JPS598012B2 - electric razor switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a switch device for an electric shaver.

1976- as an electric shaver using conventional storage batteries
10346 is known, but in this conventional example, the motor switch and battery switch are separate, so if the motor switch is accidentally turned on during charging, the motor will rotate during charging. This had the problem of deteriorating charging efficiency.

The present invention was invented in view of the above points, and the first object of the present invention is to turn the motor and rechargeable battery on and off by moving the switch handle and turning the motor on and off. It is desirable to be able to switch between the charging circuit and the charging circuit of the first invention, and to prevent the possibility that the motor rotates erroneously during charging and deteriorates the charging efficiency. In addition to the purpose, by attaching an elongated rib that comes into elastic contact with the inner surface of the housing to the switch handle, and protruding a dowel that bends the elongated rib within the sliding range of the elongated rib on the inner surface of the housing, the elasticity of the elongated rib can be improved. The purpose of the present invention is to enable the switch handle to be attached to the housing by force, and to provide clickability by allowing the elongated rib to overcome the dowel, thereby enabling confirmation of on/off status with a simple configuration. In addition to the above object of the first invention, by providing the switch handle with an elongated rib that comes into elastic contact with the inner surface of the housing,
The elastic force of the elongated rib allows the switch handle to be attached to the housing, and locking recesses are provided on the outer surface of the switch handle at two locations above and below, and the switch handle is fixed by alternately fitting into the locking recesses. The convex part
・By protruding from the inner surface of the housing, the switch handle can be locked in the on and off positions by locking the locking concave part and the convex part, respectively, and the on and off states can be reliably maintained, and the switch handle can be held in the on and off positions. To provide a switch device for an electric shaver that prevents malfunctions because the switch cannot be operated by sliding in the axial direction of the housing unless the switch is pressed.

The present invention will be described in detail below according to illustrated embodiments.

Insert the terminal hole 21 of the terminal fitting 7 into one terminal of the motor 6, fix it with solder, etc., press fit the joint 5 onto the shaft of the motor 6 to form the motor block A, and This motor block A is fixed with the motor mounting screw 3, and then the inner cutter block 2 is attached so as to fit into the joint 5 fixed as described above, and the outer cutter block 1 is screwed onto the blade mount 4. The fitted block is called the blade mount block B.

The housing 27 has a cylindrical shape with a bottom and is divided into a right housing half 15 and a left half 16, and a switch handle window 29' is bored in the center of the right housing half 15.

The switch handle 9 has arcuate and elastic elongated click ribs 22 extending from both sides.

A lower spring portion 24 of the contact spring 8 extends diagonally downward from one end of the horizontal piece 23, and the other end of the horizontal piece 23 is shaped like a U-shape A.
It is bent to form a U-shaped locking part 25, and the center part is bent upward to form a contact convex part 26.

This contact spring 8 has an elongated rib 22 connected to a U-shaped locking portion 25 and a bent portion 30 formed by a horizontal piece portion 23 and a lower spring portion 24.
It is installed so that it is sandwiched between.

Here, the hinge spring part 24 is a part that is connected to the other pole of the constantly rechargeable battery, and the contact convex part 26 comes into contact with one pole of the motor 6 only when the switch handle 9 is moved to the motor ON side. The bending part 30
This is a portion that comes into contact with a contact fitting 10 that is connected to a fixed contact 33 only when the switch handle 9 is moved to the motor-off side.

The operation part 31 of the switch handle 9 is located in the right half of the housing 1.
The switch handle 9 is inserted into the right half 15 of the housing so that it protrudes from the switch handle window 29 of No. 5.

At this time, the elongated rib 22 of the switch handle 9 into which the contact spring 8 is fitted has its own elasticity 9 and presses the inner surface of the right half 15 of the housing appropriately.

Further, this elastic contact force is reinforced by a contact spring 8 attached to the elongated rib 22.

A resilient contact 32 and a fixed contact 33 are arranged on the upper surface of the terminal board 13. The resilient contact 32 and the fixed contact 33 are fixed to the terminal board 13 with a plug pin 14, and this plug pin 14 is connected to the terminal. It protrudes downward from the lower surface of the plate 13.

In this way, the plug base C is formed.

The plug base C is inserted into a U-shaped rib 34 provided below the right half 15 of the housing.

A guide ring 11 to prevent the switch handle 9 from falling etc. is fixed to the rechargeable battery 12 by press-fitting or the like.
A rechargeable battery 12 to which this guide ring 11 is fixed is inserted between the lower spring portion 24 of the contact spring 8 added as described above and the elastic contact 31 provided on the plug base C.

The contact fitting 10 for making the rechargeable battery 12 chargeable when the switch is off and not charging when the switch is on is inserted into the groove 35 of the right half 15 of the housing.

This contact metal fitting has a 10Ω-shape with the soldering terminal 3γ protruding from the leg portion 36, and the groove portion 35 is recessed in an L-shape so that the leg portion 36 can fit therein.

When the left half 16 of the housing is fixed to the right housing block formed in this manner with screws, etc.,
The tip of the elongated rib 22 of the switch handle 9 is located on the left half of the housing. 16 and is attached so as to press the operating section 31 of the switch handle 9 outward.

At this time, the convex portion 40 protruding from the inner surface of the right housing half 15 fits into the upper locking recess 39 of the four locking recesses 39 provided in the switch handle 9 at four locations on the upper, lower, left, and right sides. A lock structure is formed in which the switch handle 9 is pushed inward and then moved up and down.

With this arrangement, switching of the switch handle 9 can be performed reliably.

In this case, the pushing force applied to the switch handle 9 is for elastically deforming the elongated rib 22 of the switch handle 9.

In addition, the plug base C and the contact fitting 10 are also respectively...
U-shaped rib 34 and groove 3 provided on the left half portion 16 of the Uzing
5 and is completely fixed.

Furthermore, in order to prevent the rechargeable battery 12 from changing its position when the switch is turned on, the housing block thus formed is held down from above by a holding rib 41 protruding from the inner surface of the left half part 16 of the housing. Right half 15
The upper wall 42 of the left half part 16 fits into the bottom outer periphery recess 43 of the blade mounting base 4, and the L-shaped rib 43 protruding below the blade mounting base 4 is connected to the upper wall 42 of the right half part 15 of the ujing and left half 1
The blade mount block is fixed by fitting into the upper recess 44 of No. 6.

Further, to form the internal circuit, a resilient contact 32 for battery contact (negative electrode in this example) electrically connected to one side of the plug pin 14 is always in contact with the negative electrode of the rechargeable battery 12, and a fixed contact 33 (in this example, the positive electrode) and the contact fitting 10 are connected to the lead wire 4
Connected by 5.

When the motor 6 for driving the inner cutter block 2 is turned off, the switch handle 9 is moved to the right half of the housing 1 by the elastic force of the elongated rib 22, as shown in FIG.
A convex portion 4 provided on the right housing half 15 within the locking recess 39 above the switch handle 9 and pressed against the inner surface of the housing 5
0 and has a locking mechanism to prevent the switch from being turned on accidentally.

Further, the contact spring 8 attached to the elongated rib 22 of the switch handle 9 is electrically connected to one terminal (the positive electrode 28 in the figure) of the rechargeable battery 12 and the charging contact fitting 10, respectively.

(At this time, the connection between the rechargeable battery 12 and the contact spring 8 is made by pressing with the elasticity of the lower spring part 24 provided below the contact spring 8, and the connection between the contact fitting 1o and the contact spring 8 is It is pressed by the outward spring force of the elongated rib 22 of the switch handle 9 and the springiness of the contact spring 8 itself.

) However, as shown in FIG. 4, the contact spring 8, which is always in contact with one terminal of the rechargeable battery 12, is not connected to the terminal fitting 7 attached to one terminal of the motor 6, so the motor 12 is not driven. On the other hand, when turning on the motor 12, push the operation part 31 of the switch handle 9 inward as shown in FIG. What is necessary is to release the fitting with the convex part 40 of 15 and slide it upward.

At this time, as shown in FIG. 7, when the elongated rib 22 of the switch handle 9 passes over at least one (two in the figure) click dowels 46 provided in the right half 15 of the housing, the elongated rib 22 Since it is forcibly deformed elastically inward, it produces appropriate operability and clickability.

In this way, in the present invention, the switch handle 9 can be assembled using only the elongated rib 22 and the dowel 46 provided on the inner surface of the right housing half 15.
It is possible to give a click characteristic to the device, and does not require any special parts for imparting the click characteristic.

When the switch handle 9 is lowered and the motor 6 is turned on, the protrusion 40 of the housing right half 15 fits into the locking recess 39 on the r side of the switch handle 9, preventing contact failure and holding the switch. It's exerting power.

At this time, as shown in FIG. 5, the contact spring 8 attached to the elongated rib 22 of the switch handle 9
6 is electrically connected to a terminal fitting 7 attached to the other terminal of the motor 6, and a rechargeable battery 12
The current flowing out from the positive electrode passes through eight contact springs, then through the motor 6, and then passes through one terminal of the motor 6, through the lead wire 45 connected to the elastic contact 32, and then to the rechargeable battery 12.
The current is refluxed to the negative electrode of the

Also, at this time, the electrical connection between the contact panel 8 and the contact fitting 10 is disconnected 9, and the input from one of the plug pins 14 is not transmitted to the battery, so that the battery is not charged when the motor 6 is driven. Even if the adapter 17 is connected to the plug pin 14, the charging battery 12 is not charged.

In the present invention, a contact spring is attached to the switch handle as described above, and there is a part connected to the other pole of the constantly rechargeable battery on the contact spring, and only when the switch handle is moved to the motor on side. There is a part that comes into contact with one pole of the motor, and another part that comes into contact with the connection fitting that connects to the fixed contact only when the switch handle is moved to the motor off side, so you can turn the motor on by moving the switch handle. By turning off the motor, the charging circuit for the rechargeable battery can be switched between the motor and the charging circuit of the rechargeable battery, and there is no risk that the motor will rotate incorrectly during charging, reducing charging efficiency.Furthermore, the switch can be turned on electrically. , switch the contact to be turned off and the battery terminal to be connected to the pole of the rechargeable battery.
- The contact spring provided on the handle can be used for both purposes, reducing the number of parts, simplifying the structure, and making assembly easier.

In the second invention, in addition to the effects of the first invention, the elongated rib that comes into elastic contact with the inner surface of the housing is switched.
By attaching it to the housing, by protruding a dowel that bends the elongated rib in the sliding range of the elongated rib on the inner surface of the housing, the elastic force of the elongated lip allows the switch handle to be attached to the housing, and the elongated rib By overcoming the gap, it is possible to provide clickability, and with a simple configuration, it is possible to confirm whether the switch is on or off.

Moreover, in the third invention, in addition to the effects of the first invention,
・Since the switch handle is equipped with a long and narrow rib that comes into elastic contact with the inner surface of the housing, the switch handle can be attached to the housing using the elastic force of the long and thin rib.
Locking recesses are provided on the outer surface of the switch handle at two locations, upper and lower, and the switch handle is fitted alternately into the locking recesses.
・By protruding the protrusion on the inner surface of the housing to fix the switch handle, the switch handle can be locked in the on and off positions by engaging the locking recess and the protrusion, respectively. It can be held securely, and unless the switch handle is pressed, the switch cannot be operated by sliding in the axial direction of the housing, thereby preventing malfunctions.

[Brief explanation of drawings]

1 and 2 are exploded perspective views of one embodiment of the present invention, FIG. 3 is a vertical cross-sectional view of the same above when the motor is off, and FIG. 4 is a lower half of the same as shown in FIG. 3. 5 is a vertical sectional view of the same as above when the motor is turned on, FIG. FIG. 8 is a partial cross-sectional view showing the switch handle in a locked state, and FIG. 9 is a block circuit diagram of the present invention. 2...Inner blade block, 6...Motor, 8...Contact spring, 9...Switch handle, 10...Contact fitting, 12...Rechargeable battery, 13...Terminal Board, 14・
...Plug pin, 22...Elongated rib, 27...One.
Uzing, 29...Switch...Window for handle, 32...
...Resilient contact, 33... Fixed contact, 39... Locking recess, 40... Convex portion, 42... Lead wire, 46...
Dowel.

Claims (1)

[Claims] 1. A switch for switching between the motor that drives the inner blade block for shaving and the charging circuit of the rechargeable battery.
・Provided in a slidable manner in the housing, 1. A terminal plate provided in the housing is provided with an elastic contact and a fixed contact that come into elastic contact with one pole of the rechargeable battery, and the terminal board is provided with a terminal plate that faces outward from the elastic contact and the fixed contact. A plug pin for external power connection is provided protruding from the switch handle, and a contact spring is attached to the switch handle, and a part connected to the other pole of the constantly rechargeable battery is attached to the contact spring, and when the switch handle is moved to the motor on side. A part that contacts one pole of the motor and a part that contacts the fixed contact only when the switch handle is moved to the motor off side are provided, and the other pole of the motor and the elastic contact are electrically connected. A switch device for an electric shaver, characterized in that it is connected to 2. A switch and handle for switching between the motor that drives the inner blade block for shaving and the charging circuit for the rechargeable battery is provided in the housing in a slidable manner, and the elongated rib that comes into elastic contact with the inner surface of the housing and the rechargeable battery for driving the motor are provided. A contact spring that makes elastic contact with the housing is attached to the switch handle, a dowel that bends the long rib protrudes within the sliding range of the long rib on the inner surface of the housing, and a terminal plate provided inside the housing is attached to a rechargeable terminal plate. A resilient contact and a fixed contact are provided that come into elastic contact with one pole of the battery, and a plug pin for connecting an external power source is provided protruding outward from the resilient contact and the fixed contact, a contact spring is attached to the switch handle, and a contact spring is attached to the switch handle. The contact spring has a part that is connected to the other pole of the rechargeable battery, a part that contacts one pole of the motor only when the switch handle is moved to the motor on side, and a part that contacts one pole of the motor only when the switch handle is moved to the motor off side. 1. A switch device for an electric shaver, characterized in that a contact fitting is connected to a fixed contact and a contact portion is provided, and the other pole of the motor and the elastic contact are electrically connected. 3. A switch that switches between the motor that drives the inner blade block for shaving and the charging circuit for the rechargeable battery.The handle protrudes into the window for the switch handle drilled in the housing, and slides in the axial direction of the housing. Place it freely,・
・An elongated rib that comes into elastic contact with the inner surface of the housing and slides in the axial direction of the housing extends 9 times beyond the switch handle, and locking recesses are provided on the outer surface of the switch handle at two locations above and below. Projections are provided on the inner surface of the housing that alternately fit into the locking recesses to secure the switch handle, and elastic contacts are provided that make elastic contact with one pole of the rechargeable battery on the terminal plate provided inside the housing. and a fixed contact, a plug pin for connecting an external power supply is provided protruding outward from the elastic contact and the fixed contact, a contact spring is attached to the switch handle, and the other side of the normally rechargeable battery is attached to the contact spring. The part that connects to the pole of the switch handle, the part that contacts one pole of the motor only when the switch handle moves to the motor on side, and the part that contacts the fixed contact that connects to the fixed contact only when the switch handle moves to the motor off side. What is claimed is: 1. A switch device for an electric shaver, characterized in that a switch device for an electric shaver is provided, and the other pole of the motor is electrically connected to a resilient contact point.