CN202806044U

CN202806044U - Screw type telescopic pen

Info

Publication number: CN202806044U
Application number: CN 201220412518
Authority: CN
Inventors: 金荣求
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-20
Filing date: 2012-08-20
Publication date: 2013-03-20
Anticipated expiration: 2022-08-20

Abstract

The utility model discloses a screw type telescopic pen. The screw type telescopic pen comprises a pen rod which is hollow, wherein a core cavity is arranged in the pen rod, a rotation piece is arranged in the core cavity and is hollow, a sliding cavity is arranged in the rotation piece, the outer wall of the rotation piece is provided with a sliding groove which is communicated with the sliding cavity, a piston rod and a pen core are arranged in the sliding cavity, and the pen core is connected on the piston rod. The outer wall of the piston rod is provided with a convex lug which extending out of the sliding groove, the inner wall of the core cavity is provided with inner threads, and an exposed face, extending out of the sliding groove, of the convex lug is provided with outer threads which are matched with the inner threads on the wall of the core cavity. The rotation piece is rotated in the positive direction, the convex lug of the piston rod pushes the pen core spirally along the sliding groove through the matching of the inner threads and the outer threads, and the pushing is stopped until the pen core is in an appropriate position exposed out of the pen rod. When the screw type telescopic pen is not used, the rotation piece is rotated in the negative direction, and the convex lug of the piston rod restores the pen core along the sliding groove through the matching of the inner threads and the outer threads.

Description

A kind of twist-type telescopic pen

Technical field

The utility model relates to the pen technology field, more specifically says a kind of twist-type telescopic pen.

Background technology

Pen, we comparatively have been familiar with commodity only, it comprises penholder and pen core, pen core is arranged in the penholder, a bit in order to protect the pen core tip, also be provided with the cap for brush for the protection of.

Ball pen, pen, water-color paintbrush etc. are put ink class pen usually by a nib and core bar Writing-painting, ink can automatic continuous on, in other words pen core with respect to penholder be do not need mobile; But such as solid fluorescence pen core, water-based wax crayon etc., pen core is comprised of body, can consume in the Writing-painting process, need to be compensated, and namely pen core need to move with respect to penholder.As the pen of this class pen core of the latter, some have the servicing unit of refill expansion function just to need design so.

Wherein, ZL201120088879.1 has just mentioned the servicing unit with refill expansion function, its structure comprises the shaft of a writing brush and sleeve pipe, described sleeve pipe is the cylindrical cavity body of upper end closed bottom end opening, the shaft of a writing brush is arranged in the sleeve pipe cavity, and the corresponding both sides of described shaft of a writing brush outer wall vertically are vertically installed with respectively several grooves, and madial wall corresponding both sides in ferrule openings place are respectively arranged with a projection, described projection is blocked respectively in the groove that is placed on shaft of a writing brush outer wall, is provided with pen core in the described shaft of a writing brush.This Telescopic is by the pusher scheme of segmentation, adjusts the relative position between the shaft of a writing brush and the sleeve pipe, and locks to realize by projection and groove.

The servicing unit of the realization refill expansion that above-mentioned patent is mentioned; it is a kind of common telescopic method; but apply to flexible upper some defectives that exist of pen core; each propelling length of segmentation push type all is consistent; we often can run into the cartridge exposing part actual write too short; but oversize again problem after regulating has drawback in the adjusting, can not satisfy the adjustment of arbitrary dimension.

The utility model content

The purpose of this utility model is to overcome prior art twist-type telescopic pen inconvenience and defective of drawing when realizing that refill expansion is regulated, a kind of simple in structure, easy to adjust, reliable and stable, energy-conserving and environment-protective are provided, and can satisfy the twist-type telescopic pen that pen core stretches out arbitrarily adjusted size.

In order to reach above purpose, the utility model is achieved through the following technical solutions: a kind of twist-type telescopic pen, comprise penholder and the cap for brush, the cap for brush is set on the nib of penholder, it is characterized in that described penholder hollow is provided with the core chamber, core is provided with revolving part in the chamber, described revolving part hollow is provided with sliding chamber, is provided with the chute that communicates with described sliding chamber on the revolving part lateral wall; Be provided with piston rod and pen core in the described sliding chamber, pen core is connected on the piston rod; Be provided with lug on the lateral wall of described piston rod, lug extends outside the described chute; Be provided with internal thread on the described core cavity wall, described lug stretch out be provided with on the outer exposed surface of chute with described core chamber wall on the suitable external screw thread of internal thread.

The utility model twist-type telescopic principle is as follows: after peeling off the cap for brush, the forward rotation rotary body, lug on the piston rod is because under the mating reaction of its external screw thread and core cavity wall internal thread, along chute with the pen core screw propulsion, until stop behind the appropriate location of cartridge exposing penholder; When not needing to use, backward rotation rotary body, the lug on the piston rod be because under the mating reaction of its external screw thread and core cavity wall internal thread, along chute with pen core spiral return.

The utility model does not have more numerous parts than prior art on overall structure, these parts are more simple and convenient on manufacturing process on the contrary.The utility model lug can be mobile in chute very smoothly under the cooperation of internal and external threads, thereby driving pen core moves, cause easy to adjustly and reliable and stable, and the utility model adopts the scheme of screw propulsion, satisfies very much the size that requires that pen core stretches out arbitrarily on the large scale.The utility model is so that such as solid fluorescence pen core, water-based wax crayon etc., even can be rubber, solid gum etc., no longer is fixed being arranged in the penholder, avoids arranging little by little or arrange a lot have more than is needed again, really reaches the purpose of energy-conserving and environment-protective.

As preferably, revolving part comprises the rotary body that places in the core chamber and places the holding body core chamber outside, and the convex ring body of connection rotary body and holding body; Described sliding chamber and chute are arranged on the rotary body; Described convex ring body is suitable with the concave ring groove on the core chamber inner wall at end that is arranged at described penholder.

Rotary body is the original position rotation under the cooperation of convex ring body and concave ring groove, is the smooth rotation that guarantees revolving part on the one hand, is to keep revolving part integral body not to be shifted with respect to penholder on the other hand, guarantees rotational stabilization.Holding body is to make things convenient for the user to use.

As preferably, the tail end of pen core is provided with core print seat, and core print seat is connected on the piston rod by interference fit.

The pen core rear end arranges core print seat, so so that the utility model twist-type telescopic applicability is more extensive, be easy to realize the replacing of pen core, and the requirement of pen core also can be outside applicable solid fluorescence pen core, water-based wax crayon, even can be rubber, solid gum etc.

As preferably, the chute on the revolving part lateral wall is a pair of and is arranged symmetrically with the revolving part central axis; With above-mentioned chute adaptedly, the lug on the lateral wall of piston rod is also for a pair of and be arranged symmetrically with the piston rod central axis.

Chute and lug arrange a pair of, not only process more aspect, and so that screw propulsion get up more smooth and easy, orderly.

Beneficial effect: (1) the utility model does not have more numerous parts than prior art on overall structure, these parts are more simple and convenient on manufacturing process on the contrary.

(2) the utility model lug can be mobile in chute very smoothly under the cooperation of internal and external threads, moves thereby drive pen core, causes easy to adjust and reliable and stable.

(3) the utility model adopts the scheme of screw propulsion, satisfies very much the size that requires that pen core stretches out arbitrarily on the large scale.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model revolving part;

Fig. 3 is the structural representation of the utility model piston rod and pen core.

Among the figure: 1-penholder, the 2-cap for brush, 3-revolving part, 4-piston rod, 5-pen core, 6-core print seat, 11-core chamber, 12-concave ring groove, 31-holding body, 32-rotary body, 33-convex ring body, 34-chute, 41-lug.

The specific embodiment

Be easy to understand understanding in order to make technological means of the present utility model, creation characteristic and to reach purpose, further set forth the utility model below in conjunction with specific embodiment.

Embodiment: such as Fig. 1, Fig. 2 and shown in Figure 3, a kind of twist-type telescopic pen comprises penholder 1 and the cap for brush 2, and the cap for brush 2 is set on the nib of penholder 1.

Penholder 1 hollow is provided with core chamber 11, is provided with revolving part 3 in the core chamber 11, and revolving part 3 hollows are provided with sliding chamber, is provided with the chute 34 that communicates with sliding chamber of a pair of symmetry on revolving part 3 lateral walls; Be provided with piston rod 4 and pen core 5 in the sliding chamber, the tail end of pen core 5 is provided with core print seat 6, and core print seat 6 is connected on 4 of the push rods by interference fit (be that core print seat 6 tail ends are provided with step, it is interior that this step snaps in piston rod 4 cavitys).

Be provided with the lug 41 of a pair of symmetry on the lateral wall of piston rod 4, this extends outside the above-mentioned chute 34 lug 41 correspondences; Be provided with internal thread on 11 inwalls of core chamber, lug 41 stretch out be provided with on the outer exposed surface of chute 34 with core chamber 11 walls on the suitable external screw thread of internal thread.

Revolving part 3 comprises the rotary body 32 that places in the core chamber 11 and the holding body 31 that places outside the core chamber 11 and the convex ring body 33 that connects rotary body 32 and holding body 31; Sliding chamber and chute 34 are arranged on the rotary body 32; Convex ring body 33 is suitable with the concave ring groove 12 on core chamber 11 inner wall at end that are arranged at penholder 1.

Practical: after peeling off the cap for brush, the forward rotation rotary body, rotary body is the original position rotation under the cooperation of convex ring body and concave ring groove, lug on the piston rod is because under the mating reaction of its external screw thread and core cavity wall internal thread at this moment, along rotation direction along chute with the pen core screw propulsion, until the laggard running hand of nib part of cartridge exposing penholder is write; When not needing to use, backward rotation rotary body, lug along rotation direction along chute with pen core spiral return.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a twist-type telescopic pen comprises penholder and the cap for brush, and the cap for brush is set on the nib of penholder, it is characterized in that described penholder hollow is provided with the core chamber, core is provided with revolving part in the chamber, described revolving part hollow is provided with sliding chamber, is provided with the chute that communicates with described sliding chamber on the revolving part lateral wall; Be provided with piston rod and pen core in the described sliding chamber, pen core is connected on the piston rod; Be provided with lug on the lateral wall of described piston rod, lug extends outside the described chute; Be provided with internal thread on the described core cavity wall, described lug stretch out be provided with on the outer exposed surface of chute with described core chamber wall on the suitable external screw thread of internal thread.

2. twist-type telescopic pen according to claim 1 is characterized in that, revolving part comprises the rotary body that places in the core chamber and the holding body that places outside the core chamber and the convex ring body that connects rotary body and holding body; Described sliding chamber and chute are arranged on the rotary body; Described convex ring body is suitable with the concave ring groove on the core chamber inner wall at end that is arranged at described penholder.

3. twist-type telescopic pen according to claim 2 is characterized in that, the tail end of pen core is provided with core print seat, and core print seat is connected on the piston rod by interference fit.

4. according to claim 1 and 2 or 3 described twist-type telescopic pens, it is characterized in that the chute on the revolving part lateral wall is a pair of and is arranged symmetrically with the revolving part central axis; With above-mentioned chute adaptedly, the lug on the lateral wall of piston rod is also for a pair of and be arranged symmetrically with the piston rod central axis.