JP2003210873A - Electric razor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric razor allowing the shaving portion of its blade head part to smoothly follow a user's skin because of the enlarged rocking angle of the blade head part, and capable of easily discharging the whisker and skin debris and other fragment matter between a grip part and the blade head part even in cases where the blade head part is provided with freedom to rock relatively to the grip part. <P>SOLUTION: This electric razor comprises a blade head part for cutting hair and a grip part which is coupled to the underside of the blade head part. The blade head part is equipped with an outer blade 8, an inner blade 5 and a motor 4. A number of openings into which hairs are introduced are formed in the outer blade 8. The inner blade 5 is in a slide contact with the inside of the outer blade 8. The motor 4 drives the inner blade 5 back and forth and to the right and left. The blade head part is coupled to the grip part free to rock so as to rock to the right and left at the center part in the right-and-left width direction for the blade head part and the grip part. A hollow space S is formed on both sides, on the right and left of the coupling site between the blade head part and the grip part. The interval upward and downward of this hollow space S is enlarged outwardly in the left and right direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shaver in which a blade head portion moves with respect to a grip portion so as to be in close contact with the skin for shaving.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
For the purpose of improving the performance of early shaving, a large number of technologies have been proposed in which a shaving portion is provided on the blade head portion and the blade head portion moves relative to the grip body so that the blade head portion can adhere to the skin ( See, for example, Patent Documents 1 and 2.

[0003]

[Patent Document 1] JP-A-6-343776

[Patent Document 2] Japanese Patent Laid-Open No. 2002-521104 In Patent Document 1, the motor and the blade head unit are integrally supported so as to be rotatable left and right with respect to the grip unit. In this example, the arcuate surface of the lower part of the blade head is along the arcuate surface of the upper surface of the grip part, and the gap between them is narrow, and whiskers and dust are easily caught in this gap, and whiskers and dust are generated. There is a problem that it is difficult to clean when it is caught.

Further, in Japanese Patent Application Laid-Open No. 2004-284, in the blade head part mounted on the grip part so as to be movable in a horizontal plane, the detachable buttons of the outer blade block fitted to the blade head part are attached to the lower left and right ends of the blade head part. Although there is a detachable button near the top of the grip, there is a problem that the top of the grip is an obstacle and it is difficult to operate the detachable button. When the head part is moved on a horizontal plane and shaving, the detachable button may be operated by the movement of the head part and the outer cutter block may be erroneously removed when the detachable button is touched.

The present invention has been made in view of the above points, and the swing angle of the blade head portion can be increased so that the shaving portion of the blade head portion can smoothly follow the skin, and the grip portion On the other hand, it is an object of the present invention to provide an electric razor capable of easily sweeping out beard and dust between the grip portion and the blade head portion even if the blade head portion is swingable.

[0006]

The electric razor of the present invention for solving the above-mentioned problems comprises a blade head portion for cutting hair and a grip portion connected below the blade head portion. The part is equipped with an outer blade with a large number of openings through which bristles are introduced, an inner blade that slidably contacts the inner side of the outer blade, and a motor that drives the inner blade, so that the blade head can swing left and right. The blade head part is swingably connected to the grip part at the center part in the left and right width direction of the head part and the grip part, and a space part is formed between the blade head part and the grip part on both left and right sides of this connection part. However, it is characterized in that the space between the upper and lower parts of the space portion is expanded outward in the left and right directions. As described above, the space portion is formed between the blade head portion and the grip portion on both the left and right sides of the connecting portion, and the space between the upper and lower portions of the space portion is expanded outward in the left and right directions. Since the blade head part swings at a large swing angle with respect to the grip part, the shaving part of the blade head part can smoothly follow the skin regardless of the shaving method, and the shaving of a beard You can leave less. Also, by making the swinging of the blade head part relative to the grip part large as described above, it is possible to follow the skin along the skin without changing the gripping direction of the grip part, which puts a strain on the arm when shaving. You can do it easily without Moreover, even if beards and dust enter between the blade head portion and the grip portion, they can be easily swept out and removed due to the space portion that expands outward.

Further, a blade head portion for cutting hair and a grip portion connected below the blade head portion, the blade head portion having an outer blade having a large number of openings through which hair is introduced,
An inner blade that slidably contacts the inner side of the outer blade and a motor that drives the inner blade are provided, and the center portion of the blade head portion and the grip portion in the left-right width direction so that the blade head can swing left and right and move up and down. The blade head is movably connected to the grip with, and a space is formed between the blade head and the grip on both left and right sides of this connection. It is also preferable that the interval is wide. As described above, since the space portion is formed between the blade head portion and the grip portion on the left and right sides of the connecting portion, the blade head portion swings at a large swing angle with respect to the grip portion in the space portion. Therefore, the shaving portion of the blade head portion can be made to follow the skin smoothly regardless of the shaving method, and the amount of unshaved beard can be reduced. Also, by making the swinging of the blade head part relative to the grip part large as described above, it is possible to follow the skin along the skin without changing the gripping direction of the grip part, which puts a strain on the arm when shaving. You can do it easily without In addition, the blade head can be moved up and down, and the vertical spacing of the space is wider than the vertical movement of the blade head, so the blade head moves up and down significantly and the followability to the skin is better. In addition, the shaving can be done smoothly, and the space between the blade head and the grip makes it easy to sweep and remove the shavings and dust, because of the space between the blade head and the grip.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a detailed description will be given based on an example of the embodiment shown in FIGS. 1 to 5 show the overall configuration. As shown in FIG. 1, the electric razor of the present invention comprises a blade head block 1 as a blade head part for shaving hair, a grip block 2 as a grip part to be held by hand, and a trimmer block 3 as a trimmer. A member for supporting the blade head block 1 is arranged near the upper end of the grip block 2.

FIG. 2 shows the structure of the blade head block 1.
Based on. The blade head block 1 is composed of a motor 4, which is a large linear motor, an inner blade 5, an outer blade block 6, and a head case 7 which houses and holds the motor 4. It is transmitted to the inner blade 5 by the driver 24 at the tip thereof, and the inner blade 5 and the outer blade 8 of the outer blade block 6 slide on each other, thereby cutting the beard that has entered the blade hole as the opening of the outer blade 8. It is supposed to do.

The motor 4, which is a linear motor, is inserted into the head case 7 from below, and is fixed with screws 11 from above through a driver waterproof rubber 9 and a rubber pressing plate 10.
The head case lower cover 12 is fitted from below the head case 7, and the head case lower cover 12 is fixed to the head case 7 by screwing the screw 13 from below. As a result, it is configured as one box having a waterproof structure in which the motor 4 is built. The lead wire 14 extending from the lower side of the motor 4 has its tip end coupled to a drive circuit 15 in the grip block 2 for driving the motor 4, and is provided with a hole 16 of the head case lower cover 12. It is fixed to the head case lower cover 12 in a state where it is exposed to the lower side through.

On both end surfaces of the head case 7 in the longitudinal direction,
An attachable / detachable button spring 17 and an attachable / detachable button 18 are arranged, and the engaging protrusion 19 of the attachable / detachable button 18 is sandwiched between the notches 20 of the head case 7 and the head case lower cover 12 so that the attachable / detachable button 18 is rotatably supported. The detachable button spring 17 biases the detachable button 18 outward. The slit drive rod 44, the trimmer drive rod 21, and the inner blade pushing-up spring 22 are fixed to the driver element 24 of the motor 4 protruding from the hole in the center of the upper surface of the head case 7, and the inner blade 5 is urged upward. It is connected to the driver 24 in a closed state.

Three outer blades 8 are mounted on the outer blade block 6 side by side in the front-rear direction. This outer blade 8 is a net blade 8
a, a slit blade 8b, and a net blade 8c.
These outer blades 8 are held by a frame-shaped holding member (not shown) so that they can float independently. The cover body 60 of the outer blade block 6 is composed of a front cover body 60a, a center cover body 60b and a rear cover body 60c, and these are respectively a net blade 8a, a slit blade 8b and a net blade 8c.
Is installed. The front cover body 60a, the center cover body 60b, and the rear cover body 60c are independently connected to each other so as to move up and down and swing left and right.
a, the slit blade 8b, and the net blade 8c can move freely. By engaging the engaging holes (not shown) provided at both ends of the outer cutter block 6 in the left-right direction with the engaging projections 23 on the upper part of the detachable button 18, the outer cutter block 6 is attached to the head case 7. It is detachably held. With the outer blade block 6 mounted on the head case 7, the inner blade 5 is pressed against the net blades 8a and 8c by the force of the inner blade lifting spring 22, and the net blade 8a, the slit blade 8b, and the net blade 8c are attached to the front cover body 60a. , And the central cover body 60b and the rear cover body 60c can be freely floated up and down.

Next, regarding the grip block 2, FIG.
This will be described in detail with reference to FIGS. 4 and 5. The grip case 25 includes a front grip case 25a and a rear grip case 2
It is divided into 5b and front and rear grip cases 25
In the state where a and 25b are combined, the lower side thereof forms a box body sealed in a waterproof manner. A battery 26, a drive circuit 15, a switch button 27, and a base 28 for holding them are fixed in the grip case 25 assembled in this way in a box shape. Front and rear grip cases 25a,
When 25b is assembled, it is fixed by screws 29 from the back surface thereof. A member for supporting the blade head block 1 is arranged above the upper surface of the box-shaped sealed portion of the grip case 25.

Next, the structure of the portion that supports the blade head block 1 will be described in detail. The head support block 30 is formed in a U shape by connecting head support members 31 arranged at the front and rear with a connecting portion 32. A hole 33 is provided at the tip of the head support member 31. On the other hand, the front and rear surfaces of the head case 7 are provided with two protrusions 34, which are four in total in the front-rear direction.
The front and rear protrusions 34 are formed at coaxial positions when viewed from the front. One head support block 30 is arranged on each of the left and right sides, and the holes 33 in the upper portion of the head support member 31 are rotatably fitted to the protrusions 34 of the head case 7.
Are connected in such a manner that the head case 7 is sandwiched from the lower side in the front-rear direction. At least one of the holes 33 of the pair of head support members 31 provided on the left and right is a long hole that is long in the left and right directions, so that even if the head support member 31 is guided by the guide groove 36 as described later. The head case 7 side can swing.

The front and rear surfaces of the front and rear grip cases 25a and 25b are extended upward to project upward.
Is provided, and a guide groove 36 is vertically provided inside the protruding surface 35. The head support block 30 is arranged so as to be sandwiched between the projecting surfaces 35 of the front and rear grip cases 25a and 25b.
The head support block 30 is held movably up and down by fitting the head support member 31 of the above into the guide groove 36, and the float spring 37 is attached to the grip cases 25a and 25b.
By arranging the head support block 30 between the upper surface and the head support block 30, the head support block 30 is spring-biased upward. By mounting the head support block 30 in this manner, the blade head block 1 is coupled to the grip case 25 so as to be rotatable left and right and vertically movable.

The upper end of the float spring 37 is engaged with an engaging projection 59 provided on the lower surface of the blade head block 1. This float spring 37 has a front side float spring 37.
There is a float spring 37b on the rear side and the front side and the rear side are different from each other in the engaging position of the lower end of the float spring 37. The lower ends of the two rear float springs 37b are engaged with the engaging protrusions 38 provided on the upper surface of the rear grip case 25b, and the lower ends of the front float springs 37a are as shown in FIGS. Further, it is engaged with an engaging projection 40 of a float spring receiver 39 which is vertically movable with respect to the front grip case 25a.

An engaging protrusion 41 projecting forward is provided on the front side of the float spring receiver 39, and the tip of the engaging protrusion 41 passes through the projecting surface 35 of the front grip case 25a and the projecting surface of the front grip case 25a. It engages with a guide groove 43 formed on the rear surface of the adjusting dial 42 arranged on the front surface of 35. A dial stopper 45 is arranged on the rear surface of the protruding surface 35 having the adjustment dial 42 arranged on the front surface, and a screw 46 is screwed from the dial stopper 45 to the adjustment dial 42 via the protruding surface 35 to rotate the adjustment dial 42. It is held freely. The guide groove 4 is provided on the float spring receiver 39.
7 is provided, the guide groove 47 is slidably fitted in the guide rib 48 provided in the front grip case 25a, and movement of the float spring receiver 39 other than the vertical movement is restricted so that the float spring receiver 39 can be moved vertically. There is. With this configuration, the rotation of the adjustment dial 42 can be controlled by the float spring bearing 3
The vertical force of the float spring 37a can be adjusted so that the spring force of the float spring 37a can be adjusted.

The lead wire 14 attached to the motor 4 is penetrated through the rubber tube 50, and then penetrated through the lead wire tube hole 51 provided on the upper surface of the rear grip case 25b. It is coupled to the drive circuit 15. The upper end of the rubber tube 50 is locked by press-fitting into a downwardly projecting cylindrical hole provided in the head case lower cover 12, while the lower end of the rubber tube 50 is a lead wire cylindrical hole 51 on the upper surface of the rear grip case 25b. Is locked to. By this combination, from the battery 26 which is the power source,
It is connected to the motor 4 via the drive circuit 15 and the lead wire 14 so that the motor 4 can be driven. Further, since the lead wire 14 is wired between the lower surface of the head case 7 and the upper surface of the grip case 25 as described above, and is connected to each case near the center in the left-right direction, the movement of the electric wire is minimized. Since the bending fatigue of the electric wire is reduced and the reliability deterioration such as disconnection can be prevented, and an unnecessary resistance force is not given to the movement of the blade head block 1,
The followability of the shaving portion (the portion of the outer blade 8) of the blade head block 1 can be improved.

The front face of the head case 7 projects forward,
Moreover, a substantially inverted L-shaped projection piece 52 having a tip protruding downward is formed. The projection piece 52 is used as the head locking member 53.
In a state in which the head locking member 53 is sandwiched in the front and back by a portion which is penetrated through the engaging hole 54 of the head projection 7 and the front surface of the head case 7 and which protrudes downward.
Is fitted from below into a guide groove 55 provided in the upper part of the upwardly projecting surface 35 of the front grip case 25a, and the head locking member 53 is held so as to be vertically movable. Protrusions 5 protruding left and right of the head locking member 53
6 are retained in the front-rear direction by engaging with the edge portions 55a on both sides of the guide groove 55.

The trimmer block 3 is hooked from the rear side of the rear grip case 25b by a mounting hook 57, and by sliding the trimmer block 3 upward, the driver 24 of the blade head block 1 moves the trimmer drive rod 21. And the trimmer blade is driven.

FIG. 4, FIG. 6, FIG. 7 and FIG. 8 show operation diagrams of the blade head block 1 from the front. When an external force is applied to the outer blade 8 by being pressed against the skin, the entire blade head block 1 can move according to the magnitude and direction of the force. That is, the external force applied to the outer blade 8 is transmitted to the head case 7, and the force pushes down the head supporting member 31 against the spring force.

At this time, the center of rotation of the blade head block 1 is the protrusion 34 projecting in the front-back direction from the head case 7. When this position is above the blade head block 1, the center of gravity of the blade head block 1 is set. Since the height of the blade head block 1 becomes higher, the center of gravity moves due to rotation in the upward direction, and the followability of the blade head block 1 becomes poor. The center of gravity of the blade head block 1 is substantially determined by the position of the built-in motor 4, but since the center of rotation (the center of swing) is located below the center of gravity of the blade head block 1, the entire blade head portion is located. Since the mass of works as a force to help swing, it works as a force to help push the skin,
The followability of the blade head block 1 can be improved. Since the head support member 31 is guided in the front and rear and left and right directions by the guide grooves 36 of the front and rear grip cases 25a and 25b, there is no rattling of the entire blade head block 1, and the blade head block 1 can move smoothly. Becomes

Further, as shown in FIG. 8, the blade head block 1 can also be lowered straight downward.
As a result, the movement is a combination of vertical movement and horizontal rotation, not only following the movement of the skin but also absorbing the impact when the shaving portion of the blade head block 1 gets over the unevenness of the skin, greatly improving the skin contact. be able to.

Further, since the blade head block 1 is all located above the upper surface of the grip case 25, there is no place where the blade head block 1 interferes with the rotation of the blade head block 1, so that a very large follow-up angle can be obtained. Also blade head block 1
A space S is formed on both sides in the left-right direction between the grip case 25 and the grip case 25, and the space S is configured to expand toward the end in the left-right direction.
The width of the blade head block 1 in the left-right direction is larger than the width of the upper end of the grip block 2 in the left-right direction,
Also with these configurations, there is no interference with the grip case 25 when the blade head block 1 rotates, and a large following angle can be obtained. The blade head block 1 moves up and down, but the vertical interval of the space S is larger than the vertical movement amount of the blade head block 1.

Further, since two or more head supporting members 31 are provided for one surface (front surface or rear surface), the inclination of the blade head block 1 is always kept neutral when no external force is applied to the blade head block 1. This makes it possible to stabilize the contact angle with the skin. Further, since the pitch of the left and right head support members 31 is less than half the total width of the head case 7, it is possible to reduce the force exerted on the rotational force by the spring force that biases the blade head block 1 upward, and to the skin. The followability can be improved.

Further, since the blade head block 1 is rotated around the front-rear axis and the protruding surface 35 is formed so as to overlap the front and rear surfaces of the grip case 25, the grip block 2 is provided even when the height of the blade head block 1 is high. Smooth movement of the blade head block 1 can be realized without hitting the fingers of the hand holding the. Further, since the support portion for supporting the head case 7 is formed on the inner surface of the protruding surface 35, the head support member 31 can be guided near the rotation support portion of the blade head block 1, and the blade head block with respect to the grip block 2. It is possible to suppress the rattling of 1. Further, since the head support members 31 are provided on both front and rear sides, the blade head block 1 can be supported more reliably. Further, since the front and rear head support members 31 are connected by the connecting portion 32 to be integrated, the blade head block 1 can be supported without back and forth rattling. In addition to the head support member 31, the protruding surface 35 and the head case 7 are provided.
Since the head locking member 53 is provided as a guide member for guiding the front-back direction, the front-back positioning can be reliably performed with respect to the protruding surface 35 on one side, and rattling in the front-back direction can be reduced. You can

Further, the head case 7 and the grip case 25
By adopting a waterproof structure and surrounding the lead wire 14 with a rubber tube 50 having elasticity as wiring for connecting the respective cases, a simple and highly reliable waterproof structure can be obtained. Also, a head support member 31,
By arranging the spring member for urging the blade head block 1 upwards outside the head case 7 and the grip case 25, the movable part can be outside the part of the waterproof structure, so that the reliability of waterproofing is improved. Can be improved.

Next, an example of the embodiment shown in FIGS. 10 to 16 will be described.

As shown in FIGS. 10 to 12, the electric shaver has a blade head block 1 as a blade head for shaving.
And a grip block 2 as a grip part to be gripped by hand.
And a trimmer block 3, and a member for supporting the blade head block 1 is arranged near the upper end in the grip block 2. A float mechanism block is formed between the grip block 2 and the blade head block 1.

First, the structure of the blade head block 1 will be described in detail with reference to FIGS. The blade head block 1 is largely composed of a motor 4 which is a linear motor, an inner blade 5, an outer blade block 6, a head case 7 which houses and holds the motor 4, and a head case upper cover 62. Vibration in the left-right direction is transmitted to the inner blade 5 by the driver 24 at the tip thereof, and the inner blade 5 and the outer blade 8 of the outer blade block 6 slide with each other, whereby the outer blade 8
The beard that cuts into the blade hole is cut. The motor 4 is inserted into the head case 7 from the upper side in a state where it is integrally connected to the motor base 61 at the lower portion, and is fixed by a fixing screw 63 from the lower side.

A head case upper cover 62, a driver waterproof rubber 9, and a rubber pressing plate 10 are arranged in this order on the head case 7, and a fixing screw is fixed to the head case 7 from the rubber pressing plate 10 via the head case upper cover 62. 64 is screwed and fixed. By fixing with the fixing screw 64 in this way, it is configured as one box having a waterproof structure in which the motor 4 is incorporated.

The lead wire 14 as an electric wire extending from the lower side of the motor 4 has its tip end coupled to a drive circuit in the grip block 2 for driving the motor 4, and is connected to the drive circuit of the head case 7. It is exposed on the lower side through the hole provided at the bottom. A detachable button 18 is attached to both longitudinal end faces of the head case 7 while being biased outward by a detachable button spring 17 included in the detachable button 18.

A slit drive rod 44 and a trimmer drive rod 21 are attached to the driver element 24 of the motor 4 projecting from a hole at the center of the upper surface of the head case upper cover 62 from the front and rear, and inside the driver element 24. The blade push-up spring 22 is held by a spring stopper 65, and the inner blade 5 is coupled thereto so that the inner blade 5 is biased upward.

The outer blade block 6 is provided with three outer blades 8 as a net blade 8a, a slit blade 8b, and a net blade 8c in that order in the front and rear so that they can be independently floated. It is held by a frame-shaped holding member in the outer blade block 6. Engagement holes provided at both ends in the left-right direction of the holding member in the outer blade block 6, and the detachable button 18
By engaging the engaging projections 23 of the outer blade block 6
Are held detachably with respect to the head case 7.

Next, the grip block 2 is shown in FIG.
0, FIG. 12, and FIG. The grip block 2 is divided into front and rear grip cases 25a and 25b.
It is composed mainly of the front and rear grip cases 25.
The a and 25b are joined by sandwiching a rubber ring member 66 therebetween to form a waterproof box inside, and front and rear walls have projecting surfaces 35 extending upward. A battery 26, a circuit, and a base 28 for holding them are arranged in a waterproof case formed by the grip cases 25a and 25b. The front and rear grip cases 25a and 25b are attached to the grip case 2 from the back of the rear grip case 25b via the grip case 25b.
It is fixed by screwing a screw 29 to 5a.

A front panel 69 is hooked on the front surface of the front grip case 25a with the switch portion 68 sandwiched therebetween. A front elastic plate 70 made of an elastomer is fitted and attached to the upper part of the front surface of the front panel 69.
A rear panel 7 is provided on the rear side of the rear grip case 25b.
1 is connected from the back side by a fixing screw 67, and the trimmer block 3 is hook-connected. The trimmer block 3 is attached so as to be slidable in the vertical direction, and at the upper position of the slide, the trimmer driver of the trimmer block 3 is connected to the trimmer drive rod 21 provided on the blade head block 1 and the trimmer block 3 is attached.
The trimmer blade is designed to be driven. The head of the lower screw 29 is hidden by the screw hole lid 92.

The head support block 30 consisting of the head support member 31 and the connecting portion 32 is formed in a U shape.
A hole 33 is provided at the upper tip of the head support member 31. On the other hand, the front and rear surfaces of the head case 7 are provided with two protrusions 34 in total, that is, four protrusions 34 in the front-rear direction. The front and rear protrusions 34 are formed at positions coaxial with each other when viewed from the front. The head support blocks 30 are arranged one by one on the left and right, and the holes 33 at the top of the head support blocks 30 are rotatably fitted to the protrusions 34 of the head case 7, and the head case 7 is moved from the lower side to the front and back. It is attached so as to be sandwiched. The head supporting member 31 is fitted in the guide grooves 36 formed in the projecting surfaces 35 of the front and rear grip cases 25a and 25b, so that the head case 7 is vertically movable while being sandwiched by the projecting surfaces 35. There is. With this configuration, the blade head block 1 is provided with respect to the grip cases 25a and 25b.
As shown in FIGS. 15 (b) and 15 (c), it is coupled so as to be rotatable left and right and vertically movable.

A stopper member 7 is provided on the front surface of the head case 7.
3 is provided, and a projection piece 73a provided on the upper end of the front side of the rattling stop member 73 and protruding left and right sandwiches the wall of the grip case 25a through the opening 74 of the grip case 25, and the head case 7 Is held so that it does not rattle in the front-back direction. In addition, a projection 73c extending downward is formed on the lower rear surface of the ratchet member 73, and the projection 73c is provided along the inner surface of the rear grip case 25b, so that the head case 7 moves forward and backward. It is designed not to rattle.

Next, the spring block 75 for urging the head support block 30 will be described. Spring block 75
Two are provided on the left and right corresponding to each head support block 75. One spring block 75 has a coil spring 7
6 and the leaf spring 77 are held by upper and lower spring bearing members 78 and 79. The coil spring 76 is held by projections 80 provided on the upper and lower spring bearing members 78 and 79. The leaf spring 77 is formed in a substantially U shape, and the hole 81 of one piece thereof is fixed by welding the projection of the upper spring bearing member 78. The lower spring receiving member 79 has two protruding pieces 82 at positions sandwiching the coil spring 76, and a hook 83 at the tip thereof engages with a hole 84 provided in the upper spring receiving member 78. The spring block 75 is assembled by. This spring block 75 pushes the head support block 30 upward so that the grip case 2
It is arranged on the upper part of 5a, 25b.

The function of providing two head support blocks 30 on the left and right sides is as follows. When the head surface of the blade head block 1 is pressed at an angle different from the skin surface, one of both ends of the head surface hits the skin,
A force for lowering the blade head block 1 is generated. At this time, since the fulcrum of rotation of the blade head block 1 is the shaft (projection 34) fitted to the head support member 31 on the side opposite to the skin contact side, the distance from the force point becomes large, The force for rotating the blade head block 1 is increased. Therefore, since the blade head block 1 is rotated with a light force until it comes into contact with the skin, the skin and the outer blade 8 are brought into close contact with each other, so that an electric razor with less shaving left can be provided.

A fan-shaped flat surface 85 and a hole 86 are formed on one side surface of the rear grip case 25b, and one end of a lever shaft 86 arranged in the grip case 25b is inserted into the hole 86. A lever operator 87 arranged outside the hole 86 is attached by being engaged with one end of the lever shaft 86. At this time, with the structure in which the lever shaft 86 and the lever operator 87 are engaged as separate members, the insertion of the lever shaft 86 can be simplified, and the lever operator 87 can be attached to the rear grip case 25b. It can be arranged on the plane portion 85. The lever shaft 86 is provided with a protruding portion 88, and the lever shaft 86 is rotated by operating the lever operator 87, and the height of the tip of the protruding portion 88 is changed, so that the spring receiving member 7 is provided.
It acts on the lower surface of 8 and the receiving surface of the leaf spring 77, and switches the float amount and float force, which are the supporting characteristics of the blade head block 1.

A protrusion 89 having a spherical shape is formed at the tip near the center of the lever shaft 86 in the longitudinal direction.
By engaging the click member 90, the lever shaft 86
It is possible to position the rotation position of. When the front grip case 25a and the rear grip case 25b are coupled, the lever shaft 86 is rotatably fixed by being sandwiched between the click member 90 and the lower spring receiving member 79 and the rear grip case 25b.

The lead wire 14 extending downward from the motor 4 through the hole on the bottom surface of the head case 7 is inserted into the rubber tube 50 for maintaining the waterproof property and then gripped through the hole provided on the upper surface of the grip case 25a. Cases 25a, 2
It is connected to the circuit in 5b.

Even with the electric razor in the example shown in FIGS. 10 to 16, the blade head block 1 and the grip case 25 are used.
A space portion S is formed on both sides in the left-right direction between and, and the space portion S is configured to widen toward the end portion in the left-right direction. The blade head block 1 moves up and down, but the vertical interval of the space S is larger than the vertical movement amount of the blade head block 1.

Next, an example of the embodiment shown in FIGS. 17 to 20 will be described. This example is also basically the same as the above example, and only different points will be mainly described. In the above example, the blade head block 1, which is the blade head portion, is rotated left and right to swing and move up and down, but in this example, the blade head block 1 does not move up and down and swings left and right. It is supposed to do. A boss 91 is projectingly provided in an intermediate portion between the projecting portions 34 on the front surface of the head case 7, and the boss 9 is provided in a shaft hole 92 provided on the opening 74 of the projecting surface 35 of the front grip case 25a.
1 is rotatably fitted, and a fixing screw 93 is attached to the boss 91.
Is fixed by screwing. Further, in the above example, the protrusion 34 is rotatably connected to the hole 33 at the upper end of the head support member 31, but in the present example, the upper end surface of the head support member 31 is connected to the protrusion 3.
It just abuts No. 4.

In this case, the blade head block 1 swings around the boss 91 with respect to the grip block 2 as shown in FIG. Also in the case of this example, space portions S are formed on both sides in the left-right direction between the blade head block 1 and the grip block 2, and the space portions S widen toward the end portions in the left-right direction. It is configured.

Next, the operation of forming the space portions S on both sides between the blade head block 1 and the grip block 2 of the electric shaver of the examples shown in FIGS. 1 to 20 will be further described. As described above, the space S is provided on both sides between the blade head block 1 and the grip block 2, and the space S is tapered so that the space S expands in the left-right direction. Head block 1
When swinging, the swing angle of the blade head block 1 can be increased.

In the electric razor, since the blade head block 1 swings with respect to the grip block 2, whiskers and dust may enter between them, but even if the whiskers and dust enter, a space portion on the left and right is generated. Enter S. Even if beards and dust enter the space S, it is easy to insert the brush 94a of the cleaning tool 94 into the space S and sweep out the beards and dust with the brush 94a as shown in FIGS. Can be cleaned.

Further, the head hase 7 of the blade head block 1
Attaching and detaching buttons 1 for attaching and detaching the outer blade block 6 on both sides of the
8 is attached, and the outer blade block 6 can be attached and detached by operating the attachment / detachment button 18.
As shown in FIGS. 22 to 24, the attachment / detachment button 18 can rotate about the lower portion of the attachment / detachment button 18 as a rotation center (rotation axis). A detachable button spring 17 is interposed between the detachable button 18 and the head case 7 so as to be separated toward one another. An engagement protrusion 23 is provided on the upper end of the attachment / detachment button 18, and the engagement protrusion 23 is engaged with or disengaged from the engagement hole of the outer blade block 1 by pressing the operation portion 18a of the attachment / detachment button 18. It is supposed to do. FIG. 23
In the state shown in Fig. 24, the operation portion 18a is not pushed, and the engagement protrusion 23 engages with the engagement hole.
8a is a state in which the engagement protrusion 23 is pulled inward to disengage the engagement.

By the way, when the outer cutter block 6 is removed, as shown in FIG. 25, the operation portion 18a of the attachment / detachment buttons 18 on both sides is held by the thumb and forefinger while the grip block 2 is grasped by the palm, middle finger, ring finger and little finger. Although it is pushed as indicated by arrow A, since there are spaces S below both sides of the blade head block 1, it is easy to put a finger on the operating portion 18a, and the outer blade block 6
Easy to remove.

Further, although the present invention has a structure in which the blade head block 1 swings with respect to the grip block 2, when the blade head block 1 is supported and used so that the blade head block 1 does not swing, FIG. Palm and middle finger, as shown
While holding the grip block 2 with the ring finger and little finger, the blade head block 1 is supported by the thumb and forefinger so as not to swing. At this time, since there is a space S on both sides, a thumb and an index finger can be put in this space S, and when the blade head block 1 is held so as not to swing, the attachment / detachment button 18 is touched even if a finger touches the attachment / detachment button 18. Operation part 1 just by hitting near the rotation axis of
There is no risk of the outer blade block 6 accidentally coming off by accidentally pushing the operating portion 18a without hitting the 8a.

In the example of the above-described embodiment, the inner blade 5 is slidably contacted with the outer blade 8 so that the inner blade 5 slides left and right, and the motor 4 reciprocates the inner blade 5 left and right. Although the example in which the blade of the formula is provided in the blade head block 1 as the blade head portion has been described, the invention can be similarly implemented in the case of providing the blade head block 1 with the rotary blade in which the inner blade 5 is rotationally driven.

[0053]

According to the first aspect of the present invention, the blade head portion swings to the grip portion at the center portion in the width direction of the blade head portion and the grip portion so that the blade head portion can swing to the left and right. Since the space is formed between the blade head part and the grip part on both the left and right sides of this connecting part, and the space between the upper and lower parts of this space part expands to the left and right outwards, Since the blade head swings at a large swing angle with respect to the grip in the space, the shaving portion of the blade head can smoothly follow the skin regardless of the shaving method. It is possible to reduce the amount of shaving left unremoved, and by increasing the swinging of the blade head part with respect to the grip part as described above, without changing the gripping direction of the grip part,
It can be made to follow along the skin, making it easier to do without burdening the arm when shaving, and even if beard or dust enters between the blade head part and the grip part, It is easy to sweep out and remove due to the space that expands toward you.

According to the second aspect of the present invention, the blade head portion is gripped at the center portion in the width direction of the blade head portion and the grip portion so that the blade head portion can swing left and right and move up and down. And a space between the blade head and the grip on both the left and right sides of the connection so that the vertical spacing of the space is wider than the vertical movement of the blade head. As a result, the blade head swings at a large swing angle with respect to the grip in the space, so that the shaving portion of the blade head can smoothly follow the skin no matter what shaving method. It is possible to reduce the amount of beard left unshaved, and by increasing the swinging of the blade head part with respect to the grip part as described above, you can follow the skin without changing the gripping direction of the grip part. You can let your arm shave It is easy to carry without having to carry it, and by making the blade head movable up and down and making the vertical interval of the space part wider than the vertical movement amount of the blade head part, the blade head part It can be moved up and down a lot to improve the followability to the skin, and you can shave smoothly.Because there is a space with a wide space up and down, beard scraps between the blade head part and the grip part. Even if dust enters, it can be easily swept out and removed due to the space that expands outward.

The invention according to claim 4 of the present invention is the method according to any one of claims 1 to 3, wherein an outer cutter block having an outer cutter is fitted onto the blade head portion and the outer cutter block is detachably operated. Since the buttons are provided on the lower part of both sides of the blade head part, the detachable button will be located on the side surface above the space,
The presence of the space makes it easier to put a finger on the attachment / detachment button, and the operation for detaching the outer blade block is easy.

According to a fifth aspect of the present invention, in the fourth aspect, the operating portion for operating the detachable button is located on the outer blade side, and the rotation center of the detachable button is located on the space portion side.
When putting your fingers on the lower parts of both sides of the blade head to support it so that the blade head does not swing, you can insert your fingers into the space to support the blade head. Even if a finger hits it, it does not hit the operation portion, and there is no risk that the outer blade block will accidentally fall off.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view of an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the above blade head block.

FIG. 3 is a front view of the above.

FIG. 4 is a sectional view of the same as seen from the front.

5 is a sectional view in which the blade head block of FIG. 4 is also broken.

FIG. 6 is a front view for explaining an operating state of the above.

FIG. 7 is a front view illustrating an operation state of the above.

FIG. 8 is a front view for explaining an operating state of the above.

FIG. 9 is an exploded perspective view of a part of the above grip block.

FIG. 10 is a partially exploded perspective view showing the whole of another example of the above.

FIG. 11 is a front view of the above.

FIG. 12 is an exploded perspective view of the entire same as above.

FIG. 13 is an exploded perspective view seen from a direction different from FIG.

FIG. 14 is an exploded perspective view of the above blade head block.

15A is a partially omitted sectional view of FIG. 11, FIG. 15B is a partially omitted sectional view of the blade head block tilted from the state of FIG. 11A, and FIG. 15C is a state of FIG. It is a partially omitted cross-sectional view of a state in which the blade head block has descended from.

FIG. 16 is an exploded perspective view of the above spring block.

FIG. 17 shows still another example of the above, (a) is a partially cutaway front view, (b) is a sectional view taken along line XX of (a), (c) is a sectional view seen from the front, FIG. 7D is an enlarged cross-sectional view of the Y portion of FIG.

FIG. 18 shows a swinging state of the above, (a) is a front view,
(B) is a partially omitted front view, and (c) is a sectional view seen from the front.

FIG. 19 is an exploded perspective view of the above.

20 is a perspective view of the grip case before FIG. 18 seen from another direction. FIG.

21A and 21B are front views illustrating a state in which whiskers and dust are being swept out.

FIG. 22 is a perspective view showing a state in which a detachable button is attached to the head case of the above.

23 (a) is a front view, FIG. 23 (b) is a cross-sectional view as seen from the front, and FIG. 23 (c) is an enlarged cross-sectional view of a main part in a state in which the engagement protrusions of the detachable button are engaged. Is.

FIG. 24 (a) is a front view, FIG. 24 (b) is a cross-sectional view as seen from the front, and FIG. 24 (c) is an enlarged cross-sectional view of a main part in a state where the engagement protrusions of the detachable button are disengaged. Is.

FIG. 25 is a front view showing a state where an operation of removing the outer blade block of the same is performed.

FIG. 26 is a front view showing a state in which the above blade head block is supported so as not to swing.

[Explanation of symbols]

S space section 1-blade head block 2 grip blocks 4 motor 5 inner blade 6 Outer blade block 7 head case 8 outer blade

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryo Motohashi             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F-term (reference) 3C056 BB00

Claims (5)

[Claims] 1. An outer blade having a blade head portion for cutting hair and a grip portion connected to the lower portion of the blade head portion, the blade head portion having an outer blade having a large number of openings through which hair is introduced, and an outer blade. Equipped with an inner blade that slidably contacts the inside of the blade and a motor that drives the inner blade, so that the blade head can swing to the left and right, the blade head is located at the center in the left and right width direction of the blade head and grip. It is swingably connected to the grip part, and a space is formed between the blade head part and the grip part on both the left and right sides of this connection part. An electric razor characterized by being expanded. 2. A blade head portion for cutting hair, and a grip portion connected below the blade head portion, the blade head portion having an outer blade having a large number of openings through which hair is introduced, and an outer blade. Equipped with an inner blade that slidably contacts the inside of the blade and a motor that drives the inner blade, so that the blade head part and the grip part are centered in the left and right width directions so that the blade head can swing left and right and move up and down. The blade head part is movably connected to the grip part, and a space is formed between the blade head part and the grip part on both left and right sides of this connection part. An electric razor characterized by being made wider. 3. A reciprocating type in which the inner blade is slidably contacted with the outer blade so that the inner blade slides left and right, and the inner blade is reciprocally driven left and right by a motor. Alternatively, the electric shaver according to claim 2. 4. An outer cutter block having an outer cutter is fitted on the blade head portion, and attachment / detachment buttons for operating attachment / detachment of the outer blade block are provided at lower portions on both sides of the blade head portion. An electric razor according to claim 3. 5. The electric shaver according to claim 4, wherein the operating portion for operating the attach / detach button is located on the outer blade side, and the rotation center of the attach / detach button is located on the space portion side.