Extrusion core discharged solid drawing stick
A solid and drawing stick technology, which is applied in printing, writing utensils, writing connectors, etc., can solve problems such as slippery teeth, easily contaminated items, and children's accidental ingestion, so as to extend the service life, ensure continuity, and bright colors Effect
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Embodiment 1
[0023] Embodiment 1: as Figure 1-3 As shown, an extruded core type solid painting stick includes an elastic sleeve 10 and a rod core 20 accommodated in the sleeve. The rod core 20 is attached to the inner wall of the sleeve and can be relatively The sleeve moves axially along an axis. The sleeve 10 has a head end 11 and a tail end 12. The two ends of the rod core 20 are respectively a rod head 21 and a rod tail 22. The rod tail 22 is fixedly connected to the inner sleeve 30, the inner sleeve 30 has a connecting portion 31 connected to the club tail and an extruding portion 32 protruding from the club tail, by extruding the extruding portion 32 from the outer wall of the sleeve, the club head 21 can pass through the The head end 11 of the sleeve is exposed outside the sleeve. The present invention mainly includes a sleeve 10 and a rod core 20, and an inner sleeve 30 is provided at the rod tail of the rod core. The rod tail 22, and then the rod core is solidified and molded, ...
Embodiment 2
[0025] Embodiment 2: as Figure 4 As shown, the difference from Embodiment 1 is that: the tail end 12 of the sleeve is provided with a tail plug 50 capable of sealing it, and there is a cavity between the tail plug 50 and the inner sleeve 30 . The tail plug 50 is connected with a telescopic rod 60 , the telescopic rod 60 is placed in the cavity, and the telescopic rod 60 can expand and contract along the axial direction of the sleeve so as to be close to or away from the inner sleeve 30 . The telescopic rod 60 includes an outer rod and at least one inner rod, the outer rod is axially fixed on the tail plug 50 and partially protrudes from the outer side of the tail plug 50, the inner side of the outer rod is provided with an internal thread, the inner The outside of the rod has an external thread mating with the internal thread. The rod core is gradually shortened during use, so there will be a larger and larger gap between the rod core and the tail plug 50. When the user acci...
Embodiment 3
[0026] Embodiment 3: as Figure 5As shown, the difference from Embodiment 1 is that the cross-section of the connecting part 31 of the inner sleeve is T-shaped and is inserted into the inside of the club tail 22. And the upper part of the extruding part is provided with a through groove vertically downward along its top, and the upper part of the extruding part is divided into two independent elastic parts 33 by the said through groove, and the outer surface of the elastic part 33 is provided with at least one The boss 34 is embedded in the inner wall of the sleeve. A boss 34 is respectively arranged on the two elastic parts 33, and the two bosses are distributed symmetrically along the central axis of the sleeve. The included angle is an acute angle. The purpose of setting the inner sleeve to this structure is also to prevent the rod core 20 from being completely retracted into the sleeve inside because of the painter's misoperation in the painting process; A symmetrical b...
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