CN101585281A

CN101585281A - Pencil

Info

Publication number: CN101585281A
Application number: CNA2009100999039A
Authority: CN
Inventors: 朱政; 朱博文; 林旭晖
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-16
Filing date: 2009-06-16
Publication date: 2009-11-25

Abstract

This invention discloses a pencil comprising a housing and a core inserted into the housing, wherein the housing and core are integrally molded; inner lateral of outlet at front end of the housing is set with a bayonet; the core is set with a lead clamp channel; front end of the core is set with an annular projection, and tail of the same is set with a rear end cap exposing from rear part of the housing; the annular projection is set with an inclined part matched with the bayonet; maximum diameter of the inclined part is greater than diameter of the bayonet; the core is set with an applying mechanism for making the inclined part be clamped in the bayonet. Accordingly, this pencil is simpler in structure and more convenient for fabrication.

Description

A kind of pencil

Technical field

The present invention relates to a kind of pencil.

Background technology

Notification number is CN1056563C, the day for announcing to be that the Chinese invention patent specification on September 20th, 2000 discloses a kind of propelling pencil, and this pencil comprises a protheca; A cap for brush is contained in to rotatable dismounting on the rear end of protheca; One is entered plumbous mechanism, is included in the protheca and like this to construct, and can plumbous L be advanced by the rotating drive of the cap for brush; Said propelling pencil also has one and is located at the back of plumbous mechanism into so that promote the rotating cam mechanism of plumbous operation, said rotating cam mechanism has a rotating cam and is used for following the rotation of the said cap for brush and rotates, and a cam cover can overcome the spring force skew and engages with said rotating cam.The shell of this pencil and inner core are made of a plurality of parts respectively, especially wherein to enter plumbous mechanism and rotating cam mechanism comparatively complicated, and be difficult to processing, so cost of labor and material cost are all higher.

Summary of the invention

Technical problem to be solved by this invention provides a kind of structure and is convenient to the pencil made more simply, more.

For this reason, pencil provided by the invention, comprise shell and inner core, the inner core sleeve is in shell, shell and inner core are one-body molded respectively, inboard, shell front end exit place is provided with bayonet socket, interior in-core has pencil-lead and clamps passage, the inner core front end has annular lug, the afterbody of inner core has rear end cap, and rear end cap is exposed to outside the shell rear portion, and annular lug has the rake with the bayonet socket coupling, the maximum gauge place of rake is greater than the diameter of bayonet socket, and inner core disposes and impels its rake to be clamped on the force application mechanism at bayonet socket place.

Because the shell and the inner core of pencil provided by the invention are one-body molded respectively, when lead for retractable pencil is arranged in the clamping passage of inner core, only need the effect by force application mechanism of the annular lug of inner core front end is clamped on the bayonet socket and just the inner core clamping can be write, adjusting or change lead for retractable pencil if desired only need control annular lug and make it break away from bayonet socket can to unclamp and clamp the clamping of passage to lead for retractable pencil, this structure has greatly been simplified the parts of pencil, only need whole shell and inner core to cooperate lead for retractable pencil just can form complete pencil, the clamping device structure of lead for retractable pencil is very simple in addition, thereby the manufacturing cost of this pencil of reduction that can be bigger, cost of labor especially wherein.

Description of drawings

Fig. 1 is the structure cross-sectional schematic of first kind of embodiment of pencil provided by the invention.

Fig. 2 is the structure cross-sectional schematic of second kind of embodiment of pencil provided by the invention.

In each accompanying drawing: 1, box body, 2, inner core, 3, bayonet socket, 4, clamp passage, 5, annular lug, 6, rake, 7, rear end cap, 8, first annular boss, 9, second annular boss, 10, spring part.

The specific embodiment

As shown in Figure 1, pencil provided by the invention comprises shell 1 and inner core 2, inner core 2 sleeves are in shell 1, shell 1 and inner core 2 are one-body molded respectively, inboard, shell 1 front end exit place is provided with bayonet socket 3, have pencil-lead in the inner core 2 and clamp passage 4, inner core 2 front ends have annular lug 5, the afterbody of inner core 2 has rear end cap 7, rear end cap 7 is exposed to outside shell 1 rear portion, annular lug 5 has the rake 6 with bayonet socket 3 couplings, the maximum gauge place of rake 6 is greater than the diameter of bayonet socket 3, and the minimum diameter place of rake 6 is less than the diameter of bayonet socket 3, and rake 6 tilts from outside to inside, beyond bayonet socket 3, inner core 2 disposes and impels its rake 6 to be clamped on the force application mechanism at bayonet socket 3 places the maximum gauge of rake 6 everywhere.For the annular lug 5 that impels pencil can keep being clamped on trend on the bayonet socket 3, the force application mechanism of inner core 2 configurations is the flexible restoring organ that is provided with between inner core 2 and the shell 1, flexible restoring organ is to pencil rear portion compressing inner core 2, and impel annular lug 5 to be clamped on bayonet socket 3 places, this flexible restoring organ can be to be stuck in first annular boss 8 of inner core 2 and the spring part 10 between second annular boss 9 on shell 1 inwall, and this structure can ensure that inner core 2 can clamp lead for retractable pencil at any time.Its using method is as follows: under the general state, inner core 2 is subjected to the effect of spring part 10, and its annular lug 5 is clamped on the bayonet socket 3, because the position of chucking is on the rake 6 of annular lug 5, therefore impels inner core 2 to clamp lead for retractable pencil; When needing replacing or adjusting lead for retractable pencil, only need push rear end cap 7, impel inner core 2 to overcome spring part 10, and then make the annular lug 5 of inner core 2 front ends break away from bayonet sockets 3, the clamping force disappearance that this moment, inner core 2 front ends were subjected to, the user can change or adjust lead for retractable pencil.

As shown in Figure 2, second kind of embodiment and first kind of embodiment of pencil provided by the invention are basic identical, its difference is: rake 6 tilts from inside to outside, the maximum gauge of rake 6 is everywhere in bayonet socket 3, the force application mechanism of inner core 2 configurations is a rear end cap 7, and rear end cap 7 is threaded with shell 1 rear end.When user's forward end is tightened rear end cap 7, can forward end promote inner core 2, thereby impel inner core 2 to clamp lead for retractable pencil.Its using method is as follows: under the general state, rear end cap 7 is tightened by forward end, and inner core 2 is pushed by rear end cap 7, impels the annular lug 5 of inner core 2 to be clamped on the bayonet socket 3, because the position of chucking is on the rake 6 of annular lug 5, therefore impel inner core 2 to clamp lead for retractable pencil; When needing replacing or adjusting lead for retractable pencil, only need turn rear end cap 7, make the annular lug 5 of inner core 2 front ends break away from bayonet sockets 3, the clamping force disappearance that this moment, inner core 2 front ends were subjected to, the user can change or adjust lead for retractable pencil.

Above-mentioned two kinds of embodiment provided by the invention all possess the simple advantage that does not influence use simultaneously of parts, for example the shell of traditional propelling pencil is generally the two-part structure, two sections employings are threaded, need back out leading portion when needing to change inner core 2 just can take out, two kinds of embodiment provided by the invention all can the peace of realization inner core 2 tear open under the prerequisite that does not adopt the two-part structure, the diameter at the pencil that first kind of embodiment provides maximum gauge place of its annular lug 5 after taking out lead for retractable pencil is less than the diameter of bayonet socket 3, thereby can take out inner core 2 from front end; And the aluminium pen that second kind of embodiment provides can be changed inner core 2 easily after backing out rear end cap 7.

Claims

1, a kind of pencil, comprise shell (1) and inner core (2), inner core (2) sleeve is in shell (1), it is characterized in that: shell (1) and inner core (2) are one-body molded respectively, inboard, described shell (1) front end exit place is provided with bayonet socket (3), have pencil-lead in the described inner core (2) and clamp passage (4), inner core (2) front end has annular lug (5), the afterbody of inner core (2) has rear end cap (7), rear end cap (7) is exposed to outside shell (1) rear portion, annular lug (5) has the rake (6) with bayonet socket (3) coupling, the maximum gauge place of rake (6) is greater than the diameter of bayonet socket (3), and described inner core (2) disposes and impels its rake (6) to be clamped on the force application mechanism that bayonet socket (3) is located.

2, pencil according to claim 1 is characterized in that: the minimum diameter place of rake (6) is less than the diameter of bayonet socket (3)

3, pencil according to claim 1 and 2 is characterized in that: described rake (6) tilts from outside to inside, and the maximum gauge of rake (6) everywhere in bayonet socket (3) in addition.

4, pencil according to claim 3, it is characterized in that: the force application mechanism of described inner core (2) configuration is the flexible restoring organ that is provided with between inner core (2) and the shell (1), flexible restoring organ is oppressed inner core (2) to the pencil rear portion, and impels annular lug (5) to be clamped on bayonet socket (3) and locate.

5, pencil according to claim 1 and 2 is characterized in that: described rake (6) tilts from inside to outside, and the maximum gauge of rake (6) is everywhere in bayonet socket (3).

6, pencil according to claim 5 is characterized in that: the force application mechanism of described inner core (2) configuration is rear end cap (7), and rear end cap (7) is threaded with shell (1) rear end.