# US 12,006,928 B2 · Inflator with motor fixing ring

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,006,928 B2
- Document ID: US12006928B2
- Status: Granted
- Kind: B2
- Application number: 15/733,573
- Filed: 2019-04-17
- Published: 2021-03-11
- Granted: 2024-06-11
- Earliest claimed: 2018-08-16
- Assignees: Dongguan Richtek Electronics Co., Ltd.
- Applicants: Dongguan Richtek Electronics Co., Ltd.
- Inventors: Ken Yang
- Web page: https://patentgrep.com/patent/US12006928B2

## CPC

- F04B 35/04: the means being electric
- F04B 39/066: {Cooling by ventilation}
- F04B 39/121: {Casings}
- F04D 25/06: the pump being electrically driven (F04D25/08 takes precedence)
- F04D 25/0606: {the electric motor being specially adapted for integration in the pump}
- F04D 25/082: {the unit having provision for cooling the motor}
- F04D 29/403: {especially adapted for elastic fluid pumps}
- F04D 29/584: {cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)}
- H02K 9/06: with fans or impellers driven by the machine shaft
- H02K 9/14: wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

An inflator with a motor fixing ring includes a casing, and a core and a motor installed in the casing. The motor is for driving the core to inflate an external object. The inflator further includes a motor fixing ring sheathed on the motor and clamped between the motor and the casing. An air gap is formed between an outer surface of the motor and an inner surface of the casing. During the use of the inflator, the motor fixing ring is sheathed on the motor, and the motor is installed into the casing, so that the motor fixing ring is clamped between the motor and the casing. A cooling fan of the inflator is provided for flowing air along the air gap to dissipate the heat generated by the motor, so as to improve the cooling efficiency of the motor and the performance of the inflator.

## Claims

### Claim 1

An inflator with a motor fixing ring, comprising: a casing, and a core and a motor installed in the casing, and the motor being provided for driving the core to inflate an external object, the motor fixing ring sheathed on the motor and clamped between the motor and the casing, and an air gap is formed between an outer surface of the motor and an inner surface of the casing; and
the motor has a circular blind slot concavely formed on an outer surface of the motor, and the motor fixing ring is received in the circular blind slot; and
the motor has an anti-rotation notch communicating with the circular blind slot, and the motor fixing ring has an anti-rotation plate extending into the anti-rotation notch.

### Claim 2 (depends on 1)

The inflator with a motor fixing ring as claimed in claim 1, wherein the motor fixing ring has a ring body and two lugs, and the two lugs are formed and protruded in opposite directions from both opposite sides of the ring body respectively and disposed on the casing, and the ring body is sheathed on the motor, and an air gap is formed between an outer surface of the ring body and an inner surface of the casing.

### Claim 3 (depends on 1)

The inflator with a motor fixing ring as claimed in claim 1, wherein the motor fixing ring is made of soft plastic.

### Claim 4 (depends on 2)

The inflator with a motor fixing ring as claimed in claim 2, wherein each of the two lugs has a latching blind slot, and the casing has two latching blocks extending into the latching blind slots of the two lugs respectively.