JPS5810544Y2 - electric razor - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of an electric shaver that has a main-acting blade part and a diagonal blade part.In particular, the diagonal blade part is driven intermittently by switching operation of the operating knob attached to the main body case. The purpose of this invention is to improve the above-mentioned operability of the electric shaver and to ensure the intermittent drive state.

This type of electric shaver is configured to drive the sharp cutting blade only when necessary in order to effectively utilize its power consumption.Generally, as shown in Fig. 5, vibrations that drive the main blade are used. A connecting pin 51 that swings together with the vibrating rod 50 is provided on the upper part of the rod 50, and this connecting pin 51 is loosely fitted into the opening groove 53 of the bent portion of the rear end of the movable blade 52, and the edge cutting blade is When using the movable blade 5, by moving up and down the operating knob 54 attached to the outside of the main body case, the tip of the operating piece pivotably held by the operating knob is inserted into and removed from the opening groove 53, and the movable blade 5
The driving force is intermittently transmitted to 2.

However, in this conventional electric shaver, the tip of the operating piece is inserted and removed from the direction perpendicular to the swinging connecting pin 51 to transmit the driving force of the connecting pin 51.
At the time of disconnection, the operating lever was subjected to a strong impact force, and after long-term use, the shaft part wore out significantly, reducing transmission efficiency and producing abnormal noise.

This invention solves these drawbacks by bending the connecting body in the front-rear direction by riding on and lowering the connecting body with a trapezoidal protuberance provided on a part of the operating knob.
The opening groove of the sharpening blade part and the other end of the connecting body 14 engaged with the drive transmitting part 12 are operated intermittently, and this operating knob is set to be movable in the swinging direction of the connecting body.

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

Reference numeral 1 designates a main body case, 2 an outer cutter body of the active blade part 3 which is detachably attached to the upper end of the main body case 1, and 4 a sharp edge part fixed to the front wall of the outer cutter body 2.

An electromagnetic section 5 is housed within the main body case 1, and a vibrating rod 7 is provided opposite to the electromagnetic section 5 with a chassis 6 interposed therebetween.

The vibrating rod 7 is fixed to a pivot 8 so as to be able to freely vibrate, and the pivot 8 is press-fitted into a recess 9 of the main body case 1.

The vibrating rod 7 has an inner blade 11 of the main driving blade part 3 on the protruding shaft 10 at the upper end.
is removably fixed, and a connecting body 14, which is pivotally supported by a pivot pin 13 at the lower end of the chassis 6 in the main body case 1 and is swingably mounted, is fitted to the side projecting pin 12 serving as a drive transmission part. The matching groove 14a is always loosely fitted.

The connecting body 14 is made of synthetic resin, and its upper end is constantly pressed toward the edge of the blade part 4 by a spring 24 serving as an elastic member disposed between it and the chassis 6 that supports the vibrating rod 7. ing.

Reference numeral 15 denotes an operation knob that is attached to the front wall of the main body case 1 so as to be movable laterally, and includes a switching plate 16 on the inner wall of the main body case 1, and moves integrally therewith.

The switching plate 16 is molded from a synthetic resin with good slipperiness, and has a trapezoidal raised part on the upper end with an inclined part located on the opposite side to the moving direction of the operating knob 15 when switching to edge sliding. 17 are integrally formed.

The connecting body 14 can be bent in the front-rear direction, that is, in the direction of arrow A in FIG. 3, by riding on and lowering the raised portion 17 of the switching plate 16 of the operating knob 15.

The switching plate 16 is further formed with a clamping piece 18.18 that is split into two at both side ends, and when the operating knob 15 is moved from side to side, the tip of the clamping piece 18.18 is projected toward the main case 1 side. It engages and disengages from the locking protrusions 19 and 19, and serves to stabilize the stopping position of the operating knob 15.

Reference numeral 20 denotes a switch, which is composed of an individual fixed plate 20a and a movable plate 20b.When the switching plate 16 moves to the right from the position shown in FIG. It is set to be open.

The sharpening blade part 4 consists of a fixed blade 21 and a movable blade 22,
The rear end of the movable blade 22 is bent downward, and an opening groove 23 as shown in FIG. 3 is bored in this bent portion.

The connecting body 1 is inserted into this opening groove 23 by operating the operating knob 15.
4 is adapted to be inserted and removed from the direction perpendicular to the bent portion.

In the state shown in FIG. 4a in which the switching plate 16 has moved to the right from the state shown in FIG. , both the blade parts 3 and 4 are at rest.

When the operating knob 15 is moved to the left in FIG. 4 to the state b, the switch 20 is closed and the vibrating rod 7 swings.

This swinging of the vibrating rod 7 drives the inner cutter 11 of the main driving blade part 3 via the protruding shaft 10, but when the connecting body 14 comes into contact with the flat surface of the raised part 17 of the switching plate 16, the vibrating rod 7 Since the movable blade 22 is pressed toward the side, the upper end of the connecting body 14 having the fitting groove 14 does not engage with the opening groove 23 of the movable blade 22 on the edge portion 4 side, and the movable blade 22 is still at rest.

When the operating knob 15 is further moved to the left from this state, the connecting body 14 comes off the flat surface of the raised portion 17 as shown in C, and the connecting body 14 is bent forward by the forward pressing force of the spring 24, and the switching body 14 is bent forward. 16, and the connecting body 14
The tip of the vibrating rod 7 engages with the opening groove 23 of the movable blade 22.
The vibration is transmitted to the movable blade 22, and the edge cutting blade part 4 is also driven together with the main driving blade part 3.

In this way, when the connecting body 14 comes off the flat surface of the raised portion 17 and is located on the inclined surface, the connecting body 14 is constantly swinging at high speed in the directions of arrows P and P' in FIG. During the period when the body 14 moves in the direction of the arrow P', the raised portion 17
This will push the slope of the plane to the left.

At this time, since the moving direction Q of the operating knob 15 coincides with the swinging direction of the connecting body 14, the operating knob 15 is pressed by the connecting body 14 and tries to move to the left.

Next, during the period when the connecting body 14 moves in the direction of the arrow P, the operating knob 15 moves away from the slope of the raised portion 17.
The operating force required to move the object is reduced, and the object can be moved extremely smoothly in the direction of the arrow Q.

Now, from the manual operation speed of the operation knob 15, the connection body 14
Since the swinging speed of the connecting body 14 is extremely fast, the above-mentioned pressing and releasing by the connecting body 14 is repeated in a short period of time, and as a result, the operation lever 15 can be operated quickly. Because the pressure on the side is released,
The connecting body 14 is suddenly bent by the forward pressing force of the spring 24.

For this reason, the tip of the connecting body 14 having the fitting groove 14a suddenly engages with the opening groove 23 of the movable blade 22 of the edge cutting blade section 4, so that the movable blade 22 of the edge cutting edge section 4 rises to cut hair. The movements become sharper.

Next, when the use of the sharpening blade portion 4 is finished and the user wants to stop it, the operating knob 15 is moved to the right.

At this time, the connecting body 14 is also swinging, and this connecting body 1
4 moves in the direction of arrow P in the same direction as the moving direction of the operating knob 15, so it moves smoothly.

Next, during the period when the connecting body 14 moves in the direction of arrow P', the inclined surface of the raised portion 17 is pushed to the left, so the operating knob 15 is pressed by the connecting body 14 and tries to move to the left.

However, since the operation knob 15 is moving to the right,
The pressing force of the connecting body 14 acts as a force that causes the connecting body 14 itself to slide on the slope and ride on the raised portion 17, and furthermore, the moving direction of the operating knob 15 and the connecting body 14 at this time is opposite. Therefore, the movable blade 22 of the edge blade part 4 also steeply climbs onto the raised part 17 of the connecting body 14.
It also stops quickly, preventing half-hearted hair cutting operations.

As described above, according to this invention, one end of the connecting body 14 is fixed in a swingable manner within the main body case 1, and the other end is always engaged with the drive transmission part 12 of the vibrating rod 7, and this connection An elastic member 24 is disposed between the body 14 and the chassis 6 that supports the vibrating rod 7, and the other end of the connecting body 14 is constantly pressed towards the edge of the blade part 4, so that a part of the operating knob 15 A trapezoidal raised part 17 with an inclined part located on the opposite side to the direction of movement of the operating knob 15 when switching to edge sliding is provided, and this raised part 17 allows the connecting body 14 to be bent in the front-rear direction. Tonashi,
When the connecting body 14 is bent forward, the above-mentioned edge part 4
and the drive transmission unit 12, and
Tangential directions P and P' in the swinging of the connecting body 14 and operation knob 1
5 is set in the same direction as the moving direction of the cutting blade 4, the driving and stopping operations of the sharpening blade section 4 are steep, and the hair cutting operation is extremely reliable without being half-hearted as in the conventional case. You can cut your hair.

Furthermore, when the connecting body 14 bends forward, the connecting body 14 pushes the operating knob 15 in the moving direction, so that the switching operation of the operating knob 15 can be made smooth and light.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of an embodiment of this invention, Fig. 2 is a perspective view of its main parts, Fig. 3 is a partially enlarged view, Fig. 4 is an explanatory view showing the operating state of this invention, and Fig. 5. is a conventional example. 1... Main body case, 3... Active blade part,
4... Edge blade part, 6... Chassis, 7... Vibration rod, 12... Drive transmission part, 14... Concatenated body, 15... Operation extraction.

Claims (1)

[Scope of utility model registration request] The main drive blade part 3, the sharp edge part 4, the vibrating rod 7 that drives the main drive blade part 3, and the drive transmission part 1 provided on the vibration rod 7
2 and the above-mentioned sharpening blade part 4 intermittently.
4 and an operating knob 15 for operating the connecting body 14, one end of the connecting body 14 is swingably fixed in the main body case 1, and the other end is connected to the drive transmission unit 12. An elastic rod 24 is disposed between the connecting body 14 and the chassis 6 that supports the vibrating rod 7, and the other end is constantly pressed toward the edge-sliding blade portion 4. A part of the operating knob 15 is provided with a trapezoidal raised part 17 having an inclined part located on the opposite side to the direction of movement of the operating knob 15 when switching to edge shifting, and this raised part 17 allows the above-mentioned connecting body to By climbing up and down 14, this connected body 1
4 can be bent in the front-rear direction, and the opening groove 23 of the sharpening blade part 4 and the other end of the connecting body 14 that engages the drive transmission part 12 can be operated intermittently, and the operating knob 15 can be bent in the connecting body. The electric shaver is set to be movable in the same direction as the tangential directions P and P' in the swing of No. 14.