Water storage device of soft-head drawing pen
By introducing a limiting step, a contact flange, and a limiting post into the ink reservoir of the soft-tip drawing pen, the problem of contact failure caused by the movement of the ink core is solved, achieving structural stability and extended service life, while maintaining smooth ink flow.
Patent Information
- Application Number
- CN202423018414.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The water guide core of the existing straight liquid soft-tip painting pen is prone to collision with the ball due to movement, resulting in contact failure and shortening the service life.
The design employs a combination of limiting steps and abutting flanges, with limiting posts arranged circumferentially along the ink flow channel to restrict the sliding of the ink core and abut the ball bearings through the limiting posts to prevent collisions while maintaining ink flow.
It effectively avoids damage to the ink core, extends service life, improves structural reliability, ensures smooth ink flow, and simplifies production and processing.
Smart Images
Figure CN223456706U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of water reservoirs of soft head drawing pen. BACKGROUND
[0002] The head of straight liquid type soft head drawing pen is made of plastic, fiber and other high molecular materials. The head of straight liquid type soft head drawing pen has elasticity. When writing, the head rubs with paper to produce vibration, thereby bringing out ink from the internal conduit. The written line is very smooth, and it is mostly used for drawing and sketching. However, the existing drawing pen structure usually includes a head assembly, an ink cartridge assembly and a water guide core. The head assembly is connected to one end of the ink cartridge assembly. The ink cartridge assembly includes an ink cartridge and a water reservoir. The water reservoir is fixed in the ink cartridge. A first ink flow channel is formed in the water reservoir. A second ink flow channel is provided in the head assembly. One end of the water guide core extends into the second ink flow channel, and the other end of the water guide core extends into the ink cartridge through the first ink flow channel. At the same time, the existing structure is provided with a ball between the water reservoir and the ink cartridge to facilitate ink guidance. However, when in use, the water guide core may collide with the ball due to its movement, which may cause the end of the water guide core to lose contact and affect the service life of the structure. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides a water reservoir for a soft head drawing pen, which has a simple structure, reduces the movement of the water guide core, avoids collision with the ball, prolongs the service life of the structure and has good use effect.
[0004] To achieve the above-mentioned purpose, the utility model provides a water reservoir for a soft head drawing pen, which includes a shell. One end of the shell is an assembly end for connecting with a head, and the other end is a connecting end for connecting with an ink cartridge. An ink flow channel is provided in the shell. A water guide core is provided in the ink flow channel. A limiting step is provided on the inner wall of the shell. A contact flange is provided on the outer wall of the water guide core. The contact flange and the limiting step form a limit for the water guide core to move out of the connecting end. A limiting column is provided on the shell at the connecting end. The limiting column is arranged circumferentially along the ink flow channel.
[0005] The beneficial effects of such arrangement are as follows: through the cooperation of the limiting step and the contact flange, the movement of the water guide core in the shell can be effectively limited to avoid collision with the ball and cause damage and deformation of the water guide core. At the same time, through the limiting column, the ball can be contacted to avoid the ball from approaching and touching the water guide core, effectively avoiding contact between the two. At the same time, the limiting column structure will not affect the flow of ink close to the water guide core, ensuring the use effect of the structure, prolonging the service life of the structure and having good reliability.
[0006] As a further setting of the utility model, the ink flow channel includes a channel main body, a step portion and a connecting portion, the step portion is provided with a shell connecting end, a limiting step is arranged on the step portion, the channel main body is connected with the step portion through the connecting portion, and the connecting portion is gradually contracted from the channel main body to the step portion.
[0007] The beneficial effect of the arrangement is that the arrangement further avoids the water guide core from moving, and the gradually contracted connecting portion is matched with the water guide core gap, which is beneficial to the siphon effect, facilitates ink absorption and storage, and has good use effect.
[0008] As a further setting of the utility model, the water guide core is provided with a resisting flange at both ends.
[0009] The beneficial effect of the arrangement is that the arrangement can be assembled without distinguishing the head and tail of the water guide core, improves production and processing efficiency, is convenient for processing, and has good use effect.
[0010] As a further setting of the utility model, the limiting column is arranged to be smaller than the water guide core.
[0011] The beneficial effect of the arrangement is that the arrangement facilitates water absorption of the water guide core, and has simple structure, is convenient for processing, and has good use effect.
[0012] As a further setting of the utility model, the limiting column is arranged to be two and symmetrically distributed along the central axis of the shell.
[0013] The beneficial effect of the arrangement is that the arrangement guarantees the resisting effect on the ball, avoids the ball from deviating and being stuck, guarantees the use stability of the structure, has simple structure, and has good use effect.
[0014] As a further setting of the utility model, the limiting column inner circumference arc is matched with the ink flow channel inner diameter arc.
[0015] The beneficial effect of the arrangement is that the arrangement has stronger overall structure integrity, so that the water guide core does not collide with the edge when moving, avoids damage of the water guide core, has simple structure, is convenient for processing, and has good use effect. BRIEF DESCRIPTION OF DRAWINGS
[0016] Fig. 1 It is a structure schematic view of the utility model embodiment;
[0017] Fig. 2 It is a sectional structure schematic view of the utility model embodiment;
[0018] Fig. 3 It is a structure schematic view of the water guide core in the utility model embodiment;
[0019] Fig. 4 It is a cross section structure schematic view of the shell in the embodiment of the utility model. DETAILED DESCRIPTION
[0020] The utility model provides a kind of water reservoir of soft head drawing pen, as shown in Figs. 1 to 4 The shell 1 is provided with a flow ink channel 14, and the flow ink channel 14 is provided with a water guide core 2. The inner wall of the shell 1 is provided with a limiting step, and the outer wall of the water guide core 2 is provided with a contact flange 21. The contact flange 21 is in contact with the limiting step to form a limiting position for the water guide core 2 to move out of the connecting end. A limiting column 3 is arranged on the shell 1 at the connecting end. The limiting column 3 is arranged circumferentially along the flow ink channel 14. This arrangement has the beneficial effect that the water guide core 2 can be effectively limited from sliding in the shell 1 by the cooperation of the limiting step and the contact flange 21, avoiding collision with the ball bearings and causing damage and deformation of the water guide core 2. At the same time, the limiting column 3 can contact the ball bearings, avoiding the ball bearings from approaching and touching the water guide core 2, effectively avoiding contact between the two. The structure of the limiting column 3 does not affect the flow of ink near the water guide core 2, ensuring the use effect of the structure and prolonging the service life of the structure, with good reliability.
[0021] As a further arrangement of the embodiment, the flow ink channel 14 includes a channel body 11, a step portion 13, and a connecting portion 12. The step portion 13 is arranged corresponding to the connecting end of the shell 1. The limiting step is arranged on the step portion 13. The channel body 11 is connected to the step portion 13 through the connecting portion 12. The connecting portion 12 is gradually contracted from the channel body 11 to the step portion 13. This arrangement has the beneficial effect that it further avoids the water guide core 2 from moving around. At the same time, due to the gradual contraction of the connecting portion 12, the position is gap-fitted with the water guide core 2, which is beneficial for the occurrence of siphon effect and facilitates the absorption and storage of ink, with good use effect.
[0022] As a further arrangement of the embodiment, the water guide core 2 is provided with a contact flange 21 at both ends. This arrangement has the beneficial effect that it does not need to distinguish between the head and tail of the water guide core 2 for assembly, improving production and processing efficiency, facilitating processing, and having good use effect.
[0023] As a further arrangement of the embodiment, the width of the limiting column 3 is smaller than that of the water guide core 2. This arrangement has the beneficial effect that it facilitates the water absorption of the water guide core 2, and the structure is simple and easy to process, with good use effect.
[0024] As a further arrangement of the present embodiment, the limiting column 3 is provided in two and is symmetrically distributed along the axis of the shell 1. The beneficial effect of such an arrangement is that such an arrangement ensures the resistance effect on the ball, avoids the ball from deviating and being stuck, ensures the stability of the structure in use, and has a simple structure and good use effect.
[0025] As a further arrangement of the present embodiment, the inner circumferential curvature of the limiting column 3 is matched with the inner diameter curvature of the ink flow channel 14. The beneficial effect of such an arrangement is that such an arrangement has stronger overall structural integrity, so that the water guide core 2 does not collide with the edge when it moves, avoids damage to the water guide core 2, has a simple structure, is easy to process, and has good use effect.
[0026] The above examples are only one of the preferred specific examples of the present application, and the usual changes and replacements made by those skilled in the art within the scope of the technical scheme of the present application are all included in the protection scope of the present application.
Claims
1. A water reservoir for a soft tip drawing pen, comprising a housing, one end of the housing being a fitting end for connecting with a pen tip, the other end being a connecting end for connecting with an ink cartridge, a flow ink channel being provided through the housing, a water guide core being provided through the flow ink channel, characterized in that: The housing inner wall is provided with a limiting step, the water guide core outer wall is provided with a resisting flange, the resisting flange and the limiting step resist to form the limiting of the water guide core outwardly extruding from the connecting end, the housing is provided with a limiting column on the connecting end, and the limiting column is arranged circumferentially along the ink flow channel.
2. A water reservoir for soft tipped drawing pens according to claim 1 characterised in that: The ink flow channel comprises a channel main body, a step part and a connecting part, the step part is correspondingly provided with the housing connecting end, the limiting step is arranged on the step part, the channel main body is connected with the step part through the connecting part, and the connecting part is gradually contracted from the channel main body to the step part.
3. The water reservoir for soft tipped drawing pens of claim 1, wherein: The water guide core is respectively provided with a resisting flange at two ends.
4. The water reservoir for soft tipped drawing pens of claim 1, wherein: The limiting column is provided with a width smaller than the water guide core.
5. A water reservoir for a soft tipped drawing pen according to claim 4, characterised in that: The limiting column is provided with two and is symmetrically distributed along the housing central axis.
6. The water reservoir for soft tipped drawing pens of claim 4, wherein: The limiting column inner peripheral curvature is matched with the ink flow channel inner diameter curvature.