JP2529003Y2 - Mounting mechanism of tail crown to shaft - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates, is shall relates to a improvements in tail cap attachment mechanism relative to the axis of the brush Symbol tool such as a mechanical pencil and ball <br/> Rupen.

[0002]

2. Description of the Related Art Conventionally , as this kind of mounting mechanism,
As shown in FIG. 3, a female screw 1 is provided on the inner peripheral surface of the end of the cylindrical shaft 12.
3 and the circumference of the stalk protruding from the tail crown 14
A male screw 15 is engraved on the surface, and the stem of the tail crown 14 is
Insert 2 This occupy combined threadably Mesune di 13 male screw 15
So that the tail crown 14 is attached to the cylindrical shaft 12.
Is known.

[0003] Also, as shown in FIG.
An adhesive is applied to the peripheral surface of the protruding stalk 19, and the adhesive is
The applied stem portion 19 is placed in the hollow portion 17 of the cylindrical shaft 16.
By pressing it on the tail crown 18
There is also known one that is attached to and fixed to.

[0004]

[Problems to be solved by the invention] However, FIG.
Was in the conventional example, the tail crown 1 on the female thread 13 parts of the shaft 12
4 of the tail cap 14 by allowed to screwing the male screw portion 15
Since it is attached to the shaft 12,
Is time consuming and costly.
Was. In addition, it takes time and effort to form screws.
The shape of Ji has a strong feeling.

[0005] Further, in the conventional example shown in Figure 4, the shaft
Before attaching and fixing the tail crown 18 to the
An adhesive must be applied to the peripheral surface of the stem 19.
Therefore, the installation work was troublesome. In addition, the adhesive
The tail crown 18 is fixed to the axis 16 without partially protruding
In order to be able to fix the
It has to be applied thinly and uniformly on the peripheral surface of the stem 19,
The coating operation requires advanced technology. Also, assembly
As shown in FIG.
A part 20 of the adhesive adheres to the outer periphery of the joint between the base 6 and the tail crown 18.
If you do so, be careful not to impair your aesthetics.
The adhesive 20 that has been exposed to the
There is also a disadvantage that it takes a considerable amount of time to remove
You. Further, after applying the adhesive, the stem 19 of the tail crown 18 is
9 because it is press-fitted into the hollow portion 17.
In this case, there is also a disadvantage that the shaft 16 and the like are deformed.

The present invention has been made in view of the above-mentioned disadvantages of the prior art.
It was completed in order to solve it,
While allowing easy and firmly attached only <br/> Rukoto with one touch operation with respect to the cylindrical axis, around the tail crown against the cylindrical shaft
It was to be able to stop, taken of the tail cap with respect to the axis
It is intended to provide a mounting mechanism .

[0007]

Means for Solving the Problems The present invention according to claim 1
Attachment mechanism of the clip with tail cap relative to the axis of the can barrel
A groove formed in the peripheral wall of the shaft in a notch from the shaft end;
And a locking projection provided on a tail crown provided with
Part is fitted to the cylindrical shaft, and the locking projection is formed in the groove.
By engaging the tail crown with respect to the cylindrical shaft.
It is configured to be able to stop .

[0008] According to the second aspect of the present invention, the shaft
The mounting mechanism for the tail crown is to attach the locking projection to the
It is constituted by arranging it in a place.

[0009] For the shaft according to the present invention according to claim 3
The mounting mechanism of the tail crown, the locking projection is located behind the clip
That are configured by placing them on
It is.

[0010] The shaft according to the present invention according to claim 4 is provided.
The mounting mechanism for the tail crown is designed so that the groove is
It is formed in the shape of a substantially arrowhead extending to the appropriate location and the locking projection
The locking projection is also formed in the groove by forming
When it is engaged with the substantially barbed projection, the stepped portion has a substantially barbed groove.
It is configured to be locked to the stepped portion.

[0011]

According to the present invention as set forth in claim 1 and claim 2,
In the mechanism for attaching the tail crown to the shaft, the stalk of the tail crown
Is fitted to the cylindrical shaft and the locking projection provided on the tail crown is cylindrical.
Just by engaging the shaft with the groove provided on the shaft, the tail crown can be
Easy installation with one touch with simple structure
Not only can the tail crown be stopped against the cylindrical shaft
Place the clip attached to the tail crown in place.
Can be

[0012] According to the present invention as set forth in claim 3, for the shaft
In the mounting mechanism of the tail crown, the locking projection is
It is located on the peripheral part of the stalk of the tail crown so that it is located behind
The tail crown is attached to the cylindrical shaft.
The engagement between the locking projection and the groove of the cylindrical shaft is
Therefore, a projection is provided on the stem of the tail crown.
And even if a groove is provided on the cylindrical shaft, the appearance may be impaired.
Absent.

[0013] According to the invention of claim 4, with respect to the shaft
In the mounting mechanism of the tail crown, the groove is extended from the shaft end of the cylindrical shaft.
It is formed in the shape of an arrowhead extending to an appropriate place in the hand direction and
The locking projection is also formed in a substantially arrowhead shape, allowing
When the lock-shaped protrusion is engaged with the substantially arrow-shaped groove,
The step of the projection is locked to the step of the substantially barbed groove
, The tail crown is securely supported by the cylindrical shaft
To prevent the tail crown from falling off the cylindrical shaft.
Will be able to stop.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
The operation will be described with reference to FIG. Axis 2 is horizontal
Cylindrical having a hollow part 1 with a circular or elliptical cross section
On the peripheral wall of the cylindrical shaft 2, the cylindrical shaft 2 extends from the shaft end 3.
A notch-formed groove 4 is provided along the longitudinal direction.
To

[0015] This groove 4 is substantially formed as shown in FIG.
It is formed in the shape of an arrow, and extends from the shaft end 3 of the cylindrical shaft 2.
The first groove gradually narrows as it extends along the direction
Part 4a, continuous from the first groove part 4a via the step part 4b
It has a wide second groove 4c.

[0016] Tail cap 10 attached to end of cylindrical shaft 2
FIG. 2 shows a stalk 9 vertically projecting from the tail crown 10.
Slightly protruding from the tail crown 10 as shown in
And a clip 21 extending in a substantially vertical direction from
You.

[0017] Where appropriate on the tail crown 10 with clip 21
Is provided with a locking projection 8 formed in a substantially arrowhead shape.
I have. In the embodiment shown in FIG.
Is arranged on the peripheral surface of the stalk 9 behind the clip 21,
It extends perpendicularly from the end face 11 of the tail crown 10.

[0018] The stalk 9 of the tail crown 10 is replaced with the hollow 1 of the cylindrical shaft 2.
And the locking projection 8 of the tail crown 10
Is fitted into the groove 4 of the cylindrical shaft 2 so that the tail crown 10 becomes cylindrical.
It is attached to the shaft 2.

[0019] More specifically, the stalk 9 of the tail crown 10 is
The locking projection 8 of the tail crown 10 is inserted into the cylindrical shaft 2 while being inserted into the cylindrical shaft 2.
Of the locking projection 8 in the shape of an arrowhead when pushed into the groove 4
The portion 7 widens both tapered sides of the first groove portion 4a of the groove 4.
While entering the second groove 4c, the step 8a of the locking projection 8 is
The step 4b of the groove 4 is engaged with the step 4b.
Crown 10 can be securely attached without dropping off shaft 2
Become like

[0020] The tail crown 10 is pushed into the cylindrical shaft 2.
The end face 11 of the tail crown 10 abuts on the shaft end 3 of the cylindrical shaft 2
Sometimes, the step 8a of the locking projection 8 is exactly the step 4c of the groove 4.
It is designed in advance to be locked to.

[0021] As described above, the tail crown 10 is
In the mounted state, the locking projection 8 of the tail crown 10
Is fitted into a groove 4 formed in the peripheral wall of the cylindrical shaft 2.
The step 8a of the locking projection 8 is locked to the step 4b of the groove 4.
Of the tail crown 10 with respect to the cylindrical shaft 2 in the axial direction.
And movement around the axis is prevented.

[0022] In the embodiment shown, the locking projection 8 is a clip.
It is provided at the peripheral part of the stalk behind 21.
With this configuration, the state in which the tail crown 10 is attached to the shaft 2
, The engagement portion between the locking projection 8 and the groove 4 is
As it becomes hidden by 1, the aesthetics of the writing instrument is impaired.
I won't sleep.

[0023]

[Effect of the Invention] As described above, the shaft for the present invention is
According to the mounting mechanism of the tail crown, the stem of the tail crown is placed in the cylindrical shaft.
The locking projection of the tail crown is provided on the peripheral wall of the cylindrical shaft while being inserted.
Easy and secure with one touch by fitting into the groove
And the tail crown can be attached to the cylindrical shaft.
Can prevent the tail crown from rotating around the cylindrical axis
With the clip attached to the tail crown in place.
Will be able to

[Brief description of the drawings]

FIG. 1 shows the mounting of a tail crown to a shaft according to an embodiment of the present invention.
FIG. 4 is a partially cutaway front view of a writing instrument to which a printing mechanism is applied .

2 is a side cross-sectional view of the writing instrument from A arrow direction in FIG.

FIG. 3 shows a conventional attachment mechanism of a tail crown with respect to a writing instrument shaft .
Description is a partial side cross sectional view for.

FIG. 4 shows another conventional attachment of the tail crown to the writing instrument shaft .
It is a partial side cross sectional view for explaining the structure.

[Explanation of symbols]

End surface 21 the clip 1 hollow biaxial 3 shaft end 4 grooves 4a first channel section 4b stepped portion 4c the second channel section 8 engaging Tome突 electromotive 9 tail cap stalk 10 of the tail cap 11 tail cap

Claims (4)

(57) [Scope of request for utility model registration] 1. Mounting of a tail crown with a clip on a cylindrical shaft
A notch from a shaft end in a peripheral wall portion of the cylindrical shaft.
A groove formed and a stem-shaped portion fitted to the cylindrical shaft are provided.
And a locking projection provided on the tail crown.
Is fitted to the cylindrical shaft and the locking projection is
Engagement rotates the tail crown with respect to the cylindrical shaft.
Characterized in that to be able to stop Ri, attachment of <br/> tail cap relative to the axis mechanism. 2. The method according to claim 1, wherein the locking projection is formed on an outer peripheral surface of the stalk.
2. The apparatus according to claim 1, wherein
Attaching mechanism of tail crown to mounted shaft. 3. The locking projection is located behind the clip.
It is characterized by being located at the peripheral part of the stalk that is located
The mechanism for attaching the tail crown to the shaft according to claim 1. 4. The longitudinal direction from the axial end of the cylindrical shaft to the groove.
It is formed in a substantially barbed shape extending to an appropriate location, and
The stop projection is also formed substantially in the shape of an arrow so that the locking projection is formed.
When the protrusion is engaged with the groove, the step of the barbed projection is
It is characterized in that it is locked to the step of the barbed groove.
The method according to any one of claims 1 to 3, wherein
Mounting mechanism of tail crown to shaft.