CN2242182Y

CN2242182Y - Propelling pencil and writing-core therefor

Info

Publication number: CN2242182Y
Application number: CN 95218274
Authority: CN
Inventors: 周志昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-03
Filing date: 1995-08-03
Publication date: 1996-12-11
Anticipated expiration: 2005-08-03

Abstract

The utility model relates to a propelling pencil with writing-core fed by screw and a matching lead. Spiral steel wire is arranged in a penholder of the propelling pencil, a lead tube of which the tube wall is provided with an open slot is arranged in the spiral steel wire, a lead top is arranged in the lead, a key extends out of the front end of the lead top, and the back end of the matching lead is provided with a key groove. The movable lead is suitable for loading thick leads of which the diameters are more than 1.5 mm, having the advantages of stable lead, convenient use and simple structure.

Description

A kind of spiral goes out plumbous propelling pencil and a kind of matching used lead for retractable pencil

The utility model provides a kind of spiral that is suitable for adorning with the lead bullion core to go out plumbous propelling pencil and a kind of matching used lead for retractable pencil.

Dress faces the problem that how to solve lead for retractable pencil stability with the propelling pencil of the above lead bullion core of ∮ 1.5mm.The stable of lead for retractable pencil is meant that mainly lead for retractable pencil does not bounce back in (comprise and writing and the skiving lead for retractable pencil) process of use, do not rock and do not rotate.The patent No. is that the utility model of ZL93223379.1 has proposed a better scheme: fix a spring in penholder, be with the lead for retractable pencil pipe in the spring, lead for retractable pencil pipe tube head is the lead for retractable pencil chuck that cracks and be the garden bench-type, the lead for retractable pencil but this chuck matches with the closing in of penholder head under the spring tension effect in the pinch tube.Have one on the lead for retractable pencil tube wall and vertically crack, lead for retractable pencil top is arranged in the lead for retractable pencil pipe, lead for retractable pencil has pin on the top, and an end of pin passes cracking on the lead for retractable pencil tube wall and inserts between the helical of spring.Push and rotate the lead for retractable pencil pipe, the lead for retractable pencil chuck of lead for retractable pencil tube head just unclamps lead for retractable pencil, and the lead for retractable pencil top then moves down under the spring helical promotes and ejects lead for retractable pencil.This utility model has solved lead for retractable pencil retraction and the problem of rocking in the use effectively.For lead for retractable pencil is not rotated, this utility model has proposed the lead for retractable pencil clip designs that is connected as a single entity with the lead for retractable pencil pipe.The folder lead for retractable pencil power of this chuck is subjected to the restriction of spring tension, can only satisfy when writing the lead for retractable pencil stability requirement.When using miniature pencil sharpener grinding lead for retractable pencil, the plumbous mental and physical efforts of the folder of this chuck just seem not enough.And, use after a period of time, also can cause pressing from both sides the reduction of lead for retractable pencil power owing to reasons such as wearing and tearing.

The purpose of this utility model provides a kind of improved propelling pencil and a kind of joining

The lead for retractable pencil that cover uses, its structure is more simple, can in use avoid the lead for retractable pencil retraction and when rocking, prevent the rotation of lead for retractable pencil effectively.

The purpose of this utility model is to realize like this, spiral wire is arranged in penholder, the lead for retractable pencil pipe is arranged in the spiral wire, having one on the lead for retractable pencil tube wall vertically cracks, the lead for retractable pencil top is arranged in the lead for retractable pencil pipe, the lead for retractable pencil side wall has projection, projection to stretch out between the helical that is inserted in spiral wire from the cracking of lead for retractable pencil tube wall, and lead for retractable pencil top front end has the key that stretches out.

The key that lead for retractable pencil top front end stretches out can be that the vertical section is wedge, can be that the vertical section is rectangular, also can be that the vertical section is that front end is with hook.

Spiral wire the pitch of last end greater than the pitch of back.

The lead for retractable pencil rear end of supporting dress usefulness has the vertical section of matching with the key of above-mentioned lead for retractable pencil top front end to be wedge or rectangular or band colludes the groove of shape respectively.

Lead for retractable pencil and lead for retractable pencil top is inserted in the lead for retractable pencil pipe in the penholder with keyway and the mutual interlock of key ground, and lead for retractable pencil just can not rotate in the lead for retractable pencil pipe like this.Spiral wire is rotated relative to the lead for retractable pencil pipe, just in the lead for retractable pencil pipe, vertically move, move forward and to eject lead for retractable pencil, move backward and can hold the lead for retractable pencil income on lead for retractable pencil top under the promotion of spiral wire helical.The propelling pencil of the lead for retractable pencil that the lead for retractable pencil top of vertical section front end key with hook is housed and matches can also reverse rotation be regained lead for retractable pencil.

Be not with the lead for retractable pencil chuck on the lead for retractable pencil pipe of the present utility model, structure is more simple, and the utility model has gone out front end the lead for retractable pencil top of key and the lead for retractable pencil design that tail end has corresponding keyway, has solved the problem that lead for retractable pencil rotates more simply, effectively.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 be according to the utility model proposes lead for retractable pencil top is housed before stretch out propelling pencil forward part (including the lead for retractable pencil top of key and the lead for retractable pencil that tail end the has corresponding keyway) cutaway view that vertical section front end band colludes the key of shape.

Fig. 2 is Fig. 1 pen head part profile;

Fig. 3 is Fig. 1 pen head part profile;

Fig. 4 is Fig. 1 penholder fragmentary cross-sectional view;

Fig. 5 is a propelling pencil rear section cutaway view shown in Figure 1.

Fig. 6 be front end have the vertical section be wedge key lead for retractable pencil top and the cutaway view of the lead for retractable pencil of corresponding keyway is arranged.

Fig. 7 is Fig. 6 lead for retractable pencil top and the lead for retractable pencil profile at interlock position mutually.

Fig. 8 is that front end has the lead for retractable pencil of the rectangular key in vertical section to push up and have the cutaway view of the lead for retractable pencil of corresponding keyway.

Fig. 9 is Fig. 8 lead for retractable pencil top and the lead for retractable pencil profile at interlock position mutually.

Figure 10 is according to the utility model proposes, and stretches out another embodiment forward part of movable pencil (include the lead for retractable pencil top of key and the lead for retractable pencil of corresponding keyway is arranged) cutaway view that the vertical section band colludes the key of shape before the lead for retractable pencil top.

Figure 11 is Figure 10 penholder part (comprise nib and penholder, the key on lead for retractable pencil top and the lead for retractable pencil of corresponding keyway an is arranged) profile.

Figure 12 is Figure 10 penholder part (comprising lead for retractable pencil top projection, lead for retractable pencil pipe) profile.

Figure 13 is the another embodiment penholder front cross-sectional view of stretching out the propelling pencil of vertical section key with hook according to before the lead for retractable pencil top that the utility model proposes.

Figure 14 is Figure 13 penholder part (comprising steel wire and the corresponding groove of penholder that penholder, lead for retractable pencil pipe, lead for retractable pencil top, spiral wire front end fold) profile.

Figure 15 is this embodiment penholder rear section cutaway view.

Figure 16 is Figure 15 penholder rear section figure.

Below in conjunction with detail and the operating position of accompanying drawing detailed description according to the embodiment of the propelling pencil that the utility model proposes.

Among Fig. 1, penholder (8) head has a lead for retractable pencil hole, this lead for retractable pencil hole becomes matched in clearance with the lead for retractable pencil that will adorn usefulness.One bigger hole is arranged behind the lead for retractable pencil hole, can insert lead for retractable pencil pipe (4).Spiral wire (7) is arranged outside the lead for retractable pencil pipe (4).Have vertically on the lead for retractable pencil tube wall crack (5), lead for retractable pencil top (3) is arranged in the lead for retractable pencil pipe, lead for retractable pencil top (3) afterbody sidewall has projection (6), and projection (6) stretches out between the helical that is inserted in spiral wire (7) from crack (5) of lead for retractable pencil tube wall.Lead for retractable pencil top (3) front end has the key (2) that stretches out, and the front end of key (2) has the tail end of a uncinus lead for retractable pencil (1) that a keyway that matches with the preceding key (2) in lead for retractable pencil top is arranged.Lead for retractable pencil (1) is inserted in to interlock in the lead for retractable pencil hole of penholder (8) head with key with keyway mutually with lead for retractable pencil top (3).Spiral wire (7) the last period of pitch is the twice of back face pitch.

Among Fig. 5, spiral wire (7) rear end is inserted with a handle (9), and handle (9) becomes interference fit with spiral wire (7).Penholder (8) afterbody has penholder seal (10), and after penholder seal (10) was fixed in the mode of interference fit or gummed with the penholder afterbody, the position of handle (9) and spiral wire (7) promptly was limited in the penholder (8), can only rotate in penholder (8).

During use, rotate handle (9), handle (9) promptly drives spiral wire (7) and rotates, and just vertically moves in lead for retractable pencil pipe (4) on lead for retractable pencil top (3) under the promotion of spiral wire (7) helical.Move forward and to eject lead for retractable pencil (1), mobile backward can the drive in lead for retractable pencil (1) the withdrawal pen.Lead for retractable pencil top (3) is at the end to sinciput, the key (2) of lead for retractable pencil top front end just exposes outside the nib, backward rotation tube (9) once slightly again, because spiral wire (7) the last period of pitch is the twice of back face pitch, therefore the helical behind the lead for retractable pencil top projection (6) has just had a segment distance with projection (6), and the position on lead for retractable pencil top (3) is motionless.The lead for retractable pencil (1) that at this moment tail end can be had a corresponding keyway and plumbous top front end expose that key (2) nib outside is interlocked and lead for retractable pencil (1) and lead for retractable pencil are pushed up (3) and push penholder (8).After the projection (6) of shifting lead for retractable pencil top onto and thereafter helical got together, backward rotation tube (9) again just can be interior with lead for retractable pencil (1) income penholder (8).There is the lead for retractable pencil pipe (4) that cracks to become interference fit,, strengthened the stability of lead for retractable pencil (1) so lead for retractable pencil pipe (4) plays a damping and stable effect with its elastic force to the lead for retractable pencil (1) that inserts with lead for retractable pencil (1).

Among this embodiment, also can be equipped with as Fig. 6, front end shown in Figure 7 have the vertical section become wedge key the lead for retractable pencil top and the lead for retractable pencil of corresponding keyway is arranged, or adapted such as Fig. 8 have the vertical section to become the lead for retractable pencil of the key of rectangle to push up and have the lead for retractable pencil of corresponding keyway with front end shown in Figure 9.This two cover lead for retractable pencil top and lead for retractable pencil manufacturing, processing are got up easier, and dress is with new lead for retractable pencil convenient (after the lead for retractable pencil top can being recovered to the penholder tail end, directly inserting lead for retractable pencil from the lead for retractable pencil hole of penholder head) but can not rely on rotation handle withdrawal lead for retractable pencil.In use the stability of lead for retractable pencil and last enforcement are basic identical.

Figure 10 is to another embodiment shown in Figure 12, and the key (2) on lead for retractable pencil top (3) extends out from projection (6).Nib (11) is connected with screw thread with penholder (8), and there is the keyway that matches with the key (2) on lead for retractable pencil top lead for retractable pencil (1) rear end.Except above-mentioned aspect, the structure of this embodiment remainder is identical to first embodiment shown in Figure 5 with Fig. 1.(does not draw so omit with embodiment shown in Figure 5 this embodiment rear section).During use, screw off nib (1) earlier, rotating handle (9) is at the end lead for retractable pencil top (3) to penholder (8) head top, make the key (2) on lead for retractable pencil top expose penholder (8) head, backward rotation handle once slightly again is interlocked the key (2) on the lead for retractable pencil that corresponding keyway is arranged (1) and lead for retractable pencil top and lead for retractable pencil (1) and lead for retractable pencil is pushed up (3), advance penholder (8), continue backward rotation handle (9) income lead for retractable pencil (1), screw on nib (11), can use.This example structure is complicated slightly, but the keyway of lead for retractable pencil (1) afterbody relatively can be more shallow, and the keyway part intensity of lead for retractable pencil is higher.

Figure 13 is to embodiment shown in Figure 16, and spiral wire (7) has one section steel wire head (11) to fold from helical and be inserted in the corresponding inside groove of penholder head by a written end, so spiral wire (7) is fixed in the penholder (8); Lead for retractable pencil pipe (4) is rotating.This embodiment remainder structure is identical to embodiment shown in Figure 5 with Fig. 1.Using method is also identical to embodiment shown in Figure 5 with Fig. 1, only will rotate handle and change rotation lead for retractable pencil pipe (4) into.This embodiment also can be equipped with as Fig. 6 and Fig. 7 or as Fig. 8 and lead for retractable pencil top and lead for retractable pencil shown in Figure 9.

Claims

A kind of spiral goes out plumbous propelling pencil, this propelling pencil has a penholder (8), there is spiral wire (7) penholder (8) lining, there is lead for retractable pencil pipe (4) spiral wire (7) lining, on lead for retractable pencil pipe (4) tube wall crack (5) are arranged vertically, there is lead for retractable pencil top (3) lead for retractable pencil pipe (4) lining, and lead for retractable pencil top (3) sidewall has projection (6), projection (6) stretches out between the helical that is inserted in lead for retractable pencil pipe (4) outside nut steel wire (7) from vertically crack (5) of lead for retractable pencil tube wall, it is characterized in that lead for retractable pencil top (3) front end has the key (2) that stretches out.
2, propelling pencil according to claim 1 is characterized in that lead for retractable pencil top (3) the preceding keys that stretch out (2) are that the vertical section is wedge.
3, propelling pencil according to claim 1 is characterized in that lead for retractable pencil top (3) the preceding keys that stretch out (2) are that the vertical section is rectangular.
4, propelling pencil according to claim 1 is characterized in that lead for retractable pencil top (3) the preceding keys that stretch out (2) are that vertical section front end band colludes shape.
5, propelling pencil according to claim 1 is characterized in that spiral wire (7), and the last period, pitch was greater than the pitch of back.
6, the matching used lead for retractable pencil of a kind of and propelling pencil, an end that it is characterized in that lead for retractable pencil (1) have with lead for retractable pencil top (3) the preceding keys that stretch out (2) and match, and the vertical section is the groove that wedge or rectangular or band collude shape.