JPH0335590Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a knock-type writing instrument in which a writing instrument is protruded or retracted by a knob operation.

Conventionally, in a writing instrument that has a structure in which the tip writing part of the cursive body appears and disappears at the tip opening of the barrel, the tip writing part is immersed into the barrel while the tip writing part of the writing body protrudes from the tip opening of the barrel. If you forget to use the clip to attach it to your clothes pocket, you may end up staining your clothes.

In order to eliminate such adverse effects, for example,
As shown in Publication No. 6640, there is a method in which the tip of the writing part of the cursive body protrudes from the tip opening of the barrel, and the ball of the clip is recessed into the barrel, making it impossible to use the clip. be. However, the structure of the clip and sleeve assembly shown in Japanese Patent Publication No. 58-6640 is complicated, and the clip assembly is troublesome, and the writing part at the tip of the cursive body is attached to the tip of the barrel. When the clip is moved in and out at the end opening, the user has to push the mounting end of the clip or push the ball of the clip, which has the disadvantage of making the operation cumbersome.
By the way, in order to simplify the structure and make it easier to operate the writing part at the tip of the cursive,
As shown in Japanese Patent No. 42735, it is more advantageous to adopt a knock system in which the clip and the knock body are integrated and a rotor and a cam are provided. However, as seen in Japanese Utility Model Publication No. 54-42735, a structure in which the rotor is locked to the knob body in a manner that prevents it from coming off has the disadvantage that it is troublesome to assemble the parts. Therefore, if the rotor and the knurled body are loosely fitted like in a normal knurled writing instrument where the knuckle and rotor are easy to assemble, the knob may separate from the rotor and retreat naturally. If the clip that is integrated with the knob body also retreats and the ball portion of the clip is recessed into the barrel, there is a problem that this state cannot be maintained.

Therefore, in the present invention, first of all, the ball part of the clip sinks into the shaft tube while the writing part at the tip of the writing body protrudes from the shaft tip opening, preventing the clip from being used. It is simple, and the tip of the writing part of the cursive can be moved in and out of the tip opening of the barrel by a simple operation of notching the notch body.Furthermore, it is easy to assemble the parts, and the ball part of the clip can be inserted into the barrel of the barrel. To provide a notch-type writing instrument that can reliably maintain a state of being immersed in the object.

In order to achieve the above object, the knock-type writing instrument of the present invention has a knob body 1 and a clip 2 integrated, and a rotor 9 between the knob body 1 inserted into the barrel 4 and the writing body 3 in front of it. is loosely fitted into the knob body 1, and the rotor 9 is rotated in the circumferential direction and displaced in the axial direction by locking on the inner surface of the shaft tube 4 by the knob operation, thereby creating a cursive writing system. A cam 10 is provided to make the tip writing part of the writing body 3 appear and retract from the tip opening 5 of the barrel 4, and the knock body 1 is moved forward by the knock operation to move the tip writing part of the writing body 3 to the tip opening 5 of the barrel 4.
A window hole 7 or a recess into which the ball part 6 provided at the front end of the clip 2 which has moved forward together with the knob body 1 while protruding from the clip 2 can be inserted is provided in the shaft tube 4. Press body 1 forward to write cursive 3
The position of the clip 2 is fixed when the writing part at the tip protrudes from the tip opening 5 of the barrel 4.
This is characterized in that a presser spring 8 is interposed to maintain the state in which the ball portion 6 is recessed into the window hole 7 or the recessed portion of the shaft tube 4.

The figure shows an embodiment of the present invention.
The ball of the clip 2 in the state in which the clip 2 is integrated with the clip 2, the knock body 1 is knocked and moves forward, and the tip writing part of the writing body 3 protrudes from the tip opening 5 of the barrel 4 (see Fig. 2). A window hole 7 whose rear end edge is tapered at the position of the shaft tube 4 corresponding to the position where the part 6 is located.
was established. 8 in the figure is a presser spring, 9
10 is a rotor, 10 is a cam, and 11 is a return spring.
Note that an embodiment in which the window hole 7 is replaced by a simple recess is also possible.

Its operation is as follows.

When the rotor 9 is slid along the cam 10 and rotated by the tip of the cam 10 to make the writing body 3 protrude from the tip opening 5 of the barrel 4 and lock it, the ball portion of the clip 2 is locked. If the clip 6 sinks into the window hole 7 of the barrel 4 (the clip 2 is provided with a spring property that always presses against the barrel 4 and is integrated into the knob body 1), it becomes unusable. Become. Therefore, it is impossible to attach the writing body 3 to clothing while it remains protruding. At this time, the knob body 1 is pressed forward by the presser spring 8, so that the clip 6 does not move back either and the ball portion 6 remains recessed into the window hole 7.
Next, when the knock body 1 is knocked again, the lock between the rotor 9 and the cam 10 is released, and the restoring force of the return spring 11, which has a stronger spring force than the presser spring 8 (because the rear end edge of the window hole 7 has a tapered shape, ) allows the cursive 3 to be stored and the cursive 1
is retreated, and the ball portion 6 of the clip 2 also easily escapes to the outer surface of the shaft tube 4 due to the tapered rear edge of the window hole 7 (see FIG. 1). Therefore, in this state, the clip 2 can be attached to clothing.

The present invention is constructed as described above, and has the effect of preventing the protruding writing part of the cursive from being attached to clothing, thereby avoiding staining the clothing. In addition, the structure is simple, the operation is easy, the parts are easy to assemble, and the ball of the clip can be reliably maintained in the window hole or recess of the barrel.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. Figure 1 is a half-longitudinal cross-sectional view of a notch-type writing instrument when the writing instrument is stored,
The figure is a half-longitudinal cross-sectional view when the writing body is projected, and FIG. 3 is a developed view of the cam. 1... Knot type, 2... Clip, 3... Cursive, 4... Shaft tube, 5... Tip opening, 6... Bead, 7
... Window hole, 8 ... Presser spring, 9 ... Rotor, 10
...Cam, 11...Return spring.

Claims (1)

[Scope of utility model registration request] The knob body 1 and the clip 2 are integrated, and the knob body 1 and the cursive body 3 in front of it are inserted into the barrel 4.
A rotor 9 is loosely fitted between the knob body 1 and the rotor 9 is rotated in the circumferential direction and displaced in the axial direction by the operation of the knob on the inner surface of the shaft cylinder 4. A cam 10 is provided which makes the tip writing part of the writing body 3 appear and retract from the tip opening 5 of the barrel 4 by locking the cam 10, and the knock body 1 is moved forward by the knock operation to move the tip writing part of the writing body 3 into the tip opening 5 of the barrel 4. A window hole 7 into which a ball portion 6 provided at the front end of the clip 2 which has advanced together with the knob body 1 while protruding from the tip opening 5 can be inserted therein.
Alternatively, a concave portion is provided in the barrel 4, and when the knob 1 is pressed forward between the knob 1 and the barrel 4, and the tip writing part of the writing body 3 protrudes from the tip opening 5 of the barrel 4, the clip is inserted. 2. A grip-type writing implement characterized by interposing a presser spring 8 for fixing the position of the clip 2 and maintaining the state in which the ball portion 6 of the clip 2 is recessed into the window hole 7 or the recessed portion of the shaft tube 4.