JP2001239078A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily assemble an electric razor by fixing both electronic parts mounting circuit board and plug circuit board at prescribed positions in an inner housing with a simple structure and inserting the inner housing into an outer housing. SOLUTION: This electric razor has an inner housing 2 with an electronic parts mounting circuit board 5 and a plug circuit board 33 to which a plug rod 32 is fixed, and the inner housing 2 and the plug circuit board 33 are disposed at prescribed positions in an outer housing 1. In the inner housing 2, a bottom partition wall 26, closely abutting to the inner surface of the outer housing 1, is integrally formed of plastics. The electronic parts mounting circuit board 5 is connected to the bottom partition wall 26 above the bottom partition wall 26, and the plug circuit board 33 is connected to the bottom partition wall 26 below and parallel to the bottom partition wall 26. The electronic parts mounting circuit board 5 and the plug circuit board 33 are connected with a metal pin 35 piercing through the bottom partition wall 26. The outer housing 1 has an opening on the bottom, which is closed by a bottom lid 39. A plug rod 32 is exposed out of the outer housing 1 from a through hole 39A on the bottom lid 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shaver having a built-in electronic parts mounting board and a plug rod exposed in a case.

[0002]

2. Description of the Related Art There are two types of electric razors: one in which a power cord is connected, and the other in which the power cord is detachably connected. In the latter shaver, it is necessary to expose a plug rod for connecting a power cord to the outside of the case. In order to fix the plug rod in a fixed position of the case, a conventional electric shaver fixes the plug rod vertically to a plug substrate, and sets the plug substrate in a fixed position by fitting the plug substrate to the case.

[0003]

The plug substrate needs to be connected to a lead wire for electrical connection to a plug rod. In a conventional electric razor, an electronic parts mounting board and a plug board are separately disposed and arranged in a fixed position inside a case, and the electronic parts mounting board and the plug board are connected by lead wires. In this structure, both the electronic parts mounting board and the plug board, which are connected to each other by the lead wire, are arranged at fixed positions of the case, and therefore, there is a disadvantage that the assembly is troublesome. In addition, there is also a disadvantage that an excessive force acts on the lead wire when assembling, and the lead wire is easily cut. Furthermore, the electric shaver of this structure requires the case to be formed into a unique and complicated shape in order to separately mount both the electronic part mounting board and the plug board in a fixed position in the case. There is a disadvantage that the cost increases.

[0004] Further, the electric razor can be conveniently used as a waterproof structure. This is because it can be cleanly washed with water.
In the case of a waterproof electric shaver, it is necessary to close the case in a watertight manner. The case with a waterproof structure can be easily formed into a water-tight structure by forming it into a cylindrical shape. This is because the bottom and the top of the case can be closed in a watertight manner to provide a waterproof structure. In a cylindrical case, it becomes difficult to insert the electronic part mounting board and the plug board connected by the lead wire into fixed positions. In the electric shaver having this structure, the case is separated into a cylindrical outer case and an inner case to be inserted into the outer case, and the electronic part mounting board and the plug board are connected to the inner case to facilitate assembly.

In the electric shaver having this structure, an electronic parts mounting board is mounted at a fixed position of an inner case, and the electronic parts mounting board is connected to a plug board via a lead wire. The electric shaver having this structure is inserted into the outer case in a state where the electronic part mounting board and the plug board are connected by the lead wire, so that the lead wire becomes an obstacle. In addition, if both the electronic part mounting board and the plug board are separately held in the inner case, the shape of the inner case becomes complicated and the manufacturing cost increases.

[0006] The present invention has been developed with a view to solving such a drawback. An important object of the present invention is to provide an electric razor having an extremely simple structure, in which both an electronic part mounting board and a plug board are fixed in place in an inner case, and can be inserted into an outer case and easily assembled. It is in.

Another important object of the present invention is to provide an electric shaver which can firmly fix a plug substrate to an inner case and firmly fix a plug rod at an accurate position via the plug substrate. is there.

[0008]

An electric razor according to the present invention comprises a motor 4 for driving an inner blade 6, a battery 3 for driving the motor 4, and an electronic parts mounting board 5 connected to the battery 3. The electronic part mounting board 5, the motor 4 and the battery 3 are mounted, and the inner case 2 built in a fixed position of the outer case 1 and the plug rod 32 exposed outside the outer case 1 are fixed. And a plug substrate 33 which is provided. Furthermore, the electric shaver of the present invention is characterized by having all the following configurations. (A) The inner case 2 is provided with a bottom partition 26 that is in close contact with the inner surface of the outer case 1 and is integrally formed of plastic. (B) The inner case 2 is located above the bottom partition 26 and connects the electronic parts mounting board 5. (C) The inner case 2 is located below the bottom partition 26 and connects the plug substrate 33 in parallel with the bottom partition 26. (D) The electronic component mounting board 5 and the plug board 33 are connected via a metal pin 35 penetrating the bottom partition 26, and one end of the metal pin 35 is connected to the electronic component mounting board 5.
, And the other end is fixed to the plug substrate 33. (E) The metal pin 35 is inserted into the through hole 26 </ b> B of the bottom partition wall 26 and held at a fixed position of the inner case 2. (F) The outer case 1 has an opening at the bottom, and this opening is closed by the bottom cover 39. (G) The bottom cover 39 is a through hole 39A of the plug rod 32.
The plug rod 32 is inserted into the through hole 39A.
And the plug rod 32 is exposed outside the outer case 1.

In the electric shaver of the present invention, preferably, the outer case 1 is formed into a cylindrical shape with plastic. This electric razor is provided with an O-ring 34 on the outer periphery of the bottom partition 26,
The outer periphery of the bottom bulkhead 26 is connected to the outer case 1 in a watertight manner,
An O-ring 44 is provided on the outer periphery of 9 to connect the outer periphery of the bottom cover 39 to the outer case 1 in a watertight manner. Further, the plug rod 32
O-ring 43 is inserted into bottom cover 39.
To tightly close the through hole 39A of the plug rod 32 in a watertight manner. This electric razor can be conveniently used as a waterproof structure.

Further, the outer peripheries of the bottom partition 26 and the bottom lid 39 are connected to the outer case 1 in a watertight manner, and the through holes 3 of the plug rod 32 are formed.
An electric razor closing the 9A in a water-tight manner is preferably provided with a safety valve 4 that opens on the bottom cover 39 when a predetermined pressure is reached.
6 is provided. This electric razor is composed of a bottom partition 26 and a bottom cover 3.
When the internal pressure in the space sealed by the outer case 9 and the outer case 1 rises above a set pressure, the safety valve 46 opens to allow the gas to be discharged to the outside. Therefore, the gas is prevented from entering the upper part of the bottom partition wall 26, and the gas can be effectively prevented from adversely affecting other parts.

Further, the electric shaver of the present invention comprises an electronic part mounting board 5 mounted on a plastic inner case 2.
Can be integrally formed and provided. This electric razor can easily and reliably connect the electronic parts mounting board 5 to a fixed position of the inner case 2.

Further, in the electric shaver of the present invention, preferably, the ends of the metal pins 35 are fixed to the electronic parts mounting board 5 and the plug board 33 by soldering. In this electric shaver, the metal pins 35 can be fixed to the electronic component mounting board 5 and the plug board 33 very easily.

Further, the electric shaver of the present invention is provided in the inner case 2 by integrally forming a holding cylinder 8 for holding the two batteries 3 side by side in a plane parallel to the electronic parts mounting board 5, The battery 3 can be inserted and held in the holding cylinder 8. This inner case 2 is preferably
A boss 38 for connecting the bottom cover 39 is integrally formed and provided. The boss 38 is provided on a locus connecting the valleys of the two batteries 3.

Further, an electric razor in which the holding cylinder 8 is integrally formed and provided in the inner case 2 and the battery 3 is inserted and held in the holding cylinder 8 is preferably such that the upper end of the holding cylinder 8 is closed and the lower end thereof is closed. Open. Further, a lead plate 41 is connected to the lower end of the battery 3 inserted in the holding tube 8, and this lead plate 41 is connected to the plug rod 32. This electric shaver can be held by the lead plate 41 and the plug rod 32 so that the battery 3 does not fall out of the holding tube 8.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below illustrate an electric shaver for embodying the technical idea of the present invention, and the present invention does not specify the electric shaver as follows.

Further, in this specification, in order to make it easier to understand the claims, the numbers corresponding to the members shown in the embodiments will be referred to as "claims" and "claims". In the column of “means”.
However, the members described in the claims are not limited to the members of the embodiments.

The exploded perspective view of FIG. 1, the exploded rear view of FIG. 2, and the electric razor shown in FIG. 3 comprise a motor 4 for driving the inner blade 6, a battery 3 for driving the motor 4, The electronic parts mounting board 5 connected to the electronic parts mounting board 5, the motor 4, and the battery 3 are mounted.
Inner case 2 built in fixed position of outer case 1
And a plug substrate 33 to which a plug rod 32 exposed outside the outer case 1 is fixed. FIG. 3 shows the inner case 2 pulled out of the outer case 1.

The motor 4 is connected to the inner cutter 6 via a mechanism for converting a rotary motion into a reciprocating motion, and causes the inner cutter 6 to reciprocate. The mechanism for converting the reciprocating motion may be a mechanism currently used or any mechanism to be developed. For example, a camshaft 12 is fixed to a rotating shaft 11 of a motor 4, and the shaking table 1 reciprocates the camshaft 12.
4 and a mechanism for attaching the inner blade 6 to the vibrating table 14 can be used. The inner blade 6 slides inside the outer blade 7 and cuts a beard inserted inside from countless beard holes provided in the outer blade 7.

The battery 3 is a rechargeable battery such as a nickel-hydrogen battery, a nickel-cadmium battery, and a lithium ion secondary battery. One or a plurality of batteries 3 are mounted in fixed positions on the inner case 2. The electric razor of FIG. 2 has two batteries 3 inserted in a holding cylinder 8 of the inner case 2 and built in parallel.

FIG. 4 shows a circuit configuration of the electronic part mounting board 5. The electronic part mounting board having this circuit configuration includes a circuit for controlling charging of the battery 3 and a circuit for controlling rotation of the motor 4. The circuit that controls the charging of the battery 3 includes:
A switching element Q1 connected between the battery 3 and the charging terminal 15, a microcomputer 16 for controlling the switching element Q1 to be turned on and off, and a switching element Q1 connected in series with the battery 3 to limit a charging current. And a charging resistor R that performs the charging. Although the electronic parts mounting board is not shown,
As a circuit for charging a battery, a power supply for converting an input AC commercial voltage to a battery charging voltage may be incorporated.

In the circuit for controlling charging, a large current for charging the battery 3 flows through the switching element Q1 and the charging resistor R. The switching element Q1 generates heat with power proportional to the product of the current and the voltage drop, and the charging resistor R generates heat with power proportional to the product of the square of the current and the resistance. When the current is large, heat generation is large, so that the switching element Q1 and the charging resistor R
The heat-generating component 10 is obtained. In addition, a circuit that incorporates a power supply generates heat when a large current flows through a transformer or a switching element that steps down a commercial voltage to a battery charging voltage, and a rectifying diode, so that these components also become highly heat-generating components. .

In the circuit for controlling the charging of the battery 3 shown in the above-mentioned figure, the microcomputer 16 calculates the remaining capacity from the discharging time of the battery 3. The remaining capacity is indicated by an LED (not shown). Further, the microcomputer 16 calculates the charging time from the remaining capacity and controls the ON time of the switching element Q1. The battery 3 is charged by turning on the switching element Q1 with the electric shaver set in the charger or the power supply connected to the commercial power supply. The microcomputer 16 detects the time when the battery 3 is fully charged, and when the battery 3 is fully charged, the switching element Q1 is turned off to stop charging.

The circuit for controlling the motor 4 includes a switching element Q2 such as an FET, a switching circuit 18 for switching the switching element Q2 on and off, and a push switch 19 for inputting a signal for switching the switching element 18 on and off. Switching circuit 1
8 switches the output between "H" and "L" every time the push switch 19 is pressed and the ON signal is input, and switches the switching element Q2 on and off. This circuit has a feature that the motor 4 can be turned on and off using a push switch having a simple structure. This circuit is
Since the motor current flows through the switching element Q2, the switching element Q2 generates the most heat. Therefore, the switching element Q2 can be disposed as a high heat-generating component in the compartment of the inner case. However, since the switching element Q2 has a smaller current and generates less heat than the switching element Q1 for controlling the charging of the battery 3, the switching element Q2 is not disposed in the compartment as a high heat-generating component, and is provided on the rear side of the electronic parts mounting board. Can also be fixed.

The electronic parts mounting board 5 of FIG. 3 has parts fixed on both sides. The high heat-generating component 10 is located on the front side of the electronic component mounting board 5 and is defined by the compartment 9 of the inner case 2.
It protrudes and is fixed. The high heat generating component 10 is located at a position facing the compartment 9 of the electronic component mounting board 5,
It is fixed by protruding to the front side and inserted into the compartment 9. The electronic part mounting board 5 includes the battery 3 and the motor 4
The electronic component 20 is fixed to the back side of the electronic component mounting board 5 at a position facing the electronic component 20. The electronic part mounting board 5 having this structure is mounted on the inner case 2 so as to approach the battery 3 and the motor 4.

The entire inner case 2 is integrally formed of plastic. The inner case 2 in FIG.
A mounting surface for mounting the electronic parts mounting board 5 is provided on the back surface. On both sides of the mounting surface, holding claws 21 for elastically holding and holding the electronic parts mounting board 5 from both sides are integrally formed so as to protrude. As shown in the cross-sectional view of FIG. 5, the holding claw 21 has a lower end formed in a hook shape, and holds both sides of the electronic parts mounting board 5 with the hook. In the illustrated inner case 2, two holding claws 21 are provided on both sides, respectively, and four holding claws 21 are provided as a whole to hold and hold the electronic parts mounting board 5 at two places on both sides.

Further, the inner case 2 has a compartment 9 between the motor 4 and the battery 3 as shown in FIG. The compartment 9 is provided for disposing a high heat generation component 10 fixed to the electronic component mounting board 5. This compartment 9 is provided with a partition wall 22 at the boundary with the battery 3 side, and is partitioned from the battery 3 by the partition wall 22. Inner case 2 shown
Has a low partition wall 23 between the battery 3 and the motor 4. The partition 23 on the motor 4 side is shown in FIG.
As shown in FIG. 5, a fitting groove 24 for guiding the bearing protrusion 4A of the motor 4 is provided on the motor 4 side. The bearing projection 4A of the motor 4 is inserted into the fitting groove 24 to hold the motor 4 at a fixed position.

The partition 22 provided on the side of the battery 3
Is used in combination with a member that closes the bottom of the holding cylinder 8 into which is inserted. The inner case 2 shown in FIGS. 2, 3, and 6 has a holding cylinder 8 into which the battery 3 is inserted, which is integrally formed of plastic. The holding cylinder 8 has a bottom surface which is a partition 22 of the compartment 9.
To separate the battery 3 from the compartment 9 and prevent the battery 3 from coming off in the direction of the compartment 9. The holding cylinder 8 has an opening at the lower end opposite to the bottom for inserting the battery 3. The illustrated inner case 2 is provided with a holding cylinder 8 having a shape into which two cylindrical batteries can be inserted in parallel.

Further, the inner case 2 shown in the figure has integrally formed side walls 25 for holding both sides of the motor 4. The lower end of the side wall 25 is connected to the holding cylinder 8 of the battery 3. The illustrated inner case 2 is provided with a rectangular compartment 9 surrounded by side walls 25 on both sides, a partition 22 on the battery 3 side, and a partition 23 on the motor 4 side. In this compartment 9, a high heat-generating component 10 fixed to the electronic component mounting board 5 is provided. Therefore, the compartment 9 is opened as a bottom opening 29 by opening the bottom surface on which the electronic parts mounting board 5 is mounted.
The high heat generating component 10 is inserted into the compartment 9 through the bottom opening 29 and arranged.

Further, in FIG. 5, the high heat-generating component 10 arranged in the right-side compartment 9 has a heat-resistant tube 31 around its periphery.
It is covered with. As described above, since the high heat-generating component 10 covered with the heat-resistant tube 31 is effectively prevented from directly touching the inner case 2, there is a feature that the battery 3 can be reliably protected from heat.

Further, as shown in the cross-sectional view of FIG. 5 and the vertical cross-sectional view of FIG. 6, the inner case 2 shown in FIG. 5 and 6, the lower end of the side wall 25 is opened so that air can pass therethrough. The height of the side wall 25 is also lower than the holding cylinder 8 of the battery 3 so that air can flow upward.

The compartment 9, which is open on both upper and lower sides, is provided with a lead wire 3 for connecting the electronic parts mounting board 5 and the motor 4.
It can be used for gaps that pass zero. In the electric shaver shown, one end of a lead wire 30 is connected to the upper surface of the electronic parts mounting board 5 inside the compartment 9 by a method such as soldering.
The lead wire 30 passes vertically through the compartment 9 and has the other end connected to a terminal of the motor 4. This structure allows the lead wires 30 of the motor 4 to be arranged in an ideal state. This is because it is not necessary to pass through the gap between the inner case 2 and the outer case 1.

Further, in the inner case 2 shown in FIGS. 3, 7 and 8, a bottom partition 26 for closing the lower end of the outer case 1 is integrally formed and provided at the lower end, and is located above the bottom partition 26. To connect the electronic parts mounting board 5 to the bottom partition 2
The plug substrate 33 is connected below the lower surface 6 in parallel with the bottom partition wall 26. The bottom partition wall 26 is provided with a circumferential groove 26A for receiving an O-ring 34 on the outer periphery. The O-ring 34 of the circumferential groove 26 </ b> A is in close contact with the inner surface of the outer case 1 in a state where the inner case 2 is inserted into the outer case 1, and is connected to the outer case 1 in a watertight structure.

The bottom partition wall 26 is provided with a through hole 26B through which a metal pin 35 for connecting the electronic component mounting board 5 and the plug board 33, which are arranged vertically apart, is inserted. The inner case 2 shown in FIGS. 7 and 8 is provided with three through holes 26 </ b> B in the bottom partition wall 26. The through-hole 26B is a metal pin 3
5 is formed in a cylindrical shape having an inner diameter substantially equal to the outer diameter. This is for inserting the metal pin 35 into the through hole 26B and holding the metal pin 35 in a fixed position.

The through hole 26B of the bottom partition wall 26 shown in FIG.
Increase the inside diameter on one side, insert the O-ring 36 here,
The metal pin 35 is inserted through the bottom partition 26 in a watertight structure.
The bottom partition wall 26 has a larger through hole on the plug substrate 33 side of the through hole 26B, and the O-ring 36 and the flange 35A of the metal pin 35 are placed therein. The through-hole 26 </ b> B can insert the metal pin 35 from the plug board 33, fix the tip of the metal pin 35 to the electronic component mounting board 5, and fix the metal pin 35 and the electronic component mounting board 5 in a fixed position. Also,
In this state, the through-hole 26B can be closed watertight with the O-ring 36 and the flange 35A.

Further, the bottom partition 26 shown in FIGS.
A support column 37 projecting to the bottom surface side to support the plug substrate 33 in a fixed position and a boss 38 connecting a bottom cover 39 are integrally formed and provided. The support pillar 37 and the boss 38 support the plug substrate 33 at four points. Inner case 2 of this structure
Can support the plug substrate 33 in parallel with the bottom partition wall 26 by the support pillars 37 and the bosses 38. The support pillar 37 supports both lower sides of the plug substrate 33 in FIG.
As shown in FIG. 9, both upper and lower sides of the plug substrate 33 are supported. The support column 37 has an L-shaped fitting recess at the tip.
Here, a plug substrate 33 is fitted. As shown in FIGS. 8 and 9, the boss 38 is provided with a support portion 38 </ b> A for the plug substrate 33 by making the bottom partition wall 26 side thicker.

The set screw 40 of the bottom cover 39 is screwed into the boss 38. Therefore, a screw hole is provided at the tip.
In the inner case 2 of FIG. 7, a boss 38 is provided on a locus connecting the valleys of the two batteries 3. In the inner case 2 in which the boss 38 is provided at this position, the outer shape of the bottom partition wall 26 can be made smaller, and the outer case 1 can be made thinner. This is because the boss 38 can be provided using the valley between the two batteries 3.

Metal pin 35 inserted into through hole 26B
Has one end fixed to the electronic parts mounting substrate 5 and the other end fixed to the plug substrate 33, and the electronic parts mounting substrate 5 and the plug substrate 33 are fixed at fixed positions. The metal pin 35
Electronic parts mounting board 5 and plug board 3 by soldering or the like.
Fixed to 3. In the illustrated inner case 2, the electronic component mounting board 5 and the plug board 33 are connected by three metal pins 35. The two metal pins 35 are connected to the plug board 33
Are connected to the two plug rods 32 fixed to the plug.
Further, one of the two plug rods 32 is connected to an electrode of the battery 3 via a lead plate 41. The remaining one plug rod 32 is also connected to the electrode of the battery 3 via the lead plate 41.

Electronic part mounting board 5 and plug board 33
Is a printed circuit board in which a thin conductive metal is adhered to the surface of an insulating board such as an epoxy board. Further, the electronic component mounting board 5 and the plug board 33, which are printed boards, have a structure in which a wide conductive metal thin film is provided at a portion where the metal pins 35 are bonded, so that the metal pins 35 can be firmly fixed. Further, the plug substrate 33 is provided with a fitting portion 33A for fitting the metal pin 35 in order to more accurately and firmly fix the inner case 2 with the metal pin 35 at a fixed position. The fitting portion 33A is a through hole through which the metal pin 35 is inserted, or a groove into which the metal pin 35 can be fitted. The plug substrate 33 is provided with a thin conductive metal for connecting the two plug rods 32 to the two metal pins 35.

The outer case 1 is formed by molding plastic into a cylindrical shape. As shown in FIGS. 1 and 2, a vibrating rod 13 fixed to a vibrating table 14 is projected from the upper end in a watertight structure. The opening at the bottom is closed by a bottom lid 39 in a watertight manner.
In order to make the upper end of the outer case 1 have a watertight structure, the vibrating rod 13 is connected to the opening window 1 of the outer case 1 via a packing rubber 42.
A. The packing rubber 42 has an outer periphery water-tightly connected to the opening window 1A of the outer case 1, and the vibration rod 13 is inserted through the through hole. The through-hole of the packing rubber 42 elastically adheres to the surface of the vibration rod 13 in a watertight manner due to the elasticity of the rubber.

As shown in FIGS. 8 and 9, the bottom cover 39 has a through hole 39A for the plug rod 32. The plug rod 32 is made to penetrate through the through hole 39 </ b> A in a watertight manner, and the plug rod 32 is exposed outside the outer case 1.
To penetrate the plug rod 32 in a watertight manner, an O-ring 43 is inserted into the plug rod 32, and the O-ring 43 is brought into close contact with the inner surface of the bottom cover 39. Further, the bottom cover 39
The O-ring 44 is also provided on the outer periphery, and the outer periphery of the bottom cover 39 is connected to the outer case 1 in a watertight manner.

The bottom cover 39 is provided with a concave portion 45 at a portion where the plug rod 32 is provided.
Is arranged. The recess 45 has such a depth that the plug rod 32 does not protrude outside. The concave portion 45 is formed into a shape into which a power plug connected to a power cord can be fitted, and the power plug is inserted here. Plug rod 32
Is connected to a power cord via a power plug.

The bottom cover 39 is provided with a safety valve 46 that opens when gas leaks from the battery 3 and the internal pressure of the outer case 1 increases. The safety valve 46 is a thin film adhered to an inner surface of a valve hole 39B provided through the bottom cover 39. The thin film is
Although the valve hole 39B is airtightly closed, the valve hole 39B is damaged when the internal pressure of the outer case 1 increases, and the valve hole 39B is opened. Valve hole 3
9B, as shown in the perspective view of FIG. 10, a vertical groove 45A is provided on the inner surface of the concave portion 45 of the bottom cover 39, and is opened by being connected to the vertical groove 45A. The valve hole 39B opened here can effectively prevent the user from piercing with a needle or the like to damage the thin film.

The electric shaver having the above structure is provided with a bottom partition 26.
Both the bottom cover 39 and the bottom cover 39 are brought into close contact with the inner surface of the outer case 1 via the O-rings 34 and 44 to provide an airtight chamber between the bottom cover 39 and the bottom partition 26. Holding tube 8 into which battery 3 is inserted
Has an upper end closed and a lower end opened, and an opening at the lower end communicates with the airtight chamber. In this structure, the battery 3 is housed in an airtight chamber communicating with the airtight chamber. Therefore,
The gas discharged from the battery 3 raises the internal pressure of the airtight chamber. When the internal pressure of the hermetic chamber becomes higher than the set pressure, the thin film is broken and the gas in the hermetic chamber is discharged to the outside. In the electric shaver having this structure, the gas leaked from the battery 3 does not enter the room housing the electronic part mounting board 5, the motor 4, and the like. Therefore, the gas leaking from the battery 3 does not adversely affect the electronic component mounting board 5 and the like.
In addition, even if the thin film is damaged and water or the like enters the airtight chamber, the water does not enter the room containing the electronic part mounting board 5, the motor 4, and the like.

Further, the inner case 22 is
At the upper end of the horizontal rib 27 that holds the motor 4 in place
Is provided. The motor 4 is fitted in a region surrounded by the lateral ribs 27, the side walls 25 on both sides, and the partition wall 23, and is mounted in a fixed position.

Further, in the inner case 22, the tip of the side wall 25 is formed as a fitting portion 28 for connecting the shaking table 14 of the inner cutter 6 with a fitting structure, and the tip of the elastic arm of the shaking table 14 is fitted therein. And connected.

[0046]

The electric shaver according to the present invention has a very simple structure, in which both the electronic part mounting board and the plug board are fixed in place in the inner case, and these can be inserted into the outer case and easily assembled. There is. That is, the electric shaver of the present invention is provided in the inner case with a bottom partition which is integrally formed on the inner surface of the outer case and is provided integrally with the electronic part mounting board and the plug board through metal pins penetrating the bottom partition. Is connected to the inner case. The electric razor of this structure is a very simple connection structure, and the electronic parts mounting board and the plug board can be securely fixed in the fixed position of the inner case, so the electric plug board is firmly fixed to the inner case and the plug board There is also a feature that the plug rod can be firmly fixed at the correct position via the. In addition, this electric razor can electrically connect the electronic parts mounting board and the plug board by using the metal pins in combination with the conductive member, so that the electronic parts mounting board and the plug board are connected via the lead wire etc. as before. There is also a feature that can be easily assembled without doing.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electric shaver according to an embodiment of the present invention.

FIG. 2 is an exploded rear view of the electric razor shown in FIG. 1;

FIG. 3 is a side view of the inner case of the electric razor shown in FIG. 2;

FIG. 4 is a circuit diagram showing a circuit configuration of an electric shaver according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of the inner case of the electric razor shown in FIG. 2;

FIG. 6 is a longitudinal sectional view of the inner case of the electric razor shown in FIG. 2;

FIG. 7 is an exploded perspective view showing a state in which the inner case is inserted into the outer case.

FIG. 8 is an exploded sectional view of a lower portion of the electric shaver shown in FIG.

FIG. 9 is a sectional view of a lower portion of the electric shaver shown in FIG. 1;

FIG. 10 is an enlarged perspective view of a bottom cover.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer case 1A ... Opening window 2 ... Inner case 3 ... Battery 4 ... Motor 4A ... Bearing convex part 5 ... Electronic parts mounting board 6 ... Inner blade 7 ... Outer blade 8 ... Holding cylinder 9 ... Partition chamber 10 ... High heat generation component DESCRIPTION OF SYMBOLS 11 ... Rotating shaft 12 ... Cam shaft 13 ... Vibrating rod 14 ... Vibrating table 15 ... Charging terminal 16 ... Microcomputer 18 ... Switching circuit 19 ... Push switch 20 ... Electronic component 21 ... Holding claw 22 ... Partition wall 23 ... Partition wall 24 ... Fitting groove 25 ... side wall 26 ... bottom partition 26A ... circumferential groove
26B ... Through-hole 27 ... Lateral rib 28 ... Fitting part 29 ... Bottom opening 30 ... Lead wire 31 ... Heat resistant tube 32 ... Plug rod 33 ... Plug board 33A ... Fitting part 34 ... O-ring 35 ... Metal pin 35A ... Flange 36 O-ring 37 Support column 38 Boss 38A Support section 39 Bottom cover 39A Through hole
39B ... valve hole 40 ... set screw 41 ... lead plate 42 ... packing rubber 43 ... O-ring 44 ... O-ring 45 ... recess 45A ... longitudinal groove 46 ... safety valve Q1 ... switching element Q2 ... switching element R ... charging resistance

Claims (7)

[Claims] A motor (4) for driving an inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3) And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). 2. A motor (4) for driving the inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3). And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). (H) The outer case (1) is formed by molding plastic into a cylindrical shape. (I) An O-ring (34) is provided on the outer periphery of the bottom partition (26), and the outer periphery of the bottom partition (26) is watertightly connected to the outer case (1). (J) Provide an O-ring (44) around the bottom cover (39),
The outer periphery of (39) is connected to the outer case (1) in a watertight manner. (K) Insert the O-ring (43) into the plug rod (32), and closely fit the O-ring (43) to the inner surface of the bottom cover (39) to seal the through hole (39A) of the plug rod (32) with water. Is closed. 3. A motor (4) for driving the inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3). And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). (H) An O-ring (34) is provided on the outer periphery of the bottom partition (26), and the outer periphery of the bottom partition (26) is connected to the outer case (1) in a watertight manner. (I) Provide an O-ring (44) around the bottom cover (39),
The outer periphery of (39) is connected to the outer case (1) in a watertight manner. (J) Insert the O-ring (43) into the plug rod (32), and tightly fit the O-ring (43) to the inner surface of the bottom cover (39) to seal the through hole (39A) of the plug rod (32) with water. Is closed. (K) The bottom cover (39) is provided with a safety valve (46) that opens when a predetermined pressure is reached. 4. A motor (4) for driving the inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3). And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). (H) A plastic inner case (2) is provided with a plurality of holding claws (21) for holding the electronic parts mounting board (5), which are integrally formed. 5. A motor (4) for driving the inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3). And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). (H) The ends of the metal pins (35) are fixed to the electronic parts mounting board (5) and the plug board (33) by soldering. 6. A motor (4) for driving the inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3). And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). (H) The inner case (2) is integrally formed with a holding cylinder (8) for holding the two batteries (3) side by side in a plane parallel to the electronic part mounting board (5), The battery (3) is inserted and held in the holding tube (8). (I) The inner case (2) is integrally provided with a boss (38) for connecting the bottom cover (39), and the boss (38) is a locus connecting the valleys of the two batteries (3). Arranged above. 7. A motor (4) for driving the inner blade (6), a battery (3) for driving the motor (4), and an electronic parts mounting board (5) connected to the battery (3). And an inner case (2) which is attached to the electronic part mounting board (5), the motor (4) and the battery (3), and is built in a fixed position of the outer case (1),
An electric shaver comprising: a plug substrate (33) fixing a plug rod (32) exposed to the outside of an outer case (1); the electric shaver having all of the following configurations. (A) The inner case (2) is provided with a bottom partition (26) which is in close contact with the inner surface of the outer case (1) and is integrally formed of plastic. (B) The inner case (2) is located above the bottom partition (26) and connects the electronic parts mounting board (5). (C) The inner case (2) is located below the bottom partition (26), and connects the plug board (33) in parallel with the bottom partition (26). (D) The electronic component mounting board (5) and the plug board (33)
The metal pin (35) is connected via a metal pin (35) penetrating the bottom bulkhead (26).
The other end is fixed to the plug substrate (33) while being fixed to (5). (E) The metal pin (35) is inserted into the through hole (26B) of the bottom partition (26) and is held at a fixed position of the inner case (2). (F) The outer case (1) has an opening at the bottom, and this opening is closed by the bottom cover (39). (G) The bottom cover (39) is a through hole (39A) for the plug rod (32).
The through hole (39A) has a plug rod (32)
To expose the plug rod (32) to the outside of the outer case (1). (H) The inner case (2) is integrally formed with a holding cylinder (8) for holding the two batteries (3) side by side in a plane parallel to the electronic part mounting board (5), The battery (3) is inserted and held in the holding tube (8). (I) The holding cylinder (8) is closed at the upper end and opened at the lower end. (J) The battery (3) inserted into the holding tube (8) has a lead plate (41) connected to the lower end, and this lead plate (41) is connected to a plug rod (32) to form a lead plate. (41) and plug rod (32)
The battery (3) is held so as not to fall out of the holding tube (8).