JPH0817858B2 - Reciprocating electric razor outer blade mounting structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reciprocating electric shaver in which an inner blade is reciprocated.

[Prior Art] Conventionally, in a reciprocating electric shaver, an outer blade that slidably contacts an inner blade is attached to a razor body as an outer blade case attached to the razor body, and the outer blade and the outer blade are curved. There is an outer blade unit that includes an outer blade that is held by the outer blade and is attached to the outer blade case, and an outer blade unit that includes a mounting frame.

With this outer blade mounting structure, the outer blade mounting frame of the outer blade unit is detachably attached to the outer blade case mounted on the razor body.When cleaning, etc., remove the outer blade mounting frame from the outer blade case. I have to. In this structure, a detachable member is provided so that the outer blade mounting frame can be easily attached to and detached from the outer blade case.

Conventionally, the structure shown in FIG. 5 has been adopted to provide the detachable member.

FIG. 5 shows the outer blade mounting portion at one end of the electric shaver in the left-right direction. In the figure, a is a main body case of an electric razor, b is an inner blade base with an inner blade c attached, d is an outer blade case mounted on the main body case a, e is an outer blade, and f is an outer blade attachment with an outer blade e attached. It is a frame. The outer blade mounting frame f has elastic claws g at its end. The outer blade e and the outer blade mounting frame f constitute an outer blade unit. Reference numeral h denotes a direct detaching member arranged inside the outer blade case d. The attachment / detachment member h has an L shape, and a protrusion i, an operator j, and a claw k are formed on the elastic standing portion. The attaching / detaching member h is attached to the outer blade case d by using the screw n for attaching the outer blade case d to the main body case a by contacting the horizontal portion with the outer blade case d. Further, the upright portion of the detachable member h has a hole 1 through which a pin m formed on the outer blade case d is swaged. The operator j of the attachment / detachment member h projects outside through a hole formed in the outer blade case d.

When attaching the outer blade unit, the outer blade mounting frame f is covered on the outer blade case d, and the elastic claw g is attached to the detachable member h.
It engages with the claw k. When the outer blade unit is removed, the operator j is pressed to deform the upright portion of the attachment / detachment member h with the projection i to remove the elastic claw g from the claw k.

[Problems to be Solved by the Invention] In the detachable member h, when the outer blade unit is detached from the outer blade case d, the operator j is pressed to elastically deform the upright portion with the lower end as a fulcrum, and the protrusion i of the upright portion is removed. Mounting frame f
Push the elastic claw g to remove. At this time, the smaller the force pushing the protrusion i, the lighter the operation of the detachable member h. To do this,
It is preferable that the distance S from the lower end of the rising portion of the detachable member to the protrusion j is large.

However, the attachment / detachment member h has a limit in increasing the distance S from the lower end of the upright portion to the protrusion i from the point of its attachment structure, and as a result, there is a limit in reducing the pushing force of the protrusion i. It is difficult to lighten the operation of the member h.

Further, in the conventional outer blade mounting structure, a special screw n is required to mount the detachable member h on the razor body a, so that the number of parts is large and the configuration is complicated, and the work for attaching the detachable member h is also performed. It is troublesome.

The present invention has been made based on the above circumstances, and the reciprocating electric shaver has a structure in which the detachable member can be easily operated to remove the outer blade unit, and at the same time, the structure and work for attaching the detachable member is simple. It is an object of the present invention to provide an outer blade mounting structure of.

[Means for Solving the Problems] In order to achieve the above object, an outer blade mounting structure for a reciprocating electric shaver according to the present invention has an outer blade case mounted on a razor body, an outer blade having flexibility, and An outer blade unit that includes an outer blade mounting frame that is detachably attached to the outer blade case while holding the edge of the outer blade in a curved state, and elastically deforming the outer blade mounting frame to the outer blade unit. A detachable member having a protrusion for releasing from a state of being attached to the blade case, a space portion is formed between the razor body and the outer blade case, and the detachable member is arranged in the space portion. It is characterized in that it is held by the razor body and the outer blade case.

Further, the outer blade mounting structure of the reciprocating electric shaver of the present invention is an outer blade case mounted on the razor body and having an engaging portion, a flexible outer blade, and a state in which the outer blade is curved. The outer blade mounting frame having an outer blade mounting frame having elastic claws releasably engaging with the engaging portion of the outer blade case and elastically deforming the outer blade mounting frame. An attaching / detaching member having a projection for releasing the state of being attached to the outer blade case, a space portion is formed between the razor body and the outer blade case, and the attaching / detaching member is arranged in the space portion. It is held by the razor body and the outer blade case.

[Operation] According to the present invention, the distance between the lower end of the attachment / detachment member and the protrusion can be made longer than in the conventional case, and the detaching operation of the outer blade unit by the attachment / detachment member can be performed easily. That is, the peripheral side portion of the outer blade case is attached so as to cover the peripheral side portion below the upper end surface of the razor body. Therefore, by positioning the lower portion of the detachable member in the gap between the peripheral side portion of the outer blade case and the peripheral side portion of the razor body and placing the protrusion above the gap, the lower end of the detachable member and the protrusion A long distance can be secured between them. No special parts such as screws are used to fix the detachable member to the razor body.

Further, according to the present invention, by providing the outer blade case with the engaging portion with which the elastic claw of the outer blade unit is engaged, the detachable member only needs to be provided with the protrusion for removing the outer blade unit. The configuration is simple and the detachable member can be easily manufactured.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

An embodiment of the reciprocating electric shaver of the present invention will be described with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a main body case which is a razor main body, and a step portion 1a is formed in a circumferential direction at an upper end portion of the main body case 1 for fitting an outer blade case, and a cross section of a portion above the step portion 1a. Is smaller than the lower cross section. An electric motor 2 is provided inside the main body case 1, a reciprocating body 3 for converting the rotation of the electric motor 2 into a reciprocating linear movement along the left-right direction of the main body case 1, and the reciprocating body 3 thereof.
There is provided a drive shaft 4 which is connected to and reciprocates linearly. The drive shaft 4 is movably supported in the axial direction and the circumferential direction along the vertical direction by the shaft support portion 5 and extends upward from the upper end surface of the main body case 1. An inner blade base 6 extending in the left-right direction of the body case 1 is attached to the drive shaft 4 extending from the upper end surface of the main body case 1, and a large number of inner blades 7 are axially spaced on the inner blade base 6. It has been installed. An upward force is applied to the drive shaft 4 and the inner blade 6 by a compression coil spring 8.

Reference numeral 9 denotes an outer blade case provided to cover the upper end of the main body case 1. The outer blade case 9 has a main plate portion 10, side plate portions 11 and a pair of end cover portions 12. The main plate portion 10 is laterally elongated along the left-right direction of the upper end surface of the main body case 1, and has a hole 13 for passing the drive shaft 4 in the central portion and mounting holes 14 in both end portions. The main plate portion 10 is superposed on the upper end surface of the main body case 1, and is attached to the main body case 1 by screws 17 passing through the respective mounting holes 14. The screw 17 is screwed into the reciprocating body 3 from the upper surface of the body case 1. The side plate portions 11 are formed on both sides of the main plate portion 10 so as to face downward, and the main body case 1
The peripheral side portion above the step portion 1a is covered from the outside. The end cover portion 12 extends in the vertical direction at a height obtained by adding the height from the step portion 1a of the upper end portion of the main body case 1 to the upper end surface and the height from the upper end surface to the upper and outer peripheral surfaces of the inner blade 8. In addition, the outer blade case has a cover-shaped surface that is open to the inside, and a space for accommodating a detachable member 24, which will be described later, is formed inside. That is, the end cover 12
A space having a thickness corresponding to the thickness of the attaching / detaching member 24 is formed between the outer side wall of the main body case 1 and the upper peripheral side wall of the main body case 1. A hole 15 is formed in the outer side wall of the end cover portion 12 at a portion above the main plate portion 10.
The upper end of the end cover portion 12 is curved similarly to the inner blade 7,
A groove 16 is formed in the inner portion along the bending direction.

An outer blade unit 18 is composed of an outer blade 19 and an outer blade mounting frame 20. The outer blade 19 is made of a flexible metal. A plurality of mounting holes 21 are provided on both side edges of the outer blade 19.
Are formed. The outer blade mounting frame 20 is made of an elastic material and is horizontally long corresponding to the length of the upper end surface of the main body case 1 in the left-right direction. Both ends of the outer blade mounting frame 20 are walls that have curved edges and stand upright. The walls of these ends are vertically sandwiched by cuts and are elastically displaced with the upper end as a fulcrum. The elastic claw 22 formed of an elastic piece and a claw formed at the lower end of the elastic piece is locked. A plurality of mounting bosses 23 are formed side by side on both inner surface portions of the outer blade mounting frame 20. Outer blade 19
Is a kamaboko shape and both side edges are inserted into both sides of the outer blade mounting frame 20, and are attached to the outer blade mounting frame 20 by inserting the mounting boss 23 into the mounting hole 21 and caulking. . The outer blade unit 18 is arranged on the main plate portion 10 of the outer blade case 9 so as to be sandwiched between the end cover portions 12.

Reference numeral 24 denotes a pair of detachable members formed of an elastic material. The detachable members 24 are the height from the stepped portion 1a of the main body case 1 to the upper end surface and the height from the upper end surface to the upper peripheral edge portion of the inner blade 8. It extends vertically with the height of Sato added. The upper peripheral edge of the detachable member 24 is curved like the inner blade 7. An elastic piece 25 is formed in the central portion of the attaching / detaching member 24 so as to be sandwiched by a score line and extends in the vertical direction. The elastic piece 25 is elastically displaced with the lower end as a fulcrum. That is, the elastic piece 25 has a height reaching from the lower end of the detachable member 24 (the step portion 1a of the main body case 1) to a position beyond the upper end surface of the main body case 1. A protrusion 26 is formed on the upper end of the elastic piece 25 on the side facing the inside of the main body case 1, and an operator 27 facing the outside of the main body case 1 is formed on the upper end of the elastic piece 25.
On the side surface of the detachable member 24 facing the inside of the main body case 1, an engaging portion 28 is formed above the protrusion 26 of the elastic piece 25. Further, ribs 29 are formed on the upper peripheral edge of the detachable member 24.

Each detachable member 24 is housed and provided in each end cover portion 12 of the outer blade case 9. That is, a space is formed between the peripheral side wall above the step 1a of the main body case 1 and the wall of the end cover 12 facing the peripheral side wall.
The lower half of the attachment / detachment member 24 is arranged in this space and is sandwiched between the peripheral side wall of the main body case 1 and the wall of the end cover portion 12.
Further, the ribs 29 on the upper peripheral edge of the detachable member 24 are
It is engaged with the groove 16 on the inner surface of the upper peripheral edge portion. The lower end of the attachment / detachment member 24 is placed on the upper surface of the step portion 1 a of the main body case 1. Detachable member
The protrusion 26 and the operator 27 formed on the upper end of the elastic piece 25 of 24 are the main plate portion of the outer blade case 9 located on the upper end surface of the main body case 1.
Located on the upper side of 10, the operator 27 projects to the outside of the end cover 12 via the through hole 15 of the end cover 12. In such a configuration in which the attaching / detaching member 24 is attached to the outer blade case 9, it can be fixed to the outer blade case 9 without using a screw as in the conventional case.

In this way, the detachable members 24 provided on the end cover portions 12 of the outer blade case 9 face the end walls of the outer blade mounting frame 20 arranged on the main plate portion 10 of the outer blade case 9. . The lower end claw portion of the elastic claw 22 formed on the end wall of the outer blade mounting frame 20 is located opposite to the engaging portion 28 of each detachable member 24, and the claw portion is engaged by the elasticity of the elastic piece portion. The portion 28 is engaged with the lower side. Further, the protrusion 26 of the elastic piece 25 faces the claw portion of the elastic claw 22.

Therefore, when the outer blade unit 18 is attached to the outer blade case 9, each detachable member 24 is housed in the end cover portion 12 and the outer blade case 9 is attached to the main body case 1 in advance. Then, the outer blade unit 18 is attached to each end cover portion of the outer blade case 9.
The outer blade mounting frame 20 is inserted between the upper blades 12 and arranged on the main plate portion 10 of the outer blade case 9. In this process, the elastic claws 22 on each end wall of the outer blade mounting frame 20 are engaged with the engaging portions 28 of each detachable member 24.
The outer blade mounting frame 20 is pushed down by the engaging portion 28 to elastically displace inside the outer blade case 9 to get over the engaging portion 28, and finally elastically displace to the original position. It engages with the lower side of the engaging portion 28. As a result, the outer blade mounting frame 20 is fixed to the outer blade case 9. When the outer blade unit 18 is attached to the outer blade case 9, the inner blade 7 contacts the inner surface of the outer blade 19 by the spring force of the compression coil spring 8.

Next, when the outer blade unit 18 is removed from the outer blade case 9, the elastic pieces 25 of the detachable members 24 are moved to disengage the elastic claws 22 of the outer blade mounting frame 20 from the engaging portions 28 of the detachable members 24. .
That is, when the operator 27 protruding outward from the hole 15 of the end cover portion 12 of the outer blade case 9 is pushed toward the inner side of the outer blade case 9, the elastic piece 25 of the detachable member 24 moves outwardly around the lower end. The elastic piece 25 is elastically displaced toward the inside of the blade case 9 to project the elastic piece 25.
26 pushes the claws of the elastic claws 22 of the outer cutter mounting frame 20 engaged with the lower side of the engaging parts 28 of the detachable member 24 toward the inside of the outer cutter case 9 to remove them from the engaging parts 28. As a result, the outer blade unit 18 is released from the fixing of the outer blade case 9. Then, the inner blade 7 pushes up the outer blade 19 by the spring force of the compression coil spring 8, so that the entire outer blade unit 18 is lifted and the outer blade unit 18 can be removed.

Here, the distance S from the lower end (fulcrum) of the elastic piece 25 of the detachable member 24 to the protrusion 26 is compared with the distance S from the main plate portion 10 of the outer blade case 9 to the protrusion in the elastic pawl of the conventional detachable member. The length from the lower end of the elastic claw 25 to the main plate portion 10 of the outer blade case 9 is long. Therefore, the operation force required for elastically displacing the elastic piece 25 is significantly smaller than that in the conventional case, and the operation becomes very light.

3 and 4 show another configuration of the outer blade mounting structure of the electric razor of the present invention.

With this configuration, as shown in FIG. 3, the end cover portion 12 of the outer blade case 9 is formed with an engaging portion 28 with which the elastic claw 22 of the outer blade mounting frame 20 is engaged, and as shown in FIG. In addition, the attaching / detaching member 24 does not have the engaging portion 28. Therefore, when the outer blade unit 18 is set in the outer blade case 9, the outer blade mounting frame 20
The elastic claw 22 engages with the engaging portion 28 formed on the end cover portion 12 of the outer blade case 9 to fix the outer blade mounting frame 20.

With this structure, the structure of the detachable member 24 is simplified, which facilitates the molding of the detachable member 24.

It should be noted that the present invention is not limited to the above-described embodiments, but can be modified and implemented in various ways.

[Advantages of the Invention] As described above, according to the outer blade mounting structure of the reciprocating electric shaver of the present invention, a space is formed between the razor body and the outer blade case, and the detachable member is used as the space. Since the razor body and the outer blade case hold it in place, the distance between the lower end of the attachment / detachment member and the protrusion can be made longer than in the past, and the removal operation of the outer blade unit by the attachment / detachment member is made easier. Therefore, it is not necessary to use a special component such as a screw for fixing the detachable member to the razor body, and the structure and operation for attaching the detachable member are simple.

Further, according to the outer blade mounting structure of the reciprocating electric shaver of the present invention, the outer blade unit is detached from the detachable member by providing the outer blade case with the engaging portion with which the elastic claw of the outer blade unit is engaged. Since it is only necessary to provide the protrusion, the structure of the attaching / detaching member is simple and the manufacturing is easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing an outer blade mounting portion of a reciprocating electric shaver according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing the outer blade mounting portion in the same embodiment, and FIG. FIG. 4 is a sectional view showing an outer blade mounting portion in the embodiment, FIG. 4 is a perspective view showing a detachable member in the same embodiment, and FIG. 5 is a sectional view showing an outer blade mounting portion of a reciprocating electric shaver in a conventional example. 1 …… Main body case (razor body), 9 …… Outer blade case, 19 …… Outer blade, 20 …… Outer blade outer blade mounting frame, 24 …… Removable member.

Claims (2)

[Claims] 1. An outer blade case attached to a razor body, an outer blade having flexibility, and an edge portion of the outer blade which is curved and held so that it can be attached to and detached from the outer blade case. An outer blade unit including an outer blade mounting frame to be mounted; and an attachment / detachment member having a protrusion that releases the outer blade mounting frame from the state of being attached to the outer blade case by elastic deformation, the razor body and the razor body An outer blade mounting structure for a reciprocating electric shaver in which a space is formed between the outer blade case and the detachable member is disposed in the space and is held by the razor body and the outer blade case. 2. An outer blade case formed with an engaging portion and attached to a razor body, an outer blade having flexibility, and holding the edge of the outer blade in a curved state and holding the edge thereof. An outer cutter unit including an outer cutter mounting frame having elastic claws that releasably engages with an engaging portion of the case, and releases the outer cutter mounting frame from a state of being mounted on the outer cutter case by elastic deformation. A detachable member having a protrusion, and a space is formed between the razor body and the outer blade case, and the detachable member is arranged in the space to be held by the razor body and the outer blade case. Reciprocating electric razor outer blade mounting structure.