TWI515122B - Clip device for writing implement - Google Patents

Description

Pen holder installation structure

The present invention relates to a pen holder mounting structure for a writing instrument, and more particularly to a pen holder mounting member and a pen holder member, and the pen holder member is a pen holder that is pivotally mounted on the pen holder mounting member for the pen holder mounting member. Pen clip mounting construction.

Conventionally, such a clip mounting structure has been known in many forms, and a spiral spring having a tendency to urge the two members to move in a direction of being separated from each other is provided between the pen holder member and the pen holder mounting member. Also known. For example, in the structure described in Japanese Patent Laid-Open Publication No. Hei., the end portion of the outer tube of the pen tube and the like is formed with a thick portion having a considerable thickness, and the leg portion of the rear end portion of the pen holder member is inserted into the thick portion. From the slot, the clip member is prevented from falling off, and a coil spring is mounted between the foot and the bottom of the slot hole.

However, according to the configuration of this patent document, the rear end portion of the writing instrument must be formed to be thickened by the pen holder structure, so that the use of the inner space of the writing instrument is restricted, which is a problem.

In order to solve this problem, the present applicant has proposed the following pen holder mounting structure as disclosed in Patent Document 2, which can clamp the pen holder member and the coil spring for elastically cooperating the pen holder member without occupying the pen holder. The constructor of the assembly is completed in the internal space.

According to the pen clamp mounting structure, a coil spring is disposed between the pen holder member and the pen holder mounting member to impart an elastic force to the two members to move in a direction of phase separation, and one end of the coil spring is sleeved on the pen holder mounting member. The protrusion is provided on the outside, and the other end of the coil spring is inserted into the recess of the pen holder member facing the face of the pen holder mounting member to maintain the positioning. However, in such a configuration, after the coil spring is mounted, it is unstable during the assembly process of the clip member, so that it may fall off when it is detached, which may affect the production efficiency.

Patent Document 1: Japanese Unbiased No. 5-45517.

Patent Document 2: Utility New Case Registration No. 313940.

The present invention has been further improved in the structure of the above-mentioned Patent Document 2. The main object of the present invention is to provide a pen holder mounting structure for a writing instrument which can surely prevent the coil spring from coming off and at the same time, and which can make the appearance of the post-installation more beautiful.

In order to achieve the above object, the invention of claim 1 of the present invention is a pen clip mounting structure for a pen, comprising a pen holder mounting member for mounting a pen holder and a pen member, and the pen holder member is attached to the pen holder The component is detachably and detachably mounted on the pen holder mounting member; and the coil spring member and the pen holder mounting member are provided with a coil spring capable of forcing the two members to move away from each other. And a surface of at least one of the pen clip member or the clip mounting member is connected with a socket portion for receiving the coil spring protruding from the other of the two members; the socket portion includes a spiral spring a first socket portion and a second socket portion of the axial line; wherein the first socket portion is configured to receive a portion surrounding one end of the coil spring, and the remaining portion is formed to be open; the second socket The constituting portion is at least capable of receiving the periphery of the other end of the same end of the coil spring, and the periphery of the remaining portion is formed open; and the end of the coil spring is supported by the cooperation of the first socket portion and the second socket portion Department Surrounded by surrounding acceptance.

The invention of claim 2 is the pen clip mounting structure of the pen according to claim 1, wherein the first socket portion and the second socket portion are open to each of the portions of the end portion of the coil spring The portions are respectively disposed on one side opposite to the central axis of the coil spring.

The invention of claim 3 is the pen holder mounting structure of the pen according to claim 2, wherein one of the pen holder mounting member and the pen holder member is formed in the other of the members One of the pair of receiving holes is formed, and the pen holder mounting member and the pen holder member are rotatably connected, and the directions of the respective open portions of the first seat portion and the second seat portion are One of the above The protruding direction of the shaft portion or the center direction of the pair of receiving holes is identical.

The invention of claim 4 is the pen clip mounting structure of the pen according to claim 3, wherein the socket portion is connected to a joint portion in which the shaft portion or the receiving hole is formed.

The invention of claim 5 is the pen holder mounting structure of the pen according to claim 1, wherein the other of the pen holder mounting member or the pen holder member forms an end portion capable of enclosing the other end of the coil spring Annular ribs.

According to the configuration of the present invention as described above, the socket portion is constituted by the first socket portion and the second socket portion which are disposed along the axis line of the coil spring; wherein the first socket portion is configured to be capable of receiving the bracket Around the end of one end of the coil spring, the periphery of the remaining portion is formed open; the second socket portion is configured to receive at least the other portion surrounding the same end of the coil spring, and the rest is formed to be open; The first socket portion and the second socket portion cooperate to surround the entire circumference of the end portion of the coil spring, and the joint portion can surely prevent the coil spring from falling off.

Moreover, the socket portion can cover the entire end of the coil spring for a large period, so that the exposed portion of the coil spring of the mechanical component is minimized and is not easy to be seen from the outside, so that the pen clip structure can be more beautiful.

Furthermore, since the opening portions of the first socket portion and the second socket are disposed on opposite sides of each other, the socket portions can be formed by being able to pass through and correspond to each other by the opening portion The slider of the mold that slides in the direction is formed, and the operation is simplified.

Further, the protruding direction of the shaft portion formed by either of the pen holder mounting member and the pen holder member or the center direction of the receiving hole is connected to each of the opening portions of the first socket portion and the second socket portion Since the directions of the openings are the same, the shaft portion or the receiving hole and the first socket portion and the second socket portion can be simultaneously formed by the sliders that can slide in the direction of contacting each other and in the direction of separation, thereby enabling Its molding (production) is easier.

Moreover, since the socket portion is integrally formed with the coupling portion, the overall size of the pen holder mounting structure can be reduced.

Further, since the annular projecting rib which can surround and receive the other end of the coil spring is provided, the coil spring can be surely prevented from falling off.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described in detail with reference to the accompanying drawings: FIG. 1 is a longitudinal sectional view showing an overall structure of a writing instrument according to an example of a writing instrument according to a first embodiment of the present invention. The pen 10 to be displayed is a mechanical pencil, but is not limited thereto, and any pen holder mounting structure can be applied to any pen such as a ball pen. The pen 10 is connected to the pen tube 12 at the rear end of the pen tube 11 at the rear end of the pen tube 11 , and is screwed to the cone 14 before the front end of the pen tube 11 , and is sleeved in the middle portion of the front cone 14 . The surrounding cylindrical elastic grip sleeve 16 and the core feeding mechanism 18 accommodated in the front pen tube 11 for gripping the writing pen core are formed. The core feeding mechanism 18 can adopt the configuration of any such mechanism as known, and therefore will not be described herein.

The rear end of the rear pen tube 12 is embedded with a tail cap 20 as a clip mounting member, and the tail cap 20 is preferably formed of a synthetic resin material (for example, a polycarbonate resin material or an ABS resin material). At the rear end of the rear pen tube 12. The tail cap 20 is mounted in the state of the rear pen tube 12, and the refill tube 19 belonging to one of the components of the writing refill assembly substantially penetrates the inside of the rear pen tube 12, and the eraser receiving portion attached to the rear end of the refill tube 19 is attached. The cartridge 21 protrudes from the rear pen tube 12 and the rear end of the tail cap 20, and the eraser is inserted into the eraser receiving cylinder 21 to keep the tail end exposed.

As shown in the second and third figures, the tail cap 20 is mainly composed of an annular cover 20a which can be nested in the outer peripheral surface of the rear end of the rear pen tube 12, and a part of the outer peripheral surface of the cover 20a The protruding connecting portion 20b is formed by a spring retaining portion 20c that is connected to the rear side of the lid body 20a (the front side of the third drawing) and protrudes in the radial direction.

As shown in the second figures (d) and (e), the lid body 20a has a polygonal hole portion 20d which can be fastened and fitted to the outer peripheral surface of the rear pen tube 12, and a rear side is formed with a lockable rear portion. A small protrusion 20e on the outer peripheral surface of the pen tube 12. The tail cap 20 is formed by nesting the lid body 20a at the rear end portion of the rear pen tube 12 so that the front end of the lid body 20a abuts against the stepped shoulder portion 12a formed by the outer peripheral surface of the rear pen tube 12 (see the first figure). At the same time, the polygonal hole portion 20d is fitted to the outer peripheral surface of the rear pen tube 12 to form a corresponding polygonal column portion 12b (see the first figure), and the small protrusion 20e locks the outer peripheral surface of the rear pen tube 12. And fixed to the rear pen tube 12.

The connecting portion 20b has a lateral direction as shown in the second figures (c) and (d) Cross section Font portion 20f, this The inner space of the word portion 20f communicates with the center hole of the cover 20a, and The two side walls of the word portion 20f are provided with a pair of cylindrical shaft portions 20h, 20h projecting outwardly on the concentric line. The upper side portions of the end portions of the cylindrical shaft portions 20h, 20h form a chamfered slope portion.

A stepped seat portion 20c for receiving a coil spring to be described later is integrally connected to the rear portion of the joint portion 20b. The socket portion 20c is provided by the first socket portion 20m provided on the side of the lid body 20a and located at the first portion The upper portion of the socket portion 20m, that is, the second socket portion 20n on the side of the pen holder member.

Specifically, the shape of each of the first socket portion 20m and the second socket portion 20n is such that the inner peripheral surface of the central portion has an approximately semicircular arcuate opening, and the outer peripheral surface is slightly The plate-shaped body of the glyph has a shape in which the two semicircular arc-shaped openings are vertically opposed to each other. Therefore, the two together have a shape in plan view, and the inner peripheral faces of the first socket portion 20m and the second socket portion 20n form a full circle. The outer peripheral surface is formed in a rectangular shape integrally connected with the joint portion 20b (see FIG. 2(b)). Moreover, each of the first socket portion 20m and the second socket portion 20n The ends of the word shape are connected to each other in a stepped shape. Further, the respective open portions 20ml, 20nl of the first socket portion 20m and the second socket portion 20n are respectively disposed on one side opposite to the upper and lower sides, and the opposite directions are respectively protruded from the pair of cylindrical shaft portions 20h. The directions are the same, and thus coincide with the pivot center axis of the pen holder member 22 which will be described later.

The pen holder member 22 is mainly composed of a pen holder piece portion 22a, and the both side edge portions of the pen piece piece portion 22a are formed by the pen holder side piece portion 22b extending in the direction of the rear pen tube 12 and the tail end cover 20, respectively. Each of the clip side piece portions 22b is provided with a receiving hole (shaft hole) 22c into which the cylindrical shaft portion 20h is accommodated, and one end of the receiving hole 22c is formed with a guide groove portion 22f connected to the receiving hole 22c. Further, an annular rib 22d is formed at a position behind the receiving hole 22c on the inner wall surface of the pen cleat portion 22a, and the rear end portion of the pen cleat piece 22a is formed with an upwardly curved bent portion 22e.

When the receiving hole 22c of the pen holder member 22 is inserted into the cylindrical shaft portion 20h of the corresponding tail cap 20, the pen holder member 22 is rotatably coupled to the tail cap 20, and the leading end is along the rear pen tube 12 The axially extending surface is mounted on the outer side of the rear end of the rear pen tube 12. Since the upper side of the protruding end of the cylindrical shaft portion 20h forms a slope portion, and the receiving hole 22c of the pen holder member 22 is provided with the guide groove portion 22f, when the cylindrical shaft portion 20h is fitted into the receiving hole 22c, the cylindrical shaft portion The 20h inclined surface portion is guided by the guide groove 22f and enters the receiving hole 22c, so that the fitting work can be performed smoothly and easily.

In order to enable the front end of the pen holder member 22 to be crimped to the outer peripheral surface of the rear pen tube 12 to generate a clamping force therebetween, to obtain the function of the pen holder, at the end of the pen holder member 22 and the pen holder mounting member A coil spring 24 is disposed between the cover 20, and the coil spring 24 is disposed at a position behind the joint portion 20b to impart a spring force to the rear end portion of the tail cap 20 and the clip member 22 to be separated from each other. Therefore, the front end of the pen holder member 22 can be crimped to the outer peripheral surface of the rear pen tube 12 to function as a pen holder.

One end of the coil spring 24 is received and surrounded by the seat portion 20c of the tail cap 20, and the other end is inserted into the annular projecting rib 22d of the clip member 22, so that the coil spring 24 is positioned at the tail cap 20 and the clip member Between 22, the two ends of the coil spring 24 are restrained by the socket portion 20c and the annular projection rib 22d, respectively.

More specifically, the first socket portion 20m can surround at least one portion of the end portion of the coil spring 24, and the remaining portion of the end portion of the coil spring 24 is located in the open portion 20ml to be freely open, and the second socket portion 20n At least another portion of one end of the coil spring 24 can be surrounded, and the other remaining portion of the end of the coil spring 24 is located in the open portion 20n1 to be freely open, and thus, by the first socket portion 20m and the second portion The end portion of the coil spring 24 can be surrounded by the entire circumference of the socket portion 20n.

According to the pen holder mounting structure constructed as above, the front end of the pen holder member 22 is normally as shown in the fifth figure (a), and the front end is forced downward by the coil spring 24 to force the front end to be pressed down to the rear pen tube 12 It is closed. When it is desired to sandwich a sheet such as a pocket cloth between the pen holder member 22 and the rear pen tube 12, the pen holder member 22 resists the coil spring as long as the bent portion 22e at the rear end of the pen holder member 22 is pressed downward. The elastic tension of 24 causes the front end to float upward, and opens between the pen holder member 22 and the rear pen tube 12, so that the sheet can be inserted into the gap, and the elastic members of the two members 22, 12 and the coil spring 24 are clamped. Tightening the sheet.

The socket portion 20c and the annular projecting rib 22d should be set so as not to cause mutual interference and hindrance when the pen holder member 22 is rotated about the shaft portion 20h. Since the socket portion 20c can surround one end of the coil spring 24 by a considerable length (height), the height of the annular projecting rib 22d is low.

In this way, since the coil spring 24 is received and surrounded by the socket portion 20c, and the yoke can effectively prevent the coil spring 24 from coming off, the yoke portion 20c also encloses the coil spring 24 for a relatively long period, thereby reducing the number of mechanical parts. The coil spring 24 of the component is exposed to improve the aesthetic appearance. The rear end portion of the reciprocating pen holder member 22 forms an upwardly convex curved portion 22e, making the coil spring 24 less visible from the outside.

Further, since the socket portion 20c is constituted by the first socket portion 20m and the second socket portion 20n, it is possible to facilitate the injection molding of the tail cap 20 itself having the socket portion 20c. The sixth figure is an explanatory view. It can be seen from the figure that since the respective open portions 20ml and 20nl of the first socket portion 20m and the second socket portion 20n are mutually offset, they are used to form the two open portions 20ml. The sliders S1 and S2 of the 20nl mold can be slidably moved in the direction of mutual engagement by a space corresponding to the open portions 20ml and 20nl.

In particular, the direction of the respective open portions 20ml, 20nl of the first socket portion 20m and the second socket portion 20n coincides with the direction in which the cylindrical shaft portion 20h protrudes, and the cylinders can be aligned by the same sliders S1, S2. The shaft portion 20h and the socket portion 20c are simultaneously molded, and the molding die is not only complicated, but also easy to mold. Further, the cylindrical shaft portions 20h of the joint portion 20b are also in a mutually opposite direction, and the sliders S1 and S2 for forming the undercut portions of the two cylindrical shaft portions 20h are necessary to be molded. The two sides of the cylindrical shaft portion 20h slide in the direction of mutual engagement, and the sliding direction is in conformity with the forming of the open portions 20ml, 20nl, so that the two parts can be formed into one, and the same slider S1 is used. , S2 reached.

Since the socket portion 20c is integrally formed with the coupling portion 20b, the overall size of the pen holder mounting structure can be minimized.

Moreover, since the coil springs 24 are disposed on the outer sides of the rear pen tube 12 and the tail cap 20, the inner space of the rear pen tube 12 and the tail cap 20 can be fully utilized effectively. In this case, the pen core tube 19 is penetrated through the rear section. The pen tube 12 is provided to ensure not only the longer length of the pen core tube 19 but also the refill to the inside of the pen core tube 19 from behind the writing instrument 10.

In addition, in the above embodiment, the socket portion is formed on the tail cover 20 of the clip mounting member, but the implementation is not limited thereto, such as using the pen tube of the rear pen tube or the front pen tube as a pen. It is also impossible to clamp the mounting member.

Moreover, in the above example, the socket portion is provided on the pen holder mounting member, but the invention is not limited thereto, and the seat portion may be provided on the pen holder member, or even the pen holder mounting member and the pen holder member. Both are also possible.

Furthermore, in the above example, the shaft portion is formed on the joint portion of the clip mounting member, and the shaft hole, that is, the receiving hole is provided on the clip member, and if not, the receiving hole is set in the clip holder. The connecting portion of the member may be provided on the pen holder member. Further, it is also possible to provide the shaft portion on the joint portion of the clip member and to form the receiving hole in the joint portion of the clip mounting member. In any case, the forming of the member becomes easier as long as the direction of the respective open portions of the first socket portion 20m and the second socket portion 20n coincides with the axial direction of the receiving hole or the protruding direction of the shaft portion. It is convenient for homework. Moreover, it is very convenient to integrally form the socket portion and the joint portion, but it is not limited to this configuration, and it is not necessary to separate the socket portion from the joint portion.

10. . . Pen

11. . . Front pen tube

12. . . Rear pen tube

12a. . . Shoulder

12b. . . Polygonal column

14. . . Front cone

16. . . Grip sleeve

18. . . Core feeding mechanism

19. . . Refill tube

20. . . Tail cap

20a. . . Cover

20b. . . Linkage

20c. . . Seat department

20d. . . Polygonal hole

20e. . . Small protrusion

20f. . . Word department

20h. . . Cylindrical shaft

20m. . . First seat

20n. . . Second seat

20ml. . . Open part

20nl. . . Open part

twenty one. . . Eraser bearing cylinder

twenty two. . . Pen clamp member

22a. . . Pen splint

22b. . . Pen clip side piece

22c. . . Bearing hole (shaft hole)

22d. . . Annular rib

22e. . . Bending

22f. . . Guide groove

twenty four. . . Coil spring

S1, S2. . . Slider

The first drawing shows a longitudinal cross-sectional view of the entire pen of the embodiment of the pen holder mounting structure of the pen of the present invention.

The second figure shows (a) a side view, (b) a plan view, (c) a longitudinal section, (d) a front view, and (e) a rear view of the main part as a tail cap of the clip mounting member.

The third figure shows a perspective view of the tail cap as a clip mounting member.

The fourth figure shows a side view (a) and a cross-sectional view (b) of the pen holder mounting member.

The fifth drawing shows an enlarged view of the pen holder mounting structure of the pen of the present invention, wherein (a) is a pen holder member in a normal state, and (b) is a cross-sectional view of the pen holder member in an open state.

The sixth figure shows an explanatory view of the relationship between the tail cap of the clip mounting member and the slider of the molding die, wherein (a) is a state in which the pair of sliders are apart from each other, and (b) is a pair of sliders approaching each other. Schematic diagram of the state.

20. . . Tail cap

20a. . . Cover

20b. . . Linkage

20c. . . Seat department

20f. . . Word department

20h. . . Cylindrical shaft

20m. . . First seat

20ml. . . Open part

20n. . . Second seat

20nl. . . Open part

Claims (5)

A pen clip mounting structure for a writing instrument, which is a mounting structure for mounting a pen holder member on a pen holder mounting member of a writing instrument, wherein one of the pen holder mounting member and the pen holder member forms a pair of axes The parts are respectively embedded in one of the pair of members to form a pair of receiving holes, and the pen holder mounting member is rotatably connected to the pen holder member; and the pen holder member is characterized in that: a coil spring is provided between the pen holder mounting member for forcing the two members to move away from each other, and at least one of the pen holder member or the pen holder mounting member is provided with a direction The other of the two members protrudes from the socket portion for receiving the coil spring; the socket portion includes a first socket portion and a second socket portion disposed along an axis line of the coil spring; The first socket portion is configured to receive a portion surrounding an end portion of the coil spring, and the periphery of the remaining portion is formed to be open; and the second socket portion is configured to receive at least the same end surrounding the coil spring Another one Surrounding points, the remaining portion is formed around the opening; and by fitting seat and the second portion of the first seat portion so as to surround an end portion of the coil spring bearing panoramic satisfied. The pen clip mounting structure of the pen according to claim 1, wherein each of the opening portions of the first socket portion and the second socket portion that can open the end portion of the coil spring is separately provided The central axis of the coil spring is opposite to one side. The pen clip mounting structure of the pen according to claim 2, wherein a direction of each of the opening portions of the first socket portion and the second socket portion is a direction of protrusion of the pair of shaft portions or the pair of bearings The center of the hole is in the same direction. The pen clip mounting structure of the pen according to claim 3, wherein the socket portion is connected to a joint portion in which the shaft portion or the receiving hole is formed. The pen holder mounting structure of the pen according to claim 1, wherein the other of the pen holder mounting member or the pen holder member forms an annular projection rib capable of enclosing an end portion of the other end of the coil spring .