Needle tube double-ball pen point

Abstract

The utility model relates to the technical field of gel pens, in particular to a needle tube double-ball pen point which comprises a first needle tube head, the lower end of the first needle tube head is fixedly connected with a second needle tube head, a clamping groove is formed in the lower end of the second needle tube head, a second ball is rotationally connected into the clamping groove, and a supporting mechanism is arranged in the first needle tube head and the second needle tube head. The supporting mechanism comprises three sets of first abutting rings, a buffering cushion, three sets of second abutting rings, an ink guiding core, two sets of first supporting springs, second supporting springs and a third abutting ring. The ink guiding core is slidably connected with the inner sides of the second abutting rings. The supporting mechanisms are installed in the first ink guiding hole and the second ink guiding hole, the ink guiding core penetrates through the inner sides of the supporting mechanisms, the side face of the ink guiding core is supported through the supporting mechanisms, the ink guiding core is prevented from being broken, and the use safety of the ink guiding core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gel pens, and particularly relates to a needle-tube double-bead pen tip. Background Art

[0002] The existing double-bead pen tip has two ball beads that are abutted against each other in the front and back directions along the length direction of the pen tip body. A ball seat portion is provided between the two ball beads, and a through hole is provided on the ball seat portion. The two ball beads pass through the through hole to achieve abutting cooperation.

[0003] Among them, the published patent number CN216268341U discloses an aqueous spring double-bead pen tip, including an ink cartridge. A first ink guiding core is provided inside the ink cartridge; the front end of the ink cartridge is connected with a pen tip, and a through-flow ink channel is formed inside the pen tip. A ball bead portion is provided at the ink outlet end of the ink channel; a second ink guiding core is provided in the ink channel. The front end of the second ink guiding core abuts against the ball bead portion, and the rear end of the second ink guiding core is connected with the first ink guiding core; a spring is provided in the ink channel, and the spring is coaxially arranged with the second ink guiding core. The front end of the spring abuts against the ball bead portion, and a protruding limiting portion is provided on the inner wall of the ink channel. The rear end of the spring abuts against the limiting portion, and the spring abuts against the ball bead portion to apply a force for sealing the ink outlet end of the ink channel by the ball bead portion.

[0004] During the use process, the ink is drained to the surfaces of the two groups of ball beads through the ink guiding core. However, since the gel pen is prone to the risk of dropping during use, and the side of the ink guiding core lacks a supporting structure, when the gel pen drops, it is easy to cause the ink guiding core inside the pen tip to break, thereby resulting in unsmooth ink output and making the gel pen unable to be used normally.

[0005] Therefore, it is very necessary to invent a needle-tube double-bead pen tip to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a needle-tube double-bead pen tip to solve the problems in the technology that since the gel pen is prone to the risk of dropping during use, and the side of the ink guiding core lacks a supporting structure, when the gel pen drops, it is easy to cause the ink guiding core inside the pen tip to break, thereby resulting in unsmooth ink output and making the gel pen unable to be used normally.

[0007] To achieve the above object, the present utility model provides the following technical solution: a double-ball pen tip for a syringe, including a first syringe tip, the lower end of the first syringe tip is fixedly connected to a second syringe tip, a card slot is opened at the lower end of the second syringe tip, and a second ball is rotatably connected inside the card slot. A support mechanism is arranged inside the first syringe tip and the second syringe tip. The support mechanism includes three groups of first abutting rings, a buffer pad, three groups of second abutting rings, an ink guiding core, two groups of first support springs, a second support spring and a third abutting ring. The ink guiding core is slidably connected to the inner side of the second abutting ring.

[0008] By adopting the above technical solution, the ink guiding core is passed through three groups of second abutting rings, and the three groups of second abutting rings and the three groups of first abutting rings support the side surface of the ink guiding core, improving the stability of the ink guiding core.

[0009] Optionally, a first ink guiding hole is opened inside the first syringe tip, a second ink guiding hole is opened inside the second syringe tip, and the first ink guiding hole communicates with the second ink guiding hole.

[0010] Optionally, a first ball is rotatably connected to the bottom of the second ink guiding hole, the first ball abuts tightly against the second ball, and the lower end of the ink guiding core abuts tightly against the surface of the first ball.

[0011] By adopting the above technical solution, the ink guiding core guides the ink to the surface of the first ball, and the first ball guides the ink to the surface of the second ball for writing.

[0012] Optionally, one end of the outer side of the buffer pad is fixedly connected to the inner surface of the first abutting ring, and one end of the inner side of the buffer pad is fixedly connected to the outer surface of the second abutting ring.

[0013] Optionally, two groups of first support springs are arranged inside the first ink guiding hole, and the upper and lower ends of the two groups of first support springs are respectively fixedly connected to the surfaces of the upper and lower two groups of first abutting rings.

[0014] Optionally, the second support spring is arranged inside the second ink guiding hole, the upper end of the second support spring is fixedly connected to the surface of the lowermost second abutting ring, the lower end of the second support spring is fixedly connected to the surface of the third abutting ring, and the lower end of the third abutting ring abuts tightly against the surface of the first ball.

[0015] By adopting the above technical solution, the two groups of first support springs and the second support spring support the first ball.

[0016] Optionally, two groups of abutting grooves are opened at a position near the upper side inside the first ink guiding hole, an L-shaped elastic piece is inserted inside the abutting groove, and the upper end of the elastic piece is fixedly connected to the side wall of the first ink guiding hole.

[0017] Optionally, a contact plate is fixedly connected to the upper end of the ink guiding core. The upper surface of the contact plate abuts tightly against the lower end of the elastic sheet, and the lower surface of the contact plate abuts tightly against the upper surface of the upper first contact ring.

[0018] By adopting the above technical solution, the elastic sheet presses the upper surface of the contact plate, and the contact plate presses the surface of the upper first contact ring, thereby fixing the three groups of first contact rings, two groups of first support springs, the second spring and the third contact ring inside the first ink guiding hole and the second ink guiding hole.

[0019] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0020] 1. The present utility model fixes the upper end of the ink guiding core through the contact plate, and passes the ink guiding core through three groups of second contact rings. The three groups of second contact rings and the three groups of first contact rings support the side surface of the ink guiding core, thereby improving the stability of the ink guiding core and increasing the use safety of the ink guiding core. It solves the problem that the neutral pen is prone to dropping during use, and the side surface of the ink guiding core lacks a support structure. When the neutral pen drops, the ink guiding core inside the pen tip is prone to breakage, resulting in unsmooth ink output and the neutral pen being unable to be used normally;

[0021] 2. The present utility model supports the upper end of the contact plate by using the elastic sheet. During installation, the contact plate and the first contact ring are slid downward inside the first ink guiding hole, and the elastic sheet is squeezed into the contact groove. When the contact plate moves to the lower end of the elastic sheet, the elastic sheet automatically pops outwards to support the upper end of the contact plate, thereby facilitating the fixing of the support mechanism inside the first ink guiding hole and the second ink guiding hole. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present utility model;

[0023] Figure 2 is the internal structural schematic diagram of the present utility model;

[0024] Figure 3 is the structural schematic diagram of the ink guiding core of the present utility model;

[0025] Figure 4 is the structural schematic diagram of the first needle tube head of the present utility model;

[0026] Figure 5 is the structural schematic diagram of the support mechanism of the present utility model.

[0027] Description of the Reference Numerals:

[0028] 1. First syringe tip; 11. Second syringe tip; 12. First ink guiding hole; 13. Second ink guiding hole; 14. Card slot; 15. Abutting groove; 16. Elastic sheet; 17. First ball; 18. Second ball; 2. First abutting ring; 21. Buffer pad; 22. Second abutting ring; 23. Ink guiding core; 24. First support spring; 25. Second support spring; 26. Third abutting ring; 27. Abutting plate. Detailed implementation mode

[0029] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0030] The present utility model provides a double-ball pen tip for a syringe as shown in Figure 1 and Figure 2 which includes a first syringe tip 1. A second syringe tip 11 is fixedly connected to the lower end of the first syringe tip 1. A card slot 14 is opened at the lower end of the second syringe tip 11. A second ball 18 is rotatably connected inside the card slot 14. A support mechanism is arranged inside the first syringe tip 1 and the second syringe tip 11. The support mechanism includes three groups of first abutting rings 2, buffer pads 21, three groups of second abutting rings 22, an ink guiding core 23, two groups of first support springs 24, a second support spring 25 and a third abutting ring 26. A first ink guiding hole 12 is opened inside the first syringe tip 1. A second ink guiding hole 13 is opened inside the second syringe tip 11. The first ink guiding hole 12 communicates with the second ink guiding hole 13. A first ball 17 is rotatably connected to the bottom of the second ink guiding hole 13. The first ball 17 tightly abuts against the second ball 18. The lower end of the ink guiding core 23 tightly abuts against the surface of the first ball 17. The ink guiding core 23 is slidably connected to the inner side of the second abutting ring 22. One end of the outer side of the buffer pad 21 is fixedly connected to the inner surface of the first abutting ring 2. One end of the inner side of the buffer pad 21 is fixedly connected to the outer surface of the second abutting ring 22.

[0031] Among them, the first ball 17 is sent into the lower end of the second ink guiding hole 13, and then the support mechanism is sent into the first ink guiding hole 12 and the second ink guiding hole 13. Then the ink guiding core 23 is sequentially passed through the three groups of second abutting rings 22 and the third abutting ring 26, and its lower end tightly abuts against the surface of the first ball 17. At this time, the three groups of first abutting rings 2, the three groups of second abutting rings 22 and the buffer pads 21 support the ink guiding core 23, improving the stability of the ink guiding core 23 and further increasing the structural strength of the ink guiding core 23.

[0032] Refer to Figures 3 to 5, two groups of first support springs 24 are arranged inside the first ink guiding hole 12. The upper and lower ends of the two groups of first support springs 24 are fixedly connected to the surfaces of the upper and lower groups of first abutting rings 2 respectively. The second support spring 25 is arranged inside the second ink guiding hole 13. The upper end of the second support spring 25 is fixedly connected to the surface of the lowermost second abutting ring 22, and the lower end of the second support spring 25 is fixedly connected to the surface of the third abutting ring 26. The lower end of the third abutting ring 26 tightly abuts against the surface of the first ball 17. Two abutting grooves 15 are formed at a position near the upper side inside the first ink guiding hole 12. An L-shaped elastic piece 16 is inserted into the abutting groove 15. The upper end of the elastic piece 16 is fixedly connected to the side wall of the first ink guiding hole 12. The upper end of the ink guiding core 23 is fixedly connected with an abutting plate 27. The upper surface of the abutting plate 27 tightly abuts against the lower end of the elastic piece 16, and the lower surface of the abutting plate 27 tightly abuts against the upper surface of the upper first abutting ring 2.

[0033] Specifically, the third abutting ring 26, the second support spring 25, the three groups of first abutting rings 2, the three groups of second abutting rings 22 and the two groups of first support springs 24 are sequentially placed inside the second ink guiding hole 13 and the first ink guiding hole 12. When the first abutting ring 2 passes through the elastic piece 16, the elastic piece 16 will be squeezed. When the first abutting ring 2 reaches the lower end of the elastic piece 16, the elastic piece 16 automatically pops out to position the first abutting ring 2. After the support mechanism is fixed, the ink guiding core 23 and the abutting plate 27 are sent into the first ink guiding hole 12 and the second ink guiding hole 13, and the ink guiding core 23 is passed through the three groups of second abutting rings 22 and the third abutting ring 26, and the abutting plate 27 is stuck at the lower end of the elastic piece 16 to fix the abutting plate 27, thereby fixing the ink guiding core 23 inside the first ink guiding hole 12 and the second ink guiding hole 13. At this time, the support mechanism supports the ink guiding core 23.

[0034] In addition, during use, the ink inside the ink tube is introduced onto the surface of the first ball 17 through the ink guiding core 23. As the first ball 17 and the second ball 18 rotate, the first ball 17 introduces the ink onto the surface of the second ball 18, thereby enabling writing.

[0035] The working principle of the present utility model: In order to improve the structural strength of the ink guiding core 23 and increase the use safety of the ink guiding core 23, a support mechanism is installed inside the first ink guiding hole 12 and the second ink guiding hole 13, and the ink guiding core 23 is passed through the inside of the support mechanism. The side of the ink guiding core 23 is supported by the support mechanism to prevent the ink guiding core 23 from breaking and improve the use safety of the ink guiding core 23.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A needle-tube double-ballpoint pen head, comprising a first needle-tube head (1), characterized in that: The lower end of the first needle tube head (1) is fixedly connected to the second needle tube head (11); the lower end of the second needle tube head (11) is provided with a slot (14); a second ball (18) is rotatably connected inside the slot (14); a support mechanism is provided inside the first needle tube head (1) and the second needle tube head (11); the support mechanism comprises three groups of first abutment rings (2), buffer pads (21), three groups of second abutment rings (22), an ink introduction core (23), two groups of first support springs (24), a second support spring (25) and a third abutment ring (26); the ink introduction core (23) is slidably connected to the inner side of the second abutment ring (22).

2. A needle-tube double-ballpoint pen tip according to claim 1, characterized in that: A first ink introduction hole (12) is provided inside the first needle tube head (1), a second ink introduction hole (13) is provided inside the second needle tube head (11), and the first ink introduction hole (12) and the second ink introduction hole (13) are connected.

3. A needle-tube double-ballpoint pen tip according to claim 2, characterized in that: The bottom of the second ink introduction hole (13) is rotatably connected to a first rolling ball (17), the first rolling ball (17) and the second rolling ball (18) are tightly abutted, and the lower end of the ink introduction core (23) is tightly abutted against the surface of the first rolling ball (17).

4. The needle-tube double-ballpoint pen tip according to claim 1, characterized in that: An outer end of the buffer pad (21) is fixedly connected to the inner surface of the first abutment ring (2), and an inner end of the buffer pad (21) is fixedly connected to the outer surface of the second abutment ring (22).

5. The needle-tube double-ballpoint pen tip according to claim 3, characterized in that: The two groups of the first support springs (24) are arranged inside the first ink introduction hole (12), and the upper and lower ends of the two groups of the first support springs (24) are fixedly connected to the surfaces of the upper and lower groups of the first abutment rings (2) respectively.

6. The needle-tube double-ballpoint pen tip according to claim 5, characterized in that: The second support spring (25) is arranged inside the second ink inlet hole (13), the upper end of the second support spring (25) is fixedly connected to the surface of the lowermost second abutment ring (22), the lower end of the second support spring (25) is fixedly connected to the surface of the third abutment ring (26), and the lower end of the third abutment ring (26) is tightly abutted against the surface of the first ball (17).

7. The needle-tube double-ballpoint pen tip according to claim 2, characterized in that: Two groups of abutment grooves (15) are provided inside the first ink introduction hole (12) near the upper side, an L-shaped elastic sheet (16) is inserted into the abutment groove (15), and the upper end of the elastic sheet (16) is fixedly connected to the side wall of the first ink introduction hole (12).

8. The needle-tube double-ballpoint pen tip according to claim 7, characterized in that: The upper end of the ink introducing core (23) is fixedly connected to a contact plate (27), the upper surface of the contact plate (27) is tightly abutted against the lower end of the elastic sheet (16), and the lower surface of the contact plate (27) is tightly abutted against the upper surface of the upper first contact ring (2).

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