Pen capable of sliding out refill

Abstract

The utility model relates to the technical field of daily necessities, and discloses a pen capable of sliding out a refill, which comprises an outer sleeve, an inner sleeve is slidably connected in the outer sleeve, an anti-dropping groove is arranged at the inner top end of the outer sleeve, a pressing head is integrally formed at the end part of the inner sleeve, and a connecting pipe is fixedly connected to the end part of the inner sleeve. The outer wall of the connecting pipe is provided with a limiting end matched with the anti-disengagement groove, the anti-disengagement block on the outer wall of the connecting pipe is driven to enter the end of the outer sleeve through movement of the inner sleeve, the anti-disengagement groove is formed in the inner wall of the end of the outer sleeve, and after the anti-disengagement block makes contact with the anti-disengagement groove, corresponding deformation can be generated; according to the anti-disengagement device, the anti-disengagement block can be clamped into the anti-disengagement groove, limiting of the anti-disengagement block is achieved through the anti-disengagement protrusion in the anti-disengagement groove, when the anti-disengagement device is pulled out, the inner sleeve is pressed to move in the opposite direction to drive the anti-disengagement block to move, and at the moment, the anti-disengagement block can be assisted to be separated from the anti-disengagement groove through the oblique square end and deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a pen with a core that can be slid out. Background Art

[0002] The pen, as a carrier of cultural heritage, has always played a vital role. Now in our daily life, the pen has always been an important writing tool that can help people write.

[0003] In the prior art, most ballpoint pens use a press-type structure to eject the core, which is convenient for users to write. Although this method can eject the inner core of the ballpoint pen, it is easy for the inner core of the ballpoint pen to be retracted due to accidental touch during use, and the ejection structure of the ballpoint pen is easy to cause its internal structure to fall off after being hit, and the parts are easily damaged during the disassembly process, affecting use. Utility Model Content

[0004] The utility model aims to provide a pen with a sliding core, which solves the problems that the inner core of the ballpoint pen is easily retracted due to accidental touching, and the ejection structure of the ballpoint pen is easily caused to fall off after being hit, and the parts are easily damaged during the disassembly process, which affects the use.

[0005] The utility model provides the following technical solution: a pen with a sliding core, comprising an outer sleeve, the inner sleeve of the outer sleeve is slidably connected to an inner sleeve, an anti-slip groove is provided at the inner top end of the outer sleeve, a pressing head is integrally formed at the end of the inner sleeve, a connecting tube is fixedly connected to the end of the inner sleeve, and the outer wall of the connecting tube is provided with a limiting end that cooperates with the anti-slip groove.

[0006] By adopting the above scheme, the anti-slip groove inside the outer sleeve cooperates with the limiting end on the inner sleeve connecting tube to ensure the stability of the inner sleeve sliding inside the outer sleeve, effectively preventing the inner sleeve from accidentally sliding out or falling off during use, and ensuring the stability and reliability of the pen. The coordinated design of the anti-slip groove and the limiting end ensures that the inner sleeve will not accidentally pop out or fall off during the extension or retraction of the pen core, thereby avoiding possible safety hazards.

[0007] As a preferred embodiment of the above technical solution, the limiting end includes an anti-slip block fixedly connected to the top of the connecting pipe, the four corners of the outer wall of the anti-slip block are formed with oblique ends, and the inner wall of the anti-slip groove is symmetrically fixedly connected with trapezoidal anti-slip protrusions that cooperate with the anti-slip block.

[0008] By adopting the above scheme, the anti-slip block is fixedly connected to the upper top of the connecting tube, thereby ensuring a firm connection between the inner sleeve and the outer sleeve, effectively preventing the inner sleeve from accidentally sliding or falling off in the outer sleeve, and improving the overall stability of the ballpoint pen. The oblique end design at the four corners of the outer wall of the anti-slip block cooperates with the trapezoidal anti-slip protrusion on the inner wall of the anti-slip groove to form a unique locking mechanism. In addition, the anti-slip protrusion, outer sleeve and inner sleeve used in this case are all made of plastic material and can produce corresponding deformation.

[0009] As a preferred embodiment of the above technical solution, the outer wall of the outer sleeve is provided with an outer groove, the outer wall of the inner sleeve is fixedly connected with a connecting rod, and the connecting rod is slidably connected to the inside of the outer groove, and the outer wall of the connecting rod is fixedly connected with a splint.

[0010] With the above solution, the connecting rod effectively connects the inner sleeve and the outer sleeve by sliding in the outer groove, forming a stable structure. Due to the existence of the connecting rod and the splint, the contact between the inner sleeve and the outer sleeve is more uniform, reducing friction and wear. This design can extend the service life of the ballpoint pen and improve the durability of the product.

[0011] As a preferred embodiment of the above technical solution, a writing pen body is placed inside the inner sleeve, a pen tip is fixedly connected to the end of the writing pen body, a plurality of extrusion rods abutting the end of the writing pen body are fixedly connected to the inner side wall of the inner sleeve, and the extrusion rods are communicated with the inside of the pressing head.

[0012] With the above solution, the design of the extrusion rod and the pressing head being connected internally means that when the pressing head is pressed, the extrusion rod can be pushed inward by the internal transmission mechanism, thereby more tightly fixing the writing pen body and preventing the pen core from accidentally falling off during the writing process, thereby ensuring that the pen tip remains stable during the writing process and is not prone to shaking or deflecting, thereby improving the accuracy and comfort of writing.

[0013] As a preferred embodiment of the above technical solution, the inner side wall of the outer sleeve is located on the outer wall of the pen tip and is sleeved with a limiting spring.

[0014] By adopting the above scheme, the limit spring can ensure that there is a certain buffer space for the pen tip when it is subjected to external impact or unexpected pressure, preventing the pen tip from directly colliding with the inner wall of the outer sleeve, thereby protecting the pen core and the pen tip from damage. Especially when writing, if there is a sudden large force or turn, the limit spring can prevent the pen core from breaking due to excessive bending.

[0015] As a preferred embodiment of the above technical solution, an anti-slip protrusion for increasing friction is formed on the outer wall of the inner sleeve at one side of the anti-slip block, an upper mark is formed on the outer wall of the inner sleeve above the anti-slip protrusion, and a lower mark is formed on the outer wall of the inner sleeve below the anti-slip protrusion.

[0016] With the above solution, the anti-slip protrusion design increases the friction between the inner sleeve and the fingers, and the upper and lower marks provide clear reference points for the user. The user can quickly understand the status of the pen by observing these marks and make corresponding adjustments or operations.

[0017] As a preferred embodiment of the above technical solution, the end of the pressing head extends to the outside of the end of the outer sleeve, the outer wall of the outer sleeve is provided with a groove, and the main body of the inner sleeve is located in the groove.

[0018] With the above solution, the groove design on the outer wall of the outer sleeve allows the main part of the inner sleeve to be located therein, which helps to reduce accidental sliding of the pen during use. The anti-slip protrusions formed on the outer wall of the inner sleeve can increase the friction between the fingers and the pen, preventing the pen from slipping out of the hand due to sweating or sliding of the hand during writing.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] In the utility model, a limited end is set, and the movement of the inner sleeve drives the anti-slip block on the outer wall of the connecting tube to enter the end of the outer sleeve, and an anti-slip groove is opened on the inner wall of the end of the outer sleeve. When the anti-slip block contacts the anti-slip groove, corresponding deformation can be generated, so that the anti-slip block can be clamped in the anti-slip groove, and the anti-slip protrusion inside the anti-slip groove is used to limit the anti-slip block. When withdrawing, the inner sleeve is pressed to move in the opposite direction to drive the anti-slip block to move. At this time, the anti-slip block can be separated from the anti-slip groove by the oblique end and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a pen with a sliding core;

[0022] Figure 2 It is a schematic diagram of the overall structure of a pen with a sliding core;

[0023] Figure 3 It is a schematic diagram of the partial dissection structure of an inner sleeve in a pen with a sliding core;

[0024] Figure 4 The present invention is a schematic diagram of the partial dissected structure of a part of the outer sleeve of a pen with a sliding core.

[0025] In the figure: 1. outer sleeve; 11. outer groove; 12. writing pen body; 13. pen tip; 14. limit spring; 2. inner sleeve; 21. pressing head; 22. clamp; 221. connecting rod; 23. upper mark; 24. anti-slip protrusion; 25. lower mark; 26. connecting rod; 3. anti-slip block; 31. oblique end; 32. connecting tube; 33. anti-slip groove; 34. anti-slip protrusion. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a pen with a sliding core, comprising an outer sleeve 1, an inner sleeve 2 is slidably connected inside the outer sleeve 1, an anti-slip groove 33 is provided at the inner top end of the outer sleeve 1, a pressing head 21 is integrally formed at the end of the inner sleeve 2, a connecting tube 32 is fixedly connected to the end of the inner sleeve 2, and the outer wall of the connecting tube 32 is provided with a limiting end that cooperates with the anti-slip groove 33.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the limiting end includes an anti-slip block 3 fixedly connected to the top of the connecting tube 32, and the four corners of the outer wall of the anti-slip block 3 are formed with oblique ends 31, and the inner wall of the anti-slip groove 33 is symmetrically fixedly connected with a trapezoidal anti-slip protrusion 34 that cooperates with the anti-slip block 3, so that the anti-slip protrusion 34 and the anti-slip block 3 can cooperate with each other to form a stable clamping structure, and because the outer wall of the anti-slip block 3 is formed with the oblique end 31, it can be quickly separated from the anti-slip groove 33 after the connecting tube 32 is subjected to force.

[0029] like Figure 1 and Figure 2 As shown, an outer groove 11 is formed on the outer wall of the outer sleeve 1, a connecting rod 221 is fixedly connected to the outer wall of the inner sleeve 2, and the connecting rod 221 is slidably connected to the inside of the outer groove 11, a clamping plate 22 is fixedly connected to the outer wall of the connecting rod 221, a writing pen body 12 is placed inside the inner sleeve 2, a pen head 13 is fixedly connected to the end of the writing pen body 12, a plurality of extrusion rods 26 abutting the end of the writing pen body 12 are fixedly connected to the inner wall of the inner sleeve 2, and the extrusion rods 26 are communicated with the inside of the pressing head 21, so that the writing pen body 12 can be squeezed by the extrusion rods 26 and the pressing head 21.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the inner wall of the outer sleeve 1 is located at the outer wall of the pen head 13 and is sleeved with a limit spring 14, and the outer wall of the inner sleeve 2 is located on one side of the anti-slip block 3 to form an anti-slip protrusion 24 for increasing friction, so that when pressure is applied to the inner sleeve 2, the finger can be prevented from slipping, and the outer wall of the inner sleeve 2 is located above the anti-slip protrusion 24 to form an upper mark 23, and the outer wall of the inner sleeve 2 is located below the anti-slip protrusion 24 to form a lower mark 25, the end of the pressing head 21 extends to the outside of the end of the outer sleeve 1, the outer wall of the outer sleeve 1 is provided with a groove, and the main part of the inner sleeve 2 is located in the groove.

[0031] Working principle: When in use, the user can press the pressing head 21 to drive the inner sleeve 2 to move, and the pressing head 21 will squeeze the squeezing rod 26, so that the squeezing rod 26 drives the writing pen body 12 and the pen tip 13 to squeeze the limit spring 14. At this time, the pen tip 13 at the end of the writing pen body 12 will extend out of the end of the outer sleeve 1, and under the movement of the inner sleeve 2, the anti-dropping block 3 will also move inside the outer sleeve 1, and the movement of the inner sleeve 2 drives the anti-dropping block 3 on the outer wall of the connecting tube 32 to enter the end of the outer sleeve 1, and an anti-dropping groove 33 is provided on the inner wall of the end of the outer sleeve 1. When the anti-dropping block 3 contacts the anti-dropping groove 33, corresponding deformation can be generated. The anti-slip block 3 can be clamped in the anti-slip groove 33, and the anti-slip protrusion 34 in the anti-slip groove 33 is used to limit the anti-slip block 3. When withdrawing, the inner sleeve 2 is pressed in the opposite direction to drive the anti-slip block 3 to move. At this time, the anti-slip block 3 can be separated from the anti-slip groove 33 by the oblique end 31 and the deformation. The four corners of the outer wall of the anti-slip block 3 are provided with oblique ends 31, which can deform the anti-slip block 3 and the outer sleeve 1 after contacting the anti-slip protrusion 34 and applying a thrust or pulling force, so that the anti-slip block 3 can easily enter the anti-slip groove 33 to complete the clamping. At this time, the writing pen body 12 and the pen head 13 can be used for writing.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A pen with a sliding core, comprising an outer sleeve (1), characterized in that: The inner sleeve (2) is slidably connected to the inner part of the outer sleeve (1); an anti-slip groove (33) is provided at the inner top end of the outer sleeve (1); a pressing head (21) is integrally formed at the end of the inner sleeve (2); a connecting pipe (32) is fixedly connected to the end of the inner sleeve (2); and a limiting end that cooperates with the anti-slip groove (33) is provided on the outer wall of the connecting pipe (32).

2. A pen with a sliding core according to claim 1, characterized in that: The limiting end comprises an anti-slip block (3) fixedly connected to the top end of the connecting pipe (32), the outer side wall of the anti-slip block (3) is formed with oblique ends (31) at four corners, and the inner side wall of the anti-slip groove (33) is symmetrically fixedly connected with a trapezoidal anti-slip protrusion (34) that cooperates with the anti-slip block (3).

3. A pen with a sliding core according to claim 1, characterized in that: The outer wall of the outer sleeve (1) is provided with an outer groove (11), the outer wall of the inner sleeve (2) is fixedly connected with a connecting rod (221), and the connecting rod (221) is slidably connected inside the outer groove (11), and the outer wall of the connecting rod (221) is fixedly connected with a clamping plate (22).

4. A pen with a sliding core according to claim 1, characterized in that: A writing pen body (12) is placed inside the inner sleeve (2), a pen head (13) is fixedly connected to the end of the writing pen body (12), a plurality of squeezing rods (26) abutting against the end of the writing pen body (12) are fixedly connected to the inner side wall of the inner sleeve (2), and the squeezing rods (26) are communicated with the inside of the pressing head (21).

5. A pen with a sliding core according to claim 4, characterized in that: The inner side wall of the outer sleeve (1) is sleeved with a limit spring (14) located at the outer wall of the pen tip (13).

6. A pen with a sliding core according to claim 1, characterized in that: An anti-skid protrusion (24) for increasing friction is formed on the outer wall of the inner sleeve (2) at one side of the anti-slip block (3), an upper mark (23) is formed on the outer wall of the inner sleeve (2) above the anti-skid protrusion (24), and a lower mark (25) is formed on the outer wall of the inner sleeve (2) below the anti-skid protrusion (24).

7. A pen with a sliding core according to claim 1, characterized in that: The end of the pressing head (21) extends to the outside of the end of the outer sleeve (1); the outer wall of the outer sleeve (1) is provided with a groove, and the main body of the inner sleeve (2) is located in the groove.

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