CN2472953Y - Telescopic pen - Google Patents

Abstract

The utility model relates to a flexible pen technical field. Which is designed for a simplified construction. The pen holder comprises an upper pen tube, a pen cap is arranged at the top of the upper pen tube, the lower part of the upper pen tube is connected with a lower pen tube, the upper pen tube and the lower pen tube form a middle cavity, a pen core is arranged in the middle cavity, a spring is pressed between a convex part of the pen core and the lower pen tube, and the pen holder is characterized in that the upper pen tube is provided with a sliding block in the cavity at the lower part of the pen cap, the sliding block is connected with a pressing rod matched with a surface sliding groove of the upper pen tube, meanwhile, the sliding block is also provided with a clamping block hole, a small spring and a clamping block are. The pen has the advantages of simple structure, easy production and long service life, and is suitable for popularization and application on pens.

Description

retractable pen

The utility model relates to a pen tool, in particular to the technical field of a push type retractable pen.

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-storage, and there is no need to match the cap separately, so there are no disadvantages such as the cap of the ballpoint pen being lost, unable to be clamped and carried, or black liquid polluting clothes. The traditional push-type retractable pen is reported according to the improved structure of the Chinese patent ZL98207583.9 push-type pen, as shown in Figure 5, the main one is that the inner wall of the top of the pen tube is longitudinally protruded with several key ribs separated by a certain distance, which is composed of It is composed of a left rib tenon and a right rib tenon and a slightly concave middle rib tenon in between. The bottom of each rib tenon is provided with inclined ribs, and a key groove is opened between each key rib to facilitate a hollow cylinder to fix the bottom of the key. Several key protrusions protruding at equal distances are respectively embedded in each key groove and the middle rib tenon, so that they can only move up and down. Inside, the protruding upper teeth mesh with the lower teeth, and the outer side of the lower teeth corresponding to the key groove is divided into several key ribs, so as to be selectively embedded in the key groove. There is a key hole at the bottom of the inner and outer rotation keys. It can be fitted and connected with the top of the refill, and the pair of lugs pierced on it are sleeved with the telescopic spring to press the spring, and then the refill and the spring are put together into a lower pen tube with a tube hole , and then the lower pen tube is connected with the upper pen tube, and the fixed key extending out of the upper pen tube is fitted with a pressing cap to form a push type ballpoint pen. Its disadvantages are that the pressing and telescopic mechanism is more complicated, especially the processing of the plastic parts of the fixed key and the rotating key. The structure is more complicated, which is inconvenient for production and processing. Mutual wear and tear also easily shortens its service life.

The purpose of the utility model is to provide a telescopic pen with simple structure, easy production, not easy to wear and long service life.

The technical scheme of the utility model is achieved in this way. It includes an upper pen tube with a cap on the top of the upper pen tube, the lower part of the upper pen tube is connected with the lower pen tube, the upper and lower pen tubes form a middle cavity with a built-in pen core, and a spring is pressed between the convex part of the pen core and the lower pen tube. The feature is that the upper pen tube has a slider in the lower cavity of the pen cap. The slider is connected with a pressure rod that matches the chute on the surface of the upper pen tube. At the same time, the slider also has a hole for a block, a small spring and a block inside, and the block Cooperate with the card hole at the lower part of the chute on the surface of the upper pen tube.

Because the telescopic pen of the present invention adopts the structure of the chute and the block, there is no need for complicated fixed keys and rotating keys, the structure is simplified, and each part is also convenient for production and processing, so that the production cost is reduced, and the parts are not easy to wear due to the structural design. Damage, long service life, suitable for popularization and application on pen tools.

Description of drawings:

Fig. 1. structural exploded view of telescopic pen of the present utility model;

Fig. 2. Structural cross-sectional view of retractable state of the telescopic pen of the present utility model;

Fig. 3. Structural cross-sectional view of the extended state of the utility model telescopic pen;

Figure 4. Partial appearance view of the telescopic pen of the present utility model;

Fig. 5 is a schematic diagram of an exploded structure of a traditional retractable pen in the background technology.

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

As shown in the figure, the retractable pen includes an upper pen tube 1, a lower pen tube 7, a cap 3, a refill 5, and a spring 6. Generally, the upper and lower pen tubes have a circular cross section, and the lower part of the lower pen tube is conical, and the outer The surface is covered with a plastic sleeve, and the plastic sleeve is distributed with multiple friction grooves to provide the writer with a comfortable grip on the pen. The upper pen tube and the lower pen tube are connected by a plug-in tight fit or a screw thread connection, and the upper and lower pen tubes are formed. In the middle cavity, there is a refill 5 in the middle cavity, and the refill is formed with an annular protrusion or lug, and a spring 6 is pressed between the protrusion or lug and the lower pen tube, and the top of the refill passes directly or indirectly through the middle. Block 4 is pressed with slide block 2. In order to make the pen core have sufficient length, the lower part of the slide block has a cavity 23 for accommodating the middle block. The slide block is adapted to the shape and size of the middle cavity of the pen tube, and can slide up and down freely. There is a chute 11 on the surface of the upper pen tube, and the lower part of the chute is connected with a generally circular clamping hole 12. The diameter of the clamping hole is larger than the width of the chute. The push rod 8 of button nail shape is fixed with the screw thread connection, one end of the push rod is a small head inserted in the small hole of the slider, and the other end is a big head, which can be stretched out of the surface of the upper pen tube through the clamping hole 12, and cooperates with the chute for Press by hand, thereby drive the refill to expand and contract through the slider, the slider also has a block hole 22 below the small hole, the block hole is circular, and the built-in short cylindrical block 9 has holes on the inner surface of the block, making it a The spring seat 92 is used to hold the small spring 10, and the outer surface of the block has a limiting concave ring surface 91 that cooperates with the hole, so that the block can expand and contract under the pressure of a finger, and the hole cannot be ejected, and the surface of the block is provided with a push point 93. It is convenient for the writer to press the clamping block with his fingers, so that the clamping block is separated from the clamping hole limit, so that the pen core is retracted into the pen tube under the action of the spring, and the upper pen tube is also inserted into the tight fit or screwed to fix the pen cap. 3. There is a clip on the pen cap.

Its working principle is as follows: when the writer presses down the clamping block with his finger, the clamping block overcomes the elastic force of the small spring and retracts into the clamping hole under the pressure of the finger, so that the clamping block breaks away from the limit of the clamping hole, so the refill is below Under the action of spring force, it retracts into the pen barrel and drives the slider to move upwards. The state diagram is shown in Figure 2; when the writer presses the pressing lever with his finger, the pen core overcomes the action of the spring force below because the pressing lever drives the slider to move downward. Stretch out of the pen barrel, when the clamping block is aligned with the clamping hole, the clamping block will pop up a little part under the action of the small spring, and lock the slider under the limit of the limit concave ring surface, so that the pen core can also be used during writing. It will not retract into the barrel of the pen, and its state diagram is shown in Figure 3.

Claims (7)

1. one kind flexible, it includes the shaft of a writing brush (1), the cap for brush (3) is arranged at last shaft of a writing brush top, last shaft of a writing brush bottom is connected with the following shaft of a writing brush, the shaft of a writing brush forms middle cavity and is built-in with pen core (5) up and down, pressed spring (6) between the pen core protuberance and the following shaft of a writing brush, it is characterized in that the shaft of a writing brush has a slide block (2) in cap for brush lower cavity, slide block is connected with the depression bar (8) that cooperates with last shaft of a writing brush surface chute (11), slide block also has fixture block hole (22) simultaneously, built-in little spring (10) and fixture block (9), fixture block matches with last shaft of a writing brush surface chute bottom hole clipping (12).

2. flexible pen as claimed in claim 1 is characterized in that intermediate mass (4) is arranged between described slide block (2) and the pen core top.

3. flexible pen as claimed in claim 1 is characterized in that described depression bar (8) makes the button spike, and an end is a major part, and the other end be the microcephaly, is tight fit with aperture on the slide block (2) and is connected and fixed or is threaded fixing.

4. flexible pen as claimed in claim 1 is characterized in that described fixture block (9) inside has the hole and becomes little spring spring base (92), and the outside is shaped on the spacing scrobicular ring face (91) that cooperates with hole clipping, and the surface is provided with by point (93).

5. flexible pen as claimed in claim 1 is characterized in that the described shaft of a writing brush of going up is connected or screw connection structure for inserting the formula tight fit with the following shaft of a writing brush (7).

6. flexible pen as claimed in claim 1 is characterized in that the described cap for brush (3) is connected or screw connection structure for inserting formula with the last shaft of a writing brush (1).

7. flexible pen as claimed in claim 1 is characterized in that the described shaft of a writing brush (7) surface down is with garment bag, and garment bag is distributed with the friction groove.

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