JP2598441Y2 - electric toothbrush - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric toothbrush which operates a toothbrush body by a driving device such as a motor provided in a handle.

[0002]

2. Description of the Related Art A conventional electric toothbrush has an operating part for switching "bus / cut / rolling" for switching the operating direction of a toothbrush body and an operating part for switching strength and weakness for switching an operating speed of the toothbrush body. Is provided.

[0003] As the strength switching operation section, there are well known a lead switch type using a magnet and a series switch type. In the lead switch method, a switching operation unit slidable in the longitudinal direction of the handle body is fitted around the outer periphery of the handle body, a magnet is fixed to the slide operation unit, and the magnet is fixed in the handle body. A changeover switch responsive to the movement is provided. In this lead switch system, the slide operation section is slid to the position of "strong / weak" displayed on the handle to adjust the strength to switch the strength.

On the other hand, in the case of the above-mentioned seesaw switch system, when one end of a strong / weak switching operation unit having a waterproof function is at an upper position, the other end is at a lower position and presses one of the operation units at the upper position. Thus, the handle is provided with a switch for switching the strength when the other portion is at the upper position.

[0005]

In the above-mentioned lead switch system, a switching operation section having a relatively large magnet fixed thereto is fitted to the handle body, so that the outer peripheral surface of the handle body and the outer periphery of the switching operation section are provided. A large step is formed between the surface and the surface. As a result, there is a problem that not only does the design not become smart, but also that the outer diameter of the switching operation section is large and operation is difficult.

[0006] In the above-mentioned seesaw switch system, one of the operation sections is always in the upper position to switch the strength, but the interval between the upper position and the lower position is small, and furthermore, rubber is used for waterproofing. Because the switch cover is covered, it is difficult to see which is in the upper position at a glance, and it is not possible to know which side has been switched without touching the operation unit. there were.

[0007] The present invention is to solve the above problem, not a large difference in level occurs between the strength switching operation portion and the handle member, also an electric can be formed compactly with reliably grasped by viewing the intensity switching state It is intended to provide a toothbrush.

[0008]

According to the present invention, a driving device provided in a handle body operates a toothbrush body provided at a tip of the handle body, and a large-diameter portion is formed in the handle body .
In the electric toothbrush for switching the driving device by the strength switching operation unit provided in the large diameter portion, a groove is provided on the outer peripheral surface of the handle body, and a ring-shaped strength switching operation unit is rotatably provided in the groove. A changeover switch of the driving device that is fitted to the outside and responsive to the strength switching operation unit is provided in the handle, a strength switching display unit is provided in the strength switching operation unit , and a recess is formed at an appropriate position in the groove. Along with
The recess is provided with a protrusion of the changeover switch,
A pair of left and right projections are formed on the inner peripheral surface of the replacement
The pair of protrusions are set so as to sandwich the changeover switch protrusion.
And can be selectively locked to the left and right side walls of the recess.
An electric toothbrush characterized in that it is formed .

[0009]

According to the above construction, when the ring-shaped strength switching operation section is rotated, the changeover switch is switched, and the operating speed of the toothbrush body by the driving device can be switched between high and low. Further, the switching state by the strength switching operation unit can be grasped by visually recognizing the strength switching display unit.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The handle body 2 provided with the toothbrush main body 1 at the front end has a large diameter portion 1A with the front end of the substantially cylindrical handle main body 3 having a slightly larger diameter.
And a frusto-conical cap 4 is detachably connected to the tip . A shaft 6 operated by a motor 5 serving as a driving device built in the handle body 3 together with the battery 5A protrudes substantially at the center of the front end of the handle body 3, and the shaft 6 is attached to the toothbrush body 1 on the shaft 6. The handle 7 is detachably provided. A rubber cap 8 for waterproofing is provided around the shaft 6, and the rubber cap 8 is fixed to the distal end surface of the handle body 3 via a cap ring 9. Further, a knob-shaped “bus / cut / rolling” switching operation unit 10 provided on the outer peripheral surface of the handle body 3 is used to move the toothbrush body 1 to the shaft 6.
Reciprocating motion, stopping, and switching the toothbrush body 1 in the axial direction of the shaft 6 in the axial direction of the shaft 6.
A “bus” display unit 12 provided by printing or the like on the handle 2 with a protruding display unit 11 provided on the switching operation unit 10,
The power switch 14 is closed by sliding on the "ring" display portion 13, and the built-in motion converter (not shown) is operated to rotate the rotating shaft (not shown) of the motor 5. The movement is switched to the movement of the bus or the rolling. The power switch 14 is opened by sliding the display unit 11 to the “OFF” display unit 15.

Further, between the tip of the handle 2 and the switching operation unit 10, a strength switching operation unit 21 is provided. The strength switching operation unit 21 is a ring shape slightly larger in diameter than the handle body 3, and is rotatably fitted to and attached to a groove 22 provided around the tip of the handle body 3. I have. A recess 23 is formed at an appropriate position of the groove 22, and a through hole 24 is formed at the center of the recess 23. still,
23A shows one side wall of the recess 23, and 23B shows the other side wall.
I have. A protruding strength switching display section 25 is provided on the outer peripheral surface of the strength switching operation section 21 facing the recess 23.
A “strong” display section 26 and a “weak” display section 27 are provided on one side of the handle body 2 near the strength switching display section 25. The changeover switch 28 provided in the through-hole 24 is rotated clockwise in FIG. 4 to open both contacts (not shown) provided on the frame 29 built in the handle 2. Conversely, it is closed by rotating counterclockwise. A projection 30 is formed eccentrically above the changeover switch 28, and a pair of left and right projections 31, 32 are integrally formed on the inner peripheral surface of the strength switching display 25 so as to sandwich the projection 30. Therefore, by rotating the strength switching operation section 21, the protrusion 30
The changeover switch 28 responds via the projections 31 and 32. In the drawing, reference numeral 33 denotes the strength switching operation unit 21.
Numeral 34 denotes an O-ring attached to the through hole 24.

FIG. 6 shows an electric circuit diagram of the battery 5A.
The motor 5, the power switch 14 and the resistor 35 are connected in series, and the changeover switch 28 is connected to the resistor 35 in parallel.

Next, the operation of the above configuration will be described. FIG.
As shown in FIGS. 5 (A), 5 (A) and 6 (A), in order to make the brushing state "weak", the strength is switched so that the strength switching display 25 is positioned at the "weak" display 27. The operation unit 21 is rotated. In this case, the changeover switch 28 is opened because the projection 30 is rotated while being guided by the pair of left and right projections 31 and 32 that rotate together with the strength switching operation unit 21. At this time, as shown in FIG.
The portion 23 is locked to one side wall 23A. Next, when the switching operation section 10 is slid so that the display section 11 is positioned at the "bus" display section 12 or the "rolling" display section 13, the power switch 14 is closed and the motor 5 is operated. The rotational force of the motor 5 can reciprocate or oscillate the shaft 6 and thus the toothbrush body 1 via a motion conversion device to perform tooth brushing.

FIG. 4B, FIG. 5B and FIG.
As shown in (B), in order to set the tooth brushing state to "strong", the strength switching operation unit 21 is rotated so that the strength switching display unit 25 is at the position of the "strong" display unit 26. In this case,
A pair of left and right rotating in the opposite direction with the strength switching operation unit 21
The projection 30 rotates while being guided by the projections 31 and 32
I do. At this time, as shown in FIG.
The portion 23 is locked to the other side wall 23B. In this case, the changeover switch 28 is closed to enable the motor 5 to rotate at a high speed. When the power switch 14 is closed in this state, the brushing can be performed in the "strong" state.

As described above, in the above-described embodiment, the groove 22 is provided around the outer peripheral surface of the handle body 2, and the ring-shaped strength switching operation section 21 is rotatably fitted to the groove 22 so as to be rotatable. Motor 5 for driving the toothbrush body 1 responsive to the switching operation section 22
By providing the changeover switch 28 in the handle body 2, the inner peripheral surface side of the ring-shaped strength switching operation portion 21 can enter the groove portion 22. For this reason, the outer peripheral surface of the intensity switching operation unit 21 can be made substantially the same as the outer peripheral surface of the handle body 2 and the design can be made smarter, and the outer diameter of the intensity switching operation unit 21 itself can be reduced. Since the size can be reduced, the strength switching operation unit 21 can be easily gripped.

Further, the ring-shaped intensity switching operation section
21 is provided with a protruding strength switching display 25, and the handle 2 is provided with a "strong" display 26 and a "weak" display 27,
Since "strong" and "weak" can be visually recognized easily and reliably, erroneous operations and the like can be eliminated.

Moreover, the tip of the substantially cylindrical handle body 3 is
By forming the large diameter part 1A as a slightly large diameter, gripping
When you do, the position of the strength switching operation unit 21 is easy to understand,
Even if the strength switching operation unit 21 is attached to the groove 22,
Workability does not decrease and it is easy to grasp.

Further , a concave portion 23 is formed at an appropriate position of the groove portion 22.
And the projection 30 of the changeover switch 28 is provided in the recess 23.
A pair of left and right projections 31 on the inner peripheral surface of the strength switching operation unit 21.
32, and a pair of left and right projections 31, 32 are provided with a changeover switch.
The projections 30 are sandwiched between the right and left side walls of the recess 23.
By being formed so that it can be selectively locked to 23A and 23B,
That is, as shown in FIG.
A projection sandwiched between a pair of left and right projections 31 and 32 by rotation
The switch 28 turns while the 30 is being guided,
When opened, at this time, one of the protrusions 32 is
A, the strength switching operation unit 21
The projection 30 of the changeover switch 28 may rotate excessively.
And the strength switching operation as shown in FIG. 5 (B).
The rotation of the portion 21 in the opposite direction causes the pair of left and right protrusions 31 and 32 to rotate.
Rotate in the opposite direction while the projection 30 sandwiched between them can be guided
When the changeover switch 28 is closed, the other projection
31 is locked to the other side wall 23B of the recess 23,
The strength changeover operation unit 21, and thus the protrusion of the changeover switch 28
30 does not rotate excessively as well and can be used with confidence
it can. Moreover, a pair of left and right projections 31 and 32 are changeover switches.
In addition to rotating the projections 30 of 28, one side and the other side wall 23 of the concave portion 23
It has the function of a stopper that locks on A and 23B.
Since no special parts are required, compactness can be achieved.
Wear.

It should be noted that the present invention is not limited to the above-described embodiment.
The adjustment may be performed in three steps, such as "weak," and the changeover switch does not open and close by turning, but can be variously modified. Further, the strength switching display section may be not a projection but a depression or a dot display by printing or the like. Further, the motor driving weak battery may be a primary battery or a rechargeable secondary battery.

[0020]

According to the present invention, a toothbrush body provided at the tip of the handle is operated by a driving device provided in the handle, and a large-diameter portion is formed on the handle, and the large-diameter portion is provided on the large-diameter portion . In the electric toothbrush for switching the driving device by a strength switching operation unit, a groove is provided on the outer peripheral surface of the handle body, and a ring-shaped strength switching operation unit is rotatably fitted to the groove, and the strength switching is performed. A changeover switch of the driving device responsive to an operation unit is provided in the handle , and a strength change display unit is provided on the strength change operation unit.
A recess is formed at an appropriate position in the groove, and the cut is formed in the recess.
A changeover switch projection is provided, and
A pair of left and right protrusions is formed on the peripheral surface, and the pair of left and right protrusions is
The switch is provided so as to sandwich the protrusion of the switch, and
By selectively locking the left and right side walls of the recess, it is possible to improve the design by making the outer peripheral surface of the strength switching operation part and the outer peripheral surface of the handle body almost flush with each other, and it is easy to hold, and furthermore, the strength switching state It can be grasped securely by visual recognition , and when it is gripped by the large diameter part, it switches between strong and weak
The position of the operation unit is easy to understand, improving operability.
A pair of left and right protrusions formed on the inner peripheral surface of the
In addition to actuating the protrusion of the changeover switch, the left and right of the recess 23
Stopper function by selectively locking to the side wall
Therefore, the size can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is an overall front view showing one embodiment of the present invention.

FIG. 3 is an exploded perspective view showing one embodiment of the present invention.

FIG. 4 is a front view of the embodiment of the present invention, in which a strength switching operation unit is cut away.

FIG. 5 is a longitudinal sectional view of a main part showing one embodiment of the present invention.

FIG. 6 is an electric circuit diagram showing an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Toothbrush main body 2 Handle body 5 Motor (drive device) 21 Strength switching operation part 22 Groove part 23 Depression 23A 23B Side wall 25 Strength switching display part 28 Changeover switch 30 Projection 31 32 Projection

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) A46B 1/00-17/08 A61C 17/22 G09F 9/00 364 H01H 3/02

Claims (1)

(57) [Scope of request for utility model registration] 1. A driving device provided in a handle body activates a toothbrush main body provided at a tip of the handle body , forms a large-diameter portion on the handle body , and controls a strength switching operation provided on the large-diameter portion. In the electric toothbrush for switching the driving device, a groove portion is provided on the outer peripheral surface of the handle body, and a ring-like strength switching operation portion is rotatably fitted to the groove portion, and is responsive to the strength switching operation portion. A changeover switch for the driving device is provided in the handle body, a strength changeover display section is provided in the strength changeover operation section , and a suitable
A recess is formed at the location, and the switching switch is inserted into the recess.
The left and right projections are provided on the inner peripheral surface of the
A pair of protrusions is formed, and the pair of left and right protrusions
It is provided so as to sandwich the projection of the switch and
An electric toothbrush formed so as to be selectively locked to a side wall .