JP2605499Y2 - Writing implement with seal - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a so-called cap in which the tips of a plurality of writing bodies can be alternately protruded and retracted at a tip end of a front shaft, and a seal can be protruded and retracted by opening and closing a lid from the rear end of the cap. It relates to a writing instrument with a seal of Les.

[0002]

2. Description of the Related Art Conventionally, as an example of a double-type writing instrument, as shown in Japanese Utility Model Application Laid-Open No. 64-3491 by the same applicant, a sliding groove for guiding two writing objects is provided on a front shaft. The front end has a guide tube fixed to the guide tube and a cam slope contacting a sliding piece attached to two writing bodies fitted to the guide tube, and the rear end forms a knock portion to the cap. Equipped with a cylindrical cam mounted so as to be movable in the axial direction and integrated in the circumferential direction, and by selectively rotating the cap with respect to the front shaft, two writing bodies can be selectively placed at the front end of the front shaft. There are multiple writing instruments that can appear and disappear.
Further, there is also known an apparatus in which a cap is moved back and forth with respect to a shaft cylinder to open and close a cover at an opening to make a seal appear and disappear.

[0003]

SUMMARY OF THE INVENTION The present invention is a double-type writing instrument in which at least one of the convenient capless seals is provided with a mechanical pencil, and has a seal at the rear end.
There is an inconvenience that an eraser cannot be provided.

[0004]

Means for Solving the Problems A writing implement with a seal of the present invention devised to solve the above-mentioned problems has the following configuration and features. And this fixed both an engaging portion for fitting the other party of the center pole of the resin-made front barrel and the resin to each other nonrotatably and retaining state respectively provided. Window-shaped generally inverted T connected through Habasema portion longitudinal grooves and circumferential grooves in the rear side of the middle shaft is bored, a guide tube integrated with the center pole, a plurality of guide provided in the guide tube A plurality of writing objects, each of which has at least one sharp pencil writing object with a sliding piece fixed to the rear end of the groove, are fitted to be movable back and forth via a return spring,
A protrusion is provided on the side surface of a cylindrical cam having a cam inclined surface displaced in the axial direction at the front end portion, and the protrusion is elastically fitted into the circumferential groove, so that the cylindrical cam is within a certain range with respect to the guide cylinder and the center shaft. And a stopper is provided so as to be rotatable and axially displaceable, an engaging portion is provided on the outer periphery of the rear of the cylindrical cam, and an eraser is fixed to the rear end hole. The seal cap has a seal attached to the rear end of the resin barrel, and the cap is mounted on the barrel so that it can move back and forth, and the lid that constantly covers the opening at the rear end is rotatable at the base on the side of the rear end of the cap. That it was pivotally supported. The inner hole of the shaft cylinder is provided with an engaging portion of the cylindrical cam and an engaging portion that is locked by elastic deformation in a rotating and retaining state, and a seal cap is detachably attached to a rear outer periphery of the cylindrical cam. . With the above configuration, when the cap is moved forward with respect to the front shaft or the center shaft, the cover is opened and the printed body of the seal is exposed so that the seal can be performed.When the cap is moved backward, the cover is closed. The seal is closed and the seal is shielded. In addition, when the seal cap is rotated with respect to the front shaft or the center shaft, the tip of each cursive writing penetrates selectively from the front shaft tip, and when selecting a mechanical pencil, the core can be extended by knocking the rear end of the seal cap. Becomes Further, the eraser can be used by removing the seal cap from the center shaft.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The writing implement with a seal according to the present invention includes a center shaft 1, a front shaft 3, a cylindrical cam 4, a pair of sliding pieces 5, 5 ｀, a mechanical pencil 6, a writing body 7 such as a ballpoint pen, and an eraser 3 integrally provided with a guide cylinder 2.
2. The seal 48, the shaft cylinder 39, the cap 34, the cover 35, and the like are main components. First, the center shaft 1 is made of resin, and as shown in FIG. 1, has an axially long guide groove 8 opened to the side surface from a substantially central portion to a rear end, and a similar guide groove 8 # on the opposite side surface. A guide tube 2 is provided. Guide tube 2
In the front half of each of the holes 8a, 8
tubular part 9 having a front end opened with a partition part 15 having
Is provided at the rear end of the cylindrical portion 9 and has a step portion 28.
A bulging engagement portion 12 is formed on the outer peripheral portion of the front side.

As shown in FIG. 2, a vertical groove 17 is formed on the rear side surface of the center shaft 1 through a narrow surface 17a through an inclined surface 17a.
Are connected to the circumferential groove 18 to form a substantially inverted T-shaped window. As will be described later, the protrusion 16 of the cylindrical cam 4 is
The projection 16 elastically expands the inclined surface 17a, passes through the narrow portion 17b, and enters the circumferential groove 18. The cylindrical cam 4 rotates within a range in which the protrusion 16 abuts on both circumferential walls of the circumferential groove 18, and the writing portion of the writing body 6 such as a mechanical pencil 6 or a ballpoint pen alternately protrudes and retracts from the front end of the front shaft. become. In addition, the circumferential groove 18 is made of the mechanical pencil 6
A wide groove 18a is provided so that the cylindrical cam 4 can be axially shifted at the position of the projection 16 when the writing member projects. When the writing object is stored or when the writing object 7 such as a ball-point pen projects, the cylindrical groove is formed. The circumferential groove 18 is formed so that the cam 4 cannot be shifted substantially.
A narrow groove 18b is provided between the rear wall 18c and the front wall 18d.

The front end of the tip shaft 3 is tapered, and has an inner step 24 at the tip of the inner hole. In the rear end hole, an engagement groove 11 is provided, which engages with an engagement portion 12 provided on the outer peripheral portion of the cylindrical portion 9 of the guide cylinder, and prevents the cylindrical portion 9 from slipping out and rotating. . In addition, the cylindrical portion 9 and the front shaft 3
Is detachably fixed by an appropriate force. (The actual opening 64-3
(Same as the configuration of the front shaft in JP 491)

The cylindrical cam 4 has a cylindrical shape, and has a cam slope 13 which is displaced circumferentially back and forth at a front end edge, and a notch 14 is formed at the foremost end of the cam slope 13. On the side surface of the cylindrical cam 4, there is formed a projection 16 which is inserted into the vertical groove 17 of the center shaft 1 and elastically fits into the peripheral groove 18 to rotate and prevent it from falling within a certain range (about 180 degrees). . A flange 29 is formed at the rear of the cylindrical cam 4, an engaging portion 30 formed of a convex portion and a concave portion is formed at a further rear shaft portion, and an eraser 32 is formed at a rear end hole of the shaft portion. Is attached.

The sliding piece 5 has a projection 19 on its outer surface.
The rear end surface of the projection 19 has a central portion protruding, and both sides thereof have cam slopes having substantially the same slope as the cam slope 13 of the cylindrical cam 4 described above. In addition, a hole 22 is provided to protrude and fit the rear of the core pipe 20 long. In addition, a cutout window opened to a hole 22 is formed on the outer side surface of the long projecting portion, and a rear end portion 21 that contacts the rear end of the core pipe 20 is provided. Also, the sliding piece 5 # has a projection 19 # like the sliding piece 5.
And a cam slope, and a locking portion 23 for fixing the rear end of the writing body 7 such as a ball-point pen is provided at the tip. Incidentally, the locking portion may be formed in a pipe shape and the rear end of the writing body may be fitted.

The mechanical pencil 6 has a built-in general chuck mechanism and is joined to the core pipe 20 via a joint 26 connected to the chuck mechanism at the rear end. The rear end hole of the core pipe 20 which is fitted and protrudes rearward of the sliding piece 5 is closed by a rear end portion 21 of the sliding piece 5. The leading of the lead is performed by moving the chuck by moving the sliding piece 5 in a state where the step 25 at the tip of the mechanical pencil 6 is in contact with the inner step 24 of the front shaft 3.

The seal cap 33 includes a cap 34, a lid 35, a shaft cylinder 39, and a lock device.
First, a spring 42 is provided between the cap 34 and the lid 35 on the base 36 provided at the rear end of the cap 34 near the opening, and the lid 35 is rotatably pinched by the fastening portion 41. The cover 35 is always urged in a direction to shield the opening. The cap 34 is provided on the outer peripheral portion of the barrel 39 so as to be able to move back and forth.
Locking device having an inwardly protruding engaging portion 45 at the front end and a button 43 at the rear end of the base portion 36 of the cap 34 opposed thereto. Is mounted so as to rotate appropriately at a substantially middle fastening portion 44 via a pin or the like. The locking device is fitted into a window 34 # provided in the cap 34, and a clip 38 is fixed to the base 36. The button 43 protrudes from a hole 47 formed in the clip 38 as appropriate, and
A spring 46 is provided between the inner portion of the button 3 and the button 4.
3 is always urged to the protruding side, and when the button 43 is pressed, the engaging portion 45 moves up and down. An engaging portion 37 formed of a convex portion and a concave portion which is detachably engaged with the engaging portion 30 of the cylindrical cam 4 in a rotatable and non-removable state is formed in an inner hole portion of the shaft cylinder 39. I have. Between the cap 34 and the shaft cylinder 39, apart from the locking device, there are provided a portion for abutting each other at the forward and backward positions and a portion for stopping rotation. (Not shown)

The seal 48 stores a printing body 52 made of a porous printing material having an infinite number of continuous air holes such as sponge rubber so as to absorb the ink, and stores the ink and supplies the ink to the printing body 52. Cover body 4 (not shown)
9 and fixed to the mounting table 51.

Next, a description will be given in assembling order. A pencil 6 and a writing pen 7 such as a ball-point pen are connected with respective sliding pieces 5 and 5 ｀ at the rear end, and each of the above-mentioned center axis guide cylinders 2 is connected. It is movably fitted in the guide grooves 8, 8 ′, and the front end face of each sliding piece 5, 5 ｀ and the partition 1 on the front of the guide grooves 8, 8 ｀.
5 is urged rearward by return springs 27 and 27 # interposed between the return springs. The cylindrical cam 4 is inserted into the rear end hole of the central shaft 1 so that the projection 16 is elastically fitted into the circumferential groove 18. Is done. When the mechanical pencil 6 is protruded, the cylindrical cam 4 can be shifted by the stroke necessary for centering the center shaft 1 with respect to the center shaft 1. The axis transition is made impossible. Since the sliding pieces 5, 5 'are always urged rearward by the return springs 27, 27', the cam slopes of the projections 19, 19 'are always kept in contact with the cam slope 13 of the cylindrical cam 4. ing. An eraser 32 is fixed to the rear end hole of the cylindrical cam 4.

The engaging portion 12 of the cylindrical portion 9 is elastically fitted into the engaging groove 11 of the front shaft 3 with the rear end surface of the front shaft 3 in contact with the front surface of the step portion 28 of the center shaft 1. As a result, the front shaft 3 and the center shaft 1 are fixed in a state where they are stopped from rotating and come off. The tip shaft 3 is detachable with an appropriate force. In this state, when the cylindrical cam 4 is rotated to one side with respect to the front shaft 3 or the center shaft 1, the sliding piece 5 is rotated.
Is notched 1 at the forefront end of the cam slope 13 of the cylindrical cam 4
4 is engaged with the projection 19 of the sliding piece 5 of the mechanical pencil writing body 6 so that the writing tip projects from the tip end of the front shaft. When the cylindrical cam 4 is rotated in the other direction with respect to the front shaft 3 or the center shaft 1, the sliding piece 5 is retracted, and the writing tip of the mechanical pencil 6 penetrates from the tip of the front shaft.前進 advances, and the writing tip of the writing body 7 such as the other ballpoint pen projects from the tip end of the front shaft.

The eraser 32 is fixed to the rear end hole of the cylindrical cam 4, the seal 48 is fixed to the rear end hole of the shaft cylinder 39, and the shaft cylinder 39 of the seal cap 33 is fitted to the rear outer periphery of the cylindrical cam 4. Be worn.

[0016]

When the seal cap 33 is rotated in one direction with respect to the front shaft 3 or the center shaft 1, the notch 14 provided at the tip of the cam slope 13 of the cylindrical cam 4 as shown in FIG. The writing tip is engaged with the sliding piece 5 and its writing tip projects from the tip end of the front shaft. At this time, the projection 16 of the cylindrical cam 4 is located at the wide groove 18a in the circumferential groove 18 of the center shaft 1. In this state, when the rear end of the seal cap 33 is knocked and the cylindrical cam 4 is axially moved, the operation is transmitted to the sliding piece 5, the core pipe 20, and the mechanical pencil 6, and the step 25 of the writing tip is moved. From a state in which the chuck comes into contact with the inner step portion 24 of the front shaft 3, the chuck is moved together with the joint 26 so that the core is extended. Also, the seal cap 33 is attached to the front shaft 3 or the center shaft 1.
When the is rotated to the other side, the mechanical pencil 6 is retracted, and instead the writing tip of the writing instrument 7 such as a ballpoint pen projects from the tip end of the front shaft.

Further, at the time of stamping, with the button 43 of the lock device being pressed, the seal cap 3 is attached to the front shaft 3 or the center shaft 1.
When the front part 3 is moved forward, the lid part 35 is supported by the fastening part 44 as a fulcrum.
The inner side surface of the seal body 48 expands while making contact with the corner 50 (the corner of the cover 49) of the seal 48 avoiding the print body 52, and the print body 52 is exposed from the opening of the cap 34. At this time, the engaging portion 45 of the locking device is separated from the locking groove 40 and located in the locking groove 40 '. In this state, the seal is applied, and the cap 34 is
Fixed to To store the print body 52 again, the cap 34 may be moved backward with respect to the front shaft 3 or the center shaft 1 while the button 43 is pressed.

[0018]

As described above, according to the present invention, the center shaft integrally provided with the leading shaft and the guide portion is made of a resin molded product, and the protrusion provided on the side surface of the cylindrical cam as in the embodiment is further provided. By elastically fitting into the peripheral groove formed in the rear, the number of parts is omitted, the structure is simplified, and assembling is facilitated and cost reduction is achieved. In addition, since the seal cap can be attached to and detached from the rear outer periphery of the cylindrical cam, a capless seal can be used, and an eraser can be used while the seal is provided at the rear end.

[Brief description of the drawings]

FIG. 1 is a longitudinal cross-sectional view of an entire main part showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing a locked state between a center shaft and a cylindrical cam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Middle shaft 2 Guide cylinder 3 Front shaft 4 Cylindrical cam 5 Sliding piece 5 ｀ Sliding piece 6 Pencil writing body 7 Writing body such as ballpoint pen 8 Guide groove 8 ｀ Guide groove 8a hole 8b hole 9 Tube part 10 Knock spring 11 Engage Groove 12 Engagement part 13 Cam slope 14 Notch 15 Partition part 16 Projection 17 Vertical groove 17a Inclined surface 17b Narrow part 18 Peripheral groove 18a Wide groove 18b Narrow groove 18c Rear wall 18d Front wall 19 Projection 19 ｀ Projection 20 Core pipe DESCRIPTION OF SYMBOLS 21 Rear end 22 Hole 23 Locking part 24 Inner step 25 Step 26 Joint 27 Return spring 27 ス プ リ ン グ Return spring 28 Step 29 Flange 29 ｀ Step 30 Engaging part 31 Eraser rubber holder 32 Eraser 33 Seal cap 34 Cap 34 ° Window 35 Lid 36 Base 37 Engagement 38 Clip 39 Shaft tube 40 Lock groove 4 `Locking groove 41 secured portion 42 the spring 43 button 44 secured portion 45 engaging portion 46 spring 47 hole 48 seal 49 covers 50 corner 51 mount 52 print body 53 decorative ring

Claims (2)

(57) [Scope of request for utility model registration] A plurality of guide cylinders integrated with a center shaft are provided by providing engaging portions for fitting the front end of the resin shaft and the center shaft of the resin in a non-rotatable and non-removable state. In the guide groove, at least one writing piece with the sliding piece fixed to the rear end is made of a mechanical pencil, and a plurality of writing pieces are provided with a return spring between the guide cylinder and the sliding piece, and each writing piece is moved backward. And a cylindrical cam having a cam inclined surface displaced in the axial direction provided circumferentially at the front end portion is rotatably and axially displaced relative to the guide cylinder or the central shaft. It is fixed so as to be able to move, an engagement part is provided on the rear outer periphery of the cylindrical cam, and an eraser is fixed to the rear end hole, while the seal cap is attached with a seal at the rear end of the resin shaft cylinder, A lid that can be moved back and forth to cover the opening at the rear end When the cap is moved forward with respect to the barrel, the inner surface of the lid contacts the corner of the seal avoiding the printed body when the cap is moved forward with respect to the barrel. The print body is exposed from the opening so as to be able to be stamped, and is engaged with the engagement portion of the cylindrical cam in the inner hole portion of the shaft cylinder by elastic deformation in a rotating and retaining state. The seal cap is detachably mounted on the outer periphery of the rear of the cylindrical cam, and the rotation of the seal cap with respect to the front shaft or the central shaft transmits the rotation to the cylindrical cam, and each sliding piece abuts on the cam slope. By moving back and forth alternately, the tip of each cursive writing can be selectively made to protrude from the tip of the tip shaft, and when selecting the mechanical pencil, knock the rear end of the seal cap to change the axis of the cylindrical cam so that the core can be extended. A writing implement with a seal that has been made. 2. A substantially inverted T-shaped window portion is formed in the rear side surface of the center shaft, in which a vertical groove and a peripheral groove are connected by a narrow portion, and a projection is provided on a side surface of the cylindrical cam. The cylindrical cam is elastically fitted into the circumferential groove through the groove, and the cylindrical cam is rotatable and axially displaceable in a certain range with respect to the guide cylinder and the central shaft, so that the cap is opened to the seal cylinder. 2. The writing instrument with a seal as claimed in claim 1, further comprising a lock device for fixing the writing device to the closed position.