JPS596783Y2 - electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver, and more particularly to a structure between a motor base and a main body housing.

An object of the present invention is to provide an electric shaver that is easy to assemble, maintains high positional accuracy between the motor and the mechanism, and is free from rattling.

A detailed explanation will be given below based on the illustrated embodiment.

FIG. 1 is a perspective view of one embodiment, and FIG. 2 is a longitudinal cross-sectional view, in which 13 is an outer blade 15 holding an arcuate spherical outer cutter 15 with many rows of small holes for introducing whiskers. The blade frame is screwed onto the upper surface of a blade mount 23 attached to the upper end of the main body housing 1.

Reference numeral 17 denotes an inner cutter located on the blade mount 23 and in rotating and sliding contact with the inner surface of the outer cutter 15.

The main body housing 1 is composed of a lower housing 12 that houses a battery 81 and a motor 80, and an upper housing 11 that houses mechanical parts such as a trimmer block A.

The upper housing 11 is composed of a small diameter part 11a at the lower part, a circular part 11b at the center, and a cup-shaped part 11C having a larger upper end diameter, and a floor 27 is provided on the bottom surface of the cup-shaped part 11C. ing.

A boss 29 having a cylindrical stand 30 protrudes from the center of the floor 27 around its lower end, and insertion holes 27 a, 2 are provided on both sides.
7a is provided.

The insertion hole 27a opens at the lower surface of the circular portion 11b and is connected to a groove between a pair of fitting ribs 28, 28 provided vertically in two stripes on both outer surfaces of the small diameter portion 11a.

In the figure, 3 is a gate provided at the upper end of the upper housing 11, and this gate 3 has a locking pawl 33 that engages with a tongue-shaped handle 5 rotatably disposed on the circumferential surface of the circular portion 11b. It can be opened and closed by the door 4, which is moved from an operation plate 32 which rotates about a cylindrical stand 30 as the handle 5 rotates, via an operation wheel 38 and a door operation plate 41.

Further, 40 is loosely fitted into the boss 29 together with the door operation plate 41, and as the handle 5 rotates, the trimmer block A disposed in the cup-shaped portion 11C is moved to move the trimmer blade 2 at the front end of the trimmer block A to the gate 3. This is a trimmer operation board that allows you to move the trimmer in and out.

The upper surface of the trimmer block A is in sliding contact with the blade mount 23 attached to the upper opening of the upper housing 11, and the lower surface is in sliding contact with the trimmer block A and each operation plate 30, 40. It is pushed upward by a trimmer presser plate 48 arranged so as to partition between the trimmer 41 and the trimmer press plate 48 .

A motor base 91 disposed within the lower housing 12 has elastic protrusions 94, 94 vertically disposed on both sides thereof, and motor base locking claws 95, 95 directed outward at the upper ends of the elastic protrusions 94.
is installed protrudingly.

This motor base locking pawl 95 is locked and fixed in a motor base locking recess 96 provided at the upper part of the inner surface of the lower housing 12.

A motor arranging cylinder 97 into which the lower part of the motor 80 fits is provided in the center of the upper surface of the motor base 91, and a through hole for an anode terminal is drilled in one side of the bottom surface of the motor base 91 so that the motor 80 can be mounted on the bottom surface. The anode metal fitting 79 fixed to the terminal by crimping and locking is exposed downward from the anode through hole, and the battery 81
contact with the anode.

7B is a cathode metal fitting whose horizontal piece 78a is attached to the lower surface of the motor base 91, and whose vertical piece 78b passes between the elastic projection piece 94 and the outer surface of the motor placement cylinder 97 and projects upward. It is something that

The upper end of the vertical piece 78b is bent into a dogleg shape and is connected to the lower end of a contact fitting 77, which will be described later.

The upper housing 11 and lower housing 12 are assembled as follows.

That is, each part is assembled into the cup-shaped part 11C of the upper housing 11, and the trimmer holding plate 48, the trimmer block A, and the door 4 are also arranged, and the handle 5 is attached to the circular part 11b.

Then, the blade mount 23 is placed over the upper end of the upper housing 11.

On the other hand, inside the lower housing 12 is a motor 80 as described above.
The motor base 91 with the attached motor is attached.

At this point, as shown in FIG.
There is a slight gap between the outer surface of the elastic protrusion 94 and the inner surface of the lower housing 12.

If the small diameter portion 11a is inserted into the lower housing 12, the small diameter portion 11a will be placed on the upper surface of the motor placement cylinder 97 of the motor base 91.
3. The lower ends abut against each other for vertical positioning, and two vertical ribs 99 are provided on the inner surface of the elastic protrusions 94, 94.
, 99 are fitted with the fitting ribs 2B, 2B.

Then, insert the mounting screw 26 from the upper surface of the blade mounting base 23 through the trimmer holding plate 48, the insertion hole 27a of the upper housing 11, and between the fitting ribs 2B, 28, and the outer surface of the motor mounting cylinder 97 of the motor base 91 and the elastic protrusion 94. It screws into a screw hole installed between the two.

At this time, the elastic protrusion 94 is attached to the mounting screw 26 as shown in FIG.
The upper end of the motor 80 fits into the recess 27b on the lower surface of the floor 27, and the motor base 91 is pulled upward. 29 and the output shaft 76 of the motor 80.
The center of the image is determined and positioned.

A drive shaft 75 connected to the output shaft 76 protrudes into the upper housing 11 through the boss 29, and the eccentric cam 10 and connection shaft 9 attached to the drive shaft 75 drive the trimmer blade 2 and the inner cutter block 16, respectively. .

Reference numeral 36 in FIG. 4 denotes a movable contact spring attached to the lower surface of the operation plate 32, which is attached to the floor 27 and hangs down so that its legs are on the outer surface of the small diameter portion 11a.
The contact metal fitting 77 in contact with the contact plate 73 which is also attached to the floor 27 and has two contact portions is electrically connected to one of the contact portions of the contact plate 73.

The contact plate 73 is attached from below the floor 27 and is in contact with a metal case that covers the side and top surfaces of the motor 80.

Since the metal case and the cathode side terminal of the motor 80 are connected by the metal fitting 72, the contact plate 73 and the contact metal fitting 78
The switch for the motor 80 is composed of the movable contact spring 36 and the movable contact spring 36.

A battery cover block 14 is detachably fitted to the lower end of the lower housing 12 with the battery 81 housed therein.

As mentioned above, in this invention, the upper housing containing the various mechanical parts consisting of the trimmer block and the mechanism for taking it in and out is fixed by tightening the mounting screws, and the motor base is also engaged. The lower housing is also connected to the upper housing, and the main body housing and motor base are fixed simply by tightening the mounting screws, making it easy to assemble. Since the motor base on which the motor is attached is directly connected to the upper housing that houses the mechanical parts consisting of the Furthermore, since the mounting screw inserted through the upper housing is screwed into the motor base installed in the lower housing, it is easy to insert and remove the trimmer block into and out of the upper housing. It is possible to store and assemble the mechanical parts from the bottom to the top, and after this work, the mounting screws can be finally inserted from above for installation. An elastic protrusion is provided to protrude upward,
The tip of the elastic protrusion is attached to the inner surface of the lower housing, and the mounting screw inserted through the upper housing is screwed onto the motor base, so when the mounting screw is tightened, the motor base is pulled up and the tip of the elastic protrusion is pulled downward. This device presses the housing to secure it more firmly and prevent the motor base from coming off.Furthermore, the mounting screws inserted through the upper housing are screwed into the motor base, and the recess provided in the lower floor of the upper housing is used to secure the motor base. The upper end of the motor is fitted to the upper end of the motor, so the motor base is pulled up by tightening the mounting screw, and the upper end of the motor is placed in the recess made on the underside of the floor, and the output shaft of the motor is positioned at the specified position. is located in a precise predetermined position relative to the trimmer block.

[Brief explanation of drawings]

Figures 1a and t) are external perspective views of one embodiment of the present invention, Figure 2 is a vertical sectional view of the same, and Figure 3 is a view of the outer cutter frame, inner cutter block, and blade mount housed below the trimmer block. FIG. 4 is an exploded perspective view of each part attached to the upper housing; FIG. 5 is an exploded perspective view of the lower housing, motor base, and battery cover block; FIG. 6 is a partial sectional view of the same as above; FIG. 7 is a partial sectional view before tightening the mounting screw. 1 is a main body housing, 11 is an upper housing, 12 is a lower housing, 26 is an attachment, 80 is a motor, and 91 is a motor base.

Claims (1)

[Scope of utility model registration request] The main body housing consists of an upper housing in which the various mechanical parts consisting of a trimmer block and a mechanism for taking it in and out are housed, and a lower housing in which the motor is housed, and the motor base in which the motor is installed in the lower housing. is installed inside the motor base, an elastic protrusion is provided upwardly from the outer periphery of the motor base, and the tip of the elastic protrusion is engaged with the inner surface of the lower housing.
The upper housing is attached to the lower housing by screwing the mounting screws inserted through the upper housing into the motor base, and the upper end of the motor is fitted into the recess provided on the lower surface of the floor of the upper housing. electric razor.