Process for assembly of an electric pump, and a vibration damper for such a pump

• US 20040005227A1
• Filed: 04/29/2003
• Published: 01/08/2004
• Est. Priority Date: 06/21/2002
• Status: Active Grant

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Cremer, Hugues, Hillard, Christian Gerard
• Granted Patent: US 7,025,574 B2
• Time in Patent Office: Days
• US Class Current: 417/360
• CPC Class Codes: F02M 37/103 Mounting pumps on fuel tanks
• CPC Class Codes: F02M 37/44 Filters structurally associated with pumps
• CPC Class Codes: F02M 37/50 Filters arranged in or on fuel tanks

Abstract

Process for assembly of an electric pump, comprising the following phases: (a) a pump proper (1) is formed including a pump body (2) provided with an induction orifice (3), a delivery orifice (4) and electrical terminals (5, 6) to supply it with energy; (b) a cage (7) is arranged around the said pump body (2); (c) a filtering element (15) is fixed to one of the ends of the said pump body (2) by connecting it to the said cage (7) so that the said induction orifice (3) communicates with the said filtering element (15); and (d) the assembly thus obtained is introduced into a pump casing (17) and they are connected one to the other; characterised in that, after phase (c) and before phase (d), a tubular vibration damping element (16) is arranged on the said cage (7), the said tubular element (16) also forming a sole connection organ between the said cage (7) and the said pump casing (17).

Claims

1. Process for assembly of an electric pump, comprising the following phases:

(a) a pump proper (1) is formed including a pump body (2) provided with an induction orifice (3), a delivery orifice (4) and electrical terminals (5, 6) to supply it with energy;

(b) a cage (7) is arranged around the said pump body (2);

(c) a filtering element (15) is fixed to one of the ends of the said pump body (2) by connecting it to the said cage (7) so that the said induction orifice (3) communicates with the said filtering element (15); and

(d) the assembly thus obtained is introduced into a pump casing (17) and they are connected one to the other;

characterised in that, after phase (c) and before phase (d), a tubular vibration damping element (16) is arranged on the said cage (7), the said tubular element (16) also forming a sole connection organ between the said cage (7) and the said pump casing (17).

2. Assembly process as claimed in claim 1, characterised in that the said damping element (16) is locked for rotation on the said cage (7).

3. Assembly process as claimed in claim 1 or 2, characterised in that the said damping element (16) is connected to the said pump casing (17) by snap engagement (19 to 21).

4. Vibration damper for implementation of the process as claimed in any one of claims 1 to 3, characterised in that the said damper comprises an elastic tubular element (16) including on its internal face protuberances (18) able to co-operate with apertures (11) provided in the cage (7) so as to form means for locking the said tubular element (16) in rotation relative to the said cage (7).

5. Vibration damper as claimed in claim 4, characterised in that the said protuberances (18) are formed by ribs, the length of which is suited to the length of the said apertures (11) so as to form means for axial locking of the said tubular element (16) relative to the said cage (7).

6. Vibration damper as claimed in claim 4 or 5, characterised in that the said tubular element (16) includes on its external face first snap engagement means (19, 20) able to co-operate with second snap engagement means (21) on a pump casing (17) in which the said tubular element (16) is able to be received.

7. Vibration damper as claimed in claim 6, characterised in that the said first snap engagement means include two diametrically opposed snap engagement organs (19, 20) on the external face of the said tubular element (16) and presenting a respective outwardly directed hook (20) able to project through a respective opening (21) provided in the said pump casing (17) to form the said second snap engagement means.

8. Vibration damper as claimed in any one of claims 4 to 7, characterised in that the tubular element (16) is made of rubber.

9. Electric fuel pump, characterised in that it is obtained in accordance with any one of claims 1 to 3.

10. Electric fuel pump, characterised in that it includes the damper as described in any one of claims 4 to 8.