JP2000300871A - Razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a razor which can be miniaturized by making a free joint means freely inclinedly supporting a spare razor blade cartridge to a holder in the thickness direction, the width direction and their synthesized direction in accordance with unevenness of the face, etc., common. SOLUTION: A head part 10 is stored in the apex part of a holder of a safety razor. The head part 10 is provided with a pair of supporting arms 22a and 22b, a pusher 23, etc. A hooking part 62 is formed at the center of one side of a blade base 61 of a spare razor blade cartridge. Hooking projections 33a and 33b of each of the supporting arms 22a and 22b pinch and support the hooking part 62 and the lower end face is brought into contact with hooking faces 65a and 65b. The upper end part of the pusher 23 is brought into contact with contact faces 71 and 72 of a hooking projection. A spare razor blade cartridge is freely rockably supported by means of the supporting arms 22a and 22b to a holder in the thickness direction, the width direction and their synthesized direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a razor.

[0002]

2. Description of the Related Art A razor holder described in Japanese Patent Application Laid-Open No. H11-9856 is known. A razor head to which a replaceable blade cartridge can be attached and detached is provided at the tip of the holder. The head is provided with a pair of engaging arms that support the blade cartridge so as to be rotatable about a virtual axis along the longitudinal direction of the blade with respect to the holder. Each engagement arm is independently slidable in the front-rear direction with respect to the head, whereby the replacement blade cartridge is swingable in the thickness direction of the replacement blade. Also, a pressing member urged by a spring on the back side of the replacement blade cartridge is in contact between the two engagement arms, and when the replacement blade cartridge is rotated around the virtual axis during shaving. The rotation of the replacement blade cartridge is returned.

[0003] With this configuration, when shaving, the replacement blade cartridge is moved in the thickness direction of the blade body or in the width direction of the blade body according to the unevenness of the face by the action of the engaging arm and the pressing member. It can be tilted to perform shaving.

[0004] There has also been proposed a technique in which a mechanism is provided for allowing the blade itself mounted on the replacement blade cartridge to be movable in the blade width direction with respect to the replacement blade cartridge body (Japanese Patent Application Laid-Open No. 5-184740). .

[0005] A razor holder combining the above two techniques is also known. A razor holder combining these two technologies is a so-called three-dimensional (three-dimensional) blade body in which the razor blade body is combined with the movement of the replacement blade in the thickness direction and the movement of the replacement blade in the width direction. Can be moved. That is, in accordance with the three-dimensional unevenness of the face, the blade body moves in the front-back direction with respect to the head of the engaging arm, pivots around the virtual axis of the blade cartridge, and blade width of the blade body with respect to the blade body. The movement in the direction is performed in a combined state.

[0006]

However, as described above, in the case of a razor holder combining the two techniques, although the three-dimensional (three-dimensional) movement of the spare blade is possible,
A mechanism for moving the engagement arm in the front-rear direction with respect to the head, rotating the replacement blade cartridge about the virtual axis, and moving the blade body in the blade width direction with respect to the replacement blade cartridge body is an independent mechanism, or Since it is composed of members, there is a problem that the number of parts increases and the cost increases.

In addition, when combining different mechanisms and members, it is necessary to obtain smooth movement of the blade body by each mechanism. However, each mechanism must be prevented from interfering with smooth movement of the blade body by other mechanisms. It is necessary to perform a strict position adjustment of and to assemble the mechanism. Therefore, there is a problem that the adjustment work is difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a universal joint means for supporting a replaceable blade cartridge with respect to a holder in such a manner as to be tiltable in a thickness direction, a width direction, and a direction in which the blade body is combined according to unevenness of a face or the like. An object of the present invention is to provide a razor that can be reduced in size by making the razor common.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, the thickness direction and the width direction of the blade are synthesized by universal joint means provided with a replacement blade cartridge in a holder. A razor provided with a restoring means for supporting the spare blade cartridge in a tilted direction and returning the spare blade cartridge to an original position before the tilting, wherein the universal joint means is configured to clamp a supported portion of the spare blade cartridge. The gist of the present invention is that the blade body is constituted by at least a pair of gripping members that grip in such a manner as to be tiltable in a thickness direction and a width direction of the blade body and in a direction in which they are combined.

Therefore, in the first aspect of the present invention, the supported portion of the blade cartridge is sandwiched by at least one pair of gripping members, and the blade is tiltable in the thickness direction, the width direction, and the combined direction thereof. Is gripped.

Also, by using at least one pair of gripping members in common, strict position adjustment of each mechanism can be performed as compared with a case where the replaceable blade cartridge is supported by each independent mechanism so as to be tiltable in each of the above directions. There is no need to go and assemble the mechanism, and almost no adjustment work is required. Further, since the mechanisms are prevented from interfering with each other, the spare blade cartridge moves smoothly.

According to a second aspect of the present invention, in the first aspect of the present invention, a clamped portion is formed in the supported portion of the replacement blade cartridge along a width direction of the blade body. The gist of the invention is that it includes an engagement protrusion extending in a direction facing each other, and the two engagement protrusions sandwich and support the clamped portion.

According to the second aspect of the present invention, in addition to the function of the first aspect of the present invention, the engaging projection formed on each of the gripping members allows the gripper formed on the supported portion of the blade cartridge to be held. The attachment portion is pinched and supported.

According to a third aspect of the present invention, in the second aspect of the present invention, the engaging projection of the gripping member and the portion to be clamped of the replacement blade cartridge are located at the center of the replacement blade cartridge with respect to the holder of the replacement blade cartridge. The gist is that the relative positions of the blades are formed so as to be displaceable so as to allow the blade body to tilt in the thickness direction around the portion.

According to the third aspect of the present invention, in addition to the operation of the second aspect of the present invention, the blade body is tilted with respect to the holder of the replacement blade cartridge in the thickness direction about the center of the replacement blade cartridge. Is acceptable.

The invention according to claim 4 is the invention according to claim 2 or claim 3.
In the invention described in (1), in the gripping member, the replacement blade cartridge is tilted in the width direction of the blade body about the center portion thereof, and the engaging protrusions of the gripping members are separated from each other at the clamped portion. The gist of the present invention is that, when pressed in the direction, it is configured to be more displaced than when not tilted.

Therefore, according to the invention of claim 4, in addition to the effect of the invention of claim 2 or claim 3, the replacement blade cartridge is tilted in the width direction of the blade body about the center portion thereof,
When the engaging projections of the gripping members are pressed in the direction in which the gripping members are separated from each other by the clamped portion, the gripping members are displaced more apart than when not tilted, and clamp and support the clamped portion in that state.

According to a fifth aspect of the present invention, in the invention according to any one of the second to fourth aspects, the contact surface of the engaging projection with the supported portion is in the width direction of the blade body. The grip member is configured to support the replacement blade cartridge rotatably in the width direction of the blade body along the contact surface of the engagement protrusion.

Therefore, according to the fifth aspect of the present invention, in addition to the effect of the second aspect of the present invention,
The replacement blade cartridge is supported by the gripping member so as to be rotatable in the width direction of the blade body along the contact surface of the engagement protrusion.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the gripping member elastically clamps and supports the supported portion of the blade cartridge. The gist is that.

Therefore, according to the invention of claim 6, in addition to the effect of the invention of any one of claims 1 to 5,
The supported portion of the spare blade cartridge is elastically sandwiched and supported by the gripping member.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the restoring means includes a pressing member abutting on the replacement blade cartridge, and urging the pressing member against the replacement blade cartridge in a contact direction. Wherein the pressing member has a cam surface, and the cam surface is to bring the blade cartridge into a restoring position by a cam action when the cam member contacts the supported portion. .

Therefore, according to the seventh aspect of the present invention, in addition to the operation of the first aspect of the present invention, when the cam surface of the pressing member is brought into contact with the supported portion of the replacement blade cartridge by the urging force of the urging means. By the action of the cam, the blade cartridge is returned to the original position before tilting.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the cam surface of the pressing member is constituted by a pair of V-shaped inclined surfaces, and the supported blade of the spare blade cartridge is supported. A portion of the portion that comes into contact with the cam surface is formed with a pair of V-shaped contact surfaces so as to be able to be engaged between the slanted surfaces. The gist is that α ≦ β when the angle formed by β is β.

Therefore, in the invention of claim 8, in addition to the effect of the invention of claim 7, the angle α between the inclined surfaces of the cam surface of the pressing member is adjusted by the angle of contact of the supported portion of the blade cartridge. When the supported portion (a pair of abutting surfaces) is engaged with the cam surface (a pair of slanted surfaces) by making the angle smaller than or equal to the angle β between the contact surfaces, the cam action is reliably exhibited. Is done.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention, which is embodied in a safety razor used for shaving or the like, will be described below with reference to the drawings.

As shown in FIG. 1, a safety razor 1 as a razor is formed in a substantially T shape by a holder 2 and a blade cartridge 3. The holder 2 is composed of a handle 4 made of synthetic resin and a cover 5.

As shown in FIG. 2A, accommodation recesses 6 and 7 are formed at the tip of the handle 4 and the cover 5, respectively. Then, in a state where the handle 4 and the cover 5 are overlapped with the openings of the accommodation recesses 6 and 7 facing each other, an accommodation room 8 is formed by the two accommodation recesses 6 and 7. The head unit 10 is housed in the head 8. A pair of support pins 9 are disposed below the inner surface of the accommodation recess 6 of the handle 4 so as to be separated from each other in the left and right directions. FIG.
In (a), the left and right sides of the paper are referred to as left and right, respectively, and the upper and lower sides of the paper are referred to as upper and lower, respectively. The head 10 is detachably fitted to each of the support pins 9.

As shown in FIGS. 2A, 2B and 3, the head section 10 includes a head body 21, a pair of support arms 22a and 22b, a pusher 23, a release cam 24, and a release button 25. I have. On one side of the head main body 21, an accommodating portion 31 is recessed. A pair of support pins 32 project from the upper side surface of the housing portion 31 so as to be separated from each other. A pair of support arms 22a and 22b as gripping members are provided for each of the support pins 32 in FIG.
In (a), they are attached so as to be rotatable in a clockwise direction and a counterclockwise direction, respectively. This pair of support arms 22a,
22b is made of an elastic body such as a synthetic resin, for example. The distal ends of the support arms 22a and 22b protrude above the holder 2 from openings formed in the upper end of the storage chamber 8. The front ends of the support arms 22a, 22b are provided with engaging projections 33a, 3
3b is formed to extend.

At the base end of each of the support arms 22a and 22b, inclined portions 34a and 34b are extended inward, and the inclined surfaces 35a and 35b are formed on the outer surfaces thereof. It is formed so that it approaches each other inclined surface 35a, 35b as it goes toward. The outer surface of the left support arm 22a has an inclined surface 35a from its base end toward its distal end.
A first contact surface 36a connected to the first contact surface 36a and a second contact surface 37a connected to the first contact surface 36a are formed. on the other hand,
A first contact surface 36b connected to the inclined surface 35b and a second contact connected to the first contact surface 36b are provided on the outer surface of the right support arm 22b from the base end to the distal end. The surface 37b is formed.

Spring mounting projections 38a, 38b are provided on the inner surfaces of the inclined portions 34a, 34b, and both ends of the compression coil spring 39 are mounted on the spring mounting projections 38a, 38b. The compression coil spring 39 abuts against the inner surfaces of the support arms 22a and 22b facing each other, that is, the peripheral edges of the spring mounting projections 38a and 38b, thereby forming the base ends of the support arms 22a and 22b. Are urged outward.

The compression coil spring 39 is connected to both support arms 22.
In a state in which the base ends of the a and 22b are urged outward, the first contact surfaces 36a and 36b are in contact with the inner side surfaces of the left and right side walls of the housing portion 31 of the head body 21, respectively. The engagement protrusions 33a, 3 of the two support arms 22a, 22b
3b are close to each other. Also, as shown in FIG. 7, each support arm 22 is pressed against the urging force of the compression coil spring 39.
When the engaging projections 33a, 33b of the a, 22b are separated from each other, the second contact surfaces 37a, 37b abut on the inner side surfaces of the left and right side walls of the housing portion 31 of the head main body 21.

A spring receiving projection 41 protrudes from a side surface of the housing portion 31 at a central portion below the support pins 32. The pusher 23 as a pressing member is engaged with the spring receiving projection 41 through a spring receiving hole 42 extending in the vertical direction. The pusher 23 is disposed between the support arms 22a and 22b, and is movable in the vertical direction by being guided by the spring receiving hole 42. A spring mounting projection 4 is provided on the upper inner surface of the spring accommodating hole 42.
3, one end of the compression coil spring 44 is mounted on the spring mounting projection 43, and the other end of the compression coil spring 44 is in contact with the upper surface of the spring receiving projection 41. ing.

The compression coil spring 44 as the urging means is
Both ends are the upper inner surface of the spring receiving hole 42 and the spring receiving protrusion 41
The pusher 23 is urged upward by contacting the upper surface of the pusher 23. That is, the upper end of the pusher 23 is pressed by each of the support arms 22
The pushers 23 are in contact with the lower end surfaces of the engagement protrusions 33a, 33b of the pushers 23a, 22b, thereby restricting upward movement of the pusher 23. Also, as shown in FIG. 7, each support arm 22 is pressed against the urging force of the compression coil spring 39.
When the engaging projections 33a, 33b of the head a, 22b are separated from each other and the second contact surfaces 37a, 37b are brought into contact with the inner side surfaces of the left and right side walls of the housing portion 31 of the head main body 21, the pusher 23 is moved upward. The restrictions on the movement of are released.

As shown in FIG. 2B, a sliding groove 51 is formed in the upper center of the housing portion 31 along the vertical direction, and the pusher 23 is moved vertically along the sliding groove 51. It is slidable. An engagement recess 52 as a cam surface is cut into the upper end of the pusher 23,
The engagement concave portion 52 has a pair of V-shaped inclined surfaces 53, 5, 5.
4.

A sliding groove 55 is formed on the other side of the head main body 21 (on the side opposite to the housing section, and on the left side in FIG. 2B) from the center to the lower part. The sliding contact portion of the release cam 24 is engaged with the sliding groove 55, and the sliding contact portion of the release cam 24 is slidable vertically along the sliding groove 55. A mounting hole 56 is formed at the upper end of the sliding contact portion of the release cam 24. A button mounting portion 48 having a vertically extending through hole 47 is formed on the outer surface of the cover 5. The mounting end of the release button 25 is loosely inserted into the through hole 47 and fixed to the mounting hole 56. The operation unit 25a of the release button 25 is
And protrudes from the outside, and can be pressed vertically from the outside.

The release cam 24 is provided between the sliding contact portion and the extension portion 5.
7 form an L-shaped cross section. That is, the lower end of the sliding contact portion has a direction perpendicular to the longitudinal direction of the release cam 24 (the vertical direction in FIG. 2B) (the right side in the figure).
An extended portion 57 is formed. Further, a pressing portion 58 having a U-shaped front cross section is formed upward from the extension portion 57. As shown in FIG. 2A, arc-shaped pressing surfaces 59 a and 59 b are formed on upper portions on both right and left ends of the pressing portion 58, respectively. Each pressing surface 5
9a and 59b are in contact with the inclined surfaces 35a and 35b of the support arms 22a and 22b, respectively.

In this embodiment, the universal joint means is constituted by the support arm 22a and the support arm 22b.
The pusher 23 and the compression coil spring 44 constitute a restoring unit.

Next, the replacement blade cartridge 3 will be described. The replacement blade cartridge 3 includes a blade base 61. FIG.
As shown in FIG.
Are formed, and between the two recesses 70, the partition 6 as a portion to be clamped is formed.
3 are formed along the width direction of the blade body of the spare blade. At the lower end of the partition 63, a bulging portion 64 is formed which protrudes on both left and right sides. Each of the support arms 22a, 22
engagement surface 65 capable of engaging and disengaging the engagement protrusions 33a, 33b of FIG.
a, 65b (only the engagement surface 65a corresponding to the engagement protrusion 33a of the left support arm 22a is shown in FIG. 4) is formed to be a concave arc surface. The partition 63 and the bulging portion 64 constitute an engaging portion 62 as a supported portion.

Then, as shown in FIGS. 5 and 6, when the first contact surfaces 36a and 36b of the support arms 22a and 22b are in contact with the inner surface of the housing portion 31 of the head body 21, The engaging protrusions 33a and 33b of the support arms 22a and 22b are engaged with the engaging portions 62, respectively. That is, the engagement protrusions 33 of the support arms 22a, 22b
a and 33b sandwich the partition 63, and engage the engaging surfaces 65a and 65b of the bulging portion 64 with the engaging protrusions 33a and 33b.
With the engagement with the blade 3b, the replacement blade cartridge 3 cannot be pulled out. In the engagement protrusions 33a, 33b, the contact surfaces 40a, 40b with the engagement surfaces 65a, 65b are formed as convex arc surfaces along the width direction of the blade body as shown in FIG. 6, and can be freely rotated in the R direction in FIG. Thus, in the present embodiment, the replacement blade cartridge 3 includes the pair of support arms 22a and 22b of the holder 2.
Directly supported by

On the other hand, as shown in FIG.
An engagement protrusion 66 having a triangular cross section having a larger angle than the V-shape of the engagement recess 52 is formed at the lower end of the pusher 23. It is engaged with the engaging recess 52. Here, since the pusher 23 is urged upward by the urging force of the compression coil spring 44, as shown in FIGS. 5 and 6, the upper edge of the engaging recess 52, which is the upper end of the pusher 23, is engaged. It is in contact with the contact surfaces 71 and 72 of the collision portion 66.

In this embodiment, the angle between the inclined surfaces 53 and 54 in the engagement recess 52 is α (not shown),
When the angle formed between the contact surfaces 71 and 72 in the engagement protrusion 66 is β (not shown), α <β.
Due to the difference between the V-shaped angle of the engagement recess 52 and the triangular angle of the engagement protrusion 66, the blade cartridge 3 returns to the restored position (the original position before tilting) by the cam action. or,
Engagement protrusions 33a, 33b of each support arm 22a, 22b
Lower ends (contact surfaces 40a, 40b) of the engagement surfaces 65a, 6
5b.

Since the engaging surfaces 65a and 65b are formed in arc shapes, the replacement blade cartridge 3 is provided with the engaging projections 33a and 3b of the support arms 22a and 22b.
6 is rotatably supported in the clockwise and counterclockwise directions in FIG. 6 with respect to 3b, and can swing.
That is, the replacement blade cartridge 3 is attached to the holder 2 with the blade base 6.
One engaging portion 62 is formed by a pair of support arms 22a and 22b, and the abutting surfaces 40a and 40b of the engaging protrusions 33a and 33b.
Along the direction of the blade width of the blade body of the replacement blade cartridge 3 (the direction of the arrow R shown in FIG. 6). In the present embodiment, the R direction corresponds to the engagement surface 65 of the engagement portion 62.
The rotation direction is a rotation centered on a virtual axis M (see FIG. 6) passing through the centers of curvature of both a and 65b.

When the engagement surfaces 65a and 65b have one radius of curvature, the number of the virtual axis M is one. or,
When the engaging surfaces 65a and 65b are formed continuously with circular arcs having a plurality of radii of curvature, a plurality of the virtual axes M are present correspondingly. In this case, the R direction refers to a direction when rotating around each virtual axis M.

As shown in FIG. 5, when the spare blade cartridge 3 is clamped and supported by the support arms 22a and 22b, the locking surfaces 69a and 69b of the blade base 61 and the respective support arms 2a and 2b.
Partition walls 63 are formed such that gaps having distances L1 and L2 are formed between engaging projections 33a and 33b of 2a and 22b.
Is set. Thus, the blade cartridge 3 can be swung in the left-right direction in FIG. That is, in the replacement blade cartridge 3, the engaging portion 62 of the blade base 61 is moved by the pair of support arms 22 a and 22 b with respect to the holder 2 in the thickness direction of the blade body centering on the center of the replacement blade cartridge 3 (FIG. Arrow P shown in 5
Direction) and is supported so as to be tiltable. In the present embodiment, the distance L1 and the distance L2 are set to the same value.

Further, the replacement blade cartridge 3 is configured such that the engaging portion 62 of the blade base 61 is
The blades a and 22b are supported so as to be tiltable in the blade width direction of the blade body (the direction of arrow Q shown in FIG. 1) around the center of the replacement blade cartridge 3. In the present embodiment, the Q
As for the direction, the virtual axis L passing through the support arms 22a and 22b and passing through the center of the engaging portion 62 (partition wall 63, engaging projection 66) located at the neutral position in FIG. Means the rotation direction. Further, the replacement blade cartridge 3 is configured such that the engaging portion 62 of the blade base 61 is moved to the holder 2 by the pair of support arms 22a and 22b in the P direction.
It is sandwiched and supported so as to be tiltable in a direction in which the Q direction and the R direction are combined.

As shown in FIG. 1, three razor blades 67 are provided on the upper part of the replacement blade cartridge 3 as blades for shaving a beard and the like. Are provided with a plurality of safety guards 68.

Next, the operation when the spare blade cartridge 3 shave a beard or the like using the safety razor 1 mounted on the holder 2 will be described. When the entire top surface of the refill blade cartridge 3 is pressed against the face or the like, the contact surfaces 71, 7 of the engaging projections 66 of the blade base 61 are pressed.
2 pushes the upper end of the pusher 23 against the urging force of the compression coil spring 44, and the pusher 23 moves downward. Then, the engaging surfaces 65a, 65b of the blade base 61 are separated from the contact surfaces 40a, 40b of the engaging protrusions 33a, 33b of the support arms 22a, 22b, respectively. The end surfaces abut against the locking surfaces 69a and 69b in the recess 70 of the blade base 61, respectively. Then, the beard and the like are shaved in that state.

Next, on the upper surface of the replacement blade cartridge 3 due to the unevenness of the face or the like, the right side of the replacement blade cartridge 3 (FIG. 5).
When the replacement blade cartridge 3 is pressed against the face or the like so that a load is applied to the compression coil spring 4, as shown in FIG.
4 pushes the upper right end of the pusher 23 against the urging force, and the pusher 23 moves downward. Then, the blade rest 6
The one engagement surface 65b is separated from the lower end surface (contact surface 40b) of the engagement protrusion 33b of the right support arm 22b. Then, the right side surface of the partition wall 63 presses the engagement protrusion 33b of the right support arm 22b against the urging force of the compression coil spring 39, and the two engagement protrusions 33a and 33b are separated. That is, the replacement blade cartridge 3 is supported by the pair of support arms 22a and 22b with respect to the holder 2 in a state of being inclined to the right (toward the arrow Pa in FIG. 8), and in this state, the beard and the like are removed. Shaved.

On the upper surface of the blade cartridge 3,
When the replaceable blade cartridge 3 is pressed against the face or the like so that a load is applied to the left side (in FIG. 5) of the replaceable blade cartridge 3, as shown in FIG. The surface 71 presses the upper left end of the pusher 23 against the urging force of the compression coil spring 44, and the pusher 23
Moves down. Then, the engagement surface 65a of the blade base 61 is separated from the lower end surface (the contact surface 40a) of the engagement protrusion 33a of the left support arm 22a. Then, the left side surface of the partition wall 63 presses the engagement projection 33a of the left support arm 22a against the urging force of the compression coil spring 39, and the both engagement projections 33
a and 33b are separated from each other. That is, the replacement blade cartridge 3
Is a pair of support arms 22a, 22b
(See arrow Pb in FIG. 9).
Side) is supported in an inclined state, and a beard or the like is shaved in that state.

Next, when the replacement blade cartridge 3 is pressed against the face or the like on the upper surface of the replacement blade cartridge 3 so that a load is applied to the cover 5 side (the opposite side in FIG. 6).
As shown in FIG. 10, the contact surfaces 71, 72 of the engagement protrusion 66 of the blade base 61 press the upper end of the pusher 23 against the urging force of the compression coil spring 44, and the pusher 23 moves downward. I do. At this time, the engagement surfaces 65a, 65
b are formed in an arc shape, respectively, so that the replacement blade cartridge 3 is engaged with the engaging projections 33 of the support arms 22a and 22b.
Rotate clockwise in FIG. 6 with respect to a and 33b (arrow Ra side in FIG. 10). Then, the engagement protrusion 33
a, 33b are engaging surfaces 69a, 69b of the blade base 61.
Contact each other. That is, the replaceable blade cartridge 3 is supported on the holder 2 by a pair of support arms 22a and 22b in a state where the cover 5 side (the opposite side of the blade in FIG. 10) is tilted down. Is shaved.

On the upper surface of the blade cartridge 3,
When the replacement blade cartridge 3 is pressed against the face or the like so that a load is applied to the handle portion 4 side (the blade tip side in FIG. 6), as shown in FIG. , 7
2 pushes the upper end of the pusher 23 against the urging force of the compression coil spring 44, and the pusher 23 moves downward. At this time, since the engagement surfaces 65a and 65b of the blade base 61 are each formed in an arc shape, the replacement blade cartridge 3
Are the engagement projections 33a, 33 of the respective support arms 22a, 22b.
With respect to b, it rotates in the counterclockwise direction in FIG. 6 (the arrow Rb side in FIG. 10). And the replacement blade cartridge 3
Is a pair of support arms 22a, 22b
Thereby, the handle portion 4 side (the blade edge side in FIG. 11) is supported in an inclined state so as to be lowered, and the beard and the like are shaved in this state.

Next, the operation in the case where the resistance on the right side is larger than the left side on the upper surface of the replaceable blade cartridge 3 due to differences in the density and thickness of the whiskers will be described with reference to FIG. In this case, the contact surface 71 of the engaging protrusion 66 of the blade base 61,
72 pushes the upper end of the pusher 23 against the urging force of the compression coil spring 44, and the pusher 23 moves downward. At this time, the left side surface of the partition 63 presses the engagement protrusion 33a of the left support arm 22a,
Presses the engagement protrusion 33b of the right support arm 22b. Then, the engaging projections 33a, 33b of the two support arms 22a, 22b are separated from each other as opposed to the non-tilted state against the urging force of the compression coil spring 39. That is, the replacement blade cartridge 3 is attached to the holder 2 by a pair of support arms 22.
A and 22b are supported in a state where the right side is inclined to the back side of the paper in FIG. 12 and the left side is inclined to the front side of the paper in FIG. 12 (the arrow Qa side in FIG. 1). Can be

On the upper surface of the blade cartridge 3,
The operation when the resistance is greater on the left side than on the right side will be described with reference to FIG. In this case, the contact surfaces 71 and 72 of the engagement protrusion 66 of the blade base 61 press the upper end of the pusher 23 against the urging force of the compression coil spring 44, and the pusher 23 moves downward. At this time, the right side surface of the partition 63 presses the engagement protrusion 33b of the right support arm 22b, and the left side surface of the partition 63 is
Then, the engaging projection 33a is pressed. Then, the engaging projections 33a, 33b of the two support arms 22a, 22b are separated from each other as opposed to the non-tilted state against the urging force of the compression coil spring 39. That is, the replacement blade cartridge 3 is
The pair of support arms 22a and 22b allow the left side of FIG.
3 and the right side is inclined in such a manner as to be on the front side of the paper in FIG. 1 (the arrow Qb side in FIG. 1), and a beard or the like is shaved in this state.

Next, on the upper surface of the replacement blade cartridge 3, the load is applied in a direction in which the thickness direction (P direction) and the width direction (Q direction, R direction) of the blade body are combined. An operation when the is pressed against the face or the like will be described.

In the upper surface of the blade cartridge 3, FIG.
When the replacement blade cartridge 3 is pressed against the face or the like such that a load is applied in the direction in which the right side of the above and the opposite side of the blade in FIG. 6 are combined, the result is as follows. That is, the replacement blade cartridge 3 is attached to the holder 2 by a pair of support arms 22a,
By 2b, the arrow Pa side in FIG. 8 and the arrow Ra side in FIG. 10 are supported in a state where they are inclined in the combined direction, and a beard or the like is shaved in this state.

On the upper surface of the blade cartridge 3,
When the spare blade cartridge 3 is pressed against the face or the like so that a load is applied in a direction in which the left side in FIG. 5 and the opposite side of the blade in FIG. 6 are combined, the result is as follows. That is, the replacement blade cartridge 3 is attached to the holder 2 by a pair of support arms 22.
a, 22b, the arrow Pb side in FIG.
Is supported in a state where it is inclined in the direction in which the arrow Ra side is combined with the arrow, and a beard or the like is shaved in this state.

Further, when the replaceable blade cartridge 3 is pressed against the face or the like so that a load is applied on the upper surface of the replaceable blade cartridge 3 in the direction in which the right side in FIG. 5 and the blade side in FIG. become. That is, the replacement blade cartridge 3 is attached to the holder 2 by a pair of support arms 22.
a and 22b, the arrow Pa side in FIG.
Is supported in a state where it is inclined in the direction in which the arrow Rb side is synthesized, and a beard or the like is shaved in that state.

Further, when the replacement blade cartridge 3 is pressed against the face or the like so that a load is applied on the upper surface of the replacement blade cartridge 3 in a direction in which the left side in FIG. 5 and the blade edge side in FIG. Become like That is, the replacement blade cartridge 3 is attached to the holder 2 by a pair of support arms 2.
2a and 22b, the arrow Pb side in FIG.
1 is supported in a state where the arrow Rb side in FIG. 1 is tilted in a direction in which the arrow Rb is combined, and a beard or the like is shaved in that state.

As described above, the spare blade cartridge 3 is inclined with respect to the holder 2 by the pair of support arms 22a and 22b due to the unevenness of the face and the like, the difference in the density and thickness of the beard, and the like. When the spare blade cartridge 3 is separated from the face or the like, the spare blade cartridge 3 returns to its original position before tilting. That is,
The pusher 23 is urged upward by the urging force of the compression coil spring 44, and the engaging concave portion 52 of the pusher 23 contacts the contact surfaces 71, 72 of the engaging protrusion 66 of the blade base 61, and the spare blade cartridge is acted on by a cam action. 3 returns to the original position before tilting shown in FIG.

Next, a method of attaching and detaching the replacement blade cartridge 3 to and from the holder 2 will be described. When the replacement blade cartridge 3 is mounted on the holder 2, the release button 25 is pressed upward. Then, the pressing portion 5 of the release cam 24
8, the pressing surfaces 59a, 59b
The inclined surfaces 35a and 35b of 2a and 22b are pressed. Then, both support arms 22a and 22b are compressed coil springs 39.
2A, the first contact surface 36 shown in FIG.
In the same figure, the left support arm 22a is counterclockwise and the right support arm 22b is Rotate clockwise. As shown in FIG. 7, the second contact surfaces 37 a and 37 b of the support arms 22 a and 22 b are in contact with the inner surface of the housing 31.

At this time, the engaging projections 33a and 33b of the support arms 22a and 22b are separated from each other,
The restriction of the upward movement of the pusher 23 by 3a, 33b is released. Then, the pusher 23 moves upward by the urging force of the compression coil spring 44, and as shown in FIG. 7, the inner bottom surface of the spring accommodating hole 42 abuts on the lower end surface of the spring receiving projection 41, and the tip end of the pusher 23 moves. Engaging projection 33
a, 33b.

Thereafter, when the operation of the release button 25 is released, each support arm is held in a state in which the engaging projections 33a and 33b are respectively in contact with the left and right side surfaces of the upper end of the pusher 23 by the urging force of the compression coil spring 39. 22a, 2
2b and the pusher 23 are held.

Then, in this state, the replacement blade cartridge 3
The engaging protrusion 66 formed on the blade base 61 of the
And press the spare blade cartridge 3 downward. Then, the pusher 23 is moved downward against the urging force of the compression coil spring 44.

When the distal end of the pusher 23 is moved below the engaging protrusions 33a, 33b of the support arms 22a, 22b, the restraining of the engaging protrusions 33a, 33b by the upper end of the pusher 23 is released. Is done. Then, the two support arms 22a and 22b are moved from the state where the second contact surfaces 37a and 37b shown in FIG. In the figure, the left support arm 22a rotates clockwise and the right support arm 22b rotates counterclockwise in FIG. And, each support arm 22a, 22b
As shown in FIG. 2A, the first contact surfaces 36a, 36b
Is brought into contact with the inner surface of the housing portion 31. At this time, the engagement protrusions 33a and 33b of the support arms 22a and 22b are engaged with the engagement portions 62 of the blade base 61, respectively.

Thereafter, when the downward pressing of the spare blade cartridge 3 is released, the upper end of the pusher 23 is moved by the urging force of the compression coil spring 44 so that the engaging projection 6 of the blade base 61 is engaged.
6, and the lower ends of the engaging projections 33a, 33b of the support arms 22a, 22b abut on the engaging surfaces 65a, 65b of the blade base 61, respectively. As a result, the replacement blade cartridge 3 is supported on the holder 2 so as to be tiltable around the engagement protrusions 33a and 33b.

Next, when replacing the blade cartridge 3, the release button 25 is pressed upward. Then, the respective support arms 22a and 22b move from the state in which the first contact surfaces 36a and 36b shown in FIG. 5 are in contact with the inner side surface of the accommodation portion 31 to the state where the second contact surfaces 37a and 37b shown in FIG. It moves to a state in which it comes into contact with the inner side surface of the storage section 31.

At this time, the engaging projections 33a and 33b of the support arms 22a and 22b are disengaged from the engaging portions 62 of the blade base 61, respectively, and the replacement blade cartridge 3 loses the support for the holder 2. At this time, the pusher 23 moves upward by the urging force of the compression coil spring 44, and the pusher 2
3 have contact surfaces 71, 7 of the engaging projections 66 of the blade base 61.
Press 2. Therefore, when the replacement blade cartridge 3 is replaced, the replacement blade cartridge 3 is easily detached from the holder 2.

Therefore, according to the present embodiment, the following effects can be obtained. (1) In the present embodiment, a pair of support arms 2 of the holder 2
2a and 22b, the replacement blade cartridge 3 is
In contrast, since the blades 3 are supported so as to be tiltable in the thickness direction, the width direction, and the direction in which they are combined, the components (a pair of support arms 22a and 22b) can be shared,
The safety razor 1 can be reduced in size.

Further, since the pair of support arms 22a and 22b are shared, the strictness of each mechanism is compared with the case where the replaceable blade cartridge 3 is supported by the independent mechanisms so as to be tiltable in the above-mentioned directions. There is no need to adjust the position and assemble the mechanism, and almost no adjustment work is required.
Further, since the mechanisms are prevented from interfering with each other, the replacement blade cartridge 3 can be moved smoothly.

(2) In this embodiment, each support arm 22
The partition arm 63 formed on the blade base 61 of the blade cartridge 3 is sandwiched between the engaging projections 33a, 33b of the blades a, 22b, so that the blade cartridge 3 is held against the holder 2 by the support arms 22a, 22b. Can be held in a tilted state.

(3) In this embodiment, the support arm 22
The engaging projections 33a and 33b of the blades a and 22b and the partition 63 of the blade cartridge 3 are displaceable so as to allow the blade of the blade cartridge 3 to tilt in the thickness direction (P direction). By the arms 22a and 22b, the replacement blade cartridge 3 can be gripped with respect to the holder 2 in a state where the replacement blade cartridge 3 is tilted in the thickness direction (P direction) of the blade body around the center of the replacement blade cartridge 3.

(4) In this embodiment, the replacement blade cartridge 3 is tilted in the width direction (Q direction) of the blade body about the center thereof, and the engaging protrusion of the support arms 22a and 22b is formed by the partition 63. When the stiff arms 33a and 33b are pressed in a direction in which they are separated from each other, the stiff arms 22a and 22b are displaced more apart than when they are not tilted, and sandwich and support the partition 63 in this state. That is,
With the support arms 22a and 22b, the blade cartridge 3 can be gripped with respect to the holder 2 in a state of being tilted in the width direction (Q direction) of the blade body with the center of the blade cartridge 3 as a center.

(5) In this embodiment, the support arm 22
a, 22b, the replacement blade cartridge 3 is
The blade body can be supported rotatably in the width direction (R direction) of the blade body along the contact surfaces 40a, 40b of the blades 3a, 33b.

(6) In this embodiment, the engaging portion 62 of the blade cartridge 3 is securely and elastically clamped by the elastic force of the pair of support arms 22a and 22b themselves and the elastic force of the compression coil spring 39. Can be supported.

(7) In this embodiment, the compression coil spring 4
By causing the engaging concave portion 52 of the pusher 23 to abut against the contact surfaces 71 and 72 of the engaging protrusion 66 of the blade base 61 by the urging force of 4, the replacement blade cartridge 3 can easily be easily moved by the cam action before tilting. It can be returned to the position.

(8) In the present embodiment, the angle between the inclined surfaces 53 and 54 in the engagement recess 52 of the pusher 23 is determined by the contact surfaces 71 and 72 of the engagement projection 66 of the blade cartridge 3. It was smaller than the angle made. Therefore, when the engaging projection 66 (the pair of abutting surfaces 71, 72) is engaged with the engaging recess 52 (the pair of inclined surfaces 53, 54), the cam action is reliably exerted, and the blade cartridge is replaced. 3 can be reliably returned to the original position before tilting.

(9) In the present embodiment, each support arm 22
a and 22b are pivoted about the axis of the support pin 32, and the engaging portions 62 of the blade cartridge 3 are sandwiched and supported by the two support arms 22a and 22b. Can reliably pinch and support the engaging portion 62.

(10) In the present embodiment, since the spare blade cartridge 3 is directly supported by the pair of support arms 22a and 22b so as to be tiltable, the safety razor 1 can be further reduced in size.

The above embodiment may be modified as follows. (1) In the above embodiment, the pusher 23 as a pressing member is disposed between the pair of support arms 22a and 22b, and the pusher 23 is used as a compression coil spring 44 as an urging means.
With the urging force described above, the replacement blade cartridge 3 is brought into contact with the engagement portion 62 formed as a supported portion formed in the central portion in the longitudinal direction of the replacement blade cartridge 3. That is, a pair of engaging portions 62 as supported portions are provided at positions spaced apart in the left-right direction from the longitudinal center of the blade cartridge 3, and the pusher 23 is disposed at a position corresponding to the engaging portion 62. The pusher 23 may be brought into contact with the engaging portion 62 by the urging force of the compression coil spring 44.

(2) The concave / convex relationship between the engaging projection 66 of the blade base 61 and the engaging concave portion 52 of the pusher 23 may be reversed. (3) In the above embodiment, the replacement blade cartridge 3 is tiltably supported with respect to the holder 2 by the pair of support arms 22a and 22b as a gripping member. May be supported so as to be tiltable with respect to the holder 2.

(4) In the above embodiment, the pusher 23
Although the engaging protrusions 66 have a triangular cross-sectional shape whose angle is larger than the angle of the V-shape of the engaging concave portion 52, the engaging protrusions 66 may have a semicircular cross-sectional shape.

The angle between the inclined surfaces 53 and 54 in the engagement recess 52 of the pusher 23 and the engagement projection 66
The engagement protrusion 66 may be configured so that the angle between the contact surfaces 71 and 72 is equal.

Next, technical ideas other than the invention described in the claims that can be understood from the above-described embodiment and other examples will be described below together with their effects. (A) Elastic means is provided between the two gripping members, and the two gripping members sandwich and support the supported portion of the blade cartridge by the elastic force of the elastic means. A razor according to any one of claims 1 to 8.

Therefore, according to the invention described in (a), an effect is obtained that the supported portion of the spare blade cartridge can be securely clamped and supported by both gripping members by the elastic force of the elastic means.

In the above embodiment, the compression coil spring 39
Constitutes an elastic means. (B) each of the gripping members is attached to a supporting member, and is rotatably supported around an axis of the supporting member as a center of rotation; Razor according to one paragraph.

Therefore, according to the invention described in (b), each gripping member is rotated about the axis of the support member as the center of rotation, and the supported portion of the blade cartridge is sandwiched between the two gripping members. By attaching and supporting, the effect that the supported portion of the replacement blade cartridge can be reliably sandwiched and supported can be obtained.

In the above embodiment, the support pins 32 constitute a support member. (C) The universal joint means comprises:
Blade thickness direction (P direction), width direction (Q direction, R direction)
The razor according to any one of claims 1 to 8, (a) and (b), wherein the razor is directly supported so as to be tiltable in a direction in which they are combined.

Therefore, according to the invention described in (c), the spare blade cartridge is directly supported by the universal joint means so as to be freely tilted, so that an effect that the size can be further reduced can be obtained.

[0090]

According to the first aspect of the present invention, the supported portion of the replacement blade cartridge is gripped so as to be tiltable in the thickness direction, the width direction of the blade body, and the direction in which the blade body is combined. By using at least a pair of gripping members in common, the size can be reduced.

In addition, since at least one pair of gripping members is shared, strict position adjustment of each mechanism can be performed as compared with a case where the replaceable blade cartridge is supported so as to be tiltable in each of the above directions by independent mechanisms. There is no need to go and assemble the mechanism, and almost no adjustment work is required. Further, since the mechanisms are prevented from interfering with each other, the replacement blade cartridge can be moved smoothly.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, an engaging projection provided on each gripping member forms a supported portion of the blade cartridge. By clamping the clamped portion, the replacement blade cartridge can be gripped by the gripping member while being tilted with respect to the holder.

According to the third aspect of the present invention, in addition to the effect of the second aspect of the present invention, the engaging projection of the gripping member and the portion to be clamped of the replacement blade cartridge are replaced by the replacement blade cartridge. Since the blade is displaceable so as to allow the blade to tilt in the thickness direction, the gripping member tilts the blade cartridge relative to the holder in the thickness direction of the blade about the center of the blade cartridge. It can be grasped in the state where it was done.

According to the fourth aspect of the present invention, in addition to the effects of the second or third aspect of the present invention, the replacement blade cartridge is positioned at the center of the replacement blade cartridge with respect to the holder by the gripping member. The blade can be gripped in a state where it is tilted in the width direction of the blade body around the portion.

According to the fifth aspect of the present invention, in addition to the effects of the second aspect of the present invention, the replacement blade cartridge is engaged with the engaging projection by the holding member. Can be rotatably supported in the width direction of the blade body along the contact surface of the blade body.

According to the sixth aspect of the present invention, in addition to the effects of the first aspect, the supported portion of the blade cartridge is elastically supported by the gripping member. It can be pinched and supported.

According to the seventh aspect of the invention, in addition to the effects of the first aspect, the cam surface of the pressing member is brought into contact with the supported portion of the blade cartridge by the urging force of the urging means. The contact makes it possible to return the spare blade cartridge to its original position before tilting by the cam action.

According to the eighth aspect of the present invention, in addition to the effect of the seventh aspect of the present invention, the angle α between the inclined surfaces of the cam surface of the pressing member can be changed by adjusting the angle α between the inclined surfaces of the replacement blade cartridge. By making the angle smaller than or equal to the angle β between the contact surfaces of the support portion, the cam action is reliably exerted, and the spare blade cartridge can be reliably returned to the original position before tilting.

[Brief description of the drawings]

FIG. 1 is a perspective view of a safety razor of the present embodiment.

FIG. 2A is a front sectional view of a main part of a holder,
(B) is an AA sectional view in (a).

FIG. 3 is a sectional view taken along line BB in FIG. 2 (b).

FIG. 4 is a perspective view of a blade base.

FIG. 5 is a sectional view of a main part showing a positional relationship between the holder and the blade base.

FIG. 6 is a sectional view taken along line CC in FIG. 5;

FIG. 7 is a front sectional view of a main part of a holder for explaining the operation of the safety razor.

FIG. 8 is a sectional view of an essential part for explaining the operation of the safety razor.

FIG. 9 is an essential part cross-sectional view for explaining the operation of the safety razor.

FIG. 10 is an essential part cross-sectional view for explaining the operation of the safety razor.

FIG. 11 is a sectional view of a main part for explaining the operation of the safety razor.

FIG. 12 is an essential part cross-sectional view for explaining the operation of the safety razor.

FIG. 13 is a sectional view of a main part for explaining the operation of the safety razor.

FIG. 14 is a perspective view showing a holder.

FIG. 15 is a sectional side view of a main part of the holder.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Safety razor as a razor, 2 ... Holder, 3 ... Replaceable blade cartridge, 22a ... Support arm, 22b ... Support arm (constitutes universal joint means with the support arm 22a. Also composes a gripping member with the support arm 22a. ), 23 ... pusher (constituting a pressing member),
33a: engagement projection, 33b: engagement projection, 40a: abutting surface, 40b: abutting surface, 44: compression coil spring (constituting urging means. Constructing the restoring means together with pusher 23) Reference numeral 52 denotes an engagement concave portion as a cam surface, 53 denotes an inclined surface, 54 denotes an inclined surface, 62 denotes an engagement portion as a supported portion, 63 denotes a partition wall as a clamped portion, and 67 denotes a blade body. Razor blade, 71 ... contact surface, 72 ... contact surface.

Claims (8)

[Claims] 1. A blade cartridge is supported by a universal joint provided on a holder so as to be tiltable in a thickness direction (P direction), a width direction (Q direction, R direction) of the blade body and a direction in which they are combined. A razor provided with restoring means for returning the spare blade cartridge to its original position before tilting, wherein the universal joint means is provided in such a manner that the supported portion of the spare blade cartridge is sandwiched in the thickness direction of the blade body. A razor comprising at least one pair of gripping members that can be tiltably held in the (P direction), the width direction (Q direction, R direction), and the direction in which they are combined. 2. A supported portion of the replacement blade cartridge includes:
A to-be-clamped portion is formed along the width direction of the blade body, and each of the gripping members includes an engagement protrusion extending toward a direction facing each other, and the gripping member includes the engagement protrusion at both engagement protrusions. The razor according to claim 1, wherein the razor supports the holding portion. 3. The engaging projection of the gripping member and the portion to be clamped of the blade cartridge are arranged in a thickness direction (P direction) of the blade with respect to a holder of the blade cartridge, centering on a central portion of the blade cartridge. The razor according to claim 2, wherein the relative positions are formed so as to be displaceable relative to each other so as to allow the tilting of the razor. 4. The gripping member is configured such that the replacement blade cartridge is tilted in the width direction (Q direction) of the blade body about the center portion thereof, and the engaging projection of each gripping member at the clamped portion. The razor according to claim 2 or 3, wherein the razor is configured to be more displaced when pressed in a direction away from each other than when not tilted. 5. A contact surface of the engaging protrusion with respect to a supported portion is formed in an arc shape along a width direction (R direction) of a blade body, and the gripping member is configured to contact the engaging protrusion with the supporting member. The razor according to any one of claims 2 to 4, wherein the razor is configured to rotatably support the replacement blade cartridge in the width direction (R direction) of the blade body along the contact surface. 6. The razor according to claim 1, wherein said gripping member elastically clamps and supports a supported portion of said blade cartridge. 7. The restoring unit includes a pressing member that abuts on the replacement blade cartridge, and an urging unit that urges the pressing member in a contacting direction with respect to the replacement blade cartridge, wherein the pressing member includes a cam. 2. The razor according to claim 1, further comprising a surface, wherein the cam surface is used to bring the blade cartridge into a restoring position by a cam action when the cam blade contacts the supported portion. 8. The cam surface of the pressing member is constituted by a pair of V-shaped inclined surfaces, and a portion of the cam member of the supported portion of the replacement blade cartridge that contacts the cam surface is the inclined surface. A pair of V-shaped abutting surfaces are formed so as to be able to be engaged therebetween, and an angle between the inclined surfaces is α, and an angle between the abutting surfaces is β.
The razor according to claim 7, wherein α ≦ β.