JPH0453989Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention relates to a notsuku-type writing instrument in which a member having another function having a function other than the writing function is attached to the push member, and the other function having member has a function other than the writing function. This invention relates to an improvement in a push member mounting structure that takes into consideration ease of installation and replacement.

"Prior Art and Problems to be Solved by the Present Proposal" It has been widely known that there are knock-type writing instruments in which the push member has functions other than that of a writing instrument.

Components with other functions include stamps for convenient imprinting of signatures, decorative effects,
An example is a display member that takes into consideration the color identification of the ink used.

However, in order to attach these items to the push member, a strong fitting force is required to prevent them from coming off easily, and as a result, considerable pushing and pulling force is required to attach and remove them from the push member, resulting in reduced workability. There have been problems such as deterioration of the pushing member or breakage of the pushing member itself.

"Means for Solving Problems" This proposal is intended to solve the problems of these conventional technologies, and is designed to provide a pusher member that is simpler in terms of structure and workability, taking into account the convenience of attaching and replacing members with other functions. This is a mounting structure in which a recess for fitting and a guide protrusion are formed on one of the divided push members, and a tip of the other push member is attached with a member having other functions. A means to solve this problem is to form a flat shape from an elastic material, and to form a hook part that engages with the recess and a groove part that engages with the protrusion at the tip thereof.

"Function" According to the present invention, since the tip of the rear part of the pushing member is made of an elastic material and formed into a flat shape, the hooking part of the tip also naturally has elastic force, so it has other functions. The rear part of the push member with the member attached is
By engaging the groove part with the guide protrusion part of the front part and pressing it until the hook part engages with the fitting recess of the front part, it is reliably connected to the front part within the shaft cylinder. Therefore, in order to separate the two again, the pushing member that is locked inside the barrel should be released from the barrel, and the hook part should be pushed outward from its center and released from the recess. , the separation is easily realized.

"Example" Hereinafter, an example of the present invention will be described based on the drawings.

The pushing member 1 is divided into a front portion 1a and a rear portion 1b, and the front portion 1a is provided with a locking protrusion 2 that springs outward from the center of the shaft cylinder 3. This locking protrusion 2 engages and disengages alternately the front through hole 4 and the rear through hole 5, which are bored before and after the boundary part 3' formed in the shaft cylinder 3, and allows the pushing member 1 to be engaged with the shaft cylinder. By pressing in the direction of the tip opening 3a, the front through hole 4 is opened.
At this time, the elastic force of the coil spring S urges the writing body R toward the rear end opening 3b of the barrel, pushing the writing body R in contact with the pushing member 1 into the opening 3a at the front end of the barrel.
The end of the brush is moved against the elastic force in the direction of
R' is exposed from the opening 3a to achieve a writing state. In addition, in order to sink the brush end R' into the shaft tube 3, a locking protrusion 2 that engages with the front through hole 4 is required.
The locking protrusion 2 is urged by the elastic force of the coil spring S by pressing it toward the center of the barrel 3 to release the engagement with the through hole 4. As the writing body R moves backward, the writing body R moves toward the rear end opening 3b of the barrel and engages in the rear through hole 5 again, thereby locking the writing body R in the barrel 3.

The front portion 1a of the pushing member 1 in which the locking protrusion 2 is formed includes a guide protrusion 6 extending in the axial direction behind the protrusion 2, and a fitting recess located in front of the protrusion 6. 7 is formed. The rear portion 1b of the pushing member 1 consists of a tip portion 1b' and a rear portion 1b'', and the rear portion 1b'' has a member 8 having other functions other than a writing instrument, such as a stamp or a display member for identifying the color of the ink used. It is installed.

Further, the tip portion 1b' is formed in a flat shape from an elastic material, and this elastic tip portion 1b' has a groove 9 that engages with a guide protrusion 6 formed on the front portion 1a of the pushing member. A hook portion 10 that engages with the fitting recess 7 of the front portion 1a is provided.

Two specifications can be considered for attaching the push member 1 having the other function retaining member 8 to the shaft cylinder 3. One is the rear end opening 3b of the shaft cylinder, with respect to the front part 1a of the push member that engages the locking protrusion 2 with either of the through holes 4, 5 and locks it in the shaft cylinder 3. From the side, engage the groove 9 of the rear part 1b with the guide protrusion 6 of the front part 1a, and insert the rear part 1b into the shaft cylinder 3 until the hook part 10 engages with the fitting recess 7. This is the specification that will be carried out. In this case, since the hook portion 10 is flat and has elasticity, it easily and reliably engages with the fitting recess 7 of the front portion 1a.

Further, as shown in FIG. 4, the front portion 1a and the rear portion 1b are connected in advance outside the shaft tube 3 until the locking protrusion 2 engages in the rear through hole 5 of the shaft tube 3. The attachment can be easily and reliably achieved by inserting it into the shaft cylinder 3 while pressing it.

If the front part 1a and the rear part 1b are connected in advance, it is possible to separate the two parts 1a and 1b when the other function retaining member 8 suddenly needs to be replaced for some reason. Since it is relatively easy, it is advantageous in terms of workability compared to doing it after it is installed inside the shaft cylinder 3.

When it becomes necessary to replace the member 8 having other functions after it is installed inside the shaft cylinder 3, the locking protrusion 2 of the push member is removed from the through hole 5, and the push member 1 is removed from the shaft cylinder 3. After taking it out, the hook portion 10 may be lightly pushed open outward from its center. Hook part 1
0 is flat and has elasticity as described above, so it can be removed from the fitting recess 7 very easily. Therefore, replacing the member 8 that has other functions will not damage the pusher member 1 itself. This means that it can be done easily and without having to do anything.

"Effect of the invention" As described above, the present invention divides the pushing member into a front part equipped with a locking mechanism and a rear part to which a member with other functions is attached, and a hook provided at the elastic tip of the rear part. Since the part is engaged with and detached from the fitting recess in the front part, even if the member with other functions is attached to the pushing member itself in a fixed state, there is no need to replace the member with other functions. to quickly and
Now you can easily deal with it.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view illustrating the entire writing instrument according to the present invention, Figure 2 is an enlarged cross-sectional view taken along the line AA in Figure 1, Figure 3 is an enlarged cross-sectional view taken along Figure 1 B-B, and Figure 4 is a push FIG. 3 is an enlarged explanatory view showing a state in which the front part and the rear part of the member are connected. 1... Push member, 1a... Front portion, 1b...
Rear portion, 2...Locking protrusion, 3...Shaft cylinder, 3'
... Boundary part, 4, 5 ... Through hole, 6 ... Guide protrusion, 7 ... Fitting recess, 8 ... Other function retaining member, 9 ... Groove, 10 ... Hook part, R ...Cursive, S...Coil spring.

Claims (1)

[Scope of utility model registration request] The writing body R stored in the barrel 3 while being biased toward the rear end opening 3b of the barrel is pressed against the pushing member 1 from the rear opening 3b side of the barrel, and the barrel 3 formed on the pushing member 1 is pressed. A through hole 4 is provided with a locking protrusion 2 that springs outward from the center of the shaft cylinder 3 at the front and rear of the boundary 3' of the shaft cylinder 3,
5, in which the brush end R' protrudes and retracts from the barrel tip opening 3a,
The pushing member 1 is divided into a front part 1a and a rear part 1b, a stamp or other function-having member 8 such as a display member is attached to the rear part 1b'' of the rear part 1b, and the tip part 1b' of the rear part 1b is made of an elastic material. The distal end portion 1b' has a hook portion 10 that engages with a fitting recess 7 provided in the front portion 1a of the push member, and a guide protrusion provided in the front portion 1a of the push member. A mounting structure for a push member having a member having other functions in a knob-type writing instrument, characterized in that a groove portion 9 that engages with a strip portion 6 is formed.