CN2663159Y

CN2663159Y - Propelling pencil

Info

Publication number: CN2663159Y
Application number: CN 03202906
Authority: CN
Inventors: 许国培
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-03
Filing date: 2003-02-11
Publication date: 2004-12-15
Anticipated expiration: 2013-02-11

Abstract

The utility model relates to a special propelling pencil which is suitable for a standard examination machine to read an answer card. The utility model comprises a penholder and a lead, wherein the penholder is composed of an external rod, a spiral push rod and a turn knob, the external rod is divided into two symmetrical pieces, a rectangular groove along a major axis direction is arranged in the pieces, the front end of the groove is provided with an extending hole groove of the lead, the center section of the pieces is provided with a transversal rectangular hole, the two pieces are welded into integration by hasps, glue or ultrasonic, the spiral push rod which is a long rod with external threads is processed into a rectangle adapting the rectangular groove, the front end of the rod is provided with a blind hole in which the lead is inserted, the columnar turn knob and the spiral push rod are in screw pair fit, and partial turn knob is protruded in the transversal rectangular hole. The projected length of the lead of the pencil can be regulated only by a hand holding the pencil without transforming gestures, and the propelling pencil can fully utilize the lead.

Description

A kind of propelling pencil

Affiliated technical field

The utility model relates to a kind of propelling pencil, especially relates to a kind of special-purpose propelling pencil that is applicable to standard examination machine-readable answer sheet.

Background technology

At present, adopt the answering card answer, it is more and more universal that computer is declared the standardization examination of volume, computer is declared rollback request answer Pencil with 2B hardness blacking on the square frame of answering card, Chang Yong Pencil with 2B hardness all was fixing pencil in the past, when pen core write bald after the needization time pen core front end fined away again or be whittled into flat, yet the time of examination is very valuable, for this reason, the Chinese patent communique discloses a kind of utility model patent " standard examination pencil special " (patent No. ZL99207277.8), be made up of handwriting and pen core that the penholder and the cap for brush constitute, it is characterized in that: the cross section of pen core is a long and flat; Be provided with a pen core inserting hole that is similar to the pen core cross section in the penholder, the pen core inserting hole outlet of pen arm end is slightly less than the pen core cross section, the penholder and the cap for brush are thread connection, the thread segment slightly larger in diameter of penholder is in penholder body of rod diameter, the internal thread of the cap for brush extends to cap for brush bottom, is provided with one in the cap for brush and can inserts the T-shaped push rod that penholder pen core inserting hole also can promote pen core.Twist and revolve the push rod that the cap for brush can be actuated setting in it; Make pen core expose penholder.But this pen has its weak point, the one, need another hand to help or the hand that holds a pen will alter one's posture could twist and revolves cap for brush release pen core, inconvenience to some extent, the 2nd, the length of releasing pen core mostly is the length of the cap for brush most, want to make full use of pen core and can only back out the cap for brush and change longer push rods in addition, otherwise can only be that the change-fountain pen core just can continue to use this pen.

Summary of the invention

The purpose of this utility model, the extension elongation that just provides hand that a kind of need hold a pen and needn't the conversion gesture can regulate pen core also can make full use of the propelling pencil of pen core.

For achieving the above object, propelling pencil of the present utility model, comprise penholder and pen core, it is characterized in that: described penholder is by outer bar, spiral handspike and turn-knob constitute, the outer bar of rectangle is divided into two of symmetry, have rectangular channel in the sheet along long axis direction, the front end of groove be pen core stretch out hole slot (two close reservoir hole, rectangular enclosure), the stage casing of sheet has horizontal rectangular opening, two with hasp, gluing or ultra-sonic welded is integral, spiral handspike is the external screw thread stock, and push rod is processed to the rectangle that adapts with aforesaid rectangular channel, and the front end of bar has the blind hole of slotting pen core, have the internal thread hole that adapts with the screw putter external screw thread in the column turn-knob vertically, the length of turn-knob and aforementioned lateral rectangular opening width adapt, and spiral handspike is that screw pair cooperates with turn-knob, and turn-knob is laterally having part to protrude in the rectangular opening.

On the basis of the above, the utility model also can be done further improvement:

1, described outer rod outer surface, inwardly recessed near the front and rear side of horizontal rectangular opening, to protrude turn-knob, convenient finger turns;

2, the outer bar front end of described rectangle is the tip, upward is chamfered transition, is interior concaved circular cambered surface transition down, not obstruct the view as far as possible;

3, the rectangle pen core of described rectangular channel front end and outer bar front end stretches out the hole the tapering transition, and the front end of described spiral handspike is the awl end;

4, the front end of a described spiral handspike affixed pen clip head in addition, its front end is the awl end.

Propelling pencil operation principle of the present utility model is as follows: can not move forward and backward because turn-knob is stuck in the horizontal rectangular opening in penholder stage casing, can only rotate, and spiral handspike is stuck in and moves forward and backward only in the long rectangular channel in the penholder and can not rotate, when turning turn-knob, turn-knob drives spiral handspike and moves forward and backward, and the pen core that is inserted in the spiral handspike front end is stretched out or indentation.

The beneficial effects of the utility model are: propelling pencil of the present utility model in use when pen core write bald after, needn't change the gesture that holds a pen, only need to push away and twist the outer turn-knob that is exposed at the penholder stage casing pen core is stretched out or indentation with the thumb of the hand that holds a pen or forefinger, greatly facilitate the user, and can utilize pen core fully.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is that the master of propelling pencil of the present utility model looks schematic diagram.

Fig. 2 is the cross-sectional schematic for Fig. 1.

Fig. 3 is the A-A line cross-sectional schematic along Fig. 2.

Fig. 4 is the B-B line cross-sectional schematic along Fig. 2.

Fig. 5 is the C-C line cross-sectional schematic along Fig. 2.

Fig. 6 is the D-D line cross-sectional schematic along Fig. 2.

Fig. 7 is the E-E line cross-sectional schematic along Fig. 2.

Fig. 8 is the F-F line cross-sectional schematic along Fig. 2.

The specific embodiment

From Fig. 1 to Fig. 8, can see, propelling pencil of the present utility model, comprise penholder 1 and pen core 2, penholder 1 front end has the hole allows pen core 2 stretch out, penholder 1 is by outer bar 3, spiral handspike 4 and turn-knob 5 constitute, the outer bar 3 of rectangle is divided into two of symmetry, have rectangular channel 6 in the sheet along long axis direction, the front end of groove is that pen core stretches out hole slot, rectangular channel front end and pen core stretch out hole slot have the tapering transition (two close pen core stretch out the hole, rectangular enclosure), the stage casing of sheet has horizontal rectangular opening 7, two front ends connect with hasp 8, the rear end is integral (can certainly glued joint or ultrasonic bonding is integral) with rubber case 10 clampings, spiral handspike 4 is the external screw thread stock, be processed to the rectangle that adapts with rectangular channel 6, the front end of bar is the awl end, and the blind hole 9 of slotting pen core arranged, have the internal thread hole that adapts with screw putter 4 external screw threads in the stepped cylindrical turn-knob 5 vertically, the length of turn-knob 5 and aforementioned lateral rectangular opening 7 width adapt, spiral handspike 4 cooperates for screw pair with turn-knob 5, turn-knob 5 is laterally having part to protrude in the rectangular opening 7, the outer surface of outer bar, front and rear side near horizontal rectangular opening 7 is inwardly recessed, to protrude turn-knob, convenient finger turns, outer bar 3 front ends are most advanced and sophisticated, go up and be chamfered transition, it is down interior concaved circular cambered surface transition, not obstruct the view as far as possible, 11 is rubber.

Claims

1, a kind of propelling pencil comprises penholder (1) and pen core (2), it is characterized in that; Penholder (1) is by outer bar (3), spiral handspike (4) and turn-knob (5) constitute, the outer bar (3) of rectangle is divided into two of symmetry, have rectangular channel (6) in the sheet along long axis direction, the front end of groove has pen core (2) to stretch out hole slot, the stage casing of sheet has horizontal rectangular opening (7), two fuse with hasp (8), cross section is rectangular, spiral handspike (4) is the external screw thread stock, be processed to the rectangle that adapts with rectangular channel (6), front end has the blind hole (9) of slotting pen core, have the internal thread hole that adapts with screw putter (4) external screw thread in the column turn-knob (5) vertically, both cooperate for screw pair, and the length of turn-knob (5) and aforementioned lateral rectangular opening (7) width adapt, and turn-knob (5) is laterally having part to protrude in the rectangular opening (7).

2, propelling pencil according to claim 1 is characterized in that: the rectangle pen core of described rectangular channel (6) front end and outer bar (3) front end stretches out hole slot the tapering transition, and the front end of bar is the awl end.

3, propelling pencil according to claim 1 is characterized in that: the outer surface of described outer bar, inwardly recessed near the front and rear side of horizontal rectangular opening (7).

4, propelling pencil according to claim 1 is characterized in that: described outer bar (3) front end is for most advanced and sophisticated, upward be chamfered transition, is interior concaved circular cambered surface transition down.