JPS6351037B2 - - Google Patents

Description

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

[Background technology]

Conventionally, a printed circuit board constituting a charging circuit is provided below the motor and battery arranged inside the housing, and the switch is turned on and off using contacts formed on the patterned surface of this printed circuit board and a contact spring in the switch section. There were electric razors that could do this (for example, Utility Model No. 57-27417, Utility Model No. 59-
No. 85543).

However, when a printed circuit board is assembled into a housing, it is installed by storing it in one of the approximately semi-cylindrical halves of the housing, but at that time, the electronic component side of the printed circuit board is placed on the top surface at the time of assembly, and the pattern side is facing down. Because of this, the relative relationship between the contact spring of the switch part and the contact part was not visible. As a result, it is difficult to make adjustments due to misalignment of the contact springs during assembly, resulting in poor assembly performance.Furthermore, if the switch spring comes off, the spring gets caught, resulting in poor operability. In addition, because the mounting hole that slidably supports the switch handle faces the surface of the printed circuit board that has the fixed contacts, it is easy for dirt, etc. to enter between the fixed and movable contacts through the mounting hole, causing poor contact. There was a drawback.

[Purpose of the invention]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electric shaver that is easy to switch, easy to assemble, and prevents poor contact.

[Disclosure of the invention]

The present invention includes a housing formed into a cylinder by combining a pair of substantially semi-cylindrical halves, a blade provided at one end of the housing, and a central portion of one of the substantially semi-cylindrical halves. a blade drive motor supported by a motor base installed; a battery disposed adjacent to the motor in the housing; a circuit board on which an electronic component facing toward the installed substantially semi-cylindrical half body is mounted and a fixed contact provided on the opposite side of the electronic component; and a circuit board slidably provided in the housing and slidably contacted with the fixed contact. A switch lever having a movable contact and an engaging portion formed on the side of the substantially semi-cylindrical half body having the motor base; and a mounting portion formed on a portion of the substantially semi-cylindrical half body corresponding to the motor base. The switch handle has a hook that is slidably engaged with the slit, and a switch handle that is engaged with the engagement section.

According to the configuration of the present invention, since both the fixed contact and the movable contact of the switch lever are visible during assembly, the relative relationship between the two can be easily adjusted, and the assemblability and operability are improved. Furthermore, since the motor and battery are arranged adjacent to each other, the width of the housing is increased and the width of the switch handle can be increased, making it easier to operate the switch. Furthermore, since a mounting slit for the switch handle is formed in the part corresponding to the approximately semi-cylindrical half motor base, the space between the mounting slit and the circuit board is shielded by the motor base. Since it becomes difficult for dirt and the like to enter between the movable contact and the fixed contact through the slit, occurrence of poor contact can be prevented. Furthermore, since the motor is supported by the motor base, the motor can be securely fixed.

An embodiment of the invention is shown in FIGS. 1 to 6. That is, the housing 1 is formed into a cylindrical shape by combining a pair of substantially semi-cylindrical halves 1a and 1b, which are connected by fitting connecting members 1c on both sides. Approximately semi-cylindrical half 1a of housing 1
A switch handle 2 having a hook 2b that is slidably engaged with a mounting slit 34 formed in the switch handle 2 is provided so as to cover substantially the entire surface of the substantially semi-cylindrical half body 1a. A sharpening blade 3 that can be moved and protruded is provided. Further, a blade portion is provided at the upper portion, which is one end portion of the housing 1.
This blade part has an outer cutter frame 5 that holds an outer cutter 4, and a frame locking part 6 formed on the upper surface of the housing 1 and a spring-supported attachment/detachment part provided on the opposite side of the frame locking part 6. It is removably locked by a button 7. A motor 8 for driving the blade is arranged approximately in the center inside the housing 1, a battery 9 is arranged adjacent to the space on one side of the motor 8, and a switch handle 2 and a hook are arranged in the space on the opposite side of the motor 8. A circuit board is provided with a switch lever 10 fitted with a locking part 2a as an example and an engaging part 10a as an example of a notch, and further has circuit components mounted on the lower part, which is the other end of the housing 1. A printed circuit board 17 is provided. The switch lever 10 includes an operator 11 of the razor blade 3, a click piece 12 of the switch 2, and a switch contact spring 1 that serves as a movable contact.
3 and a guide rib 10 for sliding in the direction of one end of the housing 1.
b, 10c, etc. The motor 8 is held by a pair of ribs 1 that support both sides of the bearing 15 of the motor 8, are located between the motor terminals 16, and hold the printed circuit board 17 at a step 18.
9 and a motor base 31 with ribs 20 that abut against the side walls of the motor 8 and the battery 9;
b etc. is fitted and held. Also, printed circuit board 1
7 has an extending portion 22 extending into the space on the switch lever 10 side, and a contact portion 21 serving as a fixed contact is formed on the pattern surface 17a side, and comes into contact with the switch contact spring 13 provided on the switch lever 10. switch on and off. This printed circuit board 17 has a charging plug 17c and is assembled so that the side 17b having the electronic component 30 faces the switch handle 2, and the step 18 of the rib 19 formed on the motor base 31 and the Multiple retaining ribs 3 provided inside
2 is maintained. A driver 23 is provided above the motor 8 and battery 9 inside the housing 1, and converts the rotational motion of the motor 8 into reciprocating motion.
The drive element 23 is connected to the inner cutter 24 and engaged with the fitting piece 26 of the edge cutting blade driver 25 of the edge cutting blade 3 when the edge cutting blade 3 protrudes. Blade 3 can be driven. Kiwazori blade 3
The projection is performed via the lever 27 by the operator 11 pushing up the projection lever 27 against the spring 27a when the switch lever 10 is turned on.

In the above, the motor 8, battery 9, printed circuit board 17, and switch lever 10 are assembled in the following steps. That is, housing 1
The motor base 31 is housed in the center of one substantially semi-cylindrical half body 1a, and the motor 8 is installed on this.
A battery 9 is housed in a space on one side, a printed circuit board 17 is housed in the lower end of the substantially semi-cylindrical half 1a, and a switch lever 10 is housed in the other side of the motor 8. At this time, since the surface that becomes the upper surface side when the printed circuit board 17 is assembled is the pattern surface 17a, the relationship between the contact portion 21 and the switch spring 13 is always clear during assembly, and adjustment of misalignment etc. is facilitated. Next, another approximately semi-cylindrical half body 1b is placed over the connecting member 1c.
Fix the whole thing.

In this way, the contact part 21 is provided on the top surface side when the printed circuit board 17 is installed, and the contact spring 13 of the switch lever 10 is brought into contact with this.
The contact portion 21 and the switch spring 13 can be seen during assembly, and adjustment is easy, which improves assembly efficiency, and eliminates the occurrence of obstacles, improving operability. Furthermore, by arranging the battery 9, motor 8, and switch lever 10 substantially in a row in the width direction of the housing 1, the width of the housing 1 is increased, and the width of the switch handle 2 can be increased, thereby improving the operability of the switch.

Also, a rib 19 that supports both sides of the bearing 15 of the motor 8 and is located between the motor terminals 16 and holds the printed circuit board 17 at a step 18, and a rib 20 that abuts the side walls of the motor 8 and the battery 9. By providing the motor base 31 with a motor base 31, the motor 8 can be securely fixed, and the insulation distance between the mounting slit 34, in which the switch handle 2 hook 2b is locked by the rib 20, and the motor 8 and the battery 9 can be reduced. can be ensured. In other words, in the conventional structure, support ribs were provided on the housing to hold the printed circuit board, but the support ribs on the housing were insufficient to secure the motor.
It was necessary to add a cushion or the like to hold the presser foot. In addition, the housing mounting slit 34
To ensure the insulation distance between the motor and battery,
The motor and battery were covered with insulating paper, making it difficult to assemble. Furthermore, compared to the conventional case, the contact portion 21 of the printed circuit board 17 and the switch spring 13 are not located on the back side of the mounting slit 34 and are shielded by the motor base 31, so the contact portion 21 and the switch spring 13 are passed through the mounting slit 34.
Since it is difficult for dust etc. to enter between the two, it is possible to prevent the occurrence of poor contact.

〔Effect of the invention〕

As described above, according to the electric shaver of the present invention, since both the fixed contact and the movable contact of the switch lever are visible during assembly, the relative relationship between the two can be easily adjusted, which improves ease of assembly and operability. Ru. Furthermore, since the motor 8 and the battery are arranged adjacent to each other, the width of the housing is increased and the width of the switch handle can be increased, making it easier to operate the switch. Furthermore, since a mounting slit for the switch handle is formed in the part corresponding to the approximately semi-cylindrical half motor base, the space between the mounting slit and the circuit board is shielded by the motor base. Since it becomes difficult for dirt and the like to enter between the movable contact and the fixed contact through the slit, occurrence of poor contact can be prevented. Furthermore, since the motor is supported by the motor base, there is an effect that the motor is securely fixed.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention with half 1b of the housing removed, FIG. 2 is a vertical sectional view, FIG. 3 is a sectional view taken along the line -
1, FIG. 5 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 6 is an exploded perspective view of essential parts of internal parts. DESCRIPTION OF SYMBOLS 1... Housing, 1a, 1b... Approximately semi-cylindrical half body, 2... Switch handle, 2a... Engaging portion,
2b...Hook, 4...Outer blade of the blade section, 8...Motor, 9...Battery, 10...Switch lever, 13
. . . Switch spring as a movable contact, 17 . . . Printed circuit board as a circuit board, 21 . . . Contact portion as a fixed contact, 30 .

Claims (1)

[Claims] 1 A housing formed into a cylindrical shape by combining a pair of substantially semi-cylindrical halves, a blade provided at one end of the housing, and a blade provided in the center of one of the substantially semi-cylindrical halves. A blade drive motor supported by a motor base; a battery disposed adjacent to the motor in the housing; and a battery disposed at the other end of the housing to which the motor base was installed when assembled. a circuit board on which electronic components are mounted facing the substantially semi-cylindrical half body and fixed contacts are provided on the opposite side of the electronic components; and a movable contact that is slidably provided in the housing and makes sliding contact with the fixed contacts. a switch lever having an engaging portion formed on the substantially semi-cylindrical half side having the motor base;
A switch handle having a hook that slidably engages with a mounting slit formed in a portion of the substantially semi-cylindrical half corresponding to the motor base, and a locking portion that engages with the engaging portion. An electric razor with