Electronic apparatus with an enclosure

• US 20010053065A1
• Filed: 02/20/2001
• Published: 12/20/2001
• Est. Priority Date: 03/01/2000
• Status: Active Grant

• Current Assignee: Endress+Hauser Flowtec AG (Endress+Hauser AG)
• Original Assignee: Endress+Hauser Flowtec AG (Endress+Hauser AG)
• Inventors: Worreth, Bruno, Cudini, Roberto
• Granted Patent: US 6,556,447 B2
• Time in Patent Office: Days
• US Class Current: 361/728
• CPC Class Codes: G01D 11/24 Housings ; Casings for instruments
• CPC Class Codes: H01R 13/527 Flameproof cases H01R13/70 takes precedence

Abstract

The electronic apparatus (1) has an enclosure (10), which has a terminal compartment (12) and an electronics compartment (11). These two compartments are separated by an internal wall (13) which has a longitudinal slot (131) of depth T in which a bushing (14) is fitted. The bushing is to be flameproof designed. To this the enclosure (10) comprises: 1) A baseboard (141) which extends into and is mounted in the electronics compartment, has a stop (142), and can be fitted with electronic components (143); 2) a lead arrangement (144) extending into the terminal compartment (12) and contacting the components on the baseboard; and 3) a plastic part (146) which surrounds the lead arrangement, is formed integrally with the stop (142), and has the shape of, and thus fills, the longitudinal slot (131).

Claims

1. An electronic apparatus with an enclosure

which has a terminal compartment and an electronics compartment,

said terminal compartment being separated from the electronics compartment by an internal wall

which has a longitudinal slot of depth T in which a bushing is fitted, and

which comprises:

a baseboard which extends into and is mounted in the electronics compartment, has a stop, and can be fitted with electronic components;

a lead arrangement extending into the terminal compartment and contacting the components on the baseboard; and

a plastic part which surrounds the lead arrangement, is formed integrally with the stop, and has the shape of, and thus fills, the longitudinal slot.

2. The apparatus as claimed in

claim 1

wherein

the enclosure is located in a hazardous area,

the electronics compartment is designed to comply with the requirements of type of protection Ex-d,

the electronics compartment houses a circuit designed to comply with the requirements of type of protection Ex-d, and

the depth T of the longitudinal slot is at least equal to the gap length specified for type of protection Ex-d as a function of gap width.

3. The apparatus as claimed in

claim 1

wherein the terminal compartment is designed

either to comply with the requirements of type of protection Ex-d

or to comply with the requirements of type of protection Ex-e

or to comply with the requirements of another type of protection

or not to comply with any type of protection.

4. The apparatus as claimed in

claim 2

wherein the terminal compartment is designed

either to comply with the requirements of type of protection Ex-d

or to comply with the requirements of type of protection Ex-e

or to comply with the requirements of another type of protection

or not to comply with any type of protection.

5. The apparatus as claimed in

claim 1

wherein the plastic part and the stop are made of polybutylene terephtalate.

6. The apparatus as claimed in

claim 2

wherein the plastic part and the stop are made of polybutylene terephtalate.

7. The apparatus as claimed in

claim 3

wherein the plastic part and the stop are made of polybutylene terephtalate.

8. The apparatus as claimed in

claim 4

wherein the plastic part and the stop are made of polybutylene terephtalate.