CN212465246U

CN212465246U - Middle bundle core

Info

Publication number: CN212465246U
Application number: CN202021294400.5U
Authority: CN
Inventors: 房永庆; 黄君杰
Original assignee: Zhejiang Axilone Shunhua Aluminium and Plastic Co Ltd
Current assignee: Zhejiang Axilone Shunhua Aluminium and Plastic Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-02-05
Anticipated expiration: 2030-07-03

Abstract

The application provides a well bundle core, includes: the spiral is axially communicated along the middle beam core and is provided with an internal thread; the top of the bead is a product accommodating part for bearing a product, the bottom of the bead extends into the spiral, and the extending part of the bead is provided with an external thread matched with the internal thread; the middle sleeve is rotatably sleeved on the periphery of the spiral and axially limited by the spiral, a guide structure matched with the beads is arranged between the middle sleeve and the beads, and the spiral is opposite to the middle sleeve and guides the beads to axially move along the middle beam core when the middle sleeve rotates. The application provides a well bundle core, convenient to use, the reliability is high.

Description

Middle bundle core

Technical Field

The application relates to the technical field of cosmetics, in particular to a middle bundle core.

Background

The packaging tube is used as a carrier of cosmetics such as lipstick, the central core is a core component of the packaging tube, and the traditional central core usually comprises a bead, a fork and a spiral which are nested from inside to outside. The fork is provided with an axially extending sliding groove, the spiral is provided with a sliding block, the sliding block penetrates through the sliding groove along the radial direction and then is matched with the internal thread of the spiral, and the overlapping position of the sliding groove and the internal thread determines the axial position of the bead. There is certain degree of difficulty in processing the internal thread on the thinner spiral of wall thickness, and the pitch is great, and the lotion in the pearl is easily excessively twisted out, and need increase extra part in order to compromise product appearance and reliability usually.

SUMMERY OF THE UTILITY MODEL

The application provides a well bundle core, convenient to use, the reliability is high.

The application provides a well bundle core, includes:

the spiral is axially communicated along the middle beam core and is provided with an internal thread;

the top of the bead is a product accommodating part for bearing a product, the bottom of the bead extends into the spiral, and the extending part of the bead is provided with an external thread matched with the internal thread;

the middle sleeve is rotatably sleeved on the periphery of the spiral and axially limited by the spiral, a guide structure matched with the beads is arranged between the middle sleeve and the beads, and the spiral is opposite to the middle sleeve and guides the beads to axially move along the middle beam core when the middle sleeve rotates.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the middle bundle is sleeved on the outer periphery of the middle sleeve.

Optionally, the product accommodating portion is a cup-shaped structure, a product filling opening is formed in the bottom of the cup-shaped structure, the bottom of the bead is a tubular structure, an inner cavity of the tubular structure is communicated with the product filling opening, and the external threads are formed in the side wall of the tubular structure.

Optionally, the guide structure includes a guide rib and a guide groove which are matched with each other, wherein the guide rib is located on the outer wall of the tubular structure and extends axially along the middle beam core, the bottom of the middle sleeve is rotatably sleeved on the periphery of the spiral, the top of the middle sleeve extends out of the spiral top surface, and the guide groove is formed in the inner edge of the extending part;

the guide ribs are two and are symmetrically arranged in the radial direction, and the number and the positions of the guide grooves are correspondingly arranged.

Optionally, the guide structure includes a sliding groove and a sliding block, which are matched with each other, wherein the sliding groove is located on the outer wall of the tubular structure and extends axially along the core of the middle beam, the bottom of the middle sleeve is rotatably sleeved on the periphery of the spiral, the top of the middle sleeve extends out of the top surface of the spiral, and the sliding block is arranged on the inner edge of the extending part;

the spout is two, and radial symmetrical arrangement, the quantity and the position of slider set up correspondingly.

Optionally, the bottom of the middle sleeve is rotatably sleeved on the periphery of the spiral, the top of the middle sleeve extends out of the top surface of the spiral, and an inward-turned limiting edge is arranged on the inner edge of the extending part;

the outer wall of the tubular structure is provided with a radially outward convex clamping block, and when the beads move to the extreme position, the clamping block is blocked on the limiting edge.

Optionally, an axial limiting structure matched with each other is arranged between the spiral outer wall and the inner wall of the middle sleeve.

Optionally, the axial limiting structure includes:

the limiting convex ring is arranged on one of the spiral outer wall and the inner wall of the middle sleeve;

and the limiting clamping groove is matched with the limiting convex ring and is arranged on the other one of the spiral outer wall and the middle sleeve inner wall.

Optionally, a bottom shell is fixedly sleeved at the bottom of the spiral.

Optionally, the side wall of the spiral is provided with a radially outward convex damping block, and the damping block is matched with the inner wall of the middle sleeve in an abutting mode.

Optionally, the damping mass is adjacent the top of the helix.

Optionally, the damping block is a plurality of blocks arranged at intervals along the circumferential direction.

Optionally, the side wall of the spiral is provided with a release opening at the periphery of the damping block to allow the damping block to move radially.

Optionally, in the axial direction of the middle bundle core, one side of the damping block is adjacent to the spiral top edge, and the other side of the damping block is adjacent to the release port.

Optionally, the side wall of the spiral forms the damping block in a self-winding and/or local thickening manner.

Optionally, the periphery of spiral is fixed with the chuck, the chuck with be equipped with the unidirectional rotation structure who mutually supports in order to restrict well cover rotation direction between the well cover.

Optionally, along the axial direction of the middle bundle core, the chuck is located at the bottom side of the middle sleeve, and a circumferential limiting structure matched with the chuck and the screw is arranged between the chuck and the screw.

Optionally, the circumferential limiting structure comprises a limiting clamping tongue and a limiting clamping groove which are matched with each other, one of the limiting clamping tongue and the limiting clamping groove is arranged on the chuck, and the other is arranged on the spiral.

Optionally, the limiting latch is arranged at the bottom edge of the chuck.

Optionally, the periphery of the spiral is provided with an annular step, the annular step is provided with a step surface facing the top side of the spiral, and the limiting clamping groove is formed in the step surface.

Optionally, the unidirectional rotation structure is a unidirectional latch which is respectively arranged on the chuck and the spiral and is mutually matched, and a guide tooth surface and a non-return tooth surface are respectively arranged on two sides of a tooth tip of the unidirectional latch.

Optionally, a circle of first one-way latch is distributed on the inner wall of the middle sleeve, and at least two second one-way latches meshed with the first one-way latch are distributed on the top edge of the chuck.

Optionally, the bottom side of the middle sleeve is provided with a thickened section, and the first one-way latch teeth are distributed on the inner wall of the thickened section and face the chuck.

Optionally, the top edge of the chuck is provided with an elastic rib, the second one-way latch is arranged on the elastic rib, and when the elastic rib deforms, the second one-way latch moves inwards in the radial direction of the middle bundle core and contacts with the first one-way latch in a meshing manner.

Optionally, the chuck is annular, and the chuck lateral wall is seted up closely the bar hole of elasticity muscle to adapt to the deformation of elasticity muscle.

Optionally, the elastic rib extends along the circumferential direction of the chuck.

Optionally, the elastic rib is further provided with a trigger handle on one side back to the second one-way latch for driving the deformation of the elastic rib.

Optionally, the chuck has a working position and a pre-assembly position relative to the spiral along the axial direction of the middle bundle core, and when the chuck is in the working position, the elastic rib abuts against the outer periphery of the spiral to limit the deformation of the elastic rib;

when the chuck is in a pre-assembly position, the elastic rib is in clearance fit with the periphery of the spiral to allow deformation of the elastic rib.

Optionally, the middle core bundle comprises beads for carrying a product, the beads have opposite top and bottom, a product accommodating portion is arranged at the top of the beads, the product accommodating portion is a cup-shaped structure, a plurality of supporting pieces are circumferentially distributed at intervals at a cup rim of the cup-shaped structure, the supporting pieces are formed by integrally extending the cup rim, and an open slot for releasing traction of each other is formed between two adjacent supporting pieces.

Optionally, the top of the holding piece is rounded.

Optionally, the bottom of the open slot is rounded.

Optionally, the holding pieces are uniformly distributed along the circumference of the bead.

Optionally, the number of the holding pieces is 3-6.

Optionally, the circumferential span of the holding piece is C1, the circumferential span of the open slot is C2, and the full space is C1: C2 ═ 1: 0.1-1.2.

Optionally, the open slot extends along or is diagonal to the bead generatrix.

Optionally, a hollow groove is formed in the side wall of the cup-shaped structure, and a part of the product in the product accommodating portion protrudes outwards and is clamped into the hollow groove.

Optionally, the bottom of the cup-shaped structure is provided with a product pouring opening.

Optionally, the bottom of the bead is a tubular structure, an inner cavity of the tubular structure is communicated with the product filling port, and the side wall of the tubular structure is provided with external threads.

The application also provides a processing method of the middle bundle core, which is used for processing the middle bundle core.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a core assembly of the present application;

FIG. 2 is an internal structural view of FIG. 1;

FIG. 3 is a schematic view of a bead structure according to an embodiment;

FIG. 4 is a schematic diagram of a spiral according to an embodiment;

FIG. 5 is a schematic structural view of a middle sleeve in one embodiment;

FIG. 6 is a schematic view of the middle sleeve of FIG. 5 from another perspective;

FIG. 7 is a schematic view of an embodiment of a chuck;

FIG. 8 is a cross-sectional view of a spiral in one embodiment;

FIG. 9 is a partial block diagram of a chuck in one embodiment;

FIG. 10 is a side view of a bead in one embodiment.

The reference numerals in the figures are illustrated as follows:

1. spiraling; 11. an internal thread; 12. a limit convex ring; 13. a damping block; 14. a release port; 15. a limiting clamping groove; 16. an annular step; 2. beads; 21. a product containment portion; 211. a holding sheet; 212. an open slot; 213. hollowing out the grooves; 22. an external thread; 23. a product filling opening; 24. a guide rib; 25. a clamping block; 26. a transition bevel; 27. a platform; 3. a middle sleeve; 31. a guide groove; 32. a limiting edge; 33. a limiting clamping groove; 34. a first one-way latch; 35. a thickening section; 4. intermediate bunching; 5. a chuck; 51. a limiting clamping tongue; 52. one-way latch; 521. a guide tooth surface; 522. non-return tooth surface; 53. an elastic rib; 54. a strip-shaped hole; 55. a trigger handle.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

In one embodiment, as shown in fig. 1, 2, the mesosphere core comprises a helix 1, beads 2 and a mesosphere 3. The screw 1 is axially through the core and has an internal thread 11. The top of the bead 2 is a product receiving part 21 for carrying a product, and the bottom of the bead 2 extends into the spiral 1, and the extending part is provided with an external thread 22 matching with the internal thread 11.

The middle sleeve 3 is rotatably sleeved on the periphery of the spiral 1 and is axially limited with the spiral 1, a guide structure matched with each other is arranged between the middle sleeve 3 and the beads 2, and when the spiral 1 rotates relative to the middle sleeve 3, the guide structure guides the beads 2 to axially move along the middle beam core.

The axial stop between the central sleeve 3 and the helix 1 allows the internal thread 11 to rotate relative to the central sleeve 3. The guide structure between the central sleeve 3 and the beads 2 allows the beads 2 to slide axially relative to the central sleeve 3, but restricts relative rotation of the two. The rotational motion of the spiral 1 is converted into the telescopic motion of the beads 2 by the guide structure.

In use, the position of the middle sleeve 3 is fixed, and the beads 2 and the paste (such as lipstick) in the beads 2 are moved along the axial direction by rotating the spiral 1. In this embodiment, spiral 1 is located the bottom of well bundle core, need not adopt thin-walled structure, can conveniently set up the internal thread 11 of normal pitch at the inner wall of spiral 1, has reduced the processing degree of difficulty, and the lotion is difficult for excessively stretching out.

In one embodiment, as shown in fig. 2, the middle sleeve 3 is sleeved with a middle beam 4. There is no relative rotation between the middle sleeve 3 and the middle bundle 4, and the beads 2 can be moved axially by the relative rotation of the middle bundle 4 and the spiral 1. The beads 2 move basically in the inner part of the middle beam 4, so that the pollution is not easy to happen, and the appearance of the product is good.

In one embodiment, as shown in FIG. 2, the product container 21 is a cup-shaped structure having a product filling opening 23 at the bottom, the beads 2 have a tubular structure at the bottom, the inner cavity of the tubular structure is communicated with the product filling opening 23, and the side wall of the tubular structure has external threads 22. The top and bottom ends of the beads 2 are open structures that allow for the injection of the paste from two directions into the product-containing portion 21. The product containing part 21 is of a cup-shaped structure, and the paste body abuts against the cup bottom for limiting after being solidified, so that the paste body is prevented from flowing backwards or falling off towards the bottom end in a sliding manner.

In one embodiment, as shown in fig. 2 and 3, the guiding structure includes guiding ribs 24 and guiding grooves 31 that are matched with each other, wherein the guiding ribs are located on the outer wall of the tubular structure and extend along the axial direction of the middle beam core, the bottom of the middle sleeve 3 is rotatably sleeved on the periphery of the spiral 1, the top of the middle sleeve 3 extends out of the top surface of the spiral 1, and the guiding grooves 31 are opened on the inner edge of the extending portion. The guide ribs 24 are two and are symmetrically arranged in the radial direction, so that the stress on the beads 2 is more uniform, and the number and the positions of the guide grooves 31 are correspondingly arranged.

In another embodiment, the guiding structure comprises a sliding groove and a sliding block which are matched with each other, wherein the sliding groove is positioned on the outer wall of the tubular structure and extends along the axial direction of the central beam core, the bottom of the central sleeve is rotatably sleeved on the periphery of the spiral, the top of the central sleeve extends out of the top surface of the spiral, and the sliding block is arranged on the inner edge of the extending part. The spout is two, and radial symmetrical arrangement, and the quantity and the position of slider set up correspondingly.

In order to prevent the beads 2 from falling out of the internal threads 11 caused by the over-rotation of the screw 1 by the user, in one embodiment, as shown in fig. 2 and 3, the bottom of the middle sleeve 3 is rotatably sleeved on the periphery of the screw 1, the top of the middle sleeve 3 extends out of the top surface of the screw 1, and the inner edge of the extending part is provided with an inward-turned limit edge 32. The outer wall of the tubular structure is provided with a radial convex clamping block 25, and when the beads move to the extreme position, the clamping block 25 is blocked by the limiting edge 32. In order to facilitate the installation of the beads 2 in the middle sleeve 3, the bottom ends of the clamping blocks 25 are provided with transitional inclined surfaces 26. The bottom end of the tubular structure forms a platform 27 with a thinned pipe wall, and the positions of the guide ribs 24 and the guide grooves 31 in the circumferential direction correspond to the platform 27. By arranging the platform 27, the heights of the guide ribs 24 and the guide grooves 31 in the radial direction are reduced, and interference with the internal threads 11 when the guide ribs 24 and the guide grooves 31 move axially is avoided.

In one embodiment, the guide groove 31 is opened on the limiting edge 32, and the size of the limiting edge 32 in the axial direction is 1/10-1/20 of the extending length of the guide rib 24. The guide structure increases small parts and small volumes, and ensures the portability of the middle bundle core.

And an axial limiting structure matched with each other is arranged between the spiral outer wall and the inner wall of the middle sleeve. The axial limiting structure comprises a limiting convex ring 12 and a limiting clamping groove 33. In one embodiment, as shown in fig. 2, 4, 5 and 6, the limit protruding ring 12 is disposed on the outer wall of the spiral 1, and the limit slot 33 is disposed on the inner wall of the middle sleeve 3 and is matched with the limit protruding ring 12. In another embodiment, the limit protruding ring 12 is disposed on the outer wall of the middle sleeve 3, and the limit slot 33 is disposed on the inner wall of the spiral 1 and is matched with the limit protruding ring 12.

In one embodiment, a bottom shell (not shown) is fixedly sleeved on the bottom of the spiral 1.

In one embodiment, as shown in fig. 4, the side wall of the spiral 1 is provided with a radially outward convex damping block 13, and the damping block 13 is abutted with the inner wall of the middle sleeve 3. The damping mass 13 is a plurality of masses arranged at intervals in the circumferential direction. The side wall of the spiral 1 is provided with a relief opening 14 at the periphery of the damping mass 13 to allow radial movement of the damping mass 13. When the energy-saving device is assembled, the damping block 13 is pressed by the middle sleeve 3 and then elastically deforms inwards along the radial direction to store energy. When the user uses, damping piece 13 outwards resumes the deformation and supports the inner wall of well cover 3 tightly to provide the stable torsion that need overcome when rotating spiral 1, improve the operation and feel. In one embodiment, as shown in FIG. 4, the damping mass 13 is adjacent to the top of the helix 1 to reduce stress when the damping mass 13 deforms. In the axial direction of the middle beam axis, the damping mass 13 is adjacent to the spiral top edge on one side and the release opening 14 on the other side. In one embodiment, the side walls of the spiral 1 form the damping mass 13 in a self-winding manner. In another embodiment, as shown in fig. 8, the side wall of the spiral 1 forms the damping mass 13 in a locally thickened manner, and the dotted line in fig. 8 is the outer circumferential profile of the spiral 1 before thickening. In another embodiment, the side wall of the spiral 1 forms the damping block 13 in a self-winding manner, and the damping block is thickened at the winding position.

In one embodiment, as shown in fig. 1 and 2, a chuck 5 is fixed on the periphery of the screw 1, and a unidirectional rotation structure which is matched with the chuck 5 and the middle sleeve 3 to limit the rotation direction of the middle sleeve 3 is arranged between the chuck 5 and the middle sleeve 3. Along the axial direction of the middle bundle core, the chuck 5 is arranged at the bottom side of the middle sleeve 3, and a circumferential limiting structure matched with each other is arranged between the chuck 5 and the spiral 1. The circumferential limiting structure comprises a limiting clamping tongue 51 and a limiting clamping groove 15 which are matched with each other, one of the limiting clamping tongue 51 and the limiting clamping groove 15 is arranged on the chuck 5, and the other is arranged on the spiral 1. In one embodiment, as shown in FIG. 7, a limit stop 51 is provided at the bottom edge of the chuck 5. In one embodiment, as shown in fig. 4, the periphery of the spiral is provided with an annular step 16, the annular step is provided with a step surface facing the top side of the spiral 1, and the limiting clamping groove 15 is arranged on the step surface.

The unidirectional rotation structure is a unidirectional latch which is respectively arranged on the chuck 5 and the spiral 1 and is mutually matched, and a guide tooth surface 521 and a non-return tooth surface 522 are respectively arranged at two sides of the tooth tip of the unidirectional latch. The chuck 5 has an end surface perpendicular to the axial direction. As shown in fig. 9, the angle a between the guide tooth surface 521 and the end surface of the chuck 5₁Is 0 to 30 degrees. Included angle a between backstop tooth surface 522 and end surface of chuck 5₂Is 80 to 100 degrees.

The inner wall of the middle sleeve 3 is provided with a ring of first unidirectional latch 34, and the top edge of the chuck 5 is provided with at least two second unidirectional latches 52 meshed with the first unidirectional latch 34. The bottom side of the middle sleeve 3 is provided with a thickened section 35, and the first one-way latch 34 is distributed on the inner wall of the thickened section 35 and faces the chuck 5.

In one embodiment, as shown in fig. 7, the top edge of the chuck 5 has an elastic rib 53, the second one-way latch 52 is disposed on the elastic rib 53, and when the elastic rib 53 is deformed, the second one-way latch 52 moves in the axial direction and engages with the first one-way latch 34.

When the paste needs to be extended, the spiral 1 and the chuck 5 are rotated in the forward direction, the first one-way latch 34 extrudes the second one-way latch 52 towards the bottom end, the first one-way latch 34 slides towards the non-return tooth surface 522 along the guide tooth surface 521, and the bead 2 moves towards the top end. When the length of the paste extending out of the middle beam core is appropriate, the user stops rotating the screw 1, and the non-return tooth surface of the first one-way latch 34 is abutted against the non-return tooth surface 522 of the second one-way latch 52 for limiting. When the external force accidentally drives the screw 1 to rotate reversely, for example, the external force extrudes the paste toward the bottom end, the stress is concentrated on the two non-return tooth surfaces, and the included angle between the two non-return tooth surfaces and the circumferential direction is large, so that the elastic rib 53 cannot be driven to move along the axial direction. Therefore, the axial position and the rotation angle of the paste are stably kept in a locking state, and the pollution problem caused by the fact that the exposed part of the paste is retracted into the middle beam core again is avoided.

In another embodiment, the top edge of the chuck is provided with an elastic rib, and the second one-way latch is arranged on the elastic rib, and when the elastic rib is deformed, the second one-way latch moves inwards along the radial direction of the middle beam core and contacts with the meshing of the first one-way latch.

In one embodiment, the chuck 5 is annular, and the sidewall of the chuck 5 is provided with a strip-shaped hole 54 adjacent to the elastic rib 53 to adapt to the deformation of the elastic rib 53. When the screw 1 is turned, the elastic rib 53 is bent toward the inside of the strip-shaped hole 54.

In another embodiment, the resilient rib extends in the circumferential direction of the chuck.

The thread pitch of the embodiment is far smaller than that of the traditional middle beam core, so that waste caused by excessive exposure of the paste can be avoided under normal conditions. In order to cope with the unexpected situation that the paste is excessively exposed, in an embodiment, as shown in fig. 1 and 7, the elastic rib 53 is further provided with a trigger handle 55 on a side facing away from the second one-way latch 52 for driving the elastic rib 53 to deform. In one embodiment, the trigger stem 55 is raised radially above the hub 3.

The chuck 5 has a working position and a pre-loading position relative to the spiral 1 along the axial direction of the middle bundle core, and when the chuck 5 is in the working position, the elastic ribs 53 abut against the periphery of the spiral 1 to limit the deformation of the elastic ribs 53. When the chuck 5 is in the pre-assembly position, the resilient ribs 53 are in a clearance fit with the outer periphery of the spiral 1 to allow deformation of the resilient ribs 53.

The middle bundling core comprises beads 2 for bearing a product, the beads 2 are provided with opposite top and bottom, a product accommodating part 21 is arranged at the top of the beads, the product accommodating part 21 is of a cup-shaped structure, a plurality of supporting sheets 211 are distributed at intervals along the circumferential direction at the cup opening part of the cup-shaped structure, the supporting sheets 211 are formed by integrally extending the cup opening part, and an open groove 212 for releasing traction of each other is arranged between every two adjacent supporting sheets 211. After the traction between two adjacent holding pieces 211 is released through the open slot 212, the top ends of the holding pieces 211 can be allowed to bend and deform outwards, so that the opening part of the bead 2 has certain relaxation capacity, and the adaptability to the deformation of the paste is enhanced.

The holding pieces 211 are uniformly distributed along the circumferential direction of the beads 2. The number of the holding pieces is 3-6. The top of the holding piece 211 is rounded. The bottom of the open slot 212 is rounded. As shown in fig. 10, the circumferential span of the holding piece 211 is C1, the circumferential span of the open slot 212 is C2, and the full space C1: C2 is 1: 0.1-1.2. Open slots 212 extend along or are diagonal to the bead 2 generatrix.

In order to prevent the paste from coming out of the product-holding portion 21 toward the top end, in an embodiment, as shown in fig. 3, a hollow groove 213 is formed on the sidewall of the cup-shaped structure, and the product in the product-holding portion 21 partially protrudes and is clamped into the hollow groove 213.

During assembly, the chuck 5 can be sleeved outside the spiral 1, the limiting clamping tongue 51 on the chuck 5 is clamped into the limiting clamping groove 15 on the spiral 1, and the chuck 5 and the spiral 1 cannot rotate relatively. The beads 2 are inserted into the middle sleeve 3, and the clamping blocks 25 on the beads 2 penetrate through the limiting edges 32 to prevent the beads 2 from being pulled out reversely. Then the middle sleeve 3 is sleeved outside the spiral 1, and if the beads 2 are not inserted to the bottom, the middle sleeve 3 and the chuck 5 can rotate relatively by pulling the trigger handle 55. Beads 2 are then inserted into the bottom end of the helix 1 by rotating the helix 1. And finally, sleeving the middle beam 4 outside the middle sleeve 3.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A core of a core bundle, comprising:

2. The core of claim 1, wherein the outer jacket of the middle sleeve is sleeved with a middle beam.

3. The core bundle of claim 1, wherein the product containment portion is a cup-shaped structure having a product fill opening at a bottom thereof, the bead having a tubular structure at a bottom thereof, the tubular structure having an internal cavity in communication with the product fill opening, the tubular structure having the external threads on a sidewall thereof.

4. The middle bundle core according to claim 3, wherein the guide structure comprises a guide rib and a guide groove which are matched with each other, wherein the guide rib is positioned on the outer wall of the tubular structure and extends along the axial direction of the middle bundle core, the bottom of the middle sleeve is rotatably sleeved on the periphery of the spiral, the top of the middle sleeve extends out of the top surface of the spiral, and the guide groove is formed in the inner edge of the extending part;

5. The core of claim 3, wherein the bottom of the middle sleeve is rotatably sleeved on the periphery of the spiral, the top of the middle sleeve extends out of the top surface of the spiral, and an inward-turned limiting edge is arranged on the inner edge of the extending part;

6. The core bundle of claim 1, wherein an axial limiting structure is disposed between the spiral outer wall and the inner wall of the middle sleeve, and the axial limiting structure comprises:

7. The core of claim 1, wherein the side wall of the helix is provided with radially outwardly projecting damping nubs that engage against the inner wall of the middle sleeve.

8. The core of claim 7, wherein the side wall of the helix is provided with relief openings at the outer periphery of the damping mass to allow radial movement of the damping mass.

9. The core of claim 8, wherein the damping mass is adjacent to the helical top edge on one side and the release port on the other side in the axial direction of the core.

10. The core of claim 7, wherein the sidewalls of the helix form the damping mass in a self-winding and/or locally thickened manner.

11. The core of claim 1, wherein a chuck is fixed on the periphery of the spiral, and a unidirectional rotation structure is arranged between the chuck and the middle sleeve, which is matched with each other to limit the rotation direction of the middle sleeve.

12. The core of claim 11, wherein the chuck is located at the bottom side of the middle sleeve along the axial direction of the core, a circumferential limiting structure is provided between the chuck and the spiral, the circumferential limiting structure comprises a limiting tongue and a limiting groove, one of the limiting tongue and the limiting groove is provided on the chuck, and the other limiting groove is provided on the spiral.

13. The core bundle of claim 11, wherein the unidirectional rotation structure is a unidirectional latch respectively disposed on the chuck and the spiral and cooperating with each other, and a guide tooth surface and a non-return tooth surface are respectively disposed on two sides of a tooth tip of the unidirectional latch.

14. The core of claim 11, wherein the inner wall of the middle sleeve is provided with a ring of first unidirectional latch teeth, and the top edge of the chuck is provided with at least two second unidirectional latch teeth meshed with the first unidirectional latch teeth.

15. The core bundle of claim 14, wherein the bottom side of the middle sleeve is provided with a thickened section, and the first unidirectional latch is distributed on the inner wall of the thickened section and faces the chuck.

16. The core bundle of claim 14, wherein the chuck has a resilient rib at a top edge thereof, the second one-way latch being disposed on the resilient rib, the second one-way latch moving radially inward along the core bundle and contacting engagement with the first one-way latch when the resilient rib is deformed.

17. The core of claim 16, wherein the chuck is annular, and the sidewall of the chuck is formed with a strip-shaped hole adjacent to the elastic rib to accommodate the deformation of the elastic rib.

18. The core bundle of claim 16, wherein the resilient ribs extend circumferentially of the chuck.

19. The core assembly of claim 16, wherein the elastic rib is further provided with a trigger handle at a side facing away from the second one-way latch for driving the deformation of the elastic rib.

20. The core of claim 16, wherein the chuck has a working position and a pre-loading position relative to the spiral in an axial direction of the core, and the elastic rib abuts against an outer periphery of the spiral to limit deformation of the elastic rib when the chuck is in the working position;

21. The core bundle of claim 1, wherein the core bundle comprises a bead for carrying a product, the bead has opposite top and bottom portions, a product accommodating portion is formed at the top portion of the bead, the product accommodating portion is a cup-shaped structure, a plurality of holding pieces are circumferentially distributed at intervals at a cup opening portion of the cup-shaped structure, the holding pieces are formed by integrally extending the cup opening portion, and an open slot for releasing traction of each other is formed between two adjacent holding pieces.

22. The core of claim 3, wherein the side wall of the cup-shaped structure is formed with a hollow groove, and a part of the product in the product accommodating portion protrudes outward and is clamped into the hollow groove.

23. The core bundle of claim 3, wherein the bottom of the cup-shaped structure is provided with a product filling opening, the bottom of the bead is a tubular structure, the inner cavity of the tubular structure is communicated with the product filling opening, and the side wall of the tubular structure is provided with external threads.