LOW COST, COMPACT, SIDE ENTRY CABLE SEALING FOR IP66 LED OUTDOOR MODULES

• US 20200132290A1
• Filed: 06/14/2018
• Published: 04/30/2020
• Est. Priority Date: 06/19/2017
• Status: Active Application

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Signify Holding B.V. (Signify N.V.)
• Inventors: SISMANIDOU, CHRYSOULA
• Application Number:
  US16/623,840
• Publication Number:
  US 20200132290A1
• Time in Patent Office: Days
• CPC Class Codes: B29C 45/14065 Positioning or centering articles in the mould
• CPC Class Codes: B29C 45/26 Moulds
• CPC Class Codes: B29L 2031/3462 Cables
• CPC Class Codes: F21V 23/001 the elements being electrical wires or cables
• CPC Class Codes: F21V 27/02 Cable inlets
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01B 17/583 Grommets; Bushings
• CPC Class Codes: H01B 19/00 Apparatus or processes specially adapted for manufacturing insulators or insulating bodies manufacture of porcelain for electric insulation C04B33/26
• CPC Class Codes: H01B 7/40 with arrangements for facilitating mounting or securing
• CPC Class Codes: H01R 13/5205 Sealing means between cable and housing, e.g. grommet H01R13/5221 takes precedence
• CPC Class Codes: H01R 13/5845 the strain relief being achieved by molding parts around cable and connections

Abstract

The invention provides a cable grommet element (1) for sealed entry of an electricity cable (100) into a housing (1000), wherein the grommet element (1) comprises a body (200), an engagement element (50), a flexible projection (26), and a cable transit (300), wherein (i) the body (200) comprises a first wall (10), a second wall (20), and a side wall (30) connecting the first wall (10) to the second wall (20); (ii) the engagement element (50) protrudes from the first wall (10) of the body (200), wherein the engagement element (50) comprises an engagement element side wall (51) and an engagement element top part (55), wherein the engagement element side wall (51) comprises a flexible rim (52) configured along a perimeter (59) of the engagement element side wall (51); wherein the engagement element (50) further comprises an alignment portion (56) protruding from the engagement element side wall (51); (iii) the flexible projection (26) protrudes from the second wall (20) of the body (200); and (iv) the cable transit (300) is configured for transit of the electricity cable (100) from the side wall (30) of the body (200) to the engagement element top part (55).

Claims

1. A cable grommet element for sealed entry of an electricity cable into an housing, wherein the grommet element is configured to be physically and/or chemically bound to the electricity cable, wherein the grommet element comprises a body, an engagement element, a flexible projection, and a cable transit, wherein:

the body comprises a first wall, a second wall, and a side wall connecting the first wall to the second wall;

the engagement element protrudes from the first wall of the body, wherein the engagement element comprises an engagement element side wall and an engagement element top part, wherein the engagement element side wall comprises a flexible rim configured along a perimeter of the engagement element side wall;

wherein the engagement element further comprises an alignment portion protruding from the engagement element side wall;

the flexible projection protrudes from the second wall of the body; and

the cable transit is configured for transit of the electricity cable from the side wall of the body to the engagement element top part.

2. The cable grommet element according to claim 1, wherein the cable transit comprises the electricity cable, wherein a first cable end extends from the engagement element top part and the second cable end extends from the side wall of the body.

3. The cable grommet element according to claim 2, wherein the cable grommet element comprises a thermoplastic vulcanized material and wherein the electricity cable comprises a thermoplastic vulcanized material, and wherein the electricity cable is physically and/or chemically bound to the grommet element.

4. The cable grommet element according to claim 1, wherein the cable transit over a length from the side wall of the body to the engagement element top part has a cable transit axis, wherein a first part of the cable transit axis at the engagement element top part and a second part of the cable transit axis at the side wall define a mutual angle (α

) selected from the range of 45-135°

.

5. The cable grommet element according to claim 1, wherein the side wall of the body comprises a flexible protrusion to allow a compression of the body.

6. The cable grommet element according to claim 1, wherein (i) a part of the body comprising the cable transit, (ii) the engagement element, and (iii) the alignment portion together define a hook configuration.

7. The cable grommet element according to claim 1, wherein at least part of the alignment portion comprises a slanted surface, wherein a first shortest distance (d1) between a first location of the slanted surface and the first wall of the body is larger than a second shortest distance (d2) between a second location of the slanted surface and the first wall of the body, wherein the second location protrudes further from the engagement element side wall than the first location.

8. The cable grommet element according to claim 1, wherein the cable grommet element comprises a plurality of flexible projections extending transverse with respect to a second part of the cable transit axis at the side wall and protruding from the second wall of the body, wherein the body comprises a first end of the body and a second end of the body defining a length (L) of the body, and wherein the cable grommet element further comprises a water ingress shield extending transverse to the second part of the cable transit axis and configured at the second end of the body and protruding from the side wall.

9. A housing comprising (i) a cable grommet element according to claim 1 configured in at least part of the housing, wherein the cable transit comprises the electricity cable, (ii) a base top and (iii) a receptor unit, wherein

the base top comprises a base top opening;

the body is arranged in the receptor unit, wherein the engagement element is configured through the base top opening.

10. The housing according to claim 9, further comprising a fixating element, wherein the receptor unit and the fixating element define a first receptor unit opening, wherein the second cable end extends from the first receptor unit opening, wherein the flexible projection resiliently contacts the fixating element and wherein the flexible rim resiliently seals the base top opening.

11. The housing according to claim 10, wherein the cable grommet element comprises the water ingress shield according to claim 8, and wherein the water ingress shield is arranged at a side of the first receptor unit opening.

12. The housing (1000) according to claim 9, further comprising an electrical power consuming or generating element functionally coupled to the first cable end, and a lock-up element sealingly connected to the base top, wherein a sealed space comprising the power consuming or generating element is defined by the base top and lock-up element.

13. The housing according to claim 12, comprising a lighting outdoor module, wherein the electrical power consuming or generating element comprises a lighting device, wherein the lock-up element comprises a light transmissive optical element, and optionally a closure element, and wherein a sealing element sealingly connects the lock-up element and the top base.

14. A method for providing a sealed housing, the method comprising:

providing a cable grommet element according to claim 1, wherein the cable transit comprises the electricity cable;

providing a base top comprising a base top opening and a receptor unit, wherein the base top is configured for holding at least part of the of the grommet element; and

arranging at least part of the engagement element comprising the alignment element through the base top opening, wherein at least part of the body is configured in the receptor unit.

15. A mold for providing a cable grommet element according to claim 1, wherein the mold comprises a cavity configured to receive (i) a part of the electricity cable and (ii) a polymer to be injection molded over the part of the electricity cable, and wherein the cavity comprises a shape that corresponds to the body, the engagement element, and the flexible projection.