JPS586640B2 - Yokohou Kounikadouna Kuritsupuoyuusuruhitsukigu - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a writing instrument, and more particularly to a writing instrument in which the writing tip, such as the ball of a ballpoint pen or the nib of a felt pen, is retracted into the body of the writing instrument when not in use, and is extended and protruded from the body when in use. The present invention relates to a writing instrument of the type which is shaped like a pocket and is provided with a clip for retaining the writing instrument in a pocket, and the present invention aims at improving such a writing instrument.

In conventional writing instruments of this type, a compression spring is provided for a writing cartridge having a writing tip.

The compression spring presses and holds the card cartridge in the retracted position.

The present invention seeks to use the spring action of this compression spring not only to retract the cartridge, but also to apply that spring action to the clip that holds the writing instrument in the pocket.

This dual function of the compression spring for the cartridge eliminates the need for a separate biasing spring for the clip.

According to the invention, therefore, a sleeve is fitted to the top end of the cartridge for interaction with the clip.

Conventional standard cartridges can be used as the card cartridge.

The sleeve not only serves to hold the cartridge in place, but also to lock the clip to the cap portion of the writing instrument, and also to lock the ends of the clip outward when the writing tip is in the retracted position. Work to push.

The sleeve transmits the spring force of the cartridge compression spring to the pocket retaining clip, biasing the clip so that it firmly grips the fabric of the user's pocket.

The present invention will be explained in more detail below with reference to embodiments shown in the drawings.

Referring to Figures 1 and 2, pen 10 has a body 11 which is open at one end at the reference numeral 13 through which a writing tip 22 can extend out of body 11 .

Pen 10 further includes a cartridge 20 having the writing tip 22 formed at one end thereof.

A sleeve 30 is placed over the end of the cartridge 20 opposite to the writing tip (hereinafter referred to as the upper end).

The pen 10 is further provided with a clip 40 which acts on the sleeve 30 to extend the writing tip 22.

A compression spring 24 is attached to the lower part of the main body 11, and this compression spring 24 normally presses the cartridge 20 upward, so that the writing tip 2
2 is normally retracted inside the body 11 of the pen.

The body 11 of the pen has a lower part 15, usually called the barrel, and an upper part 12, usually called the cap, with a screw thread 1.
4 and 15 can be assembled together by connecting them to each other.

The structure of the sleeve 30 is L2, 3. This is shown in Figure 4.

That is, the lower end of the sleeve has the cartridge 20
A blind hole 26 is bored for accommodating the upper end of the
The blind hole 26 is rounded at the reference numeral 27.

The cartridge 20 is loosely fitted into the blind hole 26 so that the cartridge is ventilated.

The upper end of the sleeve 30 is vertically flattened to form an upwardly extending shank 34 which, as seen in FIG. 3, has a top horizontal flange 36 and side vertical flanges. It has 38.

Side vertical flanges 38 are notched at midpoint 54 .

The flat top surface of the shank intersects a vertical surface on which a side vertical flange 38 is provided to form a support edge 39.

The support edge 39 abuts against and supports a cam surface of a clip, which will be described later.

The lower part of the sleeve 30 is provided with a recess 62 which receives the ball 66 of the clip 40.

The recess 62 is preferably chamfered at its lower end at the reference numeral 63 to facilitate the exit of the clip ball 66 from the recess 62 as shown in FIG.

The structure of the clip 40 is shown in FIGS. 1.2.4 and 5.

The upper end 64 of the clip 40 is commonly referred to as the attachment end for attaching the clip to the body of a pen.

An arm 65 extends downward from the mounting end and terminates in a ball 66.

The ball 66 grips materials such as cloth or barges in a clothes pocket, for example, in which the pen is carried.

The upper end of the clip 40 has two parallel side walls 46 and 4.
8 (see Figure 4) protrudes into the body of the pen.

The side walls terminate in inwardly bent hooks 50,52 which engage the inside of the side vertical flanges 38 of the sleeve 30 described above.

The hook is connected to a notch 54 provided in the side vertical flange.
It is inserted through the notch and does not come out through the notch during normal operation.

The parallel side walls 46 and 48 run along opposite sides of the sleeve shank 34, respectively.

A diagonal member 42 is provided on the clip between the side walls 46 and 48 and is inclined at an angle relative to the general longitudinal axis of the pen 10.

This diagonal member 42 is connected to the supporting edge 39 of the shank described above.
and provides a camming effect when the attachment end 64 of the clip is pushed inwardly, ie, to the left in FIGS. 1 and 2.

The diagonal member 42 terminates in a generally horizontal distal end 44 which retains the writing tip in its extended position as shown in FIG.

Next, when looking at cap 12, this cap is attached to clip 4.
It has a receptacle aperture 58 for receiving a mounting end 64 of the screw.

The mounting end 64 is pressed against the upper edge 59 of the opening 58 by the action of the compression spring 24 (see FIG. 1).
.

As best shown in FIG. 2, the support edge 39, hook 52 and upper edge 59 of sleeve 30 create a torque that biases clip 40 clockwise so that the ball of the clip firmly holds the fabric of the pocket. It helps me understand.

During this torque action, outward movement of mounting end 64 is limited by hooks 50 and 52 which engage side vertical flanges 38.

The cap 12 has another opening 60 located opposite the ball 66 of the clip.

This opening cooperates with the recess 62 in the sleeve described above to allow the ball 6 to open when the writing tip is in the extended position shown in FIG.
6 into the recess.

However, when the writing tip is retracted as in FIG. 2, the unindented portion of the sleeve 30 faces the opening 60 and the ball 66 is forced outwardly, ie, to the right as viewed in the drawing.

This allows the ball 66 to easily rest on the fabric of the pocket in which the pen is housed, thereby retaining the pen in the pocket.

As best shown in FIGS. 2 and 6, the cap 12 has a wall immediately below the opening 60 that is located in the key slot.
6, into which a projection or key 57 provided on the sleeve 30 is fitted.

Although this key-to-key slot connection is not essential, it is helpful in assembling the pen.

Next, a description will be given of how to operate the writing instrument illustrated in FIGS. 1 to 6.

Assume that clip 40 is initially in the retracted position shown in FIG.

In this state, if the user wishes to extend the writing tip 22 for writing, the user manually pushes the attachment end 64 of the clip inward.

This forces the diagonal member 42 against the support edge 39, and the cam action at this time forces the sleeve 30 downward.

The downward movement of sleeve 30 extends cartridge 20 to the extended position shown in FIG.

When the bottom of the diagonal member 42, which acts as a camming surface, reaches the top surface of the sleeve 30, the horizontal end 44 of the diagonal member rests on and abuts the top surface of the sleeve, so that the writing tip 2
2 is held in the extended position and the pressure of the compression spring 24 maintains the horizontal end 44 and the top surface of the sleeve 30 in abutment.

As is clear from FIG. 1, in this state, the ball 66 of the clip has expanded into the pen body through the recess.

Next time the user attempts to retract the writing tip 22,
The user presses on the ball 66.

This causes the clip to pivot around the upper edge of the cap opening 60, causing the attachment end 64 to move to the right as viewed in the figure.

The pivoting motion of the clip at this time is shown by broken lines in FIG.

Once the horizontal end 44 of the diagonal member of the clip is disengaged from the top surface of the sleeve, the compression spring 24 lifts the sleeve upwardly, causing the clip to move further to the right in the illustration and finally as shown in FIG. Hooks 50 and 52 as shown
and reach a position where they engage side vertical flanges 38 on the top of the sleeve.

As shown in FIG. 2, at this time, the recess 62 of the sleeve
is moved upwardly so that the ball 66 of the clip is forced out of the recess 62 and comes into abutment with the unrecessed sleeve portion.

Ball 66 can therefore be grasped by hand and engaged with the fabric of the pocket.

The variant shown in FIG. 7 corresponds to those shown in FIGS. 1 and 2 in terms of the structure of the pen body and sleeve, but the structure of the clip is slightly different.

The clip is made of plastic and has a mounting end 70 having a pair of spaced side walls 72.

An inwardly protruding projection 74 extends from the lower left corner of the side wall 72, which is the fourth projection in the embodiment.
It has the same function as the hooks 50 and 52 shown in the figure.

The remaining portion of the attachment end 70 is solid and has an inclined surface 76 and a flat portion 78.

A clip arm 80 is coupled to the attachment end, and a ball 82 is formed at the lower end of the clip arm 80.

The method of operating the writing implement of the modified example shown in FIG. 7 is exactly the same as that of the previous embodiment.

In another variant shown in FIG. 8, the body of the pen is preferably made from a drawn metal sheet or a metal material formed into a tubular shape.

Cap 84 has an opening 86 in which a clip attachment end 88 is received.

The clip has a shank 90 with a ball (not shown) at its lower end, which can be fitted into the pen body in the manner shown in FIGS. 1 and 5.

The clip has spaced side walls 92 with a hook 94 formed in the lower left corner of the side walls 92.

A curved support surface member 96 is provided between the side walls 92 .

In this variant of FIG. 8, the oblique slope is formed towards the sleeve.

That is, the sleeve 98 has an upwardly projecting flattened stem 100 which has a horizontal flange 102 at its top, an angled flange 104 at its upper right side, and a vertical flange 106 following the angled flange at its right side.
has.

One or more of these flanges may be drilled or the side wall 92 may be elastically forced outwardly to force the side wall around these flanges as described above with respect to FIGS. 1 and 2. A retaining engagement between the hook and the flange is ensured.

The manner of operation of the writing instrument of FIG. 8 is similar to that of the writing instruments shown in FIGS. 1 and 2, with the difference in structure being that in the example of FIG. 8, the support surface is provided by a curved support surface member 96. The only difference is that a slanted cam surface is provided on the sleeve 98 as a slanted flange 104.

As will be apparent to those skilled in the art, the present invention is susceptible to various embodiments.

For example, an opening in the cap opposite the ball of the clip could be omitted along with a corresponding recess in the sleeve.

Furthermore, the recesses in the illustrated sleeve could be not just recesses but also through holes.

The sleeve itself could also be formed directly on the top end of a non-standard cartridge.

Additionally, the diagonal cam surface could be constructed in a double-acting configuration that also acts to retract the writing tip, thereby eliminating the need for a spring to retract the writing tip.

The writing tip described herein may be a pencil lead tip, a felt tip, a ballpoint nib ball, or any other type of writing tip.

The ball at the stray end of the clip may have a protrusion projecting toward the cap to aid in the aforesaid action when the ball is pressed to retract the writing tip.

Conversely, the cap may be provided with a protrusion that protrudes toward the bay of the clip.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a writing instrument illustrating one embodiment of the invention, with the writing tip (nib) in an extended position and the clip in a retracted position. FIG. 2 shows only the upper part of the writing instrument shown in FIG. 1, but with its writing tip in a retracted position and its clip in a laterally extended position. FIG. 3 is an enlarged perspective view of the upper part of the sleeve of the writing instrument shown in FIGS. 1 and 2. FIG. FIG. 4 is a cross-sectional view taken along line 4--4 of FIG. FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. FIG. 7 is a side view, partially in section, showing a modification of the clip of the writing instrument shown in FIG. 1, and the clip is made of a plastic material. FIG. 8 is a partial side view of a writing instrument, including a partial sectional view, showing a modification in which the main body of the writing instrument is made of metal and a clip having a structure different from that of the clip shown in FIG. 1 is used. . 11... Body, 12, 84... Cap part, 15... Body part, 20... Cartridge, 22... Writing tip, 30, 9
8...Sleeve, 36...Top horizontal flange, 38...Side vertical flange, 40...
... Clip, 42 ... Needle member as cam surface, 46. 4B, 72, 92...
... Side wall, 50, 52, 74, 94 ... Hook, 64, 70, 88 ... Clip attachment end, 104 ... Inclined flange as cam surface.

Claims (1)

[Claims] 1. A writing instrument having a retractable and extendable writing tip, which includes: (a) an elongated hollow body 11 with an opening 13 at one end;
A front opening 60 and a rear opening 58 are provided on the sides of the cap 12.
A hollow body 11 having a (mouth) writing tip 22 is accommodated in the body 11, and the writing tip 22 is inserted into the body 1 for writing.
1 and the extended position protruding from the opening 13 of the writing tip 2.
A writing cartridge 2 that can be reciprocated within the main body between a retracted position where the writing cartridge 2 can be retracted when not in use for writing.
(c) a hook 50,52 for holding a writing instrument in a pocket, the clip 40 being connected to the elongated body 11 for limited movement in a direction transverse to said body 11; a clip 40 having a mounting end 64 with side walls 46, 48 terminating in and a distal end 66 pointing in the direction of the writing tip 22; (b) the writing tip 22 of the cartridge 20 is formed; The hook 50 is attached to the upper end of the opposite side of the
．． 52 and retaining said clip 40, a sleeve 30 forming a shank 34 having side flanges 38, a top flange 36, and a support edge 39, with the writing tip 22 in an extended position. When the opening 60
(e) a member 42 disposed between said side walls 46,48 for movement of said mounting end 64 of said clip 40 into said opening 58 of body 11; This causes the writing tip 22 to extend and the distal end 66 of the clip 40 to be attached to the main body 11.
a member 42 which exerts a camming action between the support edge 39 of the shank 34 and the writing tip to retract the writing tip when moved into the opening 60 of the top flange 3;
(f) a spring 24 which normally urges the writing tip 22 into the retracted position and maintains the contact in which the member 42 is in contact with the cartridge 20 and the clip 40; , and the spring 24 not only acts to retract the cartridge 20, but also the support edge 39, the hooks 50, 52 and the opening 58 to help keep the writing instrument securely within the pocket. upper edge 5
9 generates a torque that presses the distal end 66 of the clip 40 toward the main body 11. 2 Regarding a writing instrument having a retractable and extendable writing tip, (a) an elongated hollow body 11 with an opening 13 at one end;
A front opening 60 and a forest opening 58 are provided on the side of the cap 12.
A hollow body 11 having a (mouth) writing tip 22 is accommodated in the body 11, and the writing tip 22 is inserted into the body 1 for writing.
1 and the extended position protruding from the opening 13 of the writing tip 2.
A writing cartridge 2 that can be reciprocated within the main body between a retracted position where the writing cartridge 2 can be retracted when not in use for writing.
(c) a hook 50,52 for holding a writing instrument in a pocket, the clip 40 being connected to the elongated body 11 for limited movement in a direction transverse to said body 11; a clip 40 having a mounting end 64 with side walls 46, 48 terminating in , and a distal end 66 facing toward the writing tip 22; (d) the writing tip 22 of the cartridge 20 is formed with The hook 50 is attached to the upper end of the opposite side of the
．． 52 to retain said clip 40, a sleeve 30 forming a shank 34 having a side flange 38, a top flange 36, and a support edge 39, with the writing tip 22 in an extended position. When the opening 60
and the flange 38 has a notch 54 that allows the hooks 50, 52 to enter, and the notch 54 allows the writing tip 22 to be extended and retracted. (e) a member 42 provided between the side walls 46 and 48, which is a mounting end 64 of the clip 40; movement of the clip 40 into the opening 58 of the body 11 extends the writing tip 22 and moves the distal end 66 of the clip 40 into the body 11.
a member 42 which exerts a camming action between the support edge 39 of the shank 34 and the writing tip to retract the writing tip when moved into the opening 60 of the top flange 3;
(f) a spring 24 which normally urges the writing tip 22 into the retracted position and maintains the contact in which said member 42 is in contact with the cartridge 20 and the clip 40; , the spring 24 not only acts to retract the cartridge 20, but also the support edge 39, the hook 50, 52 and the aperture 58 which help the writing instrument to be held securely within the pocket. upper edge 5
9 generates a torque that presses the distal end 66 of the clip 40 toward the main body 11.