JPH02161976A - Hair cutter - Google Patents

Abstract

PURPOSE:To easily and safely cut hair uniformly by making the edge of a blade and a hair holding member into a freely approaching and separating state and equipping the hair cutter with an interlocking switch to turn on/off a driving means under an interlocking state with the approaching and leaving operation between the edge and the hair holding member. CONSTITUTION:When a slide switch 41 is positioned at the rearmost position, a main switch is turned off. When hair is guided in, and after that, a hair holding member 3 is rotated against a spring 65 for a body 1 by gripping the body 1 and the hair holding member 3, the interlocking switch is turned on, and a motor 5 rotates and makes a movable blade 22 execute a reciprocating motion. Further, hair to be interposed between the edge and the hair holding member 3 to approach each other is cut by the blade, and cut off hair is stored in the front space of a battery housing part protruding to the lower surface of the body 1, namely, cut-off hair housing part between a partition 32 and a comb part 31 in the hair holding member 3.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a hair cutter that cuts hair using a comb-shaped fixed blade and a movable blade that are in sliding contact with each other.

[Conventional technology]

Scissors are a common household barber tool, but they are used to hold hair between your fingers and cut the hair that comes out between your fingers. However, since the hair slips out between the scissors, it requires considerable skill to cut the hair straight. On the other hand, there is a hair cutter that has been provided as a household barber tool in the past, and is equipped with a blade consisting of a comb-shaped fixed blade and a movable blade. In this case, hairdressing is much easier than using scissors, and it is also relatively easy to cut the hair straight.

[Problem to be solved by the invention]

However, when using this blade, the edge of the blade inevitably comes into contact with the skin, giving the user a sense of danger, and in fact, use on young children should be avoided. The present invention has been made in view of these points, and its purpose is to provide a hair cutter that can easily and safely trim hair.

[Means to solve the problem]

Therefore, the present invention comprises a blade consisting of a comb-shaped fixed blade and a movable blade that are in sliding contact with each other, a hair holding member facing the cutting edge of the blade, and a driving means for the blade. It is characterized by being able to freely move toward and away from each other, and by being equipped with an interlocking switch that turns on and off the drive means in conjunction with this approaching and separating operation. [Function] According to the present invention, if the tip of the hair is inserted into the space between the cutting edge of the blade and the hair holding member facing it, and the blade and the hair holding member are brought close to each other, the hair will be held. Since the blade cuts while being pressed onto the member, the blade tip does not come into contact with the skin, and the drive of the blade is linked to the movement of the blade towards and away from the hair holding member. Because of this, the movement of the blade is stopped when the tip of the hair is inserted into the space between the cutting edge of the blade and the hair holding member, so that the hair can be easily introduced. [Example] The present invention will be described in detail below based on the illustrated example. This hair cutter has a blade block 2 disposed at the tip of a main body 1, and a hair holding member 3 disposed on the lower surface side of the main body 1. First, the main body 1 will be explained. The housing is made up of an upper housing 11 and a lower housing 12 that are connected by a single screw as shown in FIG. 4, and a motor 5 is disposed inside as shown in FIGS. At the same time, a slider 4 is disposed so as to be slidable back and forth, and a rotating body 6 is further disposed in the rear part. A battery storage section covered with a battery cover 13 is provided near the rear of the lower surface of the main body 1. The blade block 2, which is removably attached to the tip of the main body 1, includes a base plate 20, a fixed blade 21 fixed to the inner surface of the base plate 20, and a movable blade that is slidable relative to the fixed blade 21. 22, a spring (not shown) that urges the movable blade 22 toward the fixed blade 21, and a cam 23 fixed to the movable blade 22, which locks one end of the board 20 to the upper housing 11. At the same time, the locking springs 25, 25 shown in FIG.
It is attached to the main body 1 by locking it to the main body 1. When installed in this way, the joint 51 is fixed to the output shaft facing the front side of the motor 5.
A protruding eccentric shaft 52 engages with a vertical groove in the cam 23, and as the motor 5 rotates, the movable blade 21 is driven back and forth. If the blade block 2 is arranged to form an angle θ of approximately 50 to 90'' with respect to the longitudinal direction of the main body 1, visual confirmation when cutting hair will be facilitated. The slider 4 is mounted so as to straddle the motor 5, and has a switch handle 4 exposed on one side of the main body 1 on its side.
1 and a pair of locking protrusions 42, 42 protruding from both sides of the main body 1, and a click spring 43 protruding forward in the center, and further toward one side, a pair of locking protrusions 42, 42 protruding from both sides of the main body 1. As shown in the figure, a protruding piece 44 is provided which protrudes rearward and to which the switch spring 70 is fixed on the lower surface. The click spring 43 engages with a click protrusion 15 that is shaped like a figure 8 as shown in FIG. Give. Note that the click protrusion 15 here is formed as a rib whose tip touches the side surface of the motor 5 to prevent the motor 5 from rattling. The rotating body 6 arranged in the rear part of the main body 1 is rotatable by having a shaft part 60, which has connecting parts 62, 62 formed at both ends thereof, supported by upper and lower housings 11, 12. The upper housing 11 is biased counterclockwise in FIG. 2 by a spring 65 disposed between the inner surface of the upper housing 11 and the inner surface of the upper housing 11. The connecting portions 62 located on the outer surface sides of both rear side surfaces of the main body 1 are connected to the hair holding member 3, which will be described later, and are connected to a click spring 63.
The connecting portion 64 in Fig. 6 is provided with a bearing groove 65.
2 and the inner peripheral edge of the bearing groove 65. The battery storage section provided so as to protrude downward toward the rear of the lower surface of the main body 1 is covered by the battery cover 13 as described above. A notch 16 is provided in the side wall of the battery storage section, and the battery 7 can be opened with the battery cover 13 removed.
The notch 16 makes it easy to attach and detach. Reference numeral 71 in FIG. 4 is a switch board that is attached to the lower housing 12 so as to be slidable up and down, and that moves up and down as the rotating body 6 rotates by engaging with a protrusion 61 provided on the rotating body 6. , 72 is a switch spring attached to this switch board 71, and controls conduction between a cathode terminal 76 connected to the cathode of the motor 5 and the switch contact plate 73. On the other hand, as the slider 4 moves back and forth, the switch spring 70 attached to the slider 4 establishes continuity between the cathode fitting 74 connected to the negative electrode of the battery 7 and the switch contact plate 73, and the cathode fitting 74 and the cathode terminal. 76. The anode of the motor 5 and the positive electrode of the battery 7 are connected by an anode fitting 75.
A circuit diagram is shown in FIG. The switch spring 70 constitutes the main switch SW in the figure, and the switch spring 72 constitutes the interlocking switch SW2. Next, the hair holding member 3 will be explained. The hair holding member 3 here is formed so that its cross section is U-shaped, and connecting portions 36 are provided at the rear ends of both side walls.
．． 36, and there is a partition 32 near the front of the bottom wall that connects both side walls, and the thickness a is considerably smaller than the height b at the tip edge of the bottom wall, as shown in FIG. It has a seed part 31 with rows of teeth, and further has an anti-slip rib 33 and an anti-slip protrusion 34 on the lower surface side. As shown in FIG. 5, L-shaped lock grooves 35 are provided on the inner surfaces of both side walls into which the lower part of the main body 1 is fitted. The pair of connecting portions 36.36 facing each other are rotatably connected to the connecting portions 62.62 of the rotating body 6, and are connected to the cylindrical shaft 38 received in the bearing groove 65 of the connecting portion 62. , the click protrusion 37 that engages with the click spring 63, and further abuts against the side wall of the connecting portion 62 in FIGS. 11 and 1.
The engagement wall 3A shown in FIG. 4 and FIG. 17 is provided. When the engaging wall 3A is in contact with the side wall of the connecting portion 62 and the click protrusion 37 is engaged with the click spring 63, the rotating body 6 and the hair holding member 3 rotate together. The rotating body 6 is biased against the hair holding member 3 by the spring 65 as well. In this hair cutter, when the slide switch 41 is positioned at the rearmost position, the main switch SW1 is turned off, and when the slide switch 41 is moved rearward, the main switch SW1 is turned off. If the hair holding member 3 is rotated against the spring 65 so that the lower part of the main body 1 fits into the hair holding member 6, the locking protrusion 42, which moves together with the slide switch 41, will lock onto the inner surface of the hair holding member 3. In order to fit into the lock groove 35, the above state is maintained as shown in FIGS. 9 to 12. In this state, the cutting edges of both the comb-shaped fixed blade 21 and the movable blade 22 in the blade block 2 are covered with the seed part 31 at the tip of the hair holding member 3, and the cutting edges are protected. Now, if the slide switch 41 is slid forward one step from this state, the locking protrusion 42 will move forward together with the slide switch 41 and be pulled out of the locking groove 35 by being biased by the spring 65. As the rotating body 6 rotates until it comes into contact with the inner surface of the lower housing 12, the hair holding member 3 also rotates, and as shown in FIGS. 13 to 15, one hair holding member per main body 1 is rotated. 3 is almost 1
Open until it forms a 5° angle. Incidentally, at this point, both side walls of the hair holding member 3 are in a position overlapping the main body 1, and there is no possibility that fingers will be caught between them. At this time, the main switch SW1 is switched to the cathode metal fitting 74.
A state is established in which conduction is established between the switch contact plate 73 and the switch contact plate 73. However, due to the rotation of the rotating body 6, the interlocking switch S
Since W2 is turned off, the motor 5 does not rotate in this state. Ordinary hair cutting is performed in this state, that is, by placing the thumb on the recess 14 on the top surface of the main body 1 and grasping the main body 1 and the hair holding member 3, the cutting edge of the blade consisting of the fixed blade 21 and the movable blade 22 is used. As shown in FIG. 19, the hair to be cut is introduced between the hair holding member 3 and the hair holding member 3, which is opposed to the cutting edge at a predetermined distance. Since the motor 5 is stopped and the movable blade 22 is not moving, hair can be easily introduced. After introducing the hair, when the hair holding member 3 is rotated relative to the main body 1 against the spring 65 by gripping the main body 1 and the hair holding member 3, the interlocking switch SW2 is turned on. The motor 5 rotates to reciprocate the movable blade 22, and the hair that is caught between the blade edge and the hair holding member 3 that approach each other is cut by the blade, and the battery storage that protrudes from the bottom surface of the main body 1 is cut. Cut hair debris accumulates in the space in front of the hair holding member 3, that is, in the hair debris storage portion 30 between the partition 32 and the picking portion 31 of the hair holding member 3. Comb-shaped fixed blade 2
1 and a movable blade 22, the hair can be cut as if using scissors. Draw a smooth curve on the tip side of the hair holding member 3 to attach the main body 1.
(The reason why the diagonal surface approaches !l is to match the curved shape of a person's collared foot, and this makes it easy to introduce the tip of the hair between the cutting edge and the hair holding member 3. To explain in more detail the above-mentioned hair cutting state, the fixed blade 21 and the movable blade 22 in the direction block 2 are
As is clear from Figure 1, the cutting edge of the fixed blade 21 is more protruding than the cutting edge of the movable blade 22, and if this step dimension is d, the knob 31 is larger than this step. Since the fixed blade 21 is provided so as to protrude toward the blade side by a large height C, when the tip of the fixed blade 21 contacts the root side of the picking part 31 of the hair holding member 3 at an angle α of approximately 70 to 90 degrees, the picking occurs. The portion 31 overlaps the cutting edge of the fixed blade 21 and the cutting edge of the movable blade 22, so that the hair is surely cut at that position without escaping or curling. Therefore, it is easy to straighten the hair, and if an indicator 28 indicating the cutting position is provided on the side of the hair holding member 3, as shown in FIG. It becomes easier to cut in alignment. If the angle α is less than 70'', the movable blade 22 may slip on the hair, making it difficult to cut the hair well. The anti-slip protrusion 34 facilitates secure holding and prevents the main body 1 from turning in the hand or dropping it. When the slide switch 41 is moved further forward, The main switch SWI establishes conduction between the cathode fitting 74 and the cathode terminal 76 to bypass the interlock switch SW2, so the motor 5 continues to rotate regardless of whether the interlock switch SW2 is on or off. It is used when cutting hair without using the hair holding member 3 described in 2. In other words, the hair holding member 3 is held against the main body 1 against the engagement between the click protrusion 37 and the click spring 63 of the rotating body 6. If the hair holding member 3 is further moved in the opening direction, the hair holding member 3 which has been disengaged from the rotating body 6 will be brought into a state where its rear end surface is in contact with the stopper 18 provided on the main body 1, that is, as shown in FIG. As shown in FIG. 22, the hair holding member 3 can be opened to an angle of approximately 120 degrees to the main body 1. If this state is utilized, hair holding members 3 can be used in places where the presence of the hair holding member 3 would be a hindrance, such as around the ears. The hair holding member 3 can be cut at the connecting portion 62 between the rotating body 6 and the hair holding member 3.
The tapered surfaces 64° and 39 formed on the hair holding member 3 are opposed to each other when the hair holding member 3 is in a wide open state, and when a strong force is applied to the hair holding member 3, the tapered surfaces 64° and 39 are formed on the hair holding member 3. The hair holding member 6 is made to come off easily, and the hair holding member 3 and the connecting portions 62, 36 are not damaged due to overload. As shown in FIG. 18, the battery 7 can be easily replaced by leaving the hair holding member 3 in a wide open state so that the hair holding member 3 does not get in the way, and due to the presence of the notch 16. It can be carried out'. Furthermore, as is clear from this figure, since the amount of overlapping of the battery cover 13 with respect to the main body 1 is increased, the hair debris overflowing from the hair debris storage section 30 of the hair holding member 3 is absorbed into the battery storage section. There's no way I'll get into it.

Effects of the Invention As described above, the present invention includes a blade consisting of a comb-shaped fixed blade and a movable blade that are in sliding contact with each other, and a hair holding member facing the cutting edge of the blade, so that the cutting edge of the blade and the hair holding member are provided. Since the holding member can be freely moved towards and away from the blade, if the hair is guided into the space between the cutting edge of the blade and the hair holding member facing it, and the blade and the hair holding member are brought into contact, the hair will be removed. The blade cuts while being pressed onto the hair holding member, and since the hair holding member is located between the cutting edge and the skin, the cutting edge does not come into contact with the skin. It is safe to use even on young children and can reliably cut hair straight, and the drive means for the blade is linked to the movement of the blade and the hair holding member toward and away from each other. Since the blade is turned on and off by an interlocking switch, the blade is driven in conjunction with the movement of the blade and the hair holding member toward and away from each other. The blade stops moving when inserting the hair, making it easier to introduce the hair, and it is energy-saving compared to those that keep the blade running all the time, and is powered by batteries. In addition to being suitable for this purpose, it also promotes longevity and differentiation.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same, Fig. 3 is a plan view of the same with the upper housing, blade block, and hair holding member removed. 5 is a front view showing the locking groove on the inner side surface of the hair holding member, FIG. 6 is a perspective view of the seed part of the hair holding member, FIG. 7 is a front view of the click protrusion, and FIG. Figures (a) and (b) are a plan view and a rear view, Figures 9 to 12 are a perspective view, a side view, a broken side view, and a sectional view showing the hair holding member in a closed state, and Figures 13 to 15. The figure shows a side view, a broken side view, and a sectional view showing the hair holding member in the cutting standby position, and Figures 16 to 18 show a side view, broken side view, and exploded side view with the hair holding member retracted. 19(a) and 19(b) are a side view and a cutaway side view showing the state of use, FIGS. 20(a) and (b) are a side view and a broken side view showing the same state of use, and FIG. 21(4)
a) and (b) are enlarged sectional views of the same as above, FIG. 22 is a side view showing another state of use, and FIG. 23 is a circuit diagram of the same as above;
2 is a main body, 2 is a blade block, 3 is a hair holding member, 21 is a fixed blade, 22 is a movable blade, and SW2 is an interlocking switch. Figure 5 Agent Patent Attorney Ishi 1) Chief 7 Figure 8 (G) (b) Figure 9 Figure 10 Figure 13 Figure 21 (G) (b) Figure 23 SW+ August 19, 1999

Claims (1)

[Claims] (1) A blade consisting of a comb-shaped fixed blade and a movable blade that are in sliding contact with each other, a hair holding member facing the cutting edge of this blade, and a driving means for the blade, so that the cutting edge of the blade and the hair holding member are in contact with each other. The hair cutter is characterized in that it can be moved away from the hair cutter and is equipped with an interlocking switch that turns on and off the driving means in conjunction with the approaching and separating movements.