JPS6226053Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an electric clipper equipped with a fixed blade, a movable blade disposed on the fixed blade, and a driving member connected to the movable blade. It is related to.

[Conventional technology]

Figures 10 and 11 are conventional examples of
These are cross-sectional views showing a part of the electric hair clipper proposed in Publication No. 51-141069, etc., in which Fig. 10 shows the normal state, and Fig. 11 shows the cutting edge of the movable blade relative to the cutting edge of the fixed blade. It is a figure which shows the state which made it open.

In these figures, 51 is a fixed blade, 52 is a movable blade arranged on the fixed blade 51, 53 is a drive plate connected to the movable blade 52, and the fixed blade is connected to the rear on the opposite side from the cutting edge. It has a tongue piece 54 that is bent in the direction of 51. Further, two contact walls 55 are provided above the drive plate 53 at a predetermined interval, and the tip of a drive rod 56 that is rotated eccentrically is fitted between the contact walls 55. It's summery. A leaf spring 57 has its rear end fixed to the rear end of the fixed blade 51, and its free end presses the movable blade 52 toward the fixed blade 51 via the drive plate 53. These fixed blades 51, movable blades 52,
A blade block consisting of an assembly of a driving plate 53, a leaf spring 57, etc. is supported by a main body case (not shown).

In normal use, the tip of the drive rod 56 is inserted between the abutment walls 55 of the drive plate 53, as shown in FIG. The drive plate 53 and the movable blade 52 integrally connected thereto reciprocate with respect to the fixed blade 51 by the drive rod 56 which is driven to rotate eccentrically, thereby exhibiting the function of an electric hair clipper.

If it is desired to remove the hair debris that has adhered between the cutting edge of the fixed blade 51 and the cutting edge of the movable blade 52, remove the blade block from the main body case, and then remove the hair from the drive plate 53 as shown in FIG. The upper end of the abutment wall 55 is pressed toward the fixed blade 51 side with a finger 58. Then, the lower end of the tongue piece 54 of the driving plate 53 comes into contact with the upper surface of the fixed blade 51, and using this as a fulcrum, the movable blade 52 and the driving plate 53 move clockwise toward the drawing against the elasticity of the leaf spring 57. A space for cleaning is formed between the blade edge of the fixed blade 51 and the blade edge of the movable blade 52.

[Problem that the invention attempts to solve]

However, in this proposed electric hair clipper, the portion of the drive plate 53 where the tip of the drive rod 56 engages is the same as the portion where the finger 85 engages. As described above, by pressing the contact wall 55 of the driving plate 53, the cutting edge of the movable blade 52 is lifted up from the cutting edge of the fixed blade 51. When the movable blade 52 is reciprocated at high speed, the cutting edge of the movable blade 52 tends to lift up, which reduces the sharpness of the bristles.

In particular, when the amount of mowing is large, a time lag tends to occur between the timing of the reciprocating movement of the drive rod 56 and the timing at which the driving force by the drive rod 56 is transmitted to the abutment wall 55, and the abutment wall 55 is moved diagonally. A downward pushing force acts, which promotes the above-mentioned tendency of the cutting edge of the movable blade 52 to lift up, resulting in poor hair cutting.

In addition, in the conventional electric hair clipper,
A lubricating oil such as grease is generally applied between the contact wall 55 of the drive plate 53 and the tip of the drive rod 56. Therefore, when the contact wall 55 is pressed with the finger 58, the finger 58 becomes dirty with lubricating oil, making it difficult to handle.

The present invention eliminates the drawbacks of the prior art described above, and
To provide an electric clipper that cuts hair well and is easy to handle.

[Means for solving problems]

In order to achieve the above-mentioned purpose, the present invention has a fixed blade with a comb-shaped cutting edge at the tip, a cutting edge corresponding to the cutting edge of the fixed blade at the tip, and a protrusion at the rear end that comes into contact with the fixed blade. A blade block is constructed by integrating the provided movable blade and a pressing spring that elastically biases the movable blade so that the movable blade can slide back and forth toward the fixed blade.

This blade block is detachably supported by the main body case, and an engaging portion is provided on the upper part of the movable blade to engage with and disengage from the drive rod extending from the main body case and to be integrally connected to the movable blade. The direction in which the drive rod engages and disengages from the joint is perpendicular to the imaginary line connecting the front and rear contact points of the fixed blade and the movable blade. Furthermore, a protrusion for opening the movable blade extending rearward from the protrusion of the movable blade is provided along the imaginary line.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a main body case made of synthetic resin or the like, in which a motor 2 is housed, and an eccentric member 4 is fixed to a rotating shaft 3 of the motor 2. Reference numeral 5 denotes a vibrator whose base end 5a is fixed to the main body case 1 with a screw 6 or the like, and the back surface of the free end 5b of this vibrator 5 has a hole 7 into which the eccentric member 4 fits. A drive rod 8 is integrally provided on the surface of the free end portion 5b, and the tip of the drive rod 8 extends into the blade block storage chamber 9 formed at the tip of the main body case 1. It's being served.

Reference numeral 10 denotes a synthetic resin fixed blade holder disposed in the opening at the tip of the main body case 1. On the upper surface of this fixed blade holder 10, a fixed blade 11 is attached to a welding protrusion 12.
etc., is firmly fixed.

A movable blade 13 is disposed on the upper surface of the fixed blade 11, and has a cutting edge portion 15 corresponding to the comb-shaped cutting edge portion 14 of the fixed blade 11. At the rear end of the movable blade 13, a protrusion 16 that is bent downward by press processing, for example, is integrally formed.This protrusion 16 and the cutting edge 15 are connected to the fixed blade
It is placed in contact with the top surface of. 17 is the movable blade 13
The driving plate is fixed to the upper surface of the drive plate and is made of synthetic resin or the like, and the engaging protrusion 18 is integrally formed on the upper surface of the drive plate. The engaging protrusion 18 is removably engaged with an engaging portion 19 formed at the tip of the drive rod 8, and thereby the movable blade 13
is adapted to be slid back and forth in the left-right direction (in the directions of arrows a and b in FIG. 2).

Reference numerals 20 and 20 denote opposing wall portions located on the rear side of the fixed blade 11 and protruding from the upper surface of the fixed blade holder 10. The rod 22 is constructed between the two wall portions 20, 20 by inserting both ends of the rod 22 into holes 21, 21 formed in the two wall portions 20, 20, respectively.

23 is a pressing spring wrapped around the rod 22;
For example, it is composed of a substantially U-shaped wire spring. The base end portion 23a, which extends rearward and has a downward spring force, is locked to a locking step portion 24 projecting from the rear end of the fixed blade holder 10. In addition, each tip portion 23 is parallel to each other and has a downward spring force.
b, 23b extend into the grooves 25, 25 formed at both left and right ends of the upper surface of the drive plate 17, and bend the bent portions 23c, 23c formed at each tip into each of the grooves 25. Small hole 26, 2 formed at the tip
6 and is pivoted so that it can rotate freely within a horizontal plane. As a result, each tip 23 of the pressing spring 23
The spring force of b, 23b is biased to the movable blade 13 via the drive plate 17, and the movable blade 13 is urged against the fixed blade 1.
It is in ballistic contact with 1. Tip 23 of the wire spring 23
The tip portions 23b, 23c of the pressing spring 23 are rotatably inserted into the small holes 26, 26, respectively, following the reciprocating movement of the movable blade 13.
This is to enable parallel movement of the movable blade 23b and to restrict the position of the cutting edge portion 15 of the movable blade 13 in the protruding direction.

A protrusion 27 is formed at the rear end of the drive plate 17 and extends rearward and upward from the contact position between the protrusion 16 of the movable blade 13 and the fixed blade 11. Movable blade 13 with 16 as a fulcrum
The finger rest 27a is configured as a finger rest for a pushing operation, which is rotated against the spring force of the tip end 23b of the pressing spring 23. formed in parallel. The fixed blade holder 3, the fixed blade 11,
A blade block 28 is composed of the movable blade 13, the drive plate 17, the pressing spring 23, and the like.

29 is an elastic locking piece whose base end is fixed to the main body case 1 side, and 30 is a distal end locking portion 2 of the locking piece 29 which is protruded from the upper surface of the fixed blade holder 10.
This is a locking protrusion that is removably locked to 9a.

On the side of the block blade 28, for example, at the rear end of the fixed blade holder 10, a connecting portion 31 is integrally formed to protrude. On the other hand, in the embodiment, the inner wall 9 of the blade block storage chamber 9
A is formed with a U-shaped groove 32 as shown in FIG. 3, and a shaft forming a pivot portion 33 is fitted into this U-shaped groove 32. This pivot portion 33
is pressed against the bottom surface of the groove 32 by a stepped portion 34 integrally formed on the base end 5a of the vibrator 5, thereby preventing the pivot portion 33 from deviating from the U-shaped groove 32. and rattling is prevented. On the other hand, a bearing portion 35 that is pivotally supported by the pivot portion 33 is formed at the tip 31 a of the connecting portion 31 . This bearing portion 35 includes a pair of elastically deformable C-shaped holding pieces 36, 36 that rotatably hold both ends of the pivot portion 33, and both of these C-shaped holding pieces 36, 36 are integrated. It is composed of a half-cylindrical fitting part 37 connected to. It is preferable that the C-shaped holding pieces 36, 36 are cut out by an arc corresponding to approximately 1/4 of the length of the entire circumference.

In the above configuration, when the tip of the blade block 28 is pinched and rotated in the direction of the arrow, the lock between the locking piece 29 and the locking protrusion 30 is released, and the blade block is rotated about the pivot portion 33. 28
can be opened from the blade block storage chamber 9 as shown in FIG. It is possible to remove hair debris adhering to the blade block 28 and the storage chamber 9, or to supply oil to predetermined locations of the blade block 28. Since the blade block 28 is pivotally connected to the pivot portion 33 of the main body case 1 via the C-shaped holding pieces 36, there is no risk of the blade block 28 accidentally falling off during the opening operation.

With the blade block 28 in the open state, if you pull this blade block 28 forward, the blade block 2
Since the C-shaped holding pieces 36, 36 on the 8 side each elastically deform from the state shown in FIG. 5 to a larger diameter as shown in FIG. When opened, the C-shaped holding pieces 36, 36
The pivoting relationship between the blade block 28 and the pivot portion 33 is released, and the blade block 28 is moved to the main body case 1 as shown in FIG.
It can be separated from the side.

Moreover, the cutout portion 3 of the C-shaped holding pieces 36, 36
The blade block 28 can be attached to the main body case 1 by pressing the blade block 6a against the pivot portion 33.

With the blade block 28 removed from the main body case 1, for example, if you want to remove hair debris that has adhered between the blade edge part 14 of the fixed blade 11 and the blade edge part 15 of the movable blade 13 in the blade block 28, , by simply pushing the finger rest 27a downward as shown in FIG. 8, the protrusion 16 acts as a fulcrum and the cutting edge 15 of the movable blade 13 can be separated from the cutting edge 14 of the fixed blade 11. , hair waste can be removed without any effort.

In particular, when the blade block 28 is installed, if the C-shaped holding pieces 36, 36 are simply supported on the pivot portion 33, the blade block 28 may shake. Since they are connected by a half-cylindrical portion 37, and the pivot portion 33 is fitted into this cylindrical portion 37, the rotation of the blade block 28 becomes smooth and rattling is prevented.

FIG. 9 is an explanatory diagram for explaining the direction in which the engagement portion 19 engages and disengages from the engagement protrusion 18 of the drive plate 17, and the direction in which the protrusion piece 27 extends.

As shown in the figure, an imaginary line C is assumed that connects a contact point A on the front side and a contact point B on the rear side of the fixed blade 11 and the movable blade 13. The engaging protrusion 18 is erected in a direction substantially perpendicular to this imaginary line C.
Therefore, the engagement and disengagement direction of the engagement portion 19 of the drive rod 8 with respect to the engagement protrusion 18 is a direction D perpendicular to the virtual line C.

Further, a protruding piece 27 for opening the cutting edge portion 15 of the movable blade 13 extends rearward, and its finger contact portion 27a is separated from the engagement protrusion 28 by a predetermined distance. Direction E (finger rest 27a
The extending direction E') is substantially along the direction of the virtual line C.

In the above embodiment, the pivot portion 33 is provided on the main body case 1 side and the bearing portion 35 is provided on the blade block 28 side, but conversely, the pivot portion 33 is provided on the blade block 28 side and the pivot portion 33 is provided on the main body case 1 side. A bearing portion 35 may be provided respectively.

[Effect of idea]

As described above, this invention is designed so that the direction of engagement and disengagement of the drive rod with respect to the engagement part provided integrally on the movable blade is perpendicular to the imaginary line connecting the front and rear contact points between the fixed blade and the movable blade. It is composed of

Further, the protruding piece provided on the movable blade for opening the movable blade is formed so that the extending direction of the protruding piece faces rearward along the imaginary line.

Therefore, the electric hair clipper of the present invention is different from the previously proposed ones as described above, in that the engaging part that engages with the drive rod and the protruding piece for releasing the movable blade are formed in separate places, and The direction in which the drive rod engages and disengages from the part and the direction in which the protrusion extends are different and interlink with each other. Therefore, when the movable blade is slid back and forth by the drive rod, the blade edge does not lift up relative to the fixed blade edge, and even when the amount of mowing is large, the blade edge does not lift up and the sharpness is maintained. It has excellent sharpness.

In addition, since the engaging part and the protruding piece are provided separately, even if lubricating oil such as grease is applied to the engaging part, when the protruding piece is pressed with a finger, the lubricating oil will adhere to the fingertip and cause the finger to It has the advantages of not contaminating the surface of the body and is easy to handle.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view showing an example of the electric clipper according to this invention, Fig. 2 is an exploded perspective view showing the blade block, Fig. 3 is an explanatory view of the pivot, and Fig. 4 shows the blade block attached to the main body case. 5 and 6 are explanatory diagrams of the action of the pivot portion and the bearing portion. FIG. 7 is an explanatory diagram of the case where the blade block is separated from the main body case. The figure is a sectional view showing a state in which the cutting edge of the movable blade of the blade block is separated from the cutting edge of the fixed blade, and Figure 9 explains the direction of the engagement protrusion and protrusion provided on the movable blade. 10 and 11 are side views showing a part of a conventionally proposed electric hair clipper. 1...Body case, 11...Fixed blade, 13...
Movable blade, 14, 15...Blade tip portion, 17...Drive plate, 18...Engagement protrusion, 19...Engagement portion, 23...
...If you press it, 27...protrusion, 27a...finger rest, 28...blade block.

Claims (1)

[Scope of utility model registration request] A fixed blade having a comb-shaped cutting edge at its tip, a movable blade having a cutting edge corresponding to the cutting edge of the fixed blade at its tip, and a protrusion at its rear end that comes into contact with the fixed blade, and the movable blade being fixed to the fixed blade. A blade block is formed by integrating a pressing spring that elastically biases the blade side so as to be able to slide back and forth, and this blade block is removably supported by the main body case. An engaging part is provided that engages and disengages from the fixed blade and the movable blade and is integrally connected to the movable blade. The electric motor is configured to be perpendicular to the line, and the protrusion for opening the movable blade extending rearward from the protrusion of the movable blade has an extending direction substantially along the imaginary line. Type hair clipper.