Shifting rod type refill outlet pen
By simplifying the telescopic locking mechanism and the swing drive of the operating components, the structural complexity and wear problems of the lever-type lead-out pen are solved, thus improving the service life of the equipment.
Patent Information
- Application Number
- CN202520144548.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing lever-type lead-out pens have complex structures, require high-precision assembly processes, and the levers are prone to wear and breakage, affecting their service life.
The telescopic locking mechanism with a simple structure drives the pen refill to extend or retract by swinging the operating component, reducing dependence on the connecting shaft. It utilizes the cooperation of the connecting seat and the push rod to realize the pen refill extension or retraction action, thus reducing wear.
It simplifies the assembly process, extends the product's lifespan, reduces equipment maintenance, simplifies equipment wear, reduces wear on the lever-type core ejector, simplifies equipment performance, and extends equipment lifespan.
Smart Images
Figure CN223750528U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of core pens of lever type. BACKGROUND
[0002] In stationery market, click pen is widely used as a kind of common writing tool. At present, most of click pens on the market adopt axial pressing operation mode, that is, through the axial pressing operation component of pen, the telescopic locking mechanism arranged in the pen barrel is driven to drive the core to realize telescopic action. The operation mode is relatively monotonous, and the interestingness is weak. Some click pens on the market adopt lever type operation component. The core control of the pen can be realized by swinging the lever type operation component. The principle is similar to cam structure. The end of the operation component is pivotally connected to the pen barrel. When the operation component is driven to swing, the convex part at the end of the operation component presses against the telescopic locking mechanism of the pen, thereby realizing the telescopic control of the core.
[0003] The above-mentioned existing core pen of lever type has a relatively complex structure. In particular, the lever needs to be connected by a pin shaft. There are many parts, and the assembly process has higher requirements. At present, some manufacturers directly integrate the pin shaft into the operation component by injection molding process. However, this also causes the pin shaft to be easily worn and broken during long-time lever operation, which affects the service life of the product. SUMMARY
[0004] In order to overcome the defects of the above-mentioned prior art, the utility model provides a core pen of lever type with simple structure and convenient assembly.
[0005] The core pen of lever type of the utility model comprises a pen barrel, a core arranged in the pen barrel, a first spring, and a telescopic locking mechanism. The first spring is arranged between the pen barrel and the core and is used to drive the core to move back to the original position. The rear end of the pen barrel is swingably connected to an operation component. The telescopic locking mechanism comprises a locking member, a push rod, and a guide rail arranged on the inner side of the pen barrel. The front end of the locking member is supported by the rear end of the core. The operation component comprises a connecting seat, a connecting rod, and an operation part. The rear end of the pen barrel is provided with a cavity. The connecting seat is rotatably arranged in the cavity. The pen barrel is provided with a guide groove connecting the inside and outside of the cavity. One end of the guide groove is located at the rear end of the pen barrel, and the other end of the guide groove extends towards the side of the pen barrel. The connecting rod is arranged in the guide groove and can swing along the guide groove. One end of the connecting rod is connected to the upper end of the connecting seat, and the other end of the connecting rod is connected to the operation part. The lower end of the connecting seat is provided with a push part corresponding to one side of the guide groove. The other side of the connecting seat, which is away from the push part, is transversely extended and provided with a tongue plate. The inner side wall of the cavity is provided with a limiting groove, which can be inserted into the tongue plate and abuts against the tongue plate to limit the cooperation. The rear end of the push rod and the push part constitute a push cooperation.
[0006] It should be noted that in the above scheme, the telescopic locking mechanism belongs to the common structure in the click pen, and is limited by the guide rail, so that the locking member and the push rod can only move in the front and back directions of the pen. When the push rod pushes the locking member forward to move out of the limiting range of the guide rail, the locking member is driven to rotate a certain angle by the cooperation between the teeth of the push rod and the locking member. When the locking member moves backward under the driving of the first spring, the locking member is continuously driven to rotate a certain angle by the abutting cooperation between the locking member and the front end of the guide rail, and the locking member is abutted and limited at the axial position, thereby keeping the cartridge in the cartridge-out state. When the push rod pushes the locking member forward again, the locking member can rotate a certain angle again, and the locking member is reset backward after rotating again, so that the cartridge returns to the cartridge-in state.
[0007] When it is necessary to control the telescopic movement of the cartridge, the connecting seat in the driving chamber is rotated (i.e. swung) about the tongue plate as the fulcrum, the push rod is pushed forward by the pushing part on the connecting seat, and the cartridge-out or cartridge-in action of the cartridge is realized by cooperating with the telescopic locking mechanism. The action of the pushing part is similar to the cam structure, but compared with the traditional cam structure, the connecting seat does not need to be provided with a connecting shaft, so the structure is simpler and the assembly is more convenient. This cooperation mode can also reduce the wear between the connecting seat and the pen barrel and improve the service life of the product.
[0008] Further, the pen barrel comprises a front rod part, a rear rod part and an inner bushing, the inner bushing is inserted and fixed in the rear rod part along the front end opening of the rear rod part, the telescopic locking mechanism is arranged at the inner hole of the inner bushing, one side edge of the upper end of the inner bushing extends upward to form a convex wall, the guide groove is arranged in the rear rod part, and a convex rib is arranged on the inner side wall of the rear rod part, the limiting groove is formed by the convex rib and the convex wall, the telescopic locking mechanism can be first assembled in the inner bushing, the connecting seat can be assembled in the rear rod part, and then the inner bushing and the telescopic locking mechanism can be integrally inserted into the rear rod part, so that the assembly is convenient, and the tongue plate is placed in the limiting groove at the same time of assembly.
[0009] Further, the front end of the inner bushing is inserted and fixed in the front rod part along the rear end opening of the front rod part, so that the inner bushing can also play a role in connecting the front rod part and the rear rod part. The rear end of the inner bushing can be fixedly connected with the rear rod part, and the front end of the inner bushing can be screw-connected with the front rod part.
[0010] Further, the pushing part has an arc-shaped contact surface, the rear end of the push rod has a conical structure, the lower end of the connecting seat is provided with a recess for inserting the conical tip of the rear end of the push rod, which is beneficial to improve the movement stroke of the push rod, and the conical surface of the rear end of the push rod and the arc-shaped contact surface of the pushing part are in sliding contact, which can improve the abutting cooperation effect of the pushing part and the push rod and reduce the wear.
[0011] Further, two sides of the connecting seat corresponding to the direction of the moving axis have flat side walls, and the chamber is provided with notches at corresponding positions of the two sides, the opening edges of the notches and the side walls of the connecting seat are limitedly matched, and the notches can reduce the wear of the chamber and the side walls of the connecting seat and improve the service life.
[0012] Further, the upper end of the connecting seat has an arc-shaped surface, and the inner edges of the two sides of the guide groove have arc-shaped inner recessed walls matched with the arc-shaped surface of the upper end of the connecting seat, so that the wear of the connecting seat and the inner side of the chamber is reduced, and the rotation of the connecting seat is smoother.
[0013] Further, the operation part and the connecting rod are in plug-in positioning matching, the operation part is in the form of a doll, and the plug-in positioning matching of the operation part and the connecting rod and the penetration and connection of the connecting rod and the guide groove are facilitated, and the appearance of the pen is improved.
[0014] Further, the rear end of the locking member is provided with a convex column, the front end of the push rod and the convex column are in movable sleeving matching, a second spring is sleeved on the convex column, the second spring abuts between the locking member and the push rod, and the second spring can drive the push rod to move backward and apply force to the connecting seat, so that the design is beneficial to prevent the operation part from shaking, especially in the core extraction state. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural diagram of an embodiment of the utility model;
[0016] Figure 2 It is an exploded view of an embodiment of the utility model;
[0017] Figure 3 It is a partial sectional view of an operation part of an embodiment of the utility model in an initial state;
[0018] Figure 4 It is a partial sectional view of an embodiment of the utility model;
[0019] Figure 5 It is an assembly diagram of a locking member, a push rod and a second spring of an embodiment of the utility model;
[0020] Figure 6 It is a structural diagram of an inner sleeve of an embodiment of the utility model;
[0021] Figure 7 It is a structural diagram of a connecting seat of an embodiment of the utility model;
[0022] Figure 8 It is a partial sectional view of a pen barrel of an embodiment of the utility model in a first radial direction;
[0023] Figure 9 It is a partial sectional view of a pen barrel of an embodiment of the utility model in a second radial direction;
[0024] Figure 10 Figure 4 is a partial sectional view of the operating component of the utility model embodiment when being actuated. DETAILED DESCRIPTION
[0025] The structure of the utility model embodiment's push rod type core delivery pen is shown in Figures 1-10 The utility model embodiment provides a push rod type core delivery pen, which comprises a pen barrel (11, 12, 13), a pen core 2 arranged in the pen barrel, a first spring 31, a telescopic locking mechanism (41, 42, 43), the first spring 31 is arranged between the pen barrel and the pen core 2 and is used for driving the pen core 2 to move back to reset, the rear end of the pen barrel is swingably connected with an operating component (51, 52, 53), the telescopic locking mechanism comprises a locking piece 41, a push rod 42 and a plurality of guide rails 43 which are arranged on the inner side of the pen barrel in a circumferentially spaced manner, the front end of the locking piece 41 is supported and matched with the rear end of the pen core 2, the operating component comprises a connecting seat 51, a connecting rod 52 and an operating part 53, the rear end of the pen barrel is provided with a cavity 10, the connecting seat 51 is rotatably arranged in the cavity 10, the pen barrel is provided with a guide groove 14 which connects the inside and the outside of the cavity 10, one end of the guide groove 14 is located at the rear end of the pen barrel, the other end of the guide groove 14 is located at the side of the pen barrel, the connecting rod 52 is arranged in the guide groove 14 and can swing along the guide groove 14, one end of the connecting rod 52 is connected with the upper end of the connecting seat 51, the other end of the connecting rod 52 is connected with the operating part 53, the lower end of the connecting seat 51 is provided with a pushing part 511 on the corresponding side of the guide groove 14, the other side of the connecting seat 51, which is away from the pushing part 511, is transversely and longitudinally provided with a tongue plate 512, the inner side wall of the cavity 10 is provided with a limiting groove 101 which can be inserted into the tongue plate 512 and abuts against the tongue plate 512 to limit the cooperation, and the rear end of the push rod 42 and the pushing part 511 constitute a pushing cooperation.
[0026] It should be noted that in the above scheme, the telescopic locking mechanism belongs to the common structure in the click pen, the locking member 41 and the corresponding end of the push rod 42 are provided with a tooth part, the outer periphery of the locking member 41 and the push rod 42 is provided with a sliding groove matched with the guide rail 43, the front end of the guide rail 43 is provided with an inclined surface, and the locking member 41 and the push rod 42 can only move along the front and back directions of the pen under the limiting action of the guide rail 43, when the push rod 42 pushes the locking member 41 forward to make it out of the limiting range of the guide rail 43, the locking member 41 is driven to rotate a certain angle by the cooperation of the tooth parts between the push rod 42 and the locking member 41, when the locking member 41 moves backward under the driving of the first spring 31, the locking member 41 is continuously driven to rotate a certain angle by the abutting cooperation of the locking member 41 and the inclined surface at the front end of the guide rail 43, and the locking member 41 is abutted and limited in the axial position at the same time, thereby keeping the cartridge 2 in the cartridge ejection state, when the push rod 42 pushes the locking member 41 forward again, the locking member 41 can also be rotated a certain angle, and the locking member 41 after rotating again is not limited by the front end of the guide rail 43, and is reset backward again, so that the cartridge 2 returns to the cartridge retraction state.
[0027] When it is necessary to control the extension and retraction of the cartridge 2, the connecting seat 51 in the chamber 10 is driven to rotate (i.e. swing) around the tongue plate 512 as the fulcrum by operating the operation part 53 and the connecting rod 52, and the operation part changes from the initial state as shown in Figure 3 to the state as shown in Figure 10 , the push rod 42 is pushed forward by the pushing part 511 on the connecting seat 51, and the cartridge 2 is ejected or retracted by cooperating with the telescopic locking mechanism, the action of the pushing part 511 is similar to the cam structure, but compared with the traditional cam structure, the connecting seat 51 does not need to be provided with a connecting shaft, so the structure is simpler and the assembly is more convenient, and this cooperation mode can also reduce the wear between the connecting seat 51 and the pen barrel, and improve the service life of the product.
[0028] The pen barrel comprises a front barrel part 11, a rear barrel part 12 and an inner bushing 13, the inner bushing 13 is inserted and fixed in the rear barrel part 12 along the front end opening of the rear barrel part 12, the telescopic locking mechanism is arranged at the inner hole of the inner bushing 13, the upper end of the inner bushing 13 extends upward along one side edge to form a convex wall 131, the guide groove 14 is arranged in the rear barrel part 12, the inner side wall of the rear barrel part 12 is provided with a convex rib 121, the limiting groove 101 is formed by the convex rib 121 and the convex wall 131, and when assembled, the telescopic locking mechanism can be first installed in the inner bushing 13, the connecting seat 51 is installed in the rear barrel part 12, and then the inner bushing 13 and the telescopic locking mechanism are integrally inserted into the rear barrel part 12, so that the assembly is convenient, and the tongue plate 512 is placed in the limiting groove 101 at the same time of completing the assembly.
[0029] The front end of the inner sleeve 13 is inserted and fixed into the front rod portion 11 along the rear end opening, which allows the inner sleeve 13 to also serve as a connection between the front rod portion 11 and the rear rod portion 12. The rear end of the inner sleeve 13 can form a fixed insertion fit with the rear rod portion 12, and the front end of the inner sleeve 13 can form a screw fit with the front rod portion 11.
[0030] The pushing part 511 has an arc-shaped contact surface 511a, the rear end of the push rod 42 has a tapered structure, and the lower end of the connecting seat 51 is provided with a concave hole 513 for inserting the tapered tip 42a of the rear end of the push rod 42 (e.g., Figure 4 As shown in the figure, it is beneficial to increase the movement stroke of the push rod 42. The tapered surface at the rear end of the push rod 42 and the arc-shaped contact surface 511a of the pushing part 511 slide in contact, which can improve the contact effect between the pushing part 511 and the push rod 42 and reduce wear.
[0031] The connecting seat 51 has flat sidewalls 51a on both sides corresponding to the direction of the movement axis. The chamber 10 has recesses 102 at corresponding positions on both sides. The opening edge 102a of the recesses 102 and the sidewalls of the connecting seat 51 are matched for limiting. The recesses 102 can reduce the wear of the chamber 10 and the sidewalls of the connecting seat 51 and improve the service life.
[0032] The upper end of the connecting seat 51 has an arc-shaped surface, and the inner edges of both sides of the guide groove 14 have arc-shaped concave walls 14a that mate with the arc-shaped surface of the upper end of the connecting seat 51, reducing wear on the connecting seat 51 and the inner side of the chamber 10, and making the rotation of the connecting seat 51 smoother.
[0033] The operating part 53 and the connecting rod 52 are connected by a plug-in positioning mechanism. The operating part 53 is shaped like a doll, which facilitates the connection between the connecting rod 52 and the guide groove 14 and improves the aesthetics of the pen.
[0034] The rear end of the locking member 41 is provided with a protrusion 411. The front end of the push rod 42 and the protrusion 411 form a movable sleeve engagement. A second spring 32 is sleeved on the protrusion 411. The second spring 32 abuts between the locking member 41 and the push rod 42. The setting of the second spring 32 can drive the push rod 42 to move backward, so that it can apply force to the connecting seat 51. This design helps to prevent the operating parts from shaking, especially in the core-out state.
[0035] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.
Claims
1. A lever-type lead-out pen, comprising a pen barrel, a lead disposed within the pen barrel, a first spring, and a telescopic locking mechanism, wherein the first spring abuts between the pen barrel and the lead and drives the lead to a rearward reset movement, an operating component is oscillatingly connected to the rear end of the pen barrel, and the telescopic locking mechanism includes a cooperating locking element, a push rod, and a guide rail disposed on the inner side of the pen barrel, wherein the front end of the locking element and the rear end of the lead provide support cooperation, characterized in that: The operation component comprises a connecting seat, a connecting rod and an operation part, the rear end of the pen barrel is provided with a chamber, the connecting seat is rotationally arranged in the chamber, the pen barrel is provided with a guide slot connecting the inside and outside of the chamber, one end of the guide slot is located at the rear end of the pen barrel, the other end of the guide slot extends towards the side of the pen barrel, the connecting rod is arranged in the guide slot and can swing along the guide slot, one end of the connecting rod is connected with the upper end of the connecting seat, the other end of the connecting rod is connected with the operation part, the lower end of the connecting seat is provided with a pushing part corresponding to one side of the guide slot, the other side of the connecting seat away from the pushing part is transversely and longitudinally provided with a tongue plate, the inner side wall of the chamber is provided with a limiting groove for the insertion of the tongue plate and the abutting limiting cooperation of the tongue plate, and the rear end of the push rod and the pushing part constitute a pushing cooperation.
2. The push lever core pen according to claim 1, wherein: The pen barrel comprises a front rod part, a rear rod part and an inner bushing, the inner bushing is inserted and fixed in the rear rod part along the opening at the front end of the rear rod part, the telescopic locking mechanism is arranged at the inner hole of the inner bushing, the upper end of the inner bushing is provided with a convex wall extending upwards along one side edge, the guide slot is arranged in the rear rod part, and the inner side wall of the rear rod part is provided with a convex rib, and the limiting groove is formed by the convex rib and the convex wall.
3. The push lever core pen according to claim 2, wherein: The front end of the inner bushing is inserted and fixed in the front rod part along the opening at the rear end of the front rod part.
4. The push lever core pen according to claim 1, wherein: The pushing part has an arc-shaped contact surface, the rear end of the push rod has a conical structure, the lower end of the connecting seat is provided with a recess hole for the insertion of the conical tip of the rear end of the push rod, and the conical surface of the rear end of the push rod and the arc-shaped contact surface of the pushing part are in sliding contact.
5. The push-stick core delivery pen of claim 1 wherein: The two sides of the connecting seat corresponding to the direction of the movement axis have flat side walls, and the chamber is provided with notches at the corresponding positions of the two sides, and the opening edges of the notches and the side walls of the connecting seat are in limiting cooperation.
6. The push-stick core delivery pen of claim 1 wherein: The upper end of the connecting seat has an arc-shaped surface, and the inner edges of the two sides of the guide slot have arc-shaped inner recess walls in contact with the arc-shaped surface of the upper end of the connecting seat.
7. The push-stem core delivery pen of claim 1 wherein: The operation part and the connecting rod are in plug-in positioning cooperation, and the operation part is in the shape of a doll.
8. The push-stick core delivery pen of claim 1 wherein: The rear end of the locking part is provided with a convex column, the front end of the push rod and the convex column constitute movable sleeve joint, a second spring is sleeved on the convex column, and the second spring abuts between the locking part and the push rod. The rear end of the locking part is provided with a convex column, the front end of the push rod and the convex column constitute movable sleeve joint, a second spring is sleeved on the convex column, and the second spring abuts between the locking part and the push rod.