JP6392059B2 - Multiple haunting writing instruments - Google Patents

Description

  The present invention relates to a multiple writing type writing instrument in which a plurality of writing cores are mounted in a shaft cylinder, and these writing cores are selectively protruded and projected.

Conventionally, this type of invention includes, for example, a shaft cylinder (10), a writing core (refill 20, 20 ′) having a writing portion (21) at the front end, and the writing core as described in Patent Document 1. A slide piece (pushing element 42) connected to the rear end side, and a plurality of writing cores and a plurality of compression springs (52, 53) for urging the writing piece backward, respectively, and are selectively pushed. In addition, there is a writing instrument in which the writing portion (21) is projected from the shaft cylinder by the advance of the slide piece. Each of the plurality of compression springs (52, 53) is annularly attached to the writing core (refill 20, 20 '), and is arranged with an appropriate gap in order to avoid mutual interference with other biasing members. Established.
In this prior art, the writing core is made of a plurality of different color pen refills for ballpoint pens, refills for sharp pens, refills for electronic input pens, etc., thereby realizing a multifunctional writing instrument with a single cylinder. be able to.

However, according to the above prior art, when the number of writing cores (refills 20, 20 ′) is increased, the number of compression springs (52, 53) is increased by the number of writing cores. When the compression springs (52, 53) are increased, the outer diameter of each urging member is larger than the writing core, the clearance secured between the urging members adjacent to each other, and the like. There is a risk that the inner and outer diameters will increase significantly, particularly when the number of writing cores is large.
Therefore, there is a demand for a structure in which a plurality of writing cores are advanced and retracted by a single compression spring. However, in order to advance and retract and disengage the writing core with a simple structure, a device is required.

JP 2009-111988 A

  The present invention has been made in view of the above-described conventional circumstances, and the problem is that the shaft diameter can be prevented from increasing as the number of writing cores increases, and a simple structure can be used. An object of the present invention is to provide a multi-intrusive writing instrument that can advance, retract, and disengage a writing core.

  One means for solving the above-described problem is that a plurality of slide writing cores, each having a slide piece connected to the rear end side of the writing core, are provided in the shaft cylinder, and the sliding writing core that is selectively pushed is provided. In a multiple intrusion type writing instrument in which the writing part at the front end is projected from the shaft cylinder, a compression coil spring is provided so as to contract forward in the shaft cylinder, and a plurality of the slide writing cores are arranged on the inner periphery of the one compression coil spring. Alternatively, the slide writing cores are arranged in a circumferential direction along the outer periphery, and each of the slide writing cores is a plurality of retractable writing tools that are brought into contact with the one compression coil spring from the rear, and are written by being advanced with respect to the shaft cylinder. A locked portion to which the slide piece in a state in which the portion is protruded is locked, a release member capable of moving forward and backward with respect to the shaft tube on the shaft tube center side of the plurality of slide pieces, and the release member on the rear end side Attached to the rear of the shaft And when the other slide piece is advanced in a state where the previously advanced slide piece is locked to the locked portion, the other slide piece that moves forward moves the release member. The release member is pushed, and the release member pushes the slide piece that has been advanced first to remove it from the locked portion.

  Since the present invention is configured as described above, it is possible to prevent the shaft diameter from becoming thicker as the number of writing cores increases, and the writing core can be advanced, retracted, and disengaged with a simple structure. can do.

It is an internal structure figure which shows an example of the multiple appearance type writing instrument which concerns on this invention. It is a principal part exploded view of the same multiple intrusive writing instrument. It is operation | movement explanatory drawing of the said multiple appearance type writing instrument, (I) shows an initial state, (II) shows the state which advanced the cancellation | release member by pushing of one slide piece. It is operation | movement explanatory drawing of the multiple intrusion-type writing instrument, (III) shows the state which latched one slide piece, (IV) is the slide piece which advanced the cancellation | release member advanced ahead by pushing of the other slide piece first The state made to contact is shown. It is operation | movement explanatory drawing of the same plural appearance type writing instrument, (V) shows the state immediately after the latching of one slide piece is released, (VI) is one slide piece reverse | retreated, and an engagement protrusion is used as a releasing member. Shows the state of interference. It is operation | movement explanatory drawing of the same plural appearance type writing instrument, (VII) shows the state just before the engaging protrusion of one slide piece gets over the to-be-engaged protrusion of a releasing member, (VIII) is the engagement of one slide piece The state immediately after a protrusion gets over the engagement protrusion of a releasing member is shown. It is principal part sectional drawing which shows the other examples of the multiple intrusion-type writing instrument which concerns on this invention in (a)-(c), respectively.

The first feature of the present embodiment is that a plurality of slide writing cores, each having a slide piece connected to the rear end side of the writing core, are provided in the shaft cylinder, and the sliding writing core that is selectively pushed is provided. In a multiple intrusion type writing instrument in which the writing part at the front end is projected from the shaft cylinder, a compression coil spring is provided so as to contract forward in the shaft cylinder, and a plurality of the slide writing cores are arranged on the inner periphery of the one compression coil spring. Alternatively, the slide writing cores are arranged in a circumferential direction along the outer periphery, and each of the slide writing cores is a plurality of retractable writing tools that are brought into contact with the one compression coil spring from the rear, and are written by being advanced with respect to the shaft cylinder. A locked portion to which the slide piece in a state in which the portion is protruded is locked, a release member capable of moving forward and backward with respect to the shaft tube on the shaft tube center side of the plurality of slide pieces, and the release member on the rear end side Energize backward against the barrel And when the other slide piece is advanced in a state where the previously advanced slide piece is locked to the locked portion, the other slide piece that moves forward pushes the release member. Further, the release member pushes the slide piece which has been advanced first so as to be removed from the locked portion.
Here, the “writing core” includes a writing core for a ballpoint pen, a writing core for a mechanical pencil, a writing core for an in / out type sign pen and an in / out type marker pen, a writing core for an electronic pen, and a writing for a correction pen. Includes wicks.

According to the above configuration, when any one of the plurality of slide writing cores is selected and the slide writing core is pushed forward by a finger or the like, the slide writing core moves forward while contracting one compression coil spring. Then, the writing part at the front end is projected from the shaft tube, and the slide piece is locked to the locked part.
In this locked state, when another slide writing core is pushed forward by a finger or the like, the other slide piece moving forward pushes the release member, and the release member pushes the slide piece advanced first. Move to disengage from the locked part. Therefore, the slide writing core that has advanced first is urged by the compression coil spring and retracts.

As a second feature, a release member support portion is provided on the rear end side of the shaft tube so that the release member is inserted and supported so as to be able to advance and retreat, and the urging member is provided with respect to the release member support portion. It is provided to urge the rearward.
According to this configuration, since the release member is supported on the rear end side of the shaft tube and urged rearward, the configuration on the front side of the support portion can be simplified and productivity can be improved.

As a third feature, the release member support portion is provided so as to come into contact with both the release member and the slide piece from the rear side.
According to this configuration, since the release member and the slide piece are engaged and disengaged at the axial position with respect to the contact point with the release member support portion, the engagement / disengagement position is prevented from fluctuating back and forth. Operation can be obtained.

As a fourth feature, a loose fitting means for removably fitting the slide piece in the initial position is provided on the rear end side in the shaft cylinder (see FIG. 7).
According to this configuration, the slide writing core can be prevented from moving forward due to vibration or the like.

In addition, as a preferable example of the urging member, a coil spring is used and provided in an annular shape around the release member inserted through the release member support portion.
According to this configuration, the configuration on the front side of the release member support portion can be simplified, and the productivity can be improved.

Next, a preferred embodiment having the above features will be described in detail with reference to the drawings.
In addition, in this specification, a shaft cylinder axial direction means the direction where the centerline of a shaft cylinder extends. “Front” means one side of the axial direction of the cylinder and the tip direction of the writing portion. Further, “rear” means a direction opposite to the one side in the axial direction of the shaft cylinder. The “axial cylinder radial direction” means a direction orthogonal to the axial cylinder axis direction. Further, the “outward direction of the shaft tube diameter” means a direction away from the center of the shaft tube along the shaft tube diameter direction. The “inner cylinder radial direction” means a direction approaching the center of the axial cylinder along the axial cylinder radial direction.

  As shown in FIG. 1, the multiple intrusive writing instrument 1 includes a shaft tube 10, a plurality of types of slide writing cores 21 and 22 provided in the shaft tube 10, slide writing cores 21 and 22, and a release to be described later. The guide body 30 that guides the advancement and retraction of the member 70, the single compression coil spring 50 that urges the plurality of slide writing cores 21 and 22 rearward, and the release member 70 that releases the locked state of the slide piece 21a (or 22a). And a biasing member 80 that biases the release member 70 rearward, and the writing portion of the slide writing core 21 or 22 that is selectively pushed is projected from the front end of the shaft tube 10.

The shaft tube 10 is formed by connecting a rear shaft tube 12 to a front shaft tube 11.
As other examples of the shaft tube 10, a mode including one cylindrical body, a mode in which a tapered tip is connected to the distal end side of the cylindrical body, a mode in which three or more cylindrical bodies are connected, and the like Is possible.

  The front shaft cylinder 11 is a long cylindrical member formed with a tapered front end side, and has an opening 11a for projecting and retracting the writing parts of the slide writing cores 21 and 22 at the front end. The opening 11a has an inner diameter appropriately set so as to lock the stepped writing portion at the front end of the mechanical pencil writing core 22b in a protruding state.

The rear shaft cylinder 12 has a plurality of window portions 12a and 12b penetrating the peripheral wall in the radial direction on the rear end side. Further, the rearmost end portion of the rear shaft cylinder 12 is open.
The plurality of window portions 12a and 12b are arranged at predetermined intervals in the circumferential direction of the shaft cylinder, and are formed in a long shape extending in the front-rear direction.
One (the lower side according to FIG. 1) window 12a is for exposing the slide piece 21a (ballpoint pen core), and the other (the upper side according to FIG. 1) window 12b is a slide. This is for exposing the piece 22a (mechanical pencil refill).

  One slide writing core 21 is formed by detachably connecting a ballpoint writing core 21b to the front end side of the slide piece 21a. A plurality (for example, five) of the slide writing cores 21 are provided, and are connected to ballpoint pen writing cores 21b of different colors.

  The other slide writing core 22 is configured such that a mechanical pencil writing core 22b is detachably connected to the front end side of the slide piece 22a.

One slide piece 21a has an operation portion 21a1 projecting outward in the axial tube diameter on the rear end side. In addition, the slide piece 21a has an engaging projection 21a2 projecting toward the center of the shaft cylinder and a rear side of the engaging projection 21a2 on the inner diameter side (upper side according to FIG. 2) of the shaft cylinder. And an inclined surface 21a3.
In FIG. 2, reference numeral 21 a <b> 4 is a protrusion that contacts the receiving member 60. Reference numeral 21a5 is a protrusion that engages with the guide body 30 and restricts the movement of the slide piece 21a in the outer direction of the axial tube diameter.

The other slide piece 22a has, on its rear end side, a clip support portion 22a1 that protrudes outward in the axial cylinder diameter. The clip support portion 22a1 is provided with an urging member (for example, a coil spring or a leaf spring). A clip 24 with an opening / closing operation function is attached (see FIG. 1).
In addition, the slide piece 22a has an engagement projection 22a2 projecting toward the center of the shaft cylinder and a rear side of the engagement projection 22a2 on the inner diameter side (lower side according to FIG. 2). And an inclined surface 22a3.
In FIG. 2, reference numeral 22 a 4 is a protrusion that contacts the receiving member 60. Reference numeral 22a5 is a protrusion that engages with the guide body 30 and restricts the movement of the slide piece 22a in the outer direction of the axial tube diameter.

  Each of the engagement protrusions 21a2 and 22a2 is a mountain-shaped protrusion having inclined surfaces on the front and rear sides (see FIG. 2). The engagement protrusions 21a2 and 22a2 abut against the release member 70 described later to push the release member 70. Overcoming backwards.

  Each of the inclined surfaces 21a3 and 22a3 is a front end surface of a recess formed on the surface of the slide piece 21a (or 22a) on the inner side in the axial tube diameter (see FIG. 2). The inclined surface 21a3 (or 22a3) is inclined forward inwardly in the axial direction of the cylinder so as to be slidably contacted from behind by an engaged protrusion 72 of a release member 70 described later.

The ballpoint pen writing core 21b has a known structure in which a ballpoint pen tip is connected to the front end of the ink storage tube, and ink in the ink storage tube is discharged from the front end of the ballpoint pen tip.
The pencil lead 22b has a well-known structure in which a lead lead feeding mechanism such as a chuck, a clutch ring, and a biasing member is connected to the front end side of the lead tank. The lead end in the lead tank is fed out by the rear end being advanced and retracted while being engaged with the opening 11a at the front end of the shaft tube 10.

  The ballpoint pen writing core 21 b and the mechanical pencil writing core 22 b are inserted through the divider 40. The divider 40 is fixed near the center of the axial tube 10 in the axial direction, and the slide writing core 21 and the slide writing core 22 are respectively inserted through the through holes. The divider 40 receives a front end portion of a compression coil spring 50 described later.

  The guide body 30 includes a guide portion 31 that guides the advance and retreat of the slide pieces 21a and 22a of the slide writing cores 21 and 22, and a release member support that supports the release member 70 at the rear end side of the guide portion 31 so as to advance and retreat. And a guide part 31 along the rear side inner peripheral surface of the rear shaft cylinder 12 and a release member support part 32 protruding rearward from the rear end of the rear shaft cylinder 12. When the cap 33 is knocked, the guide body 30 moves forward in the shaft cylinder 10 and is pushed back by the slide pieces 21a and 22a.

The guide portion 31 is a substantially cylindrical member that detachably engages the slide pieces 21a and 22a at the forward positions. For example, the guide portion 31 is disclosed in Japanese Unexamined Patent Application Publication No. 2012-200909. Apply the structure.
The guide body 30 in the illustrated example has a plurality of guide portions that guide the advance and retreat of each of the plurality of slide pieces 21a and 22a at intervals in the circumferential direction, and the slide pieces when they are advanced to the front end side of each guide portion. 21a (or 22a) has a stepped locked portion 31a (engagement / disengagement means) that sinks and locks the shaft cylinder inwardly.

The release member support portion 32 integrally includes a support plate portion 32a through which the release member 70 is inserted so as to be able to advance and retreat, and a biasing member storage portion 32b that protrudes rearward from the support plate portion 32a.
The peripheral edge of the support plate portion 32 a is received by the step portion in the rear shaft cylinder 12 so as not to be retracted. Both the rear end portions of the slide pieces 21a and 22a and the restricting projections 74 of the release member 70 come into contact with the front end surface of the support plate portion 32a from the front side.
The biasing member storage portion 32b protrudes rearward from the rear end opening of the rear shaft cylinder 12, stores the biasing member 80 on the inner peripheral side thereof, and connects the cap 33 on the outer peripheral side thereof.

A single compression coil spring 50 is provided along the inner peripheral surface of the shaft tube 10 so as to contract forward in the shaft tube 10.
A front end seat portion of the compression coil spring 50 is received by a portion that cannot advance and retreat in the shaft cylinder 10 (the rear end portion of the divider 40 according to the illustrated example). A plurality of slide writing cores 21 and 22 (specifically, slide pieces 21 a and 22 a) are in contact with the rear end seat portion of the compression coil spring 50 via the receiving member 60 from the rear side.
In other words, the plurality of slide writing cores 21 and 22 are arranged on the inner peripheral side of one compression coil spring 50 at a predetermined interval in the circumferential direction, and the rear end seat portion of the compression coil spring 50 is contacted from the rear side. It touches.

The receiving member 60 is a substantially cylindrical member that comes into contact with the rear end seat portion of the compression coil spring 50 from behind, and advances and retreats in the shaft cylinder 10 as the compression coil spring 50 contracts.
As shown in FIG. 2, the receiving member 60 is formed in a substantially cylindrical shape from an insertion portion 61 that is inserted on the rear end side of the compression coil spring 50 and a receiving portion 62 that contacts the rear end seat portion of the compression coil spring 50. The ballpoint pen writing core 21b and the mechanical pencil writing core 22b are inserted through the inside.

The release member 70 is disposed on the center side of the plurality of slide pieces 21a and 22a, and is formed in a long shaft shape that can advance and retract by a predetermined amount with respect to the shaft tube 10 and that can be finely moved in the radial direction.
On the front end side of the release member 70, engagement protrusions 72a2 and 22a2 of the slide pieces 21a and 22a and engagement protrusions 72 that can be engaged with the inclined surfaces 21a3 and 22a3 are provided. According to the illustrated example, the engaged protrusion 72 has an annular inclined surface that decreases in diameter toward the front.

  Further, on the rear end side of the release member 70, a biasing member mounting portion 73 for mounting the biasing member 80, and a regulation for restricting rearward movement of the release member 70 on the front side of the biasing member mounting portion 73. The protrusion 74 is provided integrally.

  The biasing member mounting portion 73 is a shaft-like portion that is inserted into the support plate portion 32a of the release member support portion 32, and a biasing member 80 (compression coil spring) is annularly mounted around the biasing member mounting portion 73. An annular spring receiving member 81 that receives the rear end of the urging member 80 is fixed to the rear end side from 80.

  The restricting protrusion 74 is an annular protrusion that protrudes radially outward from the outer peripheral surface of the biasing member mounting portion 73. The regulation protrusion 74 has an outer diameter larger than that of the through hole at the center of the support plate portion 32a so as to come into contact with the support plate portion 32a from the front side.

  The urging member 80 is a compression coil spring that repels the release member 70 rearward. The urging member 80 is annularly mounted around the urging member mounting portion 73, its front end abuts against the support plate portion 32 a, and its rear end is a spring. It is received by the receiving member 81.

Next, the characteristic operation and effect of the multiple intrusive writing instrument 1 having the above-described configuration will be described in detail. 3 to 6, among the slide pieces 21 a and 22 a and the release member 70, the spring receiving member 81 and the like, the members moved from the previous state are hatched.
First, in the initial state shown in FIG. 3I, all the slide pieces 21 a and 22 a are in contact with the front end surface of the release member support portion 32 in the guide body 30. The engaged protrusions 72 of the release member 70 are in contact with the engaging protrusions 21a2 and 22a2 of the slide pieces 21a and 22a from the front side. The release member 70 is urged rearward by the urging member 80.

  Next, as shown in FIG. 3 (II), when a finger or the like is put on the clip 24 with the opening / closing operation function and the slide piece 22a integrated with the clip 24 with the opening / closing operation function is pushed forward, the slide piece 22 a moves forward with the receiving member 60 against the biasing force of the compression coil spring 50, and the engagement protrusion 22 a 2 of the slide piece 22 a comes into contact with the engaged protrusion 72 of the release member 70 to advance the release member 70. .

When the slide piece 22a further advances, the release member 70 that advances together with the slide piece 22a compresses the urging member 80 (compression coil spring) and does not move forward, and the engagement protrusion 22a2 of the slide piece 22a is released from the release member 70. The front of the engaged protrusion 72 is moved over (see FIG. 4 (III)).
Then, the slide piece 22a is locked to the locked portion 31a (see FIG. 1) of the guide body 30 so as to sink into the shaft tube 10, and the writing portion of the slide writing core 22 is projected. Retained.
Further, the other slide piece 21a is brought into contact with the release member 70 retracted by the urging force of the urging member 80 and is held at the retracted position (see FIG. 4 (III)).

  Further, when the slide piece 22a that has been advanced first is locked to the locked portion 31a and the other slide piece 21a is pushed forward by a finger or the like as shown in FIG. Is pushed by the engagement protrusion 21a2 of the slide piece 21a, and the release member 70 also advances.

  The advancing release member 70 causes the engaged projection 72 to be in sliding contact with the inclined surface 22a3 of the slide piece 22a that has been advanced first, so that the slide piece 22a that has been advanced first is in the reverse direction to the sinking direction. Push it up (upward in the figure) to remove it from the locked portion 31a. FIG. 5 (V) shows a state immediately after the slide piece 22a is detached from the locked portion 31a.

  The slide piece 22a released from the locked state as described above is moved rearward by the biasing force of the compression coil spring 50 to immerse the writing portion of the slide writing core 22, and as shown in FIG. The engaging protrusion 22 a 2 is brought into contact with the engaged protrusion 72 of the release member 70. Accordingly, the release member 70 swings toward the other slide piece 21a in the axial direction of the shaft cylinder and advances slightly by sliding contact with the engagement protrusion 21a2 of the other slide piece 21a (see FIG. 6 (VII)). ).

Next, as shown in FIGS. 6 (VII) and (VIII), one slide piece 22a gets over the engaged protrusion 72 of the release member 70 and further retracts. FIG. 6 (VII) shows a state immediately before the engagement protrusion 22a2 of one slide piece 22a gets over the engagement protrusion 72, and FIG. 6 (VIII) shows the engagement protrusion 72a. The state immediately after getting over is shown. In FIG. 6 (VIII), the front end side of the release member 70 is slightly bent toward the slide piece 21a side (downward in the drawing) by the engaged protrusion 72 being pushed in the axial tube radial direction by the engagement protrusion 22a2.
Thereafter, when the finger or the like is separated from the slide piece 21a, all the slide pieces 21a and 22a are urged rearward by the compression coil spring 50 and return to the initial position shown in FIG.

  The above-described operation is performed in substantially the same manner when any of the plurality of slide writing cores 21 and 22 is selected.

  Therefore, according to the multiple writing type writing instrument 1 having the above-described configuration, even if any slide writing core 21 (or 22) of the plurality of sliding writing cores 21 and 22 moves forward, the slide writing core 21 (or 22). Can be urged backward by one compression coil spring 50. For this reason, compared with the prior art in which the slide writing core is urged by a plurality of small coil springs, the structure in the shaft cylinder 10 can be simplified, and the shaft cylinder diameter can be reduced. Become.

Next, another embodiment will be described.
Since the embodiment shown below is a partial modification of the multiple intrusion-type writing instrument 1, the changed part will be mainly described in detail, and the same reference numerals will be given to parts that are substantially the same as the multiple indentation-type writing instrument 1. Detailed description will be omitted when used.

7A has a configuration in which the release member 70 is replaced with the release member 70a and the spring receiving member 81 is omitted from the multiple-drawn type writing instrument 1 shown in FIG.
The release member 70 a is provided with a spring receiving portion 75 at the rear end of the biasing member mounting portion 73. The spring receiving portion 75 receives the rear end of the biasing member 80.
Further, the restricting protrusion 74 in the release member 70a is inserted from the rear side with respect to the through hole 32a1 on the center side of the support plate portion 32a, and has an annular inclined surface with an appropriate outer diameter on the front side.

  Therefore, according to the multiple intrusion type writing instrument 2 shown in FIG. 7A, as in the multiple indentation type writing instrument 1 described above, it is possible to suppress the shaft diameter from increasing with the increase in the number of writing cores. In addition, the configuration of the release member 70a, the biasing member 80, and the like can be further simplified. In addition, at the time of manufacturing, after the biasing member 80 is mounted on the release member support portion 32, the release member 70a may be inserted into the release member support portion 32 from the rear, so that the assemblability is good.

7B is a configuration in which the release member 70 is replaced with the release member 70b, the spring receiving member 81 is omitted, and the fitting / removing member 90 is added to the multiple entry / exit writing instrument 1. It is said.
On the rear end side of the release member 70 b, the biasing member 80 is annularly mounted along the outer peripheral surface of the shaft-shaped biasing member mounting portion 73, and the biasing member 80 is integrated with the biasing member mounting portion 73. This is received by the spring receiving portion 75.
In addition, on the front side of the restricting projection 74 in the release member 70b, a fitting / removing member 90 (slow fitting means) that is detachably fitted to the slide pieces 21a, 22a at the initial position is provided.
Hamada' member 90 is elastically deformable synthetic resin material into the barrel radially (e.g., d elastomer resin or rubber, etc.) is formed in a substantially cylindrical shape from, coaxially in front of the regulating protrusion 74 in the releasing member 70b It is fitted and fixed to. And the outer peripheral surface of this fitting / removal member 90 is pressed from the axial cylinder center side with respect to the slide pieces 21a and 22a.
More specifically, an annular protrusion 91 having a mountain-shaped cross section is formed on the outer peripheral surface of the fitting / removing member 90, and the annular protrusion 91 is pressed against the slide pieces 21a and 22a.

According to the fitting / removing member 90 configured as described above, the slide pieces 21a and 22a are restricted from moving outward in the axial tube diameter by causing the protrusions 21a5 and 22a5 (see FIG. 2) to contact the guide body 30, respectively. In the state, it is loosely pressed by the fitting / removing member 90 from the axial center side.
For this reason, each slide piece 21a (or 22a) does not easily move forward due to vibration or the like. However, when the slide piece 21a (or 22a) is pushed forward by a finger or the like, the slide piece 21a (or 22a) starts from a loosely fitted state with the fitting / removing member 90. Take off and move forward.

  Therefore, according to the plural in / out type writing instrument 3 shown in FIG. 7 (b), the same effect as the plural in / out type writing instruments 1 and 2 described above is obtained, and at the initial position of each slide piece 21a (or 22a). The stationary state can be maintained well.

Moreover, the multiple intrusive writing instrument 4 shown in FIG. 7C has a configuration in which the releasing member 70 is replaced with the releasing member 70c and the fitting / removing member 90 is added to the multiple intrusive writing instrument 1.
The release member 70 c is fitted and fixed to the fitting / removing member 90 (slow fitting means) on the front side of the restricting protrusion 74, and the spring receiving member 81 that receives the biasing member 80 on the rear end side of the biasing member mounting portion 73. Is provided.
Therefore, also in the multiple appearance type writing instrument 4 shown in FIG.7 (c), the effect similar to the Example demonstrated previously can be acquired.

  In the above embodiment, the slide writing core 22 (mechanical pencil refill) is protruded and the lead core is fed out from the front end thereof in the same manner as in the prior art or the like. It is possible by operation.

  Further, according to the above embodiment, the plurality of slide writing cores 21 and 22 are disposed on the inner peripheral side of the compression coil spring 50. As another example, the plurality of slide writing cores 21 and 22 are provided on the outer peripheral side of the compression coil spring 50. A structure in which 22 is provided is also possible.

  Moreover, according to the said Example, although the slide writing core 21 using the writing core 21b for ball-point pens and the writing core 22b for mechanical pencils were illustrated as a specific aspect of a slide writing core, it was illustrated. As another example of the slide writing core, an electronic input pen can be used. Further, the positions of the ballpoint pen and the mechanical pencil can be interchanged, and the slide writing core can be configured using the writing core of a sign pen, a marking pen, or a correction pen.

  Further, according to the above-described embodiment, the engaging / disengaging means (the locked portion 31a or the like) for locking the slide writing cores 21 and 22 when the writing portion is protruded can be moved back and forth within the shaft tube 10. However, as another example, the engaging / disengaging means (the locked portion 31a or the like) can be provided on the peripheral wall of the shaft tube 10.

  Moreover, according to the said Example, although the elastic force toward the back of the compression coil spring 50 was transmitted to the slide writing cores 21 and 22 via the receiving member 60, as another example, the receiving member 60 is used. The elastic force of the compression coil spring 50 may be directly transmitted to the slide writing cores 21 and 22 without being provided. That is, in this other example, the slide writing cores 21 and 22 are brought into direct contact with the compression coil spring 50 from the rear side.

  Further, according to the above embodiment, the rear end side of the compression coil spring 50 is brought into contact with the slide pieces 21a and 22a. However, as another example, the rear end side of the compression coil spring 50 is connected to the writing core 21b for ballpoint pen and the mechanical pencil. It is also possible to contact the writing core 22b. In this case, specifically, protrusions are provided on the outer peripheral surfaces of the ballpoint pen writing core 21b and the mechanical pencil writing core 22b, and the rear end of the compression coil spring 50 can be brought into direct or indirect contact with the protrusions. That's fine.

  Further, according to the above embodiment, the compression coil spring is used for the urging member 80. However, as another example of the urging member 80, a spring that pulls the release member 70 from the rear side may be used. Furthermore, as another example of the urging member 80, it is possible to use an elastic body other than a coil spring, such as rubber or a leaf spring.

  Moreover, according to the said Example, although the fitting / removing member 90 was provided in the release member 70b or 70c as an example of the loose fitting means, the fitting / detaching member which consists of an elastic material as another example of a loose fitting means. A mode in which the fitting member 30 or the shaft cylinder 10 is fitted to and removed from the slide pieces 21a and 22a, and a fitting / detaching member made of an elastic material is provided in the slide pieces 21a and 22a. It is also possible to adopt a mode in which the member is fitted to and detached from the release member 70, the shaft tube 10, or the guide body 30.

1, 2, 3, 4: Multiple retractable writing instruments 21, 22: Slide writing core 50: Compression coil springs 21a, 22a: Slide piece 31a: Locked portion 32: Release member support portion 70: Release member 80: Energizing member 90: Fitting member (slow fitting means)

Claims (4)

A plurality of slide writing cores having a slide piece connected to the rear end side of the writing core are provided in the shaft cylinder, and the slide writing core that is selectively pushed causes the writing portion at the front end to protrude from the shaft cylinder. In the multiple haunting type writing instrument
A compression coil spring is provided so as to contract forward in the shaft cylinder, and a plurality of the slide writing cores are disposed in the circumferential direction along the inner periphery or outer periphery of one compression coil spring, and each of the slide writing cores is disposed. A plurality of retractable writing instruments abutted from the rear against the one compression coil spring,
A locked portion to which the slide piece in a state where the writing piece is moved forward with respect to the shaft tube is locked, a release member capable of moving back and forth with respect to the shaft tube on the shaft tube center side of the plurality of slide pieces, A biasing member that biases the release member rearward with respect to the shaft cylinder at the rear end side thereof,
When another slide piece is advanced in a state in which the slide piece that has advanced first is locked to the locked portion, the other slide piece that moves forward pushes the release member, and further, the release member A plurality of retractable writing instruments, wherein the slide piece that has advanced first is pushed away from the locked portion.   A release member support portion for inserting and supporting the release member so as to be able to advance and retreat is provided on the rear end side of the shaft tube, and the biasing member biases the release member backward with respect to the release member support portion. The multiple writing type writing instrument according to claim 1, wherein the writing tool is provided as described above.   3. The multi-rendering writing instrument according to claim 2, wherein the release member support portion is provided so as to come into contact with both the release member and the slide piece from the rear side.   4. A multiple intrusion type according to any one of claims 1 to 3, wherein a loose fitting means for removably fitting the slide piece in the initial position is provided on a rear end side in the shaft cylinder. Writing instrument.

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