JP2742442B2 - Electric toothbrush switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a switch provided on an electric toothbrush.

2. Description of the Related Art In recent years, there has been provided an electric toothbrush which is capable of performing brushing for moving a toothbrush in the axial direction of a handle thereof and rolling brushing for rotating the brush around an axis of the handle. .
In this case, switching between both types of polishing can be performed simultaneously by operating the switch handle of the power switch,
It becomes easy to use. On the other hand, if it is possible to switch between strong and weak in brushing, it is possible to brush with appropriate strength according to the user's preference and gum condition.

[Problems to be solved by the invention]

By the way, waterproofing is required in electric toothbrushing, but when the number of switches increases, it becomes difficult to secure waterproofness. Further, if the strength is switched by an erroneous operation, the gums may be damaged by some users. The present invention has been made in view of such a point, and the object thereof is not only to change the driving direction of the tooth brushing but also to switch between strong and weak, and it is easy to ensure waterproofness. An object of the present invention is to provide an electric tooth-brushing switch which is less likely to cause an erroneous operation.

[Means for Solving the Problems]

Thus, the present invention comprises a first switch handle for an electric on / off switch and a second switch handle for a high / low switch, wherein the first switch handle slides in the axial direction of the main body. The second switch handle is freely slidable in the circumferential direction of the main body, the switch switched by the first switch handle is a contact switch, and the strength switch switched by the second switch handle is a reed switch. The feature is that it is formed by. [Operation] According to the present invention, as compared with the first switch handle,
Since the second switch handle is slid in a direction in which it is difficult to operate, there is little possibility of inadvertent switching of strength and weakness. Also, the strength switching switch operated by the second switch handle Is constituted by a reed switch, there is no problem in securing waterproofness when providing this switch. [Embodiment] Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. This electric toothbrush includes an elongated cylindrical main body 1 containing a storage battery 5, a motor 40, and the like, and protrudes from the tip of the main body 1. As shown in FIG. 2, the main body 1 includes a toothed body (not shown) connected to the driving shaft 4 having covers 11 and 12 attached to an upper end and a lower end, respectively. Into the frame
Each component including the storage battery 5 and the motor 40 is mounted on the frame 13. The drive shaft 4 is also supported by the frame 13 and is connected to the motor 40 via a drive mechanism 41. The drive mechanism 41 here
Switches between bus (reciprocating linear) drive of the drive shaft 4 and rolling drive of the drive shaft 4 in accordance with the rotation direction of the motor 40, but the mechanical description of the switch is omitted here. By the way, two switch handles 2,
3 are arranged. The switch handle 2 is used to switch between bus drive and rolling drive by turning on / off the power supply and switching the rotation direction of the motor 40. It is slidably disposed on. In the figure 21
Is a finger hook that also serves as an index. The other switch handle 3 has a ring shape and is rotatable in the circumferential direction of the main body 1.
31 and the rotation range is limited by the contact with the side edge of the handle base 10. The switch handle 3 has a finger hook portion 31 located on the distal end side of the main body 1 with respect to the switch handle 2 and at a position shifted in the circumferential direction. Can be easily operated, whereas the operation of the switch handle 3 is arranged in a place where it cannot be operated without changing the grip or extending the finger. The contacts of the switches operated by the switch handles 2, 3 are configured as follows.
That is, as shown in FIG. 2 (a), the contact portions switched by operating the switch handle 2 include three contact plates 25, 26, on a substrate 24 disposed below the frame 13 accommodated in the main body 1. 27, and two short-circuit plates 28, 28 attached to the lower end of the interlocking plate 22. Interlocking plate 22
The upper end is connected to the switch handle 2 and moves up and down together with the switch handle 2. The upper end has a click portion for generating clicks at three places for the up and down movement. The contact plates 25 and 26 are connected to the respective poles of the motor 40, and the contact plate 27 is connected to the contact plate 25 via a resistor 36. The switch operated by the switch handle 3 is
As shown in FIG. 2 (c), the reed switch is disposed on the upper portion of the frame 13, and is turned on and off by a permanent magnet 30 attached to the switch handle 3. In FIG. 2, 50 is a charging terminal pin, 51 is a diode, 33 is a resistor, and 34 and 35 are conductive fittings. Now, when the switch handle 2 is in the off position and the switch handle 3 is in the weak position, FIG.
As shown in FIG. 5, both of the pair of short-circuit plates 28, 28 are contact plates 25,
If the switch handle 2 is operated only one step upward, even though it is not in contact with 26 and 27, as shown in FIG. 3 (b), the short-circuit plate 28 connected to the positive electrode of the storage battery 5 becomes the contact plate. 26
, And the short-circuit plate 28 connected to the negative electrode of the storage battery 5 comes into contact with the contact plate 27, so that the motor 40 starts to rotate in one direction.
Is caused to reciprocate in the direction of the axis (A in FIG. 1). When the switch handle 2 is operated further upward from the above state, as shown in FIG.
Contact the contact plates 25 and 26, respectively, and the motor 40 starts to rotate in the reverse direction.
Is reciprocated around its axis (B in the first). At these times, power is supplied to the motor 40 through the resistor 33 because the reed switch 32 is off. In addition, when the bus is driven, the rotation speed of the motor 40 is lower than that in the rolling drive because the resistor 36 is inserted. Regardless of the direction of rotation of the motor 40, if the switch handle 3 is operated to set it strongly, the permanent magnet 30 makes the reed switch 32 sensitive and conducts. (D) As shown in (e), power is supplied to the motor 40 without passing through the resistor 33. By the way, the reason why the switch handle 2 is easy to operate and the switch handle 3 is difficult to operate is that the user sets the strength according to his / her preference and the state of the gums, and then puts the teeth on the mouth. It is made in view of the usage of selecting between rolling drive and bus drive by inserting it inside, because if the strength is switched carelessly, the gums may be damaged. However, in order to further assure this, as shown in FIG.
And lock grooves 29, 2 in the switch handle 2.
When the switch handle 2 is set to the bus drive or the rolling drive by providing the lock handle 39, the lock projection 39 may be fitted into one of the lock grooves 29 to lock the switch handle 3. That is, only when the switch handle 2 is at the off position, the lock projection 39 comes out of the lock groove 29 and the switch handle 3 can be operated.

【The invention's effect】

As described above, in the present invention, the first switch handle is slidable in the axial direction of the main body, whereas the second switch handle is slid in the circumferential direction. Since the second switch handle must be slid in a direction in which the second switch handle is more difficult to operate than the switch handle described above, there is little danger of inadvertently switching between strong and weak, and the gums are not accidentally damaged. In addition, since the strength change switch operated by the second switch handle is constituted by a reed switch, there is no problem in securing waterproofness when providing this switch. The power on / off switch to be operated is not a reed switch but a normal contact switch. Those causing no destruction by inrush current at off which is a problem when using the switch.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention, and FIGS. 2 (a) and 2 (b).
(C) is a front view, a right side view, and a rear view of the same frame,
FIGS. 3 (a) to 3 (e) are circuit diagrams of the same embodiment, and FIG. 4 is a partial front view of another embodiment, wherein 1 is a main body, 2 and 3 are switch handles, and 32 is a reed switch.

Claims (1)

(57) [Claims] 1. A first switch for turning on / off a power supply.
Switch handle and the second for the changeover switch
The first switch handle is slidable in the axial direction of the main body, and the second switch handle is slidably provided in the circumferential direction of the main body, and is switched by the first switch handle. The electric tooth brushing switch, characterized in that the switch is a contact switch, and the strength changeover switch that can be switched by a second switch handle is formed by a reed switch.