JPS6140435B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electric shaver equipped with a blade block for edge shaving.

Generally, the edge shaving blade block of this type of razor is moved in and out through a window in the case in conjunction with a switch operation button. That is, in the conventional type, when the operation button is in the first ON position, the inner blade for finishing shaving that constitutes the main drive blade is first driven, and when the operation button is turned from the first ON position to the second ON position.
When set to the position, the edge shaving blade block protrudes from the window and the movable blade of this blade block is driven.

By the way, when it is desired to remove hair debris adhering to the edge shaving blade block using a brush or the like, it is necessary to stop the movable blade of this blade block while the blade block is protruding from the window.

However, conventionally, when the operating button is in the second ON position, the edge shaving blade block protrudes from the window, but even if the movable blade is driven and the operating button is returned to the first ON position, the edge shaving blade block protrudes from the window. However, since the edge shaving blade block is retracted into the window at the same time as the movable blade is stopped, there is a drawback that the hair removal operation cannot be carried out as desired.

This invention was made in view of the above circumstances, and when the movable contact piece of the switch mechanism operated by the switch operation button is returned from the second ON position to the first ON position, the edge shaving blade block The movable blade of the edge shaving blade block is configured to be held so as to protrude from the window, and the movable blade of the edge shaving blade block is stopped so that it can be easily cleaned.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a case body that houses a motor 2 and a battery (not shown), 3 is a blade case that constitutes the head of the case body 1;
An outer cutter 4 for finish shaving is stretched over the outer cutter 4, and an inner cutter body 6, which is held by an inner cutter holder 5 and constitutes a main drive cutter, is brought into contact with the inner surface of the outer cutter 4. 7
9 is an eccentric cam fixed to the rotating shaft 8 of the motor 2, and 9 is a driver that is vibrated by the eccentric cam 7 via a vibration lever 10. At the tip of a drive rod 11 protruding from the driver 9, there is a The inner cutter holder 5 is connected, and the rotation of the motor 2 causes the inner cutter body 6 to reciprocate. Reference numeral 12 denotes a window formed in the front wall of the case body 1, and a edge shaving blade block 13 connected to and driven by the driver 9 is disposed in the window 12.

That is, as shown in FIG. 2, the blade block 13 supports a holder 15 that holds the fixed blade 14, a movable blade 17 that is pressed against the lower surface of the fixed blade 14 by a compression spring 16, and a compression spring 16. The fixed blade 14 and the movable blade 17 have comb blade parts 18 and 19 for edge shaving.
are formed respectively. 20 is the above holder 1
The pivot shaft 20 is a pivot shaft protruding from both left and right ends of the window 12.
1 by fitting the blade block 13 into the blade block 13.
is rotatably supported on the case body 1. Reference numeral 22 denotes a protruding piece formed at the rear end of the movable blade 17, and this protruding piece 22 comes to be engaged with and disengaged from the engaging portion 23 formed on the driver 9 as the blade block 13 rotates. ing. 24 is a long hole formed in the movable blade 17, and 25 is a guide pin that fits into the long hole 24 and guides the reciprocating movement of the movable blade 17 in the direction of the arrow.

In FIGS. 3 and 4, 26 is a switch operation button attached to the front of the case body 1,
It is set to slide a movable contact piece of a switch mechanism to be described later to an OFF position and first and second ON positions.

Reference numeral 27 denotes an in/out operation mechanism connected to the operation button 26, which rotates the blade block 13 to move it in and out of the window 12. This entry/exit operation mechanism 27
For example, the movable body 28 is directly connected to the switch operation button 26, and is pivotally supported by a pivot 29 protruding from the inner wall of the case body 1, and one end 30a is loosely fitted into the hook-shaped portion 31 of the movable body 28. rotating lever 3
0, a blade block drive member 68 connected to the other end 30b of the rotary lever 30, and driven in the vertical direction. A U-shaped engaging portion 33 is provided on each rising portion 32, 32 at both left and right ends of the drive member 68.
are formed respectively, and each of these engaging portions 33
are engaged with engaging protrusions 34, 34 (FIG. 2) formed on both left and right ends of the holder 15. 3
Reference numeral 5 denotes a spring member stretched between the drive member 68 and the case body 1.

When the switch operation button 26 is slid downward and set to the OFF position, the movable body 28 rotates the rotary lever 30 clockwise as shown in FIG. Since the end 30b pushes up the blade block drive member 68, the blade block 13 is rotated and stored in the window 12. Furthermore, by sliding the switch operation button 26 upward and setting it to the second ON position, the blade block 1
3 is projected from the window 12 as shown in FIG.

Here, the hook-shaped portion 31 of the movable body 28 and the one end 30a of the rotary lever 30 are arranged in the direction of displacement of the switch operation button 26, that is, in the vertical direction.
As shown in FIG. 5, since they are fitted with a loose fitting gear G, the switch operation button 26 can be pressed.
At the first ON position in the forward stroke of displacement from the OFF position to the second ON position, the rotating lever 30 does not rotate, so the sharp razor blade block 13 is set to remain stored within the window 12. can be done.

When the switch operation button 26 is moved to the second ON position, the one end 30a of the rotating lever 30 is pushed up against the lower surface 31a of the hook-shaped portion 31, so that the blade block 13 is projected from the window portion 12. . Furthermore, the switch operation button 26 is
Conversely, at the first ON position in the return stroke when displacing from the ON position to the OFF position, the gap G
Therefore, the blade block 13 can be kept protruding from the window 12.

FIG. 6 shows a switch mechanism 36 housed in the case body 1 and interlocked with the switch operation button 26. In the figure, 37 is an electrically insulating switch board, and the main surface of the switch board 37 has a A pair of fixed contact pieces 38 and 39 are connected to the switch operation button 2.
6 are sequentially arranged in the direction of displacement. Each fixed contact piece 38, 39 is electrically connected to one terminal of the motor 2 and one pole side of the battery, respectively. 40 is a saddle-shaped movable contact piece, 41 is a cover attached to the switch board 37, and the movable operator 42 is set on this cover 41 so as to be slidable in the direction of displacement of the switch operation button 26. The movable operator 42 has a locking piece 44 that is locked between the engaging rib portions 43 formed on the movable body 28 and a hole 40a formed in the movable contact piece 40. Connecting pins 45 for rotatably connecting the movable contact pieces 40 are fixedly attached to each other, and the movable contact pieces 40 are connected to the fixed contact pieces 3 by sliding displacement of the switch operation piece 26.
8 and 39 are connected to and separated from each other.

Reference numeral 46 denotes a spring member suspended between the movable contact piece 40 and the movable operator 42, and applies a spring force so that the movable contact piece 40 is rotated in the direction of arrow b about the connecting pin 45. It is in force. 4
7 and 48 are OFF for the movable contact piece 40.
A guide wall portion 49 guides the movable contact piece 4 from the position to the first ON position and the second ON position.
0 is a direction changing wall part that separates the movable contact piece 40 from the fixed contact pieces 38 and 39 at the first ON position when the movable contact piece 40 is displaced from the second ON position to the OFF position side, and the guide wall part 47 and 48. Each of these wall parts 4
7, 48, 49 and the spring member 46 constitute a switch OFF mechanism 50.

In the switch mechanism 36, when the switch operation button 26 is operated to slide the movable contact piece 40 from the OFF position to the first ON position, the movable contact piece 40 moves toward the direction change wall as shown in FIG. 4
9 and is set to the first ON position, the switch mechanism 36 is turned ON, and the drive element 9 drives the main driving blade 6 (FIG. 1). In order to make it easier for the movable contact piece 40 to get over the direction changing wall 49, a tapered surface 51 is formed on the wall 49. Furthermore, when the switch operation button 26 is displaced, the movable contact piece 40 is set to the second ON position, so that the edge shaving blade block 13 is moved toward the window 12.
The movable blade 19 of the blade block 13 is connected to the driver 9 side and interlocked with the main driving blade 6. When the operation button 26 is displaced from the second ON position to the first ON position during the backward stroke, the movable contact piece 40 resists the spring force of the spring member 46 and moves to the front surface of the direction change wall 49. Since the movable blade 17 is rotated along the same direction and detached from the fixed contact piece 38, the drive of the movable blade 17 is stopped even if the cutting blade block 13 is protruding from the window 12 at this time. . Further switch operation button 26
When the movable contact piece 40 is displaced to the OFF position side, the movable contact piece 40 comes off the direction changing wall 49 and the spring member 4
At the same time, the edge shaving blade block 13 is rotated in the direction of the arrow b by the spring force 6 and returned to its original state.
2.

In this way, when the movable contact piece 40 reaches the first ON position during the backward stroke by operating the switch operation button 26, even if the edge shaving blade block 13 is in the protruding state, the movement of the blade block 13 is temporarily stopped. Since the drive of the blade 17 can be stopped, the blade block 13 can be easily cleaned of hair and other debris.

In addition, in the above embodiment, the direction changing wall portion 4
9 to separate the movable contact piece 40 from the fixed contact piece 38 at the first ON position.
Not limited to this means, for example, as shown in FIG. 8, by configuring the fixed contact piece 38 with divided contact pieces 38a and 38b and configuring the pin hole 40a formed in the movable contact piece 40 with a long hole, Other modification means are possible, such as means for separating the movable contact piece 40 from the fixed contact pieces 38, 38a, 38b at the first ON position during the backward stroke. Further, in the above embodiment, the edge cutting blade block 13 is configured to be moved in and out through the window portion 12 by rotational displacement.
Even if the device is configured to be moved in and out by sliding displacement, it can be applied. That is, the ninth
In the figure and FIG. 10, 53 is the case body 1
An L-shaped blade block drive member rotatably supported inside the blade block 1. This drive member 53 and the movable body 28 directly connected to the switch operation button 26, etc.
3, in which pin-shaped engagement protrusions 55 at both ends of the box-shaped fixed blade holder 15 are fitted into long holes 54 formed in the tip 53a of the drive member 53. At the same time, the driving member 53
The base end 53b of the movable body 28 is connected to the hook-shaped portion 31 of the movable body 28.
The edge shaving blade block 13 is inserted into and removed from the window 12 of the case body 1 by sliding the switch operation button 26. 56 is the box-shaped fixed blade holder 15
It is a lever for driving a movable blade that is pivotably supported horizontally on a central pin 57, and a protrusion 5 on the front end thereof.
8 is locked in the engagement hole 59 of the movable blade 17, and a cam receiving hole 61 is fitted at the rear end into which the eccentric cam 60 fixed to the rotating shaft 8 of the motor 2 is fitted.
A loose fitting hole 62 is formed which communicates with the cam receiving hole 61 and allows the eccentric cam 60 to rotate idly at a position in front of the cam receiving hole 61. Reference numeral 63 denotes a spring member which is stretched between the case body 1 and the fixed blade holder 15 and provides moderation when the sharp shaving blade block 13 is moved in and out.
4 is an inner cutter inscribed in the outer cutter 65, 66 is an inner cutter holder, and 67 is a rotating body fixed to the tip of the rotating shaft 8 of the motor 2 to drive the holder 66.
The switch mechanism 36 has the same structure as the above embodiment.

In the case of this embodiment as well, the switch operation button 26 is moved from the OFF position shown in FIG. 10 to the first ON position shown in FIG.
When the edge shaving blade block 13 is set to the ON position, the edge shaving blade block 13 protrudes from the window 12 of the case body 1, and in conjunction with this, the movable blade drive lever 56 moves forward.
is fitted into the cam receiving hole 61, and the movable blade 17 is operated via the lever 56. Above switch operation button 2
Even at the first ON position (Fig. 13) during the homeward stroke of No. 6, due to the gap G explained in the above embodiment,
The driving member 53 does not displace, and the protruding state of the edge shaving blade block 13 is maintained, and at this time, the operation of the movable blade 17 is stopped by turning off the switch mechanism 36, making it easy to clean hair and other debris. can be done.

As described above, in the first ON position of the movable contact piece of the switch mechanism operated by the switch operation button in the return stroke, this invention maintains the edge cutting blade block protruding from the window part. In addition, since the switch mechanism is configured to turn off, cleaning can be easily performed while the movable blades in the protruding blade block are kept stationary.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the head of an electric shaver according to the present invention, FIG. 2 is an exploded perspective view of the edge shaving blade block of the electric shaver, and FIG.
FIG. 4 is a perspective view showing the mechanism for moving the edge shaving blade block in and out, FIG. 5 is an explanatory diagram of the movement of the edge shaving blade block in and out, and FIG. Fig. 7 is an explanatory diagram of the operation of the switch mechanism, Fig. 8 is an explanatory diagram showing a modification of the mechanism for turning off the switch mechanism in order of operation, Fig. 9 is a perspective view showing the main parts of another embodiment, and Fig. 10 Figure ~ 13th
The figure is a sectional view showing the retracted and protruded states of the edge shaving blade block. 1... Case body, 6, 64... Main drive blade, 12
... Window section, 13 ... Edge shaving blade block, 17
...Movable blade, 26...Switch operation button, 27...
Blade block in/out operation mechanism, 36... switch mechanism, 50... switch OFF mechanism.

Claims (1)

[Claims] 1. A edge shaving blade block 13 that is attached to the main body 1 so as to be able to enter and exit from the window 12 of the case main body 1, and in which the movable blade 17 is driven in conjunction with the main drive blades 6 and 64 in a protruding state; a switch operation button 26 that slides the movable contact piece 40 of the slide switch mechanism 36 from the OFF position to the second ON position via the first ON position; 40 pieces
At the OFF position, move the blade block 13 to the window 12.
In addition to storing it in the
A blade block in/out operation mechanism 27 that causes the blade block 13 to protrude from the window 12 at the position and further holds the blade block 13 in the protruded state until the first ON position during the backward stroke; ON
An electric shaver equipped with a switch OFF mechanism 50 that temporarily turns the switch mechanism 36 into an OFF state at a certain position.