JPS603501B2 - electric razor trimmer device - Google Patents

Description

[Detailed Description of the Invention] In the present invention, the trimmer blade is in contact with the body of the electric shaver under normal conditions, and when in use, the trimmer blade opens and protrudes from the body by operating the operation plate. The present invention relates to an electric shaver trimmer device having a so-called pop-up type.

In this type of product, if the contact pressure between the trimmer blade and the skin acts in the direction of the return of the trimmer blade when it opens, it is necessary to prevent the trimmer blade from returning due to this contact pressure, and it is necessary to prevent the trimmer blade from returning in this state. If the blade does not wobble, it will make the user feel uneasy. Furthermore, it is necessary to prevent wobbling from occurring due to wear of various parts that occur over time. It is an object of the present invention to provide an electric shaver that satisfies each of the above points and allows the trimmer blades to be opened and returned by the same operation on the same operation panel. a trimmer block whose lower part is rotatably supported with respect to the main body housing; a return spring which urges the trimmer flock in one direction; and a return spring which is attached to the main body housing at the lower back of the trimmer block. The trimmer block consists of a gear that is rotatable only in the direction of the trimmer block and can be moved toward and away from the trimmer block, and an operation plate that is attached to the main body housing below the trimmer block and can be pushed backwards. The engagement part for the gear approaching the trimmer block is provided protruding between the gear and the operation plate, and the operation plate presses the engagement part of the trimmer block and the gear to rotate them. It is characterized by having a pressing surface on the back surface that allows the user to press the button.

The present invention will be described in detail below with reference to illustrated embodiments. Reference numeral 1 designates a main body housing in which an outer cutter frame 16 is installed at the upper end of the housing, and is divided into two parts at the front and rear, and as shown in FIG. 4 is provided with an opening 11 for attachment.

The upper part of the mounting opening 11 where the trimmer block 2 is disposed is wider than the lower part where the operation plate 4 is disposed.
At the upper part of the mounting closure 11, arc-shaped guide grooves 4 are formed on both inner surfaces by side covers 13 attached to the inner surface of the main body housing 1. Sekiguchi 11 for installation
A step 15 is formed on the inner surface of the main body housing on both sides of the lower part of the main body housing. A motor 61 is mounted inside the center of the main body housing 1, and an eccentric balancer 62 is mounted on the power shaft. Zero rotation of the eccentric shaft 63 protruding from the upper end of the eccentric balancer 62 is converted by known means into reciprocating vibration in the left-right direction of the main body housing of the main driver 64, thereby vibrating the inner cutter block 10. The inner cutter 65 provided with the inner cutter block 1 is attached to the outer cutter frame 16.
is glued to. It comes into sliding contact with the inner surface of the silk-like outer cutter 17 to cut the hair introduced from the outer cutter 17. In the figure, 12 is an outer cutter frame mounting base at the upper end of the main body housing l, and 18 is an outer cutter locking projection. As shown in FIG. 4, the operation plate which is attached to the lower part of the opening row 1 for installation of the main body housing so as to be vertically movable has an operation part 41 exposed from the installation entrance 11 to the front side of the main body frame on the front surface of the upper part. A slide hole 43 for a power slide switch is provided at the center of the operating section 41, and a backing is provided below the operating section 41 to prevent gaps from forming in the mounting gate 11 when the operating section 41 is moved upward. A plurality of elastic pieces 44 are integrally suspended via the slope portion 42. The protrusion 45 provided on the elastic piece 44 engages with an engaging portion (not shown in FIG. 2) provided on the main body housing side, thereby positioning the operating plate 4 when operating it up and down and providing clickability. A hiding plate 46 which is wider than the operating part 41 and approximately the same width as the upper end width of the mounting closure 11 is integrally provided at the upper end of the operation plate 4, and on both sides of the upper end of the hiding plate 46, there are shielding plates 46 from the back 3 side. Engagement pieces 47, 47 that protrude forward in a fishing manner, and presser projections 48, 48 that protrude upward on the back side are provided. As mentioned above, this operation plate 4 is mounted so as to be able to move up and down on the main body housing, and the cover plate 46 is housed in the step 5. A recess 49 extending over the entire length in the lateral direction is provided on the side, and only this part is made thin, and the operation plate 4 is inserted into the recess 49.
It is said that it can be elastically bent upwards and backwards. 50
There are four raised parts projecting rearwardly below the concave part 49, and are for reinforcement to prevent the back slope part 42 from bending during bending.

At the top of the mounting opening □ on the front side of the main body housing, there are a pair of guide grooves 14 and I provided oppositely on both sides.
A moving plate 3 to which guide plates 31, 31 of both machines are slidably attached to the trimmer block 4 is attached to the moving plate 3, and a trimmer block 2 whose lower ends on both sides are pivotally supported is attached to the moving plate 3. The moving plate 3 has a notch in the upper center, and a hole 33 is provided on both sides of the notch 32 having an arcuate upper end, and a spring arrangement space 34 that closes to the back side is formed near the hole 33. Recesses 35 and 36 are provided on both rear sides of the bottom surface of the notch 32, with which the engaging pieces 47 of the operation plate 4 engage. When the operation plate 4 is moved up and down, the moving plate 3 is also moved up and down along the guide book 14. The trimmer block 2 is composed of a fixed blade 22 and a movable blade 23 that slides with respect to the fixed blade 22. When the trimmer blade 21 is connected to the main drive element 64, the movement of the main drive element 64 is transmitted to the movable blade 23. A trimmer drive element 25, a push-up spring (not shown) for maintaining contact pressure between the movable blade 23 and the fixed blade 22, etc. are attached to the trimmer board 24, and a board cover 26 is attached to the back of the trimmer board 24. Both sides of the lower part of the trimmer base 24 are cut out, and a rotary shaft 17 protruding from both end faces of the center portion is located within the cutout. One rotating shaft 27
A spring 6 made of a torsion coil spring is attached to.
If both rotating shafts 27, 27 are installed in the shaft holes 33, 33 of the moving plate 3, the trimmer flock 2 is rotatably supported on the moving plate 3, and one end is attached to the trimmer flock 2, and the pond end is attached to the moving plate. 3
The trimmer flock 2 is urged in the return storage direction, that is, in the direction in which it is stored in the opening row 1 for mounting, by the spring 6 that is locked and stored in the spring arrangement space 34 . The trimmer flock 2 thus attached to the moving plate 3 is:/:
An engaging protrusion 28 hanging down from the lower end of the back side of the mar base 24 passes through the back of the moving plate 3 and projects downward.
This engaging protrusion 28 can freely engage with the holding protrusion 48 of the operating plate 4 and the teeth of a star-shaped gear 5 provided within the main body housing. The gear 5 is rotatably mounted on a shaft 7 installed laterally within the main body housing 1, and as shown in FIGS. 5 and 9, the shaft 7 has a square portion formed at the end thereof. 6
0 is slidably supported and attached to an engagement groove 19 long in the front-rear direction provided in the front main body housing 1 of the main body housing divided into front and rear halves, and is located on the back side of this shaft 7. The leaf spring 59 supported by the leaf spring support piece 201 of the main body housing is biased toward the front side of the main body housing 1, and the shaft 7 is pushed toward the rear side as indicated by the arrow in FIGS. 2 and 7. It is movable to the side against a leaf spring 59. The gear 5 is rotatably attached to the ratchet 7 constructed in this way, and one surface has an engagement tooth surface 53 of a fixed ratchet wheel 52 attached to the shaft 7 similarly to the gear 5. A mating engagement tooth surface 51 is provided. The fixed ratchet wheel 52J, the gear 5, and the coiled pressing force 54 that urges the engaging tooth surfaces 51, 53 of both in the direction of contact are a pair of pins 55, 55 installed in a hole 56 provided in the shaft 7. One of the pins 55 is disposed in between, and is fitted into a pin groove 57 provided in the tooth surface of the engagement tooth surface 53 to make the fixed J-fixed ratchet wheel 52 unrotatable. Both engaging tooth surfaces 51 and 53, which are engaged by a pressing spring 54 whose one end is in elastic contact with the other pin 55 and the other end is in elastic contact with the gear 5, have one surface of each tooth that is a vertical surface and the other surface that is an inclined surface. The gear 5 can only rotate in the direction shown by the arrow in FIGS. 5 and 6 with respect to the fixed ratchet wheel 522 fixed to the gear 5. Next, the operation will be explained. Figure 2 shows the off state, and from this state, while pressing the lock button 39 in the center, press the power supply 2 slide switch 40 arranged in the slide hole 13 provided in the operation part 41 of the operation panel 4. When it is slid to the right, the motor 6 is energized, and the inner cutter 65 is driven via the main driver 64.
At this time, the trimmer drive element 2 35, one end of which protrudes backward from the lower part of the trimmer flock 2, is located below the main drive element 64 and is not connected to the trimmer blade 21, which is composed of a fixed blade 22 and a movable blade 23. is never driven. From this state, push in the operating part 41 of the operating plate 4 and bend the upper part from the recess 49.The presser projection 48 at the upper end of the operating plate 4 moves the engaging protrusion 28 hanging down from the trimmer block 2 to the back side. Press to rotate trimmer block 2 against spring 6'. Further, by pushing the operating portion 41, the engagement protrusion 28 of the trimmer block 2 is moved forward by the leaf spring 59 and meshes with the four star-shaped gears 5, causing the gears 5 to rotate. When the trimmer block 2 begins to open from the main body housing 1 to a certain position, the engagement tooth surface 51 of the gear 5 seats on the engagement tooth surface 53 of the fixed ratchet wheel 52, and a ratchet engagement sound is obtained. If you release your hand, the operation plate 4 will return to its original position due to its own elasticity, but
The trimmer block 2 has a protrusion 28 that engages the non-reversible gear 5.
remains engaged, so it remains open. Furthermore, since the trimmer block 2 is biased in the return direction by the spring 6, the trimmer block 2 will not wobble even when the trimmer blade is applied to the skin in conjunction with engagement with the gear 5. . Furthermore, even if the contact surface between the engaging protrusion 28 and the tooth surface of the gear 5 is worn, the trimmer flock 2
There is no wobbling, even if the opening angle is slightly reduced. The backlash between the gear 5 and the fixed ratchet wheel 52 is also caused by the spring 6 urging the trimmer flock 2 in the direction of return rotation. Since it returns to its original state, it does not cause any wobbling during use. In the trimmer block 2 opened in this way, the trimmer drive element 25 is connected to the main drive element 64 as shown in FIG. 7, and the movable blade 23 begins to reciprocate.
To return the trimmer flock 2, push the operation plate 4 again. The presser projection 48 of the operation plate 4, which is pushed in deeper than when the trimmer flock 2 is opened, is in the seventh position.
As shown by the image line in the figure, the gear 5 is pressed instead of the engagement protrusion 28 of the trimmer flock 2, and the gear 5 is moved backward together with the shaft 7. Due to this retreat, the engaging protrusion 28 and the gear 5
The trimmer block 2 is disengaged from the trimmer block 2, and the trimmer block 2 returns to its original position under the force of the spring 6. In other words, the trimmer f0-lock 2 can be opened and returned by the same operation applied to the operation plate 4. After the operating plate 4 and trimmer block 2 return, the gear 5 that has moved rearward is returned to its original position by means of a plate 59. Further, in the trimmer block 2, by moving the operation plate 4 upward, the trimmer drive element 25 is connected to the main drive element 64, and the trimmer blade 21 is driven. When the operation plate 4 is slid upward, the trimmer flock 2 is pushed up together with the moving plate 3 sliding up the guide groove 14, and the trimmer drive element 25 is connected to the main drive element 64 as shown in FIG. Ru. At this time, the trimmer block 2 does not open and operates with the trimmer blade 21 close to the outer blade 17. Even if an attempt is made to push the operation plate 4 in this state, the engagement protrusion 28 will come into contact with the main driver 64, so the trimmer lock 2 will not open. To return to this state, slide the operation plate 4 downward.
Engagement piece 47 engaged with recess 35 of moving plate 3
Since the moving plate 3 is pulled down by the trimmer block 2, the trimmer block 2 returns to its original position. trimmer flock 22
The space below the moving plate 3 in the wide part of the mounting opening □1 roe, which is created by the upward movement of the moving plate 3, is filled with the cover plate 46 of the operation plate 4, so that no gap is created. Note that in this embodiment, the number of parts is reduced by using the elasticity of the operating plate 4 itself to return the operating plate 4 to the push-in state, but it is also possible to provide a dedicated return mechanism. Of course.
ZAs described above, in the present invention, when the trimmer blade is protruded, the support is reliable and there is no wobbling, and the user does not feel uneasy, and the trimmer blade can be moved only by operating the operation panel. It has extremely good operability since it can be extended and returned.

[Brief explanation of the drawing]

Fig. 1 is a front view of one embodiment of the present invention, Fig. 2 is a cutaway side view of the same as above, Fig. 3 is a perspective view of the main body housing and outer cutter frame, and Fig. 4 is a trimmer block, moving plate, and operation plate. FIG. 5 is an exploded perspective view of the gear and shaft, FIG. 6 is a vertical cross-sectional view of the main part during the operation of the same, FIG. 7 is a vertical cross-sectional view of the main part when the trimmer blade is opened, Fig. 8 is a longitudinal cross-sectional view of the main part in another state similar to the above, and Fig. 9 is a perspective view of the gear and its surroundings, where 2 is a trimmer lock, 4 is an operation plate, 5 is a gear, and 6 is a spring. Figure 3 Figure 1 Figure 2 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1. A trimmer block that is equipped with a trimmer blade and whose lower part is rotatably supported relative to the main body housing, a return spring that biases the trimmer block in one direction of rotation, and a trimmer block that is attached to the main body housing at the back of the lower part of the trimmer block. It is composed of a gear that can be rotated in one direction only and can be moved toward and away from the trimmer block, and an operation plate that is attached to the main body housing below the trimmer block and can be pushed backwards, The trimmer block has a protruding portion between the gear and the operation plate that engages the gear that is close to the trimmer block, and the operation plate presses the engagement portion of the trimmer block and the gear to separate them. An electric razor trimmer device characterized by having a rotating pressing surface on the back side.