CN1325284C - Retractable pen - Google Patents

Abstract

A retractable pen, comprising an upper pen tube (20), a lower pen tube (10), an inner sliding sleeve (30), a pen core (50) and a spring (14), characterized in that the lower end of the lower pen tube (10) Linked to the nib tube (13), its upper end slidably extends into the inner cavity of the upper pen tube (20), and is provided at the end which cannot be disengaged from the lower end convex ring (21) of the upper pen tube (20) inner cavity. flange (12), the inner sliding sleeve (30) is slidably extended from the end of the flange (12) into the inner chamber of the lower pen tube (10) and is socketed with the tail end of the pen core (50). The entry end is provided with an outer flange (32) that cannot be detached from the flange (12) of the lower pen tube (10). The advantage of the present invention is that the axial sliding of the upper and lower pen tubes is used to compress or release the pen core, so that the direct pen core stretching is changed to the axial sliding of the upper and lower pen tubes to achieve the purpose of stretching the pen core. Because the structure of the axial sliding of the upper and lower pen tubes is firm and strong, it effectively avoids the shortcoming that the telescopic part of the telescopic pen is easy to break, and when the present invention is writing, it forms a multi-stage pen tube to disperse the stress, so that the writing pen head tube Not easy to break, effectively prolonging the service life of the retractable pen.

Description

a retractable pen

technical field

The invention relates to the technical field of pen tools, especially the push type retractable pen.

Background technique

With the advancement of science and technology and the diversification of human activities, the development of pens tends to be diversified. Among many pens, the push-type retractable pen has become a long-lasting product. The reason for this lies in the push-type The nib of the ballpoint pen has the function of self-shrinking, and there is no need to match the pen cap separately, so there are no disadvantages such as loss of the cap of the ballpoint pen and inability to hold and carry it. In the Chinese utility model patent whose patent number is 01238915.3, the inventor's structure is that it includes an upper pen tube with a cap on the top of the upper pen tube. There is a spring between the pen core and the convex part of the pen core and the lower pen tube. It is characterized in that the upper pen tube has a slider in the lower cavity of the pen cap. The slide block also has a block hole with a built-in small spring and a block, and the block matches with the hole at the lower part of the chute on the surface of the upper pen tube. The advantage of this structure is that there is no need for complex fixed keys and rotating keys, the structure is simplified, and the production and processing of each part is convenient, so that the production cost is reduced, and the parts are not easy to be damaged due to structural design, and the service life is long. However, its disadvantage is that the upper and lower pen tubes are directly connected, and the stress at the tip of the pen is relatively concentrated, which may easily cause the tip of the pen to break. In addition, the volume is relatively large, and the advantages of small size and easy portability of the telescopic pen are not fully utilized; There is an intermediate block between the sliders, the design is not simple and clear enough, and again, sometimes after writing, forget to operate to retract the pen core into the pen barrel, and directly hang the pen buckle on the pocket, which will cause the ink to contaminate the clothes , so its structure still needs to be improved.

Contents of the invention

The technical problem to be solved by the present invention is to provide a retractable pen with simple and firm structure, beautiful overall appearance, easy operation and long service life.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: it includes an upper pen tube, a lower pen tube, an inner sliding sleeve, a pen core and a spring, the pen core can be movably placed in the middle cavity formed by the upper and lower pen tubes, and the spring The sleeve is placed on the refill and touches the convex part of the refill. The inner sliding sleeve is slidably placed in the upper pen tube, and a block hole is opened on the inner sliding sleeve. A small spring and a clip are built in the block hole. block, the block can be matched with the card hole on the chute of the upper pen tube in the use state, and the block is connected with a pressure bar matched with the chute, and it is characterized in that the lower end of the lower pen tube is connected with the nib tube, Its upper end slidably extends into the inner cavity of the upper pen tube, and a flange that cannot be separated from the lower end of the inner cavity of the upper pen tube is provided at this end, and the inner sliding sleeve is slidably inserted into the lower pen from the flange end The inner cavity of the tube touches against the tail end of the pen core, and an outer flange that cannot be separated from the flange of the lower pen tube is provided at the end of the extension.

The above-mentioned block is also provided with a step-shaped convex level, which can be matched with the clamping holes at both ends of the upper pen tube chute when in use.

The above-mentioned upper pen tube cover can be provided with a pen clip, so that one end of the clip on the pen clip can abut against the outer surface of the upper pen tube, and the clip can be arranged directly above the chute of the upper pen tube, A guide groove is arranged on the sheet, so that one end of the pressure rod extends from the guide groove and the chute to connect with the block, and the other end is located on the outer edge surface of the clip guide groove.

The above-mentioned pressing rod can be designed in the shape of a button nail, the big head is located on the outer edge of the guide groove, and the small head is connected with the clamping block in a tight fit or threaded connection.

The above-mentioned convex part of the pen core can be the step surface of the large diameter of the pen core.

The above-mentioned lower pen tube can be divided into two parts, a large diameter and a small diameter. One end of the large diameter is connected with the nib tube, and the small diameter can extend into the inner cavity of the upper pen tube.

The above-mentioned inner slide can be divided into two parts, a large diameter and a small diameter. The small diameter can extend into the inner cavity of the lower pen tube, and the block hole is located on the large diameter of the inner slide.

The above-mentioned connection between the lower pen tube and the pen tube can be a plug-in tight fit connection or a threaded connection.

Compared with the prior art, the present invention has the advantage of using the axial sliding of the upper and lower pen tubes to compress or release the pen core, so that the direct pen core expansion and contraction is changed to the axial sliding of the upper and lower pen tubes to achieve the purpose of telescopic pen core. Because the structure of the axial sliding of the upper and lower pen tubes is firm and strong, it effectively avoids the shortcoming that the telescopic part of the telescopic pen is easy to break, and when the present invention is writing, it forms a multi-stage pen tube to disperse the stress, so that the writing pen head tube It is not easy to break, which effectively prolongs the service life of the retractable pen. At the same time, due to the use of multi-level pen holders, the volume of the retractable pen is greatly reduced when the retractable pen is in the retracted state; It is easy to write and easy to carry, and when the pen is in use, the pressure rod is locked in the hole at the lower end of the upper pen tube chute, which is located at the front end of the clip, so that the pressure rod is blocked at the front opening of the clip If the user forgets to return the retractable pen to the storage state, the clip of the pen clip cannot be used to clamp the retractable pen in the pocket, so that the ink on the pen core will not stain the clothes. And the present invention is simple in structure, easy to operate, and the chute of the upper pen barrel and the guide groove on the pen clip are arranged to overlap up and down, and the pressing rod is put in it, so that the retractable pen looks beautiful and tidy as a whole, so the present invention The retractable pen is a very practical product, and it is worth popularizing and applying.

Description of drawings

Fig. 1 is a three-dimensional exploded schematic view of an embodiment of the present invention;

Fig. 2 is a perspective view of Fig. 1 in an unwritten state after assembly;

Fig. 3 is a three-dimensional schematic diagram of Fig. 2 in operation when preparing to write;

Fig. 4 is a schematic perspective view of Fig. 2 when it is in a writing state;

Fig. 5 is a side sectional view of Fig. 2;

Fig. 6 is a side sectional view of Fig. 3;

FIG. 7 is a side sectional view of FIG. 4 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 5, this embodiment is mainly composed of an upper pen tube 20, a lower pen tube 10, an inner sliding sleeve 30 and a pressure rod 40, wherein the upper pen tube 20 is sleeved on the lower pen tube 10 with a small diameter On the 11 outer peripheral surface, the upper and lower pen tubes 20 and 10 form an axially telescopic movable relationship, and the small diameter 11 tail end of the lower pen tube 10 is provided with a flange 12, and the front end of the upper pen tube 20 is provided with a The protruding ring 21 makes telescopic movement between the upper and lower pen tubes 20 and 10 but can not break away from. Its inner sliding sleeve 30 is arranged on the inside of upper and lower pen tubes 20, 10 and can slide axially forward and backward, and the small diameter 31 of the upper front section of the inner sliding sleeve 30 is inserted in the lower pen tube 10, and its front end is provided with an outer flange 32, so that The front section tube 31 of the inner sliding sleeve 30 slides in the front pen tube but cannot be separated from the lower pen tube, and the front tube 31 is provided with a pen core 50, and the lower end of the lower pen tube 10 is connected with the pen tube 13, and is located between the pen core 50 and the pen tube 13 A spring 14 is placed between them, and the spring 14 is sleeved on the refill 50; the large diameter 33 of the inner sliding sleeve 30 slides in the upper pen tube 20, and the drop between the large diameter 33 and the small diameter 31 makes the inner sliding sleeve 30 large diameter 33 slides in the upper pen tube 20 but does not break away from the upper pen tube 20; the large diameter 33 of the inner sliding sleeve 30 is provided with a radial block hole 34, and a block 35 and a small return spring are arranged in the radial block hole 34 36, and the outer end of the block 35 is connected to the pressure rod 40, and the pressure rod 40 can move back and forth in a corresponding chute 22 on the upper pen tube 20, and the upper and lower ends of the chute 22 are respectively provided with an upper card hole 24 and a lower The card hole 23; and the card block 35 is provided with a step-shaped protrusion 351, which is matched with the upper and lower card holes, and just coincides with the chute 22 to slide forward and backward, and the step-shaped protrusion 351 protrudes from the upper or lower card hole 24 or 23 are stuck. On the upper pen tube 20, a pen holder 60 is provided, so that the lower end (front end) of its clip 61 is against the outer surface of the upper pen tube 20, and the clip 61 can be positioned corresponding to the chute 22 of the upper pen tube 20. Just above the chute 22, a corresponding guide groove 62 is set on the clip 61, so that the pressure rod 40 is positioned on the outer edge surface of the guide groove 62, and the pressure rod 40 is made into a button nail shape, which is convenient for people to press by hand. On the outer edge of the groove 62, the small head is connected with the clamping block 35 in a tight fit or screw connection.

The usage status of the telescopic pen 1 is as follows:

As shown in Fig. 2 and Fig. 5, when the pen is to be stored, the pressure rod 40 (linked with the block 35) can be positioned in the upper card hole 24 of the chute 22 of the upper pen tube 20, so that the pen core 50 Fully retract in the lower pen tube 10 without exposing the refill mouth 51. At this moment, the front portion of the upper pen tube 20 is covered on the outer edge of the rear section tube 11 of the lower pen tube 10, so that the rear section tube 11 is not exposed, and the upper and lower The lower pen tubes 20, 10 are promptly folded into a short rod state, which can be conveniently stored in a pocket.

As shown in Figure 3 and Figure 6, when the pen is about to write, first operate (press) the pressure lever 40 to make the block 35 break away from the clamping hole 24, and then pull the upper and lower pen tubes 20, 10 apart relatively, that is, to write Tube 20 slides back and exposes the trailing pen path 11 of lower pen tube 10, forming a long rod state. At this time, pressing rod 40 is also relatively displaced to the lower end of chute 22 but not as far as lower clamping hole 23, and pen core 50 is also It is also retracted in the front pen tube 10 without exposing the nib 51 .

As shown in Fig. 4 and Fig. 7, after connecting the process, push the pressing rod forward to make the clamping block 35 snap into the lower clamping hole 23, and the inner sliding sleeve 30 moves forward with the locking block 35, and at the same time Push the refill mouth 51 forward so that the pen stretches out of the nib tube 13 and locates it. At this moment, the upper and lower pen tubes 20 and 10 have relatively drawn back the growth rod state, so a better writing state can be achieved. The elastic force of the spring 14 can be used to make the pen core 50 press against the inner sliding sleeve 30, and when the operation is reversed, the backward restoring force of the spring 14 can also be used to make the inner sliding sleeve 30 retract and reset more easily. operate.

In addition, the retractable pen 1 can be used with a pen holder 60, see the writing state shown in Figure 4 and Figure 7, at this time the pressure rod 40 is locked at the lower card hole 23, that is, the front end (lower end) of the clip 61, then The connecting rod 41 of the pressing rod 40 can just block the opening of the front end (i.e. the lower end) of the clip 61. If the user forgets to return the retractable pen to the storage state, the clip 61 of the clip 60 cannot be used to hold the pen. The retractable pen is clamped in the pocket, thereby preventing the ink of the pen core mouth 51 from exposing and not shrinking from staining the clothes.

The pressing rod 40 is for the user to press and slide, and it can also become the focus of attention. Therefore, for ergonomics, the pressing rod 40 can be designed as a molded body of an appropriate size, or a pattern can be attached on its surface, so as to serve as an advertisement. Effect.

Claims (10)

1. A retractable pen, comprising an upper pen tube (20), a lower pen tube (10), an inner sliding sleeve (30), a pen core (50) and a spring (14), the pen core (50) can be movably placed In the middle cavity formed by the upper and lower pen tubes (20, 10), the spring (14) is sleeved on the pen core (50) and contacts with the convex part of the pen core (50), and the inner sliding sleeve (30) is slidably Put it in the upper pen tube (20), and have a block hole (34) on the inner sliding sleeve (30), and a small spring (36) and a block (35) are built in the block hole (34). The block (35) can be matched with the card holes (23, 24) on the chute (22) of the upper pen tube (20) in the state of use, and the block (35) is connected with a The pressure rod (40) is characterized in that the lower end of the lower pen tube (10) is connected to the nib tube (13), and its upper end can slidably extend into the inner cavity of the upper pen tube (20), and there is a The flange (12) that cannot be disengaged from the flange (21) at the lower end of the inner cavity of the upper pen tube (20), the inner sliding sleeve (30) slidably extends into the lower pen tube (10) from the end of the flange (12) The inner cavity touches against the tail end of the pen core (50), and is provided with an outer flange (32) that cannot be separated from the flange (12) of the lower pen tube (10) at the end of the extension. 2. The retractable pen according to claim 1, characterized in that said block (35) is provided with a stepped convex level (351), and the convex level (351) can be connected with the upper pen tube ( 20) The clamping holes (24, 23) at both ends of the chute (22) are matched and matched. 3. The retractable pen according to claim 1 or 2, characterized in that the upper pen tube (20) is sheathed with a pen clip (60), so that one end of the clip (61) on the pen clip (60) abuts against Lean on the outer surface of upper pen tube (20). 4. The retractable pen according to claim 3, characterized in that the clip (61) of the pen holder can be correspondingly arranged directly above the chute (22) of the upper pen tube (20), and is positioned on the clip (61) ) is provided with a guide groove (62), so that one end of the pressure rod (40) extends from the guide groove (62) and the chute (22) to connect with the block (35), and the other end is located at the clip (61) guide On the outer edge of the groove (62). 5. The telescopic pen according to claim 4, characterized in that the pressure rod (40) is in the shape of a button nail, the big head is located on the outer edge of the guide groove (62), and the small head is tightly fitted or threaded. Connect together with clamping block (35). 6. The retractable pen according to claim 1 or 2, characterized in that the convex part of the pen core (50) is a step surface of the large diameter of the pen core. 7. The retractable pen according to claim 1 or 2, characterized in that the lower pen tube (10) is divided into two parts, a large diameter and a small diameter (11), one end of the large diameter is connected with the nib tube (13), and the small diameter ( 11) can stretch into upper pen tube (20) inner cavity. 8. The retractable pen according to claim 1 or 2, characterized in that the inner sliding sleeve (30) is divided into two parts, the large diameter (33) and the small diameter (31), and the small diameter (31) can extend into the lower pen tube ( 10) Inner cavity, the block hole (34) is located on the large diameter (33) of the inner sliding sleeve (30). 9. The retractable pen according to claim 1 or 2, characterized in that the connection between the lower pen tube (10) and the nib tube (13) is a plug-in tight fit connection or a threaded connection. 10. The retractable pen according to claim 3, characterized in that the lower pen tube (10) is divided into two parts, a large diameter and a small diameter (11), one end of the large diameter is connected with the nib tube (13), and the small diameter (11) Can stretch into upper pen tube (20) inner cavity.

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