JP2012150963A - Switching apparatus, and vibrating device for detachable toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanical switching apparatus allowing the user to perform switch operations with the thumb of the hand gripping the switch.SOLUTION: In the switching apparatus, a spring contact piece 91a of a relay fitting 91 faces a spring contact piece 30a of a battery negative terminal fitting 30'. A switch operating part 80' which is movable in the direction perpendicular to the spring contact piece 91a and has a lever part L, and a battery positive terminal fitting 40' having a springy rising and dropping part 47 on which a conical bent part m to be engaged with a latching part A is located on its end part side are provided. The latching part A has a first recessed part Ato be latched with the conical bent part m at a right rocking position of the switch operating part 80', a second recessed part Ato be latched with the conical bent part m at a left rocking position thereof, and a curved projecting part Z located between them. When the conical bent part m is engaged with the second recessed part A, the tip part of the lever part L presses the spring contact piece 91a to bring it into contact with the spring contact piece 30a.

Description

  The present invention relates to a mechanical switch device, and more particularly to a vibration device for a detachable toothbrush using the same.

  Japanese Patent Application Laid-Open No. 2003-93415 discloses an electric toothbrush using a vibration motor having an eccentric weight. This electric toothbrush is composed of a gripping body that houses two batteries in series therein, and a toothbrush body attached to one side of the gripping body, and a lid that also serves as a switch is provided at the outer end of the gripping body. It is attached by a fastening member such as a screw so that the switch can be operated and the battery can be replaced. This switch is provided in the middle of a circuit constituted by a built-in vibration motor and battery, and is a rotary type or a push button type in a fastening member.

JP 2003-93415 (0011-0013, FIG. 1)

  However, since the above switch is provided not on the toothbrush side of the gripping body but on the outer end (on the opposite toothbrush side), when the gripping body is gripped with one hand, the switch is turned on / off with the other hand. In addition, it is impossible to operate the switch with the thumb of the gripped hand, which is inconvenient. In addition, the toothbrush body is a special product that has a built-in vibration motor in the cavity near the neck and joins the fitting cylinder to one side of the gripping body. In addition to being forced to replace the whole, it is necessary to expose the vibration motor, which is an internal component, and then incorporate it into a new toothbrush body.

  Accordingly, a first object of the present invention is to provide a mechanical switch device that can be operated by a thumb operation of a gripped hand.

  The second object of the present invention is to provide an electric toothbrush that can eliminate the need to remove the vibration motor in the case when replacing the toothbrush.

  The present invention provides a switch device having a first metal fitting connected to one of the electrodes of the battery and its power supply object, and a second metal fitting connected to the other electrode of the battery and the power supply object. Switch operation having a lever portion that is positioned so that the elastic contact portion of the first metal fitting and the elastic contact portion of the second metal fitting face each other and can be displaced in a direction substantially perpendicular to the elastic contact portion of the first metal fitting And a third metal fitting having a leaf spring piece on the end side of the angled bent portion that engages with the latching portion of the lever portion, and the latching portion is provided on the distal end side of the lever portion, A first recessed portion in which the angle-folded portion is relatively fitted at the first swinging position and self-positions the latching portion, and the lever portion is provided on the opposite end side from the first recessed portion, and the switch operating portion 2 Angle bent portion at the swing position A second recess that relatively fits and self-positions the latching portion, and a mountain-shaped bent portion with respect to the first recess and the second recess between the first swing position and the second swing position of the switch operating portion When the angled portion is relatively inserted into the second recess, the tip of the lever portion presses the elastic contact portion of the first metal fitting to elastically contact the second metal fitting. It is made to contact a part.

  Although it can be switched on / off simply by swinging the switch operation part by the thumb operation of the gripped hand, even in the off state where the elastic contact part of the first metal part is separated from the elastic contact part of the second metal part, Even when the elastic contact portion of the first metal fitting is in contact with the elastic contact portion of the second metal fitting, the angled bent portion of the third metal fitting is placed in the first concave portion or the second concave portion of the latching portion in the natural state. Because of the equivalent engagement relationship, the spring contact of the first metal fitting and the elastic contact portion of the second metal fitting can be suppressed, and the spring characteristic of the leaf spring piece of the third metal fitting can be reduced. Can be suppressed, and the durability of the mechanical switch can be enhanced.

  The switch device preferably includes a spring retainer that suppresses the bending of the leaf spring piece toward the lever portion. Even if the first concave portion of the latching portion lifts the angled bent portion of the third bracket excessively in the off state, the plate spring piece that holds the spring is pressed down, so that the amount of bending of the plate spring piece is suppressed and plastic deformation is performed. Can be prevented.

  The switch operation unit includes a pair of opposed leg portions having opposite support shafts, a lever portion extending in both directions perpendicular to the support shaft, and a lever curved from one end of the lever portion. It is desirable to have the part integrally. Since the displacement of the lever portion can be realized by the seesaw operation of the lever portion, the switch operation surface can be arranged on one side of the battery or the power supply object.

  Here, if the radial line is defined as a line passing through the apex of the angle bent portion and the rotation center of the support shaft in the free state of the leaf spring piece, the opening angle with respect to the radial line on the lower end side slope of the angle bent portion is the angle bent portion It is desirable that it is larger than the opening angle with respect to the radial direction line of the slope on the opposite lower end side. In order to secure the hooking between the chevron bent portion and the first concave portion or the second concave portion, it is necessary to narrow the angle of the chevron bent portion to increase the fitting depth. Even if the opening angle from the radial direction line is small, the leaf spring piece can be pushed and bent toward the anti-latch portion, so that it is possible to switch from the off state to the on state without any trouble. On the other hand, when the opening angle from the radial line of the lower end side slope is large, the drag from the upper curved surface of the curved convex portion to the lower end side slope accompanying the rising of the latching portion causes the leaf spring piece to move to the counter latching portion side. The upper curved surface of the curved convex part slides on the slope on the lower end side by pushing and bending, and reaches the top of the mountain-shaped bent part and slips through, so that the mountain-shaped bent part easily falls into the first recess and reliably turns from the ON state to the OFF state. Can be switched to.

  As a detachable toothbrush vibration device, the above switch device is used, and the power supply object is a vibration motor having an eccentric weight, and first to third metal fittings are arranged between the vibration motor and the battery. The case body includes a first bifurcated claw portion that detachably holds the neck portion of the toothbrush and a second bifurcated claw portion that detachably holds the handle portion of the toothbrush. In preparation.

  Since vibration from the vibration motor is well transmitted from the first bifurcated claw portion to the neck portion of the toothbrush through the case body, a commercially available toothbrush can be used as an electric toothbrush. One detachable toothbrush vibration device can be shared by several family members, and the price can be reduced compared to the case where each person purchases a conventional electric toothbrush. Further, when replacing the toothbrush, the vibration motor is not exposed and remains built in the case main body, and can be easily replaced only by an attaching / detaching operation by the bifurcated claw portion.

  Here, when the case body has a tail portion extending rearward from the second bifurcated claw portion and straddling the handle portion, even when a finger of one hand holding the handle portion is inadvertently hooked on the second bifurcated claw portion. Since the second bifurcated claw portion is not at the end of the handle portion, it is difficult to come off from the handle portion.

  In addition, when the case has a motor cover that closes the vibration motor housing portion of the case body, the support shaft is rotatably supported by the vibration motor housing portion and the motor cover, and the operation plate portion covers the motor cover, the lever In the sliding of the part, there are a case where the tip abuts against the case main body and a case where the end of the operation part abuts against the motor cover, and the sliding stroke of the lever part can be limited.

  When this motor cover has a spring retainer that suppresses the bending of the leaf spring piece toward the lever portion, the number of parts can be reduced.

  It is desirable that the vibration motor housing portion has a rotation preventing portion that limits a rotation angle about the support shaft of the switch operation portion. In the ON state by this detent portion, the tip of the latch portion does not excessively press the elastic contact portion of the first metal fitting, and plastic deformation of the elastic contact portion of the first metal fitting and the elastic contact portion of the second metal fitting is prevented. Can be suppressed. In the off state, the first recess of the latching portion does not excessively lift the angled bent portion of the third metal fitting, and the plastic deformation of the third metal fitting can be suppressed.

  It is desirable to have an outer cover that closes both housing portions by interposing an O-ring at an opening edge that goes around the battery housing portion and the vibration motor housing portion of the case body. The waterproof structure can be enhanced.

  According to the switch device of the present invention, it is possible to realize a compact storage structure with a small number of parts, and the switch operation is possible by the thumb operation of the gripped hand. According to the vibration device for a detachable toothbrush of the present invention, a commercially available toothbrush can be used as an electric toothbrush.

(A) is a front view showing an electric toothbrush using the vibration device for a detachable toothbrush according to Embodiment 1 of the present invention, (B) is a right side view of the electric toothbrush, and (C) is a left side surface of the electric toothbrush. FIG. (A) is a front view showing the detachable toothbrush vibration device, (B) is a right side view of the detachable toothbrush vibration device, (C) is a left side view of the detachable toothbrush vibration device, D) is a plan view of the detachable toothbrush vibration device, and (E) is a bottom surface of the detachable toothbrush vibration device. (A) is the perspective view which looked at the vibration device for detachable toothbrushes from the top, (B) is the perspective view which looked at the vibration device for detachable toothbrushes from the bottom. It is an assembly perspective view of the detachable toothbrush vibration device. (A) is the perspective view which looked at the case main body of the detachable toothbrush vibration apparatus from the top, (B) is the perspective view which looked at the case main body from the bottom. (A) is a front view of the case body, (B) is a right side view of the case body, and (C) is a left side view of the case body. (A) is a plan view of the case body, (B) is a sectional view taken along line bb in (A), and (C) is cut along line cc in (B). (D) is a cutting arrow view showing a state cut along the line dd in (B). (A) is a longitudinal sectional view showing a state in which a vibration motor, a motor cover, an insulating switch operation section and a terminal fitting are built in the case body, and (B) is a vibration motor and an insulating switch built in the case body. It is a front view which shows the relationship between an operation part and a terminal metal fitting. (A) is a perspective view showing a battery minus terminal fitting built in the case body, (B) is a front view of the battery minus terminal fitting, and (C) is a left side view of the battery minus terminal fitting. (A) is a perspective view showing a battery plus terminal fitting built in the case body, (B) is a front view of the battery plus terminal fitting, and (C) is a perspective view of the battery plus terminal fitting seen from another angle. FIG. (A) is a perspective view showing a motor plus terminal fitting built in the case body, (B) is a front view of the motor plus terminal fitting, and (C) is a perspective view of the motor plus terminal fitting seen from another angle. FIG. (A) is a perspective view showing the arrangement relationship of the vibration motor, a part of the battery minus terminal fitting, the motor plus terminal fitting and the battery plus terminal fitting, and (B) is a front view showing the arrangement relationship. (A) is the perspective view which looked at the motor cover from the top, (B) is the perspective view which looked at the motor cover from the bottom. (A) is a plan view of the motor cover, (B) is a front view of the motor cover, (C) is a right side view of the motor cover, (D) is a bottom view of the motor cover, and (E) is ( (D) A cutting arrow view showing a state cut along line ee in (D), (F) is a cutting arrow view showing a state cut along line ff in (D), and (G) is (D). It is a cutting arrow line view which shows the state cut | disconnected by the inside gg line. (A) is the perspective view which looked at the insulation switch operation part from the top, (B) is the perspective view which looked at the insulation switch operation part from the bottom. (A) is a plan view of the insulating switch operation section, (B) is a front view of the insulating switch operation section, (C) is a right side view of the insulating switch operation section, and (D) is the same insulation function. The left side view of a switch operation part, (E) is a cutting arrow line view which shows the state cut | disconnected along the ee line in (A). (A)-(D) are sectional drawings which show the procedure in which the same motor cover and the same insulative switch operating part are combined and incorporated in the case body. (A) is a plan view showing an outer cover of the vibration device for the electric toothbrush, (B) is a right side view of the outer cover, (C) is a left side view of the outer cover, and (D) is a view of the outer cover. Front view, (E) is a bottom view of the outer cover, (F) is a cut arrow view showing a state cut along line ff in (D), and (G) is g in (D). The cutting arrow figure which shows the state cut | disconnected along -g line | wire, (H) is the cutting | disconnection arrow line view which shows the state cut | disconnected along the hh line | wire in (D). (A) is sectional drawing which shows the OFF state of the vibration motor of the vibration device for electric toothbrushes, (B) is sectional drawing which shows the halfway state which transfers a vibration motor from an ON state to an OFF state, (C) is a vibration motor It is sectional drawing which shows an ON state. It is a disassembled front view which shows the vibration device for detachable toothbrushes which concerns on Example 2 of this invention. (A) is sectional drawing which shows the OFF state of the vibration motor of the vibration device for electric toothbrushes, (B) is sectional drawing which shows the halfway state which transfers a vibration motor from an ON state to an OFF state, (C) is a vibration motor It is sectional drawing which shows an ON state. (A) is a partial perspective view which shows the state which drops a spindle in the bearing part of the vibration motor accommodating part in the vibration apparatus for electric toothbrushes, (B) is a partial perspective view which shows the drop completion state. (A) is a fragmentary perspective view which shows the dome-shaped motor cover in the vibration apparatus for electric toothbrushes, (b) is a fragmentary perspective view which shows the state which covered the same dome-shaped motor cover on the vibration motor accommodating part. (A) thru | or (C) is the elements on larger scale which show sequentially the relationship between the engaging part of the switch operation part accompanying the ON operation in the vibration device for electric toothbrushes, and the mountain-shaped bending part of the 1st terminal metal fitting, (D) thru | or (F) is the elements on larger scale which show sequentially the relationship between the engaging part of the switch operation part accompanying the OFF operation in the vibration device for electric toothbrushes, and the mountain-shaped bending part of the 1st terminal metal fitting. (A) is a front view which shows the 1st terminal metal fitting in the vibration apparatus for electric toothbrushes, (B) is an enlarged front view which shows another 1st terminal metal fitting.

  Next, an embodiment of a detachable toothbrush vibration device according to the present invention will be described with reference to the accompanying drawings.

  The electric toothbrush 2 using the detachable toothbrush vibration device 1 of this example is one in which the detachable toothbrush vibration device 1 is mounted on the toothbrush 3 as shown in FIG. First, the toothbrush 3 may be a commercially available product. In particular, in this example, the cartridge-type brush bristles disclosed in Japanese Patent No. 4146729 is a toothbrush that can be replaced as appropriate. A replacement brush unit 3d that can be attached to and detached from the head portion 3c extending from the portion 3a via the handle portion 3b having a reduced diameter is provided. The housing of the detachable toothbrush vibration device 1 includes a case body 10 made of resin and an outer cover 20, and the case body 10 has a hollow portion S that the handle portion 3 b of the toothbrush 3 can hold through, A first bifurcated claw portion 11 that detachably and elastically holds a neck portion 3e on the handle portion 3a side of the handle portion 3b of the toothbrush 3 at its tip, and a midway portion 3f of the handle portion 3a of the toothbrush 3 at its abdomen. The second bifurcated claw portion 12 that detachably and elastically holds the handle portion protrudes from the side surfaces 10a and 10b toward the bottom surface side, and the other side surfaces 10a and 10b have handle portions so that the ends of the other side surfaces 10a and 10b can grip the handle portion 3a. It terminates on the inside to match the contour shape of 3a. The case body 10 is generally mounted across the handle portion 3a, but also has a tail portion T extending rearward from the second bifurcated claw portion 12 and straddling the handle portion 3a. Even when a finger of one hand holding the handle portion 3a is inadvertently hooked on the second bifurcated claw portion 12, the second bifurcated claw portion 12 is not at the end of the handle portion 3a, and thus is difficult to come off from the handle portion 3a.

  The elongated rectangular housing recess of the case body 10 is divided into a vibration motor housing portion 13 and a battery housing portion 14, and an intermediate between the vibration motor housing portion 13 and the battery housing portion 14 is a terminal fitting loading portion 15. It has become. As shown in FIGS. 4 and 8, a battery minus terminal fitting 30 and a battery plus terminal fitting 40 are incorporated in the battery housing portion 14.

As shown in FIG. 9, the battery negative terminal fitting 30 has an end plate portion having a folded elastic piece 31 a that presses and contacts the negative electrode of the dry battery B and a return piece 31 b that functions to prevent the battery 14 from contacting the wall 14 a of the battery housing portion 14. 31, a bottom plate portion 32 which is bent from the end plate portion 31 and extends in the longitudinal direction and fits on the bottom surface of the battery housing portion 14, and a vibration motor 60 having an eccentric weight W which is bent at the other end of the bottom plate portion 32. The negative terminal 61 is integrally provided with a soldering piece 33a to be soldered and an end plate part 33 having a return piece 33b that hits the wall of the vibration motor housing part 13 and performs a retaining function. The end plate portion 31 is inserted along the _first guide groove G1 shown in FIG.

As shown in FIG. 10, the battery plus terminal fitting 40 has a pair of return pieces 41 a that hit the first hollow partition wall 14 b that partitions the battery housing portion 14 and that serves to prevent the battery plus terminal plate 40 and the bottom plate portion of the battery minus terminal fitting 30. A leg piece 41 having a notch 41b opened to a width that does not contact 32, a convex part 42 that is press-formed on the upper part of the leg piece part 41 and press-contacts the positive electrode of the dry battery B, and the convex part 42 and a folded elastic piece 43 formed by bending from the upper part of 42. The leg piece portion 41 is inserted along the _second guide groove G2 shown in FIG.

A second hollow partition wall 14c is formed between the first hollow partition wall 14b and the wall of the vibration motor accommodating portion 13, and the second hollow partition wall 14c serves as a relay terminal fitting. A motor plus terminal fitting 50 is attached. The motor plus terminal fitting 50 has a notch portion opened to a width that does not contact the pair of return pieces 51 a that hit the second hollow partition wall 14 c and perform a retaining function and the bottom plate portion 32 of the battery minus terminal fitting 30. A leg piece 51 having 51b, a convex part 52 that is press-formed on the upper part of the leg piece part 51 and press-contacts a partition wall part 84 of an insulating switch operating part 80 to be described later, and a bent part from the upper part of the convex part 52 A solder pile 53 is formed and soldered to the plus terminal 62 of the vibration motor 60. The leg piece 51 is inserted along the _third guide groove G3 shown in FIG. As shown in FIG. 12, the convex portion 52 and the folded elastic piece 43 face each other and elastically contact each other between the first hollow partition wall 14b and the second hollow partition wall 14c.

  The vibration motor 60 is fitted and installed in the vibration motor housing 13 formed in the lower half, and the minus terminal 61 and the plus terminal 62 protruding from the anti-eccentric weight end of the motor case face the battery B side. The vibration motor 60 is covered and sealed with a resin dome-shaped motor cover 70 shown in FIGS. Here, the dome-shaped motor cover 70 integrally includes an additional ceiling portion 72 that seals the solder connection portions of the terminals 61 and 62 and the solder piles 33 a and 53, in addition to the ceiling portion 71 that covers the vibration motor 60. Further, the insulating switch operation unit 80 shown in FIGS. 15 and 16 is covered on the dome-shaped motor cover 70.

  The insulating switch operation unit 80 is a molded product of an insulating resin, and a pair of opposed leg portions 81 and 82 having opposed shafts 81a and 82a, and the support shafts 81a and 82a straddling them. An insulator 83 extending in both directions in the orthogonal direction and a partition wall 84 curved in an L shape from one end of the insulator 83 are integrally provided. An on button portion 83a is bulged on the side of the partition wall portion 84 on the lever portion 83, and an off button portion 83b is bulged on the opposite side. The support shafts 81 a and 82 a are rotatably fitted between bearing holes 71 a and 71 b formed at the lower end of the dome-shaped motor cover 70 and the upper end edge 13 a of the vibration motor housing portion 13.

  When the dome-shaped motor cover 70 and the insulating switch operation unit 80 are assembled to the case body 10, the insulator 83 of the insulating switch operation unit 80 is on the dome-shaped motor cover 70 as shown in FIG. As shown in FIG. 17 (a), the gap between the opposing leg portions 81 and 82 of the insulating switch operating portion 80 is added to the ceiling portion 72 with a width narrower than that of the ceiling portion 71. As shown in B), the support shafts 81a and 82a can be fitted in contact with the hole walls of the bearing holes 71a and 71b. After that, as shown in FIG. 17C, the partition wall 84 is placed between the convex portion 52 and the folded elastic piece 43 in the terminal fitting loading portion 15 while maintaining the posture in which the partition wall portion 84 is pushed up by pressing the off button 83b. At the same time, the dome-shaped motor cover 70 is fixed to the upper end edge 13a of the vibration motor housing 13 where the adhesive has been applied, as shown in FIG. Since the notched bearing holes 71a and 71b are surrounded by the upper edge 13a, the support shafts 81a and 82a are not detached from the bearing holes 71a and 71b.

  Here, the partition wall 84 has a guide groove 84 a that relatively guides and guides the distal end side of the folded elastic piece 43 with the seesaw motion of the insulating switch operation unit 80. The partition wall 84 includes a through hole H in which the convex portion 42 is fitted on the base side and a blind hole h in which the convex portion 42 is fitted on the tip side.

As shown in FIGS. 4 and 5, an O-ring 17 is fitted into the upper edge of the wall surrounding the vibration motor housing part 13, the battery housing part 14, and the terminal fitting loading part 15 of the case body 10. Further, as shown in FIG. 8A, outer cover hooking claws K ₁ and K ₂ are integrally formed on both sides of the case body 10 in the longitudinal direction. Further, as shown in FIG. 18, the outer cover 20 covering the case body 10 has a semi-cylindrical shape, and latching protrusions P ₁ , P engaging the outer cover latching claws K ₁ , K ₂ at both ends thereof. ₂ and a rectangular window 21 at a corresponding position facing the on-button part 83a and the off-button part 83b of the operation plate part 83. The rectangular window 21 is closed with a waterproof seal 22 with a switch operation mark attached to the periphery thereof.

  In the detachable toothbrush vibration device 1 having such a configuration, vibration from the vibration motor 60 is well transmitted from the first bifurcated claw portion 11 to the neck portion 3e of the toothbrush 2 through the case body 10, and thus a commercially available toothbrush. But it can be used as an electric toothbrush. Further, when replacing the toothbrush 2, the vibration motor 60 is not exposed and remains built in the case body 10, and can be easily replaced by an attaching / detaching operation using the bifurcated hook portions 11, 12. One detachable toothbrush vibration device 1 can be shared by several family members, and the price can be reduced compared with the case where each person purchases a conventional electric toothbrush.

  Further, in the mechanical switch device according to the present example, as shown in FIG. 19A, when the convex portion 52 is fitted in the blind hole h of the partition wall portion 84, the convex portion 52 is not in contact with the folded elastic piece 43. Therefore, the switch-off state can be maintained, and when the on-button portion 83a is pushed in through the waterproof seal 22 with the thumb of the hand holding the case body 10 from such a state, the switch operation portion 80 swings in the arrow X direction. Then, as shown in FIG. 19B, the blind hole h comes out relatively from the convex portion 52, and this time, the convex portion 52 is fitted into the through-hole H as shown in FIG. Since the front end side also enters from the opposite side of the through hole H, the convex portion 52 and the folded elastic piece 43 are elastically pressed in the through hole H, and the switch-on state can be maintained. On the other hand, in the switch-on state of FIG. 19C, the switch operation unit 80 swings in the direction of the arrow Y by pushing the off button portion 83b with the fingertip, and as shown in FIG. 52 and the return elastic piece 43 relatively come out of the through hole H, and this time, as shown in FIG. 19A, the convex portion 52 fits into the blind hole h and is in a non-contact state with the return elastic piece 43. The off state can be maintained.

  In this manner, the switch can be kept on or off by selectively fitting with respect to the through hole H or the blind hole h of the convex portion 52, and the switch with the thumb while holding the case body 10 with one hand. It can be operated and contributes to improved usability. Moreover, since it can be comprised with the two terminal metal fittings 40 and 50 and the switch operation part 80 in which the partition part 84 interposes between these, the terminal metal fitting loading part 15 may suffice as a substantially compact storage structure.

  In this example, since the guide groove 84a is formed in the partition wall 84, the escape of the folded elastic piece 43 can be restricted by the guide groove, and the deformation of the folded elastic piece 43 due to long-term use can be suppressed. By suppressing blurring in the sliding direction, the accuracy of fitting the convex portion 42 with the blind hole h or the through hole H can be maintained.

  The insulative switch operation unit 80 integrally has a lever part 83 and a partition wall part 84 that is curved in an L shape, and the partition part 84 can be slid by the seesaw operation of the lever part 81. It can be arranged on one side and is suitable for thumb operation.

  The convex portion 52 fits shallowly with the blind hole h, and the convex portion 52 fits deeply with the through hole H, but the through hole H is formed on the base side of the partition wall portion 84, so it fits into the partition wall portion 84. Excessive stress is less likely to occur at the time, and durability associated with switch operation can be improved.

  In this example, the dome-shaped motor cover 70 that closes the vibration motor housing portion 13 of the case body 10 is provided, and the support shafts 81a and 82a are rotatably supported by the vibration motor housing portion 13 and the dome-shaped motor cover 70, Since the insulator part 81 is covered on the dome-shaped motor cover 70, the end of the insulator part 81 is opposite to the dome-shaped motor cover 70 when the tip of the partition part 84 is in contact with the case body 10. The sliding stroke of the partition wall 84 can be limited.

  And it has the outer cover 20 which interposes the accommodation part by interposing the O-ring 17 in the opening edge which goes around the battery accommodating part 14 and the vibration motor accommodating part 13 of the case main body 10, and this outer cover 20 is an operation board part. 81, the operation plate 81 is sandwiched between the dome-shaped motor cover 70 and the outer cover 20 so that the rectangular window 21 faces the on-button portion 83a and the off-button portion 83b. The seesaw can be operated through the 21 waterproof seals 22 and has a double waterproof structure with the O-ring 17 and the waterproof seal 22.

  Although the detachable toothbrush vibration device 1 includes the vibration motor 60, various detachable prime movers can be realized by using a geared motor instead.

  The off state of this type of mechanical switch device is constant compared to the on state, but in the detachable toothbrush vibrator 1 of the first embodiment, as shown in FIG. 40 is elastically sandwiched between the folded elastic piece 43 and the convex portion 52 of the motor plus terminal fitting 50, so that the partition wall portion 84 on the distal end side of the switch operating portion 80 is elastically sandwiched between the folded elastic piece 43 and the motor plus terminal fitting 50. Since the elastic deformation is in a normal state due to the drag force from the partition wall 84, the spring property is easily reduced, and in the ON state shown in FIG. 19C, the folded elastic piece 43 and the convex portion 52 are in a free state. There is a risk that it will be difficult to return to each other, and it will be difficult to press contact with each other in the through hole H.

  Therefore, the detachable toothbrush vibration device according to the second embodiment is characterized by including a contact spring that can maintain a free state in an off state, as described below.

  That is, as shown in FIG. 20, the detachable toothbrush vibration device 1 ′ of this example includes a case main body 10 ′, a vibration motor 60 disposed in the vibration motor accommodating portion 13 of the case main body 10 ′, and a case main body 10 ′. The battery minus terminal fitting 30 ′ disposed in the longitudinal direction in the battery housing portion 14, the dry battery B housed in the battery housing portion 14, and the first hollow partition wall 14 b of the case body 10 ′ are inserted into the plus of the vibration motor 60. A battery plus terminal fitting 40 'connected to the terminal 62 and a relay fitting connected to the spring contact piece 30a of the battery minus terminal fitting 30' by connecting to the minus terminal 61 of the vibration motor 60 and pushing and pulling the switch operating portion 80 '. 91, a dome-shaped motor cover 70 ′ covering the vibration motor 60, a switch operation unit 80 ′, an O-ring that is aligned with the opening edges of the vibration motor storage unit 13 and the battery storage unit 14. A grayed 17, 'and, the outer cover 20' the outer cover 20 sandwich the O-ring 17 made of waterproof seal 90. sealing the push button portion 23 of the.

In FIG. 21, the rotation center of the switch operation unit 80 ′ is represented by O. The spring contact piece 30 a of the battery minus terminal fitting 30 ′ and the spring contact piece 91 a of the relay fitting 91 are positioned facing each other. The switch operating portion 80 'has a lever portion L that is curved in an L shape from one of the lever portions 83' and can be displaced in a direction substantially perpendicular to the spring contact piece 30a. The lever portion L has a latching portion A that engages with the angled bent portion m of the battery plus terminal fitting 40 '. This latching portion A is provided on the front side, and the V-shaped angled bent portion m is relatively fitted at the off-rotation position (FIG. 21A) of the switch operation unit 80 'so that the latching portion A A first recessed portion A ₁ for self-positioning A, and a chevron bent portion m is provided at the on-rotation position (FIG. 21 (C)) of the switch operating portion 80 ′ provided on the opposite end side from the first recessed portion A ₁ . The first recess A ₁ and the second recess A ₂ between the second recess A ₂ that relatively fits and self-positions the latching portion A, and the _first and second rotation positions of the switch operating portion 80 ′. and a curved convex portion Z which divide the fitting Yamagata bent portion m for the second recess a _2. Yamagata bent portion m is the spring contact piece 91a is pushed in the retaining portion A of the tip relay bracket 91 hanging in relatively fitted in the second recess A ₂ to the spring contact piece 30a of the battery minus terminal fitting 30 ' It comes to contact.

State shown in FIG. 21 (A) is off state, the switch operation unit 80 'is then per degree at the leftward swing limit position as described later, and a first concave portion A ₁ and Yamagata bent portion m In the fitted state, the spring contact piece 30 a of the battery minus terminal fitting 30 ′ and the spring contact piece 91 a of the relay fitting 91 are separated from each other in a natural state, and the vibration motor 60 is not supplied with power.

Here, as shown in FIG. 25, the battery plus terminal fitting 40 ′ is formed through a rising portion 45 having a bent portion 44 installed on the bottom surface of the battery housing portion 14 and an inverted U-shaped portion 46 on the upper portion thereof. The falling part 47, the angled bent part m formed on the lower end side of the falling part 47, and the lower terminal side of the rising part 45 are extended and soldered to the plus terminal 62 of the vibration motor 60. The terminal connection piece 48 is integrally formed, and the first hollow partition wall 14b is sandwiched between the rising portion 45 and the falling portion 47, and the falling portion 47 is reversed as shown in FIG. around a boundary point P between the U-shaped portion 46 can be bent to the rising portion and the anti-rising portion, falling portion 45 standing in the case of oFF state fitted in the substantially first recess a ₁ in a free state Positioning the switch operation unit 80 ' .

In this OFF state, as shown in FIG. 21B, when the ON button portion 23a of the push button portion 23 is pressed with the fingertip as indicated by the arrow 1, the switch operating portion 80 'is rotated at the center of rotation O as indicated by the arrow 2. Since it swings to the right around, the upper slope of the first recess A ₁ of the latching part A pushes away the upper slope of the angled bent part m and the rising part 45 is pushed and bent, and the angled bent part m as indicated by the arrow 3 Is pushed up to the curved convex portion Z, and further, when the ON button portion 23a is pressed with the fingertip, the tip of the latching portion A pushes the spring contact piece 91a of the relay fitting 91 with the arrow 4 as shown in FIG. As shown by the arrow 5, the ridge-shaped bent portion m falls from the curved convex portion Z into the second concave portion A ₂ , while being pressed so that it is brought into contact with the spring contact piece 30 a of the battery negative terminal fitting 30 ′. The bending of the falling part 47 is self Since returning to the state, Yamagata bent portion m is hooked to the switch operation unit 80 '.

  Thus, in the constant off state, the spring contact piece 30a of the battery minus terminal fitting 30 ', the spring contact piece 91a of the relay fitting 91, and the falling portion 47 of the battery plus terminal fitting 40' are in a natural state. Therefore, it is possible to prevent the spring property from being deteriorated and to improve the reliability of the mechanical switch.

  The switch operation unit 80 in FIGS. 15 and 16 has support shafts 81a and 82a inside the opposing leg portions 81 and 82, but the switch operation unit 80 'in this example has a tapered shape as shown in FIG. Support shafts 81b and 82b are provided outside the opposing leg portions 81 and 82, and bearing recesses 13b and 13c are located on the inner wall on the upper end edge (opening edge) 13a side of the vibration motor housing portion 13. The bearing recesses 13b and 13c are formed so as to be recessed in the leg receiving recesses 13d and 13e in which the narrower opposing leg portions 81 and 82 are accommodated. The dome-shaped motor cover 70 'is also formed with notches K corresponding to the leg receiving recesses 13d and 13e and the bearing recesses 13b and 13c as shown in FIG. The support shafts 81b and 82b of the switch operating portion 80 'are dropped into the bearing recesses 13b and 13c through the notch K as shown in FIG. Is also dropped from above into the leg receiving recesses 13d, 13e. Since the leg receiving recesses 13d and 13e or the narrower opposing leg portions 81 and 82 in the notch K hit the rotation of the switch operation portion 80 'around the support shafts 81b and 82b, The swing range of the switch operation unit 80 'has a left and right limit position.

As described above, since the switch operating portion 80 ′ has the right swing limit position, the tip of the latching portion A excessively presses the spring contact piece 91a of the relay fitting 91 in the ON state shown in FIG. Therefore, the plastic deformation of the spring contact pieces 91a and 30a can be prevented. Further, 'since it has a left rocking limit position, FIG. 21 (A) to the stop portion first recess A ₁ is battery plus terminal fitting A 40 hanging in the off state shown' switch operating section 80 angled bent portions m of Therefore, the plastic deformation of the falling portion 47 can be suppressed.

The dome-shaped motor cover 70 'has a lever through hole H within the range of the first hollow partition wall 14b and the second hollow partition wall 14c, and the tip end side of this opening edge is shown in FIG. As shown in the figure, a spring retainer 73 is formed which is thick and suppresses the amount of bending of the falling portion 47 of the battery plus terminal fitting 40 '. Also Figure 21 first recess A ₁ of the retaining portion A over in the off state shown in (A) is lifted excessively Yamagata bent portions m of the battery plus terminal fitting 40 ', pressing the down portion 47 spring retainer 73 stands Therefore, the amount of bending of the falling portion 47 can be suppressed and plastic deformation can be prevented.

As shown in FIG. 24A, the apex of the mountain-shaped bent portion m of the falling portion 47 in the free state is located on the radial line R from the rotation center O. Here, the latching portion A and the mountain-shaped bent portion When the engagement / disengagement operation with respect to the portion m is verified, in the on operation in which the latching portion A descends in the direction of the arrow, as shown in FIG. In order to press and bend the falling portion 47 to the right by pressing the lower end side slope m ₁ , the curved convex portion Z rides on the apex of the mountain-shaped bent portion m as shown in FIG. 24B, and is shown in FIG. As described above, the bending of the falling portion 47 returns straight, the lower slope m ₂ of the mountain-shaped bent portion m slides into the upper curved surface of the curved convex portion Z, and the mountain-shaped bent portion m falls into the second recessed portion A ₂ and stops. The spring contact pieces 91a and 30a are in contact with each other and turned on. It made.

On the other hand, FIG. In the on-operation stopping portion A over rises in the arrow direction in the on-state of 24 (D), the lower end without slipping on the lower end side inclined surface m ₂ on the curved surface of the curved protrusion Z Yamagata bent portion m Since the slope m ₂ is pushed up, when the latching portion A further rises, as shown in FIGS. 24 (E) and (F), the mountain-shaped bent portion m stays in the second recess A ₂ , falling portion 47 is excessively turn left, without Turning stopping part a chevron bent portions m even reached the uppermost limit position multiplied by the first recess a _1, release the finger tip from the off button portion 23b, push bent up Since the latching portion A is lowered by the restoring force of the descending portion 47 and returns to the state of FIG. 24D, there may be a problem that the on state cannot be canceled.

In order to ensure that the angled bent portion m and the first recessed portion A ₁ or the second recessed portion A ₂ are locked, the angle of opening of the angled bent portion m (= α + β) is narrowed to increase the fitting depth. However, if the opening angle β of the lower slope m _{2 from} the radial direction line R is too small, the upper curve of the curved convex portion Z accompanying the rising of the latching portion A as shown in FIG. because through the left boundary point P of the edge portion 47 standing is drag direction to the lower side slope m ₂ from the plane, it occurs a defect in FIG. 24 (E) and (F). Therefore, it is desirable to increase the opening angle β so that the drag direction passes on the right side of the bending boundary point P. With increasing of the retaining portion A over the large opening angle beta, on the curved surface of the curved convex portion Z is sliding on the lower side slope m _2, since the slip reached the apex of the chevron bent portions m, Yamagata bent portion m is the since falls in the concave portion a _1, can be switched reliably from the oN state to the oFF state.

On the other hand, even if the opening angle α from the radial direction R of the opposite lower end side inclined surface m ₁ is small, the falling portion 47 can be pushed and bent to the right, so that it is possible to switch from the off state to the on state without any trouble. Therefore, it is desirable that the opening angle β is larger than the opening angle α than when the opening angle α and the opening angle β are equal. In this example, the opening angle α is 25 ° and the opening angle β is 35 °.

DESCRIPTION OF SYMBOLS 1,1 '... Detachable toothbrush vibration apparatus 2 ... Electric toothbrush 3 ... Toothbrush 3a ... Handle part 3b ... Handle part 3c ... Head part 3d ... Replacement brush unit 3e ... Neck part 3f ... Midway part 10, 10' ... Case main body 10a , 10b ... side 11 ... first bifurcated claw 12 ... second bifurcated claw 13 ... vibration motor housing 13a ... upper edge 13b, 13c ... bearing recess 13d, 13e ... leg receiving recess 14 ... battery housing Part 14a ... Wall 14b ... First hollow partition wall 14c ... Second hollow partition wall 15 ... Terminal fitting loading part 17 ... O-ring 20, 20 '... Outer cover 21 ... Rectangular window 22 ... Waterproof seal 23 ... Push Button part 23a ... On button part 23b ... Off button part 30, 30 '... Battery minus terminal fittings 30a, 91a ... Spring contact pieces 31, 33 ... End plate part 31a ... Folded elastic pieces 31b, 33b, 41a, 51a Returning piece 32 ... Bottom plate part 33a, 53 ... Solder pile piece 40, 40 '... Battery plus terminal fitting 41, 51 ... Leg piece part 41b, 51b ... Notch part 42, 52 ... Convex part 43 ... Folding elastic piece 44 ... Folding Curved portion 45 ... rise portion 46 ... inverted U-shaped portion 47 ... falling portion 48 ... terminal connecting piece 50 ... motor plus terminal fitting 60 ... vibrating motor 61 ... minus terminal 62 ... plus terminals 70, 70 '... dome-shaped motor cover 71 ... Ceiling part 71a, 71b ... Bearing hole 72 ... Additional ceiling part 73 ... Spring presser 80, 80 '... Switch operation part 81a, 81b, 82a, 82b ... Support shaft 81, 82 ... Opposing leg part 83, 83' ... Insulator part 83a ... oN button portion 83 b ... off button portion 84 ... partition wall portion 84a ... guide groove 90 ... waterproof seal 91 ... relay bracket A ... retaining portion _{A 1} ... first concave portion _{A 2} ... second concave portion B ... battery _{G 1} ... 1 of the guide groove G 2 _... second guide groove G 3 _... third guide groove H ... through hole h ... blind hole K ... notch K _1, K 2 _... outer cover engaging claw portion L ... lever m ... Angle-shaped bent part m ₁ ... Anti-lower end side slope m ₂ ... Lower end side slope O ... Rotation center P ... Boundary points P ₁ and P ₂ ... Suspension protrusion R ... Radial direction line S ... Cavity part T ... Tail part W ... Eccentric weight Z ... curved convex parts α, β ... opening angle

Claims (12)

In a switch device including a first metal fitting connected to one of the electrodes of the battery and its power supply object, and a second metal fitting connected to the other electrode of the battery and the power supply object, A switch operating portion having a lever portion that is positioned so that the elastic contact portion and the elastic contact portion of the second metal fitting face each other and are displaceable in a direction substantially perpendicular to the elastic contact portion of the first metal fitting; A hook-shaped bent portion that engages with a latching portion of the lever portion includes a third metal fitting having a leaf spring piece on an end side, and the latching portion is provided on a distal end side of the lever portion, and the switch operation unit A first recessed portion in which the angled bent portion relatively fits in the first rotation position and self-positions the latching portion, and the lever portion is provided on the farther end side than the first recessed portion. 2nd operation section A second recess for self-positioning the latching portion by relatively fitting the angled bent portion at a position, and a first recess between the first rotation position and the second rotation position of the switch operating portion; The angled portion of the lever portion is elastically contacted with the first metal fitting when the angled bent portion is inserted into the second recessed portion relative to the second recessed portion. A switch device characterized by pressing a portion to contact the elastic contact portion of the second metal fitting. The switch device according to claim 1, further comprising a spring presser that suppresses the bending of the leaf spring piece toward the lever portion. 3. The switch device according to claim 1, wherein the switch operation portion includes a pair of opposed leg portions having opposed shafts, and a bi-directional direction perpendicular to the support shaft across the pair of opposed leg portions. A switch device characterized by integrally including an extending lever portion and the lever portion curved from one end of the operation portion. 4. The switch device according to claim 3, wherein a radial line is defined as a line passing through the apex of the mountain-shaped bent portion and the rotation center of the support shaft in a free state of the leaf spring piece, the lower-side inclined surface of the mountain-shaped bent portion The opening angle with respect to the radial direction line is larger than the opening angle with respect to the radial direction line of the slope on the opposite lower end side of the mountain-shaped bent portion. 5. The switch device according to claim 1, wherein the power supply target is a vibration motor having an eccentric weight, and the first motor is interposed between the vibration motor and the battery. Or a case main body having a third metal fitting disposed therein, the case main body including a first bifurcated claw portion for detachably holding the neck portion of the toothbrush and a handle portion for the toothbrush detachably. A vibration device for a detachable toothbrush comprising two bifurcated claws integrally. 6. The detachable toothbrush vibration device according to claim 5, wherein the case body has a tail portion extending rearward from the second bifurcated claw portion and straddling the handle portion. . 7. The detachable toothbrush vibration device according to claim 5 or 6, further comprising a motor cover that closes the vibration motor housing portion of the case body, wherein the support shaft is swung by the vibration motor housing portion and the motor cover. A detachable toothbrush vibration device, wherein the vibration device is movably supported and the operation portion covers the motor cover. The detachable toothbrush vibration device according to claim 7, wherein the motor cover includes a spring retainer that suppresses the leaf spring piece from being bent toward the lever portion. 9. The detachable toothbrush vibration device according to claim 7, wherein the vibration motor housing portion includes a rotation preventing portion that limits a rotation angle around the support shaft of the switch operation portion. A vibration device for a removable toothbrush characterized by the above. 10. The vibration device for a detachable toothbrush according to claim 7, wherein an O-ring is interposed at an opening edge that goes around the battery housing portion and the vibration motor housing portion of the case body. An oscillating device for a detachable toothbrush comprising an outer cover that closes both housing parts. The case body includes a case body and a cover. The case body has a hollow portion that can be penetrated by a handle portion of the toothbrush, and a neck portion on the handle portion side of the handle portion of the toothbrush is attached to and detached from the tip of the case body. A first bifurcated claw portion that is freely and elastically clamped, and a second bifurcated claw portion 12 that detachably and flexibly clamps the middle portion of the handle portion at the abdomen of the case body, The detachable toothbrush vibration device according to claim 1, wherein the case main body has a built-in vibration motor near the first bifurcated claw portion. The detachable toothbrush vibration device according to claim 11, wherein the case body has a tail portion extending rearward from the second bifurcated claw portion and straddling the handle portion. .

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