JPH0545753U - Blasting instruction device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object is to obtain a brushing instructing device capable of instructing an appropriate brush pressing force for each individual [Structure] A grip portion on one end side of the rod-shaped main body 1 of the toothbrush 2, a brush part 3 for brushing teeth on the other end side of the main body 1, and a force detection sensor 5 between the grip part 2 and the brush part 3,
A brushing instruction device was provided with a display 6 for displaying the value detected by the force detection sensor 5. The portion where the force detection sensor 5 of the main body 1 is located is formed in a thin portion having flexibility or is formed of a flexible material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an instruction device for brushing in dental care.

[0002]

[Prior Art]

 Conventionally, when instructing the force of pressing the toothbrush against the teeth or gums during brushing of the toothpaste, the instructor explains in words or the instructor holds his / her hand and the sense of pressing force is applied. Judges are judged and the force applied to the toothbrush is adjusted to give guidance.

[0003]

[Problems to be solved by the device]

 However, there are individual differences in the pressing force during brushing, and it was difficult to teach an appropriate pressing force by the conventional method that relies on the sense of the instructor.

The present invention has been made in view of the above matters, and an object thereof is to obtain a brushing instructing device that can instruct an appropriate brush pressing force for each individual.

[0005]

[Means for Solving the Problems]

 According to the present invention, a grip portion 2 is provided on one end side of a rod-shaped main body 1 of a toothbrush 7, a brush portion 3 for toothbrushing is provided on the other end side of the main body 1, and force detection is performed between the grip portion 2 and the brush portion 3. A brushing instruction device was provided with a sensor 5 and a display 6 for displaying a value detected by the force detection sensor 5.

Then, the portion of the main body 1 where the force detection sensor 5 is located is formed as a thin portion having flexibility or is formed of a flexible material.

[0007]

[Action]

 When the rod-shaped grip portion 2 is gripped and the brush portion 3 brushes teeth, the portion of the main body 1 where the force detection sensor 5 is located bends according to the pressing force of the brush portion 3. In response to this distortion, the force detection sensor 5 generates an electric signal and sends information to the display 6, and the display 6 performs a predetermined calculation and amplification to show the pressing force value acting on the brush section 3. indicate.

As described above, the pressing force applied from the brush portion 3 to the teeth and gums during brushing can be recognized by the user or the like by a specific numerical value.

[0009]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. The brushing instruction apparatus of the present embodiment includes a grip portion 2 at one end of a rod-shaped main body 1 of a toothbrush 7, a brush portion 3 at the other end of the main body 1, and a gap between the grip portion 2 and the brush portion 3. The force detection sensor 5 located at the position, and the indicator 6 that operates by receiving a signal from the force detection sensor 5 are provided.

As shown in FIG. 1, the portion of the main body 1 where the force detection sensor 5 is located is a thin portion 8 that is thinner than the other portions of the main body 1. The thin portion 8 is formed so that the upper and lower surfaces and both side surfaces are vertically positioned.

A concave portion 15 for mounting the brush portion 3 is formed on the other end of the rod-shaped main body 1, and the concave portion 15 is provided with a female screw 16. The brush part 3 has a brush 10 for brushing teeth on the surface side, and a convex part 11 is formed at one end of the brush part 3. The convex part 11 is a male screw 12 and the concave part is formed. It is adapted to be screwed into 15.

Then, the concave portion 15 and the convex portion 11 are formed with protrusions (not shown) for locking, respectively, and when the brush portion 3 is screwed into the grip portion 2, the rear surface of the brush portion 3 is The thin portion 8 is positioned in parallel with the upper and lower surfaces.

Further, the brush portion 3 and the grip portion 2 are joined by screwing, and a protrusion is provided on the convex portion 11 of the brush portion 3, and a groove corresponding to this protrusion is formed on the concave portion 15 of the grip portion 2. They may be formed so as to be detachably fitted and fixed to each other.

A small-diameter thin-walled portion 8 formed on the other end side of the rod-shaped main body 1 has flexibility, and the pressing force applied to the brush portion 3 is detected on the surface of the thin-walled portion 8. The force detection sensor 5 is provided.

As shown in FIG. 2, the force detection sensor 5 includes a strain gauge A and a strain gauge C which are attached to the upper and lower surfaces of the thin portion 8 in the horizontal direction in the figure, and a strain gauge B and a strain gauge D. Are affixed to both sides of the thin portion 8 in the vertical direction.

A lead wire 9 connected to each of the strain gauges A, B, C, D is connected to the display 6 from one end of the main body 1. The strain gauges A, B, C, D output electric signals to the display 6 through the lead wires 9 according to the strain of the thin portion 8.

That is, the force detection sensor 5 constitutes a bridge circuit as shown in FIG. That is, the pressing force value is detected by measuring the change in voltage generated by the change in resistance of each strain gauge due to the strain of the thin portion 8.

The outputs corresponding to the strains of the strain gauges A, B, C, D are subjected to predetermined calculation and amplification by the calculation circuit 20 built in the display 6, and are actually applied to the brush section 3. The pressing force is displayed on the meter (21).

The display device 6 performs a visual display by an analog meter, but may be a digital display or may be a voice display. The portion of the main body 1 where the force detection sensor 5 is located does not have to be formed thin if a material having higher flexibility than the other main body 1 is used. It is also possible to make a shape.

A cover may be attached around the thin portion 8 to cover the thin portion 8. Further, this brushing instruction device may be formed so that a commercially available toothbrush can be attached to the main body 1 instead of the brush portion 3. At this time, in order to accurately display the pressing force applied to the brush portion, if the length value of a commercially available toothbrush or the strain value associated with the material is input to the arithmetic circuit 20 in advance, the arithmetic circuit 20 will be installed. It becomes possible to display an accurate pressing force value by performing calculations according to the various conditions of.

Further, the force detection sensor 5 can be made to generate an electromotive force by light energy, the number of lead wires 9 can be reduced, and a display device can be provided in the main body 1 to have a compact structure.

When the display device 6 is a device that performs visual display using a light emitting diode and audio display using a buzzer, the pressing force of brushing that is more appropriate for each individual, such as the elderly and patients with alveolar pyorrhea. Therefore, the calculation circuit 20 may calculate an appropriate value for each individual to operate the display 6.

That is, for example, when a switch for the elderly is turned on, the light emitting diode, which is an indication of an appropriate value, is turned on or a buzzer sound is emitted with a slightly weaker pressing force.

Further, the signal (voltage) from the bridge circuit shown in FIG. 3 is compared with the voltage from a separately provided reference voltage generator (not shown), and when it becomes higher than the reference, the light emitting diode is turned on. The user may be made to recognize it by lighting the switch.

Here, the output voltage of the reference voltage generator is made variable, and this variable setting is made by an externally provided potentiometer or the like. Therefore, the pressing force for operating the indicator 6 can be set arbitrarily. For example, if the normal pressing force is 300 g, and if you want to select a slightly weaker pressing force, set the volume to 250 g. If this is done, when the pressing force applied to the brush unit 3 reaches 250 g, the light emitting diode is turned on or a buzzer sound is generated.

Then, when the pressing force is weaker than the appropriate value or too strong, the color of the display lamp may be changed or the voice may be changed, or the pressing force is outside the appropriate value within a certain range. Only in this case, an alarm may be given by a buzzer sound or the like so that the user can recognize the state of the pressing force.

Further, the brush 10 of the brush unit 3 may be attached with a massage member for gum massage, instead of the brush made of synthetic resin or the like. As described above, the brushing teaching device of the present invention detects the pressing force acting on the teeth and gums during brushing by the strain gauge and can display it with a specific numerical value. It is possible to surely teach brushing by.

[0028]

[Effect of the device]

 The brushing teaching device of the present invention can specifically display the pressing force applied to the teeth and gums during brushing, and can teach the user proper brushing.

[Submission date] November 26, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

Furthermore, the brushing guidance device of the present embodiment, if Sonaere a solar cell, the electrical energy for operation of the force sensing cell for input to the capacitors 5 (for electromotive force of the force detecting sensor 5) or display , Can also be supplied by light energy. Therefore, if the solar cell is provided in the vicinity of the force detection sensor 5 of the main body 1 or integrally with the force detection sensor 5, the lead wire for input to the force detection sensor 5 can be reduced or deleted , and the display unit It is also possible to equip it in 1 and make the whole compact structure.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a brushing instruction device according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a force detection sensor unit in the embodiment.

FIG. 3 is a circuit diagram of a strain gauge according to an embodiment.

[Explanation of symbols]

 2 ・ ・ Gripping part 3 ・ ・ Brush part 5 ・ ・ Force detection sensor 6 ・ ・ Display 7 ・ ・ Toothbrush

Claims (1)

[Scope of utility model registration request] 1. A display device for displaying a value detected by the force detection sensor (5) provided between a grip portion (2) and a brush portion (3) of a toothbrush (7). (6)
A brushing instruction device characterized by having.