JP2000326688A - Push-out type writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the preciseness of the action of a rotary positioning mechanism of an operation unit and to improve the degree of freedom of design of the layout of the operation unit. SOLUTION: In the push-out type writing instrument wherein a writing body, which is urged in the storage direction by a main urging means retractably stored in a main body 2, is positioned at a projecting point and a storing point by a rotary type positioning mechanism which comprises a fixed cam 20, a sliding cam 7, and a rotary can 8 stored in a main body 2 so as to be opposed to the cams 20, 7 and acts in association with an operation unit 4, the rear end of a connection axis 62 passed through the cam 8 is connected to the cam 7 so as to be pushed out, and the cams 7, 8 are held by the axis 62 so as to be moved away from each other in the axial direction, while an auxiliary urging means is provided to urge the cams 7, 8 in a contact direction, and the unit 4 is connected to the forward end of the axis 62 in an operation force transmitting state and the rotary type positioning mechanism is provided in the rear area of the writing body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extruding writing instrument, and more particularly, to a writing position in which a writing portion at the tip of a writing body is protruded to a writable position by a hand operation while holding the writing instrument in a writing posture. The present invention relates to an extrusion-type writing instrument which can be operated to a storage position stored in a cylindrical main body.

[0002]

2. Description of the Related Art A writing instrument disclosed in Japanese Utility Model Publication No. 7-19835 has been known as an extruding writing instrument of this type, which is attached to a retreating direction by a first spring in order to secure the above-mentioned operation. An operating portion connected to the energized ball-point pen refill is exposed on the front end (tip) side of the tubular main body of the writing instrument, and the operating portion is slidably provided along the main body. A cylindrical fixed cam provided at a rear portion of the main body, a rotary cam rotating within the main body and facing the fixed cam, and the rotary cam similarly slidably fitted to the fixed cam. A rotary positioning mechanism consisting of a sliding cam that is paired with the rotary cam, and a biasing force weaker than the first spring interposed between the rear end of the main body and the sliding cam of the rotary positioning mechanism. And a second spring.

[0003] In this apparatus, the writing body is pushed out by the action of the rotary positioning mechanism accompanying the sliding operation of pushing out the operating portion on the side of the main body toward the distal end, and the projecting position at which the writing portion protrudes from the main body; Thereafter, by performing the slide operation again, the writing unit is positioned at the storage position stored in the main body. As described above, there is an advantage that the writing body can be moved forward and backward (forward and backward) by the pushing operation of the operation unit provided on the side part of the main body.

However, the operation of the rotary positioning mechanism cannot be said to be reliable in this conventional device. When the refill is pushed out against the first spring, the sliding cam needs to move forward following this operation, but this operating force is applied only by the urging force of the second spring. The conventional rear-end knock type that forcibly pushes the sliding cam (a known type having a configuration in which a knock operating portion protruding from the rear end of the main body advances and retracts integrally with the sliding cam) This is because the operation of the sliding cam cannot be reliably performed. This is described in DE-A 37 05 097 A
The same can be said for the writing implement disclosed in No. 1.

On the other hand, in Japanese Utility Model Publication No. 6-32394, similarly, the refill can be moved forward and backward by an extrusion-type (slide-type) operation section provided on the side of the main body. In this configuration, a cam bar corresponding to the sliding cam has a cylindrical configuration that is externally fitted and fixed to the refill, and a sliding-type operation unit is provided on the body thereof. Equivalent to the operation of the corresponding cam bar directly, the same reliable operating performance as the conventional rear end knock type can be obtained.

However, in this prior art, both the sliding cam and the rotary cam need to be fitted to the refill on the front side of the connecting portion between the operating portion provided on the side of the main body and the cam bar. In addition, since it is necessary to form a fixed cam formed on the inner surface of the main body on the outer periphery of the main body, the disposition position of the operating portion in the hand-operated so-called extrusion type writing instrument is determined by the base at the front end of the main body. Therefore, there is a problem in that the writing implement in the case where the operating section is provided on the side of the main body lacks design flexibility.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made in consideration of the following problem. A fixed cam (20) provided on the inner surface of a cylindrical main body (2), and the fixed cam (20) A sliding cam (7) slidably held in the main body, and a rotating cam (8) housed in the main body so as to mate with the sliding cam (7) and the fixed cam (20). Built-in rotary positioning mechanism,
By pushing out the operating portion (4) exposed on the side of the main body (2) in the axial direction, it is housed in the main body (2) by the rotary positioning mechanism so as to be freely protruded and retracted by the main biasing means. An extrusion-type writing instrument for positioning the writing body urged in the storage direction to a position where the writing portion (91) protrudes from the main body and a storage position where the writing portion is stored in the main body (2) ''. To ensure the reliability of the operation of the rotary positioning mechanism by operation, and to increase the degree of freedom in designing the arrangement position of the operation section when the operation section is provided on the side of the main body having the rotary positioning mechanism. As an issue. [1]

[0008]

In order to solve the above-mentioned problems, the technical means of the present invention is as follows: "A connecting shaft which is penetrated by a rotary cam (8) of the rotary positioning mechanism so as to be a pair of cylinders. (62), the rear end of the connecting shaft (62) is extrudably connected to the sliding cam (7), and the sliding cam (7) and the rotating cam (8) are arranged in the axial direction. Auxiliary biasing means, which is releasably held by the connecting shaft (62) and biases the sliding cam (7) and the rotating cam (8) in the contact direction, is provided. The front end of the connection shaft (62) is connected to the operating force transmission state, and the rotary positioning mechanism is
(2) in the rear area of the cursive script.

In this technical means, the urging means is an elastic body such as a spring or rubber, a magnet, or the like.
(7) and various means for biasing the rotating cam (8) in the contact direction. Further, "penetrating the rotary cam (8) so as to mate with the cylindrical pair" means that the connecting shaft (62) penetrates so that the rotary cam (8) is rotatable and slidable. is there.

The structure in which the rear end of the connecting shaft (62) is extrudably connected to the sliding cam (7) means that the connecting shaft (62) is directly connected to the sliding cam (7), It refers to a configuration in which the pushing force of the connecting shaft (62) directly acts on the sliding cam (7) via a stopper or a configuration indirectly acting via an auxiliary spring or the like.

The above technical means operates as follows. The operating section (4) is engaged with the body on the distal end side of the writing body urged in the storage direction by the main urging means in the pushing direction, so that the operating section (4) is The operating force is transmitted from the body of the cursive body to the connecting shaft (62). And the rotating cam
An operating force is transmitted to the sliding cam (7) from the connecting shaft (62) penetrating through (8). When the operating member (4) is operated in the pushing direction while the writing body is in the storage position, the writing body is pushed out to the projecting position, and at the same time, the sliding cam (7) is connected to the connecting shaft (6).
2), the cursive body is held at the projecting position even when the operating force of the operating section (4) is released due to the relationship between the rotating cam (8) and the fixed cam (20). You. The sliding cam (7) and the rotating cam (8) are constantly urged by the auxiliary urging means in a direction in which the sliding cam (7) and the rotating cam (8) come into contact with each other.
2), the sliding cam (7) and the rotating cam (8) move away from each other by an interval corresponding to the cam mechanism of the rotary positioning mechanism. The cam (8) rotates to a position corresponding to the projecting position, and the sliding cam (7) returns to the initial position.

In this state, when the operating portion (4) is pushed again, the operating force is transmitted to the sliding cam (7) via the connecting shaft (62) and the sliding cam (7) is moved. Forcibly extrude (forward). Thereafter, when this operating force is released, the rotary cam (8) rotates and moves to a position retracted relatively to the fixed cam (20). Also in this case, the sliding cam
(7) and the rotating cam (8) are separated from each other by an interval corresponding to the cam mechanism of the rotary positioning mechanism.
Each part operates smoothly so that the member moves to the retracted position. Thereby, the cursive character returns to the storage position.

[0013]

According to the present invention having the above configuration, the following specific effects are obtained. Sliding cam of the rotary positioning mechanism
(7) is a connecting shaft (62) that operates integrally with the operation unit (4).
The cam is extruded by the rear end of the rotary cam.
(8) Following the movement of the slide cam (7) by spring biasing force
Can be obtained more reliably than in the prior art in which the object is moved.

The operating section (4) is engaged with the tip of the body of the writing body in a direction in which it is pushed out, and a rotary positioning mechanism is arranged behind the writing body, Department
Since the rotary positioning mechanism can be operated by the pushing operation of (4), there is little restriction on the arrangement position of the operating section (4) in the case of a hand-operated pushing writing instrument. In other words, there is an advantage that the main body (2) can be arranged close to the base (1) side, and the inconvenience of the operation section being largely separated from the base (1) can be prevented.

[0015] Since the rotary positioning mechanism is provided in the rear area of the writing body in the main body (2), the main body is compared with a mechanism in which the rotary positioning mechanism is fitted outside the writing body.
(2) can be thin. [2] The method according to the above [1], wherein "the biasing force of the auxiliary biasing means is set to be weaker than that of the main biasing means, and the auxiliary biasing means is set to the sliding cam (7) or the rotary cam (8). The connection shaft
And (62) intervening ”have the following functions and effects in addition to the effects of the above item 1.

When the writing body is positioned at the projecting position by the action of the rotary positioning mechanism, the rotating cam (8) and the fixed cam (20) are held in contact with each other. At this time, the writing body is brought into a state where the rotary cam (8) and a part of the fixed cam (20) are in contact with each other by the main urging means having a stronger urging force than the auxiliary urging means. Therefore, the writing pressure acting on the writing body is backed up by the contact portion, and writing becomes easy. [Claim 3] In the above-mentioned item 1 or 2, the operation section (4)
And the front end of the connecting shaft (62) in an operating force transmitting state, wherein the operating portion (4) pushes the operating portion (4) in a direction of pushing out the front end portion of the body of the writing body. And the front end of the connecting shaft (62) and the rear end of the writing body are removably connected in a frictionally engaged state. ” There are the following effects in addition to the effects.

Although the operating part (4) and the connecting shaft (62) are not directly connected, the operating force of the operating part (4) is applied to the rear end of the writing body and the connecting shaft (62) via the writing body. Is transmitted to the coupling shaft (62) by a sufficient frictional engagement force between the rotary positioning mechanism and the rotary positioning mechanism. Therefore, there is no need for a member for directly connecting the operation unit (4) and the connection shaft (62).

Further, since the operating force transmitted to the connecting shaft (62) is directly transmitted to the sliding cam (7), the operation stability is further ensured. In addition, the urging force of the auxiliary urging means reliably acts on the rotating cam (8),
Since the urging force of the auxiliary urging means is not weakened by the movement of (62), it is easy to set the urging force of this auxiliary urging means. [4] In the above-mentioned item 3, "the writing body comprises a cylindrical body whose rear end is an open end, and the writing part (9
The operating portion (4) has an engaging projection (93) protruding outward at a predetermined distance from (1). Having an extruded piece (60) in contact therewith,
At the front end of the connecting shaft (62), there is provided a press-fitting piece (63) which is press-fitted into the open end of the cylindrical body in a frictional engagement state, and a base end of the press-fitting piece (63) is provided with the cylindrical body. Seat (6
4)) has the following effects in addition to the effects of the above item 3.

Since the seat (64) comes into contact with the rear end of the cylindrical body constituting the writing body, the auxiliary biasing means biases the sliding cam (7) and the rotating cam (8) in the contact direction. However, since this urging force is received by the seat (64), there is no fear that the press-fitting piece (63) is pulled out of the cylinder by the urging force. That is, the urging force of the auxiliary urging means does not affect the fitting portion between the press-fitting piece (63) and the writing body.

Also, by arranging a rotary positioning mechanism at the rear end of the main body (2) and by setting the other parts in a predetermined configuration, the writing body can be inserted and assembled from the front of the main body (2). There are advantages in terms. In addition, a well-known tubular body with a detachable tip base for allowing the writing section to appear and disappear
In the case of (2), there is an advantage that the cursive type can be replaced simply by removing the base. [5] The extrusion-type writing instrument according to [1] or [2],
"The operating section (4) includes a writing section at the front end side of the cursive
(91) is provided with a holding portion (601) that is detachably fitted to the body portion in the rear area relative to the body portion, and the rear end of the writing body and the front end of the connecting shaft (62) are frictionally engaged. In the case where the operating portion (4) and the connecting shaft (62) are connected to the operating force transmitting state by fitting in the mating state, the operating force is
(601) is transmitted to the writing body by a frictional force between the body and the body. From the writing body, a frictional force is applied through a fitting portion between a rear end of the writing body and a front end of the connecting shaft (62). The connecting shaft by the resultant force
(62). Therefore, the writing body having no engagement projection and the operation unit are connected to each other in an operation force transmitting state.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 shown in FIGS. 1 to 5 is a refill in which a body provided with a writing portion (91) at a front end is an ink accommodating portion made of a synthetic resin cylinder.
This is an example in which (9) is a cursive type, and a base (1) is detachably screwed to a front end of a cylindrical main body (2).

A clip (3) extending from the rear end of the main body (2) is attached to the rear of the main body (2), and a fixed cam (20) is formed inside the clip (3). This fixed cam
In the area where (20) is formed, a rear sliding cam (7) and a rotating cam (8) overlapping the front thereof are accommodated in series. The sliding cam (7) and the rotating cam (8) are in contact with each other back and forth via an inclined surface described later, and are fixed by the fixed cam (20), the sliding cam (7), and the rotating cam (8). A known rotary cam mechanism is configured.

For this purpose, as shown in FIGS. 4 and 5, the fixed cam (20) has a cam groove (2c) deep in the radial direction of the main body (2) on the inner peripheral surface of the main body (2). And shallow cam grooves (2d) are alternately arranged in parallel, and six axially parallel ridges (70) that fit into the respective cam grooves are provided on the sliding cam (7). The other rotating cam (8) has three axially parallel ridges (80) which fit into the deep cam groove (2c).
Is provided.

In the formation of the shallow cam groove (2d), the end face of the rotary cam (8) on the side of the accommodation portion becomes an inclined surface (2f), and each inclined surface (2f) is inclined in the same direction. Also, the rotating cam (8)
The end surface of the ridge (80) on the fixed cam (20) side and the end surface of the ridge (70) of the sliding cam (7) on the rotary cam (8) side are also similar inclined surfaces (2f). Is provided.

The sliding cam (7) and the rotary cam (8) arranged in series have a configuration in which a through hole is provided at the center, and a connection connected to the rear end of the tubular body of the refill (9). A shaft (62) penetrates the through hole and protrudes rearward from an end of the sliding cam (7), and a stopper (61) is attached to the protruding end. In this example, the connecting shaft (62) and the refill
(9) is connected to a seat provided at an end of the connection shaft (62).
A press-fitting piece (63) having a cross-shaped cross section protruding forward from (64) is press-fitted from the rear open end of the refill (9), and a predetermined frictional engagement force is generated in the press-fitted portion. I have. An auxiliary spring (81) is interposed between the stopper (61) and the sliding cam (7) so as to be externally fitted to the connection shaft (62). This auxiliary spring (81) is used for sliding cam (7) and rotating cam.
(8) is urged in the contact direction.

Behind the writing section (91) of the refill (9),
A pair of engaging projections (93) (93) formed by locally clamping a synthetic resin cylinder is provided.
3) The ring-shaped extruded piece (60) abuts against the (93) from the rear in a loosely fitted state, and matches the extruded piece (60) in a state in which the writing portion (91) is housed. A slit (2e) is opened in the trunk of 2). And this slit (2
The operating part (4) and the push-out piece (60) are connected and integrated via a connection piece (6) through which e) is inserted.

With these configurations, the pushing force of the operating section (4) in the axial direction on the outer surface of the main body (2) is connected to the connecting piece (6) via the pushing piece (60). It is transmitted to the shaft (62). Therefore, when the operating section (4) is pushed out, the sliding cam (7) is transmitted from the connecting shaft (62) to the sliding cam (7) via the stopper (61), and the sliding cam (7) is pushed in the pushing direction. Will be moved.

A base (1) is screwed to a front end of the main body (2), and the refill is accommodated in the main body (2).
A main spring (11) is interposed between the engaging projections (93) and (93) of (9) and the base (1) so as to fit on the refill (9). As a result, the refill (9) is
According to (11), it is always urged in the pushing direction. When the base (1) is removed, the front end of the main body (2) is opened, and the refill (9) is simply inserted from the front into the ring-shaped extruded piece (60),
Since the rear end opening portion of the cylindrical body is merely press-fitted into the press-fitting piece (63), the refill (9) can be taken out by forcibly pulling it out.

Therefore, when replacing the refill (9), the base (1) is removed and replaced with a new refill, and the press-fitting piece (63) is pressed into the rear end opening of the cylindrical body. The main spring (11) is returned to the outside of the refill (9), and the base (1) is screwed again.

Refill in case of writing implement of the above example
The forward and backward movements of (9) will be described. FIG. 2 shows a state in which the writing portion (91) of the refill (9) is housed in the mouth (12) of the base (1) by the main spring (11), and
(4) is also in the retracted position.

Each of the ridges (70) of the sliding cam (7) is engaged in the deep cam groove (2c) and the shallow cam groove (2d). (80) is located at a position fitted into the deep cam groove (2c) in FIGS.
And the rotating cam (8) is in the most retracted position.

In this state, when the operating portion (4) is pushed forward along the body surface of the main body (2), the connecting shaft connected to the cylindrical body of the refill (9) in a frictionally engaged state by press-fitting. (62) is advanced, and the thrust of the stopper (61) is
It is transmitted to the sliding cam (7) via (81) and is pushed in. At this time, the rotary cam (8) is pressed against the sliding cam (7) and the fixed cam (20) by the main spring (11) backed up by the auxiliary spring (81).

Then, the front end of the ridge (70) and the ridge (8)
When the rear end of (0) coincides with the inclined surface (2f) of the fixed cam (20), the biasing force of the main spring (11) causes the inclined surface of the ridge (80) to form a shallow cam groove (2d). By moving along the inclined surface (2f), the shallow cam groove (2d) and the ridge (80) are positioned so as to be aligned in the axial direction. This is the above-mentioned protruding position (see FIG. 3). In this state, the inclined surface (2
Since there is a step at the boundary with f) (see FIG. 5), the rotating cam
(8) is maintained in the protruding position, and the writing section (91) is
The seat (64) abuts against the rotary cam (8) in a state of protruding from the (1), and the ridge (80) of the rotary cam (8) is
0) is maintained in contact with the inclined surface (2f), and the writing pressure at the time of writing is backed up by the constituent walls of the main body (2) by these contacts.

In order to store the refill (9) in the protruding position, the operating portion (4) is again pushed out against the urging force of the main spring (11). When the pushing operation amount reaches a predetermined value, the sliding cam (7) is pushed in by the stopper (61), so that the inclined surface of the ridge (70) and the ridge (8) are pushed.
The inclined surface (2) at the end of the cam groove (2c) forming area where the inclined surface of (0) is deep
As a result, the rotating cam (8) rotates and the ridge (80) fits into the deep cam groove (2c). When the operating force of the operating section (4) is released in this state, the ridge (80) is
Then, the sliding cam (7) and the rotating cam (8) return to the most retracted position. This allows the refill
(9) is pushed by the main spring (11) and returns to the storage position.

As described above, by repeating the pushing operation of the operating section (4), the refill (9) is positioned at the projecting position and the storage position by the action of the rotary positioning mechanism described above. In the first embodiment described above, the auxiliary spring (81) is connected to the stopper (61) of the connecting shaft (62) and the sliding cam (7).
The auxiliary spring (81) may be interposed between the spring receiver (21) attached to the main body (2) and the rotating cam (8) as shown in FIG.

The press-fitting piece (63) is changed to a press-fitting method in which the press-fitting piece (63) is press-fitted into the rear end opening portion of the cursive cylinder. As shown in FIG. The press-fit cap (65) provided with an outer fitting is press-fitted into the rear end of the writing body, and the refill (9) and the connecting shaft (62) are connected in a frictional engagement state by the outer fitting press-fitting portion. The operation force of the section (4) may be transmitted.

The built-in position of the auxiliary spring (81) may be interposed between the rotary cam (8) and the seat (64) as in the examples shown in FIGS. Also in this case, the interval between the rotating cam (8) and the seat (64) is held by the connecting shaft (62) so that the sliding cam (7) and the rotating cam (8) have a margin to be separated by a predetermined distance. I have.

In this case, when the refill (9) is in the accommodation position accommodated in the main body (2), the ridge (80) of the rotating cam (8) is engaged with the deep cam groove (2c) of the fixed cam (20). In this state, when the connecting shaft (62) is pushed in by pushing out the operating section (4), the sliding cam (7) is brought into contact with the stopper (61).
Directly pushed by. After the pushing operation, when the ridge (70) and the ridge (80) coincide with the inclined surface (2f) of the fixed cam (20), the cam is rotated by a predetermined angle by the urging force of the auxiliary spring (81), and the shallow cam is rotated. The ridge (81) is fitted into the groove (2d), and the refill (9) is maintained at the projecting position.

When the operating portion (4) is pushed again from this state, the ridge (80) rotates so as to fit into the deep cam groove (2c) in the same manner as in the first embodiment. Since the separating operation between the sliding cam (7) and the rotating cam (8) during this rotation is ensured, smooth operation is ensured. [Others] In the above-described embodiment, the case where the writing section (91) and the cylinder of the ink containing section are formed by using the refill (92) having substantially the same diameter as the writing body has been described as an example. It can also be used for writing instruments that use a mold refill (9).

In this case, as shown in FIG. 9, a cylindrical holding portion (601) is provided in a large-diameter ink storage portion that follows the thin shaft portion (92) following the writing portion (91) of the refill (9). ) May be closely fitted (a relationship of mutually fitting in a press-fit state). In this case, the holding section (601) and the operation section (4) are connected by a connecting piece (6), and the operating force of the operation section (4) is reduced by the holding section.
(601) to the connecting shaft (62). At this time, the forward thrust of the operation unit (4) is
And the refill (9) is transmitted to the refill (9) by the frictional engagement force at the close fitting portion, and the refill (9)
The force is transmitted from the refill (9) to the connection shaft (62) by the frictional engagement force between the through hole (99) at the rear end of the rear end and the press-fitting piece (63) projecting forward from the seat (64). The movement force in the backward direction is the main spring
(11).

Further, the present invention can be applied to an extruding writing instrument using other writing objects other than a ballpoint pen, such as a mechanical pencil. In this case, it is necessary to be able to move forward long for centering. Thus, when writing with the mechanical pencil maintained at the projecting position, when the lead is worn out, the operating unit (4) is further advanced from a position corresponding to the projecting position, and the chuck spring of the mechanical pencil is moved. (Because the front end of the mechanical pencil hits the inner surface of the front end of the main body and does not advance any further), the centering operation similar to a normal knock mechanical pencil can be performed at hand.

The connecting shaft (62) may be integrated with the sliding cam (7). In the first embodiment,
The mounting part of the operation part (4) of the main body (2) is provided near the base (1), and the surface of the operation part (4) is made to have continuous irregularities, and the outer periphery of the main body (2) including this part Since a knurl (2a) is provided in a predetermined area of the surface, the grip with a finger is sure during writing, and writing is easy.

[Brief description of the drawings]

FIG. 1 is an external view of a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view thereof.

FIG. 3 is a longitudinal sectional view showing a state in which the refill (9) is in a protruding position.

FIG. 4 is a sectional view taken along line IV-IV.

Fig. 5 Deep cam groove (2c), shallow cam groove (2d), inclined surface (2f)
Development showing the relationship

FIG. 6 shows an arrangement of an auxiliary spring (81) and a refill.
Sectional view of relevant part of another example of connection mode between (9) and connection shaft (62)

FIG. 7 is a cross-sectional view of another example in which the auxiliary spring (81) is interposed between the rotary cam (8) and the seat (64) when the refill (9) is in the storage position.

FIG. 8 is a sectional view of the other example when the refill (9) is in a protruding position.

FIG. 9 is an explanatory view of an example applied to a thick shaft type refill (9).

[Explanation of symbols]

(1): base, (4): operation part, (2): body, (20): fixed cam, (21): spring receiver, (8): rotating cam (80): convex ridge, (7)
: Sliding cam, (70): convex, (11): main spring, (81): auxiliary spring, (60): extruded piece, (62): connecting shaft, (61): stopper,
(9): Refill, (91): Writing part, (92): Fine shaft part, (2
a): knurl, (2c): deep cam groove, (2d): shallow cam groove, (2f): inclined surface, (2e): slit (601): holding part (the same reference numerals in each drawing are the same or the same). The corresponding part is shown.)

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[Procedure amendment]

[Submission date] March 24, 2000 (200.3.2.
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

Claims (5)

[Claims] 1. A fixed cam provided on an inner surface of a cylindrical main body (2).
(20), a sliding cam (7) slidably held by the fixed cam (20), and the sliding cam (7) and the fixed cam (20). A rotary positioning mechanism comprising a rotary cam (8) housed therein is built in, and the rotary unit (4) exposed on the side of the main body (2) is pushed out in the axial direction to thereby perform the rotary positioning. By the mechanism, the main body
The writing body, which is housed so as to be freely retractable and retractable in (2) and is urged in the housing direction by the main urging means, is moved to a position where the writing part (91) projects from the main body and a storage position where the writing part (91) is housed in the main body (2). In a push-type writing instrument for positioning, a connecting shaft (62) is provided to penetrate the rotating cam (8) of the rotary positioning mechanism so as to form a pair of cylinders, and a rear end of the connecting shaft (62) is provided. The sliding cam (7) is rotatably connected to the sliding cam (7), and the sliding cam (7) and the rotating cam (8) are held by the connecting shaft (62) so as to be separated from each other in the axial direction. Auxiliary biasing means for biasing the moving cam (7) and the rotating cam (8) in the contact direction is provided, and the operating portion (4) and the front end of the connecting shaft (62) are connected in an operating force transmitting state. And the rotary positioning mechanism
(2) An extrusion-type writing instrument provided in the rear area of the writing body. 2. The extruding writing instrument according to claim 1, wherein the urging force of the auxiliary urging means is set to be weaker than that of the main urging means, and the auxiliary urging means is set to the sliding cam (7) or the rotating member. An extruding writing instrument interposed between the cam (8) and the connecting shaft (62). 3. The extruding writing instrument according to claim 1, wherein the operating portion (4) and the front end of the connecting shaft (62) are connected in an operating force transmitting state. Engages with the front end portion of the body of the writing body in the direction in which it is pushed out, and allows the front end of the connecting shaft (62) and the rear end of the writing body to be detachably engaged. An extruded writing instrument that is connected in a mated state. 4. The extruding writing instrument according to claim 3, wherein said writing body comprises a cylindrical body having a rear end open end, and protrudes outward at a predetermined distance from said writing portion (91) of said cylindrical body. The operating portion (4) has an extruded piece (60) that is fitted to the writing body and abuts against the engaging protrusion (93) from behind, At the front end of the connecting shaft (62), a press-fitting piece (63) is press-fitted into the open end of the cylindrical body in a frictionally engaged state.
And a seat (64) provided at the base end of the press-fitting piece (63) at the rear end of the tubular body. 5. The writing instrument according to claim 1, wherein
The operating unit (4) includes a writing unit (9
1) having a holding portion detachably fitted in a frictional engagement state with the trunk portion in the rear area than the rear end of the writing body and the connecting shaft
An extruding writing instrument in which the operating portion (4) and the connecting shaft (62) are connected in the operating force transmitting state by fitting the front end of the (62) into a frictional engagement state.