JPH0426876B2 - - Google Patents

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 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 provides a main body having a blade at its tip consisting of a comb-shaped fixed blade and a movable blade that are in sliding contact with each other, and a driving means for the blade, and a cutting edge of the blade attached to the main body at the tip of the main body. It consists of a hair holding member facing substantially parallel, and the cutting edge of the blade and the hair holding member can freely come into contact with and separate from each other,
It is characterized in that it is provided with an interlocking switch that turns on the driving means when approaching and turns off when moving away in conjunction with the approaching and separating movements. [Function] According to the present invention, the tip of the hair is inserted into the space between the cutting edge of the blade and the hair holding member facing the cutting edge,
When the blade and the hair holding member are brought close to each other, the hair is cut by the blade while being pressed onto the hair holding member, so the cutting edge does not come into contact with the skin, and the blade Because the drive is performed in conjunction with the movement of the blade and the hair holding member toward and away from each other, the movement of the blade stops when the tip of the hair is inserted into the space between the blade and the hair holding member. can be,
Therefore, 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 container body is composed of an upper housing 11 and a lower housing 12 which are connected by screws 19 shown in FIG.
As shown in FIGS. 2 and 3, a motor 5 is disposed inside, a slider 4 is disposed so as to be slidable back and forth, and a rotating body 6 is disposed inside 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 surface 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 biases the movable blade 22 toward the fixed blade 21;
A cam 23 fixed to the movable blade 22 locks one end of the board 20 to the upper housing 11, and locks springs 25, 25 shown in FIG. 4 attached to the lower housing 12 to the board 20. It is attached to the main body 1 by being locked. When installed in this manner, the eccentric shaft 52 protruding from the joint 51 fixed to the output shaft facing the front side of the motor 5 engages with the longitudinal groove portion of the cam 23,
As the motor 5 rotates, the movable blade 21 is driven back and forth. If the blade block 2 forms an angle θ of approximately 50 to 90° with respect to the longitudinal direction of the main body 1, visual confirmation when cutting hair becomes easier. A slider 4, which is slidably arranged inside the main body 1, is attached so as to straddle the motor 5, and has a switch handle 41 exposed on one side of the main body 1, and a switch handle 41 on both sides of the main body 1. It has a pair of locking protrusions 42, 42 that protrude respectively, and has a click spring 43 that protrudes forward in the center, and further has a click spring 43 that protrudes toward the front as shown in FIG. It is provided with a protruding piece 44 which protrudes and has a lower surface to which the switch spring 70 is fixed. The click spring 43 is attached to the upper housing 1
A total of three clicks are applied to the slider 4 in the longitudinal direction by engagement with a click protrusion 15 provided on the inner surface of the slider 4 and shaped like an 8 as shown in FIG. 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 wobbling. The rotating body 6 disposed in the rear part of the main body 1 has a shaft portion 60 having connecting portions 62, 62 formed at both ends, respectively.
is supported by the upper and lower housings 11 and 12 so that it can rotate freely, and is rotated counterclockwise in FIG. is energized by The connecting portions 62 located on the outer side 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 the click springs 6.
3 and a bearing groove 65. Reference numeral 64 in the figure represents a tapered surface provided on the outer circumferential edge of the connecting portion 62 and the inner circumferential 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 compartment, and the battery 7 can be attached or removed using the notch 1 with the battery cover 13 removed.
6 makes it easier. Reference numeral 71 in FIG. 4 is attached to the lower housing 12 so as to be able to slide up and down, and
By engaging with the protrusion 61 provided in the
A switch board 72 is a switch spring attached to the switch board 71 which moves up and down as the rotating body 6 rotates, and is connected between a cathode terminal 76 connected to the cathode of the motor 5 and a switch contact plate 73. control the conduction of On the other hand, as the slider 4 moves back and forth, the switch spring 70 attached to the slider 4 maintains continuity between the cathode metal fitting 74 connected to the negative electrode of the battery 7 and the switch contact plate 73 and the cathode metal 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. 23rd circuit diagram
As shown in the figure. The switch spring 70 operates the main switch SW ₁ in the figure, and the switch spring 72 operates the interlocking switch.
It constitutes SW ₂ . 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 has connecting portions 36, 36 at the rear ends of both side walls, and a bottom wall connecting the both side walls. There is a partition 32 near the front, and a comb part 31 lined with teeth on the tip edge of the bottom wall, the thickness a of which is much smaller than the height b, as shown in FIG. It has an anti-slip rib 33 and an anti-slip protrusion 34. As shown in FIG. 5, L-shaped locking 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 parts 36, 36 facing each other
is rotatably connected to the connecting parts 62, 62 of the rotating body 6, and includes a cylindrical shaft 38 that is received in a bearing groove 65 of the connecting part 62, and a click protrusion 37 that engages with the click spring 63. 11, 14, and 1 which are in contact with the side wall of the connecting portion 62
The engagement wall 3A shown in FIG. 7 is provided. and,
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. Thus, the spring 65 biases the rotating body 6 against the hair holding member 3 as well. In this hair cutter, when the slide switch 41 is positioned at the rearmost position, the main switch SW ₁ is turned off, and when the slide switch 41 is moved rearward, the main switch SW 1 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 that moves together with the slide switch 41 will hold the hair. In order to fit into the lock groove 35 on the inner surface of the member 3, as shown in FIGS. 9 to 12,
The above state is maintained. And in this state,
The cutting edges of the fixed blade 21 and the movable blade 22, both of which are comb-shaped, in the blade block 2 are connected to the comb portion 3 at the tip of the hair holding member 3.
1, and the cutting edge is protected. Note that the slide switch 41 is moved to the rear side first, and then the hair holding member 3 is released by the spring 6.
Even if the lower part of the main body 1 is fitted into the hair holding member 3 by rotating against the locking protrusion 4 due to the elastic deformation of both side walls of the hair holding member 3.
2 engages with the lock groove 35, the same condition as in the above case occurs. 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 come out of the locking groove 35, so that it will be biased by the spring 65 and will be removed from the lower housing. As the rotating body 6 rotates until it comes into contact with the inner surface of the body 12, the hair holding member 3 also rotates, and as shown in FIGS.
Open until it forms a 15° angle. 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 SW ₁ is in a state where the cathode metal fitting 74 and the switch contact plate 73 are brought into electrical continuity. However, since the interlocking switch _SW2 is turned off by the rotation of the rotating body 6, the motor 5 does not rotate in this state. Hair is usually cut in this state. That is, grasp the main body 1 and the hair holding member 3 by placing your thumb on the recess 14 on the upper surface of the main body 1, and insert the blade between the fixed blade 21 and the movable blade 22 with a required gap between them. 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 in an opposing state. Since the motor 5 is stopped and the movable blade 22 is not moving, hair can be easily introduced. After introducing the hair, if the hair holding member 3 is rotated with respect to the main body 1 against the spring 65 by grasping 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 caught between the blade tips and the hair holding member 3 that approach each other is cut by the blade and protrudes from the bottom surface of the main body 1. The cut hair debris accumulates in the space in front of the battery storage section, that is, in the hair debris storage section 30 between the partition 32 and the comb section 31 in the hair holding member 3. Although the hair is cut using a comb-shaped fixed blade 21 and a movable blade 22, the hair can be cut as if using scissors. The reason why the tip side of the hair holding member 3 is an oblique surface that draws a smooth curve and approaches the main body 1 side is as follows.
This is because it conforms to the curved shape of a person's collared foot, thereby making 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 blade block 2 are such that, as is clear from FIG. state, and if this step dimension is d, then
Since the comb portion 31 is provided so as to protrude toward the blade side by a height c that is larger than this step b, the tip of the fixed blade 21 faces the root side of the comb portion 31 of the hair holding member 3 at an angle of approximately 70 to 90 degrees. When touching at α, the comb part 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.
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. This makes it even easier to cut. In addition, if the above angle α is 70° or less, the movable blade 2
2 may slip on the hair,
It becomes difficult to cut well. In addition, the anti-slip protrusion 34 provided at the rear end of the hair holding member 3 facilitates secure holding and prevents the body 1 from rotating in the hand or from falling. prevent. When the slide switch 41 is moved further forward, the main switch SW ₁ establishes conduction between the cathode metal fitting 74 and the cathode terminal 76 and switches the interlocking switch SW _{2 .}
In order to bypass the motor 5, the motor 5 continues to rotate regardless of whether the interlock switch SW ₂ is on or off. This mainly applies to the hair holding member 3 described below.
Used when cutting hair without using a That is, if the hair holding member 3 is moved in the direction of further opening with respect to the main body 1 against the engagement between the click protrusion 37 and the click spring 63 of the rotating body 6,
The hair holding member 3 which has been disengaged from the rotating body 6 is in 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. Open until it forms a 120° angle. By utilizing this state, as shown in FIG. 22, it is possible to cut hair in areas where the presence of the hair holding member 3 would be an obstacle, for example around the ears. Note that the tapered surfaces 6 formed on the connecting parts 62 and 36 of the rotating body 6 and the hair holding member 3, respectively,
4 and 39 face 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 hair holding member 6 easily comes off from the main body 1. I'll make sure it's gone. This prevents the hair holding member 3 and the connecting parts 62, 36 from being damaged due to overload. As shown in FIG. 18, the battery 7 can be 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 the presence of the notch 16 can be replaced. Therefore, it can be done easily. Furthermore, as is clear from this figure, since the amount of overlap between the battery cover 13 and the main body 1 is increased, hair debris overflowing from the hair debris storage section 30 of the hair holding member 3 enters the battery storage section. There is no such thing. Note that in order to allow the hair holding member 3 and the cutting edge of the blade to face each other so that they can move toward and away from each other, the hair holding member 3 is shown here as being rotatably attached to the main body 1, but the present invention is not limited to this. The hair holding member 3 can be moved toward and away from the main body 1 by sliding it, or the hair holding member 3 can be moved toward and away from the main body by being fixed and the blade block 2 movable. It may be hot.

【Effect 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 this blade, so that the cutting edge of the blade and the hair holding member are in contact with each other. Since the blade is releasable, 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 placed on the hair holding member. The blade cuts while being pressed, and since the hair holding member is located between the blade tip and the skin, the blade tip does not come into contact with the skin.
Therefore, it can be used safely even for young children, and it can reliably cut hair straight.Moreover, the blade driving means moves the blade and the hair holding member toward and away from each other. Since it is turned on and off by an interlocking switch that is linked to When inserting the tip of the hair into the blade, the movement of the blade stops, making it easier to introduce the hair.Compared to the blade that is constantly driven, it saves energy and can be powered by batteries. This is suitable for use in applications where a long lifespan can be achieved.

[Brief explanation of drawings]

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. FIG. 5 is an exploded perspective view of the same as above; FIG. 5 is a front view showing the locking groove on the inner side surface of the hair holding member;
The figure is a perspective view of the comb portion of the hair holding member, Fig. 7 is a front view of the click protrusion, Fig. 8 a and b are plan and rear views, and Figs. A perspective view, a side view, a broken side view, and a sectional view,
13 to 15 are a side view, a cutaway side view, and a cross-sectional view showing the hair holding member in the cutting standby position, and FIGS. 16 to 18 are side views showing the hair holding member in a retracted state. A broken side view and an exploded side view, FIGS. 19a and 19b are a side view and a broken side view showing the state of use, FIGS. 20a and b are a side view and a broken side view showing the same state of use, and FIGS. 21a, b is an enlarged sectional view 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, in which 1 is the main body, 2 is the blade block, 3 is the hair holding member, and 21 is the same as the above. fixed blade,
22 is a movable blade, and SW ₂ is an interlocking switch.

Claims (1)

[Claims] 1. A main body that is equipped with a blade consisting of a comb-shaped fixed blade and a movable blade that are in sliding contact with each other at the tip and is provided with a means for driving this blade, and a main body that is attached to the main body and faces substantially parallel to the cutting edge of the blade at the tip of the main body. The cutting edge of the blade and the hair holding member are movable toward and away from each other, and an interlocking switch is provided which turns on the driving means when approaching and turns off when moving away in conjunction with this moving toward and away from the hair holding member. A hair cutter that is characterized by: