KR200199335Y1 - Cutting blade assembly for electric razor - Google Patents

Abstract

The present invention relates to a rotary drum type electric shaver, and more particularly, to a cutting blade assembly for an electric shaver improved in order to assemble a drum type cutting blade assembly that rotates within the safety net very easily.

The cutting edge assembly according to the present invention includes a drive shaft 61 shaft-mounted at both ends of the driving shaft 61 to receive rotational power, and a shaft hole 41a formed at the center of the disc so as to be fitted to the drive shaft; A spacing holding protrusion 41b formed at the periphery of the shaft hole, a fixing pin hole 41c formed at one side of the spacing holding protrusion, and a triangular-shaped space portion further widened inward toward the center from the outer circumferential surface through the opening 41d. 41e, several disk members 41 which consist of 41f of protrusion pins which protrude toward the center part from the inner side walls of the space part 41e, and can be wound around and fixed to the disk members 41 Most of the area left by the edge 42b is formed into a rectangular cutting edge hole 42c, and is repeatedly arranged with the hook hole 42d on both sides of the edge 42b to the hook pin 41f. Comprising a plurality of connecting pieces (42a) formed to hang The blade 42 is assembled and configured.

Description

Cutting blade assembly for electric razor {Cutting Blade Assembly for Electric Razor}

The present invention relates to a rotary drum type electric shaver, and more particularly, to a cutting blade assembly for an electric shaver improved in order to assemble a drum type cutting blade assembly that rotates within the safety net very easily.

The cutting edge assembly of the conventional rotary drum type electric shaver is formed with a plurality of cutting edges 11 inclined spirally on the entire outer circumferential surface of the cylindrical body 1, and the safety net is covered thereon. The cutting action is to be made between.

The cutting edge 11 may be formed by directly cutting a cylindrical body made of metal, and may be attached to the outer circumferential surface of the cylindrical body by processing the blade portion with a separate metal member.

However, when the metal cylindrical body is directly cut and formed, the workability is inferior, and when the blade is processed with a separate metal member and joined to the cylindrical body, it is difficult to mass-produce because the productivity is poor. The disadvantage is that the price increases.

It is an object of the present invention to provide a cutting blade assembly for electric razors which can be mass-produced according to simple assembly by forming a rotating cutting blade assembly composed of disc members produced by injection molding and blades produced by press molding. .

Another object of the present invention is to provide a cutting blade assembly for an electric shaver, which considers the disk members assembled to form a cylindrical shape and a blade wrapped around the blade to form an assembly structure more easily.

In order to achieve the above object, the cutting blade assembly for the electric shaver of the present invention has a drive shaft which is driven at both ends of the driven shaft to receive rotational power, and a shaft hole formed at the center of the disc so as to be fitted to the drive shaft, and around the shaft hole. A spacing holding protrusion formed at the side, a pin hole formed at one side of the spacing holding protrusion, a triangular space portion further widened inward from the outer circumferential surface toward the center from the outer circumferential surface, and a locking pin protruding toward the central portion from both inner walls of the space portion; Several disc members consisting of, fixed rods inserted into the pin holes of the discs to prevent the flow of the discs, and the size that can be wound around the disc members to secure the area formed with a rectangular cutting hole Repeatedly arranged with the hook hole on both sides of the rim to form the hook pin It consists of a blade plate consisting of several connecting pieces, and a pair of rod members that are hooked to both corners of the space to prevent loosening of the end after the connecting pieces of the blade to the hook pin.

1 is a perspective view showing a cutting edge for a conventional electric shaver

Figure 2 is a sectional view of the razor showing the assembled state of the present invention

Figure 3 is an exploded perspective view of the main part of the present invention

4 is a plan view of the blade

Figure 5 is a longitudinal cross-sectional view cut a disc member portion

Figure 6 is a longitudinal cross-sectional view showing another assembled state of the disc member portion

<Code Description of Main Parts of Drawing>

2: main body 3: motor 4: cutting edge assembly

5: safety net 6: power transmission mechanism 40: cylindrical part

41 disc member 42 blade 43 fixed rod

44 bar member 61 drive shaft 62 driven gear

41a: Shaft hole 41b: Spacing holding protrusion 41c: Pin hole

41d: Opening part 41e: Space part 41f: Hanging pin

42a: Connecting piece 42b: Rim 42c: Square hole

42d: Hanger

In FIG. 2, the electric shaver is composed of a main body 2, a motor 3 inside the main body, and a power transmission mechanism 6 for transmitting the rotational force of the motor to the drive shaft 61 of the cutting blade assembly 4, The safety net 5 is covered on the cutting edge assembly 4.

In FIG. 3, the cutting edge assembly 4 includes several disc members 41, blades 42, a fixed rod 43, and a rod member 44 for constituting the drive shaft 61 and the cylindrical portion 40. Is made of.

The driving shaft 61 is shaft-mounted at both ends thereof so as to be driven with a driven gear 62 so as to receive power from the driving gear of the power transmission mechanism 6.

The disc member 41 is for forming the cylindrical portion 40 by sewing several pieces to the drive shaft 61, and the shaft hole 41a formed at the center thereof and the gap maintaining protrusion 41b formed around the shaft hole 41a. And the central portion of the pin hole 41c formed on either side of the disc and the triangular space portion 41e further widened inward toward the center portion through the opening portion 41d from the outer circumferential surface and the inner walls of both sides of the space portion 41e. It is formed by the hook pin 41f which protruded toward.

At this time, in order to prevent the disc member 41 from being rotated separately, the pin rod 41c is fitted with a fixing rod 43.

The blade 42 is a size that can be wound around the disk member 41 to be fixed. The blade 42 is formed with a rectangular cutting hole 42c that forms most of the area of the edge 42b, and on both sides of the edge 42b. A plurality of connecting pieces 42a having hook holes 42d at the ends are formed.

Then, after hooking the connecting pieces (42a) of the blade 42 to the hook pin (41f) in the disc member 41, the rod member 44 in both corners of the space portion (41e) to prevent the end of loosening ) Is supposed to fit.

Assembling the drive shaft 61, the disc member 41, the fixed rod 43, the blade 42 and the rod member 44 as shown in the cross-sectional view of FIG.

In more detail, assembling process, the predetermined number of disc members 41 are inserted on the drive shaft 61, and the driven gear 62 is axially installed at both ends thereof to be connected to the power transmission mechanism 6 later. Make sure

Then, the fixing rod 43 is inserted into the pin hole 41c formed on the plane of the disc member 41 to prevent the disc members 41 from being rotated respectively.

Subsequently, the hook pins 41f of the blade 42 are inserted into the space portion 41e through the opening 41d of the disc member 41 at each corresponding position, and the hook hole 42d at the end thereof is inserted. Insert into the hanger pin (41f).

When all of the connecting pieces 42a on one side are fitted and fixed, the edges of the openings 41d are wound and the blades 42 are turned to the opposite sides to cover the cylindrical surface composed of two disc members 41.

When the other end of the blade 42 comes over the opening 41d again, the connecting pieces 42a are inserted into the opening 41d again, and then the hook holes 42d at the ends are fitted to each of the hook pins 41f. Fix it.

At this time, since each of the hook pins 41f hooked to both connecting pieces 42a may be released, the rod members 44 are disposed in the corners of the triangular space portion 41e, that is, the inner corners of the connecting pieces 42a. Make sure that the end of the hook pin 41f is always pressed.

On the other hand, assembling method of the blade 42 can be assembled more simply as shown in FIG.

This is to assemble the end of the one side connecting piece (42a) by hooking on the opposite hook pin (41f) in the space (41e) to cross each other, in order to assemble so that the connecting piece extending from the left and right of the blade (42) ( 42a) are not formed on the same line but as shown in FIG. 4, the first side is formed on the odd-numbered disc member 41 and the other side is even-numbered disc member 41.

Cutting blade assembly of the electric shaver according to the present invention is composed of a rotating drum type, the disk member for forming a cylindrical portion continuously inserted on the drive shaft and the blade surrounding the circumference of each of the injection molding method and press molding method to produce easily assembled There is an advantage that mass production is possible.

In addition, when the blade is wound around the disk member to assemble, it is a very useful design having the advantage that it can be assembled without using a separate adhesive or assembly tool.

Claims (1)

A drive shaft 61 shaft-mounted at both ends of the drive shaft 61 to receive rotational power; Openings from the outer circumferential surface of the pin hole 41c and the outer circumferential surface formed at one side of the shaft hole 41a and the gap holding protrusion 41b formed around the shaft hole 41a and the shaft hole 41a so as to be fitted to the drive shaft 61. Several disc members 41 comprising a triangular space portion 41e which is wider inwardly toward the center through 41d) and a hook pin 41f that protrudes toward the center from both inner walls of the space portion 41e. With; A fixing rod 43 inserted into a pin hole 41c of the discs to prevent the flow of the disc members 41; It is a size that can be wound around the disk member 41 and fixed. The area of the edge 42b is formed by a rectangular cutting hole 42c, and the hook hole 42d is formed on both sides of the edge 42b. A blade plate (42) consisting of several connecting pieces (42a) formed to be arranged on the hook pin (41f) by repetitively arranging with; It consists of a pair of rod members 44 which are hooked into the corners of both sides of the space portion 41e in order to hang the connecting pieces 42a of the blade 42 to the hook pin 41f and then to prevent loosening of the ends thereof. A cutting edge assembly for an electric shaver.