CASING TERMINATION FOR ELECTRONIC CASING AND METHOD FOR ITS MANUFACTURE

Abstract

The invention relates to a casing termination for an electronic casing, particularly sensor casing, with several contact elements for contacting a circuit received in an electronic casing, with a connecting cable having several conductors in each case connected to the contact elements, and with at least one lighting element, particularly a light emitting diode, for providing an optical display for a user. The casing termination is inventively characterized in that the contact elements and lighting element are housed in an at least partly transparent contact display module which, together with an end region of the connecting cable is at least partly surrounded by an at least partly transparent integrally manufactured envelope for mechanical stabilization and electrical insulation purposes and which is connected in tension-proof manner to the contact display module. The invention also relates to a method for the manufacture of a casing termination for an electronic casing.

Description

Further advantages and characteristics of the present invention are explained in greater detail with respect to the attached diagrammatic drawings, wherein show:

FIG. 1 A first embodiment of a casing termination according to the invention.

FIG. 2 A part sectional view of the embodiment of FIG. 1.

FIG. 3 A view of the contact display module of the embodiment of FIG. 1 with a connecting cable.

FIG. 4 A further, part sectional view of the embodiment of FIG. 1.

FIG. 5 Components of a sensor with an inventive casing termination prior to assembly.

FIG. 6 An assembled sensor in a part sectional view with an inventive casing termination.

FIGS. 7 and 8 Perspective views of a contact display module before assembly.

FIG. 9 A perspective view of an alternative embodiment of an inventive casing termination.

FIGS. 10 and 11 Further views of opposite sides of the casing termination of FIG. 9.

FIG. 12 A part sectional view along line A-A in FIG. 11 of the inventive casing termination of FIG. 9.

Claims

1. Casing termination for electronic casing, particularly sensor casing, with several contact elements (22) for contacting a circuit (92) received in electronic casing (70), with a connecting cable (50) having several conductors (52) in each case connected to contact elements (22) andwith at least one lighting element, particularly a light emitting diode (24), for providing an optical display for a user,whereinthe contact elements (22) and lighting element (24) are housed in at least partly transparent contact display module (20) andthe contact display module (20) together with an end region (54) of connecting cable (50) are at least partly surrounded by an at least partly transparent, integrally manufactured envelope (40) for mechanical stabilization and electrical insulation purposes, so that the connecting cable (50) is connected in tension-proof manner to the contact display module (20).

2. Casing termination according to claim 1, wherein the envelope (40) has a larger diameter, casing-near connecting area (42) and a smaller diameter, casing-remote cable extension (44), a transition (46) between connecting area (42) and cable extension (44) being constructed for a tension-proof back-engagement with a casing sleeve (80).

3. Casing termination according to one of the claims 1 or 2, wherein the light emitting diode (24) is inserted in a recess (20) provided in contact display module (20).

4. Casing termination according to claim 3, wherein the recess (26) for light emitting diode (24) is an axial blind hole in contact display module (20).

5. Casing termination according to one of the claims 1 to 4, wherein the contact elements are contact pins (22) and that the contact pins (22) and terminals (25) of light emitting diode (24) extend in the preassembly state in the direction of electronic casing (70).

6. Casing termination according to one of the claims 1 to 5, wherein an air duct (60) is formed in contact display module (20) and/or in envelope (40).

7. Casing termination according to claim 6, wherein a semipermeable element, particularly a felt element, is placed in air duct (60) and which is permeable to air and impermeable to a foaming or casting material to be introduced.

8. Casing termination according to claim 6 or 7, wherein as part of the air duct (60) the contact display module (20) has a blind hole (62) extending in axial direction (10) with a lateral opening (66) at right angles to axial direction (10).

9. Casing termination according to one of the claims 6 to 8, wherein, as part of the air duct (60), the envelope (40) has an outer groove (68) running in axial direction (10) with a connecting opening (64) at right angles to axial direction (10) and which is aligned with the lateral opening (66) of contact display module (20).

10. Casing termination according to one of the claims 1 to 9, wherein the envelope (40) is manufactured by moulding the contact display module (20) and end region (54) of connecting cable (50).

11. Casing termination according to one of the claims 1 to 10, wherein for providing a tension-proof connection to envelope (40), the contact display module (20) has at least one, more particularly circumferential, profiling (28).

12. Casing termination according to one of the claims 1 to 11, wherein the envelope (40) has a plurality of sealing rings (11, 13, 15) for sealing with respect to a casing sleeve (80) to be engaged over a partial area of envelope (40) and that for providing an air duct at least one of the sealing rings (11, 13, 15) is provided with at least one axial opening (41, 43).

13. Casing termination according to claim 12, wherein at least two sealing rings (11, 13) have an axial opening (41, 43), the openings (41, 43) of sealing rings (11, 13) being mutually offset in the circumferential direction and in particular on opposite sides to one another.

14. Sensor module having a casing termination (100) according to one of the claims 1 to 13, with an electronic circuit (92) placed on a printed circuit board (90), the contact pins (22) and terminals of the lighting element, particularly light emitting diode (24), of casing termination (100) being connected, more particularly soldered to the printed circuit board (90) andwith a sensor element (94), particularly a coil with a ferrite element, facing the casing termination (100) on printed circuit board (90).

15. Sensor, particularly proximity switch, with a sensor module (150) according to claim 14, which is inserted in a casing sleeve (80), the latter being closed by a front cap (88) on the opposite side to casing termination (100).

16. Sensor according to claim 15, wherein the casing sleeve (80) is connected in tension-proof manner to casing termination (100) by a flanged edge (82) of casing sleeve (80).

17. Method for the manufacture of a casing termination for an electronic casing, particularly sensor casing, particularly according to one of the claims 1 to 13, in which the conductors (52) of a connecting cable (50) are connected to contact elements (22), particularly contact pins (22), which are received in an at least partly transparent contact display module (20), in which a lighting element, particularly a light emitting diode (24), is inserted in a recess (26) provided for this purpose in contact display module (20) and in which an at least partly transparent, integral envelope (40) is fitted round the contact display module (20) and end region (54) of connecting cable (50) for electrical insulation and mechanical stabilization purposes.

18. Method according to claim 17, wherein the envelope (40) is fitted by moulding the contact display module (20) and end region (54) of connecting cable (50).

19. Method according to one of the claims 17 or 18, wherein an air duct is formed in envelope (40) and/or in the contact display module.