Switch device for an ignition system

Patent metadata

Field	Value
Publication number	US-10840039-B2
Application number	US-201414890992-A
Country	US
Kind code	B2
Filing date	Apr 8, 2014
Priority date	May 20, 2013
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

The present invention relates to a switch device for ignition systems and, more particularly, for use in cooking equipment or heating systems in general, such as to obtain the electrical contact necessary to generate the spark for activating the burner. More preferably, the present invention includes innovative functional and technical aspects capable of promoting the electrical contact necessary to activate the burner, but principally to increase the levels of safety in relation to movement of the controls of cooking equipment/heating equipment, principally in connection with the return movement of said control. Therefore, the present switch device comprises a casing formed by a lower structural body and another, upper structural body, which engage with one another in such a manner as to accommodate, within, flexible contact blades and a rotary core, the structural bodies having contact surfaces provided with at least one projecting portion; furthermore, an axially moveable commutator ring is engaged on said rotary core.

First claim

The invention claimed is:

1. A switch device for an ignition system, the switch device comprising:
a casing including a lower structural body and an upper structural body, which engage with one another;
flexible contact blades and a rotary core, wherein the flexible contact blades and the rotary core are accommodated within the casing; and
an axially moveable commutator ring engaged on said rotary core,
wherein:
the lower structural body has a contact surface provided with at least one projecting portion,
the upper structural body has a contact surface provided with at least one projecting portion,
said flexible contact blades are made from metallic material or another material that conducts electricity, and
the switch device for an ignition system is configured such that the rotary core is axially stationary.

2. The switch device for an ignition system of claim 1 , wherein said contact blades are formed by two-part plates.

3. The switch device for an ignition system of claim 1 , wherein said commutator ring comprises at least one upper protuberant portion and at least one lower protuberant portion that respectively interact with the upper structural body and the lower structural body.

4. The switch device for an ignition system of claim 1 , wherein the at least one projecting portion of the contact surface of the lower structural body and the at least one projecting portion of the contact surface of the upper structural body are components spaced away from respective centers of the lower structural body and the upper structural body.

5. The switch device for an ignition system of claim 1 , wherein the rotary core comprises at least two rails, and the commutator ring has at least two guides.

6. The switch device for an ignition system of claim 1 , wherein the rotary core comprises at least two grooves, and the commutator ring has at least two protrusions respectively extending into the grooves of the at least two grooves.

7. The switch device for an ignition system of claim 5 , wherein the guides and rails fit relative to one another in a male-female relationship.

8. The switch device for an ignition system of claim 5 , wherein said commutator ring comprises at least one upper protuberant portion and at least one lower protuberant portion that respectively interact with the upper structural body and the lower structural body.

9. The switch device for an ignition system of claim 3 , wherein the commutator ring further comprises a protruding member extending away from an axial direction of the commutator ring, and the protuberant portions extend in the axial direction, and wherein the protruding member moves, when the commutator ring is rotated, over the contact blades, and wherein the switch device is configured such that when the switch device is returned from a turned-on positon to a turned off-position, the protruding member is shifted in the axial direction, upward or downward, in relation to a free segment of a contact blade of the flexible contact blades and thus does not generate any spark, because the switch device is configured such that the blades do not lie against one another during the return maneuver.

10. The switch device for an ignition system of claim 6 , wherein the rotary core includes a central aperture configured to enable passage of a gas tap shaft.

11. The switch device for an ignition system of claim 6 , wherein the rotary core includes a central aperture through which extends a gas tap shaft.

12. A switch device for an ignition system, the switch device comprising:
a casing including a lower structural body and an upper structural body, which engage with one another;
flexible contact blades and a rotary core, wherein the flexible contact blades and the rotary core are accommodated within the casing; and
an axially moveable commutator ring engaged on said rotary core,
wherein:
the lower structural body has a contact surface provided with at least one projecting portion,
the upper structural body has a contact surface provided with at least one projecting portion,
said rotary core comprises
a central aperture for a passage of a gas tap shaft, and
rails where guides provided in an internal portion of said commutator ring are engaged, and

said commutator ring comprises at least one upper protuberant portion and at least one lower protuberant portion that respectively interact with the upper structural body and the lower structural body.

13. The switch device for an ignition system of claim 12 , wherein at least one rail of the rails is arranged vertically or on a slant.

14. A switch device for an ignition system, the switch device comprising:
a casing including a lower structural body and an upper structural body, which engage with one another,
flexible contact blades and a rotary core, wherein the flexible contact blades and the rotary core are accommodated within the casing; and
an axially moveable commutator ring engaged on said rotary core,
wherein:
the lower structural body has a contact surface provided with at least one projecting portion,
the upper structural body has a contact surface provided with at least one projecting portion,
the projecting portions interact with the commutator ring,
the commutator ring comprises at least one upper protuberant portion and at least one lower protuberant portion, and
the commutator ring rests on one of the contact surfaces via the lower protuberant portion and is aligned with the other of the contact surfaces via the upper protuberant portion.

15. The switch device for an ignition system of claim 14 , wherein said flexible contact blades are made from metallic material or another material that conducts electricity.

16. The switch device for an ignition system of claim 14 , wherein said rotary core comprises
a central aperture for a passage of a gas tap shaft, and
rails where guides provided in an internal portion of said commutator ring are engaged to enable the commutator ring to move in a direction parallel to an axis of the rotary core.

17. The switch device for an ignition system of claim 14 , wherein said lower structural body includes an aperture, and a component forming a portion of the aperture establishes the contact surface of the lower structural body.

18. The switch device for an ignition system of claim 14 , wherein the lower structural body has a second contact surface separate and distinct from the contact surface provided with the at least one projecting portion, and the second contact surface includes at least one second projecting portion.

19. The switch device for an ignition system of claim 14 , wherein said flexible contact blades are arranged in slots provided in said lower structural body, in said upper structural body, or in both structural bodies.

20. The switch device for an ignition system of claim 15 , wherein the switch device for an ignition system is configured such that the rotary core is axially stationary.

21. The switch device for an ignition system of claim 15 , wherein the switch device for an ignition system is configured such that lateral positions of the rotary core are entirely maintained relative to the rest of the switch device for an ignition system by components on an outside of the rotary core.

22. The switch device for an ignition system of claim 15 , wherein the rotary core includes a central aperture, and wherein the switch device for an ignition system is configured to enable passage of a gas tap shaft through the central apertu

Assignees

• Illinois Tool Works

Inventors

• Cartapatti Flavio Luis

Classifications

• H01H1/36 Primary

  by sliding · CPC title

• H01H19/62

  Contacts actuated by radial cams · CPC title

• F24C3/103

  of electric ignition devices · CPC title

• H01H2201/022

  Material · CPC title

• H01H2231/012

  Household appliance · CPC title