JP2528189Y2 - Electric razor outer blade protection cap - Google Patents

Description

[Detailed description of the invention] [Industrial applications]

The present invention relates to a cap for protecting an outer blade of an electric razor, and particularly to a cap in which the outer blade is a cassette type mounted on a carrier.

[Prior art]

In recent years, in the case of using a reciprocating electric razor whose outer blade is formed by bending a thin metal plate with a large number of blade holes into a semicircular shape, in order to prevent damage to the outer blade when replacing the outer blade The mainstream is one that can be replaced while mounted on a carrier, that is, one that employs a cassette type outer blade. In this type, the operating section for attaching and detaching the outer blade is provided on both end faces of the carrier, and the operating section is pushed in so that the outer blade can be removed together with the carrier. In this case, the cap that is removably attached to protect the outer blade and covers the outer blade covers the outer blade because the operation unit provided on the carrier is formed as a convex for the pushing operation. However, in many cases, both end surfaces of the carrier provided with the operation unit are not covered.

[Problems to be solved by the invention]

However, with such a shape, there is a problem that the cap is likely to fall off.Therefore, even a cap that is cylindrical and has a shape that covers not only the outer blade but also the operation portion of the carrier is also required. However, this has a problem that the opening edge is easily caught by the operation portion of the carrier when the carrier is attached, and the carrier cannot be smoothly attached or detached. The present invention has been made in view of the above points, and its purpose is to completely cover the cassette type outer blade, so that it does not come off accidentally, and an electric shaver that can be smoothly attached and detached. To provide an outer blade protection cap.

[Means for Solving the Problems]

Thus, the present invention is a tubular cap that is detachably attached to an electric razor having a cassette type outer blade mounted on a carrier and covers the outer blade and the carrier,
The main feature is that a guide groove for guiding a detachable operation unit provided as a protrusion on the carrier is provided on the inner surface, and contact holding along the ridge line on the side surface of the outer cutter side member on both sides of the guide groove. It is characterized in that it has a part. [Operation] According to the present invention, since the cap is cylindrical, it can completely cover the outer blade and can be prevented from being accidentally detached. In the cassette type outer blade, the operating part of the carrier does not hinder the attachment and detachment, and in the case of having a contact holding part along the ridge line on the side surface of the outer blade side member, positioning is performed by contact between the ridge line and the contact holding part. Therefore, the attachment and detachment can be performed more smoothly. [Embodiment] Hereinafter, the present invention will be described in detail with reference to an illustrated embodiment. The illustrated electric shaver has an outer shape of a business card size including a cap 15 for protecting an outer blade and a thickness of about 1 cm. The main body 1 in which the switch handle 8 is disposed on the side surface and the battery cover 7 is slidably disposed on the bottom surface has a thin outer blade frame 14 on the upper part thereof. At the upper end of this outer blade frame 14, a carrier
A cassette-type outer blade 2 mounted on 20 is attached. The main body 1 here is, as apparent from FIG.
It is composed of a pair of housings 11 and 12 that form a component arrangement space between opposing surfaces when combined with each other, and a cylindrical cover 10 that is placed around both of them, and the inside of one side in the width direction is a gum type. The storage part for the flat and elongated rechargeable battery 6, the lower part near the center on the other side is the storage part for the motor 4, and the storage part for the slide switch 8 near the other side is the storage part. A drive rod 5 that constitutes a drive mechanism for causing the inner blade 3 that slides on the inner surface of the blade 2 to reciprocate is disposed at the upper center. The openings 13 formed in the housings 11 and 12 are portions into which the motor 4 is fitted at the time of assembly, and are formed by the motor 6 which has become the thickest part due to the adoption of the flat secondary battery 6. As is apparent from FIG. 4, the thickness limit is formed so as to be as small as possible. The storage portion of the secondary battery 6 is formed so that the thickness direction of the secondary battery 6 and the thickness direction of the main body 1 coincide with each other so that the main body 1 can be made thin. A cathode terminal 88 is provided as a battery contact spring having: a pressing spring piece 89 formed integrally with the cathode fitting 87 on the surface on the housing 11 side; and a pressing spring piece 89 on the housing 12 side. As shown in FIG. 6, an elastic body 66 such as rubber is disposed on the facing surface of the elastic member 66. The pressing spring piece 89 presses the secondary battery 6 loaded in the storage chamber from the bottom surface side of the main body 1 against the elastic body 66, thereby eliminating the rattling of the secondary battery 6. The slide switch 8 has a contact spring 80 attached to a portion located inside the housings 11, 12, and has a pair of elastic leg pieces 81, 81 integrally as shown in FIG. These elastic leg pieces 81, 81 give clicks to the vertical movement of the slide switch 8 by engaging with click projections 84, 84 formed on the opposing surfaces of the housings 11, 12. Both ends of the U-shaped metal leaf spring 82 are engaged with the distal ends of the elastic leg pieces 81, 81, respectively.
The spring force is applied in the direction to expand Due to the presence of the leaf spring 82, the click due to the engagement of the elastic leg pieces 81, 81 with the click projection 84 is not only crisp but also does not settle. . The battery cover 7 disposed on the bottom surface is slidable by engaging both side edges thereof with guide grooves formed in the housings 11 and 12.
Anode fitting that connects the anode of the motor and the motor fitting 86
70 is fixed. The loading of the secondary battery 6 into the main body 1 is performed while the battery cover 7 is slid and the lower opening of the battery storage chamber is opened, and then the battery cover 7 is closed to close the lower opening. Anode of secondary battery 6 and motor bracket
86 is connected by the anode metal fitting 70, but the secondary battery 6 loaded in the storage chamber is urged in the direction of protruding downward by the spring urging by the cathode terminal 88. An inclined surface 72 is formed on the edge of the battery cover 7, and when the battery cover 7 is slid to close the storage chamber, the inclined surface 72 comes into contact with the lower end of the secondary battery 6 so that the secondary battery 6 is It is pushed in. Therefore, the battery cover 7 can be smoothly opened and closed without being caught by the secondary battery 6. Further, the anode fitting 70 attached to the battery cover 7
Is formed with an engagement concave portion 76 in which a small projection provided on the motor bracket 86 is engaged, and when the battery cover 7 is closed,
A sound is generated when the projections fall into and engage with the engagement recesses 76, so that the user can clearly determine whether or not the battery cover 7 is closed. The upper end of the inner blade 3 having a built-in spring 54 is connected to the inner blade 3, and the drive rod 5 is pivotally supported in the middle by a shaft 50 and a bearing metal 51. It is connected to an eccentric shaft 41 with a balancer attached to the output shaft of the motor 4 via a motor, and a weight 53 for canceling the inertia of the inner blade 3 is attached to the lower part. The connecting portion between the driving rod 5 and the arm 44 includes a spherical ball 55 provided at the lower end of the driving rod 5 and a socket 45 formed at one end of the arm 44 as a concave part having a semispherical inner surface.
Thus, the ball 55 fitted in the socket 45 can move three-dimensionally with respect to the socket 45. In the figure, reference numeral 52 denotes a ring disposed on the end face of the bearing metal 51. Therefore, if the secondary battery 6 is connected to the motor 4 by operating the slide switch 8 and the motor 4 is rotated, the left-right movement component in FIG. The inner blade 3 attached to the upper end of the driving rod 5 reciprocates as a result of being transmitted to the lower end of the driving rod 5 by 44 and swinging the driving rod 5. At this time, the arm 44 and the driving rod 5 are connected by a ball joint, and the ball joint moves even if the ball 55 moves up and down in the socket 45 as the driving rod 5 swings.
The contact area between the arm 44 and the socket 45 is kept large. Therefore, the movement of the arm 44 is transmitted to the drive rod 5 without waste, and the movement transmission efficiency is high. The ball 55 in the ball joint is cut so that a part of the outer surface thereof is flat, and forms an oil reservoir between the inner surface of the socket 45 and the flat portion 58.
The lubricating oil is always spread over the contact surface with the 45. From the lower end of the ball 55, a rectangular engaging portion 57 is integrally formed via a small-diameter shaft portion.
A rectangular engagement hole 46 is formed in the bottom surface of the 45. This is for preventing the drive rod 5 from coming out of the arm 44. When the engaging portion 46 is inserted into the engaging hole 46 with the longitudinal directions of the engaging hole 46 and the engaging portion 57 aligned during assembly. When the ball 55 is fitted into the socket 45 and the arm 44 is rotated by 90 ° about the axis of the drive rod 5, the engagement hole 46 intersects with the engagement portion 57, and the ball from the socket 45 is intersected. 55 stops are made. Reference numeral 28 in the figure denotes dustproof rubber. Now, the outer cutter frame 14 at the upper part of the main body 1 is tapered so as to become thinner toward the upper end, and when the cap 15 is put on for protection of the outer cutter 2, the outer cutter frame 14 is also covered with the cap 15. The outer surface of the main body 1 and the outer surface of the cap 15 are continuous without any level difference.
Because it has a shape that slightly protrudes from the side of the outer blade frame 15, it is attached to both ends of the synthetic resin holder 16 attached by double-sided adhesive tape 19 inside the cap 15 Are formed as a pair of leg pieces 17, 17 each serving as an elastic locking piece for mounting the cap 15, and the groove between the two leg pieces 17, 17 is used as a guide groove for the attaching / detaching operation portion of the carrier 20, The cap 15 can be smoothly covered without the cap 15 being caught on the carrier 20 of the outer cutter frame 14 or the outer cutter 2. In particular, since the inner surface of each leg piece 17 comes into contact with the ridge line on the side surface of the outer cutter frame 14, and the position of the cap 15 is maintained, the cap 15 can be securely attached and detached without being caught.

[Effect of the invention]

As described above, in the present invention, since the cap is cylindrical, it is possible to completely cover the outer blade and prevent the outer blade from being accidentally detached. Even though the carrier provided with the detachable operation unit is also covered, since the guide groove exists, the operation unit of the carrier in the cassette type outer blade does not hinder the attachment and detachment of the cap, The cap can be smoothly attached and detached. Further, in the case where the contact holding portion is provided along the ridge line on the side surface of the outer cutter side member, positioning is performed by the contact between the ridge line and the contact holding portion, so that the attachment and detachment can be performed more smoothly.

[Brief description of the drawings]

1 is a perspective view of one embodiment of the present invention, FIG. 2 is a perspective view of the same with the cap removed, FIG. 3 is a vertical sectional view of the same,
FIG. 4 is a transverse sectional view of the same, FIG. 5 is an exploded perspective view of the same,
6 and 7 are transverse sectional views of the same, FIG. 8 is a bottom view of the same, FIG. 9 is a horizontal sectional view of the same, FIG. 10 is a partial longitudinal sectional view of the same, and FIG. 1 is a partial cross-sectional view, wherein 1 is a main body, 2 is an outer blade, 3 is an inner blade, 15 is a cap, 16 is a holder, and 20 is a carrier.

Claims (2)

(57) [Scope of request for utility model registration] A cylindrical cap removably attached to an electric razor having a cassette type outer blade mounted on a carrier and covering the outer blade and the carrier, the cylindrical cap being provided as a projection on the carrier. An outer blade protection cap for an electric razor, wherein a guide groove for guiding an operation unit is provided on an inner surface. 2. The outer blade protection cap for an electric razor according to claim 1, further comprising contact holding portions on both sides of the guide groove, the contact holding portions being provided along a ridge line on a side surface of the outer blade side member.