JP2643999B2 - Reciprocating electric razor inner blade - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to an inner blade of a reciprocating electric shaver.

[Prior art]

In a reciprocating electric shaver, an attempt has been made in Japanese Utility Model Laid-Open No. 61-132968 to make the sound generated during shaving a pleasant sound. This is to change the width of the support member that holds a large number of blades side by side, making the blade at the place where the width is small easier to radius, change the natural frequency, and when shaving High frequency and low frequency 2
A variety of shaving sounds are generated.

[Problems to be solved by the invention]

In this case, the shaving sound generated at the time of shaving is certainly comfortable, but the presence of the portion where the blade is easily bent has a problem that the sharpness becomes poor when cutting a thick beard. The present invention has been made in view of such a point, and an object of the present invention is to provide an inner blade of a reciprocating electric razor which can make shaving sound comfortable and at the same time exhibit good sharpness. To offer.

Means for Solving the Problems According to the present invention, there is provided an inner blade comprising a support member for supporting the blades in parallel and a joint for connecting the support member to a drive member. It is characterized in that the rigidity of the blade located at the connection portion with the base is lower than the rigidity of the blade located at other portions. [Function] According to the present invention, by providing a blade having a small rigidity and being easy to bend, a comfortable shaving sound can be obtained as in the above-described conventional example. The contact pressure between the outer blade and the blade is set to be highest in the blade at the water-filled portion by being located at the connection portion with the support member. [Embodiment] Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. As shown in FIG. 3, this reciprocating electric shaver includes an outer blade 1 made of a thin metal plate held on an outer blade frame 2. , An inner blade 4 and a main body 5. A cylindrical connecting portion 50 protruded from one side of the main body 5 and protruding from a driver that is arranged in the main body 5 and converts the rotational motion of the motor into reciprocating motion. The outer cutter 1 is reciprocally driven while being in contact with the inner surface of the outer cutter 1 under the bias of the push-up spring by being connected to the tubular connecting portion 50 thus formed. The inner blade 4 here includes a plurality of inner blades 40,
A support member 41 that supports the blades 40 in parallel and a joint 42 are formed. The joint 42 here has a connecting shaft 43 connected to the cylindrical connecting portion 50 from the center of the lower surface thereof.
And connecting pieces 44, 44 that are connected to the support member 42 from both ends of the upper surface. The connecting pieces 44, 4 of the joint 42 in the support member 41
By reducing the thickness of the portion connected to 4, the rigidity of blade 40 located at the connection portion between joint 42 and support member 41 is made lower than the rigidity of blade 40 located at the other portion. In the inner blade 4, blades 40 having different stiffness are mixed, and when shaving is performed by reciprocating the inner blade 4, different portions have different stiffness, that is, different portions having different easiness of radius. Higher frequencies are 8 to 12 kHz, and lower sounds are generated at low rigidity and easy to bend portions.
By setting it to ~ 8kHz, you get a very pleasant shave. When the blade 40 that is easy to bend is provided in this manner, the sharpness is deteriorated as originally described in the conventional example. It is provided at a connection portion between the 41 and the joint 42, that is, at a portion where the contact pressure with the outer blade 1 becomes highest because a pushing force for pressing the inner blade 4 against the outer blade 1 acts. The high contact pressure is one of the conditions for obtaining good sharpness, and the decrease in sharpness due to low rigidity is covered by the high contact pressure with the outer cutter 1. . Here, depending on the thickness of the support member 41, the blade 40
Although the rigidity of the blade 40 is changed, the rigidity may be changed by changing the thickness of the blade 40 or the like. Further, the frequency of the sound generated during shaving can also be changed depending on the thickness of the blade 40 and the thickness of the support member 41.

【The invention's effect】

As described above, in the present invention, since the rigidity of the blade is partially changed, it is possible to make the sound generated during shaving comfortable, and to reduce the rigidity of the blade. Despite the provision, this part is located at the connection part between the support member and the joint so that the contact pressure with the outer blade is maximized, so that the sharpness coming from the blade's radius is prevented from becoming worse Can be done.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment of the present invention, and FIGS. 2 (a) and 2 (b).
1 is an AA line sectional view and a BB sectional view in FIG. 1, FIG. 3 is an exploded perspective view of the same, 4 is an inner blade, 40 is a blade,
41 is a support member, 42 is a joint.

Claims (1)

(57) [Claims] An inner blade comprising a number of blades, a support member for supporting the blades in parallel, and a joint for connecting the support member to a driving member, wherein the inner blade is connected to a joint and a base. An inner blade of a reciprocating electric razor, wherein rigidity of a blade located in one portion is lower than rigidity of a blade located in another portion.