Press button, water tank and ventilation therapy device

Patent metadata

Field	Value
Publication number	US-2026048215-A1
Application number	US-202519366462-A
Country	US
Kind code	A1
Filing date	Oct 22, 2025
Priority date	Apr 25, 2023
Publication date	Feb 19, 2026
Grant date	—

Abstract

Embodiments of this specification provide a press button for mounting and detachment of a water tank from a main unit of a ventilation therapy device. The press button is arranged on the water tank, and is configured to be pressed toward the interior of a water tank housing of the water tank under the action of an external force such that the water tank is mounted to or detached from the main unit. The press button includes a pressing body, the pressing body including a resilient structure, the resilient structure including a fixed end and a free end arranged opposite each other, and the resilient structure being configured such that: when the press button is pressed toward the interior of the water tank housing, the free end moves from a first position to a second position, and the resilient structure elastically deforms; and after the external force is released, the free end moves from the second position to the first position, and the resilient structure restores its shape to drive the press button to resiliently return to its original position away from the interior of the water tank housing such that the water tank is connected to the main unit or returns to its original position after detachment. The embodiments of this specification further provide a water tank including a press button, and a ventilation therapy device including the above water tank.

First claim

1 . A press button for mounting and detachment of a water tank from a main unit of a ventilation therapy device, wherein the press button is arranged on the water tank, and is configured to be pressed toward an interior of a water tank housing of the water tank under the action of an external force such that the water tank is mounted to or detached from the main unit; wherein
the press button comprises a pressing body, the pressing body comprising a resilient structure, the resilient structure comprising a fixed end and a free end arranged opposite the fixed end, and the resilient structure being configured such that: when the press button is pressed toward the interior of the water tank housing, the free end moves from a first position to a second position, and the resilient structure elastically deforms; and after the external force is released, the free end moves from the second position to the first position, and the resilient structure restores its shape to drive the press button to resiliently return to its original position away from the interior of the water tank housing such that the water tank is connected to the main unit or returns to its original position after detachment.

2 . The press button according to claim 1 , wherein the press button further comprises a connecting structure, wherein the connecting structure is arranged at an end of the pressing body close to the main unit, the connecting structure is detachably connected to the main unit, and when the pressing body is pressed toward the interior of the water tank housing, the connecting structure moves toward the interior of the water tank housing and the connecting structure is separated from the main unit.

3 . The press button according to claim 2 , wherein the pressing body comprises a pressing structure, and when the pressing structure is pressed toward the interior of the water tank housing, the connecting structure moves toward the interior of the water tank housing such that the connecting structure is disengaged from an engagement portion of the main unit located above the connecting structure.

4 . The press button according to claim 3 , wherein the connecting structure comprises a connecting member and a snap-fit protrusion, wherein the connecting member is connected to an end of the pressing body, the snap-fit protrusion is arranged at an end of the connecting member away from the pressing body, and the snap-fit protrusion is configured to be engaged with or separated from the engagement portion of the main unit; and the connecting member has a preset length, an inner surface of a housing of the main unit provides the engagement portion, the engagement portion is positioned corresponding to the preset length of the connecting member, and a groove that is engaged with the snap-fit protrusion is provided at the engagement portion.

5 . The press button according to claim 4 , wherein the preset length of the connecting member ranges from 5 mm to 25 mm.

6 . The press button according to claim 3 , wherein the pressing structure is arranged between the free end and the fixed end of the resilient structure.

7 . The press button according to claim 1 , wherein a pressing region of the press button that is acted upon by the external force is located in a middle region of the pressing body in a length direction.

8 . The press button according to claim 3 , wherein the free end of the resilient structure abuts against one of a surface of the water tank housing or a surface of the pressing structure, and the fixed end is fixedly connected to the other of the surface of the water tank housing or the surface of the pressing structure.

9 . The press button according to claim 7 , wherein a stressed center of the resilient structure corresponds to the middle region of the pressing body in the length direction.

10 . The press button according to claim 1 , wherein the resilient structure comprises at least one of an elastic arm and an elastic member;
the elastic arm is configured such that: when the press button is pressed toward the interior of the water tank housing, the free end moves away from the fixed end from the first position to the second position, and the elastic arm elastically deforms; and after the external force is released, the free end moves toward the fixed end from the second position to the first position, and the elastic arm restores its shape; and the elastic member is configured such that: when the press button is pressed toward the interior of the water tank housing, the free end moves from the first position to the second position, and the elastic member has a decrease in height and elastically deforms; and after the external force is released, the free end moves from the second position to the first position, and the elastic member has an increase in height and restores its shape.

11 . The press button according to claim 10 , wherein the fixed end of the elastic arm is fixedly connected to one of a side of the press button close to the interior of the water tank housing or an outer surface of the water tank housing, and the free end of the elastic arm abuts against the other of the side of the press button close to the interior of the water tank housing or the outer surface of the water tank housing, and when the press button is pressed toward the interior of the water tank housing or after the external force is released, the free end slides relative to the other of the side of the press button close to the interior of the water tank housing or the outer surface of the water tank housing.

12 . The press button according to claim 11 , wherein the elastic arm comprises at least one first elastic arm and/or at least one second elastic arm,
a first fixed end of the first elastic arm is fixed to the side of the press button close to the interior of the water tank housing, and a first free end of the first elastic arm abuts against the outer surface of the water tank housing, and when the press button is pressed toward the interior of the water tank housing or the external force is released, and the first free end slides relative to an upper surface of the water tank housing; and a second fixed end of the second elastic arm is fixed to the outer surface of the water tank housing, and a second free end of the second elastic arm abuts against the side of the press button close to the interior of the water tank housing, and when the press button is pressed toward the interior of the water tank housing or after the external force is released, the second free end slides relative to the side of the press button close to the interior of the water tank housing.

13 . The press button according to claim 10 , wherein the fixed end of the elastic member is fixedly connected to one of the side of the press button close to the interior of the water tank housing or the outer surface of the water tank housing, and the free end of the elastic member abuts against the other of the side of the press button close to the interior of the water tank housing or the outer surface of the water tank housing.

14 . The press button according to claim 13 , wherein a connecting protrusion is provided on one of the side of the press button close to the interior of the water tank housing or the outer surface of the water tank housing, and the connecting protrusion is connected to the elastic member.

15 . The press button according to claim 1 , wherein at least one of a limiting structure and a guide structure is further provided between the press button and the outer surface of the water tank housing, wherein
the limiting structure is configured to limit a range of movement

Assignees

• Bmc Medical Co Ltd
• Bmc Tianjin Medical Co Ltd

Inventors

• Zhi Jianxin
• Liu Lijun
• Zhang Jie
• Zhang Jiayin
• Guo Xiaoshuai
• Zhuang Zhi

Classifications

• F16B2/22

  of resilient material, e.g. rubbery material {(F16B2/205 takes precedence)} · CPC title

• F16B1/04

  disengaged by movement of the actuating member of the element (locking of actuators G05G, e.g. G05G5/00) · CPC title

• A61M16/162

  Water-reservoir filling system, e.g. automatic · CPC title

• A61M2205/0216

  Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking · CPC title

• A61M16/0003 Primary

  Accessories therefor, e.g. sensors, vibrators, negative pressure · CPC title