Push-button replaceable packaging tube

Abstract

The present application provides a button-type replaceable packaging tube, comprising a bottom shell and a middle bundle core installed in the bottom shell, the bottom shell comprising an outer bottom and an inner bottom that are mutually nested and slidably matched, wherein the inner bottom has a first working position and a second working position on the sliding path, and a positioning structure that cooperates with each other to keep the inner bottom in the corresponding working position is provided between the inner bottom and the outer bottom; an elastic claw is provided in the inner bottom, the middle bundle core is detachably inserted in the inner bottom, and the middle bundle core is provided with a limiting portion that cooperates with the elastic claw; a driving member that acts on the elastic claw is provided in the outer bottom, and the elastic claw has a locking state that is engaged with the limiting portion and an unlocking state that releases the limiting portion under the action of the driving member, and when the inner bottom switches between different working positions, the driving member acts on the elastic claw to switch the state accordingly. The button-type replaceable packaging tube provided in the present application can realize the replaceability of the middle bundle core.

Description

Technical Field

[0001] The present application relates to the technical field of cosmetic packaging, and in particular to a button-type replaceable packaging tube. Background Art

[0002] The existing packaging tubes on the market include a middle bundle core and a bottom shell. Since the middle bundle core and the bottom shell are inseparable, the middle bundle core cannot be sold separately. With the development of market demand, there is a gradual demand for replacing the middle bundle core, which cannot be met by the existing packaging tube technology. Summary of the invention

[0003] Based on this, it is necessary to provide a button-type replaceable packaging tube to address the problem that the existing middle bundle core and the bottom shell are inseparable.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: a button-type replaceable packaging tube, comprising a bottom shell and a middle bundle core installed in the bottom shell, the bottom shell comprising an outer bottom and an inner bottom which are mutually nested and slidably matched, wherein the inner bottom has a first working position and a second working position on a sliding path, and a positioning structure which cooperates with the outer bottom to keep the inner bottom in a corresponding working position is provided between the inner bottom and the outer bottom;

[0005] The inner bottom is provided with an elastic claw, the middle bundle core is detachably inserted in the inner bottom, and the middle bundle core is provided with a limiting portion matched with the elastic claw;

[0006] The outer bottom is provided with a driving member that acts on the elastic claw. Under the action of the driving member, the elastic claw has a locked state engaged with the limiting portion, and an unlocked state that releases the limiting portion. When the inner bottom switches between different working positions, the driving member acts on the elastic claw accordingly to switch the state.

[0007] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0008] Optionally, the positioning structure includes:

[0009] A latch tongue, the latch tongue being arranged on the inner bottom and extending radially outwardly along the inner bottom;

[0010] The bayonet is provided on the outer bottom and cooperates with the latch tongue. The bayonet comprises a first bayonet and a second bayonet. The latch tongue is correspondingly latched into the first bayonet or the second bayonet in the first working position or the second working position.

[0011] Optionally, the outsole comprises:

[0012] The middle cover and the outer cover are nested with each other, the inner bottom is slidably installed in the middle cover, and the first bayonet and the second bayonet are both arranged on the middle cover;

[0013] The outer shell is also embedded with a button which abuts against the latch tongue. Under the action of the button, the latch tongue is separated from the latch port.

[0014] Optionally, the outer sleeve is provided with a button installation opening, and the middle sleeve is provided with a button limiting opening; the button comprises:

[0015] A button body which is radially floating and embedded in the button installation opening;

[0016] A pin fixed to the button body and placed on the edge of the button installation opening;

[0017] A limit hook fixed to the inner wall of the button body and matched with the button limit opening;

[0018] A pressing protrusion fixed to the inner wall of the button body and abutting against the latch tongue.

[0019] Optionally, the inner bottom is cup-shaped, a through hole is provided at the bottom of the cup, and the elastic claws are distributed around the through hole;

[0020] The driving member is columnar and extends into the inner bottom through the through hole, and radially abuts against the elastic claw;

[0021] The elastic claw moves axially relative to the driving member, and the elastic claw swings radially to switch states.

[0022] Optionally, the inner bottom and the outer bottom are further provided with a compression spring for driving the inner bottom to enter the second working position.

[0023] Optionally, the elastic claw includes a root and a claw head;

[0024] In the first working position, the root and the claw head are radially against the driving member to push the claw head to expand outward into a locked state;

[0025] In the second working position, the claw head is separated from the driving member, and the claw head elastically retracts radially inward to enter an unlocked state.

[0026] Optionally, there are 2 to 4 elastic claws, each of which is distributed around the driving member and abuts against the outer wall of the driving member.

[0027] Optionally, the limiting portion includes:

[0028] An insertion hole is provided at the bottom of the middle bundle core, and a limiting step is provided on the inner wall of the insertion hole. In a locked state, the elastic claw extends into the insertion hole and rests on the limiting step.

[0029] Optionally, the middle beam core includes, from inside to outside:

[0030] Beads for carrying paste;

[0031] A fork which is rotationally limited with the inner bottom and is used to accommodate and guide the axial movement of the bead;

[0032] A spiral rotatably sleeved on the outer periphery of the fork for driving the bead to move axially;

[0033] A fixed sleeve is arranged on the middle bundle of the spiral outer circumference;

[0034] The limiting portion is arranged at the bottom of the fork.

[0035] The button-type replaceable packaging tube provided in the present application realizes the relative separation of the inner sole and the outer sole by pressing the positioning structure. The driving member of the outer sole acts on the elastic claw of the inner sole. The elastic claw cooperates with the limiting part to realize the locking and unlocking between the inner sole and the middle bundle core, thereby realizing the detachable replacement of the middle bundle core. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a button-type replaceable packaging tube provided in one embodiment of the present application;

[0037] Figure 2 for Figure 1 The exploded structural diagram of the packaging tube shown;

[0038] Figure 3 for Figure 1 The schematic diagram of the structure of the packaging tube shown in another perspective;

[0039] Figure 4 for Figure 3 The schematic cross-sectional view of the packaging tube shown at AA;

[0040] Figure 5 for Figure 4 The enlarged schematic diagram of the packaging tube at position A shown;

[0041] Figure 6 for Figure 4 The enlarged schematic diagram of the packaging tube at B shown;

[0042] Figure 7 for Figure 2 A schematic diagram of the structure of the outer jacket in the packaging tube shown;

[0043] Figure 8 for Figure 2 The schematic diagram of the structure of the middle sleeve in the packaging tube shown;

[0044] Fig. 9 for Figure 8 The structure diagram of the middle sleeve shown in another perspective;

[0045] Fig.10 for Figure 2 A schematic diagram of the structure of the button in the packaging tube shown;

[0046] Fig.11 for Figure 2 The schematic diagram of the structure of the inner bottom in the packaging tube shown;

[0047] Fig.12 for Fig.11 The schematic diagram of the structure of the inner bottom shown in another perspective;

[0048] Fig.13 for Figure 4 A schematic diagram of the assembly structure of the fork and the bead in the packaging tube shown;

[0049] Fig.14 for Fig.13 The schematic diagram of the structure of the fork shown;

[0050] Fig.15 for Fig.14 The fork is shown in a schematic cross-sectional view at BB;

[0051] Fig.16 for Figure 4 A schematic diagram of the structure of the spiral in the packaging tube shown;

[0052] Fig.17 for Fig.16 Schematic diagram of the structure of the spiral shown from another perspective.

[0053] The reference numerals in the figures are described as follows:

[0054] 100, packaging tube; 10, bottom shell; 11, outer bottom; 111, driving member; 112, middle sleeve; 1121, button limiting opening; 1122, limiting groove; 1123, socket; 113, outer sleeve; 1131, button installation opening; 1132, limiting protrusion; 114, button; 1141, button body; 1142, plug pin; 1143, limiting hook; 1144, extrusion protrusion; 115, sliding protrusion; 12, inner bottom; 121, elastic claw; 1211, root; 1212, claw; 122, through hole; 123, sliding slot; 13, positioning structure; 131, latch; 1311, limiting surface; 1312, guiding slope; 132, bayonet; 1321, first bayonet; 1322, second bayonet; 14, compression spring; 20, middle bundle core; 21, limiting portion; 211, jack; 212, limiting step; 22, bead; 23, fork; 231, positioning rib; 24, spiral; 25, middle bundle. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0058] Please also refer to 1 to Figure 6 An embodiment of the present application provides a packaging tube 100 that is easy to replace the middle bundle core 20, and the packaging tube 100 can be used to place lipstick paste, etc.

[0059] The packaging tube 100 includes a bottom shell 10 and a middle beam core 20. A lipstick cover can be installed on the middle beam core 20. The cover and the bottom shell 10 are used together to seal the lipstick paste. The middle beam core 20 is installed in the bottom shell 10, and a detachable plug-in method is adopted. The middle beam core 20 is plugged into the bottom shell 10 and the middle beam core 20 can be removed from the bottom shell 10, that is, the middle beam core 20 and the bottom shell 10 are detachably installed to facilitate the replacement of the middle beam core 20. Among them, the middle beam core 20 and the bottom shell 10 both have an axis and the two axes coincide. Since the middle beam core 20 is not the key improvement point of the present application, any adaptable middle beam core 20 of the prior art can be used, but an improved embodiment of the middle beam core 20 is also provided below.

[0060] The bottom shell 10 includes an outer bottom 11 and an inner bottom 12. The outer bottom 11 is nested in the outer periphery of the inner bottom 12. The outer bottom 11 and the inner bottom 12 are slidably matched. The inner bottom 12 can generate axial movement relative to the outer bottom 11 to form a sliding path. The inner bottom 12 has a first working position and a second working position on the sliding path. When the inner bottom 12 is in the first working position, the packaging tube 100 is in a locked state. When the inner bottom 12 is in the second working position, the packaging tube 100 is in an unlocked state.

[0061] A positioning structure 13 that cooperates with each other is provided between the outer bottom 11 and the inner bottom 12 so as to fix the relative position of the outer bottom 11 and the inner bottom 12, so that the inner bottom 12 is kept in the corresponding working position. For example, when the inner bottom 12 is in the first working position, the positions of the inner bottom 12 and the outer bottom 11 can be relatively fixed due to the positioning structure 13; when the inner bottom 12 slides to the second working position relative to the outer bottom 11, similarly, the inner bottom 12 is kept in the second working position by the positioning structure 13. Before the inner bottom 12 slides axially, the positioning structure 13 first releases the axial positioning effect, and the inner bottom 12 then slides relatively. Among them, the force that causes the inner bottom 12 to slide relatively can be an external force, such as pulling the inner bottom 12, or acting on the inner bottom 12 by setting a driving component. It can be understood that the positioning structure 13 can adopt a buckle structure, a latch structure or a lock structure. When the inner bottom 12 switches from the first working position to the second working position, the outer bottom 11 and the inner bottom 12 can be separated by pressing the positioning structure 13, thereby realizing the change of the working position.

[0062] Specifically, an elastic claw 121 is provided in the inner bottom 12, and a limiting portion 21 is provided in the middle bundle core 20. The elastic claw 121 cooperates with the limiting portion 21 to realize the axial positioning between the middle bundle core 20 and the inner bottom 12, and the middle bundle core 20 is inserted into the inner bottom 12. When the elastic claw 121 is separated from the limiting portion 21, the axial positioning between the middle bundle core 20 and the inner bottom 12 is released, and the middle bundle core 20 can be removed from the inner bottom 12, so that the middle bundle core 20 can be detachably inserted into the inner bottom 12.

[0063] The outer bottom 11 is provided with a driving member 111 that interacts with the elastic claw 121. Under the action of the driving member 111, the elastic claw 121 engages with the limiting portion 21 to achieve axial positioning between the middle bundle core 20 and the inner bottom 12, forming a locked state. When the elastic claw 121 releases the limiting portion 21, an unlocked state is formed.

[0064] When the inner bottom 12 switches between different working positions, the driving member 111 acts on the elastic claw 121 accordingly to switch the state. When the inner bottom 12 is in the first working position, the positions of the inner bottom 12 and the outer bottom 11 are relatively fixed by the positioning structure 13, and the driving member 111 of the outer bottom 11 acts on the elastic claw 121 of the inner bottom 12, so that the elastic claw 121 and the limiting portion 21 form a locked state, thereby locking the middle bundle core 20 in the inner bottom 12. After the axial positioning effect between the inner bottom 12 and the outer bottom 11 is released, when the inner bottom 12 slides relative to the outer bottom 11 and switches to the second working position, the driving member 111 releases the elastic claw 121, and the elastic claw 121 and the limiting portion 21 form an unlocked state, and the inner bottom 12 and the outer bottom 11 are positioned in the second working position again by the positioning structure 13.

[0065] The packaging tube 100 provided in this embodiment realizes the relative separation of the inner bottom 12 and the outer bottom 11 by pressing the positioning structure 13. The driving member 111 of the outer bottom 11 acts on the elastic claw 121 of the inner bottom 12. The elastic claw 121 cooperates with the limiting portion 21 to realize the locking and unlocking between the inner bottom 12 and the middle bundle core 20, thereby realizing the detachable replacement of the middle bundle core 20.

[0066] Please refer to Figures 7 to 12 In another embodiment, the inner bottom 12 and the outer bottom 11 are slidably matched, and a sliding groove 123 is provided on the outer wall of the inner bottom 12, and a sliding convex strip 115 matching the sliding groove 123 is provided on the inner wall of the outer bottom 11. The sliding convex strip 115 is inserted into the sliding groove 123 to realize the circumferential positioning of the inner bottom 12 and the outer bottom 11. Among them, the sliding groove 123 extends along the axial direction, and there is at least one sliding groove 123, such as 2, 3 or 4 sliding grooves 123, and each sliding groove 123 is distributed along the circumference of the inner bottom 12, and the sliding grooves 123 are preferably 2. A flaring structure is provided at the bottom of the sliding groove 123 to facilitate the insertion of the inner bottom 12 into the outer bottom 11. It can be understood that the sliding groove can also be provided on the inner wall of the outer bottom 11, and the sliding convex strip is correspondingly provided on the outer wall of the inner bottom 12.

[0067] In another embodiment, the positioning structure 13 between the inner sole 12 and the outer sole 11 includes a tongue 131 and a slot 132 that cooperates with the tongue 131. The tongue 131 is arranged on the inner sole 12, and the slot 132 is opened on the outer sole 11. The tongue 131 extends radially outward along the inner sole 12, has an outward-turning tendency, that is, it at least partially protrudes radially outward, and extends into the slot 132 to form a snap-fit ​​state to achieve axial positioning between the inner sole 12 and the outer sole 11.

[0068] The bayonet 132 includes a first bayonet 1321 and a second bayonet 1322. When the inner bottom 12 is in the first working position, the latch tongue 131 is latched into the first bayonet 1321; when the inner bottom 12 is in the second working position, the latch tongue 131 is latched into the second bayonet 1322. Specifically, the first bayonet 1321 and the second bayonet 1322 are arranged and distributed along the axis direction of the outer bottom 11. In a preferred embodiment, the latch tongue 131 and the inner bottom 12 are an integral structure.

[0069] In another embodiment, the outer sole 11 includes a middle sleeve 112 and an outer sleeve 113 which are nested with each other. The middle sleeve 112 and the outer sleeve 113 are roughly cylindrical. The inner sole 12 is slidably installed in the middle sleeve 112. The middle sleeve 112 is provided with a limiting groove 1122. The inner wall of the outer sleeve 113 is provided with a limiting protrusion 1132. The limiting protrusion 1132 cooperates with the limiting groove 1122 to achieve nesting. It can be understood that the limiting protrusion can also be provided on the middle sleeve 112, and the limiting groove is correspondingly provided on the outer sleeve 113.

[0070] The outer sleeve 113 is embedded with a button 114, which abuts against the latch 131. Under the action of the button 114, the latch 131 is separated from the bayonet 132, so as to realize the disassembly of the middle bundle core by controlling the button. The middle sleeve 112 is provided with a first bayonet 1321 and a second bayonet 1322. It can be understood that in the first working position, the latch 131 is inserted into the first bayonet 1321, and the button 114 abuts against the latch 131. In the process of switching from the first working position to the second working position, the button 114 is pressed, and the button 114 squeezes the latch 131, and the latch 131 is separated from the first bayonet 1321, the axial positioning between the outer bottom 11 and the inner bottom 12 is released, and the inner bottom 12 moves axially relative to the outer bottom 11. When the latch 131 slides to the second bayonet 1322, the latch 131 is inserted into the second bayonet 1322 to realize axial positioning, so that the inner bottom 12 remains in the second working position.

[0071] The end of the tongue 131 is a limiting surface 1311 that abuts against the inner edge of the corresponding bayonet, which is generally a plane. A guiding slope 1312 is provided on the outer side of the limiting surface 1311. When the central bundle core is reset, the guiding slope 1312 of the tongue 131 contacts the bottom edge of the second bayonet 1322 and guides the tongue 131 radially inward until it reaches the first bayonet 1321. The tongue 131 expands outward again under the action of its own elasticity and is clamped into the first bayonet 1321, that is, the limiting surface 1311 abuts against the top edge of the first bayonet 1321.

[0072] In another embodiment, the outer shell 113 is provided with a button installation opening 1131, and the button installation opening 1131 is used to realize the nesting of the button 114 in the outer shell 113. The button 114 includes a button body 1141 and a pin 1142, and the pin 1142 is fixed on the button body 1141. The button body 1141 is radially floatingly embedded in the button installation opening 1131, and the pin 1142 is placed on the edge of the button installation opening 1131. It can be understood that the button body 1141 can be displaced along the radial direction of the outer shell 113 under the action of external force.

[0073] A pressing protrusion 1144 is fixedly provided on the inner wall of the button body 1141, and the pressing protrusion 1144 abuts against the latch tongue 131. When the button body 1141 is radially pressed, the pressing protrusion 1144 moves radially, forcing the latch tongue 131 to leave the latch hole 132, thereby releasing the positioning function. A limiting hook 1143 is fixedly provided on the inner wall of the button body 1141, and the middle sleeve 112 is provided with a button limiting opening 1121. The limiting hook 1143 cooperates with the button limiting opening 1121 to limit the radial movement of the button 114, thereby realizing the floating embedding of the button body 1141 and preventing the button 114 from falling off.

[0074] It can be understood that the axial position of the limiting hook 1143 can be flush with the extrusion protrusion 1144 or distributed in high and low positions along the axial direction. The button limiting opening 1121 can be connected to or regarded as shared with the first opening 1321 or the second opening 1322, or the button limiting opening 1121 is separately opened on the middle sleeve 112. In one embodiment, the axial arrangement position of the limiting hook 1143 is flush with the extrusion protrusion 1144, and the button limiting opening 1121 is shared with the first opening 1321. When the button 114 is not pressed, the limiting hook 1143 cooperates with the first opening 1321 to limit, and when the button 114 is pressed, the limiting hook 1143 moves in the inner diameter direction and radially disengages from the button limiting opening 1121.

[0075] Furthermore, the middle sleeve 112 is provided with a socket 1123, and the pin 1142 is inserted into the socket 1123 via the button installation opening 1131, so that the pin 1142 is placed on the edge of the button installation opening 1131. There is at least one pin 1142, preferably two, and there are two sockets 1123 correspondingly.

[0076] Specifically, the radial extension length of the limiting hook 1143 is greater than the extrusion protrusion 1144. The radial length of the extrusion protrusion 1144 is preferably equal to the wall thickness of the middle sleeve 112, so that the extrusion protrusion 1144 can squeeze the tongue 131 out of the bayonet 132. The radial length of the limiting hook is greater than twice the wall thickness of the middle sleeve 112. When the tongue 131 and the bayonet 132 are engaged, the outer diameter of the tongue 131 is flush with the outer diameter of the middle sleeve 112.

[0077] When the inner bottom 12 is in two different working positions, there is a relative displacement between the driving member 111 and the elastic claw 121, which then produces a change in interaction. The present application utilizes the change in the interaction between the two to switch the state of the elastic claw 121. In one embodiment, please refer to Figure 6 , Fig.11 as well as Fig.12 The inner bottom 12 is cup-shaped, and the height of the inner bottom 12 extending along the axial direction is lower than the middle sleeve 112. A through hole 122 is provided at the bottom of the cup, and elastic claws 121 are distributed around the through hole 122. The driving member 111 is columnar, and the driving member 111 extends into the inner bottom 12 through the through hole 122, and radially abuts against the elastic claw 121. The elastic claw 121 expands outward due to the radial compression of the driving member 111, so that the inner wall of the elastic claw 121 is close to the outer wall of the driving member 111. The elastic claw 121 is engaged with the limiting portion 21 of the middle beam core 20, so that the middle beam core 20 is installed on the inner bottom 12 in a locked state, and the inner bottom is in the first working position.

[0078] When the latch tongue 131 is separated from the first latch opening 1321, the axial positioning of the inner bottom 12 and the outer bottom 11 is released, and the elastic claw 121 moves axially relative to the driving member 111. Figure 6In the middle position, the elastic claw 121 moves upward, the radial supporting force of the driving member 111 on the elastic claw 121 is gradually lost, the elastic claw 121 swings radially inward under the action of its own elasticity, the outer diameter surrounded by the elastic claw 121 is gradually reduced, and the insertion between the elastic claw 121 and the limiting portion 21 of the middle bundle core 20 is gradually released to switch to the unlocked state, and the inner bottom enters the second working position.

[0079] In order to facilitate the replacement of the middle bundle core 20, in another embodiment, the inner bottom 12 and the outer bottom 11 are further provided with a compression spring 14 for driving the inner bottom 12 to enter the second working position. In the first working position, the compression spring 14 is in a compressed state. When the latch 131 is disengaged from the first latch 1321, the compression spring 14 drives the inner bottom 12 to move axially relative to the outer bottom 11, that is, the elastic claw 121 moves axially relative to the driving member 111. Specifically, the compression spring 14 is installed at the bottom position of the inner bottom 12 and is sleeved on the outer periphery of the inner bottom 12. The inner bottom 12 is concave to form a groove, the outer diameter of the groove is smaller than the outer diameter of the inner bottom 12, and the outer wall of the groove and the middle sleeve 112 form an accommodating space, please refer to Figure 4 , the space can accommodate the compression spring 14. When there is no compression spring 14, the inner bottom 12 can be driven by manpower to move axially.

[0080] In order to make the elastic claw 121 more sensitive to the relative displacement between the driving member 111, in one embodiment, the elastic claw 121 includes a root 1211 and a claw head 1212, the root 1211 and the claw head 1212 are fixedly connected and are an integral structure, in the first working position, the root 1211 and the claw head 1212 are radially against the driving member 111 to push the claw head 1212 to expand outward into a locked state, in the locked state, the claw head 1212 cooperates with the limiting portion 21 to achieve axial limiting; in the second working position, the claw head 1212 is separated from the driving member 111, and the claw head 1212 is elastically radially retracted, and the claw head 1212 is separated from the limiting portion 21 and enters an unlocked state. It can be understood that changing the radial abutment force or the force application position can achieve the elastic claw 121 to be separated from the limiting portion 21. For example, the driving member 111 itself can achieve radial contraction, and the abutting force of the driving member 111 on the elastic claw 121 can be changed by changing the radial expansion size of the driving member 111.

[0081] In order to ensure the stability of the elastic claw 121 and the limiting portion 21 and avoid accidental loosening, in one embodiment, the number of the elastic claws 121 is multiple, for example, 2 to 4, and each elastic claw 121 is distributed around the driving member 111 and abuts against the outer wall of the driving member 111. The length of the elastic claw 121 extending along the axial direction is approximately one-fifth to one-third of the height of the inner bottom 12. Furthermore, the height of the columnar driving member 111 extending along the axial direction is equal to the height from the top of the elastic claw 121 to the bottom of the inner bottom 12.

[0082] Please refer to Figures 13 to 17In another embodiment, the limiting portion 21 includes a socket 211 opened at the bottom of the middle bundle core 20, and the inner wall of the socket 211 is provided with a limiting step 212. In the locked state, the elastic claw 121 extends into the socket 211 and rests on the limiting step 212. In the unlocked state, the elastic claw 121 is separated from the limiting step 212. Specifically, the limiting step 212 is a boss formed by the inner protrusion of the bottom of the middle bundle core 20, and the socket 211 penetrates the boss. In the axial direction, the limiting step 212 is higher than the bottom of the inner bottom 12, so that the elastic claw 121 can be separated from the limiting portion 21 by changing the position of applying force to the elastic claw 121.

[0083] In the prior art, the middle beam core has different types and structures, but in normal use, one of the components will be relatively fixed to the bottom shell, that is, it will serve as a fixed component. When the bottom shell of the present application cooperates with the middle beam core of different structures, the limiting part can be set on the fixed component to achieve cooperation with the elastic claw.

[0084] In one embodiment, the middle bundle core 20 includes a bead 22, a fork 23, a spiral 24 and a middle bundle 25 from the inside to the outside. The bead 22 is used to carry the lipstick paste, the fork 23 is used to accommodate and guide the axial movement of the bead 22, and the fork 23 and the inner bottom 12 are rotationally limited. A limiting portion 21 is provided at the bottom of the fork 23. The spiral 24 is used to drive the bead 22 to move axially. A spiral is provided on the inner wall of the spiral 24 for rotating with the bead 22, and the spiral 24 is rotatably sleeved on the outer periphery of the fork 23, and the middle bundle 25 is fixedly sleeved on the outer periphery of the spiral 24.

[0085] In this embodiment, when the middle bundle core is in normal use, the fork 23 is used as a fixing component to be fixed relatively to the inner bottom 12 in the bottom shell, wherein:

[0086] In the axial direction, the limiting portion 21 and the elastic claw 121 limit each other;

[0087] In the circumferential direction, mutually cooperating positioning ribs 231 are provided between the outer wall of the fork 23 and the inner wall of the inner bottom 12. The positioning ribs 231 can be provided on the outer wall of the fork 23 and / or the inner wall of the inner bottom 12. Since the positioning ribs 231 extend axially, the insertion and removal of the middle bundle core is not affected during replacement.

[0088] When the packaging tube 100 is used, the outer bottom 11 rotates relative to the middle bundle 25, and the outer bottom 11 drives the fork 23 to rotate, thereby driving the bead 22 to move. The bead 22 is driven by the screw 24 to generate axial movement, thereby rotating the paste.

[0089] The middle bundle core 20 provided in the present application can replace the packaging tube 100, which has at least one of the following effects: the relative fixation and separation of the inner bottom 12 and the outer bottom 11 are achieved through the positioning structure 13, the driving member 111 of the outer bottom 11 acts on the elastic claw 121 of the inner bottom 12, and the elastic claw 121 cooperates with the limiting part 21 to achieve the locking and unlocking between the inner bottom 12 and the middle bundle core 20, so as to achieve the detachable replacement of the middle bundle core 20, and the positioning structure 13 adopts the mode of matching the tongue 131 and the bayonet 132. In addition, the button 114 is used to realize the button 114-style control of the separation of the middle bundle core 20 and the bottom shell 10, and the compression spring 14 is used to provide the driving force for the inner bottom 12 to slide relative to the outer bottom 11.

[0090] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0091] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A button-type replaceable packaging tube, comprising a bottom shell and a middle bundle core installed in the bottom shell, characterized in that: The bottom shell comprises an outer bottom and an inner bottom which are nested and slidably matched with each other, wherein the inner bottom has a first working position and a second working position on the sliding path, and a positioning structure which cooperates with each other to keep the inner bottom in the corresponding working position is provided between the inner bottom and the outer bottom; The positioning structure comprises: A latch tongue, the latch tongue being arranged on the inner bottom and extending radially outwardly along the inner bottom; A bayonet, the bayonet is provided on the outer bottom and cooperates with the bayonet tongue, the bayonet tongue comprises a first bayonet tongue and a second bayonet tongue, the bayonet tongue is correspondingly engaged with the first bayonet tongue or the second bayonet tongue in the first working position or the second working position; The outsole comprises: The middle cover and the outer cover are nested with each other, the inner bottom is slidably installed in the middle cover, and the first bayonet and the second bayonet are both arranged on the middle cover; The outer jacket is also embedded with a button that abuts against the latch tongue, and under the action of the button, the latch tongue is separated from the latch port in which it is located; The inner bottom is provided with an elastic claw, the middle bundle core is detachably inserted in the inner bottom, and the middle bundle core is provided with a limiting portion matched with the elastic claw; The outer sole is provided with a driving member that acts on the elastic claw. Under the action of the driving member, the elastic claw has a locked state in which it is engaged with the limiting portion, and an unlocked state in which the limiting portion is released. When the inner sole switches between different working positions, the driving member acts on the elastic claw accordingly to switch the state. The inner bottom is cup-shaped, a through hole is provided at the bottom of the cup, and the elastic claws are distributed around the through hole; The driving member is columnar and extends into the inner bottom through the through hole, and radially abuts against the elastic claw; The elastic claw moves axially relative to the driving member, and the elastic claw swings radially to switch states.

2. The button-type replaceable packaging tube according to claim 1, characterized in that: The outer cover is provided with a button installation opening, and the middle cover is provided with a button limiting opening; the button comprises: A button body which is radially floating and embedded in the button installation opening; A pin fixed to the button body and placed on the edge of the button mounting opening; A limit hook fixed to the inner wall of the button body and matched with the button limit opening; A pressing protrusion fixed to the inner wall of the button body and abutting against the latch tongue.

3. The button-type replaceable packaging tube according to claim 1, characterized in that: The inner bottom and the outer bottom are also provided with a compression spring for driving the inner bottom to enter the second working position.

4. The button-type replaceable packaging tube according to claim 3, characterized in that: The elastic claw comprises a root and a claw head; In the first working position, the root and the claw head are radially against the driving member to push the claw head to expand outward into a locked state; In the second working position, the claw head is separated from the driving member, and the claw head elastically retracts radially inward to enter an unlocked state.

5. The button-type replaceable packaging tube according to claim 1, characterized in that: There are 2 to 4 elastic claws, each of which is distributed around the driving member and abuts against the outer wall of the driving member.

6. The button-type replaceable packaging tube according to claim 1, characterized in that: The limiting part comprises: An insertion hole is provided at the bottom of the middle bundle core, and a limiting step is provided on the inner wall of the insertion hole. In a locked state, the elastic claw extends into the insertion hole and rests on the limiting step.

7. The button-type replaceable packaging tube according to claim 1, characterized in that: The middle beam core includes, from the inside to the outside: Beads for carrying paste; A fork which is rotationally limited with the inner bottom and is used to accommodate and guide the axial movement of the bead; A spiral rotatably sleeved on the outer periphery of the fork for driving the bead to move axially; A fixed sleeve is arranged on the middle bundle of the spiral outer circumference; The limiting portion is arranged at the bottom of the fork.

Images