Constant pressure valve for inflatable product and inflatable product

Patent metadata

Field	Value
Publication number	US-11846359-B2
Application number	US-202217954153-A
Country	US
Kind code	B2
Filing date	Sep 27, 2022
Priority date	Mar 28, 2022
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A constant pressure valve for an inflatable product is provided. The constant pressure valve comprises: a housing defining an airflow channel within. A first sealing seat is disposed in the airflow channel and a first through hole is formed in the first sealing seat. An inflation valve core comprises: a first actuating assembly and a first valve head. The first actuating assembly is configured to drive the first valve head to disengage from the first through hole, or to engage with the first through hole in a sealing manner. The constant pressure valve is switchable between an inflation state, in which the first valve head is disengaged from the first through hole, and the airflow channel is unblocked; and a cut-off state in which the first valve head is engaged with the first through hole in a sealing manner, and the airflow channel is blocked by the first valve head.

First claim

What is claimed is:

1. A constant pressure valve comprising:
a housing defining therewithin an airflow channel,
a first sealing seat disposed in the airflow channel and a first through hole formed through the first sealing seat; and
an inflation valve core comprising:
a first actuating assembly comprising:
a first pressure-bearing plate having a first side that faces the airflow channel and a second side opposite the first side:
a first elastic member connected to the second side of the first pressure-bearing plate; and
a first valve stem connected to the first side of the first pressure-bearing plate;
a first valve head,
wherein the first valve head is disposed on the first valve stem; and
wherein, upon action of an inflation pressure, the first pressure-bearing plate moves against a pressure of the first elastic member,
wherein the first actuating assembly is configured to drive the first valve head to disengage from the first through hole, or to engage with the first through hole in a sealing manner,
wherein the constant pressure valve is switchable between an inflation state in which the first valve head is disengaged from the first through hole and the airflow channel is unblocked; and a cut-off state in which the first valve head is engaged with the first through hole in a sealing manner, and the airflow channel is blocked by the first valve head;

a first piston chamber defined within in the housing, wherein the first elastic member is mounted in the first piston chamber, and the first pressure-bearing plate seals the first piston chamber and is reciprocable relative to the first piston chamber in an axial direction of the first piston chamber;
a second sealing seat disposed in the airflow channel in an upstream direction of the first sealing seat, and a second through hole formed through the second sealing seat;
an air intake valve core disposed in the upstream direction of the inflation valve core, the air intake valve core comprising:
a second actuating assembly comprising:
a second pressure-bearing plate having a first side that faces the airflow channel and a second side opposite the first side;
a second elastic member connected to the second side of the second pressure-bearing plate; and
a second valve stem connected to the first side of the second pressure-bearing plate;
and a second valve head;
wherein the second valve head is disposed on the second valve stem; and
wherein, upon action of the inflation pressure, the second pressure-bearing plate moves against a pressure of the second elastic member;

wherein the second actuating assembly is configured to drive the second valve head to disengage from the second through hole, or to engage with the second through hole in a sealing manner;

wherein the constant pressure valve is further switchable into an initial state in which the second valve head is engaged with the second through hole in a sealing manner and the airflow channel is blocked by the second valve head;
wherein in the inflation state, the second valve head is disengaged from the second through hole; and
wherein in the cut-off state, the second valve head is engaged with the second through hole in a sealing manner, and the airflow channel is blocked by the second valve head.

2. The constant pressure valve according to claim 1 , further comprising:
a second piston chamber defined within the housing, wherein the second elastic member is mounted in the second piston chamber, and the second pressure-bearing plate seals the second piston chamber and is reciprocable relative to the second piston chamber in an axial direction of the second piston chamber.

3. The constant pressure valve according to claim 2 , wherein each of the first pressure-bearing plate and the second pressure-bearing plate comprises a flexible member disposed on a circumferential edge thereof, wherein the flexible member is in sealable contact with a sidewall of a corresponding one of the first piston chamber and the second piston chamber.

4. The constant pressure valve according to claim 3 , wherein the flexible member is made of silicone.

5. The constant pressure valve according to claim 1 ,
wherein the first piston chamber comprises therewithin an accommodating cavity accommodating therewithin the first elastic member;
wherein the constant pressure valve further comprises an adjustment end cover which is axially movable and covers an opening of the accommodating cavity; and
wherein the first elastic member abuts against the adjustment end cover.

6. The constant pressure valve according to claim 5 , wherein the adjustment end cover is threaded to the accommodating cavity and is moveable by means of a ratchet mechanism.

7. The constant pressure valve according to claim 1 , wherein:
the first sealing seat is connected to the second sealing seat, thereby forming a barrel;
the first through hole is located in a first end surface of the barrel, and the first valve head extends through the first through hole and into the barrel; and
the second through hole is located in a second end surface of the barrel, and the second valve head is located outside the barrel.

8. An inflatable product, comprising:
a product body,
an inflation port connected to the product body; and
the constant pressure valve, according to any one of claims 1 and 2 - 7 , wherein the airflow channel of the constant pressure valve is connected to the inflation port.

Assignees

• Bestway Inflatables & Mat Corp

Inventors

• Huang Shuiyong

Classifications

• F16K15/202 Primary

  and with flexible valve member · CPC title

• F16K15/1441

  with biasing means in addition to material resiliency, e.g. spring · CPC title

• F16K15/1825

  for check valves with flexible valve members · CPC title

• F16K15/207

  and combined with other valves, e.g. safety valves · CPC title

• F16K17/048

  combined with other safety valves, or with pressure control devices · CPC title