Shaving blade cartridge
10093030 ยท 2018-10-09
Assignee
Inventors
- Dimitrios Efthimiadis (Nea Kypseli, GR)
- Panagiotis ZAFIROPOULOS (Wallingford, CT, US)
- Ioannis Bozikis (Koukaki-Athens, GR)
- Panagiotis MOUSTAKAS (Petroupoli, GR)
Cpc classification
B26B21/4068
PERFORMING OPERATIONS; TRANSPORTING
B26B21/4012
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
A shaving blade cartridge includes a housing extending along a longitudinal axis, having a top side, a bottom side opposite to the top side and two longitudinal sides. The two longitudinal sides extend longitudinally along the longitudinal axis between the top and bottom sides. The housing is provided with at least one protrusion. The shaving blade cartridge further includes a cutting blade mounted in the housing between the longitudinal sides, and having a cutting edge extending along the longitudinal axis, and a clip retaining the cutting blade in the housing and having at least one leg. The leg of the clip has a recess, and the recess cooperates with the protrusion of the housing.
Claims
1. A shaving blade cartridge comprising: a housing extending along a longitudinal axis, having a top side, a bottom side opposite to the top side and two longitudinal sides extending longitudinally along the longitudinal axis between the top and bottom sides, the housing including at least one cavity extending from the top side toward the bottom side of the housing and laterally delimited by surrounding walls, at least one protrusion disposed in the cavity and extending from one of the surrounding walls, at least one cutting blade mounted in the housing between the two longitudinal sides, and having a cutting edge extending along the longitudinal axis, at least one clip retaining the at least one cutting blade in the housing and having at least one leg, wherein the at least one leg of the at least one clip includes a recess, and the recess cooperates with the at least one protrusion provided in the at least one cavity of the housing.
2. The shaving blade cartridge according to claim 1, wherein the at least one clip includes a clip body and the at least one leg includes two legs, the clip body extending between the two legs, the clip body extending along the transversal axis, the transversal axis being transverse to the longitudinal axis, and wherein the clip body is located on the top side of the housing of the shaving blade cartridge.
3. The shaving blade cartridge according to claim 2, wherein the at least one protrusion includes two protrusions, the recess of each of the two legs of the at least one clip cooperates with one of the two protrusions, and wherein the protrusions are located on either side of the at least one cutting blade.
4. The shaving blade cartridge according to claim 3, wherein the recess is a through hole, the at least one clip is made of metal, and the recess is cut in the at least one leg of the at least one clip.
5. The shaving blade cartridge according to claim 1, wherein the at least one cavity is laterally delimited by the wall, the at least one protrusion is provided on the wall, and the at least one leg of the at least one clip is received in the at least one cavity.
6. The shaving blade cartridge according to claim 1, wherein the at least one cavity is a blind hole.
7. The shaving blade cartridge according to claim 1, wherein the at least one cavity is a through hole extending from the top side to the bottom side of the housing.
8. The shaving blade cartridge according to claim 7, wherein the bottom side of the housing includes a window, the at least one cavity emerging in the window, and wherein the at least one leg has a free end, the free end of the at least one leg being located in the window.
9. The shaving blade cartridge according to claim 1, wherein the housing includes a guard bar and a rear cap, the guard bar being forward of the cutting edge and the rear cap being rearward of the cutting edge, and the at least one cavity is arranged in or adjacent to the rear cap.
10. The shaving blade cartridge according to claim 1, wherein the housing includes a guard bar and a rear cap, the guard bar being forward of the cutting edge and the rear cap being rearward of the cutting edge, and the at least one cavity is arranged in or adjacent to the guard bar.
11. The shaving blade cartridge according to claim 1, wherein the at least one protrusion has a length along a lateral axis intersecting the longitudinal axis, and has a height which increases along the length.
12. A shaver comprising a handle and a shaving blade cartridge according to claim 1, the shaving blade cartridge being connected to the handle.
13. A shaving blade cartridge comprising: a housing extending along a longitudinal axis, having a top side, a bottom side opposite to the top side and two longitudinal sides extending longitudinally along the longitudinal axis between the top and bottom sides, the housing including at least one cavity extending from the top side toward the bottom side of at least one of the two longitudinal sides and laterally delimited by surrounding walls, at least one protrusion disposed in the at least one cavity and extending from one of the surrounding walls, at least one cutting blade mounted in the housing between the two longitudinal sides, and having a cutting edge extending along the longitudinal axis, at least one clip retaining the at least one cutting blade in the housing and having at least one leg, and wherein the at least one leg of the at least one clip includes a recess, and the recess cooperates with the at least one protrusion.
14. The shaving blade cartridge according to claim 13, wherein the at least one clip includes two clips retaining the at least one cutting blade in the housing, each of the two clips having at least one of the at least one legs.
15. The shaving blade cartridge according to claim 14, wherein the at least one leg of each of the two clips includes two legs, each of the two legs cooperating with a respective one of the at least one protrusion provided on the housing, one of the two legs of each of the two clips is located in front of the cutting blade, and the other one of the two legs of each of the two clips is located rearward of the cutting blade.
16. The shaving blade cartridge according to claim 15, wherein the at least one cavity includes four cavities, the at least one leg of the two legs of each of the two clips being received in at least one of the four cavities the other of the at least one leg of the two legs of each of the two clips cooperates with the at least one protrusion provided on one of the two longitudinal sides.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Other characteristics and advantages of the embodiments of the present invention will readily appear from the following description of one of its embodiments, provided as non-limitative examples, and shown in the accompanying drawings.
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(13) On the different figures, the same reference signs designate like or similar elements.
DETAILED DESCRIPTION
(14)
(15) As illustrated in
(16) As depicted in
(17) The housing 9 may also include, as can be seen in
(18) The housing 9 can be made of plastic material. However, other materials may be used. Moreover, the housing can be made with a combination of two or more different materials. For example, a part of the housing may be made with a first material, whereas the other part of the housing is made with a second material. The housing 9 can for example include, on the bottom side 13, a connection mechanism 31 adapted to connect the handle 7. The connection mechanism 31 can thus allow the release and/or the attachment of the shaving blade cartridge 1 to the handle 7.
(19) The housing 9 also includes a blade receiving section 33, as represented in
(20) The blades 35 are mounted in the housing 9 in the blade receiving section 33 between the first and second longitudinal sides 15, 17 of the housing and between the first and second lateral sides 19, 21 of the housing 9. As shown in
(21) For example, the cutting blades 35 are L-shaped. The cutting blades 35 thus have a cutting edge portion 43, a guided portion 45, and a bent portion 47 which is intermediate to the cutting edge portion 43 and the guided portion 45. The cutting edge portion 43 extends along a cutting edge portion axis. Advantageously, the cutting edge portion axis of all cutting blades 35 are positioned parallel to each other.
(22) In an embodiment of the present invention, each cutting blade 35 is freely mounted in the housing 9, as can be seen in
(23) In other embodiments of the present invention, the blades could be bent blades, as described for instance in patent application WO2013/050606.
(24) Each cutting blade 35 is retained in the housing by a clip 55.
(25) The clip 55 includes at least one leg 59. The leg 59 of the clip 55 has a recess 61. As shown in
(26) The clip can be made of a formable material, for example a thin sheet of suitable metal. However, other materials may be considered. The width 1 of the clip can be sensibly constant along its length. Also, as represented on
(27) In other embodiments of the present invention, the width 1 and the thickness ep of the clip can be variable.
(28) The clip 55 may be made of metal material, for example thin metal. The recess 61 may be cut in the leg 59 of the clip 55.
(29) In the embodiment of the present invention depicted in
(30) In the embodiment of the present invention of
(31) In another embodiment of the present invention, the clip can also be manufactured by injection molding. A polymer material (for example a reinforced polymer material) can be molded to form the clip, and then the clip can be pressed to reach its final form. The clip in polymer material can be then coated or plated.
(32) In a mounted position of the clip 55, as represented in
(33) The recess 61 of the legs 59, 65 cooperate with a protrusion 71 provided on the housing 9.
(34) The recess 61 can have different shapes. For example, the recess 61 can be square or rectangular, as represented in figure l la. The recess can also be circular, as represented in
(35) In another embodiment of the present invention, the recess can be sensibly L-shaped, such as represented in
(36) The protrusion 71 is provided on the housing 9 and can have a shape which enables a good cooperation of the recess 61 with the protrusion 71. The protrusion 71 can have a first end 73 and a second end 75. The second end 75 can project beyond the first end 73, as best described below.
(37) In at least one embodiment of the present invention, as represented in
(38) The wall 79 defining the cavity 77 may be straight, in order to facilitate the mounting of the legs 59, 65 of the clip 55 in the cavity. In addition the walls may be orthogonal to the shaving plane, which is the plane defined as being the plane passing through the surfaces of the housing directly located forward of the cutting blade edge and rearward of the cutting blade edge. In another embodiment of the present invention, the walls are angled with regard to the shaving plane. For example, the angle between the wall 79 and the shaving plane may be between 70 and 100.
(39) The cavity 77 may have a rectangular shape, a square shape or a circular shape. The legs of the clip 59, 65 are inserted into the cavity 77. For example, the shape of the cavity is complementary to the shape of the legs of the clip. The shape of the clip 55, and more particularly of the legs 59, 65, is complementary to the shape of the cavity 77 and can be different from the shape described above with reference to
(40) More precisely, viewed in a transverse section, the shape of the legs 59, 65 of the clip 55 can be rectangular as represented in
(41) However, the shape of the legs 59, 65 of the clip 55 can also be oval, as represented in 10b. The leg 59, 65 can then be inserted in a cavity 77 which is oval.
(42) In another embodiment of the present invention, as represented in
(43) The legs 59, 65, viewed in a transverse section, can also be L-shaped, as represented in
(44) The cavity 77 may be a blind hole. In other embodiments of the present invention, the cavity 77 may be a through hole extending transversely to the longitudinal axis (X-X) form the top side 11 to the bottom side 13 of the housing 9.
(45) In the first embodiment of the present invention, represented in
(46) In the first embodiment of the present invention, represented in
(47) In a second embodiment of the present invention, as represented in
(48) In an embodiment of the present invention, the housing 9 can include two protrusions 71, 83, one being located on the first longitudinal side 15, the other being provided on the second longitudinal side 17. The protrusions 71, 83 protrude from one of the longitudinal sides 15, 17. The protrusions 71, 83 can alternatively protrude from one of the lateral sides 19, 21, for example when the recess 61 of the clip is L-shaped, such as represented in
(49) The protrusions 71, 83 may also be located on other areas of the housing 9, as long as the protrusions 71, 83 cooperate with the recess 61 provided on the clip 55 such that the clip 55 can retain the cutting blades 35 in the housing 9.
(50) As previously mentioned, the protrusions 71, 83 can include a first and a second end 73, 75. For example, and as represented in
(51) In the first embodiment and as represented more precisely in
(52) In a mounted position of the clip 55, as represented in
(53) The housing 9 can include a guard bar 87 and a rear cap 89. The guard bar 87 is forward of the cutting edge 41. The guard bar 87 is located in front of the cutting edges 41. The rear cap 89 is located rearward of the cutting edge 41. In other words, the rear cap 89 is behind the cutting edge 41. The rear cap 89 can be provided with a lubricating strip. In other words, the rear cap 89 can include, as shown in
(54) The cavities 77, 81 may be located in or adjacent to the rear cap 89. The cavities 77, 81 may also be arranged (or located) in or adjacent to the guard bar 87. The cavities 77, 81 may also be arranged adjacent to the rear cap 89 and to the guard bar 87. For example, as represented in
(55) In the embodiment of the present invention represented in
(56) For example, the clips 55 may have each a leg 59 cooperating with a protrusion 71 on the guard.
(57) In other embodiments of the present invention, the two clips may be different. For example, where one of the clips has two legs extending each in a cavity 77, 81, the second clip may have two legs cooperating with protrusions provided on the longitudinal sides of the housing. For example, the legs of the second clip may extend outside the shaving blade cartridge, whereas the legs of the first clip may extend inside the shaving blade cartridge 1. Alternatively, a first leg of each clip 55 may extend in a cavity whereas a second leg of each clip 55 extends outside the shaving blade cartridge.
(58) The distance between the two clips 55 is smaller than the length of the cutting blade 35. The two clips 55 each have a portion which is in front of the cutting blade 35. The portions of the clips 55 in front of the cutting blade retain the cutting blade 35. The portion of clips 55 in front of the cutting blade 35 touches the cutting blade 35 when the blades are in a rest-position (for example when no external force is applied to the shaving blade cartridge).
(59) The clip 55 can include an aluminum alloy material. The blade 35 can be made of a steel alloy material. The different materials between the blade and clip enhance cathodic protection and blade longevity.
(60) The clip 55 can have mechanical elastic properties, which enable the elastic deformation of the leg of the clip 55 in order to provide a gripping action carried only by the inherent resistance to deformation of the material for the fastening of the leg of the clip with the protrusion. The clip 55 of the first embodiment of the present invention, as shown in
(61) In a first step, the legs 59, 65 of the clip are positioned in front of the cavities 77, 81. In a second step, the clip 55 is moved toward the housing 9 such that the legs 59, 65 of the clip 55 are inserted within the cavities 77, 81. The legs 59, 65 of the clip 55 are pushed along the lateral axis Z-Z in the direction of the shaving blade cartridge until the clip 55 reaches its final position, in which the recess 61 of the legs 59, 65, cooperates with the protrusion 71, 83, such as previously described.
(62) In the second embodiment of the present invention, represented in
(63) The clip 55 cannot be removed from its final position in a normal use. The clip is permanently positioned. Indeed, when being pulled along the lateral axis Z-Z in a direction opposite to the shaving blade cartridge 1, the second end 75 of the protrusion 71, 83 forms an abutment for the external contours of the recess, such that the clip 55 is locked within the cavity 77, 81. Moreover, the protrusion can be plastically deformed.
(64) The cooperation of the recess 61 and the protrusion 71, 83 forms a locking device. The actions of mounting the clip 55 with regard to the housing 9 and locking the clip 55 in the housing 9 are simultaneous. No additional bending step is necessary to fasten the clip to the housing. The clip 55 is secured inside the guard and/or the rear cap of the housing 9, which limits the risk of removing the clip unintentionally.