CN202480615U

CN202480615U - Cylindrical pencil protecting bush

Info

Publication number: CN202480615U
Application number: CN201120335626XU
Authority: CN
Inventors: 张意立
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-27
Filing date: 2011-08-27
Publication date: 2012-10-10
Anticipated expiration: 2021-08-27

Abstract

The utility model discloses a cylindrical pencil protecting bush, wherein a cylindrical pencil 5 passes through an axis round hole 15 of a cylindrical pencil protecting bush 1. The cylindrical pencil protecting bush is characterized in that a spherical surface finger pressing cover 3 is connected with a square tube 27 and a pointed cone 21, and the pointed cone 21 butts against the cylindrical pencil 5; a spring 4 is pushed towards a rear plane 31 of the spherical surface finger pressing cover 3; and the rear plane 31 is connected with the square tube 27 and pulls the pointed cone 21 and is separated from the cylindrical pencil 5, thus the cylindrical pencil 5 can be moved and regulated on an axis line. By adopting the novel structure that the cylindrical pencil protecting bush 1 and a pencil outer cylinder 51 are slidingly matched and the rear plane 31 is pushed to the spherical surface finger pressing cover 3 by the spring 4, and the rear plane 31 is connected with the square tube 27 and pulls the pointed cone 21 and is separated from the cylindrical pencil 5, a pencil head can be used up to the length of 3cm at minimum, not only are materials saved, but also the hand feel for gripping the pencil is comfortable.

Description

A kind of cylinder Pencil cap

Technical field

The utility model relates to a kind of stationery, but a kind of cylinder Pencil cap of particularly a kind of economical with materials, comfortable feel.

Background technology

Pencil is not only pupil's main writing implement, also is one of marking pen the most frequently used in people's routine work, the study.Pencil on the market mostly is synthetic by carbon-point core and wooden shell now; Particularly the carpenter is with pen; All be to present circular cylinder pencil with a kind of gabarit, and after using half, because of too short being difficult to more holds a pen; Usually see that the pencil stub that people will also leave 8,9 centimeter length abandons, and causes very big waste.

Summary of the invention

The purpose of the utility model provides a kind of cylinder Pencil cap, and it is not enough to have overcome prior art, adopts a kind of special-purpose sheath of cylinder pencil that the cylinder point protector is got up to use, and realization economical with materials, feel are more comfortable.

To achieve these goals; The utility model adopts following technical scheme: a kind of cylinder Pencil cap; Cylinder pencil 5 penetrates the axle center circular hole 15 of cylinder Pencil cap 1, as improvement: sphere finger gland 3 in succession square tube 27 and pointed cone 21, pointed cone 21 withstands cylinder pencil 5; Spring 4 is pushed the tool back plane 31 of sphere finger gland 3 to, and tool back plane 31 square tube 27 of ining succession hauls pointed cone 21 and breaks away from cylinder pencils 5, makes cylinder pencil 5 can on axial line, move adjusting.

As further improvement: on axle center circular hole 15 walls of described cylinder Pencil cap 1 two square holes 17 are arranged; The inner of square hole 17 is vertical recessed rectangular slot 16; The outer end of square hole l7 is an outerplanar 13; Both sides respectively are provided with two spring eyes 14 of symmetry, and the outline of cylinder Pencil cap 1 is made up of

concave arc

18 and 19 of convex arcs.

As further improvement: fixedly an in succession end of square tube 27 of the tool back plane 31 of described sphere finger gland 3; Fixedly in succession vertical rectangle back side 26 of pointed cone 21 of the other end of square tube 27; Is matched in clearance between the rectangle back side 26 and the vertical recessed rectangular slot 16 vertically, between square tube 27 and the square hole 17 for being slidingly matched.

When the sphere finger gland 3 that the finger that holds a pen is pressed both sides is ined succession after square tube 27 power transmissions fix cylinder pencil 5 to pointed cone 21 tool back plane 31 convergence outerplanars 13; Unclamp finger; Being wedged in spring 4 in the spring eye 14 pushes the tool back plane 31 of sphere finger gland 3 square tube 27 of ining succession to and hauls pointed cone 21 and break away from cylinder pencils 5 at spring fixing feet 34 places; Make cylinder pencil 5 on axial line, to move, stop to move when pasting vertical recessed rectangular slot 16 at the vertical rectangle back side 26.No matter cylinder pencil 5 is that length is short; Always can moving through circular hole 15 in the axle center; Find the most suitable Writer's pencil outside cylinder 51 the amounts of exposing, make pencil sharper cone 55 be in optimal position, can the weak point of pencil stub can be used 3 centimeter length in the lower end; Not only saved material, and the comfortable feel that holds a pen.

The utility model beneficial effect is: adopt cylinder Pencil cap 1 to adopt with an outside cylinder 51 and be slidingly matched; Push the tool back plane 31 of sphere finger gland 3 in conjunction with spring 4; Tool back plane 31 square tube 27 of ining succession hauls the novel structure that pointed cone 21 breaks away from cylinder pencils 5; Can the weak point of pencil stub can be used 3 centimeter length, not only save material, and the comfortable feel that holds a pen.The utility model is novel, easy to use, simple in structure and be convenient to make and promote.

Description of drawings

Fig. 1 is the profile that the utility model is crossed central axis;

Fig. 2 is the outside drawing of cylinder Pencil cap 1 in the utility model;

Fig. 3 is the profile of A-A among Fig. 1;

Fig. 4 is in succession square tube 27 and pointed cone 21 whole shaft side figures of sphere finger gland 3 in the utility model;

Fig. 5 is the sphere finger gland 3 whole side view of square tube 27 and pointed cone 21 of ining succession;

Fig. 6 is the opposite side view that differs 90 degree with Fig. 5;

Fig. 7 is the vertical view of Fig. 6;

Fig. 8 is the utility model and the outside drawing that is used than long cylinder pencil 5;

Fig. 9 is the utility model and the profile that is used than short cylinder pencil 5;

Figure 10 is the profile of B-B among Fig. 9.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing describes in further detail the utility model:

A kind of cylinder Pencil cap; Cylinder pencil 5 penetrates the axle center circular hole 15 of cylinder Pencil cap 1, and the finger that holds a pen is pressed the sphere finger gland 3 of both sides, and sphere finger gland 3 is ined succession square tube 27 power transmissions to pointed cone 21; Pointed cone 21 is fixed cylinder pencil 5, writes solid firm; Unclamp and point the tool back plane 31 that spring 4 is then pushed sphere finger gland 3 to, tool back plane 31 square tube 27 of ining succession hauls pointed cone 21 and breaks away from cylinder pencils 5, makes cylinder pencil 5 on axial line, to move.

This instance adopts: two 3 * 3 millimeters square square holes 17 are arranged on axle center circular hole 15 walls of cylinder Pencil cap 1; The inner of square hole 17 is 2 millimeters vertical recessed rectangular slots 16 of the degree of depth; The outer end of square hole 17 is on convex arc 19 formed maximum gauges, to scabble 2 millimeters; Produce the outerplanar 13 of 10 millimeters round shapes of a minimum widith; Both sides respectively are provided with the spring eye 14 of 2 millimeters of two diameters of symmetry, 12 millimeters of the minimum diameters that the outline of cylinder Pencil cap 1 is made up of concave arc 18 and convex arc 19, the vase-like curved body that maximum gauge is 18 millimeters.

This instance adopts fixedly an in succession end of square tube 27 of the tool back plane 31 of sphere finger gland 3; Fixedly in succession vertical rectangle back side 26 of pointed cone 21 of the other end of square tube 27; Is matched in clearance between the rectangle back side 26 and the vertical recessed rectangular slot 16 vertically, between square tube 27 and the square hole 17 for being slidingly matched.

The sphere finger gland 3 that the finger that holds a pen when writing is pressed both sides square tube 27 power transmissions of ining succession are fixed cylinder pencil 5 to pointed cone 21, write solid firmly, tool back plane 31 convergence outerplanars 13; Unclamp finger; Being wedged in spring 4 in the spring eye 14 pushes the tool back plane 31 of sphere finger gland 3 square tube 27 of ining succession to and hauls pointed cone 21 and break away from cylinder pencils 5 at spring fixing feet 34 places; Make cylinder pencil 5 on axial line, to move; Limit sphere finger gland 3 when pasting vertical recessed rectangular slot 16 at the vertical rectangle back side 26 and moved, avoided spring 4 outer races.No matter cylinder pencil 5 is that length is short; Always can moving through circular hole 15 in the axle center; Find the most suitable Writer's pencil outside cylinder 51 the amounts of exposing, make pencil sharper cone 55 be in optimal position, can the weak point of pencil stub can be used 3 centimeter length in the lower end; Not only saved material, and the comfortable feel that holds a pen.

Claims

1. cylinder Pencil cap, cylinder pencil (5) penetrates the axle center circular hole (15) of cylinder Pencil cap (1), it is characterized in that: sphere finger gland (3) in succession square tube (27) and pointed cone (21), pointed cone (21) withstands cylinder pencil (5); Spring (4) is pushed the tool back plane (31) of sphere finger gland (3) to, and tool back plane (31) square tube (27) of ining succession hauls pointed cone (21) and breaks away from cylinder pencil (5).

2. a kind of cylinder Pencil cap according to claim 1; It is characterized in that: on axle center circular hole (15) wall of described cylinder Pencil cap (1) two square holes (17) are arranged; The inner of square hole (17) is vertical recessed rectangular slot (16); The outer end of square hole (17) is outerplanar (13), and both sides respectively are provided with two spring eyes (14) of symmetry, and the outline of cylinder Pencil cap (1) is made up of concave arc (18) and convex arc (19).

3. a kind of cylinder Pencil cap according to claim 1; It is characterized in that: fixedly an in succession end of square tube (27) of the tool back plane (31) of described sphere finger gland (3); Fixedly in succession vertical rectangle back side (26) of pointed cone (21) of the other end of square tube (27); Is matched in clearance between the rectangle back side (26) and the vertical recessed rectangular slot (16) vertically, between square tube (27) and the square hole (17) for being slidingly matched.