JPS6216117B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an electric razor, which has a main body equipped with razor blades and a cap for protecting the razor blades that can be attached and detached, especially for women, and which has an elongated appearance. This is related to electric shavers.

[Background technology] As a type that reciprocates the razor blade up and down,
Electric razors for shaving women's unwanted hair, which are vertically elongated, have the following problems. In other words, in order to make the overall shape slender, the cap for protecting the razor blade also has a small diameter and elongated shape. However, it will be necessary to match the
At this time, in order for the main body and the cap to have a continuous external shape when the cap is attached, that is, to have the appearance of a single bar, the concave stepped portion of the mating contact portion provided on the main body should be In other words, it is necessary to make the diameter even smaller.

However, when the diameter of the fitting contact portion is made small in this way, the cap tends to wobble or come off unless its vertical dimensions are made longer. In this type of electric shaver, the maximum diameter is usually made as small as possible due to design considerations, and therefore the diameter of the mating contact part is also considerably small, so it has to be made even longer. . In addition, since the power transmission mechanism from the motor to the razor blade is installed inside this mating contact part, it is difficult to install a switch that would normally be installed near the mating contact part. Considering that,
The total length is quite long. Also, there are many problems in assembling the switch into the long and narrow body.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to prevent the cap from wobbling or coming off without increasing the overall length or diameter, and to improve the installation of the switch. It is an object of the present invention to provide an electric shaver that can be easily assembled.

[Disclosure of the Invention] The present invention provides a main body that includes a razor blade at the upper end and a razor blade drive motor mounted inside via a mounting base, and the upper end of the main body is detachable. The main body consists of a cap for protecting the razor blade, and a fitting contact portion into which the lower end opening of the cap fits is formed on the outer surface as a recessed step. A switch handle for the control switch is provided, and a mating contact part is provided on the back side which is longer in vertical dimension than the mating contact part on the front side, and the lower part of the mating contact part on the back side and the front side are provided. The above-mentioned mounting base is located on the same circumference as the switch handle, and is inserted into the main body from its lower end opening and is fixed in contact with a stepped surface provided on the inner surface of the main body by a spring bias from below. The switch is characterized in that the contact portion of the switch is arranged on the front surface, and the fitting contact portion of the main body is formed avoiding the disposed portion of the switch handle. The fitting contact area between the main body and the cap is increased, and the contact portion of the switch is incorporated into the main body using a mounting base for fixing the motor within the main body.

The present invention will be described in detail below based on the illustrated embodiment. As is clear from FIG. The whole body has an elongated bar-like appearance, and its front and rear surfaces have an arc-shaped horizontal section, and both side surfaces have an arc-shaped horizontal section with a small curvature that approximates a plane. A vertically reciprocating razor blade having blades on both left and right edges is attached to the upper end of the main body 1 housed in the cap 2.

The main body 1 has a cylindrical main body housing 10 whose upper end is narrowed to a small diameter, a ring-shaped cover 12 attached to the small diameter portion 11 at the upper end of the main body housing 10, and a blade mount connected to the upper end of the main body housing 10. 13 and a battery cover 14 that is attached to the lower opening of the main body housing 10, and a battery contact fitting 50, a contact fitting 48, a battery 4, a drive block shown in FIG. 6, etc. are housed inside. ing.

A switch handle 5 is provided in the front opening of the cover 12, and a base 2 is provided on one side of the upper end of the blade mount 13.
0, presser spring 22, fixed blade 24, and movable blade 23
A blade block consisting of a blade is attached together with a blade attachment/detachment button 26. A recess 21 at the upper end of the base 20 is locked to a hook 27 at the upper end of one side of the blade mount 13, and a blade attachment/detachment button 26 is attached to the blade mount 13 so as to be slidable up and down. The blade block is attached to the blade mount 13 by being supported. Pin 2 in the blade block
5 is a fixed blade 24, a movable blade 23, and a presser spring 22.
This is for attaching it to the base 20.

By engaging the hook 28 hanging down from the lower end of the blade mount 13 with the locking holes 9 formed on both sides and the back surface of the small diameter portion 11 of the main body housing 10 from the inner side, Main body housing 1
0, and the cover 12 is also attached to the main body housing 10 by locking the protrusion 58 protruding on the inner surface of the cover 12 to the outer surface of the locking hole 29. Here, the small diameter portion 11 in the main body housing 10 is extended downward on the back side than on the front side, so that the vertical dimension is longer.
On the side surface, the boundary line between the small diameter portion 11 and the portion below this is inclined.

The ring-shaped cover 12 has the same vertical dimensions at each part, and its upper and lower edges follow the lower edge of the small diameter part 11 of the main body housing 10, that is, the rear part is sloped on both sides more than the front part. It is made to be one step lower through the part. cover 1
Only the upper end of the small diameter portion 11 at the upper end of the main body housing 10 to which 2 is attached is exposed above the cover 12, and the vertical dimensions of the exposed portion are larger on the back than on the front. ing.

In this way, the vertical dimension is small at the front, becomes larger as it approaches the back on both sides, and is largest at the back. Mating contact part 6
For this reason, the cap 2 also has a shape in which the lower edge of the cap 2 protrudes downward more on the back side than on the front side, and the lower edges of both sides are sloped. Incidentally, the slopes on both sides of the fitting portion between the main body housing 10 and the cap 2 prevent fingers from getting caught when the cap 2 is attached or detached. A protrusion 30 provided on the inner surface of the cap 2
is in contact with the lower side surface of the blade mount 13, thereby suppressing the wobbling of the cap 2 in the left-right direction.

Now, in the main body housing 10, the switch handle 5 is disposed on the front side of the part where the lower part of the fitting contact part 6 is located on the back side, as described above. and the switch handle 5 are arranged on the same circumference,
A contact spring 40 located behind the switch handle 5 and driven by the switch handle 5 is attached to the front surface of the mounting base 15 of the drive block. The mounting base 15 is the main body housing 10
The device is inserted into the device from its lower end opening. As shown in FIG. 3, a shoulder 6 at approximately the center in the vertical direction is formed on a stepped surface 60 in the upper end of the main body housing 10.
1, the position of the drive block in the vertical direction is determined by the contact.

The upper end of the mounting base 15 protrudes upward from the upper end opening of the main body housing 10 and is housed in the lower part of the blade mount 13, and within this upper end is a face gear 3 integrally equipped with an eccentric cam 33.
2 is supported by a shaft 34 and stored. The upper part of the motor 3 is held in place by the legs 62 provided at the lower four corners of the mounting base 15, and the pinion 31 press-fitted into its output shaft meshes with the face gear 32 to rotate the face gear 32 and the eccentric cam 33 around the shaft. A connecting rod 35 that is rotationally driven, has an upper end connected to the movable blade 23, and a lower end loosely fitted to the eccentric cam 33.
The movable blade 23 is reciprocated up and down through. In the figure, 36 is a dustproof cover coupled to the upper surface of the mounting base 15, and 37 is a dustproof plate.

The mounting base 15 and the motor 3 are pushed upward by a spring 19 disposed on the upper surface of the holder 16 which is also inserted into the main body housing 10 from its lower end opening, and the stepped surface 60 and the stepped portion 61 It is fixed in place by contact with. The holder 16 itself is fixed to the main housing 10 by engaging the lower end protrusion 65 with a recess 66 on the inner surface of the main housing 10. By sequentially assembling the mounting base 15 and holder 16 from the bottom of the main body housing 10, each member to be incorporated into the main body housing 10, including the drive block, is arranged, making assembly easy. It is something.

The anode side of the battery 4 is housed in the holder 16. Note that when this holder 16 stores the cathode side of the battery 4, the battery 4 protrudes downward and the battery cover 1
4 cannot be installed. This also serves as a means to prevent the battery 4 from being inserted backwards. The battery cover 14 is removably attached by engaging protrusions 54 formed on the outer surface of the upper ends of the protrusions 53 on both sides of the battery cover into recesses (not shown) on the inner surface of the main body housing 10. 56 is an attachment/detachment operation section. The anode of the battery 4 is connected to the anode terminal of the motor 3 via a terminal fitting 39 soldered to the underside of the motor 3, and the cathode of the battery 4 is connected to a battery contact fitting 5 housed within the battery cover 14.
0. A hole 55 formed in a protrusion 53 attached to the inner surface of the main body housing 10 by engagement of the protrusion 49
The contact fitting 48 contacts the protrusion 51 of the battery contact fitting 50 through the contact fitting 48, which is arranged along the leg piece 62 of the mounting base 15 and whose upper end is inserted into the front surface of the mounting base 15 of the pair of insertion pieces 47, 47. Mounting base 15
The motor 3 is connected to the motor 3 through the contact spring 40, which has a contact plate 45 fixed to the contact plate 45 whose lower end contacts the contact fitting 48, and a movable contact plate 41 which contacts the contact surface at the upper end of the contact plate 45. It is connected to the motor case where it is the cathode terminal. The contact spring 40 has a fitting piece 44 at the lower end attached to the mounting base 1.
5 and is attached to the front surface of the mounting base 15, and a protruding piece 43 extending further from the fitting piece 44 comes into contact with the motor case. Also, click spring portions 4 are provided above and below the movable contact plate 41.
2,42 are integrated. A protrusion 59 protruding from the back of the switch handle 5 moves the movable contact plate 4 by sliding the switch handle 5 in the left and right direction.
By pressing 1 and bringing it into contact with the contact surface 46, the motor 3 is energized, and when it comes into contact with the click spring section 42, a click is applied to the operation.

[Effects of the Invention] As described above, in the present invention, in order to increase the mating contact area between the main body and the cap and prevent the cap from wobbling or coming off, the switch handle can adjust the vertical dimensions of the mating contact portion of the main body. so that it is smaller on the front side and larger on the back side,
Since the lower part of the mating contact part on the back and the switch handle are located on the same circumference,
Even without increasing the diameter or lengthening the overall length,
The switch handle can be placed near the fitting contact part, and the fitting contact part, which is a concave surface on the back, becomes a part on which you can put your finger when operating the switch handle. In addition, it is easier to operate the switch,
Furthermore, a contact portion of the above-mentioned switch is installed on the front surface of a mounting base for mounting the motor, which is inserted into the main body from its lower end opening and is fixed in contact with a stepped surface provided on the inner surface of the main body by a spring bias from below. , it is easy to incorporate the contact section driven by the switch handle even if the diameter of the main body is small.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a perspective view of the same with the cap removed, Fig. 3 is a longitudinal sectional view of the same, and Fig. 4 is a line taken along line X-X in Fig. 3. The line sectional view, FIGS. 5 and 6 are exploded perspective views of the same as above, and 1 is a main body, 2 is a cap, 3 is a motor, 5 is a switch handle, 6 is a fitting contact part, 10 is a main body housing, 11 is the small diameter part, 13 is the blade mount, 1
5 is a mounting base, 19 is a spring, 40 is a contact spring, 6
0 indicates a stepped surface.

Claims (1)

[Scope of Claims] 1. A main body having a razor blade portion at its upper end and a razor blade drive motor attached therein via a mounting base, and a razor blade that is detachably attached to the upper end of the main body. The main body consists of a cap for protecting the motor, and a fitting contact portion into which the lower end opening of the cap fits is formed on the outer surface as a recessed step. A switch handle in the switch is provided, and a mating contact part is provided on the back side which is longer in vertical dimension than the mating contact part on the front side, and the lower part of the mating contact part on the back side and the switch handle on the front side are provided. are located on the same circumference, are inserted into the main body from the lower end opening, and are fixed in contact with a stepped surface provided on the inner surface of the main body by a spring bias from below, An electric shaver characterized in that the contact portion of the switch is disposed on the front surface. 2. The device according to claim 1, characterized in that the fitting contact portion on the front surface of the main body and the fitting contact portion on the back surface of the main body are connected by a fitting contact portion with an inclined lower edge on both sides of the main body. electric razor.