CN1077485C

CN1077485C - Rotary electric shaver

Info

Publication number: CN1077485C
Application number: CN97104398A
Authority: CN
Inventors: 河原学
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1996-05-28
Filing date: 1997-05-27
Publication date: 2002-01-09
Anticipated expiration: 2017-05-27
Also published as: TW354772B; KR970073896A; JPH09313757A; CN1169352A; KR100476791B1

Abstract

To easily judge the floated state and swung state of a blade head, efficiently and easily put the blade head on the skin, reduce the gap between the outer diameter of an outer blade and the outside wall of an outer blade frame, and make the blade head compact. A cylindrical fixed frame 2 is fixed on the main body 8 side of a rotary electric razor, and a cylindrical outer blade frame 1 supporting an outer blade 3 is provided with an inside wall surrounding the peripheral wall section 2a of the fixed frame 2 from the inside A and an outside wall 10 surrounding the peripheral wall section 2a. The inside wall 9 of the outer blade frame 1 is provided with a coupling projection 12 slidably coupled with a coupled section 11 provided on the inner face of the peripheral wall section 2a of the fixed frame 2 and serving as the swing fulcrum of the outer blade frame 1.

Description

Rotary electric shaver

The present invention relates to rotary electric shaver.

Existing rotary electric shaver is opened the shown in Figure 11 of flat 5-146564 communique as the spy, is will outside 3 to be set on the outside frame 1 and the sword head 6 of formation, main body 8 is floated support freely.The outside frame 1 that fixedly has the outside 3 in a plurality of swords hole by inner edge 4, when can support it and fluctuate with floating spring 59, in the periphery of outside frame 1, is provided with a plurality of hook portion 66.Also have, the outer circumferential side of outside frame 1 be furnished with that the hook portion 66 of described outside frame 1 had shake freely can in conjunction with the fixed frame 2 of groove 11a.This fixed frame 2 is fixed on a side of main body 8 by the set screw 67 in the bottom of fixed frame 2.Also have, 4 among the figure is inner edge, and 5 is the inner edge frame, and 54 is active connection, and 55 is motor axis of rotation.

As existing another example, there is the spy to open flat 5-146564 communique, as shown in figure 12, make outside 3 itself be subjected to floating support by floating spring 59.

But each example like that at the outer circumferential side of outside frame 1 freely that floats, is furnished with fixed frame 2 as mentioned above, and, have the structure that groove 11a that hook 66 that the bottom that makes outside frame 1 is provided with and fixed frame 2 the insides are provided with is slidingly connected.Be positioned at the upper end of outer circumferential side fixed frame 2, compare with the bottom hook 66 of outside frame 1, be in the top position, the lower part of outside frame 1 is covered by outside B owing to fixed frame 2.Therefore, can only see the top of outside frame 1 from the outside, that is to say that can not see the whole outside that floats, therefore, the user is difficult to see the quick condition of outside frame 1 or shakes state.Especially, mirror is seen on the limit, under the occasion that use on the limit, also exists the action that is difficult to judge sword head 6, the problem that is difficult to make sword head 6 to be pressed close to skin expeditiously.Also have, at the outer circumferential side of outside frame 1, protruded fixed frame 2, therefore, also have the external diameter of sword head 6 to compare with the outside that the sword hole forms, fixed frame 2 is big, can't seek the miniaturization issues of sword head 6.

The present invention proposes a kind of rotary electric shaver in view of the premises, its purpose is, can judge easily the sword head quick condition, shake state, can make it press close to skin expeditiously easily, the footpath of lateral wall of reducing the radius of outside and external diameter simultaneously is poor, to reach the miniaturization of sword head.

In order to solve above-mentioned problem, the feature of rotary electric shaver of the present invention is to make the sword head 6 that on the outside frame 1 of drum type brake outside 3 is set and constitutes, main body 8 is floated freely, and shake the rotary electric shaver that support is freely constituted, it is characterized in that, at main body 8 one side stationary cylinder shape fixed frames 2, on the outside frame 1 of the tubular that supports outside 3, setting is by the madial wall 9 of inboard A round the surrounding wall portion 2a of said fixing 2, with by the lateral wall 10 of outside B round this surrounding wall portion 2a, madial wall 9 one sides at outside frame 1, be provided with in conjunction with protuberance 12, this one makes combined 11 combination sliding freely that is provided with in the surrounding wall portion 2a of fixed frame 2, and becomes the fulcrum that shakes of outside frame 1.Because such formation, can see the lateral wall 10 of whole outside frame 1 from outside B, can realize floating, shaking, the user can easily discern sword head 6 quick condition, shake state, even under the situation of using mirror, also can judge the action of sword head 6, therefore, sword head 6 is pressed close to expeditiously with skin.

Also have, be preferably in and main body 8 clutches sword head 6 one sides freely, described fixed frame 2 is set.In this case, make outside frame 1 in conjunction with protuberance 12 combined 11 at fixed frame 2 under the state that is slidingly connected, screw clamp portion 13 that fixed frame 2 is housed in the main body 8 and the rotation prevention portion 42 that fixed frame 2 is made spline on the outside frame 1 preferably are set.In this case, when can guarantee the spline power of outside frame 1,, just do not need to seek miniaturization for the space of rotation prevention portion 42 is set because rotation prevention portion 42 is set on fixed frame 2 by rotation prevention portion 42.

Also have, on described fixed frame 2, preferably make the elastic support 43 formation integral body that outside frame 1 given thrust, in this case, have the structure that can give outside frame 1 unsteady power by elastic support 43, can prevent to increase simultaneously the part number of packages of fixed frame 2.

Also have, preferably, described elastic support 43 has the 43a of pair of brackets portion that protrudes on direction opposite each other, in such cases, can make the quantity of cradle portion 43a many, and can make the length of cradle portion 43a elongated, therefore can successfully carry out 360 ° of comprehensive shaking of outside frame 1.

Also have, preferably, the central part of the inner edge frame 5 that inner edge 4 is provided with is by resinous centrepin 44, the central part of described outside 3 is supported in rotation freely, simultaneously embed the fixing metal cotter cover 46 of outside 3 sides at sliding part with the centrepin 44 of inner edge frame 5, in this case, in the time of can preventing 5 rotational slides of inner edge frame and the wearing and tearing of the sliding part of centrepin 44 be in the same place with burning.

Also have, preferably,, in this case, the beard bits are come off downwards by peristome 47, can prevent the float portion that the beard bits enter inner edge frame 5 and centrepin 44 the peristome 47 of removing the beard bits being set with around the sliding part of the centrepin 44 of inner edge frame 5.

Below accompanying drawing is briefly explained

Fig. 1 is the part fracture side view of one embodiment of the invention.

Fig. 2 is the vertical view that the sword head outside of one embodiment of the invention is omitted.

Fig. 3 is the side view that the sword head outside parts of one embodiment of the invention decompose.

Fig. 4 is the side view that the sword head inner edge parts of one embodiment of the invention decompose.

Fig. 5 is a part of cross sectional side view of the sword head outside frame of one embodiment of the invention.

Fig. 6 is the upward view of the sword head outside frame of one embodiment of the invention.

Fig. 7 is the vertical view of the fixed frame of one embodiment of the invention.

Fig. 8 is a part of cross sectional side view of the fixed frame of one embodiment of the invention.

Fig. 9 is a part of cross sectional side view of the moving state of sword head tremor of explanation one embodiment of the invention.

Figure 10 is near the profile of centrepin of one embodiment of the invention.

Figure 11 is the profile of the sword head of existing embodiment.

Figure 12 is the profile of the sword head of another existing embodiment.

Symbol in the above-mentioned accompanying drawing below is described:

1, outside frame

2, fixed frame

2a, surrounding wall portion

3, outside

6, sword head

8, main body

9, madial wall

10, lateral wall

11, combined portion

12, in conjunction with protuberance

13, screw clamp portion

42, rotation prevention portion

43a, cradle portion

44, centrepin

46, pin cover

47, remove the peristome of beard bits

A, inboard

B, the outside

Below in conjunction with accompanying drawing, one embodiment of the invention are described.

In the present embodiment, show, main body 8 is floated freely, and shake the example of the rotary electric shaver that supports freely and constitute by the sword head 6 that outside 3 constitutes is set on outside frame 1 cylindraceous.

Sword head installation portion 8a in main body 8 as shown in Figures 1 and 2, is fixing fixed frame 2 cylindraceous.This fixed frame 2 forms the outside nut of screw clamp portion 13 in the outside of its underpart, form internal thread in the inside of the sword head installation portion 8a of main body 8, and fixed frame 2 is fixedly mounted on a side of main body 8 by screw.

On the other hand, as shown in Figure 3, outside 3 central authorities have recess, when becoming the annular convex shape of section domes shape on every side, form a plurality of holes of dredging beard.So, being combined at the 3a of cranse portion that will be convexly equipped with under the state of interior all recesses of outside frame 1 at outside 3 edge parts, the edge part of outside 3 is fixing with heat seal etc. to outside frame 1.

The perisporium bottom of outside framework 1 below form opening section be anti-U word shape, with by the madial wall 9 of inboard A round the surrounding wall portion 2a of fixed frame 2, with by outside B round the lateral wall 10 of this surrounding wall portion 2a and constitute, in the cylindric double wall that constitutes by this madial wall 9 and lateral wall 10, the surrounding wall portion 2a top of the chimeric freely fixed frame 2 that floats.

Also have, become combined 11 groove 11a in the surrounding wall portion 2a the inside of fixed frame 2.On the other hand, be convexly equipped with in conjunction with protuberance 12 at the madial wall 9 of outside frame 1, this one slides with described groove 11a and combines freely, and becomes the swing fulcrum of outside frame 1.Here, the groove 11a of fixed frame 2 extends along the vertical direction, descends two ends to form stop surface 11b, 11c thereon.In the front of the stop surface 11b of upside, the madial wall 9 of outside frame 1 is convexly equipped with slidably hook portion 48.So, when the shaking of outside frame 1, by the position of pressing close in conjunction with protuberance 12 and upside stop surface, 11a descends downwards along groove, as the function that plays the fulcrum of shaking in conjunction with protuberance 12, especially, by combination in groove 11a, at the spline state and under state is freed in prevention fixed frame 2 is combined with the outside frame, therefore in conjunction with protuberance 12, to main body 8 clutches sword head 6 one sides freely, fixed frame 2 is set becomes possibility.

Also have, on the plurality of positions in the double wall of outside frame 1 (in the present embodiment),, be provided with two one group, totally four groups spline ribs 49 as Fig. 5 and shown in Figure 6 in conjunction with two side positions of protuberance 12.On the other hand, on the top of fixed frame 2, as shown in Figures 7 and 8, be convexly equipped with the convex rotation prevention portion 42 that between described

spline ribs

49,49, inserts.In the present embodiment, each that is provided with on fixed frame 2 is convexly equipped with rotation prevention portion 42 respectively in the position above the groove 11a.

Also have, between the

rotation prevention portion

42,42 of fixed frame 2, the elastic support 43 that outside frame 1 is given thrust forms whole.This elastic support 43 is by being the center with a support fulcrum 43b, the 43a of pair of brackets portion that is convexly equipped with on opposite directions forms, each elastic support 43 gives given unsteady power by between the double wall (lateral wall 10, madial wall 9) that inserts outside frame 1 to outside frame 1.

In described outside frame 1, include inner edge parts 7 as shown in Figure 4 in.These inner edge parts 7 have the inner edge that joins below 4 (cutting edge) of outside 3, support the inner edge frame 5 of this inner edge 4, and in the groove of inner edge frame below 5 by compression spring 50 fixing, that combine with the inner edge 4 that is contained in inner edge framework 5 such as heat seal.Give inner edge 4 with given pressure by this compression spring 50, the inner edge 4 and the inner face of outside 3 are joined.

In the center upper portion of inner edge frame 5, as shown in figure 10, the centrepin 44 of outside 3 is loaded into the centrepin support holes 45 that adds the end and is opening, and the bottom 45a and the centrepin 44 of this centrepin support holes 45 join, centrepin 44 rotational slides on this position.

Here, centrepin 44 is that the rotating shaft center by the central authorities of outside 3 and inner edge 4 adds together, by making through fixing resins such as heat seals on the outside 3.This centrepin 44 connects the centre bore 51 of outsides 3, when rotation is subjected to being located at centrepin support holes 45 supportings of central part of inner edge frame 5 freely, embeds metal pin covers 46 such as stainless steel at the sliding part of centrepin 44 and inner edge frame 5.Also have, at centrepin 44, the upper end-face edge combination of pin cover 46 is prevented the hook 52 that breaks away from pin cover 46 and is prevented the ribs 53 of rotating dog cover 46 to form whole.That is to say that pin cover 46 is prevented really owing to be located at the hook 52 of centrepin 44 and broken away from, and can prevent to rotate simultaneously with fixed frame 2 by the ribs 53 that is located at centrepin 44.Especially, for the surperficial sliding that makes pin cover 46 is good, for example also can be with the periphery plating fluorine of pin cover 46.Also have, also can be in the face side of centrepin 44, the shape of texture mapping for example on the surface of centrepin 44, utilizes resin to make the decorative panel on the central indentation surface of modifying outside 3 form integral body in appearance.

Also have, in the side of the centrepin support holes 45 of described inner edge frame 5 a plurality of peristomes 47 of removing the beard crumb are set, the beards bits that fall in the centrepin support holes 45 are fallen downwards by peristome 47.

Also have, in the lower central of inner edge frame 5, as shown in Figure 4, convex with cylindric connecting portion 53, this connecting portion 53 is connected with float connector 54 by floating spring 59.This float connector 54 is fixed on the motor axis of rotation 55 of main body 8 sides.Here, in the periphery of the connecting portion 53 of inner edge frame 5, with at interval, be convexly equipped with a plurality of fitting portions 56 and a plurality of hook portion 57 mutually along Zhou Fangxiang.On the other hand, on float connector 54, shake chimeric a plurality of embeded slots 58 along this Zhou Fangxiang with the fitting projection 56 that described connecting portion 53 is set at interval, the claw part 70 relevant with the hook portion 57 of connecting portion 53, connecting portion 53 combines by hook portion 57 and claw part 70, when preventing to break away from,, float connector 54 is stopped the rotation because fitting projection 56 and chimeric slot part 58 is chimeric by unsteady connecting portion 54.Therefore, the connecting portion 53 of inner edge frame 5 one sides is because the effect of floating spring 59, under the state that fluctuates freely, but rotate with float connector 54 one, the revolving force of motor axis of rotation 55 is by float connector 54 and connecting portion 53, be sent to inner edge frame 5,, between the inner edge 4 of the sword hole of outside 3 and rotation, cut off beard by the rotation of inner edge 4.

Then, sword head 6 is pressed close to skin, as shown in Figure 9, outside frame 1 is in conjunction with protuberance 12 to be the fulcrum rotation.At this moment, the fixed frame 2 that main body 8 one side screws are fixing because have by inside and outside both sides round the double wall (madial wall 9, lateral wall 10) of surrounding wall portion of outside frame 1, so when being provided with the outside frame 1 of outside 3 and shaking, the user can see the lateral wall 10 of whole outside frame 1 from outside B, inclination by lateral wall 10, easily the quick condition of the whole outside frame 1 of identification, shake state, even the limit is seen when use on the mirror limit, also judge inclination, the action of sword head 6 easily, therefore, sword head 6 is pressed close to expeditiously with skin.Also have, the surrounding wall portion 2a of fixed frame 2 compares with the lateral wall 10 of outside frame 1, is in the position of inboard A, so might be with the outer diameter D of the lateral wall 10 of fixed frame 2 ₁Make and form the outer diameter D of the outside 3 in sword hole ₂(Fig. 2) roughly the same size.That is to say, can make the lateral wall 10 of outside frame 1 and poor the diminishing in footpath of the outer diameter D of outside 3, can seek whole sword head 6 miniaturizations.And the madial wall 9 in outside footpath 1 is compared with the surrounding wall portion 2a of fixed frame 2, also is in the position of inboard A, can come off downwards along the madial wall 9 of outside frame 1 so fall the beard bits by the sword hole of outside 3, can prevent that the beard bits from dispersing to the outside of fixed frame 2 B.

Also having, be provided with in the bottom of fixed frame 2 on the sword head installation portion 8a of main body 8 sides by the screw clamp portion 13 of screw combination, is easy so fixed frame 2 is installed to main body 8 sides.Also have, rotation prevention portion 42 (Fig. 7, Fig. 8) is set on the top of fixed frame 2, by this rotation prevention portion 42 being entrenched in the spline ribs 49 (Fig. 5, Fig. 6) of outside frame 1, when increasing can be guaranteed the spline power of outside frame 1, at the bound fraction of fixed frame 2 and outside frame 1 ribs 49 that described rotation prevention portion and spline are used is set, therefore can not need to seek miniaturization, also have the advantage of assembling easily for the space of the ribs 49 that rotation prevention portion 42 and spline use is set.

Also have, on fixed frame 2, carry out monolithic molding, can strengthen the unsteady power of outside frame 1 by the elastic support 43 that outside 1 is given thrust, and elastic support 43 and fixed frame 2 monolithic moldings, so the part number of packages has lacked and easier assembling.And elastic support 43 is made of the 43a of pair of brackets portion that protrudes on opposite directions by the center with support fulcrum 43b, and therefore can reduce with cradle portion 43a is the quantity of the set support fulcrum 43b in center.That is to say, comparing with the situation (plate rack) that a plurality of cradle portion 43a are extended along same direction, the quantity of support fulcrum 43b is saved half, when guaranteeing elastic support 43 configuration spaces easily, increase the quantity of support 43a easily, and the length that can prolong support 43a, can successfully carry out 360 ° of omnibearing shaking of outside frame 1, improved advantage in addition with pressing close to property of skin.

Also have, the pin cover 46 that is arranged on centrepin 44 is made by stainless steel etc., this pin cover 46 can be prevented disengaging really by the hook 52 that is arranged on centrepin 44, and prevent to rotate simultaneously with the sword frame by the ribs 53 that is contained in centrepin 44, so when 5 rotational slides of inner edge frame, can prevent that shotpin cover 46 and the skimming wear and the burning of inner edge frame 5 wait together.Especially giving under the situation of centrepin 44 surperficial texture mappings, centrepin 44 appearances are improved.

Also have, near the sliding part of the centrepin 44 of inner edge frame 5, by a plurality of peristomes 47 of removing the beard crumb are set, so falling into the beard bits of centrepin support holes 45 can be come off downwards by peristome 47, therefore, can prevent that the beard bits from entering the sliding part of pin cover 46 and centrepin support holes 45, prevents to burn together or prevent the rotation of overslaugh inner edge frame 5.

As mentioned above, in the present invention invention claimed in claim 1 is at the outside that makes in the cylinder formula The sword head that on the frame outside is set and consists of floats freely to main body, and shakes and support freely institute's structure In the rotary electric saver that becomes, it is characterized in that propping up at the fixing tubular fixed mount of main body one side Hold arrange on the tubular outside frame of outside by the inboard round the madial wall of described fixed frame perisporium section and by The outside is round the lateral wall of this perisporium section, and madial wall one side at the outside frame arranges in conjunction with protuberance, should The combined section that establishes in the perisporium section of section and fixed frame combines sliding freely, and outside becoming Therefore the fulcrum of sword frame, can see the lateral wall of whole outside frame from the outside, the user identifies easily The quick condition of outside, shake state, even and when using mirror, also can judge well the sword head Action, so the sword head is pressed close to skin expeditiously. Also have, by arranging at the outside frame Double wall in insert the method for fixed frame, can reduce the footpath of the lateral wall of the external diameter of outside and outside frame Difference can be sought the miniaturization of sword head. Also have and since the madial wall of outside framework can prevent the beard bits to Disperse in the outside, so remove easily.

Also have, invention claimed in claim 2 be as claimed in claim 1 with the main body clutch from As a side fixed frame be set consist of, so add effect claimed in claim 1, outside making The sword frame floats in conjunction with protuberance and is combined in freely under the state in combined of the fixed frame, because fixed frame Be installed on the main body, so assembleability is good.

Also have, invention claimed in claim 3 is installed in the first side of sword claimed in claim 1 Fixed frame arranges the screw clamp section of screw clamp on the main body and to the spline of the outside frame spline of fixed frame Section so add effect claimed in claim 2, can guarantee the spline power of outside frame by rotation prevention portion The time,, fixed frame do not need to arrange the huge space of spline owing to being arranged rotation prevention portion, so can Seek miniaturization, and easily assembling.

Also have, invention claimed in claim 4 is on fixed frame claimed in claim 1, externally The elastic support that the sword frame gives thrust has carried out whole shaping, so add effect claimed in claim 1 Really, have by elastic support and give the structure of outside frame with the power of floating, therefore can reduce fixed frame zero The number of packages of part.

Also have, invention claimed in claim 5 is because elastic support claimed in claim 1 has In one pair of support section that direction opposite each other is convexly equipped with, thus effect claimed in claim 4 added, Can make support quantity many, but and the length of extending bracket section, therefore can successfully carry out the outside frame 360 ° of comprehensive shaking can be improved the performance of pressing close to skin.

Also have, invention claimed in claim 6, the center section of the inner edge frame that arranges at inner edge, by Core pin in resinous, when outside claimed in claim 1 center section is supported in rotation freely, Embed the fixing metal pin cover of outside side at the sliding part with the middle core pin of inner edge frame and consist of, Add effect claimed in claim 1, when the rotation of inner edge frame is slided, can prevent and middle core pin Skimming wear, burn together.

Also have, invention claimed in claim 7, with the center of inner edge frame claimed in claim 1 Around the sliding part of pin, the peristome of removing beard bits usefulness is set, so add that claim 6 is described Effect, by come off beard bits downwards by peristome, can prevent the beard bits enter the inner edge frame and in The sliding part of core pin.

Claims

1. rotary electric shaver, the sword head that on the outside frame of drum type brake, outside is set and constitutes, main body is floated freely, and shake freely to support and constituted, it is characterized in that, at the fixing tubular fixed frame of main body one side, on the tubular outside frame of supporting outside, be provided with by the madial wall of inboard round described fixed frame surrounding wall portion, with by the lateral wall of the outside round this surrounding wall portion, madial wall one side at the outside frame, be provided with in conjunction with protuberance, this one makes the combined portion combination sliding freely that is provided with in the surrounding wall portion of fixed frame, and becomes the fulcrum of outside frame.

2. rotary electric shaver as claimed in claim 1 is characterized in that, with the first side of main body clutch sword freely, fixed frame is set.

3. rotary electric shaver as claimed in claim 2 is characterized in that, on the fixed frame that the first side of sword is provided with, the screw clamp portion of screw clamp on the main body is set and to the rotation prevention portion of the outside frame spline of fixed frame.

4. rotary electric shaver as claimed in claim 1 is characterized in that, on fixed frame, the elastic support that the outside frame is given thrust carries out monolithic molding.

5. rotary electric shaver as claimed in claim 4 is characterized in that, elastic support has the pair of brackets portion of protruding on direction opposite each other.

6. rotary electric shaver as claimed in claim 1, it is characterized in that, the inner edge frame central part of inner edge setting rotates the central part that supports outside freely by the centrepin of resin, and the centrepin sliding part of inner edge frame embeds the fixing metal pin cover of outside side simultaneously.

7. rotary electric shaver as claimed in claim 6 is characterized in that, with around the sliding part of the centrepin of inner edge frame, the peristome of removing the beard bits is set.