 21 for accommodating the soft rubber 4 is provided on the brush holder 2, and the soft rubber 4 is integrally formed and wrapped on the bending structure 3 and the brush holder 2.
Further, as a preferred embodiment of the present invention, but not limited thereto, the child toothbrush has upper bending resistance F1, lower bending resistance F2, front bending resistance F3, and rear bending resistance F4, which satisfy F1 × F3+ F2 × F4 ═ P1,8N < P1 < 20N.
Further, as a preferred embodiment of the present solution, but not limited thereto, the handle 2 is provided with at least one concave structure 7, which is concave towards the central axis of the handle and may be similar to the shape of the first recess.
Further, as a preferred embodiment of the present invention, but not limited thereto, the handle 2 is provided with a concave structure 7 at least corresponding to the front and back of the hair-planting surface 6 and one of the left and right sides of the brush head 1.
Further, as a preferred embodiment of the present invention, but not limited thereto, the upper bending resistance F1 and the lower bending resistance F2 of the children's toothbrush satisfy F1 × F2 ═ P2,4N < P2 < 6.5N.
Further, as a preferred embodiment of the present solution, but not limited thereto, the handle 2, the first bending structure 31, the second bending structure 32, and the head 1 are connected in sequence.
Further, as a preferred embodiment of the present invention, but not limited thereto, the present invention further comprises a soft glue 4 covering the bending structure 3 and the handle 2.
Further, as a preferred embodiment of the present invention, but not limited thereto, the present invention further includes a brush neck 5 connected to the brush head 1, the brush neck 5 is provided with a left and right bending limiting portion 8 which is arranged corresponding to the second notch 321 and extends toward the brush handle 2, and the left and right bending limiting portion 8 abuts against the soft rubber 4 to limit the left and right offset of the brush head 1. The left and right bending limiting parts can not only strengthen the firm degree of connection of the soft glue and the bending structure.
Further, as a preferred embodiment of the present invention, but not limited thereto, the handle 2 is provided with a cavity 21 for accommodating the soft glue 4. The soft glue flows into the containing cavity for forming, so that the connection between the soft glue and the brush handle is firmer.
Further, as a preferred embodiment of the present solution, but not limited thereto, the soft gum hardness range: 50A-90A. The bending structure belongs to a part of the toothbrush framework, and when the hardness of the soft rubber is in the range, the soft rubber not only can bring good holding hand feeling, but also can be matched with the toothbrush framework to achieve the required bending resistance.
Further, as a preferred embodiment of the present invention, but not limited thereto, the material of the toothbrush frame includes PP, PBT, and the like, and PP is preferred. Fig. 7 and 8 show a toothbrush skeleton.
Further, as a preferred embodiment of the present solution, but not limited thereto, the soft gel is composed of a mixture of PP and SEBS (hydrogenated styrene-butadiene block copolymer). Through the proportion of adjusting PP and SEBS, and then the hardness of adjustment flexible glue for the flexible glue can form required bending resistance with toothbrush skeleton jointly, when reaching to have certain holding power, still has certain atress bending nature, can effectively protect children's oral cavity.
Further, as a preferred embodiment of the present solution, and not by way of limitation, the toothbrush neck is comprised of a stiff gum skeleton.
According to the child toothbrush, the framework is injection molded firstly through the double-color injection molding machine, then the soft rubber is injected to wrap the framework, the hardness of the soft rubber can be controlled by changing the wrapped soft rubber, and therefore the deflection degree of the toothbrush can be controlled. The harder the soft gel, the harder the toothbrush will deflect when subjected to impact forces.
Test cases:
five children toothbrushes on the market are selected to be compared with the children toothbrush in the embodiment for testing:
1. in embodiment 1, the number of the concave structures of the child toothbrush in this embodiment is 1, and the soft rubber material is a blend of PP and SEBS;
2. comparative example 1, which has a soft rubber covered brush holder structure, the brush holder has 1 concave structure facing the direction of the bristle surface of the toothbrush, the soft rubber is TPE;
3. in comparative example 2, the handle body is a soft rubber structure, the neck is provided with a skeleton structure, the skeleton is completely wrapped by the soft rubber, and the soft rubber is made of TPE (thermoplastic elastomer);
4. in comparative example 3, the handle body is a soft rubber structure, the neck is provided with a skeleton structure, the skeleton is completely wrapped by the soft rubber, and the soft rubber is made of TPE (thermoplastic elastomer);
5. comparative example 4, which has a soft gum wrapped handle structure, the skeleton does not have a concave structure, and the soft gum is silica gel;
6. comparative example 5, with a soft gel-coated handle structure, the skeleton did not have a concave structure, and the soft gel was silica gel.
Table 1: contrast test meter
The working principle of the embodiment is as follows:
the invention provides a method for testing the bending resistance of a child toothbrush, which comprises the following steps of S1, fixing the toothbrush; s2, setting a stress point; s3, setting a zero point; s4, setting parameters; s5, obtaining the bending resistance F, and obtaining the bending resistance of the child toothbrush through the five steps, so that whether the bending performance of the child toothbrush meets the use requirement or not can be clearly known, and whether the child toothbrush has favorable supporting force and certain stress bending performance or not can be known.
The foregoing is illustrative of embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms set forth herein. Similar to the structure of the method, or several technical deductions or substitutions made on the premise of the conception of the present application, should be regarded as the protection scope of the present application.
Claims (10)
1. A method of testing the bending resistance of a child's toothbrush comprising the steps of:
s1, fixing the toothbrush on a horizontally movable test board;
s2, setting a stress point to make the stress point of the toothbrush be positioned right below a force application module of the pressure tester;
s3, setting a zero point, so that the force application module is lowered to the stress point of the toothbrush at a preset initial speed, and returning the pressure value of the pressure tester to zero when the pressure value measured by the pressure tester is a preset return-to-zero pressure value;
s4, setting parameters, namely setting the preset downward moving distance and the preset descending speed of the pressing module;
and S5, acquiring the bending resistance F, and taking the maximum pressure value measured by the pressure tester as the bending resistance F after the pressure application module descends according to the preset downward moving distance.
2. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: the bending resistance force F includes an upper bending resistance force F1, and the pressure measured through steps S2 to S5 is the upper bending resistance force F1 with the bristles of the toothbrush held on the test stand facing upward in step S1.
3. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: the bending resistance force F includes a lower bending resistance force F2, and the pressure measured through steps S2 to S5 is the lower bending resistance force F2 with the bristles of the toothbrush held face down on the test stand in step S1.
4. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: the bending resistance force F includes a front bending resistance force F3, and the pressure measured through steps S2 to S5 is the front bending resistance force F3 with the bristles of the toothbrush held forward on the test stand in step S1.
5. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: the bending resistance force F includes a back bending resistance force F4, and in step S1, the pressure measured through steps S2 to S5 is a back bending resistance force F4 with the bristles of the toothbrush held back on the test stand.
6. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: in step S1, the toothbrush handle is in clamping engagement with the test station, wherein the position of 30% ± 2% of the overall length of the toothbrush is the clamping position of the test station to the toothbrush handle.
7. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: in step S2, the point of force is located at a distance of 10mm from the brush head toward the brush shaft.
8. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: in step S3, the preset initial speed is 50 mm/min.
9. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: in step S3, the range of the preset return-to-zero pressure value is 0.01N to 0.1N.
10. The method of testing bending resistance of a children's toothbrush of claim 1, wherein: in step S4, the range of the preset downward movement distance is 5mm ± 0.2mm, and the preset descending speed is 50 mm/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899618A (en) * | 2021-10-29 | 2022-01-07 | 扬州晨笑刷业有限公司 | Automatic change toothbrush brush hair detection device |
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