CN212796335U - Oil ball-point pen - Google Patents

Abstract

The utility model relates to an oil ball-point pen, it includes pen-holder, presses and presses cover, refill and spring. The pressing sleeve is composed of a pressing section and a limiting fixing section. An accommodating cavity extends upwards from the bottom wall of the limiting fixing section. The pen core is arranged in the accommodating cavity and is inserted into the pen holder as a whole together with the pressing sleeve. The pen core is provided with a blocking protrusion for limiting the spring. The pressing sleeve is provided with an elastic clamping arm which is formed by extending the side wall of the limiting and fixing section outwards in an inclined way. An upper limiting notch and a lower limiting notch extend outwards from the side wall of the mounting cavity just corresponding to the limiting fixed section. An elastic pen clip extends from the outer side wall of the pen holder. An abutting protrusion is continuously and inwardly extended from the inner side wall of the elastic pen clip just corresponding to the lower limiting notch. Thus, the oil-based ball-point pen comprises fewer design parts, and is beneficial to production, manufacturing and subsequent assembly. In addition, the automatic telescopic function of the pen core is easy to realize, and the execution process is very smooth.

Description

Oil ball-point pen

Technical Field

The utility model belongs to the technical field of the stationery manufacturing technique and specifically relates to an oil ball-point pen.

Background

An oil-based ball pen or ballpoint pen is a writing tool which uses dry and thick ink and is transferred to paper by means of the steel ball which is freely rotated on a pen point, has the advantages of no leakage, no influence from weather, long writing time, no need of frequent ink filling and the like, has low price and is the most popular writing tool in recent years.

At present, the oil ball pen on the market has a complex structure, and mainly comprises a pen holder, a pressing sleeve, a pen core, a spring, an automatic telescopic locking mechanism and the like. The automatic telescopic locking mechanism comprises a locking piece, a pressure lever and a built-in guide rail fixed in the inner cavity of the pen holder. The bottom end face of the guide rail is provided with an inclined plane. The locking piece and the pressure rod are arranged in the inner cavity of the pen holder and are sequentially arranged along the up-down direction. The upper end part of the locking piece is provided with a sawtooth-shaped clamping groove, and correspondingly, the lower end part of the pressure rod is provided with sawtooth-shaped clamping teeth which are matched with the sawtooth-shaped clamping groove. When the pressing rod is pressed down and then ascends, the locking piece is subjected to the action of a spring force of a spring arranged at the tail end of the refill and performs circumferential rotation motion along the inclined plane, and then the sawtooth-shaped clamping teeth fall into the sawtooth-shaped clamping grooves to realize the extension and locking of the refill; the depression bar pushes down once more, and the in-process that rises afterwards, the locking piece carries out reverse circumference rotary motion along above-mentioned inclined plane once more, then the zigzag latch falls into in another adjacent zigzag draw-in groove, realizes that the refill retracts. As can be seen from the above description, the oil-based ball-point pen of the above design structure includes many parts, which makes the assembly steps complicated and is not conducive to the improvement of the production efficiency; furthermore, in order to realize the locking function, the locking piece, the pressure bar and the pen holder need complicated design structures (such as the sawtooth-shaped clamping groove and the sawtooth-shaped clamping teeth), and need higher manufacturing accuracy and counterpoint accuracy, thereby increasing the production cost of the oil ball pen. In addition, when a user executes the telescopic operation of the pen core, the phenomenon of clamping stagnation is easy to occur, so that the comfort of the customer experience is influenced to a certain extent. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structural design is simple, is convenient for make implementation, and the equipment step is simple, and is convenient for realize the automatic oily ballpoint of flexible locking function.

In order to solve the technical problem, the utility model relates to an oil ball-point pen, it includes the pen-holder, presses cover, refill and spring. An installation cavity is arranged in the penholder. The lower end of the mounting cavity is provided with a necking part. Along from top to bottom direction, press the cover and constitute by pressing section and spacing fixed segment in proper order. An accommodating cavity extends upwards from the bottom wall of the limiting fixing section. The refill is placed in the accommodating cavity and is inserted into the mounting cavity along the direction from top to bottom together with the pressing sleeve. Near the lower end of the pen core, at least one blocking protrusion extends outwards around the outer side wall of the pen core. The spring is sleeved on the refill, the upper end of the spring is elastically propped against the blocking protrusion, and the lower end of the spring is elastically propped against the necking part. The pressing sleeve is provided with an elastic clamping arm which is formed by extending the side wall of the limiting and fixing section outwards in an inclined way. The free end of the elastic clamping arm is provided with a horizontally arranged limiting block. An upper limiting notch and a lower limiting notch which are matched with the horizontally arranged limiting block extend outwards from the side wall of the mounting cavity just corresponding to the limiting fixed section. An elastic pen clip extends from the outer side wall of the pen holder. An abutting protrusion is continuously and inwardly extended from the inner side wall of the elastic pen clip just corresponding to the lower limiting notch.

As a further improvement of the technical scheme of the utility model, the inclined plane that slides is set up on putting the stopper horizontally. The sliding inclined plane is formed by beveling the bottom wall of the horizontally-arranged limiting block, and the inclined angle of the sliding inclined plane relative to the horizontal plane is controlled to be 30-45 degrees.

As the technical scheme of the utility model is further improved, above-mentioned pen-holder is preferred integrative injection molding, and elastic pen presss from both sides direct molding promptly on it.

As the technical proposal of the utility model is further improved, the oil ball pen also comprises a metal reinforcing piece which is fixed on the outer side wall of the necking part.

As a further improvement of the technical solution of the present invention, the metal reinforcement is preferably a metal sleeve, which is sleeved on the lower portion of the throat portion.

Of course, as a modified design of the above technical solution, the metal reinforcing member may also be a metal split ring, and correspondingly, a mounting groove adapted to the outer shape of the metal split ring is formed around the side wall of the necking portion.

As the utility model discloses technical scheme's further improvement is close to the throat position, has a plurality of anti-skidding recesses around the lateral wall equipartition of pen-holder.

As a further improvement of the technical scheme of the utility model, the pressure relief groove is just seted up to the refill, on the roof that holds the chamber. The number of the pressure relief grooves is set to be a plurality of, and the pressure relief grooves are arranged in a criss-cross manner

Compare in the oily ballpoint of traditional project organization the utility model discloses an among the technical scheme, it contains less design part, does benefit to and produces, and the follow-up equipment of being convenient for to the manufacturing cost of oily ballpoint has been reduced effectively. In addition, more importantly, the automatic telescopic function of the pen core is easy to realize, the execution process is very smooth, the writing operation is convenient, and therefore the comfort of user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a first embodiment of an oil-based ballpoint pen of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a sectional view B-B of fig. 2.

Fig. 4 is an enlarged view of part I of fig. 3.

Fig. 5 is a schematic perspective view of a pen holder in the first embodiment of the oil-based ballpoint pen of the present invention.

Fig. 6 is a side view of fig. 5.

Fig. 7 is a schematic perspective view of a pressing sleeve in the first embodiment of the oil-based ballpoint pen of the present invention.

Fig. 8 is a side view of fig. 7.

Fig. 9 is a schematic perspective view of a cartridge in the first embodiment of the oil-based ballpoint pen of the present invention.

Fig. 10 is a perspective view of a spring in the first embodiment of the oil-based ballpoint pen of the present invention.

Fig. 11 is a schematic perspective view of a second embodiment of the medium oil ball-point pen of the present invention.

Fig. 12 is a view from direction a of fig. 11.

Fig. 13 is a partial enlarged view II of fig. 11.

Fig. 14 is a perspective view schematically showing a third embodiment of an oil-based ballpoint pen of the present invention.

Fig. 15 is a partially enlarged view III of fig. 14.

1-a pen holder; 11-a mounting cavity; 111-a throat; 112-upper limit notch; 113-lower limit notch; 12-an elastic pen clip; 121-abutting against the bulge; 13-anti-slip groove; 2-pressing the sleeve; 21-pressing section; 22-a limit fixing section; 221-an accommodation cavity; 2211-pressure relief groove; 222-a resilient snap arm; 2221-horizontally placing a limited block; 22211-glide slope; 3-a pen core; 31-a stop-against projection; 4-a spring; 5-a metal reinforcement; 51-a metal sleeve; 52-Metal Split Ring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Fig. 1, 2 and 3 show a schematic perspective view, a front view and a sectional view B-B of a first embodiment of the oil-based ballpoint pen of the present invention, and it can be seen that the ball-point pen mainly comprises a pen shaft 1, a pressing sleeve 2, a cartridge 3, a spring 4 and the like. An installation cavity 11 is arranged in the penholder 1. A throat portion 111 is provided at the lower end of the mounting cavity 11. Along the direction from top to bottom, the pressing sleeve 2 is composed of a pressing section 21 and a limiting fixing section 22 in sequence. An accommodating cavity 221 extends upwards from the bottom wall of the limiting fixing section 22. The cartridge 3 is inserted into the receiving cavity 221 and inserted into the mounting cavity 11 from the top down together with the pressing sleeve 2. Near its lower end, around the outer side wall of the cartridge 3, at least one stop projection 31 extends outwards. The spring 4 is sleeved on the refill 3, and the upper end thereof elastically abuts against the stop protrusion 31, and the lower end thereof elastically abuts against the inside of the throat 111. The pressing sleeve 2 is provided with an elastic clamping arm 222 formed by extending the side wall of the position-limiting fixing section 22 obliquely outwards. A flat stopper 2221 is provided at the free end of the elastic catching arm 222. An upper limiting notch 112 and a lower limiting notch 113 which are matched with the horizontally-arranged limiting block 2221 extend outwards from the side wall of the mounting cavity 11 and correspond to the limiting fixing section 22. An elastic pen clip 12 extends from the outer side wall of the pen holder 1. An abutting protrusion 121 (shown in fig. 4-10) extends from the inner sidewall of the elastic pen clip 12 corresponding to the lower limiting notch 113. In the actual use process, the relative position relationship of the flat stopper 2221 is changed by abutting against the protrusion 121 to realize the extending and retracting actions of the pen core 3. As can be seen from the above description, the oil-based ball-point pen includes fewer design parts, facilitates manufacturing, and facilitates subsequent assembly, thereby effectively reducing the manufacturing cost of the oil-based ball-point pen. In addition, more importantly, the automatic telescopic function of the pen core 3 is easy to realize, the execution process is very smooth, the writing operation is convenient, and therefore the comfort of user experience is improved.

The working principle of the oil-based ball-point pen is as follows: when the horizontally-arranged limiting block 2221 is positively clamped in the upper limiting notch 112, the pen core 3 is retracted into the pen holder 1; when writing is needed, the pressing sleeve 2 is pressed downwards continuously until the horizontally-arranged limiting block 2221 is separated from the upper limiting notch 112, the downwards-arranged limiting block moves in a directional displacement manner until the horizontally-arranged limiting block 2221 is clamped in the lower limiting notch 113, and at the moment, the pen core 3 extends out of the pen holder for a certain distance to write; when the refill 3 needs to be retracted into the pen holder 1 again, the elastic pen clip 12 is pressed to press the horizontally-arranged limiting block 2221 in the abutting protrusion 121, and at this time, the horizontally-arranged limiting block 2221 is forced to retract inwards to be separated from the lower limiting notch 113, and moves upwards in a directional displacement manner under the elastic force of the spring 4 until being clamped in the upper limiting notch 112 again, so that the retraction of the refill 3 is completed.

As a further optimization of the above oil-based ball-point pen structure, a sliding inclined surface 22211 may be provided on the horizontal position-limiting stopper 2221. The sliding inclined surface 22211 is formed by chamfering the bottom wall of the horizontal position limiting block 2221, and the inclination angle thereof with respect to the horizontal plane is controlled to be 30 to 45 ° (as shown in fig. 7 and 8). Thus, when the pressing sleeve 2 is pressed downward, the horizontal position-limiting block 2221 can be conveniently pulled out from the upper limiting notch 112, so that the phenomenon of "sticking" can be avoided as much as possible, and the use comfort of the oil-based ball-point pen can be ensured.

In view of reducing the manufacturing cost and securing the elastic clip 12, the barrel 1 is preferably an integrally molded part, and the elastic clip 12 is directly molded thereon (as shown in fig. 5 and 6).

Furthermore, a plurality of anti-slip grooves 13 (as shown in fig. 5 and 6) are uniformly distributed around the outer side wall of the pen holder 1 near the necking part 111, so that the oil-based ball pen can be reliably clamped by a user, and the phenomenon of 'slipping' is prevented.

Fig. 11 is a schematic perspective view showing a second embodiment of the medium oil ball pen of the present invention, which is different from the first embodiment in the following two points: 1) a pressure relief groove 2211 is formed in the top wall of the accommodating cavity 221 opposite to the cartridge 3. The relief grooves 2211 are provided in plural in number and arranged crisscross to each other (as shown in fig. 12). The existence of the pressure relief groove 2211 can effectively prevent the pen core 3 from generating negative pressure in the writing process, and ensure that the ball bearings smoothly bring out the ink in the writing process so as to ensure the writing fluency; 2) the metal reinforcing piece 5 is additionally arranged on the penholder 1, and more specifically, the metal reinforcing piece is as follows: a metal sleeve 51 is fitted over the lower portion of the throat 111 and is preferably secured in an adhesive manner (as shown in fig. 13). By adopting the technical scheme, the expansion or crack phenomenon of the necking part 111 when the writing force is too large can be effectively prevented. Therefore, on one hand, the reliable clamping of the necking part 111 to the head of the pen core 3 is ensured, and the smooth writing is ensured; on the other hand, the oil-based cylindrical pen is ensured to have longer service life.

Fig. 14 is a perspective view showing a third embodiment of the oil-based ballpoint pen of the present invention, which is different from the second embodiment in that a metal reinforcing member 5, preferably a metal split ring 52, is used to reinforce the necking portion 111, and the specific scheme is as follows: an annular mounting groove is formed around the side wall of the throat 111 into which the metal snap ring 52 is snapped (as shown in fig. 15). This also serves to prevent the "bulging" or "cracking" of the constricted portion 111 when the writing force is too large.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. An oil ball pen is characterized by comprising a pen holder, a pressing sleeve, a pen core and a spring; an installation cavity is arranged in the penholder; a necking part is arranged at the lower end part of the mounting cavity; along the direction from top to bottom, the pressing sleeve is sequentially composed of a pressing section and a limiting fixing section; an accommodating cavity extends upwards from the bottom wall of the limiting and fixing section; the pen core is placed into the accommodating cavity and is inserted into the mounting cavity along the direction from top to bottom as a whole with the pressing sleeve; at least one blocking and leaning protrusion extends outwards around the outer side wall of the pen core near the lower end part of the pen core; the spring is sleeved on the refill, the upper end part of the spring is elastically propped against the blocking protrusion, and the lower end part of the spring is elastically propped against the inside of the necking part; the pressing sleeve is provided with an elastic clamping arm which is formed by extending the side wall of the limiting and fixing section outwards and obliquely; a horizontally-arranged limiting block is arranged at the free end of the elastic clamping arm; an upper limiting notch and a lower limiting notch which are matched with the horizontally arranged limiting block extend outwards from the side wall of the mounting cavity corresponding to the limiting fixed section; an elastic pen clip extends from the outer side wall of the pen holder; and a propping bulge is continuously and inwards extended from the inner side wall of the elastic pen clip just corresponding to the lower limiting notch.

2. The oil-based ballpoint pen as described in claim 1, wherein a slide slope is provided on said flat stopper; the sliding inclined plane is formed by beveling the bottom wall of the horizontally-arranged limiting block, and the inclined angle of the sliding inclined plane relative to the horizontal plane is controlled to be 30-45 degrees.

3. The oil-based ballpoint pen as claimed in any one of claims 1 to 2, wherein the barrel is an integrally molded part and the elastic clip is directly molded thereon.

4. The oil-based ballpoint pen as claimed in claim 3, further comprising a metal reinforcing member fixed to an outer side wall of said throat portion.

5. The oil-based ballpoint pen as described in claim 4, wherein said metal reinforcing member is a metal sleeve fitted over a lower portion of said throat portion.

6. The oil-based ball-point pen according to claim 4, wherein the metal reinforcement is a metal split ring, and correspondingly, a mounting groove matched with the outer shape of the metal split ring is formed around the side wall of the throat part.

7. The oil-based ball-point pen according to claim 3, wherein a plurality of non-slip grooves are uniformly formed around the outer side wall of the barrel near the throat portion.

8. An oil-based ballpoint pen as described in claim 3, wherein a pressure relief groove is provided on a top wall of said housing chamber opposite to said refill; the number of the pressure relief grooves is set to be a plurality of, and the pressure relief grooves are arranged in a criss-cross mode.

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