WO2013049972A1

WO2013049972A1 - Core-breaking-proof and core-jamming-proof mechanical pencil

Info

Publication number: WO2013049972A1
Application number: PCT/CN2012/000475
Authority: WO
Inventors: 王雾龙
Original assignee: Wang Wulong
Priority date: 2011-04-14
Filing date: 2012-04-10
Publication date: 2013-04-11
Also published as: CN202764517U

Abstract

Disclosed is a core-breaking-proof and core-jamming-proof mechanical pencil, comprising a core-guiding barrel (6), a core-storing barrel (17), and a lead core (1). The core-guiding barrel is provided on the outer contour body (24) thereof with a left half-open trapezoidal groove (27) and a right half-open trapezoidal groove (28), the core-storing barrel is provided on two sides of the outer contour body thereof with a left half-open trapezoidal groove and a right half-open trapezoidal groove, where the widths of inner groove openings of the trapezoidal grooves are less than the diameter of the lead core (1). Also provided are a core-propelling mechanism, a core-locking mechanism, and an eraser (11) that matches a pencil cap (12). The eraser has embedded at the center portion thereof a liner barrel (10). The liner barrel is provided with a center hole (34). The pencil automatically propels the core. The length of the core propelled is controlled between 0.2 and 0.5 millimeters. The core is provided with protection throughout the entire process of sliding downwards. This ensures the core-breaking-proof and core-jamming-proof features when writing.

Description

'The kind of continuous core does not card core pencil technology field

The utility model relates to a mechanical pencil, in particular to a continuous core non-card core automatic pencil. Background technique

For all existing automatic pencils, you need to press the top of the pencil, or rotate the pen, or touch the side wall to use the lead. Moreover, the length of the core is uncontrollable, and the core is easy to be too long, and the book is easy to break. Some can also use the core to compensate the wear core, but the base is driven by the weight of the lead core, and the core is slow. It can't compensate the wear speed of the lead core during normal writing. The book is not smooth and the stroke is scratched. Moreover, the internal locking or sandwich mechanism is easy to lift the core, the core and the broken core, which is inconvenient to use and wastes the lead core. Utility model content

The technical problem to be solved by the new j is to provide a continuous core and non-card core moving pencil, which overcomes the uncontrollable length of the prior art I pencil, or the automatic core is slow, the writing is not smooth, and the internal is easy. 15-core, the disadvantage of broken core, the utility model provides a structure with automatic H; core compensation wear, and precise controllable core length, and can be used at the same time 65 mm, 75 mm, or other not shorter than: 1⁄2m short lead core, automatic pencil with continuous core and internal core function.

The technical problem to be solved by the utility model is achieved by the following technical solutions: a continuous core non-card core mechanical pencil, comprising a core guiding tube, a core tube, a lead core, the lead core passing through the core guiding tube In the middle hole, the outer contour body of the core guiding tube has a semi-dip type left trapezoidal groove on both sides, and a right half open trapezoidal groove, and a semi-open left trapezoidal groove is opened on both sides of the outer contour of the core tube The right-handed trapezoidal slot; the inner slot width of the semi-draw trapezoidal slot is smaller than the diameter of the lead core.

The outer cylinder of the upper end of the core guiding tube has a positioning boss, and the guiding core tube is closely matched with the pen holder through the positioning boss; the upper end counterbore of the pen holder is matched with the lower end of the core tube; A rib is disposed on the left and right sides of the rear end, and the rib is matched with the left semi-open trapezoidal groove and the right half-disposed trapezoidal groove on both sides of the core guide tube.

The core core does not include a core lock mechanism, and the lock core mechanism includes a lock core lower spring, and the lock core spring is disposed on the outer contour body of the core guide tube; The lock core lower spring supports the left lock chip and the right lock chip; the left lock chip and the right lock chip are respectively disposed in the left half open trapezoidal groove and the right half pull type trapezoidal groove on both sides of the lead core tube; The outer bevel of the chip and the lock The inner wedge faces of the pellets are in contact to create a lock cylinder force, thereby forming a lock cylinder mechanism.

The pen tip touches the lock cylinder block to actuate the spring on the lock cylinder by the writing force, so that the wedge profile inside the lock core block is separated from the outer slope of the lock chip, and the lead core is instantaneously released.

The continuous core non-card core mechanical pencil further includes a core feeding mechanism, the core feeding mechanism includes a core sending block, and a core short magazine placed on the inner bottom end of the core sending block; The short spring is located at the outer contour of the core tube - [:.; the short core of the core feeds the left feed core), and the right feed chip; the left feed chip and the right feed chip are respectively provided with .j ^_ The left side of the tube, the open trapezoidal slot, and the right half of the trapezoidal slot; the outer bevel of the left feed chip and the right feed chip are in contact with the wedge surface inside the core block to generate a lock cylinder force ;

The lock cylinder force acts on the lead core, and the left feed chip and the feed chip act on the lead core to generate a lateral clamping force;

The core feeding mechanism further includes a core sending spring, the core sending spring acts on the top end of the core sending block, so that the left sending chip and the right sending chip lock the lead core, and along the storage The central hole of the core tube conveys the lead core to the core guiding tube; and constitutes a core feeding mechanism.

The continuous core-free core A pencil further includes an eraser matched with the cap; the center portion of the eraser is embedded with a liner tube, and the inner liner is provided with a core hole.

The continuous core-non-core core pencil is further matched with an upper end plug of the upper end of the core tube, and the lower end of the upper end plug is connected with a top end of the trapezoidal groove on both sides of the core tube; The upper end side of the plug is provided with an upper end plug rib, and the rib is matched with the inner cylindrical hole of the pen holder.

Two or three ribs are arranged on the left and right sides of the rear end of the pen tip.

a long rectangular groove is formed in the pen holder, a lifting button and an inner button are disposed in the long rectangular groove, and the inner button is disposed in a central elliptical hole of the lifting button; The hook is connected with the lifting cross-f;;, the inner button 3⁄4^ resets the small bullet. . : ^ I rises inside the button to make a sinking action;

The other end of the bottom surface of the inner button is provided with a sloped surface to be in contact with the top arc of the left sending chip and the right sending chip; generating a radial component force to the -F and compressing the chip to feed the core short spring; the result is a gap is formed between the outer bevel of the left feed chip and the outer bevel of the right feed chip and the wedge surface on the inner cylindrical protrusion of the core piece, and the lead core is loosened; the ii inch lead core can be embedded in the center of the eraser The inner liner enters the core tube.

When the lifting button and the inner button 松开 are released: a reset small spring fitted inside the inner button causes the inner button to perform a rising and resetting action on the outside of the lifting button, and the inclined surface on both sides of the bottom surface of the inner button is The left sending chip and the right sending chip are separated from each other by a curved surface, and the left sending chip and the right sending chip relock the lead core; and the spring generated by the long spring sends a force to the core piece and Drive the clamped lead The left sending chip and the right sending chip slide down along the semi-opening ladder groove on both sides of the core tube and drive the core mechanism to move downward, so that the lead core overcomes the frictional resistance and passes through the lock core mechanism relatively uniformly. Arrive at the front end of the pen.

In the present invention, the left lock chip and the right lock chip are preferably of the type 1; or, the left feed chip and the right feed chip preferably have the core hole preferably a circular shaped hole; the counterbore is preferably a shaped hole. The top of the form-locking chip may have elongated columnar protrusions: the top of the "E" shaped chip may have elongated columnar protrusions.

The utility model has the following beneficial effects:

1. There are two convex ribs on the left and right sides of the rear end of the pen head, and the gaps are matched with the biological trapezoidal grooves on both sides of the core tube, and can slide down along the trapezoidal grooves on both sides of the core tube, and the S stroke of the upward sliding is affected by The lateral limit ribs on the trapezoidal grooves on both sides of the core guide tube are restricted, thereby controlling the core length of the lead core.

2, fundamentally solved the problem of the card core, the core, the broken core and the slow core. 2-0. The length of the core of the tip end is controlled at 0. 2-0. The length of the core of the tip end is controlled at 0. 2-0. Between 5 mm; the inner liner of the center of the lead eraser' 1 ¹ core hole into the core tube and the tip 4' have a cavity wall in contact with the outer cylindrical surface of the lead core for full-directional guidance protection , the core is even when writing, and the core is constantly.

3, do not press the top of the pen, in the writing, the continuous lead core, not core, the length of the lead core is precisely controlled by the pen head protection and support effective [^ degree fan, to achieve uniform core, not card Core, a continuous pencil with a continuous core. DRAWINGS

Figure 1 is a schematic view of the overall structure of the implementation of the present invention;

Figure 2, Figure 3, Figure 4 are the axonometric drawings of the overall structure;

Figure 5 is a left-hand core, right-hand chip isometric view;

Figure 6 is a left-handed chip, right-locked chip isometric view;

Figure 7 is an enlarged view of the upper end plug shaft;

Figure 8 is the axial magnification of the core tube |

Figure 9 is an enlarged view of the inner liner tube;

Figure 10 is an enlarged view of the axial guide of the core guide;

Figure 1 1 is a cross-sectional enlarged view of the core guide tube

Figure 12 is an enlarged cross-sectional view of the core tube;

Figure 1 3 is an enlarged view of the shaft of the core.

Figure 14 is a diagram of the lock cylinder block axis measurement and release; Figure 15 is an enlarged view of the shaft of the lifting button;

Figure 16 is an enlarged view of the inner button shaft

Figure 1.7 is a magnified view of the pen axis

Among them, 1 lead core; 2- pen head cover; 3 lock core lower spring; 4 left lock chip; 5-lock core block; 6 core guide tube; 7 pen holder; 8 core short spring; 9 left feed chip; Liner; 11-eraser; 12-pen cap; i3 bu. end plug; 14 core length spring; 15-pin core block; 16 right feed chip; 17-core tube; 18 lock core spring; 19 right lock Chip; 20 pen head; 21 inner button; 22-lift button 23 reset small spring 24 · outer contour body 25 limit transverse rib 26 core tube center hole 27 - left open trapezoidal groove 28 right half open trapezoidal groove 29 - positioning boss 30 counterbore 31 rib 32-lock cylinder wedge surface 33-core tube center hole 34 inner tube center hole 35-send core wedge surface 36-claw hook 内 - inner notch 38-upper end rib 39-Send chip outer bevel 40-inner button bevel 41-inner button hook 42 - internal transverse bar specific embodiment

The embodiments of the utility model will be described below with reference to the accompanying drawings:

A small core that does not have a core, such as a pencil, including a core tube 6, a core tube 17, a lead core 1, through which the lead core passes through the core hole 26 of the core tube The outer contour body 24 of the core tube is provided with a left half open trapezoidal groove 27 and a right half open trapezoidal groove 28 on both sides, and the left outer half of the outer contour of the core tube 17 is provided with a left half open trapezoidal groove 27, The right semi-open trapezoidal groove 28; the inner notch 37 of the semi-open trapezoidal groove has a width smaller than the diameter of the lead core 1.

The outer cylinder of the upper end of the core guiding tube has a positioning boss 29, and the guiding core tube is closely adjacent to the pen holder 7 by the positioning boss and the lower end of the pen holder 30 and the lower end of the core tube 17. The pen head 21 is placed in the pen cover 2, the pen head cover is screwed to the pen holder 7; the rear end of the pen head 21 is provided with two convex ribs 31, and the convex rib and the core tube 6 are The left half of the trapezoidal trapezoidal groove 27 and the 'half of the trapezoidal trapezoidal groove 28 are gap-fitted; the pen tip slides up and down along the two sides of the core tube by the writing force .

The continuous core-non-core core-moving pencil further includes a core lock mechanism, the lock core mechanism includes a lock core down 3, the lock core lower spring and the lock core block 5 position T the guide core The outer contour of the tube rests 24; the lock core lowers the yellow support left lock chip 4 and the right lock chip 19; the left lock chip and the right lock chip are respectively disposed on the left half open trapezoid on both sides of the core guide tube The inner locking surface of the left locking chip and the right locking chip is in contact with the inner wedge surface 32 of the locking core block to generate a lock cylinder force;

The lock cylinder force acts on the lead core, and the left lock chip and the right lock chip act on The lead core produces a lateral clamping force; thereby forming a lock cylinder mechanism.

The lock cylinder block is provided with a lock core upper spring 18; a lock core block.

The pen tip touches the lock core block by a writing force, and compresses the lock core upper spring 18 so that the wedge profile inside the lock core block is separated from the outer lock surface of the left lock chip and the shackle chip. The lead core is momentarily loose.

The continuous core non-card core mechanical pencil further includes a core feeding mechanism, and the core feeding mechanism comprises a core sending block 15 and a core short spring 8 placed on the inner bottom end of the core sending block; The core short spring is located on the outer contour body of the core tube 17; the core short spring 5 supports the left feed chip 9 and the right feed chip 16; the left feed chip and the right feed chip are respectively disposed on the core tube The left half of the two sides of the trapezoidal slot 27 and the right half of the trapezoidal slot 28; the left feed chip 9, the outer bevel chip 39 of the right feed chip 16 and the wedge face 35 of the core block Contact produces a lock cylinder force:

The lock cylinder force acts on the lead core, and the left feed chip 9 and the right feed chip 16 are used for the lead core 1 to generate a lateral clamping force;

The core feeding mechanism further includes a core length spring 14 that acts on the top end of the core piece to lock the left feed chip 9 and the right feed chip 16 to the lead core 1 And conveying the lead core to the core guiding tube along the central hole 33 of the core tube to form a core feeding mechanism.

The continuous core non-card core A moving pencil further includes an eraser 1 1 matched with the pen holder 12; the inner core of the eraser is embedded with a liner tube 10, and the inner liner tube is provided with a core hole 34 The lead core slides into the core tube through a central hole 34 of the inner liner; the top end of the center portion of the eraser forms a split center hole.

The continuous core-non-core core pencil is further matched with an upper end plug 13 at an upper end of the core tube 17, and a lower portion of the upper end plug is connected with a "L"-shaped claw at a top end of a trapezoidal groove on both sides of the core tube. The upper end of the upper end plug is provided with an upper end plug rib 38, and the rib is matched with the inner cylindrical hole of the pen holder.

Two ribs 32 are provided on the left and right sides of the rear end of the pen head 22.

a long rectangular groove is formed on the pen holder, and the lifting button 22 and the inner button 21 are disposed in the long rectangular groove, and the inner button 21 is disposed in the central elliptical hole of the lifting button 22; A hook 40 on one side of one end of the bottom surface of the button is connected to the inner transverse bar 42 of the lift button; a reset small spring 23 is disposed inside the inner button. Lifting the button inside the sinking action '">^;

The bottom surface of the bottom surface of the inner button is provided with a slope 40 to contact the top surface of the left feed chip 9 and the right feed chip 16; the downward radial force is generated and the chip is fed to the core short spring 8; Result A gap is formed between the left feed chip, the outer bevel 39 of the right feed chip, and the wedge surface on the inner cylindrical protrusion of the core piece 15; and the lead core 1 is loosened; The inner liner of the center of the eraser enters the core tube.

When the loose button and the inner button 21 吋 are assembled, the reset small spring 23 inside the inner button 2 1 is configured to cause the inner button 2 1 to perform a zoom-up reset action to the outside of the lift button. The left side of one end of the button 2 1 is separated from the top left chip and the right side chip, and the left sending chip and the right sending chip relock the lead core; the core sending spring generates The left-hand chip and the right-feeding chip which act on the core piece and drive the clamped lead core to the 1, "elastic force" slide along the side of the core tube and slide and drive the same. The core mechanism moves downward, so that the lead core overcomes the frictional resistance and reaches the front end of the tip through the lock cylinder mechanism at a relatively constant speed.

In the present invention, the left lock chip and the right lock chip are preferably E-shaped, planar, or curved; or, the left feed chip and the right feed chip are preferably E-shaped, planar, and curved: The core tube center hole 26 is preferably a two-half sector shaped hole; the counterbore 31 is preferably a profiled hole; the top of the "E" shaped lock chip can be elongated and elongate; the "E" shaped chip top It can be elongate with elongated columnar protrusions.

The utility model has the automatic core output, the inner core is not the core, and the core length is completely controlled between 0. 2-0. 5 mm, the lead core is guided by the whole process from the top and the downward direction, and the core is constantly written during writing. Core and other benefits.

Claims

1. A continuous core non-card core mechanical pencil, comprising a core guiding tube (6), a core tube (17), a lead core (1), and the lead core (1) passing through the center hole of the guiding core tube (26) The characteristic is: the outer contour body (24) of the core guiding tube has a left semi-open trapezoidal groove (27) and a right semi-open trapezoidal groove (28) on both sides, and the core tube (Π) The outer contour of the outer contour has a left semi-open trapezoidal groove (27) and a right semi-open trapezoidal groove (29); the inner notch (37) of the semi-open trapezoidal groove has a width smaller than the lead core (1) diameter of.

2. The continuous coreless cored pencil according to claim 1, characterized in that: the outer cylinder of the upper end of the core guiding tube (6) has a positioning boss (29), and the guiding core tube (6) passes through the The positioning boss is closely matched with the pen holder (7); the upper end counterbore (30) of the pen holder is matched with the lower end of the core tube, and the rear end of the pen head (20) is provided with a convex rib (31) The rib (31) is matched with the left semi-open trapezoidal groove and the right semi-open trapezoidal groove described on both sides of the core guide tube.

3. The continuous coreless cored pencil according to claim 1 or 2, further comprising: a lock cylinder mechanism, wherein said lock cylinder mechanism comprises a lock core lower spring (3), said lock core lower spring ( 3) and a lock core block (5) is located on the outer contour body (24) of the core guide tube (6); the lock core lower spring (3) supports the left lock chip (4) and the right lock chip (19) The left locking chip and the right locking chip are respectively disposed in the left semi-open trapezoidal slot and the right semi-open trapezoidal slot on both sides of the guiding core tube; the outer inclined surface of the left locking chip and the right locking chip are The inner wedge surface (32) of the lock cylinder is in contact with each other to generate a lock cylinder force; the horizontal limit rib (25) is disposed on the semi-open trapezoidal groove on both sides of the core guide tube.

The lock cylinder block is provided with a lock core upper spring (18).

4. The continuous coreless cored pencil according to claim 1, 2 or 3, characterized in that: further comprising a core feeding mechanism, said core feeding mechanism comprising a core sending block (15) placed on said core a short core spring (8) on the inner bottom end of the block (15); the short core spring (8) is located on the outer contour body (24) of the core tube (17); the short core spring (8) Supporting the left sending chip (9) and the right sending chip (16); the left sending chip (9) and the right sending chip (16) are respectively disposed on the left half open trapezoid on both sides of the core tube (17) a groove (28), a right semi-open trapezoidal groove (29); an outer inclined surface (39) of the left feed chip (9), the right feed chip (16), and a wedge shape inside the core feed block (15) The surface (35) contacts to generate a core force to form a core feeding mechanism;

The core feeding mechanism further includes a core sending spring (14), the core sending spring (14) acting on the top end of the core sending block (15), so that the left sending chip (9) and the right sending chip (16) locking the lead core (1) and transporting it along the central hole (33) of the core tube (17) to the core guiding tube (6) Lead core (1).

The continuous coreless cored pencil according to claim 1 or 4, further comprising: an eraser (11) matched with the cap (12); the center of the eraser (11) is lined with a lining tube

(10), the inner liner (10) is provided with a central hole (34); the lead core (1) is slid into the core tube through a central hole (34) of the inner liner (10); The eraser (11) and the inner liner (10) together form an open center hole (34).

The continuous coreless cored pencil according to claim 1 or 2, characterized in that: the upper end of the core tube (17) is further provided with an upper end plug (13), and the upper end plug (13) is lower and The top end of the trapezoidal groove on both sides of the core tube (18) is connected with an "L"-shaped claw hook (36); the upper end side of the upper end plug (13) is provided with an upper end plug rib (38), and the upper end plug is convex The ribs cooperate with the inner cylindrical bore of the pen holder.

7. The continuous coreless cored pencil according to claim 2, characterized in that: the rear end of the writing head is provided with two ribs (31) on the left and right sides.

8. The continuous coreless cored pencil according to claim 1 or 2, wherein: the long rectangular groove is formed in the pen holder, and the lifting button (22) and the inner button (21) are disposed in the long rectangular groove. The inner button is disposed in the center hole of the lifting button; the inner button (21) is provided with an inner button hook (41) on one end of the bottom surface and an inner transverse rib (42) of the lifting button (22); The inner button (21) is internally provided with a reset small spring (23).

The other end of the bottom surface of the inner button (21) is provided with a slope (40) in contact with the top arc surface of the left feed chip and the right feed chip.

9. The continuous coreless cored pencil according to claim 1, 2 or 5, wherein: the left lock chip and the right lock chip are E-shaped, planar, and curved; or, the left feed chip The right-hand chip is an E-type, a flat type, a curved surface type; the top of the "E"-shaped lock chip has an elongated columnar protrusion; and the top of the "E" shaped chip has an elongated columnar protrusion.

10. The continuous coreless cored pencil according to claim 1, wherein: the center hole (26) of the core guide tube has a two-half sector shaped hole; and the counterbore (30) is a shaped hole.