JP6490987B2 - Slide knock type writing instrument - Google Patents

Description

  The present invention relates to a slide knock type writing instrument, and in particular, to an assembly of a knock member that causes a writing core to appear and retract.

  In a slide knock type multi-color / composite writing instrument, for example, as shown in Patent Documents 1 and 2, a knock member is provided in a cylindrical shaft, and a sliding member in which a writing core is detachably inserted at the front end An operation member assembled to the sliding member is widely used. The operating member is assembled to the sliding member via a slit-like opening provided on the side surface of the cylinder shaft.

  In Patent Document 1, both members are assembled by fitting a cylindrical or prismatic fitting pin provided in the operation member into a fitting hole provided in the sliding member in the radial direction of the cylinder shaft. ing. Moreover, in patent document 2, both members are assembled | attached by screwing the external thread provided in the operation member with the internal thread provided in the sliding member.

  However, in the assembly form of Patent Document 1, since the fitting stress is always applied between the fitting hole and the fitting pin, the fitting force becomes weak due to the creep phenomenon due to the change over time, and the writing core appears and disappears. There has been a problem that the operation member is detached from the sliding member due to an operation load applied in the axial direction during the operation or an impact between the knock member and the cylinder shaft during storage.

  Moreover, in the case of the assembly form of patent documents 1 and 2, since the fitting hole, the pin, the screw part, etc. provided in the knock member of the sliding member or the operation member are very small, Due to repetition of such loads and impacts, there has been a problem that the locking portions such as these pins and male screw portions are easily damaged.

Japanese Patent No. 3939196 JP 2003-11583 A

In the present invention, in view of the above-described situation, the assembling of the sliding member and the operating member constituting the knock member has a weak fitting force due to a creep phenomenon or the like due to a change with time, and the repeated load or impact applied at the time of appearing / storing. It is an object of the present invention to provide a slide knock type writing instrument having an assembly form that eliminates the problem of the resulting disengagement of the operating member and breakage of the fitting portion.

  According to the present invention, the above problem is solved by the following means.

(1) In the slide knock type writing instrument, a knock member for extending and retracting the writing core is provided in the cylindrical shaft and is slidable in the axial direction of the cylindrical shaft, and is assembled to the sliding member. In the state in which both the members are assembled, one member does not exert stress in the axial direction of the cylindrical shaft with respect to the other member. An engagement is provided on either one of the two members, and a locking portion protruding inward in the axial direction of the cylindrical shaft protrudes outward in the axial direction provided on the other member. A slide-knock type writing instrument characterized by being made by overcoming the pawl .
With such a configuration, in the state where the sliding member and the operation member are assembled, one member does not exert stress on the other member in the axial direction of the cylinder shaft. The creep phenomenon or the like due to the change does not occur, the fitting force is weakened due to this phenomenon, and the problem that the operation member comes off due to repeated loads and impacts when appearing and retracting can be solved.
Moreover, by setting it as such a structure, both the members of a sliding member and an operation member can be assembled | attached easily.

(2) In the slide knock type writing instrument, a knock member for extending and retracting the writing core is provided in the cylindrical shaft and is slidable in the axial direction of the cylindrical shaft, and is assembled to the sliding member. The operation member at the time of initial operation of at least one of the extension of the writing core from the cylinder shaft and the immersion into the cylinder shaft when the operation member is operated in the axial direction. A sliding knock type wherein the sliding member and the operating member are assembled so that only the sliding member slides in the axial direction and then the sliding member slides in the axial direction together with the operating member A writing instrument.
With such a configuration, in a state where the sliding member and the operation member are assembled, one member does not exert stress on the other member in the axial direction of the cylinder shaft. . For this reason, the same effect as the above item (1) is obtained.

(3) pre-SL (2) section, assembly of the sliding member and the operating member, wherein provided in one of the two members, the engaging portion which projects inwardly in the axial direction of the cylinder axis, This is done by getting over the axially projecting locking claw provided on the other member.
With such a configuration, both the sliding member and the operation member can be easily assembled.

(4) In any one of the items (1) to (3) , between the sliding member and the operation member in the axial direction of the cylinder shaft, in the assembly of the assembled sliding member and the operation member. Provide a gap.
By adopting such a configuration, when the operation member is operated in the axial direction, the operation is performed at the time of initial operation of at least one of feeding the writing core from the cylindrical shaft and immersing into the cylindrical shaft. Both members can be assembled so that only the member slides in the axial direction, and then the sliding member slides in the axial direction together with the operating member. That is, when the operating member is operated in the axial direction of the cylinder shaft, only the operating member slides during the initial operation, so that the gap disappears and the operating member comes into contact with the sliding member, thereby sliding. The member slides with the operation member.

(5) In any one of the items (1) to (4) , the sliding member is provided with a substantially T-shaped locking claw in a side view orthogonal to the axial direction of the cylinder shaft, and the locking claw The axial dimension is made larger than the width dimension, and an engaging hole for the operating member is provided in the operating member in the radial direction of the cylindrical shaft, and the axial direction is provided in the inserting hole. This is formed by providing an inwardly protruding locking portion, and the assembly of the two members is performed by the locking portion getting over the locking claw.
With this configuration, the locking claws of the sliding member, particularly the axial strength of the cylinder shaft, is improved, and the locking portion of the operating member is also in the insertion hole, so that the writing core can be moved in and out. While being able to prevent damage due to repeated loads and impacts as much as possible, both the sliding member and the operating member can be easily assembled.

(6) In any one of the items (1) to (5) , the sliding member and the operation member in the axial direction of the cylindrical shaft are assembled inside the assembled sliding member and the operation member. A gap is provided between them, and an elastic buffer member is disposed in the gap.
With such a configuration, it is possible to prevent rattling of the operation member 6 that may be caused by the presence of the gap. Further, when the elastic buffer member is provided, during the initial operation when the operation member 6 is operated in the axial direction of the cylindrical shaft 4, the elastic buffer member is elastically deformed by the sliding of the operation member 6, and then the slide member 5 slides together with the operation member 6 .

  The slide knock type writing instrument of the present invention has a weak fitting force due to a creep phenomenon due to a change with time in the assembly of the sliding member and the operation member constituting the knock member, and is caused by repeated loads and impacts when appearing and retracting. It is possible to prevent the operation member from being detached and the fitting portion from being damaged.

The slide knock type writing instrument of the core storing state which implemented this invention is shown, (a) is a perspective view, (b) is the bb sectional view taken on the line in (a). The slide knock type writing instrument of the centering state which implemented this invention is shown, (a) is a perspective view, (b) is the bb sectional view taken on the line in (a). It is an expanded sectional view of the principal part in FIG.1 (b). It is an expanded sectional view of the important section in Drawing 2 (b). It is an expansion perspective view of a sliding member. An operation member is shown, (a) is the expansion perspective view, (b) is a bb line sectional view in (a).

Hereinafter, the present invention will be described based on embodiments.
1A and 1B show a slide knock type writing instrument 1 in a state where a lead is stored according to the present invention. FIG. 1A is a perspective view, and FIG. 1B is a sectional view taken along line bb in FIG.
FIG. 2 shows a slide knock type writing instrument in a centering state in which the present invention is implemented, (a) is a perspective view, and (b) is a cross-sectional view taken along line bb in (a).
In the present embodiment, a multi-core writing instrument having a ballpoint pen lead and a mechanical pencil lead is shown.
FIG. 3 is an enlarged cross-sectional view of a main part in FIG. FIG. 4 is an enlarged cross-sectional view of the main part in FIG.

  In the present invention, the knock member 3 for projecting and retracting the writing core 2 is provided in the cylindrical shaft 4 and is slidable in the axial direction of the cylindrical shaft 4, and is assembled to the sliding member 5. And an operating member 6.

  FIG. 5 is an enlarged perspective view of the sliding member 5, FIG. 6 shows the operation member 6, (a) is an enlarged perspective view thereof, and (b) is a cross-sectional view taken along line bb in (a).

As shown in FIG. 5, the sliding member 5 is provided with a writing core mounting portion 5 b for detachably mounting the writing core 2 at the front end of the sliding member main body 5 a that is long in the axial direction of the cylindrical shaft 4. In the vicinity of the rear end portion of the sliding member main body 5a, a substantially T-shaped locking claw 5c is provided on the outer side of the cylindrical shaft 4 in a side view orthogonal to the axial direction of the cylindrical shaft 4.
The locking claw 5c has a front claw portion 5d and a rear claw portion 5e. The locking claw 5c has a substantially plate shape, and the dimension of the cylindrical shaft 4 in the axial direction is larger than the dimension in the width direction. By adopting such a configuration, the strength in the axial direction of the locking claw 5c is improved, and it is possible to prevent as much as possible damage caused by repeated loads and impacts when the writing core 2 is projected and retracted. it can.

  As shown in FIG. 6, the operation member 6 is made of a member whose length is slightly larger than the locking claw 5 c of the sliding member 5, and is provided with an insertion hole 6 a penetrating in the radial direction of the cylindrical shaft 4. . The locking portions 6b and 6c of the operating member 6 are formed by providing locking portions 6b and 6c protruding inward in the axial direction of the cylindrical shaft 4 in the insertion hole 6a.

  The sliding member 5 and the operating member 6 are assembled by the locking portions 6 b and 6 c provided on the operating member 6 getting over the locking claws 5 c provided on the sliding member 5. That is, as shown by a two-dot chain line in FIG. 3, first, the rear locking portion 6c of the operating member 6 is engaged with the rear claw portion 5e of the sliding member 5, and then the front portion of the operating member 6 is indicated by the arrow F. The engaging portions 6b and 6c provided on the operation member 6 are engaged with the front claw portion 5d of the sliding member 5 by pressing in the direction shown in FIG. The front claw portion 5d and the rear claw portion 5e provided on the sliding member 5 can be overcome. By doing in this way, both the sliding member 5 and the operation member 6 can be assembled | attached easily.

  In general, the operating member 6 is moved from the outside through an opening 7 that is long in the axial direction provided at the rear portion of the cylindrical surface of the cylindrical shaft 4 with respect to the sliding member 5 previously disposed in the cylindrical shaft 4. The knock member 3 is configured by assembling.

  As shown in FIG. 3, the assembled knock member 3 is usually formed between the sliding member 5 and the operating member 6 in the axial direction of the cylindrical shaft 4 in the assembly of the sliding member 5 and the operating member 6. It is designed so that gaps L1, L2, L3, and L4 can exist between them. In FIG. 4, the gaps L1, L2, and L4 exist, but the gap L3 does not exist. In other words, it is only necessary that the operation member 6 and the sliding member 5 are capable of relative movement during the initial operation when the operation member 6 is operated in the axial direction of the cylindrical shaft 4. Specifically, when the operation member 6 is operated in the axial direction of the cylinder shaft 4, the operation is performed at the time of initial operation of at least one of the extension of the writing core 2 from the cylinder shaft 4 and the immersion into the cylinder shaft 4. Only the member 6 slides in the axial direction, and then the operating member 6 comes into contact with the sliding member 5 inside the assembly so that the sliding member 5 slides together with the operating member 6. The operation member 6 should just be assembled | attached.

  By adopting such a configuration, in the state where both the sliding member 5 and the operating member 6 are assembled, one member mutually applies stress in the axial direction of the cylindrical shaft 4 to the other member. It will not be affected. Since one member does not exert stress on the other member in this way, there is no occurrence of a creep phenomenon or the like due to a change with time, resulting in a weak fitting force, which takes place when appearing and retracting. The problem that the operation member 6 comes off due to repeated load and impact can be solved.

  As still another embodiment of the present invention, there is a gap between the sliding member 5 and the operating member 6 in the axial direction of the cylindrical shaft 4 inside the assembled sliding member 5 and operating member 6. It is also possible to provide an elastic buffer member in the gap.

  With such a configuration, it is possible to prevent rattling of the operation member 6 that may be caused by the presence of the gap. Further, when the elastic buffer member is provided, during the initial operation when the operation member 6 is operated in the axial direction of the cylindrical shaft 4, the elastic buffer member is elastically deformed by the sliding of the operation member 6, and then the slide member 5 slides together with the operation member 6.

  Further, as an example, the case where the sliding member is provided with the locking claw and the operation member is provided with the locking portion has been described. On the contrary, the sliding member is provided with the locking portion and the operation member is provided with the locking claw. May be. For example, an insertion hole may be provided in the sliding member, a locking portion that protrudes inward in the axial direction of the cylinder shaft may be provided in the insertion hole, and an outward locking claw may be provided in the operation member.

DESCRIPTION OF SYMBOLS 1 Slide knock type writing instrument 2 Writing core 3 Knock member 4 Cylindrical shaft 5 Sliding member 5a Sliding member main body 5b Writing core mounting part 5c Locking claw 5d Front claw part 5e Rear claw part 6 Operation member 6a Insertion hole 6b Locking Part (front locking part)
6c Locking part (rear locking part)
7 opening

Claims (6)

In a sliding knock type writing instrument, a knocking member for extending and retracting the writing core is provided in the cylindrical shaft and can slide in the axial direction of the cylindrical shaft, and an operating member assembled to the sliding member In a state in which both the members are assembled, one member does not exert stress in the axial direction of the cylindrical shaft with respect to the other member ,
An assembly of the two members is provided on either one of the two members, and a locking portion protruding inward in the axial direction of the cylindrical shaft is provided outwardly in the axial direction provided on the other member. A slide knock type writing instrument characterized in that it is made by overcoming the locking claw protruding to the top .   In a sliding knock type writing instrument, a knocking member for extending and retracting the writing core is provided in the cylindrical shaft and can slide in the axial direction of the cylindrical shaft, and an operating member assembled to the sliding member When the operation member is operated in the axial direction, only the operation member has an axis line at the time of initial operation of at least one of drawing out the writing core from the cylindrical shaft and immersing into the cylindrical shaft. A sliding knock type writing instrument, wherein the sliding member and the operating member are assembled so that the sliding member slides in the axial direction together with the operating member. The locking member, which is provided on either one of the two members, has an engaging portion that protrudes inward in the axial direction of the cylindrical shaft, and is attached to the other member in the axial direction. claim 2 Symbol mounting slide knock-type writing instrument were to be done by overcoming the locking claw projecting outward. The slide according to any one of claims 1 to 3, wherein a gap is provided between the sliding member and the operation member in an axial direction of a cylindrical shaft inside the assembled sliding member and operation member. Knock-type writing instrument. The sliding member is provided with a substantially T-shaped locking claw in a side view orthogonal to the axial direction of the cylinder shaft, the axial dimension of the locking claw is made larger than the width dimension, and the operating member The engaging part is formed by providing an insertion hole penetrating in the radial direction of the cylindrical shaft in the operating member, and providing an engaging part protruding inward in the axial direction in the insertion hole. The slide knock type writing instrument according to any one of claims 1 to 4 , wherein the assembly of the member is performed by the locking portion climbing over the locking claw. In the assembled assembly of the sliding member and the operating member, a gap is provided between the sliding member and the operating member in the axial direction of the cylinder shaft, and an elastic buffer member is disposed in the gap. Item 6. A slide knock type writing instrument according to any one of Items 1 to 5 .

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