CN2402491Y

CN2402491Y - Writing-core press auto-spring structure

Info

Publication number: CN2402491Y
Application number: CN 00201494
Authority: CN
Inventors: 林家雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-01
Filing date: 2000-02-01
Publication date: 2000-10-25
Anticipated expiration: 2010-02-01

Abstract

The utility model relates to an automatic spring structure by pressing a pen core, which is composed of a pen tube, a pen core, a return elastic element, and a pressing element. The pressing element is arranged on the open end of the pen tube and is composed of an upper cap body and a key clamping tube. One side of the upper cap body extends a pen clip outwards, and the end of the inner surface corresponding to a positioning hole of the pen tube is provided with a projecting part. The key clamping tube is sheathed inside the open end, and a part is exposed and is sheathed inside the pen core. The side wall thereof is provided with an elastic inverse hook body, and the end thereof is provided with a buckle part. The key clamping tube can be pressed to cause the buckle part to disengage from a clamping hole and to slide in the positioning hole. The pen core is in a bending form to cause a writing part to expose. When the pen clip is pressed, the projecting part extrudes the buckle part to disengage from the positioning hole. Under the elastic action of the element, the pen core and the inverse hook body can be moved upwards until the buckle part is clamped inside the clamping hole.

Description

Pencil lead is pushed the structure of automatic spring

The utility model relates to the structure that a kind of pencil lead is pushed automatic spring, refer in particular to and a kind ofly in a hollow shaft of a writing brush, be provided with a pencil lead, this shaft of a writing brush is provided with a press element with respect to the other end of writing end, so that by pushing this press element, can allow the writing portion of pencil lead protrude the shaft of a writing brush, or in the retraction shaft of a writing brush.The utility model belongs to a tool field.

See widely around people's life by general habitual push-button type mechanical pencil, see also known pencil lead shown in Figure 1 and push automatic spring structure, its action principle is as follows: be provided with an outward extending pen clip A11 at a hollow shaft of a writing brush A10 one end, this pen clip A11 inner face end is established the protruding grain of contact A12, and shaft of a writing brush A10 establishes a locating hole A13 corresponding to the surface of the protruding grain of contact A12, and its appropriate location, top is established a stop hole A14 in addition.In addition, be provided with a pencil lead A15 in the shaft of a writing brush A10, the one end is provided with a writing portion A16, and contiguous writing portion A16 is symmetrical arranged a pair of fin A17, and a returning spring A18 is arranged between shaft of a writing brush A10 inner edge and the two fin A17, pencil lead A15 end in addition then is contained in one and is located at and pushes spring assembly A20 in the shaft of a writing brush A10 open top end, and this is pushed spring assembly A20 one side and is provided with one and pushes headpin A21, this is pushed headpin and exposes outside shaft of a writing brush A10, can be for pushing usefulness; This pushes headpin A21 extension one fore-set A22 downwards in addition, and its sidewall is provided with an outwards little curved outstanding oblique flexible barb shell fragment A23, and this barb shell fragment A23 grab is in stop hole A14.

After the said elements combination, mat is pushed this and is pushed headpin A21, can allow barb shell fragment A23 break away from stop hole A14, and slips into locating hole A13 location, so that the writing portion A16 of pencil lead A15 is exposed at outward outside the shaft of a writing brush A10.As the protruding grain of the contact of pushing pen clip A11 A12 extruding barb shell fragment A23, just can make barb shell fragment A23 break away from locating hole A13.At this moment,, make pencil lead A15 together with moving on the barb shell fragment A23 by the elastic reaction of returning spring A18, and with barb shell fragment A23 grab in stop hole A14.But this habitual pencil lead is pushed automatic spring structure and is had following shortcoming:

1. the pencil lead length of this prior art is restricted, be that pencil lead must cooperate shaft of a writing brush length, but also be limited by the space that is provided with of pushing the spring assembly, so pencil lead length is shorter, can't make a cap type tool of general employing standard specification pencil lead (about 14 centimeters), so that when changing pencil lead, can only use the pencil lead of special requirement.

2. because pencil lead length is shorter,, be restricted owing to writing length during use, only about 1500 meters,, can't compare with standard specification pencil lead (write length and can reach about 2500 meters) so a tool life-span is shorter so it is less to include ink.

3. the pushing the spring assembly and must be assembled in the shaft of a writing brush of this prior art and must offset with pencil lead, thus cause assembling difficult, puzzlements such as manufacturing cost increase.

Because habitual pencil lead is pushed these disappearances of automatic spring structure, makes the on the high side of push-button type mechanical pencil, and can't replace a general cap type tool.And the shortcoming that a general cap type tool has cap easily to lose.

The purpose of this utility model is to provide a kind of pencil lead to push automatic spring structure, makes the pencil lead length of its available general standard specification write the life-span with increase, can simplify assembling to reduce its manufacturing cost simultaneously.

The technical scheme of implementing the utility model above-mentioned purpose and taking is as described below: this pencil lead is pushed automatic spring structure by a shaft of a writing brush, one pencil lead, an one elasticity recovery element and a press element are formed, wherein this press element is provided in a side of shaft of a writing brush openend, and form by a upper cover body and a card key pipe, this upper cover body is set in the openend periphery versatilely, the one epitaxial lateral overgrowth is stretched a pen clip, this pen clip inner face end is established a rostellum portion corresponding to shaft of a writing brush position of positioning hole, and card key Guan Ze is inserted in the openend, the part of wherein Gong pushing is exposed openend, the hollow tube that this card key Guan Weiyi is inserted in for pencil lead, its sidewall is established a resilient barb body, and this barbed body end is provided with a button teat; This button teat is set as and breaks away from stop hole when pushing card key pipe, and slips into location in the locating hole, and the then oppressed bending that is of pencil lead exposes at writing end writing portion; Pen clip rostellum portion is set as can push the button teat that is contained in locating hole and break away from locating hole, and by the elasticity recovery element and be the elastic reaction of bending pencil lead, on move pencil lead together with barbed body until its button teat grab in stop hole.This elasticity recovery element can be a spring; This upper cover body can be made with the shaft of a writing brush one-body molded.

Now the embodiment shown in conjunction with the accompanying drawings pushes automatic spring structure to the utility model pencil lead and is further described.Wherein

Fig. 1 pushes the profile of automatic spring structure for habitual pencil lead;

Fig. 2 pushes the three-dimensional exploded view of automatic spring structure for the utility model pencil lead;

Fig. 3 shows not pressed state for the profile after Fig. 2 combination;

Fig. 4 is the profile after Fig. 2 combination, shows and is carrying out pressed state.

Shown in Fig. 2 to 4, the utility model pencil lead is pushed the structure of automatic spring and mainly is made up of a shaft of a writing brush 1, a pencil lead 2, an elasticity recovery element 3 and a press element 4,

Wherein, the shaft of a writing brush 1 is roughly with habitual identical, and is hollow form, and an end has an openend 11, and end is provided with a taper writing end 12 in addition, and these shaft of a writing brush 1 nearly openend 11 surfaces are provided with a locating hole 13, and this appropriate location, locating hole 13 top is established a stop hole 14 in addition.

2 of pencil leads are placed in the shaft of a writing brush 1, and the one end has a writing portion 21, and contiguous writing portion 21 is symmetrical arranged a pair of fin 22, and pencil lead 2 end in addition then is contained in the aftermentioned press element 4.This pencil lead 2 adopts the pencil lead of standard specification when implementing, but the more printing ink of filling is write length with increase and reached 2500 meters approximately, so can increase service life.

Elasticity recovery element 3 is an elastomer, is good with spring during enforcement, and is placed between writing end 12 inner edges and two fins 22, can stretch and compress.

Press element 4 of the present utility model is provided in a side of the openend 11 of the shaft of a writing brush, it is different from known is to be, this press element 4 is made up of a upper cover body 41 and a card key pipe 42, this upper cover body 41 is set in openend 11 peripheries versatilely, the one epitaxial lateral overgrowth is stretched a pen clip 411, and these pen clip 411 inner face ends are established a rostellum portion 412 corresponding to locating hole 13 positions, and card key pipe 42 then is inserted in the openend 11, wherein partly expose at openend 11, can be for pushing usefulness.And card key pipe 42 is a hollow tube, can supply being inserted in of pencil lead 2, and its sidewall is provided with a resilient barb body 421, and its terminal prominent button teat 422 of establishing can be buckled in locating hole 13 and stop hole 14 respectively.In addition, the utility model is when implementing, and this upper cover body 41 can be made with the shaft of a writing brush 1 one-body molded.

After the said elements combination, see also Fig. 4, when pushing card key pipe 42, can allow the button teat 422 of barbed body 421 break away from stop hole 14, and slip in the locating hole 13, to form the location, the then oppressed bending that is of pencil lead 2 exposes outside writing end 12 writing portion 21, can write.Please consult Fig. 3 again, when pushing pen clip 411, make 412 extruding of rostellum portion be positioned at the button teat 422 of locating hole 13, make it break away from locating hole 13, and by elasticity recovery element 3 and be the elastic reaction of bending pencil lead 2, pencil lead 2 is moved up together with barbed body 421, and then make button teat 422 grabs in stop hole 14.At this moment, pencil lead 2 returns back to original straight shape.Therefore, when people will write, writing portion 21 can be extruded outside the shaft of a writing brush 1, when not intending writing, then can be with in the writing portion 21 retraction shafts of a writing brush 1.

Via enforcement of the present utility model, pencil lead is the pencil lead that adopts gauge length, and is also promptly isometric with the pencil lead of a cap type tool, makes to write length and can reach about 2500 meters, and the service life of a tool is longer.In addition, comparatively convenient when changing pencil lead, the unlikely pencil lead that is subject to special requirement.Moreover mat elastic recovery element and be the elastic reaction of bending pencil lead can allow pencil lead move in the lump together with card key pipe, and has the service life more than 100,000 times at least; Because empty calorie key pipe is the pencil lead of ccontaining standard specification in of the present utility model, and barbed body is not oblique extension, so elasticity that must be when being the bending pencil lead barbed body and the action of button teat are provided is a big fine piece of writing not seen before in fact.And this press element is simple in structure and assembling is easy, can produce in a large number, makes the utility model manufacturing cost be lower than a cap type tool, so can replace a traditional cap type tool.

The utility model disclosed is one of preferred embodiment, and Ju Bu change or modification and come from the utility model technical conceive and be to know this technical staff to be easy to know by inference such as all do not break away from patent right category of the present utility model.

Claims

1. a pencil lead is pushed the structure of automatic spring, this structure is made up of a shaft of a writing brush, a pencil lead, an elasticity recovery element and a press element, this shaft of a writing brush is hollow form, the one end has an openend, end is provided with a taper writing end in addition, this shaft of a writing brush surface is provided with a locating hole, and this appropriate location, locating hole top is provided with a stop hole in addition; Pencil lead then is placed in the shaft of a writing brush, and the one end has a writing portion, and contiguous writing portion is symmetrical arranged a pair of fin, and an elasticity recovery element is placed between writing end inner edge and two fins, and pencil lead is held in addition and then is contained in the press element;

It is characterized in that, this press element is provided in a side of shaft of a writing brush openend, and be made up of a upper cover body and a card key pipe, this upper cover body is set in the openend periphery versatilely, and the one epitaxial lateral overgrowth is stretched a pen clip, in this pen clip and terminally establish a rostellum portion corresponding to shaft of a writing brush position of positioning hole, and card key Guan Ze is inserted in the openend, and the part of wherein Gong pushing is exposed openend, the hollow tube that this card key Guan Weiyi is inserted in for pencil lead, its sidewall is provided with a resilient barb body, and this barbed body end is provided with a button teat; This button teat is set as and breaks away from stop hole when pushing card key pipe, and slips into location in the locating hole, and the then oppressed bending that is of pencil lead exposes at writing end writing portion; Pen clip rostellum portion is set as can push the button teat that is contained in locating hole and break away from locating hole, and by the elasticity recovery element and be the elastic reaction of bending pencil lead, on move pencil lead together with barbed body until its button teat grab in stop hole.

2. pencil lead as claimed in claim 1 is pushed the structure of automatic spring, it is characterized in that, this elasticity recovery element can be a spring.

3. pencil lead as claimed in claim 1 is pushed the structure of automatic spring, it is characterized in that, this upper cover body can be made with the shaft of a writing brush one-body molded.