JP3531251B2 - Reciprocating electric razor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating electric shaver, and more particularly to a reciprocating electric shaver in which a plurality of blades are each floatable.

[0002]

2. Description of the Related Art Some reciprocating electric razors have a plurality of blades. That is, there are a plurality of net-shaped blades arranged side by side, a net-shaped blade and a trimmer blade or a slit blade arranged side by side. In the case where a plurality of blades are provided in this way, each blade can usually be reciprocally driven by one driver, and different types of blades such as a net-shaped blade and a trimmer blade are arranged side by side. In the installed one, a driver for reciprocating the net-shaped blade and a sub-driver for reciprocating the trimmer blade are provided so that the sub-driver receives power from the driver to drive the trimmer blade. Many are

On the other hand, in a recent electric shaver, each blade is vertically movable and is spring-biased upward,
It is required to soften the skin contact by making the blade sink against the spring when pressed against the skin, that is, by allowing it to float freely. Also, in order to float freely, it is necessary to allow both ends of the blade in the reciprocating direction to float independently.
It is preferable because it enhances the adhesion of the blade to the skin.

[0004]

If each blade is allowed to float independently at both ends in the reciprocating direction, a problem will occur in terms of power transmission from the driving element to the auxiliary driving element. That is, in the conventional art, when the blade driven by the driver and the blade driven by the auxiliary driver have different inclinations in the reciprocating direction, the misalignment of the direction corresponding to this occurs Between the drive element and the drive element, the power transmission section from the drive element to the auxiliary drive element is twisted, and the drive load becomes large, which causes a large float amount. I couldn't. This is a particular problem when the movable blade has to reciprocate in a circular arc because the blade is curved in the reciprocating direction.

The present invention has been made in view of the above points, and an object of the present invention is to increase the amount of float and to improve the followability to the skin, and at the same time, to improve the power from the driving element to the auxiliary driving element. An object of the present invention is to provide a reciprocating electric razor capable of increasing transmission efficiency.

[0006]

DISCLOSURE OF THE INVENTION The present invention, however, has the first aspect.
And a second blade, and a sub-driver for reciprocating the second blade is detachably connected to a driver for reciprocating the first blade, and the sub-driver from the driver through the sub-driver. In the reciprocating electric shaver in which the driving force is transmitted to the second blade, both ends of the second blade in the reciprocating direction are supported so that they can be independently floated, and one end is connected to the movable blade of the second blade. The sub-driving element which is connected to the non-reciprocating portion of the second blade through the flexible connecting member and is free to float integrally with the second blade is provided in the float direction of the second blade. The float direction relative to the non-reciprocating part is slidable and is connected to the driver in a state of being restrained in the driving direction of the second blade, and is connected to the non-reciprocating part of the second blade. Is equipped with an engaging portion that limits the movement of the sub-driver .
The upper edge of the secondary blade with respect to the non-reciprocating part
The engagement part is within a predetermined range with respect to the non-reciprocating part of the second blade.
The feature is that it is a hook coupling part that can be freely moved .

The second blade may be curved in the reciprocating direction, and the first blade may be floatable. The flexible connecting member is preferably formed as a bent one. Also,
It is also preferable that the sub-driver is connected to the non-reciprocating portion of the second blade by a pair of flexible connecting members located on both sides in the reciprocating direction.

[0008]

According to the present invention, due to the presence of the flexible connecting member and the connection state of the auxiliary driver to the driver element, the driver element and the auxiliary driver element can be connected regardless of the float state of the second blade. It can be kept free from twisting. Even if the second blade is curved in the reciprocating direction, the auxiliary blade can drive the second blade without any problem. Even if the first blade is also floatable, it does not cause a problem. Moreover, due to the existence of the engaging portion that restricts the movement of the sub drive element in the float direction, the connection between the sub drive element and the movable blade of the second blade will not be disconnected during the float. In addition, secondary drive
The engaging portion for the non-reciprocating portion of the second blade of the child
However, the movement of the second blade within the specified range with respect to the non-reciprocating part
Free drive and second blade due to free hook connection
Can be easily engaged with the non-reciprocating part.

If the flexible connecting member is formed in a bent shape, the driving load can be further reduced.
Further, if the pair of flexible connecting members located on both sides of the auxiliary driver in the reciprocating direction are connected to the non-reciprocating part of the second blade, the reciprocating motion of the auxiliary driver can be kept excellent. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. In this electric shaver, an outer blade 1 and a plurality of inner blades 21 formed as a net blade having a large number of blade holes are used. The main blade M including the inner blade 2 formed by being planted in the base 20 is provided as a first blade, and the fixed blade 3 and the movable blade 4 having a comb tooth shape are provided and the main blade M A pair of trimmer blades T, T, which are arranged on both sides
It is equipped as a blade.

As shown in FIG. 6, the outer blade 1 of the main blade M in this case is not only curved in the direction Y orthogonal to the reciprocating direction X of the inner blade 2 but also in the reciprocating direction X of the inner blade 2. Is also curved, and is attached to the outer blade frame 15 formed in a rectangular frame shape. This mounting is performed by inserting a plurality of mounting bosses 16 protruding from the side surface of the outer blade frame 15 into the mounting holes 10 provided on both sides of the outer blade 1. The boss 151 provided on the side surface of the outer blade frame 15 is for interlocking float with the trimmer blade T described later.

The outer blade frame 15 to which the outer blade 1 is attached is attached to the blade frame 8 shown in FIG. The blade frame 8 in the shape of a rectangular tube that opens vertically is provided with locking protrusions 83 and stoppers 84 located below the locking protrusions 83 on the inner wall surfaces at both ends in the longitudinal direction. The outer blade frame 15 having the elastic pieces 18 protruding from both ends in the direction and having the flat portions 17 on the upper surfaces of both ends is used as the blade frame
When the outer blade frame 15 is pushed in from below, the outer blade frame 15 is attached without rattling by the tip of the elastic piece 18 coming into contact with the inner wall surface of the blade frame 8, as shown in FIG. The outer blade 1 can be moved up and down between a position where the flat surface 17 of the outer blade 1 contacts the lower surface of the locking projection 83 and a position where the tip of the elastic piece 18 contacts the stopper 84. Outer blade frame 15
The projection 150 protruding downward from the lower edge of the one end side is for hanging a finger when the outer blade frame 15 is removed from the blade frame 8.

On the other hand, the inner blade 2 is formed as shown in FIG. 6 in which a large number of inner blades 21 are planted in parallel and in parallel on the upper surface of the inner blade base 20. 12, the inner blade blade 21 is ground so that the envelope connecting the upper ends of the respective tips becomes an arc having a curvature radius R1 of the curvature of the outer blade 1 in the X direction. Touch. Reference numeral 201 in FIG. 6 denotes an inner blade base 20.
It is an integral reinforcing rib.

The inner blade 2 is reciprocally driven by a driver 7 shown in FIG. A driver element 7, which is swingable by having a pin 70 pivotally support a middle portion in the vertical direction.
Has a cam groove 71 at its lower end with which an eccentric shaft 77 with a balancer 80 attached to the output shaft 76a of the motor 76 engages, and swings around the pin 70 as the motor 76 rotates. A connecting driver 9 is connected to the upper end of the driver 7 by a hook 79 so as to be vertically movable and biased upward by a compression coil spring 25.
The inner blade 2 is attached to the connecting driver 9, and a spherical connecting boss 22 provided on the inner blade base 20 is fitted into a connecting hole opened at the upper end of the connecting driver 9, and the inner boss 22 of the connecting boss 22 is attached. By engaging the hooks 72 provided at the upper ends of the coupling driver 9 with the engaging portions 23, 23 protruding on both sides,
The inner blade 2 is connected to the driver 7 via a connecting driver 9, and the inner blade 2 is tiltable to the left and right about an axis passing through both the engaging portions 23.

The inner blade 2 of the main blade M constructed as described above reciprocates along an arcuate locus along the inner surface of the outer blade 1 when the motor 76 is rotated, and the outer blade 1 is brought into contact with the skin. When pressed, the outer blade 1, the inner blade 2, and the connecting driver 9 sink against the compression coil spring 25 as shown in FIG. At this time, in order to make the reciprocating motion of the inner blade 2 smooth, here, the driving radius D1 of the inner blade 2, that is, the distance from the pin 70 supporting the driver 7 to the blade tip at the center of the inner blade 2. To
It is smaller than the radius R1 of the outer cutter 1. The distance from the pin 70 to the inner surface of the outer cutter 1 is set to increase toward both ends. The contact between the inner blade 2 and the outer blade 1 is performed by the urging force of the compression coil spring 25. However, due to the above-mentioned dimensional relationship, the inner blade 2 moves toward both ends in the reciprocating direction. The urging force received from the compression coil spring 25 is reduced, and the possibility that the outer blade 1 is caught is reduced. Also, by the float operation,
Although the distance from the pin 70 to the outer blade 1 and the inner blade 2 will also change slightly, the above-described configuration enables smooth driving of the inner blade 2 in close contact with the outer blade 1.

Further, here, the driving force F from the driver 7
When the inner blade 2 is transmitted to the inner blade 2 via the connecting driver 9,
In the contact range between the outer blade 1 and the outer blade 1 (corresponding to B in FIG. 12), the drag force of the inner blade 2 on the one end a side pushing the outer blade 1 is larger than the other end b side. The difference in the drag force is from the distance B between the inner blades 21 located at both ends of the inner blade 2 and the drive point at which the driving force F is transmitted to the inner blade 2 to the tip of the inner blade 21 located at the end. Ratio H / B with height H
Proportional to. That is, when the pushing-up force of the compression coil spring 25 is P, the reaction force applied to the a side is P / 2 + HF / B,
Since the drag force on the b side is P / 2-HF / B, a
The difference between b is 2HF / B, and if this value becomes large,
The inner blade 2 is easily lifted up with respect to the outer blade 1, and the difference in the degree of adhesion between the outer blade 1 and the both ends of the inner blade 2 is increased.

For this reason, here, the inner blade 2 is attached to the connecting driver 9 at the point where the driving force is received from the driver 7 in the connecting boss 22 so that the value of H / B becomes 0.3 or less. The value of H is made smaller by being positioned above the engaging portion 23, which allows the inner blade 2 to the inner blade 2 to move.
Of the outer cutter 1 and the inner cutter 2 are secured to each other, and a connecting driver 9 is provided so that it can be moved up and down with respect to the driver 7. Since the connecting boss 22 is engaged with the driving force F from the connecting driver 9 to the inner blade 2, the inner blade 2 and the outer blade 1 can be kept in close contact with each other even during the float. It always keeps good sharpness. The compression coil spring 25 may directly push up the lower end of the connecting boss 22 of the inner blade 2 without the connecting driver 9, and in this case, the same effect can be obtained.

Next, a pair of trimmer blades T arranged on both sides of the main blade M will be described. As shown in FIGS. 7 and 8, the trimmer blade T includes a base 5, a fixed blade 3 fixed to the curved upper surface of the base 5 by fitting a fitting projection 57, and The movable blade 4 is arranged on the upper surface side of the fixed blade 3 and is slid and guided by the fitting projection 57, the pressing spring 65 that presses the movable blade 4 toward the fixed blade 3, and the cover 6. When the vertical flat plate portion 66 is attached to the cover 6 by the engagement with the spring stop projection 60 and the cover 6 is attached to the base 5 by the hook 61, the vertical flat plate portion 66 is attached to the cover 6 and the base 5. The plurality of spring pieces 67 are brought into contact with the upper surface of the movable blade 4 while being sandwiched and fixed between them.

Further, the base 5 has a pair of hooks 52 at both ends, a pair of hanging pieces 50, 50 from the inside, and thin elastic members which are flexible connecting members at the lower ends of the hanging pieces 50, 50. The flat plate portion 54 connected by the pieces 53, 53 is provided below the central portion, and the hanging piece 5 is attached to the two pairs of locking portions 81, 82 formed on the inner wall surface in the lateral direction of the blade frame 8.
By inserting the 0 and the hook 52 and engaging them, the blade frame 8 can be slid vertically. At this time, the hook 52 prevents the base 5 from coming off with respect to the blade frame 8, and the hanging piece 50 on the base 5 is prevented.
The bottom wall of the base 5 is prevented from coming off by the contact between the upper end wall and the upper end of the locking portion 81. Further, the pair of coil springs 26, 26 arranged between the spring receiving projections 55, 55 at the lower ends of the both sides of the base 5 and the spring receiving projections 85, 85 provided on the inner wall of the blade frame 8 allow the trimmer blade to be cut. By urging T upward, the trimmer blade T is also floatable. The small protrusions 5a, 5a provided on the surface of the hanging piece 50 of the base 5 facing the inner surface of the blade frame 8 are trimmer blades T.
It is for reducing the sliding resistance at the time of float.

On the surface of the base 5 facing the inner surface of the blade frame 8, a boss 58 and a convex portion 5d located below the boss 58 are provided. The boss 58 enters the vertical groove 80 on the inner surface of the blade frame 8 to function as a guide for the vertical movement of the trimmer blade T when it floats, and also as a rotating shaft when the trimmer blade T tilts in the reciprocating direction. The convex portion 5d, which is also located in the groove 80, restricts the tiltable angle within a predetermined angle. The boss 58 is preferably provided near the upper end of the base 5 in order to facilitate the float.

The movable blade 4 of the trimmer blade T transmits the movement of the connecting driver 9 to the movable blade 4 by the trimmer driver 1.
It is reciprocally driven by 3. The trimmer driver 13, which is a sub-driver, has an elongated hole 5 formed in the base 5 at its upper end.
9 and the movable blade 4 through the long hole 3a provided in the fixed blade 3.
, Which is connected to the square hole 4a, has a hook 13b projectingly engaged with a window 5b provided on the base 5 from one surface of the central portion in the vertical direction so as to be freely movable within a predetermined range. ,
An engagement groove 13c that is long in the vertical direction is provided on the other surface. The hook 54a provided on the flat plate portion 54 of the base 5 is locked in the engagement hole 13a, so that the lower portion is fixed to the flat plate portion 54.

Here, the flat plate portion 54 of the base 5 is
Is provided integrally with the base 5 via the pair of thin elastic pieces 53, 53 as described above.
The trimmer driver 13 can also freely move in an arbitrary direction to some extent because it can freely move within the range in which it can bend. However, the upper end is restricted by being connected to the movable blade 4, and the hook composed of the hook 13b and the window 5b.
Since the downward movement is restricted by the engaging portion as the connecting portion , the connection with the movable blade 4 is not lost.

The trimmer driver 13 formed in this way
When the trimmer blade T is set on the blade frame 8, the vertical rib 9a provided on the side surface of the connecting driver 9 engages with the engaging groove 13c, thereby engaging with the connecting driver 9. The groove 13c is coupled to the coupling driver 9 in a vertical direction, which is the longitudinal direction, that is, in the float direction of the trimmer blade T, while being slidable and restrained in the reciprocating direction. Therefore, when the driver element 7 and the connecting driver element 9 swing (K2 in FIG. 24), the trimmer driver 13 also swings in the same direction (K3 in FIG. 24) and is formed in a comb-tooth shape. The movable blade 4, which is also formed in a comb-like shape, is reciprocally slid with respect to the fixed blade 3 that is being moved. Further, even when the trimmer blade T floats, the relative positions of the trimmer driver 13 and the coupling driver 9 are slightly changed in the vertical direction,
The above state is maintained. The trimmer driver 13 is also the pin 7
It swings about 0, which means that the change in the amplitude of the movable blade 4 is small even during the float.

Since the trimmer driver 13 and the movable blade 4 are connected near the sliding surface between the fixed blade 3 and the movable blade 4, the movable blade 4 floats above the fixed blade 3. Since the movable blade 4 can be driven in a state where the two blades 3 and 4 are in close contact with each other, the driving load is small, the cutting is good, and the noise is reduced.

Further, with respect to the float of the trimmer blade T, since the pair of coil springs 26, 26 urge the vicinity of both side ends of the trimmer blade T, a smooth float allowing an inclination in the reciprocating direction is possible. Has become. In addition, the engaging groove 13c in the engaging groove 13c and the vertical rib 9a
The engagement allowance in the depth direction is preferably made as large as possible to prevent the trimmer driver 13 from twisting easily. The noise caused by can be reduced. Instead of the vertical ribs 9a, a plurality of bosses protruding vertically at intervals may be provided and these bosses may be engaged with the engaging groove 13c.

Here, the trimmer blade T cuts hair in cooperation with the main blade M, that is, long hair is carried by the trimmer blade T, and short hair after cutting by the trimmer blade T is cut further by the main blade M. The trimmer blade T is also curved in the reciprocating direction of the inner blade 2 of the main blade M so that the above operation can be performed smoothly, but the fixed blade 3 and the movable blade 4 are curved in the sliding direction. When this is done, it becomes difficult to bring the movable blade 4 into close contact with the fixed blade 3 with no gaps over the entire area. Therefore, as shown in FIG.
The radius of curvature of the movable blade 4 is smaller than the radius of curvature of the movable blade 4 so that the movable blade 4 is brought into close contact with the fixed blade 3 when assembled, that is, when the movable blade 4 is pressed against the fixed blade 3. There is. Further, when forming the movable blade 4,
As shown in FIG. 9 (b), after being formed and curved so as to have a convex bending shape in its cross section like the fixed blade 3, as shown in FIG. 9 (c), By grinding the lower surface so as to be uniform, the rigidity of the movable blade 4 in the reciprocating direction is reduced and the close contact with the fixed blade 3 is ensured. Further, as shown in FIG. 9 (c), the blade edge portion of the movable blade 4 is inclined toward the fixed blade 3 by an angle δ, so that when the movable blade 4 is pressed against the fixed blade 3, Since it comes into close contact with the fixed blade 3 from the side, good sharpness can be obtained. Since the fixed blade 3 side has a convex shape in its cross section, the driving load does not increase due to the friction between the fixed blade 3 and the movable blade 4. In addition, in order to improve the adhesion of the trimmer blade T, the drive radius D2 is made smaller than the curvature radius R2 of the trimmer blade T for the same reason as in the case of the main blade M described above . In the electric razor thus formed, the main blade M and the pair of trimmer blades T located on both sides,
Normally, T is lined up at almost the same height as shown in FIG. 11, but since they are independently floatable, they are always in close contact with the skin depending on the unevenness of the skin. Then shave his beard (hair). That is, when the hair is pressed against the flat part of the skin, as shown in FIG. 14, the hairs are floated by substantially the same amount and kept in close contact with the skin, so that the hair can be removed effectively and efficiently. When pressed against the concave portion of the skin, as shown in FIG. 15, the trimmer blades T, T on both sides of the central main blade M are in contact with each other in a depressed state, and further contact with the skin. When pressed against the convex portion, as shown in FIG. 16, the central main blade M is in contact with the skin in a state in which it is more depressed than the trimmer blades T on both sides. Further, when the float amount is not pressed at a right angle to the skin, as shown in FIG. 17, the float amounts are different from each other and the floats come into close contact with the skin. Therefore, if the electric razor is moved in the direction orthogonal to the reciprocating direction of the blade while being pressed against the skin, the rough shaving of long hair by one trimmer blade T and the short shaving of the main blade M are performed. Is always done, and it is possible to shave hair very efficiently. In addition,
At normal times, the main blade M is made to project slightly higher than both trimmer blades T, T, and the contact pressure of the main blade M with the skin when contacted with the skin is made higher, so that the hair is shaved shorter. It can be done reliably.

Further, in the case shown here, when the trimmer blade T largely sinks, the main blade M also sinks in synchronization with this. That is, as shown in FIG. 18, the boss 151 provided on the side surface of the outer cutter frame 15 is attached to the trimmer blade T.
The base 5 is positioned in the vertical groove 5c in which the upper end is closed, and the trimmer blade T sinks and the boss 151 abuts the upper wall of the groove 5c as shown in FIG. When the blade T sinks, the main blade M is also pulled down and sinks as shown in FIG. At this time, since the float load changes greatly, the feeling of pressing against the skin is good and the contact with the skin is good.

Further, the main blade M has the connecting boss 22 as described above.
Since it is possible to incline about the center, that is, both ends in the reciprocating direction can float independently.
As shown in, it has good followability to the skin, and at this time,
Similarly, as shown in FIG. 22, both ends of the trimmer blade T can be floated independently of each other in the reciprocating direction, and can be freely tilted. Therefore, a gap between the trimmer blade T and the skin surface is unlikely to occur, and the reciprocating direction is almost the same. Since it adheres to the skin surface over the entire length, it is possible to perform hair removal without leaving a shave. And the connection driver 9
The power is transmitted to the trimmer driver 13 without any problem even when the inclinations of the main blade M and the trimmer blade T are opposite. Further, both side ends of the base 5 are biased by the coil springs 26, 26, respectively, and the angle at which the convex portion 5d provided on the base 5 can be tilted is regulated within a predetermined angle as described above. Therefore, the float is smoothly performed even when the trimmer blade T is tilted.

A skin contact guide 5e integrally projected from the base 5 from the cutting edge of the trimmer blade T toward a certain position in front of the trimmer blade T.
Has a curved shape similar to the above cutting edge, and has its upper end located on the line connecting the cover 6 with the cutting edges of the fixed blade 3 and the movable blade 4. For this reason, the trimmer blade T is placed on the skin. When pressed, there is no irritation from the cutting edge, and comfortable hair removal can be performed. Also, skin contact guide 5e
Since the tip of the hair is a raised protrusion 5f, the sleeping hair is also guided to the trimmer blade T to enable hair removal without shaving. If the pitch of the raised protrusions 5f is too small, the skin feels good, but when cutting long hair, the trimmer blade T
If it is too large, the long hair will be introduced well, but the contact with the skin will be poor. Therefore, it is desirable to set the pitch to 3 to 5 mm. The concave portion 5g provided between the skin contact guide 5e and the fixed blade 3 facilitates the cleaning of the hair scraps by improving the discharging property of the hair scraps and prevents the deterioration of the sharpness due to the clogging of the hair scraps. There is.

By the way, in order to follow deep recesses in the skin, in addition to increasing the float amount of the trimmer blades T, T, the overall width (W in FIG. 15) and the width of the trimmer blade T are reduced. The boss 151 for the interlocking float of the trimmer blade T and the main blade M, the trimmer driver 1
The reason why the engaging portion 3 of the connection blade 3 and the coupling driver 9, the coil spring 26, and the like are provided in parallel in the reciprocating direction of the movable blade 4 is to reduce the width of the trimmer blade T, and twisting occurs. This is to make it difficult.

Further, the trimmer driver 13 and the connecting driver 9
23, the parallel movement K0 of the trimmer driver 13 is possible, and the swinging K with the connection point with the movable blade 4 as a fulcrum is shown in FIG.
In particular, the lower part of the trimmer driver 13 is urged by the pair of thin-walled elastic pieces 53 , 53 so as to urge the lower part of the trimmer driver 13 to move. Therefore, the force of the thin elastic piece 53 is easily applied to the trimmer driver 13, so that the trimmer driver 13 can be easily attached to and detached from the coupling driver 9. In the trimmer blade T, the movable blade 4 reciprocates in an arc along the fixed blade 3 even when the trimmer driver 13 is moved in parallel.

In the above embodiment, both the main blade M and the trimmer blade T are curved in the reciprocating direction. However, even if the reciprocating linear motion is performed without such a curve, The power transmission mechanism from the driver 7 to the movable blade 4 through the trimmer driver 13 can be adopted as it is. Further, in the present embodiment, the first blade is the net-shaped main blade M and the second blade is the trimmer blade T, but this may be reversed, and it is also called a slit blade.
It may be any type of blade, regardless of the type of blade.

[0033]

As described above, according to the present invention, since the second blade can be floated independently, the blade has good followability to the skin and the sharpness of the central portion is always good regardless of the contact angle. Can be brought into contact with the skin and can be finished short without leaving any shave. Moreover, one end is connected to the movable blade of the second blade and is flexible to the non-reciprocating part of the second blade. Auxiliary drive element that is connected via a flexible connection member and is floatable integrally with the second blade is slidable in the float direction of the second blade and constrained in the drive direction of the second blade. Since it is connected to the drive element in the closed state, the connection state between the drive element and the sub drive element is not twisted regardless of the float state of the second blade. Large amount and to the skin While a good 従性, which can increase the transmission efficiency of the power from the drive element to the secondary drive child, the driving load is small, low noise, sharpness can keep a state of good. In addition, due to the existence of the engaging portion that restricts the movement of the sub drive element in the float direction,
The connection between the sub-driving element and the movable blade of the second blade does not come off during the float. Also, deputy
The engagement with the non-reciprocating part of the second blade in the driver
Part moves within a predetermined range with respect to the non-reciprocating part of the second blade
Since it is a free hook joint, the auxiliary drive element and the second
The non-reciprocating portion of the blade can be easily engaged.

Even if the second blade is curved in the reciprocating direction, the driving of the second blade by the auxiliary driving element can be performed without any problem. In this case, the armpit or the like. Even in the concave portion, it is possible to adhere to the skin regardless of how to apply it, and it is possible to shave short without leaving shaving.
Further, even if the first blade is also floatable and the followability to the skin is further improved, there is still no problem in terms of transmission of driving force.

Further, if the flexible connecting member is formed in a bent shape, the driving load can be further reduced, and a pair of flexible driving members located on both sides in the reciprocating direction of the auxiliary driving element can be formed. If it is connected to the non-reciprocating part of the second blade by the flexible connecting member, the reciprocating motion of the auxiliary drive element can be well maintained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a trimmer blade according to an embodiment.

FIG. 2 is a perspective view of the same.

FIG. 3 is a front view of the above.

FIG. 4 is a plan view of the above.

FIG. 5 is a cutaway perspective view of the above blade frame.

FIG. 6 is an exploded perspective view of the main blade of the above.

FIG. 7 is an exploded perspective view of the above trimmer blade.

FIG. 8 is an exploded perspective view of the above-mentioned trimmer blade.

FIG. 9 shows a trimmer blade of the above, (a) is a front view showing the radii of curvature of the fixed blade and the movable blade, (b) is a sectional view of the movable blade before the grinding step, and (c) is It is sectional drawing in the state after a grinding process.

FIG. 10 is an exploded perspective view showing a motor, a driver, and a connecting driver of the above.

FIG. 11 is a transverse sectional view of the above.

FIG. 12 is a vertical cross-sectional view showing the main blade of the above.

FIG. 13 is a vertical sectional view showing a floating state of the main blade of the above.

FIG. 14 is a transverse cross-sectional view showing the above floating state.

FIG. 15 is a cross-sectional view showing another float state of the above.

FIG. 16 is a transverse cross-sectional view showing still another float state of the above.

FIG. 17 is a transverse cross-sectional view showing another float state of the above.

FIG. 18 is a transverse sectional view showing the interlocking float structure of the above.

FIG. 19 is a transverse sectional view showing the interlocking float structure of the above.

FIG. 20 is a transverse cross-sectional view showing the same interlocking float structure.

FIG. 21 is a vertical cross-sectional view showing another operating state of the main blade of the above.

FIG. 22 is a longitudinal sectional view showing another operation state of the above trimmer blade.

FIG. 23 is a front view showing the movement of the above trimmer driver.

FIG. 24 is a front view showing another movement of the above trimmer driver.

[Explanation of symbols]

M main blade T trimmer blade 7 driver 13 Trimmer driver

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-6-142345 (JP, A) JP-A-4-231991 (JP, A) JP-A-6-154433 (JP, A) JP-A-4- 89083 (JP, A) JP 52-30558 (JP, A) JP 60-106484 (JP, A) JP 60-106485 (JP, A) Actual Kaihei 6-46671 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B26B 19/00-19/48

Claims (5)

(57) [Claims] 1. A first blade and a second blade, wherein a reciprocating drive element for the first blade is detachably connected to a reciprocating drive element for the second blade. In a reciprocating electric shaver in which a driving force is transmitted from a driver to a second blade through an auxiliary driver, both ends of the second blade in the reciprocating direction are supported to be independently floatable, and one end of the second blade is the second blade. The sub-driving element, which is connected to the movable-side blade of the second blade and is connected to the non-reciprocating portion of the second blade via a flexible connecting member so as to be freely floatable integrally with the second blade, is The second blade is slidable in the float direction and is coupled to the driver in a state of being restrained in the driving direction of the second blade, and the non-reciprocating portion of the second blade is connected to the non-reciprocating portion. It is provided with an engaging portion that restricts the movement of the auxiliary drive element in the float direction with respect to the reciprocating portion. , The second blade of the auxiliary driver is not stuck
The engaging portion for the returning portion is the non-reciprocating portion of the second blade.
On the other hand , a reciprocating electric razor characterized by being a hook coupling portion that can be freely moved within a predetermined range . 2. The reciprocating electric shaver according to claim 1, wherein the second blade is curved in the reciprocating direction. 3. The reciprocating electric shaver according to claim 1, wherein the first blade is also floatable. 4. The reciprocating electric shaver according to claim 1, wherein the flexible connecting member is formed as a bent one. 5. The sub-drivers are located on both sides in the reciprocating direction of the sub-drivers .
To the non-reciprocating part of the second blade by a pair of flexible connecting members.
The reciprocating electric shaver according to claim 1, characterized in that it is connected.