JPS6219337Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to an electric shaver.

[Background technology]

FIG. 11 shows the switch structure of a conventional electric shaver. That is, a switch handle 62 is provided in an opening 61 provided in the casing 60, a click portion 63 protrudes inwardly of the switch handle 62, and a switch contact portion 64 is further provided inwardly.

However, this electric shaver has the disadvantage that the switch handle 62 has a small surface, making it difficult to locate the switch and difficult to operate the switch. Further, since the switch contact portion 64 and the click portion 63 are arranged in the thickness direction of the casing 60, there is a drawback that the thickness of the switch portion becomes thicker and the diameter of the casing becomes larger.

[Purpose of invention]

Therefore, the purpose of this invention is to provide an electric shaver that is easy to use because the position of the switch is easy to understand, and the diameter of the casing can be reduced.

[Disclosure of invention]

This invention has a cylindrical shape, and has first to third openings formed at intervals in a substantially straight line in the axial direction of the peripheral wall surface of the cylindrical shape, and a clickable hole is formed in the first opening. a casing having an elastic protrusion formed therein; and a second opening having a contact portion formed at its tip and attached to an inner surface between the second opening and the third opening of the casing. a contact spring for a switch having a bent part with an inclined part located at the casing; A switch handle having a hook that is slidably locked in the same direction as the switch handle and a click protrusion that engages with the elastic protrusion by a sliding action and the inclined part are fitted into a switch handle having a switch protrusion and an upper end opening of the casing. A motor is attached to the blade mount and has a motor terminal, and a current-carrying metal fitting is connected to the motor terminal and has a contact portion facing the contact portion.

An embodiment of this invention is shown in FIGS. 1 to 10. That is, in this electric shaver, the blade mount 2 is connected to the upper opening of the casing 1, which has an octagonal outer surface.
are fitted and fixed to the casing 1 by screws 3 and 3', but screws 4 and
A motor 5 is attached by 4', and a joint 7 provided on a motor shaft 6 protrudes from a central hole 8 of the blade mount 2. Then, the inner cutter body 9 of the joint 7 is fitted, and the outer cutter body 10 is screwed onto the blade mount 2 through the screw groove 11, and the inner cutter (not shown) slides inside the net-shaped outer cutter 12. I'm starting to do that. Further, a current-carrying metal fitting 15 is press-fitted and supported by a rib 14 of a partition wall 13 inside the casing 1, and an anode metal fitting 16
is press-fitted and supported by the rib 17, and the motor 5
By mounting the motor terminals 18 and 19 on the casing 1, the motor terminals 18 and 19 at the rear end of the motor 5 are in pressure contact with the current-carrying metal fitting 15 and the anode metal fitting 16.

A rectangular recess 20 is formed in the axial direction of the side of the casing 1, and a first opening 21, a second opening 22, and a third opening 23 are formed in the recess 20 at predetermined intervals in a substantially straight line. and the first opening 21
As shown in FIGS. 3 and 9, an elastic protrusion 24 is integrally formed parallel to the axial direction of the casing 1, and an inner surface of the side wall 25 between the second opening 22 and the third opening 23 is A groove 26 is formed (FIG. 4), and an intermediate mounting portion 27a of the strip contact spring 27 is inserted into this groove 26.
is press-fitted and held, the bent part 29 with the inclined part 28 at the tip thereof is located in the second opening 22, and a contact part 30 is formed further ahead of the bent part 29, and this contact part 30 is It faces the contact portion 31 formed on the current-carrying metal fitting 15 . As shown in FIG. 1, the switch handle 32 has a rectangular plate shape with knurling 33 formed on its front surface, and has knurling holes 33 formed on its back surface corresponding to the first opening 21, second opening 22, and third opening 23, respectively. A pair of hooks 34 are formed, and a first
A click projection 35 is formed corresponding to the second opening 21 (FIG. 3), and a switch projection 36 is formed corresponding to the second opening 22. When each hook 34 of this switch handle 32 is pushed into the first opening 21, the second opening 22, and the third opening 23, each hook 34 is inserted into the first opening 21, the second opening 23, and the second opening 23. 22 and the inside of the side edges of the third opening 23, the handle body is housed in the recess 20 and can slide within a predetermined range in the axial direction of the casing 1. Also, along with this sliding, the switch protrusion 36 moves the bent portion 2 due to the dimensions.
At the same time as pressing the inclined part 28 of 9, the click protrusion 35
moves over the protrusion 24a of the elastic protrusion 24 with a click motion. As the bent portion 29 moves, the contact portion 30 comes into contact with the contact portion 31 of the current-carrying metal fitting 15, and the switch handle 32 is turned on. With this configuration, the switch handle 32 occupies a large space on the surface of the casing 1, making it easy to see the switch position and making it easy to operate, and since the click part and the switch part are located in parallel, the switch part becomes thin. , the diameter of the casing 1 can be reduced. Also, the first opening 2
1. The side walls 25, 37 of the casing 1 between the second opening 22 and the third opening 23 are connected to the first opening 2 by the hook 34 of the switch handle 32.
1, supporting the lateral pressure applied to the second opening 22 and the third opening 23, and supporting the lateral pressure applied to the second opening 22 and the third opening 23;
The side wall 25 between the openings 23 has a function of supporting the contact spring 27, and does not inhibit strength and spring support compared to the conventional case. Furthermore, when disassembling the handle 32, this can be easily accomplished by prying open the third opening 23.

A cylindrical short-circuiting fitting 38 with a flange is fitted into the lower end opening of the casing 1, and a retaining piece 39 cut and raised on the side surface of the shorting fitting 38 locks into the locking hole 40 of the casing 1. At the same time, the contact piece 41 cut and raised at the lower end of the switch spring 27 comes into pressure contact with the shorting fitting 38 (Fig. 3). Casing 1
When the battery 42 is stored from the lower end opening and the lower end opening is covered with the battery cover 43, the cathode metal fitting 44 provided on the battery cover 43 contacts the cathode of the battery 42 and simultaneously contacts the shorting metal fitting 38. Therefore, electrically, the cathode side of the battery 42 is the cathode metal fitting 44,
When the switch handle 32 is in the on state, the energizing metal fitting 15 is transmitted from the switch spring 27 through the shorting metal fitting 38.
Electricity is conducted to the motor terminal 18 through the motor terminal 18. On the other hand, when the battery 42 is loaded, its anode 42a is connected to the anode metal fitting 16.
When the switch handle 32 is in the ON state, the power supply circuit of the motor 5 is closed, the motor 5 is operated, and the inner cutter body 9 is rotated, thereby changing the operating state of the electric shaver. becomes.

The outer periphery of the lower end opening of the casing 1 has a structure in which a small-diameter cylindrical portion 45 is stepped, and an L-shaped locking groove 46 is formed on the outer periphery, and a clip rib 47 is formed at a position perpendicular to the locking groove 46. 4
7 has a recess 49 inside the cylindrical portion 45.
is formed to form a thin part that is easily elastically deformed (Fig. 6). On the other hand, the battery cover 43 has a rectangular cylindrical outer shape that matches the outer shape of the casing 1, and has a locking protrusion 50 formed on the inner peripheral surface of the cylindrical shape corresponding to the L-shaped groove 46 and corresponding to the clip rib 47. A rib 51 is formed thereon, and the cathode fitting 44 is press-fitted into a fixing rib 52 at the bottom. When the battery cover 43 is fitted to the cylindrical portion 45 by passing the locking protrusion 50 through the L-shaped groove 46 and rotating the battery cover 43 along the L-shaped groove 46, the rib 51 is inserted into the clip rib 4.
7 and locks, resulting in a closed state. At this time, the central spring 53 of the cathode metal fitting 44 contacts and supports the cathode of the battery 42, and the side springs 54 touch and support the shorting metal fitting 38.
contact the collar 55. To remove the battery cover 43, just rotate the battery cover 43 in the opposite direction. Conventionally, the battery cover 43 has a structure as shown in FIGS. 12 to 16. That is, in FIGS. 12 and 13, a vertical slit 66 is formed in the casing 65, a piece 67 between them is made elastic, and a click part 67' is provided on this piece to fit the battery cover 68. Further, as shown in FIG. 14, elastic projections 69 for clicking are provided on the battery cover 68', and since these require a gap 70 with respect to the battery 71 for the deflection of the piece 67 and the elastic projections 69, the casing 1, that is, the diameter of the grip has become larger. Furthermore, in FIGS. 15 and 16, since the click portion 72 is constructed using a spring component, the diameter of the casing 65' is increased by the holding structure of the locking pawl 73 of the click portion 72. In contrast, in this embodiment, a click is formed within the thickness of the casing of the cylindrical part 45 for attaching the battery cover, so the diameter of the grip part can be reduced, and the shorting fitting 38 is fitted, so the strength is increased. Does not decrease.

[Effect of idea]

As described above, according to the electric shaver of this invention, the first to third openings are formed at intervals in a substantially straight line in the axial direction of the cylindrical peripheral wall surface. a casing having an elastic protrusion for clicking formed in the first opening; and an inner surface between the second opening and the third opening of the casing, the casing having a contact point formed at the tip thereof; a contact spring for a switch having a bent part with an inclined part, which is attached to the second opening and located at the second opening; and a peripheral wall surface of the casing so as to cover the first to third openings. A switch having a hook disposed on a surface of the casing and slidably engaged in the same direction as the axial direction of the casing, and a click protrusion that engages with the elastic protrusion by a sliding action and a switch protrusion that presses the inclined part. A handle, a blade mount fitted into the upper opening of the casing, a motor attached to the blade mount and having a motor terminal, and a contact part connected to the motor terminal and facing the contact part. Since the switch handle occupies a large space on the surface of the casing, the switch position becomes clear and easy to operate, and since the click part and the switch part are located in parallel, the switch part is thin. This has the effect of reducing the diameter of the casing.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an embodiment of this invention, Fig. 2 is a sectional view taken along the - line, Fig. 3 is a sectional view of the electric shaver, and Fig. 4 is a casing showing how the switch spring is installed. The front view seen from the inside, Figure 5 is an exploded perspective view of the electric shaver, and Figure 6 is the third
Figure 7 is a cross-sectional view along the line in Figure 3, Figure 8 is a cross-sectional view along the line in Figure 3, Figure 9 is a cross-sectional view along the line in Figure 3, Figure 10 is the installation of the switch handle. Fig. 11 is a cross-sectional view showing the conventional switch structure, Fig. 12 is a cross-sectional view showing the click structure of the conventional battery cover, and Fig. 13 is a cross-sectional view taken along the line - , FIG. 14 is a cross-sectional view of another conventional example.
FIG. 5 is a partial cross-sectional view showing the click structure of another conventional battery cover, and FIG. 16 is a cross-sectional view taken along the line -1. 1...Casing, 2...Blade mounting base, 15...
Current-carrying metal fittings, 18, 19...Motor terminals, 21...
First opening, 22... Second opening, 23...
Third opening, 24... elastic protrusion, 27... contact spring, 28... inclined part, 29... bending part, 3
0, 31...Contact part, 32...Switch handle, 34...Hook, 35...Click projection, 3
6...Switch protrusion.

Claims (1)

[Scope of utility model registration request] The first to third openings are formed at intervals in a substantially straight line in the axial direction of the cylindrical peripheral wall surface of the cylindrical shape, and an elastic protrusion for clicking is formed in the first opening. a casing having a contact portion formed at its tip, and an inclined surface located at the second opening and attached to an inner surface between the second opening and the third opening of the casing. a contact spring for a switch having a bent part; and a contact spring disposed on the peripheral wall surface of the casing so as to cover the first opening to the third opening, and extending in the same direction as the axial direction of the casing. a switch handle having a hook slidably engaged with the casing, a click protrusion that engages with the elastic protrusion through a sliding action, and a switch protrusion that presses the inclined part; An electric shaver comprising: a blade mount; a motor that is attached to the blade mount and has a motor terminal; and a current-carrying metal fitting that is connected to the motor terminal and has a contact portion facing the contact portion.