JP2021104628A - Retractable mechanism - Google Patents

Abstract

To provide a retractable mechanism capable of protruding and retracting the tip member without the user having to change hands.SOLUTION: A retractable mechanism 20 includes: a barrel 30 having a central axis A extending in the longitudinal direction and an opening 33 at the front end in the longitudinal direction; a plurality of retractable members 40 and 50; a rotating member 60 that rotates around the central axis A so that the tips of the retractable members 40 and 50 protrude and retract in order from the opening 33; and a heavy body 70 that rotates the rotating member 60 around the central axis A by moving back and forth.SELECTED DRAWING: Figure 1

Description

The present invention relates to a haunting mechanism.

It has a plurality of writing nibs corresponding to each color, and it is possible to selectively project one of the plurality of writing nibs from the opening at the front end of the barrel by knocking the user. Knock-type writing tools are known. Patent Document 1 discloses a writing instrument including a shaft cylinder and two ballpoint pen refills that are slidably housed in the shaft cylinder in the axial direction. In this writing tool, a knock member is inserted and fixed to the rear end of the ballpoint pen refill, and the ballpoint pen refill and the knock member are urged toward the rear end by a coil spring. When the user moves the knock member in the tip direction against the urging force of the coil spring with a finger, the ballpoint pen refill moves in the tip direction, and the pen tip of the ballpoint pen refill protrudes to the outside from the tip hole.

JP-A-2018-187828

In the conventional knock-type writing tool, in order to make the tip member such as the pen tip appear and disappear, it is necessary for the user to change the writing tool and operate the knock member, which is troublesome. Therefore, there has been a demand for an infestation mechanism capable of infesting the tip member without the user having to change hands.

The present invention has been made in consideration of the above points, and an object of the present invention is to provide an infestation mechanism capable of infesting a tip member without changing hands by a user.

The haunting mechanism according to the present invention is
A barrel having a central axis extending in the longitudinal direction and an opening at the front end in the longitudinal direction,
With multiple haunting members
A rotating member that causes the tip of each infestation member to appear and disappear in order from the opening by rotating around the central axis.
It includes a heavy body that rotates the rotating member around the central axis by moving back and forth.

In the haunting mechanism according to the present invention
The rotating member has a forward inclined surface that is inclined in the axial direction and is inclined forward in the circumferential direction.
The heavy body has a rear inclined surface that is inclined with respect to the axial direction and inclined to the rear side with respect to the circumferential direction.
The rotating member may rotate by moving the rear inclined surface rearward and pressing the front inclined surface.

In the haunting mechanism according to the present invention
The rotating member has a first cam groove on the outer surface and has a first cam groove.
The infestation member may have a first engaging portion that engages with the first cam groove.

In the haunting mechanism according to the present invention
The first cam groove communicates with a first portion extending in an axial direction and a circumferential direction so as to move forward toward one side in the circumferential direction, and communicates with the first portion and is connected to one side in the circumferential direction. Includes a second portion that extends inclining in the axial and circumferential directions so as to move backward toward
The first portion and the second portion may be arranged alternately in the circumferential direction.

In the haunting mechanism according to the present invention
A fixed cam member whose movement in the circumferential direction and the axial direction is restricted with respect to the barrel is further provided.
The fixed cam member has a plurality of second cam grooves arranged in the circumferential direction on the inner surface.
The heavy body may have a second engaging portion that engages with the second cam groove.

In the haunting mechanism according to the present invention
The haunting member may include a writing tip member.

In the haunting mechanism according to the present invention
The haunting member may include a tool tip member.

In the haunting mechanism according to the present invention
The haunting member may include a cutlery tip member.

According to the present invention, it is possible to provide an infestation mechanism capable of infesting the tip member without the user having to change hands.

FIG. 1 is a diagram for explaining one embodiment according to the present invention, and is a vertical cross-sectional view showing an example of a writing instrument having a haunting mechanism. FIG. 2 is an exploded perspective view of the writing instrument of FIG. FIG. 3A is a diagram illustrating an operation for rotating a rotating member included in the infestation mechanism. FIG. 3B is a diagram illustrating an operation for rotating a rotating member included in the infestation mechanism. FIG. 3C is a diagram illustrating an operation for rotating a rotating member included in the infestation mechanism. FIG. 3D is a diagram illustrating an operation for rotating a rotating member included in the infestation mechanism. FIG. 3E is a diagram illustrating an operation for rotating a rotating member included in the haunting mechanism. FIG. 4 is a diagram corresponding to the IV-IV line of FIG. 3A. FIG. 5A is a diagram for explaining the infestation operation of the infestation member, and is a diagram showing the positional relationship between the first cam groove of the rotating member and the first engaging portion of the infestation member. FIG. 5B is a diagram for explaining the infestation operation of the infestation member, and is a diagram showing the positional relationship between the first cam groove of the rotating member and the first engaging portion of the infestation member. FIG. 5C is a diagram for explaining the infestation operation of the infestation member, and is a diagram showing the positional relationship between the first cam groove of the rotating member and the first engaging portion of the infestation member. FIG. 5D is a diagram for explaining the infestation operation of the infestation member, and is a diagram showing the positional relationship between the first cam groove of the rotating member and the first engaging portion of the infestation member.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, the scale, aspect ratio, etc. are appropriately changed from those of the actual product and exaggerated for the convenience of illustration and comprehension.

In addition, as used in the present specification, the terms such as "parallel", "orthogonal", and "same" and the values of length and angle that specify the shape and geometric conditions and their degrees are strictly used. Without being bound by meaning, we will interpret it including the range in which similar functions can be expected.

In the present embodiment, an example in which the infestation mechanism 20 is incorporated in the writing tool 10 will be described, but the present invention is not limited to this, and the infestation mechanism 20 can be applied to other devices for infesting a plurality of infestation members. In the present specification, the direction in which the central axis A of the writing tool 10 extends (longitudinal direction, vertical direction in the longitudinal sectional view) is the axial direction da, the direction orthogonal to the axial direction is the radial direction dr, and the circumference around the central axis A. The direction along the line is defined as the circumferential direction dc. Further, along the axial direction da, the side close to the writing surface such as a paper surface is the front side when writing, and the side away from the writing surface is the rear side. That is, the pen tip side is the front side, and the side opposite to the pen tip is the rear side. Along with this, the direction parallel to the axial direction da may be referred to as the front-rear direction.

FIG. 1 is a view for explaining one embodiment according to the present invention, and is a vertical cross-sectional view showing an example of a writing tool 10 having a haunting mechanism 20, and FIG. 2 is an exploded perspective view of the writing tool 10 of FIG. It is a figure. The writing tool 10 includes a haunting mechanism 20. The infestation mechanism 20 includes a barrel 30, a first infestation member 40, a second infestation member 50, a rotating member 60, and a heavy body 70. The haunting mechanism 20 of the present embodiment further includes a fixed cam member 80.

The infestation mechanism 20 is a mechanism having a function of infesting the tips of the infestation members 40 and 50 from the opening 33 at the front end of the barrel 30. In particular, the infestation mechanism 20 has a function of infesting the tip of any of the plurality of infestation members 40 and 50 from the opening 33. In the present embodiment, when the user shakes the infestation mechanism 20 (writing tool 10) in the front-rear direction, the heavy body 70 moves back and forth, and the protrusion and immersion of the infestation members 40 and 50 are switched accordingly. .. Therefore, it is possible for the user to infest the infestation members 40 and 50 without having to change the infestation mechanism 20 (writing tool 10).

The shaft cylinder 30 is a member that accommodates each component that constitutes the infestation mechanism 20. In the present embodiment, the barrel 30 accommodates the first infestation member 40, the second infestation member 50, the rotating member 60, the heavy body 70, and the fixed cam member 80. The barrel 30 has a central axis A extending in the longitudinal direction and has an opening 33 at the front end in the longitudinal direction. The opening 33 has a shape and dimensions through which the tips of the infestation members 40 and 50 can pass. The axle tube 30 includes a front shaft 32, a rear shaft 34, and a cap 36. In the example shown in FIG. 1, the opening 33 is provided at the front end of the front shaft 32. A female screw portion is formed on the inner surface of the rear end of the front shaft 32, and the female screw portion is screwed with the male screw portion formed on the outer surface of the front end of the rear shaft 34, so that the front shaft 32 is rearward. It is attached to the shaft 34. The cap 36 is a component that closes the rear end of the rear shaft 34. A female threaded portion is formed on the inner surface of the front end of the cap 36, and the cap 36 is screwed with the male threaded portion formed on the outer surface of the rear end of the rear shaft 34 so that the cap 36 is formed on the rear shaft 34. Attached to. A slit 35 extending in the axial direction da is formed at the rear portion of the rear shaft 34. The operation units 46b and 56b, which will be described later, of the infestation members 40 and 50 can move in the slit 35 along the axial direction da.

The infestation members 40 and 50 are members configured to be able to move in the axial direction da as the rotating member 60 rotates. The first infestation member 40 includes a first tip member 42, a first intermediate member 44, and a first slide member 46. Further, the second infestation member 50 includes a second tip member 52, a second intermediate member 54, and a second slide member 56. In FIG. 1, the tip of the first infestation member 40 (pen tip 42a) protrudes forward from the opening 33 at the front end of the barrel 30, and the tip of the second hoisting member 50 (pen tip 52a) is in the barrel 30. The writing tool 10 is shown in a state of being immersed behind the opening 33 at the front end of the pen.

The tip members 42 and 52 are members that, when the infestation members 40 and 50 move forward, have their tips projecting forward from the opening 33 of the barrel 30 to exert a desired function. In the writing tool 10 of the present embodiment, the tip members 42 and 52 are refills of a ballpoint pen. Therefore, the tips of the tip members 42 and 52 form the pen tips 42a and 52a of the ballpoint pen. The first tip member 42 and the second tip member 52 may contain inks having different colors from each other. In this case, the writing instrument 10 functions as a so-called multicolor ballpoint pen capable of writing with inks having different colors. However, the tip members 42 and 52 are not limited to the refill of the ballpoint pen. The tip members 42 and 52 may be members including a pen tip for other writing tools. Further, the tip members 42 and 52 are not limited to members including a pen tip for a writing tool. For example, the tip members 42 and 52 may be tool tip members. Examples of the tool include a Phillips screwdriver, a flat-blade screwdriver, a hexagon wrench and the like. Further, the tip members 42 and 52 may be cutlery tip members. Examples of the tip member for cutlery include spoons, forks, knives, tea spoons and the like. Further, the tip members 42 and 52 may be other members.

The slide members 46 and 56 are members whose rear portions engage with the rotating member 60 and slide in the front-rear direction as the rotating member 60 rotates. First engaging portions 46a, 56a are provided on the inner surface of the rear portion of the slide members 46, 56 in the radial direction dr. The first engaging portions 46a and 56a are formed as protruding portions protruding inward in the radial direction dr from the inner surface of the slide members 46 and 56. The first engaging portions 46a and 56a are respectively located in the first cam groove 62 described later of the rotating member 60 and engage with the first cam groove 62. Operation units 46b and 56b are provided on the outer surface of the rear portion of the slide members 46 and 56 in the radial direction dr. The operating portions 46b and 56b are formed as protruding portions protruding outward in the radial direction dr from the outer surface of the slide members 46 and 56. The operation units 46b and 56b are located in the slit 35 of the axle cylinder 30 (rear shaft 34) and can move back and forth in the slit 35. The operation units 46b and 56b project further outward from the outer surface of the axle cylinder 30 (rear shaft 34). As a result, in the present embodiment, the infestation members 40 and 50 can be moved in the front-rear direction even by the user operating the operation units 46b and 56b. When it is not necessary to move the infestation members 40 and 50 in the front-rear direction by the operation of the user, the operation portions 46b and 56b and the slit 35 can be omitted.

The intermediate members 44 and 54 are located between the tip members 42 and 52 and the slide members 46 and 56, and are members that connect the tip members 42 and 52 and the slide members 46 and 56. The front ends of the intermediate members 44 and 54 are connected to the rear ends of the tip members 42 and 52, and the rear ends of the intermediate members 44 and 54 are connected to the front ends of the slide members 46 and 56. As a result, the tip members 42, 52, the intermediate members 44, 54, and the slide members 46, 56 can be integrally moved back and forth. The intermediate members 44 and 54 may be omitted, and the tip members 42 and 52 and the slide members 46 and 56 may be directly connected, or the tip members 42 and 52, the intermediate members 44 and 54 and the slide members 46 and 56 may be connected. It may be formed by an integral member.

In the present embodiment, the infestation mechanism 20 has one infestation member of the first infestation member 40 and the second infestation member 50, but the present invention is not limited to this, and the infestation mechanism 20 has three or more infestation mechanisms. It may have a haunting member.

The rotating member 60 is rotatable around the central axis A, that is, in the circumferential direction dc with respect to the barrel 30. On the other hand, the movement of the rotating member 60 with respect to the barrel 30 in the axial direction da is restricted. The rotating member 60 rotates around the central axis A as the heavy body 70 moves rearward. The rotating member 60 has a first cam groove 62 on the outer surface. The first cam groove 62 extends over the entire circumference of the outer surface. The first cam groove 62 communicates with the first portion 62a extending in an inclined direction with respect to the axial direction da and the circumferential direction dc so as to move forward toward one side of the circumferential direction dc, and communicates with the first portion 62a. It includes a second portion 62b that extends obliquely with respect to the axial da and the circumferential dc so as to move backward toward one side of the direction dc. The first portion 62a and the second portion 62b are alternately arranged in the circumferential direction dc.

The first engaging portions 46a and 56a of the infestation members 40 and 50 are located in the first cam groove 62. As a result, the first engaging portions 46a and 56a are engaged with the first cam groove 62. Here, the movement of the first engaging portions 46a and 56a in the axial direction da is allowed, and the movement of the circumferential dc is restricted. Therefore, as the rotating member 60 rotates around the central axis A (circumferential direction dc), the first engaging portions 46a and 56a move in the axial direction (front-back direction) da while engaging with the first cam groove 62. do. As a result, the entire haunting members 40 and 50 move in the front-rear direction.

In the present embodiment, the first cam groove 62 includes one first portion 62a and one second portion 62b. That is, the first portion 62a extends 180 degrees around the central axis A, and the second portion 62b extends 180 degrees around the central axis A. Therefore, of the first cam groove 62, the frontmost portion 62c located at the frontmost portion and the rearmost portion 62d located at the rearmost portion are located 180 degrees apart along the circumferential direction dc. The first cam groove 62 is not limited to this, and as long as the number of the first portion 62a and the number of the second portion 62b are the same, the first cam groove 62 has two or more first portions 62a and two or more second portions 62b. And may be included.

The rotating member 60 has a first protruding portion 64 on the inner surface. In the present embodiment, a plurality of first protruding portions 64 are formed on the inner surface of the rotating member 60 along the circumferential direction dc. In particular, in the illustrated example, four first projecting portions 64 are formed on the inner surface of the rotating member 60 with equiangular pitches along the circumferential direction dc. That is, the two first protruding portions 64 adjacent to each other in the circumferential direction dc are located 90 degrees apart from each other. The first protruding portion 64 extends along the axial direction da and has a front inclined surface 66 at the front end. The forward inclined surface 66 is inclined with respect to the axial direction da and is inclined forward with respect to the circumferential direction dc. A groove 68 is formed between the two first protrusions 64 adjacent to each other in the circumferential direction dc. The groove portion 68 extends along the axial direction da. In the illustrated example, four groove portions 68 are formed on the inner surface of the rotating member 60 with equiangular pitches along the circumferential direction dc.

The heavy body 70 is configured to be rotatable around the central axis A, that is, in the circumferential direction dc, and to be rotatable in the front-rear direction, that is, in the axial direction da, with respect to the barrel 30. When the user swings the barrel 30 in the front-rear direction, the heavy body 70 moves in the front-rear direction in the barrel 30 due to the action of inertial force. The heavy body 70 has a second engaging portion 72 on the outer surface of the front portion. The second engaging portion 72 is a protruding portion protruding outward in the radial direction dr from the outer surface of the heavy body 70. In the present embodiment, the second engaging portion 72 has a circular contour when viewed from the outside of the radial dr. That is, the second engaging portion 72 has a columnar shape protruding outward in the radial direction dr from the outer surface of the heavy body 70. In the illustrated example, four second engaging portions 72 are formed on the outer surface of the heavy body 70 with equiangular pitches along the circumferential direction dc. That is, the two second engaging portions 72 adjacent to each other in the circumferential direction dc are positioned 90 degrees apart from each other.

The heavy body 70 has a second protruding portion 74 protruding outward in the radial direction from the outer surface of the heavy body 70 on the outer surface behind the second engaging portion 72. In the illustrated example, four second protrusions 74 are formed on the outer surface of the heavy body 70 with equiangular pitches along the circumferential direction dc. That is, the two second protruding portions 74 adjacent to each other in the circumferential direction dc are located 90 degrees apart from each other. The second protruding portion 74 extends along the axial direction da and has a rear inclined surface 76 at the rear end. The rear inclined surface 76 is inclined with respect to the axial direction da and is inclined to the rear side with respect to the circumferential direction dc. In the present embodiment, each of the second engaging portions 72 and each of the second protruding portions 74 are arranged side by side along the axial direction da. That is, the angular position of each of the second engaging portions 72 along the circumferential direction dc and the angular position of each of the second protruding portions 74 along the circumferential direction dc coincide with each other.

When the rear inclined surface 76 of the second protruding portion 74 moves rearward due to the moving of the heavy body 70 rearward, the rear inclined surface 76 presses the front inclined surface 66 of the first protruding portion 64 of the rotating member 60 rearward. do. As a result, the front inclined surface 66 slides with respect to the rear inclined surface 76, and the rotating member 60 rotates toward one side of the circumferential direction dc. At this time, from the viewpoint of sufficiently securing the pressing force of the rear inclined surface 76 on the front inclined surface 66, it is preferable that the weight of the heavy body 70 is large. Therefore, it is preferable that at least a part of the heavy body 70 is made of a metal material. For example, the entire weight body 70 may be made of a metal material. Further, the heavy body 70 may include a portion made of a resin material and a portion made of a metal material.

The fixed cam member 80 is restricted from moving in the front-rear direction (axial direction da) and around the central axis A (circumferential direction dc) with respect to the barrel 30. The fixed cam member 80 has a second cam groove 82 on the inner surface. In the present embodiment, four second cam grooves 82 are formed on the inner surface of the fixed cam member 80 with equiangular pitches along the circumferential direction dc. That is, the two second cam grooves 82 adjacent to each other in the circumferential direction dc are located 90 degrees apart from each other. The second engaging portion 72 of the heavy body 70 is located in the second cam groove 82. As a result, the second engaging portion 72 is engaged with the second cam groove 82. As the heavy body 70 moves in the front-rear direction, the second engaging portion 72 moves in the second cam groove 82. The second cam groove 82 extends substantially in the axial direction da and has a front end 84 and a rear end 85. The front end 84 is closed, and the second engaging portion 72 does not move forward of the front end 84. The rear end 85 is opened rearward, and the second engaging portion 72 can move rearward from the rear end 85.

The second cam groove 82 has a first guide surface 87 and a second guide surface 88. The first guide surface 87 is inclined with respect to the axial direction da and is inclined forward with respect to the circumferential direction dc. The second guide surface 88 is inclined with respect to the axial direction da and is inclined to the rear side with respect to the circumferential direction dc. In the present embodiment, the first guide surface 87 is located behind the second guide surface 88 in the axial direction da.

Further, the fixed cam member 80 has a groove portion 89 extending in the axial direction da on the outer surface. In particular, the fixed cam member 80 has two grooves 89. The groove 89 is configured to accommodate a part of the infestation members 40 and 50. In particular, in the present embodiment, the groove 89 accommodates the intermediate members 44, 54 of the infestation members 40, 50. The intermediate members 44 and 54 can move in the axial direction da while being housed in the groove 89.

Next, the operation of rotating the rotating member 60 around the central axis A will be described with reference to FIGS. 3A to 4. 3A to 3E are diagrams for explaining the operation for rotating the rotating member 60, and FIG. 4 is a diagram corresponding to the IV-IV line of FIG. 3A. In FIGS. 3A to 3E, the second engaging portion 72 and the second protruding portion 74 of the heavy body 70 and the second cam groove 82 of the fixed cam member 80 are viewed from the inside of the radial dr, that is, the central axis. It is shown as seen from A.

Here, as shown in FIG. 4, the height of the second protrusion 74 from the outer surface of the heavy body 70 along the radial direction is the height from the outer surface of the heavy body 70 along the radial direction dr. 2 It is lower than the height of the engaging portion 72. As a result, in the present embodiment, the second engaging portion 72 engages with the second cam groove 82 of the fixed cam member 80, while the second protruding portion 74 engages with the second cam groove 82. do not.

When the user holds the writing tool 10 so that the front end of the writing tool 10 is located on the lower side, that is, the user holds the haunting mechanism 20 so that the front end of the haunting mechanism 20 is located on the lower side. If so, the heavy body 70 is located on the front side due to the action of gravity. At this time, the second engaging portion 72 of the heavy body 70 is located at the front end 84 of the second cam groove 82 of the fixed cam member 80, as shown in FIG. 3A.

When the user swings the writing tool 10 (appearance mechanism 20) backward, the heavy body 70 moves backward due to the inertial force. At this time, the second engaging portion 72 of the heavy body 70 also moves rearward and comes into contact with the first guide surface 87 of the second cam groove 82 as shown in FIG. 3B.

When the heavy body 70 moves further rearward due to the inertial force, the second engaging portion 72 of the heavy body 70 is guided by the first guide surface 87 of the second cam groove 82, and is rearward and circumferentially dc in the axial direction da. Move to one side. At this time, the rear inclined surface 76 of the second protruding portion 74 of the heavy body 70 moves rearward, and the rear inclined surface 76 comes into contact with the forward inclined surface 66 of the first protruding portion 64 of the rotating member 60. As the heavy body 70 moves further rearward due to the inertial force, the rear inclined surface 76 presses the front inclined surface 66 rearward. As a result, the front inclined surface 66 slides with respect to the rear inclined surface 76, and as shown in FIG. 3C, the rotating member 60 rotates toward one side of the circumferential direction dc.

After that, when the heavy body 70 moves further rearward due to the inertial force, the second protruding portion 74 of the heavy body 70 enters the groove portion 68 of the rotating member 60 as shown in FIG. 3D. At this time, the second engaging portion 72 of the heavy body 70 moves further rearward than the rear end 85 of the second cam groove 82.

When the user stops swinging the writing tool 10 (appearance mechanism 20) backward, the heavy body 70 moves forward due to the action of gravity. Not limited to this, when the user swings the writing tool 10 (appearance mechanism 20) forward, the heavy body 70 moves forward due to the action of the inertial force. As a result, as shown in FIG. 3E, the second engaging portion 72 of the heavy body 70 moves forward and is located in the second cam groove 82 of the fixed cam member 80. At this time, the second protruding portion 74 exits forward from the groove portion 68 of the rotating member 60.

When the heavy body 70 moves further forward, the second engaging portion 72 also moves forward and comes into contact with the second guide surface 88 of the second cam groove 82. After that, the second engaging portion 72 is guided by the second guide surface 88 and moves forward in the axial direction and to the other side in the circumferential direction dc, and as shown in FIG. 3A, the second cam groove It will be located at the front end 84 of 82.

Therefore, when the user shakes the writing tool 10 (appearance mechanism 20) once in the front-rear direction, the rotating member 60 rotates at a predetermined angle in the circumferential direction dc, and the first protruding portion 64 of the rotating member 60 is formed in the circumferential direction dc. It moves to the position where the first protruding portion 64 adjacent to one side was located. In particular, in the present embodiment, when the user swings the infestation mechanism 20 once in the front-rear direction, the rotating member 60 rotates 90 degrees to one side of the circumferential direction dc.

Next, the infestation operation of the infestation members 40 and 50 will be described with reference to FIGS. 5A to 5D. 5A to 5D are views for explaining the infestation operation of the infestation members 40 and 50, and the first cam groove 62 of the rotating member 60 and the first engaging portions 46a and 56a of the infestation members 40 and 50, It is a figure which shows the positional relationship with. 5A-5D show the first cam groove 62 and the first engaging portions 46a, 56a as viewed from the outer side of the radial dr, that is, as viewed toward the central axis A. There is.

In FIG. 5A, the first engaging portion 46a of the first retracting member 40 is located at the foremost portion 62c of the first cam groove 62 of the rotating member 60, and the first engaging portion 56a of the second retracting member 50 is The state of being located at the rearmost portion 62d of the first cam groove 62 is shown. At this time, as shown in FIG. 1, the tip of the first infestation member 40 (pen tip 42a) protrudes forward from the opening 33 at the front end of the barrel 30, and the tip of the second infestation member 50 (pen). The tip 52a) is recessed behind the opening 33 at the front end of the barrel 30. In this state, the first haunting member 40 can be used.

With the rotation of the rotating member 60 in the circumferential direction dc, that is, with the rotation of the first cam groove 62 in the circumferential direction dc, the position of the axial da of the first engaging portion 46a of the first infestation member 40 and the second The position of the first engaging portion 56a of the infestation member 50 in the axial direction da changes. When the rotating member 60 rotates 90 degrees to one side of the circumferential direction dc, as shown in FIG. 5B, the first engaging portion 46a of the first infestation member 40 is the first portion 62a of the first cam groove 62. The first engaging portion 56a of the second infestation member 50 is located in the intermediate portion of the second portion 62b of the first cam groove 62. At this time, both the tip of the first infestation member 40 and the tip of the second infestation member 50 are immersed behind the opening 33 at the front end of the axle tube 30. In this state, neither the first infestation member 40 nor the second infestation member 50 can be used.

When the rotating member 60 is further rotated 90 degrees to one side of the circumferential direction dc, as shown in FIG. 5C, the first engaging portion 46a of the first infestation member 40 is the rearmost portion 62d of the first cam groove 62. The first engaging portion 56a of the second infestation member 50 is located at the foremost portion 62c of the first cam groove 62. At this time, the tip of the first infestation member 40 (pen tip 42a) is recessed behind the opening 33 at the front end of the barrel 30, and the tip of the second hoisting member 50 (pen tip 52a) is in the barrel 30. Protrudes forward from the opening 33 at the front end of the. In this state, the second haunting member 50 can be used.

When the rotating member 60 is further rotated 90 degrees to one side of the circumferential direction dc, as shown in FIG. 5D, the first engaging portion 46a of the first infestation member 40 is the second portion of the first cam groove 62. The first engaging portion 56a of the second infestation member 50 is located in the intermediate portion of the first cam groove 62, and is located in the intermediate portion of the first portion 62a of the first cam groove 62. At this time, both the tip of the first infestation member 40 and the tip of the second infestation member 50 are immersed behind the opening 33 at the front end of the axle tube 30. In this state, neither the first infestation member 40 nor the second infestation member 50 can be used.

When the rotating member 60 further rotates 90 degrees to one side of the circumferential direction dc, the state returns to the state shown in FIG. 5A.

The infestation mechanism 20 of the present embodiment has a central axis A extending in the longitudinal direction, a shaft cylinder 30 having an opening 33 at the front end in the longitudinal direction, a plurality of infestation members 40, 50, and rotation around the central axis A. By doing so, the rotating member 60 that causes the tips of the infesting members 40 and 50 to appear and disappear in order from the opening 33, and the heavy body 70 that rotates the rotating member 60 around the central axis A by moving back and forth. Be prepared.

In the present embodiment, the infestation members 40 and 50 have operation units 46b and 56b. When the user presses (knocks) the operating portions 46b and 56b forward, the tips of the infestation members 40 and 50 can be projected from the opening 33 at the front end of the barrel 30.

In the infestation mechanism 20 of the present embodiment, the rotating member 60 has a forward inclined surface 66 that is inclined with respect to the axial direction da and is inclined forward with respect to the circumferential direction dc, and the heavy body 70 is in the axial direction da. The rotating member 60 rotates by having a rear inclined surface 76 that is inclined with respect to the circumferential direction dc and inclined to the rear side with respect to the circumferential direction dc, and the rear inclined surface 76 moves rearward and presses the front inclined surface 66. ..

In the infestation mechanism 20 of the present embodiment, the rotating member 60 has a first cam groove 62 on the outer surface, and the infestation members 40 and 50 have first engaging portions 46a and 56a that engage with the first cam groove 62. Have.

In the haunting mechanism 20 of the present embodiment, the first cam groove 62 has a first portion 62a that extends so as to move forward toward one side of the circumferential direction dc with respect to the axial direction da and the circumferential direction dc. The first portion 62a and the first portion 62a include a second portion 62b that communicates with the first portion 62a and extends obliquely with respect to the axial direction da and the circumferential direction dc so as to move backward toward one side of the circumferential direction dc. The two portions 62b are alternately arranged in the circumferential direction dc.

The infestation mechanism 20 of the present embodiment further includes a fixed cam member 80 in which the movement of the circumferential dc and the axial da is restricted with respect to the barrel 30, and the fixed cam member 80 is a plurality of fixed cam members arranged in the circumferential direction dc. The second cam groove 82 of the above is provided on the inner surface, and the heavy body 70 has a second engaging portion 72 that engages with the second cam groove 82.

According to such an infestation mechanism 20, the tip portions of the plurality of infestation members 40 and 50 can be infested in order from the opening 33 only by swinging the infestation mechanism 20 in the axial direction da. Therefore, it is possible for the user to infest the tips of the infestation members 40 and 50 without having to change the infestation mechanism 20.

In the haunting mechanism 20 of the present embodiment, the haunting members 40 and 50 may include a writing tip member.

Examples of the writing tip member include a refill of a ballpoint pen, a pen tip for other writing instruments, and the like. According to such an infestation mechanism 20, it is possible to provide a writing tool 10 capable of infesting a plurality of pen tips in order without the user having to change hands.

In the infestation mechanism 20 of the present embodiment, the infestation members 40 and 50 may include a tool tip member.

Examples of the tip member for the tool include a Phillips screwdriver, a flat-blade screwdriver, a hexagon wrench and the like. According to such an infestation mechanism 20, it is possible to provide a tool capable of infesting a plurality of tool tip members in order without the user having to change hands.

In the haunting mechanism 20 of the present embodiment, the haunting members 40 and 50 may include a cutlery tip member.

Examples of the tip member for cutlery include spoons, forks, knives, tea spoons and the like. According to such a cutlery mechanism 20, it is possible to provide a cutlery that allows a plurality of cutlery tip members to appear and disappear in order without the user having to change hands.

10 Writing tool 20 Infestation mechanism 30 Shaft cylinder 32 Front shaft 33 Opening 34 Rear shaft 35 Slit 36 Cap 40 First infestation member 42 First tip member 42a Pen tip 44 First intermediate member 46 First slide member 46a First engaging portion 46b Operation part 50 Second infestation member 52 Second tip member 52a Pen tip 54 Second intermediate member 56 Second slide member 56a First engagement part 56b Operation part 60 Rotating member 62 First cam groove 62a First part 62b Second Part 62c Frontmost part 62d Last part 64 First protruding part 66 Front inclined surface 68 Groove part 70 Weight body 72 Second engaging part 74 Second protruding part 76 Rear inclined surface 80 Fixed cam member 82 Second cam groove 84 Front end 85 Rear end 87 1st guide surface 88 2nd guide surface 89 Groove

Claims (8)

A barrel having a central axis extending in the longitudinal direction and an opening at the front end in the longitudinal direction,
With multiple haunting members
A rotating member that causes the tip of each infestation member to appear and disappear in order from the opening by rotating around the central axis.
A haunting mechanism including a heavy body that rotates the rotating member around the central axis by moving back and forth. The rotating member has a forward inclined surface that is inclined in the axial direction and is inclined forward in the circumferential direction.
The heavy body has a rear inclined surface that is inclined with respect to the axial direction and inclined to the rear side with respect to the circumferential direction.
The haunting mechanism according to claim 1, wherein the rotating member rotates when the rear inclined surface moves rearward and presses the front inclined surface. The rotating member has a first cam groove on the outer surface and has a first cam groove.
The appearance / decrease mechanism according to claim 1 or 2, wherein the infestation member has a first engagement portion that engages with the first cam groove. The first cam groove communicates with a first portion extending in an axial direction and a circumferential direction so as to move forward toward one side in the circumferential direction, and communicates with the first portion and is connected to one side in the circumferential direction. Includes a second portion that extends inclining in the axial and circumferential directions so as to move backward toward
The haunting mechanism according to claim 3, wherein the first portion and the second portion are arranged alternately in the circumferential direction. A fixed cam member whose movement in the circumferential direction and the axial direction is restricted with respect to the barrel is further provided.
The fixed cam member has a plurality of second cam grooves arranged in the circumferential direction on the inner surface.
The haunting mechanism according to any one of claims 1 to 4, wherein the heavy body has a second engaging portion that engages with the second cam groove. The haunting mechanism according to any one of claims 1 to 5, wherein the haunting member includes a writing tip member. The infestation mechanism according to any one of claims 1 to 5, wherein the infestation member includes a tip member for a tool. The appearance / appearance mechanism according to any one of claims 1 to 5, wherein the appearance / appearance member includes a tip member for cutlery.

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