JP6016023B2 - Hair clipper blade and clipper with clipper blade - Google Patents

Description

  The present invention relates to a clipper blade including a fixed blade and a movable blade, and a clipper including the clipper blade.

  As a clipper blade for cutting human or animal hair, it has a fixed blade having a plurality of blades and a movable blade having a plurality of blades, and the movable blade reciprocates with respect to the fixed blade. It is known that it has been superimposed as possible.

This type of clipper requires that the hair be cut short without damaging the skin.
In response to such a request, a technique described in Patent Document 1 is known. In the clipper blade described in Patent Document 1, the fixed blade and the movable blade are overlapped so that the tip of the blade of the fixed blade and the tip of each blade of the movable blade are in sliding contact with each other. Moreover, both the front-end | tip part of a fixed blade and the front-end | tip part of a movable blade are formed in the curved surface. Thereby, damage to the wound is suppressed.

  Patent Document 2 discloses a clipper blade in which a resin is applied to the tip of the fixed blade and the tip of the movable blade. That is, the tip portions of the fixed blade and the movable blade are formed into curved surfaces by application of resin. Thereby, the damage of the skin which arises when a front-end | tip part rubs against skin is suppressed.

Japanese Unexamined Patent Publication No. 55-101286 JP-A-2-41353

  By the way, the technologies of the two patent documents listed above have the following problems. In the technique of Patent Document 1, when the movable blade is slid with the tip of the clipper blade pressed against the skin, the skin is sandwiched between the tip of each of the fixed blade and the movable blade. May be damaged.

  In the technique of Patent Document 2, when resin is applied to the tip portions of the fixed blade and the movable blade, the resin may adhere to the sliding contact surface of the fixed blade or the sliding contact surface of the movable blade. As described above, when the resin adheres to the sliding contact surface of the fixed blade or the sliding contact surface of the movable blade, the hair cutting ability is lowered, and thus it is necessary to remove the attached resin.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a clipper blade having a low possibility of damaging the skin and excellent in manufacturability, and a clipper provided with the clipper blade. It is in.

  A first embodiment of a clipper blade according to the present invention includes a fixed blade having a plurality of blade bodies and a movable blade having a plurality of blade bodies arranged in the same direction as the arrangement of the blade bodies of the fixed blade. Each of the blades of the movable blade has a cutting portion formed with a movable slidable contact surface in contact with the fixed blade, and a blade body tip provided on the tip side of the cutting portion, The inner surface of the tip of the blade body of the movable blade is closer to the movable blade than the plane including the movable sliding contact surface, and the blade body of the movable blade is formed with cutting blade portions on both side surfaces. The cutting edge portion of the cutting blade portion provided at the tip of the blade body is formed or chamfered into a curved surface.
  The second form of the clipper blade according to the present invention comprises a fixed blade having a plurality of blades and a movable blade having a plurality of blades arranged in the same direction as the arrangement of the blades of the fixed blade. Each of the blades of the movable blade has a cutting portion formed with a movable slidable contact surface in contact with the fixed blade, and a blade body tip provided on the tip side of the cutting portion, The inner surface of the blade body tip of the movable blade is closer to the movable blade than the plane including the movable sliding contact surface, and the blade body tip of the movable blade is continuous with the inner surface and the inner surface. And a front end point on a boundary line between the inner surface and the outer surface of the front end portion of the blade body of the movable blade is formed between the upper surface of the front end portion of the blade body and the movable slide. The distance between the tip point and the upper surface is a distance between the tip point and the movable sliding contact surface. Ri is also large.
  A third embodiment of the clipper blade according to the present invention includes a fixed blade including a plurality of blade bodies, and a movable blade including a plurality of blade bodies arranged in the same direction as the direction in which the plurality of blade bodies are arranged. The blade body of the movable blade includes a cutting portion having a movable sliding contact surface that is in sliding contact with the fixed blade, and an inner surface that is provided closer to the distal end side of the movable blade than the cutting portion and is continuous with the movable sliding contact surface. The blade body of the fixed blade is provided on the distal end side of the fixed blade with respect to the cutting portion having a fixed sliding contact surface that is in sliding contact with the movable blade, and the cutting blade, A blade body tip portion having an inner surface continuous with the fixed sliding contact surface, and the most advanced point of the blade body tip portion of the fixed blade and the most distal point of the blade body tip portion of the movable blade are the fixed blade and the movable It substantially matches in the front-rear direction of the blade, and the inner surface of the tip of the movable blade includes the movable sliding contact surface. Than the surface provided on the movable blade side, the tip end edge of the movable sliding contact surface in the longitudinal direction is provided on the rear side than the tip end edge of the fixed sliding contact surface.
  According to the above clipper, when the blade of the movable blade and the blade of the fixed blade approach each other and the space between the two blades becomes narrow, the blade tip of the blade of the movable blade and the blade of the fixed blade A gap is provided between the body tip portion. For this reason, the sandwiching of the skin by both the blades is suppressed, and the skin damage is suppressed.

  The clipper blade and clipper of this hair clipper are less likely to damage the skin and are excellent in manufacturability.

The perspective view of the clipper of an embodiment. The perspective view of the head part of FIG. The top view of the head part of FIG. The side view of the head part of FIG. The enlarged view of the fixed blade and movable blade of FIG. The enlarged view of the fixed blade and movable blade of FIG. The enlarged view of the fixed blade and movable blade of FIG. The enlarged view of the A section of FIG. Sectional drawing of the BB line of FIG. Sectional drawing of the CC line | wire of FIG. The schematic diagram which shows the relationship between the blade of the clipper of FIG. 2, and skin. The schematic diagram which shows the relationship between the blade of the conventional clipper and skin. The schematic diagram which shows the relationship between the blade of the clipper of FIG. 2, and skin. The side view which shows the 1st modification of a movable blade and a fixed blade. The side view which shows the 2nd modification of a movable blade and a fixed blade. The side view which shows the 3rd modification of a movable blade and a fixed blade. The side view which shows the 4th modification of a movable blade and a fixed blade. The side view which shows the 5th modification of a movable blade and a fixed blade.

  (An example of the shape that the clipper and its blade can take)
  [1] The first embodiment of the clipper blade according to the present invention is a movable blade having a fixed blade having a plurality of blades and a plurality of blades arranged in the same direction as the blades of the fixed blades. Each of the blades of the movable blade includes a cutting portion formed with a movable sliding contact surface in contact with the fixed blade, and a blade body tip provided on the tip side of the cutting portion. An inner surface of the distal end portion of the movable blade is closer to the movable blade than a plane including the movable sliding contact surface, and the blade body of the movable blade has a cutting blade portion on each of both side surfaces. The blade edge of the cutting blade portion provided at the tip of the blade body is formed into a curved surface or chamfered.
  [2] A second embodiment of the clipper blade according to the present invention is a movable blade having a fixed blade having a plurality of blades and a plurality of blades arranged in the same direction as the blades of the fixed blades. Each of the blades of the movable blade includes a cutting portion formed with a movable sliding contact surface in contact with the fixed blade, and a blade body tip provided on the tip side of the cutting portion. An inner surface of the blade body tip portion of the movable blade is closer to the movable blade than a plane including the movable sliding contact surface, and the blade body tip portion of the movable blade includes the inner surface and the inner surface. And a front end point on a boundary line between the inner surface and the outer surface of the blade tip portion of the movable blade is an upper surface of the blade tip portion. The distance between the tip point and the upper surface is between the tip point and the movable contact surface. Greater than the distance.
  [3] In the blade of the clipper according to [1] or [2], each of the blade bodies of the fixed blade includes a cutting portion formed with a fixed sliding contact surface in contact with the movable sliding contact surface, A blade body tip portion provided on the tip side of the cutting portion, and an inner surface of the blade body tip portion of the fixed blade is on the fixed blade side with respect to a plane including the fixed sliding contact surface.
  [4] The hair clipper blade according to [3], wherein a tip side edge of the movable sliding contact surface of the blade of the movable blade is a tip of the fixed sliding contact surface of the blade of the fixed blade. It is arrange | positioned rather than the side edge at the base part side of the said blade body of the said movable blade.
  [5] A third embodiment of the clipper blade according to the present invention is a movable blade including a fixed blade including a plurality of blades and a plurality of blades aligned in the same direction as the plurality of blades are aligned. And the blade body of the movable blade is provided with a cutting portion having a movable sliding contact surface that is in sliding contact with the fixed blade, and the distal end side of the movable blade with respect to the cutting portion. The blade body of the fixed blade includes a cutting edge having a fixed sliding contact surface that is in sliding contact with the movable blade, and a distal end side of the fixed blade from the cutting portion. A blade tip end portion having an inner surface continuous with the fixed sliding contact surface, wherein the tip end point of the tip end portion of the fixed blade and the tip end point of the tip end portion of the movable blade are the fixed blade. And the inner surface of the tip of the movable blade substantially coincides with the movable sliding surface. Than the plane including provided on the movable blade side, the tip end edge of the movable sliding contact surface in the longitudinal direction is provided on the rear side than the tip end edge of the fixed sliding contact surface.
  [6] An embodiment of the clipper according to the present invention includes the clipper blade according to any one of [1] to [5].

(Embodiment)
The clipper according to the embodiment will be described with reference to FIG.
As shown in FIG. 1, the clipper 1 includes a main body device 2 and a head unit 3 that can be attached to the main body device 2. The main body device 2 includes a drive mechanism 21, a power supply unit 22, a control unit 23 that controls the drive mechanism 21 and the power supply unit 22, and an operation unit 24.
The drive mechanism 21 reciprocates a movable part (movable blade 40 described later) of the head unit 3, and has an output shaft 21a for transmitting power. The drive mechanism 21 includes, for example, a motor and a power transmission mechanism that transmits power of the motor. The power supply unit 22 supplies power to the drive mechanism 21. The power supply part 22 is comprised by the secondary battery, for example. The operation unit 24 switches the operation state of the movable part between the operation state and the stop state.

The head unit 3 will be described with reference to FIGS.
As shown in FIG. 2, the head unit 3 includes a clipper blade 4, a fixed frame 50, a holding frame 51, and a pressing device 54. The clipper blade 4 includes a fixed blade 30 and a movable blade 40. The fixed blade 30 and the movable blade 40 are overlapped with each other. The movable blade 40 is provided so as to be able to reciprocate in a parallel direction (described later) with respect to the fixed blade 30.

  The fixed frame 50 supports the fixed blade 30 from the lower side (the side opposite to the side where the movable blade 40 is disposed in the fixed blade 30). The fixed frame 50 holds the fixed blade 30 so as not to be displaced with respect to the fixed frame 50.

  The holding frame 51 holds the movable blade 40 from the upper side (the side opposite to the side where the fixed blade 30 is disposed in the movable blade 40). The holding frame 51 holds the movable blade 40 so as not to be displaced with respect to the holding frame 51. The holding frame 51 has a plate 52 that is pressed against the movable blade 40. The plate 52 is provided with an engaging portion 53 that engages with the output shaft 21 a of the drive mechanism 21. As shown in FIG. 2, the engaging portion 53 is formed with a fitting portion 53a into which the output shaft 21a is fitted.

  The pressing device 54 presses the movable blade 40 and the plate 52 so that the fixed blade 30 and the movable blade 40 press each other. The pressing device 54 has, for example, a structure in which two torsion springs 54a and 54b (see FIG. 3) are connected. The pressing device 54 is attached to the fixed frame 50 so that the end portions 54c and 54d of the torsion springs 54a and 54b press the plate 52 and the movable blade 40 toward the fixed blade 30 side.

With reference to FIG. 4, the arrangement of the components of the head unit 3 will be described.
In the description of the head unit 3, the direction from the fixed blade 30 toward the movable blade 40 is referred to as “upward”, and the arrangement in the upward direction when viewed from a predetermined one is referred to as “upper side”. The direction opposite to the upward direction is referred to as “downward direction”, and the arrangement of the downward direction as viewed from a predetermined object is referred to as “lower side”.

  A fixed blade 30 is disposed on the upper side of the fixed frame 50. A movable blade 40 is disposed above the fixed blade 30. The movable blade 40 is held by a holding frame 51. The plate 52 of the holding frame 51 is disposed above the movable blade 40. Ends 54c and 54d of the torsion spring (pressing device 54) are arranged on the upper side of the plate 52 and push the plate 52 downward. With such a structure, the movable blade 40 is pressed toward the fixed blade 30 side.

With reference to FIG.5 and FIG.6, the structure of the fixed blade 30 is demonstrated.
In the following description, in the direction (front-rear direction) in which the blade body 32 (see FIG. 6) extends, an object or portion close to the tip of the blade body 32 is said to be on the “tip side”.

  The fixed blade 30 has a plate-shaped main body 31 (see FIG. 2) and a plurality of blade bodies 32 extending from the main body 31. The blade bodies 32 are arranged in a line at substantially constant intervals. The direction in which the blade bodies 32 are arranged is referred to as a “parallel direction”.

The blade body 32 includes a base portion 33 (see FIG. 6) that extends from the main body portion 31, a cutting portion 34 that extends further from the base portion 33, and a blade body front end portion 35 that extends further from the cutting portion 34.
The cutting part 34 is formed with a fixed sliding contact surface 34 a (see FIG. 7) that is in sliding contact with the movable blade 40. As shown in FIG. 6, the cutting part 34 is formed to be tapered in a plan view. That is, the lateral width (length in the parallel direction) of the cutting part 34 is gradually reduced toward the tip side.

With reference to FIG.5 and FIG.6, the structure of the movable blade 40 is demonstrated.
The movable blade 40 includes a plate-like main body 41 (see FIG. 2) and a plurality of blade bodies 42 extending from the main body 41. The blade bodies 42 are arranged in a line at substantially constant intervals. When the movable blade 40 is assembled so as to overlap the fixed blade 30, the direction in which the blade bodies 42 are aligned matches the direction in which the fixed blades 30 are aligned (parallel direction).

  The blade body 42 includes a base portion 43 (see FIG. 6) extending from the main body portion 41, a cutting portion 44 extending from the base portion 43, a blade tip portion 45 extending further from the cutting portion 44, and a cutting blade portion 48 (FIG. 9). Reference). The cutting blade portion 48 is provided from the cutting portion 44 to the blade tip portion 45 on each of the side surfaces 42 b of the blade body 42. 5 and 6, the cutting portion 44 is not shown.

The base 43 is bent so as to be inclined with respect to the main body 41 (see FIG. 5). The cutting part 44 is formed so as to be substantially parallel to the main body part 41.
The cutting portion 44 is formed with a movable slidable contact surface 44 a (see FIG. 7) that slidably contacts the fixed blade 30. The length of the movable sliding contact surface 44a in the front-rear direction is shorter than the length of the fixed sliding contact surface 34a of the cutting portion 34 of the fixed blade 30 (see FIG. 7). The cutting part 44 is formed to be tapered in plan view. That is, the lateral width (length in the parallel direction) of the cutting portion 44 is gradually reduced toward the distal end side.

The interval (pitch) between the blade bodies 42 of the movable blade 40 and the interval (pitch) between the blade bodies 32 of the fixed blade 30 are different from each other for the following reason.
If the distance between the blade bodies 32 of the fixed blade 30 and the distance between the blade bodies 42 of the movable blade 40 are equal, each set of blade bodies that come into sliding contact with each other (the blade body 32 of the fixed blade 30 and the blade body of the movable blade 40). 42) In each case, the timing for cutting the hair is the same. As a result, when a large number of hairs enter between the blade bodies 32, 42, it becomes necessary to cut the large number of hairs simultaneously. In order to realize this, it is necessary to increase the power of the motor. On the other hand, there is a limit to increasing the power of the motor because of the size requirement of the main unit 2. For this reason, the interval (pitch) between the blades 32 of the fixed blade 30 and the interval (pitch) between the blades 42 of the movable blade 40 are different for the purpose of avoiding simultaneous cutting of a large number of hairs. It is

With reference to FIG. 7, the structure (structure of the clipper blade 4) combining the fixed blade 30 and the movable blade 40 will be described.
The cutting portion 34 of the blade body 32 of the fixed blade 30 and the cutting portion 44 of the blade body 42 of the movable blade 40 are in contact with each other so as to slide on each other.

  The most advanced point 32a of the blade body 32 of the fixed blade 30 and the most advanced point 42a of the blade body 42 of the movable blade 40 are substantially matched in the front-rear direction of the blade bodies 32, 42 in a side view. In the following description, the distance between the most distal point 32a of the blade body 32 of the fixed blade 30 and the most distal point 42a of the blade body 42 of the movable blade 40 in the front-rear direction is referred to as a “step”. In the example of FIG. 7, the step is set to approximately “0”.

The structure of the blade tip portions 35 and 45 will be described with reference to FIG. FIG. 8 is an enlarged view of a portion A in FIG.
The blade body tip portion 35 of the blade body 32 of the fixed blade 30 has an inner surface 36 facing the movable blade 40, an outer surface 37 formed continuously from the inner surface 36 and facing outward, and a side surface 32 s facing the adjacent blade body 32. And have. The outer surface 37 is formed in a curved surface.

  The inner surface 36 is formed continuously with the fixed sliding contact surface 34a and extends to the tip side. The inner surface 36 is formed flat and is inclined with respect to the fixed sliding contact surface 34a. Further, the inner surface 36 is disposed closer to the fixed blade 30 than the reference surface SK1 when a plane including the fixed sliding contact surface 34a is set as the reference surface SK1.

  The blade body tip 45 of the blade body 42 of the movable blade 40 has an inner surface 46 facing the fixed blade 30, an outer surface 47 formed continuously from the inner surface 46 and facing outward, and a side surface 42 s facing the adjacent blade body 42. And have. The side surface 42s constitutes a part of the side surface 42b of the blade body 42. The outer surface 47 is formed in a curved surface.

  The inner surface 46 is formed continuously with the movable sliding contact surface 44a and extends to the tip side. The inner surface 46 is formed in a plane and is inclined with respect to the movable sliding contact surface 44a. Further, the inner surface 46 is arranged closer to the movable blade 40 than the reference surface SK2 when a plane including the movable sliding contact surface 44a is set as the reference surface SK2.

  With the configuration of the two inner surfaces 36 and 46 having the above configuration, a clearance Sn is provided between the blade tip 35 of the blade 32 of the fixed blade 30 and the blade tip 45 of the blade 42 of the movable blade 40. Due to the presence of the gap Sn, the fixed sliding contact surface 34a and the movable sliding contact surface 44a are arranged on the back side (base 33, 43 side) from the tip of the clipper blade 4.

Moreover, the blade body front-end | tip part 45 of the blade body 42 of the movable blade 40 has the following structure.
The movable slidable contact surface 44 a of the blade body 42 of the movable blade 40 is provided on the back side (base 33 side) with respect to the fixed slidable contact surface 34 a of the blade body 32 of the fixed blade 30. That is, the front end side edge 44b of the movable slidable contact surface 44a is disposed on the back side (base 43 side) with respect to the front end side end edge 34b of the fixed slidable contact surface 34a in the front-rear direction. With such a configuration, the gap Sx that is narrower than the gap Sn formed by the two inner surfaces 36, 46 is a fixed sliding contact surface between the inner surface 46 of the blade body 42 of the movable blade 40 and the blade body 32 of the fixed blade 30. 34a.

Moreover, the blade body front-end | tip part 45 of the blade body 42 of the movable blade 40 has the following structure.
A point on the boundary line 47 a (see FIG. 5) between the inner surface 46 and the outer surface 47 of the blade tip 45, which is the foremost point 47 b in the front-rear direction, is an upper surface 47 c of the blade tip 45. It arrange | positions between the movable sliding contact surfaces 44a. The distance L2 between the tip point 47b and the upper surface 47c is set to a value larger than the distance L1 between the tip point 47b and the movable sliding contact surface 44a. That is, the dimension (distance L2) in the thickness direction (equivalent to the vertical direction) of the outer surface 47 of the blade tip 45 is at least larger than one half of the thickness of the blade tip 45.

  Here, the upper surface 47c of the blade tip 45 is the line of intersection between the outer surface 47 and the virtual surface provided perpendicularly to the movable sliding contact surface 44a from the distal end edge 44b of the movable sliding contact surface 44a. It refers to a surface (a two-dot chain line in FIG. 8) that includes the uppermost point in the vertical direction and is parallel to the movable sliding contact surface 44a.

With reference to FIG.9 and FIG.10, the side structure of the blade body 32 of the fixed blade 30 and the blade body 42 of the movable blade 40 is demonstrated.
FIG. 9 is a sectional view taken along line BB in FIG. FIG. 10 is a cross-sectional view taken along the line CC of FIG.

On both side surfaces 42b of the blade body 42 of the movable blade 40, cutting blade portions 48 protruding in the parallel direction are formed.
In the portion provided in the cutting portion 44 of the cutting blade portion 48, the blade edge 48b of the portion is formed in a sharp shape. That is, as shown in FIG. 9, the lower surface of the cutting blade portion 48 is formed as an extension surface of the movable sliding contact surface 44a, and the blade edge 48b is formed at an angle of 90 degrees or less.

  In the portion of the cutting blade portion 48 provided at the blade tip 45, the blade edge 48a of the portion is formed in a non-sharp shape. For example, as shown in FIG. 10, the blade edge 48a of the cutting blade portion 48 is formed in a curved surface.

The adoption of such a configuration of the cutting edge 48 is as follows.
The inner surface 46 of the blade tip 45 of the movable blade 40 is not in contact with the blade tip 35 of the fixed blade 30. Therefore, the hair clipper blade 4 is not intended to cut hair by sliding between the blade tip portion 45 of the movable blade 40 and the blade tip portion 35 of the fixed blade 30. However, if the cutting edge portion 48 provided on the side surface 42s of the blade tip 45 has a sharp shape, the skin S may be damaged when this portion hits the skin S due to the reciprocating motion of the movable blade 40. There is. Therefore, the blade edge 48a of the cutting blade portion 48 of this portion is formed in a curved surface.

The operation of the clipper blade 4 will be described with reference to FIGS.
FIG. 11 shows a deformed state of the skin S when the head unit 3 is pressed against the skin S.
FIG. 11A shows a deformed state of the skin S in a state where the blade body 32 of the fixed blade 30 and the blade body 42 of the movable blade 40 are aligned in the parallel direction. Thus, where the blade body 32 of the fixed blade 30 and the blade body 42 of the movable blade 40 are aligned in the parallel direction, the movable blade 40 adjacent to each other and between the blade bodies 32 of the adjacent fixed blades 30. The skin S enters between the blade bodies 42 of.

  FIG. 11B shows a deformed state of the skin S in a state where the blade body 32 of the fixed blade 30 and the blade body 42 of the movable blade 40 are not aligned in the parallel direction. That is, the deformation state of the skin S when the blade body 42 of the movable blade 40 is disposed between the blade bodies 32 of the adjacent fixed blades 30 is shown. In this state, the skin S entering from between the blade bodies 32 of the fixed blade 30 and between the blade bodies 42 of the movable blade 40 is pushed back by the movement of the movable blade 40. That is, as shown in FIG. 11A and FIG. 11B, the skin S is between the blade bodies 32 of the fixed blade 30 and between the blade bodies 42 of the movable blade 40 by the reciprocating operation of the movable blade 40. Get in or get pushed back.

  FIGS. 12 and 13 show a state in which the clipper blades 4, 100 are pressed against the skin S, and the skin S is cut along the surface of the blade bodies 32, 42, 132, 142 that contacts the skin S, It is the figure seen from the front-end | tip of the blade body 32,42,132,142 toward the base.

  FIG. 12 is a view showing a deformed state of the skin S when the skin S enters between the blade body 142 of the movable blade 140 and the blade body 132 of the fixed blade 130 in the hair clipper blade 100 having the conventional structure. In addition, the clipper blade 100 having a conventional structure refers to a blade having no gap Sn between the blade body tip portion 135 of the blade body 132 of the fixed blade 130 and the blade body tip portion 145 of the blade body 142 of the movable blade 140.

FIG. 13 is a view showing a deformed state of the skin S when the skin S enters between the blade body 42 of the movable blade 40 and the blade body 32 of the fixed blade 30 in the clipper blade 4 according to the present embodiment. is there.
Comparison of FIG. 12 and FIG. 13 reveals the following.

  In the case of the clipper blade 100 of the conventional structure, as shown in FIG. 12, when the two blade body tip portions 135 and 145 approach each other, the skin S has the blade body 132 of the fixed blade 130 and the blade body 142 of the movable blade 140. It remains in a state of being in between. And a part of this skin S is pinched | interposed in the part which both the blades 132 and 142 mutually slidably contact. This is because the sliding contact surfaces 134a and 144a extend to the pressing surfaces 135s and 145s that press the skin S.

  On the other hand, in the case of the clipper blade 4 of the embodiment, the skin S entering between the blade body 32 of the fixed blade 30 and the blade body 42 of the movable blade 40 as shown in FIG. 45 are gradually pushed back as they approach each other. For this reason, the skin S does not enter into the portion where the two blade end portions 35 and 45 are in sliding contact with each other. This is due to the existence of a gap Sn between the blade tip portion 35 and the blade tip portion 45 when the both blade tip portions 35 and 45 slide relative to each other. That is, the fixed slidable contact surface 34a of the blade tip 35 and the blade tip 45 are located behind the pressing surfaces (outer surfaces 37, 47) that press the skin S at the blade tip 35 and the blade tip 45. Since the movable slidable contact surface 44a exists, the skin S is not easily pinched.

Further, the clipper blade 4 according to the present embodiment also has the following action.
The outer surface 47 of the blade tip portion 45 of the blade 42 of the movable blade 40 is formed in a curved surface, and the dimension of the distance L2 is set so that the area that contacts the skin S is increased. The curved surface is less caught on the skin S than the flat surface. Moreover, the force which the blade front-end | tip part 45 of the blade 42 of the movable blade 40 presses the skin S is distributed, so that the area which contacts the skin S is large. For this reason, the hair clipper blade 4 is less damaging to the skin S than the one having a sharp blade tip 45 or the distance L2 being smaller than the distance L1.

The clipper blade 4 or the clipper 1 of the present embodiment has the following effects.
(1) In the hair clipper blade 4 according to the present embodiment, the inner surface 46 of the blade body distal end portion 45 of the movable blade 40 is more movable than the plane (reference surface SK2) including the movable sliding contact surface 44a of the movable blade 40. On the side. According to this configuration, the gap Sn is provided between the blade tip 45 of the movable blade 40 and the fixed sliding contact surface 34 a of the fixed blade 30.

  That is, in order to suppress the damage of the skin S, the inner surface 46 of the blade tip 45 of the movable blade 40 and the fixed blade 30 are fixed in order to suppress the sandwiching of the skin S entering between the blades 32 and 42 approaching each other. Clearances Sn and Sx are provided between the sliding contact surface 34a.

  According to this configuration, even when the blade body 42 of the movable blade 40 and the blade body 32 of the fixed blade 30 approach each other and the space between both the blade bodies 32, 42 becomes narrow, the blade of the blade body 42 of the movable blade 40. There are gaps Sn and Sx between the body tip 45 and the blade tip 35 of the blade 32 of the fixed blade 30. For this reason, pinching of the skin S by both the blade bodies 32 and 42 is suppressed, and thereby damage to the skin S is suppressed.

  In addition, the blade 4 of the clipper configured as described above is formed by cutting or the like at the blade tip 45 of the movable blade 40 and the blade tip 35 of the fixed blade 30. That is, since the conventional technique of using a resin to make the tip of the blade tip 45 of the movable blade 40 curved is not easy to manufacture. That is, the blade 4 of the present clipper is excellent in manufacturability as compared with the related art.

  (2) In the clipper blade 4 according to the present embodiment, the blade body 42 of the movable blade 40 is formed with cutting blade portions 48 on both side surfaces 42b. Of the cutting blade portion 48, a portion of the blade edge 48 a provided at the blade tip 45 is formed in a curved surface.

  Since a gap Sn is provided between the inner surface 46 of the blade tip 45 of the movable blade 40 and the blade tip 35 of the fixed blade 30, the skin is sandwiched between the skin S of the both blade tips 35 and 45. It is suppressed that S is damaged. However, when the tip of the cutting edge portion 48 provided on the side surface 42b of the blade body 42 of the movable blade 40 is sharp, the skin S may be damaged. Therefore, in the above configuration, the portion corresponding to the blade tip 45 in the cutting blade portion 48 is formed into a non-sharp structure, for example, a curved surface. Thereby, the damage of the skin S is suppressed. In addition, you may make the blade edge 48a of the cutting blade part 48 provided in the blade body front-end | tip part 45 into shapes other than a curved surface (refer FIG. 18 mentioned later).

(3) In the hair clipper blade 4 according to the present embodiment, the inner surface 46 of the blade tip 45 is on the fixed blade 30 side with respect to the plane (reference surface SK1) including the fixed sliding contact surface 34a of the fixed blade 30.
According to this configuration, the clearance Sn is provided between the inner surface 46 of the blade tip portion 45 of the movable blade 40 and the inner surface 36 of the blade tip portion 35 of the fixed blade 30. For this reason, since the frequency with which the skin S is pinched | interposed by the both-blade front-end | tip parts 35 and 45 becomes low, the damage of the skin S can be suppressed by this.

  (4) In the hair clipper blade 4 according to the present embodiment, the distal end side edge 44b of the movable sliding contact surface 44a of the blade body 42 of the movable blade 40 is the distal end of the fixed sliding contact surface 34a of the blade body 32 of the fixed blade 30. It is arranged closer to the base 43 side of the blade body 42 of the movable blade 40 than the side edge 34b. When the front end side edge 44b contacts the skin S, the skin S may be damaged. Therefore, in order to lower the frequency of damaging the skin S, the above configuration is adopted. Thereby, the possibility of damaging the skin S can be reduced.

  (5) In the clipper blade 4 according to the present embodiment, the tip point 47b on the boundary line 47a between the inner surface 46 and the outer surface 47 of the blade body tip portion 45 of the movable blade 40 is the upper surface of the blade body tip portion 45. It exists between 47c and the movable sliding contact surface 44a. In such a configuration, the distance L2 between the tip point 47b and the upper surface 47c of the blade tip 45 is larger than the distance L1 between the tip 47b and the movable sliding contact surface 44a of the blade tip 45. To do.

There is a case where the blade tip part 45 of the movable blade 40 is pressed against the skin S to cut the hair.
For example, when the hair is cut short, the blade tip 35 of the fixed blade 30 and the blade tip 45 of the movable blade 40 are pressed against the skin S. In such a case, if the area of the portion of the blade tip 45 of the movable blade 40 that is pressed against the skin S is small, the blade tip 45 of the movable blade 40 is skinned by the reciprocating motion of the movable blade 40. There is a risk that the skin S may be damaged (or worn) by rubbing against S. Therefore, the distance L2 between the tip point 47b on the boundary line 47a between the inner surface 46 and the outer surface 47 of the blade tip 45 and the upper surface 47c of the blade tip 45 is defined as the tip point 47b and the movable sliding contact surface. The distance L1 is set larger than the distance L1 to 44a. That is, the boundary line 47a between the inner surface 46 and the outer surface 47 is set at the blade tip 45 of the movable blade 40, and the area of the portion that is highly likely to be pressed against the skin S is increased. According to such a configuration, damage (abrasion) of the skin S can be suppressed as compared with a clipper blade in which the distance L2 is set to a length equal to or shorter than the distance L1.

(6) The clipper 1 of the above embodiment includes the clipper blade 4 having the above-described configuration.
Since the hair clipper 1 having this configuration includes the hair clipper blade 4 having the above configuration, the risk of damaging the skin S can be reduced when the hair is cut.

  The clipper 1 includes an embodiment different from the above embodiment. Hereinafter, the modification of the said embodiment as other embodiment is shown. The following modifications can be combined with each other.

  -In this embodiment, although the inner surface 36 in the blade body front-end | tip part 35 of the fixed blade 30 is arrange | positioned on the fixed blade 30 side rather than this reference surface by making the plane containing the fixed sliding contact surface 34a into the reference surface SK1, 36 may be configured as follows. That is, the formation of the inner surface 36 of the blade body tip portion 35 of the fixed blade 30 may be omitted, and the fixed sliding contact surface 34 a may be extended to the blade body tip portion 35. Even in this case, since the gap Sn is provided between the blade tip portion 35 of the fixed blade 30 and the blade tip portion 45 of the movable blade 40, the effect according to the above (1) can be obtained.

-In this embodiment, although the inner surface 46 of the blade front-end | tip part 45 of the movable blade 40 is formed flat, the form of the inner surface 46 is not limited to this.
FIG. 14 shows another form of the inner surface 46 of the tip 45 of the blade body of the movable blade 40. In this example, the inner surface 461 is recessed. In the case of this configuration, the gap Sn increases between the blade body tip 45 of the movable blade 40 and the fixed sliding contact surface 34 a of the fixed blade 30, so that the skin S can be prevented from being caught.

  FIG. 15 shows still another form of the inner surface 46 of the blade tip 45 of the movable blade 40. In this example, the inner surface 462 is formed into a curved surface shape with the center portion of the surface raised. In the case of this configuration, there is an effect of pushing back the skin S. Even with such a configuration, the effect according to the above (1) can be obtained.

  FIG. 16 shows still another form of the inner surface 46 of the blade tip 45 of the movable blade 40. In this example, the inner surface 463 is configured by two surfaces (a first surface 463a and a second surface 463b). The first surface 463 a is formed substantially perpendicular to the fixed sliding contact surface 34 a of the fixed blade 30. The second surface 463b is an inclined surface extending from the first surface 463a to the tip side. Even with such a configuration, the effect according to the above (1) can be obtained.

-In this embodiment, although the inner surface 46 of the blade front-end | tip part 45 of the movable blade 40 is formed flat, and the outer surface 47 is made into the curved surface, the form of the blade front-end | tip part 45 of the movable blade 40 is not limited to this.
In FIG. 17, the other form of the blade front-end | tip part 45 of the movable blade 40 is shown. In this example, the boundary portion 470 between the inner surface 46 and the outer surface 47 is a curved surface. In the case of this configuration, since the corner portion of the blade body tip portion 45 is eliminated, damage (abrasion) of the skin S caused by the movable blade 40 can be suppressed. In this configuration, since the boundary line 47a between the inner surface 46 and the outer surface 47 does not exist, the most advanced point of the blade body 42 can be substituted for the tip point 47b on the boundary line 47a (see FIG. 8). 42a is used to define the distances L1 and L2.

  In the present embodiment, in the cutting blade portion 48 of the blade body 42 of the movable blade 40, the blade edge 48a provided at the blade body tip portion 45 of the cutting blade portion 48 is formed in a curved surface, but the blade edge 48a. Is not limited to this.

  FIG. 18 shows another form of the blade edge 48 a provided at the blade body tip 45 in the cutting blade 48. In this example, the cutting edge 480a is chamfered. Even with such a configuration, damage to the skin S can be suppressed.

  In the present embodiment, the distance between the most advanced point 32a of the blade body 32 of the fixed blade 30 and the most advanced point 42a of the blade body 42 of the movable blade 40, that is, the “step” is set to be substantially “0”. However, this step is not limited to approximately “0”. The size of the step is allowed in the range of about 0 to 0.5 mm. In this case, it is preferable that the most distal point 32a of the blade body 32 of the fixed blade 30 protrudes ahead of the most distal point 42a of the blade body 42 of the movable blade 40. This is the reverse configuration, that is, when the most advanced point 42 a of the blade body 42 of the movable blade 40 protrudes ahead of the most advanced point 32 a of the blade body 32 of the fixed blade 30, the fixed blade 30. This is because the movable blade 40 hits the skin first and may cause damage to the skin.

  1: Hair clipper
  2: Main unit
  3: Head part
  4: Blade
  21: Drive mechanism
  21a: output shaft
  22: Power supply
  23: Control unit
  24: Operation unit
  30: Fixed blade
  31: Main body
  32: Blade
  32a: Cutting edge
  32s: Side
  33: Base
  34: Cutting section
  34a: Fixed sliding contact surface
  34b: front end side edge
  35: Cutting edge tip
  36: Inner surface
  37: External surface
  40: Movable blade
  41: Main body
  42: Blade
  42a: Cutting edge
  42b: side surface
  42s: side
  43: Base
  44: cutting part
  44a: movable sliding contact surface
  44b: front end side edge
  45: Cutting edge tip
  46: Inner surface
  47: External surface
  47a: boundary line
  47b: Tip point
  47c: upper surface
  48: Cutting edge
  48a: cutting edge
  48b: cutting edge
  50: Fixed frame
  51: Holding frame
  52: Plate
  53: engagement portion
  53a: fitting portion
  54: Pressing device
  54a: Spring
  54b: Spring
  54c: end
  54d: end
  100: blade
  130: Fixed blade
  132: Blade
  134a: sliding contact surface
  135: Cutting edge tip
  135s: Press surface
  140: Movable blade
  142: Blade
  144a: sliding contact surface
  145: Cutting edge tip
  145s: Press surface
  461: Inner surface
  462: Inner surface
  463: Inner surface
  463a: first side
  463b: Second surface
  470: boundary
  480a: cutting edge
  S: Skin
  Sn: gap
  Sx: gap
  SK1: Reference plane
  SK2: Reference plane
  L1: Distance
  L2: Distance

Claims (6)

A fixed blade having a plurality of blades, and a movable blade having a plurality of blades arranged in the same direction as the arrangement of the blades of the fixed blade,
Each of the blade bodies of the movable blade has a cutting portion formed with a movable sliding contact surface that contacts the fixed blade, and a blade body tip portion provided on the tip side of the cutting portion,
Inner surface of the blade body distal end portion of the movable blade, Ri the movable blade-side near than a plane including the movable sliding contact surface,
The blade body of the movable blade is formed with a cutting blade portion on each side surface,
A blade of a hair clipper in which a cutting edge portion of the cutting blade portion provided at the tip of the blade body is formed into a curved surface or chamfered . A fixed blade having a plurality of blades, and a movable blade having a plurality of blades arranged in the same direction as the arrangement of the blades of the fixed blade,
Each of the blade bodies of the movable blade has a cutting portion formed with a movable sliding contact surface that contacts the fixed blade, and a blade body tip portion provided on the tip side of the cutting portion,
Inner surface of the blade body distal end portion of the movable blade, Ri the movable blade-side near than a plane including the movable sliding contact surface,
The blade body tip of the movable blade has the inner surface, and an outer surface that is continuously formed on the inner surface and faces outward.
The tip point on the boundary line between the inner surface and the outer surface of the blade tip portion of the movable blade is between the upper surface of the blade tip portion and the movable sliding contact surface,
A clipper blade having a distance between the tip point and the upper surface greater than a distance between the tip point and the movable sliding contact surface . Each of the blade bodies of the fixed blade has a cutting portion in which a fixed sliding contact surface that is in contact with the movable sliding contact surface is formed, and a blade body tip portion that is provided on the tip side of the cutting portion,
The clipper blade according to claim 1 or 2, wherein an inner surface of the blade body tip portion of the fixed blade is on the fixed blade side with respect to a plane including the fixed sliding contact surface. The distal end side edge of the movable sliding contact surface in the blade body of the movable blade is more proximal than the distal end side edge of the fixed sliding contact surface in the blade body of the fixed blade. The clipper blade according to claim 3, wherein the blade is disposed on the side.   A fixed blade including a plurality of blades;
  A movable blade including a plurality of blades aligned in the same direction as the direction in which the plurality of blades are aligned;
  The blade of the movable blade has a cutting portion having a movable sliding contact surface that is in sliding contact with the fixed blade, and an inner surface that is provided closer to the distal end side of the movable blade than the cutting portion and is continuous with the movable sliding contact surface. Including a blade tip having
  The blade of the fixed blade includes a cutting portion having a fixed sliding contact surface that is in sliding contact with the movable blade, and an inner surface that is provided on the distal end side of the fixed blade with respect to the cutting portion and that is continuous with the fixed sliding contact surface. Including a blade tip having
  The most advanced point of the tip of the fixed blade and the most advanced point of the tip of the movable blade substantially coincide with each other in the front-rear direction of the fixed blade and the movable blade,
  The inner surface of the tip of the movable blade is provided closer to the movable blade than the plane including the movable sliding contact surface;
  The front end side edge of the movable sliding contact surface in the front-rear direction is provided on the rear side of the front end side edge of the fixed sliding contact surface.
  Hair clipper blade.   A clipper comprising the blade of the clipper according to any one of claims 1 to 5.