WO2011105265A1 - 偏心ロッドの固定構造および振動発生装置 - Google Patents
偏心ロッドの固定構造および振動発生装置 Download PDFInfo
- Publication number
- WO2011105265A1 WO2011105265A1 PCT/JP2011/053274 JP2011053274W WO2011105265A1 WO 2011105265 A1 WO2011105265 A1 WO 2011105265A1 JP 2011053274 W JP2011053274 W JP 2011053274W WO 2011105265 A1 WO2011105265 A1 WO 2011105265A1
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- Prior art keywords
- rod
- eccentric
- central axis
- eccentric rod
- fixing structure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
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- 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
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3481—Vibrating brush body, e.g. by using eccentric weights
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- 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
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
Definitions
- the present invention relates to an eccentric rod fixing structure and a vibration generating device, and more particularly, to an eccentric rod fixing structure and a vibration generating device that generate vibration by rotation of the eccentric rod.
- an electric toothbrush 1 will be described as an example of a vibration generator.
- the electric toothbrush 1 employs a general eccentric rod fixing structure.
- a configuration similar to that of the electric toothbrush 1 is disclosed in Japanese Patent Laid-Open No. 2009-240155 (Patent Document 1).
- a general electric toothbrush 1 includes a case 10, a motor 20, an eccentric rod 30, a stem 40, and an oral hygiene member 50.
- the case 10 is formed in a cylindrical shape.
- the case 10 is gripped by the user of the electric toothbrush 1.
- An operation unit 13 is provided on the surface of the case 10.
- the motor 20 is built near one end 11 of the case 10.
- the motor 20 has a drive shaft 21.
- the motor 20 is connected to a predetermined power source (not shown) built in the case 10 in order to rotate the drive shaft 21.
- the eccentric rod 30 is formed in a substantially rod shape.
- the eccentric rod 30 has a weight portion 33b. The position of the center of gravity of the weight portion 33b is deviated from the center axis 30t of the eccentric rod 30 to the outside (the lower side in FIG. 9). In other words, the weight portion 33 b is eccentric with respect to the central axis 30 t of the eccentric rod 30.
- the other end 32 side of the eccentric rod 30 is connected to the drive shaft 21.
- the stem 40 is formed in a cap shape.
- a bearing portion 44 is provided inside the stem 40 on the one end 41 side.
- One end 31 of the eccentric rod 30 is inserted into the bearing portion 44.
- the stem 40 is mounted on the case 10 side so as to cover the eccentric rod 30.
- the oral hygiene member 50 has a cylindrical part 51 and a brushing part 52.
- a cylindrical portion 51 of the oral hygiene member 50 is attached to the outside of the stem 40.
- the operation of the electric toothbrush 1 configured as described above will be described.
- the user operates the operation unit 13 to drive the motor 20.
- the motor 20 rotates the drive shaft 21.
- the eccentric rod 30 rotates integrally with the drive shaft 21 by the power transmitted from the drive shaft 21.
- the centrifugal force is generated around the central axis 30t by rotating the weight part 33b around the central axis 30t.
- the centrifugal force causes the stem 40 to vibrate.
- the vibration of the stem 40 is transmitted to the brushing part 52 through the cylindrical part 51 of the oral hygiene member 50.
- the brushing unit 52 vibrates.
- the stem 40 is attached to the case 10 with the eccentric rod 30 interposed therebetween.
- a reference axis 40t that connects the bearing portion 44 of the stem 40 and the drive shaft 21 of the motor 20 is defined.
- the central shaft 30t as a whole of the eccentric rod 30 is formed in a straight line.
- the central axis 30t of the eccentric rod 30 and the reference axis 40t are arranged on substantially the same straight line (see the lower side in FIG. 10).
- the volume of sound generated by the vibration of the electric toothbrush 1 is small.
- the electric toothbrush 1 is driven at a relatively high rotational speed (for example, 30000 spm (Strokes per minute) or more), the loudness generated by the vibration of the electric toothbrush 1 increases.
- the present invention provides an eccentric rod fixing structure and a vibration generating device capable of reducing the volume of sound generated by vibration even when driven at a high rotational speed as well as at a low rotational speed. For the purpose.
- An eccentric rod fixing structure is an eccentric rod fixing structure used in a vibration generator, and includes a rotary drive means having a drive shaft, an eccentric weight portion on one end side, and the drive shaft on the other end side.
- a rod portion connected to the rotation shaft, and a substantially rod-shaped eccentric rod that is rotated by power transmitted through the drive shaft from the rotation driving means, and a bearing portion on one inner side, and the eccentric rod
- a vibration portion disposed at one end of the bearing portion and covering the eccentric rod, wherein the eccentric weight portion extends along a longitudinal direction of the eccentric weight portion.
- the rod part has a second central axis extending along the longitudinal direction of the rod part, and an extension line is defined by extending the second central axis to the eccentric weight part side, Eccentric rod
- an angle between the first central axis of the eccentric weight portion and the extension line is greater than 0 ° and not more than about 10 °, and the eccentric rod
- the one end of the eccentric rod is inserted into the bearing portion, so that the one end of the eccentric rod is fixed so as to always urge against the inner peripheral surface of the bearing portion.
- the rod part is attached to a substantially cylindrical rod connector for fixing the eccentric weight part to one end side, and the other end side of the rod connector,
- a shaft connection portion connected to the drive shaft is integrally formed.
- a columnar constricted portion is formed.
- the material of the rod connector is polyacetal.
- the eccentric weight portion and the rod portion are integrally formed.
- the vibration generator according to the present invention includes the eccentric rod fixing structure described above.
- an eccentric rod fixing structure and vibration generator capable of reducing the volume of sound generated by vibration even when driven at a high speed as well as at a low speed. Can be obtained.
- FIG. 3 is a perspective view showing an eccentric rod according to the electric toothbrush of the first embodiment. It is sectional drawing (assembly drawing) which shows the case, motor, eccentric rod, and stem which concern on the electric toothbrush of Embodiment 1. FIG. It is a perspective view which shows the eccentric rod which concerns on the electric toothbrush of Embodiment 2. FIG. It is sectional drawing (assembly drawing) which shows the case, motor, eccentric rod, and stem which concern on the electric toothbrush of Embodiment 2. FIG. It is FIG. 1 which shows schematically the experimental result which concerns on the electric toothbrush of Embodiment 2. FIG. It is FIG.
- FIG. 2 which shows schematically the experimental result which concerns on the electric toothbrush of Embodiment 2.
- FIG. It is a perspective view (assembly drawing) which shows the whole structure of a general electric toothbrush. It is sectional drawing (partial side view) which shows the whole structure of a general electric toothbrush. It is sectional drawing (assembly drawing) which shows a case, a motor, an eccentric rod, and a stem concerning a general electric toothbrush.
- the electric toothbrush 1 ⁇ / b> A includes a case 10, a motor 20 (rotation driving means), an eccentric rod 30 ⁇ / b> A, a stem 40 (vibrating part), and an oral hygiene member 50.
- the case 10, the motor 20, the stem 40, and the oral hygiene member 50 are configured in the same manner as the electric toothbrush 1 described above.
- the bearing portion 44 provided inside the one end 41 side of the stem 40 may be configured integrally with the stem 40 or may be configured as a separate component from the stem 40.
- the material of the case 10 is, for example, ABS resin (Acrylonitrile-Butadiene-Styrene copolymer synthetic resin).
- the material of the stem 40 is, for example, polycarbonate.
- the material of the fixing member 43 provided annularly on the other end 42 side of the stem 40 may be an elastomer.
- the material of the cylindrical part 51 of the oral hygiene member 50 is, for example, polypropylene.
- the material of the cleaning part 52 of the oral hygiene member 50 is, for example, nylon (hairy).
- the oral hygiene member 50 in the present embodiment is a brush-like member.
- the oral hygiene member 50 may be a group of silicon pieces for massage.
- the eccentric rod 30A is formed in a substantially rod shape.
- the eccentric rod 30A has an eccentric weight portion 33 on one end 31 side and a rod portion 34 on the other end 32 side.
- the eccentric weight portion 33 is integrally formed by a columnar insertion portion 33a, a weight portion 33b having a substantially C-shaped cross section, and a connection portion 33c.
- the material of the eccentric weight portion 33 is, for example, phosphor bronze.
- the central axis of the insertion portion 33a and the central axis of the connection portion 33c are located on substantially the same straight line.
- the central axis of the insertion portion 33 a and the central axis of the connection portion 33 c define a first central axis 33 t extending along the longitudinal direction of the eccentric weight portion 33.
- the position of the center of gravity of the weight portion 33b is deviated from the first central axis 33t to the outside (upper side in FIG. 3). In other words, the weight part 33b is eccentric with respect to the first central axis 33t.
- the rod portion 34 includes a substantially cylindrical upper rod connector 34a, a substantially cylindrical (substantially H-shaped) lower rod connector 34b, and a shaft connecting portion 34c.
- the upper rod connector 34a (excluding the portion on the one end 34aa side), the lower rod connector 34b, and the shaft connecting portion 34c are formed symmetrically about a second central axis 34t (details will be described later).
- Axisymmetrical means that the cross-sectional shape orthogonal to the second central axis 34t is point symmetric about the second central axis 34t.
- the material of the upper rod connector 34a and the shaft connecting portion 34c is, for example, polypropylene.
- As the material of the lower rod connector 34b for example, an elastomer or another elastic member can be adopted.
- a recess 35 is formed on one end 34aa side of the upper rod connector 34a.
- the connecting portion 33 c of the eccentric weight portion 33 is fitted into the concave portion 35.
- a recess 36 is formed on one end 34ba side of the lower rod connector 34b.
- the other end 34ab of the upper rod connector 34a is fitted into the recess 36.
- a recess 38 is formed on the other end 34bb side of the lower rod connector 34b.
- One end 34ca of the shaft connecting portion 34c is fitted into the recess 38.
- a constricted portion 37 is formed at a substantially central portion in the longitudinal direction of the lower rod connector 34b.
- the constricted part 37 is formed in a substantially cylindrical shape as a whole.
- the diameter of the constricted portion 37 is smaller than the diameter of the upper rod connector 34a.
- a concave portion 39 is formed on the other end 34cb side of the shaft connecting portion 34c.
- the eccentric rod 30 ⁇ / b> A is connected to the drive shaft 21 by inserting the drive shaft 21 of the motor 20 into the recess 39.
- the central axis of the upper rod connector 34a, the central axis of the lower rod connector 34b, and the central axis of the shaft connecting portion 34c are located on substantially the same straight line.
- the central axis of the upper rod connector 34a, the central axis of the lower rod connector 34b, and the central axis of the shaft connecting portion 34c define a second central axis 34t that extends along the longitudinal direction of the rod portion 34.
- the extension line 34s is defined by extending the second central axis 34t toward the eccentric weight part 33 side.
- the first central axis 33t of the eccentric weight portion 33 and the above-described extension line 34s An angle ⁇ of about 2.0 ° or more and about 5.0 ° or less is formed in between.
- the eccentric weight part 33 has an angle between the first central axis 33t of the eccentric weight part 33 and the second central axis 34t of the rod part 34 of about 175 ° or more and about 178 ° or less. It is fixed to the rod part 34.
- the stem 40 is attached to the case 10 side with the eccentric rod 30A interposed therebetween.
- the insertion portion 33a is inserted into the bearing portion 44, the one end 31 side of the eccentric rod 30A stands in the direction indicated by the arrow AR1 (see the upper side in FIG. 3).
- the stem 40 is attached to the case 10 side.
- a restoring force is generated that tends to be displaced in the direction indicated by the arrow AR2. Due to the restoring force, the outer peripheral surface of the insertion portion 33 a is always urged against the inner peripheral surface of the bearing portion 44. In other words, the outer peripheral surface of the insertion portion 33 a is always pressed against the inner peripheral surface of the bearing portion 44.
- the user operates the operation unit 13 to drive the motor 20.
- the motor 20 rotates the drive shaft 21.
- the eccentric rod 30 ⁇ / b> A rotates integrally with the drive shaft 21 by the power transmitted from the drive shaft 21.
- the eccentric rod 30 ⁇ / b> A rotates, the outer peripheral surface of the insertion portion 33 a slides with respect to the inner peripheral surface of the bearing portion 44.
- the restoring force acts on the one end 31 side of the eccentric rod 30A.
- the eccentric rod 30 ⁇ / b> A can rotate in a state in which the contact state between the outer peripheral surface of the insertion portion 33 a and the inner peripheral surface of the bearing portion 44 is reliably maintained. Even when the motor 20 rotates the drive shaft 21 at a high speed, the contact state between the outer peripheral surface of the insertion portion 33a and the inner peripheral surface of the bearing portion 44 (compared to the electric toothbrush 1 described at the beginning). Can be kept better. In other words, according to the electric toothbrush 1 ⁇ / b> A, more opportunities to contact the outer peripheral surface of the insertion portion 33 a and the inner peripheral surface of the bearing portion 44 can be obtained.
- both ends (one end 31 and the other end 32) of the eccentric rod 30A become so-called fixed ends.
- the eccentric rod 30A can rotate stably.
- the central shaft 30t as a whole of the eccentric rod 30 is linearly formed. Even if the stem 40 is attached to the case 10 with the eccentric rod 30 interposed therebetween, the outer peripheral surface of the insertion portion 33a is not biased against the inner peripheral surface of the bearing portion 44 (the outer peripheral surface of the insertion portion 33a is And is not pressed against the inner peripheral surface of the bearing portion 44).
- the electric toothbrush 1 when the motor 20 rotates the drive shaft 21 at a high speed, the contact state between the outer peripheral surface of the insertion portion 33a and the inner peripheral surface of the bearing portion 44 cannot be maintained. A flapping sound is generated such that the outer peripheral surface of the insertion portion 33 a hits the inner peripheral surface of the bearing portion 44.
- the eccentric rod 30 cannot rotate stably. As a result, the volume of sound generated by the vibration of the eccentric rod 30 increases.
- the eccentric rod 30A can rotate stably. It is possible to suppress the occurrence of flapping noise such that the outer peripheral surface of the insertion portion 33 a hits the inner peripheral surface of the bearing portion 44. As a result, it is possible to reduce the volume of sound generated when the eccentric rod 30A vibrates.
- a generally cylindrical constricted portion 37 is formed on the lower rod connector 34b as a whole.
- the diameter of the constricted portion 37 is smaller than the diameter of the upper rod connector 34a. In the constricted portion 37, the eccentric rod 30A is easily bent.
- the material of the upper rod connector 34a and the shaft connecting portion 34c is made of polypropylene, and the material of the lower rod connector 34b is made of elastomer (softer than polypropylene), whereby the service life of the eccentric rod 30A can be made longer.
- the eccentric rod 30B is formed in a substantially rod shape.
- the eccentric rod 30B has an eccentric weight portion 33 on one end 31 side and a rod portion 34 on the other end 32 side.
- the eccentric weight portion 33 is integrally configured by a columnar insertion portion 33a, a weight portion 33b having a substantially C-shaped cross section, and a connection portion 33c.
- the material of the eccentric weight portion 33 is, for example, phosphor bronze.
- the central axis of the insertion part 33a and the central axis of the connection part 33c are located on the same straight line.
- the central axis of the insertion portion 33 a and the central axis of the connection portion 33 c define a first central axis 33 t extending along the longitudinal direction of the eccentric weight portion 33.
- the position of the center of gravity of the weight portion 33b is deviated from the first central axis 33t to the outside (upper side in FIG. 5). In other words, the weight part 33b is eccentric with respect to the first central axis 33t.
- the rod part 34 is composed of a substantially cylindrical rod connector 34d and a shaft connection part 34c.
- the rod connector 34d (excluding the portion on the one end 31 side) and the shaft connecting portion 34c are formed symmetrically about a second central axis 34t (details will be described later).
- the rod connector 34d may be configured such that its diameter gradually decreases until it reaches a constricted portion 37 (details will be described later) located on the right side of FIG. With this configuration, the rod connector 34d can be improved in elasticity and durability as compared with a case where the diameter of the rod connector 34d decreases stepwise (stepwise) until reaching the constricted portion 37.
- the material of the rod connector 34d and the shaft connecting portion 34c may be polyacetal.
- the rod connector 34d and the shaft connecting portion 34c are integrally formed.
- the rod connector 34d and the shaft connecting portion 34c may be configured as separate parts.
- a recess 35 is formed on one end 34da side of the rod connector 34d.
- the connecting portion 33 c of the eccentric weight portion 33 is fitted into the concave portion 35.
- the rod connector 34d and the shaft connection portion 34c are configured as separate parts (not integrally formed), the other end side of the rod connector 34d and one end side of the shaft connection portion 34c are joined.
- the eccentric weight portion 33 and the rod connector 34d may be integrally formed by resin molding.
- a constricted portion 37 is formed at a portion near the other end (near the shaft connecting portion 34c) of the substantially central portion of the rod connector 34d.
- the constricted part 37 is formed in a substantially cylindrical shape as a whole.
- the diameter of the constricted part 37 is smaller than the diameter of the other part of the rod connector 34d.
- a concave portion 39 is formed on the other end 34cb side of the shaft connecting portion 34c.
- the eccentric rod 30 ⁇ / b> B is connected to the drive shaft 21 by inserting the drive shaft 21 of the motor 20 into the recess 39.
- the central axis of the rod connector 34d and the central axis of the shaft connecting portion 34c are located on substantially the same straight line.
- the central axis of the rod connector 34d and the central axis of the shaft connecting portion 34c define a second central axis 34t extending along the longitudinal direction of the rod portion 34.
- the extension line 34s is defined by extending the second central axis 34t toward the eccentric weight part 33 side.
- the first central shaft 33t of the eccentric weight portion 33 and the extension line 34s described above An angle ⁇ of about 2.0 ° or more and about 5.0 ° or less is formed in between.
- the eccentric weight part 33 has an angle between the first central axis 33t of the eccentric weight part 33 and the second central axis 34t of the rod part 34 of about 175 ° or more and about 178 ° or less. It is fixed to the rod part 34.
- the stem 40 is attached to the case 10 side with the eccentric rod 30B interposed therebetween.
- the insertion portion 33a is inserted into the bearing portion 44, the one end 31 side of the eccentric rod 30B stands up in the direction indicated by the arrow AR1 (see the upper side in FIG. 5).
- the stem 40 is attached to the case 10.
- a restoring force for generating displacement in the direction indicated by the arrow AR2 is generated. Due to the restoring force, the outer peripheral surface of the insertion portion 33 a is always urged against the inner peripheral surface of the bearing portion 44. In other words, the outer peripheral surface of the insertion portion 33 a is always pressed against the inner peripheral surface of the bearing portion 44.
- the eccentric rod 30B can stably rotate as in the electric toothbrush 1A in the first embodiment. As a result, it is possible to reduce the volume of sound generated by the vibration of the eccentric rod 30B.
- the rod connector 34d is formed with a substantially cylindrical constricted portion 37 as a whole.
- the diameter of the constricted part 37 is smaller than the diameter of the other part of the rod connector 34d.
- the eccentric rod 30B is easily bent.
- the rod portion 34 of the eccentric rod 30B in the present embodiment is composed of a rod connector 34d and a shaft connection portion 34c as one component (two components are composed of a rod connector 34d and a shaft connection portion 34c. May be)
- the rod portion 34 of the eccentric rod 30A in the first embodiment includes three parts (an upper rod connector 34a, a lower rod connector 34b, and a shaft connection portion 34c). According to the electric toothbrush in the present embodiment, the number of parts and the manufacturing cost can be reduced.
- the eccentric weight part 33 may be placed on a predetermined mold and integrated with the rod connector 34d by resin molding. In this case, since the eccentric weight part 33 should just be a coaxial shape, manufacturing cost can be held down and manufacture itself is also easy. On the other hand, when the rod connector 34d and the eccentric weight portion 33 are not integrally formed, it is necessary to fit the eccentric weight portion 33 into the rod connector 34d. In this case, it is somewhat difficult to provide a hole on the rod connector 34d side, and it is necessary to configure the eccentric weight portion 33 in a non-coaxial shape.
- the total length of the eccentric weight portion 33 is about 23 mm.
- the total length of the rod portion 34 is about 45 mm.
- the material of the eccentric weight portion 33 is phosphor bronze.
- the diameter of the rod part 34 is about 3 mm.
- the diameter of the constricted part 37 in the rod part 34 is about 1.57 mm.
- the material of the rod part 34 is polyacetal.
- the diameter of the insertion portion 33a of the eccentric weight portion 33 is about 1.98 mm.
- the diameter of the inner peripheral surface of the bearing portion 44 of the stem 40 is about 2.00 mm.
- the rotation speed of the motor 20 is about 33000 spm.
- the abnormal sound level N when the angle ⁇ is 0 °, the abnormal sound level N is large. It can be seen that the abnormal sound level N sharply decreases as the angle ⁇ is increased from 0 °. When the angle ⁇ is about 2.0 ° or more, the abnormal sound level N hardly decreases. When the angle ⁇ is larger than about 10 °, the abnormal noise level N is kept reduced, but it is difficult to incorporate the eccentric rod and the stem (bearing portion).
- the angle ⁇ is preferably about 2.0 ° or more and about 5.0 ° or less. More preferably, it has been found that the angle ⁇ should be between about 3.0 ° and about 3.5 °.
- angle (theta) should be about 2.0 degrees or more and about 5.0 degrees or less. More preferably, it has been found that the angle ⁇ is not less than about 3.0 ° and not more than about 3.5 °.
- the electric toothbrush has been described as an example of the eccentric rod fixing structure and the vibration generator as each embodiment based on the present invention.
- the embodiment disclosed this time is illustrative and restrictive in all respects. It should be considered not.
- the description has been given based on the substantially cylindrical case formed in a substantially linear shape, but the present invention is not limited to this.
- the case may be configured to be partially refracted in the middle so that the user can more easily grip the case.
- the configuration of the so-called brush exchange type electric toothbrush has been described based on the aspect in which the entire oral hygiene member 50 covering the stem 40 is replaceable.
- the present invention is not limited to this. I can't.
- the oral hygiene member 50 does not have the cylindrical portion 51 (a configuration in which the cylindrical portion 51 and the stem 40 are integrated), and the brushing portion 52 and the brushing portion 52 are implanted.
- the present invention can also be applied to a mode in which only the pedestal portion in the vicinity can be replaced.
- the oral hygiene member 50 does not have the cylindrical portion 51, and is applied to an aspect in which the brushing portion 52 is directly provided on the stem 40 (the brushing portion cannot be replaced). It is possible.
- the eccentric rod fixing structure and the vibration generating device according to the present invention are not limited to the electric toothbrush, but may be applied to, for example, a scalp brush with a vibrator function, a dental electric surgical instrument, or an electric tool. Is possible.
- the scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
- 1,1A electric toothbrush 10 case, 11, 31, 34aa, 34ba, 34ca, 34da, 41 one end, 13 operation unit, 20 motor, 21 drive shaft, 30, 30A, 30B eccentric rod, 30t central axis, 32, 34ab , 34bb, 34cb, 42 other end, 33 eccentric weight part, 33a insertion part, 33b weight part, 33c connection part, 33t first central axis, 34 rod part, 34a upper rod connector, 34b lower rod connector, 34c shaft connection part , 34d rod connector, 34s extension line, 34t second central axis, 35, 36, 38, 39 recess, 37 constricted part, 40 stem, 40t reference axis, 43 fixed member, 44 bearing part, 50 oral hygiene member, 51 cylinder Shaped part, 52 brushing part, AR1, AR2 arrow, I Current consumption, N allophone level, theta angle.
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- Animal Behavior & Ethology (AREA)
- Mechanical Engineering (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
図1~図3を参照して、本実施の形態における電動歯ブラシ1Aについて説明する。
図1を参照して、電動歯ブラシ1Aは、ケース10、モータ20(回転駆動手段)、偏心ロッド30A、ステム40(振動部)、および口腔衛生部材50を備えている。ケース10、モータ20、ステム40、および口腔衛生部材50は、上記の電動歯ブラシ1と同様に構成される。ステム40の一端41側の内側に設けられている軸受部44は、ステム40と一体的に構成されていてもよく、ステム40とは別部品として構成されていてもよい。
ステム40は、偏心ロッド30Aを挟んでケース10側に取り付けられる。軸受部44に挿入部33aが挿入されるとき、偏心ロッド30Aの一端31側は、矢印AR1(図3紙面上方側参照)に示す方向に起立する。
図4および図5を参照して、本実施の形態における電動歯ブラシについて説明する。本実施の形態における電動歯ブラシと、上述の実施の形態1における電動歯ブラシ1Aとは、偏心ロッド30Bにおいて相違し、その他については同様に構成される。
ステム40は、偏心ロッド30Bを挟んでケース10側に取り付けられる。軸受部44に挿入部33aが挿入されるとき、偏心ロッド30Bの一端31側は、矢印AR1(図5紙面上方側参照)に示す方向に起立する。
図6および図7を参照して、実施の形態2に係る実験結果について説明する。実施の形態2の構成において、偏心分銅部33の第1中心軸33t(図5参照)と、延長線34sとの間の角度θを変化させたときの、電動歯ブラシから発生する振動音の異音レベルNの変化(図6参照)、および電動歯ブラシの消費電流IC(A)の変化を測定した。ここで言う異音レベルとは、振動音の周波数および音圧などに基づいて算出される所定の値を意味する。
Claims (6)
- [規則91に基づく訂正 21.06.2011]
振動発生装置に用いられる偏心ロッドの固定構造であって、
駆動シャフト(21)を有する回転駆動手段(20)と、
一端(31)側に偏心分銅部(33)と、他端(32)側に前記駆動シャフト(21)に接続されるロッド部(34)とを有し、前記回転駆動手段(20)から前記駆動シャフト(21)を通して伝達される動力により回転する略棒状の偏心ロッド(30A,30B)と、
一端(41)側の内側に軸受部(44)を有し、前記偏心ロッド(30A,30B)の前記一端(31)が前記軸受部(44)に挿入されるとともに、前記偏心ロッド(30A,30B)を覆うように配設される振動部(40)と、
を備え、
前記偏心分銅部(33)は、前記偏心分銅部(33)の長手方向に沿って延びる第1中心軸(33t)を有し、
前記ロッド部(34)は、前記ロッド部(34)の長手方向に沿って延びる第2中心軸(34t)を有し、
前記第2中心軸(34t)を前記偏心分銅部(33)側に延長することにより延長線(34s)が規定され、
前記偏心ロッド(30A,30B)の前記一端(31)が前記軸受部(44)に挿入されていない状態において、前記偏心分銅部(33)の前記第1中心軸(33t)と、前記延長線(34s)との間の角度(θ)は、0°より大きく約10°以下であり、
前記偏心ロッド(30A,30B)は、前記偏心ロッド(30A,30B)の前記一端(31)が前記軸受部(44)に挿入されることにより、前記偏心ロッド(30A,30B)の前記一端(31)が前記軸受部(44)の内周面に対して常に付勢するように固定される、
偏心ロッドの固定構造。 - [規則91に基づく訂正 21.06.2011]
前記偏心ロッド(30A,30B)の前記一端(31)が前記軸受部(44)に挿入されていない状態において、前記偏心分銅部(33)の前記第1中心軸(33t)と、前記延長線(34s)との間の角度(θ)は、約2.0°以上約5.0°以下である、
請求項1に記載の偏心ロッドの固定構造。 - [規則91に基づく訂正 21.06.2011]
前記ロッド部(34)は、前記偏心分銅部(33)を一端(34da)側に固定する略円柱状のロッドコネクタ(34d)と、前記ロッドコネクタ(34d)の他端(34cb)側に取り付けられ、前記駆動シャフト(21)に接続されるシャフト接続部(34c)とから一体的に構成され、
前記ロッドコネクタ(34d)の前記一端(34da)と前記ロッドコネクタ(34d)の前記他端(34cb)との間には、他の部分より相対的に直径の小さい略円柱状の括れ部(37)が形成されている、
請求項1に記載の偏心ロッドの固定構造。 - 前記ロッドコネクタ(34d)の材料はポリアセタールである、
請求項3に記載の偏心ロッドの固定構造。 - [規則91に基づく訂正 21.06.2011]
前記偏心分銅部(33)と前記ロッド部(34)とは、一体成形されている、
請求項1に記載の偏心ロッドの固定構造。 - 請求項1に記載の偏心ロッドの固定構造を備えた振動発生装置(1A)。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001521426A (ja) * | 1997-04-24 | 2001-11-06 | ブラウン ゲーエムベーハー | 電動歯ブラシ用ブラシ部 |
JP2008080099A (ja) * | 2006-08-29 | 2008-04-10 | Omron Healthcare Co Ltd | 電動歯ブラシ |
JP2009240155A (ja) | 2002-05-03 | 2009-10-15 | Koninkl Philips Electronics Nv | 電動歯ブラシ装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2282700A (en) * | 1939-04-26 | 1942-05-12 | James D Bobbroff | Toothbrush |
DE4239251A1 (de) * | 1992-11-21 | 1994-05-26 | Braun Ag | Elektrische Zahnbürste mit drehbarem Borstenträger |
DE4438732A1 (de) * | 1994-10-29 | 1996-05-02 | Braun Ag | Bürstenteil für eine elektrische Zahnbürste |
DE19512318A1 (de) * | 1995-04-01 | 1996-10-10 | Braun Ag | Bürstenteil für eine elektrische Zahnbürste |
DE19654319C1 (de) * | 1996-12-24 | 1998-08-06 | Rowenta Werke Gmbh | Elektrische Zahnbürste |
DE29913406U1 (de) * | 1999-07-31 | 1999-11-25 | Rowenta Werke Gmbh | Zubehörträger für eine elektrische Zahnbürste |
US20030163882A1 (en) * | 2002-03-04 | 2003-09-04 | The Procter & Gamble Company | Electric toothbrushes |
US20040134001A1 (en) * | 2002-09-13 | 2004-07-15 | The Procter & Gamble Company | Toothbrushes with a replaceable head having a threaded connection |
JP4646105B2 (ja) * | 2004-04-15 | 2011-03-09 | ピジョン株式会社 | 歯ブラシ |
JP5277580B2 (ja) * | 2007-07-27 | 2013-08-28 | オムロンヘルスケア株式会社 | 電動歯ブラシ |
JP5194904B2 (ja) * | 2008-03-13 | 2013-05-08 | オムロンヘルスケア株式会社 | 電動歯ブラシ |
JP5217611B2 (ja) * | 2008-05-14 | 2013-06-19 | オムロンヘルスケア株式会社 | 電動歯ブラシ |
JP2010005187A (ja) * | 2008-06-27 | 2010-01-14 | Panasonic Electric Works Co Ltd | 電動歯ブラシ |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001521426A (ja) * | 1997-04-24 | 2001-11-06 | ブラウン ゲーエムベーハー | 電動歯ブラシ用ブラシ部 |
JP2009240155A (ja) | 2002-05-03 | 2009-10-15 | Koninkl Philips Electronics Nv | 電動歯ブラシ装置 |
JP2008080099A (ja) * | 2006-08-29 | 2008-04-10 | Omron Healthcare Co Ltd | 電動歯ブラシ |
Non-Patent Citations (1)
Title |
---|
See also references of EP2540253A4 |
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