JPS603500B2 - electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver equipped with a comb-type fixed blade and a movable blade.

In this type, the cutting edge of the fixed blade was conventionally made to protrude beyond the cutting edge of the movable blade so that the cutting edge of the movable blade would not injure the skin, and in order to use the fixed blade in contact with the skin, the plate of the fixed blade was If the hair is too thick, there will always be some unshaved parts. Moreover, because the fixed blade in this type must have high rigidity, the thickness of the fixed blade is not as thin as the fixed blade (outer blade) of a rotary blade type electric shaver, and the length of the unshaved portion must be extremely long. It's this long. If the blade edge of the fixed blade is set back from the blade edge of the movable blade, it is possible to cut the hair so that the unshave is shortened, but as mentioned above, the blade edge of the movable blade will damage the skin. On the other hand, if a member is provided to regulate the position of the skin and the fixed blade and movable blade are placed behind this member to prevent direct contact between the skin and the movable blade, the introduction of long hair will be difficult. It becomes difficult to cut. The present invention has been developed in view of these points, and it solves the conflicting problems mentioned above, and makes it possible to shave short hair without damaging the skin, and also to cut long hair. There are electric shavers available to you.

The present invention will be described in detail below based on the illustrated embodiment. In the figure, 5 is a housing, in which a power switch 10 is disposed on one side and a guide plate 3 is disposed on the front so as to be movable up and down.

Reference numeral 11 denotes an operation section for moving the guide plate 3 up and down. The upper end surface of the housing 5 is formed by a plate 4 that is removably attached to the housing 5 and has a smooth slope that is higher at the rear and lower at the front. A closure is provided at the front edge of the upper end of the housing 5,
The cutting edge of the fixed blade 1 and the cutting edge of the movable blade 2 respectively face this gate. The movable blade 2 is attached so as to be slidable in the left and right direction, and the rotation of the motor 12 in the housing 5 is controlled by the eccentric cam 13.
It is said that reciprocating movement in the left and right direction is caused by engagement with the
A push-up spring 15 wound around the drive shaft 14 makes it come into elastic contact with the lower surface of the fixed blade 1 located above. The fixed blade 1 is attached so as to be able to move back and forth in the front and back direction, and the rear end of the engaging punch 16 that extends rearward comes into contact with the front surface of the movable blade 7 located inside the rear part of the housing 5. The movable body mass 7 is urged rearward by the spring 8 so as to come into elastic contact with the movable body mass 7. The front surface of the movable body member 7 has an inclination and several step portions 19 are continuously formed vertically, and when the movable member 17 is moved up and down, the rear end of the engaging punch 16 comes into contact with the rock. The fixed blade 1 moves forward and backward as the part turtle 9 moves, so that the protruding length of the blade tip from the opening can be changed. Here, the movable body 17 moves up and down in response to the vertical movement of the t-guide plate 3, and the movable body 17 is connected to a rack 21 provided on the back side of the guide plate 3.
A pin that engages both the rack 23 and the rack 23 provided on the front side of the pin. 22 is provided, and the movable body 7 is also moved up and down via the pinion 22 by only the operation part g of the guide plate 3, so that the fixed blade can be moved back and forth. When shaving hair short, the guide plate 3 is pushed up to shorten the protruding length of the fixed blade 1 that moves against the guide plate 3, and a blade is formed between the upper edge of the guide plate 3 and the cutting edge of the fixed blade 1. The tip of the movable blade 2 is positioned in the introduction part 6 where the movable blade 2 is brought into contact with the skin 8 while the plate 4 that smoothly continues on the upper surface of the cutting edge of the fixed blade 1 and the upper green of the guide plate 3 are brought into contact with the skin 8. Just move it.
In this case, although the movable blade 2 protrudes from the fixed blade 1, the guide plate 3 prevents the skin from being damaged by the tip of the movable blade 2, and also changes the pressing force against the skin so that it can contact the top surface of the movable blade 2. The condition can be adjusted, and if some of the bristles 7 that are not introduced into the blade groove of the fixed blade 1 are introduced into the blade groove of the fixed blade 1, the blade thickness of the fixed blade 1 becomes thinner at the tip. Since the scales are cut by the movable blade 2 and the movable blade 2, the length of the unshaved portion is shorter than the thickness of the fixed blade 1. When shaving long hair, the guide plate 3 can be lowered. As a result, the fixed blade 1 moves forward, and the fixed blade 1 protrudes beyond the cutting edge 3 of the movable blade 2. In this case, the fixed blade 1 causes the movable blade 2 to
This prevents the cutting edge from coming into direct contact with the skin, and does not cause irritation to the skin. By the downward movement of the guide plate 3, the introduction part 6 is expanded, so that the long hair 7 is also introduced into the blade groove of the fixed blade 1 without being obstructed by the guide plate 3, and is cut between it and the movable blade 2. . FIGS. 4 and 5 show other examples of an interlocking mechanism between the vertical movement of the guide plate 3 and the longitudinal movement of the fixed blade vine.

One end of the bell crank 24 supported in the housing 5 is connected to the back of the guide plate 3 ~ the end of the bell crank 24 is connected to the rear end of the engagement punch 16 of the fixed blade 1 to connect the toggle plate 3.
When the fixed blade 1 is moved up and down, the fixed blade 1 also moves forward and backward via the bell crank 24. In addition to simply adjusting short or long hair, it is also possible to continuously adjust the positional relationship between the upper edge of the guide plate 3, the cutting edge of the movable blade 2, and the cutting edge of the fixed blade turtle. From this point of view as well, the degree of contact between the skin and the blade surface and the degree of shaving can be adjusted. As described above, in the present invention, the fixed blade is movable back and forth, the guide plate whose upper line is positioned in front of the cutting edges of the fixed blade and the movable blade is movable up and down, and furthermore, the guide plate can be moved up and down. It has an interlocking mechanism that links the forward and backward movements of the fixed blade and the fixed blade, so when the fixed blade is moved back, the guide plate also moves upwards and approaches the movable blade, allowing for deep cuts without damaging the skin. In addition to being able to shave, when the fixed blade moves forward, the guide plate also moves downward and away from the movable blade, making it easy to cut long hair without being obstructed by the guide plate. The guide plate automatically changes its position to adjust the contact between the skin and the blade surface, depending on the degree of shaving and the risk of damaging the skin, which varies by adjusting the front and rear positions of the fixed blade. It is.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIGS. 2 and 3 are sectional views of the same, and FIGS. 4 and 5 are sectional views of other embodiments, in which 1 is a fixed blade; 2 is a movable blade, 3 is a guide plate, 4 is a plate, 5 is a housing and 6 is an introduction part. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5

Claims (1)

[Claims] 1. A comb-shaped fixed blade arranged on the top of the housing with the cutting edge facing forward, a comb-shaped movable blade located below this fixed blade and driven to slide back and forth in the left and right direction, the fixed blade and the movable blade. The fixed blade is equipped with a guide plate whose upper edge is placed in front of the cutting edge of the blade, and the fixed blade can be moved back and forth in the forward and backward directions and its position with respect to the movable blade is variable. The fixed blade and the guide plate are connected via an interlocking mechanism, and the fixed blade retreats and the guide plate moves upward to approach the movable blade, and the fixed blade moves forward and guides the movable blade. An electric shaver characterized in that the downward movement of the plate away from the movable blade is linked.