JPS6036225Y2 - electric hair clipper - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric hair clipper, and more particularly to an articulation structure for a knob body that operates a plow blade body that is slidably provided along a fixed blade so as to perform plowing.

In conventional electric hair clippers equipped with this type of plow blade,
The articulation structure of the plow blade body is based on Utility Model No. 49-45777.
As shown in the publication, an articulation protrusion is formed on the inner surface of the case body, a retainer that engages and disengages from the articulation protrusion is provided protruding from the plow blade, and this engager is engaged with the articulation protrusion using a coiled spring. A structure is adopted in which the force is applied in the direction of mating, but since this structure uses a coiled spring, there are many parts.
It also has drawbacks such as the assembly process being complicated due to the inclusion of springs.

The present invention was developed in view of the above-mentioned drawbacks, and includes a movable blade support holding a spring body that presses the movable blade against the fixed blade, an articulated part of the knob body that slides the plow blade body, and a case body. It forms an elastic press-contact part that biases in the direction of maintaining engagement with the articulated part, and it is easy to assemble without increasing the number of parts, provides reliable moderation movement of the plow blade, and is assembled at low cost. This provides an electric hair clipper that can

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings.

Reference numeral 1 denotes a case body that houses a drive source, for example, an electric motor 2, and this case body 1 includes an upper case member 3 molded from synthetic resin, a lower case member 4 molded from synthetic resin that is joined to the upper case member 3, and It consists of a cover 7 molded from synthetic resin that is attached to a mounting portion 6 of the clipper blade assembly 5 formed at the front part of the lower case member 4.

The electric motor 2 is attached to the front end partition wall 8 of the lower case member 4.
A bearing hole (not shown) for penetrating and supporting the drive shaft 9 is formed.

A rotation transmitting body 10 is coupled to the distal end of the drive shaft 9, and an eccentric rotating portion 11 is formed protruding from the distal end of the rotation transmitting body 10.

Next, the clipper blade assembly 5 is assembled into a cover 7, and an engagement protrusion 13 is formed at the rear end of the cover 7 to engage an engagement recess 12 formed at the lower front end of the lower case member 4. Further, a guide hole 14 in the front-rear direction is formed in the rear center portion of the cover 7.

Further, a protruding step portion 15 is formed on the inner surface of the tip of the cover 7.

Next, 16 is a plow blade body, this plow blade body 16 is formed from a plate-shaped spring material, and a plow blade part 16a is formed on the front edge.
An elastic piece 17 is integrally provided at the center of the rear edge.

The front part of this elastic piece part 17 has a semicircular protrusion 18 extending upward.
is formed in a bulging manner, and a pair of engagement portions 19, 19 in the shape of a thank you letter are formed at the rear part spaced apart from each other in the front and rear.

In addition, this elastic piece part 17 has a relief hole 2 to enhance the elastic effect.
0.20 is formed.

Further, a knob portion 22 projecting outward from the guide hole 14 of the cover 7 is integrally protruded from the lower surface of the operating knob body 21 for advancing and retracting the plow blade body 16.

The upper surface of the knob body 21 is integrally formed with protruding locking portions 23, 23 that engage with the engaging portions 19, 19 formed on the elastic piece portion 17 of the plow blade body 16.

Further, a recessed articulated portion 25 is formed on the lower surface of the knob 21 to engage with and disengage from a protruding articulated portion 24 protruding from the inner surface of the cover 7.

Further, reference numeral 26 denotes a fixed clipper blade having a clipper blade portion 26a on the front edge, and the plow blade body 1 is attached to the front upper surface of the cover 7.
6 and is fixed with screws or the like, and the plow blade body 16 slides on the lower surface of this fixed blade 26.

Next, reference numeral 27 denotes a movable clipper blade having a clipper blade portion 28 on its front edge, and a movable blade operating body 29 molded from synthetic resin is integrally fixed to the upper surface of the movable blade 27 by welding or the like.

A spring engaging portion 32 is provided between a receiving protrusion 30 and a guiding protrusion 31 that protrude spaced apart from each other on both sides of the upper surface of the movable blade actuating body 29.
is formed in the shape of a groove.

The guide protrusion 31 has a substantially triangular shape with a vertical guide portion 31a extending forward from the top of the arc.

Further, at the center of the rear portion of the movable blade actuating body 29, an actuated protrusion is formed in which an engaging groove 33 for engaging the eccentric rotating portion 11 of the rotation transmitting body 10 is formed.

Next, reference numeral 35 denotes a spring body, which is molded with a spring rod bent into a substantially U-shape.
A shaft support 37 wound in a coil shape is formed at the base of the shaft support 37 .

Pressing portions 38 bent in a U-shape are integrally formed on both sides of the front end of the spring body 35, and a grip portion 39 bent upward in a U-shape is formed in the middle of the pressing portions 38 on both sides. There is.

Next, reference numeral 40 denotes a movable blade support body molded from synthetic resin in a U-shaped plane.
is mounted on a shaft, both shaft supports 37 of the spring body 35 are fitted and supported on this support shaft 41, and locking portions 36 at both ends of this spring body 35 are supported.
A retaining portion 42 is formed at the rear edge to which the retaining portion 42 is engaged.

The plow blade body 15 is located at the bottom of the rear surface of this movable blade support body 40.
A pressure contact portion 43 having elasticity that presses the knob 21 toward the inner surface of the cover 7 via the elastic piece portion 17 is integrally protruded.

Furthermore, a holding protrusion 44 having an arcuate tip is formed outwardly at the front upper part of both sides of the movable blade support 40, and this holding protrusion 44 has a shaft supporting piece 45 protruding from both sides of the inner surface of the cover 7. They are inserted into and held in the respective shaft support holes in the upper part of the shaft.

The protruding ends of the holding protrusions 44 are removably engaged with the upper surfaces of locking protrusions 46 protruding from both sides of the front surface of the partition wall 8 of the lower case member 4.

Next, the operation of this embodiment will be explained.

When assembling, the knob body 21 is placed on the inner surface of the cover 7 by inserting its knob part 22 into the guide hole 14, and the elastic piece part 17 of the plow blade body 16 is brought into contact with the upper surface of the knob body 21 and engaged. The portion 19 is engaged with the locking portion 23 of the knob body 21.

Then, straddle this plow blade body 16 and attach the fixed blade 25 to the cover 7.
A clipper blade portion 26a is fixed to the front inner surface of the blade so as to protrude from the front edge, and the plow blade body 16 is moved forward and backward by sliding on the lower surface of the fixed blade 26.

Further, the holding protrusion 44 of the movable blade support 40 is engaged and held in the shaft support hole of the shaft support piece 45 protruding from the inner surface of the cover 7.

Both ends of a support shaft 41 mounted on the movable blade support 40 are engaged with the rear edge of the movable blade support 40, and the spring body 35 with the shaft support 37 fitted to the support shaft 41 is Fixed blade 26
At the same time, the locking part 36 is elastically engaged with the engaging part 42 of the movable blade support 40, and the movable blade support 40 is attached to the inner surface of the cover 7.

The elastic pressure contact portion 43 of the movable blade support 40
The connection between the knob body 21 and the plow blade 16 is maintained by pressing the elastic piece part 17 of the plow blade body 16 and keeping the locking part 23 engaged with the engaging part 19 of the elastic piece part 17. There is.

In this state, pull the gripping part 39 of the spring body 35 upward against the elastic force, align the movable blade 27 on the fixed blade 25, and hold the spring body 35.
When the tension on the gripping part 39 is released, the pressing part 38 of the spring body 35 is guided to the guiding part 31a of the movable blade operating body 40, the pressing part 38 is engaged with the engaging part 32, and the movable blade 27 is held at a predetermined position. The fixed blade 26 is pressed into contact with the movable blade operating body 29, and the eccentric rotating portion 11 of the rotation transmitting body 10 is engaged with the retaining groove 33 of the movable blade operating body 29.

Cover 7 of clipper blade assembly 5 assembled in this way
The clipper blade assembly 5 is mounted by engaging the engagement protrusion 13 in the recess 12 of the case body 1 and engaging the holding protrusion of the movable blade support 40 in the upper surface of the locking protrusion 46.

When the assembled electric motor 2 is driven in this way, the rotation transmission body 10 rotates, and the eccentric rotation part 11 of this rotation transmission body 10 rotates.
The movable blade operating body 29 that is engaged with the engagement groove 33 is reciprocated in the left-right direction, and the movable blade 27 is slid along the fixed blade 25 to perform the clipper operation.

When plowing is to be done, the knob 22 of the knob body 21 is pressed inward to disengage the articulated part 24 and the articulated part 25, and the knob 22 is moved forward. Since the engagement hole 19 of the elastic piece portion 17 of the plow blade body 16 is engaged with the engagement protrusion 23 of the knob body 21, the plow blade portion 1 of the plow blade body 16
The clipper blade 6a extends to the lower surface of the clipper blade portion 26a of the fixed blade 26 to enable plow cutting.

When the plow blade body 16 slides, the protrusion 18 moves against the fixed blade 26.
The contact portion l1 is on the lower surface of the plow blade, and the lower surface of the tip side of the plow blade body 16 engages with the stepped portion 15 of the cover 7, so there is little contact resistance due to two-point contact, there is no runout, and there is stable sliding. Plow blade body 1
6 is in contact with the stepped portion 15, the tip of the plow blade portion 16a is brought into close contact with the lower surface of the fixed blade 26 by its elasticity, and the plow blade portion 16a of the plow blade body 16 and the clipper blade portion 26a of the fixed blade 26 are No hair gets caught between the two.

Further, the knob 21 is pressed against the cover 7 by the elastic force of the pressure contact part 43 of the movable blade support 40, and the engagement between the articulated part 24 and the articulated part 25 is released against the elastic force of the pressure contact part 43. This makes it possible to control the operation of the knob 21.

In addition, the plow blade body 16 only engages the locking portion 23 with the engaging portion 19 of the elastic piece portion 17, and the elastic piece portion 17 is pressed against the pressure contact portion 43 of the movable blade support 40, so that the knob body 16 There is no need to fix the elastic piece part 17 to the knob body 21 by explosive bonding or the like without disengaging the elastic piece part 17 from the knob body 21.

In addition, when cleaning the cover 7, when the cover 7 is pulled downward, the holding protrusion 44 is disengaged from the locking protrusion 46 due to the elasticity of the movable blade support 40, and the engaging protrusion 13 is removed from the recess 12, and the clipper blade assembly is assembled. 5 can be removed.

Next, the grip part 39 of the spring body 35 is pulled upward against the elastic force, the pressing part 38 is removed from the engagement part 32 of the movable blade 27, and the movable blade 27 can be extracted and cleaned.

Also, for assembly, as described above, pull the grip part 39 of the spring body 35, insert the movable blade 27 below the pressing part 38, and
is placed on the fixed blade 26 and the grip part 39 is released.

In this state, the pressing portion 38 of the spring body 35 is guided by the guiding portion 31a and engaged with the engaging portion 32, and the movable blade 27 is attached.

Next, the cover 7 is attached to the case body 1.

Furthermore, although the electric motor 2 has been described as a drive source in the above embodiment, it is also possible to use an electromagnet to cause the movable blade operating body 29 to reciprocate with a vibrator that reciprocates left and right by electromagnetic operation.

Further, the articulated portion 25 of the knob body 21 is formed in a concave shape,
Although the articulating portion 24 of the case body 1 is formed into a protruding shape, the articulated portion 25 may be formed into a protruding shape and the waist moving portion 24 may be formed into a concave shape.

According to the present invention, an articulated part that removably engages with an articulated part formed on the case body is formed on the lower surface of the knob body, and a locking part is provided protrudingly on the upper surface, and the knob body is attached to the plow blade body. The articulating part and the articulated part are engaged with a movable blade support that forms an engaging part that engages with the locking part and holds a spring body that presses the movable blade in a slidable manner against the fixed blade. Since the elastic press part that presses the plow blade body in the direction of holding it is integrally provided, moderation of the plow blade body can be obtained without separately providing a member such as a coil spring to maintain joint movement. The number of parts is small and assembly is inexpensive, and since the plow blade body is pressed into contact with the knob body, the engagement between the locking part of the knob body and the engaging part of the plow blade body is maintained, and the plow blade body is engaged with the locking part. This has the advantage that there is no need to strengthen the engagement with the part.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention, and is a plan view of the blade assembly of an electric clipper, Fig. 2 is a sectional view of the same, and Fig. 3 is a sectional view showing the state of the plow blade when it is advanced. , FIG. 4 is an exploded perspective view of the same. 1... Case body, 16... Plow blade body, 16a... Plow blade part, 19... Engagement part, 21... Knob body, 23... Locking part, 24... Articulating part, 25... Wave articulating part, 26... Fixed blade, 26a... ... Clipper blade part, 27 ... Movable blade, 35 ... Spring body, 40 ... Movable blade support, 43 ... Elastic pressure contact part .

Claims (1)

[Scope of utility model registration request] A case body, a fixed blade attached to the tip of the case body, a movable blade slidably provided on the fixed blade, a spring body that presses the movable blade against the fixed blade, and the case body. a movable blade support that is engaged with and holds the spring body; a plow blade body having a plow blade part that is slidably provided along the fixed blade and that moves forward and backward into the clipper blade part of the fixed blade; a knob body slidably provided on the case body to move the plow blade forward and backward, and an articulated part removably engaged with an articulated part formed on the case body on the lower surface of the knob body. a locking part is formed on the upper surface thereof, an engaging part is formed on the plow blade body to be engaged with the locking part of the knob body, and the movable blade support body is provided with a locking part protruding from the upper surface thereof, and the movable blade support body has a locking part that is engaged with the locking part of the knob body. An electric hair clipper characterized by integrally protruding an elastic pressure contact part that presses the plow blade body in a direction to maintain engagement with the plow blade body.