JPS6140434B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a rotary electric shaver equipped with a sharpening blade, in which the main components such as the sharpening blade body, the drive motor, and the rotary blade body for shaving are provided. This relates to an overall structure that is easy to assemble.

Hereinafter, one embodiment of the present invention will be described based on the drawings.A main body case 1 of a razor is composed of two halves 2 and 3 made of synthetic resin, which are divided into front and back parts.
The front half-split case 2 has a cutout in the upper part. The block-shaped edge blade body shown in figure 5 includes a front plate 10 in which a edge blade body 8 consisting of a linear fixed blade 6 and a movable blade 7 is exposed through an upper elongated window 9; The back side protruding shaft 11 of this front plate 10
A drive lever 12 is pivoted approximately in the middle and has its tip engaged with the movable blade 7, and the front plate is fixed with a screw 13 so as to cover the drive lever 12 and the rear surface of the edge cutting blade 8. Rear plate 14 fixed to 10
A gap 15 is formed between the front plate 10 and the rear plate 14. Furthermore, a switch knob 18 of the motor 17 is installed in a shallow rectangular recess 16 formed on the surface of the front plate 10 so as to be able to slide up and down, and a short-circuiting contact piece in the shape of a triangle having expansion elasticity is attached to the switch knob 18 of the motor 17. 19 is attached. The drive lever 12 has a forked engagement piece 20 projecting at right angles from its lower end.
20 is provided in a protruding manner, and its upper part has a tapered surface that expands outward, making the opening wide. In order to incorporate the edge cutting blade 5 assembled separately in this way into the main body case 1, the gap 1 of the edge cutting blade 5 must be
5 is the front wall portion 22 of the front half-split case 2;
It is inserted from above, as shown in FIG. 4, so as to sandwich the upper side and both side edge walls 24, 24 of the cross-shaped notch. In this way, the sharpening blade body 5
2 and both side edge walls 24, 24 as guide parts, it can be freely slid to two upper and lower positions via a switch knob 18, as will be described later. And switch tsumiko 18
The short-circuiting contact piece 19 provided in the fork has its forked tip end connected to the insulating substrate 2 fixed to the inner surface of the front half-split case 2.
It is designed to come into sliding contact with a pair of parallel copper foil contact pieces 26, 26 which are printed and wired on 5. 17
is a motor, and its case portion 17' is made of synthetic resin, and a circular portion 27 that is one step smaller than the other is projected from the top surface, and a pair of mounting screw tubes 28, 28 are provided on this circular portion 27. At the same time, a pivot shaft 29 is integrally provided at the apex position of the threaded cylinders 28, 28 so as to form a triangle.
Reference numerals 30 and 30 indicate positioning protrusions protruding from the circumferential surface of the circular portion 27 located outside the threaded cylinders 28 and 28. 31 is a mounting bracket bent in a 〓 shape,
The ring portion 32 is fitted into the circumferential stepped portion 33 of the circular portion 27, and the notches 34, 34 on the inner edge are fitted and engaged with the positioning protrusions 30, 30. This mounting bracket 31 has a vertical surface part 35, and a mounting piece 37 having screw insertion holes 36, 36 on both sides of the lower end.
37 is formed. A dowel 4 is provided in the center to press the back surface of the rear plate 14 of the sharpening blade body 5 . Reference numeral 38 denotes a vibration lever for actuating the drive lever 12, which is made of synthetic resin, is pivoted to the pivot shaft 29 through a shaft hole 39 drilled slightly forward, and has a spherical engagement protrusion 40 at the front end. With,
An oval drive hole 41 is formed at the rear. 4
2 is a rotation shaft fixed to the motor shaft 43, and an eccentric cam 44 fixed to the lower end is fitted into the drive hole 41, so that whenever the motor rotates, the vibration lever 38
is being vibrated back and forth. Reference numeral 45 designates a synthetic resin upper lid having a threaded peripheral wall 46 of an outer cutter frame to which an outer cutter, which constitutes one side of the rotary cutter body serving as a shaving blade, is attached;
A cylindrical portion 47 from which the rotating shaft 42 protrudes is formed in the center, and an annular wall 48 is formed on the lower surface except for the front portion. Therefore, when the upper cover 45 is placed on the upper surface of the motor case 17' so as to cover the vibrating lever 38, the lower edge 48' of the annular wall 48 just touches the ring portion 32 of the mounting bracket 31. Then, insert the fixing screws 49, 49 through the holes 50, 50 of the upper cover 45, and screw the threaded cylinders 28, 28 on the upper surface of the motor case.
When screwed in, it is completely fixed to the motor case 17', and at the same time, the ring part 32 is clamped and fixed between the annular wall lower edge 48' and the motor case peripheral step part 33, and the mounting bracket 31 is attached and fixed. Ru. In this way, the upper cover 45 having the shaving blade part 52 and the motor 17 are combined, and the vibration lever 38, the mounting bracket 31, etc. are attached between them, and the two are made into one block. A driving section main body 53 shown in is constructed. Next, to explain how to attach the drive section main body 53 to the front half-split case 2, a pair of mounting bosses 54, 54 are protruded from the back side of the front half-split case 2. ,
The vertical surface portion 3 of the mounting bracket 31 is attached to the bosses 54, 54.
5. Apply the mounting pieces 37, 37 provided at the lower ends of both sides,
By screwing in the two screws 55, 55, the drive unit main body 53 is fixed.
Then, when installing, the rear plate 14 of the blade body 5 is
The dowel 4 formed on this vertical surface abuts against the rear surface of the rear plate 14 as shown in FIG. 1, and prevents it from deflecting outward due to the expansion elasticity of the shorting contact piece 19 of the mold. In addition, the front case 2 is divided into two parts by the upper lid 45.
The top opening 56 is closed. Therefore, the shaving blade 5 and the drive unit main body 53 having the shaving blade 52 are assembled and attached to the front half-split case 2, which is one of the cases, and it becomes a semi-finished product. It is convenient to test the operation of the motor 17 and the cutting blade 5 . Finally, the other rear half-split case 3 is superimposed on the front half-split case 2 and secured with screws to complete the product.

Next, to explain the operation of the shaving blade and the shaving blade in the razor body of the present invention assembled in this manner, normally the switch knob 18 is located in a rectangular recess as shown in FIG. In this position, the shorting contact piece 19 is in the OFF position without shorting the pair of copper foil contact pieces 26, 26, and the forked engagement piece 20 of the drive lever 12,
20 is apart from the tip of the vibration lever 38 and is not engaged with it. Next, when the switch knob 18 is slid upward, its tip edge 18' comes into contact with the upper inner edge 16' of the surface recess 16, and the shorting contact piece 19 short-circuits between the pair of copper foil contact pieces 26, 26. , the motor 17 is rotated by the battery 57. As a result, the rotating shaft 42 rotates, and the eccentric cam 44 causes the vibration lever 38 to swing back and forth. Since an inner cutter (not shown), which is the other blade of the shaving blade, is coupled to the rotating shaft 42, this rotates, and the shaving blade portion 52 operates in cooperation with the outer cutter. However, at this time, the edge cutting blade 5 itself is not moving upward, so the tip of the vibration lever 38 and the lower end engagement part of the drive lever 12 are not engaged, so the edge cutting blade 5 itself is not moved upward. Do not work. If you want to operate the sharpening blade 8, press the switch knob 18 upwards, and the upper edge 1 of the switch knob 18 will be pressed upward.
8' and the inner edge 16' of the upper end of the surface recess 16 are in abutting engagement with each other, so that the entire blade body 5 can be moved upwardly via this switch knob 18 as shown in FIG. stand out. At this time, the distal end spherical engagement portion 40 of the vibrating lever 38
0, and the power from the vibration lever 38 can be transmitted. Since the short-circuiting contact piece 19 is configured to short-circuit between the copper foil contact pieces 26, 26 even when the sharp blade body 5 projects upward, the motor 17 is driven and the inner blade is rotated. At the same time, the reciprocating vibration of the vibrating lever 38 is transmitted to the drive lever 12, and the drive lever 12 is rotated by the protruding shaft 11, which is the shaft support thereof.
The movable edge cutting blade 7 engaged with the tip is reciprocated with the fixed blade 6 as a fulcrum, and edge cutting is achieved by moving the edge cutting movable blade 7 reciprocatingly. At this time, that is, when the edge cutting blade 5 protrudes, as shown in FIG. As shown in FIG. 2, the lower end of the front plate 10 is about to come off the front wall 22. Then, there is a risk that the entire sharpening blade body 5 will fall forward, but the dowel 4 provided on the vertical surface portion 35 of the mounting bracket 31 presses the back of the rear plate 14 and prevents this.

Next, in order to retract the edge cutting blade 5 and further disable the edge cutting blade 5 and the shaving blade 52, the switch knob 18 can be operated in the opposite manner to that described above.

The operation is as described above, and the overall structure is as described above, with a block-shaped edged blade inserted into the front wall of one of the two halves of the case so that it can slide up and down. On the other hand, the horizontal part of the square-shaped metal fitting is sandwiched between the top cover equipped with the shaving blade and the motor case to form a block-shaped drive unit main body, similar to the above-mentioned shaving blade body. Fixing both lower ends of the vertical surface part of the mounting bracket to the back surface of the front wall of the one half-split case using mounting screws, and at this time, pressing the rear surface of the edge blade body with the vertical surface part, It can be easily assembled by stably mounting the cutting blade body and finally superimposing and fixing the other half case to the one half case.

Here, the structural feature is that the sharp blade can be easily installed by simply inserting it into the front wall of the halved case from above, and furthermore, the drive body described above can be attached to the two parts using the mounting bracket attached to it. It can be easily fixed to the split case and is extremely easy to assemble. Therefore, work efficiency is greatly improved, and the electric shaver can be provided at low cost, making it of great industrial value.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view of the main part when the edge cutting blade is not in operation, FIG. 2 is a partial sectional view when the edge cutting blade is protruding upward, and FIG. an operational plan view showing the engagement relationship between the blade body and the vibration lever;
Fig. 4 is an exploded view showing the assembled configuration, Fig. 5 is an exploded perspective view of the parts constituting the main body of the drive section on the edge cutting blade side,
Figure 6 is a perspective view from the rear of the edge cutting blade, Figure 7
The figure is an assembly diagram showing how to attach the drive section main body to be attached to the inner surface of the front half-split case. 52...Shaving blade, 45...Top lid, 17'...
...Motor case, 31...〓-shaped metal fitting, 32...
Horizontal part, 53 ...Drive unit main body, 5 ...Edge blade body, 2 ...One halved case, 22...Front wall, 35...Vertical surface part, 55, 55...Mounting screw, 3 ...The other 20% case.

Claims (1)

[Claims] 1 The horizontal part of the square metal fitting is sandwiched between the top cover with the shaving blade and the motor case to form the main body of the drive unit, and the shaving blade is attached vertically to the front wall of one of the two halves of the case. It is slidably clamped, and the above
Fasten both sides of the lower end of the vertical surface of the shaped metal fitting to the back side of the front wall with mounting screws, and press the back surface of the edge cutting blade with this vertical surface, and attach the other half case to the two half case. An electric razor made by polymerization.