Pneumatic multi-valve device and production method

Patent metadata

Field	Value
Publication number	US-10830368-B2
Application number	US-201716094240-A
Country	US
Kind code	B2
Filing date	Feb 3, 2017
Priority date	Apr 18, 2016
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A pneumatic multi-valve device includes a housing (18) having a housing main body (13) with a plurality of electromagnetic valve actuators (1), each having coil elements (2) arranged stationary in the housing (18), a core (4) arranged in the housing (18), and armature elements (15) displaceable along a displacement axis (V) in the housing (18) in relation to a pneumatic connection (12) of the housing (18). Displacement axes (V) of the armature elements (15) are oriented parallel and the pneumatic connections (12) are arranged adjacent to each other. The cores (4) each have a venting bore (5) connected to a venting collection channel (31). The venting collection channel (31) is on the side of the cores (4) facing away from the connection housing side (14), and is bounded on the housing back side (16) by a housing cover (17) fastened to the housing main body (13). The venting collection channel is connected to a venting opening of the housing (18), which venting opening is arranged on a housing side different from the housing back side (16), in particular on the connection housing side (14) having the pneumatic connections (12). The housing cover (17) is fixed to the housing base body (13) via an air-tight welded connection (35), in particular an ultrasonic or laser welded connection.

First claim

The invention claimed is:

1. A pneumatic multi-valve device, comprising a housing ( 18 ), which has a housing main body ( 13 ) with a plurality of electromagnetic valve actuators ( 1 ), each having coil elements ( 2 ) arranged in the housing ( 18 ) in a stationary manner, a core ( 4 ) arranged in the housing ( 18 ), and armature elements ( 15 ), which can be displaced along a displacement axis (V) in the housing ( 18 ) in relation to the core ( 4 ) and in relation to a pneumatic connection ( 12 ) of the housing ( 18 ) in response to energizing of the coil elements ( 2 ), wherein the displacement axes (V) of the armature elements ( 15 ) of the valve actuators ( 1 ) are oriented parallel and the pneumatic connections ( 12 ) associated with the armature elements ( 15 ) are arranged adjacent to each other on a connection housing side ( 14 ), which is spaced apart from a housing back side ( 16 ) facing away therefrom along the displacement axes (V), wherein the cores ( 4 ) each have a venting bore ( 5 ), which is connected, for air conduction, to a venting collection channel ( 31 ) on the side of the cores ( 4 ) facing away from the connection housing side ( 14 ), which venting collection channel is bounded on the housing back side ( 16 ) by a housing cover ( 17 ) fastened to the housing main body ( 13 ), which venting collection channel is connected, for air conduction, to a venting opening of the housing ( 18 ), which venting opening is arranged on a housing side different from the housing back side ( 16 ), in particular on the connection housing side ( 14 ) having the pneumatic connections ( 12 ),
wherein the housing cover ( 17 ) is fixed to the housing base body ( 13 ) via an air-tight welded connection ( 35 ), in particular an ultrasonic or laser welded connection, and wherein the venting collection channel ( 31 ) has a trough ( 20 ), which is formed in the housing base body ( 13 ), the trough opening ( 21 ) of which, which faces in the direction of the housing back side ( 16 ), is closed by the housing cover ( 17 ) and wherein connection channels ( 25 ), which are formed by the housing base body ( 13 ) and which are connected to the venting bores ( 5 ) for air conduction, each lead into the trough ( 20 ) on a trough base ( 27 ), in each case offset at a distance from the trough edge ( 22 ) in the direction of the connection housing side ( 14 ), and a venting channel ( 30 ), which is embodied in the housing body and connects the venting collection channel ( 31 ) to the venting opening ( 34 ) and opens out offset from the trough edge ( 22 ) at a distance in the direction of the connection housing side ( 14 ).

2. The multi-valve device according to claim 1 , wherein the trough opening ( 21 ) is bounded by a circumferential ring collar ( 23 ), which forms the trough edge ( 22 ) and which is embodied monolithically with the housing base body ( 13 ) and on which the housing cover ( 17 ) sits on the front side.

3. The multi-valve device according to claim 2 , wherein the housing cover ( 17 ) is welded to the ring collar ( 23 ).

4. The multi-valve device according to claim 1 , wherein the housing cover ( 17 ) engages across the ring collar ( 23 ) on the outer circumferential side thereof and/or on the inner circumferential side thereof in the direction of the connection housing side ( 14 ).

5. The multi-valve device according to claim 1 , wherein the housing cover ( 17 ) has protuberances, which protrude in the direction of the venting channels ( 30 ), into the connection channels ( 25 ), and which comprise reinforcing ribs ( 32 ) on the back side ( 16 ) of the housing cover ( 17 ).

6. The multi-valve device according to claim 1 , wherein the housing base body ( 13 ) is embodied as monolithic plastic injection molded body, which is produced by overmolding the coil elements ( 2 ).

7. The multi-valve device according to claim 1 , wherein the connection channels ( 25 ) permeate a joint electrical connection plate ( 8 ) for electrically contacting the plurality of coil elements ( 2 ), axially in extension of the displacement axes (V), which is overmolded by the housing base body ( 13 ).

8. The multi-valve device according to claim 1 , wherein, by partial overmolding with the housing base body ( 13 ), the pneumatic connections ( 12 ) are fixed in said housing base body.

9. The multi-valve device according to claim 1 , wherein the armature elements ( 15 ) are in each case guided directly in a coil carrier ( 3 ), which is embodied as plastic injection molded part, of the associated coil elements ( 2 ) in a longitudinally displaceable manner, without interpositioning an armature guide tube.

10. The multi-valve device according to claim 1 , wherein the venting bores ( 5 ), which are centrically arranged in the cores ( 4 ), run axially in a straight line and are parallel among each other and/or wherein a respective working chamber, which can be vented via the corresponding venting bore, is bounded by each armature element and the associated core ( 4 ).

11. The multi-valve device according claim 1 , wherein the venting bores ( 5 ) are connected to the pneumatic connection ( 12 ) and/or a working line via a respective connection line ( 39 ), which in particular leads into the respective working chamber ( 38 ).

12. The multi-valve device according to claim 1 , wherein a venting valve seat ( 37 ), which is associated with the corresponding venting bore ( 5 ), is in each case associated with the armature elements ( 15 ) for closing the respective venting bore ( 5 ) by energizing the coil elements ( 2 ).

13. The multi-valve device according to claim 1 , wherein a working valve seat ( 43 ) in each case is associated with the armature elements ( 15 ) in the area of the pneumatic connection ( 12 ) for opening and closing a connection for air conduction between a pressure supply line and a working line.

14. The multi-valve device according to claim 1 , wherein the housing ( 18 ) is connected via the pneumatic connections ( 12 ) to a distributor plate ( 42 ) having working valve seats ( 43 ) for interacting with the armature elements ( 15 ), at least one pressure supply line and at least one working line.

15. The multi-valve device according to claim 1 , wherein the venting channel ( 30 ) extends parallel to the displacement axes (V).

16. The multi-valve device according to claim 11 , wherein the respective connection line ( 39 ) comprises at least one bore in the respective armature elements ( 15 ) and/or is embodied on the outer circumference of the armature elements ( 15 ).

17. A method for producing a multi-valve device according to claim 1 , wherein a plurality of coil elements ( 2 ) each comprising a core ( 4 ) arranged therein and having a venting bore ( 5 ) is provided, and a housing base body ( 13 ) is produced, in particular by means of overmolding the coil elements ( 2 ), to which a housing cover ( 17 ) for bounding a venting collection channel ( 31 ) is fixed, wherein the housing cover ( 17 ) is welded to the housing base body ( 13 ) by establishing an air-tight welded connection, in particular an ultrasonic or laser welded connection.

18. The method of claim 17 , wherein the housing base body ( 13 ) is monolithic and wherein the connection is established without inter positioning an elastomeric seal.

Assignees

• Eto Magnetic Gmbh

Inventors

• Bruczuk Witold
• Bunio Mariusz
• Zinser Michael

Classifications

• F16K27/029 Primary

  Electromagnetically actuated valves · CPC title

• F16K27/003

  Housing formed from a plurality of the same valve elements · CPC title