Pressing type replaceable vacuum bottle

Abstract

The utility model relates to a press type replaceable vacuum bottle which comprises an outer bottle, a shoulder sleeve, an inner bottle and a pump core assembly, the detachable shoulder sleeve is arranged at the top of the outer bottle, the pump core assembly capable of being connected to the shoulder sleeve in a driving mode is arranged at the bottom of the shoulder sleeve, and the detachable inner bottle is further arranged at the bottom of the pump core assembly. In addition, a pressing sleeve which can move up and down relative to the outer bottle and can be arranged at the bottom of the inner bottle in a sleeving mode is arranged at the bottom of the outer bottle, the inner bottle can move upwards by pressing the pressing sleeve, and the pump core assembly is synchronously driven to move towards the shoulder sleeve. Therefore, the pump core assembly can drive the liquid in the inner bottle to be conveyed to the liquid outlet of the shoulder sleeve to achieve liquid discharging, and in the using process of a consumer, the liquid is smeared on the body after the liquid outlet is directly aligned with the skin by pressing the pressing sleeve with one hand and inverting the whole vacuum bottle. Besides, the outer bottle and the shoulder sleeve are detachably arranged, so that the pump core assembly and the inner bottle can be moved out of the first opening in the top of the outer bottle at the same time, and a consumer can conveniently replace the inner bottle at any time.

Description

Technical Field

[0001] The utility model relates to the technical field of lotion bottles, in particular to a press-type replacement vacuum bottle. Background Art

[0002] As people's living standards improve, their demand for cosmetics is also increasing. A wide variety of cosmetics with different packaging have appeared on the market. Among them, bottled cosmetics are even more numerous, and most of the cosmetic bottles of bottled cosmetics on the market are disposable items. When the liquid or lotion inside is exhausted, the entire cosmetic bottle is directly discarded, which causes great waste and pollution. In order to solve the above problems, some manufacturers are currently developing some replaceable lotion bottles, which can replace the inner bottle containing the contents separately, so that the outer bottle and pump core components can be reused.

[0003] For example, the Chinese utility model patent "A cosmetic vacuum bottle with easy replacement of the inner bottle" with application number 202020638328.7 (authorization announcement number CN211996924U) discloses such a structure with replaceable inner bottle, which includes a mounting bracket, the bottom of which is threadedly connected with an outer bottle and an inner bottle, the inner bottle is placed in the inner cavity of the outer bottle, and a spray head device is installed on the mounting bracket. The spray head device includes a pressing head cap, a valve stem and a blind cover. The pressing head cap is installed on the valve stem, and the blind cover is mounted on the valve stem. When the inner bottle needs to be removed, the outer bottle is first unscrewed from the mounting bracket, and then the inner bottle is unscrewed from the mounting bracket for replacement.

[0004] However, the lotion bottle with such a structure for replacement and disassembly has certain shortcomings: during the use of the lotion bottle, consumers generally discharge liquid by pressing the push cap arranged on the top of the pump core assembly. Due to the limitation of the head structure of the push cap, in order to prevent the push cap from affecting the discharge of liquid from its liquid outlet when being pressed, the liquid outlet is generally arranged on the side of the push cap. As a result, consumers often need to use both hands to complete the liquid extraction operation process during daily use. One hand is used to drive the push cap to press down, and the other hand is used to receive the liquid from the liquid outlet arranged on the side of the push cap before applying it on the body. It is impossible to apply the liquid directly on the body by single-handed operation, which brings certain troubles to daily use.

[0005] Therefore, how to provide a lotion bottle that can achieve rapid liquid discharge without setting a push cap on the top of the pump core assembly, can directly apply the liquid to the body by pressing with one hand, and can also achieve rapid replacement of the inner bottle, is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a push-type replacement vacuum bottle which can achieve rapid liquid discharge without providing a push cap on the top of the pump core assembly, can directly apply the liquid on the body by pressing with one hand, and can also achieve rapid replacement of the inner bottle.

[0007] The technical solution adopted by the utility model to solve the above technical problems is: a press-type replaceable vacuum bottle, comprising an outer bottle, a shoulder sleeve, an inner bottle and a pump core assembly, the shoulder sleeve being detachably connected to the top of the outer bottle and having a liquid outlet, the inner bottle being detachably connected to the bottom of the pump core assembly, the top of the outer bottle being provided with a first opening, the inner bottle being able to enter the interior of the outer bottle from the first opening of the outer bottle, and also being able to move outward from the first opening of the outer bottle, the pump core assembly being drivingly connected to the interior of the shoulder sleeve and being able to conduct the liquid outlet, the bottom of the outer bottle being further provided with a pressing sleeve which can move up and down relative to the outer bottle and can be sleeved on the bottom of the inner bottle, the inner bottle being able to move up and down by pressing the pressing sleeve and synchronously driving the pump core assembly to move toward the direction of the shoulder sleeve, so that the pump core assembly can drive the liquid in the inner bottle to be transported to the liquid outlet of the shoulder sleeve to realize liquid discharge.

[0008] In order to better realize disassembly or connection between the shoulder sleeve and the outer bottle, preferably, a connecting wall which can extend into the first opening is formed at the bottom of the shoulder sleeve, and the connecting wall and the outer bottle are locked together by setting a detachable structure, and the detachable structure includes a clamping block arranged on the connecting wall and a clamping groove arranged on the inner side wall of the outer bottle for clamping and locking the clamping block.

[0009] In order to make the clamping block slide to the clamping groove more conveniently, preferably, the clamping groove comprises a first step surface formed on the inner wall edge of the first opening of the outer bottle and in an annular shape, and a locking groove formed on the inner wall of the outer bottle opening and extending in the circumferential direction, and a guide area capable of guiding the clamping block to the locking groove is also connected between the first step surface and the locking groove;

[0010] When the connecting wall of the shoulder sleeve enters the outer bottle from the first opening of the outer bottle, the clamping block can be matched on the first step surface, and can slide from the first step surface to the locking groove under the guidance of the guide area during the relative rotation of the shoulder sleeve and the outer bottle, so that the shoulder sleeve is locked on the outer bottle.

[0011] In order to facilitate the pressing up and down of the pressing sleeve, preferably, a second opening is also opened at the bottom of the outer bottle, and the pressing sleeve enters the outer bottle from the second opening and is sleeved on the bottom of the inner bottle. A flange is also formed circumferentially at the edge of the second opening, and a limit ring is convexly provided on the outer peripheral wall of the pressing sleeve, which is adapted to the flange and is used to limit the pressing sleeve from falling off downward.

[0012] In order to enable the pressing sleeve to be locked or unlocked during the process of pressing up and down, preferably, a vertically extending guide portion is formed on the inner side wall of the outer bottle, and the side wall of the pressing sleeve is penetrated by a guide groove for the guide portion to move up and down and a locking groove circumferentially connected to the guide groove for limiting the upward movement of the guide portion; when the guide portion is rotated circumferentially to the locking groove, the locking groove can resist the guide portion to prevent the pressing sleeve from moving upward under the drive of external force, so that the pump core assembly can only transport liquid on demand.

[0013] In order to make the pressing sleeve in the locked state more stable, preferably, a limiting portion is further provided in the locking groove for preventing the guide portion from sliding into the guide groove by itself without the action of external force. Correspondingly, a guiding inclined surface that can be adapted to the limiting portion is provided on the guiding portion. When the outer bottle and the pressing sleeve are relatively rotated to the locked state, the guiding inclined surface can resist the limiting portion to form a limit between the outer bottle and the pressing sleeve. By rotating the pressing sleeve in the opposite direction, the guiding inclined surface can squeeze the limiting portion to make the guide portion slide back into the guide groove to complete the unlocking.

[0014] In order to optimize the structure of the shoulder sleeve so that the liquid in the inner bottle can be better transported to the liquid outlet, preferably, the outer wall of the shoulder sleeve is also formed with an annular cover curtain along the circumferential direction. When the shoulder sleeve is in a locked state, the cover curtain can be placed on the top edge of the outer bottle. The liquid outlet is arranged at the top of the shoulder sleeve, and the interior of the shoulder sleeve also has a connecting tube extending downward for the pump core assembly to be plugged in. The pump core assembly is connected to the liquid outlet through the connecting tube.

[0015] In order to optimize the overall structure of the pump core assembly, so that the pump core assembly can better connect the shoulder sleeve and the inner bottle, and enable it to better transport liquid to the liquid outlet on the shoulder sleeve, preferably, the pump core assembly includes a pump core and a large ring, the pump core is installed on the large ring and is driven to be connected to the shoulder sleeve from bottom to top, the inner bottle is provided with an external thread, and the large ring is provided with an internal thread adapted to the external thread, and the inner bottle and the pump core assembly can be detachably connected together through the threaded connection of the external thread and the internal thread, and a limiting device is also provided between the inner bottle and the large ring, which is limited and locked when the inner bottle is rotated to a tightened state.

[0016] In order to keep track of the liquid level in the inner bottle at all times, preferably, the outer bottle is further provided with an observation hole penetrating the side wall for convenient observation of the inner bottle, and the observation hole is arranged in a strip shape along the length direction of the outer bottle.

[0017] In order to prevent the liquid outlet from being exposed to the outside and being contaminated by the outside, preferably, a bottle cap is also included to prevent the liquid outlet of the shoulder sleeve from being exposed. The bottle cap can be plugged and unplugged on the outer wall of the shoulder sleeve, and a dust plug inserted in the liquid outlet is also provided in the bottle cap.

[0018] Compared with the prior art, the utility model has the advantages that: a detachable shoulder sleeve is provided at the top of the outer bottle, a pump core assembly that can be driven and connected to the shoulder sleeve is provided at the bottom of the shoulder sleeve, and an inner bottle that can be easily detached is provided at the bottom of the pump core assembly, wherein the inner bottle can enter the inner part of the outer bottle from the first opening of the outer bottle, and can also be moved outward from the first opening of the outer bottle, and a pressing sleeve that can move up and down relative to the outer bottle and can be sleeved on the bottom of the inner bottle is provided at the bottom of the outer bottle, and the inner bottle can be moved up and down by pressing the pressing sleeve, and the pump core assembly can be driven to move toward the shoulder sleeve, so that the pump core assembly can drive the liquid in the inner bottle to be transported to the liquid outlet of the shoulder sleeve to realize liquid discharge, and during use, the consumer only needs to press the pressing sleeve with one hand, and then apply it on the body by inverting the entire vacuum bottle so that the liquid outlet is directly aimed at the skin. In addition, through the detachable arrangement between the outer bottle and the shoulder sleeve, the pump core assembly and the inner bottle can be simultaneously removed from the first opening at the top of the outer bottle, so that the consumer can conveniently replace the inner bottle at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural diagram of this embodiment;

[0020] Figure 2 is a three-dimensional structural diagram of this embodiment from another angle;

[0021] Figure 3 This is a schematic diagram of the structure of the decomposed state of this embodiment;

[0022] Figure 4 This is a schematic diagram of the exploded state structure of this embodiment from another angle;

[0023] Figure 5 This is a schematic diagram of the longitudinal cross-sectional structure of this embodiment;

[0024] Figure 6 It is a three-dimensional structural diagram after the bottle cap is closed in this embodiment. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] Figures 1 to 6 What is shown is a schematic diagram of this embodiment. The push-type replaceable vacuum bottle in this embodiment mainly includes an outer bottle 1, a shoulder sleeve 2, an inner bottle 3, a pump core assembly 4 and a push sleeve 5, etc.

[0027] refer to Figures 1 to 5As shown, in this embodiment, the shoulder sleeve 2 is detachably connected to the top of the outer bottle 1 and has a liquid outlet 2a, the inner bottle 3 is detachably connected to the bottom of the pump core assembly 4, the top of the outer bottle 1 is provided with a first opening 1a, the inner bottle 3 can enter the outer bottle 1 from the first opening 1a of the outer bottle 1, and can also move outward from the first opening 1a of the outer bottle 1, the pump core assembly 4 is drivingly connected to the inside of the shoulder sleeve 2 and can conduct the liquid outlet 2a, and the bottom of the outer bottle 1 is also provided with a pressing sleeve 5 that can move up and down relative to the outer bottle 1 and can be sleeved on the bottom of the inner bottle 3, by pressing the pressing sleeve 5, the inner bottle 3 can be moved up and the pump core assembly 4 can be synchronously driven to move toward the direction of the shoulder sleeve 2, so that the pump core assembly 4 can drive the liquid in the inner bottle 3 to be transported to the liquid outlet 2a of the shoulder sleeve 2 to achieve liquid discharge.

[0028] Among them, in order to better realize the disassembly or connection between the shoulder cover 2 and the outer bottle 1, refer to Figures 3 to 5 As shown, in this embodiment, a connecting wall 2b that can extend into the first opening 1a is formed at the bottom of the shoulder sleeve 2, and the connecting wall 2b and the outer bottle 1 are locked together by setting a detachable structure 6. The detachable structure 6 includes a snap-fit ​​block 6a arranged on the connecting wall 2b and a snap-fit ​​groove 6b arranged on the inner wall of the outer bottle 1 for the snap-fit ​​block 6a to be snapped and locked.

[0029] Secondly, in order to make the clamping block 6a slide to the clamping groove 6b more conveniently, refer to Figure 1 As shown, the engaging groove 6b in this embodiment includes a first step surface 6b1 formed on the inner wall edge of the first opening 1a of the outer bottle 1 and in an annular shape, and a locking groove 6b2 formed on the inner wall of the opening of the outer bottle 1 and extending in the circumferential direction, and a guide area 6b3 capable of guiding the engaging block 6a to the locking groove 6b2 is also connected between the first step surface 6b1 and the locking groove 6b2; when the connecting wall 2b of the shoulder sleeve 2 enters the outer bottle 1 from the first opening 1a of the outer bottle 1, the engaging block 6a can be matched on the first step surface 6b1, and can slide from the first step surface 6b1 to the locking groove 6b2 under the guiding action of the guide area 6b3 during the relative rotation of the shoulder sleeve 2 and the outer bottle 1, so that the shoulder sleeve 2 is locked on the outer bottle 1.

[0030] Also, in order to facilitate the pressing sleeve 5 to press up and down, refer to Figures 3 to 5 As shown, in this embodiment, a second opening 1b is further provided at the bottom of the outer bottle 1. The pressing sleeve 5 enters the outer bottle 1 from the second opening 1b and is sleeved on the bottom of the inner bottle 3. A flange 1b1 is also formed circumferentially at the edge of the second opening 1b. An adapting flange 1b1 is convexly provided on the outer peripheral wall of the pressing sleeve 5 to form a limit ring 5a for limiting the pressing sleeve 5 from falling off downward.

[0031] At the same time, in order to make the pressing sleeve 5 better locked or unlocked during the process of pressing up and down, refer to Figure 4As shown, in this embodiment, a vertically extending guide portion 1c is formed on the inner wall of the outer bottle 1, and a guide groove 5b for the guide portion 1c to move up and down and a locking groove 5c circumferentially connected to the guide groove 5b for limiting the upward movement of the guide portion 1c are penetrated on the side wall of the pressing sleeve 5. When the guide portion 1c rotates circumferentially to the locking groove 5c, the locking groove 5c can resist the guide portion 1c to prevent the pressing sleeve 5 from moving upward under the drive of external force, so that the pump core assembly 4 can only transport liquid on demand.

[0032] In addition, in order to make the pressing sleeve 5 in the locked state more stable, refer to Figure 4 As shown, in this embodiment, a limiting portion 5c1 is further provided in the locking groove 5c for preventing the guide portion 1c from sliding down to the guide groove 5b by itself without the action of external force. Correspondingly, a guiding inclined surface 1c1 which can be adapted to the limiting portion 5c1 is provided on the guide portion 1c. When the outer bottle 1 and the pressing sleeve 5 are relatively rotated to a locked state, the guiding inclined surface 1c1 can resist the limiting portion 5c1 to form a limit between the outer bottle 1 and the pressing sleeve 5. By rotating the pressing sleeve 5 in the reverse direction, the guiding inclined surface 1c1 can squeeze the limiting portion 5c1 to make the guide portion 1c slide back into the guide groove 5b to complete the unlocking.

[0033] refer to Figure 3 and Figure 5 As shown, in the present embodiment, in order to optimize the structure of the shoulder sleeve 2 so that the liquid in the inner bottle 3 can be better transported to the liquid outlet 2a, an annular cover curtain 2c is formed circumferentially on the outer wall of the shoulder sleeve 2. When the shoulder sleeve 2 is in a locked state, the cover curtain 2c can be placed on the top edge of the outer bottle 1, and the liquid outlet 2a is arranged at the top of the shoulder sleeve 2. The interior of the shoulder sleeve 2 also has a connecting pipe 2d extending downward for the pump core assembly 4 to be plugged in. The pump core assembly 4 is connected to the liquid outlet 2a through the connecting pipe 2d.

[0034] refer to Figures 3 to 5 As shown, in the present embodiment, in order to optimize the overall structure of the pump core assembly 4, so that the pump core assembly 4 can better connect the shoulder sleeve 2 and the inner bottle 3, and the pump core assembly 4 can better transport the liquid to the liquid outlet 2a on the shoulder sleeve 2, the pump core assembly 4 here includes a pump core 4a and a large circle 4b, the pump core 4a is installed on the large circle 4b and is driven to be connected to the shoulder sleeve 2 from bottom to top, the inner bottle 3 is provided with an external thread 3a, and the large circle 4b is provided with an internal thread 4b1 adapted to the external thread 3a, and the inner bottle 3 and the pump core assembly 4 can be detachably connected together through the threaded connection of the external thread 3a and the internal thread 4b1, and a limiting device 3b is also provided between the inner bottle 3 and the large circle 4b, which is limited and locked when the inner bottle 3 is rotated to a tightened state.

[0035] In this embodiment, in order to always know the liquid level in the inner bottle 2, refer to Figure 1As shown, the outer bottle 1 is also provided with an observation hole 1d penetrating the side wall for convenient observation of the inner bottle 3. The observation hole 1d is arranged in a strip shape along the length direction of the outer bottle 1, and the liquid level in the inner bottle 3 can be observed at all times through the observation hole 1d.

[0036] In this embodiment, in order to prevent the liquid outlet 2a from being exposed to the outside and thus contaminated by the outside, Figure 5 and Figure 6 As shown, a bottle cap 7 is specially provided to prevent the liquid outlet 2a of the shoulder sleeve 2 from being exposed. The bottle cap 7 is pluggably sleeved on the outer wall of the shoulder sleeve 2, and a dust plug 7a is also provided inside the bottle cap 7 and is inserted into the liquid outlet 2a.

[0037] It is necessary to explain additionally here that in the present embodiment, a detachable shoulder sleeve 2 is provided on the top of the outer bottle 1, and a pump core assembly 4 which can be driven and connected to the shoulder sleeve 2 is provided at the bottom of the shoulder sleeve 2, and an inner bottle 3 which can be easily detached is provided at the bottom of the pump core assembly 4. Here, the inner bottle 3 can enter the inner part of the outer bottle 1 from the first opening 1a of the outer bottle 1, and can also be moved outward from the first opening 1a of the outer bottle 1. In addition, a pressing sleeve 5 which can move up and down relative to the outer bottle and can be sleeved on the bottom of the inner bottle 3 is provided at the bottom of the outer bottle 1. By pressing the pressing sleeve 5, the inner bottle 3 can be moved up and the pump core assembly 4 can be simultaneously driven to move toward the direction of the shoulder sleeve 2, so that the pump core assembly 4 can drive the liquid in the inner bottle 3 to be transported to the liquid outlet 2a of the shoulder sleeve 2 to realize liquid discharge. During use, the consumer only needs to press the pressing sleeve 5 with one hand, and then apply it on the body by turning the entire vacuum bottle upside down so that the liquid outlet 2a is directly aimed at the skin. In addition, through the detachable arrangement between the outer bottle 1 and the shoulder sleeve 2, the pump core assembly 4 and the inner bottle 3 can be simultaneously removed from the first opening 1a at the top of the outer bottle 1, so that consumers can conveniently replace the inner bottle 3 at any time, and at the same time, the vacuum bottle has the advantages of simple and compact structure and easy use.

[0038] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A push-type replacement vacuum bottle, comprising an outer bottle (1), a shoulder sleeve (2), an inner bottle (3) and a pump core assembly (4), characterized in that: The shoulder sleeve (2) is detachably connected to the top of the outer bottle (1) and has a liquid outlet (2a); the inner bottle (3) is detachably connected to the bottom of the pump core assembly (4); the top of the outer bottle (1) is provided with a first opening (1a); the inner bottle (3) can enter the outer bottle (1) from the first opening (1a) of the outer bottle (1) and can also be moved outward from the first opening (1a) of the outer bottle (1); the pump core assembly (4) is drivably connected to the shoulder sleeve The outer bottle (2) is provided with a pressing sleeve (5) at the bottom thereof, which can move up and down relative to the outer bottle (1) and can be sleeved on the bottom of the inner bottle (3). By pressing the pressing sleeve (5), the inner bottle (3) can be moved upward and the pump core assembly (4) can be driven to move toward the shoulder sleeve (2) at the same time, so that the pump core assembly (4) can drive the liquid in the inner bottle (3) to be transported to the liquid outlet (2a) of the shoulder sleeve (2) to realize liquid discharge.

2. The push-type replacement vacuum bottle according to claim 1, characterized in that: The bottom of the shoulder sleeve (2) is formed with a connecting wall (2b) that can extend into the first opening (1a); the connecting wall (2b) and the outer bottle (1) are locked together by providing a detachable structure (6); the detachable structure (6) comprises a clamping block (6a) provided on the connecting wall (2b) and a clamping groove (6b) provided on the inner side wall of the outer bottle (1) for clamping and locking the clamping block (6a).

3. The push-type replacement vacuum bottle according to claim 2, characterized in that: The clamping groove (6b) comprises a first step surface (6b1) formed on the inner wall edge of the first opening (1a) of the outer bottle (1) and in an annular shape, and a locking groove (6b2) formed on the inner wall of the opening of the outer bottle (1) and extending in the circumferential direction, and a guide area (6b3) capable of guiding the clamping block (6a) to the locking groove (6b2) is also connected between the first step surface (6b1) and the locking groove (6b2); When the connecting wall (2b) of the shoulder sleeve (2) enters the outer bottle (1) from the first opening (1a) of the outer bottle (1), the clamping block (6a) can be matched on the first step surface (6b1), and can slide from the first step surface (6b1) to the locking groove (6b2) under the guidance of the guide area (6b3) during the relative rotation of the shoulder sleeve (2) and the outer bottle (1), so that the shoulder sleeve (2) is locked on the outer bottle (1).

4. The push-type replaceable vacuum bottle according to any one of claims 1 to 3, characterized in that: The outer bottle (1) is also provided with a second opening (1b) at the bottom thereof. The pressing sleeve (5) enters the outer bottle (1) from the second opening (1b) and is then sleeved on the bottom of the inner bottle (3). A flange (1b1) is also formed along the circumferential direction at the edge of the second opening (1b). A limit ring (5a) adapted to the flange (1b1) for limiting the downward fall of the pressing sleeve (5) is convexly provided on the outer peripheral wall thereof.

5. The push-type replacement vacuum bottle according to claim 4, characterized in that: A vertically extending guide portion (1c) is formed on the inner side wall of the outer bottle (1), and a guide groove (5b) for allowing the guide portion (1c) to move up and down and a locking groove (5c) circumferentially connected to the guide groove (5b) for limiting the upward movement of the guide portion (1c) are formed on the side wall of the pressing sleeve (5). When the guide portion (1c) rotates circumferentially to the locking groove (5c), the locking groove (5c) can resist the guide portion (1c) to prevent the pressing sleeve (5) from moving upward under the drive of an external force, so that the pump core assembly (4) can only deliver liquid on demand.

6. The push-type replacement vacuum bottle according to claim 5, characterized in that: The locking groove (5c) is also provided with a limiting portion (5c1) for preventing the guide portion (1c) from sliding down to the guide groove (5b) without the action of external force. Correspondingly, the guide portion (1c) is provided with a guiding inclined surface (1c1) that can be adapted to the limiting portion (5c1). When the outer bottle (1) and the pressing sleeve (5) are relatively rotated to a locked state, the guiding inclined surface (1c1) can resist the limiting portion (5c1) to form a limit between the outer bottle (1) and the pressing sleeve (5). By rotating the pressing sleeve (5) in the opposite direction, the guiding inclined surface (1c1) can press the limiting portion (5c1) to make the guide portion (1c) slide back into the guide groove (5b) to complete unlocking.

7. The push-type replacement vacuum bottle according to claim 1, characterized in that: The outer wall of the shoulder sleeve (2) is also formed with an annular cover curtain (2c) along the circumferential direction. When the shoulder sleeve (2) is in a locked state, the cover curtain (2c) can be placed on the top edge of the outer bottle (1). The liquid outlet (2a) is arranged at the top of the shoulder sleeve (2). The interior of the shoulder sleeve (2) also has a connecting pipe (2d) extending downward for the pump core assembly (4) to be plugged in. The pump core assembly (4) is connected to the liquid outlet (2a) through the connecting pipe (2d).

8. The push-type replacement vacuum bottle according to claim 1, characterized in that: The pump core assembly (4) comprises a pump core (4a) and a large ring (4b), wherein the pump core (4a) is mounted on the large ring (4b) and is driven to be connected to the shoulder sleeve (2) from bottom to top, the inner bottle (3) is provided with an external thread (3a), and the large ring (4b) is provided with an internal thread (4b1) adapted to the external thread (3a), and the inner bottle (3) and the pump core assembly (4) are detachably connected together through the threaded connection of the external thread (3a) and the internal thread (4b1), and a limiting device (3b) is also provided between the inner bottle (3) and the large ring (4b) and is limited and locked when the inner bottle (3) is rotated to a tightened state.

9. The push-type replacement vacuum bottle according to claim 1, characterized in that: The outer bottle (1) is also provided with an observation hole (1d) penetrating the side wall for convenient observation of the inner bottle (3); the observation hole (1d) is arranged in a strip shape along the length direction of the outer bottle (1).

10. The push-type replacement vacuum bottle according to claim 1, characterized in that: The invention also comprises a bottle cap (7) for preventing the liquid outlet (2a) of the shoulder sleeve (2) from being exposed. The bottle cap (7) is pluggably mounted on the outer wall of the shoulder sleeve (2). A dust plug (7a) is also arranged inside the bottle cap (7) and is inserted into the liquid outlet (2a).

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