CN102525680A - Small sized electric device - Google Patents
Small sized electric device Download PDFInfo
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- CN102525680A CN102525680A CN2011103716221A CN201110371622A CN102525680A CN 102525680 A CN102525680 A CN 102525680A CN 2011103716221 A CN2011103716221 A CN 2011103716221A CN 201110371622 A CN201110371622 A CN 201110371622A CN 102525680 A CN102525680 A CN 102525680A
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Abstract
Provided is a small sized electric device, capable of inhibiting the over-high internal pressure of the body housing. An electric toothbrush comprises a body housing (20) composed of an intermediate housing (30) and a holding housing (60) in a mutual overlapping manner. A holding side sealing member (24) is arranged between part of the intermediate housing (30) and part of the holding housing (60) for sealing part of the intermediate housing (30) and part of the holding housing (60). When the internal pressure of the body housing (20) is higher than the external pressure of the body housing (20), the holding side sealing member (24) deforms according to the pressure difference of the internal and external pressure of the body housing (20), thereby forming a connecting path for mutually communicating the interior and the exterior of the body housing (20) and accordingly decreasing the internal pressure of the body housing (20).
Description
Technical field
The present invention relates to a kind of small-sized electric device, possess body shell, body shell comprises the 1st housing and the 2nd housing that separately forms and combine each other, and the inner surface of the outer surface of the 1st housing and the 2nd housing is opposed.
Background technology
For the device that plays a role as the small-sized electric device, the known electric toothbrush that record in the patent documentation 1 is for example arranged.
Shown in figure 12, this electric toothbrush 100 is provided with and is used for body shell 110 that user controls and is installed in the brush portion 120 on this body shell 110.Body shell 110 is made up of handle portion 111 and battery cover 112.Take in motor and battery 130 in the inside of handle portion 111.Battery cover 112 is installed in the bottom of handle portion 111, with the end covering of battery 130.The periphery of battery cover 112 is provided with the O shape ring 113 with sealing between handle portion 111 and the battery cover 112.
Patent documentation 1: No. 9168554 communiques of japanese kokai publication hei
Yet, in electric toothbrush 100 devices such as small-sized electric such as grade, descend, perhaps produce reasons such as gas owing to the rising of body shell temperature inside, air pressure from battery, cause the body shell pressure inside to rise.In this case, when the body shell pressure inside excessively rises, might cause the inner part distortion of body shell etc.
For this point, the structure that the electric toothbrush 100 of patent documentation 1 is adopted, owing to sealed by O shape ring 113 between handle portion 111 and the battery cover 112, so internal pressure is difficult to be eased.Therefore, in the electric toothbrush 100 of patent documentation 1, the probability that above-mentioned excessive pressure rises is especially big.
Summary of the invention
The objective of the invention is to, provide a kind of and can suppress the too high small-sized electric device of body shell pressure inside.
Record is used to realize the mode of above-mentioned purpose below.
Small-sized electric device of the present invention; Possesses body shell; This body shell comprises the 1st housing and the 2nd housing; Said the 1st housing and said the 2nd housing make up with the part of said the 1st housing and a part of overlapped mode of said the 2nd housing, and said small-sized electric device comprises the 1st elastomeric element, and the 1st elastomeric element is set between the part and the part of said the 2nd housing of said the 1st housing; With sealing between the part of said the 1st housing and the part of said the 2nd housing; When the internal pressure of said body shell during greater than the external pressure of said body shell, said elastomeric element is out of shape according to the difference of the external pressure of the internal pressure of said body shell and said body shell, thereby forms the access that the outside with the inside of said body shell and said body shell is interconnected.
According to the present invention, can provide a kind of and can suppress the too high small-sized electric device of body shell pressure inside.
Description of drawings
Fig. 1 is the figure that illustrates as the portable electric toothbrush with a lid of an embodiment of the present invention, (A) is the front view that its Facad structure is shown, and (B) is the side view that its side structure is shown, and (C) is the vertical view of the planar structure seen of the arrow D1C from (A).
Fig. 2 is the figure that the electric toothbrush of an embodiment of the present invention is shown, and (A) is the front view that is illustrated in the Facad structure when brush portion has been installed on the body shell, (B) is the front view that the Facad structure when body shell unloads brush portion is shown.
Fig. 3 be illustrate an embodiment of the present invention portable electric toothbrush with a lid, along the cutaway view of the cross section structure of the D3-D3 line of Fig. 1 (C).
Fig. 4 is the figure of handle portion side seal that the electric toothbrush of an embodiment of the present invention is shown, and (A) is the front view that its Facad structure is shown, and (B) is the cutaway view that illustrates along the cross section structure of the D4B-D4B line of (A).
Fig. 5 is the figure that the electric toothbrush of an embodiment of the present invention is shown, (A) with (B) be the cutaway view of amplification cross section structure that the region D 5 of Fig. 3 is shown.
Fig. 6 is the figure that the electric toothbrush of an embodiment of the present invention is shown; (A) be the front view that the Facad structure of battery installation section is shown; (B) being the cutaway view that illustrates along the cross section structure of the D6B-D6B line of (A), (C) is the cutaway view of amplification cross section structure that the region D 6C of (B) is shown.
Fig. 7 is the figure that the electric toothbrush of an embodiment of the present invention is shown, and (A) is the axonometric chart of the stereochemical structure when face side is watched the negative electrode installation portion, (B) is the axonometric chart that the stereochemical structure of negative electrode part is shown.
Fig. 8 is the figure of negative electrode installation portion that the electric toothbrush of an embodiment of the present invention is shown, and is the axonometric chart that the stereochemical structure when rear side is watched this installation portion is shown.
Fig. 9 is the figure of negative electrode installation portion that the electric toothbrush of an embodiment of the present invention is shown; (A) be the vertical view that its planar structure is shown; Fig. 9 (B) is the front view that its Facad structure is shown, and Fig. 9 (C) is the upward view that its bottom surface structure is shown, and Fig. 9 (D) is the side view that its right flank structure is shown.
Figure 10 be illustrate an embodiment of the present invention electric toothbrush, along the cutaway view of the cross section structure of the D6B-D6B line of Fig. 6 (A).
Figure 11 is the figure that illustrates as the portable electric toothbrush with a lid of other embodiments of the present invention, (A) and (B) is the cutaway view that illustrates the amplification cross section structure of an example of the structure modify of the region D 5 of Fig. 3.
Figure 12 is the axonometric chart that illustrates as the stereochemical structure of the electric toothbrush of existing small-sized electric device.
Description of reference numerals
1 ... Portable electric toothbrush with a lid (small-sized electric device); 2 ... Electric toothbrush; 3 ... Lid; 4 ... Battery; 11 ... Bristle; 20 ... Body shell; 21 ... Battery installation section; 22 ... Accommodation space; 23 ... Medial side sealing member (elastomeric element); 24 ... Control side seal (elastomeric element); 24A ... Foundation elasticity portion; 24B ... The distortion elastic; 30 ... Middle casing (the 1st housing); 33 ... Motor; 37 ... Opposed portion; 40 ... Inner shell; 41 ... Motor mounting portion; 44 ... Sealing member installation portion (elastomeric element installation portion); 50 ... Shell; 60 ... Control housing (the 2nd housing); 70 ... The anode installation portion; 71 ... The anode part; 71A ... The anode contact site; 71B ... The anode extension; 71C ... Anode is near portion; 72 ... The installation portion sidewall; 73 ... The installation portion perisporium; 75 ... The part groove; 80 ... The negative electrode installation portion; 81 ... The negative electrode part; 81T ... The negative electrode protuberance; 81U ... Front end; 82 ... The 1st cathode wall portion; 83 ... The 2nd cathode wall portion; 83A ... Opposed faces; 87 ... Protective bulkhead portion (guard block); 87B ... Pawl (limiting unit (fixed part)).
The specific embodiment
With reference to Fig. 1～Figure 10, the portable electric toothbrush 1 of an embodiment of the present invention is described.In the portable electric toothbrush 1 of this embodiment, an example that small-sized electric device of the present invention is embodied as portable electric toothbrush 1 with a lid (below be called " portable electric toothbrush 1 ") is shown.
With reference to Fig. 1, the overall structure of portable electric toothbrush 1 is described.
Portable electric toothbrush 1 possesses electric toothbrush 2 and lid 3.
Lid 3 constitutes with body shell 20, and in order to cover brush portion 10, user is installed to lid 3 on the body shell 20 of electric toothbrush 2, and can unload hd 3 from body shell 20.When lid 3 is installed to 20 last times of body shell, whole brush portion 10 is covered by lid 3.
The roof of lid 3 is provided with inside and outside 2 the lid hole 3A that are interconnected with lid 3.When lid 3 is installed to 20 last times of body shell, be discharged to the outside of lid 3 through lid hole 3A attached to the moisture in the brush portion 10.
At this, each term to portable electric toothbrush 1 defines as follows.
(a) will be made as " axially Z " along the direction of the central shaft 1C (controlling the central shaft of housing 60) of portable electric toothbrush 1.
(b) will upward be made as " depth direction Y " at the front view (Fig. 1 (A)) of portable electric toothbrush 1 with the axial vertical direction of Z.
(c) will upward be made as " width X " at the side view (Fig. 1 (B)) of portable electric toothbrush 1 with the axial vertical direction of Z.
(d) in each element of portable electric toothbrush 1, the end that will be positioned at brush portion 10 sides of portable electric toothbrush 1 is called " leading section ", and the end of controlling housing 60 sides that will be positioned at portable electric toothbrush 1 is called " bottom ".
(e) on axial Z, will be called towards the direction of leading section from the bottom of portable electric toothbrush 1 in " axle the place ahead to ".In addition, on axial Z, will be called " axle end direction " from the direction of leading section towards the bottom of portable electric toothbrush 1.
(f) on depth direction Y, will be called towards the direction of front end from the root of bristle 11 in " the place ahead to ".In addition, on depth direction Y, will be called towards the direction of root at " rear to " from the front end of bristle 11.
(g) on width X, will be called from the direction of right side the figure " left to " towards the left side.In addition, on width X, will be called from the direction of left side the figure on " right-hand to " towards the right side.
(h) on axial Z, with axle the place ahead of portable electric toothbrush 1 to being called " front ".In addition, on axial Z, the axle end direction of portable electric toothbrush 1 is called " bottom end side ".
(i) on depth direction Y, with the place ahead of portable electric toothbrush 1 to being called " front side ".In addition, on depth direction Y, with the rear of portable electric toothbrush 1 to being called " rear side ".
(j) outer surface with the face forward of each element of portable electric toothbrush 1 is called " front surface ", will be called " surface, back " towards the outer surface at rear.
(k) on portable electric toothbrush 1, will be called " virtual reference cross section " through the center of width X and the cross section that determines by axial Z and depth direction Y.In addition, cross section structure as shown in Figure 3 is equivalent to the structure in the virtual reference cross section of portable electric toothbrush 1.
With reference to Fig. 2, the detailed structure of electric toothbrush 2 is described.
Controlling housing 60 constitutes when user uses electric toothbrush 2 and controls controlling housing 60.
On brush installation portion 51, be formed with the pawl 51A that is used to install brush portion 10.Motor 33 has been taken in inside at brush installation portion 51, and this motor 33 is by roof 51B and perisporium 51C encirclement, and motor 33 plays a role as vibration source.
Referring to Fig. 3, the internal structure of electric toothbrush 2 is described.
In inner shell 40, be provided with motor mounting portion 41, substrate installation portion 42, installation portion fixed part 43 and anode installation portion 70.Motor mounting portion 41, substrate installation portion 42, installation portion fixed part 43 and anode installation portion 70 adopt identical materials to form as one as the part of inner shell 40.
Between the inner surface of the brush installation portion 51 of the back surface of motor 33 and shell 50, be provided with liner 35.Liner 35 improves from the transfer of vibration efficient of motor 33 to brush portion 10.The front surface of liner 35 contacts with the back surface of motor 33.The back surface of liner 35 contacts with the inner surface of brush installation portion 51.
Back mounted on surface at substrate installation portion 42 has circuit board 36.Switch 32 is installed on circuit board 36.It is forwards outstanding than the front surface of substrate installation portion 42 that the leading section of switch 32 passes substrate installation portion 42.
Negative electrode installation portion 80 is installed on installation portion fixed part 43.Negative electrode part 81 is installed on negative electrode installation portion 80.Anode part 71 is installed on anode installation portion 70.
In inner shell 40, the part of the front of motor mounting portion 41, substrate installation portion 42 and installation portion fixed part 43 is set at the inside of shell 50.
In inner shell 40, the part of installation portion fixed part 43 and anode installation portion 70 are set at the inside of controlling housing 60.Thus, on body shell 20, be formed with the outer surface of installation portion fixed part 43 and the outer surface and opposed opposed 37 each other of the inner surface of controlling housing 60 of anode installation portion 70.That is, in body shell 20, middle casing 30 with control the part of housing 60 and make up with a part of overlapped mode of controlling housing 60 with middle casing 30.
In body shell 20, at the inner surface of the bottom of shell 50 with at the medial side sealing member 23 that is provided with on the depth direction Y and between the outer surface of the opposed inner shell 40 of this inner surface as the 2nd elastomeric element.In addition, control side seal 24 at the inner surface of the leading section of controlling housing 60 with being provided with on the depth direction Y and between the outer surface of the opposed inner shell 40 of this inner surface as the 1st elastomeric element.
Medial side sealing member 23 anti-sealings etc. are from the end face of the bottom side of shell 50 with in the inside that is immersed in middle casing 30 on the axial Z and between the outer surface of the opposed inner shell 40 of this end face.
Control anti-sealings of side seal 24 etc. from the end face of the leading section side of controlling housing 60 be immersed in the inside of controlling housing 60 on the axial Z and between the outer surface of the opposed inner shell 40 of this end face.
The action of electric toothbrush 2 then, is described.
When user had carried out making operation across 31 pairs of switches of switch cover 32, the voltage of battery was applied on the motor 33.Thus, the output shaft 33A of motor 33 and eccentric hammer 34 rotations.And, through the rotation of this eccentric hammer 34, motor 33 vibrations.The vibration of motor 33 is delivered to brush portion 10 via liner 35 and brush installation portion 51.Through this structure, portable electric toothbrush 1 makes bristle 11 vibration, and the tooth of user is cleaned.
With reference to Fig. 4 and Fig. 5, the structure and the function of controlling side seal 24 are described.
As shown in Figure 4, control side seal 24 and be provided with 24A of foundation elasticity portion and distortion elastic 24B.The 24A of foundation elasticity portion forms ring-type.Distortion elastic 24B forms from the outer peripheral face of the 24A of foundation elasticity portion to outstanding flange shape in the radial outside.That is, controlling side seal 24 forms and on the cross section that comprises central shaft 24C, is the T word shape.
Controlling on the cross section that comprises central shaft 24C of side seal 24, the length of the Z vertically of the 24A of foundation elasticity portion is made as " wall thickness L1 ", when the length of the Z vertically of distortion elastic 24B was made as " wall thickness L2 ", wall thickness L2 was littler than wall thickness L1.
As shown in Figure 5, be formed with sealing member installation portion 44 at the outer surface of inner shell 40.Sealing member installation portion 44 forms groove, and this flute profile becomes ring-type, is used to install the 24A of foundation elasticity portion that controls side seal 24.
State and distortion elastic 24B that side seal 24 is embedded in sealing member installation portion 44 with the 24A of the foundation elasticity portion state that direction has taken place towards axle the place ahead to be out of shape at the bottom of the axle through contact with the inner surface of controlling housing 60 of controlling is installed on the inner shell 40.
Shown in Fig. 5 (A), when the external pressure of body shell 20 was higher than the internal pressure of body shell 20, distortion elastic 24B was pressed against the inner surface of controlling housing 60 under the action of pressure between inside and the outside.In addition; When the external pressure of the internal pressure of body shell 20 and body shell 20 big or small identical; Will return at distortion elastic 24B under the effect of power of shape of the state that is not applied to load, distortion elastic 24B is pressed against the inner surface of controlling housing 60.Thus, middle casing 30 and control between the housing 60 is sealed.Also can produce when in addition, there is pressure differential in the distortion elastic 24B power that will return to the shape of the state that is not applied to load between inside and outside.
Shown in Fig. 5 (B), when the internal pressure of body shell 20 was higher than the external pressure of body shell 20, under the action of pressure between inside and the outside, distortion elastic 24B was out of shape and leaves from the inner surface of controlling housing 60.Thus, on opposed 37, in body shell 20 and control between the housing 60 and form the slit, so internal pressure descends.Promptly; When the internal pressure of body shell 20 during greater than the external pressure of body shell 20; Distortion elastic 24B is out of shape with the difference of the external pressure of body shell 20 according to the internal pressure of body shell 20, thus the access that formation is interconnected the outside of the inside of body shell 20 and body shell 20.
Referring to Fig. 6, the detailed structure of battery installation section 21 is described.
On the mid portion of the axial Z of installation portion perisporium 73, the mat 74 that is formed by elastomeric element is installed.Taken in the inside of body shell 20 under the state of battery, mat 74 is sandwiched between battery and the installation portion perisporium 73 and is compressed.
With reference to Fig. 7～Figure 10, the detailed structure of negative electrode installation portion 80 is described.
Like Fig. 7 and shown in Figure 8, negative electrode installation portion 80 is provided with the 82, the 2nd cathode wall portion 83 of the 1st cathode wall portion, prolong wall portion the 86, the 1st hook the 84, the 2nd hook 85, covering part 88 and protective bulkhead portion 87.The 82, the 2nd cathode wall portion 83 of the 1st cathode wall portion, prolong wall portion the 86, the 1st hook the 84, the 2nd hook 85, covering part 88 and protective bulkhead portion 87 and adopt identical materials to form as one as the part of negative electrode installation portion 80.In addition, with the 1st cathode wall portion 82 the axle end direction side end face be called " the 1st end face 82A ".In addition, the axle the place ahead with the 1st cathode wall portion 82 is called " the 2nd end face 82B " to the end face of side.In addition, with the 2nd cathode wall portion 83 the axle end direction side end face be called " opposed faces 83A ".
When in the 1st cathode wall portion 82, negative electrode part 81 being installed, the 1st cathode wall portion 82 contacts with the part of negative electrode part 81.The 2nd cathode wall portion 83 is side-prominent to accommodation space 22 from the 1st end face 82A of the 1st cathode wall portion 82, and the periphery of the part of negative electrode part 81 is surrounded.
Negative electrode rear portion 81A forms the linearity of Z extension vertically, and is connected with circuit board 36.The anterior 81B of negative electrode is connected with the negative electrode of battery, is wound into coiled type.Bending section 81C is connected negative electrode rear portion 81A with the anterior 81B of negative electrode.
Like Fig. 8 and shown in Figure 9, the 2nd end face 82B of the 1st cathode wall portion 82 is provided with a pair of the 1st hook the 84, the 2nd hook 85, prolongs wall portion 86 and covering part 88.In addition, be provided with the base end part of protective bulkhead portion 87 at the outer peripheral face of the 1st cathode wall portion 82.
Prolonging wall portion 86 fixes the leading section of negative electrode rear portion 81A.The leading section of negative electrode rear portion 81A hooks the pawl 86A that prolongs wall portion 86, thereby negative electrode part 81 is fixed on the negative electrode installation portion 80.
The 1st hook 84 and the 2nd hook 85 are fitted on the installation portion fixed part 43.The 1st hook 84 and the 2nd hook 85 are fitted to respectively on the corresponding site of installation portion fixed part 43, thereby negative electrode installation portion 80 is fixed on the installation portion fixed part 43.
Covering part 88 is set between the anode extension 71B of bending section 81C and anode part 71.Covering part 88 covers at the leading section side of the 1st cathode wall portion 82 bending section 81C with negative electrode part 81.Thus, can hinder anode extension 71B and bending section 81C is directly opposed.
With reference to Fig. 9 and Figure 10, the detailed structure of protective bulkhead portion 87 is described.In addition, in the explanation below, " datum level P " expression is vertical with the central shaft of electric toothbrush 2 and comprise the virtual plane of opposed faces 83A.
As shown in Figure 9, protective bulkhead portion 87 is provided with main body 87A of wall portion and a pair of pawl 87B.The main body 87A of wall portion is outstanding from outer peripheral face direction at the bottom of axle of the 2nd cathode wall portion 83, with the part covering of anode part 71.Pawl 87B is as limiting unit and fixed part setting, and pawl 87B hooks the outer peripheral face of installation portion perisporium 73, and limiting protecting wall portion 87 moves with respect to installation portion perisporium 73.
Shown in figure 10, the fore-end of the anterior 81B of negative electrode (below be called " negative electrode protuberance 81T ") is side-prominent towards the bottom than datum level P, is set in the accommodation space 22.That is, the anterior 81B of negative electrode is divided into 81S of negative electrode basic courses department that is surrounded by the 2nd cathode wall portion 83 and the negative electrode protuberance 81T that gives prominence to towards accommodation space 22.
At this, the length till will the front end 87U from datum level P to protective bulkhead portion 87 is called " length L A ".In addition, the length till will the front end 81U from datum level P to negative electrode protuberance 81T is called " length L B ".Length L A is the beeline that datum level P is connected with front end 87U.Length L B is the beeline that datum level P is connected with front end 81U.
The length L A of protective bulkhead portion 87 is bigger than the length L B of negative electrode protuberance 81T.Therefore, shown in Fig. 6 (A), anode is covered by the main body 87A of wall portion of protective bulkhead portion 87 near the total inner surface of the 71C of portion.
Referring to Fig. 6, the installment state of protective bulkhead portion 87 is described.
On installation portion perisporium 73, between part corresponding and negative electrode installation portion 80, be formed with peristome 73B with mat 74.Peristome 73B is with a part of disjunction of the part groove 75 of installation portion perisporium 73, and the width of peristome 73B is bigger than the width of part groove 75.
On the part adjacent of the outer surface of installation portion perisporium 73, be formed with stage portion 73C with peristome 73B.The pawl 87B that stage portion 73C forms protective bulkhead portion 87 hooks.
The main body 87A of wall portion is accommodated in the part groove 75 with the mode that whole of accommodation space 22 sides of anode extension 71B is covered and the inner surface 73A of the face of accommodation space 22 sides of the main body 87A of wall portion and installation portion perisporium 73 forms a side face.
With reference to Fig. 9 (D), the structure of the 2nd cathode wall portion 83 is described.
The inner surface 83B of the 2nd cathode wall portion 83 is provided with flexure plane 83C and opening surface 83D.Flexure plane 83C is with crooked with the coil shape corresponding mode of the 81S of negative electrode basic courses department.Opening surface 83D is continuous from each end of flexure plane 83C.The radius of curvature of flexure plane 83C is littler than the radius of battery.Therefore, the part that hinders the cathode side of battery enters into the space that the inner surface by the 2nd cathode wall portion 83 impales.
According to this embodiment, can access following effect.
(1) in electric toothbrush 2, between negative electrode protuberance 81T and anode are near the 71C of portion, is provided with the protective bulkhead portion 87 that prevents that part from contacting with each other.According to this structure, when the anterior 81B of negative electrode when distortion has taken place near the 71C of portion in anode, can suppress negative electrode part 81 and be in contact with one another and short circuit with anode part 71.In addition, be installed to 21 last times of battery installation section at the battery that will peel off thin film, the anode and the negative electrode part 81 of the battery that can suppress to expose owing to peeling off of thin film are in contact with one another and short circuit.
(2) in electric toothbrush 2, the pawl 87B of protective bulkhead portion 87 hooks the stage portion 73C of installation portion perisporium 73.Constitute according to this, when carrying out the installation or removal operation of battery, can hinder protective bulkhead portion 87 through pawl 87B and move with respect to installation portion perisporium 73.Therefore, when for example carrying out the installation or removal operation of battery, can suppress to float from installation portion perisporium 73 and cause protective bulkhead portion 87 damage because of protective bulkhead portion 87.
(3) in electric toothbrush 2, the main body 87A of wall portion and the 2nd cathode wall portion 83 of protective bulkhead portion 87 form as one.In addition, the pawl 87B of protective bulkhead portion 87 and the main body 87A of wall portion form as one.Constitute according to this, can carry out in the lump the 1st hook 84 grades of negative electrode installation portion 80 are embedded into the operation of installation portion fixed part 43 and the operation that pawl 87B is hooked stage portion 73C, so can improve assembling operation efficient.
(4) in electric toothbrush 2, the length L A of protective bulkhead portion 87 is bigger than the length L B of negative electrode protuberance 81T.Constitute according to this, anode is covered by the main body 87A of wall portion of protective bulkhead portion 87 near the total inner surface of the 71C of portion, contacts with anode part 71 so can further positively suppress negative electrode part 81.
(5) in electric toothbrush 2, protective bulkhead portion 87 is incorporated in the part groove 75 near the 71C of portion with anode together.According to this formation, protective bulkhead portion 87 is difficult to contact with battery, follows the battery installation exercise and breakage so can suppress protective bulkhead portion 87.
(6) in electric toothbrush 2, be provided with flexure plane 83C at the inner surface 83B of the 2nd cathode wall portion 83.In addition, the radius of curvature of flexure plane 83C is set forr a short time than the radius of battery.Constitute according to this, the part that can hinder the cathode side of battery enters into the space that the inner surface by the 2nd cathode wall portion 83 impales, so when carrying out the installation exercise of battery, the anterior 81B of negative electrode is difficult for following with contacting of battery and deforms.Therefore, can suppress negative electrode part 81 and follow the battery installation exercise and breakage.
(7) in electric toothbrush 2, middle casing 30 is provided with and controls side seal 24 with opposed 37 that controls housing 60.Constitute according to this, when the internal pressure of body shell 20 is higher than the external pressure of body shell 20, controls side seal 24 distortion and leave from the inner surface of controlling housing 60.Thus, the internal pressure of body shell 20 descends, and becomes too high so can suppress internal pressure.
(8) in addition; When the external pressure of body shell 20 is higher than the internal pressure of body shell 20; And when the internal pressure of body shell 20 is identical with external pressure; Through controlling side seal 24, be immersed in the inside of controlling housing 60 so can suppress liquid with middle casing 30 and opposed 37 sealing of controlling housing 60.
(9) on portable electric toothbrush 1, control side seal 24 as parts setting with internal pressure adjustment function and sealing function.Constitute according to this,, can reduce the volume of electric toothbrush 2 than the structure of appending the check-valves that is used to reduce internal pressure etc.That is to say, can be when suppressing the excessive rising of internal pressure, with electric toothbrush 2 miniaturizations.
(10) in electric toothbrush 2, inner shell 40 with control opposed opposed 37 of housing 60 and be provided with and control side seal 24.Constitute according to this, the vibration of motor 33 is difficult to be delivered to controls housing 60, so can reduce to give the vibration to the hands of user.
(11) in electric toothbrush 2, control side seal 24 and on the cross section that comprises central shaft 24C, be the T word shape.Constitute according to this, and adopted the situation of O shape ring to compare as controlling side seal 24, seal member follows that compressed degree is little with controlling that housing 60 contact, so little at the stress of controlling generation on the housing 60.Therefore, compare the situation that adopts O shape ring, can reduce to control the thickness of housing 60.In addition, follow the slimming of controlling housing 60, can make contributions the miniaturization of electric toothbrush 2.
(12) in addition, even the above-below direction of side seal 24 is controlled in conversion, also can sealing part 24 suitably be installed in the inner shell 40.Therefore,, installation need not to confirm the operation of above-below direction when controlling side seal 24, so the working performance of assembling electric toothbrush 2 increases.
(13) in electric toothbrush 2, on the opposed part of inner surface of the outer surface of inner shell 40 and shell 50, be independent of and control side seal 24, the medial side sealing member 23 with this part sealing is set in addition.Constitute according to this, the vibration that is delivered to the bottom side of shell 50 from inner shell 40 reduces, and also reduces so be delivered to the vibration of controlling housing 60.Thus, the vibration of experiencing in the time of can reducing user use electric toothbrush 2.
(other embodiments)
In addition, embodiment of the present invention is not limited to the illustrative mode of above-mentioned each embodiment, for example can implement after changing according to following mode.And each following variation not only can be applicable to above-mentioned each embodiment, can also different variation be made up each other and implement.
In the above-described embodiment, though used O shape ring as medial side sealing member 23, be alternative in this, also can use the shape sealing member identical with controlling side seal 24.
In the above-described embodiment, though used the sealing member of cross sectional shape as controlling side seal 24 as the T font, be alternative in this, for example also can use following (A) or sealing member (B).
(A) comprising the sealing member (U-loop) that is the U word shape on the cross section of central shaft.
(B) at the sealing member (V-ring) that comprises the shape that is in the shape of the letter V on the cross section of central shaft.
That is to say,, can use any seal member as long as seal member has the foundation elasticity portion that is embedded into inner shell 40 and the distortion elastic that forms continuously with this foundation elasticity portion and under the inside of body shell 20 and outside action of pressure, be out of shape.
In the above-described embodiment, control side seal 24 though on the sealing member installation portion 44 of inner shell 40, installed 1, however in addition, also can control on the housing 60 with sealing part 24 opposed parts on seal member is installed.
In this structure, on the inner surface of controlling housing 60, and be formed with the elastomeric element installation portion on the sealing member installation portion 44 opposed parts of inner shell 40.The formation position of the distortion elastic 24B that controls side seal 24 is embedded into this elastomeric element installation portion from the foundation elasticity portion of controlling side seal (the 2nd controls side seal) that outer peripheral face changes to inner peripheral surface.
The 2nd to control the structure of side seal following,, omitted the distortion elastic 24B in the side seal 24 that controls shown in Figure 4 that is, is equivalent to be provided with and be out of shape the identical shaped parts of elastic 24B towards radially inner side is outstanding from the inner peripheral surface of the 24A of foundation elasticity portion.In addition, the internal diameter of the 24A of foundation elasticity portion is set to the size that can the periphery of controlling side seal 24 be surrounded.
When controlling that side seal 24 is installed on the inner shell 40 and the 2nd controlling side seal and be installed to and control 60 last times of housing, the distortion elastic that the distortion elastic 24B and the 2nd that controls side seal 24 controls side seal is in contact with one another.Thus, each strain portion is retained the state that side is out of shape towards the leading section side from the bottom.
According to said structure, when the internal pressure of body shell 20 is higher than the external pressure of body shell 20, controls side seal 24 and the 2nd and control the distortion elastic distortion of side seal and be separated from each other.Thus, the internal pressure of body shell 20 descends, so it is too high to suppress internal pressure.
In the above-described embodiment, will control side seal 24 with distortion elastic 24B with the inner surface state of contact of controlling housing 60 and be installed on the body shell 20, yet also can change the mounting means of controlling side seal 24 as follows.
Shown in figure 11, be provided with the end face 61 of the front of controlling housing 60 with the sealing member installation portion 44 corresponding positions of inner shell 40.End face 61 forms, on the virtual reference cross section with respect to the inclined of controlling housing 60, and along with toward the outer side from the central side of depth direction Y, from the bottom side of axial Z towards the leading section tilt.That is, control housing 61 front end face 61 than along the virtual reference cross section of extending with the vertical direction of the axis direction of controlling housing 60 towards the interior tilt of controlling housing 60.The distortion elastic 24B that controls side seal 24 is configured to contact with end face 61 and along this end face 61.According to this formation, to compare with above-mentioned embodiment, the deformation extent of distortion elastic 24B is little, and promptly being out of shape elastic 24B, to revert to the power of original form little.Therefore, than above-mentioned embodiment, make distortion elastic 24B begin to be out of shape and diminish with outside pressure differential from the inside of controlling the body shell 20 that housing 60 leaves.Thus, even in the internal pressure rising degree of body shell 20 hour, also can make distortion elastic 24B distortion through the rising of this pressure, thereby reduce internal pressure.
In the above-described embodiment,, be provided with, yet also can change to the protective bulkhead portion of the shape that whole anode extension 71B is covered the parts that anode covers near the part of the 71C of portion that comprise among the anode extension 71B as protective bulkhead portion 87.
In the above-described embodiment, formed protective bulkhead portion 87, yet also can use the protective bulkhead portion that negative electrode installation portion 80 forms that is independent of as the part of negative electrode installation portion 80.
In the above-described embodiment, be provided with pawl 87B, yet also can be (A)～(C) any one below for example the structure modify of limiting unit as being used for the limiting unit that limiting protecting wall portion 87 moves.In addition, in the variation shown in this, except pawl 87B, can also use in the protective bulkhead portion 87.
(A) adopt secure component such as screw that protective bulkhead portion 87 is fixed to the structure on the installation portion perisporium 73.
(B) part with protective bulkhead portion 87 is embedded into the structure on the installation portion perisporium 73.
(C) adopt binding agent etc. that protective bulkhead portion 87 is fixed to the structure on the installation portion perisporium 73.
In the above-described embodiment, though in the leading section side of battery installation section 21 negative electrode part 81 is set, side is provided with anode part 71 in the bottom, however also can conversion negative electrode part 81 with the position relation of anode part 71.The constituted mode of electric toothbrush 2 in this case is following, each element that adopts following manner to replace above-mentioned embodiment.That is to say that " anode installation portion 70 ", " anode part 71 ", " anode contact site 71A ", " anode extension 71B " and " anode is near the 71C of portion " replace to " negative electrode installation portion ", " negative electrode part ", " negative electrode contact site " respectively, " negative electrode extension " reaches " negative electrode is near portion ".In addition, " negative electrode installation portion 80 ", " negative electrode part 81 ", " negative electrode rear portion 81A ", " the anterior 81B of negative electrode ", " the 1st cathode wall portion 82 " reach that " the 2nd cathode wall portion 83 " replaces with " anode installation portion ", " anode part ", " anode rear portion ", " anode front portion " respectively, " the 2nd anode wall portion " reaches " the 1st anode wall portion ".Even constitute like this, electric toothbrush 2 also can access effect and the effect identical with above-mentioned embodiment.
In the above-described embodiment, show having used an example of the present invention in the portable electric toothbrush 1 as the small-sized electric device, yet also can be suitable for the present invention for fixed electric toothbrush.In addition, as the small-sized electric device beyond the electric toothbrush, for example in electric shaver, also can use the present invention.
Claims (11)
1. a small-sized electric device possesses body shell, and this body shell comprises the 1st housing and the 2nd housing, and said the 1st housing and said the 2nd housing make up with the part of said the 1st housing and a part of overlapped mode of said the 2nd housing, wherein,
Said small-sized electric device comprises the 1st elastomeric element, and the 1st elastomeric element is set between the part and the part of said the 2nd housing of said the 1st housing, seal between the part with the part of said the 1st housing and said the 2nd housing,
When the internal pressure of said body shell during greater than the external pressure of said body shell; Said elastomeric element is out of shape according to the difference of the external pressure of the internal pressure of said body shell and said body shell, thereby is formed for the access that the outside with the inside of said body shell and said body shell is interconnected.
2. small-sized electric device according to claim 1,
Said the 1st elastomeric element comprises foundation elasticity portion and distortion elastic; Said foundation elasticity portion is installed among said the 1st housing and said the 2nd housing; Said distortion elastic and said foundation elasticity portion form continuously; Contact with among said the 1st housing and said the 2nd housing another
When the internal pressure of said body shell during greater than the external pressure of said body shell; Said distortion elastic is out of shape according to the difference of the external pressure of the internal pressure of said body shell and said body shell, thereby is formed for the access that the outside with the inside of said body shell and said body shell is interconnected.
3. small-sized electric device according to claim 2,
An elastomeric element installation portion that comprises the said foundation elasticity of embedding portion among said the 1st housing and said the 2nd housing,
Said distortion elastic forms with a part another the outstanding mode among said the 1st housing and said the 2nd housing from said foundation elasticity portion.
4. small-sized electric device according to claim 3,
Said the 1st elastomeric element forms ring-type, plays a role as seal member,
The cross section of said the 1st elastomeric element is the T font.
5. small-sized electric device according to claim 4,
Under a part of overlapped situation of the part of said the 1st housing and said the 2nd housing, said the 1st housing is positioned at the inboard with respect to said the 2nd housing,
Said the 2nd housing comprises the peristome that inserts said the 1st housing, the bottom that is arranged on the leading section on the said peristome and is arranged at said peristome opposition side,
The leading section of the said peristome side of said the 2nd housing has than the end face to the interior tilt of said the 2nd housing along the virtual reference cross section of extending with the vertical direction of the axis direction of said the 2nd housing,
Mode that said distortion elastic contacts with the end face with said peristome side and said foundation elasticity portion form continuously.
6. small-sized electric device according to claim 1,
Possess electric toothbrush, electric toothbrush comprises:
Brush portion has the bristle through the vibration cleaning teeth; And
Motor is set at the inside of said body shell, makes said bristle vibration,
Under the situation of using said electric toothbrush, said the 2nd housing person of being used controls.
7. small-sized electric device according to claim 6,
Said motor is installed on said the 1st housing of said body shell,
Said brush portion is installed on the end of said the 1st housing,
Another end of said the 1st housing is inserted into the inside of said the 2nd housing.
8. small-sized electric device according to claim 7,
Said the 1st housing comprise inner shell and with this inner shell combined housing,
Said shell comprises the brush installation portion of the said brush of installation portion,
Said inner shell comprises the motor mounting portion that said motor is installed,
Said brush installation portion and said motor mounting portion are positioned at the inboard mode of said brush installation portion with said motor mounting portion and are configured in respectively on said shell and the said inner shell.
9. small-sized electric device according to claim 8,
The end of the said brush portion side of said inner shell is provided with said motor mounting portion,
The end of a side opposite with said motor mounting portion side of said inner shell is inserted into the inside of said the 2nd housing.
10. small-sized electric device according to claim 9,
Said inner shell comprises battery installation section, and battery installation section is set at the opposition side of said motor mounting portion, and battery is installed on battery installation section,
Said battery installation section is inserted into the inside of said the 2nd housing.
11. small-sized electric device according to claim 8,
Possess the 2nd elastomeric element, the 2nd elastomeric element is set between said inner shell and the said shell, with sealing between said inner shell and the said shell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010258358A JP5592767B2 (en) | 2010-11-18 | 2010-11-18 | Small electric device |
| JP2010-258358 | 2010-11-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102525680A true CN102525680A (en) | 2012-07-04 |
| CN102525680B CN102525680B (en) | 2014-12-03 |
Family
ID=46334537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110371622.1A Active CN102525680B (en) | 2010-11-18 | 2011-11-08 | Small sized electric device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5592767B2 (en) |
| CN (1) | CN102525680B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6226219B2 (en) * | 2012-12-07 | 2017-11-08 | パナソニックＩｐマネジメント株式会社 | Electric oral hygiene device set |
| JP6467745B2 (en) * | 2017-08-30 | 2019-02-13 | パナソニックＩｐマネジメント株式会社 | Electric oral hygiene device set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411054C1 (en) * | 1994-03-30 | 1995-08-17 | Braun Ag | Electrical tooth-brush with fluid sealing |
| CN1394158A (en) * | 2000-11-02 | 2003-01-29 | 皇家菲利浦电子有限公司 | Waterproof housing of apparatus |
| JP3134115U (en) * | 2007-05-25 | 2007-08-02 | 協和工業株式会社 | electric toothbrush |
| CN101207317A (en) * | 2006-12-22 | 2008-06-25 | 松下电工株式会社 | Actuator and electric toothbrush using the same |
| CN101234040A (en) * | 2007-01-31 | 2008-08-06 | 松下电工株式会社 | Oral care device |
| CN101496745A (en) * | 2008-01-28 | 2009-08-05 | 松下电工株式会社 | Toothbrush device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921574U (en) * | 1982-07-30 | 1984-02-09 | 松下電工株式会社 | rechargeable electrical equipment |
| JPH09168554A (en) * | 1995-12-19 | 1997-06-30 | Eiji Okada | Electric toothbrush |
-
2010
- 2010-11-18 JP JP2010258358A patent/JP5592767B2/en active Active
-
2011
- 2011-11-08 CN CN201110371622.1A patent/CN102525680B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411054C1 (en) * | 1994-03-30 | 1995-08-17 | Braun Ag | Electrical tooth-brush with fluid sealing |
| CN1394158A (en) * | 2000-11-02 | 2003-01-29 | 皇家菲利浦电子有限公司 | Waterproof housing of apparatus |
| CN101207317A (en) * | 2006-12-22 | 2008-06-25 | 松下电工株式会社 | Actuator and electric toothbrush using the same |
| CN101234040A (en) * | 2007-01-31 | 2008-08-06 | 松下电工株式会社 | Oral care device |
| JP3134115U (en) * | 2007-05-25 | 2007-08-02 | 協和工業株式会社 | electric toothbrush |
| CN101496745A (en) * | 2008-01-28 | 2009-08-05 | 松下电工株式会社 | Toothbrush device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102525680B (en) | 2014-12-03 |
| JP2012105888A (en) | 2012-06-07 |
| JP5592767B2 (en) | 2014-09-17 |
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