JP4860827B2 - Razor head protective cap for safety razor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protective cap for a razor head of a safety razor.
[0002]
[Prior art]
As a protective cap for inserting a razor head from its front end edge to protect the cutting edge, there is one disclosed in JP-A-10-314466. In the protective cap disclosed herein, side tabs having hooks and buttons that engage with a razor cartridge are fixed to both ends of the cap via hinges. That is, the cap is removed by pressing the side tabs on both sides of the cap.
[0003]
[Problems to be solved by the invention]
The conventional protective cap has the above-described configuration, and since the side tabs protrude from both sides of the cap, the lateral length of the cap becomes considerably long and is bulky during packaging. Moreover, when it mounts | wears with a safety razor, only a side tab protrudes sideways from the whole safety razor, and there exists a fault that the appearance is bad. Furthermore, since the side tabs protrude from both sides, it is easy to receive external force. When the safety razor is pushed for some reason, there is a strong possibility that the cap and razor cartridge will be disengaged. I do not get.
[0004]
An object of the present invention is to provide a protective cap that is easy to remove and difficult to remove by eliminating the disadvantages of the conventional products.
[0005]
[Means for Solving the Problems]
Claim 1 has a generally rectangular opening slot for inserting a razor head, the mouth opening by at least one of displacement of the pair of peripheral surface opposed to the upper and lower four peripheral surface forming the opening port Means for expanding the width of at least a part of the protective cap , and the means is an upper projecting piece and a lower projecting piece projecting over the bottom surface of the protective cap on the extension of the upper surface portion and the lower surface portion of the protective cap. locking means for locking the razor head is provided on at least one of the peripheral surface portion of said pair of peripheral surface, it is possible to remove the protective cap from the razor head by expanding the width of the mouth opening, the protection The lower surface portion of the cap does not cover the entire lower surface of the protective cap, and the lower surface portion includes an elongated piece extending from the bottom surface portion, so that the displacement is easy. Long However, a hole having a length substantially the same as or longer than the distance from end to end of all of the elongated pieces is provided, and the upper surface of the lower surface portion and the upper surface of the lower projecting piece form the same plane via the holes. It is a connected structure.
[0006]
According to a second aspect of the present invention, the lower surface portion of the protective cap includes an elongated piece extending from the bottom surface portion and an inward flange extending to the lower end of the bottom surface portion, and the flange extending to the bottom surface portion is between the pair of elongated pieces. This is a configuration that does not exist .
[0007]
【Effect of the invention】
The configuration of the present invention is as described above. Claim 1 is configured such that the lower surface portion of the protective cap does not cover the entire lower surface of the protective cap, and the lower surface portion includes an elongated piece extending from the bottom surface portion. The bottom surface is provided with a hole whose lateral length is substantially the same as or longer than the distance from end to end of all the strips. The upper surface of the lower surface portion and the upper surface of the lower protruding piece are connected to each other through the same plane . Therefore, the operation of attaching / detaching the protective cap to / from the razor head can be performed easily and smoothly. In addition, since the lower surface portion is easily twisted in cooperation with the lower projecting piece at the base portion by providing the holes, the lower surface portion can be displaced with a small force to widen the opening.
[0008]
According to a second aspect of the present invention, the lower surface portion of the protective cap includes an elongated piece extending from the bottom surface portion and an inward flange extending to the lower end of the bottom surface portion, and the flange extending to the bottom surface portion is between the pair of elongated pieces. Does not exist. Therefore, since the elongated piece is displaced more easily because there is no flange, the lower surface portion can be displaced with a smaller force to widen the opening.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. The protective cap is an integral molding of plastic and is elongated in the lateral direction. The rear surface of the protective cap is opened to provide an opening 2 for inserting the razor head 1 from its front end. However, the present invention is not limited to this, and the protective cap may insert the razor head 1 from its upper surface. In this case, the opening 1 becomes large according to the size of the plane of the razor head.
[0010]
The upper edges of the side surface portions 3 and 3 of the protective cap have a front-lowering shape from the rear end to the front end. This is because the upper surface of the razor head 1 is made to conform to the shape formed to be lowered forward toward the front end. The front and rear lengths of the side surface portions 3 and 3 are approximately 70% of the front and rear length of the razor head 1. Support protrusions 16 extend in the front-rear direction at the lower portions of the side surface portions 3 and 3 and protrude from the inner surface of the protective cap. This support convex part 16 has the effect | action which hits against the bottom face of the razor head 1 inserted in the protective cap. When the razor head 1 is supported by the support convex portion 16, when a force is applied to push down the front portion of the protective cap, the protective cap is securely mounted without rotating relative to the razor head 1. be able to. If the support convex portion 16 is not present, the protective cap rotates relative to the razor head and is in a front-lowering state, and may be detached from the razor cap.
[0011]
The lower surface portion of the protective cap includes a pair of elongated pieces 4 and 4 provided symmetrically toward the center of the protective cap, and an inward flange 6 provided along the lower end of the bottom surface portion 5. Therefore, the lower surface portion does not cover the entire bottom surface of the protective cap. Further, the flange 6 is not connected in series over the entire length in the lateral direction, and does not exist between the two elongated pieces 4 and 4. Locking projections 7 for locking the razor head are integrally provided at the inner surface tips of the two elongated strips 4, 4. Further, a lower protrusion piece 9 for connecting the elongated pieces 4 and 4 extends on a front extension substantially in the same plane as the elongated piece, and a groove 10 for preventing a finger from slipping is formed on the surface of the lower protrusion piece 9. Is provided.
[0012]
The upper surface portion 8 covers almost the entire upper surface of the protective cap, and has a long recess 11 at the rear end. The reason why the concave portion 11 is provided is that when the shaving aid is mounted in the lateral direction on the upper surface of the razor head 1, the shaving aid is exposed from the concave portion 11 to promote drying. An upper protrusion 12 extends on the extension of the upper surface portion 8, and a groove 13 for preventing a finger from slipping is provided on the surface of the upper protrusion 12. The upper projecting piece 12 is not coplanar with the upper surface portion 8 and is inclined slightly upward, but of course may be coplanar with the upper surface portion 8. The length of the upper protrusion 12 in the horizontal direction is about one third of the length of the protective cap, and is provided at the center of the protective cap. Triangular flanges 14 and 14 are provided on both sides of the upper projecting piece 12. This is because if only the upper and lower protrusions 9 and 12 protrude from the front surface of the protective cap, the upper and lower protrusions 9 and 12 may be caught by an object, so that the protective cap may come off from the razor head. This is to prevent catching.
[0013]
A hole 15 is provided in the center of the bottom surface portion 5, and the horizontal length of the hole 15 is substantially the same as the horizontal length of the pair of elongated pieces 4, 4. By providing the hole 15, the upper surfaces of the elongated pieces 4 and 4 and the upper surface of the lower protruding piece 9 are connected in the same plane. If the hole 15 does not exist, even if the upper and lower protrusions 9 and 12 are pushed so as to approach each other and the opening 2 is to be expanded, the strength of the bottom surface portion 5 acts and cannot be sufficiently expanded. It takes a lot of power to expand. By providing the hole 15, the strength of the bottom surface portion 5 does not act on that portion, and only the flange 6 integrally connected to the side restricts the swinging of the elongated pieces 4, 4. Since the flange 6 has a narrow front and rear width, it is easy to bend. By pushing the upper and lower protrusions 9 and 12 so as to approach each other, the elongated pieces 4 and 4 swing downward, and the locking projection 7 at the tip of the elongated piece is moved. Can be displaced.
[0014]
When attaching the protective cap of the present invention to the razor head 1, when the razor head 1 is inserted into the opening 2 from the tip, the locking projections 7, 7 abut against the bottom surface of the razor head 1, and the elongated pieces 4, 4 are bent and opened. Since the width of the mouth 2 is expanded, the locking projections 7 and 7 reach the recesses on the bottom surface of the razor head 1 by pushing in as much as they are, and the locking projections 7 and 7 return to the original state and become locked. Alternatively, the razor head 1 is fully inserted from the tip into the open port 2 which is widened by pressing the upper and lower protrusions 9 and 12 so as to approach each other. Then, if the pressing of the upper and lower protrusions 9 and 12 is released, the widened opening 2 returns to its original size, and the displaced locking projection 7 also returns upward and the razor head 1 Lock in the bottom recess. When removing the protective cap, the opposite operation may be performed.
[Brief description of the drawings]
FIG. 1 is a side view showing a use state of the present invention. FIG. 2 is a rear view of the present invention. FIG. 3 is a front view of the present invention. FIG. 4 is a side view of the present invention. 6 is a bottom view of the present invention. FIG. 7 is a sectional view taken along line AA in FIG. 3. FIG. 8 is a sectional view taken along line BB in FIG.
DESCRIPTION OF SYMBOLS 1 Razor head, 2 Opening port, 3 Side surface part, 4 Elongate piece, 5 Bottom face part, 6 Flange, 7 Locking protrusion, 8 Upper surface part, 9 Lower protrusion, 10 Groove, 11 Recess, 12 Upper protrusion Groove, 14 triangular flange, 15 holes, 16 support convex

Claims (2)

A protective cap that covers and protects the blade edge of a razor head, and has a substantially rectangular opening for inserting a razor head, and a pair of upper and lower opposed peripheral surfaces forming the opening. Means for expanding the width of at least a part of the opening by means of displacement of at least one of the peripheral surface portions, and the means protrudes beyond the bottom surface portion of the protective cap on the extension of the upper surface portion and the lower surface portion of the protective cap. A locking means for locking the protective cap to the razor head is provided on at least one peripheral surface portion of the pair of peripheral surface portions , and the protective cap is attached by expanding the width of the opening. it is possible to remove the razor head, the lower surface portion of the protective cap does not cover entirely the underside of the protective cap, it lower surface portion which is configured to include a strip extending from the bottom portion Displacement is easier, and the bottom portion is provided with a hole whose lateral length is substantially the same as or longer than the distance from end to end of all of the strips. A protective cap for a razor head, wherein the upper surface of the lower surface portion and the upper surface of the lower projection piece are connected in the same plane. The lower surface portion of the protective cap includes an elongated piece extending from the bottom surface portion and an inward flange extending to the lower end of the bottom surface portion, and the flange extending to the bottom surface portion does not exist between the pair of elongated pieces. The protective cap according to claim 1.

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