CN1128511A

CN1128511A - Razor head

Info

Publication number: CN1128511A
Application number: CN95190399A
Authority: CN
Inventors: D·科芬
Original assignee: Wilkinson Sword GmbH
Current assignee: Wilkinson Sword GmbH
Priority date: 1994-05-06
Filing date: 1995-05-05
Publication date: 1996-08-07
Also published as: DE69524033T2; CA2165084A1; BR9506206A; DE69524033D1; KR960703366A; EP0707526A1; MX9600128A; IL113557A0; DE9407540U1; WO1995030517A1; EP0707526B1; JPH08512231A; AU695282B2; ATE209085T1; ZA953641B; AU2525795A

Abstract

The invention concerns a razor head for the pivotable holding of a razor blade unit in a shell-like support, which is arranged on the free ends of two movable arms arranged opposite to each other of a fork support for the razor blade unit and with complementary curved shaped surfaces on the under side of the razor blade unit on which they are correspondingly pivotable, whereby a spring biassed plunger is guided between the two arms to retain the separating movement in the stop position during fixing of the razor blade unit.

Description

Razor head

The present invention relates to razor head, it plays the rotation fixation to the slasher unit in the shell-type bearing.The shell-type bearing is installed in two of forked bearing of the slasher unit relatively and movably on the free ends of lever arm, and simultaneously, lever arm can be done corresponding rotation on the curved surface of the complementation on base, slasher unit.Therefore, the spring-loaded plunger be installed between two lever arms in case under halted state during fixed razor-blade lever arm can make split movement.

When using wet shaver, single slasher or two slasher all are embedded in the plastic casing regularly, and plastic casing is fixed on the handle by fixture.These slashers, be fixed on play the installation effect on the handle and slasher can be fixed with the device that separates with handle constitute razor head together.Just considering to provide a kind of fixture can make the slasher rotation at present when shaving, slasher just slides along being scraped the surface in optimal mode like this.

The desired rotatory of slasher on the handle of United States Patent (USP) 3935639 disclosed a kind of safety razors is by guaranteeing that the fixture that slasher is fixed on the shell-type bearing on the handle obtains.Shell-type supporting section on the handle forms the shell-type bearing, and corresponding cylindrical portions may turns round together and makes the slasher unit rotation (axle is parallel with the slasher sword) of transverse axis on handle on this part supporting section and the slasher unit.Owing to a leaf spring has been installed between handle and slasher unit, when the slasher unit rotates, just can have been produced and make its restoring force to the inactive state motion from upper and lower two directions.This device is limited in the anglec of rotation between 20 ° to 90 °.Similar shell-type bearing is also arranged in the United States Patent (USP) 3938247.

European Patent Application No. 0291030A1 discloses and has described a kind of shell-type bearing of razor head, and promptly its can adjust the rotation of slasher according to the difference of exerting oneself when having a shave.The shell-type bearing of the slasher unit of this patent is installed in the free end of two relative mobilizable lever arms, and lever arm forms a forked fixture on the shaver handle.Simultaneously, the shell-type bearing turns round so that each slasher can independently simultaneously be rotated with the complementary curved surfaces on slasher base.The spring action plunger is installed on the handle between two lever arms, and handle can make the slasher unit remain static.For making rotation get back to inactive state, the lid shape cam of plunger front end on slasher turns round.Recessed bayonet socket is positioned at the shell-type district of the shell-type bearing of lever arm self, and for appropriate location and the restriction of guaranteeing handle rotatablely moves, the ledge of slasher unit and this shell-type district are meshed.

Like this, the purpose of this invention just shows: for the simple shell-type bearing of the razor head of wet shaver provides constructive and a fixing and releasing device through improving to have improved, this device is used for engagement, maintenance and the release of slasher unit and is well suited for producing.

The present invention is that problem in the razor head of present technology is above mentioned in such solution: two are parallel to each other and in lever arm that can relative motion under the spring mechanism effect is installed in rectangle shell on the handle, and two lever arms all are furnished with corresponding support component.Be the fixed razor-blade unit, these parts interconnect and link together with lever arm, and they are also removable when the lever arm relative motion.When razor was installed, the movable plunger under the effect of slasher unit was fixed in the shell-type bearing slasher.Preferablely be, the lever arm of forked fixture is the connecting rod of fixing, but these connecting rods move in opposite shell under the effect of the spring between the lever arm, perhaps, lever arm is the part of the relative motion done of the U-shaped individual plastic spare of molding.

According to a kind of preferably embodiment of this invention, mutually near being separated from each other again, and support part is meshing with each other under stationary state as finger in the setting of bracing or strutting arrangement, and these parts can separate under the direct or indirect effect of plunger.For example, the finger of bracing or strutting arrangement can be used as connecting rod and flexiblely is connected in or is fixed on the lever arm of forked fixture, and the effect of plunger just can make its release like this.Preferablely being, an elongated slot is all arranged on each finger, is the lobate spring support component that has with elongated slot respective elongated ledge on the elongated slot.Protuberance is in the elongated slot on (inactive state) insertion finger under the power effect and when elongated slot is coaxial.The supporting projection of flat support component forms the ledge that intersects near plunger, the supporting projection acting in conjunction on fork fork branch and the plunger.

According to a kind of preferably embodiment of this invention, shell is to form like this: there is a passage that supplies plunger to pass in the front; The passage that has two operating knobs for lever arms to pass on each limit, they are symmetrical; Shell also is included as the stop ledge that the chassis is provided with.The chassis is being supported with the lever arm of shell-type support section, supporting mechanism and the plunger of spring action, and they are as the preceding parts of assembling.Therefore suggestion: the lateral flange that two hinged lever arms are housed on each limit on chassis, a socket that supports lobate spring support component also is housed on the chassis, the chassis also has sidewall in the vertical, the horizontal alcove that the rotation spring is installed is arranged on the sidewall, and the corresponding alcove of the finger of fittable slackening device is arranged.The stationary seat of stop plunger spring is housed on the lateral connector of sidewall.In addition, the guide groove setting of the elongate guide of plunger from facing toward, the guide rail on each limit of plunger injects in the guide groove, and this method is very favourable.By this method, the parts before the assembling form a complete module, are adorning the whole razor head bracing or strutting arrangements that support the slasher unit in the module.This parts just can make self be arranged in simple technical approach by single operation at last and be fixed in the shell from above.

By description and relevant accompanying drawing, introduce further embodiment, the feature and advantage of theme of the present invention according to a kind of preferably razor head embodiment that invents.

Fig. 1 is the plane of shaver handle, and the shell of its razor head is in the uncovered state.

Fig. 2 is the side view that the handle of the razor head among Fig. 1 is housed.

Fig. 3 is the rearview that the handle of the razor head among Fig. 1 is housed.

Fig. 4 is the chassis plane that shows all parts of razor head.

Fig. 5 is the side view on chassis.

Fig. 6 is the rearview of chassis half one.

Fig. 7 is plane, side view and the rearview of plunger.

Fig. 8 is the external view, the internal view of plane of pitman arm that has the forked fixture of support shell.

Fig. 9 is the corresponding views of the right lever arm of forked fixture.

Figure 10 is the embodiment according to the another kind of forked fixture that bracing or strutting arrangement is housed of perspective picture.

Figure 11 is the third the forked fixture embodiment that bracing or strutting arrangement is housed that draws according to perspective.

Figure 12 is upward view, side view and the plane of lobate spring support component.

Wet shaver is made up of a handle and the slasher unit that is fixed on the handle basically.Do not show slasher among the figure.Can obtain slasher by known technology, and only need to install a shell-type bearing that cooperates with handle on the slasher.This further describes hereinafter.

Fig. 1 has shown the handle 1 of razor head, and shell 2 just is contained on the handle 1.Wherein removed the lid of shell so that can see its internal structure clearly.Therefore, the shell among the figure is rectangle, and it comprises the upper channel 6 of chassis 3, sidewall 4,5 and front side.By passage 6, the fixture of fixed razor-blade unit freely outwards stretches under assembling finishes state.7,8 and cylindrical fixed salients of two rectangle ledges divide 9 to form an integral body and be arranged on the chassis chassis in the pie graph 4 by triangular layout.

The upper channel 6 of front side is divided into 11,12 and center semi-circular portion of channel region again.Two lever arms (not showing) that the forked fixture of slasher shell-type bearing is housed pass through from

channel region

11,12, and the center semi-circular portion forms outer shell passage 10 so that the plunger among Fig. 7 can pass through.And in shell, two

wing passages

13,14 vis-a-vis.By them, the operating knob of the lever arm that assembles can highlight, and the user of shaver clicks button and just can discharge or fixed razor-blade.

From Fig. 2, can also find out, for being fixed on optimal position to slasher, the shell camber of razor head.

Base plate among Fig. 4 or chassis are that rectangular parts and sidewall 18,19 constitute by one basically.Two flanges 16,17 on the rectangular member lay respectively at each side and face toward mutually, sidewall 18,19 form a space 22 in case hold among Fig. 7 by the plunger of spring action.For reaching this purpose, guide groove 20,22 in being equipped with on the sidewall 18,19 can be directed along the longitudinally extending guide rail 24,25 in plunger 23 each limit in guide groove.

Placed channel that staggers each other 26,27 in addition and coaxial horizontal alcove 28,29 all are located on the sidewall 18,19 on chassis 15.The other part of shell-type bearing described below also is installed on the sidewall, and by guiding.At last, half high lateral connector 30 couples together sidewall 18,19, is processed with the stopping support saddle 31 of a helical spring that is used for stop plunger 23 (not having to show) on the connector 30.

For the lever arm of the shell-type bearing in the connection layout 8,9 and make its rotatable motion, the hole 32,33 of two flanges 16,17 all is arranged to the form that concaves, can also pick out

34,35 from Fig. 8,9.In addition, also have a fixed socket 36 on the chassis 15, it is to be used for fixing lobate spring support component 37 among Figure 12.

Plunger 23 among Fig. 7 comprises a rectangular cross section plunger button 38, the cam face of button 38 and slasher (not showing) coordinative role.Plunger button 38 is formed on the cylinder-shaped link 39, and connector 39 is formed on again on the parts 40 of a rectangular hollow cross-section, has two guide rails 24,25 on each limit of these parts 40.Helical spring is equipped with in hollow component 40 inside, and this spring is between the last stopping support saddle 41 of the following stopping support saddle 31 on chassis 15 and plunger.For the slasher unit is fixed in the shell-type bearing, plunger overcomes helical spring effect and moves down.Two cams 42,43 discharge the lever arm of shell-type bearing.Lobate spring support component 37 shown in shell-type bearing and relative Figure 12 hereinafter will be described in more detail.

Fig. 8 has shown the pitman arm 44 of shell-type bearing with several views.Under the state after the assembling, the pitman arm bottom is positioned at 32 li of the holes of flange 16 on chassis 15 and rotatable, and pin 34 is arranged on it.About the centre position, an operating knob 45 is arranged on the lever arm 44 greatly.Operating knob 45 stretches in the shell by wing passage 13 and can allow the user rotate lever arm 44 inwards.Because lever arm 44 highlights in shell by channel region 11, be positioned at free-ended shell-type supporting section and just can form a shell-type bearing to connect the slasher unit.The stayed surface 47 of supporting section 46 is very smooth, does not have alcove also not have the teat part on it, forms a semicircle annulus extension of stretching outwardly, and this part extends to the back of corresponding hook-shaped ledge on the slasher.When having a shave, hook-shaped ledge can be caught and fixed razor-blade.So just guaranteed that the slasher in the shell-type bearing has rotatory.

About the height place of operation knob 45, a finger of stretching out 49 is housed inwardly on the lever arm 44 greatly, owing to rotatablely moving of lever arm 8, its angle is slightly larger than 90 ° of angles and is inclined upwardly a little.Free end at lever arm has an elongated slot 50.It is a supporting construction.When two lever arms of shell-type bearing rotated by desired distance each other, it can support two lever arms.For reaching this purpose, the right lever arm 51 of the shell-type bearing of Fig. 9 and lever arm 44 symmetries of having described.A finger 52 of stretching inwardly is housed on the right lever arm 51, an elongated slot 53 is arranged on the finger 52.When being in the Support Position, two

elongated slots

50,53 are coaxial each other, and by its inherent tension force, are meshed with respective elongated ledge 54 on the lobate spring shape support component 37 of support lever arm 37.

Lobate spring shape support component 37 is fixed on the support socket 36 on chassis 15 by a fixture 55, for example can be fixed by goo.Launch in the zone of this lobate spring shape support component between two the limit walls 18,19 that are in the chassis 15 under the horizontal alcove 28,29, and after assembling, a horizontal helical spring is installed between lever arm 44,51 and the stop extension 56,57.With the bending area 58 of zone 38 corresponding fixing support components 37 be that the ledge of T shape is formed basically by one, ledge comprises an elongated ledge 54 and a laterally projecting part 59.As mentioned above, elongated ledge works to support them with

elongated slot

50,53 1.If plunger 23 is contacted when fixed razor-blade, the just effect immediately under the support of plunger cam 42,43 of laterally projecting part 59.Under the helical spring effect of the horizontal activity between lever arm 44 and 51, lever arm 44 and 51 can outwards move, the supporting

section

46,46 of lever arm ' toroidal extension 48,48 ' under the corresponding fixture of slasher, mesh, so also just slasher is fixed in the razor head and has gone.

Figure 10,11 has shown alternative embodiment of a bracing or strutting arrangement.In the drawings, when supporting, plunger directly acts on the finger of a flexibility, and correspondingly, this finger acts on again among Figure 11 on the rotatable finger.The front area of finger all is equipped with support lugn 60,61 among the figure.

Slasher be to be installed, the user of razor head need push two

operating knobs

45,45 on lever arm 44,51 limits of razor head ', and under helical spring effect around the inside rotation lever arms of pin 34,35.Helical spring is installed between

stop extension

56 and 57, and it is not revealed on figure.Under this effect,

finger

49,52 between the limit on chassis 15 wall 18,19 towards the other side rotation, up to they elongated

slot

50,53 each other in line.So lever arm just can play a supportive role.Because the elongated ledge 54 of lobate spring shape support component 37 is inserted into 50,53 li of elongated slots under the tension force effect, plays a supporting role.The supporting section 46,46 ' now of shell-type bearing is in the zone of plunger 23 and prepares the dressing slasher.When plunger depressed 23, lever arm 44,51 is moved back into the original position that they are outwards faced upward automatically.This be and then on the slasher corresponding cam face with the razor head acting in conjunction.By means of guide rail 24,25, plunger 23 is pressed down by past when overcoming helical spring effect, 20,21 li of the guide grooves on guide rail 24,25 reeve chassis.The rising of the laterally projecting part 59 by support component 37, plunger 23 also utilizes cam 42,43 that fixation is provided, and the helical spring elastic force between the lever arm 44 and 51 makes it outwards to do return motion like this.Then by means of the

toroidal extension

48,48 under the corresponding hook on the slasher ', slasher just has been contained on the razor head.Therefore supporting section 46,46 ' once more provides the rotatory of slasher unit.

Removing slasher, the user also need only pressing operation button 45,45 ', lever arm is inwardly rotated, the shell-type bearing has unclamped the slasher of using on the one hand like this, is preparing the slasher that uses next end to use on the other hand again.

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 45′. 46. 46′. 47. 48. 48′. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61.

Claims

1. the razor head of a wet shaver, be used for making the slasher unit to be fixed in the shell-type bearing and can make it and rotate, the shell-type bearing is installed in the free end of two lever arms that can do to relatively move of the forked fixed mechanism that supports the slasher unit, there is curved surface the bottom side of slasher unit, on this surface, they can correspondingly rotate, at this, the plunger of spring action is contained between two lever arms so that can allow to be in the outside motion of two lever arms under the stationary state when the slasher unit is installed, it is characterized in that: two lever arms (44,51) be installed in the last shell that is rectangle basically of handle (1) (2) lining, they be parallel to each other and the work that can overcome spring assembly as relative motion; Corresponding support component (elongated slot 50,53, elongated ledge 54) supports when preparing the slasher unit is installed mutually, when lever arm (44,51) when doing relative motion, and these support components that lever arm (44,51) connects together are also removable, when slasher is installed, the slasher unit is fixed on the shell-type bearing (46,46 ') at the movable plunger under the effect of slasher unit.

2. according to the described razor head of claim 1, it is characterized in that: the lever arm of forked fixture (44,51) is to be fixedly coupled (34,35), and under the spring action between the lever arm, this connection can be moved to shell; Perhaps the part of these two lever arms U-shaped unitary plastic part that is moldings can move between them mutually.

3. according to claim 1 and 2 described razor heads, it is characterized in that: helical spring is installed between two lever arms (44,51) as spring assembly.

4. according to each described a kind of razor head in the claim 1 to 3, its characteristics are: the form of supporting mechanism is mutual to being separated from each other again as finger, under stationary state, support part (60,61 and 50,53) is meshing with each other, under the direct or indirect effect of plunger (23), these parts can be separated from each other.

5. according to a kind of razor head of claim 4, it is characterized in that: the elongated slot (50,53) as supporting construction is all arranged on each finger, a lobate spring shape support component (37) is being adorned in elongated slot (50,53) top in the finger, elongated ledge (54) on these parts is corresponding with elongated slot (54), when elongated slot is coaxial (fixed position), elongated ledge (54) injects elongated slot (50, the 53) lining of finger constantly under spring action and at that.

6. according to the razor head of claim 5, it is characterized in that: the supporting projection (54) of flat support component (37) forms near plunger (23) intersects ledge (59), and cam (42, the 43) acting in conjunction on it and the plunger is to play a supportive role.

7. according to any one the razor head in the claim 1 to 6, it is characterized in that: a passage (10) that supplies plunger (23) to pass is arranged on the front side of shell (2), the symmetric channel (13,14) that its each side has the operating knob (45,45 ') of two confession lever arms (44,51) to pass through, it also has the stop ledge (7,8,9) on a chassis (15), the lever arm (44,51) and the spring biasing plunger (23) of band shell-type supporting section (46,46 '), bracing or strutting arrangement carried on chassis (15), and they are as preceding parts of assembling.

8. according to the razor head of claim 7, it is characterized in that: the lateral flange (16,17) that is used for hinged lever arm (44,51) is housed on the both sides of chassis (15), the middle part on chassis also is provided with a support socket that supports lobate spring shape support component (37), the chassis also has sidewall in the vertical, the corresponding alcove (26,27) of helical spring horizontal alcove (28,29) being installed and fittable slackening device finger (49,52) being arranged is arranged on the sidewall, whereby, the lateral connector (30) of sidewall (1 8,19) is carrying the stopping support saddle (31) of stop plunger spring.

9. according to the razor head of claim 8, it is characterized in that: the elongate guide that is used for plunger (23) is arranged on sidewall (18,19), be to be provided with from the guide groove (20,21) that faces toward, the guide rail (24,25) of each side of plunger (23) injects guide groove (20,21) lining.