Pressing pen with damping mechanism
By setting an annular damping component on the refill support base of the push-type pen, the jitter and noise problems caused by the fast rebound speed of the refill is solved, and the uniformity of ink distribution and the service life of the refill are improved.
Patent Information
- Application Number
- CN202421095839.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing push-type pens are faster when the refill resurge, resulting in shaking and noise. The refill residing easily leads to skew and uneven distribution of ink, resulting in ink leakage and ink breakage.
A push-type pen tool with a damping mechanism is designed. By providing an annular damping member on the refill support base and forming a sliding contact with the inner hole wall of the pen shaft, it brings a damping effect and slows down the rebound speed of the refill. .
It effectively reduces the speed and noise of the refill when the refill rebounds, reduces the problems of jitter and uneven ink distribution, extends the service life of the refill, and reduces the possibility of ink leakage and ink breakage.
Smart Images
Figure CN222451781U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a push-type writing tool with a damping mechanism. Background Art
[0002] In the prior art, a push-type writing instrument, such as an automatic ballpoint pen, which uses a pressing method to achieve the extension and retraction of the pen core, generally includes a pen barrel, a pen core, a spring, a button, a telescopic locking mechanism and other components. The pen core, the spring, and the telescopic locking mechanism are built into the inner side of the pen barrel, the spring is abutted between the front end of the pen core and the pen barrel, the telescopic locking mechanism is abutted between the front end of the button and the rear end of the pen core, a core outlet hole is provided at the front end of the pen core, the telescopic locking mechanism includes a push rod, a rotating disk, and a slide groove provided on the inner side of the pen barrel, wherein the rear end of the push rod and the front end of the button are abutted and matched, the rotating disk is provided at the rear end of the pen core and is pushed and matched with the front end of the push rod, the rotating disk can form an axial limit fit or release through rotation and the slide groove, and the pen core includes A straight-cylindrical ink tube, a metal head, and a support seat connected between the ink tube and the head. A spring is set and sleeved on the support seat, and its two ends are respectively in contact with the annular step surface of the support seat and the step surface of the front part of the inner hole of the pen holder. When the button is pressed, the push rod is driven to move forward along the slide groove. When the meshing part of the rotating disk and the slide groove is disengaged, the force generated by the contact between the pointed feature of the front end of the push rod and the inclined surface of the rotating disk causes the rotating disk to rotate. The pen core is kept in the extended position through the limit cooperation between the rotating disk and the front part of the slide groove. When the button is pressed again, the rotating disk is caused to rotate again, and the limit cooperation between the rotating disk and the front part of the slide groove is released. The spring drives the rotating disk to move backward along the slide groove, so that the pen core can be retracted into the pen holder. Therefore, the front end of the driving pen core can be switched to extend forward or retract backward from the core outlet hole by pressing and releasing the button.
[0003] Since the elastic force of the spring is usually large, the pen core has a fast movement speed during the backward movement, and then suddenly stops, the pen core will have a certain impact, which is easy to cause the ink in the ink tube of the pen core to rise slightly, making the ink unevenly distributed. After long-term use, the pen may be cut off or leak when writing, especially for some users who like to press frequently. In addition, this also causes the pen core to easily produce a "clicking" sound when pressing, which has a large noise.
[0004] In addition, in existing push-type pens, the spring used to cooperate with the telescopic locking mechanism to realize the telescopic movement of the pen core is usually pre-tightened and arranged between the step surface of the front end support seat of the pen core and the step surface of the front end of the inner hole of the pen barrel. Since the rear end of the pen core is usually fixed, the front end of the pen core is floating, and there are large gaps between the spring and the support seat as well as between the spring and the inner hole wall of the pen barrel, the front end of the pen core is prone to deflection when extending, and the spring is prone to lateral deformation when compressed by the pen core. Noise and shaking will be generated when the spring is squeezed. Summary of the invention
[0005] The utility model provides a push-type pen with a damping mechanism, which can reduce the speed of the pen core when it rebounds backward, thereby reducing the shaking and noise during the telescopic operation of the pen.
[0006] The utility model provides a push-type writing tool with a damping mechanism, comprising a pen barrel, a pen core arranged in the pen barrel along the axial direction of the pen barrel, and also comprising a telescopic locking mechanism, a spring, and an operating component for linking the pen core to realize telescopic movement. A damping mechanism is arranged between the pen core and the inner hole wall of the pen barrel, and the damping mechanism comprises a pen core support seat arranged in the pen barrel and capable of moving along the axial direction of the pen barrel, and an annular damping component positioned on the outer peripheral surface of the pen core support seat. The pen core support seat is arranged between the rear end of the pen core and the front end of the telescopic locking mechanism, and the annular damping component forms a sliding contact fit with the inner hole wall of the pen barrel.
[0007] The sliding contact between the annular damping component and the inner hole wall of the pen barrel can provide damping for the axial movement of the pen core support seat along the pen barrel, which can slow down the movement speed of the pen core support seat, and thus also slow down the movement speed of the pen core, especially when the pen core is driven by the spring to realize the rebound movement, which can significantly reduce the impact on the pen core, increase the service life of the pen core, reduce the possibility of ink leakage and ink breakage after long-term use of the pen, and also reduce the noise during the extension and retraction operation of the pen core. In addition, the annular damping component is set on the pen core support seat, and there is no need to modify the existing pen core structure, and it can be adapted to the pen core of conventional structure, which is more conducive to the replacement and use of the pen core.
[0008] Furthermore, there are at least two annular damping components, which are evenly distributed axially on the outer peripheral surface of the refill support seat. The provision of at least two annular damping components can reduce the requirements for tolerance matching accuracy during processing, improve the stability of the damping mechanism during movement, and improve the contact effect with the inner hole wall of the pen shaft.
[0009] Furthermore, an annular positioning groove for the annular damping component to be embedded and positioned is provided on the outer peripheral surface of the refill support seat. The structure is simple and convenient for production, processing and assembly, so that the annular damping component is not easy to move when subjected to force and is not easy to fall off the refill support seat.
[0010] Furthermore, there are at least two annular positioning grooves, which are evenly distributed along the axial direction on the outer peripheral surface of the pen core support seat.
[0011] For pen manufacturers, when producing different styles of snap-action pens, different styles of pens have different requirements for the damping effect of the damping mechanism due to structural differences. Manufacturers can choose an appropriate number of annular damping components according to needs and embed them into different annular positioning grooves of the refill support seat, which can reduce the requirements for tolerance matching between components, so that the damping mechanism of the same specification can be adapted and installed in different styles of snap-action pens for use, which can reduce the production cost of the manufacturer.
[0012] For the users of pens, the damping effect of the pen core support seat can be adjusted by changing the number and position of the annular damping components embedded in the annular positioning groove, thereby improving the user experience of the push-type pen.
[0013] Furthermore, the cross-section of the annular damping component along its circumference is circular, which facilitates the assembly of the annular damping component. The annular damping component is made of silicone or rubber material. Silicone or rubber material has a certain elasticity, can reduce the requirements for tolerance matching, and has good contact friction.
[0014] Furthermore, the front end of the refill support seat and the rear end of the refill are positioned and matched, a first annular step surface is provided at the rear of the inner hole of the pen shaft, the spring sleeve is arranged on the outside of the refill ink tube, and the two ends of the spring are respectively abutted and matched with the first annular step surface and the front end of the refill support seat.
[0015] Since conventional refill ink tubes are all straight-cylindrical structures, the spring is arranged at the rear of the pen shaft and sleeved on the outside of the refill ink tube. The gap between the spring and the refill ink tube is relatively small and relatively uniform. In addition, since the rear end of the refill is the supporting end, it is not easy to shake relative to the front end of the refill. The spring is arranged between the first annular step surface of the pen shaft and the front end of the refill support seat. The spring is more stably stressed during compression deformation, is not easy to produce lateral deformation, and is not easy to produce noise and shaking when squeezed. In addition, there is no need to modify the existing refill structure, and it can be adapted to refills of conventional structure, which is more conducive to the replacement and use of refills.
[0016] Furthermore, an annular groove is provided on the front end and / or the first annular step surface of the refill support seat, and the end of the spring is embedded in the annular groove for positioning, thereby improving the abutment and matching effect with the end of the spring, making it difficult for the spring to move laterally.
[0017] Furthermore, a slot is provided at the front end of the refill support seat, and the rear end of the refill is inserted and fixed in the slot, so as to achieve positioning and matching between the front end of the refill support seat and the rear end of the refill.
[0018] Furthermore, a spring sleeve made of plastic material is arranged between the front end of the pen core and the pen barrel, and the spring sleeve is arranged between the inner hole wall of the pen barrel and the side of the front end of the pen core, a second annular step surface is arranged at the front end of the pen core, and a third annular step surface is arranged at the front part of the inner hole of the pen barrel, and the axial ends of the spring sleeve are respectively abutted and limited with the second annular step surface and the third annular step surface. The arrangement of the spring sleeve can keep the front end of the pen core in a centered position, so that the front end of the pen core is not easy to deflect during the telescopic movement, and the spring sleeve will be compressed and deformed when the pen core is extended, and the spring sleeve will recover its deformation when the pen core is retracted. Since the gap between the spring sleeve and the pen core and between the spring sleeve and the inner hole wall of the pen barrel is small, the spring sleeve is not easy to produce lateral deformation during the compression process. The arrangement of the spring sleeve can protect the pen core. In addition, the plastic material is more conducive to the production and processing of the spring sleeve, and no large noise will be generated even when it is squeezed and rubbed with the inner hole wall of the pen barrel during the compression process.
[0019] Furthermore, a conical wall is provided adjacent to the third annular step surface at the front of the inner hole of the pen shaft, and a conical mating surface contacting and mating with the conical hole wall is provided at the front end of the spring sleeve. The spring sleeve can be kept in a centered state through the guiding mating of the conical hole wall at the front of the inner hole of the pen shaft and the conical mating surface at the front end of the spring sleeve, so that the front end of the pen core is more stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a structural diagram of an embodiment of the utility model;
[0021] Figure 2 It is an exploded view of an embodiment of the utility model;
[0022] Figure 3 A cross-sectional view of an embodiment of the utility model;
[0023] Figure 4 for Figure 3 A magnified view of part A;
[0024] Figure 5 This is a structural diagram of the damping mechanism of an embodiment of the utility model;
[0025] Figure 6 An exploded view of the damping mechanism of an embodiment of the utility model;
[0026] Figure 7 A cross-sectional view of another embodiment of the utility model;
[0027] Figure 8 for Figure 7 A magnified view of part B;
[0028] Fig. 9 This is a structural diagram of a spring sleeve according to an embodiment of the utility model. DETAILED DESCRIPTION
[0029] The implementation of the push-type writing tool with a damping mechanism of the utility model is as follows: Figure 1-6 As shown: it includes a pen barrel 1, a refill 2 movably arranged in the pen barrel 1 along the axial direction of the pen barrel 1, and also includes a telescopic locking mechanism 3, a spring 4, and an operating component 5 that are linked to the refill 2 to achieve telescopic movement, wherein the operating component 5 is movably arranged at the rear end of the pen barrel 1 and can be pressed by a hand, and the telescopic locking mechanism 3 acts between the rear end of the refill 2 and the operating component 5. By alternately pressing the operating component 5 and linking the telescopic locking mechanism 3, the refill 2 can be driven to move forward and keep it in an extended state, or the refill 2 can be driven to reset backward and keep it in a retracted state by using the spring 4. The telescopic locking mechanism 3 is relatively common in existing push-type writing tools such as automatic ballpoint pens, and its specific structure and principle are not repeated here. A damping mechanism is arranged between the refill 2 and the inner hole wall of the pen barrel 1, and the damping mechanism includes a spring 4 that is arranged in the pen barrel 1 and can move axially along the pen barrel 1. A refill support seat 6 and an annular damping component 7 positioned and mounted on the outer circumference of the refill support seat 6. The refill support seat 6 is arranged between the rear end of the refill 2 and the front end of the telescopic locking mechanism 3. The annular damping component 7 forms a sliding contact fit with the inner hole wall of the pen body 1. The friction resistance between the annular damping component 7 and the pen body 1 is increased by the roughness of the contact surface between the annular damping component 7 and the inner hole wall of the pen body 1 or the pressure during contact, so as to provide damping for the axial movement of the refill support seat 6 along the pen body 1, and can slow down the movement speed of the refill support seat 6, and thus can also slow down the movement speed of the refill 2, especially can significantly reduce the impact of the refill 2 when the refill 2 is driven by the spring 4 to realize the rebound movement, improve the service life of the refill 2, reduce the possibility of ink leakage and ink breakage after long-term use of the pen, and can also reduce the noise during the telescopic operation of the refill 2. In addition, the annular damping component 7 is arranged on the refill support seat 6, and there is no need to modify the existing refill 2 structure, and it can be adapted to the refill of conventional structure, which is more conducive to the replacement and use of the refill.
[0030] In this embodiment, if Figures 4 to 6 As shown, there are two annular damping components 7, which are evenly distributed along the axial direction on the outer peripheral surface of the refill support seat 6. The arrangement of the two annular damping components 7 can reduce the requirements for tolerance matching accuracy during processing, improve the stability of the damping mechanism during movement, make the damping mechanism less likely to shake, and improve the contact effect with the inner hole wall of the pen shaft 1. In other embodiments, there can also be one or more annular damping components 7.
[0031] An annular positioning groove 61 for the annular damping component 7 to be embedded and positioned is provided on the outer peripheral surface of the refill support seat 6. The annular damping component 7 is positioned and installed on the refill support seat 6 through the annular positioning groove 61. The structure is simple, and production, processing and assembly are convenient, so that the annular damping component 7 is not easy to move when subjected to force, and is not easy to fall off from the refill support seat 6.
[0032] In this embodiment, there are three annular positioning grooves 61 , which are evenly distributed along the axial direction on the outer peripheral surface of the refill support seat 6 , and two annular damping components 7 are embedded and positioned in two of the annular positioning grooves 61 .
[0033] For pen manufacturers, when producing different styles of push-type pens, different styles of pens have different requirements for the damping effect of the damping mechanism due to structural differences. Manufacturers can select an appropriate number of annular damping components 7 according to needs and embed them into different annular positioning grooves 61 of the refill support seat 6 accordingly, which can reduce the requirements for tolerance matching between components, so that the damping mechanism of the same specification can be adapted and installed in different styles of push-type pens for use, which can reduce the production cost of the manufacturer.
[0034] For the users of the pens, the damping effect of the refill support 6 can be adjusted by changing the number and position of the annular damping components 7 embedded in the annular positioning groove 61, thereby improving the user experience of the push-type pens.
[0035] In other embodiments, one or more annular positioning grooves 61 may also be provided on the refill support seat 6 .
[0036] In this embodiment, the cross-section of the annular damping component 7 along its circumference is circular, which can prevent the damping effect of the annular damping component 7 from being affected by deflection and distortion during assembly, and can facilitate assembly of the annular damping component 7.
[0037] The annular damping component 7 is made of silicone or rubber. Silicone or rubber has a certain elasticity, can reduce the requirements for tolerance matching, and has good contact friction.
[0038] The front end of the refill support seat 6 and the rear end of the refill 2 are positioned and matched. Specifically, a slot 62 is provided at the front end of the refill support seat 6, and the rear end of the refill 2 is inserted and fixed in the slot 62. A clamping structure composed of a plurality of convex ribs 63 is provided in the slot 62, so that the refill support seat 6 can also drive the refill 2 to move backward while moving backward. A first annular step surface 11 is provided at the rear of the inner hole of the pen shaft 1, and the spring 4 is sleeved on the outside of the ink tube of the refill 2. The two ends of the spring 4 are respectively abutted and matched with the first annular step surface 11 and the front end of the refill support seat 6, as shown in FIG. Figure 4 shown.
[0039] Since the ink tubes of conventional refills 2 are all straight-cylindrical structures, the spring 4 is arranged at the rear position of the pen shaft 1 and is sleeved on the outside of the ink tube of the refill 2. The gap between the spring 4 and the ink tube of the refill 2 is relatively small and relatively uniform. In addition, since the rear end of the refill 2 is the supporting end (coordinated with the refill support seat 6 for positioning), it is not easy to shake relative to the front end of the refill 2. The spring 4 is arranged between the first annular step surface 11 of the pen shaft 1 and the front end of the refill support seat 6. The spring 4 is more stably stressed during compression deformation, is not easy to produce lateral deformation, and is not easy to produce noise and jitter when squeezed. In addition, there is no need to modify the existing refill structure, and it can be adapted to refills of conventional structure, which is more conducive to the replacement and use of refills.
[0040] The front end of the refill support 6 is provided with an annular groove 64, and the rear end of the spring 4 is embedded in the annular groove 64 to improve the abutment and matching effect with the rear end of the spring 4. In other embodiments, an annular groove can also be provided on the first annular step surface 11, and the front end of the spring 4 is embedded in the annular groove to improve the abutment and matching effect with the rear end of the spring 4.
[0041] Another embodiment of the push-type writing tool with a damping mechanism of the utility model is a further improvement on the above embodiment. Its specific structure is as follows: Figure 7-9 As shown, including:
[0042] A spring sleeve 8 made of plastic material is arranged between the front end of the pen core 2 and the pen barrel 1. The spring sleeve 8 is cushioned between the inner hole wall of the pen barrel 1 and the side of the front end of the pen core 2. A second annular step surface 21 is arranged at the front end of the pen core 2, and a third annular step surface 12 is arranged at the front part of the inner hole of the pen barrel 1. The axial ends of the spring sleeve 8 are respectively abutted and limited with the second annular step surface 21 and the third annular step surface 12. The arrangement of the spring sleeve 8 can keep the front end of the pen core 2 in a centered position, so that the front end of the pen core 2 is not easy to deflect during the telescopic movement. When the pen core 2 is extended, the spring sleeve 8 will be compressed and deformed, and when the pen core 2 is retracted, the spring sleeve 8 will be deformed and restored accordingly. Since the gap between the spring sleeve 8 and the pen core 2 and between the spring sleeve 8 and the inner hole wall of the pen barrel 1 is small, the spring sleeve 8 is not easy to produce lateral deformation during the compression process. The arrangement of the spring sleeve can protect the pen core. In addition, the plastic material is more conducive to the production and processing of the spring sleeve 8, and no noise will be generated during the compression process.
[0043] In this embodiment, a conical wall 13 is disposed adjacent to the third annular step surface 12 at the front of the inner hole of the pen holder 1, and a conical mating surface 81 is disposed at the front end of the spring sleeve 8 to contact and fit with the conical hole wall 13. The spring sleeve 8 is not easily shaken by the guiding fit between the conical hole wall 13 at the front of the inner hole of the pen holder 1 and the conical mating surface 81 at the front end of the spring sleeve 8, so that the front end of the pen core 2 is more stable.
[0044] In this embodiment, if Fig. 9As shown, the spring sleeve 8 adopts a Z-shaped compressible foldable structure. In other embodiments, the spring sleeve 8 may also adopt a spiral structure.
[0045] It should be noted that the spring sleeve 8 only serves to support and limit the front end of the pen core 2, so that the front end of the pen core 2 is not easily deflected. Although the spring sleeve 8 also provides a backward elastic force for the pen core 2 when compressed, the elastic force is mainly used for the deformation reset of the spring sleeve 8, and the backward power of the pen core 2 relies on the spring 4.
[0046] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.
Claims
1. A push-type writing tool with a damping mechanism, comprising a pen holder, a pen core arranged in the pen holder along the axial direction of the pen holder, and a telescopic locking mechanism, a spring, and an operating component for linking the pen core to achieve telescopic movement, characterized in that: A damping mechanism is arranged between the pen core and the inner hole wall of the pen shaft, and the damping mechanism includes a pen core support seat arranged in the pen shaft and capable of moving along the axial direction of the pen shaft, and an annular damping component positioned and installed on the outer peripheral surface of the pen core support seat. The pen core support seat is arranged between the rear end of the pen core and the front end of the telescopic locking mechanism, and the annular damping component forms a sliding contact fit with the inner hole wall of the pen shaft.
2. The push-type writing tool with a damping mechanism according to claim 1, characterized in that: There are at least two annular damping components, which are evenly distributed on the outer peripheral surface of the pen core support seat along the axial direction.
3. The push-type writing tool with a damping mechanism according to claim 1, characterized in that: An annular positioning groove for the annular damping component to be embedded and positioned is arranged on the outer peripheral surface of the pen core support seat.
4. The push-type writing tool with a damping mechanism according to claim 3, characterized in that: There are at least two annular positioning grooves, which are evenly distributed on the outer peripheral surface of the pen core support seat along the axial direction.
5. The push-type writing instrument with a damping mechanism according to claim 1, characterized in that: The cross section of the annular damping component along its circumference is circular; the annular damping component is made of silica gel or rubber.
6. The push-type writing tool with a damping mechanism according to claim 1, characterized in that: The front end of the refill support seat and the rear end of the refill are positioned and matched, a first annular step surface is provided at the rear of the inner hole of the pen shaft, the spring sleeve is arranged on the outside of the refill ink tube, and the two ends of the spring are respectively abutted and matched with the first annular step surface and the front end of the refill support seat.
7. The push-type writing tool with a damping mechanism according to claim 6, characterized in that: An annular groove is arranged on the front end and / or the first annular step surface of the pen core support seat, and the end of the spring is fitted into the annular groove for positioning.
8. The push-type writing tool with a damping mechanism according to claim 6, characterized in that: The front end of the pen core support seat is provided with a slot, and the rear end of the pen core is inserted and fixed in the slot.
9. The push-type writing tool with a damping mechanism according to claim 6, characterized in that: A spring sleeve made of plastic material is arranged between the front end of the pen core and the pen shaft, and the spring sleeve is arranged between the inner hole wall of the pen shaft and the side of the front end of the pen core. A second annular step surface is arranged at the front end of the pen core, and a third annular step surface is arranged at the front part of the inner hole of the pen shaft. The axial ends of the spring sleeve are respectively abutted and limited with the second annular step surface and the third annular step surface.
10. The push-type writing tool with a damping mechanism according to claim 9, characterized in that: A conical wall is arranged adjacent to the third annular step surface at the front part of the inner hole of the pen shaft, and a conical matching surface contacting and matching with the conical hole wall is arranged at the front end of the spring sleeve.