JPH0621581U - Electric hair cutter - Google Patents

Abstract

(57) [Abstract] [Purpose] The blade unit is easy and secure to attach and detach, and the moving blade and slider are also easily and surely connected, and the electric blade is improved to reduce vibration of the moving blade. Provide a hair cutter. [Structure] A front end portion of a slider unit case 6 is protruded from a front portion of a body portion 2, and a male screw portion 6b and a pressing protrusion 6c are provided on an outer peripheral portion of the protruded portion. The front end of the slider 8 is always exposed from the front end of the slider unit case 6, and a groove 8b having a cross-sectional shape with a wide rear is provided therein. At the base end of the moving blade 34 of the blade unit 28, a pin-shaped portion 46 having a head portion 46a detachably fitted in the groove 8b is provided. Further, the cap 30 of the blade unit 28 is provided with the female screw portion 30b which is screwed with the male screw portion 6b of the slider unit case 6, and the blade unit 28 can be attached to and detached from the front portion of the body portion 2 by screwing both screw portions. I attached it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric hair cutter used for hairdressing (barber) and beauty hair (beauty).

[0002]

[Prior art]

 An electric haircutter that can be used like manual scissors has been previously proposed by the same applicant (see, for example, Japanese Utility Model Publication No. 2-43336).

Explaining an example thereof with reference to FIG. 4, this electric hair cutter includes a body portion 2 and a front portion of the body portion 2 which is coaxial with the body portion 2 as indicated by an arrow E. The slider unit 4 is rotatably housed and has a slider 8 that can reciprocate (slide) in the slider unit case 6 as shown by arrow C, and the slider unit 4 housed in the body 2 is shown by arrow C. The motor 18 for reciprocating, the handle 24 attached to the body 2 and having a finger hole 24a for inserting a finger, the cap 30, the elongated stationary blade 32, and the elongated moving blade 34. A blade unit 28 that is detachably (replaceable) attached to the front portion of the body portion 2 is provided, and the overall shape is similar to manual scissors.

In order to improve usability, the handle portion 24 has a variable angle as indicated by an arrow H in this example. The slider unit 4 can be rotated by a packing 26 with an appropriate hardness as shown by an arrow E.

In the slider unit case 6, a pin 10, a U-shaped cam 12 which is rotatably supported as indicated by an arrow B, and a pin 14 which connects the end of the cam 12 to the end of the slider 8 are provided. The cam 12 is combined with an eccentric pulley 16 on which a rotary shaft 18a of a motor 18 is eccentrically attached, and in this example, the slider 8 is driven by such a mechanism and the motor 18. An electric drive unit that reciprocates as shown by arrow C is configured. When the rotary shaft 18a of the motor 18 is rotated, for example, as indicated by A, the eccentric pulley 16 is rotated back and forth around the pin 10 as a fulcrum as indicated by an arrow B, whereby the slider 8 is linearly reciprocated as indicated by an arrow C. To do. Reference numeral 20 is a switch, and 22 is a power cable.

In the blade unit 28, the stationary blade 32 has its root fixed to the cap 30 and has a large number of cutting teeth 32 a along one long side thereof. The moving blade 34 cooperates with the stationary blade 32, and is reciprocally stacked on the stationary blade 32 as shown by an arrow D, and has a large number of cutting teeth 34a along one long side thereof. In addition, the base side penetrates the cap 30 and is detachably coupled to the slider 8 of the slider unit 4. The moving blade 34 is moved back and forth as indicated by arrow D by the reciprocating movement of the slider 8 as indicated by arrow C.

A groove 2 a is provided around the tip of the body portion 2, and a ridge 30 a that fits into the groove 2 a is provided inside the opening end of the cap 30.

A method of mounting the blade unit 28 will be described with reference to FIG. 5 as well. A recess 8a is provided at the tip of the slider 8 and a claw 34b for hooking the recess 8a is provided at the base end of the moving blade 34. As shown by arrow F, the claw 34b is inserted into the recess 8a of the slider 8 in the tip 6a of the slider unit case 6 and hooked, and the cap 30 is pushed toward the body 2 in that state. Then, the groove 2a is fitted into the protrusion 30a.

Since the slider unit 4 is rotatable, the blade unit 28 is rotated in the direction of arrow E so that the cutting teeth 32a and 34a of both blades 32 and 34 are oriented in arbitrary directions. It is possible to use it in the state, and this makes it easy to use.

An example of cutting hair using this electric hair cutter is as follows. Like the case of holding manual scissors, the ring finger of one hand of the user is passed through the finger hole 24a and the handle 24 Hold the electric haircutter in the desired orientation by grasping the part from the to the body 2. Then, with the switch 20 turned on and the moving blade 34 reciprocating, simply apply the cutting teeth 32a, 34a of both blades 32, 34 to the portion of the hair to be cut automatically. Hair is cut. In that case, as in the case of using the manual scissors, a comb held in the other hand may be attached if necessary.

[0011]

[Problems to be solved by the device]

 However, when a prototype of the above-described electric hair cutter is used, the blade unit 28 is attached to the front portion of the body 2 and the structure of the portion connecting the moving blade 34 and the slider 8 is as follows. I found that there was such a problem.

As can be seen from FIG. 5, since the tip of the slider 8 is located inside the tip 6a of the slider unit case 6, the recess 8a is difficult to see, and the stop position of the slider 8 is indefinite. Therefore, since the slider unit 4 can be further rotated as shown by the arrow E, it is difficult to insert the claw 34b at the base end of the moving blade 34 into the recess 8a at the tip of the slider 8 and hook it, making it easy for anyone. It is hard to say that you can do it.

Since the claw 34 a at the base of the moving blade 34 is simply put in the recess 8 a of the slider 8 and hooked, the moving blade 34 may float during use and the engagement between the two may be disengaged.

There is looseness between the moving blade 34 and the slider 8, and the moving blade 34 floats or hits the slider 8 during use, so that the horizontal vibration of the moving blade 34 in use is large and noise is generated. Noisy. However, if the claws 34b of the moving blade 34 are fitted tightly in the recesses 8a of the slider 8, there will be no room, and the work of engaging the two will become more difficult.

In the structure in which the protrusion 30a of the cap 30 is fitted into the groove 2a of the body portion 2, it is difficult to remove it once it is fitted. On the contrary, if the fitting is loose, the blade unit 28 is likely to come off during use.

In view of the above, the present invention provides an electric hair dryer in which the blade unit can be easily and securely attached and detached, and the moving blade and the slider can be easily and securely connected, and the vibration of the moving blade can be reduced. The main purpose is to provide a cutter.

[0017]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the electric hair cutter of the present invention is configured such that the tip of the slider unit case is pushed out from the front of the body and a male screw portion and one or more external threads are provided on the outer periphery of the exposed portion. A pressing protrusion is provided so that the slider tip is always exposed from the tip of the slider unit case, and a groove with a widened cross section is formed at the always exposed portion of the slider tip. Provided at the root-side end of the moving blade of the blade unit is a pin-shaped portion having a head removably fitted in the groove at the tip of the slider, and the opening end of the blade unit cap. A special feature is that a female screw part that is screwed into the male screw part of the slider unit case is provided inside, and the blade unit is detachably attached to the front part of the body part by screwing both screw parts. To.

[0018]

[Action]

 According to the above structure, when attaching the blade unit, the pin-shaped part at the base end of the moving blade is fitted into the groove of the slider tip exposed from the slider unit case tip, and then the cap is attached in that state. Just screw it into the slider unit case. At this time, if necessary, if the pressing protrusion of the slider unit case is pressed with a finger, the slider unit does not rotate in the body portion, so that the blade unit can be attached more easily. To remove the blade unit, reverse the above procedure.

[0019]

Embodiment FIG. 1 is a view showing an electric hair cutter according to an embodiment of the present invention. FIG. 2 is a diagram showing how to install the blade unit of the electric haircutter of FIG. The same or corresponding portions as those of the conventional example shown in FIGS. 4 and 5 are designated by the same reference numerals, and the differences from the conventional example will be mainly described below.

In this embodiment, the front end of the slider unit case 6 as described above is exposed from the front of the body 2, and the external thread portion 6b is provided on the outer peripheral portion of the exposed portion. . Further, two presser projections 6c are provided on the outer peripheral portion of the projecting portion so as to project somewhat further than the body portion 2 and the cap 30 of the blade unit 28 so as to face each other in this example.

Further, from the tip of the slider unit case 6, the tip of the slider 8 as described above is always exposed (that is, regardless of its reciprocating position) through the through hole 6 d provided therein. I am trying to do it. The through hole 6d is shaped and shaped so that the slider 8 can pass through it exactly. The slider unit case 6, the slider 8 and the cap 30 of the blade unit 28 are made of resin, for example.

Instead of providing a concave portion 8a as in the conventional example, a groove 8b having a cross-sectional shape that widens rearward is formed in the longitudinal direction (that is, the forward and backward movements) in the exposed portion of the slider 8 at all times. (Orthogonal to the direction). The cross-sectional shape of the portion around the groove 8b is approximately C-shaped.

Further, instead of providing the claw 34b as in the conventional example at the root side end of the moving blade 34 of the blade unit 28 as described above, it is detachably fitted into the groove 8b at the tip of the slider 8. A pin-shaped portion 46 having a disk-shaped head portion 46a is provided. The pin-shaped portion 46 is made of resin, for example, and is fixed to the base end of the moving blade 34. The head 46a may be spherical.

Further, inside the opening end of the cap 30 of the blade unit 28, instead of providing the protrusion 30a as in the conventional example, a female screw portion 30b to be screwed with the male screw portion 6b of the slider unit case 6 is provided. Therefore, the blade unit 28 is detachably attached to the front portion of the body portion 2 by screwing the two screw portions 6b and 30b together.

FIG. 3 is an enlarged view of the blade portion of FIG. 1 viewed in the direction of arrow P. As a method of supporting the stationary blade 32 and the like from the cap 30, as described in the conventional example and as disclosed in the above-mentioned Japanese Utility Model Publication No. 2-43336, the root end of the stationary blade 32 is used. May be fixed to the cap 30, and the moving blade 34 may be reciprocally laid on the stationary blade 32. However, in this embodiment, the fixing strength of the stationary blade 32 is increased by a simple structure. Further, the blade case 36 is used.

That is, the blade case 36 is made of resin, the root of which is fixed to the resin cap 30, and the stationary blade 32 is fixed to the blade case 36. The blade case 36 is provided with a ridge 36a along the long side opposite to the cutting teeth of the stationary blade 32 and the like. It is fixed by means of a screw 40, so that a gap 44 corresponding to the thickness of the moving blade 34 is formed between the stationary blade 32 and the backing plate 42. A side of the cutting tooth 34 opposite to the cutting tooth 34a is inserted to prevent the lifting of the cutting tooth 34a and guide the reciprocating movement as indicated by an arrow D in FIG. The moving blade 34 is provided with a long hole (not shown) at a position corresponding to each screw 40 to allow the sliding of the moving blade 34. The pad 42 is provided in this example in order to avoid direct friction between the pressing plate 38 and the metal moving blade 34, which is also made of resin.

According to the electric hair cutter, when the blade unit 28 is attached to the front portion of the body portion 2, the pin-shaped portion 46 at the base end of the moving blade 34 is indicated by an arrow G in FIG. In this way, the slider unit case 6 is fitted into the groove 8b at the tip of the slider 8 exposed from the tip, and in that state, the female screw portion 30b of the cap 30 is screwed into the male screw portion 6b of the slider unit case 6. . At this time, if necessary, if the pressing projection 6c of the slider unit case 6 is pressed with the finger of the hand on the side opposite to the side where the cap 30 is screwed in, the slider unit 4 will not rotate within the body 2. In addition, since the pin-shaped portion 46 rotates in the groove 8b of the slider 8 as the cap 30 is screwed in, the blade unit 28 can be attached more easily. When removing the blade unit 28, the procedure reverse to the above may be performed.

Moreover, according to the above structure, the following effects can be obtained.

As can be seen from FIG. 2, the tip of the slider 8 is always exposed from the tip of the slider unit case 6 regardless of the position where the slider 8 is stopped, and the groove 8b at the tip is sufficiently exposed. Since the slider unit 4 including the slider unit case 6 and the slider 8 cannot be rotated in the body 2 if the pressing protrusion 6c is pressed with a finger, the pin-shaped portion 46 at the base end of the moving blade 34 can be seen. It can be extremely easily fitted into or removed from the groove 8b of the slider 8 as shown by an arrow G.

Since the pin-shaped portion 46 having the head portion 46 a is fitted into the groove 8 b of the slider 8 having a broadened rear surface, the moving blade 34 and the slider 8 are joined together. The connection between the two is secure and there is no risk of this connection breaking during use.

Since the pin-shaped portion 46 having the head portion 46 a is fitted into the groove 8 b of the slider 8 having a widened rear surface, the moving blade 34 is not moved during use as in the conventional example. It does not float or hit, so that the moving blade 34 during use is less laterally oscillated and the sound is quieter. Even if the pin-shaped portion 46 is fitted in the groove 8b exactly, the groove 8b is always exposed as described above, so that the work of connecting the two is easy.

Since the cap unit 30 is screwed into the male screw portion 6b of the slider unit case 6 to attach / detach the blade unit 28, when the attaching / detaching is performed, the pressing protrusion 6c is pressed with a finger to prevent the slider unit 4 from rotating. Since it can be stored, the blade unit 28 can be easily attached and detached, and there is no fear that the blade unit 28 will come off during use.

In the structure of the conventional slider unit 4, as can be seen from FIG. 5, a large gap for inserting the moving blade 34 is required between the inner wall of the tip portion 6 a of the slider unit case 6 and the slider 8. There is a fear that dust and hair may get into the inside of the slider unit 4 and further the inside of the body portion 2 from there, and this may cause a malfunction. However, in the structure of the slider unit 4 of the present invention, as shown in FIG. As can be seen from the above, the structure is such that the tip of the slider 8 is exposed from the slider unit case 6, and between the through hole 6d provided in the slider unit case 6 and the slider 8 there is only a small amount such that the slider 8 can reciprocate. It is sufficient if there is a large gap, and grease or the like can be applied there, so from there, Internal risk entering dust or hair parts 2 is small, thus a failure or the like is also reduced.

The electric drive means for reciprocating the slider 8 is other than the above-mentioned example, for example, a motor as disclosed in the above-mentioned Japanese Utility Model Publication No. 2-43336 and a rotary shaft thereof. The bevel gear, the bevel gear that meshes with the bevel gear, the eccentric pin that is erected on the bevel gear, and the elongated hole that is provided at the base of the slider and that accommodates the eccentric pin may be used. Further, the motor may be driven by a battery.

[0035]

[Effect of device]

 As described above, according to this invention, the following various effects can be obtained.

Since the blade unit cap is screwed into the slider unit case to attach / detach the blade unit, and when attaching / detaching, the pressing protrusion can be pressed with fingers to prevent the slider unit from rotating. The blade unit can be easily attached and removed, and there is no risk of the blade unit coming off during use.

Since the tip of the slider is always exposed from the slider unit case and its groove is fully visible, and if the pressing protrusion is pressed with your finger, the slider unit will not rotate inside the body, The pin-shaped part at the base end can be fitted into or removed from the groove of the slider very easily, and therefore the moving blade and the slider can be easily connected and removed.

Since the pin-shaped portion having the head portion is fitted into the groove of the slider, which has a cross-sectional shape with a widened rear portion, the moving blade and the slider are connected to each other. , There is no risk of this bond breaking during use. For the same reason, the horizontal vibration of the moving blade during use is small and the sound is quiet.

The structure is such that the tip of the slider is exposed from the slider unit case, and it is sufficient if there is a slight gap between the through hole provided in the slider unit case and the slider. Dust and hair are less likely to enter the inside of the body and the torso, and therefore less likely to malfunction.

[Brief description of drawings]

FIG. 1 is a view showing an electric hair cutter according to an embodiment of the present invention.

FIG. 2 is a diagram showing how to install the blade unit of the electric hair cutter of FIG.

3 is an enlarged view of the blade portion of FIG. 1 viewed in the direction of arrow P. FIG.

FIG. 4 is a diagram showing an example of a conventional electric hair cutter.

5 is a view showing how to install the blade unit of the electric hair cutter shown in FIG.

[Explanation of symbols]

 2 Body part 4 Slider unit 6 Slider unit case 6b Male screw part 6c Holding protrusion 8 Slider 8b Groove 18 Motor 24 Handle part 28 Blade unit 30 Cap 30b Female screw part 32 Static blade 34 Moving blade 46 Pin-shaped part

Claims (1)

[Scope of utility model registration request] 1. A body portion, a slider unit that is housed in a front portion of the body portion so as to be rotatable coaxially with the body portion, and has a slider that can reciprocate in a slider unit case; Section and a slider unit case, and an electric drive means for reciprocating the slider, a handle portion attached to the body portion and having a finger hole for inserting a finger, and a body portion of the body portion. A cap detachably attached to the front portion, an elongated stationary blade fixed to the cap, having a plurality of cutting teeth along one long side thereof, and an elongated slidably reciprocally stacked on the stationary blade. A blade having a moving blade, which has a large number of cutting teeth along one long side thereof, a base side of which penetrates the cap and is detachably coupled to a slider of a slider unit. In an electric haircutter including a unit, the tip of the slider unit case is pushed out from the front of the body, and a male screw portion and one or more pressing protrusions are provided on the outer peripheral portion of the exposed portion. Make sure that the slider tip is always exposed from the tip of the slider unit case, and provide a groove with a cross-section that widens backward at the always-exposed portion of the tip of the slider. A pin-shaped portion having a head portion that is detachably fitted in the groove of the tip portion of the slider is provided at the end portion on the root side of the blade, and the slider unit case is provided inside the opening end portion of the blade unit cap. A female screw portion that is screwed with the male screw portion is provided, and the blade unit is detachably attached to the front portion of the body portion by screwing both screw portions. Cutter.