# US 2019/0244489 A1 · Door switch

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- Number: US 2019/0244489 A1
- Document ID: US20190244489A1
- Status: Published application
- Kind: A1
- Application number: 16/190,147
- Filed: 2018-11-14
- Published: 2019-08-08
- Earliest claimed: 2018-02-07
- Assignees: OMRON Corporation
- Applicants: OMRON Corporation
- Inventors: RINA SU; Keishi YAYAMA; Kazuhiro KUDO; Kenji SHIMAZU
- Web page: https://patentgrep.com/patent/US20190244489A1

## CPC

- G08B 5/36: using visible light sources
- G02B 6/0001: {specially adapted for lighting devices or systems (lighting or signalling on vehicles using light guides B60Q1/00; lighting devices for vehicle dashboards B60Q3/10; lighting devices for vehicle interior using light guides B60Q3/62; lighting devices mounted on the vehicle rear part using light guides F21S43/235; measuring arrangements having light conducting pointers G01D13/265; illumination of liquid crystal displays G02F1/1336; illuminated signs G09F13/00)}
- H03K 17/965: Switches controlled by moving an element forming part of the switch
- G08B 13/08: by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
- H03K 2217/958: involving transponders
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M)

## Abstract

The disclosure provides a door switch that improves visibility. The door switch includes an actuator and a sensor. In addition, the door switch is installed so that when a door is closed, a surface of the sensor and an opposite surface of the actuator are in contact with or close to each other, and when the door is open, the surface of the sensor and the opposite surface of the actuator are separated from each other. The actuator outputs a detection signal. A display part for indicating a reception state of the detection signal is formed on the surface of the sensor. The surface of the sensor has a non-opposite region, wherein the non-opposite region is at least a part of the display part not opposite to the opposite surface of the actuator in the reception state.

## Claims

### Claim 1

A door switch comprising an actuator and a sensor, wherein
the door switch is installed so that when a door is closed, a surface of the sensor and an opposite surface of the actuator are in contact with or close to each other, and
when the door is open, the surface of the sensor and the opposite surface of the actuator are separated from each other,
the actuator outputs a detection signal,
a display part for indicating a reception state of the detection signal is formed on the surface of the sensor, and
the surface of the sensor has a non-opposite region, wherein the non-opposite region is at least a part of the display part not opposite to the opposite surface of the actuator in the reception state.

### Claim 2 (depends on 1)

The door switch according to claim 1, wherein the display part is formed annularly along at least an outer edge of the surface of the sensor.

### Claim 3 (depends on 2)

The door switch according to claim 2, wherein the sensor comprises a light source part inside, and the display part guides light of the light source part.

### Claim 4 (depends on 1)

The door switch according to claim 1, wherein the sensor comprises a light source part inside, and the display part guides light of the light source part.

### Claim 5 (depends on 4)

The door switch according to claim 4, wherein the sensor comprises a light guide part for guiding the light of the light source part to the display part.

### Claim 6 (depends on 3)

The door switch according to claim 3, wherein the sensor comprises a light guide part for guiding the light of the light source part to the display part.

### Claim 7 (depends on 4)

The door switch according to claim 4, wherein the sensor comprises, on a display part side of the light source part or the light guide part, a cover part for preventing the light of the light source part from diffusing to outside.

### Claim 8 (depends on 3)

The door switch according to claim 3, wherein the sensor comprises, on a display part side of the light source part or the light guide part, a cover part for preventing the light of the light source part from diffusing to outside.

### Claim 9 (depends on 4)

The door switch according to claim 4, wherein the sensor comprises a reflection part on a back surface side of the cover part.

### Claim 10 (depends on 3)

The door switch according to claim 3, wherein the sensor comprises a reflection part on a back surface side of the cover part.

### Claim 11 (depends on 1)

The door switch according to claim 1, wherein the display part is made of a resin.

### Claim 12 (depends on 7)

The door switch according to claim 7, wherein the cover part is made of a resin.

### Claim 13 (depends on 8)

The door switch according to claim 8, wherein the cover part is made of a resin.

### Claim 14 (depends on 9)

The door switch according to claim 9, wherein the cover part is made of a resin.

### Claim 15 (depends on 10)

The door switch according to claim 10, wherein the cover part is made of a resin.