JP3128512U - Writing instrument - Google Patents

Abstract

[PROBLEMS] To provide a writing instrument capable of reliably moving a decorative body at the top of a writing instrument in accordance with the appearance of a core body with a very simple structure with a small number of parts.
In a knock-type writing instrument having a decorative body attached to the top of a writing instrument main body, the decorative body comprises a fixed part for fixing the decorative body to the writing instrument main body and a separate movable part, and the writing instrument main body In the normal state, a drive mechanism is provided that includes a rod that is inserted into the fixed portion in the normal state and moves upward during the centering operation by the operation member, and between the upper end of the rod and the inner wall of the movable portion, They are directly connected by an elastic member that is bendable in a direction that intersects the axial direction.
[Selection] Figure 8

Description

  The present invention relates to an improvement of a writing instrument, particularly a knock type writing instrument having a movable decorative body at the top.

  Ballpoint pens and mechanical pencils with a core that is retracted in the normal state and the core protrudes when the button on the side of the shaft is slid are widely used. There was envy that was not enough as a means of tasting.

Therefore, conventionally, a decorative body imitating the shape of a character or the like is attached to the top of the writing instrument as in prior arts 1 to 3, and a part of the decorative body is moved in accordance with the operation of the operation member for protruding the core body. Writing instruments that make it possible to do this have been proposed.

However, in the prior art 1 and the prior art 2, a crank plate-like support member connected to the head as a movable decorative body is inserted into the fixed decorative body, and this is supported rotatably by a lateral support shaft. An eccentric part (lever member) is provided in a part of the member, and this eccentric part is connected to a relay member connected to the core body by a thread material, or a repulsive magnet is attached to the top part and the eccentric part of the relay member. As a result, the number of parts is large, the structure is complicated, the assembly is troublesome, and the manufacturing cost is high. Further, since the vertical groove for swinging the support member is formed in the fixed decorative body, the appearance is bad, and there is a possibility that dust and dust may enter and make the movement worse.

Prior art 3 uses a standing doll as a decorative body, makes the portion from the torso of the doll a movable body with respect to the leg, and connects the sliding piece with an operating thread that passes through the leg of the movable body. In addition, when the operating member is operated, the sliding piece is lifted to loosen the operating thread, loosen the joint, and perform a bowing operation.
However, this prior art also has a problem in that the number of members is large, and it is necessary to incorporate a thin operation thread into a doll and connect it to a sliding body, so that the structure is complicated, time-consuming to manufacture, and cost increases.
Utility model registration No. 2508153 Japanese Utility Model Publication No. 7-18888 Utility model registration No. 3025184

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to ensure the decorative body at the top of the writing instrument according to the appearance of the core body with a very simple structure with a small number of parts. It is to provide a writing instrument that can be moved to.

  In order to achieve the above object, the present invention is a type in which a part of the decorative body is moved when a decorative body is attached to the top of the writing instrument body and the core body is protruded by operating the operation member on the side of the writing instrument body. In the writing instrument, the decorative body includes a fixed part that is fixed to the writing tool main body and a separate movable part, and the upper part is inserted into the fixed part in the normal state in the writing tool main body. A drive mechanism including a rod that moves upward during centering operation is provided, and the upper end of the rod and the inner wall of the movable body are directly connected by an elastic member that is bent in a direction intersecting the fixed body axis direction. It is characterized by that.

When the operation member is not operated, the movable part is placed in a predetermined posture with respect to the fixed part. However, when the rod rises as the operation member is operated, the distance between the inner walls of the movable part is short. Therefore, the elastic member is compressed while being bent, and the movable part is pushed and moved by the pressing force from the back, and the posture changes such as bowing or curling the neck. Therefore, it can be set as an interesting writing instrument.
Moreover, the mechanism for moving the movable part can directly connect the moving rod and the movable part with an elastic member bent in a direction intersecting the axial direction of the fixed part, and can change the pressing direction by the bending action of the elastic member itself. Therefore, the number of parts is minimal, the structure is extremely simple, easy to assemble and can be manufactured at low cost, and the structure is simple, so there are few failures and reliable operation is possible.

The drive mechanism includes a rod having a lower end portion of an elastic member attached to the upper end, a sliding member connected to the upper portion of the core member and connected to the operating member, a rack shaft extending upward from the sliding member, A pinion that meshes with the rack shaft and a driven rack shaft that extends downward from the rod so as to face the rack shaft and meshes with the pinion are provided. The rod is connected to the driven rack shaft at the upper end.
According to this, the movable portion can be held in a stable normal state when the operation member is not operated by the locking action by the engagement between the pinion and the rack, and when the operation member is operated, the engagement between the pinion and the rack is achieved. Thus, the elastic member can be reliably compressed and the movable part can be pushed and moved.

The fixed part has a cylindrical part extending into the movable part in the upper part, and the cylindrical part has a passage through which the rod moves, and is externally provided with a high height for defining the moving direction of the movable part. Steps of different heights have protrusions that are located at approximately 180 degrees symmetrical positions.
According to this, not only can the movable part be prevented from coming off by the projection, but also the direction of movement is determined by the step part, the lower step part is hinged, and the higher step part is the maximum of the movable part. Since it exerts the effect of regulating the movement angle, it can be moved to a posture in which it bows and the neck is bent at a predetermined angle without difficulty.
The elastic member is either a coil spring or a leaf spring.
According to this, it is possible to provide bendability in a direction perpendicular to the axial direction with an inexpensive component.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 to 6 show an embodiment of a writing instrument according to the present invention. In FIG. 1, A is a writing instrument body, and B is a decoration on the top of the writing instrument body A. FIG.
The writing instrument main body A has a cylindrical shaft body 1 and a cap 2 that covers the upper end portion of the cylindrical shaft body 1 and also serves as an attachment base for the decorative body.

  The decorative body B includes a hollow fixed portion B1 whose lower surface is fixed to the cap 2 by adhesion or the like, and a movable portion that is hollow and has a lower opening and is substantially continuous with the fixed portion B1. It consists of body B2. In this example, the decorative body B as a whole has a character shape, the fixed part B1 imitates the leg and the trunk above it, and the movable part B2 imitates the head, nodding. It is designed to move forward, similar to bowing.

As shown in FIGS. 5 and 6, the fixed part B1 has a cylindrical part 15 extending in the movable part B2 at the upper part, and on the outer side of the cylindrical part 15, an enlarged ridge A projection 16 is provided. The protrusion 16 has step portions 160 and 161 having different heights at a 180-degree symmetrical position.
The lower side stepped portion 160 is at a position corresponding to the front side of the movable portion B2, and the higher level stepped portion 161 is at a position corresponding to the rear side of the movable portion B2.
The movable part B2 has a split structure, and notches 17 and 17 are formed on the lower surfaces of the divided parts B21 and B22 so as to be joined to the cylindrical part 15 below the protrusion 16.

2 and 3 show a cross section of the writing instrument, 3 is a core of a ball-point pen inserted into the shaft 1, and 4 is a cylindrical sliding member in which the upper part of the core 3 is fitted and connected. Including this, the mechanism C for operating the decorative body B and the appearance of the core body is configured.
The operating mechanism C includes an operation shaft 5 having a base fixed to a cylindrical sliding member 4 and extending upward, and the operation shaft 5 has a vertically long hole formed on one side of the shaft body 1. The button-like operation member 8 inserted through the unit 7 is coupled, and when the operation member 8 is pinched and lowered, the sliding member 4 and the core body 3 are lowered in the shaft body, and the distal end portion of the core body 3 is moved. It protrudes from the shaft body tip opening.

  The operating mechanism C further slides at a position separated from the operation shaft 5 in order to move in the opposite direction (upward) in synchronization with the projecting movement of the core body 3 to push the movable part B2. A rack shaft 6 having a base fixed to the moving member 4 and extending upward, a pinion 9 rotatably supported by a horizontal shaft 90 in the upper region within the shaft body 1, and the rack sandwiching the pinion 9 A driven rack shaft 10 that hangs down at a position facing the shaft 6 is provided, and the rack shaft 6 and the driven rack shaft 10 have tooth portions 60 and 100 that mesh with the pinion 9 at 180 ° symmetrical positions, respectively.

As shown in FIG. 4, the upper end of the driven rack shaft 10 is connected to a seat portion 11 located in the upper region of the shaft body 1, and the seat portion 11 has a hole 20 provided at the top end of the cap 2. The rod 12 having a length reaching the fixed part B1 is protruded even when the movable part B2 is in a normal posture (in this example, standing upright in this example). Yes.
A pin-shaped mounting portion 120 having a reduced diameter is formed at the top end of the rod 12, and a lower end portion 130 of the elastic member 13 for pressing that is bendable in a direction perpendicular to the axial direction is connected to the mounting portion 120. Yes. The pressing elastic member 13 extends through the cylindrical portion 15 of the fixed portion B1 and into the movable portion B2.

On the other hand, a pin-shaped attachment 18 is provided on a portion of the inner wall of the movable part B2 that is particularly in the direction in which the movable part B2 is to be moved (in this example, the front part corresponding to the front side of the head). The elastic member 13 is bent by its bendability and is supported so that both ends do not come out between the mounting portions 120 and 18.
In this example, the elastic member 13 is a coil spring (including a bellows tube) having a relatively small diameter substantially the same as that of the rod 12, but may be a leaf spring instead.

In addition, as a means for retracting the core body 3 when the protrusion of the core body by the operation member 8 is released, a spring 19 is interposed in the lower portion of the core body 3 in the same manner as a known device.

The usage and operation of the present invention will be described. Normally, the operating member 8 is at the upper end position of the longitudinally long hole 7 and the sliding member 4 is at the upper limit position as shown in FIGS. Body 3 is retracted. At this time, the rack shaft 6 is in the raised position and meshes with the pinion 9 in this state, so that the driven rack shaft 10 in the position opposite to the pinion 9 is held in the lowered position.
Since the driven rack shaft 10 is at the lower limit, the elastic member 13 is hardly compressed, and the tip of the rod 12 is held at an intermediate level of the fixed part B1. Therefore, the movable part B2 is in an upright posture substantially coaxial with the fixed part B1 as shown in FIGS.

When the operating member 8 is pinched and slid downward to use the writing instrument, the sliding member 4 descends in the shaft body, so that the core body 3 held by the sliding member 4 descends and the tip is the shaft body 1. Protrudes from the tip of the.
When the sliding member 4 is lowered, the rack shaft 6 is lowered, whereby the pinion 9 engaged with the rack 60 of the rack shaft 6 is rotated, for example, clockwise. As a result, a push-up force is transmitted to the rack portion 100 of the driven rack shaft 10 that is symmetrical with the rack shaft 6 through the pinion 9, so that the rod 12 integrated with the driven rack shaft 10 as shown in FIG. Rises to near the upper end in the cylindrical portion 15 at the upper portion of the fixed portion B1.

As a result, the distance between the tip of the rod 12 and the inner surface of the movable part (the root of the mounting part 18) is shortened, so that the elastic member 13 that is directly connected between the tip of the rod 12 and the inner surface of the movable part B2 is bent. The repulsive force of the compressed elastic member 13 that has been compressed becomes power for moving the movable part B2.
The elastic member 13 is not a straight line but is bent and connected to the mounting portion 18 on the front side of the movable portion B2, and the cylindrical portion 15 on the upper portion of the fixed portion B1 has a hook-like protrusion 16. Since the protrusion 16 is provided with step portions 160 and 161 which are low with respect to the front side of the movable part B2 and relatively high with respect to the rear front side of the movable part B2, the pressing force of the elastic member 13 is reduced. When acted, the movable part B2 is tilted with the lower stepped part 160 as a hinge, and the elastic member 13 follows by bendability. Therefore, the movable part B2 is moved from an upright state as if nodding or bowing as shown in FIG. 1 (b) or FIG. Therefore, an interesting form change can be obtained.

Thereafter, when the operating member 8 is moved, the sliding member 4 is raised, the core 3 is retracted and the rack shaft 6 is raised, and the driven rack shaft 10 is lowered by the rotation of the pinion 9, so that the rod 12 is lowered and elastic. Since the compression of the member 13 is released, the movable part B2 is returned from the forward inclined state to the original upright state.

In the present invention, the movable portion B2 is moved from the normal posture to the movable posture by using the ascending function by the meshing of the pair of racks and the pinion, the locking action, and the bendability of the elastic member 13, and the state is maintained. The structure is simple and the number of parts can be minimized.
Further, the movable part B2 is divided into two parts at the front and rear half parts, the elastic member 13 is bent with the rod 12 protruding into the fixed part B1, and the tip is attached to the inner surface of the movable part B2. Since it only needs to be attached to 18, it is very easy to assemble.

  In addition, this invention is not limited to the case where the operation | movement of movable part B2 bows, It is various according only to where the front end connection position (attachment part position) of the elastic member 13 with respect to movable part B2 is made. Can be created. For example, if it is attached to the inner surface of the rear part of the movable part B2 and the relationship between the two steps of the protrusion 16 of the fixed part B2 is reversed, an operation that turns over is exhibited, and similarly the movable part B2 If it is applied to the side of the head, it will behave like a neck.

(A) is a perspective view which shows the writing instrument by this invention in the normal state which does not put out a core, (b) is a perspective view of the state which put out the core. It is a vertical front view in the state of Fig.1 (a). It is a vertical side view in the state of Fig.1 (a). It is a perspective view of the action | operation mechanism in this invention. It is a step view which shows the engagement of the elastic member and movable part in this invention in an exploded state. It is a perspective view which shows the engagement of the elastic member and movable part in this invention in an exploded state. It is a partial longitudinal cross-section of the normal state which does not lead a core. It is a partial longitudinal cross-section which shows a motion of each part when taking out a core.

Explanation of symbols

A Writing instrument body
B decorative body B1 fixed part B2 movable part C actuating mechanism 1 shaft body 3 core body 4 cylindrical sliding member 6 rack shaft 8 operation member 9 pinion 10 driven rack shaft 12 rod 13 elastic member 15 cylindrical portion 16 protrusion 160 161 steps

Claims (4)

  In a writing instrument of the type in which a part of the decorative body is moved when a decorative body is attached to the top of the writing instrument main body and the core body is protruded by operating the operation member on the side of the writing instrument main body, the decorative body is attached to the writing instrument main body. A fixed part that is fixed, and a movable part that is separate from the fixed part, and a rod that is inserted into the fixed part in the normal state in the writing instrument body and that moves upward during the centering operation by the operating member. A writing instrument comprising: a drive mechanism including: an upper end of the rod and an inner wall of the movable part directly connected by an elastic member bent in a direction intersecting an axial direction of the fixed part.   The drive mechanism includes a rod having a lower end portion of an elastic member attached to the upper end, a sliding member connected to the upper portion of the core member and connected to the operating member, a rack shaft extending upward from the sliding member, A pinion that meshes with a rack shaft, and a driven rack shaft that extends downward from the rod so as to face the rack shaft and meshes with the pinion, and the rod is connected to the upper end of the driven rack shaft. The writing instrument according to 1.   The fixed part has a cylindrical part extending into the movable part in the upper part, and the cylindrical part has a passage through which the rod moves, and is externally provided to define the moving direction of the movable part. The writing instrument according to claim 1 or 2, wherein the step portions having different heights have protrusions that are located at approximately 180 degrees symmetrical positions.   4. The writing instrument according to claim 1, wherein the pressing elastic member is one of a coil spring and a leaf spring.

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