JPS6020366Y2 - Electric razor case structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a case structure for an electric shaver that shares the cylindrical case of an electric shaver with a charging device and a battery-powered electric shaver incorporating a removable battery.

[Prior art]

Conventional electric razors did not have a structure that allowed the case of an electric shaver with a charging device and the case of a battery-powered electric shaver to be used in common, so each case had to be manufactured specifically for each case, which increased the cost of the case. [Purpose] Therefore, the present invention aims to reduce the cost of the case by commonly using the cases of both electric shavers, and to provide a practical electric shaver that facilitates after-sales service.

〔Example〕

(Charging Type) The present invention will be explained below based on the embodiments shown in the drawings. Figures 1 and 2 are longitudinal sections when the power source is a plug-in charging type, and Figures 3, 4, and 5. is a cross-sectional view.

The substantially cylindrical outer case 1 is formed with notches 2 and 2', and inside the outer case 1 is an inner case A divided into 1.2 parts.
7 and inner case B8 are housed therein.

Further, the inner cases A7 and B8 are exposed through the cutouts 2 and 2' of the outer case 1.

Inner case A? , Inside B8, a motor 9 is fixed to an outer frame board 10 and a lower surface of a collar part 11 with screws 12, and a switch board 13 having a switch contact part is fixed to ribs 14,
15.

A round pin portion 16 is formed on the rib 15 and is configured to be engaged with a convex portion at the tip of an elastic leg piece of a switch operation button 17 having a shorting piece to provide clickability.

In addition, the lower part includes a storage battery 18, a transformer 19, a rectifier 20,
A charging circuit in which a resistor 21, a light emitting diode 22, etc. are integrally mounted on a printed circuit board 23 is located in inner case A7 and inner case B.
It is clamped and fixed by 8.

Furthermore, a plug board 25 and a bottom cover 26 equipped with plug contacts 24, 24', etc. are arranged at the lower end.
A plug 28 having a pair of protruding and retractable plug blades 27 is housed in a space formed by the bottom cover 26 and the bottom cover 26 .

Further, a guide plate 29 that defines the sliding of the plug 28 and an operation button 30 that holds the plug 28 in a predetermined position are attached with downward spring bias.

Note that a wall portion 31 having a protruding hole for the plug blade 27 is formed in the plug substrate 25, and the wall portion 31 protrudes to the outside surface.

On the other hand, on the opposite side of the wall portion 31, a ring portion 48 having a shape that surrounds the light emitting diode 22 is integrally formed with the plug substrate 25 and protrudes from the outer surface.

As shown in FIGS. 3 and 4, the stepped portions 32 where the inner cases A7 and B8 are exposed from the outer case 1 are formed in a cross-sectional shape that protrudes by one step, and protrude from the notches 2 and 2' of the outer case 1. Inner case A7. B8 is held, and furthermore, an elastic leg piece 35 having a hook part 34 at the tip is formed on the inner case A7 regarding the divided part of the inner case A7 and B8, and the inner case B
8 is formed with a hole 36 (it may be a recess instead of a hole), and the hook portion 34 is configured to be caught on the end surface of the hole 36.1. Inner case A7 and inner case B8 are prevented from opening.

Also, inner case A for the other divided part? , A rib 37 is formed to surround the wall portion 31 of the plug board 25 from B8, and a notch is formed in the outer case 1 so as to sandwich the side end surface of the rib 37, and the inner case A7 and the inner case B8 are connected to each other. will not open.

Moreover, the bottom cover 26 is connected to the inner case A7. They are fixed by screws 39 to mounting holes provided in the posts 38 formed in the inner case B8.

Further, the plug board 25 is aligned with the wall part 31 and the ring part 48 and fixed to the inner case.

(Battery type) Figures 6 and 7 are longitudinal cross-sectional views showing the structure when the power source is battery type. It shows a charger 47 that has a similar shape to the dry cell battery that it has.

The figure also shows that in this case, it is possible to configure the inner case and the outer case with the same components as those of the above-mentioned power plug-in type.

The positive contact 41 of the partition wall 40 between the power supply section and the motor 9 accommodating section is fixed and connected to the ■ input terminal of the motor 9, while the negative side is connected to the inner case A via a spring 42 and a contact 43.
It is connected to a lead plate 44 fixed to 7 and connected to a switch.

Furthermore, as shown in FIG. 9, the battery cover 45 is
7. It is detachably attached to B8 using a bayonet structure.

In this case, the bayonet claw (bayonet holding part) 49 of the battery cover 45 is bayonet engaged with the bayonet step part (bayonet engaged part) 51 of the inner case A7.

In this case, the bayonet stepped portion 51 of the inner case A7 is arranged planarly offset from the post 38 into which the aforementioned screw 39 is screwed (see comparison between Fig. 8 and Fig. 9), so that both It can be formed without any interference.

Further, the overall length of the electric shaver does not become unnecessarily long as would be the case if the two were shifted in cross section.

Furthermore, the aforementioned case fixing screw posts 38 serve as a wall to prevent the battery from shifting.

As shown in FIG. 9, in the above-described embodiment, a protrusion 46 indicating the operating direction of the battery cover 45 is formed in the inner gap of the rib 37 surrounding the wall 31 of the plug board 25.

Note that this protrusion 46 can also be made to protrude from the outer diameter of the battery cover 45 to have the function of an operation knob.

A cap 3 made of synthetic resin or the like is elastically secured to an outer frame base plate 10 on the upper part of the vessel by utilizing the elastic force of the peripheral wall, and an outer cutter frame 5 fixing the outer cutter 4 is attached to an outer cutter mount 6. The outer cutter holder 6 made of synthetic resin is formed into an integral ring shape, provides elasticity in both outward directions, and holds the outer cutter frame 5 in a detachable manner.

The inner blade is attached via a joint.

In addition, if the upper end surface of the switch operation button 17 comes into contact with the lower end of the cap 3 in a state where the circuit is open, and the switch is turned on inadvertently, it becomes a safety device. Constructed to open circuit.

Further, as shown in FIG. 11, the case opening prevention structure at the upper part of the body is provided on the inner wall of the space of the outer frame board 10 that houses the outer blade mount 6 in the inner case A7. The inner case A7 and the inner case B8 are prevented from opening by the side wall of the protrusion 50 formed on the collar 11 of B8, and the upper surface of the protrusion 50 serves as a sliding guide surface for the outer cutter mount 6. It also has functions.

Furthermore, the entire case is fixed to the lower surface of the outer peripheral edge of the outer frame board 10 and the inner case A7. The outer case 1 forms a sandwich structure with the upper surface of the edge formed at the lower end of B8, and is fixed via the motor 9 and collar portion 11 with screws 12.

Also, the upper edge of the notch 2゜2' of the outer case 1 is the inner case A? , B8, the flange portion 51 protrudes from the inner diameter of the outer case 1, and the inner case A? , the gap between the inner diameter of B8 and the outer case 1 is not visible from the outside.

Inner case A again? The relative position with respect to WB8 is adjusted by the pin 52 and the hole.

In this structure, the basic structure of the case consists of an inner case that is divided into two parts and an outer case that surrounds the inner case, and since the inner case is divided into two parts in the longitudinal direction, the motor, charging device circuit (battery), and plug part are separated. It is extremely easy to assemble into the case after wiring is connected, and especially in the case of a plug-in charging device type, lead wires are used for wiring, and packing etc. are used in the case to hold down heavy parts such as storage batteries and transformers. They are often attached to the inner wall, and the inner case may open due to pressure from these legs. ) and the hole 36
Since the divided inner case is temporarily fixed, it becomes easier to assemble the outer case 1.

In addition, the exposed portion of the inner case is made into a stepped portion 32, which is positioned on the inner surface of the outer case 1 and the notches 2, 2', thereby preventing misalignment, deviation, etc. between the inner case and the outer case.

Furthermore, a rib 37 provided on the inner case is engaged with a notch at the lower end of the outer case 1, allowing complete positioning.

Also, is it built into inner case A? , B8 can be configured so that interior parts can be held on one side thereof, further improving ease of assembling.

〔effect〕

As mentioned above, although the present invention is a completely different type of electric shaver, such as an electric shaver with a charging device and a battery-powered electric shaver with a built-in removable battery, the present invention has not only the cylindrical case of the main body but also the blade part, Since main parts such as motors and switches can be shared, it has the advantage of being easier to manufacture, lowering costs, and facilitating after-sales service.

In addition, since the battery cover in a battery type is mounted using a bayonet type, it does not require the entire circumference of the engagement part with the case like a screw type, but only a small part of it. From this, the bayonet engaged part on the case side that engages with the bayonet engaging part of this battery cover, and the mounting hole for the screw that attaches the bottom cover that supports the charging device to the bottom of the case when the charging device is included. Since it can be formed in a staggered manner, a compact case structure can be achieved, and its practical value is extremely high.

[Application example]

Further, the outer case 1 of the present invention may be made of plastic or metal such as aluminum, and the inner case and outer case can be positioned.

Furthermore, when using a metal case, the machined corner edge portion is the stepped portion 32 or flange portion 51 of the inner case.
You can easily prevent your fingers from getting scratched when you touch the device and grip it.

The present invention can provide the effects described above with an extremely simple structure.

Note that the present invention is not limited to the methods described in the embodiments, and the following methods can also be implemented.

As a structure for preventing the opening of the split part of the inner case divided into two, elastic leg pieces may be hooked on both sides, or ribs may be used, or ribs may be used on both sides, for example. In the case of a plug-in charging type, one side may be provided to cover the protruding wall of the plug blade as in the embodiment, and the other may be similarly shaped to surround a display element such as a light emitting diode (Fig. 12, 4). .

Furthermore, when the battery type is used, the protrusion 46 of the embodiment is not placed on one side, but the same configuration is applied to the opposite side, so that the protrusion 46 can be grasped at two places with fingers, making it possible to attach and detach the battery cover. It has a wide range of applications, is easy to design, and can have a highly functional structure.

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views in two directions perpendicular to the cross-sectional direction of the plug-in charging type of this embodiment, and FIGS. 3 and 4 are cross-sectional views of FIGS. 1 and 2, FIG. 5 is a partial sectional view of the lower part of the vessel. FIGS. 6 and 7 are vertical cross-sectional views in two orthogonal directions in the case of the battery type according to the present embodiment, and FIGS. 8 and 9 are cross-sectional views of FIGS. 6 and 7, and FIG. 11 is a detailed partial cross-sectional view of the periphery of the outer frame substrate, and FIG. 12 is an outline view of the protruding side of the light emitting diode. 1... Outer case, 2, 2'... Notch, 7... Inner case A1 Death... Inner case B
110... Outer frame board, 25... Plug board, 26... Bottom lid, 31... Wall portion, 32... Step portion , 33... side, 34
...Hook part, 35...Elastic leg piece, 36
...hole, 37...rib, 38...
...Boss, 40...Partition wall, 45...
Battery pig.

Claims (1)

[Scope of utility model registration request] When a charging device is attached to the case at the bottom of a cylindrical case with a downward opening, a plug board arranged at the bottom of the case and a space between the plug board and the plug board are arranged at the bottom of the plug board. a mounting hole into which a screw is screwed to fix a bottom cover to the bottom of the case that supports the charging plug in a protruding and retractable manner and holds the plug board at the bottom of the case; A bayonet engaged portion is provided to which a bayonet engaging portion of a battery cover that supports the battery is attached when a battery is removably inserted into the mounting hole, and a bayonet engaged portion is provided between the mounting hole and the bayonet engaged portion. A case structure for an electric shaver characterized in that the and are formed to be offset from each other in a plane.