JPH0525578Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Technical field of the invention] In this invention, the tips of the fixed blade and the movable blade are separated. This relates to an electric hair clipper that can hold.

[Prior Art] Conventionally, as shown in FIG. 6, the upper surface of a fixed blade 52 attached to the tip of a blade block case 51 of a main body case 50 is formed into a flat surface.
On this upper surface, a movable blade 55 is arranged which is slid along the fixed blade 52 via a crank rotating body 54 by a drive mechanism 53.
The movable blade holder 56 is placed on the upper surface of the movable blade holder 56, and the movable blade holder 56 is placed on the upper surface of the movable blade holder 56.

A projecting piece 59 for pressing with a finger 58 is provided on the rear part of the movable blade presser 56, and a spring member 57
When the projecting piece 59 is pressed in the direction of the movable blade 55 against the bias of A gap 60 is formed at the tip of the fixed blade 52.
is formed. When the pressing force of the finger 58 is released, the movable blade 55 is urged by the spring member 57 and the fixed blade 5
2.

[Problems to be solved by the invention] With this configuration, when cleaning hair caught between the movable blade 55 and the fixed blade 52 while using the electric clipper, it is necessary to use the finger 58 to clean the hair that is caught between the movable blade 55 and the fixed blade 52. The protrusion 59 must be cleaned while being pressed, which is not only inconvenient but also troublesome since one hand cannot be used. Furthermore, the narrow blade block case 51 must be kept pressed by the fingers 58 against the relatively large biasing force of the spring member 57, which may cause pain to the fingers 58 and risk of injury. There were other problems.

[Means for solving the problem] This invention sets the center of gravity of the movable blade behind the fulcrum of rotational movement of the movable blade, and also allows the movable blade to rotate freely on a spring member on the horizontal extension line of the fulcrum. By providing a locking part on the top surface of the fixed blade that holds the movable blade by locking the rear end of the movable blade and holding the movable blade in a state where the tip of the movable blade and the tip of the fixed blade are separated, The tips of the movable blade and the fixed blade are kept separated from each other.

[Operation] When the spring bias applied to the movable blade by the spring member is released, the movable blade rotates its tip upwards about the fulcrum of rotational movement, and its rear end rotates downward. The movable blade and the fixed blade are temporarily fixed by being locked in the locking part of the fixed blade, and the tips of the movable blade and the fixed blade are separated from each other.

[Embodiment of the invention] An embodiment of the invention will be described in detail based on FIGS. 1 to 4.

In FIGS. 1 and 2, reference numeral 1 denotes a main body case of an electric hair clipper, which is composed of an upper case 2, a lower case 3, and a blade block case 4, each of which is integrally formed of synthetic resin. A blade block case 4 is detachably engaged with the tip of the lower case 3 by an engaging part 5 and an engaged part 6 provided on the lower case 3 and the blade block case 4, respectively. A partition wall 7 is integrally provided from the upper case 2 at a position opposite to the engagement point between the blade block case 4 and the lower case 3, and divides the main body case 1 into two parts, a front part and a rear part. There is.

A drive mechanism 8 is built in the rear part of the main body case 1, and a rotation shaft 9 of this drive mechanism 8 is connected to the partition wall 7.
A crank rotating body 10 is fixed to the rotating shaft 9, and an eccentric rotating shaft 11 is fixed to the tip of the crank rotating body 10, and a drive mechanism 8 is driven and the rotating shaft 9 rotates, this rotation is transmitted to the crank rotating body 10 and the eccentric rotating shaft 11, so that the eccentric rotating shaft 11 rotates eccentrically.

A cutting guide surface 12 is provided on the front outer surface of the blade block case 4.
The cutting edge of the fixed blade 13 along the blade block case 4
It is attached so that it protrudes from the tip.

Reference numeral 14 denotes support portions erected on both sides of the central portion of the blade block case 4, and a shaft portion 16 for pivotally supporting the end portion of the spring member 15 is attached to the lower end portion.

At the tip of the spring member 15, a grip portion 15a is provided which is formed into a substantially U-shape that can hold a fingertip, and this grip portion 15a is
Movable blade holder 1 fixed to the top surface of the movable blade 17
It is locked in a locking groove 19a provided in a protrusion 19 provided on the upper surface of the housing 8. Therefore,
The movable blade 17 is connected to the locking groove 1 via the movable blade retainer 18.
It is rotatably held by a spring member 15 at a position 9a.

An eccentric rotating shaft 11 is attached to the rear end of the movable blade holder 18.
An engagement groove 20 is provided to engage with.

Therefore, when the drive mechanism 8 is driven, this rotation is transmitted to the rotating shaft 9 and the crank rotating body 11, and the eccentric rotating shaft 11 moves eccentrically. This eccentric movement causes the movable blade 17 to slide in the left-right direction along the fixed blade 13 via the movable blade holder 18, but at this time, the spring member 15 moves the movable blade 17 to the fixed blade 1 The movable blade 17 is biased in the direction
The movable blade 17 is rotatably held so as to slide in the left-right direction along the fixed blade 13.

A locking portion 21 is provided on the upper surface of the rear end of the fixed blade 13, and the locking portion 21 is formed in a tapered shape slanting toward the tip.
As shown in the figure, against the bias of the spring member 15,
The rear end 17a of the movable blade 17 is locked by the locking part 21, so that the tips of the movable blade 17 and the fixed blade 13 are separated from each other, so that a state can be maintained with a gap 22 provided at the blade edge. It's summery.

Note that similar effects can be obtained by forming the rear end portion 17a of the movable blade 17 in a tapered shape instead of the locking portion 21.

Here, when the movable blade 17 rotates, the fulcrum O of this rotational movement is the center line A of the movable blade 17 in the front-rear direction.
, an extension line B (fulcrum point O
(on the left-right extension line).
Therefore, if the center of gravity of the movable blade 17 is set to the rear of this fulcrum O, when the grip portion 15a of the spring member 15 is pulled upward to release the biasing force of the spring member 15 on the movable blade 17, the movable blade 17 will move naturally. The rear part descends around the fulcrum O, and the rear end part 17a is locked by the locking part 21 of the fixed blade 13, and the tips of the fixed blade 13 and the movable blade 17 are separated to form a gap 22. is configured to be

Note that, as shown in FIG. 1, when a gap 22 is provided between the movable blade 17 and the fixed blade 13, the tip 2a of the upper case 2 comes into contact with the tip 17b of the movable blade 17. It has been extended to the point where it touches the ground. Therefore, after cleaning the blade edge, the movable blade 17 is installed at the same time as the blade block case 4 is installed in a predetermined position.
The distal end portion 17b of the upper case 2 is pressed against the distal end portion 2a of the upper case 2 to return to the use state.

23 is a switch.

Next, a method for attaching and detaching the blade block case 4 to the upper case 2 and lower case 3 will be explained.

The crank rotating body 10 and the eccentric rotating shaft 11 fixed to the rotating shaft 8 of the drive mechanism 8 are made to protrude from the partition wall 7 toward the front of the main body case 1, and the starting mechanism 8 is fixed at a predetermined position in the lower case 3. At the same time,
After fixing the upper case 2 and the lower case 3 with screws or the like, the engaging part 5 of the lower case 3 and the engaged part 6 of the blade block case 4 to which the fixed blade 13, movable blade 17, etc. are fixed are connected. While engaging the blade block case 4
If you insert it into the tip of the main body case 1, the support part 1
The engaging part (not shown) provided on the side wall of the lower case 3 engages with the engaged part (not shown) of the lower case 3 provided at a position opposite to this engaging part, and the blade is cut. The block case 4 is fixed to the tip of the main body case 1.

In this state, the movable blade 17 is biased by the spring member 15 and held in pressure contact with the fixed blade 13, and the eccentric rotation shaft 11 of the crank rotating body 10 is connected to the engagement groove 2 of the movable blade holder 18. When the drive mechanism 8 rotates, the movable blade 17
is held by the spring member 15 and slides along the fixed blade 13 in the left-right direction.

When removing the blade block case 4 from the main body case 1 for cleaning, when the blade block case 4 is pulled from the tip of the main body case 1, the engaging part 5, the engaged part 6, and the supporting part 14 are removed. The engagement between the engaged portion provided on the lower case 3 and the engaged portion provided on the lower case 3 is released, and the blade block case 4 can be removed.

Next, when the grip part 15a of the spring member 15 is pulled up while pressing the rear end of the movable blade holder 18 with your fingers, the movable blade 17 rotates upward and the rear end 15a engages with the locking part 21 of the fixed blade 13. A gap 22 is provided at the tips of the movable blade 17 and the fixed blade 13, and this state is maintained even when the fingers are released. At this time, the tip 2a of the upper case 2 is in contact with the tip 17b of the movable blade 17.

After cleaning, as described above, the blade block case 4 is engaged with the tip of the main body case 1, and at the same time, the tip 2a of the upper case 2 is connected to the movable blade 1.
7, the engagement between the rear end 17a of the movable blade 17 and the locking part 21 is released.
The movable blade 17 is pressed against the fixed blade 13. On this occasion,
Since the stepped portion 21 is formed in a tapered shape, the rear end portion 17a of the movable blade 17 can be smoothly locked and released.

[Effects of the invention] This invention sets the center of gravity of the movable blade behind the fulcrum of rotational movement of the movable blade, and holds the movable blade rotatably on a spring member on the left-right extension of the fulcrum. , a locking part is provided on the top surface of the fixed blade to lock the rear end of the movable blade and hold the movable blade in a state where the tip of the movable blade and the tip of the fixed blade are separated. When cleaning hair caught between the movable blade and the fixed blade, by releasing the spring bias, the tip of the movable blade will naturally rotate upwards around the fulcrum of rotational movement. The rear end rotates downward and is locked to the locking part of the fixed blade, and becomes temporarily fixed, and the tips of the movable blade and the fixed blade are separated, so the fixed blade and the movable blade are separated from each other. It is easy to separate the tip from the blade, and it is also easy to clean.

In addition, since either the rear end of the movable blade or the locking part of the fixed blade is formed into a tapered shape, it is easy to engage and disengage the movable blade and the fixed blade, and
After cleaning, the movable blade can be put into use by simply pressing the cutting edge, making it easy to operate.

[Brief explanation of the drawing]

Figures 1 to 5 show examples of this invention. Figure 1 is a cross-sectional view of the main part showing the state in which the cutting edge is cleaned, Figure 2 is a perspective view, and Figure 3 is a cross-sectional view of the main part showing the state of use. ,
4 is a plan view of the blade block case 4, FIG. 5 is a sectional view of the main part of the blade block case 4 shown in FIG. 4, and FIG. 6 is a sectional view of the main part of the conventional example. 1...Body case, 4...Blade block case,
8... Drive circuit, 13... Fixed blade, 15... Spring member, 17... Movable blade, 21... Locking part, 22...
... air gap, O... fulcrum.

Claims (1)

[Claims for Utility Model Registration] (1) A main body case with a built-in drive mechanism, a fixed blade attached to the tip of the main case, and a movable blade that slides along the fixed blade by the drive mechanism. , an electric hair clipper having a spring member that biases the movable blade in the direction of the fixed blade, wherein the movable blade is rotatably held by the spring member on a horizontal extension line of a fulcrum of rotational movement; The center of gravity of the movable blade is set behind the fulcrum, and the movable blade is held by locking the rear end of the movable blade with the tip of the movable blade and the tip of the fixed blade separated from each other. An electric clipper characterized in that a locking portion is provided on the upper surface of the fixed blade. (2) The electric hair clipper according to claim 1, characterized in that either the locking part of the fixed blade or the rear end of the movable blade is formed into a tapered shape.