JP2011044366A - Waterproof type electric equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water passing through a ventilation passage for exhausting gas generated in a secondary battery from affecting a drive mechanism. <P>SOLUTION: The waterproof type electric equipment has a waterproof case 30 in which a secondary battery 18 and a reciprocating drive means 12 as a driving mechanism operated by the secondary battery 18 are housed, and the waterproof case 30 includes a mechanism case 37 which has a closed space 37A in which the reciprocating drive means 12 is housed and a battery case 36 which has an inner space 36A in which the secondary battery is housed and includes a ventilation passage 41 which is opened to the atmosphere through a porous material 42. Since the closed space 37A of the mechanism case 37 and the inner space of the battery case 36 are made independent from each other, even if the reciprocating drive means 12 is operated and the internal pressure in the closed space 37A fluctuates, water regardless of vapor or liquid is prevented from entering the closed space 37A, while gas generated in the secondary battery 18 is discharged to the outside. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a waterproof electrical device, and more particularly to a waterproof electrical device having a built-in secondary battery and a drive mechanism that is mechanically operated by the power of the secondary battery.

  Conventionally, this type of waterproof electric device has a drive unit and a treatment unit operated by the drive unit, and the positional relationship of the periphery of the substrate of the treatment unit with respect to the drive unit is fixed to the drive unit. And a reciprocating drive means (corresponding to the drive mechanism of the present invention) for bending the substrate in a direction intersecting the surface of the substrate by connecting to the center of the substrate 2. Description of the Related Art There is known a massage apparatus in which a secondary battery is provided and the treatment portion is composed of the substrate made of a flexible material and a plurality of protrusions provided to protrude from the substrate. And in this massage device, the user grasps the drive part, presses the tip of the protrusion against the scalp and holds it by hand, and flexes the substrate of the treatment part by the reciprocating drive means. As the plurality of protrusions provided on the substrate are repeatedly tilted and raised, the scalp is squeezed, rubbed and struck by the mutual opening and closing protrusions. Can be intricately massaged. As shown in FIG. 9 and FIG. 10, the treatment unit 102 driven by the drive unit 101 is deformed between a curved convex state where the substrate 103 is bent downward and a curved concave state where the substrate 103 is bent upward. When repeating, the plurality of types of protrusions 104 and 105 arranged from the center side to the peripheral side move along with the bending of the substrate 103, so that the scalp S is pressed against the scalp S by the protrusions 104 and 105 pressed against the scalp S. The outer periphery of the substrate 103 is attached to the frame body 106. Further, for example, for hair washing, between the substrate 103 and the stretchable cover body 107 thereabove. A shampoo container 108 is provided, and the container 108 is formed on a synthetic sponge or sponge (ie, natural sponge) made of an open-cell foamed polyurethane, foamed rubber, or the like, which is an elastic body. As shown in FIG. 9, when the substrate 103 is in a curved convex state bent downward, the container 108 is almost uncompressed or slightly compressed, whereas, as shown in FIG. When the substrate 103 is in a curved concave state where the substrate 103 is bent upward, the container 108 is in a compressed state, and the shampoo for washing hair is ejected to the outside from the communicating portion 109 provided on the projection 105 ( For example, Patent Document 1).

  In addition, such an electric brush device is also known in which the edge of the substrate is slidably provided with respect to the frame of the drive unit (for example, Patent Document 2).

JP 2008-228922 A JP 2006-187544 A

  In the prior art, the drive mechanism and the secondary battery are housed in cases. As described above, the massage device is used for scalp washing, massage, etc., so it is used in an environment where there is a lot of steam, such as in a bathroom or a washroom, or where there is a risk of getting wet. Or For this reason, in order to prevent water droplets or steam from entering the case and adversely affecting the drive mechanism, the secondary battery, and the like, the drive mechanism and the secondary battery are housed in a waterproof case. Note that when a nickel metal hydride secondary battery or the like is used as the secondary battery, gas may be generated. Therefore, in order to prevent the gas from being filled in the case, the inside of the case is externally connected through a ventilation path. It is necessary to communicate. A porous material is provided in the air passage so that water droplets and steam do not flow into the case through the air passage.

  However, although the porous material can block liquid water, it passes gas water. For this reason, when used for a long period of time, gaseous water passes through the porous material and enters the case, and in this case, condensation occurs and liquid water accumulates in the case. There was a risk of adverse effects. This is particularly noticeable in a massage device in which the volume of the space in the case changes due to the mechanical movement of the drive mechanism and gas enters and exits the vent passage.

  The present invention solves the above-described problems and provides a waterproof electrical apparatus that can prevent the water that has passed through the air passage for discharging the gas generated in the secondary battery from affecting the drive mechanism. For the purpose.

  According to a first aspect of the present invention, there is provided a waterproof electrical device having a waterproof case, a secondary battery housed in the waterproof case, and a drive mechanism housed in the waterproof case and operated by the secondary battery. The waterproof case includes a mechanism case having a sealed space in which the drive mechanism is accommodated, and a battery case having an internal space independent of the sealed space of the mechanism case and in which the secondary battery is accommodated. In addition, the battery case is provided with an air passage that is opened to the atmosphere through a porous material.

  The invention according to claim 2 is the waterproof electrical apparatus according to claim 1, wherein an exterior case is provided outside the waterproof case.

  Further, the invention according to claim 3 is the waterproof electrical apparatus according to claim 1, wherein the mechanism case and the battery case are integrally formed.

  According to the invention of claim 1, since the drive mechanism is housed in the sealed space of the mechanism case, water does not enter the sealed space, so that the drive mechanism is not adversely affected by water, Further, the secondary battery is accommodated in a battery case having an internal space independent of the sealed space of the mechanism case, so that liquid water is blocked by the porous material of the air passage, and further, through the air passage. Thus, the gas generated from the secondary battery can be exhausted.

  In addition, since the exterior case is provided outside the waterproof case, the shape and design can be freely set such that the waterproof electrical device can be easily operated or grasped regardless of the structure and shape of the drive mechanism. The degree can be improved.

  Furthermore, since the mechanism case and the battery case are integrally formed, the strength of the case can be kept high.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole perspective view from the top which shows Example 1 of this invention. FIG. 2 is an overall perspective view from below. FIG. FIG. 2 is an exploded perspective view around the frame. It is an exploded perspective view around a brush part. It is an expanded sectional view of the principal part of a battery case. FIG. 2 is an exploded perspective view around the battery case. It is a perspective view of the lower side of the battery case. It is sectional drawing around the brush part of the curve convex state which shows a prior art example. It is sectional drawing around the brush part of a curved concave state which shows a prior art example.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  1 to 8 show a first embodiment. In this example, the upper and lower sides are defined with reference to the stationary posture of FIG. Reference numeral 1 denotes an electric brush device as a waterproof electric apparatus of the present invention. The electric brush device 1 includes a device main body 2 and a brush portion 3 that is detachably held on the lower side of the device main body 2.

  The brush portion 3 includes a substrate 4 and a plurality of protrusions 5 that are integrally provided so as to protrude downward from the surface 4S that is the lower surface of the substrate 4. The substrate 4 is formed so that the surface 4S side from which the protrusion 5 protrudes is convex in a natural state where the substrate 4 is not attached to the apparatus body 2. The substrate 4 is elliptical in plan view and is formed of an elastomer having flexibility and elasticity. The plurality of protrusions 5 are also provided integrally with the substrate 4. The edge 4 </ b> A of the substrate 4 is fixed to the edge of the frame body 6 provided on the bottom surface part 2 </ b> B side formed integrally with the apparatus main body 2. Note that the term “fixed” here includes a state in which connection is allowed with some movement, and in this embodiment, the edge 4A of the substrate 4 is fitted to the frame body 6. Both are detachably connected over the entire circumference. Reference numeral 4H in the figure denotes a knob provided integrally with the substrate 4.

  The frame 6 is not easily deformed as much as the elastomer constituting the brush portion 3, but is made of an elastically deformable synthetic resin and is formed in an elliptical ring shape that substantially matches the substrate 4 in plan view. Yes. Then, the center of the frame 6 in a plan view is disposed on the central axis X. The frame 6 is provided slightly below the bottom surface 2B of the apparatus body 2 with a gap. Further, the frame body 6 is provided to be swingable with respect to the apparatus main body 2 via a support means 7.

  The shape of the frame body 6 is such that, in the major axis direction of the frame body 6, the outer side portion 6 </ b> B on the side opposite to the center portion from the inner side portion 6 </ b> A on the center portion side through which the central axis X passes is It is formed in a substantially arc shape so as to be separated. On the other hand, the frame 6 is formed flat in the minor axis direction. In addition, a downward small protrusion is formed on the outer edge 6C of the outer portion 6B of the frame body 6. Then, the folded edge 4 </ b> A of the substrate 4 of the brush portion 3 is fitted to the outer edge 6 </ b> C of the frame body 6. The window hole 6D formed inside the frame 6 is circular in plan view with the central axis X as the center, and an elastomer is provided between the window hole 6D and the bottom surface portion 2B of the exterior case 2A. A packing 23 described later made of a material having flexibility and elasticity such as the above is provided.

  The support means 7 includes a shaft 8 and a bearing portion 8A. The shafts 8 are provided on the left and right sides of the bottom plate 9 constituting the bottom surface portion 2B of the apparatus main body 2, respectively. On the other hand, the bearing portions 8 </ b> A that receive the shaft 8 are provided on the left and right sides of the frame body 6. Then, the bearing portion 8A provided on the upper part of the suspension member 6F is rotatably connected by the shaft 8, so that the frame body 6 can swing around the shaft 8 as a rotation center. It has become. In addition, 8B in the figure has shown the cover plate which covers the outer side of the said bearing part 8A.

  The apparatus main body 2 includes a waterproof case 30 and the exterior case 2A that covers the outside of the case 30. The outer case 2A has a size that can be grasped with one hand while the bottom side is open. The opening on the bottom surface side of the exterior case 2A is closed by the bottom surface portion 2B of the apparatus main body 2. The bottom surface portion 2B includes the bottom plate 9 and a cover body 11. The bottom plate 9 is formed in an oval shape having an outer shape substantially equal to that of the frame 6 in plan view. The outer periphery of the bottom plate 9 is fixed to the bottom edge of the case 2A. A circular window hole 10 penetrating in the vertical direction is formed, and the cover body 11 that covers the window hole 10 and can be expanded and contracted is provided. The cover 11 is provided so as to seal the window hole 10 in a watertight manner by a bellows-like film made of a flexible material such as rubber, synthetic rubber, or elastomer. The case 30 is sandwiched between the case main body 31 and the bottom plate 9 so as to be airtightly connected to the bottom plate 9.

  The case 30 provided inside the apparatus main body 2 is provided with reciprocating drive means 12 as a drive mechanism for reciprocating the central portion O of the substrate 4 in the vertical direction. The reciprocating drive means 12 includes a motor 13, a crank 15 connected to a motor shaft (not shown) of the motor 13 via a reduction gear mechanism 14, and a yoke 16 coupled to an eccentric shaft 15A of the crank 15. The rod 16A formed integrally with the yoke 16 is provided. Thus, in this embodiment, a so-called Scotch-yoke mechanism is employed, but a crank mechanism may be employed.

  Note that a connection relay member 17 is integrally attached to substantially the center of the cover body 11. The connection relay member 17 is sandwiched between the upper surface side and the lower end of the rod 16A to fix the cover body 11 in a watertight manner, and a hook 17A is provided on the lower surface side thereof. A hook receiving portion 4B provided on the upper surface in the center of the substrate 4 is detachably connected. Therefore, the connection relay member 17 is reciprocated in the vertical direction by converting the rotational motion of the motor 13 into reciprocal motion between the crank 15 and the yoke 16. Thereby, the position where the hook receiving portion 4B is provided becomes the maximum amplitude portion in the substrate 4, and the amplitude is twice the eccentric distance F from the central axis of the crank 15 to the eccentric shaft 15A (2F). It becomes. The hook receiving portion 4B and the connection relay member 17 are disposed on the central axis X.

  Further, a secondary battery 18 for supplying electric power to the motor 13 is accommodated in the case 30 of the apparatus main body 2. As the secondary battery 18, for example, a nickel hydride secondary battery is used. Furthermore, a through hole 2C is formed on the upper surface side surface of the outer case 2A of the apparatus main body 2 so as to be biased to one side from the central axis X, and a switch button for operating the motor 13 from the through hole 2C. 19 is exposed. Hereinafter, the switch button 19 side from the central axis X is referred to as the front, the opposite side to the switch button 19 is referred to as the rear, and the direction orthogonal to the front-rear direction is referred to as the left-right direction.

  Next, the case 30 will be described. The case 30 is referred to as a chassis or the like disposed along the exterior case 2A inside the exterior case 2A that is grasped by the user. The case 30 includes the bottom plate 9, a case main body 31 provided on the bottom plate 9 and provided on the outer side along the exterior case 2 </ b> A, and an outer lid provided so as to cover the upper side of the case main body 31. 32, a display cover 33 which is insert-molded in front of the outer cover body 32 and has translucency and is exposed from the through hole 2C, an inner cover body 34, and a sealing material 35. The case body 31 is divided into a battery housing part 31B and a mechanism housing part 31C by a partition wall 31A, and the battery housing part 31B and the mechanism housing part 31C are integrated. The battery housing portion 31B, the sealing material 35, and the inner lid body 34 constitute a battery case 36, the bottom plate 9, the cover 11, the mechanism housing portion 31C, the sealing material 35, The inner lid body 34, the outer lid body 32, and the display cover 33 constitute a mechanism case 37. That is, the battery case 36 and the mechanism case 37 are integrally and inseparably configured by a common member. The outer lid 32 is attached to the case body 31 with the sealing material 35 placed on the opening edge of the case body 31 and the inner lid body 34 placed so as to cover the battery housing portion 31A. Thus, the inner lid body 34 is pressed against the battery accommodating portion 31 </ b> A through the sealing material 35. That is, the inner lid 34 is sandwiched between the case main body 31 and the outer lid 32. In this way, the battery case 36 is defined. On the other hand, a portion of the case 30 other than the battery case 36 is defined as the mechanism case 37. With such a structure, the battery case 36 and the mechanism case 37 can be easily defined.

  The secondary battery 18 is accommodated in a space 36 </ b> A in the battery case 36. Further, the inner lid 34 is formed with a through hole 34A for drawing out a lead wire 38 for connecting the secondary battery 18 to the circuit board 20, and the lead wire 38 is formed in the through hole 34A. At the same time, a sealing material 39 is filled. In addition, the battery housing portion 31 </ b> B and the inner lid body 34 are sealed by the sealing material 35.

  The reciprocating drive means 12 and the circuit board 20 are accommodated in the sealed space 37 </ b> A of the mechanism case 37. That is, the sealed space 37A accommodates the motor 13, the reduction gear mechanism 14, the crank 15, and the rod 16A of the yoke 16 that constitute the reciprocating drive means 12. The case body 31 and the outer lid body 32 are sealed by the sealing material 35. Further, the charging connection terminal 40 of the secondary battery 18 is exposed in the mechanism accommodating portion 31C.

  The battery accommodating portion 31B is formed with an air passage 41 having a primary side 41A communicating with the space 36A, a membrane-like porous material 42 provided in the middle, and the secondary side 41B being open to the atmosphere. The porous material 42 can pass a gas, but cannot pass a liquid. Accordingly, water cannot pass through the porous material 42 even if it is in the form of mist (that is, fine water droplets). And the recessed part 31D which becomes concave downward is formed in the bottom face part of the said battery accommodating part 31B, The porous material 42 is accommodated in this recessed part 31D. The porous material 42 is affixed to the attachment bodies 43 and 44 in which the through holes 43A and 44A are formed so as to close the through holes 43A and 44A, respectively. And these attachment bodies 43 and 44 are clamped between the cover board 45 and the case main body 31 in the state accommodated in the said recessed part 31D. Further, the lid plate 45 is fixed to the bottom surface side of the battery accommodating portion 31B by screws 46. And the through-hole 45A used as the primary side 41A of the said ventilation path 41 is formed in the said cover plate 45, and the through-hole 31E used as the secondary side 41B of the said ventilation path 41 is the said battery accommodating part 31B. It is formed in the recess 31D. Accordingly, the air passage 41 extends from the primary side 41A to the secondary side 41B through the through hole 45A, the through hole 43A, the porous materials 42 and 42, the through hole 44A, and the through hole 31E. . Then, the gas exhausted from the secondary side 41B is released into the atmosphere from the inside of the exterior case 2A through a gap (not shown).

  Further, the circuit board 20 is attached to the upper part of the inner lid 34. A switch 21 responsive to the switch button 19 is mounted below the switch button 19 on the circuit board 20. A light emitting element 22 is mounted on the front portion of the circuit board 20, and light from the light emitting element 22 is visible through the display cover 33.

  Thus, since the exterior case 2A is provided so as to cover the outside of the case 30 in which the reciprocating driving means 12, the secondary battery 18, the circuit board 20, and the like are accommodated, the reciprocating driving means 12 and Regardless of the structure, shape, and size of the secondary battery 18, the electric brush device 1 can be shaped to be easily operated or grasped. Further, since the battery case 36 and the mechanism case 37 are integrally configured, the strength of the case 30 can be kept high. Furthermore, since the electric brush device 1 is configured by attaching the exterior case 2A so as to cover the periphery of the integrally configured case 30, the battery case 36 and the mechanism case 37 are individually connected. The electric brush device 1 can be easily manufactured without having to be mounted in the outer case 2A.

  Next, the packing 23 will be described. The packing 23 is made of a flexible material such as rubber, synthetic rubber, or elastomer, and has a ring shape with a circular plan view around the central axis X. The upper portion 23A of the packing 23 is in pressure contact with the inner peripheral surface 9A that is the edge of the window hole 10 of the bottom plate 9, and the two are hermetically connected to define an expansion / contraction space 29 described later. Yes. Then, as will be described later, when the substrate 4 is repeatedly deformed between a curved convex state where the substrate 4 is bent downward and a curved concave state where the substrate 4 is bent upward, the frame body 6 is swung around the shaft 8. When moved, the upper portion 23A of the packing 23 does not deviate from the inner peripheral surface 9A. On the other hand, the lower part 23B of the packing 23 is formed integrally with the inner part 6A of the frame 6 by insert molding.

  Further, the substrate 4 is airtightly connected to the frame 6, the packing 23 connected above the frame 6, the bottom plate 9 with which the packing 23 abuts, and the bottom plate 9. In addition, a small through-hole-shaped first communication portion 24 and a second communication portion 25 that communicate with the outside of the expansion / contraction space 29 surrounded by the cover 11 and the substrate 4 connected to the lower side of the frame 6. Is provided. The expansion / contraction space 29 is provided with a shampoo container 26 as a liquid detergent that communicates with the communication portions 24 and 25 and responds to the bending of the substrate 4. A plurality of small protrusions 27 are provided in an annular arrangement on the surface 4S of the substrate 4 around the central axis X, and an annular wall 28 is provided so as to connect the small protrusions 27 to each other. ing. The substrate 4 is partitioned into a central portion and an outer peripheral portion by the small protrusions 27 and the annular wall 28. The second communication part 25 is formed in an area surrounded by the small protrusions 27 and the annular wall 28. On the other hand, the first continuous portion 24 is formed in a region outside the small protrusion 27 and the annular wall 28.

  The container 26 is adapted to repeatedly compress and restore in response to the bending of the substrate 4, thereby sucking and discharging the shampoo from the communicating portions 21 and 22. The container 26 is formed of a synthetic sponge or sponge (ie, natural sponge) made of an open-cell foamed polyurethane, foamed rubber, or the like, which is an elastic body in the embodiment. A through hole 26 </ b> A is formed in the central portion of the container 26 along the central axis X. The hook receiving portion 4B and the hook 17A can be connected through the through hole 26A.

  Next, the effect | action is demonstrated about the said structure. First, the user turns over the apparatus main body 2, puts the container 26 on the frame body 6, and then attaches the hook 17 </ b> A to the hook receiver of the substrate 4 of the brush unit 3 through the through hole 26 </ b> A of the container 26. Further, the edge 4 </ b> A of the substrate 4 of the brush portion 3 is engaged with the outer edge 6 </ b> C of the frame body 6. In this way, the electric brush device 1 is ready for use.

  And when scalp S is wash | cleaned or massaged, the user makes the said container 26 contain the appropriate amount of water previously. In addition, water is absorbed by the container 26 through the communication portions 24 and 25 by immersing the electric brush device 1 in water. Then, the electric brush device 1 is turned over from the state shown in FIG. 3 so that the surface 4S of the substrate 4 faces upward, and an appropriate amount of shampoo is poured into an area surrounded by the small protrusions 27 and the annular wall 28. At this time, the shampoo does not flow out to the area outside the small protrusion 27 and the annular wall 28 unless excessive pouring is performed. A small amount of shampoo permeates from the second communication part 25 to the container 26 side.

  Next, when the switch button 19 is operated, electric power is supplied from the secondary battery 18, whereby the motor 13 is activated and a motor shaft (not shown) rotates. As the motor shaft rotates, the crank 15 connected to the motor shaft via the reduction gear mechanism 14 rotates, and the crank 15 and the yoke 16 coupled to the eccentric shaft 15A of the crank 15 The rotational movement of the motor shaft is converted into a reciprocating movement, and the connection relay member 17 attached to the lower end of the rod 16A formed integrally with the yoke 16 reciprocates up and down. Then, the substrate 4 is the same as in the prior art so that the hook receiving portion 4B connected to the hook 17A provided on the connection relay member 17, that is, the center of the substrate 4 is the maximum amplitude portion. The deformation is repeated between a curved convex state bent downward and a curved concave state bent upward, and the amplitude at the maximum amplitude portion is an eccentric distance F from the central axis of the crank 15 to the eccentric shaft 15A. Double (2F).

  Thus, by repeating the deformation between the curved convex state where the substrate 4 is bent downward and the curved concave state where the substrate 4 is bent upward, the expansion / contraction space 29 is repeatedly compressed and restored. As a result, the container 26 in the expansion / contraction space 29 is repeatedly compressed and restored in response to the bending of the substrate 4. When the container 26 is restored from the compressed state, the expansion / contraction space 29 is in a reduced pressure state, so that the shampoo poured into the inner area of the annular small protrusion 27 and the annular wall 28 is the second. It is sucked from the communication part 25 and flows into the expansion / contraction space 29 and is accommodated in the container 26. Conversely, when the container 26 is compressed, the shampoo accommodated in the container 26 is ejected from the second communication portion 25. The shampoo foams by being mixed with air when pushed out through the second communication part 25. Then, the deformation of the container 26 is repeated in this manner, so that the shampoo gradually spreads from the center of the container 26 to the outer peripheral side. The applied shampoo will be pushed out. In this way, the container 26 repeatedly compresses and restores in response to the deformation of the substrate 4 repeated between the curved convex state and the curved concave state, so that the inner area of the small protrusion 27 and the annular wall 28 is obtained. The shampoo poured into is bubbled and supplied to the outside from the entire brush part 3.

  Thus, in a state where the shampoo is foamed, the user grasps the apparatus main body 2, presses the tip of the protrusion 5 against the scalp S, and holds it by hand. As a result, the protrusion 5 mainly rubs the scalp S by being inclined inwardly with respect to the central axis X, or is erected afterwards, and gives a stimulus. You can massage.

  In addition, when performing cleaning or massage, it is necessary to bring the plurality of protrusions 5 into contact with the scalp S evenly by bringing the brush portion 3 to face the scalp S. Since it cannot be visually recognized, the brush portion 3 is roughly opposed to the scalp S in a state where the apparatus main body 2 is grasped. However, when the brush portion 3 is not directly facing the scalp S (the central axis X is inclined with respect to the scalp S), the brush portion 3 is not connected to the device as indicated by an arrow T. By swinging about the shaft 8 with respect to the main body 2, the brush portion 3 can automatically come into contact with the scalp S in a state of being directly facing the scalp S. Can be evenly washed and massaged. When the brush portion 3 swings about the shaft 8, the upper portion 23 </ b> A of the packing 23 is pressed against the inner peripheral surface 9 </ b> A of the bottom plate 9, so that the shampoo leaks to the outside of the packing 23. There is no such thing as going out.

  In addition, when the reciprocating drive means 12 is operated, the cover 11 is repeatedly pushed outward or pulled inward. For this reason, the sealed space 37A of the mechanism case 37 repeats compression and expansion, and the internal pressure fluctuates. However, the sealed space 37A does not communicate with other spaces. For this reason, even if water (regardless of gas and liquid) exists in the atmosphere of the environment in which the electric brush device 1 is used, this water is contained in the sealed space 37A when the sealed space 37A is in a reduced pressure state. Will not be aspirated. Therefore, the reciprocating drive means 12 and the circuit board 20 in the mechanism case 37 are prevented from being adversely affected by water.

  On the other hand, the internal space 36 </ b> A of the battery case 36 in which the secondary battery 18 is accommodated communicates with the external space through the air passage 41. However, liquid water in the atmosphere cannot pass through the ventilation path 41 and cannot enter the battery case 36 because the porous material 42 is provided in the ventilation path 41. Therefore, the secondary battery 18 in the battery case 36 is prevented from being adversely affected by liquid water. As described above, since the battery case 36 and the mechanism case 37 are independent, the fluctuation of the internal pressure of the sealed space 37A does not affect the internal pressure of the internal space 36A. Accordingly, air does not enter and exit the ventilation path 41 in accordance with the operation of the reciprocating drive means 12. That is, the air passage 41 hardly circulates air if the secondary battery 18 is normal. For this reason, gaseous water that can pass through the porous material 42 hardly flows into the internal space 36 </ b> A of the battery case 36. As described above, since the battery case 36 and the mechanism case 37 are independent, even if gaseous water flows into the internal space 36A, the gaseous water enters the sealed space 37A. Does not flow. For this reason, gaseous water does not condense in the sealed space 37A and does not adversely affect the reciprocating drive means 12, the circuit board 20, and the like.

  The secondary battery 18 may generate gas when there is an abnormality. However, this gas can pass through the porous material 42. Accordingly, after the gas is discharged from the primary side 41A to the secondary side 41B of the air passage 41, it is released into the atmosphere through the gap of the outer case 2A.

  As described above, the embodiment includes the waterproof case 30 in which the secondary battery 18 and the reciprocating drive means 12 serving as a drive mechanism operated by the secondary battery 18 are accommodated. A mechanism case 37 having a sealed space 37A in which the reciprocating drive means 12 is accommodated, and an air passage 41 having an internal space 36A in which the secondary battery 18 is accommodated and opened to the atmosphere via the porous material 42 are provided. In addition, the sealed space 37A of the mechanism case 37 and the internal space of the battery case 36 are made independent, so that the reciprocating drive means 12 operates and the internal pressure of the sealed space 37A varies. Even so, water can be prevented from entering the sealed space 37A regardless of gas and liquid, while the gas generated from the secondary battery 18 can be released to the outside.

  In addition, since the outer case 2A is provided outside the waterproof case 30, the outer case 2A can be easily operated or grasped regardless of the structure, shape, and size of the reciprocating drive means 12 and the like. The degree of freedom in shape and design can be improved.

  Furthermore, since the mechanism case 37 and the battery case 36 are integrally formed, the strength of the case 30 can be kept high.

  The waterproof electrical apparatus according to the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the invention. For example, in the above-described embodiment, the electric brush device that can be used for washing and massaging the scalp and the like is described as the waterproof electric device. However, the electric brush device may be applied to other devices. In the above embodiment, the reciprocating drive means is used as the drive mechanism. However, the drive mechanism may be applied to devices using other types of drive mechanisms.

1 Electric brush device (waterproof electrical equipment)
2A exterior case 12 reciprocating drive means (drive mechanism)
18 Secondary battery 30 Waterproof case 36 Battery case 36A Internal space 37 Mechanism case 37A Sealed space 41 Ventilation path 42 Porous material

Claims (3)

In a waterproof electrical device having a waterproof case, a secondary battery housed in the waterproof case, and a drive mechanism housed in the waterproof case and operated by the secondary battery,
The waterproof case includes a mechanism case having a sealed space in which the drive mechanism is accommodated, and a battery case having an internal space independent of the sealed space of the mechanism case and in which the secondary battery is accommodated. In addition, the battery case is provided with an air passage that is open to the atmosphere through a porous material.   The waterproof electrical apparatus according to claim 1, wherein an exterior case is provided outside the waterproof case.   The waterproof electric apparatus according to claim 1, wherein the mechanism case and the battery case are integrally formed.

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