JP2543033Y2 - Cap mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap mounting structure, and more particularly, to a cylindrical portion which is used for an electric razor or the like and is formed of a synthetic resin and has a cylindrical shape, and one of the cylindrical portions. The present invention relates to a cap mounting structure in which a cap including a covering portion for closing an end face is externally fitted to a projecting portion projecting from a main body.

[0002]

2. Description of the Related Art Conventionally, a cap, which is used for an electric razor or the like and is made of a synthetic resin and has a cylindrical portion formed in a cylindrical shape, and a covering portion for closing one end face of the cylindrical portion, is attached to a main body. FIG. 11 shows an example of a cap attachment structure that is fitted to a projecting portion projecting from the outside. The cap 100 is formed of a synthetic resin, and includes a tubular portion 102 formed in a tubular shape, and a covering portion 104 for closing an upper end surface of the tubular portion 102. A plurality of slits 106 extending upward from the lower end surface are formed in the cylindrical portion 102. By forming the slit 106, when the cap 100 is externally fitted to a projecting portion (not shown) projecting from the electric razor main body, for example, like a shaving portion of an electric razor, the slit of the cylindrical portion 102 is formed. The vicinity of 106 is elastically deformed, and the cap 100 is fitted to the projecting portion. The elastic force prevents the cap 100 from being pulled out of the projecting portion. In particular, when the convex portion 108 is provided on the inner wall surface of the portion of the cylindrical portion 102 which is easily elastically deformed, the cap 1 is provided with a stronger elastic force.
00 can be fitted.

In addition, instead of providing the slit 106 in the cylindrical portion 102, a plurality of tongues 110 are vertically provided from the lower end of the cylindrical portion 102 as shown in FIG. Those provided are also used. In the example of FIG. 12, when the cap 100 is externally fitted to a projecting portion (not shown) projecting from the electric razor body, such as a shaving portion of the electric razor, the tongue piece 1 of the cylindrical portion 102 is used.
10 is elastically deformed, and the cap 100 is fitted to the projecting portion. The elastic force prevents the cap 100 from being pulled out of the projecting portion. In particular, when the protrusion 108 is provided, the cap 100 can be fitted with a stronger elastic force.

[0004]

However, the above-mentioned conventional cap mounting structure has the following problems. In the examples shown in FIGS. 11 and 12, since the cap is held only by the elastic force generated by the elastic deformation of the cap, stress always acts on the tubular portion or the tongue when the cap is attached. As a result, there is a problem that fatigue of the cylindrical portion or the tongue piece is remarkable and the portion concerned is damaged early. If the elastic force is reduced, the stress can be reduced, and the fatigue of the tubular portion or the tongue piece can be reduced. However, there is a problem that the fitting force of the cap is reduced and the cap is easily detached from the protruding portion. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cap mounting structure in which stress acting on the cap is small and sufficient holding force of the cap can be obtained.

[0005]

In order to solve the above problems, the present invention has the following arrangement. That is, in a cap mounting structure in which a bottomed cylindrical cap formed of a synthetic resin is externally fitted to a projecting portion projecting from the main body, the cap is formed on the cylindrical portion of the cap, and on the end surface of the cylindrical portion. Providing a plurality of slits to be opened, providing concave portions located on both sides sandwiching each slit on the inner wall surface of the cylindrical portion, and positioning the outer wall surface of the projecting portion on the main body side corresponding to each slit of the cap. In addition, it is wider than each slit and can fit in the concave
When the cap is attached to and detached from the projecting portion, the projecting portion is formed by the opening end of the slit or the concave portion.
From the position where it fits into the slit,
Pressing both side edges from inside, wall of cylindrical part on both sides of slit
To the outside while slightly deforming it elastically.
And the cap is guided by the slit for one touch
And is detachable from the projecting portion on the main body side .

Further, the main body may be an electric razor, and the cap may cover an outer blade of the electric razor.

[0007]

[Operation] The operation will be described. According to the above configuration, when the cap is attached to or detached from the projecting portion on the main body side, the projecting portion on the projecting portion side, which is wider than the slit, is opened at the opening end of the slit.
Or, enter the slit from the position where it fits into the recess
Then, press both side edges of the slit from inside to
Move while slightly elastically deforming the outer wall of the cylindrical part on the outside
The cap is guided by the slit.
It is attached to and detached from the projecting portion on the main body side with one touch. Therefore, when attaching or detaching the cap to or from the protruding portion, press both side edges of each slit from inside and press
Although the wall surface is moved while slightly elastically deforming outward , strong stress is not locally applied to the wall surface of the tubular portion, and the amount of deformation of each slit is small. Further, once the cap and the projecting portion are fitted into the projections and recesses, the state of attachment of the cap to the projecting portion is maintained and the stress acting on the cap can be eliminated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In this embodiment, a cap mounting structure for covering a shaving portion of an electric razor will be described as an example.

A first embodiment will be described with reference to FIGS. First, the configuration of the cap 10 will be described with reference to FIGS. Reference numeral 12 denotes a cylindrical portion, which is formed in a cylindrical shape. The inner diameter of the cylindrical portion 12 is formed to be substantially the same as the outer diameter of the shaving portion 16 (see FIG. 4) of the electric razor body 14. Reference numeral 18 denotes a covering portion, which is formed in a hemispherical shape that is raised upward, and is provided so as to close the upper end surface of the tubular portion 12. The covering portion 18 and the tubular portion 12 are integrally formed of a synthetic resin, and are formed into a bottomed tubular shape as a whole. Reference numeral 20 denotes a slit which is formed so as to extend upward from the lower end surface of the cylindrical portion 12.
Is divided into a plurality of wall portions in the circumferential direction. In the present embodiment, three cylindrical portions are provided at equal intervals in the circumferential direction.
2 is divided into three wall portions. 22 is a concave portion,
On the inner wall surface of the cylindrical portion 12, portions are provided in the circumferential direction on both sides sandwiching each slit 20. The slit 20 and the concave portion 22 are also formed when the cap 10 is molded with resin.

Next, the electric razor body will be described with reference to FIG. The shaving portion 16, which is a protruding portion, is protruded from the electric razor body 14 in a cylindrical shape. The outer wall surface of the shaving portion 16 is wider than the slit 20 at a position corresponding to the concave portion 22 of the cap 10,
The slit 20 and a convex portion 26 that can be fitted into the concave portion 22 on both sides thereof are provided.

The cap 10 can be fitted with the shaving portion 16 outside. When the cap 10 is fitted with the cap 10, the projection 26 of the shaving portion 16 and the cap 10 can be fitted.
(FIG. 4), and the cap 10 is pressed against the shaving portion 16. Then, as the convex portion 26 enters each slit 20 of the cylindrical portion 12, the side wall edge is pushed to deform the cylindrical portion wall surface so that each slit 20 is pushed open. There is no local stress on the wall of the cylindrical part,
In addition, the amount of deformation of the wall surface of the cylindrical portion divided wide in the circumferential direction by each slit 20 can be small. Also, cap 1
Once the concave portion 22 of the cap 10 and the convex portion 26 of the shaving portion 16 are fitted together (the state of FIG. 5), the external fitting state of the cap 10 to the shaving portion 16 is maintained and the slit 2
The stress acting on the wall surface of the cylindrical portion due to the entry of the convex portion 26 wider than 0 is also eliminated. Therefore, even if the cap 10 is repeatedly attached to and detached from the shaving portion 16, the elasticity of the tubular portion is sufficiently ensured, the accumulation of fatigue in the cap 10 can be reduced as much as possible, and the life of the cap 10 can be extended.

In the above embodiment, the recess 22 is formed as a groove with a bottom in the middle of the length of the slit 20. However, as shown in FIG. 6, the recess 22 may be formed in a through hole. . Further, the concave portion 22 may be formed at the upper end of the slit 20 so as to form a T-shape. Further, as shown in FIG. 7, the slit 20 may not be formed in a straight line but in a curved line. Even in the case of the curved slit 20, the concave portion 22 may be formed as a groove with a bottom in the middle of the length of the slit 20, as shown in FIG. 7, or the concave portion 22 may be formed in a through hole. You may. Further, it is the same that the concave portion 22 may be formed at the upper end of the slit 20 so as to form a T-shape.

Next, a second embodiment will be described with reference to FIGS.
It is explained together with. The same members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted. The second embodiment is the same as the first embodiment except that the relationship between the concave portions and the convex portions is reversed. As shown in FIGS. 8 and 9, a convex portion 50 is provided on the inner wall surface of the cylindrical portion 12 of the cap 10 in a direction crossing each slit 20. Also shown in FIG.
As described above, the outer wall surface of the shaving portion 16 of the electric razor body 14
A recess 52 into which 0 can be fitted is provided.

When the cap 10 is fitted to the shaving portion 16 by external fitting, the slit 20 of the cap 10 and the concave portion 52 of the shaving portion 16 are made to correspond to each other, and the cap 10 is pressed toward the shaving portion 16. Then
Due to the contact between the convex portion 50 and the outer wall surface of the shaving portion 16,
The vicinity of the slit 20 of the cylindrical portion 12 is elastically deformed, and the protrusion 50
Fits into the recess 52 (the state of FIG. 10). When it is inserted,
Since the pressing movement due to the contact between the convex portion 50 and the outer wall surface of the shaving portion 16 is released, the elastic deformation is restored, and the stress acting on the cylindrical portion 12 is eliminated.

Also in the second embodiment, the slit 20 may be formed in a curved shape, and the convex portion 50 may be formed in a groove shape with a bottom in the middle of the length of the slit 20 as shown in FIG. Alternatively, the protrusion 50 may be formed at the upper end of the slit 20 so as to form a T-shape, as in the first embodiment.
The same is true . Also, the concave portion 52 may be a groove having a bottom, or may be provided as a through hole in the shaving portion 16. that's all,
Although various preferred embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments. Of course, many more modifications can be made without departing from the spirit of the present invention.

[0016]

When the cap mounting structure according to the present invention is used, when the cap is attached to and detached from the projecting portion , the projecting portion on the projecting portion side is fitted to the opening end or the concave portion of the slit.
Into the slit from the position
And slightly press the outer wall of the cylindrical part on both sides of the slit.
The cap is moved while being elastically deformed.
Is guided by the slit and the one-touch
It is attached to and detached from the projecting portion. Therefore, the cap should be
When attaching / detaching, press both edges of each slit from inside
And slightly elastically deform the wall of the cylindrical part on both sides of the slit outward.
Move it while shaping it, but locally on the cylindrical wall
No strong stress is applied, and the amount of deformation of each slit is small. Further, once the cap and the projecting portion are fitted into the projections and recesses, the state of attachment of the cap to the projecting portion is maintained and the stress acting on the cap can be eliminated. Therefore, even if the cap is repeatedly attached to and detached from the main body, the elastic strength of the cylindrical portion is sufficiently ensured, accumulation of fatigue in the cap can be reduced as much as possible, and the life of the cap can be prolonged.

[Brief description of the drawings]

FIG. 1 is a front view of a cap of a first embodiment of a cap mounting structure according to the present invention.

FIG. 2 is a bottom view of the cap according to the first embodiment.

FIG. 3 is a partial cross-sectional view of the cap according to the first embodiment.

FIG. 4 is a perspective view showing a state in which the cap of the first embodiment is externally fitted to the electric razor body.

FIG. 5 is a partial cross-sectional view showing a state where the cap of the first embodiment is externally fitted to the electric razor body.

FIG. 6 is a partial view showing another slit and a concave portion.

FIG. 7 is a partial view showing another slit and a concave portion.

FIG. 8 is a partial view showing a slit and a protrusion of the second embodiment.

FIG. 9 is a partial sectional view of a cap according to a second embodiment.

FIG. 10 is a partial cross-sectional view showing a state where the cap of the second embodiment is externally fitted to the electric razor body.

FIG. 11 is a front view of a conventional cap.

FIG. 12 is a front view of another conventional cap.

[Description of Signs] 10 Cap 12 Cylindrical part 14 Electric razor main body 16 Shaving part 18 Covering part 20 Slit 22 Concave part 26 Convex part 50 Convex part 52 Convex part

Claims (2)

(57) [Scope of request for utility model registration] 1. A cap mounting structure for mounting a bottomed cylindrical cap formed of a synthetic resin on a projecting portion projecting from a main body, wherein the cylindrical portion of the cap is attached to the cylindrical portion. A plurality of slits are provided on the end face of the cap, concave portions are provided on the inner wall surface of the cylindrical portion on both sides of the slit, and the slits of the cap on the outer wall surface of the projecting portion on the main body side are provided. In the corresponding position, wider than each slit,
Providing a convex portion that can be fitted into the concave portion, when attaching and detaching the cap to and from the projecting portion, the convex portion
Position to fit in the opening end of the slit or the concave portion
Into the slit from both sides of the slit
And slightly press the outer wall of the cylindrical part on both sides of the slit outward.
The cap is moved by being elastically deformed.
Is guided by the slit and one-touch
A cap mounting structure that can be attached to and detached from an installation part. 2. The cap mounting structure according to claim 1, wherein the main body is an electric razor, and the cap covers an outer blade of the electric razor.